SkFontHost_win.cpp revision 90b7e386cab251db78152f18adfd54e019b8dc10
1ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 2ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/* 3ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Copyright 2006 The Android Open Source Project 4ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * 5ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * Use of this source code is governed by a BSD-style license that can be 6ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com * found in the LICENSE file. 7ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 8ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 9ec3ed6a5ebf6f2c406d7bcf94b6bc34fcaeb976eepoger@google.com 106f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com#include "SkColorFilter.h" 11ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkString.h" 12ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkEndian.h" 13ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkFontHost.h" 14ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkDescriptor.h" 15ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkAdvancedTypefaceMetrics.h" 16ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkStream.h" 17ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkThread.h" 18ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkTypeface_win.h" 1959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com#include "SkTypefaceCache.h" 20ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkUtils.h" 21ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 22ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef WIN32 23ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "windows.h" 24ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "tchar.h" 2505b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com#include "usp10.h" 26ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 276f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com// always packed xxRRGGBB 286f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.comtypedef uint32_t SkGdiRGB; 296f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 306f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.comtemplate <typename T> T* SkTAddByteOffset(T* ptr, size_t byteOffset) { 316f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com return (T*)((char*)ptr + byteOffset); 326f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com} 336f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 34a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com// define this in your Makefile or .gyp to enforce AA requests 35a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com// which GDI ignores at small sizes. This flag guarantees AA 36a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com// for rotated text, regardless of GDI's notions. 37a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com//#define SK_ENFORCE_ROTATED_TEXT_AA_ON_WINDOWS 38a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com 39ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// client3d has to undefine this for now 40ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#define CAN_USE_LOGFONT_NAME 41ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 4282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.comstatic bool isLCD(const SkScalerContext::Rec& rec) { 4382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return SkMask::kLCD16_Format == rec.fMaskFormat || 4482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SkMask::kLCD32_Format == rec.fMaskFormat; 4582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 4682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 47a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.comstatic bool bothZero(SkScalar a, SkScalar b) { 48a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com return 0 == a && 0 == b; 49a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com} 50a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com 51a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com// returns false if there is any non-90-rotation or skew 52a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.comstatic bool isAxisAligned(const SkScalerContext::Rec& rec) { 53a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com return 0 == rec.fPreSkewX && 54a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com (bothZero(rec.fPost2x2[0][1], rec.fPost2x2[1][0]) || 55a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com bothZero(rec.fPost2x2[0][0], rec.fPost2x2[1][1])); 56a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com} 57a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com 58a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.comstatic bool needToRenderWithSkia(const SkScalerContext::Rec& rec) { 59a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com#ifdef SK_ENFORCE_ROTATED_TEXT_AA_ON_WINDOWS 60a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com // What we really want to catch is when GDI will ignore the AA request and give 61a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com // us BW instead. Smallish rotated text is one heuristic, so this code is just 62a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com // an approximation. We shouldn't need to do this for larger sizes, but at those 63a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com // sizes, the quality difference gets less and less between our general 64a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com // scanconverter and GDI's. 65a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com if (SkMask::kA8_Format == rec.fMaskFormat && !isAxisAligned(rec)) { 66a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com return true; 67a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com } 68a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com#endif 69a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com // false means allow GDI to generate the bits 70a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com return false; 71a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com} 72a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com 73ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comusing namespace skia_advanced_typeface_metrics_utils; 74ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 75ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const uint16_t BUFFERSIZE = (16384 - 32); 76ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic uint8_t glyphbuf[BUFFERSIZE]; 77ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 78ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** 795aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org * Since LOGFONT wants its textsize as an int, and we support fractional sizes, 80ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * and since we have a cache of LOGFONTs for our tyepfaces, we always set the 81ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * lfHeight to a canonical size, and then we use the 2x2 matrix to achieve the 82ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * actual requested size. 83ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 84ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const int gCanonicalTextSize = 64; 85ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 86ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic void make_canonical(LOGFONT* lf) { 875aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org lf->lfHeight = -gCanonicalTextSize; 8859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfQuality = CLEARTYPE_QUALITY;//PROOF_QUALITY; 8959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfCharSet = DEFAULT_CHARSET; 9082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com// lf->lfClipPrecision = 64; 9159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 9259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 9390d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.comstatic SkTypeface::Style get_style(const LOGFONT& lf) { 9459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com unsigned style = 0; 9559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (lf.lfWeight >= FW_BOLD) { 9659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com style |= SkTypeface::kBold; 9759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 9859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (lf.lfItalic) { 9959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com style |= SkTypeface::kItalic; 10059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 10190d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com return static_cast<SkTypeface::Style>(style); 10259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 10359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 10459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void setStyle(LOGFONT* lf, SkTypeface::Style style) { 10559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfWeight = (style & SkTypeface::kBold) != 0 ? FW_BOLD : FW_NORMAL ; 10659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfItalic = ((style & SkTypeface::kItalic) != 0); 107ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 108ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 109ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkFixedToFIXED(SkFixed x) { 110ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return *(FIXED*)(&x); 111ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 112a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.comstatic inline SkFixed SkFIXEDToFixed(FIXED x) { 113a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com return *(SkFixed*)(&x); 114a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com} 115ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 116ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkScalarToFIXED(SkScalar x) { 117ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkScalarToFixed(x)); 118ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 119ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 120a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.comstatic unsigned calculateOutlineGlyphCount(HDC hdc) { 121ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The 'maxp' table stores the number of glyphs at offset 4, in 2 bytes. 122f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org const DWORD maxpTag = 123f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org SkEndian_SwapBE32(SkSetFourByteTag('m', 'a', 'x', 'p')); 124ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t glyphs; 125ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetFontData(hdc, maxpTag, 4, &glyphs, sizeof(glyphs)) != GDI_ERROR) { 126ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkEndian_SwapBE16(glyphs); 127ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1285aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org 129ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Binary search for glyph count. 130ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {{0, 1}, {0, 0}, {0, 0}, {0, 1}}; 131ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t max = SK_MaxU16 + 1; 132ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t min = 0; 133ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 134ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while (min < max) { 135ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t mid = min + ((max - min) / 2); 136ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetGlyphOutlineW(hdc, mid, GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, 137ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, &mat2) == GDI_ERROR) { 138ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com max = mid; 139ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 140ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min = mid + 1; 141ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 142ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 143ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(min == max); 144ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return min; 145ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 146ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 147ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass LogFontTypeface : public SkTypeface { 148ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 14959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface(SkTypeface::Style style, SkFontID fontID, const LOGFONT& lf) : 15059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface(style, fontID, false), fLogFont(lf) {} 151ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 15259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT fLogFont; 153ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 15459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com static LogFontTypeface* Create(const LOGFONT& lf) { 15590d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com SkTypeface::Style style = get_style(lf); 15659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkFontID fontID = SkTypefaceCache::NewFontID(); 15759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return new LogFontTypeface(style, fontID, lf); 158ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 159ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 160ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 161ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const LOGFONT& get_default_font() { 162ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static LOGFONT gDefaultFont; 163ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return gDefaultFont; 164ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 165ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 16659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic bool FindByLogFont(SkTypeface* face, SkTypeface::Style requestedStyle, void* ctx) { 16759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* lface = reinterpret_cast<LogFontTypeface*>(face); 16859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com const LOGFONT* lf = reinterpret_cast<const LOGFONT*>(ctx); 169ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 17090d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com return get_style(lface->fLogFont) == requestedStyle && 17159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com !memcmp(&lface->fLogFont, lf, sizeof(LOGFONT)); 17259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 17359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 17459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com/** 17559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * This guy is public. It first searches the cache, and if a match is not found, 17659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * it creates a new face. 17759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com */ 17859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comSkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT& origLF) { 17959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf = origLF; 18059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com make_canonical(&lf); 181ee51d1a6e43615ae640410013c36d2d9873e6aa5bungeman@google.com SkTypeface* face = SkTypefaceCache::FindByProcAndRef(FindByLogFont, &lf); 182ee51d1a6e43615ae640410013c36d2d9873e6aa5bungeman@google.com if (NULL == face) { 18359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face = LogFontTypeface::Create(lf); 18490d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com SkTypefaceCache::Add(face, get_style(lf)); 18559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 18659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return face; 187ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 188ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 189db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com/** 190db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com * This guy is public 191db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com */ 192db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.comvoid SkLOGFONTFromTypeface(const SkTypeface* face, LOGFONT* lf) { 193db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com if (NULL == face) { 194db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com *lf = get_default_font(); 195db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com } else { 196db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com *lf = ((const LogFontTypeface*)face)->fLogFont; 197db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com } 198db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com} 199db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com 2007d26c590f6bc431a5ecf5c25619b64d058613a4dreed@google.comSkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) { 201ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Zero means that we don't have any fallback fonts for this fontID. 202ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This function is implemented on Android, but doesn't have much 203ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // meaning here. 204ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; 205ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 206ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 20739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.comstatic void ensure_typeface_accessible(SkFontID fontID) { 20839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com LogFontTypeface* face = (LogFontTypeface*)SkTypefaceCache::FindByID(fontID); 209ee51d1a6e43615ae640410013c36d2d9873e6aa5bungeman@google.com if (face) { 210ee51d1a6e43615ae640410013c36d2d9873e6aa5bungeman@google.com SkFontHost::EnsureTypefaceAccessible(*face); 211ee51d1a6e43615ae640410013c36d2d9873e6aa5bungeman@google.com } 21239698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com} 21339698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com 21459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void GetLogFontByID(SkFontID fontID, LOGFONT* lf) { 21559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)SkTypefaceCache::FindByID(fontID); 21659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 21759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com *lf = face->fLogFont; 21859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else { 21959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com sk_bzero(lf, sizeof(LOGFONT)); 22059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 22159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 22259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 2236744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Construct Glyph to Unicode table. 2246744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Unicode code points that require conjugate pairs in utf16 are not 2256744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// supported. 2266744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// TODO(arthurhsu): Add support for conjugate pairs. It looks like that may 2276744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// require parsing the TTF cmap table (platform 4, encoding 12) directly instead 2286744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// of calling GetFontUnicodeRange(). 2296744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.orgstatic void populate_glyph_to_unicode(HDC fontHdc, const unsigned glyphCount, 2306744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkTDArray<SkUnichar>* glyphToUnicode) { 2316744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org DWORD glyphSetBufferSize = GetFontUnicodeRanges(fontHdc, NULL); 2326744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (!glyphSetBufferSize) { 2336744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2346744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2356744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2366744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTDeleteArray<BYTE> glyphSetBuffer(new BYTE[glyphSetBufferSize]); 2376744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GLYPHSET* glyphSet = 2386744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org reinterpret_cast<LPGLYPHSET>(glyphSetBuffer.get()); 2396744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (GetFontUnicodeRanges(fontHdc, glyphSet) != glyphSetBufferSize) { 2406744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2416744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2426744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2436744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org glyphToUnicode->setCount(glyphCount); 2446744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org memset(glyphToUnicode->begin(), 0, glyphCount * sizeof(SkUnichar)); 2456744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (DWORD i = 0; i < glyphSet->cRanges; ++i) { 2466744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // There is no guarantee that within a Unicode range, the corresponding 2476744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // glyph id in a font file are continuous. So, even if we have ranges, 2486744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // we can't just use the first and last entry of the range to compute 2496744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // result. We need to enumerate them one by one. 2506744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org int count = glyphSet->ranges[i].cGlyphs; 2516744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WCHAR> chars(count + 1); 2526744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[count] = 0; // termintate string 2536744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WORD> glyph(count); 2546744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2556744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[j] = glyphSet->ranges[i].wcLow + j; 2566744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2576744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GetGlyphIndicesW(fontHdc, chars.get(), count, glyph.get(), 2586744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GGI_MARK_NONEXISTING_GLYPHS); 2596744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // If the glyph ID is valid, and the glyph is not mapped, then we will 2606744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // fill in the char id into the vector. If the glyph is mapped already, 2616744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // skip it. 2626744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // TODO(arthurhsu): better improve this. e.g. Get all used char ids from 2636744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // font cache, then generate this mapping table from there. It's 2646744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // unlikely to have collisions since glyph reuse happens mostly for 2656744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // different Unicode pages. 2666744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2676744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (glyph[j] != 0xffff && glyph[j] < glyphCount && 2686744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] == 0) { 2696744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] = chars[j]; 2706744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2716744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2726744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2736744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org} 2746744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 27599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com////////////////////////////////////////////////////////////////////////////////////// 27699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 27799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comstatic int alignTo32(int n) { 27899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return (n + 31) & ~31; 27999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com} 28099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 28199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comstruct MyBitmapInfo : public BITMAPINFO { 28299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com RGBQUAD fMoreSpaceForColors[1]; 28399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com}; 28499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 28599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comclass HDCOffscreen { 28699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.compublic: 28799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HDCOffscreen() { 28899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fFont = 0; 28999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fDC = 0; 29099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBM = 0; 29199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBits = NULL; 29299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fWidth = fHeight = 0; 29399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fIsBW = false; 294754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fColor = kInvalid_Color; 29599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 29699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 29799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com ~HDCOffscreen() { 29899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (fDC) { 29999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com DeleteDC(fDC); 30099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 30199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (fBM) { 30299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com DeleteObject(fBM); 30399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 30499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 30599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 30699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com void init(HFONT font, const XFORM& xform) { 30799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fFont = font; 30899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fXform = xform; 30999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 31099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 3116f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com const void* draw(const SkGlyph&, bool isBW, SkGdiRGB fgColor, 312754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com size_t* srcRBPtr); 31399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 31499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comprivate: 31599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HDC fDC; 31699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HBITMAP fBM; 31799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HFONT fFont; 31899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com XFORM fXform; 31999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com void* fBits; // points into fBM 320754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com COLORREF fColor; 32199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com int fWidth; 32299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com int fHeight; 32399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com bool fIsBW; 324754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 325754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com enum { 326754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com // will always trigger us to reset the color, since we 3276f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com // should only store 0 or 0x00FFFFFF or gray (0x007F7F7F) 328754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com kInvalid_Color = 12345 329754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com }; 33099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com}; 33199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 332754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.comconst void* HDCOffscreen::draw(const SkGlyph& glyph, bool isBW, 3336f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkGdiRGB fgColor, size_t* srcRBPtr) { 33499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fDC) { 33599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fDC = CreateCompatibleDC(0); 33699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fDC) { 33799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return NULL; 33899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 33999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetGraphicsMode(fDC, GM_ADVANCED); 34099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetBkMode(fDC, TRANSPARENT); 34199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetTextAlign(fDC, TA_LEFT | TA_BASELINE); 34299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SelectObject(fDC, fFont); 343754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fColor = kInvalid_Color; 34499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 34599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 34699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (fBM && (fIsBW != isBW || fWidth < glyph.fWidth || fHeight < glyph.fHeight)) { 34799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com DeleteObject(fBM); 34899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBM = 0; 34999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 350754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fIsBW = isBW; 35199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 3526f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com COLORREF color = fgColor; 3536f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com if (fIsBW) { 354754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com color = 0xFFFFFF; 355754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 356754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com if (fColor != color) { 357754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fColor = color; 358754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com COLORREF prev = SetTextColor(fDC, color); 359754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com SkASSERT(prev != CLR_INVALID); 36099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 361754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 36299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fWidth = SkMax32(fWidth, glyph.fWidth); 36399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fHeight = SkMax32(fHeight, glyph.fHeight); 36499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 36599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com int biWidth = isBW ? alignTo32(fWidth) : fWidth; 36699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 36799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fBM) { 36899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com MyBitmapInfo info; 36999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com sk_bzero(&info, sizeof(info)); 37099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (isBW) { 37199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com RGBQUAD blackQuad = { 0, 0, 0, 0 }; 37299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com RGBQUAD whiteQuad = { 0xFF, 0xFF, 0xFF, 0 }; 37399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiColors[0] = blackQuad; 37499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiColors[1] = whiteQuad; 37599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 37699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biSize = sizeof(info.bmiHeader); 37799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biWidth = biWidth; 37899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biHeight = fHeight; 37999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biPlanes = 1; 38099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biBitCount = isBW ? 1 : 32; 38199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biCompression = BI_RGB; 38299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (isBW) { 38399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biClrUsed = 2; 38499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 38599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBM = CreateDIBSection(fDC, &info, DIB_RGB_COLORS, &fBits, 0, 0); 38699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fBM) { 38799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return NULL; 38899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 38999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SelectObject(fDC, fBM); 39099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 39199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 39299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com // erase 39399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com size_t srcRB = isBW ? (biWidth >> 3) : (fWidth << 2); 39499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com size_t size = fHeight * srcRB; 3956f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com unsigned bg = (0 == color) ? 0xFF : 0; 3966f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com memset(fBits, bg, size); 39799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 39899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com XFORM xform = fXform; 39999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com xform.eDx = (float)-glyph.fLeft; 40099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com xform.eDy = (float)-glyph.fTop; 40199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetWorldTransform(fDC, &xform); 40299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 40399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com uint16_t glyphID = glyph.getGlyphID(); 40439698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com BOOL ret = ExtTextOutW(fDC, 0, 0, ETO_GLYPH_INDEX, NULL, reinterpret_cast<LPCWSTR>(&glyphID), 1, NULL); 40599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com GdiFlush(); 40639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (0 == ret) { 40739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com return NULL; 40839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 40999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com *srcRBPtr = srcRB; 41099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com // offset to the start of the image 41199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return (const char*)fBits + (fHeight - glyph.fHeight) * srcRB; 41299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com} 41399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 41499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com////////////////////////////////////////////////////////////////////////////////////// 41559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 416ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass SkScalerContext_Windows : public SkScalerContext { 417ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 418ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalerContext_Windows(const SkDescriptor* desc); 419ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual ~SkScalerContext_Windows(); 420ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 421ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprotected: 422ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual unsigned generateGlyphCount(); 423ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual uint16_t generateCharToGlyph(SkUnichar uni); 424ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateAdvance(SkGlyph* glyph); 425ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateMetrics(SkGlyph* glyph); 426ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateImage(const SkGlyph& glyph); 427ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generatePath(const SkGlyph& glyph, SkPath* path); 428ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateFontMetrics(SkPaint::FontMetrics* mX, SkPaint::FontMetrics* mY); 42999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 430ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprivate: 43199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HDCOffscreen fOffscreen; 4325aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org SkScalar fScale; // to get from canonical size to real size 433ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com MAT2 fMat22; 434ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com XFORM fXform; 435ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC fDDC; 436ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fSavefont; 437ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fFont; 438ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_CACHE fSC; 439ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int fGlyphCount; 4401dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 4411dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com HFONT fHiResFont; 4421dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com MAT2 fMat22Identity; 4431dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkMatrix fHiResMatrix; 444a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com enum Type { 445a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com kTrueType_Type, kBitmap_Type, 446a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } fType; 447a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com TEXTMETRIC fTM; 448ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 449ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 450ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic float mul2float(SkScalar a, SkScalar b) { 451ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkScalarToFloat(SkScalarMul(a, b)); 452ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 453ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 454ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic FIXED float2FIXED(float x) { 455ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkFloatToFixed(x)); 456ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 457ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 4581771cbf43d9a1334e3d870c635b4215bb888dd98digit@google.comSK_DECLARE_STATIC_MUTEX(gFTMutex); 45959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 4601dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com#define HIRES_TEXTSIZE 2048 4611dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com#define HIRES_SHIFT 11 4621dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.comstatic inline SkFixed HiResToFixed(int value) { 4631dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com return value << (16 - HIRES_SHIFT); 4641dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com} 4651dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 4661dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.comstatic bool needHiResMetrics(const SkScalar mat[2][2]) { 4671dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com return mat[1][0] || mat[0][1]; 4681dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com} 4691dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 47082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.comstatic BYTE compute_quality(const SkScalerContext::Rec& rec) { 47182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com switch (rec.fMaskFormat) { 47282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kBW_Format: 47382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return NONANTIALIASED_QUALITY; 47482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kLCD16_Format: 47582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kLCD32_Format: 47682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return CLEARTYPE_QUALITY; 47782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com default: 4788351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com if (rec.fFlags & SkScalerContext::kGenA8FromLCD_Flag) { 4798351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com return CLEARTYPE_QUALITY; 4808351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com } else { 4818351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com return ANTIALIASED_QUALITY; 4828351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com } 48382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 48482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 48582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 486ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::SkScalerContext_Windows(const SkDescriptor* desc) 487ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com : SkScalerContext(desc), fDDC(0), fFont(0), fSavefont(0), fSC(0) 488ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com , fGlyphCount(-1) { 489ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 490ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 491ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC = ::CreateCompatibleDC(NULL); 4921dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SetGraphicsMode(fDDC, GM_ADVANCED); 493ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetBkMode(fDDC, TRANSPARENT); 494ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 495ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Scaling by the DPI is inconsistent with how Skia draws elsewhere 496ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //SkScalar height = -(fRec.fTextSize * GetDeviceCaps(ddc, LOGPIXELSY) / 72); 49759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 49859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fRec.fFontID, &lf); 499ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -gCanonicalTextSize; 50082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com lf.lfQuality = compute_quality(fRec); 501ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fFont = CreateFontIndirect(&lf); 5021dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 5031dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com // if we're rotated, or want fractional widths, create a hires font 5041dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResFont = 0; 505c84547a8d3cb04f0547db282b34e26abfbe64ec3bungeman@google.com if (needHiResMetrics(fRec.fPost2x2)) { 5061dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com lf.lfHeight = -HIRES_TEXTSIZE; 5071dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResFont = CreateFontIndirect(&lf); 5081dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 5091dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fMat22Identity.eM11 = fMat22Identity.eM22 = SkFixedToFIXED(SK_Fixed1); 5101dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fMat22Identity.eM12 = fMat22Identity.eM21 = SkFixedToFIXED(0); 5111dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 5121dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com // construct a matrix to go from HIRES logical units to our device units 5131dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fRec.getSingleMatrix(&fHiResMatrix); 5141dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkScalar scale = SkScalarInvert(SkIntToScalar(HIRES_TEXTSIZE)); 5151dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResMatrix.preScale(scale, scale); 5161dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 517ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fSavefont = (HFONT)SelectObject(fDDC, fFont); 518a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com 519a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (0 == GetTextMetrics(fDDC, &fTM)) { 520a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com ensure_typeface_accessible(fRec.fFontID); 521a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (0 == GetTextMetrics(fDDC, &fTM)) { 522a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fTM.tmPitchAndFamily = TMPF_TRUETYPE; 523a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 524a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 525a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com // Used a logfont on a memory context, should never get a device font. 52690b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com // Therefore all TMPF_DEVICE will be PostScript fonts. 52790b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com 52890b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com // If TMPF_VECTOR is set, one of TMPF_TRUETYPE or TMPF_DEVICE must be set, 52990b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com // otherwise we have a vector FON, which we don't support. 53090b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com // This was determined by testing with Type1 PFM/PFB and OpenTypeCFF OTF, 53190b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com // as well as looking at Wine bugs and sources. 53290b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com SkASSERT(!(fTM.tmPitchAndFamily & TMPF_VECTOR) || 53390b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com (fTM.tmPitchAndFamily & (TMPF_TRUETYPE | TMPF_DEVICE))); 53490b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com 53590b7e386cab251db78152f18adfd54e019b8dc10bungeman@google.com if (fTM.tmPitchAndFamily & TMPF_VECTOR) { 536a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com // Truetype or PostScript. 537a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com // Stroked FON also gets here (TMPF_VECTOR), but we don't handle it. 538a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fType = SkScalerContext_Windows::kTrueType_Type; 539a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fScale = fRec.fTextSize / gCanonicalTextSize; 540a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 541a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM11 = mul2float(fScale, fRec.fPost2x2[0][0]); 542a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM12 = mul2float(fScale, fRec.fPost2x2[1][0]); 543a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM21 = mul2float(fScale, fRec.fPost2x2[0][1]); 544a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM22 = mul2float(fScale, fRec.fPost2x2[1][1]); 545a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eDx = 0; 546a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eDy = 0; 547a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 548a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM11 = float2FIXED(fXform.eM11); 549a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM12 = float2FIXED(fXform.eM12); 550a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM21 = float2FIXED(-fXform.eM21); 551a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM22 = float2FIXED(-fXform.eM22); 552a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 553a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (needToRenderWithSkia(fRec)) { 554a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com this->forceGenerateImageFromPath(); 555a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 556a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 557a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } else { 558a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com // Assume bitmap 559a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fType = SkScalerContext_Windows::kBitmap_Type; 560a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fScale = SK_Scalar1; 561a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 562a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM11 = 1.0f; 563a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM12 = 0.0f; 564a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM21 = 0.0f; 565a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eM22 = 1.0f; 566a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eDx = 0.0f; 567a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fXform.eDy = 0.0f; 568a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 569a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM11 = SkScalarToFIXED(fRec.fPost2x2[0][0]); 570a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM12 = SkScalarToFIXED(fRec.fPost2x2[1][0]); 571a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM21 = SkScalarToFIXED(-fRec.fPost2x2[0][1]); 572a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fMat22.eM22 = SkScalarToFIXED(-fRec.fPost2x2[1][1]); 573a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 574a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com lf.lfHeight = -SkScalarCeilToInt(fRec.fTextSize); 575a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com HFONT bitmapFont = CreateFontIndirect(&lf); 576a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com SelectObject(fDDC, bitmapFont); 577a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com ::DeleteObject(fFont); 578a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fFont = bitmapFont; 579a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 580a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (0 == GetTextMetrics(fDDC, &fTM)) { 581a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com ensure_typeface_accessible(fRec.fFontID); 582a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com //if the following fails, we'll just draw at gCanonicalTextSize. 583a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com GetTextMetrics(fDDC, &fTM); 584a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 585a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com } 58699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 58799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fOffscreen.init(fFont, fXform); 588ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 589ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 590ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::~SkScalerContext_Windows() { 591ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fDDC) { 592ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::SelectObject(fDDC, fSavefont); 593ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteDC(fDDC); 594ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 595ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fFont) { 596ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteObject(fFont); 597ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 5981dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (fHiResFont) { 5991dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com ::DeleteObject(fHiResFont); 6001dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 601ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fSC) { 602ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::ScriptFreeCache(&fSC); 603ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 604ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 605ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 606ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comunsigned SkScalerContext_Windows::generateGlyphCount() { 607ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fGlyphCount < 0) { 608a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (fType == SkScalerContext_Windows::kBitmap_Type) { 609a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com return fTM.tmLastChar; 610a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 611a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com fGlyphCount = calculateOutlineGlyphCount(fDDC); 612ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 613ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return fGlyphCount; 614ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 615ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 616ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comuint16_t SkScalerContext_Windows::generateCharToGlyph(SkUnichar uni) { 617ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t index = 0; 618ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WCHAR c[2]; 619ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Support characters that generate more than one glyph. 620ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkUTF16_FromUnichar(uni, (uint16_t*)c) == 1) { 621ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Type1 fonts fail with uniscribe API. Use GetGlyphIndices for plane 0. 622ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(GetGlyphIndicesW(fDDC, c, 1, &index, 0)); 623ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 624ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Use uniscribe to detemine glyph index for non-BMP characters. 625ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Need to add extra item to SCRIPT_ITEM to work around a bug in older 626ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // windows versions. https://bugzilla.mozilla.org/show_bug.cgi?id=366643 627ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_ITEM si[2 + 1]; 628ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int items; 629ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult( 630ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SUCCEEDED(ScriptItemize(c, 2, 2, NULL, NULL, si, &items))); 631ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 632ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WORD log[2]; 633ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_VISATTR vsa; 634ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int glyphs; 635ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(SUCCEEDED(ScriptShape( 636ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC, &fSC, c, 2, 1, &si[0].a, &index, log, &vsa, &glyphs))); 637ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 638ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return index; 639ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 640ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 641ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateAdvance(SkGlyph* glyph) { 642ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com this->generateMetrics(glyph); 643ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 644ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 645ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateMetrics(SkGlyph* glyph) { 646ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 647ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 648ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 649a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (fType == SkScalerContext_Windows::kBitmap_Type) { 650a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com SIZE size; 651a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com WORD glyphs = glyph->getGlyphID(0); 652a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (0 == GetTextExtentPointI(fDDC, &glyphs, 1, &size)) { 653a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fWidth = SkToS16(fTM.tmMaxCharWidth); 654a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } else { 655a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fWidth = SkToS16(size.cx); 656a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 657a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fHeight = SkToS16(size.cy); 658a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 659a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fTop = SkToS16(-fTM.tmAscent); 660a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fLeft = SkToS16(0); 661a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fAdvanceX = SkIntToFixed(glyph->fWidth); 662a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fAdvanceY = 0; 663a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 664a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com //Apply matrix to values. 665a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fAdvanceY = SkFixedMul(SkFIXEDToFixed(fMat22.eM21), glyph->fAdvanceX); 666a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->fAdvanceX = SkFixedMul(SkFIXEDToFixed(fMat22.eM11), glyph->fAdvanceX); 667a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 668a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com return; 669a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 670a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 671ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 6721dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com sk_bzero(&gm, sizeof(gm)); 673ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 674ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fRsbDelta = 0; 675ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLsbDelta = 0; 676ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 677ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Note: need to use GGO_GRAY8_BITMAP instead of GGO_METRICS because GGO_METRICS returns a smaller 678ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // BlackBlox; we need the bigger one in case we need the image. fAdvance is the same. 679ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 68039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (GDI_ERROR == ret) { 68139698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 68239698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 68339698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 684ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 685ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != ret) { 686ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (ret == 0) { 687ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // for white space, ret is zero and gmBlackBoxX, gmBlackBoxY are 1 incorrectly! 688ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com gm.gmBlackBoxX = gm.gmBlackBoxY = 0; 689ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 690ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = gm.gmBlackBoxX; 691ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fHeight = gm.gmBlackBoxY; 692ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fTop = SkToS16(gm.gmptGlyphOrigin.y - gm.gmBlackBoxY); 693ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLeft = SkToS16(gm.gmptGlyphOrigin.x); 694ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceX = SkIntToFixed(gm.gmCellIncX); 695ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceY = -SkIntToFixed(gm.gmCellIncY); 696ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 697f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // we outset in all dimensions, since the image may bleed outside 698ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // of the computed bounds returned by GetGlyphOutline. 699ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This was deduced by trial and error for small text (e.g. 8pt), so there 700ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // maybe a more precise way to make this adjustment... 701f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // 702f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // This test shows us clipping the tops of some of the CJK fonts unless we 703f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // increase the top of the box by 2, hence the height by 4. This seems to 704f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // correspond to an embedded bitmap font, but not sure. 705f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // LayoutTests/fast/text/backslash-to-yen-sign-euc.html 706f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // 7075e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (glyph->fWidth) { // don't outset an empty glyph 7085e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fWidth += 4; 7095e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fHeight += 4; 7105e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fTop -= 2; 7115e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fLeft -= 2; 7125e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7131dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 7141dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (fHiResFont) { 7151dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SelectObject(fDDC, fHiResFont); 7161dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com sk_bzero(&gm, sizeof(gm)); 7171dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22Identity); 7181dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (GDI_ERROR != ret) { 7191dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkPoint advance; 7201dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResMatrix.mapXY(SkIntToScalar(gm.gmCellIncX), SkIntToScalar(gm.gmCellIncY), &advance); 7211dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com glyph->fAdvanceX = SkScalarToFixed(advance.fX); 7221dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com glyph->fAdvanceY = SkScalarToFixed(advance.fY); 7231dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 7241dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SelectObject(fDDC, fFont); 7251dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 726ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 727a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyph->zeroMetrics(); 728ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 729ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 730ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 731ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateFontMetrics(SkPaint::FontMetrics* mx, SkPaint::FontMetrics* my) { 732ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// Note: This code was borrowed from generateLineHeight, which has a note 733ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// stating that it may be incorrect. 734ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(mx || my)) 735ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 736ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 737ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 738ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 739a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (fType == SkScalerContext_Windows::kBitmap_Type) { 740a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (mx) { 741a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com mx->fTop = SkIntToScalar(-fTM.tmAscent); 742a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com mx->fAscent = SkIntToScalar(-fTM.tmAscent); 743a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com mx->fDescent = -SkIntToScalar(fTM.tmDescent); 744a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com mx->fBottom = SkIntToScalar(fTM.tmDescent); 745a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com mx->fLeading = SkIntToScalar(fTM.tmInternalLeading 746a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com + fTM.tmExternalLeading); 747a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 748a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 749a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com if (my) { 750a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com my->fTop = SkIntToScalar(-fTM.tmAscent); 751a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com my->fAscent = SkIntToScalar(-fTM.tmAscent); 752a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com my->fDescent = SkIntToScalar(-fTM.tmDescent); 753a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com my->fBottom = SkIntToScalar(fTM.tmDescent); 754a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com my->fLeading = SkIntToScalar(fTM.tmInternalLeading 755a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com + fTM.tmExternalLeading); 756a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 757a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com return; 758a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com } 759a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com 760ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 761ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 762ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetOutlineTextMetrics(fDDC, sizeof(otm), &otm); 76339698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (GDI_ERROR == ret) { 76439698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 76539698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ret = GetOutlineTextMetrics(fDDC, sizeof(otm), &otm); 76639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 767ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (sizeof(otm) != ret) { 768a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com return; 769ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 770ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 771ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (mx) { 772ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fTop = -fScale * otm.otmTextMetrics.tmAscent; 7735aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fAscent = -fScale * otm.otmAscent; 7745aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fDescent = -fScale * otm.otmDescent; 7755aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fBottom = fScale * otm.otmTextMetrics.tmDescent; 7765aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 7775aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org + otm.otmTextMetrics.tmExternalLeading); 778ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 779ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 780ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (my) { 7815aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fTop = -fScale * otm.otmTextMetrics.tmAscent; 7825aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fAscent = -fScale * otm.otmAscent; 7835aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fDescent = -fScale * otm.otmDescent; 7845aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fBottom = fScale * otm.otmTextMetrics.tmDescent; 7855aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 7865aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org + otm.otmTextMetrics.tmExternalLeading); 787ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 788ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 789ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 7907430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com//////////////////////////////////////////////////////////////////////////////////////// 7917430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com 7927430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.comstatic void build_power_table(uint8_t table[], float ee) { 7937430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com for (int i = 0; i < 256; i++) { 7947430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com float x = i / 255.f; 7957430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com x = powf(x, ee); 7967430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com int xx = SkScalarRound(SkFloatToScalar(x * 255)); 7977430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com table[i] = SkToU8(xx); 7987430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com } 7997430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com} 8007430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com 8017430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com// This will invert the gamma applied by GDI, so we can sort-of get linear values. 8027430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com// Needed when we draw non-black, non-white text, and don't know how to bias it. 8037430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.comstatic const uint8_t* getInverseGammaTable() { 8047430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com static bool gInited; 8057430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com static uint8_t gTable[256]; 8067430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com if (!gInited) { 8077430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com UINT level = 0; 8087430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com if (!SystemParametersInfo(SPI_GETFONTSMOOTHINGCONTRAST, 0, &level, 0) || !level) { 8097430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com // can't get the data, so use a default 8107430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com level = 1400; 8117430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com } 8127430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com build_power_table(gTable, level / 1000.0f); 8137430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com gInited = true; 8147430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com } 8157430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com return gTable; 8167430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com} 8177430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com 818ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkColorPriv.h" 819ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 8205e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com// gdi's bitmap is upside-down, so we reverse dst walking in Y 8215e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com// whenever we copy it into skia's buffer 8225e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8238351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.comstatic int compute_luminance(int r, int g, int b) { 8248351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com// return (r * 2 + g * 5 + b) >> 3; 8258351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com return (r * 27 + g * 92 + b * 9) >> 7; 8268351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com} 8278351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com 8285e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic inline uint8_t rgb_to_a8(SkGdiRGB rgb) { 8296f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int r = (rgb >> 16) & 0xFF; 8306f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int g = (rgb >> 8) & 0xFF; 8316f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int b = (rgb >> 0) & 0xFF; 8328351aabbfe82a76a698fa2bde00d33c1174518cdreed@google.com return compute_luminance(r, g, b); 83382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 83482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 8355e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic inline uint16_t rgb_to_lcd16(SkGdiRGB rgb) { 836ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int r = (rgb >> 16) & 0xFF; 837ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int g = (rgb >> 8) & 0xFF; 838ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int b = (rgb >> 0) & 0xFF; 839ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkPackRGB16(SkR32ToR16(r), SkG32ToG16(g), SkB32ToB16(b)); 840ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 841ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 842754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.comstatic inline SkPMColor rgb_to_lcd32(SkGdiRGB rgb) { 843754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int r = (rgb >> 16) & 0xFF; 844754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int g = (rgb >> 8) & 0xFF; 845754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int b = (rgb >> 0) & 0xFF; 846754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int a = SkMax32(r, SkMax32(g, b)); 847754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com return SkPackARGB32(a, r, g, b); 848754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com} 849754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 85082cff020b7e055f2d01686f060a884df842306edreed@google.com// Is this GDI color neither black nor white? If so, we have to keep this 85182cff020b7e055f2d01686f060a884df842306edreed@google.com// image as is, rather than smashing it down to a BW mask. 85282cff020b7e055f2d01686f060a884df842306edreed@google.com// 85382cff020b7e055f2d01686f060a884df842306edreed@google.com// returns int instead of bool, since we don't want/have to pay to convert 85482cff020b7e055f2d01686f060a884df842306edreed@google.com// the zero/non-zero value into a bool 85582cff020b7e055f2d01686f060a884df842306edreed@google.comstatic int is_not_black_or_white(SkGdiRGB c) { 85682cff020b7e055f2d01686f060a884df842306edreed@google.com // same as (but faster than) 85782cff020b7e055f2d01686f060a884df842306edreed@google.com // c &= 0x00FFFFFF; 85882cff020b7e055f2d01686f060a884df842306edreed@google.com // return 0 == c || 0x00FFFFFF == c; 85982cff020b7e055f2d01686f060a884df842306edreed@google.com return (c + (c & 1)) & 0x00FFFFFF; 8605e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 8615e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8625e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic bool is_rgb_really_bw(const SkGdiRGB* src, int width, int height, int srcRB) { 8635e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < height; ++y) { 8645e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int x = 0; x < width; ++x) { 86582cff020b7e055f2d01686f060a884df842306edreed@google.com if (is_not_black_or_white(src[x])) { 8665e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com return false; 8675e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8685e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8696f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 8705e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8715e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com return true; 8725e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 8735e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8745e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic void rgb_to_bw(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 875754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 8765e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const int width = glyph.fWidth; 8775e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const size_t dstRB = (width + 7) >> 3; 8785e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com uint8_t* SK_RESTRICT dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 8795e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8805e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com int byteCount = width >> 3; 8815e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com int bitCount = width & 7; 8825e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8835e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com // adjust srcRB to skip the values in our byteCount loop, 8845e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com // since we increment src locally there 8855e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com srcRB -= byteCount * 8 * sizeof(SkGdiRGB); 8865e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8875e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < glyph.fHeight; ++y) { 8885e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (byteCount > 0) { 8895e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < byteCount; ++i) { 8907a230142e01c5a8cf955be12a5f287589b551634reed@google.com unsigned byte = 0; 891754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[0] ^ xorMask) & (1 << 7); 892754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[1] ^ xorMask) & (1 << 6); 893754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[2] ^ xorMask) & (1 << 5); 894754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[3] ^ xorMask) & (1 << 4); 895754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[4] ^ xorMask) & (1 << 3); 896754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[5] ^ xorMask) & (1 << 2); 897754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[6] ^ xorMask) & (1 << 1); 898754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[7] ^ xorMask) & (1 << 0); 8996a8f14d9633b330fb8051581828a0aaf4403d1a9reed@google.com dst[i] = byte; 9005e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com src += 8; 9015e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9025e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9035e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (bitCount > 0) { 9045e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com unsigned byte = 0; 9055e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com unsigned mask = 0x80; 9065e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < bitCount; i++) { 9076a8f14d9633b330fb8051581828a0aaf4403d1a9reed@google.com byte |= (src[i] ^ xorMask) & mask; 9085e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com mask >>= 1; 9095e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9105e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst[byteCount] = byte; 9115e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9126f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 9135e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst -= dstRB; 9145e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9155e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 9165e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 9175e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic void rgb_to_a8(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 918754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 9195e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const size_t dstRB = glyph.rowBytes(); 9205e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const int width = glyph.fWidth; 9215e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com uint8_t* SK_RESTRICT dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 9225e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 9235e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 9245e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < width; i++) { 925754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst[i] = rgb_to_a8(src[i] ^ xorMask); 9265e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9276f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 9285e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst -= dstRB; 9295e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9305e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 9315e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 9325e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic void rgb_to_lcd16(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 933754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 9345e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const size_t dstRB = glyph.rowBytes(); 9355e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const int width = glyph.fWidth; 9365e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com uint16_t* SK_RESTRICT dst = (uint16_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 9375e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 9385e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 9395e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < width; i++) { 940754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst[i] = rgb_to_lcd16(src[i] ^ xorMask); 9415e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9426f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 9435e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst = (uint16_t*)((char*)dst - dstRB); 9445e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 9455e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 9465e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 947754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.comstatic void rgb_to_lcd32(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 948754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 949754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const size_t dstRB = glyph.rowBytes(); 950754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const int width = glyph.fWidth; 951754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com SkPMColor* SK_RESTRICT dst = (SkPMColor*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 952754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 953754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com for (int y = 0; y < glyph.fHeight; y++) { 954754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com for (int i = 0; i < width; i++) { 955754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst[i] = rgb_to_lcd32(src[i] ^ xorMask); 956754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 9576f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 958754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst = (SkPMColor*)((char*)dst - dstRB); 959754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 960754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com} 961754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 9626f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.comstatic inline unsigned clamp255(unsigned x) { 9636f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkASSERT(x <= 256); 9646f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com return x - (x >> 8); 9656f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com} 9666f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 967ffe49f5380dd5062073efeda70f2f91682c828careed@google.com#define WHITE_LUMINANCE_LIMIT 0xA0 968ffe49f5380dd5062073efeda70f2f91682c828careed@google.com#define BLACK_LUMINANCE_LIMIT 0x40 969ffe49f5380dd5062073efeda70f2f91682c828careed@google.com 970ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateImage(const SkGlyph& glyph) { 971ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 972ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 973ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 974ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 9756271117d826098c1399cf7442f8eea2d665cb78areed@google.com const bool isBW = SkMask::kBW_Format == fRec.fMaskFormat; 97682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const bool isAA = !isLCD(fRec); 977ffe49f5380dd5062073efeda70f2f91682c828careed@google.com bool isWhite = fRec.getLuminanceByte() >= WHITE_LUMINANCE_LIMIT; 978ffe49f5380dd5062073efeda70f2f91682c828careed@google.com bool isBlack = fRec.getLuminanceByte() <= BLACK_LUMINANCE_LIMIT; 9796f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 9806f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkGdiRGB fgColor; 9816f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com uint32_t rgbXOR; 9827430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com const uint8_t* table = NULL; 9836f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com if (isBW || isWhite) { 9846f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com fgColor = 0x00FFFFFF; 9856f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgbXOR = 0; 9866f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } else if (isBlack) { 9876f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com fgColor = 0; 9886f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgbXOR = ~0; 9896f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } else { 9907430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com table = getInverseGammaTable(); 9917430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com fgColor = 0x00FFFFFF; 9926f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgbXOR = 0; 9936f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 99482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 99599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com size_t srcRB; 9966f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com const void* bits = fOffscreen.draw(glyph, isBW, fgColor, &srcRB); 99739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (NULL == bits) { 99839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 99939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com bits = fOffscreen.draw(glyph, isBW, fgColor, &srcRB); 100039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (NULL == bits) { 100139698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com sk_bzero(glyph.fImage, glyph.computeImageSize()); 100239698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com return; 100339698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 100482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 100582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 10067430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com if (table) { 10076f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkGdiRGB* addr = (SkGdiRGB*)bits; 10086f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com for (int y = 0; y < glyph.fHeight; ++y) { 10096f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com for (int x = 0; x < glyph.fWidth; ++x) { 10106f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int r = (addr[x] >> 16) & 0xFF; 10116f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int g = (addr[x] >> 8) & 0xFF; 10126f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int b = (addr[x] >> 0) & 0xFF; 10137430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com addr[x] = (table[r] << 16) | (table[g] << 8) | table[b]; 10146f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 10156f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com addr = SkTAddByteOffset(addr, srcRB); 10166f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 10176f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 10186f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 101982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com int width = glyph.fWidth; 102082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com size_t dstRB = glyph.rowBytes(); 102182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com if (isBW) { 102282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const uint8_t* src = (const uint8_t*)bits; 102382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com uint8_t* dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 102482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 102582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com memcpy(dst, src, dstRB); 102682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com src += srcRB; 102782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst -= dstRB; 1028ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 102982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } else if (isAA) { 10306f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com // since the caller may require A8 for maskfilters, we can't check for BW 10316f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com // ... until we have the caller tell us that explicitly 10325e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const SkGdiRGB* src = (const SkGdiRGB*)bits; 10336f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgb_to_a8(src, srcRB, glyph, rgbXOR); 103482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } else { // LCD16 10355e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const SkGdiRGB* src = (const SkGdiRGB*)bits; 10365e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (is_rgb_really_bw(src, width, glyph.fHeight, srcRB)) { 1037754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rgb_to_bw(src, srcRB, glyph, rgbXOR); 10385e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com ((SkGlyph*)&glyph)->fMaskFormat = SkMask::kBW_Format; 10395e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } else { 1040754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com if (SkMask::kLCD16_Format == glyph.fMaskFormat) { 1041754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rgb_to_lcd16(src, srcRB, glyph, rgbXOR); 1042754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } else { 1043754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com SkASSERT(SkMask::kLCD32_Format == glyph.fMaskFormat); 1044754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rgb_to_lcd32(src, srcRB, glyph, rgbXOR); 1045754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 1046ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1047ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1048ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1049ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1050ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generatePath(const SkGlyph& glyph, SkPath* path) { 1051ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1052ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 1053ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1054ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(&glyph && path); 1055ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 1056ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1057ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->reset(); 1058ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1059ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#if 0 1060ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char buf[1024]; 1061ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com sprintf(buf, "generatePath: id:%d, w=%d, h=%d, font:%s,fh:%d\n", glyph.fID, glyph.fWidth, glyph.fHeight, lf.lfFaceName, lf.lfHeight); 1062ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OutputDebugString(buf); 1063ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 1064ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1065ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 1066ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_NATIVE | GGO_GLYPH_INDEX, &gm, BUFFERSIZE, glyphbuf, &fMat22); 106739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (GDI_ERROR == total_size) { 106839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 106939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_NATIVE | GGO_GLYPH_INDEX, &gm, BUFFERSIZE, glyphbuf, &fMat22); 107039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 1071ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1072ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != total_size) { 1073ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1074ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_glyph = glyphbuf; 1075ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_glyph = glyphbuf + total_size; 1076ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1077ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_glyph < end_glyph) { 1078ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYGONHEADER* th = (TTPOLYGONHEADER*)cur_glyph; 1079ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1080ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_poly = cur_glyph + th->cb; 1081ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_poly = cur_glyph + sizeof(TTPOLYGONHEADER); 1082ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1083ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->moveTo(SkFixedToScalar(*(SkFixed*)(&th->pfxStart.x)), SkFixedToScalar(*(SkFixed*)(&th->pfxStart.y))); 1084ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1085ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_poly < end_poly) { 1086ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYCURVE* pc = (const TTPOLYCURVE*)cur_poly; 1087ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1088ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_LINE) { 1089ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t i = 0; i < pc->cpfx; i++) { 1090ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->lineTo(SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].x)), SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].y))); 1091ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1092ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1093ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1094ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_QSPLINE) { 1095ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t u = 0; u < pc->cpfx - 1; u++) { // Walk through points in spline 1096ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_b = pc->apfx[u]; // B is always the current point 1097ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_c = pc->apfx[u+1]; 1098ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1099ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (u < pc->cpfx - 2) { // If not on last spline, compute C 1100ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.x = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.x), *(SkFixed*)(&pnt_c.x))); 1101ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.y = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.y), *(SkFixed*)(&pnt_c.y))); 1102ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1103ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1104ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->quadTo(SkFixedToScalar(*(SkFixed*)(&pnt_b.x)), SkFixedToScalar(*(SkFixed*)(&pnt_b.y)), SkFixedToScalar(*(SkFixed*)(&pnt_c.x)), SkFixedToScalar(*(SkFixed*)(&pnt_c.y))); 1105ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1106ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1107ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_poly += sizeof(uint16_t) * 2 + sizeof(POINTFX) * pc->cpfx; 1108ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1109ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_glyph += th->cb; 1110ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->close(); 1111ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1112ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1113ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else { 1114ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 1115ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1116ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //char buf[1024]; 1117ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //sprintf(buf, "generatePath: count:%d\n", count); 1118ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //OutputDebugString(buf); 1119ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1120ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1121ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) { 11220c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451tomhudson@google.com SkDEBUGFAIL("SkFontHost::Serialize unimplemented"); 1123ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1124ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1125ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::Deserialize(SkStream* stream) { 11260c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451tomhudson@google.com SkDEBUGFAIL("SkFontHost::Deserialize unimplemented"); 1127ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 1128ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1129ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1130ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic bool getWidthAdvance(HDC hdc, int gId, int16_t* advance) { 1131ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Initialize the MAT2 structure to the identify transformation matrix. 1132ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {SkScalarToFIXED(1), SkScalarToFIXED(0), 1133ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalarToFIXED(0), SkScalarToFIXED(1)}; 1134ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int flags = GGO_METRICS | GGO_GLYPH_INDEX; 1135ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 1136ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR == GetGlyphOutline(hdc, gId, flags, &gm, 0, NULL, &mat2)) { 1137ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return false; 1138ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1139ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(advance); 1140ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com *advance = gm.gmCellIncX; 1141ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return true; 1142ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1143ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1144ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// static 1145ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics( 1146325cb9aa17b94258b362082eb3a799524f4345f3vandebo@chromium.org uint32_t fontID, 114737ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo, 114837ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org const uint32_t* glyphIDs, 114937ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org uint32_t glyphIDsCount) { 115059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 115159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fontID, &lf); 1152ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAdvancedTypefaceMetrics* info = NULL; 1153ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1154ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = CreateCompatibleDC(NULL); 1155ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT font = CreateFontIndirect(&lf); 1156ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 1157ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT designFont = NULL; 1158ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 115905b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com const char stem_chars[] = {'i', 'I', '!', '1'}; 116005b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com int16_t min_width; 116105b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com unsigned glyphCount; 116205b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com 1163ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // To request design units, create a logical font whose height is specified 1164ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // as unitsPerEm. 1165ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 116639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com unsigned int otmRet = GetOutlineTextMetrics(hdc, sizeof(otm), &otm); 116739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (0 == otmRet) { 116839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fontID); 116939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com otmRet = GetOutlineTextMetrics(hdc, sizeof(otm), &otm); 117039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 117139698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (!otmRet || !GetTextFace(hdc, LF_FACESIZE, lf.lfFaceName)) { 1172ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 1173ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1174ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -SkToS32(otm.otmEMSquare); 1175ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com designFont = CreateFontIndirect(&lf); 1176ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, designFont); 1177ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetOutlineTextMetrics(hdc, sizeof(otm), &otm)) { 1178ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 1179ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1180a0319f6d071bb8298e56ace043ea6c623fb358f7bungeman@google.com glyphCount = calculateOutlineGlyphCount(hdc); 1181ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1182ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info = new SkAdvancedTypefaceMetrics; 1183ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fEmSize = otm.otmEMSquare; 1184ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fMultiMaster = false; 1185ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fLastGlyphID = SkToU16(glyphCount - 1); 1186ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle = 0; 1187ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 1188ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Get the buffer size needed first. 1189ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t str_len = WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, NULL, 1190ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 0, NULL, NULL); 1191ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Allocate a buffer (str_len already has terminating null accounted for). 1192ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char *familyName = new char[str_len]; 1193ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Now actually convert the string. 1194ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, familyName, str_len, 1195ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, NULL); 1196ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(familyName); 1197ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com delete [] familyName; 1198ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 1199ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(lf.lfFaceName); 1200ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 1201ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 12026744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (perGlyphInfo & SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo) { 12036744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org populate_glyph_to_unicode(hdc, glyphCount, &(info->fGlyphToUnicode)); 12046744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 12056744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 1206d41e70de196e78e21e1001d23a7259785cbd0835vandebo@chromium.org if (glyphCount > 0 && 1207d41e70de196e78e21e1001d23a7259785cbd0835vandebo@chromium.org (otm.otmTextMetrics.tmPitchAndFamily & TMPF_TRUETYPE)) { 1208ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; 1209ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 1210ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kOther_Font; 1211ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = 0; 1212ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = 0; 1213ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = 0; 1214ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 1215ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = 0; 1216ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = SkIRect::MakeEmpty(); 1217ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 1218ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 12195aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org 1220ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If this bit is clear the font is a fixed pitch font. 1221ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(otm.otmTextMetrics.tmPitchAndFamily & TMPF_FIXED_PITCH)) { 1222ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kFixedPitch_Style; 1223ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1224ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmItalic) { 1225ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kItalic_Style; 1226ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1227ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Setting symbolic style by default for now. 1228ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSymbolic_Style; 1229ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & FF_ROMAN) { 1230ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; 1231ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else if (otm.otmTextMetrics.tmPitchAndFamily & FF_SCRIPT) { 1232ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; 1233ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1234ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1235ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The main italic angle of the font, in tenths of a degree counterclockwise 1236ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // from vertical. 1237ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = otm.otmItalicAngle / 10; 1238ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = SkToS16(otm.otmTextMetrics.tmAscent); 1239ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = SkToS16(-otm.otmTextMetrics.tmDescent); 1240ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Use alternate cap height calculation. 1241ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // MSDN says otmsCapEmHeight is not support but it is returning a value on 1242ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // my Win7 box. 1243ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = otm.otmsCapEmHeight; 1244ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = 1245ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkIRect::MakeLTRB(otm.otmrcFontBox.left, otm.otmrcFontBox.top, 1246ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com otm.otmrcFontBox.right, otm.otmrcFontBox.bottom); 1247ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1248ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Figure out a good guess for StemV - Min width of i, I, !, 1. 1249ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This probably isn't very good with an italic font. 125005b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com min_width = SHRT_MAX; 1251ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 1252ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(stem_chars); i++) { 1253ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ABC abcWidths; 1254ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetCharABCWidths(hdc, stem_chars[i], stem_chars[i], &abcWidths)) { 1255ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int16_t width = abcWidths.abcB; 1256ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (width > 0 && width < min_width) { 1257ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min_width = width; 1258ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = min_width; 1259ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1260ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1261ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1262ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1263ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is set, the font may not be embedded in a document. 1264ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is clear, the font can be embedded. 1265ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 2 is set, the embedding is read-only. 1266ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmfsType & 0x1) { 1267ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kNotEmbeddable_Font; 12680e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org } else if (perGlyphInfo & 12690e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo) { 12705aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org if (info->fStyle & SkAdvancedTypefaceMetrics::kFixedPitch_Style) { 12715aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org appendRange(&info->fGlyphWidths, 0); 12725aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org info->fGlyphWidths->fAdvance.append(1, &min_width); 12735aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org finishRange(info->fGlyphWidths.get(), 0, 12745aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org SkAdvancedTypefaceMetrics::WidthRange::kDefault); 12755aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org } else { 12765aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org info->fGlyphWidths.reset( 127737ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org getAdvanceData(hdc, 127837ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org glyphCount, 127937ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org glyphIDs, 128037ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org glyphIDsCount, 128137ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org &getWidthAdvance)); 12825aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org } 1283ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1284ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1285ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comError: 1286ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 1287ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(designFont); 1288ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 1289ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 1290ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1291ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 1292ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1293ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1294ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { 1295ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1296ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //Should not be used on Windows, keep linker happy 1297ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 1298ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkCreateTypefaceFromLOGFONT(get_default_font()); 1299ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1300ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1301ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkStream* SkFontHost::OpenStream(SkFontID uniqueID) { 1302f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org const DWORD kTTCTag = 1303f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org SkEndian_SwapBE32(SkSetFourByteTag('t', 't', 'c', 'f')); 130459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 130559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(uniqueID, &lf); 1306ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1307ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = ::CreateCompatibleDC(NULL); 130859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com HFONT font = CreateFontIndirect(&lf); 1309ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 1310ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1311d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org SkMemoryStream* stream = NULL; 1312d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org DWORD tables[2] = {kTTCTag, 0}; 1313d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org for (int i = 0; i < SK_ARRAY_COUNT(tables); i++) { 1314d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org size_t bufferSize = GetFontData(hdc, tables[i], 0, NULL, 0); 131539698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (bufferSize == GDI_ERROR) { 131639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(uniqueID); 131739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com bufferSize = GetFontData(hdc, tables[i], 0, NULL, 0); 131839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 1319d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org if (bufferSize != GDI_ERROR) { 1320d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org stream = new SkMemoryStream(bufferSize); 1321d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org if (GetFontData(hdc, tables[i], 0, (void*)stream->getMemoryBase(), 1322d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org bufferSize)) { 1323d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org break; 1324d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } else { 1325d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org delete stream; 1326d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org stream = NULL; 1327d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } 1328d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } 1329ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1330ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1331ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 1332ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 1333ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 1334ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1335ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return stream; 1336ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1337ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1338ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext* SkFontHost::CreateScalerContext(const SkDescriptor* desc) { 1339ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkNEW_ARGS(SkScalerContext_Windows, (desc)); 1340ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1341ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1342ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** Return the closest matching typeface given either an existing family 1343ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com (specified by a typeface in that family) or by a familyName, and a 1344ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com requested style. 134590d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com 1) If familyFace is null, use familyName. 134690d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com 2) If familyName is null, use familyFace. 1347ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 3) If both are null, return the default font that best matches style 1348ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com This MUST not return NULL. 1349ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 1350ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1351ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace, 1352ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const char familyName[], 1353ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const void* data, size_t bytelength, 1354ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkTypeface::Style style) { 135559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 1356ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (NULL == familyFace && NULL == familyName) { 135759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = get_default_font(); 135859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else if (familyFace) { 135959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)familyFace; 136059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = face->fLogFont; 1361ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 136259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com memset(&lf, 0, sizeof(LOGFONT)); 1363ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 136459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Get the buffer size needed first. 136559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com size_t str_len = ::MultiByteToWideChar(CP_UTF8, 0, familyName, 136659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com -1, NULL, 0); 136759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Allocate a buffer (str_len already has terminating null 136859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // accounted for). 136959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wchar_t *wideFamilyName = new wchar_t[str_len]; 137059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Now actually convert the string. 137159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::MultiByteToWideChar(CP_UTF8, 0, familyName, -1, 137259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wideFamilyName, str_len); 137359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::wcsncpy(lf.lfFaceName, wideFamilyName, LF_FACESIZE); 137459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com delete [] wideFamilyName; 1375ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 137659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::strncpy(lf.lfFaceName, familyName, LF_FACESIZE); 1377ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 137859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf.lfFaceName[LF_FACESIZE-1] = '\0'; 1379ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 138059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com setStyle(&lf, style); 138159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return SkCreateTypefaceFromLOGFONT(lf); 1382ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1383ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1384ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { 1385ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com printf("SkFontHost::CreateTypefaceFromFile unimplemented"); 1386ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 1387ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1388ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1389ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::FilterRec(SkScalerContext::Rec* rec) { 1390e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com unsigned flagsWeDontSupport = SkScalerContext::kDevKernText_Flag | 1391e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kAutohinting_Flag | 1392e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kEmbeddedBitmapText_Flag | 1393e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kEmbolden_Flag | 1394c84547a8d3cb04f0547db282b34e26abfbe64ec3bungeman@google.com SkScalerContext::kSubpixelPositioning_Flag | 1395e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kLCD_BGROrder_Flag | 1396e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kLCD_Vertical_Flag; 1397e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com rec->fFlags &= ~flagsWeDontSupport; 1398e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com 1399e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkPaint::Hinting h = rec->getHinting(); 1400da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 1401da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // I think we can support no-hinting, if we get hires outlines and just 1402da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // use skia to rasterize into a gray-scale mask... 1403da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#if 0 1404e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com switch (h) { 1405e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kNo_Hinting: 1406e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kSlight_Hinting: 1407e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com h = SkPaint::kNo_Hinting; 1408e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com break; 1409e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kNormal_Hinting: 1410e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kFull_Hinting: 1411e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com h = SkPaint::kNormal_Hinting; 1412e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com break; 1413e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com default: 14140c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451tomhudson@google.com SkDEBUGFAIL("unknown hinting"); 1415e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com } 1416da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#else 1417da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com h = SkPaint::kNormal_Hinting; 1418da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#endif 1419e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com rec->setHinting(h); 1420da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 1421ffe49f5380dd5062073efeda70f2f91682c828careed@google.com // for compatibility at the moment, discretize luminance to 3 settings 1422ffe49f5380dd5062073efeda70f2f91682c828careed@google.com // black, white, gray. This helps with fontcache utilization, since we 1423ffe49f5380dd5062073efeda70f2f91682c828careed@google.com // won't create multiple entries that in the end map to the same results. 1424ffe49f5380dd5062073efeda70f2f91682c828careed@google.com { 1425ffe49f5380dd5062073efeda70f2f91682c828careed@google.com unsigned lum = rec->getLuminanceByte(); 1426ffe49f5380dd5062073efeda70f2f91682c828careed@google.com if (lum <= BLACK_LUMINANCE_LIMIT) { 1427ffe49f5380dd5062073efeda70f2f91682c828careed@google.com lum = 0; 1428ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } else if (lum >= WHITE_LUMINANCE_LIMIT) { 1429ffe49f5380dd5062073efeda70f2f91682c828careed@google.com lum = SkScalerContext::kLuminance_Max; 1430ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } else { 1431ffe49f5380dd5062073efeda70f2f91682c828careed@google.com lum = SkScalerContext::kLuminance_Max >> 1; 1432ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } 1433ffe49f5380dd5062073efeda70f2f91682c828careed@google.com rec->setLuminanceBits(lum); 1434ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } 1435ffe49f5380dd5062073efeda70f2f91682c828careed@google.com 14369181aa84aa288d2bc3ab079b6b40a79ac87d8807reed@google.com// turn this off since GDI might turn A8 into BW! Need a bigger fix. 14379181aa84aa288d2bc3ab079b6b40a79ac87d8807reed@google.com#if 0 1438da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // Disable LCD when rotated, since GDI's output is ugly 1439da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com if (isLCD(*rec) && !isAxisAligned(*rec)) { 1440da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com rec->fMaskFormat = SkMask::kA8_Format; 1441da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com } 14429181aa84aa288d2bc3ab079b6b40a79ac87d8807reed@google.com#endif 1443754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 1444754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com#if 0 1445754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com if (SkMask::kLCD16_Format == rec->fMaskFormat) { 1446754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rec->fMaskFormat = SkMask::kLCD32_Format; 1447754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 1448754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com#endif 1449754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com} 1450754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 1451ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif // WIN32 1452