SkFontHost_win.cpp revision 0c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451
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} 112ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 113ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkScalarToFIXED(SkScalar x) { 114ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkScalarToFixed(x)); 115ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 116ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 117ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic unsigned calculateGlyphCount(HDC hdc) { 118ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The 'maxp' table stores the number of glyphs at offset 4, in 2 bytes. 119f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org const DWORD maxpTag = 120f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org SkEndian_SwapBE32(SkSetFourByteTag('m', 'a', 'x', 'p')); 121ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t glyphs; 122ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetFontData(hdc, maxpTag, 4, &glyphs, sizeof(glyphs)) != GDI_ERROR) { 123ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkEndian_SwapBE16(glyphs); 124ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1255aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org 126ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Binary search for glyph count. 127ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {{0, 1}, {0, 0}, {0, 0}, {0, 1}}; 128ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t max = SK_MaxU16 + 1; 129ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t min = 0; 130ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 131ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while (min < max) { 132ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t mid = min + ((max - min) / 2); 133ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetGlyphOutlineW(hdc, mid, GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, 134ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, &mat2) == GDI_ERROR) { 135ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com max = mid; 136ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 137ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min = mid + 1; 138ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 139ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 140ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(min == max); 141ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return min; 142ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 143ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 144ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass LogFontTypeface : public SkTypeface { 145ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 14659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface(SkTypeface::Style style, SkFontID fontID, const LOGFONT& lf) : 14759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface(style, fontID, false), fLogFont(lf) {} 148ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 14959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT fLogFont; 150ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 15159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com static LogFontTypeface* Create(const LOGFONT& lf) { 15290d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com SkTypeface::Style style = get_style(lf); 15359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkFontID fontID = SkTypefaceCache::NewFontID(); 15459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return new LogFontTypeface(style, fontID, lf); 155ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 156ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 157ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 158ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const LOGFONT& get_default_font() { 159ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static LOGFONT gDefaultFont; 160ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return gDefaultFont; 161ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 162ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 16359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic bool FindByLogFont(SkTypeface* face, SkTypeface::Style requestedStyle, void* ctx) { 16459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* lface = reinterpret_cast<LogFontTypeface*>(face); 16559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com const LOGFONT* lf = reinterpret_cast<const LOGFONT*>(ctx); 166ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 16790d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com return get_style(lface->fLogFont) == requestedStyle && 16859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com !memcmp(&lface->fLogFont, lf, sizeof(LOGFONT)); 16959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 17059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 17159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com/** 17259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * This guy is public. It first searches the cache, and if a match is not found, 17359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * it creates a new face. 17459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com */ 17559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comSkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT& origLF) { 17659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf = origLF; 17759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com make_canonical(&lf); 17859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface* face = SkTypefaceCache::FindByProc(FindByLogFont, &lf); 17959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 18059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face->ref(); 181ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 18259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face = LogFontTypeface::Create(lf); 18390d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com SkTypefaceCache::Add(face, get_style(lf)); 18459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 18559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return face; 186ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 187ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 188db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com/** 189db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com * This guy is public 190db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com */ 191db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.comvoid SkLOGFONTFromTypeface(const SkTypeface* face, LOGFONT* lf) { 192db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com if (NULL == face) { 193db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com *lf = get_default_font(); 194db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com } else { 195db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com *lf = ((const LogFontTypeface*)face)->fLogFont; 196db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com } 197db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com} 198db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com 1997d26c590f6bc431a5ecf5c25619b64d058613a4dreed@google.comSkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) { 200ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Zero means that we don't have any fallback fonts for this fontID. 201ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This function is implemented on Android, but doesn't have much 202ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // meaning here. 203ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; 204ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 205ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 20639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.comstatic void ensure_typeface_accessible(SkFontID fontID) { 20739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com LogFontTypeface* face = (LogFontTypeface*)SkTypefaceCache::FindByID(fontID); 20839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com SkFontHost::EnsureTypefaceAccessible(*face); 20939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com} 21039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com 21159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void GetLogFontByID(SkFontID fontID, LOGFONT* lf) { 21259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)SkTypefaceCache::FindByID(fontID); 21359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 21459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com *lf = face->fLogFont; 21559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else { 21659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com sk_bzero(lf, sizeof(LOGFONT)); 21759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 21859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 21959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 2206744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Construct Glyph to Unicode table. 2216744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Unicode code points that require conjugate pairs in utf16 are not 2226744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// supported. 2236744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// TODO(arthurhsu): Add support for conjugate pairs. It looks like that may 2246744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// require parsing the TTF cmap table (platform 4, encoding 12) directly instead 2256744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// of calling GetFontUnicodeRange(). 2266744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.orgstatic void populate_glyph_to_unicode(HDC fontHdc, const unsigned glyphCount, 2276744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkTDArray<SkUnichar>* glyphToUnicode) { 2286744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org DWORD glyphSetBufferSize = GetFontUnicodeRanges(fontHdc, NULL); 2296744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (!glyphSetBufferSize) { 2306744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2316744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2326744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2336744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTDeleteArray<BYTE> glyphSetBuffer(new BYTE[glyphSetBufferSize]); 2346744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GLYPHSET* glyphSet = 2356744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org reinterpret_cast<LPGLYPHSET>(glyphSetBuffer.get()); 2366744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (GetFontUnicodeRanges(fontHdc, glyphSet) != glyphSetBufferSize) { 2376744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2386744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2396744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2406744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org glyphToUnicode->setCount(glyphCount); 2416744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org memset(glyphToUnicode->begin(), 0, glyphCount * sizeof(SkUnichar)); 2426744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (DWORD i = 0; i < glyphSet->cRanges; ++i) { 2436744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // There is no guarantee that within a Unicode range, the corresponding 2446744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // glyph id in a font file are continuous. So, even if we have ranges, 2456744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // we can't just use the first and last entry of the range to compute 2466744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // result. We need to enumerate them one by one. 2476744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org int count = glyphSet->ranges[i].cGlyphs; 2486744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WCHAR> chars(count + 1); 2496744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[count] = 0; // termintate string 2506744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WORD> glyph(count); 2516744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2526744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[j] = glyphSet->ranges[i].wcLow + j; 2536744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2546744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GetGlyphIndicesW(fontHdc, chars.get(), count, glyph.get(), 2556744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GGI_MARK_NONEXISTING_GLYPHS); 2566744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // If the glyph ID is valid, and the glyph is not mapped, then we will 2576744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // fill in the char id into the vector. If the glyph is mapped already, 2586744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // skip it. 2596744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // TODO(arthurhsu): better improve this. e.g. Get all used char ids from 2606744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // font cache, then generate this mapping table from there. It's 2616744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // unlikely to have collisions since glyph reuse happens mostly for 2626744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // different Unicode pages. 2636744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2646744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (glyph[j] != 0xffff && glyph[j] < glyphCount && 2656744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] == 0) { 2666744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] = chars[j]; 2676744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2686744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2696744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2706744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org} 2716744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 27299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com////////////////////////////////////////////////////////////////////////////////////// 27399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 27499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comstatic int alignTo32(int n) { 27599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return (n + 31) & ~31; 27699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com} 27799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 27899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comstruct MyBitmapInfo : public BITMAPINFO { 27999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com RGBQUAD fMoreSpaceForColors[1]; 28099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com}; 28199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 28299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comclass HDCOffscreen { 28399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.compublic: 28499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HDCOffscreen() { 28599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fFont = 0; 28699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fDC = 0; 28799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBM = 0; 28899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBits = NULL; 28999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fWidth = fHeight = 0; 29099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fIsBW = false; 291754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fColor = kInvalid_Color; 29299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 29399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 29499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com ~HDCOffscreen() { 29599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (fDC) { 29699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com DeleteDC(fDC); 29799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 29899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (fBM) { 29999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com DeleteObject(fBM); 30099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 30199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 30299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 30399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com void init(HFONT font, const XFORM& xform) { 30499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fFont = font; 30599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fXform = xform; 30699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 30799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 3086f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com const void* draw(const SkGlyph&, bool isBW, SkGdiRGB fgColor, 309754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com size_t* srcRBPtr); 31099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 31199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.comprivate: 31299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HDC fDC; 31399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HBITMAP fBM; 31499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HFONT fFont; 31599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com XFORM fXform; 31699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com void* fBits; // points into fBM 317754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com COLORREF fColor; 31899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com int fWidth; 31999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com int fHeight; 32099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com bool fIsBW; 321754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 322754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com enum { 323754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com // will always trigger us to reset the color, since we 3246f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com // should only store 0 or 0x00FFFFFF or gray (0x007F7F7F) 325754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com kInvalid_Color = 12345 326754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com }; 32799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com}; 32899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 329754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.comconst void* HDCOffscreen::draw(const SkGlyph& glyph, bool isBW, 3306f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkGdiRGB fgColor, size_t* srcRBPtr) { 33199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fDC) { 33299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fDC = CreateCompatibleDC(0); 33399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fDC) { 33499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return NULL; 33599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 33699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetGraphicsMode(fDC, GM_ADVANCED); 33799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetBkMode(fDC, TRANSPARENT); 33899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetTextAlign(fDC, TA_LEFT | TA_BASELINE); 33999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SelectObject(fDC, fFont); 340754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fColor = kInvalid_Color; 34199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 34299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 34399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (fBM && (fIsBW != isBW || fWidth < glyph.fWidth || fHeight < glyph.fHeight)) { 34499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com DeleteObject(fBM); 34599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBM = 0; 34699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 347754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fIsBW = isBW; 34899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 3496f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com COLORREF color = fgColor; 3506f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com if (fIsBW) { 351754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com color = 0xFFFFFF; 352754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 353754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com if (fColor != color) { 354754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com fColor = color; 355754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com COLORREF prev = SetTextColor(fDC, color); 356754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com SkASSERT(prev != CLR_INVALID); 35799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 358754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 35999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fWidth = SkMax32(fWidth, glyph.fWidth); 36099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fHeight = SkMax32(fHeight, glyph.fHeight); 36199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 36299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com int biWidth = isBW ? alignTo32(fWidth) : fWidth; 36399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 36499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fBM) { 36599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com MyBitmapInfo info; 36699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com sk_bzero(&info, sizeof(info)); 36799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (isBW) { 36899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com RGBQUAD blackQuad = { 0, 0, 0, 0 }; 36999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com RGBQUAD whiteQuad = { 0xFF, 0xFF, 0xFF, 0 }; 37099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiColors[0] = blackQuad; 37199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiColors[1] = whiteQuad; 37299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 37399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biSize = sizeof(info.bmiHeader); 37499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biWidth = biWidth; 37599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biHeight = fHeight; 37699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biPlanes = 1; 37799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biBitCount = isBW ? 1 : 32; 37899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biCompression = BI_RGB; 37999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (isBW) { 38099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com info.bmiHeader.biClrUsed = 2; 38199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 38299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fBM = CreateDIBSection(fDC, &info, DIB_RGB_COLORS, &fBits, 0, 0); 38399edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com if (0 == fBM) { 38499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return NULL; 38599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 38699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SelectObject(fDC, fBM); 38799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com } 38899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 38999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com // erase 39099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com size_t srcRB = isBW ? (biWidth >> 3) : (fWidth << 2); 39199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com size_t size = fHeight * srcRB; 3926f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com unsigned bg = (0 == color) ? 0xFF : 0; 3936f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com memset(fBits, bg, size); 39499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 39599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com XFORM xform = fXform; 39699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com xform.eDx = (float)-glyph.fLeft; 39799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com xform.eDy = (float)-glyph.fTop; 39899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com SetWorldTransform(fDC, &xform); 39999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 40099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com uint16_t glyphID = glyph.getGlyphID(); 40139698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com BOOL ret = ExtTextOutW(fDC, 0, 0, ETO_GLYPH_INDEX, NULL, reinterpret_cast<LPCWSTR>(&glyphID), 1, NULL); 40299edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com GdiFlush(); 40339698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (0 == ret) { 40439698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com return NULL; 40539698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 40699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com *srcRBPtr = srcRB; 40799edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com // offset to the start of the image 40899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com return (const char*)fBits + (fHeight - glyph.fHeight) * srcRB; 40999edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com} 41099edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 41199edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com////////////////////////////////////////////////////////////////////////////////////// 41259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 413ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass SkScalerContext_Windows : public SkScalerContext { 414ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 415ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalerContext_Windows(const SkDescriptor* desc); 416ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual ~SkScalerContext_Windows(); 417ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 418ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprotected: 419ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual unsigned generateGlyphCount(); 420ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual uint16_t generateCharToGlyph(SkUnichar uni); 421ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateAdvance(SkGlyph* glyph); 422ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateMetrics(SkGlyph* glyph); 423ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateImage(const SkGlyph& glyph); 424ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generatePath(const SkGlyph& glyph, SkPath* path); 425ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateFontMetrics(SkPaint::FontMetrics* mX, SkPaint::FontMetrics* mY); 42699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 427ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprivate: 42899edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com HDCOffscreen fOffscreen; 4295aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org SkScalar fScale; // to get from canonical size to real size 430ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com MAT2 fMat22; 431ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com XFORM fXform; 432ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC fDDC; 433ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fSavefont; 434ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fFont; 435ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_CACHE fSC; 436ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int fGlyphCount; 4371dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 4381dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com HFONT fHiResFont; 4391dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com MAT2 fMat22Identity; 4401dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkMatrix fHiResMatrix; 441ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 442ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 443ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic float mul2float(SkScalar a, SkScalar b) { 444ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkScalarToFloat(SkScalarMul(a, b)); 445ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 446ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 447ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic FIXED float2FIXED(float x) { 448ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkFloatToFixed(x)); 449ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 450ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 45159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic SkMutex gFTMutex; 45259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 4531dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com#define HIRES_TEXTSIZE 2048 4541dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com#define HIRES_SHIFT 11 4551dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.comstatic inline SkFixed HiResToFixed(int value) { 4561dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com return value << (16 - HIRES_SHIFT); 4571dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com} 4581dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 4591dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.comstatic bool needHiResMetrics(const SkScalar mat[2][2]) { 4601dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com return mat[1][0] || mat[0][1]; 4611dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com} 4621dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 46382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.comstatic BYTE compute_quality(const SkScalerContext::Rec& rec) { 46482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com switch (rec.fMaskFormat) { 46582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kBW_Format: 46682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return NONANTIALIASED_QUALITY; 46782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kLCD16_Format: 46882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kLCD32_Format: 46982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return CLEARTYPE_QUALITY; 47082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com default: 471b6bb5cb7c2573a9829a0d3aa7b16a55830a7e816reed@google.com return ANTIALIASED_QUALITY; 47282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 47382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 47482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 475ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::SkScalerContext_Windows(const SkDescriptor* desc) 476ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com : SkScalerContext(desc), fDDC(0), fFont(0), fSavefont(0), fSC(0) 477ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com , fGlyphCount(-1) { 478ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 479ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 4805aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org fScale = fRec.fTextSize / gCanonicalTextSize; 481ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 482ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM11 = mul2float(fScale, fRec.fPost2x2[0][0]); 483ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM12 = mul2float(fScale, fRec.fPost2x2[1][0]); 484ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM21 = mul2float(fScale, fRec.fPost2x2[0][1]); 485ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM22 = mul2float(fScale, fRec.fPost2x2[1][1]); 486ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eDx = 0; 487ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eDy = 0; 488ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 489ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM11 = float2FIXED(fXform.eM11); 490ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM12 = float2FIXED(fXform.eM12); 491ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM21 = float2FIXED(-fXform.eM21); 492ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM22 = float2FIXED(-fXform.eM22); 493ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 494ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC = ::CreateCompatibleDC(NULL); 4951dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SetGraphicsMode(fDDC, GM_ADVANCED); 496ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetBkMode(fDDC, TRANSPARENT); 497ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 498ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Scaling by the DPI is inconsistent with how Skia draws elsewhere 499ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //SkScalar height = -(fRec.fTextSize * GetDeviceCaps(ddc, LOGPIXELSY) / 72); 50059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 50159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fRec.fFontID, &lf); 502ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -gCanonicalTextSize; 50382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com lf.lfQuality = compute_quality(fRec); 504ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fFont = CreateFontIndirect(&lf); 5051dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 5061dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com // if we're rotated, or want fractional widths, create a hires font 5071dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResFont = 0; 5081dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (needHiResMetrics(fRec.fPost2x2) || (fRec.fFlags & kSubpixelPositioning_Flag)) { 5091dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com lf.lfHeight = -HIRES_TEXTSIZE; 5101dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResFont = CreateFontIndirect(&lf); 5111dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 5121dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fMat22Identity.eM11 = fMat22Identity.eM22 = SkFixedToFIXED(SK_Fixed1); 5131dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fMat22Identity.eM12 = fMat22Identity.eM21 = SkFixedToFIXED(0); 5141dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 5151dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com // construct a matrix to go from HIRES logical units to our device units 5161dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fRec.getSingleMatrix(&fHiResMatrix); 5171dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkScalar scale = SkScalarInvert(SkIntToScalar(HIRES_TEXTSIZE)); 5181dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResMatrix.preScale(scale, scale); 5191dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 520ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fSavefont = (HFONT)SelectObject(fDDC, fFont); 521a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com 522a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com if (needToRenderWithSkia(fRec)) { 523a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com this->forceGenerateImageFromPath(); 524a767fa06ca28be9df1ff6e08a299e0bec839a2dcreed@google.com } 52599edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com 52699edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com fOffscreen.init(fFont, fXform); 527ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 528ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 529ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::~SkScalerContext_Windows() { 530ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fDDC) { 531ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::SelectObject(fDDC, fSavefont); 532ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteDC(fDDC); 533ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 534ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fFont) { 535ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteObject(fFont); 536ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 5371dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (fHiResFont) { 5381dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com ::DeleteObject(fHiResFont); 5391dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 540ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fSC) { 541ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::ScriptFreeCache(&fSC); 542ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 543ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 544ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 545ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comunsigned SkScalerContext_Windows::generateGlyphCount() { 546ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fGlyphCount < 0) { 547ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fGlyphCount = calculateGlyphCount(fDDC); 548ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 549ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return fGlyphCount; 550ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 551ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 552ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comuint16_t SkScalerContext_Windows::generateCharToGlyph(SkUnichar uni) { 553ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t index = 0; 554ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WCHAR c[2]; 555ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Support characters that generate more than one glyph. 556ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkUTF16_FromUnichar(uni, (uint16_t*)c) == 1) { 557ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Type1 fonts fail with uniscribe API. Use GetGlyphIndices for plane 0. 558ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(GetGlyphIndicesW(fDDC, c, 1, &index, 0)); 559ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 560ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Use uniscribe to detemine glyph index for non-BMP characters. 561ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Need to add extra item to SCRIPT_ITEM to work around a bug in older 562ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // windows versions. https://bugzilla.mozilla.org/show_bug.cgi?id=366643 563ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_ITEM si[2 + 1]; 564ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int items; 565ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult( 566ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SUCCEEDED(ScriptItemize(c, 2, 2, NULL, NULL, si, &items))); 567ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 568ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WORD log[2]; 569ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_VISATTR vsa; 570ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int glyphs; 571ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(SUCCEEDED(ScriptShape( 572ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC, &fSC, c, 2, 1, &si[0].a, &index, log, &vsa, &glyphs))); 573ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 574ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return index; 575ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 576ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 577ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateAdvance(SkGlyph* glyph) { 578ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com this->generateMetrics(glyph); 579ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 580ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 581ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateMetrics(SkGlyph* glyph) { 582ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 583ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 584ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 585ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 5861dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com sk_bzero(&gm, sizeof(gm)); 587ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 588ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fRsbDelta = 0; 589ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLsbDelta = 0; 590ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 591ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Note: need to use GGO_GRAY8_BITMAP instead of GGO_METRICS because GGO_METRICS returns a smaller 592ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // BlackBlox; we need the bigger one in case we need the image. fAdvance is the same. 593ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 59439698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (GDI_ERROR == ret) { 59539698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 59639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 59739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 598ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 599ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != ret) { 600ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (ret == 0) { 601ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // for white space, ret is zero and gmBlackBoxX, gmBlackBoxY are 1 incorrectly! 602ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com gm.gmBlackBoxX = gm.gmBlackBoxY = 0; 603ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 604ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = gm.gmBlackBoxX; 605ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fHeight = gm.gmBlackBoxY; 606ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fTop = SkToS16(gm.gmptGlyphOrigin.y - gm.gmBlackBoxY); 607ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLeft = SkToS16(gm.gmptGlyphOrigin.x); 608ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceX = SkIntToFixed(gm.gmCellIncX); 609ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceY = -SkIntToFixed(gm.gmCellIncY); 610ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 611f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // we outset in all dimensions, since the image may bleed outside 612ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // of the computed bounds returned by GetGlyphOutline. 613ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This was deduced by trial and error for small text (e.g. 8pt), so there 614ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // maybe a more precise way to make this adjustment... 615f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // 616f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // This test shows us clipping the tops of some of the CJK fonts unless we 617f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // increase the top of the box by 2, hence the height by 4. This seems to 618f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // correspond to an embedded bitmap font, but not sure. 619f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // LayoutTests/fast/text/backslash-to-yen-sign-euc.html 620f8cead5e08fe3298ba09da5a15c2d835747c567dreed@google.com // 6215e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (glyph->fWidth) { // don't outset an empty glyph 6225e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fWidth += 4; 6235e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fHeight += 4; 6245e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fTop -= 2; 6255e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com glyph->fLeft -= 2; 6265e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 6271dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 6281dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (fHiResFont) { 6291dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SelectObject(fDDC, fHiResFont); 6301dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com sk_bzero(&gm, sizeof(gm)); 6311dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22Identity); 6321dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (GDI_ERROR != ret) { 6331dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkPoint advance; 6341dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResMatrix.mapXY(SkIntToScalar(gm.gmCellIncX), SkIntToScalar(gm.gmCellIncY), &advance); 6351dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com glyph->fAdvanceX = SkScalarToFixed(advance.fX); 6361dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com glyph->fAdvanceY = SkScalarToFixed(advance.fY); 6371dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 6381dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SelectObject(fDDC, fFont); 6391dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 640ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 641ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = 0; 642ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 643ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 644ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 645ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateFontMetrics(SkPaint::FontMetrics* mx, SkPaint::FontMetrics* my) { 646ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// Note: This code was borrowed from generateLineHeight, which has a note 647ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// stating that it may be incorrect. 648ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(mx || my)) 649ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 650ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 651ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 652ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 653ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 654ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 655ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetOutlineTextMetrics(fDDC, sizeof(otm), &otm); 65639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (GDI_ERROR == ret) { 65739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 65839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ret = GetOutlineTextMetrics(fDDC, sizeof(otm), &otm); 65939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 660ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (sizeof(otm) != ret) { 661ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 662ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 663ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 664ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (mx) { 665ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fTop = -fScale * otm.otmTextMetrics.tmAscent; 6665aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fAscent = -fScale * otm.otmAscent; 6675aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fDescent = -fScale * otm.otmDescent; 6685aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fBottom = fScale * otm.otmTextMetrics.tmDescent; 6695aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org mx->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 6705aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org + otm.otmTextMetrics.tmExternalLeading); 671ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 672ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 673ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (my) { 6745aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fTop = -fScale * otm.otmTextMetrics.tmAscent; 6755aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fAscent = -fScale * otm.otmAscent; 6765aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fDescent = -fScale * otm.otmDescent; 6775aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fBottom = fScale * otm.otmTextMetrics.tmDescent; 6785aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org my->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 6795aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org + otm.otmTextMetrics.tmExternalLeading); 680ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 681ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 682ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 6837430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com//////////////////////////////////////////////////////////////////////////////////////// 6847430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com 6857430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.comstatic void build_power_table(uint8_t table[], float ee) { 6867430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com for (int i = 0; i < 256; i++) { 6877430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com float x = i / 255.f; 6887430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com x = powf(x, ee); 6897430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com int xx = SkScalarRound(SkFloatToScalar(x * 255)); 6907430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com table[i] = SkToU8(xx); 6917430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com } 6927430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com} 6937430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com 6947430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com// This will invert the gamma applied by GDI, so we can sort-of get linear values. 6957430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com// Needed when we draw non-black, non-white text, and don't know how to bias it. 6967430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.comstatic const uint8_t* getInverseGammaTable() { 6977430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com static bool gInited; 6987430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com static uint8_t gTable[256]; 6997430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com if (!gInited) { 7007430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com UINT level = 0; 7017430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com if (!SystemParametersInfo(SPI_GETFONTSMOOTHINGCONTRAST, 0, &level, 0) || !level) { 7027430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com // can't get the data, so use a default 7037430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com level = 1400; 7047430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com } 7057430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com build_power_table(gTable, level / 1000.0f); 7067430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com gInited = true; 7077430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com } 7087430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com return gTable; 7097430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com} 7107430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com 711ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkColorPriv.h" 712ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 7135e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com// gdi's bitmap is upside-down, so we reverse dst walking in Y 7145e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com// whenever we copy it into skia's buffer 7155e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 7165e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic inline uint8_t rgb_to_a8(SkGdiRGB rgb) { 7176f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int r = (rgb >> 16) & 0xFF; 7186f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int g = (rgb >> 8) & 0xFF; 7196f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int b = (rgb >> 0) & 0xFF; 7206f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 7216fc3c1fe428eaaa1581d32988354870cf005d03breed@google.com return (r * 2 + g * 5 + b) >> 3; // luminance 72282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 72382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 7245e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic inline uint16_t rgb_to_lcd16(SkGdiRGB rgb) { 725ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int r = (rgb >> 16) & 0xFF; 726ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int g = (rgb >> 8) & 0xFF; 727ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int b = (rgb >> 0) & 0xFF; 728ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkPackRGB16(SkR32ToR16(r), SkG32ToG16(g), SkB32ToB16(b)); 729ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 730ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 731754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.comstatic inline SkPMColor rgb_to_lcd32(SkGdiRGB rgb) { 732754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int r = (rgb >> 16) & 0xFF; 733754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int g = (rgb >> 8) & 0xFF; 734754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int b = (rgb >> 0) & 0xFF; 735754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com int a = SkMax32(r, SkMax32(g, b)); 736754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com return SkPackARGB32(a, r, g, b); 737754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com} 738754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 73982cff020b7e055f2d01686f060a884df842306edreed@google.com// Is this GDI color neither black nor white? If so, we have to keep this 74082cff020b7e055f2d01686f060a884df842306edreed@google.com// image as is, rather than smashing it down to a BW mask. 74182cff020b7e055f2d01686f060a884df842306edreed@google.com// 74282cff020b7e055f2d01686f060a884df842306edreed@google.com// returns int instead of bool, since we don't want/have to pay to convert 74382cff020b7e055f2d01686f060a884df842306edreed@google.com// the zero/non-zero value into a bool 74482cff020b7e055f2d01686f060a884df842306edreed@google.comstatic int is_not_black_or_white(SkGdiRGB c) { 74582cff020b7e055f2d01686f060a884df842306edreed@google.com // same as (but faster than) 74682cff020b7e055f2d01686f060a884df842306edreed@google.com // c &= 0x00FFFFFF; 74782cff020b7e055f2d01686f060a884df842306edreed@google.com // return 0 == c || 0x00FFFFFF == c; 74882cff020b7e055f2d01686f060a884df842306edreed@google.com return (c + (c & 1)) & 0x00FFFFFF; 7495e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 7505e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 7515e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic bool is_rgb_really_bw(const SkGdiRGB* src, int width, int height, int srcRB) { 7525e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < height; ++y) { 7535e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int x = 0; x < width; ++x) { 75482cff020b7e055f2d01686f060a884df842306edreed@google.com if (is_not_black_or_white(src[x])) { 7555e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com return false; 7565e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7575e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7586f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 7595e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7605e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com return true; 7615e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 7625e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 7635e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic void rgb_to_bw(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 764754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 7655e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const int width = glyph.fWidth; 7665e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const size_t dstRB = (width + 7) >> 3; 7675e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com uint8_t* SK_RESTRICT dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 7685e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 7695e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com int byteCount = width >> 3; 7705e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com int bitCount = width & 7; 7715e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 7725e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com // adjust srcRB to skip the values in our byteCount loop, 7735e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com // since we increment src locally there 7745e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com srcRB -= byteCount * 8 * sizeof(SkGdiRGB); 7755e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 7765e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < glyph.fHeight; ++y) { 7775e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (byteCount > 0) { 7785e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < byteCount; ++i) { 7797a230142e01c5a8cf955be12a5f287589b551634reed@google.com unsigned byte = 0; 780754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[0] ^ xorMask) & (1 << 7); 781754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[1] ^ xorMask) & (1 << 6); 782754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[2] ^ xorMask) & (1 << 5); 783754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[3] ^ xorMask) & (1 << 4); 784754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[4] ^ xorMask) & (1 << 3); 785754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[5] ^ xorMask) & (1 << 2); 786754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[6] ^ xorMask) & (1 << 1); 787754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com byte |= (src[7] ^ xorMask) & (1 << 0); 7886a8f14d9633b330fb8051581828a0aaf4403d1a9reed@google.com dst[i] = byte; 7895e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com src += 8; 7905e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7915e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7925e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (bitCount > 0) { 7935e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com unsigned byte = 0; 7945e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com unsigned mask = 0x80; 7955e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < bitCount; i++) { 7966a8f14d9633b330fb8051581828a0aaf4403d1a9reed@google.com byte |= (src[i] ^ xorMask) & mask; 7975e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com mask >>= 1; 7985e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 7995e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst[byteCount] = byte; 8005e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8016f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 8025e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst -= dstRB; 8035e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8045e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 8055e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8065e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic void rgb_to_a8(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 807754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 8085e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const size_t dstRB = glyph.rowBytes(); 8095e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const int width = glyph.fWidth; 8105e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com uint8_t* SK_RESTRICT dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 8115e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8125e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 8135e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < width; i++) { 814754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst[i] = rgb_to_a8(src[i] ^ xorMask); 8155e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8166f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 8175e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst -= dstRB; 8185e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8195e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 8205e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8215e2df64215f12660ab26b96816f40ad8e32bf16freed@google.comstatic void rgb_to_lcd16(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 822754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 8235e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const size_t dstRB = glyph.rowBytes(); 8245e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const int width = glyph.fWidth; 8255e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com uint16_t* SK_RESTRICT dst = (uint16_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 8265e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 8275e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 8285e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com for (int i = 0; i < width; i++) { 829754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst[i] = rgb_to_lcd16(src[i] ^ xorMask); 8305e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8316f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 8325e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com dst = (uint16_t*)((char*)dst - dstRB); 8335e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } 8345e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com} 8355e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com 836754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.comstatic void rgb_to_lcd32(const SkGdiRGB* SK_RESTRICT src, size_t srcRB, 837754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const SkGlyph& glyph, int32_t xorMask) { 838754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const size_t dstRB = glyph.rowBytes(); 839754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com const int width = glyph.fWidth; 840754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com SkPMColor* SK_RESTRICT dst = (SkPMColor*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 841754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 842754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com for (int y = 0; y < glyph.fHeight; y++) { 843754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com for (int i = 0; i < width; i++) { 844754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst[i] = rgb_to_lcd32(src[i] ^ xorMask); 845754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 8466f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com src = SkTAddByteOffset(src, srcRB); 847754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com dst = (SkPMColor*)((char*)dst - dstRB); 848754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 849754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com} 850754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 8516f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.comstatic inline unsigned clamp255(unsigned x) { 8526f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkASSERT(x <= 256); 8536f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com return x - (x >> 8); 8546f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com} 8556f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 856ffe49f5380dd5062073efeda70f2f91682c828careed@google.com#define WHITE_LUMINANCE_LIMIT 0xA0 857ffe49f5380dd5062073efeda70f2f91682c828careed@google.com#define BLACK_LUMINANCE_LIMIT 0x40 858ffe49f5380dd5062073efeda70f2f91682c828careed@google.com 859ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateImage(const SkGlyph& glyph) { 860ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 861ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 862ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 863ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 8646271117d826098c1399cf7442f8eea2d665cb78areed@google.com const bool isBW = SkMask::kBW_Format == fRec.fMaskFormat; 86582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const bool isAA = !isLCD(fRec); 866ffe49f5380dd5062073efeda70f2f91682c828careed@google.com bool isWhite = fRec.getLuminanceByte() >= WHITE_LUMINANCE_LIMIT; 867ffe49f5380dd5062073efeda70f2f91682c828careed@google.com bool isBlack = fRec.getLuminanceByte() <= BLACK_LUMINANCE_LIMIT; 8686f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 8696f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkGdiRGB fgColor; 8706f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com uint32_t rgbXOR; 8717430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com const uint8_t* table = NULL; 8726f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com if (isBW || isWhite) { 8736f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com fgColor = 0x00FFFFFF; 8746f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgbXOR = 0; 8756f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } else if (isBlack) { 8766f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com fgColor = 0; 8776f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgbXOR = ~0; 8786f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } else { 8797430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com table = getInverseGammaTable(); 8807430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com fgColor = 0x00FFFFFF; 8816f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgbXOR = 0; 8826f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 88382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 88499edd43813b7f1a8f02146cbd8c783d3c82be4abreed@google.com size_t srcRB; 8856f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com const void* bits = fOffscreen.draw(glyph, isBW, fgColor, &srcRB); 88639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (NULL == bits) { 88739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 88839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com bits = fOffscreen.draw(glyph, isBW, fgColor, &srcRB); 88939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (NULL == bits) { 89039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com sk_bzero(glyph.fImage, glyph.computeImageSize()); 89139698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com return; 89239698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 89382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 89482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 8957430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com if (table) { 8966f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com SkGdiRGB* addr = (SkGdiRGB*)bits; 8976f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com for (int y = 0; y < glyph.fHeight; ++y) { 8986f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com for (int x = 0; x < glyph.fWidth; ++x) { 8996f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int r = (addr[x] >> 16) & 0xFF; 9006f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int g = (addr[x] >> 8) & 0xFF; 9016f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com int b = (addr[x] >> 0) & 0xFF; 9027430a3376c0f4e0c2809fedecd12765034f9e3a8reed@google.com addr[x] = (table[r] << 16) | (table[g] << 8) | table[b]; 9036f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 9046f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com addr = SkTAddByteOffset(addr, srcRB); 9056f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 9066f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com } 9076f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com 90882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com int width = glyph.fWidth; 90982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com size_t dstRB = glyph.rowBytes(); 91082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com if (isBW) { 91182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const uint8_t* src = (const uint8_t*)bits; 91282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com uint8_t* dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 91382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 91482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com memcpy(dst, src, dstRB); 91582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com src += srcRB; 91682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst -= dstRB; 917ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 91882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } else if (isAA) { 9196f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com // since the caller may require A8 for maskfilters, we can't check for BW 9206f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com // ... until we have the caller tell us that explicitly 9215e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const SkGdiRGB* src = (const SkGdiRGB*)bits; 9226f5df48c1d07295b75c1955a69142fb5e66b8647reed@google.com rgb_to_a8(src, srcRB, glyph, rgbXOR); 92382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } else { // LCD16 9245e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com const SkGdiRGB* src = (const SkGdiRGB*)bits; 9255e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com if (is_rgb_really_bw(src, width, glyph.fHeight, srcRB)) { 926754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rgb_to_bw(src, srcRB, glyph, rgbXOR); 9275e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com ((SkGlyph*)&glyph)->fMaskFormat = SkMask::kBW_Format; 9285e2df64215f12660ab26b96816f40ad8e32bf16freed@google.com } else { 929754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com if (SkMask::kLCD16_Format == glyph.fMaskFormat) { 930754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rgb_to_lcd16(src, srcRB, glyph, rgbXOR); 931754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } else { 932754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com SkASSERT(SkMask::kLCD32_Format == glyph.fMaskFormat); 933754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rgb_to_lcd32(src, srcRB, glyph, rgbXOR); 934754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 935ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 936ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 937ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 938ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 939ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generatePath(const SkGlyph& glyph, SkPath* path) { 940ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 941ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 942ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 943ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(&glyph && path); 944ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 945ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 946ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->reset(); 947ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 948ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#if 0 949ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char buf[1024]; 950ac6b97972d3c5a8e10b79c1409818756310e0f12reed@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); 951ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OutputDebugString(buf); 952ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 953ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 954ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 955ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_NATIVE | GGO_GLYPH_INDEX, &gm, BUFFERSIZE, glyphbuf, &fMat22); 95639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (GDI_ERROR == total_size) { 95739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fRec.fFontID); 95839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_NATIVE | GGO_GLYPH_INDEX, &gm, BUFFERSIZE, glyphbuf, &fMat22); 95939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 960ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 961ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != total_size) { 962ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 963ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_glyph = glyphbuf; 964ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_glyph = glyphbuf + total_size; 965ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 966ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_glyph < end_glyph) { 967ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYGONHEADER* th = (TTPOLYGONHEADER*)cur_glyph; 968ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 969ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_poly = cur_glyph + th->cb; 970ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_poly = cur_glyph + sizeof(TTPOLYGONHEADER); 971ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 972ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->moveTo(SkFixedToScalar(*(SkFixed*)(&th->pfxStart.x)), SkFixedToScalar(*(SkFixed*)(&th->pfxStart.y))); 973ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 974ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_poly < end_poly) { 975ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYCURVE* pc = (const TTPOLYCURVE*)cur_poly; 976ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 977ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_LINE) { 978ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t i = 0; i < pc->cpfx; i++) { 979ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->lineTo(SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].x)), SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].y))); 980ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 981ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 982ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 983ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_QSPLINE) { 984ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t u = 0; u < pc->cpfx - 1; u++) { // Walk through points in spline 985ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_b = pc->apfx[u]; // B is always the current point 986ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_c = pc->apfx[u+1]; 987ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 988ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (u < pc->cpfx - 2) { // If not on last spline, compute C 989ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.x = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.x), *(SkFixed*)(&pnt_c.x))); 990ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.y = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.y), *(SkFixed*)(&pnt_c.y))); 991ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 992ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 993ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->quadTo(SkFixedToScalar(*(SkFixed*)(&pnt_b.x)), SkFixedToScalar(*(SkFixed*)(&pnt_b.y)), SkFixedToScalar(*(SkFixed*)(&pnt_c.x)), SkFixedToScalar(*(SkFixed*)(&pnt_c.y))); 994ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 995ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 996ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_poly += sizeof(uint16_t) * 2 + sizeof(POINTFX) * pc->cpfx; 997ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 998ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_glyph += th->cb; 999ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->close(); 1000ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1001ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1002ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else { 1003ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 1004ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1005ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //char buf[1024]; 1006ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //sprintf(buf, "generatePath: count:%d\n", count); 1007ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //OutputDebugString(buf); 1008ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1009ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1010ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) { 10110c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451tomhudson@google.com SkDEBUGFAIL("SkFontHost::Serialize unimplemented"); 1012ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1013ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1014ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::Deserialize(SkStream* stream) { 10150c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451tomhudson@google.com SkDEBUGFAIL("SkFontHost::Deserialize unimplemented"); 1016ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 1017ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1018ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1019ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic bool getWidthAdvance(HDC hdc, int gId, int16_t* advance) { 1020ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Initialize the MAT2 structure to the identify transformation matrix. 1021ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {SkScalarToFIXED(1), SkScalarToFIXED(0), 1022ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalarToFIXED(0), SkScalarToFIXED(1)}; 1023ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int flags = GGO_METRICS | GGO_GLYPH_INDEX; 1024ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 1025ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR == GetGlyphOutline(hdc, gId, flags, &gm, 0, NULL, &mat2)) { 1026ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return false; 1027ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1028ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(advance); 1029ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com *advance = gm.gmCellIncX; 1030ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return true; 1031ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1032ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1033ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// static 1034ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics( 1035325cb9aa17b94258b362082eb3a799524f4345f3vandebo@chromium.org uint32_t fontID, 103637ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo, 103737ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org const uint32_t* glyphIDs, 103837ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org uint32_t glyphIDsCount) { 103959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 104059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fontID, &lf); 1041ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAdvancedTypefaceMetrics* info = NULL; 1042ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1043ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = CreateCompatibleDC(NULL); 1044ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT font = CreateFontIndirect(&lf); 1045ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 1046ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT designFont = NULL; 1047ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 104805b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com const char stem_chars[] = {'i', 'I', '!', '1'}; 104905b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com int16_t min_width; 105005b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com unsigned glyphCount; 105105b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com 1052ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // To request design units, create a logical font whose height is specified 1053ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // as unitsPerEm. 1054ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 105539698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com unsigned int otmRet = GetOutlineTextMetrics(hdc, sizeof(otm), &otm); 105639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (0 == otmRet) { 105739698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(fontID); 105839698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com otmRet = GetOutlineTextMetrics(hdc, sizeof(otm), &otm); 105939698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 106039698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (!otmRet || !GetTextFace(hdc, LF_FACESIZE, lf.lfFaceName)) { 1061ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 1062ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1063ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -SkToS32(otm.otmEMSquare); 1064ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com designFont = CreateFontIndirect(&lf); 1065ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, designFont); 1066ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetOutlineTextMetrics(hdc, sizeof(otm), &otm)) { 1067ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 1068ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 106905b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com glyphCount = calculateGlyphCount(hdc); 1070ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1071ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info = new SkAdvancedTypefaceMetrics; 1072ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fEmSize = otm.otmEMSquare; 1073ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fMultiMaster = false; 1074ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fLastGlyphID = SkToU16(glyphCount - 1); 1075ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle = 0; 1076ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 1077ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Get the buffer size needed first. 1078ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t str_len = WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, NULL, 1079ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 0, NULL, NULL); 1080ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Allocate a buffer (str_len already has terminating null accounted for). 1081ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char *familyName = new char[str_len]; 1082ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Now actually convert the string. 1083ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, familyName, str_len, 1084ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, NULL); 1085ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(familyName); 1086ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com delete [] familyName; 1087ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 1088ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(lf.lfFaceName); 1089ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 1090ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 10916744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (perGlyphInfo & SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo) { 10926744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org populate_glyph_to_unicode(hdc, glyphCount, &(info->fGlyphToUnicode)); 10936744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 10946744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 1095ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & TMPF_TRUETYPE) { 1096ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; 1097ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 1098ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kOther_Font; 1099ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = 0; 1100ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = 0; 1101ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = 0; 1102ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 1103ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = 0; 1104ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = SkIRect::MakeEmpty(); 1105ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 1106ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 11075aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org 1108ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If this bit is clear the font is a fixed pitch font. 1109ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(otm.otmTextMetrics.tmPitchAndFamily & TMPF_FIXED_PITCH)) { 1110ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kFixedPitch_Style; 1111ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1112ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmItalic) { 1113ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kItalic_Style; 1114ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1115ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Setting symbolic style by default for now. 1116ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSymbolic_Style; 1117ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & FF_ROMAN) { 1118ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; 1119ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else if (otm.otmTextMetrics.tmPitchAndFamily & FF_SCRIPT) { 1120ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; 1121ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1122ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1123ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The main italic angle of the font, in tenths of a degree counterclockwise 1124ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // from vertical. 1125ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = otm.otmItalicAngle / 10; 1126ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = SkToS16(otm.otmTextMetrics.tmAscent); 1127ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = SkToS16(-otm.otmTextMetrics.tmDescent); 1128ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Use alternate cap height calculation. 1129ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // MSDN says otmsCapEmHeight is not support but it is returning a value on 1130ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // my Win7 box. 1131ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = otm.otmsCapEmHeight; 1132ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = 1133ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkIRect::MakeLTRB(otm.otmrcFontBox.left, otm.otmrcFontBox.top, 1134ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com otm.otmrcFontBox.right, otm.otmrcFontBox.bottom); 1135ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1136ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Figure out a good guess for StemV - Min width of i, I, !, 1. 1137ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This probably isn't very good with an italic font. 113805b6f3a5a94de475d3a9dcfdd1833e24d933f207reed@google.com min_width = SHRT_MAX; 1139ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 1140ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(stem_chars); i++) { 1141ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ABC abcWidths; 1142ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetCharABCWidths(hdc, stem_chars[i], stem_chars[i], &abcWidths)) { 1143ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int16_t width = abcWidths.abcB; 1144ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (width > 0 && width < min_width) { 1145ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min_width = width; 1146ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = min_width; 1147ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1148ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1149ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1150ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1151ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is set, the font may not be embedded in a document. 1152ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is clear, the font can be embedded. 1153ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 2 is set, the embedding is read-only. 1154ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmfsType & 0x1) { 1155ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kNotEmbeddable_Font; 11560e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org } else if (perGlyphInfo & 11570e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo) { 11585aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org if (info->fStyle & SkAdvancedTypefaceMetrics::kFixedPitch_Style) { 11595aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org appendRange(&info->fGlyphWidths, 0); 11605aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org info->fGlyphWidths->fAdvance.append(1, &min_width); 11615aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org finishRange(info->fGlyphWidths.get(), 0, 11625aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org SkAdvancedTypefaceMetrics::WidthRange::kDefault); 11635aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org } else { 11645aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org info->fGlyphWidths.reset( 116537ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org getAdvanceData(hdc, 116637ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org glyphCount, 116737ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org glyphIDs, 116837ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org glyphIDsCount, 116937ad8fb72ff1b3faac93b01ead2c79e1a06fc172vandebo@chromium.org &getWidthAdvance)); 11705aa937b300475c956bfad0c34a6daa71d166f6factguil@chromium.org } 1171ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1172ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1173ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comError: 1174ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 1175ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(designFont); 1176ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 1177ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 1178ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1179ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 1180ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1181ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1182ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { 1183ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1184ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //Should not be used on Windows, keep linker happy 1185ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 1186ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkCreateTypefaceFromLOGFONT(get_default_font()); 1187ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1188ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1189ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkStream* SkFontHost::OpenStream(SkFontID uniqueID) { 1190f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org const DWORD kTTCTag = 1191f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org SkEndian_SwapBE32(SkSetFourByteTag('t', 't', 'c', 'f')); 119259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 119359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(uniqueID, &lf); 1194ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1195ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = ::CreateCompatibleDC(NULL); 119659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com HFONT font = CreateFontIndirect(&lf); 1197ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 1198ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1199d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org SkMemoryStream* stream = NULL; 1200d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org DWORD tables[2] = {kTTCTag, 0}; 1201d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org for (int i = 0; i < SK_ARRAY_COUNT(tables); i++) { 1202d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org size_t bufferSize = GetFontData(hdc, tables[i], 0, NULL, 0); 120339698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com if (bufferSize == GDI_ERROR) { 120439698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com ensure_typeface_accessible(uniqueID); 120539698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com bufferSize = GetFontData(hdc, tables[i], 0, NULL, 0); 120639698b1bd71fd54c7c44ae8d7224afdaf93c0ddabungeman@google.com } 1207d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org if (bufferSize != GDI_ERROR) { 1208d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org stream = new SkMemoryStream(bufferSize); 1209d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org if (GetFontData(hdc, tables[i], 0, (void*)stream->getMemoryBase(), 1210d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org bufferSize)) { 1211d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org break; 1212d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } else { 1213d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org delete stream; 1214d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org stream = NULL; 1215d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } 1216d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } 1217ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 1218ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1219ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 1220ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 1221ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 1222ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1223ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return stream; 1224ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1225ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1226ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext* SkFontHost::CreateScalerContext(const SkDescriptor* desc) { 1227ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkNEW_ARGS(SkScalerContext_Windows, (desc)); 1228ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1229ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1230ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** Return the closest matching typeface given either an existing family 1231ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com (specified by a typeface in that family) or by a familyName, and a 1232ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com requested style. 123390d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com 1) If familyFace is null, use familyName. 123490d812b77ab025d5fd01dab904287f5c5bf56228bungeman@google.com 2) If familyName is null, use familyFace. 1235ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 3) If both are null, return the default font that best matches style 1236ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com This MUST not return NULL. 1237ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 1238ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1239ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace, 1240ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const char familyName[], 1241ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const void* data, size_t bytelength, 1242ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkTypeface::Style style) { 124359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 1244ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (NULL == familyFace && NULL == familyName) { 124559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = get_default_font(); 124659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else if (familyFace) { 124759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)familyFace; 124859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = face->fLogFont; 1249ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 125059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com memset(&lf, 0, sizeof(LOGFONT)); 1251ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 125259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Get the buffer size needed first. 125359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com size_t str_len = ::MultiByteToWideChar(CP_UTF8, 0, familyName, 125459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com -1, NULL, 0); 125559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Allocate a buffer (str_len already has terminating null 125659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // accounted for). 125759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wchar_t *wideFamilyName = new wchar_t[str_len]; 125859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Now actually convert the string. 125959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::MultiByteToWideChar(CP_UTF8, 0, familyName, -1, 126059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wideFamilyName, str_len); 126159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::wcsncpy(lf.lfFaceName, wideFamilyName, LF_FACESIZE); 126259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com delete [] wideFamilyName; 1263ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 126459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::strncpy(lf.lfFaceName, familyName, LF_FACESIZE); 1265ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 126659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf.lfFaceName[LF_FACESIZE-1] = '\0'; 1267ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 126859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com setStyle(&lf, style); 126959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return SkCreateTypefaceFromLOGFONT(lf); 1270ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1271ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1272ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { 1273ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com printf("SkFontHost::CreateTypefaceFromFile unimplemented"); 1274ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 1275ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 1276ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1277ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::FilterRec(SkScalerContext::Rec* rec) { 1278e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com unsigned flagsWeDontSupport = SkScalerContext::kDevKernText_Flag | 1279e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kAutohinting_Flag | 1280e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kEmbeddedBitmapText_Flag | 1281e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kEmbolden_Flag | 1282e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kLCD_BGROrder_Flag | 1283e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kLCD_Vertical_Flag; 1284e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com rec->fFlags &= ~flagsWeDontSupport; 1285e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com 1286e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkPaint::Hinting h = rec->getHinting(); 1287da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 1288da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // I think we can support no-hinting, if we get hires outlines and just 1289da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // use skia to rasterize into a gray-scale mask... 1290da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#if 0 1291e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com switch (h) { 1292e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kNo_Hinting: 1293e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kSlight_Hinting: 1294e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com h = SkPaint::kNo_Hinting; 1295e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com break; 1296e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kNormal_Hinting: 1297e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kFull_Hinting: 1298e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com h = SkPaint::kNormal_Hinting; 1299e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com break; 1300e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com default: 13010c00f21fee3f5cfa3aa7e5d46ff94cb8cf340451tomhudson@google.com SkDEBUGFAIL("unknown hinting"); 1302e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com } 1303da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#else 1304da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com h = SkPaint::kNormal_Hinting; 1305da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#endif 1306e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com rec->setHinting(h); 1307da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 1308ffe49f5380dd5062073efeda70f2f91682c828careed@google.com // for compatibility at the moment, discretize luminance to 3 settings 1309ffe49f5380dd5062073efeda70f2f91682c828careed@google.com // black, white, gray. This helps with fontcache utilization, since we 1310ffe49f5380dd5062073efeda70f2f91682c828careed@google.com // won't create multiple entries that in the end map to the same results. 1311ffe49f5380dd5062073efeda70f2f91682c828careed@google.com { 1312ffe49f5380dd5062073efeda70f2f91682c828careed@google.com unsigned lum = rec->getLuminanceByte(); 1313ffe49f5380dd5062073efeda70f2f91682c828careed@google.com if (lum <= BLACK_LUMINANCE_LIMIT) { 1314ffe49f5380dd5062073efeda70f2f91682c828careed@google.com lum = 0; 1315ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } else if (lum >= WHITE_LUMINANCE_LIMIT) { 1316ffe49f5380dd5062073efeda70f2f91682c828careed@google.com lum = SkScalerContext::kLuminance_Max; 1317ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } else { 1318ffe49f5380dd5062073efeda70f2f91682c828careed@google.com lum = SkScalerContext::kLuminance_Max >> 1; 1319ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } 1320ffe49f5380dd5062073efeda70f2f91682c828careed@google.com rec->setLuminanceBits(lum); 1321ffe49f5380dd5062073efeda70f2f91682c828careed@google.com } 1322ffe49f5380dd5062073efeda70f2f91682c828careed@google.com 13239181aa84aa288d2bc3ab079b6b40a79ac87d8807reed@google.com// turn this off since GDI might turn A8 into BW! Need a bigger fix. 13249181aa84aa288d2bc3ab079b6b40a79ac87d8807reed@google.com#if 0 1325da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // Disable LCD when rotated, since GDI's output is ugly 1326da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com if (isLCD(*rec) && !isAxisAligned(*rec)) { 1327da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com rec->fMaskFormat = SkMask::kA8_Format; 1328da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com } 13299181aa84aa288d2bc3ab079b6b40a79ac87d8807reed@google.com#endif 1330754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 1331754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com#if 0 1332754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com if (SkMask::kLCD16_Format == rec->fMaskFormat) { 1333754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com rec->fMaskFormat = SkMask::kLCD32_Format; 1334754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com } 1335754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com#endif 1336754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com} 1337754e4ebd10d7353ce55be7dfe0a417e502ef4047reed@google.com 1338ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif // WIN32 1339