SkFontHost_win.cpp revision 82a34d83f646d069ef2d1d7b649d0a0b1829d62f
1ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/* 2ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** Copyright 2006, The Android Open Source Project 3ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** 4ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** Licensed under the Apache License, Version 2.0 (the "License"); 5ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** you may not use this file except in compliance with the License. 6ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** You may obtain a copy of the License at 7ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** 8ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** http://www.apache.org/licenses/LICENSE-2.0 9ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** 10ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** Unless required by applicable law or agreed to in writing, software 11ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** distributed under the License is distributed on an "AS IS" BASIS, 12ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** See the License for the specific language governing permissions and 14ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ** limitations under the License. 15ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 16ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 17ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkString.h" 18ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkEndian.h" 19ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkFontHost.h" 20ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkDescriptor.h" 21ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkAdvancedTypefaceMetrics.h" 22ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkStream.h" 23ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkThread.h" 24ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkTypeface_win.h" 2559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com#include "SkTypefaceCache.h" 26ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkUtils.h" 27ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 28ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef WIN32 29ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "windows.h" 30ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "tchar.h" 31ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "Usp10.h" 32ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 33ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// client3d has to undefine this for now 34ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#define CAN_USE_LOGFONT_NAME 35ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 3682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.comstatic bool isLCD(const SkScalerContext::Rec& rec) { 3782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return SkMask::kLCD16_Format == rec.fMaskFormat || 3882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SkMask::kLCD32_Format == rec.fMaskFormat; 3982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 4082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 41ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comusing namespace skia_advanced_typeface_metrics_utils; 42ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 43ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const uint16_t BUFFERSIZE = (16384 - 32); 44ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic uint8_t glyphbuf[BUFFERSIZE]; 45ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 46ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// Give 1MB font cache budget 47ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#define FONT_CACHE_MEMORY_BUDGET (1024 * 1024) 48ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 49ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** 50ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * Since LOGFONT wants its textsize as an int, and we support fractional sizes, 51ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * and since we have a cache of LOGFONTs for our tyepfaces, we always set the 52ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * lfHeight to a canonical size, and then we use the 2x2 matrix to achieve the 53ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * actual requested size. 54ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 55ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const int gCanonicalTextSize = 64; 56ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 57ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic void make_canonical(LOGFONT* lf) { 58ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf->lfHeight = -gCanonicalTextSize; 5959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfQuality = CLEARTYPE_QUALITY;//PROOF_QUALITY; 6059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfCharSet = DEFAULT_CHARSET; 6182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com// lf->lfClipPrecision = 64; 6259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 6359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 6459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic SkTypeface::Style getStyle(const LOGFONT& lf) { 6559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com unsigned style = 0; 6659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (lf.lfWeight >= FW_BOLD) { 6759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com style |= SkTypeface::kBold; 6859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 6959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (lf.lfItalic) { 7059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com style |= SkTypeface::kItalic; 7159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 7259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return (SkTypeface::Style)style; 7359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 7459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 7559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void setStyle(LOGFONT* lf, SkTypeface::Style style) { 7659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfWeight = (style & SkTypeface::kBold) != 0 ? FW_BOLD : FW_NORMAL ; 7759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfItalic = ((style & SkTypeface::kItalic) != 0); 78ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 79ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 80ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkFixedToFIXED(SkFixed x) { 81ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return *(FIXED*)(&x); 82ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 83ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 84ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkScalarToFIXED(SkScalar x) { 85ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkScalarToFixed(x)); 86ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 87ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 88ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic unsigned calculateGlyphCount(HDC hdc) { 89ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The 'maxp' table stores the number of glyphs at offset 4, in 2 bytes. 90f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org const DWORD maxpTag = 91f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org SkEndian_SwapBE32(SkSetFourByteTag('m', 'a', 'x', 'p')); 92ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t glyphs; 93ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetFontData(hdc, maxpTag, 4, &glyphs, sizeof(glyphs)) != GDI_ERROR) { 94ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkEndian_SwapBE16(glyphs); 95ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 96ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 97ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Binary search for glyph count. 98ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {{0, 1}, {0, 0}, {0, 0}, {0, 1}}; 99ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t max = SK_MaxU16 + 1; 100ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t min = 0; 101ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 102ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while (min < max) { 103ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t mid = min + ((max - min) / 2); 104ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetGlyphOutlineW(hdc, mid, GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, 105ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, &mat2) == GDI_ERROR) { 106ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com max = mid; 107ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 108ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min = mid + 1; 109ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 110ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 111ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(min == max); 112ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return min; 113ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 114ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 115ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic SkTypeface::Style GetFontStyle(const LOGFONT& lf) { 116ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int style = SkTypeface::kNormal; 117ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (lf.lfWeight == FW_SEMIBOLD || lf.lfWeight == FW_DEMIBOLD || lf.lfWeight == FW_BOLD) 118ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com style |= SkTypeface::kBold; 119ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (lf.lfItalic) 120ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com style |= SkTypeface::kItalic; 121ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 122ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return (SkTypeface::Style)style; 123ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 124ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 125ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass LogFontTypeface : public SkTypeface { 126ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 12759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface(SkTypeface::Style style, SkFontID fontID, const LOGFONT& lf) : 12859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface(style, fontID, false), fLogFont(lf) {} 129ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 13059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT fLogFont; 131ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 13259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com static LogFontTypeface* Create(const LOGFONT& lf) { 13359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface::Style style = GetFontStyle(lf); 13459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkFontID fontID = SkTypefaceCache::NewFontID(); 13559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return new LogFontTypeface(style, fontID, lf); 136ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 137ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 138ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 139ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const LOGFONT& get_default_font() { 140ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static LOGFONT gDefaultFont; 141ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return gDefaultFont; 142ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 143ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 14459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic bool FindByLogFont(SkTypeface* face, SkTypeface::Style requestedStyle, void* ctx) { 14559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* lface = reinterpret_cast<LogFontTypeface*>(face); 14659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com const LOGFONT* lf = reinterpret_cast<const LOGFONT*>(ctx); 147ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 14859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return getStyle(lface->fLogFont) == requestedStyle && 14959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com !memcmp(&lface->fLogFont, lf, sizeof(LOGFONT)); 15059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 15159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 15259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com/** 15359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * This guy is public. It first searches the cache, and if a match is not found, 15459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * it creates a new face. 15559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com */ 15659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comSkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT& origLF) { 15759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf = origLF; 15859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com make_canonical(&lf); 15959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface* face = SkTypefaceCache::FindByProc(FindByLogFont, &lf); 16059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 16159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face->ref(); 162ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 16359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face = LogFontTypeface::Create(lf); 16459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypefaceCache::Add(face, getStyle(lf)); 16559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 16659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return face; 167ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 168ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 169db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com/** 170db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com * This guy is public 171db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com */ 172db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.comvoid SkLOGFONTFromTypeface(const SkTypeface* face, LOGFONT* lf) { 173db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com if (NULL == face) { 174db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com *lf = get_default_font(); 175db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com } else { 176db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com *lf = ((const LogFontTypeface*)face)->fLogFont; 177db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com } 178db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com} 179db77a6a9a9bef7033aca9dffa99d52be1f51f8d9reed@google.com 1807d26c590f6bc431a5ecf5c25619b64d058613a4dreed@google.comSkFontID SkFontHost::NextLogicalFont(SkFontID currFontID, SkFontID origFontID) { 181ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Zero means that we don't have any fallback fonts for this fontID. 182ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This function is implemented on Android, but doesn't have much 183ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // meaning here. 184ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; 185ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 186ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 18759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void GetLogFontByID(SkFontID fontID, LOGFONT* lf) { 18859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)SkTypefaceCache::FindByID(fontID); 18959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 19059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com *lf = face->fLogFont; 19159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else { 19259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com sk_bzero(lf, sizeof(LOGFONT)); 19359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 19459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 19559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 1966744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Construct Glyph to Unicode table. 1976744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Unicode code points that require conjugate pairs in utf16 are not 1986744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// supported. 1996744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// TODO(arthurhsu): Add support for conjugate pairs. It looks like that may 2006744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// require parsing the TTF cmap table (platform 4, encoding 12) directly instead 2016744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// of calling GetFontUnicodeRange(). 2026744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.orgstatic void populate_glyph_to_unicode(HDC fontHdc, const unsigned glyphCount, 2036744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkTDArray<SkUnichar>* glyphToUnicode) { 2046744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org DWORD glyphSetBufferSize = GetFontUnicodeRanges(fontHdc, NULL); 2056744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (!glyphSetBufferSize) { 2066744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2076744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2086744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2096744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTDeleteArray<BYTE> glyphSetBuffer(new BYTE[glyphSetBufferSize]); 2106744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GLYPHSET* glyphSet = 2116744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org reinterpret_cast<LPGLYPHSET>(glyphSetBuffer.get()); 2126744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (GetFontUnicodeRanges(fontHdc, glyphSet) != glyphSetBufferSize) { 2136744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2146744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2156744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2166744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org glyphToUnicode->setCount(glyphCount); 2176744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org memset(glyphToUnicode->begin(), 0, glyphCount * sizeof(SkUnichar)); 2186744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (DWORD i = 0; i < glyphSet->cRanges; ++i) { 2196744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // There is no guarantee that within a Unicode range, the corresponding 2206744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // glyph id in a font file are continuous. So, even if we have ranges, 2216744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // we can't just use the first and last entry of the range to compute 2226744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // result. We need to enumerate them one by one. 2236744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org int count = glyphSet->ranges[i].cGlyphs; 2246744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WCHAR> chars(count + 1); 2256744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[count] = 0; // termintate string 2266744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WORD> glyph(count); 2276744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2286744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[j] = glyphSet->ranges[i].wcLow + j; 2296744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2306744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GetGlyphIndicesW(fontHdc, chars.get(), count, glyph.get(), 2316744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GGI_MARK_NONEXISTING_GLYPHS); 2326744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // If the glyph ID is valid, and the glyph is not mapped, then we will 2336744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // fill in the char id into the vector. If the glyph is mapped already, 2346744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // skip it. 2356744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // TODO(arthurhsu): better improve this. e.g. Get all used char ids from 2366744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // font cache, then generate this mapping table from there. It's 2376744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // unlikely to have collisions since glyph reuse happens mostly for 2386744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // different Unicode pages. 2396744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2406744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (glyph[j] != 0xffff && glyph[j] < glyphCount && 2416744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] == 0) { 2426744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] = chars[j]; 2436744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2446744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2456744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2466744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org} 2476744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 24859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com////////////////////////////////////////////////////////////////////////////////////////////// 24959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 250ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass SkScalerContext_Windows : public SkScalerContext { 251ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 252ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalerContext_Windows(const SkDescriptor* desc); 253ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual ~SkScalerContext_Windows(); 254ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 255ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprotected: 256ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual unsigned generateGlyphCount(); 257ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual uint16_t generateCharToGlyph(SkUnichar uni); 258ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateAdvance(SkGlyph* glyph); 259ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateMetrics(SkGlyph* glyph); 260ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateImage(const SkGlyph& glyph); 261ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generatePath(const SkGlyph& glyph, SkPath* path); 262ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateFontMetrics(SkPaint::FontMetrics* mX, SkPaint::FontMetrics* mY); 263ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //virtual SkDeviceContext getDC() {return ddc;} 264ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprivate: 265ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalar fScale; // to get from canonical size to real size 266ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com MAT2 fMat22; 267ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com XFORM fXform; 268ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC fDDC; 269ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fSavefont; 270ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fFont; 271ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_CACHE fSC; 272ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int fGlyphCount; 2731dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 2741dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com HFONT fHiResFont; 2751dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com MAT2 fMat22Identity; 2761dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkMatrix fHiResMatrix; 277ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 278ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 279ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic float mul2float(SkScalar a, SkScalar b) { 280ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkScalarToFloat(SkScalarMul(a, b)); 281ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 282ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 283ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic FIXED float2FIXED(float x) { 284ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkFloatToFixed(x)); 285ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 286ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 28759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic SkMutex gFTMutex; 28859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 2891dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com#define HIRES_TEXTSIZE 2048 2901dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com#define HIRES_SHIFT 11 2911dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.comstatic inline SkFixed HiResToFixed(int value) { 2921dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com return value << (16 - HIRES_SHIFT); 2931dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com} 2941dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 2951dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.comstatic bool needHiResMetrics(const SkScalar mat[2][2]) { 2961dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com return mat[1][0] || mat[0][1]; 2971dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com} 2981dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 29982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.comstatic BYTE compute_quality(const SkScalerContext::Rec& rec) { 30082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com switch (rec.fMaskFormat) { 30182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kBW_Format: 30282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return NONANTIALIASED_QUALITY; 30382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kLCD16_Format: 30482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com case SkMask::kLCD32_Format: 30582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return CLEARTYPE_QUALITY; 30682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com default: 30782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return ANTIALIASED_QUALITY; 30882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 30982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 31082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 311ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::SkScalerContext_Windows(const SkDescriptor* desc) 312ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com : SkScalerContext(desc), fDDC(0), fFont(0), fSavefont(0), fSC(0) 313ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com , fGlyphCount(-1) { 314ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 315ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 316ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fScale = fRec.fTextSize / gCanonicalTextSize; 317ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 318ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM11 = mul2float(fScale, fRec.fPost2x2[0][0]); 319ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM12 = mul2float(fScale, fRec.fPost2x2[1][0]); 320ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM21 = mul2float(fScale, fRec.fPost2x2[0][1]); 321ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM22 = mul2float(fScale, fRec.fPost2x2[1][1]); 322ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eDx = 0; 323ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eDy = 0; 324ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 325ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM11 = float2FIXED(fXform.eM11); 326ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM12 = float2FIXED(fXform.eM12); 327ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM21 = float2FIXED(-fXform.eM21); 328ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM22 = float2FIXED(-fXform.eM22); 329ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 330ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC = ::CreateCompatibleDC(NULL); 3311dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SetGraphicsMode(fDDC, GM_ADVANCED); 332ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetBkMode(fDDC, TRANSPARENT); 333ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 334ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Scaling by the DPI is inconsistent with how Skia draws elsewhere 335ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //SkScalar height = -(fRec.fTextSize * GetDeviceCaps(ddc, LOGPIXELSY) / 72); 33659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 33759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fRec.fFontID, &lf); 338ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -gCanonicalTextSize; 33982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com lf.lfQuality = compute_quality(fRec); 340ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fFont = CreateFontIndirect(&lf); 3411dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 3421dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com // if we're rotated, or want fractional widths, create a hires font 3431dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResFont = 0; 3441dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (needHiResMetrics(fRec.fPost2x2) || (fRec.fFlags & kSubpixelPositioning_Flag)) { 3451dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com lf.lfHeight = -HIRES_TEXTSIZE; 3461dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResFont = CreateFontIndirect(&lf); 3471dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 3481dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fMat22Identity.eM11 = fMat22Identity.eM22 = SkFixedToFIXED(SK_Fixed1); 3491dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fMat22Identity.eM12 = fMat22Identity.eM21 = SkFixedToFIXED(0); 3501dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 3511dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com // construct a matrix to go from HIRES logical units to our device units 3521dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fRec.getSingleMatrix(&fHiResMatrix); 3531dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkScalar scale = SkScalarInvert(SkIntToScalar(HIRES_TEXTSIZE)); 3541dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResMatrix.preScale(scale, scale); 3551dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 356ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fSavefont = (HFONT)SelectObject(fDDC, fFont); 357ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 358ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 359ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::~SkScalerContext_Windows() { 360ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fDDC) { 361ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::SelectObject(fDDC, fSavefont); 362ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteDC(fDDC); 363ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 364ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fFont) { 365ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteObject(fFont); 366ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 3671dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (fHiResFont) { 3681dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com ::DeleteObject(fHiResFont); 3691dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 370ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fSC) { 371ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::ScriptFreeCache(&fSC); 372ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 373ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 374ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 375ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comunsigned SkScalerContext_Windows::generateGlyphCount() { 376ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fGlyphCount < 0) { 377ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fGlyphCount = calculateGlyphCount(fDDC); 378ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 379ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return fGlyphCount; 380ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 381ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 382ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comuint16_t SkScalerContext_Windows::generateCharToGlyph(SkUnichar uni) { 383ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t index = 0; 384ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WCHAR c[2]; 385ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Support characters that generate more than one glyph. 386ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkUTF16_FromUnichar(uni, (uint16_t*)c) == 1) { 387ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Type1 fonts fail with uniscribe API. Use GetGlyphIndices for plane 0. 388ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(GetGlyphIndicesW(fDDC, c, 1, &index, 0)); 389ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 390ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Use uniscribe to detemine glyph index for non-BMP characters. 391ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Need to add extra item to SCRIPT_ITEM to work around a bug in older 392ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // windows versions. https://bugzilla.mozilla.org/show_bug.cgi?id=366643 393ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_ITEM si[2 + 1]; 394ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int items; 395ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult( 396ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SUCCEEDED(ScriptItemize(c, 2, 2, NULL, NULL, si, &items))); 397ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 398ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WORD log[2]; 399ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_VISATTR vsa; 400ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int glyphs; 401ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(SUCCEEDED(ScriptShape( 402ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC, &fSC, c, 2, 1, &si[0].a, &index, log, &vsa, &glyphs))); 403ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 404ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return index; 405ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 406ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 407ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateAdvance(SkGlyph* glyph) { 408ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com this->generateMetrics(glyph); 409ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 410ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 411ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateMetrics(SkGlyph* glyph) { 412ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 413ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 414ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 415ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 4161dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com sk_bzero(&gm, sizeof(gm)); 417ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 418ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fRsbDelta = 0; 419ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLsbDelta = 0; 420ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 421ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Note: need to use GGO_GRAY8_BITMAP instead of GGO_METRICS because GGO_METRICS returns a smaller 422ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // BlackBlox; we need the bigger one in case we need the image. fAdvance is the same. 423ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 424ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 425ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != ret) { 426ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (ret == 0) { 427ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // for white space, ret is zero and gmBlackBoxX, gmBlackBoxY are 1 incorrectly! 428ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com gm.gmBlackBoxX = gm.gmBlackBoxY = 0; 429ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 430ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = gm.gmBlackBoxX; 431ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fHeight = gm.gmBlackBoxY; 432ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fTop = SkToS16(gm.gmptGlyphOrigin.y - gm.gmBlackBoxY); 433ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLeft = SkToS16(gm.gmptGlyphOrigin.x); 434ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceX = SkIntToFixed(gm.gmCellIncX); 435ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceY = -SkIntToFixed(gm.gmCellIncY); 436ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 43782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // we outset by 1 in all dimensions, since the image may bleed outside 438ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // of the computed bounds returned by GetGlyphOutline. 439ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This was deduced by trial and error for small text (e.g. 8pt), so there 440ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // maybe a more precise way to make this adjustment... 44182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com glyph->fWidth += 2; 44282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com glyph->fHeight += 2; 44382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com glyph->fTop -= 1; 44482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com glyph->fLeft -= 1; 4451dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com 4461dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (fHiResFont) { 4471dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SelectObject(fDDC, fHiResFont); 4481dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com sk_bzero(&gm, sizeof(gm)); 4491dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22Identity); 4501dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com if (GDI_ERROR != ret) { 4511dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SkPoint advance; 4521dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com fHiResMatrix.mapXY(SkIntToScalar(gm.gmCellIncX), SkIntToScalar(gm.gmCellIncY), &advance); 4531dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com glyph->fAdvanceX = SkScalarToFixed(advance.fX); 4541dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com glyph->fAdvanceY = SkScalarToFixed(advance.fY); 4551dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 4561dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com SelectObject(fDDC, fFont); 4571dd17a133f4fa5c5a0c752e6b9a6f7af6f329fb8reed@google.com } 458ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 459ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = 0; 460ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 461ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 462ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 463ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateFontMetrics(SkPaint::FontMetrics* mx, SkPaint::FontMetrics* my) { 464ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// Note: This code was borrowed from generateLineHeight, which has a note 465ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// stating that it may be incorrect. 466ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(mx || my)) 467ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 468ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 469ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 470ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 471ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 472ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 473ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetOutlineTextMetrics(fDDC, sizeof(otm), &otm); 474ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (sizeof(otm) != ret) { 475ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 476ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 477ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 478ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (mx) { 479ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fTop = -fScale * otm.otmTextMetrics.tmAscent; 480ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fAscent = -fScale * otm.otmAscent; 481ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fDescent = -fScale * otm.otmDescent; 482ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fBottom = fScale * otm.otmTextMetrics.tmDescent; 483ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 484ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com + otm.otmTextMetrics.tmExternalLeading); 485ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 486ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 487ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (my) { 488ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fTop = -fScale * otm.otmTextMetrics.tmAscent; 489ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fAscent = -fScale * otm.otmAscent; 490ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fDescent = -fScale * otm.otmDescent; 491ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fBottom = fScale * otm.otmTextMetrics.tmDescent; 492ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 493ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com + otm.otmTextMetrics.tmExternalLeading); 494ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 495ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 496ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 497ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkColorPriv.h" 498ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 49982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.comstatic inline uint8_t rgb_to_a8(uint32_t rgb) { 50082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // can pick any component, since we're grayscale 50182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com int r = (rgb >> 16) & 0xFF; 50282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // invert, since we draw black-on-white, but we want the original 50382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // src mask values. 50482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com return 255 - r; 50582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com} 50682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 507ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline uint16_t rgb_to_lcd16(uint32_t rgb) { 508ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int r = (rgb >> 16) & 0xFF; 509ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int g = (rgb >> 8) & 0xFF; 510ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int b = (rgb >> 0) & 0xFF; 511ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 512ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // invert, since we draw black-on-white, but we want the original 513ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // src mask values. 514ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com r = 255 - r; 515ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com g = 255 - g; 516ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com b = 255 - b; 517ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkPackRGB16(SkR32ToR16(r), SkG32ToG16(g), SkB32ToB16(b)); 518ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 519ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 5206271117d826098c1399cf7442f8eea2d665cb78areed@google.comstatic int alignTo32(int n) { 5216271117d826098c1399cf7442f8eea2d665cb78areed@google.com return (n + 31) & ~31; 5226271117d826098c1399cf7442f8eea2d665cb78areed@google.com} 5236271117d826098c1399cf7442f8eea2d665cb78areed@google.com 5246271117d826098c1399cf7442f8eea2d665cb78areed@google.comstruct MyBitmapInfo : public BITMAPINFO { 5256271117d826098c1399cf7442f8eea2d665cb78areed@google.com RGBQUAD fMoreSpaceForColors[1]; 5266271117d826098c1399cf7442f8eea2d665cb78areed@google.com}; 5276271117d826098c1399cf7442f8eea2d665cb78areed@google.com 528ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateImage(const SkGlyph& glyph) { 529ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 530ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 531ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 532ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 533ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 5346271117d826098c1399cf7442f8eea2d665cb78areed@google.com const bool isBW = SkMask::kBW_Format == fRec.fMaskFormat; 53582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const bool isAA = !isLCD(fRec); 53682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com HDC dc = CreateCompatibleDC(0); 53782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com void* bits = 0; 53882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com int biWidth = isBW ? alignTo32(glyph.fWidth) : glyph.fWidth; 53982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 54082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com MyBitmapInfo info; 54182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com sk_bzero(&info, sizeof(info)); 54282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com if (isBW) { 54382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com RGBQUAD blackQuad = { 0, 0, 0, 0 }; 54482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com RGBQUAD whiteQuad = { 0xFF, 0xFF, 0xFF, 0 }; 54582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiColors[0] = blackQuad; 54682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiColors[1] = whiteQuad; 54782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 54882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biSize = sizeof(info.bmiHeader); 54982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biWidth = biWidth; 55082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biHeight = glyph.fHeight; 55182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biPlanes = 1; 55282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biBitCount = isBW ? 1 : 32; 55382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biCompression = BI_RGB; 55482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com if (isBW) { 55582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com info.bmiHeader.biClrUsed = 2; 55682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 55782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com HBITMAP bm = CreateDIBSection(dc, &info, DIB_RGB_COLORS, &bits, 0, 0); 55882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SelectObject(dc, bm); 55982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 56082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // erase to white 56182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com size_t srcRB = isBW ? (biWidth >> 3) : (glyph.fWidth << 2); 56282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com size_t size = glyph.fHeight * srcRB; 56382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com memset(bits, isBW ? 0 : 0xFF, size); 56482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 56582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SetGraphicsMode(dc, GM_ADVANCED); 56682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SetBkMode(dc, TRANSPARENT); 56782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SetTextAlign(dc, TA_LEFT | TA_BASELINE); 56882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 56982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com XFORM xform = fXform; 57082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com xform.eDx = (float)-glyph.fLeft; 57182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com xform.eDy = (float)-glyph.fTop; 57282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SetWorldTransform(dc, &xform); 57382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 57482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com HGDIOBJ prevFont = SelectObject(dc, fFont); 57582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com COLORREF color = SetTextColor(dc, isBW ? 0xFFFFFF : 0); 57682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com SkASSERT(color != CLR_INVALID); 57782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com uint16_t glyphID = glyph.getGlyphID(); 578c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com#if defined(UNICODE) 57982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCWSTR)&glyphID, 1, NULL); 580c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com#else 58182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCSTR)&glyphID, 1, NULL); 582c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com#endif 58382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com GdiFlush(); 58482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 58582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // downsample from rgba to rgb565 58682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com int width = glyph.fWidth; 58782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com size_t dstRB = glyph.rowBytes(); 58882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com if (isBW) { 58982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const uint8_t* src = (const uint8_t*)bits; 59082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // gdi's bitmap is upside-down, so we reverse dst walking in Y 59182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com uint8_t* dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 59282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 59382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com memcpy(dst, src, dstRB); 59482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com src += srcRB; 59582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst -= dstRB; 596ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 59782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } else if (isAA) { 59882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const uint32_t* src = (const uint32_t*)bits; 59982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // gdi's bitmap is upside-down, so we reverse dst walking in Y 60082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com uint8_t* dst = (uint8_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 60182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 60282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int i = 0; i < width; i++) { 60382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst[i] = rgb_to_a8(src[i]); 60482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } 60582a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com src = (const uint32_t*)((const char*)src + srcRB); 60682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst -= dstRB; 607e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com } 60882a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com } else { // LCD16 60982a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com const uint32_t* src = (const uint32_t*)bits; 61082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com // gdi's bitmap is upside-down, so we reverse dst walking in Y 61182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com uint16_t* dst = (uint16_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 61282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int y = 0; y < glyph.fHeight; y++) { 61382a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com for (int i = 0; i < width; i++) { 61482a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst[i] = rgb_to_lcd16(src[i]); 615ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 61682a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com src = (const uint32_t*)((const char*)src + srcRB); 61782a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com dst = (uint16_t*)((char*)dst - dstRB); 618ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 619ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 62082a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com 62182a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com DeleteDC(dc); 62282a34d83f646d069ef2d1d7b649d0a0b1829d62freed@google.com DeleteObject(bm); 623ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 624ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 625ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generatePath(const SkGlyph& glyph, SkPath* path) { 626ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 627ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 628ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 629ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(&glyph && path); 630ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 631ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 632ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->reset(); 633ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 634ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#if 0 635ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char buf[1024]; 636ac6b97972d3c5a8e10b79c1409818756310e0f12reed@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); 637ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OutputDebugString(buf); 638ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 639ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 640ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 641ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_NATIVE | GGO_GLYPH_INDEX, &gm, BUFFERSIZE, glyphbuf, &fMat22); 642ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 643ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != total_size) { 644ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 645ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_glyph = glyphbuf; 646ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_glyph = glyphbuf + total_size; 647ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 648ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_glyph < end_glyph) { 649ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYGONHEADER* th = (TTPOLYGONHEADER*)cur_glyph; 650ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 651ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_poly = cur_glyph + th->cb; 652ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_poly = cur_glyph + sizeof(TTPOLYGONHEADER); 653ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 654ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->moveTo(SkFixedToScalar(*(SkFixed*)(&th->pfxStart.x)), SkFixedToScalar(*(SkFixed*)(&th->pfxStart.y))); 655ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 656ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_poly < end_poly) { 657ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYCURVE* pc = (const TTPOLYCURVE*)cur_poly; 658ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 659ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_LINE) { 660ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t i = 0; i < pc->cpfx; i++) { 661ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->lineTo(SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].x)), SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].y))); 662ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 663ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 664ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 665ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_QSPLINE) { 666ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t u = 0; u < pc->cpfx - 1; u++) { // Walk through points in spline 667ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_b = pc->apfx[u]; // B is always the current point 668ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_c = pc->apfx[u+1]; 669ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 670ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (u < pc->cpfx - 2) { // If not on last spline, compute C 671ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.x = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.x), *(SkFixed*)(&pnt_c.x))); 672ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.y = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.y), *(SkFixed*)(&pnt_c.y))); 673ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 674ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 675ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->quadTo(SkFixedToScalar(*(SkFixed*)(&pnt_b.x)), SkFixedToScalar(*(SkFixed*)(&pnt_b.y)), SkFixedToScalar(*(SkFixed*)(&pnt_c.x)), SkFixedToScalar(*(SkFixed*)(&pnt_c.y))); 676ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 677ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 678ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_poly += sizeof(uint16_t) * 2 + sizeof(POINTFX) * pc->cpfx; 679ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 680ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_glyph += th->cb; 681ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->close(); 682ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 683ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 684ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else { 685ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 686ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 687ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //char buf[1024]; 688ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //sprintf(buf, "generatePath: count:%d\n", count); 689ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //OutputDebugString(buf); 690ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 691ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 692ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) { 693ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(!"SkFontHost::Serialize unimplemented"); 694ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 695ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 696ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::Deserialize(SkStream* stream) { 697ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(!"SkFontHost::Deserialize unimplemented"); 698ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 699ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 700ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 701ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic bool getWidthAdvance(HDC hdc, int gId, int16_t* advance) { 702ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Initialize the MAT2 structure to the identify transformation matrix. 703ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {SkScalarToFIXED(1), SkScalarToFIXED(0), 704ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalarToFIXED(0), SkScalarToFIXED(1)}; 705ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int flags = GGO_METRICS | GGO_GLYPH_INDEX; 706ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 707ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR == GetGlyphOutline(hdc, gId, flags, &gm, 0, NULL, &mat2)) { 708ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return false; 709ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 710ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(advance); 711ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com *advance = gm.gmCellIncX; 712ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return true; 713ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 714ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 715ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// static 716ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics( 717325cb9aa17b94258b362082eb3a799524f4345f3vandebo@chromium.org uint32_t fontID, 718325cb9aa17b94258b362082eb3a799524f4345f3vandebo@chromium.org SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) { 71959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 72059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fontID, &lf); 721ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAdvancedTypefaceMetrics* info = NULL; 722ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 723ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = CreateCompatibleDC(NULL); 724ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT font = CreateFontIndirect(&lf); 725ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 726ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT designFont = NULL; 727ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 728ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // To request design units, create a logical font whose height is specified 729ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // as unitsPerEm. 730ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 731ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetOutlineTextMetrics(hdc, sizeof(otm), &otm) || 732ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com !GetTextFace(hdc, LF_FACESIZE, lf.lfFaceName)) { 733ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 734ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 735ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -SkToS32(otm.otmEMSquare); 736ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com designFont = CreateFontIndirect(&lf); 737ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, designFont); 738ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetOutlineTextMetrics(hdc, sizeof(otm), &otm)) { 739ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 740ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 741ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const unsigned glyphCount = calculateGlyphCount(hdc); 742ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 743ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info = new SkAdvancedTypefaceMetrics; 744ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fEmSize = otm.otmEMSquare; 745ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fMultiMaster = false; 746ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fLastGlyphID = SkToU16(glyphCount - 1); 747ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle = 0; 748ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 749ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Get the buffer size needed first. 750ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t str_len = WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, NULL, 751ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 0, NULL, NULL); 752ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Allocate a buffer (str_len already has terminating null accounted for). 753ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char *familyName = new char[str_len]; 754ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Now actually convert the string. 755ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, familyName, str_len, 756ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, NULL); 757ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(familyName); 758ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com delete [] familyName; 759ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 760ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(lf.lfFaceName); 761ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 762ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 7636744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (perGlyphInfo & SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo) { 7646744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org populate_glyph_to_unicode(hdc, glyphCount, &(info->fGlyphToUnicode)); 7656744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 7666744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 767ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & TMPF_TRUETYPE) { 768ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; 769ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 770ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kOther_Font; 771ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = 0; 772ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = 0; 773ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = 0; 774ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 775ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = 0; 776ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = SkIRect::MakeEmpty(); 777ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 778ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 779ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 780ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If this bit is clear the font is a fixed pitch font. 781ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(otm.otmTextMetrics.tmPitchAndFamily & TMPF_FIXED_PITCH)) { 782ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kFixedPitch_Style; 783ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 784ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmItalic) { 785ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kItalic_Style; 786ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 787ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Setting symbolic style by default for now. 788ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSymbolic_Style; 789ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & FF_ROMAN) { 790ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; 791ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else if (otm.otmTextMetrics.tmPitchAndFamily & FF_SCRIPT) { 792ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; 793ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 794ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 795ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The main italic angle of the font, in tenths of a degree counterclockwise 796ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // from vertical. 797ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = otm.otmItalicAngle / 10; 798ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = SkToS16(otm.otmTextMetrics.tmAscent); 799ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = SkToS16(-otm.otmTextMetrics.tmDescent); 800ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Use alternate cap height calculation. 801ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // MSDN says otmsCapEmHeight is not support but it is returning a value on 802ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // my Win7 box. 803ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = otm.otmsCapEmHeight; 804ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = 805ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkIRect::MakeLTRB(otm.otmrcFontBox.left, otm.otmrcFontBox.top, 806ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com otm.otmrcFontBox.right, otm.otmrcFontBox.bottom); 807ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 808ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Figure out a good guess for StemV - Min width of i, I, !, 1. 809ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This probably isn't very good with an italic font. 810ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int16_t min_width = SHRT_MAX; 811ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 812ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char stem_chars[] = {'i', 'I', '!', '1'}; 813ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(stem_chars); i++) { 814ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ABC abcWidths; 815ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetCharABCWidths(hdc, stem_chars[i], stem_chars[i], &abcWidths)) { 816ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int16_t width = abcWidths.abcB; 817ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (width > 0 && width < min_width) { 818ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min_width = width; 819ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = min_width; 820ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 821ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 822ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 823ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 824ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is set, the font may not be embedded in a document. 825ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is clear, the font can be embedded. 826ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 2 is set, the embedding is read-only. 827ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmfsType & 0x1) { 828ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kNotEmbeddable_Font; 8290e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org } else if (perGlyphInfo & 8300e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo) { 831ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fGlyphWidths.reset( 832ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com getAdvanceData(hdc, glyphCount, &getWidthAdvance)); 833ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 834ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 835ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comError: 836ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 837ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(designFont); 838ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 839ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 840ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 841ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 842ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 843ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 844ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { 845ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 846ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //Should not be used on Windows, keep linker happy 847ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 848ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkCreateTypefaceFromLOGFONT(get_default_font()); 849ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 850ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 851ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkStream* SkFontHost::OpenStream(SkFontID uniqueID) { 852f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org const DWORD kTTCTag = 853f4c2622a1a3489988f2d85a81fdc132b17a92bddctguil@chromium.org SkEndian_SwapBE32(SkSetFourByteTag('t', 't', 'c', 'f')); 85459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 85559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(uniqueID, &lf); 856ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 857ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = ::CreateCompatibleDC(NULL); 85859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com HFONT font = CreateFontIndirect(&lf); 859ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 860ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 861d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org SkMemoryStream* stream = NULL; 862d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org DWORD tables[2] = {kTTCTag, 0}; 863d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org for (int i = 0; i < SK_ARRAY_COUNT(tables); i++) { 864d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org size_t bufferSize = GetFontData(hdc, tables[i], 0, NULL, 0); 865d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org if (bufferSize != GDI_ERROR) { 866d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org stream = new SkMemoryStream(bufferSize); 867d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org if (GetFontData(hdc, tables[i], 0, (void*)stream->getMemoryBase(), 868d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org bufferSize)) { 869d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org break; 870d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } else { 871d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org delete stream; 872d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org stream = NULL; 873d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } 874d604481f7a2587f5b400d2a0a68a6491a0d584c7vandebo@chromium.org } 875ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 876ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 877ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 878ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 879ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 880ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 881ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return stream; 882ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 883ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 884ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext* SkFontHost::CreateScalerContext(const SkDescriptor* desc) { 885ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkNEW_ARGS(SkScalerContext_Windows, (desc)); 886ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 887ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 888ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** Return the closest matching typeface given either an existing family 889ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com (specified by a typeface in that family) or by a familyName, and a 890ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com requested style. 891ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1) If familyFace is null, use famillyName. 892ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 2) If famillyName is null, use familyFace. 893ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 3) If both are null, return the default font that best matches style 894ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com This MUST not return NULL. 895ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 896ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 897ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace, 898ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const char familyName[], 899ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const void* data, size_t bytelength, 900ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkTypeface::Style style) { 90159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 902ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (NULL == familyFace && NULL == familyName) { 90359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = get_default_font(); 90459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else if (familyFace) { 90559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)familyFace; 90659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = face->fLogFont; 907ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 90859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com memset(&lf, 0, sizeof(LOGFONT)); 909ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 91059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Get the buffer size needed first. 91159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com size_t str_len = ::MultiByteToWideChar(CP_UTF8, 0, familyName, 91259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com -1, NULL, 0); 91359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Allocate a buffer (str_len already has terminating null 91459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // accounted for). 91559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wchar_t *wideFamilyName = new wchar_t[str_len]; 91659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Now actually convert the string. 91759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::MultiByteToWideChar(CP_UTF8, 0, familyName, -1, 91859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wideFamilyName, str_len); 91959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::wcsncpy(lf.lfFaceName, wideFamilyName, LF_FACESIZE); 92059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com delete [] wideFamilyName; 921ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 92259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::strncpy(lf.lfFaceName, familyName, LF_FACESIZE); 923ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 92459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf.lfFaceName[LF_FACESIZE-1] = '\0'; 925ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 92659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com setStyle(&lf, style); 92759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return SkCreateTypefaceFromLOGFONT(lf); 928ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 929ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 930ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comsize_t SkFontHost::ShouldPurgeFontCache(size_t sizeAllocatedSoFar) { 931ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (sizeAllocatedSoFar > FONT_CACHE_MEMORY_BUDGET) 932ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return sizeAllocatedSoFar - FONT_CACHE_MEMORY_BUDGET; 933ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else 934ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; // nothing to do 935ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 936ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 937ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comint SkFontHost::ComputeGammaFlag(const SkPaint& paint) { 938ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; 939ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 940ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 941ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::GetGammaTables(const uint8_t* tables[2]) { 942ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com tables[0] = NULL; // black gamma (e.g. exp=1.4) 943ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com tables[1] = NULL; // white gamma (e.g. exp= 1/1.4) 944ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 945ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 946ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { 947ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com printf("SkFontHost::CreateTypefaceFromFile unimplemented"); 948ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 949ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 950ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 951da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.comstatic bool bothZero(SkScalar a, SkScalar b) { 952da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com return 0 == a && 0 == b; 953da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com} 954da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 955da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com// returns false if there is any non-90-rotation or skew 956da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.comstatic bool isAxisAligned(const SkScalerContext::Rec& rec) { 957da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com return 0 == rec.fPreSkewX && 958da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com (bothZero(rec.fPost2x2[0][1], rec.fPost2x2[1][0]) || 959da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com bothZero(rec.fPost2x2[0][0], rec.fPost2x2[1][1])); 960da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com} 961da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 962ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::FilterRec(SkScalerContext::Rec* rec) { 963e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com unsigned flagsWeDontSupport = SkScalerContext::kDevKernText_Flag | 964e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kAutohinting_Flag | 965e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kEmbeddedBitmapText_Flag | 966e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kEmbolden_Flag | 967e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kLCD_BGROrder_Flag | 968e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkScalerContext::kLCD_Vertical_Flag; 969e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com rec->fFlags &= ~flagsWeDontSupport; 970e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com 971e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkPaint::Hinting h = rec->getHinting(); 972da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 973da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // I think we can support no-hinting, if we get hires outlines and just 974da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // use skia to rasterize into a gray-scale mask... 975da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#if 0 976e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com switch (h) { 977e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kNo_Hinting: 978e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kSlight_Hinting: 979e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com h = SkPaint::kNo_Hinting; 980e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com break; 981e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kNormal_Hinting: 982e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com case SkPaint::kFull_Hinting: 983e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com h = SkPaint::kNormal_Hinting; 984e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com break; 985e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com default: 986e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com SkASSERT(!"unknown hinting"); 987e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com } 988da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#else 989da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com h = SkPaint::kNormal_Hinting; 990da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com#endif 991e8fab0111d11316a027bc6ae60c62cc6575cdc05reed@google.com rec->setHinting(h); 992da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com 993da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com // Disable LCD when rotated, since GDI's output is ugly 994da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com if (isLCD(*rec) && !isAxisAligned(*rec)) { 995da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com rec->fMaskFormat = SkMask::kA8_Format; 996da44067ec97fddd3bab52da34e2fc5ddc5241c34reed@google.com } 997ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 998ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 999ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif // WIN32 1000