SkFontHost_win.cpp revision 6744d498fcbbbcf503ec80c4d43dd8f118a88597
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 "SkStream.h" 19ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 20ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkEndian.h" 21ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkFontHost.h" 22ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkDescriptor.h" 23ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkAdvancedTypefaceMetrics.h" 24ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkStream.h" 25ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkThread.h" 26ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkTypeface_win.h" 2759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com#include "SkTypefaceCache.h" 28ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkUtils.h" 29ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 30ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef WIN32 31ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "windows.h" 32ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "tchar.h" 33ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "Usp10.h" 34ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 35ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// client3d has to undefine this for now 36ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#define CAN_USE_LOGFONT_NAME 37ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 38ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comusing namespace skia_advanced_typeface_metrics_utils; 39ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 40ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const uint16_t BUFFERSIZE = (16384 - 32); 41ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic uint8_t glyphbuf[BUFFERSIZE]; 42ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 43ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// Give 1MB font cache budget 44ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#define FONT_CACHE_MEMORY_BUDGET (1024 * 1024) 45ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 46ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** 47ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * Since LOGFONT wants its textsize as an int, and we support fractional sizes, 48ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * and since we have a cache of LOGFONTs for our tyepfaces, we always set the 49ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * lfHeight to a canonical size, and then we use the 2x2 matrix to achieve the 50ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com * actual requested size. 51ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 52ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const int gCanonicalTextSize = 64; 53ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 54ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic void make_canonical(LOGFONT* lf) { 55ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf->lfHeight = -gCanonicalTextSize; 5659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfQuality = CLEARTYPE_QUALITY;//PROOF_QUALITY; 5759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfCharSet = DEFAULT_CHARSET; 5859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 5959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 6059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic SkTypeface::Style getStyle(const LOGFONT& lf) { 6159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com unsigned style = 0; 6259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (lf.lfWeight >= FW_BOLD) { 6359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com style |= SkTypeface::kBold; 6459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 6559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (lf.lfItalic) { 6659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com style |= SkTypeface::kItalic; 6759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 6859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return (SkTypeface::Style)style; 6959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 7059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 7159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void setStyle(LOGFONT* lf, SkTypeface::Style style) { 7259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfWeight = (style & SkTypeface::kBold) != 0 ? FW_BOLD : FW_NORMAL ; 7359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf->lfItalic = ((style & SkTypeface::kItalic) != 0); 74ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 75ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 76ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkFixedToFIXED(SkFixed x) { 77ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return *(FIXED*)(&x); 78ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 79ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 80ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline FIXED SkScalarToFIXED(SkScalar x) { 81ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkScalarToFixed(x)); 82ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 83ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 84ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic unsigned calculateGlyphCount(HDC hdc) { 85ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The 'maxp' table stores the number of glyphs at offset 4, in 2 bytes. 86ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const DWORD maxpTag = *(DWORD*) "maxp"; 87ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t glyphs; 88ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetFontData(hdc, maxpTag, 4, &glyphs, sizeof(glyphs)) != GDI_ERROR) { 89ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkEndian_SwapBE16(glyphs); 90ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 91ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 92ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Binary search for glyph count. 93ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {{0, 1}, {0, 0}, {0, 0}, {0, 1}}; 94ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t max = SK_MaxU16 + 1; 95ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t min = 0; 96ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 97ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while (min < max) { 98ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int32_t mid = min + ((max - min) / 2); 99ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetGlyphOutlineW(hdc, mid, GGO_METRICS | GGO_GLYPH_INDEX, &gm, 0, 100ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, &mat2) == GDI_ERROR) { 101ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com max = mid; 102ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 103ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min = mid + 1; 104ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 105ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 106ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(min == max); 107ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return min; 108ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 109ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 110ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic SkTypeface::Style GetFontStyle(const LOGFONT& lf) { 111ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int style = SkTypeface::kNormal; 112ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (lf.lfWeight == FW_SEMIBOLD || lf.lfWeight == FW_DEMIBOLD || lf.lfWeight == FW_BOLD) 113ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com style |= SkTypeface::kBold; 114ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (lf.lfItalic) 115ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com style |= SkTypeface::kItalic; 116ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 117ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return (SkTypeface::Style)style; 118ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 119ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 120ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass LogFontTypeface : public SkTypeface { 121ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 12259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface(SkTypeface::Style style, SkFontID fontID, const LOGFONT& lf) : 12359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface(style, fontID, false), fLogFont(lf) {} 124ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 12559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT fLogFont; 126ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 12759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com static LogFontTypeface* Create(const LOGFONT& lf) { 12859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface::Style style = GetFontStyle(lf); 12959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkFontID fontID = SkTypefaceCache::NewFontID(); 13059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return new LogFontTypeface(style, fontID, lf); 131ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 132ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 133ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 134ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic const LOGFONT& get_default_font() { 135ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static LOGFONT gDefaultFont; 136ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // don't hardcode on Windows, Win2000, XP, Vista, and international all have different default 137ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // and the user could change too 138ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 139ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 140ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// lfMessageFont is garbage on my XP, so skip for now 141ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#if 0 142ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (gDefaultFont.lfFaceName[0] != 0) { 143ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return gDefaultFont; 144ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 145ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 146ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NONCLIENTMETRICS ncm; 147ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ncm.cbSize = sizeof(NONCLIENTMETRICS); 148ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof(ncm), &ncm, 0); 149ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 150ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //memcpy(&gDefaultFont, &(ncm.lfMessageFont), sizeof(LOGFONT)); 151ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 152ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 153ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return gDefaultFont; 154ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 155ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 15659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic bool FindByLogFont(SkTypeface* face, SkTypeface::Style requestedStyle, void* ctx) { 15759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* lface = reinterpret_cast<LogFontTypeface*>(face); 15859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com const LOGFONT* lf = reinterpret_cast<const LOGFONT*>(ctx); 159ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 16059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return getStyle(lface->fLogFont) == requestedStyle && 16159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com !memcmp(&lface->fLogFont, lf, sizeof(LOGFONT)); 16259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 16359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 16459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com/** 16559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * This guy is public. It first searches the cache, and if a match is not found, 16659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com * it creates a new face. 16759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com */ 16859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comSkTypeface* SkCreateTypefaceFromLOGFONT(const LOGFONT& origLF) { 16959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf = origLF; 17059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com make_canonical(&lf); 17159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypeface* face = SkTypefaceCache::FindByProc(FindByLogFont, &lf); 17259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 17359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face->ref(); 174ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 17559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com face = LogFontTypeface::Create(lf); 17659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com SkTypefaceCache::Add(face, getStyle(lf)); 17759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 17859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return face; 179ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 180ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 181ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comuint32_t SkFontHost::NextLogicalFont(uint32_t fontID) { 182ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Zero means that we don't have any fallback fonts for this fontID. 183ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This function is implemented on Android, but doesn't have much 184ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // meaning here. 185ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; 186ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 187ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 18859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic void GetLogFontByID(SkFontID fontID, LOGFONT* lf) { 18959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)SkTypefaceCache::FindByID(fontID); 19059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com if (face) { 19159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com *lf = face->fLogFont; 19259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else { 19359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com sk_bzero(lf, sizeof(LOGFONT)); 19459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } 19559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com} 19659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 1976744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Construct Glyph to Unicode table. 1986744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// Unicode code points that require conjugate pairs in utf16 are not 1996744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// supported. 2006744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// TODO(arthurhsu): Add support for conjugate pairs. It looks like that may 2016744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// require parsing the TTF cmap table (platform 4, encoding 12) directly instead 2026744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org// of calling GetFontUnicodeRange(). 2036744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.orgstatic void populate_glyph_to_unicode(HDC fontHdc, const unsigned glyphCount, 2046744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkTDArray<SkUnichar>* glyphToUnicode) { 2056744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org DWORD glyphSetBufferSize = GetFontUnicodeRanges(fontHdc, NULL); 2066744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (!glyphSetBufferSize) { 2076744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2086744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2096744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2106744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTDeleteArray<BYTE> glyphSetBuffer(new BYTE[glyphSetBufferSize]); 2116744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GLYPHSET* glyphSet = 2126744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org reinterpret_cast<LPGLYPHSET>(glyphSetBuffer.get()); 2136744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (GetFontUnicodeRanges(fontHdc, glyphSet) != glyphSetBufferSize) { 2146744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org return; 2156744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2166744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 2176744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org glyphToUnicode->setCount(glyphCount); 2186744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org memset(glyphToUnicode->begin(), 0, glyphCount * sizeof(SkUnichar)); 2196744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (DWORD i = 0; i < glyphSet->cRanges; ++i) { 2206744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // There is no guarantee that within a Unicode range, the corresponding 2216744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // glyph id in a font file are continuous. So, even if we have ranges, 2226744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // we can't just use the first and last entry of the range to compute 2236744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // result. We need to enumerate them one by one. 2246744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org int count = glyphSet->ranges[i].cGlyphs; 2256744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WCHAR> chars(count + 1); 2266744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[count] = 0; // termintate string 2276744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org SkAutoTArray<WORD> glyph(count); 2286744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2296744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org chars[j] = glyphSet->ranges[i].wcLow + j; 2306744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2316744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GetGlyphIndicesW(fontHdc, chars.get(), count, glyph.get(), 2326744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org GGI_MARK_NONEXISTING_GLYPHS); 2336744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // If the glyph ID is valid, and the glyph is not mapped, then we will 2346744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // fill in the char id into the vector. If the glyph is mapped already, 2356744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // skip it. 2366744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // TODO(arthurhsu): better improve this. e.g. Get all used char ids from 2376744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // font cache, then generate this mapping table from there. It's 2386744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // unlikely to have collisions since glyph reuse happens mostly for 2396744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org // different Unicode pages. 2406744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org for (USHORT j = 0; j < count; ++j) { 2416744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (glyph[j] != 0xffff && glyph[j] < glyphCount && 2426744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] == 0) { 2436744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org (*glyphToUnicode)[glyph[j]] = chars[j]; 2446744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2456744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2466744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 2476744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org} 2486744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 24959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com////////////////////////////////////////////////////////////////////////////////////////////// 25059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 251ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comclass SkScalerContext_Windows : public SkScalerContext { 252ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.compublic: 253ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalerContext_Windows(const SkDescriptor* desc); 254ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual ~SkScalerContext_Windows(); 255ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 256ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprotected: 257ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual unsigned generateGlyphCount(); 258ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual uint16_t generateCharToGlyph(SkUnichar uni); 259ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateAdvance(SkGlyph* glyph); 260ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateMetrics(SkGlyph* glyph); 261ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateImage(const SkGlyph& glyph); 262ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generatePath(const SkGlyph& glyph, SkPath* path); 263ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com virtual void generateFontMetrics(SkPaint::FontMetrics* mX, SkPaint::FontMetrics* mY); 264ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //virtual SkDeviceContext getDC() {return ddc;} 265ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comprivate: 266ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalar fScale; // to get from canonical size to real size 267ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com MAT2 fMat22; 268ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com XFORM fXform; 269ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC fDDC; 270ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fSavefont; 271ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT fFont; 272ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_CACHE fSC; 273ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int fGlyphCount; 274ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com}; 275ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 276ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic float mul2float(SkScalar a, SkScalar b) { 277ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkScalarToFloat(SkScalarMul(a, b)); 278ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 279ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 280ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic FIXED float2FIXED(float x) { 281ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkFixedToFIXED(SkFloatToFixed(x)); 282ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 283ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 28459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.comstatic SkMutex gFTMutex; 28559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com 286ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::SkScalerContext_Windows(const SkDescriptor* desc) 287ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com : SkScalerContext(desc), fDDC(0), fFont(0), fSavefont(0), fSC(0) 288ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com , fGlyphCount(-1) { 289ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 290ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 291ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fScale = fRec.fTextSize / gCanonicalTextSize; 292ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 293ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM11 = mul2float(fScale, fRec.fPost2x2[0][0]); 294ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM12 = mul2float(fScale, fRec.fPost2x2[1][0]); 295ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM21 = mul2float(fScale, fRec.fPost2x2[0][1]); 296ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eM22 = mul2float(fScale, fRec.fPost2x2[1][1]); 297ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eDx = 0; 298ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fXform.eDy = 0; 299ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 300ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM11 = float2FIXED(fXform.eM11); 301ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM12 = float2FIXED(fXform.eM12); 302ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM21 = float2FIXED(-fXform.eM21); 303ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fMat22.eM22 = float2FIXED(-fXform.eM22); 304ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 305ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC = ::CreateCompatibleDC(NULL); 306ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetBkMode(fDDC, TRANSPARENT); 307ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 308ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Scaling by the DPI is inconsistent with how Skia draws elsewhere 309ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //SkScalar height = -(fRec.fTextSize * GetDeviceCaps(ddc, LOGPIXELSY) / 72); 31059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 31159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fRec.fFontID, &lf); 312ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -gCanonicalTextSize; 313ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fFont = CreateFontIndirect(&lf); 314ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fSavefont = (HFONT)SelectObject(fDDC, fFont); 315ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 316ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 317ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext_Windows::~SkScalerContext_Windows() { 318ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fDDC) { 319ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::SelectObject(fDDC, fSavefont); 320ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteDC(fDDC); 321ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 322ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fFont) { 323ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::DeleteObject(fFont); 324ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 325ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fSC) { 326ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ::ScriptFreeCache(&fSC); 327ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 328ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 329ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 330ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comunsigned SkScalerContext_Windows::generateGlyphCount() { 331ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (fGlyphCount < 0) { 332ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fGlyphCount = calculateGlyphCount(fDDC); 333ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 334ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return fGlyphCount; 335ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 336ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 337ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comuint16_t SkScalerContext_Windows::generateCharToGlyph(SkUnichar uni) { 338ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t index = 0; 339ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WCHAR c[2]; 340ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Support characters that generate more than one glyph. 341ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkUTF16_FromUnichar(uni, (uint16_t*)c) == 1) { 342ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Type1 fonts fail with uniscribe API. Use GetGlyphIndices for plane 0. 343ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(GetGlyphIndicesW(fDDC, c, 1, &index, 0)); 344ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 345ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Use uniscribe to detemine glyph index for non-BMP characters. 346ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Need to add extra item to SCRIPT_ITEM to work around a bug in older 347ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // windows versions. https://bugzilla.mozilla.org/show_bug.cgi?id=366643 348ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_ITEM si[2 + 1]; 349ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int items; 350ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult( 351ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SUCCEEDED(ScriptItemize(c, 2, 2, NULL, NULL, si, &items))); 352ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 353ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WORD log[2]; 354ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SCRIPT_VISATTR vsa; 355ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int glyphs; 356ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAssertResult(SUCCEEDED(ScriptShape( 357ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com fDDC, &fSC, c, 2, 1, &si[0].a, &index, log, &vsa, &glyphs))); 358ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 359ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return index; 360ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 361ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 362ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateAdvance(SkGlyph* glyph) { 363ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com this->generateMetrics(glyph); 364ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 365ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 366ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateMetrics(SkGlyph* glyph) { 367ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 368ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 369ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 370ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 371ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com memset(&gm, 0, sizeof(gm)); 372ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 373ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fRsbDelta = 0; 374ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLsbDelta = 0; 375ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 376ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Note: need to use GGO_GRAY8_BITMAP instead of GGO_METRICS because GGO_METRICS returns a smaller 377ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // BlackBlox; we need the bigger one in case we need the image. fAdvance is the same. 378ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetGlyphOutlineW(fDDC, glyph->getGlyphID(0), GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 379ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 380ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != ret) { 381ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (ret == 0) { 382ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // for white space, ret is zero and gmBlackBoxX, gmBlackBoxY are 1 incorrectly! 383ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com gm.gmBlackBoxX = gm.gmBlackBoxY = 0; 384ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 385ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = gm.gmBlackBoxX; 386ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fHeight = gm.gmBlackBoxY; 387ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fTop = SkToS16(gm.gmptGlyphOrigin.y - gm.gmBlackBoxY); 388ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLeft = SkToS16(gm.gmptGlyphOrigin.x); 389ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceX = SkIntToFixed(gm.gmCellIncX); 390ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fAdvanceY = -SkIntToFixed(gm.gmCellIncY); 391ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 392ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // we outset by 1 in all dimensions, since the lcd image may bleed outside 393ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // of the computed bounds returned by GetGlyphOutline. 394ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This was deduced by trial and error for small text (e.g. 8pt), so there 395ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // maybe a more precise way to make this adjustment... 396ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkMask::kLCD16_Format == fRec.fMaskFormat) { 397ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth += 2; 398ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fHeight += 2; 399ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fTop -= 1; 400ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fLeft -= 1; 401ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 402ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 403ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com glyph->fWidth = 0; 404ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 405ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 406ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 407ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateFontMetrics(SkPaint::FontMetrics* mx, SkPaint::FontMetrics* my) { 408ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// Note: This code was borrowed from generateLineHeight, which has a note 409ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// stating that it may be incorrect. 410ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(mx || my)) 411ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 412ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 413ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 414ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 415ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 416ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 417ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t ret = GetOutlineTextMetrics(fDDC, sizeof(otm), &otm); 418ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (sizeof(otm) != ret) { 419ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 420ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 421ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 422ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (mx) { 423ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fTop = -fScale * otm.otmTextMetrics.tmAscent; 424ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fAscent = -fScale * otm.otmAscent; 425ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fDescent = -fScale * otm.otmDescent; 426ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fBottom = fScale * otm.otmTextMetrics.tmDescent; 427ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com mx->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 428ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com + otm.otmTextMetrics.tmExternalLeading); 429ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 430ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 431ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (my) { 432ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fTop = -fScale * otm.otmTextMetrics.tmAscent; 433ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fAscent = -fScale * otm.otmAscent; 434ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fDescent = -fScale * otm.otmDescent; 435ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fBottom = fScale * otm.otmTextMetrics.tmDescent; 436ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com my->fLeading = fScale * (otm.otmTextMetrics.tmInternalLeading 437ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com + otm.otmTextMetrics.tmExternalLeading); 438ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 439ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 440ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 441ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#include "SkColorPriv.h" 442ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 443ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic inline uint16_t rgb_to_lcd16(uint32_t rgb) { 444ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int r = (rgb >> 16) & 0xFF; 445ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int g = (rgb >> 8) & 0xFF; 446ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int b = (rgb >> 0) & 0xFF; 447ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 448ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // invert, since we draw black-on-white, but we want the original 449ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // src mask values. 450ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com r = 255 - r; 451ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com g = 255 - g; 452ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com b = 255 - b; 453ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkPackRGB16(SkR32ToR16(r), SkG32ToG16(g), SkB32ToB16(b)); 454ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 455ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 456ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generateImage(const SkGlyph& glyph) { 457ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 458ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 459ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 460ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 461ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 462ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkMask::kLCD16_Format == fRec.fMaskFormat) { 463ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC dc = CreateCompatibleDC(0); 464ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com void* bits = 0; 465ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com BITMAPINFO info; 466ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com sk_bzero(&info, sizeof(info)); 467ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info.bmiHeader.biSize = sizeof(info.bmiHeader); 468ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info.bmiHeader.biWidth = glyph.fWidth; 469ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info.bmiHeader.biHeight = glyph.fHeight; 470ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info.bmiHeader.biPlanes = 1; 471ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info.bmiHeader.biBitCount = 32; 472ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info.bmiHeader.biCompression = BI_RGB; 473ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HBITMAP bm = CreateDIBSection(dc, &info, DIB_RGB_COLORS, &bits, 0, 0); 474ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(dc, bm); 475ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 476ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // erase to white 477ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t srcRB = glyph.fWidth << 2; 478ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t size = glyph.fHeight * srcRB; 479ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com memset(bits, 0xFF, size); 480ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 481ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetBkMode(dc, TRANSPARENT); 482ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetTextAlign(dc, TA_LEFT | TA_BASELINE); 483ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetGraphicsMode(dc, GM_ADVANCED); 484ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 485ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com XFORM xform = fXform; 486ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com xform.eDx = (float)-glyph.fLeft; 487ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com xform.eDy = (float)-glyph.fTop; 488ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SetWorldTransform(dc, &xform); 489ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 490ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HGDIOBJ prevFont = SelectObject(dc, fFont); 491ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com COLORREF color = SetTextColor(dc, 0); // black 492ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(color != CLR_INVALID); 493ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t glyphID = glyph.getGlyphID(); 494c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com#if defined(UNICODE) 495ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCWSTR)&glyphID, 1, NULL); 496c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com#else 497c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com ExtTextOut(dc, 0, 0, ETO_GLYPH_INDEX, NULL, (LPCSTR)&glyphID, 1, NULL); 498c8ad63e5e42637c65c6b4e0adfacce55730b722dbsalomon@google.com#endif 499ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GdiFlush(); 500ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 501ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // downsample from rgba to rgb565 502ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int width = glyph.fWidth; 503ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t dstRB = glyph.rowBytes(); 504ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint32_t* src = (const uint32_t*)bits; 505ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // gdi's bitmap is upside-down, so we reverse dst walking in Y 506ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint16_t* dst = (uint16_t*)((char*)glyph.fImage + (glyph.fHeight - 1) * dstRB); 507ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (int y = 0; y < glyph.fHeight; y++) { 508ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (int i = 0; i < width; i++) { 509ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com dst[i] = rgb_to_lcd16(src[i]); 510ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 511ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com src = (const uint32_t*)((const char*)src + srcRB); 512ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com dst = (uint16_t*)((char*)dst - dstRB); 513ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 514ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 515ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(dc); 516ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(bm); 517ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 518ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 519ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 520ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 521ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com memset(&gm, 0, sizeof(gm)); 522ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t bytecount = 0; 523ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, 0, NULL, &fMat22); 524ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != total_size && total_size > 0) { 525ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint8_t *pBuff = new uint8_t[total_size]; 526ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (NULL != pBuff) { 527ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_GRAY8_BITMAP | GGO_GLYPH_INDEX, &gm, total_size, pBuff, &fMat22); 528ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 529ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(total_size != GDI_ERROR); 530ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 531ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(glyph.fWidth == gm.gmBlackBoxX); 532ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(glyph.fHeight == gm.gmBlackBoxY); 533ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 534ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint8_t* dst = (uint8_t*)glyph.fImage; 535ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t pitch = (gm.gmBlackBoxX + 3) & ~0x3; 536ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pitch != glyph.rowBytes()) { 537ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); // glyph.fImage has different rowsize!? 538ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 539ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 540ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (int32_t y = gm.gmBlackBoxY - 1; y >= 0; y--) { 541ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint8_t* src = pBuff + pitch * y; 542ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 543ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint32_t x = 0; x < gm.gmBlackBoxX; x++) { 544ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (*src > 63) { 545ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com *dst = 0xFF; 546ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 547ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else { 548ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com *dst = *src << 2; // scale to 0-255 549ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 550ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com dst++; 551ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com src++; 552ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com bytecount++; 553ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 554ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com memset(dst, 0, glyph.rowBytes() - glyph.fWidth); 555ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com dst += glyph.rowBytes() - glyph.fWidth; 556ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 557ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 558ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com delete[] pBuff; 559ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 560ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 561ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 562ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(GDI_ERROR != total_size && total_size >= 0); 563ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 564ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 565ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 566ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkScalerContext_Windows::generatePath(const SkGlyph& glyph, SkPath* path) { 567ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 568ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAutoMutexAcquire ac(gFTMutex); 569ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 570ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(&glyph && path); 571ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(fDDC); 572ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 573ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->reset(); 574ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 575ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#if 0 576ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char buf[1024]; 577ac6b97972d3c5a8e10b79c1409818756310e0f12reed@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); 578ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OutputDebugString(buf); 579ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 580ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 581ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 582ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com uint32_t total_size = GetGlyphOutlineW(fDDC, glyph.fID, GGO_NATIVE | GGO_GLYPH_INDEX, &gm, BUFFERSIZE, glyphbuf, &fMat22); 583ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 584ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR != total_size) { 585ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 586ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_glyph = glyphbuf; 587ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_glyph = glyphbuf + total_size; 588ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 589ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_glyph < end_glyph) { 590ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYGONHEADER* th = (TTPOLYGONHEADER*)cur_glyph; 591ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 592ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* end_poly = cur_glyph + th->cb; 593ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const uint8_t* cur_poly = cur_glyph + sizeof(TTPOLYGONHEADER); 594ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 595ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->moveTo(SkFixedToScalar(*(SkFixed*)(&th->pfxStart.x)), SkFixedToScalar(*(SkFixed*)(&th->pfxStart.y))); 596ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 597ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com while(cur_poly < end_poly) { 598ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const TTPOLYCURVE* pc = (const TTPOLYCURVE*)cur_poly; 599ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 600ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_LINE) { 601ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t i = 0; i < pc->cpfx; i++) { 602ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->lineTo(SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].x)), SkFixedToScalar(*(SkFixed*)(&pc->apfx[i].y))); 603ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 604ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 605ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 606ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (pc->wType == TT_PRIM_QSPLINE) { 607ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (uint16_t u = 0; u < pc->cpfx - 1; u++) { // Walk through points in spline 608ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_b = pc->apfx[u]; // B is always the current point 609ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com POINTFX pnt_c = pc->apfx[u+1]; 610ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 611ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (u < pc->cpfx - 2) { // If not on last spline, compute C 612ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.x = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.x), *(SkFixed*)(&pnt_c.x))); 613ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com pnt_c.y = SkFixedToFIXED(SkFixedAve(*(SkFixed*)(&pnt_b.y), *(SkFixed*)(&pnt_c.y))); 614ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 615ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 616ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->quadTo(SkFixedToScalar(*(SkFixed*)(&pnt_b.x)), SkFixedToScalar(*(SkFixed*)(&pnt_b.y)), SkFixedToScalar(*(SkFixed*)(&pnt_c.x)), SkFixedToScalar(*(SkFixed*)(&pnt_c.y))); 617ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 618ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 619ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_poly += sizeof(uint16_t) * 2 + sizeof(POINTFX) * pc->cpfx; 620ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 621ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com cur_glyph += th->cb; 622ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com path->close(); 623ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 624ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 625ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else { 626ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 627ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 628ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //char buf[1024]; 629ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //sprintf(buf, "generatePath: count:%d\n", count); 630ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //OutputDebugString(buf); 631ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 632ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 633ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::Serialize(const SkTypeface* face, SkWStream* stream) { 634ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(!"SkFontHost::Serialize unimplemented"); 635ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 636ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 637ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::Deserialize(SkStream* stream) { 638ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(!"SkFontHost::Deserialize unimplemented"); 639ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 640ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 641ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 642ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comstatic bool getWidthAdvance(HDC hdc, int gId, int16_t* advance) { 643ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Initialize the MAT2 structure to the identify transformation matrix. 644ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com static const MAT2 mat2 = {SkScalarToFIXED(1), SkScalarToFIXED(0), 645ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkScalarToFIXED(0), SkScalarToFIXED(1)}; 646ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int flags = GGO_METRICS | GGO_GLYPH_INDEX; 647ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com GLYPHMETRICS gm; 648ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GDI_ERROR == GetGlyphOutline(hdc, gId, flags, &gm, 0, NULL, &mat2)) { 649ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return false; 650ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 651ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(advance); 652ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com *advance = gm.gmCellIncX; 653ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return true; 654ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 655ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 656ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com// static 657ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkAdvancedTypefaceMetrics* SkFontHost::GetAdvancedTypefaceMetrics( 658325cb9aa17b94258b362082eb3a799524f4345f3vandebo@chromium.org uint32_t fontID, 659325cb9aa17b94258b362082eb3a799524f4345f3vandebo@chromium.org SkAdvancedTypefaceMetrics::PerGlyphInfo perGlyphInfo) { 66059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 66159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(fontID, &lf); 662ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkAdvancedTypefaceMetrics* info = NULL; 663ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 664ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = CreateCompatibleDC(NULL); 665ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT font = CreateFontIndirect(&lf); 666ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 667ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT designFont = NULL; 668ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 669ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // To request design units, create a logical font whose height is specified 670ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // as unitsPerEm. 671ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com OUTLINETEXTMETRIC otm; 672ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetOutlineTextMetrics(hdc, sizeof(otm), &otm) || 673ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com !GetTextFace(hdc, LF_FACESIZE, lf.lfFaceName)) { 674ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 675ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 676ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com lf.lfHeight = -SkToS32(otm.otmEMSquare); 677ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com designFont = CreateFontIndirect(&lf); 678ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, designFont); 679ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetOutlineTextMetrics(hdc, sizeof(otm), &otm)) { 680ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com goto Error; 681ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 682ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const unsigned glyphCount = calculateGlyphCount(hdc); 683ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 684ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info = new SkAdvancedTypefaceMetrics; 685ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fEmSize = otm.otmEMSquare; 686ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fMultiMaster = false; 687ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fLastGlyphID = SkToU16(glyphCount - 1); 688ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle = 0; 689ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 690ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Get the buffer size needed first. 691ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t str_len = WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, NULL, 692ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 0, NULL, NULL); 693ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Allocate a buffer (str_len already has terminating null accounted for). 694ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char *familyName = new char[str_len]; 695ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Now actually convert the string. 696ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com WideCharToMultiByte(CP_UTF8, 0, lf.lfFaceName, -1, familyName, str_len, 697ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com NULL, NULL); 698ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(familyName); 699ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com delete [] familyName; 700ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 701ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fFontName.set(lf.lfFaceName); 702ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 703ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 7046744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org if (perGlyphInfo & SkAdvancedTypefaceMetrics::kToUnicode_PerGlyphInfo) { 7056744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org populate_glyph_to_unicode(hdc, glyphCount, &(info->fGlyphToUnicode)); 7066744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org } 7076744d498fcbbbcf503ec80c4d43dd8f118a88597vandebo@chromium.org 708ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & TMPF_TRUETYPE) { 709ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kTrueType_Font; 710ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 711ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kOther_Font; 712ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = 0; 713ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = 0; 714ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = 0; 715ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 716ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = 0; 717ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = SkIRect::MakeEmpty(); 718ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 719ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 720ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 721ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If this bit is clear the font is a fixed pitch font. 722ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!(otm.otmTextMetrics.tmPitchAndFamily & TMPF_FIXED_PITCH)) { 723ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kFixedPitch_Style; 724ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 725ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmItalic) { 726ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kItalic_Style; 727ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 728ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Setting symbolic style by default for now. 729ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSymbolic_Style; 730ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmTextMetrics.tmPitchAndFamily & FF_ROMAN) { 731ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kSerif_Style; 732ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else if (otm.otmTextMetrics.tmPitchAndFamily & FF_SCRIPT) { 733ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStyle |= SkAdvancedTypefaceMetrics::kScript_Style; 734ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 735ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 736ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // The main italic angle of the font, in tenths of a degree counterclockwise 737ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // from vertical. 738ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fItalicAngle = otm.otmItalicAngle / 10; 739ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fAscent = SkToS16(otm.otmTextMetrics.tmAscent); 740ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fDescent = SkToS16(-otm.otmTextMetrics.tmDescent); 741ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // TODO(ctguil): Use alternate cap height calculation. 742ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // MSDN says otmsCapEmHeight is not support but it is returning a value on 743ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // my Win7 box. 744ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fCapHeight = otm.otmsCapEmHeight; 745ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fBBox = 746ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkIRect::MakeLTRB(otm.otmrcFontBox.left, otm.otmrcFontBox.top, 747ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com otm.otmrcFontBox.right, otm.otmrcFontBox.bottom); 748ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 749ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // Figure out a good guess for StemV - Min width of i, I, !, 1. 750ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // This probably isn't very good with an italic font. 751ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int16_t min_width = SHRT_MAX; 752ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = 0; 753ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com char stem_chars[] = {'i', 'I', '!', '1'}; 754ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com for (size_t i = 0; i < SK_ARRAY_COUNT(stem_chars); i++) { 755ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com ABC abcWidths; 756ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (GetCharABCWidths(hdc, stem_chars[i], stem_chars[i], &abcWidths)) { 757ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com int16_t width = abcWidths.abcB; 758ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (width > 0 && width < min_width) { 759ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com min_width = width; 760ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fStemV = min_width; 761ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 762ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 763ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 764ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 765ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is set, the font may not be embedded in a document. 766ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 1 is clear, the font can be embedded. 767ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // If bit 2 is set, the embedding is read-only. 768ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (otm.otmfsType & 0x1) { 769ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fType = SkAdvancedTypefaceMetrics::kNotEmbeddable_Font; 7700e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org } else if (perGlyphInfo & 7710e6dc0a320985ffd31f77eed8a41e62132b9ba95ctguil@chromium.org SkAdvancedTypefaceMetrics::kHAdvance_PerGlyphInfo) { 772ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com info->fGlyphWidths.reset( 773ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com getAdvanceData(hdc, glyphCount, &getWidthAdvance)); 774ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 775ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 776ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comError: 777ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 778ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(designFont); 779ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 780ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 781ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 782ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return info; 783ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 784ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 785ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromStream(SkStream* stream) { 786ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 787ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com //Should not be used on Windows, keep linker happy 788ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkASSERT(false); 789ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkCreateTypefaceFromLOGFONT(get_default_font()); 790ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 791ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 792ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkStream* SkFontHost::OpenStream(SkFontID uniqueID) { 79359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 79459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com GetLogFontByID(uniqueID, &lf); 795ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 796ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HDC hdc = ::CreateCompatibleDC(NULL); 79759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com HFONT font = CreateFontIndirect(&lf); 798ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com HFONT savefont = (HFONT)SelectObject(hdc, font); 799ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 800ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com size_t bufferSize = GetFontData(hdc, 0, 0, NULL, 0); 801ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkMemoryStream* stream = new SkMemoryStream(bufferSize); 802ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (!GetFontData(hdc, 0, 0, (void*)stream->getMemoryBase(), bufferSize)) { 803ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com delete stream; 804ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com stream = NULL; 805ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 806ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 807ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SelectObject(hdc, savefont); 808ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteObject(font); 809ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com DeleteDC(hdc); 810ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 811ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return stream; 812ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 813ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 814ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkScalerContext* SkFontHost::CreateScalerContext(const SkDescriptor* desc) { 815ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return SkNEW_ARGS(SkScalerContext_Windows, (desc)); 816ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 817ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 818ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com/** Return the closest matching typeface given either an existing family 819ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com (specified by a typeface in that family) or by a familyName, and a 820ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com requested style. 821ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 1) If familyFace is null, use famillyName. 822ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 2) If famillyName is null, use familyFace. 823ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 3) If both are null, return the default font that best matches style 824ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com This MUST not return NULL. 825ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com */ 826ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 827ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypeface(const SkTypeface* familyFace, 828ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const char familyName[], 829ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com const void* data, size_t bytelength, 830ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com SkTypeface::Style style) { 83159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LOGFONT lf; 832ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (NULL == familyFace && NULL == familyName) { 83359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = get_default_font(); 83459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com } else if (familyFace) { 83559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com LogFontTypeface* face = (LogFontTypeface*)familyFace; 83659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf = face->fLogFont; 837ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } else { 83859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com memset(&lf, 0, sizeof(LOGFONT)); 839ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#ifdef UNICODE 84059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Get the buffer size needed first. 84159d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com size_t str_len = ::MultiByteToWideChar(CP_UTF8, 0, familyName, 84259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com -1, NULL, 0); 84359d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Allocate a buffer (str_len already has terminating null 84459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // accounted for). 84559d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wchar_t *wideFamilyName = new wchar_t[str_len]; 84659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com // Now actually convert the string. 84759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::MultiByteToWideChar(CP_UTF8, 0, familyName, -1, 84859d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com wideFamilyName, str_len); 84959d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::wcsncpy(lf.lfFaceName, wideFamilyName, LF_FACESIZE); 85059d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com delete [] wideFamilyName; 851ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#else 85259d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com ::strncpy(lf.lfFaceName, familyName, LF_FACESIZE); 853ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif 85459d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com lf.lfFaceName[LF_FACESIZE-1] = '\0'; 855ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 85659d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com setStyle(&lf, style); 85759d2f63583512b47df579e80f1ae39c74fad5f3ereed@google.com return SkCreateTypefaceFromLOGFONT(lf); 858ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 859ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 860ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comsize_t SkFontHost::ShouldPurgeFontCache(size_t sizeAllocatedSoFar) { 861ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (sizeAllocatedSoFar > FONT_CACHE_MEMORY_BUDGET) 862ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return sizeAllocatedSoFar - FONT_CACHE_MEMORY_BUDGET; 863ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com else 864ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; // nothing to do 865ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 866ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 867ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comint SkFontHost::ComputeGammaFlag(const SkPaint& paint) { 868ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return 0; 869ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 870ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 871ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::GetGammaTables(const uint8_t* tables[2]) { 872ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com tables[0] = NULL; // black gamma (e.g. exp=1.4) 873ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com tables[1] = NULL; // white gamma (e.g. exp= 1/1.4) 874ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 875ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 876ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comSkTypeface* SkFontHost::CreateTypefaceFromFile(const char path[]) { 877ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com printf("SkFontHost::CreateTypefaceFromFile unimplemented"); 878ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return NULL; 879ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 880ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 881ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.comvoid SkFontHost::FilterRec(SkScalerContext::Rec* rec) { 882ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // We don't control the hinting nor ClearType settings here 883ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com rec->setHinting(SkPaint::kNormal_Hinting); 884ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 885ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com // we do support LCD16 886ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkMask::kLCD16_Format == rec->fMaskFormat) { 887ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com return; 888ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 889d9fec6114fcda741390f9234b7ca72cb75e065dereed@google.com // we never like BW format 890d9fec6114fcda741390f9234b7ca72cb75e065dereed@google.com if (SkMask::kBW_Format == rec->fMaskFormat) { 891d9fec6114fcda741390f9234b7ca72cb75e065dereed@google.com rec->fMaskFormat = SkMask::kA8_Format; 892d9fec6114fcda741390f9234b7ca72cb75e065dereed@google.com } 893ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 894ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com if (SkMask::FormatIsLCD((SkMask::Format)rec->fMaskFormat)) { 895ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com rec->fMaskFormat = SkMask::kA8_Format; 896ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com } 897ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com} 898ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com 899ac6b97972d3c5a8e10b79c1409818756310e0f12reed@google.com#endif // WIN32 900