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110 lines
2.8 KiB
C++
110 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ScaledFontWin.h"
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#include "AutoHelpersWin.h"
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#include "Logging.h"
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#include "SFNTData.h"
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#ifdef USE_SKIA
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#include "skia/include/ports/SkTypeface_win.h"
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#endif
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#ifdef USE_CAIRO_SCALED_FONT
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#include "cairo-win32.h"
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#endif
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namespace mozilla {
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namespace gfx {
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ScaledFontWin::ScaledFontWin(LOGFONT* aFont, Float aSize)
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: ScaledFontBase(aSize)
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, mLogFont(*aFont)
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{
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}
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bool
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ScaledFontWin::GetFontFileData(FontFileDataOutput aDataCallback, void *aBaton)
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{
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AutoDC dc;
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AutoSelectFont font(dc.GetDC(), &mLogFont);
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// Check for a font collection first.
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uint32_t table = 0x66637474; // 'ttcf'
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uint32_t tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
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if (tableSize == GDI_ERROR) {
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// Try as if just a single font.
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table = 0;
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tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
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if (tableSize == GDI_ERROR) {
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return false;
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}
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}
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UniquePtr<uint8_t[]> fontData(new uint8_t[tableSize]);
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uint32_t sizeGot =
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::GetFontData(dc.GetDC(), table, 0, fontData.get(), tableSize);
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if (sizeGot != tableSize) {
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return false;
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}
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// If it's a font collection then attempt to get the index.
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uint32_t index = 0;
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if (table != 0) {
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UniquePtr<SFNTData> sfntData = SFNTData::Create(fontData.get(),
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tableSize);
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if (!sfntData) {
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gfxWarning() << "Failed to create SFNTData for GetFontFileData.";
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return false;
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}
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// We cast here because for VS2015 char16_t != wchar_t, even though they are
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// both 16 bit.
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if (!sfntData->GetIndexForU16Name(
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reinterpret_cast<char16_t*>(mLogFont.lfFaceName), &index, LF_FACESIZE - 1)) {
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gfxWarning() << "Failed to get index for face name.";
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gfxDevCrash(LogReason::GetFontFileDataFailed) <<
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"Failed to get index for face name |" << mLogFont.lfFaceName << "|.";
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return false;
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}
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}
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aDataCallback(fontData.get(), tableSize, index, mSize, aBaton);
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return true;
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}
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bool
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ScaledFontWin::GetFontDescriptor(FontDescriptorOutput aCb, void* aBaton)
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{
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aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), mSize, aBaton);
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return true;
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}
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#ifdef USE_SKIA
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SkTypeface* ScaledFontWin::GetSkTypeface()
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{
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if (!mTypeface) {
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mTypeface = SkCreateTypefaceFromLOGFONT(mLogFont);
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}
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return mTypeface;
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}
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#endif
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#ifdef USE_CAIRO_SCALED_FONT
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cairo_font_face_t*
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ScaledFontWin::GetCairoFontFace()
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{
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if (mLogFont.lfFaceName[0] == 0) {
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return nullptr;
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}
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return cairo_win32_font_face_create_for_logfontw(&mLogFont);
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}
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#endif
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}
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}
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