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2b03a82ba0
This removes a lot of old cruft in thebes to instantiate Cairo scaled fonts. Instead, we only instantiate the Cairo scaled font inside Moz2D when we actually need it for DrawTargetCairo. This thus gets rid of the duplicated code we had inside both Moz2D and thebes to deal with Cairo scaled fonts. Differential Revision: https://phabricator.services.mozilla.com/D47297 --HG-- extra : moz-landing-system : lando
126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "UnscaledFontGDI.h"
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#include "AutoHelpersWin.h"
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#include "Logging.h"
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#include "nsString.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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#include "HelpersWinFonts.h"
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namespace mozilla {
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namespace gfx {
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ScaledFontWin::ScaledFontWin(const LOGFONT* aFont,
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const RefPtr<UnscaledFont>& aUnscaledFont,
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Float aSize)
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: ScaledFontBase(aUnscaledFont, aSize), mLogFont(*aFont) {}
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bool UnscaledFontGDI::GetFontFileData(FontFileDataOutput aDataCallback,
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void* aBaton) {
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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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aDataCallback(fontData.get(), tableSize, 0, aBaton);
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return true;
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}
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bool ScaledFontWin::GetFontInstanceData(FontInstanceDataOutput aCb,
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void* aBaton) {
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aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), nullptr, 0,
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aBaton);
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return true;
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}
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bool UnscaledFontGDI::GetFontInstanceData(FontInstanceDataOutput aCb,
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void* aBaton) {
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aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), aBaton);
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return true;
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}
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bool UnscaledFontGDI::GetFontDescriptor(FontDescriptorOutput aCb,
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void* aBaton) {
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aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), 0, aBaton);
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return true;
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}
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already_AddRefed<UnscaledFont> UnscaledFontGDI::CreateFromFontDescriptor(
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const uint8_t* aData, uint32_t aDataLength, uint32_t aIndex) {
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if (aDataLength < sizeof(LOGFONT)) {
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gfxWarning() << "GDI font descriptor is truncated.";
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return nullptr;
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}
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const LOGFONT* logFont = reinterpret_cast<const LOGFONT*>(aData);
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RefPtr<UnscaledFont> unscaledFont = new UnscaledFontGDI(*logFont);
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return unscaledFont.forget();
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}
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already_AddRefed<ScaledFont> UnscaledFontGDI::CreateScaledFont(
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Float aGlyphSize, const uint8_t* aInstanceData,
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uint32_t aInstanceDataLength, const FontVariation* aVariations,
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uint32_t aNumVariations) {
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if (aInstanceDataLength < sizeof(LOGFONT)) {
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gfxWarning() << "GDI unscaled font instance data is truncated.";
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return nullptr;
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}
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return MakeAndAddRef<ScaledFontWin>(
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reinterpret_cast<const LOGFONT*>(aInstanceData), this, aGlyphSize);
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}
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AntialiasMode ScaledFontWin::GetDefaultAAMode() {
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return GetSystemDefaultAAMode();
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}
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#ifdef USE_SKIA
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SkTypeface* ScaledFontWin::CreateSkTypeface() {
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return SkCreateTypefaceFromLOGFONT(mLogFont);
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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* ScaledFontWin::CreateCairoFontFace(
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cairo_font_options_t* aFontOptions) {
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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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} // namespace gfx
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} // namespace mozilla
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