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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ScaledFontWin.h"
#include "UnscaledFontGDI.h"
#include "AutoHelpersWin.h"
#include "Logging.h"
#include "nsString.h"
#include "skia/include/ports/SkTypeface_win.h"
#include "cairo-win32.h"
#include "HelpersWinFonts.h"
namespace mozilla {
namespace gfx {
ScaledFontWin::ScaledFontWin(const LOGFONT* aFont,
const RefPtr<UnscaledFont>& aUnscaledFont,
Float aSize)
: ScaledFontBase(aUnscaledFont, aSize), mLogFont(*aFont) {}
bool UnscaledFontGDI::GetFontFileData(FontFileDataOutput aDataCallback,
void* aBaton) {
AutoDC dc;
AutoSelectFont font(dc.GetDC(), &mLogFont);
// Check for a font collection first.
uint32_t table = 0x66637474; // 'ttcf'
uint32_t tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
if (tableSize == GDI_ERROR) {
// Try as if just a single font.
table = 0;
tableSize = ::GetFontData(dc.GetDC(), table, 0, nullptr, 0);
if (tableSize == GDI_ERROR) {
return false;
}
}
UniquePtr<uint8_t[]> fontData(new uint8_t[tableSize]);
uint32_t sizeGot =
::GetFontData(dc.GetDC(), table, 0, fontData.get(), tableSize);
if (sizeGot != tableSize) {
return false;
}
aDataCallback(fontData.get(), tableSize, 0, aBaton);
return true;
}
bool ScaledFontWin::GetFontInstanceData(FontInstanceDataOutput aCb,
void* aBaton) {
aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), nullptr, 0,
aBaton);
return true;
}
bool UnscaledFontGDI::GetFontInstanceData(FontInstanceDataOutput aCb,
void* aBaton) {
aCb(reinterpret_cast<uint8_t*>(&mLogFont), sizeof(mLogFont), aBaton);
return true;
}
bool UnscaledFontGDI::GetFontDescriptor(FontDescriptorOutput aCb,
void* aBaton) {
// Because all the callers of this function are preparing a recorded
// event to be played back in another process, it's not helpful to ever
// return a font descriptor, since it isn't meaningful in another
// process. Those callers will always need to send full font data, and
// returning false here will ensure that that happens.
return false;
}
already_AddRefed<UnscaledFont> UnscaledFontGDI::CreateFromFontDescriptor(
const uint8_t* aData, uint32_t aDataLength, uint32_t aIndex) {
if (aDataLength < sizeof(LOGFONT)) {
gfxWarning() << "GDI font descriptor is truncated.";
return nullptr;
}
const LOGFONT* logFont = reinterpret_cast<const LOGFONT*>(aData);
RefPtr<UnscaledFont> unscaledFont = new UnscaledFontGDI(*logFont);
return unscaledFont.forget();
}
already_AddRefed<ScaledFont> UnscaledFontGDI::CreateScaledFont(
Float aGlyphSize, const uint8_t* aInstanceData,
uint32_t aInstanceDataLength, const FontVariation* aVariations,
uint32_t aNumVariations) {
if (aInstanceDataLength < sizeof(LOGFONT)) {
gfxWarning() << "GDI unscaled font instance data is truncated.";
return nullptr;
}
return MakeAndAddRef<ScaledFontWin>(
reinterpret_cast<const LOGFONT*>(aInstanceData), this, aGlyphSize);
}
AntialiasMode ScaledFontWin::GetDefaultAAMode() {
return GetSystemDefaultAAMode();
}
SkTypeface* ScaledFontWin::CreateSkTypeface() {
return SkCreateTypefaceFromLOGFONT(mLogFont);
}
cairo_font_face_t* ScaledFontWin::CreateCairoFontFace(
cairo_font_options_t* aFontOptions) {
if (mLogFont.lfFaceName[0] == 0) {
return nullptr;
}
return cairo_win32_font_face_create_for_logfontw(&mLogFont);
}
} // namespace gfx
} // namespace mozilla
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