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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "NativeFontResourceGDI.h"
#include "Logging.h"
#include "mozilla/RefPtr.h"
#include "ScaledFontWin.h"
namespace mozilla {
namespace gfx {
/* static */
already_AddRefed<NativeFontResourceGDI>
NativeFontResourceGDI::Create(uint8_t *aFontData, uint32_t aDataLength,
bool aNeedsCairo)
{
DWORD numberOfFontsAdded;
HANDLE fontResourceHandle = ::AddFontMemResourceEx(aFontData, aDataLength,
0, &numberOfFontsAdded);
if (!fontResourceHandle) {
gfxWarning() << "Failed to add memory font resource.";
return nullptr;
}
RefPtr<NativeFontResourceGDI> fontResouce =
new NativeFontResourceGDI(fontResourceHandle, aNeedsCairo);
return fontResouce.forget();
}
NativeFontResourceGDI::~NativeFontResourceGDI()
{
::RemoveFontMemResourceEx(mFontResourceHandle);
}
already_AddRefed<ScaledFont>
NativeFontResourceGDI::CreateScaledFont(uint32_t aIndex, Float aGlyphSize,
const uint8_t* aInstanceData, uint32_t aInstanceDataLength)
{
if (aInstanceDataLength < sizeof(LOGFONT)) {
gfxWarning() << "GDI scaled font instance data is truncated.";
return nullptr;
}
const LOGFONT* logFont = reinterpret_cast<const LOGFONT*>(aInstanceData);
// Constructor for ScaledFontWin dereferences and copies the LOGFONT, so we
// are safe to pass this reference.
RefPtr<ScaledFontBase> scaledFont = new ScaledFontWin(logFont, aGlyphSize);
if (mNeedsCairo && !scaledFont->PopulateCairoScaledFont()) {
gfxWarning() << "Unable to create cairo scaled font GDI font.";
return nullptr;
}
return scaledFont.forget();
}
} // gfx
} // mozilla
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