gecko-dev/gfx/thebes/gfxDWriteFonts.h

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2012-05-21 11:12:37 +00:00
* 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/. */
#ifndef GFX_WINDOWSDWRITEFONTS_H
#define GFX_WINDOWSDWRITEFONTS_H
#include "mozilla/MemoryReporting.h"
#include "mozilla/UniquePtr.h"
#include <dwrite_1.h>
#include "gfxFont.h"
#include "gfxUserFontSet.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/gfx/UnscaledFontDWrite.h"
/**
* \brief Class representing a font face for a font entry.
*/
class gfxDWriteFont final : public gfxFont {
public:
gfxDWriteFont(const RefPtr<mozilla::gfx::UnscaledFontDWrite>& aUnscaledFont,
gfxFontEntry* aFontEntry, const gfxFontStyle* aFontStyle,
RefPtr<IDWriteFontFace> aFontFace = nullptr,
AntialiasOption = kAntialiasDefault);
~gfxDWriteFont();
static void UpdateSystemTextQuality();
static void SystemTextQualityChanged();
mozilla::UniquePtr<gfxFont> CopyWithAntialiasOption(
AntialiasOption anAAOption) override;
bool AllowSubpixelAA() override { return mAllowManualShowGlyphs; }
bool IsValid() const;
IDWriteFontFace* GetFontFace();
/* override Measure to add padding for antialiasing */
RunMetrics Measure(const gfxTextRun* aTextRun, uint32_t aStart, uint32_t aEnd,
BoundingBoxType aBoundingBoxType,
DrawTarget* aDrawTargetForTightBoundingBox,
Spacing* aSpacing,
mozilla::gfx::ShapedTextFlags aOrientation) override;
bool ProvidesGlyphWidths() const override;
int32_t GetGlyphWidth(uint16_t aGID) override;
bool GetGlyphBounds(uint16_t aGID, gfxRect* aBounds, bool aTight) override;
void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const override;
void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
FontCacheSizes* aSizes) const override;
FontType GetType() const override { return FONT_TYPE_DWRITE; }
already_AddRefed<mozilla::gfx::ScaledFont> GetScaledFont(
mozilla::gfx::DrawTarget* aTarget) override;
bool ShouldRoundXOffset(cairo_t* aCairo) const override;
protected:
const Metrics& GetHorizontalMetrics() override;
bool GetFakeMetricsForArialBlack(DWRITE_FONT_METRICS* aFontMetrics);
void ComputeMetrics(AntialiasOption anAAOption);
bool HasBitmapStrikeForSize(uint32_t aSize);
gfxFloat MeasureGlyphWidth(uint16_t aGlyph);
DWRITE_MEASURING_MODE GetMeasuringMode() const;
bool GetForceGDIClassic() const;
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 05:24:48 +00:00
RefPtr<IDWriteFontFace> mFontFace;
RefPtr<IDWriteFontFace1> mFontFace1; // may be unavailable on older DWrite
Metrics* mMetrics;
// cache of glyph widths in 16.16 fixed-point pixels
mozilla::UniquePtr<nsDataHashtable<nsUint32HashKey, int32_t>> mGlyphWidths;
bool mUseSubpixelPositions;
bool mAllowManualShowGlyphs;
// Used to record the sUseClearType setting at the time mAzureScaledFont
// was set up, so we can tell if it's stale and needs to be re-created.
bool mAzureScaledFontUsedClearType;
bool UsingClearType() {
return mozilla::gfx::gfxVars::SystemTextQuality() == CLEARTYPE_QUALITY;
}
};
#endif