mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 08:35:26 +00:00
107 lines
3.8 KiB
C++
107 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* 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_GDIFONT_H
|
|
#define GFX_GDIFONT_H
|
|
|
|
#include "mozilla/MemoryReporting.h"
|
|
#include "gfxFont.h"
|
|
#include "gfxGDIFontList.h"
|
|
|
|
#include "nsDataHashtable.h"
|
|
#include "nsHashKeys.h"
|
|
|
|
#include "cairo.h"
|
|
#include "usp10.h"
|
|
|
|
class gfxGDIFont : public gfxFont
|
|
{
|
|
public:
|
|
gfxGDIFont(GDIFontEntry *aFontEntry,
|
|
const gfxFontStyle *aFontStyle,
|
|
bool aNeedsBold,
|
|
AntialiasOption anAAOption = kAntialiasDefault);
|
|
|
|
virtual ~gfxGDIFont();
|
|
|
|
HFONT GetHFONT() { if (!mMetrics) Initialize(); return mFont; }
|
|
|
|
gfxFloat GetAdjustedSize() { if (!mMetrics) Initialize(); return mAdjustedSize; }
|
|
|
|
cairo_font_face_t *CairoFontFace() { return mFontFace; }
|
|
cairo_scaled_font_t *CairoScaledFont() { return mScaledFont; }
|
|
|
|
/* overrides for the pure virtual methods in gfxFont */
|
|
virtual const gfxFont::Metrics& GetMetrics();
|
|
|
|
virtual uint32_t GetSpaceGlyph();
|
|
|
|
virtual bool SetupCairoFont(gfxContext *aContext);
|
|
|
|
/* override Measure to add padding for antialiasing */
|
|
virtual RunMetrics Measure(gfxTextRun *aTextRun,
|
|
uint32_t aStart, uint32_t aEnd,
|
|
BoundingBoxType aBoundingBoxType,
|
|
gfxContext *aContextForTightBoundingBox,
|
|
Spacing *aSpacing);
|
|
|
|
/* required for MathML to suppress effects of ClearType "padding" */
|
|
virtual gfxFont* CopyWithAntialiasOption(AntialiasOption anAAOption);
|
|
|
|
// If the font has a cmap table, we handle it purely with harfbuzz;
|
|
// but if not (e.g. .fon fonts), we'll use a GDI callback to get glyphs.
|
|
virtual bool ProvidesGetGlyph() const {
|
|
return !mFontEntry->HasCmapTable();
|
|
}
|
|
|
|
virtual uint32_t GetGlyph(uint32_t aUnicode, uint32_t aVarSelector);
|
|
|
|
virtual bool ProvidesGlyphWidths() const { return true; }
|
|
|
|
// get hinted glyph width in pixels as 16.16 fixed-point value
|
|
virtual int32_t GetGlyphWidth(gfxContext *aCtx, uint16_t aGID);
|
|
|
|
virtual void AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
|
|
FontCacheSizes* aSizes) const;
|
|
virtual void AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
|
|
FontCacheSizes* aSizes) const;
|
|
|
|
virtual FontType GetType() const { return FONT_TYPE_GDI; }
|
|
|
|
protected:
|
|
/* override to ensure the cairo font is set up properly */
|
|
virtual bool ShapeText(gfxContext *aContext,
|
|
const char16_t *aText,
|
|
uint32_t aOffset,
|
|
uint32_t aLength,
|
|
int32_t aScript,
|
|
gfxShapedText *aShapedText,
|
|
bool aPreferPlatformShaping);
|
|
|
|
void Initialize(); // creates metrics and Cairo fonts
|
|
|
|
// Fill the given LOGFONT record according to our style, but don't adjust
|
|
// the lfItalic field if we're going to use a cairo transform for fake
|
|
// italics.
|
|
void FillLogFont(LOGFONTW& aLogFont, gfxFloat aSize, bool aUseGDIFakeItalic);
|
|
|
|
HFONT mFont;
|
|
cairo_font_face_t *mFontFace;
|
|
|
|
Metrics *mMetrics;
|
|
uint32_t mSpaceGlyph;
|
|
|
|
bool mNeedsBold;
|
|
|
|
// cache of glyph IDs (used for non-sfnt fonts only)
|
|
nsAutoPtr<nsDataHashtable<nsUint32HashKey,uint32_t> > mGlyphIDs;
|
|
SCRIPT_CACHE mScriptCache;
|
|
|
|
// cache of glyph widths in 16.16 fixed-point pixels
|
|
nsAutoPtr<nsDataHashtable<nsUint32HashKey,int32_t> > mGlyphWidths;
|
|
};
|
|
|
|
#endif /* GFX_GDIFONT_H */
|