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bug 1018551 - clean up redundancy in the font/shaper code. r=jdaggett

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This commit is contained in:
Jonathan Kew 2014-05-31 08:12:40 +01:00
parent e6e3ddadf9
commit 68d2010cfd
11 changed files with 72 additions and 211 deletions
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36
gfx/thebes/gfxDWriteFonts.cpp
View File

@ -7,9 +7,7 @@
#include "mozilla/MemoryReporting.h"
#include "gfxHarfBuzzShaper.h"
#include <algorithm>
#include "gfxGraphiteShaper.h"
#include "gfxDWriteFontList.h"
#include "gfxContext.h"
#include <dwrite.h>
@ -106,14 +104,6 @@ gfxDWriteFont::gfxDWriteFont(gfxFontEntry *aFontEntry,
}
ComputeMetrics(anAAOption);
if (FontCanSupportGraphite()) {
mGraphiteShaper = new gfxGraphiteShaper(this);
}
if (FontCanSupportHarfBuzz()) {
mHarfBuzzShaper = new gfxHarfBuzzShaper(this);
}
}
gfxDWriteFont::~gfxDWriteFont()
@ -134,32 +124,6 @@ gfxDWriteFont::CopyWithAntialiasOption(AntialiasOption anAAOption)
&mStyle, mNeedsBold, anAAOption);
}
bool
gfxDWriteFont::ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
{
bool ok = false;
if (mGraphiteShaper && gfxPlatform::GetPlatform()->UseGraphiteShaping()) {
ok = mGraphiteShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
if (!ok && mHarfBuzzShaper) {
ok = mHarfBuzzShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
PostShapingFixup(aContext, aText, aOffset, aLength, aShapedText);
return ok;
}
const gfxFont::Metrics&
gfxDWriteFont::GetMetrics()
{

8
gfx/thebes/gfxDWriteFonts.h
View File

@ -71,14 +71,6 @@ public:
virtual cairo_scaled_font_t *GetCairoScaledFont();
protected:
virtual bool ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping = false);
bool GetFakeMetricsForArialBlack(DWRITE_FONT_METRICS *aFontMetrics);
void ComputeMetrics(AntialiasOption anAAOption);

42
gfx/thebes/gfxFT2Fonts.cpp
View File

@ -24,8 +24,6 @@
#include "gfxFT2Utils.h"
#include "gfxFT2FontList.h"
#include <locale.h>
#include "gfxHarfBuzzShaper.h"
#include "gfxGraphiteShaper.h"
#include "nsGkAtoms.h"
#include "nsTArray.h"
#include "nsUnicodeRange.h"
@ -44,42 +42,20 @@
*/
bool
gfxFT2Font::ShapeText(gfxContext *aContext,
gfxFT2Font::ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText)
{
bool ok = false;
if (FontCanSupportGraphite()) {
if (gfxPlatform::GetPlatform()->UseGraphiteShaping()) {
if (!mGraphiteShaper) {
mGraphiteShaper = new gfxGraphiteShaper(this);
}
ok = mGraphiteShaper->ShapeText(aContext, aText,
aOffset, aLength,
aScript, aShapedText);
}
}
if (!ok) {
if (!mHarfBuzzShaper) {
mHarfBuzzShaper = new gfxHarfBuzzShaper(this);
}
ok = mHarfBuzzShaper->ShapeText(aContext, aText,
aOffset, aLength,
aScript, aShapedText);
}
if (!ok) {
if (!gfxFont::ShapeText(aContext, aText, aOffset, aLength, aScript,
aShapedText)) {
// harfbuzz must have failed(?!), just render raw glyphs
AddRange(aText, aOffset, aLength, aShapedText);
PostShapingFixup(aContext, aText, aOffset, aLength, aShapedText);
}
PostShapingFixup(aContext, aText, aOffset, aLength, aShapedText);
return true;
}

3
gfx/thebes/gfxFT2Fonts.h
View File

@ -77,8 +77,7 @@ protected:
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping);
gfxShapedText *aShapedText);
void FillGlyphDataForChar(uint32_t ch, CachedGlyphData *gd);

35
gfx/thebes/gfxFont.cpp
View File

@ -23,6 +23,7 @@
#include "gfxTypes.h"
#include "gfxContext.h"
#include "gfxFontMissingGlyphs.h"
#include "gfxGraphiteShaper.h"
#include "gfxHarfBuzzShaper.h"
#include "gfxUserFontSet.h"
#include "gfxPlatformFontList.h"
@ -4074,8 +4075,7 @@ gfxFont::ShapeText(gfxContext *aContext,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
gfxShapedText *aShapedText)
{
nsDependentCSubstring ascii((const char*)aText, aLength);
nsAutoString utf16;
@ -4084,7 +4084,7 @@ gfxFont::ShapeText(gfxContext *aContext,
return false;
}
return ShapeText(aContext, utf16.BeginReading(), aOffset, aLength,
aScript, aShapedText, aPreferPlatformShaping);
aScript, aShapedText);
}
bool
@ -4093,30 +4093,29 @@ gfxFont::ShapeText(gfxContext *aContext,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
gfxShapedText *aShapedText)
{
bool ok = false;
if (mGraphiteShaper && gfxPlatform::GetPlatform()->UseGraphiteShaping()) {
ok = mGraphiteShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
if (FontCanSupportGraphite()) {
if (gfxPlatform::GetPlatform()->UseGraphiteShaping()) {
if (!mGraphiteShaper) {
mGraphiteShaper = new gfxGraphiteShaper(this);
}
ok = mGraphiteShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
}
if (!ok && mHarfBuzzShaper && !aPreferPlatformShaping) {
if (!ok) {
if (!mHarfBuzzShaper) {
mHarfBuzzShaper = new gfxHarfBuzzShaper(this);
}
ok = mHarfBuzzShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
if (!ok) {
if (!mPlatformShaper) {
CreatePlatformShaper();
}
if (mPlatformShaper) {
ok = mPlatformShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
}
NS_WARN_IF_FALSE(ok, "shaper failed, expect scrambled or missing text");
PostShapingFixup(aContext, aText, aOffset, aLength, aShapedText);

27
gfx/thebes/gfxFont.h
View File

@ -1479,12 +1479,12 @@ public:
// Shape a piece of text and store the resulting glyph data into
// aShapedText. Parameters aOffset/aLength indicate the range of
// aShapedText to be updated; aLength is also the length of aText.
virtual bool ShapeText(gfxContext *aContext,
virtual bool ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText) = 0;
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText) = 0;
gfxFont *GetFont() const { return mFont; }
@ -1996,8 +1996,7 @@ protected:
uint32_t aOffset, // dest offset in gfxShapedText
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText, // where to store the result
bool aPreferPlatformShaping = false);
gfxShapedText *aShapedText); // where to store the result
// Call the appropriate shaper to generate glyphs for aText and store
// them into aShapedText.
@ -2006,8 +2005,7 @@ protected:
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping = false);
gfxShapedText *aShapedText);
// Helper to adjust for synthetic bold and set character-type flags
// in the shaped text; implementations of ShapeText should call this
@ -2166,19 +2164,14 @@ protected:
// measurement by mathml code
nsAutoPtr<gfxFont> mNonAAFont;
// we may switch between these shapers on the fly, based on the script
// of the text run being shaped
nsAutoPtr<gfxFontShaper> mPlatformShaper;
// we create either or both of these shapers when needed, depending
// whether the font has graphite tables, and whether graphite shaping
// is actually enabled
nsAutoPtr<gfxFontShaper> mHarfBuzzShaper;
nsAutoPtr<gfxFontShaper> mGraphiteShaper;
mozilla::RefPtr<mozilla::gfx::ScaledFont> mAzureScaledFont;
// Create a default platform text shaper for this font.
// (TODO: This should become pure virtual once all font backends have
// been updated.)
virtual void CreatePlatformShaper() { }
// Helper for subclasses that want to initialize standard metrics from the
// tables of sfnt (TrueType/OpenType) fonts.
// This will use mFUnitsConvFactor if it is already set, else compute it

19
gfx/thebes/gfxGDIFont.cpp
View File

@ -8,9 +8,7 @@
#include "mozilla/MemoryReporting.h"
#include "mozilla/WindowsVersion.h"
#include "gfxHarfBuzzShaper.h"
#include <algorithm>
#include "gfxGraphiteShaper.h"
#include "gfxWindowsPlatform.h"
#include "gfxContext.h"
#include "mozilla/Preferences.h"
@ -52,10 +50,6 @@ gfxGDIFont::gfxGDIFont(GDIFontEntry *aFontEntry,
mNeedsBold(aNeedsBold),
mScriptCache(nullptr)
{
if (FontCanSupportGraphite()) {
mGraphiteShaper = new gfxGraphiteShaper(this);
}
mHarfBuzzShaper = new gfxHarfBuzzShaper(this);
}
gfxGDIFont::~gfxGDIFont()
@ -83,13 +77,12 @@ gfxGDIFont::CopyWithAntialiasOption(AntialiasOption anAAOption)
}
bool
gfxGDIFont::ShapeText(gfxContext *aContext,
gfxGDIFont::ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText)
{
if (!mMetrics) {
Initialize();
@ -108,7 +101,7 @@ gfxGDIFont::ShapeText(gfxContext *aContext,
}
return gfxFont::ShapeText(aContext, aText, aOffset, aLength, aScript,
aShapedText, aPreferPlatformShaping);
aShapedText);
}
const gfxFont::Metrics&

11
gfx/thebes/gfxGDIFont.h
View File

@ -72,13 +72,12 @@ public:
protected:
/* override to ensure the cairo font is set up properly */
virtual bool ShapeText(gfxContext *aContext,
virtual bool ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping);
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText);
void Initialize(); // creates metrics and Cairo fonts

41
gfx/thebes/gfxMacFont.cpp
View File

@ -8,9 +8,7 @@
#include "mozilla/MemoryReporting.h"
#include "gfxCoreTextShaper.h"
#include "gfxHarfBuzzShaper.h"
#include <algorithm>
#include "gfxGraphiteShaper.h"
#include "gfxPlatformMac.h"
#include "gfxContext.h"
#include "gfxFontUtils.h"
@ -107,13 +105,6 @@ gfxMacFont::gfxMacFont(MacOSFontEntry *aFontEntry, const gfxFontStyle *aFontStyl
NS_WARNING(warnBuf);
#endif
}
if (FontCanSupportGraphite()) {
mGraphiteShaper = new gfxGraphiteShaper(this);
}
if (FontCanSupportHarfBuzz()) {
mHarfBuzzShaper = new gfxHarfBuzzShaper(this);
}
}
gfxMacFont::~gfxMacFont()
@ -127,29 +118,31 @@ gfxMacFont::~gfxMacFont()
}
bool
gfxMacFont::ShapeText(gfxContext *aContext,
gfxMacFont::ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText)
{
if (!mIsValid) {
NS_WARNING("invalid font! expect incorrect text rendering");
return false;
}
bool requiresAAT =
static_cast<MacOSFontEntry*>(GetFontEntry())->RequiresAATLayout();
return gfxFont::ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText, requiresAAT);
}
if (static_cast<MacOSFontEntry*>(GetFontEntry())->RequiresAATLayout()) {
if (!mCoreTextShaper) {
mCoreTextShaper = new gfxCoreTextShaper(this);
}
if (mCoreTextShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText)) {
PostShapingFixup(aContext, aText, aOffset, aLength, aShapedText);
return true;
}
}
void
gfxMacFont::CreatePlatformShaper()
{
mPlatformShaper = new gfxCoreTextShaper(this);
return gfxFont::ShapeText(aContext, aText, aOffset, aLength, aScript,
aShapedText);
}
bool

15
gfx/thebes/gfxMacFont.h
View File

@ -51,16 +51,13 @@ public:
virtual FontType GetType() const { return FONT_TYPE_MAC; }
protected:
virtual void CreatePlatformShaper();
// override to prefer CoreText shaping with fonts that depend on AAT
virtual bool ShapeText(gfxContext *aContext,
virtual bool ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping = false);
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText);
void InitMetrics();
void InitMetricsFromPlatform();
@ -76,6 +73,8 @@ protected:
cairo_font_face_t *mFontFace;
nsAutoPtr<gfxFontShaper> mCoreTextShaper;
Metrics mMetrics;
uint32_t mSpaceGlyph;
};

46
gfx/thebes/gfxPangoFonts.cpp
View File

@ -20,8 +20,6 @@
#include "gfxFT2Utils.h"
#include "harfbuzz/hb.h"
#include "harfbuzz/hb-ot.h"
#include "gfxHarfBuzzShaper.h"
#include "gfxGraphiteShaper.h"
#include "nsUnicodeProperties.h"
#include "nsUnicodeScriptCodes.h"
#include "gfxFontconfigUtils.h"
@ -663,14 +661,6 @@ public:
protected:
virtual already_AddRefed<gfxFont> GetSmallCapsFont();
virtual bool ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping);
private:
gfxFcFont(cairo_scaled_font_t *aCairoFont, gfxFcFontEntry *aFontEntry,
const gfxFontStyle *aFontStyle);
@ -1564,42 +1554,6 @@ gfxFcFont::GetSmallCapsFont()
return font.forget();
}
bool
gfxFcFont::ShapeText(gfxContext *aContext,
const char16_t *aText,
uint32_t aOffset,
uint32_t aLength,
int32_t aScript,
gfxShapedText *aShapedText,
bool aPreferPlatformShaping)
{
bool ok = false;
if (FontCanSupportGraphite()) {
if (gfxPlatform::GetPlatform()->UseGraphiteShaping()) {
if (!mGraphiteShaper) {
mGraphiteShaper = new gfxGraphiteShaper(this);
}
ok = mGraphiteShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
}
if (!ok) {
if (!mHarfBuzzShaper) {
mHarfBuzzShaper = new gfxHarfBuzzShaper(this);
}
ok = mHarfBuzzShaper->ShapeText(aContext, aText, aOffset, aLength,
aScript, aShapedText);
}
NS_WARN_IF_FALSE(ok, "shaper failed, expect scrambled or missing text");
PostShapingFixup(aContext, aText, aOffset, aLength, aShapedText);
return ok;
}
/* static */ void
gfxPangoFontGroup::Shutdown()
{