mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
4a526ace27
After this change, we have ShallowSizeOf{In,Ex}cludingThis(), which don't do
anything to measure children. (They can be combined with iteration to measure
children.)
And we still have the existing single-arg SizeOf{In,Ex}cluding() functions,
which work if the entry type itself defines SizeOfExcludingThis().
249 lines
8.0 KiB
C++
249 lines
8.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#if defined(MOZ_WIDGET_GTK)
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#include "gfxPlatformGtk.h"
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#define gfxToolkitPlatform gfxPlatformGtk
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#elif defined(MOZ_WIDGET_QT)
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#include <qfontinfo.h>
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#include "gfxQtPlatform.h"
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#define gfxToolkitPlatform gfxQtPlatform
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#elif defined(XP_WIN)
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#include "gfxWindowsPlatform.h"
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#define gfxToolkitPlatform gfxWindowsPlatform
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#elif defined(ANDROID)
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#include "gfxAndroidPlatform.h"
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#define gfxToolkitPlatform gfxAndroidPlatform
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#endif
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#include "gfxTypes.h"
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#include "gfxFT2Fonts.h"
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#include "gfxFT2FontBase.h"
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#include "gfxFT2Utils.h"
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#include "gfxFT2FontList.h"
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#include "gfxTextRun.h"
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#include <locale.h>
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#include "nsGkAtoms.h"
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#include "nsTArray.h"
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#include "nsUnicodeRange.h"
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#include "nsCRT.h"
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#include "nsXULAppAPI.h"
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#include "mozilla/Logging.h"
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#include "prinit.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/gfx/2D.h"
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/**
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* gfxFT2Font
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*/
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bool
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gfxFT2Font::ShapeText(gfxContext *aContext,
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const char16_t *aText,
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uint32_t aOffset,
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uint32_t aLength,
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int32_t aScript,
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bool aVertical,
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gfxShapedText *aShapedText)
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{
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if (!gfxFont::ShapeText(aContext, aText, aOffset, aLength, aScript,
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aVertical, aShapedText)) {
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// harfbuzz must have failed(?!), just render raw glyphs
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AddRange(aText, aOffset, aLength, aShapedText);
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PostShapingFixup(aContext, aText, aOffset, aLength, aVertical,
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aShapedText);
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}
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return true;
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}
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void
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gfxFT2Font::AddRange(const char16_t *aText, uint32_t aOffset,
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uint32_t aLength, gfxShapedText *aShapedText)
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{
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const uint32_t appUnitsPerDevUnit = aShapedText->GetAppUnitsPerDevUnit();
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// we'll pass this in/figure it out dynamically, but at this point there can be only one face.
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gfxFT2LockedFace faceLock(this);
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FT_Face face = faceLock.get();
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gfxShapedText::CompressedGlyph *charGlyphs =
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aShapedText->GetCharacterGlyphs();
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const gfxFT2Font::CachedGlyphData *cgd = nullptr, *cgdNext = nullptr;
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FT_UInt spaceGlyph = GetSpaceGlyph();
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for (uint32_t i = 0; i < aLength; i++, aOffset++) {
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char16_t ch = aText[i];
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if (ch == 0) {
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// treat this null byte as a missing glyph, don't create a glyph for it
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aShapedText->SetMissingGlyph(aOffset, 0, this);
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continue;
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}
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NS_ASSERTION(!gfxFontGroup::IsInvalidChar(ch), "Invalid char detected");
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if (cgdNext) {
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cgd = cgdNext;
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cgdNext = nullptr;
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} else {
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cgd = GetGlyphDataForChar(ch);
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}
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FT_UInt gid = cgd->glyphIndex;
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int32_t advance = 0;
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if (gid == 0) {
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advance = -1; // trigger the missing glyphs case below
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} else {
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// find next character and its glyph -- in case they exist
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// and exist in the current font face -- to compute kerning
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char16_t chNext = 0;
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FT_UInt gidNext = 0;
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FT_Pos lsbDeltaNext = 0;
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if (FT_HAS_KERNING(face) && i + 1 < aLength) {
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chNext = aText[i + 1];
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if (chNext != 0) {
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cgdNext = GetGlyphDataForChar(chNext);
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gidNext = cgdNext->glyphIndex;
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if (gidNext && gidNext != spaceGlyph)
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lsbDeltaNext = cgdNext->lsbDelta;
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}
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}
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advance = cgd->xAdvance;
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// now add kerning to the current glyph's advance
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if (chNext && gidNext) {
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FT_Vector kerning; kerning.x = 0;
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FT_Get_Kerning(face, gid, gidNext, FT_KERNING_DEFAULT, &kerning);
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advance += kerning.x;
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if (cgd->rsbDelta - lsbDeltaNext >= 32) {
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advance -= 64;
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} else if (cgd->rsbDelta - lsbDeltaNext < -32) {
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advance += 64;
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}
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}
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// convert 26.6 fixed point to app units
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// round rather than truncate to nearest pixel
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// because these advances are often scaled
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advance = ((advance * appUnitsPerDevUnit + 32) >> 6);
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}
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if (advance >= 0 &&
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gfxShapedText::CompressedGlyph::IsSimpleAdvance(advance) &&
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gfxShapedText::CompressedGlyph::IsSimpleGlyphID(gid)) {
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charGlyphs[aOffset].SetSimpleGlyph(advance, gid);
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} else if (gid == 0) {
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// gid = 0 only happens when the glyph is missing from the font
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aShapedText->SetMissingGlyph(aOffset, ch, this);
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} else {
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gfxTextRun::DetailedGlyph details;
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details.mGlyphID = gid;
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NS_ASSERTION(details.mGlyphID == gid,
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"Seriously weird glyph ID detected!");
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details.mAdvance = advance;
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details.mXOffset = 0;
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details.mYOffset = 0;
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gfxShapedText::CompressedGlyph g;
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g.SetComplex(charGlyphs[aOffset].IsClusterStart(), true, 1);
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aShapedText->SetGlyphs(aOffset, g, &details);
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}
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}
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}
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gfxFT2Font::gfxFT2Font(cairo_scaled_font_t *aCairoFont,
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FT2FontEntry *aFontEntry,
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const gfxFontStyle *aFontStyle,
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bool aNeedsBold)
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: gfxFT2FontBase(aCairoFont, aFontEntry, aFontStyle)
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, mCharGlyphCache(32)
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{
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NS_ASSERTION(mFontEntry, "Unable to find font entry for font. Something is whack.");
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mApplySyntheticBold = aNeedsBold;
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}
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gfxFT2Font::~gfxFT2Font()
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{
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}
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void
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gfxFT2Font::FillGlyphDataForChar(uint32_t ch, CachedGlyphData *gd)
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{
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gfxFT2LockedFace faceLock(this);
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FT_Face face = faceLock.get();
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if (!face->charmap || face->charmap->encoding != FT_ENCODING_UNICODE) {
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FT_Select_Charmap(face, FT_ENCODING_UNICODE);
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}
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FT_UInt gid = FT_Get_Char_Index(face, ch);
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if (gid == 0) {
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// this font doesn't support this char!
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NS_ASSERTION(gid != 0, "We don't have a glyph, but font indicated that it supported this char in tables?");
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gd->glyphIndex = 0;
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return;
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}
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FT_Int32 flags = gfxPlatform::GetPlatform()->FontHintingEnabled() ?
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FT_LOAD_DEFAULT :
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(FT_LOAD_NO_AUTOHINT | FT_LOAD_NO_HINTING);
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FT_Error err = FT_Load_Glyph(face, gid, flags);
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if (err) {
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// hmm, this is weird, we failed to load a glyph that we had?
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NS_WARNING("Failed to load glyph that we got from Get_Char_index");
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gd->glyphIndex = 0;
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return;
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}
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gd->glyphIndex = gid;
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gd->lsbDelta = face->glyph->lsb_delta;
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gd->rsbDelta = face->glyph->rsb_delta;
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gd->xAdvance = face->glyph->advance.x;
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}
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void
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gfxFT2Font::AddSizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const
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{
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gfxFont::AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
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aSizes->mFontInstances +=
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mCharGlyphCache.ShallowSizeOfExcludingThis(aMallocSizeOf);
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}
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void
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gfxFT2Font::AddSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf,
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FontCacheSizes* aSizes) const
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{
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aSizes->mFontInstances += aMallocSizeOf(this);
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AddSizeOfExcludingThis(aMallocSizeOf, aSizes);
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}
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#ifdef USE_SKIA
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already_AddRefed<mozilla::gfx::GlyphRenderingOptions>
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gfxFT2Font::GetGlyphRenderingOptions(const TextRunDrawParams* aRunParams)
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{
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mozilla::gfx::FontHinting hinting;
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if (gfxPlatform::GetPlatform()->FontHintingEnabled()) {
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hinting = mozilla::gfx::FontHinting::NORMAL;
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} else {
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hinting = mozilla::gfx::FontHinting::NONE;
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}
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// We don't want to force the use of the autohinter over the font's built in hints
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return mozilla::gfx::Factory::CreateCairoGlyphRenderingOptions(hinting, false);
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}
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#endif
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