diff options
Diffstat (limited to 'chromium/third_party/WebKit/Source/core/platform/graphics/harfbuzz/FontHarfBuzz.cpp')
| -rw-r--r-- | chromium/third_party/WebKit/Source/core/platform/graphics/harfbuzz/FontHarfBuzz.cpp | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/chromium/third_party/WebKit/Source/core/platform/graphics/harfbuzz/FontHarfBuzz.cpp b/chromium/third_party/WebKit/Source/core/platform/graphics/harfbuzz/FontHarfBuzz.cpp deleted file mode 100644 index f5ab6736f0c..00000000000 --- a/chromium/third_party/WebKit/Source/core/platform/graphics/harfbuzz/FontHarfBuzz.cpp +++ /dev/null @@ -1,200 +0,0 @@ -/* - * Copyright (c) 2007, 2008, 2010 Google Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#include "core/platform/graphics/Font.h" - -#include "core/platform/NotImplemented.h" -#include "core/platform/graphics/FloatRect.h" -#include "core/platform/graphics/GlyphBuffer.h" -#include "core/platform/graphics/GraphicsContext.h" -#include "core/platform/graphics/SimpleFontData.h" -#include "core/platform/graphics/harfbuzz/HarfBuzzShaper.h" - -#include "SkPaint.h" -#include "SkTemplates.h" - -#include "wtf/unicode/Unicode.h" - -namespace WebCore { - -bool Font::canReturnFallbackFontsForComplexText() -{ - return false; -} - -bool Font::canExpandAroundIdeographsInComplexText() -{ - return false; -} - -void Font::drawGlyphs(GraphicsContext* gc, const SimpleFontData* font, - const GlyphBuffer& glyphBuffer, int from, int numGlyphs, - const FloatPoint& point, const FloatRect& textRect) const { - SkASSERT(sizeof(GlyphBufferGlyph) == sizeof(uint16_t)); // compile-time assert - - const GlyphBufferGlyph* glyphs = glyphBuffer.glyphs(from); - SkScalar x = SkFloatToScalar(point.x()); - SkScalar y = SkFloatToScalar(point.y()); - - // FIXME: text rendering speed: - // Android has code in their WebCore fork to special case when the - // GlyphBuffer has no advances other than the defaults. In that case the - // text drawing can proceed faster. However, it's unclear when those - // patches may be upstreamed to WebKit so we always use the slower path - // here. - const GlyphBufferAdvance* adv = glyphBuffer.advances(from); - SkAutoSTMalloc<32, SkPoint> storage(numGlyphs), storage2(numGlyphs), storage3(numGlyphs); - SkPoint* pos = storage.get(); - SkPoint* vPosBegin = storage2.get(); - SkPoint* vPosEnd = storage3.get(); - - bool isVertical = font->platformData().orientation() == Vertical; - for (int i = 0; i < numGlyphs; i++) { - SkScalar myWidth = SkFloatToScalar(adv[i].width()); - pos[i].set(x, y); - if (isVertical) { - vPosBegin[i].set(x + myWidth, y); - vPosEnd[i].set(x + myWidth, y - myWidth); - } - x += myWidth; - y += SkFloatToScalar(adv[i].height()); - } - - TextDrawingModeFlags textMode = gc->textDrawingMode(); - - // We draw text up to two times (once for fill, once for stroke). - if (textMode & TextModeFill) { - SkPaint paint; - gc->setupPaintForFilling(&paint); - font->platformData().setupPaint(&paint); - gc->adjustTextRenderMode(&paint); - paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); - - if (isVertical) { - SkPath path; - for (int i = 0; i < numGlyphs; ++i) { - path.reset(); - path.moveTo(vPosBegin[i]); - path.lineTo(vPosEnd[i]); - gc->drawTextOnPath(glyphs + i, 2, path, textRect, 0, paint); - } - } else - gc->drawPosText(glyphs, numGlyphs << 1, pos, textRect, paint); - } - - if ((textMode & TextModeStroke) - && gc->strokeStyle() != NoStroke - && gc->strokeThickness() > 0) { - - SkPaint paint; - gc->setupPaintForStroking(&paint); - font->platformData().setupPaint(&paint); - gc->adjustTextRenderMode(&paint); - paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); - - if (textMode & TextModeFill) { - // If we also filled, we don't want to draw shadows twice. - // See comment in FontChromiumWin.cpp::paintSkiaText() for more details. - // Since we use the looper for shadows, we remove it (if any) now. - paint.setLooper(0); - } - - if (isVertical) { - SkPath path; - for (int i = 0; i < numGlyphs; ++i) { - path.reset(); - path.moveTo(vPosBegin[i]); - path.lineTo(vPosEnd[i]); - gc->drawTextOnPath(glyphs + i, 2, path, textRect, 0, paint); - } - } else - gc->drawPosText(glyphs, numGlyphs << 1, pos, textRect, paint); - } -} - -void Font::drawComplexText(GraphicsContext* gc, const TextRunPaintInfo& runInfo, const FloatPoint& point) const -{ - if (!runInfo.run.length()) - return; - - TextDrawingModeFlags textMode = gc->textDrawingMode(); - bool fill = textMode & TextModeFill; - bool stroke = (textMode & TextModeStroke) - && gc->strokeStyle() != NoStroke - && gc->strokeThickness() > 0; - - if (!fill && !stroke) - return; - - GlyphBuffer glyphBuffer; - HarfBuzzShaper shaper(this, runInfo.run); - shaper.setDrawRange(runInfo.from, runInfo.to); - if (!shaper.shape(&glyphBuffer)) - return; - FloatPoint adjustedPoint = shaper.adjustStartPoint(point); - drawGlyphBuffer(gc, runInfo, glyphBuffer, adjustedPoint); -} - -void Font::drawEmphasisMarksForComplexText(GraphicsContext* /* context */, const TextRunPaintInfo& /* runInfo */, const AtomicString& /* mark */, const FloatPoint& /* point */) const -{ - notImplemented(); -} - -float Font::floatWidthForComplexText(const TextRun& run, HashSet<const SimpleFontData*>* /* fallbackFonts */, GlyphOverflow* /* glyphOverflow */) const -{ - HarfBuzzShaper shaper(this, run); - if (!shaper.shape()) - return 0; - return shaper.totalWidth(); -} - -// Return the code point index for the given |x| offset into the text run. -int Font::offsetForPositionForComplexText(const TextRun& run, float xFloat, - bool includePartialGlyphs) const -{ - HarfBuzzShaper shaper(this, run); - if (!shaper.shape()) - return 0; - return shaper.offsetForPosition(xFloat); -} - -// Return the rectangle for selecting the given range of code-points in the TextRun. -FloatRect Font::selectionRectForComplexText(const TextRun& run, - const FloatPoint& point, int height, - int from, int to) const -{ - HarfBuzzShaper shaper(this, run); - if (!shaper.shape()) - return FloatRect(); - return shaper.selectionRect(point, height, from, to); -} - -} // namespace WebCore |