| /* |
| * Copyright (c) 2008, 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/skia/SkiaFontWin.h" |
| |
| #include "core/platform/graphics/Gradient.h" |
| #include "core/platform/graphics/GraphicsContext.h" |
| #include "core/platform/graphics/Pattern.h" |
| #include "core/platform/graphics/SimpleFontData.h" |
| #include "core/platform/graphics/win/FontPlatformDataWin.h" |
| #include "platform/transforms/AffineTransform.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkDevice.h" |
| #include "third_party/skia/include/core/SkPaint.h" |
| #include "third_party/skia/include/core/SkShader.h" |
| #include "third_party/skia/include/core/SkTemplates.h" |
| #include "wtf/RefPtr.h" |
| |
| namespace WebCore { |
| |
| static void skiaDrawText(GraphicsContext* context, |
| const SkPoint& point, |
| const SkRect& textRect, |
| SkPaint* paint, |
| const WORD* glyphs, |
| const int* advances, |
| const GOFFSET* offsets, |
| unsigned numGlyphs) |
| { |
| // Reserve space for 64 SkPoints on the stack. If numGlyphs is larger, the array |
| // will dynamically allocate it space for numGlyph glyphs. This is used to store |
| // the computed x,y locations. In the case where offsets==null, then we use it |
| // to store (twice as many) SkScalars for x[] |
| static const size_t kLocalGlyphMax = 64; |
| |
| SkScalar x = point.fX; |
| SkScalar y = point.fY; |
| if (offsets) { |
| SkAutoSTArray<kLocalGlyphMax, SkPoint> storage(numGlyphs); |
| SkPoint* pos = storage.get(); |
| for (unsigned i = 0; i < numGlyphs; i++) { |
| // GDI has dv go up, so we negate it |
| pos[i].set(x + SkIntToScalar(offsets[i].du), |
| y + -SkIntToScalar(offsets[i].dv)); |
| x += SkIntToScalar(advances[i]); |
| } |
| context->drawPosText(glyphs, numGlyphs * sizeof(uint16_t), pos, textRect, *paint); |
| } else { |
| SkAutoSTArray<kLocalGlyphMax * 2, SkScalar> storage(numGlyphs); |
| SkScalar* xpos = storage.get(); |
| for (unsigned i = 0; i < numGlyphs; i++) { |
| xpos[i] = x; |
| x += SkIntToScalar(advances[i]); |
| } |
| context->drawPosTextH(glyphs, numGlyphs * sizeof(uint16_t), |
| xpos, y, textRect, *paint); |
| } |
| } |
| |
| static void paintSkiaText(GraphicsContext* context, |
| const FontPlatformData& data, |
| SkTypeface* face, float size, uint32_t textFlags, |
| unsigned numGlyphs, |
| const WORD* glyphs, |
| const int* advances, |
| const GOFFSET* offsets, |
| const SkPoint& origin, |
| const SkRect& textRect) |
| { |
| TextDrawingModeFlags textMode = context->textDrawingMode(); |
| |
| // Filling (if necessary). This is the common case. |
| SkPaint paint; |
| context->setupPaintForFilling(&paint); |
| paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| data.setupPaint(&paint, context); |
| |
| // FIXME: Only needed to support the HFONT based paintSkiaText |
| // version where a new typeface is created from the HFONT. |
| // As such it can go away once the HFONT code path is removed. |
| paint.setTypeface(face); |
| |
| bool didFill = false; |
| |
| if ((textMode & TextModeFill) && (SkColorGetA(paint.getColor()) || paint.getLooper())) { |
| skiaDrawText(context, origin, textRect, &paint, &glyphs[0], &advances[0], &offsets[0], numGlyphs); |
| didFill = true; |
| } |
| |
| // Stroking on top (if necessary). |
| if ((textMode & TextModeStroke) |
| && context->strokeStyle() != NoStroke |
| && context->strokeThickness() > 0) { |
| |
| paint.reset(); |
| context->setupPaintForStroking(&paint); |
| paint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); |
| data.setupPaint(&paint, context); |
| paint.setTypeface(face); |
| |
| if (didFill) { |
| // If there is a shadow and we filled above, there will already be |
| // a shadow. We don't want to draw it again or it will be too dark |
| // and it will go on top of the fill. |
| // |
| // Note that this isn't strictly correct, since the stroke could be |
| // very thick and the shadow wouldn't account for this. The "right" |
| // thing would be to draw to a new layer and then draw that layer |
| // with a shadow. But this is a lot of extra work for something |
| // that isn't normally an issue. |
| paint.setLooper(0); |
| } |
| |
| skiaDrawText(context, origin, textRect, &paint, &glyphs[0], &advances[0], &offsets[0], numGlyphs); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////// |
| |
| void paintSkiaText(GraphicsContext* context, |
| const FontPlatformData& data, |
| unsigned numGlyphs, |
| const WORD* glyphs, |
| const int* advances, |
| const GOFFSET* offsets, |
| const SkPoint& origin, |
| const SkRect& textRect) |
| { |
| paintSkiaText(context, data, data.typeface(), data.size(), data.paintTextFlags(), |
| numGlyphs, glyphs, advances, offsets, origin, textRect); |
| } |
| #if !USE(HARFBUZZ) |
| void paintSkiaText(GraphicsContext* context, |
| const FontPlatformData& data, |
| HFONT hfont, |
| unsigned numGlyphs, |
| const WORD* glyphs, |
| const int* advances, |
| const GOFFSET* offsets, |
| const SkPoint& origin, |
| const SkRect& textRect) |
| { |
| int size; |
| int paintTextFlags; |
| |
| // Ensure font load for printing, because PDF device needs it. |
| if (context->isPrintingDevice()) |
| FontPlatformData::ensureFontLoaded(hfont); |
| |
| RefPtr<SkTypeface> face = CreateTypefaceFromHFont(hfont, &size, &paintTextFlags); |
| paintSkiaText(context, data, face.get(), size, paintTextFlags, numGlyphs, glyphs, advances, offsets, origin, textRect); |
| } |
| #endif |
| } // namespace WebCore |