2 * Copyright (C) 2017 Metrological Group B.V.
3 * Copyright (C) 2017 Igalia S.L.
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28 #include "GraphicsContextImplCairo.h"
32 #include "CairoOperations.h"
33 #include "FloatRoundedRect.h"
35 #include "GlyphBuffer.h"
36 #include "GraphicsContextPlatformPrivateCairo.h"
37 #include "ImageBuffer.h"
43 GraphicsContext::GraphicsContextImplFactory GraphicsContextImplCairo::createFactory(PlatformContextCairo& platformContext)
45 return GraphicsContext::GraphicsContextImplFactory(
46 [&platformContext](GraphicsContext& context)
48 return std::make_unique<GraphicsContextImplCairo>(context, platformContext);
52 GraphicsContext::GraphicsContextImplFactory GraphicsContextImplCairo::createFactory(cairo_t* cairoContext)
54 return GraphicsContext::GraphicsContextImplFactory(
55 [cairoContext](GraphicsContext& context)
57 return std::make_unique<GraphicsContextImplCairo>(context, cairoContext);
61 GraphicsContextImplCairo::GraphicsContextImplCairo(GraphicsContext& context, PlatformContextCairo& platformContext)
62 : GraphicsContextImpl(context, FloatRect { }, AffineTransform { })
63 , m_platformContext(platformContext)
64 , m_private(std::make_unique<GraphicsContextPlatformPrivate>(m_platformContext))
66 m_platformContext.setGraphicsContextPrivate(m_private.get());
67 m_private->syncContext(m_platformContext.cr());
70 GraphicsContextImplCairo::GraphicsContextImplCairo(GraphicsContext& context, cairo_t* cairoContext)
71 : GraphicsContextImpl(context, FloatRect { }, AffineTransform { })
72 , m_ownedPlatformContext(std::make_unique<PlatformContextCairo>(cairoContext))
73 , m_platformContext(*m_ownedPlatformContext)
74 , m_private(std::make_unique<GraphicsContextPlatformPrivate>(m_platformContext))
76 m_platformContext.setGraphicsContextPrivate(m_private.get());
77 m_private->syncContext(m_platformContext.cr());
80 GraphicsContextImplCairo::~GraphicsContextImplCairo()
82 m_platformContext.setGraphicsContextPrivate(nullptr);
85 bool GraphicsContextImplCairo::hasPlatformContext() const
90 PlatformContextCairo* GraphicsContextImplCairo::platformContext() const
92 return &m_platformContext;
95 void GraphicsContextImplCairo::updateState(const GraphicsContextState& state, GraphicsContextState::StateChangeFlags flags)
97 if (flags & GraphicsContextState::StrokeThicknessChange)
98 Cairo::State::setStrokeThickness(m_platformContext, state.strokeThickness);
100 if (flags & GraphicsContextState::StrokeStyleChange)
101 Cairo::State::setStrokeStyle(m_platformContext, state.strokeStyle);
103 if (flags & GraphicsContextState::ShadowChange) {
104 if (state.shadowsIgnoreTransforms) {
105 // Meaning that this graphics context is associated with a CanvasRenderingContext
106 // We flip the height since CG and HTML5 Canvas have opposite Y axis
107 auto& mutableState = const_cast<GraphicsContextState&>(graphicsContext().state());
108 auto& shadowOffset = state.shadowOffset;
109 mutableState.shadowOffset = { shadowOffset.width(), -shadowOffset.height() };
113 if (flags & GraphicsContextState::CompositeOperationChange)
114 Cairo::State::setCompositeOperation(m_platformContext, state.compositeOperator, state.blendMode);
116 if (flags & GraphicsContextState::ShouldAntialiasChange)
117 Cairo::State::setShouldAntialias(m_platformContext, state.shouldAntialias);
120 void GraphicsContextImplCairo::clearShadow()
124 void GraphicsContextImplCairo::setLineCap(LineCap lineCap)
126 Cairo::setLineCap(m_platformContext, lineCap);
129 void GraphicsContextImplCairo::setLineDash(const DashArray& dashes, float dashOffset)
131 Cairo::setLineDash(m_platformContext, dashes, dashOffset);
134 void GraphicsContextImplCairo::setLineJoin(LineJoin lineJoin)
136 Cairo::setLineJoin(m_platformContext, lineJoin);
139 void GraphicsContextImplCairo::setMiterLimit(float miterLimit)
141 Cairo::setMiterLimit(m_platformContext, miterLimit);
144 void GraphicsContextImplCairo::fillRect(const FloatRect& rect)
146 auto& state = graphicsContext().state();
147 Cairo::fillRect(m_platformContext, rect, Cairo::FillSource(state), Cairo::ShadowState(state));
150 void GraphicsContextImplCairo::fillRect(const FloatRect& rect, const Color& color)
152 Cairo::fillRect(m_platformContext, rect, color, Cairo::ShadowState(graphicsContext().state()));
155 void GraphicsContextImplCairo::fillRect(const FloatRect& rect, Gradient& gradient)
157 RefPtr<cairo_pattern_t> platformGradient = adoptRef(gradient.createPlatformGradient(1.0));
158 if (!platformGradient)
161 Cairo::save(m_platformContext);
162 Cairo::fillRect(m_platformContext, rect, platformGradient.get());
163 Cairo::restore(m_platformContext);
166 void GraphicsContextImplCairo::fillRect(const FloatRect& rect, const Color& color, CompositeOperator compositeOperator, BlendMode blendMode)
168 auto& state = graphicsContext().state();
169 CompositeOperator previousOperator = state.compositeOperator;
171 Cairo::State::setCompositeOperation(m_platformContext, compositeOperator, blendMode);
172 Cairo::fillRect(m_platformContext, rect, color, Cairo::ShadowState(state));
173 Cairo::State::setCompositeOperation(m_platformContext, previousOperator, BlendMode::Normal);
176 void GraphicsContextImplCairo::fillRoundedRect(const FloatRoundedRect& rect, const Color& color, BlendMode blendMode)
178 auto& state = graphicsContext().state();
180 CompositeOperator previousOperator = state.compositeOperator;
181 Cairo::State::setCompositeOperation(m_platformContext, previousOperator, blendMode);
183 Cairo::ShadowState shadowState(state);
184 if (rect.isRounded())
185 Cairo::fillRoundedRect(m_platformContext, rect, color, shadowState);
187 Cairo::fillRect(m_platformContext, rect.rect(), color, shadowState);
189 Cairo::State::setCompositeOperation(m_platformContext, previousOperator, BlendMode::Normal);
192 void GraphicsContextImplCairo::fillRectWithRoundedHole(const FloatRect& rect, const FloatRoundedRect& roundedHoleRect, const Color&)
194 Cairo::fillRectWithRoundedHole(m_platformContext, rect, roundedHoleRect, { }, Cairo::ShadowState(graphicsContext().state()));
197 void GraphicsContextImplCairo::fillPath(const Path& path)
199 auto& state = graphicsContext().state();
200 Cairo::fillPath(m_platformContext, path, Cairo::FillSource(state), Cairo::ShadowState(state));
203 void GraphicsContextImplCairo::fillEllipse(const FloatRect& rect)
206 path.addEllipse(rect);
210 void GraphicsContextImplCairo::strokeRect(const FloatRect& rect, float lineWidth)
212 auto& state = graphicsContext().state();
213 Cairo::strokeRect(m_platformContext, rect, lineWidth, Cairo::StrokeSource(state), Cairo::ShadowState(state));
216 void GraphicsContextImplCairo::strokePath(const Path& path)
218 auto& state = graphicsContext().state();
219 Cairo::strokePath(m_platformContext, path, Cairo::StrokeSource(state), Cairo::ShadowState(state));
222 void GraphicsContextImplCairo::strokeEllipse(const FloatRect& rect)
225 path.addEllipse(rect);
229 void GraphicsContextImplCairo::clearRect(const FloatRect& rect)
231 Cairo::clearRect(m_platformContext, rect);
234 void GraphicsContextImplCairo::drawGlyphs(const Font& font, const GlyphBuffer& glyphBuffer, unsigned from, unsigned numGlyphs, const FloatPoint& point, FontSmoothingMode fontSmoothing)
236 UNUSED_PARAM(fontSmoothing);
237 if (!font.platformData().size())
240 auto xOffset = point.x();
241 Vector<cairo_glyph_t> glyphs(numGlyphs);
243 ASSERT(from + numGlyphs <= glyphBuffer.size());
244 auto* glyphsData = glyphBuffer.glyphs(from);
245 auto* advances = glyphBuffer.advances(from);
247 auto yOffset = point.y();
248 for (size_t i = 0; i < numGlyphs; ++i) {
249 glyphs[i] = { glyphsData[i], xOffset, yOffset };
250 xOffset += advances[i].width();
251 yOffset -= advances[i].height();
255 cairo_scaled_font_t* scaledFont = font.platformData().scaledFont();
256 double syntheticBoldOffset = font.syntheticBoldOffset();
258 auto& state = graphicsContext().state();
259 Cairo::drawGlyphs(m_platformContext, Cairo::FillSource(state), Cairo::StrokeSource(state),
260 Cairo::ShadowState(state), point, scaledFont, syntheticBoldOffset, glyphs, xOffset,
261 state.textDrawingMode, state.strokeThickness, state.shadowOffset, state.shadowColor);
264 ImageDrawResult GraphicsContextImplCairo::drawImage(Image& image, const FloatRect& destination, const FloatRect& source, const ImagePaintingOptions& imagePaintingOptions)
266 return GraphicsContextImpl::drawImageImpl(graphicsContext(), image, destination, source, imagePaintingOptions);
269 ImageDrawResult GraphicsContextImplCairo::drawTiledImage(Image& image, const FloatRect& destination, const FloatPoint& source, const FloatSize& tileSize, const FloatSize& spacing, const ImagePaintingOptions& imagePaintingOptions)
271 return GraphicsContextImpl::drawTiledImageImpl(graphicsContext(), image, destination, source, tileSize, spacing, imagePaintingOptions);
274 ImageDrawResult GraphicsContextImplCairo::drawTiledImage(Image& image, const FloatRect& destination, const FloatRect& source, const FloatSize& tileScaleFactor, Image::TileRule hRule, Image::TileRule vRule, const ImagePaintingOptions& imagePaintingOptions)
276 return GraphicsContextImpl::drawTiledImageImpl(graphicsContext(), image, destination, source, tileScaleFactor, hRule, vRule, imagePaintingOptions);
279 void GraphicsContextImplCairo::drawNativeImage(const NativeImagePtr& image, const FloatSize& imageSize, const FloatRect& destRect, const FloatRect& srcRect, CompositeOperator compositeOperator, BlendMode blendMode, ImageOrientation orientation)
281 UNUSED_PARAM(imageSize);
282 auto& state = graphicsContext().state();
283 Cairo::drawNativeImage(m_platformContext, image.get(), destRect, srcRect, compositeOperator, blendMode, orientation, state.imageInterpolationQuality, state.alpha, Cairo::ShadowState(state));
286 void GraphicsContextImplCairo::drawPattern(Image& image, const FloatRect& destRect, const FloatRect& tileRect, const AffineTransform& patternTransform, const FloatPoint& phase, const FloatSize&, CompositeOperator compositeOperator, BlendMode blendMode)
288 if (auto surface = image.nativeImageForCurrentFrame())
289 Cairo::drawPattern(m_platformContext, surface.get(), IntSize(image.size()), destRect, tileRect, patternTransform, phase, compositeOperator, blendMode);
292 void GraphicsContextImplCairo::drawRect(const FloatRect& rect, float borderThickness)
294 auto& state = graphicsContext().state();
295 Cairo::drawRect(m_platformContext, rect, borderThickness, state.fillColor, state.strokeStyle, state.strokeColor);
298 void GraphicsContextImplCairo::drawLine(const FloatPoint& point1, const FloatPoint& point2)
300 auto& state = graphicsContext().state();
301 Cairo::drawLine(m_platformContext, point1, point2, state.strokeStyle, state.strokeColor, state.strokeThickness, state.shouldAntialias);
304 void GraphicsContextImplCairo::drawLinesForText(const FloatPoint& point, float thickness, const DashArray& widths, bool printing, bool doubleUnderlines)
306 auto& state = graphicsContext().state();
307 Cairo::drawLinesForText(m_platformContext, point, thickness, widths, printing, doubleUnderlines, state.strokeColor);
310 void GraphicsContextImplCairo::drawDotsForDocumentMarker(const FloatRect& rect, DocumentMarkerLineStyle style)
312 Cairo::drawDotsForDocumentMarker(m_platformContext, rect, style);
315 void GraphicsContextImplCairo::drawEllipse(const FloatRect& rect)
317 auto& state = graphicsContext().state();
318 Cairo::drawEllipse(*platformContext(), rect, state.fillColor, state.strokeStyle, state.strokeColor, state.strokeThickness);
321 void GraphicsContextImplCairo::drawPath(const Path&)
325 void GraphicsContextImplCairo::drawFocusRing(const Path& path, float width, float offset, const Color& color)
327 UNUSED_PARAM(offset);
328 Cairo::drawFocusRing(m_platformContext, path, width, color);
331 void GraphicsContextImplCairo::drawFocusRing(const Vector<FloatRect>& rects, float width, float offset, const Color& color)
333 UNUSED_PARAM(offset);
334 Cairo::drawFocusRing(m_platformContext, rects, width, color);
337 void GraphicsContextImplCairo::save()
339 Cairo::save(m_platformContext);
342 void GraphicsContextImplCairo::restore()
344 Cairo::restore(m_platformContext);
347 void GraphicsContextImplCairo::translate(float x, float y)
349 Cairo::translate(m_platformContext, x, y);
352 void GraphicsContextImplCairo::rotate(float angleInRadians)
354 Cairo::rotate(m_platformContext, angleInRadians);
357 void GraphicsContextImplCairo::scale(const FloatSize& size)
359 Cairo::scale(m_platformContext, size);
362 void GraphicsContextImplCairo::concatCTM(const AffineTransform& transform)
364 Cairo::concatCTM(m_platformContext, transform);
367 void GraphicsContextImplCairo::setCTM(const AffineTransform& transform)
369 Cairo::State::setCTM(m_platformContext, transform);
372 AffineTransform GraphicsContextImplCairo::getCTM(GraphicsContext::IncludeDeviceScale)
374 return Cairo::State::getCTM(m_platformContext);
377 void GraphicsContextImplCairo::beginTransparencyLayer(float opacity)
379 Cairo::beginTransparencyLayer(m_platformContext, opacity);
382 void GraphicsContextImplCairo::endTransparencyLayer()
384 Cairo::endTransparencyLayer(m_platformContext);
387 void GraphicsContextImplCairo::clip(const FloatRect& rect)
389 Cairo::clip(m_platformContext, rect);
392 void GraphicsContextImplCairo::clipOut(const FloatRect& rect)
394 Cairo::clipOut(m_platformContext, rect);
397 void GraphicsContextImplCairo::clipOut(const Path& path)
399 Cairo::clipOut(m_platformContext, path);
402 void GraphicsContextImplCairo::clipPath(const Path& path, WindRule clipRule)
404 Cairo::clipPath(m_platformContext, path, clipRule);
407 IntRect GraphicsContextImplCairo::clipBounds()
409 return Cairo::State::getClipBounds(m_platformContext);
412 void GraphicsContextImplCairo::clipToImageBuffer(ImageBuffer& buffer, const FloatRect& destRect)
414 RefPtr<Image> image = buffer.copyImage(DontCopyBackingStore);
418 if (auto surface = image->nativeImageForCurrentFrame())
419 Cairo::clipToImageBuffer(m_platformContext, surface.get(), destRect);
422 void GraphicsContextImplCairo::applyDeviceScaleFactor(float)
426 FloatRect GraphicsContextImplCairo::roundToDevicePixels(const FloatRect& rect, GraphicsContext::RoundingMode)
428 return Cairo::State::roundToDevicePixels(m_platformContext, rect);
431 } // namespace WebCore