Index: Source/core/paint/ImagePainter.cpp |
diff --git a/Source/core/paint/ImagePainter.cpp b/Source/core/paint/ImagePainter.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..7759ee0d2d01f4244cb032365570bc9ebedeffb8 |
--- /dev/null |
+++ b/Source/core/paint/ImagePainter.cpp |
@@ -0,0 +1,194 @@ |
+// Copyright 2014 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#include "config.h" |
+#include "core/paint/ImagePainter.h" |
+ |
+#include "core/dom/Document.h" |
+#include "core/dom/Element.h" |
+#include "core/editing/FrameSelection.h" |
+#include "core/frame/LocalFrame.h" |
+#include "core/html/HTMLAreaElement.h" |
+#include "core/html/HTMLImageElement.h" |
+#include "core/inspector/InspectorInstrumentation.h" |
+#include "core/page/Page.h" |
+#include "core/paint/BoxPainter.h" |
+#include "core/rendering/PaintInfo.h" |
+#include "core/rendering/RenderImage.h" |
+#include "core/rendering/RenderReplaced.h" |
+#include "core/rendering/TextRunConstructor.h" |
+#include "platform/geometry/LayoutPoint.h" |
+#include "platform/graphics/GraphicsContextStateSaver.h" |
+#include "platform/graphics/Path.h" |
+ |
+namespace blink { |
+ |
+void ImagePainter::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
+{ |
+ m_renderImage.RenderReplaced::paint(paintInfo, paintOffset); |
+ |
+ if (paintInfo.phase == PaintPhaseOutline) |
+ paintAreaElementFocusRing(paintInfo); |
+} |
+ |
+void ImagePainter::paintAreaElementFocusRing(PaintInfo& paintInfo) |
+{ |
+ Document& document = m_renderImage.document(); |
+ |
+ if (document.printing() || !document.frame()->selection().isFocusedAndActive()) |
+ return; |
+ |
+ Element* focusedElement = document.focusedElement(); |
+ if (!isHTMLAreaElement(focusedElement)) |
+ return; |
+ |
+ HTMLAreaElement& areaElement = toHTMLAreaElement(*focusedElement); |
+ if (areaElement.imageElement() != m_renderImage.node()) |
+ return; |
+ |
+ // Even if the theme handles focus ring drawing for entire elements, it won't do it for |
+ // an area within an image, so we don't call RenderTheme::supportsFocusRing here. |
+ |
+ Path path = areaElement.computePath(&m_renderImage); |
+ if (path.isEmpty()) |
+ return; |
+ |
+ RenderStyle* areaElementStyle = areaElement.computedStyle(); |
+ unsigned short outlineWidth = areaElementStyle->outlineWidth(); |
+ if (!outlineWidth) |
+ return; |
+ |
+ // FIXME: Clip path instead of context when Skia pathops is ready. |
+ // https://crbug.com/251206 |
+ GraphicsContextStateSaver savedContext(*paintInfo.context); |
+ paintInfo.context->clip(m_renderImage.absoluteContentBox()); |
+ paintInfo.context->drawFocusRing(path, outlineWidth, |
+ areaElementStyle->outlineOffset(), |
+ m_renderImage.resolveColor(areaElementStyle, CSSPropertyOutlineColor)); |
+} |
+ |
+void ImagePainter::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
+{ |
+ LayoutUnit cWidth = m_renderImage.contentWidth(); |
+ LayoutUnit cHeight = m_renderImage.contentHeight(); |
+ |
+ GraphicsContext* context = paintInfo.context; |
+ |
+ if (!m_renderImage.imageResource()->hasImage() || m_renderImage.imageResource()->errorOccurred()) { |
+ if (paintInfo.phase == PaintPhaseSelection) |
+ return; |
+ |
+ if (cWidth > 2 && cHeight > 2) { |
+ const int borderWidth = 1; |
+ |
+ LayoutUnit leftBorder = m_renderImage.borderLeft(); |
+ LayoutUnit topBorder = m_renderImage.borderTop(); |
+ LayoutUnit leftPad = m_renderImage.paddingLeft(); |
+ LayoutUnit topPad = m_renderImage.paddingTop(); |
+ |
+ // Draw an outline rect where the image should be. |
+ context->setStrokeStyle(SolidStroke); |
+ context->setStrokeColor(Color::lightGray); |
+ context->setFillColor(Color::transparent); |
+ context->drawRect(pixelSnappedIntRect(LayoutRect(paintOffset.x() + leftBorder + leftPad, paintOffset.y() + topBorder + topPad, cWidth, cHeight))); |
+ |
+ bool errorPictureDrawn = false; |
+ LayoutSize imageOffset; |
+ // When calculating the usable dimensions, exclude the pixels of |
+ // the ouline rect so the error image/alt text doesn't draw on it. |
+ LayoutUnit usableWidth = cWidth - 2 * borderWidth; |
+ LayoutUnit usableHeight = cHeight - 2 * borderWidth; |
+ |
+ RefPtr<Image> image = m_renderImage.imageResource()->image(); |
+ |
+ if (m_renderImage.imageResource()->errorOccurred() && !image->isNull() && usableWidth >= image->width() && usableHeight >= image->height()) { |
+ float deviceScaleFactor = blink::deviceScaleFactor(m_renderImage.frame()); |
+ // Call brokenImage() explicitly to ensure we get the broken image icon at the appropriate resolution. |
+ pair<Image*, float> brokenImageAndImageScaleFactor = ImageResource::brokenImage(deviceScaleFactor); |
+ image = brokenImageAndImageScaleFactor.first; |
+ IntSize imageSize = image->size(); |
+ imageSize.scale(1 / brokenImageAndImageScaleFactor.second); |
+ // Center the error image, accounting for border and padding. |
+ LayoutUnit centerX = (usableWidth - imageSize.width()) / 2; |
+ if (centerX < 0) |
+ centerX = 0; |
+ LayoutUnit centerY = (usableHeight - imageSize.height()) / 2; |
+ if (centerY < 0) |
+ centerY = 0; |
+ imageOffset = LayoutSize(leftBorder + leftPad + centerX + borderWidth, topBorder + topPad + centerY + borderWidth); |
+ context->drawImage(image.get(), pixelSnappedIntRect(LayoutRect(paintOffset + imageOffset, imageSize)), CompositeSourceOver, m_renderImage.shouldRespectImageOrientation()); |
+ errorPictureDrawn = true; |
+ } |
+ |
+ if (!m_renderImage.altText().isEmpty()) { |
+ const Font& font = m_renderImage.style()->font(); |
+ const FontMetrics& fontMetrics = font.fontMetrics(); |
+ LayoutUnit ascent = fontMetrics.ascent(); |
+ LayoutPoint textRectOrigin = paintOffset; |
+ textRectOrigin.move(leftBorder + leftPad + (RenderImage::paddingWidth / 2) - borderWidth, topBorder + topPad + (RenderImage::paddingHeight / 2) - borderWidth); |
+ LayoutPoint textOrigin(textRectOrigin.x(), textRectOrigin.y() + ascent); |
+ |
+ // Only draw the alt text if it'll fit within the content box, |
+ // and only if it fits above the error image. |
+ TextRun textRun = constructTextRun(&m_renderImage, font, m_renderImage.altText(), m_renderImage.style(), TextRun::AllowTrailingExpansion | TextRun::ForbidLeadingExpansion, DefaultTextRunFlags | RespectDirection); |
+ float textWidth = font.width(textRun); |
+ TextRunPaintInfo textRunPaintInfo(textRun); |
+ textRunPaintInfo.bounds = FloatRect(textRectOrigin, FloatSize(textWidth, fontMetrics.height())); |
+ context->setFillColor(m_renderImage.resolveColor(CSSPropertyColor)); |
+ if (textRun.direction() == RTL) { |
+ int availableWidth = cWidth - static_cast<int>(RenderImage::paddingWidth); |
+ textOrigin.move(availableWidth - ceilf(textWidth), 0); |
+ } |
+ if (errorPictureDrawn) { |
+ if (usableWidth >= textWidth && fontMetrics.height() <= imageOffset.height()) |
+ context->drawBidiText(font, textRunPaintInfo, textOrigin); |
+ } else if (usableWidth >= textWidth && usableHeight >= fontMetrics.height()) { |
+ context->drawBidiText(font, textRunPaintInfo, textOrigin); |
+ } |
+ } |
+ } |
+ } else if (m_renderImage.imageResource()->hasImage() && cWidth > 0 && cHeight > 0) { |
+ LayoutRect contentRect = m_renderImage.contentBoxRect(); |
+ contentRect.moveBy(paintOffset); |
+ LayoutRect paintRect = m_renderImage.replacedContentRect(); |
+ paintRect.moveBy(paintOffset); |
+ bool clip = !contentRect.contains(paintRect); |
+ if (clip) { |
+ context->save(); |
+ context->clip(contentRect); |
+ } |
+ |
+ paintIntoRect(context, paintRect); |
+ |
+ if (clip) |
+ context->restore(); |
+ } |
+} |
+ |
+void ImagePainter::paintIntoRect(GraphicsContext* context, const LayoutRect& rect) |
+{ |
+ IntRect alignedRect = pixelSnappedIntRect(rect); |
+ if (!m_renderImage.imageResource()->hasImage() || m_renderImage.imageResource()->errorOccurred() || alignedRect.width() <= 0 || alignedRect.height() <= 0) |
+ return; |
+ |
+ RefPtr<Image> img = m_renderImage.imageResource()->image(alignedRect.width(), alignedRect.height()); |
+ if (!img || img->isNull()) |
+ return; |
+ |
+ HTMLImageElement* imageElt = isHTMLImageElement(m_renderImage.node()) ? toHTMLImageElement(m_renderImage.node()) : 0; |
+ CompositeOperator compositeOperator = imageElt ? imageElt->compositeOperator() : CompositeSourceOver; |
+ Image* image = img.get(); |
+ InterpolationQuality interpolationQuality = BoxPainter::chooseInterpolationQuality(m_renderImage, context, image, image, alignedRect.size()); |
+ |
+ TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "PaintImage", "data", InspectorPaintImageEvent::data(m_renderImage)); |
+ // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing. |
+ InspectorInstrumentation::willPaintImage(&m_renderImage); |
+ InterpolationQuality previousInterpolationQuality = context->imageInterpolationQuality(); |
+ context->setImageInterpolationQuality(interpolationQuality); |
+ context->drawImage(image, alignedRect, compositeOperator, m_renderImage.shouldRespectImageOrientation()); |
+ context->setImageInterpolationQuality(previousInterpolationQuality); |
+ InspectorInstrumentation::didPaintImage(&m_renderImage); |
+} |
+ |
+} // namespace blink |