| /* |
| * Copyright (C) 2012 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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/chromium/OpaqueRectTrackingContentLayerDelegate.h" |
| |
| #include "core/platform/graphics/GraphicsContext.h" |
| #include "platform/EventTracer.h" |
| #include "platform/geometry/IntRect.h" |
| #include "platform/transforms/AffineTransform.h" |
| #include "public/platform/WebFloatRect.h" |
| #include "public/platform/WebRect.h" |
| |
| using WebKit::WebFloatRect; |
| using WebKit::WebRect; |
| |
| namespace WebCore { |
| |
| OpaqueRectTrackingContentLayerDelegate::OpaqueRectTrackingContentLayerDelegate(GraphicsContextPainter* painter) |
| : m_painter(painter) |
| , m_opaque(false) |
| { |
| } |
| |
| OpaqueRectTrackingContentLayerDelegate::~OpaqueRectTrackingContentLayerDelegate() |
| { |
| } |
| |
| void OpaqueRectTrackingContentLayerDelegate::paintContents(SkCanvas* canvas, const WebRect& clip, bool canPaintLCDText, WebFloatRect& opaque) |
| { |
| GraphicsContext context(canvas); |
| context.setTrackOpaqueRegion(!m_opaque); |
| context.setCertainlyOpaque(m_opaque); |
| context.setShouldSmoothFonts(canPaintLCDText); |
| |
| if (*EventTracer::getTraceCategoryEnabledFlag(TRACE_DISABLED_BY_DEFAULT("blink.graphics_context_annotations"))) |
| context.setAnnotationMode(AnnotateAll); |
| |
| // Record transform prior to painting, as all opaque tracking will be |
| // relative to this current value. |
| AffineTransform canvasToContentTransform = context.getCTM().inverse(); |
| |
| m_painter->paint(context, clip); |
| |
| // Transform tracked opaque paints back to our layer's content space. |
| ASSERT(canvasToContentTransform.isInvertible()); |
| ASSERT(canvasToContentTransform.preservesAxisAlignment()); |
| opaque = canvasToContentTransform.mapRect(context.opaqueRegion().asRect()); |
| } |
| |
| } |