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// 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/FramePainter.h"
#include "core/dom/DocumentMarkerController.h"
#include "core/frame/FrameView.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "core/inspector/InspectorTraceEvents.h"
#include "core/page/Chrome.h"
#include "core/page/ChromeClient.h"
#include "core/page/Page.h"
#include "core/paint/LayerPainter.h"
#include "core/paint/ScrollbarPainter.h"
#include "core/paint/TransformRecorder.h"
#include "core/rendering/RenderLayer.h"
#include "core/rendering/RenderView.h"
#include "platform/fonts/FontCache.h"
#include "platform/graphics/GraphicsContext.h"
#include "platform/graphics/paint/ClipRecorder.h"
#include "platform/scroll/ScrollbarTheme.h"
namespace blink {
bool FramePainter::s_inPaintContents = false;
void FramePainter::paint(GraphicsContext* context, const IntRect& rect)
{
m_frameView.notifyPageThatContentAreaWillPaint();
IntRect documentDirtyRect = rect;
IntRect visibleAreaWithoutScrollbars(m_frameView.location(), m_frameView.visibleContentRect().size());
documentDirtyRect.intersect(visibleAreaWithoutScrollbars);
if (!documentDirtyRect.isEmpty()) {
TransformRecorder transformRecorder(*context, m_frameView.renderView()->displayItemClient(),
AffineTransform::translation(m_frameView.x() - m_frameView.scrollX(), m_frameView.y() - m_frameView.scrollY()));
ClipRecorder recorder(m_frameView.renderView()->displayItemClient(), context, DisplayItem::ClipFrameToVisibleContentRect, m_frameView.visibleContentRect());
documentDirtyRect.moveBy(-m_frameView.location() + m_frameView.scrollPosition());
paintContents(context, documentDirtyRect);
}
calculateAndPaintOverhangAreas(context, rect);
// Now paint the scrollbars.
if (!m_frameView.scrollbarsSuppressed() && (m_frameView.horizontalScrollbar() || m_frameView.verticalScrollbar())) {
IntRect scrollViewDirtyRect = rect;
IntRect visibleAreaWithScrollbars(m_frameView.location(), m_frameView.visibleContentRect(IncludeScrollbars).size());
scrollViewDirtyRect.intersect(visibleAreaWithScrollbars);
scrollViewDirtyRect.moveBy(-m_frameView.location());
TransformRecorder transformRecorder(*context, m_frameView.renderView()->displayItemClient(),
AffineTransform::translation(m_frameView.x(), m_frameView.y()));
ClipRecorder recorder(m_frameView.renderView()->displayItemClient(), context, DisplayItem::ClipFrameScrollbars, IntRect(IntPoint(), visibleAreaWithScrollbars.size()));
paintScrollbars(context, scrollViewDirtyRect);
}
// Paint the panScroll Icon
if (m_frameView.drawPanScrollIcon())
m_frameView.paintPanScrollIcon(context);
}
void FramePainter::paintContents(GraphicsContext* context, const IntRect& rect)
{
Document* document = m_frameView.frame().document();
#ifndef NDEBUG
bool fillWithRed;
if (document->printing())
fillWithRed = false; // Printing, don't fill with red (can't remember why).
else if (m_frameView.frame().owner())
fillWithRed = false; // Subframe, don't fill with red.
else if (m_frameView.isTransparent())
fillWithRed = false; // Transparent, don't fill with red.
else if (m_frameView.paintBehavior() & PaintBehaviorSelectionOnly)
fillWithRed = false; // Selections are transparent, don't fill with red.
else if (m_frameView.nodeToDraw())
fillWithRed = false; // Element images are transparent, don't fill with red.
else
fillWithRed = true;
if (fillWithRed)
context->fillRect(rect, Color(0xFF, 0, 0));
#endif
RenderView* renderView = m_frameView.renderView();
if (!renderView) {
WTF_LOG_ERROR("called FramePainter::paint with nil renderer");
return;
}
RELEASE_ASSERT(!m_frameView.needsLayout());
ASSERT(document->lifecycle().state() >= DocumentLifecycle::CompositingClean);
TRACE_EVENT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "Paint", "data", InspectorPaintEvent::data(renderView, rect, 0));
// FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
InspectorInstrumentation::willPaint(renderView, 0);
bool isTopLevelPainter = !s_inPaintContents;
s_inPaintContents = true;
FontCachePurgePreventer fontCachePurgePreventer;
PaintBehavior oldPaintBehavior = m_frameView.paintBehavior();
if (FrameView* parentView = m_frameView.parentFrameView()) {
if (parentView->paintBehavior() & PaintBehaviorFlattenCompositingLayers)
m_frameView.setPaintBehavior(m_frameView.paintBehavior() | PaintBehaviorFlattenCompositingLayers);
}
if (m_frameView.paintBehavior() == PaintBehaviorNormal)
document->markers().invalidateRenderedRectsForMarkersInRect(rect);
if (document->printing())
m_frameView.setPaintBehavior(m_frameView.paintBehavior() | PaintBehaviorFlattenCompositingLayers);
ASSERT(!m_frameView.isPainting());
m_frameView.setIsPainting(true);
// m_frameView.nodeToDraw() is used to draw only one element (and its descendants)
RenderObject* renderer = m_frameView.nodeToDraw() ? m_frameView.nodeToDraw()->renderer() : 0;
RenderLayer* rootLayer = renderView->layer();
#if ENABLE(ASSERT)
renderView->assertSubtreeIsLaidOut();
RenderObject::SetLayoutNeededForbiddenScope forbidSetNeedsLayout(*rootLayer->renderer());
#endif
LayerPainter layerPainter(*rootLayer);
float deviceScaleFactor = blink::deviceScaleFactor(rootLayer->renderer()->frame());
context->setDeviceScaleFactor(deviceScaleFactor);
layerPainter.paint(context, rect, m_frameView.paintBehavior(), renderer);
if (rootLayer->containsDirtyOverlayScrollbars())
layerPainter.paintOverlayScrollbars(context, rect, m_frameView.paintBehavior(), renderer);
m_frameView.setIsPainting(false);
m_frameView.setPaintBehavior(oldPaintBehavior);
m_frameView.setLastPaintTime(currentTime());
// Regions may have changed as a result of the visibility/z-index of element changing.
if (document->annotatedRegionsDirty())
m_frameView.updateAnnotatedRegions();
if (isTopLevelPainter) {
// Everything that happens after paintContents completions is considered
// to be part of the next frame.
m_frameView.setCurrentFrameTimeStamp(currentTime());
s_inPaintContents = false;
}
InspectorInstrumentation::didPaint(renderView, 0, context, rect);
}
void FramePainter::paintScrollbars(GraphicsContext* context, const IntRect& rect)
{
if (m_frameView.horizontalScrollbar() && !m_frameView.layerForHorizontalScrollbar())
paintScrollbar(context, m_frameView.horizontalScrollbar(), rect);
if (m_frameView.verticalScrollbar() && !m_frameView.layerForVerticalScrollbar())
paintScrollbar(context, m_frameView.verticalScrollbar(), rect);
if (m_frameView.layerForScrollCorner())
return;
// FIXME: This is wrong. scroll corners are currently painted in the local space of the scroll corner,
// not the space of the frame. Either change scroll corners to paint in the frame's coordinate space,
// or adjust for the location of the scroll corner.
paintScrollCorner(context, m_frameView.scrollCornerRect());
}
void FramePainter::paintScrollCorner(GraphicsContext* context, const IntRect& cornerRect)
{
if (m_frameView.scrollCorner()) {
bool needsBackground = m_frameView.frame().isMainFrame();
if (needsBackground)
context->fillRect(cornerRect, m_frameView.baseBackgroundColor());
ScrollbarPainter::paintIntoRect(m_frameView.scrollCorner(), context, cornerRect.location(), cornerRect);
return;
}
ScrollbarTheme::theme()->paintScrollCorner(context, cornerRect);
}
void FramePainter::paintScrollbar(GraphicsContext* context, Scrollbar* bar, const IntRect& rect)
{
bool needsBackground = bar->isCustomScrollbar() && m_frameView.frame().isMainFrame();
if (needsBackground) {
IntRect toFill = bar->frameRect();
toFill.intersect(rect);
context->fillRect(toFill, m_frameView.baseBackgroundColor());
}
bar->paint(context, rect);
}
void FramePainter::paintOverhangAreas(GraphicsContext* context, const IntRect& horizontalOverhangArea, const IntRect& verticalOverhangArea, const IntRect& dirtyRect)
{
if (m_frameView.frame().document()->printing())
return;
if (m_frameView.frame().isMainFrame()) {
if (m_frameView.frame().page()->chrome().client().paintCustomOverhangArea(context, horizontalOverhangArea, verticalOverhangArea, dirtyRect))
return;
}
paintOverhangAreasInternal(context, horizontalOverhangArea, verticalOverhangArea, dirtyRect);
}
void FramePainter::paintOverhangAreasInternal(GraphicsContext* context, const IntRect& horizontalOverhangRect, const IntRect& verticalOverhangRect, const IntRect& dirtyRect)
{
ScrollbarTheme::theme()->paintOverhangBackground(context, horizontalOverhangRect, verticalOverhangRect, dirtyRect);
ScrollbarTheme::theme()->paintOverhangShadows(context, m_frameView.scrollOffset(), horizontalOverhangRect, verticalOverhangRect, dirtyRect);
}
void FramePainter::calculateAndPaintOverhangAreas(GraphicsContext* context, const IntRect& dirtyRect)
{
IntRect horizontalOverhangRect;
IntRect verticalOverhangRect;
m_frameView.calculateOverhangAreasForPainting(horizontalOverhangRect, verticalOverhangRect);
if (dirtyRect.intersects(horizontalOverhangRect) || dirtyRect.intersects(verticalOverhangRect))
paintOverhangAreas(context, horizontalOverhangRect, verticalOverhangRect, dirtyRect);
}
} // namespace blink
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