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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/PartPainter.h"
#include "core/paint/BoxPainter.h"
#include "core/paint/GraphicsContextAnnotator.h"
#include "core/paint/ScrollableAreaPainter.h"
#include "core/rendering/PaintInfo.h"
#include "core/rendering/RenderLayer.h"
#include "core/rendering/RenderPart.h"
namespace blink {
void PartPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
ANNOTATE_GRAPHICS_CONTEXT(paintInfo, &m_renderPart);
if (!m_renderPart.shouldPaint(paintInfo, paintOffset))
return;
LayoutPoint adjustedPaintOffset = paintOffset + m_renderPart.location();
if (m_renderPart.hasBoxDecorationBackground() && (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection))
BoxPainter(m_renderPart).paintBoxDecorationBackground(paintInfo, adjustedPaintOffset);
if (paintInfo.phase == PaintPhaseMask) {
BoxPainter(m_renderPart).paintMask(paintInfo, adjustedPaintOffset);
return;
}
if ((paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) && m_renderPart.style()->hasOutline())
ObjectPainter(m_renderPart).paintOutline(paintInfo, LayoutRect(adjustedPaintOffset, m_renderPart.size()));
if (paintInfo.phase != PaintPhaseForeground)
return;
if (m_renderPart.style()->hasBorderRadius()) {
LayoutRect borderRect = LayoutRect(adjustedPaintOffset, m_renderPart.size());
if (borderRect.isEmpty())
return;
// Push a clip if we have a border radius, since we want to round the foreground content that gets painted.
paintInfo.context->save();
FloatRoundedRect roundedInnerRect = m_renderPart.style()->getRoundedInnerBorderFor(borderRect,
m_renderPart.paddingTop() + m_renderPart.borderTop(), m_renderPart.paddingBottom() + m_renderPart.borderBottom(), m_renderPart.paddingLeft() + m_renderPart.borderLeft(), m_renderPart.paddingRight() + m_renderPart.borderRight(), true, true);
BoxPainter::clipRoundedInnerRect(paintInfo.context, borderRect, roundedInnerRect);
}
if (m_renderPart.widget())
m_renderPart.paintContents(paintInfo, paintOffset);
if (m_renderPart.style()->hasBorderRadius())
paintInfo.context->restore();
// Paint a partially transparent wash over selected widgets.
if (m_renderPart.isSelected() && !m_renderPart.document().printing()) {
LayoutRect rect = m_renderPart.localSelectionRect();
rect.moveBy(adjustedPaintOffset);
paintInfo.context->fillRect(pixelSnappedIntRect(rect), m_renderPart.selectionBackgroundColor());
}
if (m_renderPart.canResize())
ScrollableAreaPainter(*m_renderPart.layer()->scrollableArea()).paintResizer(paintInfo.context, roundedIntPoint(adjustedPaintOffset), paintInfo.rect);
}
void PartPainter::paintContents(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutPoint adjustedPaintOffset = paintOffset + m_renderPart.location();
Widget* widget = m_renderPart.widget();
RELEASE_ASSERT(widget);
// Tell the widget to paint now. This is the only time the widget is allowed
// to paint itself. That way it will composite properly with z-indexed layers.
IntPoint widgetLocation = widget->frameRect().location();
IntPoint paintLocation(roundToInt(adjustedPaintOffset.x() + m_renderPart.borderLeft() + m_renderPart.paddingLeft()),
roundToInt(adjustedPaintOffset.y() + m_renderPart.borderTop() + m_renderPart.paddingTop()));
IntRect paintRect = paintInfo.rect;
IntSize widgetPaintOffset = paintLocation - widgetLocation;
// When painting widgets into compositing layers, tx and ty are relative to the enclosing compositing layer,
// not the root. In this case, shift the CTM and adjust the paintRect to be root-relative to fix plug-in drawing.
if (!widgetPaintOffset.isZero()) {
paintInfo.context->translate(widgetPaintOffset.width(), widgetPaintOffset.height());
paintRect.move(-widgetPaintOffset);
}
widget->paint(paintInfo.context, paintRect);
if (!widgetPaintOffset.isZero())
paintInfo.context->translate(-widgetPaintOffset.width(), -widgetPaintOffset.height());
}
} // namespace blink
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