1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "config.h"
6#include "core/paint/SVGForeignObjectPainter.h"
7
8#include "core/paint/BlockPainter.h"
9#include "core/rendering/PaintInfo.h"
10#include "core/rendering/svg/RenderSVGForeignObject.h"
11#include "core/rendering/svg/SVGRenderSupport.h"
12#include "core/rendering/svg/SVGRenderingContext.h"
13#include "platform/graphics/GraphicsContextStateSaver.h"
14
15namespace blink {
16
17void SVGForeignObjectPainter::paint(PaintInfo& paintInfo)
18{
19    if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection)
20        return;
21
22    PaintInfo childPaintInfo(paintInfo);
23    GraphicsContextStateSaver stateSaver(*childPaintInfo.context);
24    childPaintInfo.applyTransform(m_renderSVGForeignObject.localTransform());
25
26    if (SVGRenderSupport::isOverflowHidden(&m_renderSVGForeignObject))
27        childPaintInfo.context->clip(m_renderSVGForeignObject.viewportRect());
28
29    SVGRenderingContext renderingContext;
30    bool continueRendering = true;
31    if (paintInfo.phase == PaintPhaseForeground) {
32        renderingContext.prepareToRenderSVGContent(&m_renderSVGForeignObject, childPaintInfo);
33        continueRendering = renderingContext.isRenderingPrepared();
34    }
35
36    if (continueRendering) {
37        // Paint all phases of FO elements atomically as though the FO element established its own stacking context.
38        bool preservePhase = paintInfo.phase == PaintPhaseSelection || paintInfo.phase == PaintPhaseTextClip;
39        const LayoutPoint childPoint = IntPoint();
40        childPaintInfo.phase = preservePhase ? paintInfo.phase : PaintPhaseBlockBackground;
41        BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
42        if (!preservePhase) {
43            childPaintInfo.phase = PaintPhaseChildBlockBackgrounds;
44            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
45            childPaintInfo.phase = PaintPhaseFloat;
46            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
47            childPaintInfo.phase = PaintPhaseForeground;
48            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
49            childPaintInfo.phase = PaintPhaseOutline;
50            BlockPainter(m_renderSVGForeignObject).paint(childPaintInfo, childPoint);
51        }
52    }
53}
54
55} // namespace blink
56