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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
* Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "core/rendering/RenderEmbeddedObject.h"
#include "core/CSSValueKeywords.h"
#include "core/HTMLNames.h"
#include "core/frame/LocalFrame.h"
#include "core/html/HTMLIFrameElement.h"
#include "core/html/HTMLPlugInElement.h"
#include "core/page/Page.h"
#include "core/frame/Settings.h"
#include "core/plugins/PluginView.h"
#include "core/rendering/PaintInfo.h"
#include "core/rendering/RenderTheme.h"
#include "core/rendering/RenderView.h"
#include "platform/fonts/Font.h"
#include "platform/fonts/FontSelector.h"
#include "platform/graphics/GraphicsContextStateSaver.h"
#include "platform/graphics/Path.h"
#include "platform/text/PlatformLocale.h"
#include "platform/text/TextRun.h"
namespace WebCore {
using namespace HTMLNames;
static const float replacementTextRoundedRectHeight = 18;
static const float replacementTextRoundedRectLeftRightTextMargin = 6;
static const float replacementTextRoundedRectOpacity = 0.20f;
static const float replacementTextRoundedRectRadius = 5;
static const float replacementTextTextOpacity = 0.55f;
RenderEmbeddedObject::RenderEmbeddedObject(Element* element)
: RenderPart(element)
, m_showsUnavailablePluginIndicator(false)
{
view()->frameView()->setIsVisuallyNonEmpty();
}
RenderEmbeddedObject::~RenderEmbeddedObject()
{
}
LayerType RenderEmbeddedObject::layerTypeRequired() const
{
// This can't just use RenderPart::layerTypeRequired, because RenderLayerCompositor
// doesn't loop through RenderEmbeddedObjects the way it does frames in order
// to update the self painting bit on their RenderLayer.
// Also, unlike iframes, embeds don't used the usesCompositing bit on RenderView
// in requiresAcceleratedCompositing.
if (requiresAcceleratedCompositing())
return NormalLayer;
return RenderPart::layerTypeRequired();
}
static String unavailablePluginReplacementText(Node* node, RenderEmbeddedObject::PluginUnavailabilityReason pluginUnavailabilityReason)
{
Locale& locale = node ? toElement(node)->locale() : Locale::defaultLocale();
switch (pluginUnavailabilityReason) {
case RenderEmbeddedObject::PluginMissing:
return locale.queryString(blink::WebLocalizedString::MissingPluginText);
case RenderEmbeddedObject::PluginBlockedByContentSecurityPolicy:
return locale.queryString(blink::WebLocalizedString::BlockedPluginText);
}
ASSERT_NOT_REACHED();
return String();
}
void RenderEmbeddedObject::setPluginUnavailabilityReason(PluginUnavailabilityReason pluginUnavailabilityReason)
{
ASSERT(!m_showsUnavailablePluginIndicator);
m_showsUnavailablePluginIndicator = true;
m_pluginUnavailabilityReason = pluginUnavailabilityReason;
m_unavailablePluginReplacementText = unavailablePluginReplacementText(node(), pluginUnavailabilityReason);
}
bool RenderEmbeddedObject::showsUnavailablePluginIndicator() const
{
return m_showsUnavailablePluginIndicator;
}
void RenderEmbeddedObject::paintContents(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
Element* element = toElement(node());
if (!isHTMLPlugInElement(element))
return;
RenderPart::paintContents(paintInfo, paintOffset);
}
void RenderEmbeddedObject::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (showsUnavailablePluginIndicator()) {
RenderReplaced::paint(paintInfo, paintOffset);
return;
}
RenderPart::paint(paintInfo, paintOffset);
}
void RenderEmbeddedObject::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (!showsUnavailablePluginIndicator())
return;
if (paintInfo.phase == PaintPhaseSelection)
return;
GraphicsContext* context = paintInfo.context;
if (context->paintingDisabled())
return;
FloatRect contentRect;
Path path;
FloatRect replacementTextRect;
Font font;
TextRun run("");
float textWidth;
if (!getReplacementTextGeometry(paintOffset, contentRect, path, replacementTextRect, font, run, textWidth))
return;
GraphicsContextStateSaver stateSaver(*context);
context->clip(contentRect);
context->setAlphaAsFloat(replacementTextRoundedRectOpacity);
context->setFillColor(Color::white);
context->fillPath(path);
const FontMetrics& fontMetrics = font.fontMetrics();
float labelX = roundf(replacementTextRect.location().x() + (replacementTextRect.size().width() - textWidth) / 2);
float labelY = roundf(replacementTextRect.location().y() + (replacementTextRect.size().height() - fontMetrics.height()) / 2 + fontMetrics.ascent());
TextRunPaintInfo runInfo(run);
runInfo.bounds = replacementTextRect;
context->setAlphaAsFloat(replacementTextTextOpacity);
context->setFillColor(Color::black);
context->drawBidiText(font, runInfo, FloatPoint(labelX, labelY));
}
bool RenderEmbeddedObject::getReplacementTextGeometry(const LayoutPoint& accumulatedOffset, FloatRect& contentRect, Path& path, FloatRect& replacementTextRect, Font& font, TextRun& run, float& textWidth) const
{
contentRect = contentBoxRect();
contentRect.moveBy(roundedIntPoint(accumulatedOffset));
FontDescription fontDescription;
RenderTheme::theme().systemFont(CSSValueWebkitSmallControl, fontDescription);
fontDescription.setWeight(FontWeightBold);
Settings* settings = document().settings();
ASSERT(settings);
if (!settings)
return false;
fontDescription.setComputedSize(fontDescription.specifiedSize());
font = Font(fontDescription);
font.update(nullptr);
run = TextRun(m_unavailablePluginReplacementText);
textWidth = font.width(run);
replacementTextRect.setSize(FloatSize(textWidth + replacementTextRoundedRectLeftRightTextMargin * 2, replacementTextRoundedRectHeight));
float x = (contentRect.size().width() / 2 - replacementTextRect.size().width() / 2) + contentRect.location().x();
float y = (contentRect.size().height() / 2 - replacementTextRect.size().height() / 2) + contentRect.location().y();
replacementTextRect.setLocation(FloatPoint(x, y));
path.addRoundedRect(replacementTextRect, FloatSize(replacementTextRoundedRectRadius, replacementTextRoundedRectRadius));
return true;
}
void RenderEmbeddedObject::layout()
{
ASSERT(needsLayout());
updateLogicalWidth();
updateLogicalHeight();
m_overflow.clear();
addVisualEffectOverflow();
updateLayerTransformAfterLayout();
if (!widget() && frameView())
frameView()->addWidgetToUpdate(*this);
clearNeedsLayout();
}
bool RenderEmbeddedObject::scroll(ScrollDirection direction, ScrollGranularity granularity, float)
{
return false;
}
CompositingReasons RenderEmbeddedObject::additionalCompositingReasons(CompositingTriggerFlags triggers) const
{
if (requiresAcceleratedCompositing())
return CompositingReasonPlugin;
return CompositingReasonNone;
}
RenderBox* RenderEmbeddedObject::embeddedContentBox() const
{
if (!node() || !widget() || !widget()->isFrameView())
return 0;
return toFrameView(widget())->embeddedContentBox();
}
}
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