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/*
* 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 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 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"
#if USE(ACCELERATED_COMPOSITING)
#include "CCScrollbarLayerImpl.h"
#include "cc/CCQuadSink.h"
#include "cc/CCScrollbarAnimationController.h"
#include "cc/CCTextureDrawQuad.h"
using WebKit::WebRect;
using WebKit::WebScrollbar;
namespace WebCore {
PassOwnPtr<CCScrollbarLayerImpl> CCScrollbarLayerImpl::create(int id)
{
return adoptPtr(new CCScrollbarLayerImpl(id));
}
CCScrollbarLayerImpl::CCScrollbarLayerImpl(int id)
: CCLayerImpl(id)
, m_scrollbar(this)
, m_backTrackResourceId(0)
, m_foreTrackResourceId(0)
, m_thumbResourceId(0)
, m_scrollbarOverlayStyle(WebScrollbar::ScrollbarOverlayStyleDefault)
, m_orientation(WebScrollbar::Horizontal)
, m_controlSize(WebScrollbar::RegularScrollbar)
, m_pressedPart(WebScrollbar::NoPart)
, m_hoveredPart(WebScrollbar::NoPart)
, m_isScrollableAreaActive(false)
, m_isScrollViewScrollbar(false)
, m_enabled(false)
, m_isCustomScrollbar(false)
, m_isOverlayScrollbar(false)
{
}
void CCScrollbarLayerImpl::setScrollbarGeometry(PassOwnPtr<WebKit::WebScrollbarThemeGeometry> geometry)
{
m_geometry = geometry;
}
void CCScrollbarLayerImpl::setScrollbarData(const WebScrollbar* scrollbar)
{
m_scrollbarOverlayStyle = scrollbar->scrollbarOverlayStyle();
m_orientation = scrollbar->orientation();
m_controlSize = scrollbar->controlSize();
m_pressedPart = scrollbar->pressedPart();
m_hoveredPart = scrollbar->hoveredPart();
m_isScrollableAreaActive = scrollbar->isScrollableAreaActive();
m_isScrollViewScrollbar = scrollbar->isScrollViewScrollbar();
m_enabled = scrollbar->enabled();
m_isCustomScrollbar = scrollbar->isCustomScrollbar();
m_isOverlayScrollbar = scrollbar->isOverlay();
scrollbar->getTickmarks(m_tickmarks);
}
static FloatRect toUVRect(const WebRect& r, const IntRect& bounds)
{
return FloatRect(static_cast<float>(r.x) / bounds.width(), static_cast<float>(r.y) / bounds.height(),
static_cast<float>(r.width) / bounds.width(), static_cast<float>(r.height) / bounds.height());
}
void CCScrollbarLayerImpl::appendQuads(CCQuadSink& quadList, const CCSharedQuadState* sharedQuadState, bool&)
{
bool premultipledAlpha = false;
bool flipped = false;
FloatRect uvRect(0, 0, 1, 1);
IntRect boundsRect(IntPoint(), contentBounds());
WebRect thumbRect, backTrackRect, foreTrackRect;
m_geometry->splitTrack(&m_scrollbar, m_geometry->trackRect(&m_scrollbar), backTrackRect, thumbRect, foreTrackRect);
if (!m_geometry->hasThumb(&m_scrollbar))
thumbRect = WebRect();
if (m_thumbResourceId && !thumbRect.isEmpty()) {
OwnPtr<CCTextureDrawQuad> quad = CCTextureDrawQuad::create(sharedQuadState, IntRect(thumbRect.x, thumbRect.y, thumbRect.width, thumbRect.height), m_thumbResourceId, premultipledAlpha, uvRect, flipped);
quad->setNeedsBlending();
quadList.append(quad.release());
}
if (!m_backTrackResourceId)
return;
// We only paint the track in two parts if we were given a texture for the forward track part.
if (m_foreTrackResourceId && !foreTrackRect.isEmpty())
quadList.append(CCTextureDrawQuad::create(sharedQuadState, IntRect(foreTrackRect.x, foreTrackRect.y, foreTrackRect.width, foreTrackRect.height), m_foreTrackResourceId, premultipledAlpha, toUVRect(foreTrackRect, boundsRect), flipped));
// Order matters here: since the back track texture is being drawn to the entire contents rect, we must append it after the thumb and
// fore track quads. The back track texture contains (and displays) the buttons.
if (!boundsRect.isEmpty())
quadList.append(CCTextureDrawQuad::create(sharedQuadState, IntRect(boundsRect), m_backTrackResourceId, premultipledAlpha, uvRect, flipped));
}
void CCScrollbarLayerImpl::didLoseContext()
{
m_backTrackResourceId = 0;
m_foreTrackResourceId = 0;
m_thumbResourceId = 0;
}
bool CCScrollbarLayerImpl::CCScrollbar::isOverlay() const
{
return m_owner->m_isOverlayScrollbar;
}
int CCScrollbarLayerImpl::CCScrollbar::value() const
{
return m_owner->m_currentPos;
}
WebKit::WebPoint CCScrollbarLayerImpl::CCScrollbar::location() const
{
return WebKit::WebPoint();
}
WebKit::WebSize CCScrollbarLayerImpl::CCScrollbar::size() const
{
return WebKit::WebSize(m_owner->contentBounds().width(), m_owner->contentBounds().height());
}
bool CCScrollbarLayerImpl::CCScrollbar::enabled() const
{
return m_owner->m_enabled;
}
int CCScrollbarLayerImpl::CCScrollbar::maximum() const
{
return m_owner->m_maximum;
}
int CCScrollbarLayerImpl::CCScrollbar::totalSize() const
{
return m_owner->m_totalSize;
}
bool CCScrollbarLayerImpl::CCScrollbar::isScrollViewScrollbar() const
{
return m_owner->m_isScrollViewScrollbar;
}
bool CCScrollbarLayerImpl::CCScrollbar::isScrollableAreaActive() const
{
return m_owner->m_isScrollableAreaActive;
}
void CCScrollbarLayerImpl::CCScrollbar::getTickmarks(WebKit::WebVector<WebRect>& tickmarks) const
{
tickmarks = m_owner->m_tickmarks;
}
WebScrollbar::ScrollbarControlSize CCScrollbarLayerImpl::CCScrollbar::controlSize() const
{
return m_owner->m_controlSize;
}
WebScrollbar::ScrollbarPart CCScrollbarLayerImpl::CCScrollbar::pressedPart() const
{
return m_owner->m_pressedPart;
}
WebScrollbar::ScrollbarPart CCScrollbarLayerImpl::CCScrollbar::hoveredPart() const
{
return m_owner->m_hoveredPart;
}
WebScrollbar::ScrollbarOverlayStyle CCScrollbarLayerImpl::CCScrollbar::scrollbarOverlayStyle() const
{
return m_owner->m_scrollbarOverlayStyle;
}
WebScrollbar::Orientation CCScrollbarLayerImpl::CCScrollbar::orientation() const
{
return m_owner->m_orientation;
}
bool CCScrollbarLayerImpl::CCScrollbar::isCustomScrollbar() const
{
return m_owner->m_isCustomScrollbar;
}
}
#endif // USE(ACCELERATED_COMPOSITING)
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