CSSCanvasValue.cpp [plain text]
#include "config.h"
#include "CSSCanvasValue.h"
#include "ImageBuffer.h"
#include "RenderObject.h"
namespace WebCore {
CSSCanvasValue::~CSSCanvasValue()
{
if (m_element)
m_element->setObserver(0);
}
String CSSCanvasValue::cssText() const
{
String result = "-webkit-canvas(";
result += m_name + ")";
return result;
}
void CSSCanvasValue::canvasChanged(HTMLCanvasElement*, const FloatRect& changedRect)
{
IntRect imageChangeRect = enclosingIntRect(changedRect);
RenderObjectSizeCountMap::const_iterator end = m_clients.end();
for (RenderObjectSizeCountMap::const_iterator curr = m_clients.begin(); curr != end; ++curr)
curr->first->imageChanged(static_cast<WrappedImagePtr>(this), &imageChangeRect);
}
void CSSCanvasValue::canvasResized(HTMLCanvasElement*)
{
RenderObjectSizeCountMap::const_iterator end = m_clients.end();
for (RenderObjectSizeCountMap::const_iterator curr = m_clients.begin(); curr != end; ++curr)
curr->first->imageChanged(static_cast<WrappedImagePtr>(this));
}
void CSSCanvasValue::canvasDestroyed(HTMLCanvasElement* element)
{
ASSERT(element == m_element);
if (element == m_element)
m_element = 0;
}
IntSize CSSCanvasValue::fixedSize(const RenderObject* renderer)
{
if (HTMLCanvasElement* elt = element(renderer->document()))
return IntSize(elt->width(), elt->height());
return IntSize();
}
HTMLCanvasElement* CSSCanvasValue::element(Document* document)
{
if (!m_element) {
m_element = document->getCSSCanvasElement(m_name);
if (!m_element)
return 0;
m_element->setObserver(this);
}
return m_element;
}
Image* CSSCanvasValue::image(RenderObject* renderer, const IntSize& )
{
ASSERT(m_clients.contains(renderer));
HTMLCanvasElement* elt = element(renderer->document());
if (!elt || !elt->buffer())
return 0;
return elt->buffer()->image();
}
}