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#define LOG_TAG "PictureLayerContent"
#define LOG_NDEBUG 1
#include "config.h"
#include "PictureLayerContent.h"
#include "AndroidLog.h"
#include "InspectorCanvas.h"
#include "SkPicture.h"
namespace WebCore {
PictureLayerContent::PictureLayerContent(SkPicture* picture)
: m_picture(picture)
, m_checkedContent(false)
, m_hasText(true)
{
SkSafeRef(m_picture);
}
PictureLayerContent::PictureLayerContent(const PictureLayerContent& content)
: m_picture(content.m_picture)
, m_checkedContent(content.m_checkedContent)
, m_hasText(content.m_hasText)
{
SkSafeRef(m_picture);
}
PictureLayerContent::~PictureLayerContent()
{
SkSafeUnref(m_picture);
}
int PictureLayerContent::width()
{
if (!m_picture)
return 0;
return m_picture->width();
}
int PictureLayerContent::height()
{
if (!m_picture)
return 0;
return m_picture->height();
}
void PictureLayerContent::checkForOptimisations()
{
if (!m_checkedContent)
maxZoomScale(); // for now only check the maximum scale for painting
}
float PictureLayerContent::maxZoomScale()
{
if (m_checkedContent)
return m_hasText ? 1e6 : 1.0;
// Let's check if we have text or not. If we don't, we can limit
// ourselves to scale 1!
InspectorBounder inspectorBounder;
InspectorCanvas checker(&inspectorBounder, m_picture);
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config,
m_picture->width(),
m_picture->height());
checker.setBitmapDevice(bitmap);
checker.drawPicture(*m_picture);
m_hasText = checker.hasText();
if (!checker.hasContent()) {
// no content to draw, discard picture so UI / tile generation
// doesn't bother with it
SkSafeUnref(m_picture);
m_picture = 0;
}
m_checkedContent = true;
return m_hasText ? 1e6 : 1.0;
}
void PictureLayerContent::draw(SkCanvas* canvas)
{
if (!m_picture)
return;
TRACE_METHOD();
android::Mutex::Autolock lock(m_drawLock);
SkRect r = SkRect::MakeWH(width(), height());
canvas->clipRect(r);
canvas->drawPicture(*m_picture);
}
void PictureLayerContent::serialize(SkWStream* stream)
{
if (!m_picture)
return;
m_picture->serialize(stream);
}
} // namespace WebCore
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