#include "config.h"
#include "Image.h"
#include "BitmapImage.h"
#include "GraphicsContext.h"
#include <cairo.h>
#include <cairo-win32.h>
#include <windows.h>
#include "PlatformString.h"
namespace WebCore {
PassRefPtr<BitmapImage> BitmapImage::create(HBITMAP hBitmap)
{
DIBSECTION dibSection;
if (!GetObject(hBitmap, sizeof(DIBSECTION), &dibSection))
return 0;
ASSERT(dibSection.dsBm.bmBitsPixel == 32);
if (dibSection.dsBm.bmBitsPixel != 32)
return 0;
ASSERT(dibSection.dsBm.bmBits);
if (!dibSection.dsBm.bmBits)
return 0;
cairo_surface_t* image = cairo_win32_surface_create_with_dib (CAIRO_FORMAT_ARGB32, dibSection.dsBm.bmWidth, dibSection.dsBm.bmHeight);
return adoptRef(new BitmapImage(image));
}
bool BitmapImage::getHBITMAPOfSize(HBITMAP bmp, LPSIZE size)
{
ASSERT(bmp);
BITMAP bmpInfo;
GetObject(bmp, sizeof(BITMAP), &bmpInfo);
if (bmpInfo.bmBitsPixel == 32) {
int bufferSize = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
memset(bmpInfo.bmBits, 255, bufferSize);
}
cairo_surface_t* image = cairo_image_surface_create_for_data((unsigned char*)bmpInfo.bmBits,
CAIRO_FORMAT_ARGB32,
bmpInfo.bmWidth,
bmpInfo.bmHeight,
bmpInfo.bmWidthBytes);
cairo_t* targetRef = cairo_create(image);
cairo_surface_destroy(image);
GraphicsContext gc(targetRef);
IntSize imageSize = BitmapImage::size();
if (size)
drawFrameMatchingSourceSize(&gc, FloatRect(0.0f, 0.0f, bmpInfo.bmWidth, bmpInfo.bmHeight), IntSize(*size), DeviceColorSpace, CompositeCopy);
else
draw(&gc, FloatRect(0.0f, 0.0f, bmpInfo.bmWidth, bmpInfo.bmHeight), FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), DeviceColorSpace, CompositeCopy);
cairo_destroy(targetRef);
return true;
}
void BitmapImage::drawFrameMatchingSourceSize(GraphicsContext* ctxt, const FloatRect& dstRect, const IntSize& srcSize, ColorSpace styleColorSpace, CompositeOperator compositeOp)
{
size_t frames = frameCount();
for (size_t i = 0; i < frames; ++i) {
cairo_surface_t* image = frameAtIndex(i);
if (cairo_image_surface_get_height(image) == static_cast<size_t>(srcSize.height()) && cairo_image_surface_get_width(image) == static_cast<size_t>(srcSize.width())) {
size_t currentFrame = m_currentFrame;
m_currentFrame = i;
draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, srcSize.width(), srcSize.height()), DeviceColorSpace, compositeOp);
m_currentFrame = currentFrame;
return;
}
}
IntSize imageSize = BitmapImage::size();
draw(ctxt, dstRect, FloatRect(0.0f, 0.0f, imageSize.width(), imageSize.height()), DeviceColorSpace, compositeOp);
}
}