void ChunkedUpdateDrawingAreaProxy::drawUpdateChunkIntoBackingStore(UpdateChunk* updateChunk)
{
ensureBackingStore();
OwnPtr<HDC> updateChunkBitmapDC(::CreateCompatibleDC(m_backingStoreDC.get()));
// Create a bitmap.
BitmapInfo bitmapInfo = BitmapInfo::createBottomUp(updateChunk->rect().size());
// Duplicate the update chunk handle.
HANDLE updateChunkHandle;
BOOL result = ::DuplicateHandle(m_webView->page()->process()->processIdentifier(), updateChunk->memory(),
::GetCurrentProcess(), &updateChunkHandle, STANDARD_RIGHTS_REQUIRED | FILE_MAP_READ | FILE_MAP_WRITE, false, DUPLICATE_CLOSE_SOURCE);
void* pixels = 0;
OwnPtr<HBITMAP> hBitmap(::CreateDIBSection(0, &bitmapInfo, DIB_RGB_COLORS, &pixels, updateChunkHandle, 0));
::SelectObject(updateChunkBitmapDC.get(), hBitmap.get());
// BitBlt from the UpdateChunk to the backing store.
::BitBlt(m_backingStoreDC.get(), updateChunk->rect().x(), updateChunk->rect().y(), updateChunk->rect().width(), updateChunk->rect().height(), updateChunkBitmapDC.get(), 0, 0, SRCCOPY);
// FIXME: We should not do this here.
::CloseHandle(updateChunkHandle);
// Invalidate the WebView's HWND.
RECT rect = updateChunk->rect();
::InvalidateRect(m_webView->window(), &rect, false);
}
void ChunkedUpdateDrawingAreaProxy::drawUpdateChunkIntoBackingStore(UpdateChunk* updateChunk)
{
ensureBackingStore();
RefPtr<cairo_surface_t> pixmap(updateChunk->createImage());
if (cairo_surface_status(pixmap.get()) != CAIRO_STATUS_SUCCESS)
return;
const IntRect& updateChunkRect = updateChunk->rect();
RefPtr<cairo_t> cr = cairo_create(m_backingStoreImage);
cairo_set_source_surface(cr.get(), pixmap.get(), updateChunkRect.x(), updateChunkRect.y());
cairo_paint(cr.get());
gtk_widget_queue_draw_area(m_webView->window(), updateChunkRect.x(), updateChunkRect.y(),
updateChunkRect.width(), updateChunkRect.height());
}
