RenderedBitmap *ChmEngineImpl::CreateThumbnail(SizeI size)
{
RenderedBitmap *bmp = NULL;
// We render twice the size of thumbnail and scale it down
RectI area(0, 0, size.dx * 2, size.dy * 2);
// reusing WC_STATIC. I don't think exact class matters (WndProc
// will be taken over by HtmlWindow anyway) but it can't be NULL.
int winDx = area.dx + GetSystemMetrics(SM_CXVSCROLL);
int winDy = area.dy + GetSystemMetrics(SM_CYHSCROLL);
HWND hwnd = CreateWindow(WC_STATIC, L"BrowserCapture", WS_POPUP,
0, 0, winDx, winDy, NULL, NULL, NULL, NULL);
if (!hwnd)
return NULL;
#if 0 // when debugging set to 1 to see the window
ShowWindow(hwnd, SW_SHOW);
#endif
SetParentHwnd(hwnd);
DisplayPage(1);
if (!htmlWindow || !htmlWindow->WaitUntilLoaded(5 * 1000))
goto Exit;
HBITMAP hbmp = htmlWindow->TakeScreenshot(area, size);
if (!hbmp)
goto Exit;
bmp = new RenderedBitmap(hbmp, size);
Exit:
DestroyWindow(hwnd);
return bmp;
}
virtual void OnDocumentComplete(const WCHAR *url) {
if (url && *url == '/')
url++;
if (str::Eq(url, homeUrl)) {
RectI area(0, 0, size.dx * 2, size.dy * 2);
HBITMAP hbmp = hw->TakeScreenshot(area, size);
if (hbmp) {
RenderedBitmap *bmp = new RenderedBitmap(hbmp, size);
tnCb->SaveThumbnail(bmp);
tnCb = NULL;
}
uitask::Post(this);
}
}
virtual void OnDocumentComplete(const WCHAR *url) {
if (url && *url == '/')
url++;
if (str::Eq(url, homeUrl)) {
RectI area(0, 0, size.dx * 2, size.dy * 2);
HBITMAP hbmp = hw->TakeScreenshot(area, size);
if (hbmp) {
RenderedBitmap *bmp = new RenderedBitmap(hbmp, size);
saveThumbnail(bmp);
}
// TODO: why is destruction on the UI thread necessary?
uitask::Post([=] { delete this; });
}
}
