Method CropImage

cpp/iedriver/CommandHandlers/ScreenshotCommandHandler.cpp:257–296

}

void ScreenshotCommandHandler::CropImage(HWND content_window_handle,
                                         LocationInfo element_location) {
  RECT viewport_rect;
  ::GetWindowRect(content_window_handle, &viewport_rect);
  ::OffsetRect(&viewport_rect,
               -1 * viewport_rect.left,
               -1 * viewport_rect.top);

  POINT element_rect_origin;
  element_rect_origin.x = element_location.x;
  element_rect_origin.y = element_location.y;

  RECT element_rect = { element_rect_origin.x, 
                        element_rect_origin.y,
                        element_rect_origin.x + element_location.width,
                        element_rect_origin.y + element_location.height };

  RECT screenshot_rect;
  ::IntersectRect(&screenshot_rect, &viewport_rect, &element_rect);

  long width = screenshot_rect.right - screenshot_rect.left;
  long height = screenshot_rect.bottom - screenshot_rect.top;

  RECT destination_rect = { 0, 0, width, height };

  CImage* image = new CImage();
  image->Create(width, height, 32);
  HDC device_context = image->GetDC();
  this->image_->Draw(device_context, destination_rect, screenshot_rect);
  image->ReleaseDC();

  this->ClearImage();
  this->image_ = new CImage();
  this->image_->Create(width, height, 32);
  HDC dc = this->image_->GetDC();
  image->BitBlt(dc, 0, 0);
  this->image_->ReleaseDC();
  image->Destroy();
  delete image;
}

} // namespace webdriver