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WebDriver+Browser: Implement GET /session/{id}/screenshot

This doesn't follow the spec to a tee. Our OutOfProcessWebView already
has a bitmap that can be used as the window screenshot. Therefore, we
can bypass the steps that assume we need to access the window's frame
buffer in-flight.

We also don't create an HTMLCanvasElement. We would need a Document in
the WebDriver process to do so. Instead, we can still run the encoding
steps exactly as-is using the screenshot bitmap.
This commit is contained in:
Timothy Flynn 2022-11-02 12:59:02 -04:00 committed by Linus Groh
parent d603585802
commit 1ffaad29e1
8 changed files with 81 additions and 3 deletions

View file

@ -255,4 +255,16 @@ Messages::WebDriverSessionClient::GetElementTagNameResponse WebDriverConnection:
return { "" };
}
Messages::WebDriverSessionClient::TakeScreenshotResponse WebDriverConnection::take_screenshot()
{
dbgln_if(WEBDRIVER_DEBUG, "WebDriverConnection: take_screenshot");
if (auto browser_window = m_browser_window.strong_ref()) {
auto& tab = browser_window->active_tab();
if (tab.on_take_screenshot)
return { tab.on_take_screenshot() };
}
return { {} };
}
}