@Override
public void requestZoomedViewRender() {
if (stopUpdateView) {
return;
}
// remove pending runnable
ThreadUtils.removeCallbacksFromUiThread(requestRenderRunnable);
// "requestZoomedViewRender" can be called very often by Gecko (endDrawing in LayerRender)
// without
// any thing changed in the zoomed area (useless calls from the "zoomed area" point of view).
// "requestZoomedViewRender" can take time to re-render the zoomed view, it depends of the
// complexity
// of the html on this area.
// To avoid to slow down the application, the 2 following cases are tested:
// 1- Last render is still running, plan another render later.
if (isRendering()) {
// post a new runnable DELAY_BEFORE_NEXT_RENDER_REQUEST_MS later
// We need to post with a delay to be sure that the last call to requestZoomedViewRender will
// be done.
// For a static html page WITHOUT any animation/video, there is a last call to endDrawing and
// we need to make
// the zoomed render on this last call.
ThreadUtils.postDelayedToUiThread(requestRenderRunnable, DELAY_BEFORE_NEXT_RENDER_REQUEST_MS);
return;
}
// 2- Current render occurs too early, plan another render later.
if (renderFrequencyTooHigh()) {
// post a new runnable DELAY_BEFORE_NEXT_RENDER_REQUEST_MS later
// We need to post with a delay to be sure that the last call to requestZoomedViewRender will
// be done.
// For a page WITH animation/video, the animation/video can be stopped, and we need to make
// the zoomed render on this last call.
ThreadUtils.postDelayedToUiThread(requestRenderRunnable, DELAY_BEFORE_NEXT_RENDER_REQUEST_MS);
return;
}
startTimeReRender = System.nanoTime();
// Allocate the buffer if it's the first call.
// Change the buffer size if it's not the right size.
updateBufferSize();
int tabId = Tabs.getInstance().getSelectedTab().getId();
ImmutableViewportMetrics metrics = layerView.getViewportMetrics();
PointF origin = metrics.getOrigin();
final int xPos = (int) origin.x + lastPosition.x;
final int yPos = (int) origin.y + lastPosition.y;
GeckoEvent e =
GeckoEvent.createZoomedViewEvent(
tabId, xPos, yPos, viewWidth, viewHeight, zoomFactor * metrics.zoomFactor, buffer);
GeckoAppShell.sendEventToGecko(e);
}
