| # Copyright 2015 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from telemetry.internal.actions import page_action |
| from telemetry.web_perf import timeline_interaction_record |
| |
| |
| class RepeatableScrollAction(page_action.PageAction): |
| |
| def __init__(self, x_scroll_distance_ratio=0.0, y_scroll_distance_ratio=0.5, |
| repeat_count=0, repeat_delay_ms=250, timeout=60): |
| super(RepeatableScrollAction, self).__init__() |
| self._x_scroll_distance_ratio = x_scroll_distance_ratio |
| self._y_scroll_distance_ratio = y_scroll_distance_ratio |
| self._repeat_count = repeat_count |
| self._repeat_delay_ms = repeat_delay_ms |
| self._windowsize = [] |
| self._timeout = timeout |
| |
| def WillRunAction(self, tab): |
| # Get the dimensions of the screen. |
| window_info_js = 'window.innerWidth + "," + window.innerHeight' |
| js_result = tab.EvaluateJavaScript(window_info_js).split(',') |
| |
| self._windowsize = [int(js_result[0]), int(js_result[1])] |
| |
| def RunAction(self, tab): |
| # Set up a browser driven repeating scroll. The delay between the scrolls |
| # should be unaffected by render thread responsivness (or lack there of). |
| tab.SynthesizeScrollGesture( |
| x=int(self._windowsize[0] / 2), |
| y=int(self._windowsize[1] / 2), |
| xDistance=int(self._x_scroll_distance_ratio * self._windowsize[0]), |
| yDistance=int(-self._y_scroll_distance_ratio * self._windowsize[1]), |
| repeatCount=self._repeat_count, |
| repeatDelayMs=self._repeat_delay_ms, |
| interactionMarkerName=timeline_interaction_record.GetJavaScriptMarker( |
| 'Gesture_ScrollAction', [timeline_interaction_record.REPEATABLE]), |
| timeout=self._timeout) |
