widget/nsBaseScreen.cpp
author Jan Henning <jh+bugzilla@buttercookie.de>
Fri, 11 Jan 2019 21:21:41 +0000
changeset 453568 0355f47af6ceab050018e9c27fc9d9c4bb944662
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
child 472056 e1993a1f09ac53cd1a04fdf6a87f8cad8e44f73e
permissions -rw-r--r--
Bug 1517976 - Test that resetting WindowUtils.isFirstPaint doesn't clobber APZ scroll position. r=botond We need to setup a case where the visual viewport is smaller than the layout viewport. Faking a pinch zoom through touch events is imprecise, whereas calling windowUtils.setResolutionAndScaleTo(value > 1) to simulate the equivalent effect of a pinch-zoom on the page led to the subsequent scroll attempt failing quite often even after calling waitForApzFlushedRepaints(). So instead, we set up a very wide layout viewport through the meta viewport tag, which on Desktop means additionally enabling the dom.meta-viewport.enabled pref. Differential Revision: https://phabricator.services.mozilla.com/D15791

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#define MOZ_FATAL_ASSERTIONS_FOR_THREAD_SAFETY

#include "nsBaseScreen.h"

NS_IMPL_ISUPPORTS(nsBaseScreen, nsIScreen)

nsBaseScreen::nsBaseScreen() {}

nsBaseScreen::~nsBaseScreen() {}

NS_IMETHODIMP
nsBaseScreen::GetRectDisplayPix(int32_t *outLeft, int32_t *outTop,
                                int32_t *outWidth, int32_t *outHeight) {
  return GetRect(outLeft, outTop, outWidth, outHeight);
}

NS_IMETHODIMP
nsBaseScreen::GetAvailRectDisplayPix(int32_t *outLeft, int32_t *outTop,
                                     int32_t *outWidth, int32_t *outHeight) {
  return GetAvailRect(outLeft, outTop, outWidth, outHeight);
}

NS_IMETHODIMP
nsBaseScreen::GetContentsScaleFactor(double *aContentsScaleFactor) {
  *aContentsScaleFactor = 1.0;
  return NS_OK;
}

NS_IMETHODIMP
nsBaseScreen::GetDefaultCSSScaleFactor(double *aScaleFactor) {
  *aScaleFactor = 1.0;
  return NS_OK;
}

NS_IMETHODIMP
nsBaseScreen::GetDpi(float *aDPI) {
  *aDPI = 96;
  return NS_OK;
}