zoom_browsertest.cc | Explore in Territory

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <vector>

#include "base/memory/raw_ptr.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "build/build_config.h"
#include "content/browser/renderer_host/frame_tree_node.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/host_zoom_map.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/content_browser_test_utils.h"
#include "content/public/test/test_navigation_observer.h"
#include "content/shell/browser/shell.h"
#include "content/test/content_browser_test_utils_internal.h"
#include "net/dns/mock_host_resolver.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/public/common/page/page_zoom.h"
#include "url/gurl.h"

namespace content {

// This class contains basic tests of zoom functionality.
class ZoomBrowserTest : public ContentBrowserTest { … };


// This class contains tests to make sure that subframes zoom in a manner
// consistent with the top-level frame, even when the subframes are cross-site.
// Particular things we want to make sure of:
//
// * Subframes should always have the same zoom level as their main frame, even
// if the subframe's domain has a different zoom level stored in HostZoomMap.
//
// * The condition above should continue to hold after a navigation of the
// subframe.
//
// * Zoom changes applied to the mainframe should propagate to all subframes,
// regardless of whether they are same site or cross-site to the frame they are
// children of.
//
// The tests in this file rely on the notion that, when a page zooms, that
// subframes have both (1) a change in their frame rect, and (2) a change in
// their frame's scale. Since the page should scale as a unit, this means the
// innerWidth value of any subframe should be the same before and after the
// zoom (though it may transiently take on a different value). The
// FrameSizeObserver serves to watch for onresize events, and observes when
// the innerWidth is correctly set.
class IFrameZoomBrowserTest : public ContentBrowserTest { … };

namespace {

const double kTolerance = …;  // In CSS pixels.

double GetMainframeWindowBorder(const ToRenderFrameHost& adapter) { … }

double GetMainFrameZoomFactor(const ToRenderFrameHost& adapter, double border) { … }

double GetSubframeWidth(const ToRenderFrameHost& adapter) { … }

// This struct is used to track changes to subframes after a main frame zoom
// change, so that we can test subframe inner widths with assurance that all the
// changes have finished propagating.
struct FrameResizeObserver { … };

// This struct is used to wait until a resize has occurred.
struct ResizeObserver { … };

void WaitForResize(DOMMessageQueue& msg_queue, ResizeObserver& observer) { … }

void WaitAndCheckFrameZoom(
    DOMMessageQueue& msg_queue,
    std::vector<FrameResizeObserver>& frame_observers) { … }

}  // namespace

// Flaky. crbug.com/1055282
IN_PROC_BROWSER_TEST_F(ZoomBrowserTest, DISABLED_ZoomPreservedOnReload) { … }

// http://crbug.com/1174371
IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest, DISABLED_SubframesZoomProperly) { … }

IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest, SubframesDontZoomIndependently) { … }

// This test is flaky. https://crbug.com/1171748
IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest,
                       DISABLED_AllFramesGetDefaultZoom) { … }

// Flaky on mac, https://crbug.com/1055282
#if BUILDFLAG(IS_MAC)
#define MAYBE_SiblingFramesZoom …
#else
#define MAYBE_SiblingFramesZoom …
#endif
IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest, MAYBE_SiblingFramesZoom) { … }

IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest, SubframeRetainsZoomOnNavigation) { … }

// http://crbug.com/609213
IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest,
                       RedirectToPageWithSubframeZoomsCorrectly) { … }

// Tests that on cross-site navigation from a page that has a subframe, the
// appropriate zoom is applied to the new page.
// crbug.com/673065
IN_PROC_BROWSER_TEST_F(IFrameZoomBrowserTest,
                       SubframesDontBreakConnectionToRenderer) { … }

}  // namespace content
chromium/content/browser/zoom_browsertest.cc
