1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "Test.h"
27
28#include "PlatformUtilities.h"
29#include "PlatformWebView.h"
30#include <WebKit2/WKRetainPtr.h>
31
32namespace TestWebKitAPI {
33
34static bool didFinishLoad;
35
36static void didFinishLoadForFrame(WKPageRef, WKFrameRef, WKTypeRef, const void*)
37{
38    didFinishLoad = true;
39}
40
41static void setPageLoaderClient(WKPageRef page)
42{
43    WKPageLoaderClient loaderClient;
44    memset(&loaderClient, 0, sizeof(loaderClient));
45    loaderClient.version = 0;
46    loaderClient.didFinishLoadForFrame = didFinishLoadForFrame;
47
48    WKPageSetPageLoaderClient(page, &loaderClient);
49}
50
51static void flushMessages(WKPageRef page)
52{
53    // In order to ensure all pending messages have been handled by the UI and web processes, we
54    // load a URL and wait for the load to finish.
55
56    setPageLoaderClient(page);
57
58    WKPageLoadURL(page, adoptWK(Util::createURLForResource("simple", "html")).get());
59    Util::run(&didFinishLoad);
60    didFinishLoad = false;
61
62    WKPageSetPageLoaderClient(page, 0);
63}
64
65static bool timerFired;
66static void CALLBACK timerCallback(HWND hwnd, UINT, UINT_PTR timerID, DWORD)
67{
68    ::KillTimer(hwnd, timerID);
69    timerFired = true;
70}
71
72static void runForDuration(double seconds)
73{
74    ::SetTimer(0, 0, seconds * 1000, timerCallback);
75    Util::run(&timerFired);
76    timerFired = false;
77}
78
79static void waitForBackingStoreUpdate(WKPageRef page)
80{
81    // Wait for the web process to handle the changes we just made, to perform a display (which
82    // happens on a timer), and to tell the UI process about the display (which updates the backing
83    // store).
84    // FIXME: It would be much less fragile (and maybe faster) to have an explicit way to wait
85    // until the backing store is updated.
86    runForDuration(0.5);
87    flushMessages(page);
88}
89
90TEST(WebKit2, ResizeViewWhileHidden)
91{
92    WKRetainPtr<WKContextRef> context(AdoptWK, WKContextCreate());
93    PlatformWebView webView(context.get());
94
95    HWND window = WKViewGetWindow(webView.platformView());
96
97    RECT originalRect;
98    ::GetClientRect(window, &originalRect);
99    RECT newRect = originalRect;
100    ::InflateRect(&newRect, 1, 1);
101
102    // Show the WKView and resize it so that the WKView's backing store will be created. Ideally
103    // we'd have some more explicit way of forcing the backing store to be created.
104    ::ShowWindow(window, SW_SHOW);
105    webView.resizeTo(newRect.right - newRect.left, newRect.bottom - newRect.top);
106
107    waitForBackingStoreUpdate(webView.page());
108
109    // Resize the window while hidden and show it again so that it will update its backing store at
110    // the new size.
111    ::ShowWindow(window, SW_HIDE);
112    webView.resizeTo(originalRect.right - originalRect.left, originalRect.bottom - originalRect.top);
113    ::ShowWindow(window, SW_SHOW);
114
115    // Force the WKView to paint to try to trigger <http://webkit.org/b/54142>.
116    ::SendMessage(window, WM_PAINT, 0, 0);
117
118    // In Debug builds without the fix for <http://webkit.org/b/54141>, the web process will assert
119    // at this point.
120    // FIXME: It would be good to have a way to check that our behavior is correct in Release
121    // builds, too!
122    waitForBackingStoreUpdate(webView.page());
123}
124
125} // namespace TestWebKitAPI
126