| /* |
| * Copyright (C) 2026 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| #import "Helpers/DeprecatedGlobalValues.h" |
| #import "Helpers/PlatformUtilities.h" |
| #import "Helpers/Test.h" |
| #import <WebKit/WebFrame.h> |
| #import <WebKit/WebFrameView.h> |
| #import <WebKit/WebHTMLView.h> |
| #import <WebKit/WebView.h> |
| #import <wtf/RetainPtr.h> |
| |
| @interface EmbeddedPrintPaginationLoadDelegate : NSObject <WebFrameLoadDelegate> |
| @end |
| |
| @implementation EmbeddedPrintPaginationLoadDelegate |
| - (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame |
| { |
| didFinishLoad = true; |
| } |
| @end |
| |
| namespace TestWebKitAPI { |
| |
| // Regression test for webkit.org/b/303713 follow-up: when a WebHTMLView |
| // is a subview of a larger view hierarchy being printed, AppKit invokes |
| // -adjustPageHeightNew:top:bottom:limit: on it, which calls |
| // -_setPrinting: with all page dimensions equal to zero. After |
| // 304253@main that bottomed out in LocalFrame::setPrinting, which ran |
| // forceLayoutForPagination with a zero page size — asserting in debug |
| // and silently dropping text runs from the CG print context in release. |
| // This test exercises the same entry point and asserts that it does not |
| // crash. |
| TEST(WebKitLegacy, EmbeddedPrintPaginationWithZeroPageSize) |
| { |
| RetainPtr webView = adoptNS([[WebView alloc] initWithFrame:NSMakeRect(0, 0, 400, 400) frameName:nil groupName:nil]); |
| auto *webHTMLView = (WebHTMLView *)[[[webView mainFrame] frameView] documentView]; |
| |
| RetainPtr loadDelegate = adoptNS([[EmbeddedPrintPaginationLoadDelegate alloc] init]); |
| [webView setFrameLoadDelegate:loadDelegate.get()]; |
| |
| didFinishLoad = false; |
| [[webView mainFrame] loadHTMLString:@"<html><body><p>Hello, printing world.</p></body></html>" baseURL:nil]; |
| Util::run(&didFinishLoad); |
| |
| // This is the AppKit-driven call path used when a WebHTMLView is a |
| // subview of a larger view hierarchy being printed. Before the fix |
| // this asserted in debug (LocalFrame.cpp:resizePageRectsKeepingRatio) |
| // and silently dropped text runs in release; reaching the |
| // EXPECT_GT below without crashing is the pass condition. |
| CGFloat newBottom = 0; |
| [webHTMLView adjustPageHeightNew:&newBottom top:0 bottom:400 limit:400]; |
| EXPECT_GT(newBottom, 0); |
| } |
| |
| } // namespace TestWebKitAPI |
