Title: [187250] trunk/Source/WebKit2
Revision
187250
Author
[email protected]
Date
2015-07-23 13:53:47 -0700 (Thu, 23 Jul 2015)

Log Message

Should not allow previews of 1x1 images
https://bugs.webkit.org/show_bug.cgi?id=147237
-and corresponding-
rdar://problem/21968460

Reviewed by Tim Horton.

1x1 images are used on some sites to cover actual images, which leads to a 
misleading preview experience. There is not any reason why you would really 
want to preview an image this small nor any reason to believe that the 
preview would result in anything useful.
* WebProcess/WebPage/ios/WebPageIOS.mm:
(WebKit::WebPage::getPositionInformation):

Modified Paths

Diff

Modified: trunk/Source/WebKit2/ChangeLog (187249 => 187250)


--- trunk/Source/WebKit2/ChangeLog	2015-07-23 20:24:08 UTC (rev 187249)
+++ trunk/Source/WebKit2/ChangeLog	2015-07-23 20:53:47 UTC (rev 187250)
@@ -1,3 +1,19 @@
+2015-07-23  Beth Dakin  <[email protected]>
+
+        Should not allow previews of 1x1 images
+        https://bugs.webkit.org/show_bug.cgi?id=147237
+        -and corresponding-
+        rdar://problem/21968460
+
+        Reviewed by Tim Horton.
+
+        1x1 images are used on some sites to cover actual images, which leads to a 
+        misleading preview experience. There is not any reason why you would really 
+        want to preview an image this small nor any reason to believe that the 
+        preview would result in anything useful.
+        * WebProcess/WebPage/ios/WebPageIOS.mm:
+        (WebKit::WebPage::getPositionInformation):
+
 2015-07-23  Brady Eidson  <[email protected]>
 
         Crash in WebPlatformStrategies::createPingHandle - Deref a null NetworkingContext.

Modified: trunk/Source/WebKit2/WebProcess/WebPage/ios/WebPageIOS.mm (187249 => 187250)


--- trunk/Source/WebKit2/WebProcess/WebPage/ios/WebPageIOS.mm	2015-07-23 20:24:08 UTC (rev 187249)
+++ trunk/Source/WebKit2/WebProcess/WebPage/ios/WebPageIOS.mm	2015-07-23 20:53:47 UTC (rev 187250)
@@ -2221,17 +2221,19 @@
                 } else if (element->renderer() && element->renderer()->isRenderImage()) {
                     auto& renderImage = downcast<RenderImage>(*(element->renderer()));
                     if (renderImage.cachedImage() && !renderImage.cachedImage()->errorOccurred()) {
-                        info.imageURL = [(NSURL *)element->document().completeURL(renderImage.cachedImage()->url()) absoluteString];
                         if (Image* image = renderImage.cachedImage()->imageForRenderer(&renderImage)) {
-                            info.isAnimatedImage = image->isAnimated();
-                            FloatSize screenSizeInPixels = screenSize();
-                            screenSizeInPixels.scale(corePage()->deviceScaleFactor());
-                            FloatSize scaledSize = largestRectWithAspectRatioInsideRect(image->size().width() / image->size().height(), FloatRect(0, 0, screenSizeInPixels.width(), screenSizeInPixels.height())).size();
-                            FloatSize bitmapSize = scaledSize.width() < image->size().width() ? scaledSize : image->size();
-                            if (RefPtr<ShareableBitmap> sharedBitmap = ShareableBitmap::createShareable(IntSize(bitmapSize), ShareableBitmap::SupportsAlpha)) {
-                                auto graphicsContext = sharedBitmap->createGraphicsContext();
-                                graphicsContext->drawImage(image, ColorSpaceDeviceRGB, FloatRect(0, 0, bitmapSize.width(), bitmapSize.height()));
-                                info.image = sharedBitmap;
+                            if (image->width() > 1 && image->height() > 1) {
+                                info.imageURL = [(NSURL *)element->document().completeURL(renderImage.cachedImage()->url()) absoluteString];
+                                info.isAnimatedImage = image->isAnimated();
+                                FloatSize screenSizeInPixels = screenSize();
+                                screenSizeInPixels.scale(corePage()->deviceScaleFactor());
+                                FloatSize scaledSize = largestRectWithAspectRatioInsideRect(image->size().width() / image->size().height(), FloatRect(0, 0, screenSizeInPixels.width(), screenSizeInPixels.height())).size();
+                                FloatSize bitmapSize = scaledSize.width() < image->size().width() ? scaledSize : image->size();
+                                if (RefPtr<ShareableBitmap> sharedBitmap = ShareableBitmap::createShareable(IntSize(bitmapSize), ShareableBitmap::SupportsAlpha)) {
+                                    auto graphicsContext = sharedBitmap->createGraphicsContext();
+                                    graphicsContext->drawImage(image, ColorSpaceDeviceRGB, FloatRect(0, 0, bitmapSize.width(), bitmapSize.height()));
+                                    info.image = sharedBitmap;
+                                }
                             }
                         }
                     }
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