Fix TextAutosizer recalculate multipliers on rotate.

Source/web/tests/WebFrameTest.cpp

 /*
  * Copyright (C) 2010 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 669 matching lines @@
     webViewHelper.webViewImpl()->setFixedLayoutSize(WebCore::IntSize(100, 100));
     EXPECT_TRUE(webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->needsLayout());
 
     int prevLayoutCount = webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->layoutCount();
     webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->setFrameRect(WebCore::IntRect(0, 0, 641, 481));
     EXPECT_EQ(prevLayoutCount, webViewHelper.webViewImpl()->mainFrameImpl()->frameView()->layoutCount());
 
     webViewHelper.webViewImpl()->layout();
 }
 
-TEST_F(WebFrameTest, ChangeInFixedLayoutTriggersTextAutosizingRecalculate)
+// Helper function to check or set text autosizing multipliers on a document.
+static bool checkOrSetTextAutosizingMultiplier(Document* document, float multiplier, bool setMultiplier)
+{
+    bool multiplierCheckedOrSetAtLeastOnce = false;
+    for (WebCore::RenderObject* renderer = document->renderer(); renderer; renderer = renderer->nextInPreOrder()) {
+        if (renderer->style()) {
+            if (setMultiplier)
+                renderer->style()->setTextAutosizingMultiplier(multiplier);
+            EXPECT_EQ(multiplier, renderer->style()->textAutosizingMultiplier());
+            multiplierCheckedOrSetAtLeastOnce = true;
+        }
+    }
+    return multiplierCheckedOrSetAtLeastOnce;
+
+}
+
+static bool setTextAutosizingMultiplier(Document* document, float multiplier)
+{
+    return checkOrSetTextAutosizingMultiplier(document, multiplier, true);
+}
+
+static bool checkTextAutosizingMultiplier(Document* document, float multiplier)
+{
+    return checkOrSetTextAutosizingMultiplier(document, multiplier, false);
+}
+
+TEST_F(WebFrameTest, ChangeInFixedLayoutResetsTextAutosizingMultipliers)
 {
     UseMockScrollbarSettings mockScrollbarSettings;
     registerMockedHttpURLLoad("fixed_layout.html");
 
     FixedLayoutTestWebViewClient client;
     int viewportWidth = 640;
     int viewportHeight = 480;
 
-    // Make sure we initialize to minimum scale, even if the window size
-    // only becomes available after the load begins.
     FrameTestHelpers::WebViewHelper webViewHelper;
     webViewHelper.initializeAndLoad(m_baseURL + "fixed_layout.html", true, 0, &client, enableViewportSettings);
 
     WebCore::Document* document = webViewHelper.webViewImpl()->page()->mainFrame()->document();
     document->settings()->setTextAutosizingEnabled(true);
     EXPECT_TRUE(document->settings()->textAutosizingEnabled());
     webViewHelper.webViewImpl()->resize(WebSize(viewportWidth, viewportHeight));
     webViewHelper.webViewImpl()->layout();
 
-    WebCore::RenderObject* renderer = document->renderer();
-    bool multiplierSetAtLeastOnce = false;
-    while (renderer) {
-        if (renderer->style()) {
-            renderer->style()->setTextAutosizingMultiplier(2);
-            EXPECT_EQ(2, renderer->style()->textAutosizingMultiplier());
-            multiplierSetAtLeastOnce = true;
-        }
-        renderer = renderer->nextInPreOrder();
-    }
-    EXPECT_TRUE(multiplierSetAtLeastOnce);
+    EXPECT_TRUE(setTextAutosizingMultiplier(document, 2));
 
     WebCore::ViewportDescription description = document->viewportDescription();
     // Choose a width that's not going match the viewport width of the loaded document.
     description.minWidth = WebCore::Length(100, WebCore::Fixed);
     description.maxWidth = WebCore::Length(100, WebCore::Fixed);
     webViewHelper.webViewImpl()->updatePageDefinedViewportConstraints(description);
 
-    bool multiplierCheckedAtLeastOnce = false;
-    renderer = document->renderer();
-    while (renderer) {
-        if (renderer->style()) {
-            EXPECT_EQ(1, renderer->style()->textAutosizingMultiplier());
-            multiplierCheckedAtLeastOnce = true;
-        }
-        renderer = renderer->nextInPreOrder();
-    }
-    EXPECT_TRUE(multiplierCheckedAtLeastOnce);
+    EXPECT_TRUE(checkTextAutosizingMultiplier(document, 1));
+}
+
+TEST_F(WebFrameTest, SetFrameRectResetsTextAutosizingMultipliers)
+{
+    UseMockScrollbarSettings mockScrollbarSettings;
+    registerMockedHttpURLLoad("iframe_reload.html");
+    registerMockedHttpURLLoad("visible_iframe.html");
+
+    FixedLayoutTestWebViewClient client;
+    int viewportWidth = 640;
+    int viewportHeight = 480;
+
+    FrameTestHelpers::WebViewHelper webViewHelper;
+    webViewHelper.initializeAndLoad(m_baseURL + "iframe_reload.html", true, 0, &client, enableViewportSettings);
+
+    WebCore::LocalFrame* mainFrame = webViewHelper.webViewImpl()->page()->mainFrame();
+    WebCore::Document* document = mainFrame->document();
+    WebCore::FrameView* frameView = webViewHelper.webViewImpl()->mainFrameImpl()->frameView();
+    document->settings()->setTextAutosizingEnabled(true);
+    EXPECT_TRUE(document->settings()->textAutosizingEnabled());
+    webViewHelper.webViewImpl()->resize(WebSize(viewportWidth, viewportHeight));
+    webViewHelper.webViewImpl()->layout();
+
+    for (WebCore::LocalFrame* frame = mainFrame; frame; frame = frame->tree().traverseNext())
+        EXPECT_TRUE(setTextAutosizingMultiplier(frame->document(), 2));
+
+    frameView->setFrameRect(WebCore::IntRect(0, 0, 200, 200));
+
+    for (WebCore::LocalFrame* frame = mainFrame; frame; frame = frame->tree().traverseNext())
+        EXPECT_TRUE(checkTextAutosizingMultiplier(frame->document(), 1));
 }
 
 TEST_F(WebFrameTest, FixedLayoutSizeStopsResizeFromChangingLayoutSize)
 {
     UseMockScrollbarSettings mockScrollbarSettings;
     registerMockedHttpURLLoad("fixed_layout.html");
 
     int viewportWidth = 640;
     int viewportHeight = 480;
 
@@ skipping 4489 matching lines @@
     webViewHelper.initializeAndLoad("about:blank");
 
     WebCore::FrameView* frameView = webViewHelper.webViewImpl()->mainFrameImpl()->frameView();
     frameView->setFrameRect(WebCore::IntRect(0, 0, 200, 200));
     EXPECT_EQ_RECT(WebCore::IntRect(0, 0, 200, 200), frameView->frameRect());
     frameView->setFrameRect(WebCore::IntRect(100, 100, 200, 200));
     EXPECT_EQ_RECT(WebCore::IntRect(100, 100, 200, 200), frameView->frameRect());
 }
 
 } // namespace