Floating division miscalculation with launching in landscape mode

[Title] Floating division miscalculation with launching in landscape mode
[Issue#] N_SE-35034, N_SE-35003
[Problem] Content is not fitted correctly if browser loads media content in
        landscape mode
[Cause] Minimum scale factor is selected maximum one between horizontal and
        vertical minimum scale factor. And on landscape mode, vertical minimum
        scale factor is a bit larger than horizontal minimum scale factor. So,
        content is not fitted initially.
[Solution] Ignore a bit difference between horizontal and vertial minimum
        scale factor. And initialize m_viewportAngle for landscape mode
        launching.

Change-Id: I9c551f35606ea724cceaa2461a39705bfd8f949b

diff --git a/Source/WebKit2/UIProcess/API/efl/PageClientImpl.cpp b/Source/WebKit2/UIProcess/API/efl/PageClientImpl.cpp
index e0ff8f7..34c115a 100755 (executable)
--- a/Source/WebKit2/UIProcess/API/efl/PageClientImpl.cpp
+++ b/Source/WebKit2/UIProcess/API/efl/PageClientImpl.cpp
@@ -136,6 +136,8 @@ PageClientImpl::PageClientImpl(EwkViewImpl* viewImpl)
 #if ENABLE(TIZEN_WEBKIT2_FORM_DATABASE)
     m_formDataCandidate = FormDataCandidate::create(m_viewImpl);
 #endif
+    Ecore_Evas* ee = ecore_evas_ecore_evas_get(evas_object_evas_get(m_viewImpl->view()));
+    m_viewportAngle = ecore_evas_rotation_get(ee);
 #endif
 
     setBackgroundColor(1, 1, 1, 1);
@@ -233,6 +235,11 @@ double PageClientImpl::availableMinimumScale()
     IntSize contentsSize = m_viewImpl->page()->contentsSize();
     double horizontalMinScale = max(((double)viewSize().width() / contentsSize.width()), 0.25);
     double verticalMinScale = max(((double)viewSize().height() / contentsSize.height()), 0.25);
+    // If there's only a bit ignorable difference between horizontalMinScale and verticalMinScale,
+    // ignore verticalMinScale to fit content's width to view
+    const double ignorableThreshold = 0.01;
+    if (fabs(horizontalMinScale - verticalMinScale) < ignorableThreshold)
+        verticalMinScale = horizontalMinScale;
     return min(max(horizontalMinScale, verticalMinScale), m_viewportConstraints.maximumScale);
 }
 
@@ -374,8 +381,11 @@ void PageClientImpl::didChangeViewportProperties(const WebCore::ViewportAttribut
     // if content is reloaded, contents size will not be changed
     // so, we need to calculate minimum scale here.
     // if content size is changed later, minimum scale will be re-calculated on didChangeContentsSize()
-    if (m_viewportConstraints.userScalable)
+    if (m_viewportConstraints.userScalable) {
+        if (fabs(m_viewportConstraints.initialScale - m_viewportConstraints.minimumScale) < numeric_limits<float>::epsilon())
+            m_viewportConstraints.initialScale = availableMinimumScale();
         m_viewportConstraints.minimumScale = availableMinimumScale();
+    }
 
     // setVisibleContentRect() should be called to adjust visible content rect only when view is resized
     if (!m_pageDidRendered || m_viewImpl->page()->estimatedProgress() <= 0.1)