webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

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diff --git a/Source/WebKit2/Shared/CoordinatedGraphics/SimpleViewportController.h b/Source/WebKit2/Shared/CoordinatedGraphics/SimpleViewportController.h
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+++ b/Source/WebKit2/Shared/CoordinatedGraphics/SimpleViewportController.h
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+/*
+ * Copyright (C) 2011, 2012 Nokia Corporation and/or its subsidiary(-ies)
+ * Copyright (C) 2011 Benjamin Poulain <benjamin@webkit.org>
+ * Copyright (C) 2014 Igalia S.L.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this program; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef SimpleViewportController_h
+#define SimpleViewportController_h
+
+#if USE(COORDINATED_GRAPHICS_THREADED)
+
+#include <WebCore/FloatPoint.h>
+#include <WebCore/FloatRect.h>
+#include <WebCore/FloatSize.h>
+#include <WebCore/IntRect.h>
+#include <WebCore/IntSize.h>
+#include <WebCore/ViewportArguments.h>
+#include <wtf/Noncopyable.h>
+
+namespace WebKit {
+
+class SimpleViewportController {
+    WTF_MAKE_NONCOPYABLE(SimpleViewportController);
+public:
+    SimpleViewportController(const WebCore::IntSize&);
+
+    void didChangeViewportSize(const WebCore::IntSize&);
+    void didChangeContentsSize(const WebCore::IntSize&);
+    void didChangeViewportAttributes(WebCore::ViewportAttributes&&);
+    void didScroll(const WebCore::IntPoint&);
+
+    WebCore::FloatRect visibleContentsRect() const;
+    float pageScaleFactor() const { return m_pageScaleFactor; }
+
+private:
+    WebCore::FloatSize visibleContentsSize() const;
+
+    void applyScaleAfterRenderingContents(float scale);
+    void applyPositionAfterRenderingContents(const WebCore::FloatPoint& pos);
+
+    WebCore::FloatPoint boundContentsPosition(const WebCore::FloatPoint&) const;
+    WebCore::FloatPoint boundContentsPositionAtScale(const WebCore::FloatPoint&, float scale) const;
+
+    bool updateMinimumScaleToFit();
+    float innerBoundedViewportScale(float) const;
+
+    void resetViewportToDefaultState();
+
+    WebCore::IntPoint m_contentsPosition;
+    WebCore::FloatSize m_contentsSize;
+    WebCore::FloatSize m_viewportSize;
+    float m_pageScaleFactor { 1 };
+
+    bool m_allowsUserScaling { false };
+    float m_minimumScaleToFit { 1 };
+    bool m_initiallyFitToViewport { false };
+
+    bool m_hasViewportAttribute { false };
+    WebCore::ViewportAttributes m_rawAttributes;
+};
+
+} // namespace WebKit
+
+#endif // USE(COORDINATED_GRAPHICS_THREADED)
+
+#endif // SimpleViewportController_h