webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 98 insertions, 0 deletions

diff --git a/Source/WebCore/platform/graphics/texmap/BitmapTexture.h b/Source/WebCore/platform/graphics/texmap/BitmapTexture.h
new file mode 100644
index 000000000..3245638a8
--- /dev/null
+++ b/Source/WebCore/platform/graphics/texmap/BitmapTexture.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
+ * Copyright (C) 2014 Igalia S.L.
+ *
+ * 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.
+ */
+
+#ifndef BitmapTexture_h
+#define BitmapTexture_h
+
+#include "IntPoint.h"
+#include "IntRect.h"
+#include "IntSize.h"
+#include <wtf/PassRefPtr.h>
+#include <wtf/RefCounted.h>
+
+namespace WebCore {
+
+class FilterOperations;
+class GraphicsLayer;
+class Image;
+class TextureMapper;
+
+// A 2D texture that can be the target of software or GL rendering.
+class BitmapTexture : public RefCounted<BitmapTexture> {
+public:
+    enum Flag {
+        NoFlag = 0,
+        SupportsAlpha = 0x01,
+        FBOAttachment = 0x02
+    };
+
+    enum UpdateContentsFlag {
+        UpdateCanModifyOriginalImageData,
+        UpdateCannotModifyOriginalImageData
+    };
+
+    typedef unsigned Flags;
+
+    BitmapTexture()
+        : m_flags(0)
+    {
+    }
+
+    virtual ~BitmapTexture() { }
+    virtual bool isBackedByOpenGL() const { return false; }
+
+    virtual IntSize size() const = 0;
+    virtual void updateContents(Image*, const IntRect&, const IntPoint& offset, UpdateContentsFlag) = 0;
+    virtual void updateContents(TextureMapper&, GraphicsLayer*, const IntRect& target, const IntPoint& offset, UpdateContentsFlag, float scale = 1);
+    virtual void updateContents(const void*, const IntRect& target, const IntPoint& offset, int bytesPerLine, UpdateContentsFlag) = 0;
+    virtual bool isValid() const = 0;
+    inline Flags flags() const { return m_flags; }
+
+    virtual int bpp() const { return 32; }
+    void reset(const IntSize& size, Flags flags = 0)
+    {
+        m_flags = flags;
+        m_contentSize = size;
+        didReset();
+    }
+    virtual void didReset() { }
+
+    inline IntSize contentSize() const { return m_contentSize; }
+    inline int numberOfBytes() const { return size().width() * size().height() * bpp() >> 3; }
+    inline bool isOpaque() const { return !(m_flags & SupportsAlpha); }
+
+    virtual PassRefPtr<BitmapTexture> applyFilters(TextureMapper&, const FilterOperations&) { return this; }
+
+protected:
+    IntSize m_contentSize;
+
+private:
+    Flags m_flags;
+};
+
+}
+
+#endif // BitmapTexture_h