external/webkit r30707

1 files changed, 96 insertions, 0 deletions

diff --git a/WebCore/html/CanvasGradient.h b/WebCore/html/CanvasGradient.h
new file mode 100644
index 0000000..b6680a9
--- /dev/null
+++ b/WebCore/html/CanvasGradient.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 2007 Alp Toker <alp@atoker.com>
+ *
+ * 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
+ * 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 CanvasGradient_h
+#define CanvasGradient_h
+
+#include "FloatPoint.h"
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+
+#if PLATFORM(CG)
+typedef struct CGShading* CGShadingRef;
+#elif PLATFORM(QT)
+class QGradient;
+#elif PLATFORM(CAIRO)
+typedef struct _cairo_pattern cairo_pattern_t;
+#endif
+
+namespace WebCore {
+
+    class String;
+
+    class CanvasGradient : public RefCounted<CanvasGradient> {
+    public:
+        CanvasGradient(const FloatPoint& p0, const FloatPoint& p1);
+        CanvasGradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1);
+        ~CanvasGradient();
+
+        void addColorStop(float, const String& color);
+
+        void getColor(float value, float* r, float* g, float* b, float* a);
+
+#if PLATFORM(CG)
+        CGShadingRef platformShading();
+#elif PLATFORM(QT)
+        QGradient *platformShading();
+#elif PLATFORM(CAIRO)
+        cairo_pattern_t* platformShading();
+#endif
+
+        struct ColorStop {
+            float stop;
+            float red;
+            float green;
+            float blue;
+            float alpha;
+            
+            ColorStop() : stop(0), red(0), green(0), blue(0), alpha(0) { }
+            ColorStop(float s, float r, float g, float b, float a) : stop(s), red(r), green(g), blue(b), alpha(a) { }
+        };
+
+    private:
+        int findStop(float value) const;
+
+        bool m_radial;
+        FloatPoint m_p0, m_p1;
+        float m_r0, m_r1;
+        mutable Vector<ColorStop> m_stops;
+        mutable bool m_stopsSorted;
+        mutable int m_lastStop;
+
+#if PLATFORM(CG)
+        CGShadingRef m_shading;
+#elif PLATFORM(QT)
+        QGradient *m_shading;
+#elif PLATFORM(CAIRO)
+        cairo_pattern_t* m_shading;
+#endif
+    };
+
+} //namespace
+
+#endif