Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 173 insertions, 0 deletions

diff --git a/Source/WebCore/css/CSSGradientValue.h b/Source/WebCore/css/CSSGradientValue.h
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+/*
+ * Copyright (C) 2008 Apple 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:
+ * 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 CSSGradientValue_h
+#define CSSGradientValue_h
+
+#include "CSSImageGeneratorValue.h"
+#include "CSSPrimitiveValue.h"
+#include <wtf/RefPtr.h>
+#include <wtf/Vector.h>
+
+namespace WebCore {
+
+class FloatPoint;
+class Gradient;
+
+enum CSSGradientType { CSSLinearGradient, CSSRadialGradient };
+enum CSSGradientRepeat { NonRepeating, Repeating };
+
+struct CSSGradientColorStop {
+    RefPtr<CSSPrimitiveValue> m_position; // percentage or length
+    RefPtr<CSSPrimitiveValue> m_color;
+};
+
+class CSSGradientValue : public CSSImageGeneratorValue {
+public:
+    PassRefPtr<Image> image(RenderObject*, const IntSize&);
+
+    void setFirstX(PassRefPtr<CSSPrimitiveValue> val) { m_firstX = val; }
+    void setFirstY(PassRefPtr<CSSPrimitiveValue> val) { m_firstY = val; }
+    void setSecondX(PassRefPtr<CSSPrimitiveValue> val) { m_secondX = val; }
+    void setSecondY(PassRefPtr<CSSPrimitiveValue> val) { m_secondY = val; }
+
+    void addStop(const CSSGradientColorStop& stop) { m_stops.append(stop); }
+
+    Vector<CSSGradientColorStop>& stops() { return m_stops; }
+
+    void sortStopsIfNeeded();
+
+    bool isLinearGradient() const { return classType() == LinearGradientClass; }
+    bool isRadialGradient() const { return classType() == RadialGradientClass; }
+
+    bool isRepeating() const { return m_repeating; }
+
+    bool deprecatedType() const { return m_deprecatedType; } // came from -webkit-gradient
+
+    bool isFixedSize() const { return false; }
+    IntSize fixedSize(const RenderObject*) const { return IntSize(); }
+
+    bool isPending() const { return false; }
+    void loadSubimages(CachedResourceLoader*) { }
+
+protected:
+    CSSGradientValue(ClassType classType, CSSGradientRepeat repeat, bool deprecatedType = false)
+        : CSSImageGeneratorValue(classType)
+        , m_stopsSorted(false)
+        , m_deprecatedType(deprecatedType)
+        , m_repeating(repeat == Repeating)
+    {
+    }
+
+    void addStops(Gradient*, RenderObject*, RenderStyle* rootStyle, float maxLengthForRepeat = 0);
+
+    // Resolve points/radii to front end values.
+    FloatPoint computeEndPoint(CSSPrimitiveValue*, CSSPrimitiveValue*, RenderStyle*, RenderStyle* rootStyle, const IntSize&);
+
+    bool isCacheable() const;
+
+    // Points. Some of these may be null for linear gradients.
+    RefPtr<CSSPrimitiveValue> m_firstX;
+    RefPtr<CSSPrimitiveValue> m_firstY;
+
+    RefPtr<CSSPrimitiveValue> m_secondX;
+    RefPtr<CSSPrimitiveValue> m_secondY;
+
+    // Stops
+    Vector<CSSGradientColorStop> m_stops;
+    bool m_stopsSorted;
+    bool m_deprecatedType; // -webkit-gradient()
+    bool m_repeating;
+};
+
+
+class CSSLinearGradientValue : public CSSGradientValue {
+public:
+    static PassRefPtr<CSSLinearGradientValue> create(CSSGradientRepeat repeat, bool deprecatedType = false)
+    {
+        return adoptRef(new CSSLinearGradientValue(repeat, deprecatedType));
+    }
+
+    void setAngle(PassRefPtr<CSSPrimitiveValue> val) { m_angle = val; }
+
+    String customCssText() const;
+
+    // Create the gradient for a given size.
+    PassRefPtr<Gradient> createGradient(RenderObject*, const IntSize&);
+
+private:
+    CSSLinearGradientValue(CSSGradientRepeat repeat, bool deprecatedType = false)
+        : CSSGradientValue(LinearGradientClass, repeat, deprecatedType)
+    {
+    }
+
+    RefPtr<CSSPrimitiveValue> m_angle; // may be null.
+};
+
+class CSSRadialGradientValue : public CSSGradientValue {
+public:
+    static PassRefPtr<CSSRadialGradientValue> create(CSSGradientRepeat repeat, bool deprecatedType = false)
+    {
+        return adoptRef(new CSSRadialGradientValue(repeat, deprecatedType));
+    }
+
+    String customCssText() const;
+
+    void setFirstRadius(PassRefPtr<CSSPrimitiveValue> val) { m_firstRadius = val; }
+    void setSecondRadius(PassRefPtr<CSSPrimitiveValue> val) { m_secondRadius = val; }
+
+    void setShape(PassRefPtr<CSSPrimitiveValue> val) { m_shape = val; }
+    void setSizingBehavior(PassRefPtr<CSSPrimitiveValue> val) { m_sizingBehavior = val; }
+
+    void setEndHorizontalSize(PassRefPtr<CSSPrimitiveValue> val) { m_endHorizontalSize = val; }
+    void setEndVerticalSize(PassRefPtr<CSSPrimitiveValue> val) { m_endVerticalSize = val; }
+
+    // Create the gradient for a given size.
+    PassRefPtr<Gradient> createGradient(RenderObject*, const IntSize&);
+
+private:
+    CSSRadialGradientValue(CSSGradientRepeat repeat, bool deprecatedType = false)
+        : CSSGradientValue(RadialGradientClass, repeat, deprecatedType)
+    {
+    }
+
+    // Resolve points/radii to front end values.
+    float resolveRadius(CSSPrimitiveValue*, RenderStyle*, RenderStyle* rootStyle, float* widthOrHeight = 0);
+
+    // These may be null for non-deprecated gradients.
+    RefPtr<CSSPrimitiveValue> m_firstRadius;
+    RefPtr<CSSPrimitiveValue> m_secondRadius;
+
+    // The below are only used for non-deprecated gradients.
+    RefPtr<CSSPrimitiveValue> m_shape;
+    RefPtr<CSSPrimitiveValue> m_sizingBehavior;
+
+    RefPtr<CSSPrimitiveValue> m_endHorizontalSize;
+    RefPtr<CSSPrimitiveValue> m_endVerticalSize;
+};
+
+} // namespace WebCore
+
+#endif // CSSGradientValue_h