1 files changed, 71 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/qt/ContextShadow.h b/WebCore/platform/graphics/qt/ContextShadow.h
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+++ b/WebCore/platform/graphics/qt/ContextShadow.h
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+/*
+ * Copyright (C) 2010 Sencha, 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 ContextShadow_h
+#define ContextShadow_h
+
+#include <QPainter>
+
+namespace WebCore {
+
+// This is to track and keep the shadow state. We use this rather than
+// using GraphicsContextState to allow possible optimizations (right now
+// only to determine the shadow type, but in future it might covers things
+// like cached scratch image, persistent shader, etc).
+
+// This class should be copyable since GraphicsContextQt keeps a stack of
+// the shadow state for savePlatformState and restorePlatformState.
+
+class ContextShadow {
+public:
+    enum {
+        NoShadow,
+        OpaqueSolidShadow,
+        AlphaSolidShadow,
+        BlurShadow
+    } type;
+
+    QColor color;
+    int blurRadius;
+    QPointF offset;
+
+    ContextShadow();
+    ContextShadow(const QColor& c, float r, qreal dx, qreal dy);
+
+    void clear();
+
+    // Draws the shadow for colored rectangle (can't be filled with pattern
+    // or gradient) according to the shadow parameters.
+    // Note: 'rect' specifies the rectangle which casts the shadow,
+    // NOT the bounding box of the shadow.
+    void drawShadowRect(QPainter* p, const QRectF& rect);
+
+};
+
+} // namespace WebCore
+
+#endif // ContextShadow_h