external/webkit r30707

1 files changed, 101 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/cairo/GraphicsContextPlatformPrivateCairo.h b/WebCore/platform/graphics/cairo/GraphicsContextPlatformPrivateCairo.h
new file mode 100644
index 0000000..26db336
--- /dev/null
+++ b/WebCore/platform/graphics/cairo/GraphicsContextPlatformPrivateCairo.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
+ * Copyright (C) 2007 Alp Toker <alp@atoker.com>
+ * Copyright (C) 2008 Brent Fulgham <bfulgham@gmail.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. 
+ */
+
+#include "GraphicsContext.h"
+
+#include <cairo.h>
+#include <math.h>
+#include <stdio.h>
+#include <wtf/MathExtras.h>
+
+#if PLATFORM(GTK)
+#include <gdk/gdk.h>
+#include <pango/pango.h>
+#elif PLATFORM(WIN)
+#include <cairo-win32.h>
+#endif
+
+namespace WebCore {
+
+class GraphicsContextPlatformPrivate {
+public:
+    GraphicsContextPlatformPrivate()
+        :  cr(0)
+#if PLATFORM(GTK)
+        , expose(0)
+#elif PLATFORM(WIN)
+        // NOTE:  These may note be needed: review and remove once Cairo implementation is complete
+        , m_hdc(0)
+        , m_transparencyCount(0)
+#endif
+    {
+    }
+
+    ~GraphicsContextPlatformPrivate()
+    {
+        cairo_destroy(cr);
+    }
+
+#if PLATFORM(WIN)
+    // On Windows, we need to update the HDC for form controls to draw in the right place.
+    void save();
+    void restore();
+    void clip(const IntRect&);
+    void clip(const Path&);
+    void scale(const FloatSize&);
+    void rotate(float);
+    void translate(float, float);
+    void concatCTM(const AffineTransform&);
+    void beginTransparencyLayer() { m_transparencyCount++; }
+    void endTransparencyLayer() { m_transparencyCount--; }
+#else
+    // On everything else, we do nothing.
+    void save() {}
+    void restore() {}
+    void clip(const IntRect&) {}
+    void clip(const Path&) {}
+    void scale(const FloatSize&) {}
+    void rotate(float) {}
+    void translate(float, float) {}
+    void concatCTM(const AffineTransform&) {}
+    void beginTransparencyLayer() {}
+    void endTransparencyLayer() {}
+#endif
+
+    cairo_t* cr;
+    Vector<float> layers;
+
+#if PLATFORM(GTK)
+    GdkEventExpose* expose;
+#elif PLATFORM(WIN)
+    HDC m_hdc;
+    unsigned m_transparencyCount;
+#endif
+};
+
+} // namespace WebCore
+