1 files changed, 116 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/android/GradientAndroid.cpp b/WebCore/platform/graphics/android/GradientAndroid.cpp
new file mode 100644
index 0000000..71b7f73
--- /dev/null
+++ b/WebCore/platform/graphics/android/GradientAndroid.cpp
@@ -0,0 +1,116 @@
+/*
+ * Copyright 2006, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * 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 THE COPYRIGHT HOLDERS ``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 "config.h"
+#include "Gradient.h"
+
+#include "android_graphics.h"
+#include "CSSParser.h"
+#include "GraphicsContext.h"
+#include "NotImplemented.h"
+#include "SkCanvas.h"
+#include "SkColorShader.h"
+#include "SkGradientShader.h"
+#include "SkPaint.h"
+
+class PlatformGradientRec {
+public:
+    PlatformGradientRec() : m_shader(NULL) {}
+    ~PlatformGradientRec() { m_shader->safeUnref(); }
+
+    SkShader*           m_shader;
+    SkShader::TileMode  m_tileMode;
+};
+
+namespace WebCore {
+
+void Gradient::platformDestroy()
+{
+    delete m_gradient;
+    m_gradient = 0;
+}
+
+static U8CPU F2B(float x)
+{
+    return (int)(x * 255);
+}
+
+SkShader* Gradient::getShader(SkShader::TileMode mode) {
+    if (NULL == m_gradient) {
+        m_gradient = new PlatformGradientRec;
+    } else if (m_gradient->m_tileMode == mode) {
+        return m_gradient->m_shader;
+    }
+
+    SkPoint pts[2];
+
+    android_setpt(&pts[0], m_p0);
+    android_setpt(&pts[1], m_p1);
+    size_t count = m_stops.size();
+    SkAutoMalloc    storage(count * (sizeof(SkColor) + sizeof(SkScalar)));
+    SkColor*        colors = (SkColor*)storage.get();
+    SkScalar*       pos = (SkScalar*)(colors + count);
+
+    Vector<ColorStop>::iterator iter = m_stops.begin();
+    int i = -1;
+    while (i++, iter != m_stops.end()) {
+        pos[i] = SkFloatToScalar(iter->stop);
+        colors[i] = SkColorSetARGB(F2B(iter->alpha), F2B(iter->red),
+            F2B(iter->green), F2B(iter->blue));
+        ++iter;
+    }
+
+    SkShader* s;
+    if (0 == count) {
+        // it seems the spec says a zero-size gradient draws transparent
+        s = new SkColorShader(0);
+    } else if (m_radial) {
+        s = SkGradientShader::CreateRadial(pts[0], SkFloatToScalar(m_r0),
+                                           colors, pos, count, mode);
+    } else {
+        s = SkGradientShader::CreateLinear(pts, colors, pos, count, mode);
+    }
+
+    m_gradient->m_shader->safeUnref();
+    m_gradient->m_shader = s;
+    m_gradient->m_tileMode = mode;
+    return s;
+}
+
+void Gradient::fill(GraphicsContext* context, const FloatRect& rect)
+{
+    SkRect r;
+    SkPaint paint;
+    // we don't care about the mode, so try to use the existing one
+    SkShader::TileMode mode = m_gradient ? m_gradient->m_tileMode :
+                                            SkShader::kClamp_TileMode;
+
+    paint.setAntiAlias(true);
+    paint.setShader(this->getShader(mode));
+    android_gc2canvas(context)->drawRect(*android_setrect(&r, rect), paint);
+}
+
+
+} //namespace