--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/osswebengine/WebCore/platform/graphics/svg/cairo/SVGPaintServerGradientCairo.cpp	Mon Mar 30 12:54:55 2009 +0300
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2007 Alp Toker <alp.toker@collabora.co.uk>
+ *
+ * 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 "config.h"
+
+#if ENABLE(SVG)
+#include "SVGPaintServerGradient.h"
+#include "SVGPaintServerLinearGradient.h"
+#include "SVGPaintServerRadialGradient.h"
+
+#include "GraphicsContext.h"
+#include "RenderObject.h"
+#include "RenderPath.h"
+#include "RenderStyle.h"
+#include "SVGGradientElement.h"
+
+namespace WebCore {
+
+bool SVGPaintServerGradient::setup(GraphicsContext*& context, const RenderObject* object, SVGPaintTargetType type, bool isPaintingText) const
+{
+    m_ownerElement->buildGradient();
+
+    cairo_t* cr = context->platformContext();
+    cairo_pattern_t* pattern;
+
+    cairo_matrix_t matrix;
+    cairo_matrix_init_identity (&matrix);
+    const cairo_matrix_t gradient_matrix = gradientTransform();
+
+    // TODO: revise this code, it is known not to work in many cases
+    if (this->type() == LinearGradientPaintServer) {
+        const SVGPaintServerLinearGradient* linear = static_cast<const SVGPaintServerLinearGradient*>(this);
+
+        if (boundingBoxMode()) {
+            // TODO: use RenderPathCairo's strokeBBox?
+            double x1, y1, x2, y2;
+            cairo_fill_extents(cr, &x1, &y1, &x2, &y2);
+            cairo_matrix_translate(&matrix, x1, y1);
+            cairo_matrix_scale(&matrix, x2 - x1, y2 - y1);
+            cairo_matrix_multiply(&matrix, &matrix, &gradient_matrix);
+            cairo_matrix_invert(&matrix);
+        }
+
+        double x0, x1, y0, y1;
+        x0 = linear->gradientStart().x();
+        y0 = linear->gradientStart().y();
+        x1 = linear->gradientEnd().x();
+        y1 = linear->gradientEnd().y();
+        pattern = cairo_pattern_create_linear(x0, y0, x1, y1);
+
+    } else if (this->type() == RadialGradientPaintServer) {
+        const SVGPaintServerRadialGradient* radial = static_cast<const SVGPaintServerRadialGradient*>(this);
+        // TODO: pattern = cairo_pattern_create_radial();
+        return false;
+    } else {
+        return false;
+    }
+
+    cairo_pattern_set_filter(pattern, CAIRO_FILTER_BILINEAR);
+
+    switch (spreadMethod()) {
+        case SPREADMETHOD_PAD:
+            cairo_pattern_set_extend(pattern, CAIRO_EXTEND_PAD);
+            break;
+        case SPREADMETHOD_REFLECT:
+            cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REFLECT);
+            break;
+        case SPREADMETHOD_REPEAT:
+            cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
+            break;
+        default:
+            cairo_pattern_set_extend(pattern, CAIRO_EXTEND_NONE);
+            break;
+    }
+
+    cairo_pattern_set_matrix(pattern, &matrix);
+
+    const Vector<SVGGradientStop>& stops = gradientStops();
+
+    for (unsigned i = 0; i < stops.size(); ++i) {
+        float offset = stops[i].first;
+        Color color = stops[i].second;
+
+        cairo_pattern_add_color_stop_rgba(pattern, offset, color.red(), color.green(), color.blue(), color.alpha());
+    }
+
+    cairo_set_source(cr, pattern);
+    cairo_pattern_destroy(pattern);
+
+    return true;
+}
+
+} // namespace WebCore
+
+#endif