Minor draw extras cleanup and refactor

Change-Id: Iba601e384549c11cf659a47e06c586048f624148

1 files changed, 95 insertions, 0 deletions

diff --git a/Source/WebKit/android/nav/DrawExtra.cpp b/Source/WebKit/android/nav/DrawExtra.cpp
new file mode 100644
index 0000000..aa8feba
--- /dev/null
+++ b/Source/WebKit/android/nav/DrawExtra.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2012, 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 THE COPYRIGHT OWNER 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 "DrawExtra.h"
+#include "GLExtras.h"
+#include "LayerAndroid.h"
+#include "SkCanvas.h"
+#include "SkRegion.h"
+#include "WebViewCore.h"
+
+RegionLayerDrawExtra::RegionLayerDrawExtra()
+    : m_highlightColor(COLOR_HOLO_LIGHT)
+{}
+
+RegionLayerDrawExtra::~RegionLayerDrawExtra()
+{
+    HighlightRegionMap::iterator end = m_highlightRegions.end();
+    for (HighlightRegionMap::iterator it = m_highlightRegions.begin(); it != end; ++it) {
+        delete it->second;
+        it->second = 0;
+    }
+}
+
+SkRegion* RegionLayerDrawExtra::getHightlightRegionsForLayer(const LayerAndroid* layer)
+{
+    int layerId = layer ? layer->uniqueId() : 0;
+    return m_highlightRegions.get(layerId);
+}
+
+void RegionLayerDrawExtra::addHighlightRegion(const LayerAndroid* layer, const Vector<IntRect>& rects)
+{
+    if (rects.isEmpty())
+        return;
+    int layerId = layer ? layer->uniqueId() : 0;
+    SkRegion* region = m_highlightRegions.get(layerId);
+    if (!region) {
+        region = new SkRegion();
+        m_highlightRegions.set(layerId, region);
+    }
+    IntPoint offset;
+    WebViewCore::layerToAbsoluteOffset(layer, offset);
+    for (size_t i = 0; i < rects.size(); i++) {
+        IntRect r = rects.at(i);
+        r.move(-offset.x(), -offset.y());
+        region->op(r.x(), r.y(), r.maxX(), r.maxY(), SkRegion::kUnion_Op);
+    }
+}
+
+void RegionLayerDrawExtra::draw(SkCanvas* canvas, LayerAndroid* layer)
+{
+    SkRegion* region = getHightlightRegionsForLayer(layer);
+    if (!region || region->isEmpty())
+        return;
+    SkRegion::Iterator rgnIter(*region);
+    SkPaint paint;
+    paint.setColor(m_highlightColor.rgb());
+    while (!rgnIter.done()) {
+        const SkIRect& rect = rgnIter.rect();
+        canvas->drawIRect(rect, paint);
+        rgnIter.next();
+    }
+}
+
+void RegionLayerDrawExtra::drawGL(GLExtras* glExtras, const LayerAndroid* layer)
+{
+    SkRegion* region = getHightlightRegionsForLayer(layer);
+    if (!region || region->isEmpty())
+        return;
+    const TransformationMatrix* transform = layer ? layer->drawTransform() : 0;
+    glExtras->drawRegion(*region, true, false, transform, m_highlightColor);
+}