cc: Create cc::DebugColors class to hold all the debugging color/width constants.

cc/quad_culler.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/quad_culler.h"
 
 #include "cc/append_quads_data.h"
 #include "cc/debug_border_draw_quad.h"
+#include "cc/debug_colors.h"
 #include "cc/layer_impl.h"
 #include "cc/occlusion_tracker.h"
 #include "cc/overdraw_metrics.h"
 #include "cc/render_pass.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include <public/WebTransformationMatrix.h>
 
 using namespace std;
 
 namespace cc {
 
-static const int debugTileBorderWidth = 1;
-static const int debugTileBorderAlpha = 120;
-static const int debugTileBorderColorRed = 160;
-static const int debugTileBorderColorGreen = 100;
-static const int debugTileBorderColorBlue = 0;
-
 QuadCuller::QuadCuller(QuadList& quadList, SharedQuadStateList& sharedQuadStateList, LayerImpl* layer, const OcclusionTrackerImpl* occlusionTracker, bool showCullingWithDebugBorderQuads, bool forSurface)
     : m_quadList(quadList)
     , m_sharedQuadStateList(sharedQuadStateList)
     , m_currentSharedQuadState(0)
     , m_layer(layer)
     , m_occlusionTracker(occlusionTracker)
     , m_showCullingWithDebugBorderQuads(showCullingWithDebugBorderQuads)
     , m_forSurface(forSurface)
 {
 }
 
 SharedQuadState* QuadCuller::useSharedQuadState(scoped_ptr<SharedQuadState> sharedQuadState)
 {
     sharedQuadState->id = m_sharedQuadStateList.size();
 
     // FIXME: If all quads are culled for the sharedQuadState, we can drop it from the list.
     m_currentSharedQuadState = sharedQuadState.get();
     m_sharedQuadStateList.append(sharedQuadState.Pass());
     return m_currentSharedQuadState;
 }
 
-static inline bool appendQuadInternal(scoped_ptr<DrawQuad> drawQuad, const gfx::Rect& culledRect, QuadList& quadList, const OcclusionTrackerImpl& occlusionTracker, bool createDebugBorderQuads)
+static inline bool appendQuadInternal(scoped_ptr<DrawQuad> drawQuad, const gfx::Rect& culledRect, QuadList& quadList, const OcclusionTrackerImpl& occlusionTracker, LayerImpl* layer, bool createDebugBorderQuads)
 {
     bool keepQuad = !culledRect.IsEmpty();
     if (keepQuad)
         drawQuad->setQuadVisibleRect(culledRect);
 
     occlusionTracker.overdrawMetrics().didCullForDrawing(drawQuad->quadTransform(), drawQuad->quadRect(), culledRect);
     occlusionTracker.overdrawMetrics().didDraw(drawQuad->quadTransform(), culledRect, drawQuad->opaqueRect());
 
     if (keepQuad) {
         if (createDebugBorderQuads && !drawQuad->isDebugQuad() && drawQuad->quadVisibleRect() != drawQuad->quadRect()) {
-            SkColor borderColor = SkColorSetARGB(debugTileBorderAlpha, debugTileBorderColorRed, debugTileBorderColorGreen, debugTileBorderColorBlue);
-            quadList.append(DebugBorderDrawQuad::create(drawQuad->sharedQuadState(), drawQuad->quadVisibleRect(), borderColor, debugTileBorderWidth).PassAs<DrawQuad>());
+            SkColor color = DebugColors::CulledTileBorderColor();
+            float width = DebugColors::CulledTileBorderWidth(layer ? layer->layerTreeHostImpl() : NULL);
+            quadList.append(DebugBorderDrawQuad::create(drawQuad->sharedQuadState(), drawQuad->quadVisibleRect(), color, width).PassAs<DrawQuad>());
         }
 
         // Pass the quad after we're done using it.
         quadList.append(drawQuad.Pass());
     }
     return keepQuad;
 }
 
 bool QuadCuller::append(scoped_ptr<DrawQuad> drawQuad, AppendQuadsData& appendQuadsData)
 {
     DCHECK(drawQuad->sharedQuadState() == m_currentSharedQuadState);
     DCHECK(drawQuad->sharedQuadStateId() == m_currentSharedQuadState->id);
     DCHECK(!m_sharedQuadStateList.isEmpty());
     DCHECK(m_sharedQuadStateList.last() == m_currentSharedQuadState);
 
     gfx::Rect culledRect;
     bool hasOcclusionFromOutsideTargetSurface;
     bool implDrawTransformIsUnknown = false;
 
     if (m_forSurface)
         culledRect = m_occlusionTracker->unoccludedContributingSurfaceContentRect(m_layer, false, drawQuad->quadRect(), &hasOcclusionFromOutsideTargetSurface);
     else
         culledRect = m_occlusionTracker->unoccludedContentRect(m_layer->renderTarget(), drawQuad->quadRect(), drawQuad->quadTransform(), implDrawTransformIsUnknown, drawQuad->clippedRectInTarget(), &hasOcclusionFromOutsideTargetSurface);
 
     appendQuadsData.hadOcclusionFromOutsideTargetSurface |= hasOcclusionFromOutsideTargetSurface;
 
-    return appendQuadInternal(drawQuad.Pass(), culledRect, m_quadList, *m_occlusionTracker, m_showCullingWithDebugBorderQuads);
+    return appendQuadInternal(drawQuad.Pass(), culledRect, m_quadList, *m_occlusionTracker, m_layer, m_showCullingWithDebugBorderQuads);
 }
 
 }  // namespace cc