debugger: SW rasterize the picture only when it changes

debugger/QT/SkCanvasWidget.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkCanvasWidget.h"
+#include <QtGui>
 
 SkCanvasWidget::SkCanvasWidget(QWidget* parent,
         SkDebugger* debugger) : QWidget(parent)
     , fHorizontalLayout(this)
     , fRasterWidget(debugger)
 #if SK_SUPPORT_GPU
     , fGLWidget(debugger)
 #endif
 {
 
@@ skipping 12 matching lines @@
 #if SK_SUPPORT_GPU
     fHorizontalLayout.addWidget(&fGLWidget);
 #endif
 
     fPreviousPoint.set(0,0);
     fUserMatrix.reset();
 
 #if SK_SUPPORT_GPU
     setWidgetVisibility(kGPU_WidgetType, true);
 #endif
-    connect(&fRasterWidget, SIGNAL(drawComplete()),
-            this->parentWidget(), SLOT(drawComplete()));
+    connect(&fRasterWidget, SIGNAL(drawComplete()), this->parentWidget(), SLOT(drawComplete()));
+    connect(&fGLWidget, SIGNAL(drawComplete()), this->parentWidget(), SLOT(drawComplete()));
 }
 
 SkCanvasWidget::~SkCanvasWidget() {}
 
 void SkCanvasWidget::drawTo(int index) {
     fDebugger->setIndex(index);
-    fRasterWidget.draw();
+    fRasterWidget.updateImage();
 #if SK_SUPPORT_GPU
-    fGLWidget.draw();
+    fGLWidget.updateImage();
 #endif
     emit commandChanged(fDebugger->index());
 }
 
 void SkCanvasWidget::mouseMoveEvent(QMouseEvent* event) {
     SkIPoint eventPoint = SkIPoint::Make(event->globalX(), event->globalY());
     SkIPoint eventOffset = eventPoint - fPreviousPoint;
     fPreviousPoint = eventPoint;
     fUserMatrix.postTranslate(eventOffset.fX, eventOffset.fY);
     fDebugger->setUserMatrix(fUserMatrix);
@@ skipping 71 matching lines @@
     fGLWidget.setSampleCount(sampleCount);
 }
 #endif
 
 void SkCanvasWidget::zoom(float scale, int px, int py) {
     fUserMatrix.postScale(scale, scale, px, py);
     emit scaleFactorChanged(fUserMatrix.getScaleX());
     fDebugger->setUserMatrix(fUserMatrix);
     drawTo(fDebugger->index());
 }