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/*
* 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"
SkCanvasWidget::SkCanvasWidget(QWidget* parent,
SkDebugger* debugger) : QWidget(parent)
, fHorizontalLayout(this)
, fRasterWidget(debugger)
, fGLWidget(debugger)
{
fDebugger = debugger;
fHorizontalLayout.setSpacing(6);
fHorizontalLayout.setContentsMargins(0,0,0,0);
fRasterWidget.setSizePolicy(QSizePolicy::Expanding,
QSizePolicy::Expanding);
fGLWidget.setSizePolicy(QSizePolicy::Expanding,
QSizePolicy::Expanding);
fHorizontalLayout.addWidget(&fRasterWidget);
fHorizontalLayout.addWidget(&fGLWidget);
fPreviousPoint.set(0,0);
fUserOffset.set(0,0);
fUserScaleFactor = 1.0;
setWidgetVisibility(kGPU_WidgetType, true);
connect(&fRasterWidget, SIGNAL(drawComplete()),
this->parentWidget(), SLOT(drawComplete()));
}
SkCanvasWidget::~SkCanvasWidget() {}
void SkCanvasWidget::drawTo(int index) {
fDebugger->setIndex(index);
fRasterWidget.draw();
fGLWidget.draw();
emit commandChanged(fDebugger->index());
}
void SkCanvasWidget::mouseMoveEvent(QMouseEvent* event) {
SkIPoint eventPoint = SkIPoint::Make(event->globalX(), event->globalY());
fUserOffset += eventPoint - fPreviousPoint;
fPreviousPoint = eventPoint;
fDebugger->setUserOffset(fUserOffset);
drawTo(fDebugger->index());
}
void SkCanvasWidget::mousePressEvent(QMouseEvent* event) {
fPreviousPoint.set(event->globalX(), event->globalY());
emit hitChanged(fDebugger->getCommandAtPoint(event->x(), event->y(),
fDebugger->index()));
}
void SkCanvasWidget::mouseDoubleClickEvent(QMouseEvent* event) {
resetWidgetTransform();
}
void SkCanvasWidget::resetWidgetTransform() {
fUserOffset.set(0,0);
fUserScaleFactor = 1.0;
fDebugger->setUserOffset(fUserOffset);
fDebugger->setUserScale(fUserScaleFactor);
emit scaleFactorChanged(fUserScaleFactor);
drawTo(fDebugger->index());
}
void SkCanvasWidget::setWidgetVisibility(WidgetType type, bool isHidden) {
if (type == kRaster_8888_WidgetType) {
fRasterWidget.setHidden(isHidden);
} else if (type == kGPU_WidgetType) {
fGLWidget.setHidden(isHidden);
}
}
void SkCanvasWidget::zoom(float zoomIncrement) {
fUserScaleFactor += zoomIncrement;
/* The range of the fUserScaleFactor crosses over the range -1,0,1 frequently.
* Based on the code below, -1 and 1 both scale the image to it's original
* size we do the following to never have a registered wheel scroll
* not effect the fUserScaleFactor. */
if (fUserScaleFactor == 0) {
fUserScaleFactor = 2 * zoomIncrement;
}
emit scaleFactorChanged(fUserScaleFactor);
fDebugger->setUserScale(fUserScaleFactor);
drawTo(fDebugger->index());
}
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