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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 "SkRasterWidget.h"
#include "SkDebugger.h"
#include <QtGui>
SkRasterWidget::SkRasterWidget(SkDebugger *debugger)
: QWidget()
, fDebugger(debugger)
, fNeedImageUpdate(false) {
this->setStyleSheet("QWidget {background-color: black; border: 1px solid #cccccc;}");
}
void SkRasterWidget::resizeEvent(QResizeEvent* event) {
this->QWidget::resizeEvent(event);
QRect r = this->contentsRect();
if (r.width() == 0 || r.height() == 0) {
fSurface = nullptr;
} else {
SkImageInfo info = SkImageInfo::MakeN32Premul(r.width(), r.height());
fSurface = SkSurface::MakeRaster(info);
}
this->updateImage();
}
void SkRasterWidget::paintEvent(QPaintEvent* event) {
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
QStyleOption opt;
opt.init(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &painter, this);
if (!fSurface) {
return;
}
if (fNeedImageUpdate) {
fDebugger->draw(fSurface->getCanvas());
fSurface->getCanvas()->flush();
fNeedImageUpdate = false;
Q_EMIT drawComplete();
}
SkPixmap pixmap;
if (fSurface->peekPixels(&pixmap)) {
QImage image(reinterpret_cast<const uchar*>(pixmap.addr()),
pixmap.width(),
pixmap.height(),
pixmap.rowBytes(),
QImage::Format_ARGB32_Premultiplied);
#if SK_R32_SHIFT == 0
painter.drawImage(this->contentsRect(), image.rgbSwapped());
#else
painter.drawImage(this->contentsRect(), image);
#endif
}
}
void SkRasterWidget::updateImage() {
if (!fSurface) {
return;
}
fNeedImageUpdate = true;
this->update();
}
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