debugger/QT/SkRasterWidget.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 "SkRasterWidget.h"

SkRasterWidget::SkRasterWidget(QWidget* parent) : QWidget(parent) {
    fBitmap.setConfig(SkBitmap::kARGB_8888_Config, 800, 800);
    fBitmap.allocPixels();
    fBitmap.eraseColor(0);
    fTransform.set(0,0);
    fScaleFactor = 1.0;
    fIndex = 0;

    fDebugCanvas = new SkDebugCanvas();
    this->setStyleSheet("QWidget {background-color: white; border: 1px solid #cccccc;}");
}

SkRasterWidget::~SkRasterWidget() {
    delete fDevice;
    delete fDebugCanvas;
}

void SkRasterWidget::resizeEvent(QResizeEvent* event) {
    fBitmap.setConfig(SkBitmap::kARGB_8888_Config, event->size().width(), event->size().height());
    fBitmap.allocPixels();
    delete fDevice;
    fDevice = new SkDevice(fBitmap);
    fDebugCanvas->setBounds(event->size().width(), event->size().height());
    this->update();
}

void SkRasterWidget::paintEvent(QPaintEvent* event) {
    fBitmap.eraseColor(0);
    SkCanvas canvas(fDevice);
    canvas.translate(fTransform.fX, fTransform.fY);
    if (fScaleFactor < 0) {
        canvas.scale((1.0 / -fScaleFactor), (1.0 / -fScaleFactor));
    } else if (fScaleFactor > 0) {
        canvas.scale(fScaleFactor, fScaleFactor);
    }

    fMatrix = canvas.getTotalMatrix();
    fClip = canvas.getTotalClip().getBounds();
    fDebugCanvas->drawTo(&canvas, fIndex+1, &fBitmap);

    QPainter painter(this);
    QStyleOption opt;
    opt.init(this);

    style()->drawPrimitive(QStyle::PE_Widget, &opt, &painter, this);

    QPoint origin(0,0);
    QImage image((uchar *)fBitmap.getPixels(), fBitmap.width(),
            fBitmap.height(), QImage::Format_ARGB32_Premultiplied);

    painter.drawImage(origin, image);
    painter.end();
}