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window.cpp Example File
painting/svggenerator/window.cpp

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 #include <QColorDialog>
 #include <QFileDialog>
 #include <QPainter>
 #include <QSvgGenerator>
 #include "window.h"
 #include "displaywidget.h"

 Window::Window(QWidget *parent)
     : QWidget(parent)
 {
     setupUi(this);
 }

 void Window::updateBackground(int background)
 {
     displayWidget->setBackground(DisplayWidget::Background(background));
 }

 void Window::updateColor()
 {
     QColor color = QColorDialog::getColor(displayWidget->color());
     if (color.isValid())
         displayWidget->setColor(color);
 }

 void Window::updateShape(int shape)
 {
     displayWidget->setShape(DisplayWidget::Shape(shape));
 }

 void Window::saveSvg()
 {
     QString newPath = QFileDialog::getSaveFileName(this, tr("Save SVG"),
         path, tr("SVG files (*.svg)"));

     if (newPath.isEmpty())
         return;

     path = newPath;

     QSvgGenerator generator;
     generator.setFileName(path);
     generator.setSize(QSize(200, 200));
     generator.setViewBox(QRect(0, 0, 200, 200));
     generator.setTitle(tr("SVG Generator Example Drawing"));
     generator.setDescription(tr("An SVG drawing created by the SVG Generator "
                                 "Example provided with Qt."));
     QPainter painter;
     painter.begin(&generator);
     displayWidget->paint(painter);
     painter.end();
 }