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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QtWidgets>
#include "displaywidget.h"
DisplayWidget::DisplayWidget(QWidget *parent)
: QWidget(parent)
{
QPainterPath car;
QPainterPath house;
QFile file(":resources/shapes.dat");
file.open(QFile::ReadOnly);
QDataStream stream(&file);
stream >> car >> house >> tree >> moon;
file.close();
shapeMap[Car] = car;
shapeMap[House] = house;
background = Sky;
shapeColor = Qt::darkYellow;
shape = House;
}
//! [paint event]
void DisplayWidget::paintEvent(QPaintEvent * /* event */)
{
QPainter painter;
painter.begin(this);
painter.setRenderHint(QPainter::Antialiasing);
paint(painter);
painter.end();
}
//! [paint event]
//! [paint function]
void DisplayWidget::paint(QPainter &painter)
{
//![paint picture]
painter.setClipRect(QRect(0, 0, 200, 200));
painter.setPen(Qt::NoPen);
switch (background) {
case Sky:
default:
painter.fillRect(QRect(0, 0, 200, 200), Qt::darkBlue);
painter.translate(145, 10);
painter.setBrush(Qt::white);
painter.drawPath(moon);
painter.translate(-145, -10);
break;
case Trees:
{
painter.fillRect(QRect(0, 0, 200, 200), Qt::darkGreen);
painter.setBrush(Qt::green);
painter.setPen(Qt::black);
for (int y = -55, row = 0; y < 200; y += 50, ++row) {
int xs;
if (row == 2 || row == 3)
xs = 150;
else
xs = 50;
for (int x = 0; x < 200; x += xs) {
painter.save();
painter.translate(x, y);
painter.drawPath(tree);
painter.restore();
}
}
break;
}
case Road:
painter.fillRect(QRect(0, 0, 200, 200), Qt::gray);
painter.setPen(QPen(Qt::white, 4, Qt::DashLine));
painter.drawLine(QLine(0, 35, 200, 35));
painter.drawLine(QLine(0, 165, 200, 165));
break;
}
painter.setBrush(shapeColor);
painter.setPen(Qt::black);
painter.translate(100, 100);
painter.drawPath(shapeMap[shape]);
//![paint picture]
}
//! [paint function]
QColor DisplayWidget::color() const
{
return shapeColor;
}
void DisplayWidget::setBackground(Background background)
{
this->background = background;
update();
}
void DisplayWidget::setColor(const QColor &color)
{
this->shapeColor = color;
update();
}
void DisplayWidget::setShape(Shape shape)
{
this->shape = shape;
update();
}
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