tools/drawMapTest/drawmapscene.cpp
author unc0rr
Sat, 27 Nov 2010 23:55:39 +0300
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Some basic functionality
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#include <QDebug>
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#include <QGraphicsSceneMouseEvent>
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#include "drawmapscene.h"
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DrawMapScene::DrawMapScene(QObject *parent) :
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    QGraphicsScene(parent),
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    m_pen(Qt::black),
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    m_brush(Qt::black)
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{
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    setSceneRect(0, 0, 4096, 2048);
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    QLinearGradient gradient(0, 0, 0, 2048);
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    gradient.setColorAt(0, QColor(160, 160, 255));
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    gradient.setColorAt(1, QColor(255, 255, 160));
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    setBackgroundBrush(QBrush(gradient));
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    m_halfWidth = 67;
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}
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void DrawMapScene::mouseMoveEvent(QGraphicsSceneMouseEvent * mouseEvent)
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{
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    qDebug() << "move" << mouseEvent->scenePos();
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    if(mouseEvent->buttons() && Qt::LeftButton)
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        drawFigure(mouseEvent->scenePos());
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}
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void DrawMapScene::mousePressEvent(QGraphicsSceneMouseEvent * mouseEvent)
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{
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    qDebug() << "press" << mouseEvent->scenePos();
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    drawFigure(mouseEvent->scenePos());
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}
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void DrawMapScene::mouseReleaseEvent(QGraphicsSceneMouseEvent * mouseEvent)
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{
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    qDebug() << "release" << mouseEvent->scenePos();
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}
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void DrawMapScene::drawFigure(const QPointF & point)
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{
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    addEllipse(
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            point.x() - m_halfWidth,
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            point.y() - m_halfWidth,
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            m_halfWidth * 2,
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            m_halfWidth * 2,
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            m_pen,
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            m_brush
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        );
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}