72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
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#include "mainwindow.h"
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#include "ui_mainwindow.h"
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#include <QColorDialog>
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#include <QDebug>
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#include <QDialog>
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#include <QFileDialog>
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#include <QFontDialog>
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#include <QInputDialog>
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#include <QMessageBox>
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#include <QMouseEvent>
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#include <QPainter>
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#include <QProgressDialog>
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bool enable = false;
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bool drawing = false;
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent), ui(new Ui::MainWindow) {
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ui->setupUi(this);
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this->setProperty("canMove", false);
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resize(600, 500); //窗口大小设置为600*500
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pix = QPixmap(600, 500);
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pix.fill(Qt::white);
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}
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MainWindow::~MainWindow() { delete ui; }
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void MainWindow::on_styCor_triggered() //边框颜色
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{
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QPainter pp(&pix); // 根据鼠标指针前后两个位置就行绘制直线
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pp.drawLine(
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lastPoint,
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endPoint); // 让前一个坐标值等于后一个坐标值，这样就能实现画出连续的线
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lastPoint = endPoint;
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QPainter painter(this);
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painter.drawPixmap(0, 0, pix);
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}
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void MainWindow::paintEvent(QPaintEvent *event) {
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if (enable)
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switch (drawStatus) {
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case line:
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QPainter pp(&pix); // 根据鼠标指针前后两个位置就行绘制直线
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pp.drawLine(
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lastPoint,
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endPoint); // 让前一个坐标值等于后一个坐标值，这样就能实现画出连续的线
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enable = false;
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}
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QPainter painter(this);
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painter.drawPixmap(0, 0, pix);
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drawStatus = idle;
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}
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void MainWindow::drawLineTriger() { drawStatus = line; }
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void MainWindow::on_drawLine_triggered() {
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enable = true;
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drawStatus = line;
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}
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void MainWindow::mousePressEvent(QMouseEvent *event) {
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if (event->button() == Qt::LeftButton) //鼠标左键按下
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if (drawing) {
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endPoint = event->pos();
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drawing = false;
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enable = true;
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update();
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} else {
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drawing = true;
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lastPoint = event->pos();
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}
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}
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