#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QColorDialog>
#include <QDebug>
#include <QDialog>
#include <QFileDialog>
#include <QFontDialog>
#include <QInputDialog>
#include <QMessageBox>
#include <QMouseEvent>
#include <QPainter>
#include <QProgressDialog>
bool enable = false;
bool drawing = false;
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent), ui(new Ui::MainWindow) {
  ui->setupUi(this);
  this->setProperty("canMove", false);
  resize(600, 500); //窗口大小设置为600*500
  pix = QPixmap(600, 500);
  pix.fill(Qt::white);
}

MainWindow::~MainWindow() { delete ui; }

void MainWindow::on_styCor_triggered() //边框颜色
{
  QPainter pp(&pix); // 根据鼠标指针前后两个位置就行绘制直线
  pp.drawLine(
      lastPoint,
      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
  lastPoint = endPoint;
  QPainter painter(this);
  painter.drawPixmap(0, 0, pix);
}

void MainWindow::paintEvent(QPaintEvent *event) {
  if (enable)
    switch (drawStatus) {
    case line:
      QPainter pp(&pix); // 根据鼠标指针前后两个位置就行绘制直线
      pp.drawLine(
          lastPoint,
          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
      enable = false;
    }
  QPainter painter(this);
  painter.drawPixmap(0, 0, pix);

  drawStatus = idle;
}
void MainWindow::drawLineTriger() { drawStatus = line; }

void MainWindow::on_drawLine_triggered() {
  enable = true;
  drawStatus = line;
}

void MainWindow::mousePressEvent(QMouseEvent *event) {

  if (event->button() == Qt::LeftButton) //鼠标左键按下
    if (drawing) {
      endPoint = event->pos();
      drawing = false;
      enable = true;
      update();
    } else {
      drawing = true;
      lastPoint = event->pos();
    }
}