截图画矩形

README.md

@@ -23,4 +23,6 @@
 
 ### 10.<a href="自定义QWidget的QSS样式">自定义QWidget的QSS样式</a><br />
 
-### 11.<a href="浏览器获取Cookie">浏览器获取Cookie</a><br />
+### 11.<a href="浏览器获取Cookie">浏览器获取Cookie</a><br />
+
+### 12.<a href="截图画矩形">截图画矩形</a><br />

截图画矩形/DrawRectangle.py

@@ -0,0 +1,104 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+'''
+Created on 2017年12月10日
+@author: Irony."[讽刺]
+@site: http://alyl.vip, http://orzorz.vip, https://coding.net/u/892768447, https://github.com/892768447
+@email: 892768447@qq.com
+@file: DrawRectangle
+@description: 
+'''
+import sys
+
+from PyQt5.QtCore import Qt, QRect, QRectF
+from PyQt5.QtGui import QPainter, QColor, QPen, QPainterPath
+from PyQt5.QtWidgets import QApplication, QDialog
+
+
+__Author__ = "By: Irony.\"[讽刺]\nQQ: 892768447\nEmail: 892768447@qq.com"
+__Copyright__ = "Copyright (c) 2017 Irony.\"[讽刺]"
+__Version__ = "Version 1.0"
+
+
+class DrawRectangle(QDialog):
+
+    def __init__(self, *args, **kwargs):
+        super(DrawRectangle, self).__init__(*args, **kwargs)
+        self.pressed = False
+        self.moved = False
+        self.rectArea = QRect()  # 矩形框
+        self.rectPen = QPen(QColor(22, 168, 250))
+        self.rectPen.setWidth(1)
+        self.setMouseTracking(True)
+        self.setWindowFlags(Qt.FramelessWindowHint)
+        self.setAttribute(Qt.WA_TranslucentBackground, True)
+        self.showMaximized()
+        # 通过绑定自定义右键菜单来监听右键点击,实现重新画区域或者退出,或者弹出菜单
+        self.setContextMenuPolicy(Qt.CustomContextMenu)
+        self.customContextMenuRequested.connect(self.onRightClicked)
+
+    def onRightClicked(self, _):
+        if not self.rectArea.isNull():
+            self.rectArea.setWidth(0)
+            self.rectArea.setHeight(0)  # clear
+            return self.update()
+        self.close()
+
+    def mousePressEvent(self, event):
+        if event.buttons() == Qt.LeftButton:
+            self.pressed = True
+#             if not self.rectArea.isNull():
+#                 self.moved = self.rectArea.contains(
+#                     event.pos())  # 设置画好的窗口可整体移动
+#                 return
+            self.rectArea.setTopLeft(event.pos())  # 设置左上角位置
+
+    def mouseReleaseEvent(self, event):
+        self.pressed = False
+        self.moved = False
+        super(DrawRectangle, self).mouseReleaseEvent(event)
+
+    def mouseMoveEvent(self, event):
+        pos = event.pos()
+#         if self.moved and not self.rectArea.isNull():  # 表示移动整体画好的矩形框
+#             # 重新设置矩形框的位置
+#             self.rectArea.setX(pos.x())
+#             self.rectArea.setY(pos.y())
+#             return self.update()
+        if not self.pressed:
+            if not self.rectArea.isNull():
+                if self.rectArea.contains(pos):
+                    # 设置鼠标形状为十字箭头
+                    return self.setCursor(Qt.SizeAllCursor)
+            # 设置鼠标为普通形状
+            return self.setCursor(Qt.ArrowCursor)
+        self.rectArea.setBottomRight(pos)  # 设置右下角位置
+        self.update()
+
+    def paintEvent(self, event):
+        painter = QPainter(self)
+        if self.rectArea.isNull():
+            # 窗口背景全部半透明颜色
+            return painter.fillRect(self.rect(), QColor(0, 0, 0, 50))
+
+        # 画外围背景,去掉中间绘制的矩形框
+        path = QPainterPath()
+        path.setFillRule(Qt.OddEvenFill)
+        path.addRect(QRectF(self.rect()))
+        path.addRect(QRectF(self.rectArea))
+        painter.fillPath(path, QColor(0, 0, 0, 50))
+        # 画矩形
+        painter.save()
+        painter.setPen(self.rectPen)
+        painter.drawRect(self.rectArea)  # 画矩形框
+        # 背景用白色透明遮住,防止鼠标穿透到桌面
+        painter.fillRect(self.rectArea, QColor(255, 255, 255, 1))
+        painter.restore()
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+    w = DrawRectangle()
+    w.show()
+    sys.exit(app.exec_())

截图画矩形/README.md

@@ -0,0 +1,5 @@
+# 仿截图软件画矩形框,暂时只实现了矩形框的绘制,框的移动和大小调整还未实现<br />
+右键退出矩形框或退出程序
+
+# 截图
+<img src="ScreenShot/1.gif" />