Import LinuxCNC source tree

lib/python/qtvcp/widgets/action_button_round.py

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+#!/usr/bin/env python3
+# Qtvcp widget
+#
+# Copyright (c) 2017  Chris Morley <chrisinnanaimo@hotmail.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# This is an extension of action buttons to show a round button image.
+# Action buttons are used to control linuxcnc behavior by pressing.
+# By making the button 'checkable' in the designer editor,
+# the button will toggle.
+# In the designer editor, it is possible to select what the button will do.
+###############################################################################
+
+from qtpy import QtGui, QtCore
+
+from qtvcp.widgets.action_button import ActionButton
+
+class RoundButton(ActionButton):
+    def __init__(self, parent=None):
+        super(RoundButton, self).__init__(parent)
+        self.setCheckable(True)
+        self.setWindowFlags(QtCore.Qt.FramelessWindowHint)
+        self.pixmap = QtGui.QPixmap()
+        self.false_pixmap = QtGui.QPixmap()
+        self.clip_region = QtGui.QRegion(QtCore.QRect(5, 5, self.width()-10, self.height()-10), QtGui.QRegion.Ellipse)
+
+    def action(self, state):
+        super(RoundButton, self).action(state)
+        self.setMask(self.clip_region)
+
+    def resizeEvent(self, event):
+        self.clip_region = QtGui.QRegion(QtCore.QRect(5, 5, self.width()-10, self.height()-10), QtGui.QRegion.Ellipse)
+        self.setMask(self.clip_region)
+
+    def paintEvent(self, event):
+        p = QtGui.QPainter(self)
+        if self.isChecked():
+            if not self.pixmap.isNull():
+                p.drawPixmap(event.rect(), self.pixmap)
+                return
+        else:
+            if not self.false_pixmap.isNull():
+                p.drawPixmap(event.rect(), self.false_pixmap)
+                return
+        super(RoundButton, self).paintEvent(event)
+
+    #########################################################################
+    # This is how designer can interact with our widget properties.
+    # designer will show the Property properties in the editor
+    # it will use the get set and reset calls to do those actions
+    #########################################################################
+
+    def setImagePath(self, data):
+        self.pixmap = data
+    def getImagePath(self):
+        return self.pixmap
+    def resetImagePath(self):
+        self.pixmap
+
+    def setFalseImagePath(self, data):
+        self.false_pixmap = data
+    def getFalseImagePath(self):
+        return self.false_pixmap
+    def resetFalseImagePath(self):
+        self.false_pixmap
+
+    image_path = QtCore.Property(QtGui.QPixmap, getImagePath, setImagePath, resetImagePath)
+    false_image_path = QtCore.Property(QtGui.QPixmap, getFalseImagePath, setFalseImagePath, resetFalseImagePath)
+
+# for testing without editor:
+def main():
+    import sys
+    from qtpy.QtWidgets import QApplication
+    app = QApplication(sys.argv)
+    widget = RoundButton()
+    widget.show()
+    sys.exit(app.exec())
+if __name__ == "__main__":
+    main()
+