add custom colorbutton widget

openlp/core/lib/__init__.py

@@ -318,6 +318,7 @@ def create_separated_list(string_list):
         return translate('OpenLP.core.lib', '%s, %s', 'Locale list separator: start') % (string_list[0], merged)
 
 
+from .colorbutton import ColorButton
 from .filedialog import FileDialog
 from .screen import ScreenList
 from .listwidgetwithdnd import ListWidgetWithDnD

openlp/core/lib/colorbutton.py

@@ -0,0 +1,33 @@
+from PyQt4 import QtCore, QtGui
+
+class ColorButton(QtGui.QPushButton):
+    """
+    Subclasses QPushbutton to create a "Color Chooser" button
+    """
+
+    colorChanged = QtCore.pyqtSignal(str)
+
+    def __init__(self, parent):
+        super(ColorButton, self).__init__()
+        self._color = '#ffffff'
+        self.parent = parent
+        self.clicked.connect(self.on_clicked)
+
+    def change_color(self, color):
+        self._color = color
+        self.setStyleSheet('background-color: %s' % color)
+
+    @property
+    def color(self):
+        return self._color
+
+    @color.setter
+    def color(self, color):
+        self.change_color(color)
+
+    def on_clicked(self):
+        new_color = QtGui.QColorDialog.getColor(QtGui.QColor(self._color), self.parent)
+        if new_color.isValid() and self._color != new_color.name():
+            self.change_color(new_color.name())
+            print("changed")
+            self.colorChanged.emit(new_color.name())