Rework GUI.

Work-in-progress state of the new gui.

Change-Id: Ib5e9ad2178b372fbd2914077096a9c73f025ecb7

frappy/gui/collapsible.py

@@ -0,0 +1,50 @@
+from frappy.gui.qt import QToolButton, QFrame, QWidget, QGridLayout, QSizePolicy, QVBoxLayout, Qt
+
+class CollapsibleWidget(QWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.button = QToolButton()
+        self.widget = QWidget()
+        self.widgetContainer = QWidget()
+
+        self.button.setArrowType(Qt.RightArrow)
+        self.button.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
+        self.button.setStyleSheet("QToolButton { border: none; }")
+        self.button.setCheckable(True)
+        self.button.toggled.connect(self._collapse)
+
+        line = QFrame()
+        line.setFrameShape(QFrame.HLine)
+        line.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Maximum)
+
+        l = QVBoxLayout()
+        l.addWidget(self.widget)
+        self.widgetContainer.setLayout(l)
+        self.widgetContainer.setMaximumHeight(0)
+
+        layout = QGridLayout()
+        layout.addWidget(self.button, 0, 0, Qt.AlignLeft)
+        layout.addWidget(line, 0, 1, 1, 1)
+        layout.addWidget(self.widgetContainer, 1, 0, -1, -1)
+        self.setLayout(layout)
+
+    def _collapse(self, expand):
+        if expand:
+            self.button.setArrowType(Qt.DownArrow)
+            self.widgetContainer.setMaximumHeight(self.widget.maximumHeight())
+        else:
+            self.button.setArrowType(Qt.RightArrow)
+            self.widgetContainer.setMaximumHeight(0)
+            self.setMaximumHeight(self.button.maximumHeight())
+
+    def replaceWidget(self, widget):
+        layout = self.widgetContainer.layout()
+        layout.removeWidget(self.widget)
+        self.widget = widget
+        layout.addWidget(self.widget)
+
+    def setTitle(self, title):
+        self.button.setText(title)
+
+    def getWidget(self):
+        return self.widget