ENH: Let Qt handle most of the window sizing.

skimage/viewer/plugins/base.py

@@ -28,16 +28,17 @@ class Plugin(QtGui.QDialog):
     name = 'Plugin'
     draws_on_image = False
 
-    def __init__(self, image_filter=None, height=100, width=400, useblit=None):
-        QtGui.QDialog.__init__(self)
+    def __init__(self, image_filter=None, height=0, width=400, useblit=None):
+        super(Plugin, self).__init__()
+
         self.image_viewer = None
+        if image_filter is not None:
+            self.image_filter = image_filter
 
         self.setWindowTitle(self.name)
         self.layout = QtGui.QGridLayout(self)
         self.resize(width, height)
         self.row = 0
-        if image_filter is not None:
-            self.image_filter = image_filter
 
         self.arguments = []
         self.keyword_arguments= {}

skimage/viewer/plugins/canny.py

@@ -9,8 +9,6 @@ class CannyPlugin(OverlayPlugin):
     name = 'Canny Filter'
 
     def __init__(self, *args, **kwargs):
-        kwargs.setdefault('height', 100)
-        kwargs.setdefault('width', 400)
         super(CannyPlugin, self).__init__(**kwargs)
 
         self.add_widget(Slider('sigma', 0, 5, update_on='release'))

skimage/viewer/plugins/lineprofile.py

@@ -34,8 +34,7 @@ class LineProfile(PlotPlugin):
     draws_on_image = True
 
     def __init__(self, useblit=None, linewidth=1, epsilon=5, limits='image'):
-        super(LineProfile, self).__init__(height=200, width=600,
-                                          useblit=useblit)
+        super(LineProfile, self).__init__(useblit=useblit)
         self.linewidth = linewidth
         self.epsilon = epsilon
         self._active_pt = None

skimage/viewer/plugins/plotplugin.py

@@ -23,6 +23,7 @@ class PlotCanvas(FigureCanvasQTAgg):
         FigureCanvasQTAgg.updateGeometry(self)
         # Note: `setParent` must be called after `FigureCanvasQTAgg.__init__`.
         self.setParent(parent)
+        self.setMinimumHeight(150)
 
 
 class PlotPlugin(Plugin):