don't merge undos when setting text with a button

plus changes to life.py for pep8 compliance

src/component.py

@@ -285,6 +285,7 @@ class Component(QtCore.QObject, metaclass=ComponentMetaclass):
 
         # LOCKING VARIABLES
         self.openingPreset = False
+        self.mergeUndo = True
         self._lockedProperties = None
         self._lockedError = None
         self._lockedSize = None
@@ -587,10 +588,12 @@ class Component(QtCore.QObject, metaclass=ComponentMetaclass):
             if kwarg == 'colorWidgets':
                 def makeColorFunc(attr):
                     def pickColor_():
+                        self.mergeUndo = False
                         self.pickColor(
                             self._trackedWidgets[attr],
                             self._colorWidgets[attr]
                         )
+                        self.mergeUndo = True
                     return pickColor_
                 self._colorFuncs = {
                     attr: makeColorFunc(attr) for attr in kwargs[kwarg]
@@ -850,7 +853,7 @@ class ComponentUpdate(QtWidgets.QUndoCommand):
 
         # Determine if this update is mergeable
         self.id_ = -1
-        if len(self.modifiedVals) == 1:
+        if len(self.modifiedVals) == 1 and self.parent.mergeUndo:
             attr, val = self.modifiedVals.popitem()
             self.id_ = sum([ord(letter) for letter in attr[-14:]])
             self.modifiedVals[attr] = val

src/components/image.py

@@ -83,7 +83,9 @@ class Component(Component):
             "Image Files (%s)" % " ".join(self.core.imageFormats))
         if filename:
             self.settings.setValue("componentDir", os.path.dirname(filename))
+            self.mergeUndo = False
             self.page.lineEdit_image.setText(filename)
+            self.mergeUndo = True
 
     def command(self, arg):
         if '=' in arg:

src/components/life.py

@@ -35,6 +35,7 @@ class Component(Component):
             self.page.toolButton_left,
             self.page.toolButton_right,
         )
+
         def shiftFunc(i):
             def shift():
                 self.shiftGrid(i)
@@ -52,7 +53,9 @@ class Component(Component):
             "Image Files (%s)" % " ".join(self.core.imageFormats))
         if filename:
             self.settings.setValue("componentDir", os.path.dirname(filename))
+            self.mergeUndo = False
             self.page.lineEdit_image.setText(filename)
+            self.mergeUndo = True
 
     def shiftGrid(self, d):
         def newGrid(Xchange, Ychange):
@@ -197,7 +200,7 @@ class Component(Component):
             # Circle
             if shape == 'circle':
                 drawer.ellipse(outlineShape, fill=self.color)
-                drawer.ellipse(smallerShape, fill=(0,0,0,0))
+                drawer.ellipse(smallerShape, fill=(0, 0, 0, 0))
 
             # Lilypad
             elif shape == 'lilypad':
@@ -207,9 +210,9 @@ class Component(Component):
             elif shape == 'pac-man':
                 drawer.pieslice(outlineShape, 35, 320, fill=self.color)
 
-            hX, hY = scale(50, self.pxWidth, self.pxHeight, int) # halfline
+            hX, hY = scale(50, self.pxWidth, self.pxHeight, int)  # halfline
-            tX, tY = scale(33, self.pxWidth, self.pxHeight, int) # thirdline
+            tX, tY = scale(33, self.pxWidth, self.pxHeight, int)  # thirdline
-            qX, qY = scale(20, self.pxWidth, self.pxHeight, int) # quarterline
+            qX, qY = scale(20, self.pxWidth, self.pxHeight, int)  # quarterline
 
             # Path
             if shape == 'path':
@@ -245,19 +248,19 @@ class Component(Component):
                             sect = (
                                 (drawPtX, drawPtY + hY),
                                 (drawPtX + self.pxWidth,
-                                drawPtY + self.pxHeight)
+                                    drawPtY + self.pxHeight)
                             )
                         elif direction == 'left':
                             sect = (
                                 (drawPtX, drawPtY),
                                 (drawPtX + hX,
-                                drawPtY + self.pxHeight)
+                                    drawPtY + self.pxHeight)
                             )
                         elif direction == 'right':
                             sect = (
                                 (drawPtX + hX, drawPtY),
                                 (drawPtX + self.pxWidth,
-                                drawPtY + self.pxHeight)
+                                    drawPtY + self.pxHeight)
                             )
                         drawer.rectangle(sect, fill=self.color)
 
@@ -287,20 +290,25 @@ class Component(Component):
 
             # Peace
             elif shape == 'peace':
-                line = (
+                line = ((
-                    (drawPtX + hX - int(tenthX / 2), drawPtY + int(tenthY / 2)),
+                    drawPtX + hX - int(tenthX / 2), drawPtY + int(tenthY / 2)),
                     (drawPtX + hX + int(tenthX / 2),
-                    drawPtY + self.pxHeight - int(tenthY / 2))
+                        drawPtY + self.pxHeight - int(tenthY / 2))
                 )
                 drawer.ellipse(outlineShape, fill=self.color)
-                drawer.ellipse(smallerShape, fill=(0,0,0,0))
+                drawer.ellipse(smallerShape, fill=(0, 0, 0, 0))
                 drawer.rectangle(line, fill=self.color)
-                slantLine = lambda difference: (
+
-                    ((drawPtX + difference),
+                def slantLine(difference):
-                        (drawPtY + self.pxHeight - qY)),
+                    return (
-                    ((drawPtX + hX),
+                        (drawPtX + difference),
-                        (drawPtY + hY)),
+                        (drawPtY + self.pxHeight - qY)
-                )
+                    ),
+                    (
+                        (drawPtX + hX),
+                        (drawPtY + hY)
+                    )
+
                 drawer.line(
                     slantLine(qX),
                     fill=self.color,
@@ -337,13 +345,13 @@ class Component(Component):
             for x in range(self.pxWidth, self.width, self.pxWidth):
                 drawer.rectangle(
                     ((x, 0),
-                    (x + w, self.height)),
+                        (x + w, self.height)),
                     fill=self.color,
                 )
             for y in range(self.pxHeight, self.height, self.pxHeight):
                 drawer.rectangle(
                     ((0, y),
-                    (self.width, y + h)),
+                        (self.width, y + h)),
                     fill=self.color,
                 )
 

src/components/sound.py

@@ -52,7 +52,9 @@ class Component(Component):
             "Audio Files (%s)" % " ".join(self.core.audioFormats))
         if filename:
             self.settings.setValue("componentDir", os.path.dirname(filename))
+            self.mergeUndo = False
             self.page.lineEdit_sound.setText(filename)
+            self.mergeUndo = True
 
     def commandHelp(self):
         print('Path to audio file:\n    path=/filepath/to/sound.ogg')

src/components/video.py

@@ -117,7 +117,9 @@ class Component(Component):
         )
         if filename:
             self.settings.setValue("componentDir", os.path.dirname(filename))
+            self.mergeUndo = False
             self.page.lineEdit_video.setText(filename)
+            self.mergeUndo = True
 
     def getPreviewFrame(self, width, height):
         if not self.videoPath or not os.path.exists(self.videoPath):

src/gui/actions.py

@@ -32,7 +32,6 @@ class AddComponent(QUndoCommand):
             self.parent.core.insertComponent(
                 self.compI, self.comp, self.parent)
 
-
     def undo(self):
         self.comp = self.parent.core.selectedComponents[self.compI]
         self.parent._removeComponent(self.compI)