added component base class

components/__base__.py

@@ -0,0 +1,57 @@
+from PyQt4 import QtGui
+
+class Component:
+    def __str__(self):
+        return self.__doc__
+        
+    def preFrameRender(self, **kwargs):
+        for kwarg, value in kwargs.items():
+            exec('self.%s = value' % kwarg)
+
+    def pickColor(self):
+        color = QtGui.QColorDialog.getColor()
+        if color.isValid():
+           RGBstring = '%s,%s,%s' % (str(color.red()), str(color.green()), str(color.blue()))
+           btnStyle = "QPushButton { background-color : %s; outline: none; }" % color.name()
+        return RGBstring, btnStyle
+
+    def RGBFromString(self, string):
+       ''' turns an RGB string like "255, 255, 255" into a tuple '''
+       try:
+         tup = tuple([int(i) for i in string.split(',')])
+         if len(tup) != 3:
+            raise ValueError
+         for i in tup:
+            if i > 255 or i < 0:
+               raise ValueError
+         return tup
+       except:
+         return (255, 255, 255)
+
+    '''
+    ### Reference methods for creating a new component
+    ### (Inherit from this class and define these)
+    
+    def widget(self, parent):
+        self.parent = parent
+        page = uic.loadUi(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'example.ui'))
+        # connect widgets signals
+        self.page = page
+        return page
+
+    def update(self):
+        # read widget values
+        self.parent.drawPreview()
+        
+    def previewRender(self, previewWorker):
+        width = int(previewWorker.core.settings.value('outputWidth'))
+        height = int(previewWorker.core.settings.value('outputHeight'))
+        image = Image.new("RGBA", (width, height), (0,0,0,0))
+        return image
+        
+    def frameRender(self, moduleNo, frameNo):
+        width = int(self.worker.core.settings.value('outputWidth'))
+        height = int(self.worker.core.settings.value('outputHeight'))
+        image = Image.new("RGBA", (width, height), (0,0,0,0))
+        return image
+    '''

components/original.py

@@ -1,15 +1,13 @@
-''' Original Audio Visualization '''
 import numpy
 from PIL import Image, ImageDraw
 from PyQt4 import uic, QtGui
 from PyQt4.QtGui import QColor
 import os, random
+from . import __base__
 
 
-class Component:
-    def __str__(self):
-        return __doc__
-        
+class Component(__base__.Component):
+    '''Original Audio Visualization'''
     def widget(self, parent):
         self.parent = parent
         self.visColor = (255,255,255)
@@ -31,7 +29,7 @@ class Component:
     
     def update(self):
         self.layout = self.page.comboBox_visLayout.currentIndex()
-        self.visColor = RGBFromString(self.page.lineEdit_visColor.text())
+        self.visColor = self.RGBFromString(self.page.lineEdit_visColor.text())
         self.parent.drawPreview()
 
     def previewRender(self, previewWorker):
@@ -41,8 +39,7 @@ class Component:
         return drawBars(width, height, spectrum, self.visColor, self.layout)
     
     def preFrameRender(self, **kwargs):
-        for kwarg, value in kwargs.items():
-            exec('self.%s = value' % kwarg)
+        super().preFrameRender(**kwargs)
         self.smoothConstantDown = 0.08
         self.smoothConstantUp = 0.8
         self.lastSpectrum = None
@@ -55,12 +52,9 @@ class Component:
         return drawBars(width, height, self.lastSpectrum, self.visColor, self.layout)
 
     def pickColor(self):
-        color = QtGui.QColorDialog.getColor()
-        if color.isValid():
-           RGBstring = '%s,%s,%s' % (str(color.red()), str(color.green()), str(color.blue()))
-           btnStyle = "QPushButton { background-color : %s; outline: none; }" % color.name()
-           self.page.lineEdit_visColor.setText(RGBstring)
-           self.page.pushButton_visColor.setStyleSheet(btnStyle)
+        RGBstring, btnStyle = super().pickColor()
+        self.page.lineEdit_visColor.setText(RGBstring)
+        self.page.pushButton_visColor.setStyleSheet(btnStyle)
 
 def transformData(i, completeAudioArray, sampleSize, smoothConstantDown, smoothConstantUp, lastSpectrum):
     if len(completeAudioArray) < (i + sampleSize):
@@ -130,16 +124,3 @@ def drawBars(width, height, spectrum, color, layout):
       im.paste(imTop, (0, y), mask=imTop)
 
     return im
-
-def RGBFromString(string):
-   ''' turns an RGB string like "255, 255, 255" into a tuple '''
-   try:
-     tup = tuple([int(i) for i in string.split(',')])
-     if len(tup) != 3:
-        raise ValueError
-     for i in tup:
-        if i > 255 or i < 0:
-           raise ValueError
-     return tup
-   except:
-     return (255, 255, 255)

components/text.py

@@ -1,15 +1,13 @@
-''' Title Text '''
 from PIL import Image, ImageDraw
 from PyQt4.QtGui import QPainter, QColor, QFont
 from PyQt4 import uic, QtGui, QtCore
 from PIL.ImageQt import ImageQt
 import os, io
+from . import __base__
 
 
-class Component:
-    def __str__(self):
-        return __doc__
-        
+class Component(__base__.Component):
+    '''Title Text'''
     def widget(self, parent):
         height = int(parent.settings.value('outputHeight'))
         width = int(parent.settings.value('outputWidth'))
@@ -62,7 +60,7 @@ class Component:
         self.fontSize = self.page.spinBox_fontSize.value()
         self.xPosition = self.page.spinBox_xTextAlign.value()
         self.yPosition = self.page.spinBox_yTextAlign.value()
-        self.textColor = RGBFromString(self.page.lineEdit_textColor.text())
+        self.textColor = self.RGBFromString(self.page.lineEdit_textColor.text())
         fm = QtGui.QFontMetrics(self.titleFont)
         if self.alignment == 0:      #Left
            self.xPosition = self.xPosition
@@ -77,10 +75,6 @@ class Component:
         width = int(previewWorker.core.settings.value('outputWidth'))
         height = int(previewWorker.core.settings.value('outputHeight'))
         return self.addText(width, height)
-
-    def preFrameRender(self, **kwargs):
-        for kwarg, value in kwargs.items():
-            exec('self.%s = value' % kwarg)
         
     def frameRender(self, moduleNo, frameNo):
         width = int(self.worker.core.settings.value('outputWidth'))
@@ -112,22 +106,6 @@ class Component:
         return Image.open(strio)
 
     def pickColor(self):
-        color = QtGui.QColorDialog.getColor()
-        if color.isValid():
-           RGBstring = '%s,%s,%s' % (str(color.red()), str(color.green()), str(color.blue()))
-           btnStyle = "QPushButton { background-color : %s; outline: none; }" % color.name()
-           self.page.lineEdit_textColor.setText(RGBstring)
-           self.page.pushButton_textColor.setStyleSheet(btnStyle)
-
-def RGBFromString(string):
-   ''' turns an RGB string like "255, 255, 255" into a tuple '''
-   try:
-     tup = tuple([int(i) for i in string.split(',')])
-     if len(tup) != 3:
-        raise ValueError
-     for i in tup:
-        if i > 255 or i < 0:
-           raise ValueError
-     return tup
-   except:
-     return (255, 255, 255)
+        RGBstring, btnStyle = super().pickColor()
+        self.page.lineEdit_textColor.setText(RGBstring)
+        self.page.pushButton_textColor.setStyleSheet(btnStyle)

main.py

@@ -149,7 +149,7 @@ class Main(QtCore.QObject):
 
     self.modules = self.findComponents()
     for component in self.modules:
-        window.comboBox_componentSelection.addItem(component.__doc__)
+        window.comboBox_componentSelection.addItem(component.Component.__doc__)
     window.listWidget_componentList.clicked.connect(lambda _: self.changeComponentWidget())
     self.selectedComponents = []
 
@@ -290,8 +290,8 @@ class Main(QtCore.QObject):
 
   def addComponent(self, moduleIndex):
     index = len(self.pages)
-    self.window.listWidget_componentList.addItem(self.modules[moduleIndex].__doc__)
     self.selectedComponents.append(self.modules[moduleIndex].Component())
+    self.window.listWidget_componentList.addItem(self.selectedComponents[-1].__doc__)
     self.pages.append(self.selectedComponents[-1].widget(self))
     self.window.listWidget_componentList.setCurrentRow(index)
     self.window.stackedWidget.addWidget(self.pages[-1])