Merge pull request #32 from djfun/newgui-commandline

making commandline features from master work with the new component system

6 files changed, 142 insertions, 18 deletions

diff --git a/components/__base__.py b/components/__base__.py
index 88f22d4..bef7f0e 100644
--- a/components/__base__.py
+++ b/components/__base__.py
@@ -1,5 +1,6 @@
 from PyQt4 import QtGui, QtCore
 from PIL import Image
+import os
 
 
 class Component(QtCore.QObject):
@@ -7,11 +8,12 @@ class Component(QtCore.QObject):
 
     # modified = QtCore.pyqtSignal(int, bool)
 
-    def __init__(self, moduleIndex, compPos):
+    def __init__(self, moduleIndex, compPos, core):
         super().__init__()
         self.currentPreset = None
         self.moduleIndex = moduleIndex
         self.compPos = compPos
+        self.core = core
 
     def __str__(self):
         return self.__doc__
@@ -32,24 +34,60 @@ class Component(QtCore.QObject):
         # read your widget values, then call super().update()
 
     def loadPreset(self, presetDict, presetName):
-        '''Children should take (presetDict, presetName=None) as args'''
-
-        # Use super().loadPreset(presetDict, presetName)
-        # Then update your widgets using the preset dict
+        '''Subclasses take (presetDict, presetName=None) as args.
+        Must use super().loadPreset(presetDict, presetName) first,
+        then update self.page widgets using the preset dict.
+        '''
         self.currentPreset = presetName \
             if presetName != None else presetDict['preset']
-    '''
-    def savePreset(self):
-        return {}
-    '''
+
     def preFrameRender(self, **kwargs):
+        '''Triggered only before a video is exported (video_thread.py)
+            self.worker = the video thread worker
+            self.completeAudioArray = a list of audio samples
+            self.sampleSize = number of audio samples per video frame
+            self.progressBarUpdate = signal to set progress bar number
+            self.progressBarSetText = signal to set progress bar text
+        Use the latter two signals to update the MainProgram if needed
+        for a long initialization procedure (i.e., for a visualizer)
+        '''
         for var, value in kwargs.items():
             exec('self.%s = value' % var)
 
+    def command(self, arg):
+        '''Configure a component using argument from the commandline.
+        Use super().command(arg) at the end of a subclass's method,
+        if no arguments are found in that method first
+        '''
+        if arg.startswith('preset='):
+            _, preset = arg.split('=', 1)
+            path = os.path.join(self.core.getPresetDir(self), preset)
+            if not os.path.exists(path):
+                print('Couldn\'t locate preset "%s"' % preset)
+                quit(1)
+            else:
+                print('Opening "%s" preset on layer %s' % \
+                    (preset, self.compPos))
+                self.core.openPreset(path, self.compPos, preset)
+        else:
+            print(
+                self.__doc__, 'Usage:\n'
+                'Open a preset for this component:\n'
+                '    "preset=Preset Name"')
+            self.commandHelp()
+            quit(0)
+
+    def commandHelp(self):
+        '''Print help text for this Component's commandline arguments'''
+
     def blankFrame(self, width, height):
         return Image.new("RGBA", (width, height), (0, 0, 0, 0))
 
     def pickColor(self):
+        '''Use color picker to get color input from the user,
+        and return this as an RGB string and QPushButton stylesheet.
+        In a subclass apply stylesheet to any color selection widgets
+        '''
         dialog = QtGui.QColorDialog()
         dialog.setOption(QtGui.QColorDialog.ShowAlphaChannel, True)
         color = dialog.getColor()
@@ -63,7 +101,7 @@ class Component(QtCore.QObject):
             return None, None
 
     def RGBFromString(self, string):
-        ''' turns an RGB string like "255, 255, 255" into a tuple '''
+        ''' 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:
@@ -83,7 +121,7 @@ class Component(QtCore.QObject):
         self.parent = parent
         page = uic.loadUi(os.path.join(
             os.path.dirname(os.path.realpath(__file__)), 'example.ui'))
-        # connect widgets signals
+        # --- connect widget signals here ---
         self.page = page
         return page
 
@@ -102,12 +140,6 @@ class Component(QtCore.QObject):
         height = int(self.worker.core.settings.value('outputHeight'))
         image = Image.new("RGBA", (width, height), (0,0,0,0))
         return image
-
-    def cancel(self):
-        self.canceled = True
-
-    def reset(self):
-        self.canceled = False
     '''
 
 class BadComponentInit(Exception):
diff --git a/components/color.py b/components/color.py
index cb75839..5ffcdea 100644
--- a/components/color.py
+++ b/components/color.py
@@ -233,3 +233,14 @@ class Component(__base__.Component):
         else:
             self.page.lineEdit_color2.setText(RGBstring)
             self.page.pushButton_color2.setStyleSheet(btnStyle)
+
+    def commandHelp(self):
+        print('Specify a color:\n    color=255,255,255')
+
+    def command(self, arg):
+        if not arg.startswith('preset=') and '=' in arg:
+            key, arg = arg.split('=', 1)
+            if key == 'color':
+                self.page.lineEdit_color1.setText(arg)
+                return
+        super().command(arg)
diff --git a/components/image.py b/components/image.py
index b6aa29b..f8ae64e 100644
--- a/components/image.py
+++ b/components/image.py
@@ -92,3 +92,20 @@ class Component(__base__.Component):
             self.settings.setValue("backgroundDir", os.path.dirname(filename))
             self.page.lineEdit_image.setText(filename)
             self.update()
+
+    def command(self, arg):
+        if not arg.startswith('preset=') and '=' in arg:
+            key, arg = arg.split('=', 1)
+            if key == 'path' and os.path.exists(arg):
+                try:
+                    Image.open(arg)
+                    self.page.lineEdit_image.setText(arg)
+                    self.page.checkBox_stretch.setChecked(True)
+                    return
+                except OSError as e:
+                    print("Not a supported image format")
+                    quit(1)
+        super().command(arg)
+
+    def commandHelp(self):
+        print('Load an image:\n    path=/filepath/to/image.png')
diff --git a/components/original.py b/components/original.py
index 5e2f9d4..6222157 100644
--- a/components/original.py
+++ b/components/original.py
@@ -183,3 +183,22 @@ class Component(__base__.Component):
 
         return im
 
+    def command(self, arg):
+        if not arg.startswith('preset=') and '=' in arg:
+            key, arg = arg.split('=', 1)
+            if key == 'color':
+                self.page.lineEdit_visColor.setText(arg)
+                return
+            elif key == 'layout':
+                if arg == 'classic':
+                    self.page.comboBox_visLayout.setCurrentIndex(0)
+                elif arg == 'split':
+                    self.page.comboBox_visLayout.setCurrentIndex(1)
+                elif arg == 'bottom':
+                    self.page.comboBox_visLayout.setCurrentIndex(2)
+                return
+        super().command(arg)
+
+    def commandHelp(self):
+        print('Give a layout name:\n    layout=[classic/split/bottom]')
+        print('Specify a color:\n    color=255,255,255')
diff --git a/components/text.py b/components/text.py
index f8ef7b3..2375dcd 100644
--- a/components/text.py
+++ b/components/text.py
@@ -19,12 +19,14 @@ class Component(__base__.Component):
     def widget(self, parent):
         height = int(parent.settings.value('outputHeight'))
         width = int(parent.settings.value('outputWidth'))
+
         self.parent = parent
         self.textColor = (255, 255, 255)
         self.title = 'Text'
         self.alignment = 1
         self.fontSize = height / 13.5
-        self.xPosition = width / 2
+        fm = QtGui.QFontMetrics(self.titleFont)
+        self.xPosition = width / 2 - fm.width(self.title)/2
         self.yPosition = height / 2 * 1.036
 
         page = uic.loadUi(os.path.join(
@@ -146,3 +148,29 @@ class Component(__base__.Component):
             return
         self.page.lineEdit_textColor.setText(RGBstring)
         self.page.pushButton_textColor.setStyleSheet(btnStyle)
+
+    def commandHelp(self):
+        print('Enter a string to use as centred white text:')
+        print('    "title=User Error"')
+        print('Specify a text color:\n    color=255,255,255')
+        print('Set custom x, y position:\n    x=500 y=500')
+
+    def command(self, arg):
+        if not arg.startswith('preset=') and '=' in arg:
+            key, arg = arg.split('=', 1)
+            if key == 'color':
+                self.page.lineEdit_textColor.setText(arg)
+                return
+            elif key == 'size':
+                self.page.spinBox_fontSize.setValue(int(arg))
+                return
+            elif key == 'x':
+                self.page.spinBox_xTextAlign.setValue(int(arg))
+                return
+            elif key == 'y':
+                self.page.spinBox_yTextAlign.setValue(int(arg))
+                return
+            elif key == 'title':
+                self.page.lineEdit_title.setText(arg)
+                return
+        super().command(arg)
diff --git a/components/video.py b/components/video.py
index 3d43a18..1d250bd 100644
--- a/components/video.py
+++ b/components/video.py
@@ -221,6 +221,23 @@ class Component(__base__.Component):
             width, height = scale(self.scale, width, height, int)
         self.chunkSize = 4*width*height
 
+    def command(self, arg):
+        if not arg.startswith('preset=') and '=' in arg:
+            key, arg = arg.split('=', 1)
+            if key == 'path' and os.path.exists(arg):
+                if os.path.splitext(arg)[1] in self.core.videoFormats:
+                    self.page.lineEdit_video.setText(arg)
+                    self.page.spinBox_scale.setValue(100)
+                    self.page.checkBox_loop.setChecked(True)
+                    return
+                else:
+                    print("Not a supported video format")
+                    quit(1)
+        super().command(arg)
+
+    def commandHelp(self):
+        print('Load a video:\n    path=/filepath/to/video.mp4')
+
 def scale(scale, width, height, returntype=None):
     width = (float(width) / 100.0) * float(scale)
     height = (float(height) / 100.0) * float(scale)