122 lines
3.7 KiB
Python
122 lines
3.7 KiB
Python
from PyQt4 import QtGui, QtCore
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from PIL import Image
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class Component(QtCore.QObject):
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'''A base class for components to inherit from'''
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# modified = QtCore.pyqtSignal(int, bool)
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def __init__(self, moduleIndex, compPos):
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super().__init__()
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self.currentPreset = None
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self.moduleIndex = moduleIndex
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self.compPos = compPos
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def __str__(self):
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return self.__doc__
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def version(self):
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# change this number to identify new versions of a component
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return 1
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def cancel(self):
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# please stop any lengthy process in response to this variable
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self.canceled = True
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def reset(self):
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self.canceled = False
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def update(self):
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self.modified.emit(self.compPos, self.savePreset())
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# read your widget values, then call super().update()
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def loadPreset(self, presetDict, presetName):
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'''Children should take (presetDict, presetName=None) as args'''
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# Use super().loadPreset(presetDict, presetName)
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# Then update your widgets using the preset dict
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self.currentPreset = presetName \
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if presetName != None else presetDict['preset']
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'''
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def savePreset(self):
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return {}
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'''
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def preFrameRender(self, **kwargs):
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for var, value in kwargs.items():
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exec('self.%s = value' % var)
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def blankFrame(self, width, height):
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return Image.new("RGBA", (width, height), (0, 0, 0, 0))
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def pickColor(self):
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dialog = QtGui.QColorDialog()
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dialog.setOption(QtGui.QColorDialog.ShowAlphaChannel, True)
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color = dialog.getColor()
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if color.isValid():
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RGBstring = '%s,%s,%s' % (
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str(color.red()), str(color.green()), str(color.blue()))
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btnStyle = "QPushButton{background-color: %s; outline: none;}" \
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% color.name()
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return RGBstring, btnStyle
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else:
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return None, None
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def RGBFromString(self, string):
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''' turns an RGB string like "255, 255, 255" into a tuple '''
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try:
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tup = tuple([int(i) for i in string.split(',')])
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if len(tup) != 3:
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raise ValueError
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for i in tup:
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if i > 255 or i < 0:
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raise ValueError
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return tup
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except:
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return (255, 255, 255)
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'''
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### Reference methods for creating a new component
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### (Inherit from this class and define these)
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def widget(self, parent):
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self.parent = parent
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page = uic.loadUi(os.path.join(
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os.path.dirname(os.path.realpath(__file__)), 'example.ui'))
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# connect widgets signals
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self.page = page
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return page
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def update(self):
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super().update()
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self.parent.drawPreview()
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def previewRender(self, previewWorker):
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width = int(previewWorker.core.settings.value('outputWidth'))
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height = int(previewWorker.core.settings.value('outputHeight'))
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image = Image.new("RGBA", (width, height), (0,0,0,0))
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return image
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def frameRender(self, moduleNo, frameNo):
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width = int(self.worker.core.settings.value('outputWidth'))
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height = int(self.worker.core.settings.value('outputHeight'))
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image = Image.new("RGBA", (width, height), (0,0,0,0))
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return image
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def cancel(self):
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self.canceled = True
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def reset(self):
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self.canceled = False
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'''
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class BadComponentInit(Exception):
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def __init__(self, arg, name):
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string = \
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'''################################
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Mandatory argument "%s" not specified
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in %s instance initialization
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###################################'''
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print(string % (arg, name))
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quit()
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