panda3d/direct/src/gui/DirectFrame.py

from DirectGuiBase import *

class DirectFrame(DirectGuiWidget):
    def __init__(self, parent = aspect2d, **kw):
        # Inherits from DirectGuiWidget
        # A Direct Frame can have:
        # - A background texture (pass in path to image, or Texture Card)
        # - A midground geometry item (pass in geometry)
        # - A foreground text Node (pass in text string or Onscreen Text)
        # Each of these has 1 or more states
        # The same object can be used for all states or each
        # state can have a different text/geom/image (for radio button
        # and check button indicators, for example
        optiondefs = (
            # Define type of DirectGuiWidget
            ('pgFunc',          PGItem,     None),
            ('numStates',       1,          None),
            ('state',           self.inactiveInitState, None),
            # Frame can have:
            # A background texture
            ('image',           None,       self.setImage),
            # A midground geometry item
            ('geom',            None,       self.setGeom),
            # A foreground text node
            ('text',            None,       self.setText),
            ('textMayChange',   1,          None),
            )
        # Merge keyword options with default options
        self.defineoptions(kw, optiondefs,
                           dynamicGroups = ('text', 'geom', 'image'))

        # Initialize superclasses
        DirectGuiWidget.__init__(self, parent)
        
        # Call option initialization functions
        self.initialiseoptions(DirectFrame)

    def setText(self):
        # Determine if user passed in single string or a sequence
        if self['text'] == None:
            textList = (None,) * self['numStates']
        elif type(self['text']) == types.StringType:
            # If just passing in a single string, make a tuple out of it
            textList = (self['text'],) * self['numStates']
        else:
            # Otherwise, hope that the user has passed in a tuple/list
            textList = self['text']
        # Create/destroy components
        for i in range(self['numStates']):
            component = 'text' + `i`
            # If fewer items specified than numStates,
            # just repeat last item
            try:
                text = textList[i]
            except IndexError:
                text = textList[-1]
                
            if self.hascomponent(component):
                if text == None:
                    # Destroy component
                    self.destroycomponent(component)
                else:
                    self[component + '_text'] = text
            else:
                if text == None:
                    return
                else:
                    from OnscreenText import OnscreenText
                    self.createcomponent(
                        component, (), 'text',
                        OnscreenText,
                        (), parent = self.stateNodePath[i],
                        text = text, scale = 1,
                        sort = TEXT_SORT_INDEX,
                        mayChange = self['textMayChange'],
                        )

    def setGeom(self):
        # Determine argument type
        if self['geom'] == None:
            # Passed in None
            geomList = (None,) * self['numStates']
        elif isinstance(self['geom'], NodePath):
            # Passed in a single node path, make a tuple out of it
            geomList = (self['geom'],) * self['numStates']
        else:
            # Otherwise, hope that the user has passed in a tuple/list
            geomList = self['geom']
        # Create/destroy components
        for i in range(self['numStates']):
            component = 'geom' + `i`
            # If fewer items specified than numStates,
            # just repeat last item
            try:
                geom = geomList[i]
            except IndexError:
                geom = geomList[-1]
                
            if self.hascomponent(component):
                if geom == None:
                    # Destroy component
                    self.destroycomponent(component)
                else:
                    self[component + '_geom'] = geom
            else:
                if geom == None:
                    return
                else:
                    self.createcomponent(
                        component, (), 'geom',
                        OnscreenGeom,
                        (), parent = self.stateNodePath[i],
                        geom = geom, scale = 1,
                        sort = GEOM_SORT_INDEX)

    def setImage(self):
        # Determine argument type
        arg = self['image']
        if arg == None:
            # Passed in None
            imageList = (None,) * self['numStates']
        elif isinstance(arg, NodePath):
            imageList = (arg,) * self['numStates']
        elif type(arg) == types.StringType:
            # Passed in a single node path, make a tuple out of it
            imageList = (arg,) * self['numStates']
        else:
            # Otherwise, hope that the user has passed in a tuple/list
            if ((len(arg) == 2) and
                (type(arg[0]) == types.StringType) and
                (type(arg[1]) == types.StringType)):
                # Its a model/node pair of strings
                imageList = (arg,) * self['numStates']
            else:
                # Assume its a list of node paths
                imageList = arg
        # Create/destroy components
        for i in range(self['numStates']):
            component = 'image' + `i`
            # If fewer items specified than numStates,
            # just repeat last item
            try:
                image = imageList[i]
            except IndexError:
                image = imageList[-1]
                
            if self.hascomponent(component):
                if image == None:
                    # Destroy component
                    self.destroycomponent(component)
                else:
                    self[component + '_image'] = image
            else:
                if image == None:
                    return
                else:
                    self.createcomponent(
                        component, (), 'image',
                        OnscreenImage,
                        (), parent = self.stateNodePath[i],
                        image = image, scale = 1,
                        sort = IMAGE_SORT_INDEX)