# Copyright 2004-2011 Tom Rothamel <pytom@bishoujo.us>
# See LICENSE.txt for license details.

init python:
    
    # Styles
    style.prefs_frame = Style(style.default, help="the frame containing all of the preferences")
    style.prefs_frame_box = Style(style.default, help="the box inside the frame containing all of the preferences")
    
    style.prefs_pref_frame = Style(style.menu_frame, help="a frame containing a single preference")
    style.prefs_pref_box = Style(style.vbox, help="the box separating the preference label from the preference choices")
    style.prefs_pref_choicebox = Style(style.vbox, help="the box containing the preference choices")

    style.prefs_label = Style(style.label, help="a preference label (window)")
    style.prefs_label_text = Style(style.label_text, help="a preference label (text)")

    style.prefs_button = Style(style.radio_button, help="preference value button")
    style.prefs_button_text = Style(style.radio_button_text, help="preference value button (text)")

    style.prefs_slider = Style(style.slider, help="preference value slider bar")

    style.prefs_volume_box = Style(style.vbox, help="box containing a volume slider and soundtest button")
    style.prefs_volume_slider = Style(style.prefs_slider, help="volume slider bar")
    
    style.soundtest_button = Style(style.small_button, help="soundtest button")
    style.soundtest_button_text = Style(style.small_button_text, help="soundtest button (text)")

    style.prefs_jump = Style(style.prefs_pref_frame, help="jump preference frame")
    style.prefs_jump_button = Style(style.button, help="jump preference button")
    style.prefs_jump_button_text = Style(style.button_text, help="jump preference button (text)")
    
    # This is a map from the name of the style that is applied to
    # a list of preferences that should be placed into a vbox
    # with that style.
    config.preferences = { }

    # This is a map from preference name to that preference
    # object, that can be used in rearranging preferences.
    config.all_preferences = { }

    # Should the soundtest button be before the volume slider?
    config.soundtest_before_volume = False
    
    def _prefs_screen_run(prefs_map):

        layout.navigation("preferences")
        
        ui.window(style='prefs_frame')
        ui.fixed(style='prefs_frame_box')

        for style, prefs in prefs_map.iteritems():

            ui.vbox(style=style)
            for i in prefs:
                i.render()
            ui.close()

        ui.close()

        ui.interact(mouse="gamemenu")

    class _Preference(object):
        """
        This is a class that's used to represent a multiple-choice
        preference.
        """

        def __init__(self, name, field, values, base=_preferences):
            """
            @param name: The name of this preference. It will be
            displayed to the user.

            @param variable: The field on the base object
            that will be assigned the selected value. This field
            must exist.

            @param values: A list of value name, value, condition
            triples. The value name is the name of this value that
            will be shown to the user. The value is the literal
            python value that will be assigned if this value is
            selected. The condition is a condition that will be
            evaluated to determine if this is a legal value. If no
            conditions are true, this preference will not be
            displayed to the user. A condition of None is always
            considered to be True.

            @param base: The base object on which the variable is
               read from and set. This defaults to _preferences,
               the user preferences object.
            """

            self.name = name
            self.field = field
            self.values = values
            self.base = base

            config.all_preferences[name] = self

            
        def render(self):
            values = [ (name, val) for name, val, cond in self.values
                       if cond is None or renpy.eval(cond) ]

            if not values:
                return

            ui.window(style=style.prefs_pref_frame[self.name])
            ui.vbox(style=style.prefs_pref_box[self.name])

            layout.label(self.name, "prefs")

            cur = getattr(self.base, self.field)

            ui.hbox(style=style.prefs_pref_choicebox[self.name])

            for name, value in values:
                def clicked(value=value):
                    setattr(self.base, self.field, value)
                    return True

                layout.button(name, "prefs",
                              selected=(cur==value),
                              clicked=clicked)

            ui.close() # choicebox
            ui.close() # vbox

    class _VolumePreference(object):
        """
        This represents a preference that controls one of the
        volumes in the system. It is represented as a slider bar,
        and a button that can be pushed to play a sample sound on
        a channel.
        """

        def __init__(self, name, mixer, enable='True', sound='None', channel="sound"):
            """
            @param name: The name of this preference, as shown to the user.

            @param mixer: The mixer this preference controls.

            @param enable: A string giving a python expression. If
            the expression is evaluates to false, this preference
            is not shown.

            @param sound: A string that is evaluated to yield
            another string. The yielded string is expected to give
            a sound file, which is played as the sample sound. (We
            apologize for the convolution of this.)

            @param channel: The number of the channel the sample
            sound is played on.                
            """

            self.name = name
            self.mixer = mixer
            self.enable = enable
            self.sound = sound
            self.channel = channel

            config.all_preferences[name] = self

        def render(self):

            if not eval(self.enable):
                return

            sound = eval(self.sound)

            ui.window(style=style.prefs_pref_frame[self.name])
            ui.vbox(style=style.prefs_pref_box[self.name])

            layout.label(self.name, "prefs")

            ui.vbox(style=style.prefs_volume_box[self.name])
            
            if sound:
                def clicked():
                    renpy.sound.play(sound, channel=self.channel)
            
            if sound and config.soundtest_before_volume:
                layout.button(u"Test", "soundtest", clicked=clicked, index=self.name)

            def changed(v):
                _preferences.set_volume(self.mixer, v / 128.0)
                
            ui.bar(128,
                   int(_preferences.get_volume(self.mixer) * 128),
                   changed=changed,
                   style=style.prefs_volume_slider[self.name])

            if sound and not config.soundtest_before_volume:
                layout.button(u"Test", "soundtest", clicked=clicked, index=self.name)

            ui.close()
            ui.close()

    class _SliderPreference(object):
        """
        A class that represents a preference that is controlled by a
        slider.
        """

        def __init__(self, name, field, range, enable='True', base=_preferences):
            """
            @param name: The name of this preference, that is shown to the user.

            @param range: An integer giving the maximum value of
            this slider. The slider goes from 0 to range.

            @param get: A function that's called to get the
            initial value of the slider. It's called with no
            arguments, and should return an integet between 0 and
            range, inclusive.

            @param set: A function that's called when the value of
            the slider is set by the user. It is called with a
            single integer, in the range 0 to range, inclusive.

            @param enable: A string giving a python expression. If
            the expression is evaluates to false, this preference
            is not shown.
            """

            self.name = name
            self.field = field
            self.range = range
            self.enable = enable
            self.base = base
            
            config.all_preferences[name] = self

        def get(self):
            value = getattr(self.base, self.field)
            if value == 0:
                value = self.range
            else:
                value -= 1

            return value

        def set(self, value):
            value += 1
            if value == self.range + 1:
                value = 0

            setattr(self.base, self.field, value)
            
        def render(self):

            if not eval(self.enable):
                return

            ui.window(style=style.prefs_pref_frame[self.name])
            ui.vbox(style=style.prefs_pref_box[self.name])

            layout.label(self.name, "prefs")

            def changed(v):
                self.set(v)

            ui.bar(self.range,
                   self.get(),
                   changed=changed,
                   style=style.prefs_slider[self.name])

            ui.close()


    class _JumpPreference(object):

        def __init__(self, name, target, condition="True", show="True"):
            self.name = name
            self.target = target
            self.condition = condition
            self.show = show
            
            config.all_preferences[name] = self

        def render(self):

            if not eval(self.show):
                return
            
            ui.window(style=style.prefs_jump[self.name])

            if eval(self.condition):
                clicked=ui.jumps(self.target)
            else:
                clicked=None

            layout.button(self.name, 'prefs_jump', clicked=clicked)

    def _remove_preference(name):
        """
        Removes the preference with the given name from the
        preferences menu.
        """

        pref = config.all_preferences.get(name, None)
        if not pref:
            return

        for k, v in config.preferences.iteritems():
            if pref in v:
                v.remove(pref)
            
init python hide:

    # Enablers for some preferences.
    config.sample_sound = None
    config.sample_voice = None
    config.has_transitions = True
    config.has_cps = True
    config.has_afm = True
    config.has_skipping = True
    config.has_skip_after_choice = True
    config.always_has_joystick = False
    config.has_joystick = True
    

    # Left

    _Preference(u'Display', 'fullscreen', [
        (u'Window', False, None),
        (u'Fullscreen', True, None),
        ])

    _Preference(u'Transitions', 'transitions', [
        (u'All', 2, 'config.has_transitions'),
        (u'Some', 1, 'config.has_transitions and default_transition'),
        (u'None', 0, 'config.has_transitions'),
        ])

    # Center

    _Preference(u'Skip', 'skip_unseen', [
        (u'Seen Messages', False, 'config.allow_skipping and config.has_skipping'),
        (u'All Messages', True, 'config.allow_skipping and config.has_skipping'),
        ])

    _JumpPreference(u'Begin Skipping',
                    '_return_skipping',
                    'not main_menu',
                    'config.allow_skipping and config.has_skipping')
    
    
    _Preference(u'After Choices', 'skip_after_choices', [
        (u'Stop Skipping', False, 'config.allow_skipping and config.has_skip_after_choice'),
        (u'Keep Skipping', True, 'config.allow_skipping and config.has_skip_after_choice'),
        ])

    config.old_names['Keep Skipping'] = 'Continue Skipping' 

    _SliderPreference(u'Text Speed', "text_cps", 150, 'config.has_cps')
    _SliderPreference(u'Auto-Forward Time', "afm_time", 40, 'config.has_afm')

    # Right

    _VolumePreference(u"Music Volume",
                      'music',
                      'config.has_music')

    _VolumePreference(u"Sound Volume",
                      'sfx',
                      'config.has_sound',
                      'config.sample_sound',
                      'sound')

    _VolumePreference(u'Voice Volume',
                      'voice',
                      'config.has_voice',
                      'config.sample_voice',
                      'voice')

    _JumpPreference(u'Joystick...',
                    'joystick_preferences_screen',
                    'renpy.display.joystick.enabled or config.always_has_joystick',
                    'config.has_joystick')

