mirror of https://github.com/kivy/kivy.git
102 lines
3.0 KiB
Python
102 lines
3.0 KiB
Python
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__all__ = ('AnimatedButton')
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from kivy.factory import Factory
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from kivy.uix.label import Label
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from kivy.uix.image import Image
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from kivy.graphics import *
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from kivy.properties import StringProperty, OptionProperty,\
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ObjectProperty, BooleanProperty
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class AnimatedButton(Label):
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state = OptionProperty('normal', options=('normal', 'down'))
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allow_stretch = BooleanProperty(True)
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keep_ratio = BooleanProperty(False)
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border = ObjectProperty(None)
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anim_delay = ObjectProperty(None)
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background_normal = StringProperty(
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'atlas://data/images/defaulttheme/button')
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texture_background = ObjectProperty(None)
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background_down = StringProperty(
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'atlas://data/images/defaulttheme/button_pressed')
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def __init__(self, **kwargs):
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super(AnimatedButton, self).__init__(**kwargs)
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self.register_event_type('on_press')
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self.register_event_type('on_release')
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#borderImage.border by default is ...
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self.border = (16, 16, 16, 16)
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#Image to display depending on state
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self.img = Image(source = self.background_normal,
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allow_stretch = self.allow_stretch,
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keep_ratio = self.keep_ratio, mipmap = True)
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#reset animation if anim_delay is changed
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def anim_reset(*l):
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self.img.anim_delay = self.anim_delay
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self.bind(anim_delay = anim_reset)
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self.anim_delay = .1
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#update self.texture when image.texture changes
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self.img.bind(texture = self.on_tex_changed)
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self.on_tex_changed()
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#update image source when background image is changed
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def background_changed(*l):
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self.img.source = self.background_normal
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self.anim_delay = .1
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self.bind(background_normal = background_changed)
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def on_tex_changed(self, *largs):
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self.texture_background = self.img.texture
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def _do_press(self):
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self.state = 'down'
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def _do_release(self):
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self.state = 'normal'
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def on_touch_down(self, touch):
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if not self.collide_point(touch.x, touch.y):
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return False
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if self in touch.ud:
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return False
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touch.grab(self)
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touch.ud[self] = True
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_animdelay = self.img.anim_delay
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self.img.source = self.background_down
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self.img.anim_delay = _animdelay
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self._do_press()
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self.dispatch('on_press')
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return True
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def on_touch_move(self, touch):
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return self in touch.ud
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def on_touch_up(self, touch):
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if touch.grab_current is not self:
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return
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assert(self in touch.ud)
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touch.ungrab(self)
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_animdelay = self.img._coreimage.anim_delay
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self.img.source = self.background_normal
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self.anim_delay = _animdelay
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self._do_release()
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self.dispatch('on_release')
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return True
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def on_press(self):
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pass
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def on_release(self):
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pass
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Factory.register('AnimatedButton', cls=AnimatedButton)
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