mirror of https://github.com/kivy/kivy.git
142 lines
4.1 KiB
Python
142 lines
4.1 KiB
Python
'''
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Texture Wrapping and Coordinates Example
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========================================
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This example changes texture properties and the properties
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of its containing rectangle. You should see some a multicolored
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texture with sliders to the left and below and buttons at the
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bottom of the screen. The image texture_example_image.png is
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rendered into the rectangle. Sliders change the number of copies of the
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texture (the tex_coords), the size of enclosing rectangle (the taw_height
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and taw_width) while the buttons change how the texture is rendered when more
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than one copy is in the rectangle (the
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texture_wrap).
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'''
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from kivy.uix.widget import Widget
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from kivy.properties import ObjectProperty, ListProperty, StringProperty
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from kivy.lang import Builder
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from kivy.clock import Clock
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from kivy.base import runTouchApp
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class TextureAccessibleWidget(Widget):
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texture = ObjectProperty(None)
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tex_coords = ListProperty([0, 0, 1, 0, 1, 1, 0, 1])
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texture_wrap = StringProperty('clamp_to_edge')
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def __init__(self, **kwargs):
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super(TextureAccessibleWidget, self).__init__(**kwargs)
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Clock.schedule_once(self.texture_init, 0)
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def texture_init(self, *args):
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self.texture = self.canvas.children[-1].texture
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def on_texture_wrap(self, instance, value):
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self.texture.wrap = value
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root = Builder.load_string('''
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<TextureAccessibleWidget>:
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canvas:
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Rectangle:
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pos: self.pos
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size: self.size
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source: 'texture_example_image.png'
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tex_coords: root.tex_coords
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<SliderWithValue@BoxLayout>:
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min: 0.0
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max: 1.0
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value: slider.value
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Slider:
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id: slider
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orientation: root.orientation
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min: root.min
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max: root.max
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value: 1.0
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Label:
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size_hint: None, None
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size: min(root.size), min(root.size)
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text: str(slider.value)[:4]
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BoxLayout:
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orientation: 'vertical'
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BoxLayout:
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SliderWithValue:
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orientation: 'vertical'
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size_hint_x: None
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width: dp(40)
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min: 0
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max: 5
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value: 1
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on_value: taw.tex_coords[5] = self.value
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on_value: taw.tex_coords[7] = self.value
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SliderWithValue:
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orientation: 'vertical'
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size_hint_x: None
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width: dp(40)
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min: 0
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max: taw_container.height
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value: 0.5*taw_container.height
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on_value: taw.height = self.value
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AnchorLayout:
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id: taw_container
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anchor_x: 'left'
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anchor_y: 'bottom'
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TextureAccessibleWidget:
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id: taw
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size_hint: None, None
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BoxLayout:
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size_hint_y: None
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height: dp(80)
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BoxLayout:
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orientation: 'vertical'
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size_hint_x: None
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width: dp(80)
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Label:
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text: 'size'
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text_size: self.size
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halign: 'right'
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valign: 'middle'
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Label:
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text: 'tex_coords'
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text_size: self.size
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halign: 'left'
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valign: 'middle'
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BoxLayout:
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orientation: 'vertical'
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SliderWithValue:
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min: 0
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max: taw_container.width
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value: 0.5*taw_container.width
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on_value: taw.width = self.value
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SliderWithValue:
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min: 0.
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max: 5.
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value: 1.
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on_value: taw.tex_coords[2] = self.value
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on_value: taw.tex_coords[4] = self.value
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BoxLayout:
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size_hint_y: None
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height: dp(50)
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Label:
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text: 'texture wrap:'
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text_size: self.size
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valign: 'middle'
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halign: 'center'
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Button:
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text: 'clamp_to_edge'
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on_press: taw.texture_wrap = 'clamp_to_edge'
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Button:
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text: 'repeat'
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on_press: taw.texture_wrap = 'repeat'
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Button:
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text: 'mirrored_repeat'
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on_press: taw.texture_wrap = 'mirrored_repeat'
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''')
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runTouchApp(root)
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