84 lines
2.2 KiB
Python
84 lines
2.2 KiB
Python
#!/usr/bin/env python3
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import nanogui
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from nanogui import glfw
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from nanogui import BoxLayout, Color, Label, Orientation, Screen, Widget, Window, Vector2i
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from nanogui.nanovg import LerpRGBA, RGBAf, RGB
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class CustomWidget(Widget):
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def __init__(self, parent, size=(100, 100), color=Color(192, 0, 0, 255)):
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super().__init__(parent)
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self._size = size
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self.color = RGBAf(color.r, color.g, color.b, color.w)
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def preferred_size(self, ctx):
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return Vector2i(self._size)
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def draw(self, ctx):
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pos = self.position()
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size = self.size()
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ctx.BeginPath()
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ctx.Rect(pos[0], pos[1], size[0], size[1])
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bg = LerpRGBA(RGB(64, 64, 64), self.color, 0.3)
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ctx.FillColor(bg)
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ctx.Fill()
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ctx.BeginPath()
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ctx.StrokeWidth(5.0)
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ctx.StrokeColor(self.color)
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ctx.Rect(
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pos[0] + size[0] / 4.0,
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pos[1] + size[1] / 4.0,
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size[0] / 2.0,
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size[1] / 2.0,
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)
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ctx.Stroke()
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ctx.ClosePath()
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class CustomWidgetApp(Screen):
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def __init__(self, size=(400, 300)):
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super().__init__(size, "NanoGUI CustomWidget")
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self.win = Window(self, "Demo Window")
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self.win.set_layout(BoxLayout(Orientation.Vertical, margin=20, spacing=20))
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self.resize_event(size)
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Label(self.win, "NanoGUI CustomWidget Demo", "sans-bold")
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_ = CustomWidget(self.win, (200, 100))
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self.draw_all()
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self.set_visible(True)
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self.perform_layout()
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def resize_event(self, size):
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self.win.set_fixed_size(size)
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self.win.set_size(size)
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self.win.center()
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self.win.perform_layout(self.nvg_context())
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super().resize_event(size)
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return True
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def keyboard_event(self, key, scancode, action, modifiers):
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if super().keyboard_event(key, scancode, action, modifiers):
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return True
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if key == glfw.KEY_ESCAPE and action == glfw.PRESS:
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self.set_visible(False)
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return True
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return False
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if __name__ == "__main__":
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import gc
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nanogui.init()
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app = CustomWidgetApp()
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nanogui.mainloop(refresh=1 / 60.0 * 1000)
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del app
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gc.collect()
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nanogui.shutdown()
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