58 lines
1.4 KiB
Python
58 lines
1.4 KiB
Python
import pygtk
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pygtk.require('2.0')
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import gtk
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import cairo
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from Sketch import Sketch
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class SketchPad(gtk.DrawingArea):
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def __init__(self):
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gtk.DrawingArea.__init__(self)
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self._active_sketch = None
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self._sketches = []
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self.add_events(gtk.gdk.BUTTON_PRESS_MASK |
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gtk.gdk.BUTTON1_MOTION_MASK)
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self.connect("button-press-event", self.__button_press_cb)
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self.connect("button-release-event", self.__button_release_cb)
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self.connect("motion-notify-event", self.__motion_notify_cb)
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self.connect('expose_event', self.expose)
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def expose(self, widget, event):
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rect = self.get_allocation()
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ctx = widget.window.cairo_create()
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for sketch in self._sketches:
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sketch.draw(ctx)
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return False
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def add_sketch(self, sketch):
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self._sketches.append(sketch)
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def __button_press_cb(self, widget, event):
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self._active_sketch = Sketch()
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self.add_sketch(self._active_sketch)
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def __button_release_cb(self, widget, event):
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self._active_sketch = None
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def __motion_notify_cb(self, widget, event):
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if self._active_sketch:
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self._active_sketch.add_point(event.x, event.y)
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self.window.invalidate_rect(None, False)
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if __name__ == "__main__":
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window = gtk.Window()
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window.set_default_size(400, 300)
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window.connect("destroy", lambda w: gtk.main_quit())
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sketchpad = SketchPad()
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window.add(sketchpad)
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sketchpad.show()
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window.show()
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gtk.main()
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