#!/usr/bin/env python
+#This is a demonstration of the libchamplain python binding.
+#It will display a blue "pulsating" dot on a given position on the map
+#A old legend that this position is the bed of Pierlux. You will have to find out...
+
import champlain
import clutter
import cluttercairo
import gobject
MARKER_SIZE = 10
-
-def create_marker():
-
- orange = clutter.Color(0xf3, 0x94, 0x07, 0xbb)
- white = clutter.Color(0xff, 0xff, 0xff, 0xff)
- timeline = clutter.Timeline()
-
- marker = champlain.Marker()
- bg = cluttercairo.CairoTexture(MARKER_SIZE, MARKER_SIZE)
- cr = bg.cairo_create()
-
- cr.set_source_rgb(0, 0, 0)
- cr.arc(MARKER_SIZE / 2.0, MARKER_SIZE / 2.0, MARKER_SIZE / 2.0, 0, 2 * math.pi)
- cr.close_path()
-
- cr.set_source_rgba(0.1, 0.1, 0.9, 1.0)
- cr.fill()
-
- del cr
-
- marker.add(bg)
- bg.set_anchor_point_from_gravity(clutter.GRAVITY_CENTER)
- bg.set_position(0, 0)
-
- bg = cluttercairo.CairoTexture(2 * MARKER_SIZE, 2 * MARKER_SIZE)
- cr = bg.cairo_create()
-
- cr.set_source_rgb(0, 0, 0)
- cr.arc(MARKER_SIZE, MARKER_SIZE, 0.9 * MARKER_SIZE, 0, 2 * math.pi)
- cr.close_path()
-
- cr.set_line_width(2.0)
- cr.set_source_rgba(0.1, 0.1, 0.7, 1.0)
- cr.stroke()
-
- del cr
-
- marker.add(bg)
- bg.lower_bottom()
- bg.set_position(0, 0)
- bg.set_anchor_point_from_gravity(clutter.GRAVITY_CENTER)
-
- timeline.set_duration(1000)
- timeline.set_loop(True)
-
- alpha = clutter.Alpha()
- alpha.set_timeline(timeline)
- alpha.set_func(clutter.sine_inc_func)
-
- behaviour = clutter.BehaviourScale(0.5, 0.5, 2.0, 2.0)
-
- behaviour.set_alpha(alpha)
- behaviour.apply(bg)
-
- behaviour = clutter.BehaviourOpacity(255, 0)
- behaviour.set_alpha(alpha)
- behaviour.apply(bg)
-
- timeline.start()
-
- #Set marker position on the map
- marker.set_position(45.528178, -73.563788)
-
- return marker;
-
-
-def main():
-
- gobject.threads_init()
-
- clutter.init()
- stage = clutter.stage_get_default()
- stage.set_size(800, 600)
-
- actor = champlain.View()
- actor.set_size(800, 600)
- stage.add(actor)
-
- layer = champlain.Layer()
- layer.show()
- actor.add_layer(layer)
-
- marker = create_marker()
- layer.add(marker)
-
- # Finish initialising the map view
- actor.set_property("zoom-level", 5)
- actor.set_property("scroll-mode", champlain.SCROLL_MODE_KINETIC)
-
- actor.center_on(45.466, -73.75)
- stage.show()
- clutter.main()
-
+MARKER_COLOR = [0.1,0.1,0.9,1.0]
+
+POSITION = [45.528178, -73.563788]
+SCREEN_SIZE = [800,600]
+
+#The AnimatedMarker will extend the champlain.Marker class
+class AnimatedMarker(champlain.Marker) :
+ def __init__(self,color=None) :
+ champlain.Marker.__init__(self)
+
+ orange = clutter.Color(0xf3, 0x94, 0x07, 0xbb)
+ white = clutter.Color(0xff, 0xff, 0xff, 0xff)
+ if not color :
+ color = MARKER_COLOR
+
+ #Cairo definition of the inner marker
+ bg_in = cluttercairo.CairoTexture(MARKER_SIZE, MARKER_SIZE)
+ cr_in = bg_in.cairo_create()
+ cr_in.set_source_rgb(0, 0, 0)
+ cr_in.arc(MARKER_SIZE / 2.0, MARKER_SIZE / 2.0, MARKER_SIZE / 2.0, 0, 2 * math.pi)
+ cr_in.close_path()
+ cr_in.set_source_rgba(*color)
+ cr_in.fill()
+ self.add(bg_in)
+ bg_in.set_anchor_point_from_gravity(clutter.GRAVITY_CENTER)
+ bg_in.set_position(0, 0)
+
+ #Cairo definition of the outside circle (that will be animated)
+ bg_out = cluttercairo.CairoTexture(2 * MARKER_SIZE, 2 * MARKER_SIZE)
+ cr_out = bg_out.cairo_create()
+ cr_out.set_source_rgb(0, 0, 0)
+ cr_out.arc(MARKER_SIZE, MARKER_SIZE, 0.9 * MARKER_SIZE, 0, 2 * math.pi)
+ cr_out.close_path()
+ cr_out.set_line_width(2.0)
+ cr_out.set_source_rgba(*color)
+ cr_out.stroke()
+ self.add(bg_out)
+ bg_out.lower_bottom()
+ bg_out.set_position(0, 0)
+ bg_out.set_anchor_point_from_gravity(clutter.GRAVITY_CENTER)
+
+ #The timeline of our animation
+ self.timeline = clutter.Timeline()
+ self.timeline.set_duration(1000)
+ self.timeline.set_loop(True)
+
+ self.alpha = clutter.Alpha()
+ self.alpha.set_timeline(self.timeline)
+ self.alpha.set_func(clutter.sine_inc_func)
+
+ #The "growing" behaviour
+ self.grow_behaviour = clutter.BehaviourScale(0.5, 0.5, 2.0, 2.0)
+ self.grow_behaviour.set_alpha(self.alpha)
+ self.grow_behaviour.apply(bg_out)
+
+ #The fade out behaviour
+ self.fade_behaviour = clutter.BehaviourOpacity(255, 0)
+ self.fade_behaviour.set_alpha(self.alpha)
+ self.fade_behaviour.apply(bg_out)
+
+ #If you want the marked to be animated without calling start_animation
+ #Uncomment the following line
+ #self.timeline.start()
+
+ def stop_animation(self) :
+ self.timeline.stop()
+
+ def start_animation(self) :
+ self.timeline.start()
+
+
+def main() :
+ gobject.threads_init()
+ clutter.init()
+ stage = clutter.stage_get_default()
+ actor = champlain.View()
+ layer = champlain.Layer()
+ marker = AnimatedMarker()
+ #Starting the animation, that's what we want after all !
+ marker.start_animation()
+ #Set marker position on the map
+ marker.set_position(*POSITION)
+
+ stage.set_size(*SCREEN_SIZE)
+ actor.set_size(*SCREEN_SIZE)
+ stage.add(actor)
+
+ layer.show()
+ actor.add_layer(layer)
+ layer.add(marker)
+
+ # Finish initialising the map view
+ actor.set_property("zoom-level", 5)
+ actor.set_property("scroll-mode", champlain.SCROLL_MODE_KINETIC)
+ actor.center_on(*POSITION)
+
+ stage.show()
+
+ clutter.main()
+
if __name__ == "__main__":
- main()
+ main()
projects / libchamplain / commitdiff