[libchamplain] New python binding demos launcher.py and polygons.py

[Pierre-Luc Beaudoin <plbeaudoin src gnome org>]

commit 4a8f13468b76bbf00d876245488a1e0c1116dbcb
Author: Victor Godoy Poluceno <victorpoluceno gmail com>
Date:   Mon Jul 20 15:10:13 2009 -0300

    New python binding demos launcher.py and polygons.py

 bindings/python/demos/launcher.py |   83 ++++++++++++++++++++++++++++
 bindings/python/demos/polygons.py |  108 +++++++++++++++++++++++++++++++++++++
 2 files changed, 191 insertions(+), 0 deletions(-)
---
diff --git a/bindings/python/demos/launcher.py b/bindings/python/demos/launcher.py
new file mode 100644
index 0000000..3fb11f8
--- /dev/null
+++ b/bindings/python/demos/launcher.py
@@ -0,0 +1,83 @@
+import gobject
+import clutter
+import champlain
+
+PADDING = 10
+
+def map_view_button_release_cb(actor, event, view):
+    if event.button != 1 or event.click_count > 1:
+        return True
+    latlon = view.get_coords_from_event(event)
+    if latlon:
+        print "Map clicked at", latlon[0], latlon[1], "\n"
+    return True
+
+def zoom_in(actor, event, view):
+    view.zoom_in()    
+    return True
+
+def zoom_out(actor, event, view):
+    view.zoom_out()    
+    return True
+
+def make_button(text):
+    button = clutter.Group()
+    button_bg = clutter.Rectangle()
+    button_bg.set_color(clutter.color_parse('white'))
+    button_bg.set_opacity(0xcc)
+    button.add(button_bg)
+
+    button_text = clutter.label_new_full('Sans 10', text, \
+        clutter.color_parse('black'))
+    button.add(button_text)
+
+    width, height = button_text.get_size()
+    button_bg.set_size(width+PADDING*2, height+PADDING*2)
+    button_bg.set_position(0, 0)
+    button_text.set_position(PADDING, PADDING)
+    return button
+
+def main():
+
+    # Create the map view
+    actor = champlain.View()
+    actor.set_size(800, 600)
+    actor.set_property('scroll-mode', champlain.SCROLL_MODE_KINETIC)
+    actor.set_property('zoom-level', 12)
+    actor.center_on(45.466, -73.75)
+
+    # Create the buttons
+    buttons = clutter.Group()
+    buttons.set_position(PADDING, PADDING)
+    
+    button = make_button('Zoom in')
+    button.set_reactive(True)
+    width = button.get_size()[0]
+    total_width = width+PADDING
+    button.connect('button-release-event', zoom_in, actor)
+    buttons.add(button)
+
+    button = make_button('Zoom out')
+    button.set_reactive(True)
+    button.set_position(total_width, 0)
+    width = button.get_size()[0]
+    total_width += width+PADDING
+    button.connect('button-release-event', zoom_out, actor)
+    buttons.add(button)
+    
+    stage = clutter.stage_get_default()
+    stage.set_size(800, 600)
+    stage.add(actor)
+    stage.add(buttons)
+    stage.show()
+
+    # Connect to the click event
+    actor.set_reactive(True)
+    actor.connect('button-release-event', map_view_button_release_cb, actor)
+
+
+if __name__ == '__main__':
+    gobject.threads_init()
+    clutter.init()
+    main()
+    clutter.main()
diff --git a/bindings/python/demos/polygons.py b/bindings/python/demos/polygons.py
new file mode 100644
index 0000000..5677629
--- /dev/null
+++ b/bindings/python/demos/polygons.py
@@ -0,0 +1,108 @@
+import gobject
+import clutter
+import champlain
+
+PADDING = 10
+
+def map_view_button_release_cb(actor, event, view):
+    if event.button != 1 or event.click_count > 1:
+        return True
+    latlon = view.get_coords_from_event(event)
+    if latlon:
+        print "Map clicked at", latlon[0], latlon[1], "\n"
+    return True
+
+def zoom_in(actor, event, view):
+    view.zoom_in()    
+    return True
+
+def zoom_out(actor, event, view):
+    view.zoom_out()    
+    return True
+
+def make_button(text):
+    button = clutter.Group()
+    button_bg = clutter.Rectangle()
+    button_bg.set_color(clutter.color_parse('white'))
+    button_bg.set_opacity(0xcc)
+    button.add(button_bg)
+
+    button_text = clutter.label_new_full('Sans 10', text, \
+        clutter.color_parse('black'))
+    button.add(button_text)
+
+    width, height = button_text.get_size()
+    button_bg.set_size(width+PADDING*2, height+PADDING*2)
+    button_bg.set_position(0, 0)
+    button_text.set_position(PADDING, PADDING)
+    return button
+
+def main():
+    # Create the map view
+    actor = champlain.View()
+    actor.set_size(800, 600)
+    actor.set_property('scroll-mode', champlain.SCROLL_MODE_KINETIC)
+    actor.set_property('zoom-level', 9)
+    actor.center_on(45.466, -73.75)
+
+    # Create the buttons
+    buttons = clutter.Group()
+    buttons.set_position(PADDING, PADDING)
+    
+    button = make_button('Zoom in')
+    button.set_reactive(True)
+    width = button.get_size()[0]
+    total_width = width+PADDING
+    button.connect('button-release-event', zoom_in, actor)
+    buttons.add(button)
+
+    button = make_button('Zoom out')
+    button.set_reactive(True)
+    button.set_position(total_width, 0)
+    width = button.get_size()[0]
+    total_width += width+PADDING
+    button.connect('button-release-event', zoom_out, actor)
+    buttons.add(button)
+    
+    stage = clutter.stage_get_default()
+    stage.set_size(800, 600)
+    stage.add(actor)
+    stage.add(buttons)
+    stage.show()
+
+    # draw a line
+    polygon = champlain.Polygon()
+    # cheap approx of Highway 10
+    polygon.append_point(45.4095, -73.3197)
+    polygon.append_point(45.4104, -73.2846)
+    polygon.append_point(45.4178, -73.2239)
+    polygon.append_point(45.4176, -73.2181)
+    polygon.append_point(45.4151, -73.2126)
+    polygon.append_point(45.4016, -73.1926)
+    polygon.append_point(45.3994, -73.1877)
+    polygon.append_point(45.4000, -73.1815)
+    polygon.append_point(45.4151, -73.1218)
+    polygon.set_stroke_width(5.0)
+    actor.add_polygon(polygon)
+
+    # draw a polygon
+    polygon = champlain.Polygon()
+    polygon.append_point(45.1386, -73.9196)
+    polygon.append_point(45.1229, -73.8991)
+    polygon.append_point(45.0946, -73.9531)
+    polygon.append_point(45.1085, -73.9714)
+    polygon.append_point(45.1104, -73.9761)
+    polygon.set_fill(True)
+    polygon.set_property('closed-path', True)
+    actor.add_polygon(polygon)
+
+    # Connect to the click event
+    actor.set_reactive(True)
+    actor.connect('button-release-event', map_view_button_release_cb, actor)
+
+
+if __name__ == "__main__":
+    gobject.threads_init()
+    clutter.init()
+    main()
+    clutter.main()