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Viewing changes to release/scripts/templates/operator_modal_draw.py

  • Committer: Package Import Robot
  • Author(s): Jeremy Bicha
  • Date: 2013-03-06 12:08:47 UTC
  • mfrom: (1.5.1) (14.1.8 experimental)
  • Revision ID: package-import@ubuntu.com-20130306120847-frjfaryb2zrotwcg
Tags: 2.66a-1ubuntu1
https://launchpad.net/bugs/1076930
https://launchpad.net/bugs/1089256
https://launchpad.net/bugs/1052743
https://launchpad.net/bugs/999024
* Resynchronize with Debian (LP: #1076930, #1089256, #1052743, #999024,
  #1122888, #1147084)
* debian/control:
  - Lower build-depends on libavcodec-dev since we're not
    doing the libav9 transition in Ubuntu yet

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release/scripts/templates/operator_modal_draw.py
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import bpy
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import bgl
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import blf
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def draw_callback_px(self, context):
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    print("mouse points", len(self.mouse_path))
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    font_id = 0  # XXX, need to find out how best to get this.
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    # draw some text
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    blf.position(font_id, 15, 30, 0)
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    blf.size(font_id, 20, 72)
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    blf.draw(font_id, "Hello Word " + str(len(self.mouse_path)))
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    # 50% alpha, 2 pixel width line
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    bgl.glEnable(bgl.GL_BLEND)
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    bgl.glColor4f(0.0, 0.0, 0.0, 0.5)
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    bgl.glLineWidth(2)
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    bgl.glBegin(bgl.GL_LINE_STRIP)
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    for x, y in self.mouse_path:
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        bgl.glVertex2i(x, y)
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    bgl.glEnd()
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    # restore opengl defaults
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    bgl.glLineWidth(1)
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    bgl.glDisable(bgl.GL_BLEND)
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    bgl.glColor4f(0.0, 0.0, 0.0, 1.0)
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class ModalDrawOperator(bpy.types.Operator):
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    '''Draw a line with the mouse'''
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    bl_idname = "view3d.modal_operator"
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    bl_label = "Simple Modal View3D Operator"
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    def modal(self, context, event):
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        context.area.tag_redraw()
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        if event.type == 'MOUSEMOVE':
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            self.mouse_path.append((event.mouse_region_x, event.mouse_region_y))
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        elif event.type == 'LEFTMOUSE':
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            context.region.callback_remove(self._handle)
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            return {'FINISHED'}
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        elif event.type in {'RIGHTMOUSE', 'ESC'}:
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            context.region.callback_remove(self._handle)
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            return {'CANCELLED'}
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        return {'RUNNING_MODAL'}
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    def invoke(self, context, event):
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        if context.area.type == 'VIEW_3D':
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            context.window_manager.modal_handler_add(self)
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            # Add the region OpenGL drawing callback
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            # draw in view space with 'POST_VIEW' and 'PRE_VIEW'
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            self._handle = context.region.callback_add(draw_callback_px, (self, context), 'POST_PIXEL')
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            self.mouse_path = []
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            return {'RUNNING_MODAL'}
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        else:
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            self.report({'WARNING'}, "View3D not found, cannot run operator")
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            return {'CANCELLED'}
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def register():
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    bpy.utils.register_class(ModalDrawOperator)
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def unregister():
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    bpy.utils.unregister_class(ModalDrawOperator)
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if __name__ == "__main__":
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    register()