Cancel obsolete rendering task during start up. This may reduce time when starting from journal.

1 files changed, 5 insertions, 3 deletions

diff --git a/ep_modifier_rectangulartile.py b/ep_modifier_rectangulartile.py
index 59a4fcc..9cdaa90 100644
--- a/ep_modifier_rectangulartile.py
+++ b/ep_modifier_rectangulartile.py
@@ -74,7 +74,7 @@ class RectangularTileModifier(model_allele.Allele):
         new_one.y_tiles = self.y_tiles if cross_sequence[1] else other.y_tiles
         return new_one
 
-    def render_single_layer(self, single_layer, single_treenode, ctx, width, height):
+    def render_single_layer(self, task, single_layer, single_treenode, ctx, width, height):
         """
         pre: single_layer is not None
         pre: ctx is not None
@@ -86,13 +86,15 @@ class RectangularTileModifier(model_allele.Allele):
         delta_x, delta_y  = 1.0 / self.x_tiles, 1.0 / self.y_tiles
         for tix in range(self.x_tiles):
             for tiy in range(self.y_tiles):
+                if task.quit:
+                    return
                 ctx.save()
                 ctx.translate((tix-0.5*self.x_tiles)*delta_x+0.5*delta_x, \
                               (tiy-0.5*self.y_tiles)*delta_y+0.5*delta_y)
                 ctx.scale(delta_x, delta_y)
                 ctx.save()
-                single_layer.render(ctx, width, height)
-                single_treenode.render(ctx, width, height)
+                single_layer.render(task, ctx, width, height)
+                single_treenode.render(task, ctx, width, height)
                 ctx.restore()
                 ctx.restore()