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Michael Natterer authored
2003-09-06 Michael Natterer <mitch@gimp.org> To optimize duplicate and/or wrong image updates away, introduced new policy that a child object must never explicitly update or invalidate its parent object (just like the GUI is not updated explicitly by the core): * app/core/gimpdrawable.[ch]: added new signal GimpDrawable::update(). Never update or invalidate the image when the drawable is updated or invalidated. (gimp_drawable_set_visible): don't gimp_drawable_update() the drawable since its pixels have not changed. * app/core/gimpimage.[ch]: connect to the "add" and "remove" signals of the layers and channels containers. Also connect to the "update" and "visibility_changed" signals of all drawables in these containers (optimizes away updates issued by drawables which are not yet added to the image and updates of the selection mask). Also, don't propagate updates to the image if the emitting drawable is invisible (optimizes away updates issued by invisible drawables). (gimp_image_add_layer,channel) (gimp_image_remove_layer,channel): don't update the image since that's done by our "add" and "remove" handlers now. (gimp_image_position_layer,channel): update just the image, not the drawable since its pixels have not changed. (gimp_image_real_colormap_changed) (gimp_image_set_component_visible): always call gimp_image_update() *and* gimp_viewable_invalidate_preview() to get everything updated, since update and invalidate of images are not connected. * app/core/gimpimage-undo-push.c (undo_pop_layer,channel): don't update the drawable since (a) its pixels don't change and (b) the image updates itself upon adding/removing now. (undo_pop_layer_mod): replaced gimp_image_update() by gimp_drawable_update() (just for consistency with other similar functions). * app/core/gimplayer.c: connect to "update" of the layer mask and issue updates on the layer if the mask update has any effect on the projection. (gimp_layer_create_mask): don't set the mask's offsets here since they may be different when we later add the mask to the layer. * app/core/gimplayermask.c (gimp_layer_mask_set_layer): set the mask offsets here instead. * app/core/gimpchannel.c (gimp_channel_translate): update the channel even if push_undo == FALSE. * app/paint/gimppaintcore.c (gimp_paint_core_finish) * app/tools/gimpinktool.c (ink_finish): invalidate both the drawable and the image preview since invalidating the drawable doesn't invalidate the image any more. * app/text/gimptextlayer.c (gimp_text_layer_render_now): also update the new extents of the text layer, not only the old one. (gimp_text_layer_render_layout): don't update the drawable since gimp_drawable_fill() already updated it.
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