3635cf04ab
GimpFilter's is_last_node field only reflects the item's position within the parent stack. When a layer is contained in a pass- through group, it can be the last layer of the group, while not being the last layer in the graph as a whole (paticularly, if there are visible layers below the group). In fact, when we have nested pass-through groups, whether or not a layer is the last node depends on which group we're considering as the root (since we exclude the backdrop from the group's projection, resulting in different graphs for different groups). Instead of rolling our own graph traversal, just move the relevant logic to GimpOperationLayerMode, and let GEGL do the work for us. At processing time, we can tell if we're the last node by checking if we have any input. For this to work, GimpOperationLayerMode's process() function needs to have control over what's going on. Replace the derived op classes, which override process(), with a call to the layer mode's function (as per gimp_layer_mode_get_function()) in GimpOperationLayerMode's process() function. (Well, actually, this commit keeps the ops around, and just hacks around them in gimp_layer_mode_get_operation(), because laziness :P) Keep using the layer's is_last_node property to do the invalidation.
72 lines
3.9 KiB
C
72 lines
3.9 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimp-layer-modes.h
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* Copyright (C) 2017 Michael Natterer <mitch@gimp.org>
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* Øyvind Kolås <pippin@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_LAYER_MODES_H__
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#define __GIMP_LAYER_MODES_H__
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void gimp_layer_modes_init (void);
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gboolean gimp_layer_mode_is_legacy (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_blend_space_mutable (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_composite_space_mutable (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_composite_mode_mutable (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_subtractive (GimpLayerMode mode);
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GimpLayerColorSpace gimp_layer_mode_get_blend_space (GimpLayerMode mode);
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GimpLayerColorSpace gimp_layer_mode_get_composite_space (GimpLayerMode mode);
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GimpLayerCompositeMode gimp_layer_mode_get_composite_mode (GimpLayerMode mode);
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GimpLayerCompositeMode gimp_layer_mode_get_paint_composite_mode (GimpLayerMode mode);
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const gchar * gimp_layer_mode_get_operation (GimpLayerMode mode);
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GimpLayerModeFunc gimp_layer_mode_get_function (GimpLayerMode mode);
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GimpLayerModeContext gimp_layer_mode_get_context (GimpLayerMode mode);
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GimpLayerMode * gimp_layer_mode_get_context_array (GimpLayerMode mode,
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GimpLayerModeContext context,
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gint *n_modes);
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GimpLayerModeGroup gimp_layer_mode_get_group (GimpLayerMode mode);
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const GimpLayerMode * gimp_layer_mode_get_group_array (GimpLayerModeGroup group,
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gint *n_modes);
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gboolean gimp_layer_mode_get_for_group (GimpLayerMode old_mode,
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GimpLayerModeGroup new_group,
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GimpLayerMode *new_mode);
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const Babl * gimp_layer_mode_get_format (GimpLayerMode mode,
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GimpLayerColorSpace composite_space,
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GimpLayerColorSpace blend_space,
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const Babl *preferred_format);
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GimpLayerCompositeRegion gimp_layer_mode_get_affected_region (GimpLayerMode mode);
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GimpLayerCompositeRegion gimp_layer_mode_get_included_region (GimpLayerMode mode,
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GimpLayerCompositeMode composite_mode);
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#endif /* __GIMP_LAYER_MODES_H__ */
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