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Diffstat (limited to 'app/paint/gimppaintcoreundo.c')
| -rw-r--r-- | app/paint/gimppaintcoreundo.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/app/paint/gimppaintcoreundo.c b/app/paint/gimppaintcoreundo.c new file mode 100644 index 0000000..861642f --- /dev/null +++ b/app/paint/gimppaintcoreundo.c @@ -0,0 +1,172 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gdk-pixbuf/gdk-pixbuf.h> +#include <gegl.h> + +#include "paint-types.h" + +#include "gimppaintcore.h" +#include "gimppaintcoreundo.h" + + +enum +{ + PROP_0, + PROP_PAINT_CORE +}; + + +static void gimp_paint_core_undo_constructed (GObject *object); +static void gimp_paint_core_undo_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec); +static void gimp_paint_core_undo_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec); + +static void gimp_paint_core_undo_pop (GimpUndo *undo, + GimpUndoMode undo_mode, + GimpUndoAccumulator *accum); +static void gimp_paint_core_undo_free (GimpUndo *undo, + GimpUndoMode undo_mode); + + +G_DEFINE_TYPE (GimpPaintCoreUndo, gimp_paint_core_undo, GIMP_TYPE_UNDO) + +#define parent_class gimp_paint_core_undo_parent_class + + +static void +gimp_paint_core_undo_class_init (GimpPaintCoreUndoClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GimpUndoClass *undo_class = GIMP_UNDO_CLASS (klass); + + object_class->constructed = gimp_paint_core_undo_constructed; + object_class->set_property = gimp_paint_core_undo_set_property; + object_class->get_property = gimp_paint_core_undo_get_property; + + undo_class->pop = gimp_paint_core_undo_pop; + undo_class->free = gimp_paint_core_undo_free; + + g_object_class_install_property (object_class, PROP_PAINT_CORE, + g_param_spec_object ("paint-core", NULL, NULL, + GIMP_TYPE_PAINT_CORE, + GIMP_PARAM_READWRITE | + G_PARAM_CONSTRUCT_ONLY)); +} + +static void +gimp_paint_core_undo_init (GimpPaintCoreUndo *undo) +{ +} + +static void +gimp_paint_core_undo_constructed (GObject *object) +{ + GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (object); + + G_OBJECT_CLASS (parent_class)->constructed (object); + + gimp_assert (GIMP_IS_PAINT_CORE (paint_core_undo->paint_core)); + + paint_core_undo->last_coords = paint_core_undo->paint_core->start_coords; + + g_object_add_weak_pointer (G_OBJECT (paint_core_undo->paint_core), + (gpointer) &paint_core_undo->paint_core); +} + +static void +gimp_paint_core_undo_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (object); + + switch (property_id) + { + case PROP_PAINT_CORE: + paint_core_undo->paint_core = g_value_get_object (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_paint_core_undo_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (object); + + switch (property_id) + { + case PROP_PAINT_CORE: + g_value_set_object (value, paint_core_undo->paint_core); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + break; + } +} + +static void +gimp_paint_core_undo_pop (GimpUndo *undo, + GimpUndoMode undo_mode, + GimpUndoAccumulator *accum) +{ + GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (undo); + + GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum); + + /* only pop if the core still exists */ + if (paint_core_undo->paint_core) + { + GimpCoords tmp_coords; + + tmp_coords = paint_core_undo->paint_core->last_coords; + paint_core_undo->paint_core->last_coords = paint_core_undo->last_coords; + paint_core_undo->last_coords = tmp_coords; + } +} + +static void +gimp_paint_core_undo_free (GimpUndo *undo, + GimpUndoMode undo_mode) +{ + GimpPaintCoreUndo *paint_core_undo = GIMP_PAINT_CORE_UNDO (undo); + + if (paint_core_undo->paint_core) + { + g_object_remove_weak_pointer (G_OBJECT (paint_core_undo->paint_core), + (gpointer) &paint_core_undo->paint_core); + paint_core_undo->paint_core = NULL; + } + + GIMP_UNDO_CLASS (parent_class)->free (undo, undo_mode); +} |