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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:30:19 +0000 |
commit | 5c1676dfe6d2f3c837a5e074117b45613fd29a72 (patch) | |
tree | cbffb45144febf451e54061db2b21395faf94bfe /app/core/gimplayer-floating-selection.c | |
parent | Initial commit. (diff) | |
download | gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.tar.xz gimp-5c1676dfe6d2f3c837a5e074117b45613fd29a72.zip |
Adding upstream version 2.10.34.upstream/2.10.34upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | app/core/gimplayer-floating-selection.c | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/app/core/gimplayer-floating-selection.c b/app/core/gimplayer-floating-selection.c new file mode 100644 index 0000000..80222a2 --- /dev/null +++ b/app/core/gimplayer-floating-selection.c @@ -0,0 +1,332 @@ +/* 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 "libgimpbase/gimpbase.h" + +#include "core-types.h" + +#include "gimpboundary.h" +#include "gimpdrawable-filters.h" +#include "gimpdrawable-floating-selection.h" +#include "gimperror.h" +#include "gimpimage.h" +#include "gimpimage-undo.h" +#include "gimpimage-undo-push.h" +#include "gimplayer.h" +#include "gimplayer-floating-selection.h" +#include "gimplayermask.h" + +#include "gimp-intl.h" + + +/* public functions */ + +void +floating_sel_attach (GimpLayer *layer, + GimpDrawable *drawable) +{ + GimpImage *image; + GimpLayer *floating_sel; + GimpLayer *parent = NULL; + gint position = 0; + + g_return_if_fail (GIMP_IS_LAYER (layer)); + g_return_if_fail (GIMP_IS_DRAWABLE (drawable)); + g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable))); + g_return_if_fail (drawable != GIMP_DRAWABLE (layer)); + g_return_if_fail (gimp_item_get_image (GIMP_ITEM (layer)) == + gimp_item_get_image (GIMP_ITEM (drawable))); + + image = gimp_item_get_image (GIMP_ITEM (drawable)); + + floating_sel = gimp_image_get_floating_selection (image); + + /* If there is already a floating selection, anchor it */ + if (floating_sel) + { + floating_sel_anchor (floating_sel); + + /* if we were pasting to the old floating selection, paste now + * to the drawable + */ + if (drawable == (GimpDrawable *) floating_sel) + drawable = gimp_image_get_active_drawable (image); + } + + gimp_layer_set_lock_alpha (layer, TRUE, FALSE); + + gimp_layer_set_floating_sel_drawable (layer, drawable); + + /* Floating selection layer placement, default to the top of the + * layers stack; parent and position are adapted according to the + * drawable associated with the floating selection. + */ + + if (GIMP_IS_LAYER_MASK (drawable)) + { + GimpLayer *tmp = gimp_layer_mask_get_layer (GIMP_LAYER_MASK (drawable)); + + parent = GIMP_LAYER (gimp_item_get_parent (GIMP_ITEM (tmp))); + position = gimp_item_get_index (GIMP_ITEM (tmp)); + } + else if (GIMP_IS_LAYER (drawable)) + { + parent = GIMP_LAYER (gimp_item_get_parent (GIMP_ITEM (drawable))); + position = gimp_item_get_index (GIMP_ITEM (drawable)); + } + + gimp_image_add_layer (image, layer, parent, position, TRUE); +} + +void +floating_sel_anchor (GimpLayer *layer) +{ + GimpImage *image; + GimpDrawable *drawable; + GimpFilter *filter = NULL; + GeglRectangle bounding_box; + GeglRectangle dr_bounding_box; + gint off_x, off_y; + gint dr_off_x, dr_off_y; + + g_return_if_fail (GIMP_IS_LAYER (layer)); + g_return_if_fail (gimp_layer_is_floating_sel (layer)); + + /* Don't let gimp_image_remove_layer free the layer while we still need it */ + g_object_ref (layer); + + image = gimp_item_get_image (GIMP_ITEM (layer)); + + gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_FS_ANCHOR, + C_("undo-type", "Anchor Floating Selection")); + + drawable = gimp_layer_get_floating_sel_drawable (layer); + + gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y); + gimp_item_get_offset (GIMP_ITEM (drawable), &dr_off_x, &dr_off_y); + + bounding_box = gimp_drawable_get_bounding_box (GIMP_DRAWABLE (layer)); + dr_bounding_box = gimp_drawable_get_bounding_box (drawable); + + bounding_box.x += off_x; + bounding_box.y += off_y; + + dr_bounding_box.x += dr_off_x; + dr_bounding_box.y += dr_off_y; + + if (gimp_item_get_visible (GIMP_ITEM (layer)) && + gegl_rectangle_intersect (NULL, &bounding_box, &dr_bounding_box)) + { + filter = gimp_drawable_get_floating_sel_filter (drawable); + } + + if (filter) + { + gimp_drawable_merge_filter (drawable, filter, NULL, NULL, + NULL, FALSE, FALSE, FALSE); + } + + gimp_image_remove_layer (image, layer, TRUE, NULL); + + gimp_image_undo_group_end (image); + + /* invalidate the boundaries */ + gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (gimp_image_get_mask (image))); + + g_object_unref (layer); +} + +gboolean +floating_sel_to_layer (GimpLayer *layer, + GError **error) +{ + GimpItem *item; + GimpImage *image; + + g_return_val_if_fail (GIMP_IS_LAYER (layer), FALSE); + g_return_val_if_fail (gimp_layer_is_floating_sel (layer), FALSE); + g_return_val_if_fail (error == NULL || *error == NULL, FALSE); + + item = GIMP_ITEM (layer); + image = gimp_item_get_image (item); + + /* Check if the floating layer belongs to a channel */ + if (GIMP_IS_CHANNEL (gimp_layer_get_floating_sel_drawable (layer))) + { + g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED, + _("Cannot create a new layer from the floating " + "selection because it belongs to a layer mask " + "or channel.")); + return FALSE; + } + + gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_FS_TO_LAYER, + C_("undo-type", "Floating Selection to Layer")); + + gimp_image_undo_push_fs_to_layer (image, NULL, layer); + + gimp_drawable_detach_floating_sel (gimp_layer_get_floating_sel_drawable (layer)); + gimp_layer_set_floating_sel_drawable (layer, NULL); + + gimp_item_set_visible (item, TRUE, TRUE); + gimp_layer_set_lock_alpha (layer, FALSE, TRUE); + + gimp_image_undo_group_end (image); + + /* When the floating selection is converted to/from a normal layer + * it does something resembling a name change, so emit the + * "name-changed" signal + */ + gimp_object_name_changed (GIMP_OBJECT (layer)); + + gimp_drawable_update (GIMP_DRAWABLE (layer), + 0, 0, + gimp_item_get_width (item), + gimp_item_get_height (item)); + + return TRUE; +} + +void +floating_sel_activate_drawable (GimpLayer *layer) +{ + GimpImage *image; + GimpDrawable *drawable; + + g_return_if_fail (GIMP_IS_LAYER (layer)); + g_return_if_fail (gimp_layer_is_floating_sel (layer)); + + image = gimp_item_get_image (GIMP_ITEM (layer)); + + drawable = gimp_layer_get_floating_sel_drawable (layer); + + /* set the underlying drawable to active */ + if (GIMP_IS_LAYER_MASK (drawable)) + { + GimpLayerMask *mask = GIMP_LAYER_MASK (drawable); + + gimp_image_set_active_layer (image, gimp_layer_mask_get_layer (mask)); + } + else if (GIMP_IS_CHANNEL (drawable)) + { + gimp_image_set_active_channel (image, GIMP_CHANNEL (drawable)); + } + else + { + gimp_image_set_active_layer (image, GIMP_LAYER (drawable)); + } +} + +const GimpBoundSeg * +floating_sel_boundary (GimpLayer *layer, + gint *n_segs) +{ + g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL); + g_return_val_if_fail (gimp_layer_is_floating_sel (layer), NULL); + g_return_val_if_fail (n_segs != NULL, NULL); + + if (layer->fs.boundary_known == FALSE) + { + gint width, height; + gint off_x, off_y; + + width = gimp_item_get_width (GIMP_ITEM (layer)); + height = gimp_item_get_height (GIMP_ITEM (layer)); + gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y); + + if (layer->fs.segs) + g_free (layer->fs.segs); + + if (gimp_drawable_has_alpha (GIMP_DRAWABLE (layer))) + { + GeglBuffer *buffer; + gint i; + + /* find the segments */ + buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer)); + + layer->fs.segs = gimp_boundary_find (buffer, NULL, + babl_format ("A float"), + GIMP_BOUNDARY_WITHIN_BOUNDS, + 0, 0, width, height, + GIMP_BOUNDARY_HALF_WAY, + &layer->fs.num_segs); + + /* offset the segments */ + for (i = 0; i < layer->fs.num_segs; i++) + { + layer->fs.segs[i].x1 += off_x; + layer->fs.segs[i].y1 += off_y; + layer->fs.segs[i].x2 += off_x; + layer->fs.segs[i].y2 += off_y; + } + } + else + { + layer->fs.num_segs = 4; + layer->fs.segs = g_new0 (GimpBoundSeg, 4); + + /* top */ + layer->fs.segs[0].x1 = off_x; + layer->fs.segs[0].y1 = off_y; + layer->fs.segs[0].x2 = off_x + width; + layer->fs.segs[0].y2 = off_y; + + /* left */ + layer->fs.segs[1].x1 = off_x; + layer->fs.segs[1].y1 = off_y; + layer->fs.segs[1].x2 = off_x; + layer->fs.segs[1].y2 = off_y + height; + + /* right */ + layer->fs.segs[2].x1 = off_x + width; + layer->fs.segs[2].y1 = off_y; + layer->fs.segs[2].x2 = off_x + width; + layer->fs.segs[2].y2 = off_y + height; + + /* bottom */ + layer->fs.segs[3].x1 = off_x; + layer->fs.segs[3].y1 = off_y + height; + layer->fs.segs[3].x2 = off_x + width; + layer->fs.segs[3].y2 = off_y + height; + } + + layer->fs.boundary_known = TRUE; + } + + *n_segs = layer->fs.num_segs; + + return layer->fs.segs; +} + +void +floating_sel_invalidate (GimpLayer *layer) +{ + g_return_if_fail (GIMP_IS_LAYER (layer)); + g_return_if_fail (gimp_layer_is_floating_sel (layer)); + + /* Invalidate the attached-to drawable's preview */ + gimp_viewable_invalidate_preview (GIMP_VIEWABLE (gimp_layer_get_floating_sel_drawable (layer))); + + /* Invalidate the boundary */ + layer->fs.boundary_known = FALSE; +} |