405 lines
13 KiB
C
405 lines
13 KiB
C
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/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* pikacanvaslayerboundary.c
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* Copyright (C) 2010 Michael Natterer <mitch@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 <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikabase/pikabase.h"
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#include "libpikamath/pikamath.h"
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#include "display-types.h"
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#include "core/pikachannel.h"
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#include "core/pikalayer.h"
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#include "core/pikalayer-floating-selection.h"
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#include "pikacanvas-style.h"
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#include "pikacanvaslayerboundary.h"
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#include "pikadisplayshell.h"
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enum
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{
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PROP_0,
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PROP_LAYERS,
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PROP_EDIT_MASK
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};
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typedef struct _PikaCanvasLayerBoundaryPrivate PikaCanvasLayerBoundaryPrivate;
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struct _PikaCanvasLayerBoundaryPrivate
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{
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GList *layers;
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gboolean edit_mask;
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};
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#define GET_PRIVATE(layer_boundary) \
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((PikaCanvasLayerBoundaryPrivate *) pika_canvas_layer_boundary_get_instance_private ((PikaCanvasLayerBoundary *) (layer_boundary)))
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/* local function prototypes */
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static void pika_canvas_layer_boundary_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec);
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static void pika_canvas_layer_boundary_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec);
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static void pika_canvas_layer_boundary_finalize (GObject *object);
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static void pika_canvas_layer_boundary_draw (PikaCanvasItem *item,
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cairo_t *cr);
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static cairo_region_t * pika_canvas_layer_boundary_get_extents (PikaCanvasItem *item);
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static void pika_canvas_layer_boundary_stroke (PikaCanvasItem *item,
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cairo_t *cr);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaCanvasLayerBoundary, pika_canvas_layer_boundary,
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PIKA_TYPE_CANVAS_RECTANGLE)
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#define parent_class pika_canvas_layer_boundary_parent_class
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static void
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pika_canvas_layer_boundary_class_init (PikaCanvasLayerBoundaryClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaCanvasItemClass *item_class = PIKA_CANVAS_ITEM_CLASS (klass);
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object_class->set_property = pika_canvas_layer_boundary_set_property;
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object_class->get_property = pika_canvas_layer_boundary_get_property;
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object_class->finalize = pika_canvas_layer_boundary_finalize;
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item_class->draw = pika_canvas_layer_boundary_draw;
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item_class->get_extents = pika_canvas_layer_boundary_get_extents;
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item_class->stroke = pika_canvas_layer_boundary_stroke;
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g_object_class_install_property (object_class, PROP_LAYERS,
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g_param_spec_pointer ("layers", NULL, NULL,
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PIKA_PARAM_READWRITE));
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g_object_class_install_property (object_class, PROP_EDIT_MASK,
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g_param_spec_boolean ("edit-mask", NULL, NULL,
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FALSE,
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PIKA_PARAM_READWRITE));
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}
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static void
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pika_canvas_layer_boundary_init (PikaCanvasLayerBoundary *layer_boundary)
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{
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}
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static void
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pika_canvas_layer_boundary_finalize (GObject *object)
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{
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PikaCanvasLayerBoundaryPrivate *private = GET_PRIVATE (object);
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if (private->layers)
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{
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GList *iter;
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for (iter = private->layers; iter; iter = iter->next)
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g_clear_weak_pointer (&iter->data);
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g_list_free (private->layers);
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}
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_canvas_layer_boundary_set_property (GObject *object,
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guint property_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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PikaCanvasLayerBoundaryPrivate *private = GET_PRIVATE (object);
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switch (property_id)
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{
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case PROP_LAYERS:
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if (private->layers)
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{
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GList *iter;
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for (iter = private->layers; iter; iter = iter->next)
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g_clear_weak_pointer (&iter->data);
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g_list_free (private->layers);
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}
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private->layers = g_list_copy (g_value_get_pointer (value));
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if (private->layers)
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{
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GList *iter;
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for (iter = private->layers; iter; iter = iter->next)
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/* NOT g_set_weak_pointer() because the pointer is already set */
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g_object_add_weak_pointer (G_OBJECT (iter->data),
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(gpointer) &iter->data);
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}
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break;
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case PROP_EDIT_MASK:
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private->edit_mask = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_canvas_layer_boundary_get_property (GObject *object,
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guint property_id,
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GValue *value,
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GParamSpec *pspec)
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{
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PikaCanvasLayerBoundaryPrivate *private = GET_PRIVATE (object);
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switch (property_id)
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{
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case PROP_LAYERS:
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g_value_set_pointer (value, private->layers);
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break;
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case PROP_EDIT_MASK:
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g_value_set_boolean (value, private->edit_mask);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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static void
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pika_canvas_layer_boundary_draw (PikaCanvasItem *item,
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cairo_t *cr)
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{
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PikaCanvasLayerBoundaryPrivate *private = GET_PRIVATE (item);
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if (private->layers)
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PIKA_CANVAS_ITEM_CLASS (parent_class)->draw (item, cr);
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}
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static cairo_region_t *
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pika_canvas_layer_boundary_get_extents (PikaCanvasItem *item)
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{
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PikaCanvasLayerBoundaryPrivate *private = GET_PRIVATE (item);
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if (private->layers)
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return PIKA_CANVAS_ITEM_CLASS (parent_class)->get_extents (item);
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return NULL;
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}
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static void
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pika_canvas_layer_boundary_stroke (PikaCanvasItem *item,
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cairo_t *cr)
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{
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PikaCanvasLayerBoundaryPrivate *private = GET_PRIVATE (item);
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PikaDisplayShell *shell = pika_canvas_item_get_shell (item);
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GList *iter;
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for (iter = private->layers; iter; iter = iter->next)
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{
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pika_canvas_set_layer_style (pika_canvas_item_get_canvas (item), cr,
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iter->data, shell->offset_x, shell->offset_y);
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cairo_stroke (cr);
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}
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}
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PikaCanvasItem *
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pika_canvas_layer_boundary_new (PikaDisplayShell *shell)
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{
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g_return_val_if_fail (PIKA_IS_DISPLAY_SHELL (shell), NULL);
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return g_object_new (PIKA_TYPE_CANVAS_LAYER_BOUNDARY,
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"shell", shell,
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NULL);
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}
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void
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pika_canvas_layer_boundary_set_layers (PikaCanvasLayerBoundary *boundary,
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GList *layers)
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{
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PikaCanvasLayerBoundaryPrivate *private;
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GList *shown_layers;
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GList *iter;
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gboolean changed;
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g_return_if_fail (PIKA_IS_CANVAS_LAYER_BOUNDARY (boundary));
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private = GET_PRIVATE (boundary);
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if (g_list_length (layers) == 1 && pika_layer_is_floating_sel (layers->data))
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{
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PikaDrawable *drawable;
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drawable = pika_layer_get_floating_sel_drawable (layers->data);
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if (PIKA_IS_CHANNEL (drawable))
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{
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/* if the owner drawable is a channel, show no outline */
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shown_layers = NULL;
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}
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else
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{
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/* otherwise, set the layer to the owner drawable */
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shown_layers = g_list_prepend (NULL, PIKA_LAYER (drawable));
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}
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}
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else
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{
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shown_layers = g_list_copy (layers);
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}
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changed = (g_list_length (shown_layers) != g_list_length (private->layers));
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if (! changed)
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{
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for (iter = shown_layers; iter; iter = iter->next)
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{
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if (! g_list_find (private->layers, iter->data))
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{
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changed = TRUE;
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break;
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}
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}
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}
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if (changed)
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{
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gboolean edit_mask = FALSE;
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gint x1 = G_MAXINT;
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gint x2 = G_MININT;
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gint y1 = G_MAXINT;
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gint y2 = G_MININT;
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for (iter = layers; iter; iter = iter->next)
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{
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if (iter->data)
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{
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PikaItem *item = PIKA_ITEM (iter->data);
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x1 = MIN (x1, pika_item_get_offset_x (item));
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y1 = MIN (y1, pika_item_get_offset_y (item));
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x2 = MAX (x2,
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pika_item_get_offset_x (item) +
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pika_item_get_width (item));
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y2 = MAX (y2,
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pika_item_get_offset_y (item) +
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pika_item_get_height (item));
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/* We can only edit one layer mask at a time. */
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if (pika_layer_get_mask (iter->data) &&
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pika_layer_get_edit_mask (iter->data))
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edit_mask = TRUE;
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}
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}
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pika_canvas_item_begin_change (PIKA_CANVAS_ITEM (boundary));
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if (layers)
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g_object_set (boundary,
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"x", (gdouble) x1,
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"y", (gdouble) y1,
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"width", (gdouble) (x2 - x1),
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"height", (gdouble) (y2 - y1),
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NULL);
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g_object_set (boundary,
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"layers", layers,
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"edit-mask", edit_mask,
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NULL);
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pika_canvas_item_end_change (PIKA_CANVAS_ITEM (boundary));
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}
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else if (layers)
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{
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gboolean edit_mask = FALSE;
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gint x1 = G_MAXINT;
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gint x2 = G_MININT;
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gint y1 = G_MAXINT;
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gint y2 = G_MININT;
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gdouble x, y, w, h;
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g_object_get (boundary,
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"x", &x,
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"y", &y,
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"width", &w,
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"height", &h,
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NULL);
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for (iter = layers; iter; iter = iter->next)
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{
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if (iter->data)
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{
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PikaItem *item = PIKA_ITEM (iter->data);
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x1 = MIN (x1, pika_item_get_offset_x (item));
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y1 = MIN (y1, pika_item_get_offset_y (item));
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x2 = MAX (x2,
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pika_item_get_offset_x (item) +
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pika_item_get_width (item));
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y2 = MAX (y2,
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pika_item_get_offset_y (item) +
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pika_item_get_height (item));
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if (pika_layer_get_mask (iter->data) &&
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pika_layer_get_edit_mask (iter->data))
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edit_mask = TRUE;
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}
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}
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if (x1 != (gint) x ||
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x1 != (gint) y ||
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(x2 - x1) != (gint) w ||
|
||
|
|
(y2 - y1) != (gint) h ||
|
||
|
|
edit_mask != private->edit_mask)
|
||
|
|
{
|
||
|
|
pika_canvas_item_begin_change (PIKA_CANVAS_ITEM (boundary));
|
||
|
|
|
||
|
|
g_object_set (boundary,
|
||
|
|
"x", (gdouble) x1,
|
||
|
|
"y", (gdouble) y1,
|
||
|
|
"width", (gdouble) (x2 - x1),
|
||
|
|
"height", (gdouble) (y2 - y1),
|
||
|
|
"edit-mask", edit_mask,
|
||
|
|
NULL);
|
||
|
|
|
||
|
|
pika_canvas_item_end_change (PIKA_CANVAS_ITEM (boundary));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
g_list_free (shown_layers);
|
||
|
|
}
|
