1 /* GIMP - The GNU Image Manipulation Program
2  * Copyright (C) 1995 Spencer Kimball and Peter Mattis
3  *
4  * gimpbrushselect.c
5  * Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
6  *
7  * This program is free software: you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
19  */
20 
21 #include "config.h"
22 
23 #include <gegl.h>
24 #include <gtk/gtk.h>
25 
26 #include "libgimpbase/gimpbase.h"
27 #include "libgimpwidgets/gimpwidgets.h"
28 
29 #include "widgets-types.h"
30 
31 #include "gegl/gimp-babl-compat.h"
32 
33 #include "core/gimp.h"
34 #include "core/gimpcontext.h"
35 #include "core/gimpbrush.h"
36 #include "core/gimpparamspecs.h"
37 #include "core/gimptempbuf.h"
38 
39 #include "pdb/gimppdb.h"
40 
41 #include "gimpbrushfactoryview.h"
42 #include "gimpbrushselect.h"
43 #include "gimpcontainerbox.h"
44 #include "gimplayermodebox.h"
45 #include "gimpspinscale.h"
46 
47 #include "gimp-intl.h"
48 
49 
50 enum
51 {
52   PROP_0,
53   PROP_OPACITY,
54   PROP_PAINT_MODE,
55   PROP_SPACING
56 };
57 
58 
59 static void             gimp_brush_select_constructed  (GObject         *object);
60 static void             gimp_brush_select_set_property (GObject         *object,
61                                                         guint            property_id,
62                                                         const GValue    *value,
63                                                         GParamSpec      *pspec);
64 
65 static GimpValueArray * gimp_brush_select_run_callback (GimpPdbDialog   *dialog,
66                                                         GimpObject      *object,
67                                                         gboolean         closing,
68                                                         GError         **error);
69 
70 static void          gimp_brush_select_opacity_changed (GimpContext     *context,
71                                                         gdouble          opacity,
72                                                         GimpBrushSelect *select);
73 static void          gimp_brush_select_mode_changed    (GimpContext     *context,
74                                                         GimpLayerMode    paint_mode,
75                                                         GimpBrushSelect *select);
76 
77 static void          gimp_brush_select_opacity_update  (GtkAdjustment   *adj,
78                                                         GimpBrushSelect *select);
79 static void          gimp_brush_select_spacing_update  (GtkAdjustment   *adj,
80                                                         GimpBrushSelect *select);
81 
82 
G_DEFINE_TYPE(GimpBrushSelect,gimp_brush_select,GIMP_TYPE_PDB_DIALOG)83 G_DEFINE_TYPE (GimpBrushSelect, gimp_brush_select, GIMP_TYPE_PDB_DIALOG)
84 
85 #define parent_class gimp_brush_select_parent_class
86 
87 
88 static void
89 gimp_brush_select_class_init (GimpBrushSelectClass *klass)
90 {
91   GObjectClass       *object_class = G_OBJECT_CLASS (klass);
92   GimpPdbDialogClass *pdb_class    = GIMP_PDB_DIALOG_CLASS (klass);
93 
94   object_class->constructed  = gimp_brush_select_constructed;
95   object_class->set_property = gimp_brush_select_set_property;
96 
97   pdb_class->run_callback    = gimp_brush_select_run_callback;
98 
99   g_object_class_install_property (object_class, PROP_OPACITY,
100                                    g_param_spec_double ("opacity", NULL, NULL,
101                                                         GIMP_OPACITY_TRANSPARENT,
102                                                         GIMP_OPACITY_OPAQUE,
103                                                         GIMP_OPACITY_OPAQUE,
104                                                         GIMP_PARAM_WRITABLE |
105                                                         G_PARAM_CONSTRUCT));
106 
107   g_object_class_install_property (object_class, PROP_PAINT_MODE,
108                                    g_param_spec_enum ("paint-mode", NULL, NULL,
109                                                       GIMP_TYPE_LAYER_MODE,
110                                                       GIMP_LAYER_MODE_NORMAL,
111                                                       GIMP_PARAM_WRITABLE |
112                                                       G_PARAM_CONSTRUCT));
113 
114   g_object_class_install_property (object_class, PROP_SPACING,
115                                    g_param_spec_int ("spacing", NULL, NULL,
116                                                      -G_MAXINT, 1000, -1,
117                                                      GIMP_PARAM_WRITABLE |
118                                                      G_PARAM_CONSTRUCT));
119 }
120 
121 static void
gimp_brush_select_init(GimpBrushSelect * select)122 gimp_brush_select_init (GimpBrushSelect *select)
123 {
124 }
125 
126 static void
gimp_brush_select_constructed(GObject * object)127 gimp_brush_select_constructed (GObject *object)
128 {
129   GimpPdbDialog   *dialog = GIMP_PDB_DIALOG (object);
130   GimpBrushSelect *select = GIMP_BRUSH_SELECT (object);
131   GtkWidget       *content_area;
132   GtkWidget       *vbox;
133   GtkWidget       *scale;
134   GtkWidget       *hbox;
135   GtkWidget       *label;
136   GtkAdjustment   *spacing_adj;
137 
138   G_OBJECT_CLASS (parent_class)->constructed (object);
139 
140   gimp_context_set_opacity    (dialog->context, select->initial_opacity);
141   gimp_context_set_paint_mode (dialog->context, select->initial_mode);
142 
143   g_signal_connect (dialog->context, "opacity-changed",
144                     G_CALLBACK (gimp_brush_select_opacity_changed),
145                     dialog);
146   g_signal_connect (dialog->context, "paint-mode-changed",
147                     G_CALLBACK (gimp_brush_select_mode_changed),
148                     dialog);
149 
150   dialog->view =
151     gimp_brush_factory_view_new (GIMP_VIEW_TYPE_GRID,
152                                  dialog->context->gimp->brush_factory,
153                                  dialog->context,
154                                  FALSE,
155                                  GIMP_VIEW_SIZE_MEDIUM, 1,
156                                  dialog->menu_factory);
157 
158   gimp_container_box_set_size_request (GIMP_CONTAINER_BOX (GIMP_CONTAINER_EDITOR (dialog->view)->view),
159                                        5 * (GIMP_VIEW_SIZE_MEDIUM + 2),
160                                        5 * (GIMP_VIEW_SIZE_MEDIUM + 2));
161 
162   gtk_container_set_border_width (GTK_CONTAINER (dialog->view), 12);
163 
164   content_area = gtk_dialog_get_content_area (GTK_DIALOG (dialog));
165   gtk_box_pack_start (GTK_BOX (content_area), dialog->view, TRUE, TRUE, 0);
166   gtk_widget_show (dialog->view);
167 
168   vbox = GTK_WIDGET (GIMP_CONTAINER_EDITOR (dialog->view)->view);
169 
170   /*  Create the opacity scale widget  */
171   select->opacity_data =
172     GTK_ADJUSTMENT (gtk_adjustment_new (gimp_context_get_opacity (dialog->context) * 100.0,
173                                         0.0, 100.0,
174                                         1.0, 10.0, 0.0));
175 
176   scale = gimp_spin_scale_new (select->opacity_data,
177                                _("Opacity"), 1);
178   gtk_box_pack_end (GTK_BOX (vbox), scale, FALSE, FALSE, 0);
179   gtk_widget_show (scale);
180 
181   g_signal_connect (select->opacity_data, "value-changed",
182                     G_CALLBACK (gimp_brush_select_opacity_update),
183                     select);
184 
185   /*  Create the paint mode option menu  */
186   hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 4);
187   gtk_box_pack_end (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
188   gtk_widget_show (hbox);
189 
190   label = gtk_label_new (_("Mode:"));
191   gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
192   gtk_widget_show (label);
193 
194   select->layer_mode_box = gimp_layer_mode_box_new (GIMP_LAYER_MODE_CONTEXT_PAINT);
195   gtk_box_pack_start (GTK_BOX (hbox), select->layer_mode_box, TRUE, TRUE, 0);
196   gtk_widget_show (select->layer_mode_box);
197 
198   g_object_bind_property (G_OBJECT (dialog->context),        "paint-mode",
199                           G_OBJECT (select->layer_mode_box), "layer-mode",
200                           G_BINDING_BIDIRECTIONAL |
201                           G_BINDING_SYNC_CREATE);
202 
203   spacing_adj = GIMP_BRUSH_FACTORY_VIEW (dialog->view)->spacing_adjustment;
204 
205   /*  Use passed spacing instead of brushes default  */
206   if (select->spacing >= 0)
207     gtk_adjustment_set_value (spacing_adj, select->spacing);
208 
209   g_signal_connect (spacing_adj, "value-changed",
210                     G_CALLBACK (gimp_brush_select_spacing_update),
211                     select);
212 }
213 
214 static void
gimp_brush_select_set_property(GObject * object,guint property_id,const GValue * value,GParamSpec * pspec)215 gimp_brush_select_set_property (GObject      *object,
216                                 guint         property_id,
217                                 const GValue *value,
218                                 GParamSpec   *pspec)
219 {
220   GimpPdbDialog   *dialog = GIMP_PDB_DIALOG (object);
221   GimpBrushSelect *select = GIMP_BRUSH_SELECT (object);
222 
223   switch (property_id)
224     {
225     case PROP_OPACITY:
226       if (dialog->view)
227         gimp_context_set_opacity (dialog->context, g_value_get_double (value));
228       else
229         select->initial_opacity = g_value_get_double (value);
230       break;
231     case PROP_PAINT_MODE:
232       if (dialog->view)
233         gimp_context_set_paint_mode (dialog->context, g_value_get_enum (value));
234       else
235         select->initial_mode = g_value_get_enum (value);
236       break;
237     case PROP_SPACING:
238       if (dialog->view)
239         {
240           if (g_value_get_int (value) >= 0)
241             gtk_adjustment_set_value (GIMP_BRUSH_FACTORY_VIEW (dialog->view)->spacing_adjustment,
242                                       g_value_get_int (value));
243         }
244       else
245         {
246           select->spacing = g_value_get_int (value);
247         }
248       break;
249     default:
250       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
251       break;
252     }
253 }
254 
255 static GimpValueArray *
gimp_brush_select_run_callback(GimpPdbDialog * dialog,GimpObject * object,gboolean closing,GError ** error)256 gimp_brush_select_run_callback (GimpPdbDialog  *dialog,
257                                 GimpObject     *object,
258                                 gboolean        closing,
259                                 GError        **error)
260 {
261   GimpBrush      *brush = GIMP_BRUSH (object);
262   GimpTempBuf    *mask  = gimp_brush_get_mask (brush);
263   const Babl     *format;
264   gpointer        data;
265   GimpArray      *array;
266   GimpValueArray *return_vals;
267 
268   format = gimp_babl_compat_u8_mask_format (gimp_temp_buf_get_format (mask));
269   data   = gimp_temp_buf_lock (mask, format, GEGL_ACCESS_READ);
270 
271   array = gimp_array_new (data,
272                           gimp_temp_buf_get_width         (mask) *
273                           gimp_temp_buf_get_height        (mask) *
274                           babl_format_get_bytes_per_pixel (format),
275                           TRUE);
276 
277   return_vals =
278     gimp_pdb_execute_procedure_by_name (dialog->pdb,
279                                         dialog->caller_context,
280                                         NULL, error,
281                                         dialog->callback_name,
282                                         G_TYPE_STRING,        gimp_object_get_name (object),
283                                         G_TYPE_DOUBLE,        gimp_context_get_opacity (dialog->context) * 100.0,
284                                         GIMP_TYPE_INT32,      GIMP_BRUSH_SELECT (dialog)->spacing,
285                                         GIMP_TYPE_INT32,      gimp_context_get_paint_mode (dialog->context),
286                                         GIMP_TYPE_INT32,      gimp_brush_get_width  (brush),
287                                         GIMP_TYPE_INT32,      gimp_brush_get_height (brush),
288                                         GIMP_TYPE_INT32,      array->length,
289                                         GIMP_TYPE_INT8_ARRAY, array,
290                                         GIMP_TYPE_INT32,      closing,
291                                         G_TYPE_NONE);
292 
293   gimp_array_free (array);
294 
295   gimp_temp_buf_unlock (mask, data);
296 
297   return return_vals;
298 }
299 
300 static void
gimp_brush_select_opacity_changed(GimpContext * context,gdouble opacity,GimpBrushSelect * select)301 gimp_brush_select_opacity_changed (GimpContext     *context,
302                                    gdouble          opacity,
303                                    GimpBrushSelect *select)
304 {
305   g_signal_handlers_block_by_func (select->opacity_data,
306                                    gimp_brush_select_opacity_update,
307                                    select);
308 
309   gtk_adjustment_set_value (select->opacity_data, opacity * 100.0);
310 
311   g_signal_handlers_unblock_by_func (select->opacity_data,
312                                      gimp_brush_select_opacity_update,
313                                      select);
314 
315   gimp_pdb_dialog_run_callback (GIMP_PDB_DIALOG (select), FALSE);
316 }
317 
318 static void
gimp_brush_select_mode_changed(GimpContext * context,GimpLayerMode paint_mode,GimpBrushSelect * select)319 gimp_brush_select_mode_changed (GimpContext     *context,
320                                 GimpLayerMode    paint_mode,
321                                 GimpBrushSelect *select)
322 {
323   gimp_pdb_dialog_run_callback (GIMP_PDB_DIALOG (select), FALSE);
324 }
325 
326 static void
gimp_brush_select_opacity_update(GtkAdjustment * adjustment,GimpBrushSelect * select)327 gimp_brush_select_opacity_update (GtkAdjustment   *adjustment,
328                                   GimpBrushSelect *select)
329 {
330   gimp_context_set_opacity (GIMP_PDB_DIALOG (select)->context,
331                             gtk_adjustment_get_value (adjustment) / 100.0);
332 }
333 
334 static void
gimp_brush_select_spacing_update(GtkAdjustment * adjustment,GimpBrushSelect * select)335 gimp_brush_select_spacing_update (GtkAdjustment   *adjustment,
336                                   GimpBrushSelect *select)
337 {
338   gdouble value = gtk_adjustment_get_value (adjustment);
339 
340   if (select->spacing != value)
341     {
342       select->spacing = value;
343 
344       gimp_pdb_dialog_run_callback (GIMP_PDB_DIALOG (select), FALSE);
345     }
346 }
347