3 * Copyright (C) 2001-2009 Jim Evins <evins@snaught.com>.
5 * This file is part of gLabels.
7 * gLabels 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.
12 * gLabels 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.
17 * You should have received a copy of the GNU General Public License
18 * along with gLabels. If not, see <http://www.gnu.org/licenses/>.
23 #include "label-object.h"
25 #include <glib/gi18n.h>
34 /*========================================================*/
35 /* Private defines. */
36 /*========================================================*/
38 #define DEFAULT_SHADOW_X_OFFSET (3.6)
39 #define DEFAULT_SHADOW_Y_OFFSET (3.6)
40 #define DEFAULT_SHADOW_COLOR GL_COLOR_BLACK
41 #define DEFAULT_SHADOW_OPACITY (0.5)
43 #define HANDLE_FILL_RGBA_ARGS 0.0, 0.75, 0.0, 0.4
44 #define HANDLE_OUTLINE_RGBA_ARGS 0.0, 0.0, 0.0, 0.8
46 #define HANDLE_OUTLINE_WIDTH_PIXELS 1.0
47 #define HANDLE_PIXELS 7
50 /*========================================================*/
52 /*========================================================*/
54 struct _glLabelObjectPrivate {
58 gboolean selected_flag;
63 cairo_matrix_t matrix;
67 gboolean shadow_state;
70 glColorNode *shadow_color_node;
71 gdouble shadow_opacity;
81 /*========================================================*/
82 /* Private globals. */
83 /*========================================================*/
85 static guint instance = 0;
87 static guint signals[LAST_SIGNAL] = {0};
90 /*========================================================*/
91 /* Private function prototypes. */
92 /*========================================================*/
94 static void gl_label_object_finalize (GObject *object);
96 static void set_size (glLabelObject *object,
102 /*****************************************************************************/
103 /* Boilerplate object stuff. */
104 /*****************************************************************************/
105 G_DEFINE_TYPE (glLabelObject, gl_label_object, G_TYPE_OBJECT)
109 gl_label_object_class_init (glLabelObjectClass *class)
111 GObjectClass *object_class = G_OBJECT_CLASS (class);
113 gl_debug (DEBUG_LABEL, "START");
115 gl_label_object_parent_class = g_type_class_peek_parent (class);
117 object_class->finalize = gl_label_object_finalize;
119 class->set_size = set_size;
120 class->draw_handles = gl_label_object_draw_handles_box; /* Default style */
121 class->handle_at = gl_label_object_box_handle_at; /* Default style */
124 g_signal_new ("changed",
125 G_OBJECT_CLASS_TYPE (object_class),
127 G_STRUCT_OFFSET (glLabelObjectClass, changed),
129 gl_marshal_VOID__VOID,
134 g_signal_new ("moved",
135 G_OBJECT_CLASS_TYPE (object_class),
137 G_STRUCT_OFFSET (glLabelObjectClass, moved),
139 gl_marshal_VOID__VOID,
143 gl_debug (DEBUG_LABEL, "END");
148 gl_label_object_init (glLabelObject *object)
150 gl_debug (DEBUG_LABEL, "START");
152 object->priv = g_new0 (glLabelObjectPrivate, 1);
154 object->priv->name = g_strdup_printf ("object%d", instance++);
156 cairo_matrix_init_identity (&object->priv->matrix);
158 object->priv->shadow_state = FALSE;
159 object->priv->shadow_x = DEFAULT_SHADOW_X_OFFSET;
160 object->priv->shadow_y = DEFAULT_SHADOW_Y_OFFSET;
161 object->priv->shadow_color_node = gl_color_node_new_default ();
162 object->priv->shadow_color_node->color = DEFAULT_SHADOW_COLOR;
163 object->priv->shadow_opacity = DEFAULT_SHADOW_OPACITY;
165 gl_debug (DEBUG_LABEL, "END");
170 gl_label_object_finalize (GObject *object)
172 glLabelObject *label_object = GL_LABEL_OBJECT (object);
174 gl_debug (DEBUG_LABEL, "START");
176 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
178 g_free (label_object->priv->name);
179 g_free (label_object->priv);
181 G_OBJECT_CLASS (gl_label_object_parent_class)->finalize (object);
183 gl_debug (DEBUG_LABEL, "END");
187 /*****************************************************************************/
188 /* New label object. */
189 /*****************************************************************************/
191 gl_label_object_new (glLabel *label)
193 glLabelObject *object;
195 gl_debug (DEBUG_LABEL, "START");
197 object = g_object_new (gl_label_object_get_type(), NULL);
199 gl_label_object_set_parent (object, label);
201 gl_debug (DEBUG_LABEL, "END");
203 return G_OBJECT (object);
207 /*****************************************************************************/
208 /* Duplicate object. */
209 /*****************************************************************************/
211 gl_label_object_dup (glLabelObject *src_object,
214 glLabelObject *dst_object;
216 cairo_matrix_t matrix;
217 gboolean shadow_state;
218 gdouble shadow_x, shadow_y;
219 glColorNode *shadow_color_node;
220 gdouble shadow_opacity;
222 gl_debug (DEBUG_LABEL, "START");
224 g_return_val_if_fail (src_object && GL_IS_LABEL_OBJECT (src_object), NULL);
226 dst_object = g_object_new (G_OBJECT_TYPE(src_object), NULL);
228 gl_label_object_set_parent (dst_object, label);
229 dst_object->priv->selected_flag = src_object->priv->selected_flag;
231 gl_label_object_get_position (src_object, &x, &y);
232 gl_label_object_get_raw_size (src_object, &w, &h);
233 gl_label_object_get_matrix (src_object, &matrix);
234 gl_label_object_get_shadow_offset (src_object, &shadow_x, &shadow_y);
235 shadow_color_node = gl_label_object_get_shadow_color (src_object);
236 shadow_opacity = gl_label_object_get_shadow_opacity (src_object);
237 shadow_state = gl_label_object_get_shadow_state (src_object);
239 gl_label_object_set_position (dst_object, x, y, FALSE);
240 gl_label_object_set_raw_size (dst_object, w, h, FALSE);
241 gl_label_object_set_matrix (dst_object, &matrix);
242 gl_label_object_set_shadow_offset (dst_object, shadow_x, shadow_y, FALSE);
243 gl_label_object_set_shadow_color (dst_object, shadow_color_node, FALSE);
244 gl_label_object_set_shadow_opacity (dst_object, shadow_opacity, FALSE);
245 gl_label_object_set_shadow_state (dst_object, shadow_state, FALSE);
247 gl_color_node_free (&shadow_color_node);
249 if ( GL_LABEL_OBJECT_GET_CLASS(src_object)->copy != NULL )
251 /* We have an object specific method, use it */
252 GL_LABEL_OBJECT_GET_CLASS(src_object)->copy (dst_object, src_object);
255 gl_debug (DEBUG_LABEL, "END");
261 /*****************************************************************************/
262 /* Emit "changed" signal (for derived objects). */
263 /*****************************************************************************/
265 gl_label_object_emit_changed (glLabelObject *object)
267 gl_debug (DEBUG_LABEL, "START");
269 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
271 g_signal_emit (G_OBJECT(object), signals[CHANGED], 0);
273 gl_debug (DEBUG_LABEL, "END");
277 /*****************************************************************************/
278 /* Set parent label of object. */
279 /*****************************************************************************/
281 gl_label_object_set_parent (glLabelObject *object,
284 gl_debug (DEBUG_LABEL, "START");
286 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
287 g_return_if_fail (label && GL_IS_LABEL (label));
289 object->priv->parent = label;
293 /*****************************************************************************/
294 /* Get parent label of object. */
295 /*****************************************************************************/
297 gl_label_object_get_parent (glLabelObject *object)
299 gl_debug (DEBUG_LABEL, "START");
301 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), NULL);
303 gl_debug (DEBUG_LABEL, "END");
305 return object->priv->parent;
309 /*****************************************************************************/
311 /*****************************************************************************/
313 gl_label_object_select (glLabelObject *object)
315 object->priv->selected_flag = TRUE;
319 /*****************************************************************************/
320 /* Unselect object. */
321 /*****************************************************************************/
323 gl_label_object_unselect (glLabelObject *object)
325 object->priv->selected_flag = FALSE;
329 /*****************************************************************************/
330 /* Is object selected? */
331 /*****************************************************************************/
333 gl_label_object_is_selected (glLabelObject *object)
335 return object->priv->selected_flag;
339 /*****************************************************************************/
340 /* Set name of object. */
341 /*****************************************************************************/
343 gl_label_object_set_name (glLabelObject *object,
346 gl_debug (DEBUG_LABEL, "START");
348 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
350 g_free(object->priv->name);
351 object->priv->name = name;
353 gl_label_object_emit_changed (object);
355 gl_debug (DEBUG_LABEL, "END");
359 /*****************************************************************************/
360 /* Get name of object. */
361 /*****************************************************************************/
363 gl_label_object_get_name (glLabelObject *object)
365 gl_debug (DEBUG_LABEL, "START");
367 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), NULL);
369 gl_debug (DEBUG_LABEL, "END");
371 return g_strdup(object->priv->name);
375 /*****************************************************************************/
376 /* Set position of object. */
377 /*****************************************************************************/
379 gl_label_object_set_position (glLabelObject *object,
386 gl_debug (DEBUG_LABEL, "START");
388 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
390 if ( (x != object->priv->x) || (y != object->priv->y) )
394 gl_label_checkpoint (object->priv->parent, _("Move"));
397 dx = x - object->priv->x;
398 dy = y - object->priv->y;
403 g_signal_emit (G_OBJECT(object), signals[MOVED], 0);
407 gl_debug (DEBUG_LABEL, "END");
411 /*****************************************************************************/
412 /* Set position of object relative to old position. */
413 /*****************************************************************************/
415 gl_label_object_set_position_relative (glLabelObject *object,
420 gl_debug (DEBUG_LABEL, "START");
422 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
424 if ( (dx != 0.0) || (dy != 0.0) )
428 gl_label_checkpoint (object->priv->parent, _("Move"));
431 object->priv->x += dx;
432 object->priv->y += dy;
434 gl_debug (DEBUG_LABEL, " x = %f, y= %f",
438 g_signal_emit (G_OBJECT(object), signals[MOVED], 0);
441 gl_debug (DEBUG_LABEL, "END");
445 /*****************************************************************************/
446 /* Get position of object. */
447 /*****************************************************************************/
449 gl_label_object_get_position (glLabelObject *object,
453 gl_debug (DEBUG_LABEL, "START");
455 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
457 *x = object->priv->x;
458 *y = object->priv->y;
460 gl_debug (DEBUG_LABEL, "END");
464 /*---------------------------------------------------------------------------*/
465 /* PRIVATE. Default set size method. */
466 /*---------------------------------------------------------------------------*/
468 set_size (glLabelObject *object,
473 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
475 if ( (object->priv->w != w) || (object->priv->h != h) )
479 gl_label_checkpoint (object->priv->parent, _("Resize"));
485 gl_label_object_emit_changed (object);
490 /*****************************************************************************/
491 /* Set size of object. */
492 /*****************************************************************************/
494 gl_label_object_set_size (glLabelObject *object,
499 gl_debug (DEBUG_LABEL, "START");
501 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
503 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_size != NULL )
505 /* We have an object specific method, use it */
506 GL_LABEL_OBJECT_GET_CLASS(object)->set_size (object, w, h, checkpoint);
508 object->priv->aspect_ratio = h / w;
511 gl_debug (DEBUG_LABEL, "END");
515 /*****************************************************************************/
516 /* Set raw size of object. */
517 /*****************************************************************************/
519 gl_label_object_set_raw_size (glLabelObject *object,
524 gl_debug (DEBUG_LABEL, "START");
526 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
528 set_size (object, w, h, checkpoint);
529 object->priv->aspect_ratio = h / w;
531 gl_debug (DEBUG_LABEL, "END");
535 /*****************************************************************************/
536 /* Set size of object honoring current aspect ratio. */
537 /*****************************************************************************/
539 gl_label_object_set_size_honor_aspect (glLabelObject *object,
544 gl_debug (DEBUG_LABEL, "START");
546 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
548 if ( h > w*object->priv->aspect_ratio )
550 h = w * object->priv->aspect_ratio;
554 w = h / object->priv->aspect_ratio;
557 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_size != NULL )
559 /* We have an object specific method, use it */
560 GL_LABEL_OBJECT_GET_CLASS(object)->set_size (object, w, h, checkpoint);
563 gl_debug (DEBUG_LABEL, "END");
567 /*****************************************************************************/
568 /* Get raw size method (don't let object content adjust size). */
569 /*****************************************************************************/
571 gl_label_object_get_raw_size (glLabelObject *object,
575 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
577 *w = object->priv->w;
578 *h = object->priv->h;
582 /*****************************************************************************/
583 /* Get size of object. */
584 /*****************************************************************************/
586 gl_label_object_get_size (glLabelObject *object,
590 gl_debug (DEBUG_LABEL, "START");
592 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
594 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_size != NULL )
596 /* We have an object specific method, use it */
597 GL_LABEL_OBJECT_GET_CLASS(object)->get_size (object, w, h);
601 gl_label_object_get_raw_size (object, w, h);
604 gl_debug (DEBUG_LABEL, "END");
608 /*****************************************************************************/
609 /* Get extent of object. */
610 /*****************************************************************************/
612 gl_label_object_get_extent (glLabelObject *object,
613 glLabelRegion *region)
617 gdouble xa1, ya1, xa2, ya2, xa3, ya3, xa4, ya4;
618 cairo_matrix_t matrix;
620 gl_debug (DEBUG_LABEL, "START");
622 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
624 gl_label_object_get_size (object, &w, &h);
625 line_w = gl_label_object_get_line_width (object);
627 /* setup untransformed corners of bounding box, account for line width */
637 /* transform these points */
638 gl_label_object_get_matrix (object, &matrix);
639 cairo_matrix_transform_point (&matrix, &xa1, &ya1);
640 cairo_matrix_transform_point (&matrix, &xa2, &ya2);
641 cairo_matrix_transform_point (&matrix, &xa3, &ya3);
642 cairo_matrix_transform_point (&matrix, &xa4, &ya4);
644 /* now find the maximum extent of these points in x and y */
645 region->x1 = MIN (xa1, MIN (xa2, MIN (xa3, xa4))) + object->priv->x;
646 region->y1 = MIN (ya1, MIN (ya2, MIN (ya3, ya4))) + object->priv->y;
647 region->x2 = MAX (xa1, MAX (xa2, MAX (xa3, xa4))) + object->priv->x;
648 region->y2 = MAX (ya1, MAX (ya2, MAX (ya3, ya4))) + object->priv->y;
650 gl_debug (DEBUG_LABEL, "END");
654 /*****************************************************************************/
655 /* Can text properties be set for this object? */
656 /*****************************************************************************/
658 gl_label_object_can_text (glLabelObject *object)
660 gl_debug (DEBUG_LABEL, "");
662 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
664 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_font_family != NULL )
675 /*****************************************************************************/
676 /* Set font family for all text contained in object. */
677 /*****************************************************************************/
679 gl_label_object_set_font_family (glLabelObject *object,
680 const gchar *font_family,
683 gl_debug (DEBUG_LABEL, "START");
685 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
687 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_font_family != NULL )
689 /* We have an object specific method, use it */
690 GL_LABEL_OBJECT_GET_CLASS(object)->set_font_family (object, font_family, checkpoint);
693 gl_debug (DEBUG_LABEL, "END");
697 /****************************************************************************/
698 /* Set font size for all text contained in object. */
699 /****************************************************************************/
701 gl_label_object_set_font_size (glLabelObject *object,
705 gl_debug (DEBUG_LABEL, "START");
707 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
709 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_font_size != NULL )
711 /* We have an object specific method, use it */
712 GL_LABEL_OBJECT_GET_CLASS(object)->set_font_size (object, font_size, checkpoint);
715 gl_debug (DEBUG_LABEL, "END");
719 /****************************************************************************/
720 /* Set font weight for all text contained in object. */
721 /****************************************************************************/
723 gl_label_object_set_font_weight (glLabelObject *object,
724 PangoWeight font_weight,
727 gl_debug (DEBUG_LABEL, "START");
729 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
731 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_font_weight != NULL )
733 /* We have an object specific method, use it */
734 GL_LABEL_OBJECT_GET_CLASS(object)->set_font_weight (object, font_weight, checkpoint);
737 gl_debug (DEBUG_LABEL, "END");
741 /****************************************************************************/
742 /* Set font italic flag for all text contained in object. */
743 /****************************************************************************/
745 gl_label_object_set_font_italic_flag (glLabelObject *object,
746 gboolean font_italic_flag,
749 gl_debug (DEBUG_LABEL, "START");
751 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
753 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_font_italic_flag != NULL )
755 /* We have an object specific method, use it */
756 GL_LABEL_OBJECT_GET_CLASS(object)->set_font_italic_flag (object, font_italic_flag, checkpoint);
759 gl_debug (DEBUG_LABEL, "END");
763 /****************************************************************************/
764 /* Set text alignment for all text contained in object. */
765 /****************************************************************************/
767 gl_label_object_set_text_alignment (glLabelObject *object,
768 PangoAlignment text_alignment,
771 gl_debug (DEBUG_LABEL, "START");
773 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
775 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_text_alignment != NULL )
777 /* We have an object specific method, use it */
778 GL_LABEL_OBJECT_GET_CLASS(object)->set_text_alignment (object, text_alignment, checkpoint);
781 gl_debug (DEBUG_LABEL, "END");
785 /****************************************************************************/
786 /* Set text line spacing for all text contained in object. */
787 /****************************************************************************/
789 gl_label_object_set_text_line_spacing (glLabelObject *object,
790 gdouble text_line_spacing,
793 gl_debug (DEBUG_LABEL, "START");
795 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
797 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_text_line_spacing != NULL )
799 /* We have an object specific method, use it */
800 GL_LABEL_OBJECT_GET_CLASS(object)->set_text_line_spacing (object, text_line_spacing, checkpoint);
803 gl_debug (DEBUG_LABEL, "END");
807 /****************************************************************************/
808 /* Set text color for all text contained in object. */
809 /****************************************************************************/
811 gl_label_object_set_text_color (glLabelObject *object,
812 glColorNode *text_color_node,
815 gl_debug (DEBUG_LABEL, "START");
817 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
819 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_text_color != NULL )
821 /* We have an object specific method, use it */
822 GL_LABEL_OBJECT_GET_CLASS(object)->set_text_color (object, text_color_node, checkpoint);
825 gl_debug (DEBUG_LABEL, "END");
829 /*****************************************************************************/
830 /* Get font family for all text contained in object. */
831 /*****************************************************************************/
833 gl_label_object_get_font_family (glLabelObject *object)
837 gl_debug (DEBUG_LABEL, "START");
839 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), NULL);
841 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_font_family != NULL )
843 /* We have an object specific method, use it */
844 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_font_family (object);
847 gl_debug (DEBUG_LABEL, "END");
853 /****************************************************************************/
854 /* Get font size for all text contained in object. */
855 /****************************************************************************/
857 gl_label_object_get_font_size (glLabelObject *object)
861 gl_debug (DEBUG_LABEL, "START");
863 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), 0.0);
865 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_font_size != NULL )
867 /* We have an object specific method, use it */
868 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_font_size (object);
871 gl_debug (DEBUG_LABEL, "END");
877 /****************************************************************************/
878 /* Get font weight for all text contained in object. */
879 /****************************************************************************/
881 gl_label_object_get_font_weight (glLabelObject *object)
883 PangoWeight ret = PANGO_WEIGHT_NORMAL;
885 gl_debug (DEBUG_LABEL, "START");
887 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), PANGO_WEIGHT_NORMAL);
889 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_font_weight != NULL )
891 /* We have an object specific method, use it */
892 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_font_weight (object);
895 gl_debug (DEBUG_LABEL, "END");
901 /****************************************************************************/
902 /* Get font italic flag for all text contained in object. */
903 /****************************************************************************/
905 gl_label_object_get_font_italic_flag (glLabelObject *object)
907 gboolean ret = FALSE;
909 gl_debug (DEBUG_LABEL, "START");
911 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
913 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_font_italic_flag != NULL )
915 /* We have an object specific method, use it */
916 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_font_italic_flag (object);
919 gl_debug (DEBUG_LABEL, "END");
925 /****************************************************************************/
926 /* Get text alignment for all text contained in object. */
927 /****************************************************************************/
929 gl_label_object_get_text_alignment (glLabelObject *object)
931 PangoAlignment ret = PANGO_ALIGN_LEFT;
933 gl_debug (DEBUG_LABEL, "START");
935 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), PANGO_ALIGN_LEFT);
937 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_text_alignment != NULL )
939 /* We have an object specific method, use it */
940 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_text_alignment (object);
943 gl_debug (DEBUG_LABEL, "END");
949 /****************************************************************************/
950 /* Get text line spacing for all text contained in object. */
951 /****************************************************************************/
953 gl_label_object_get_text_line_spacing (glLabelObject *object)
957 gl_debug (DEBUG_LABEL, "START");
959 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), 0.0);
961 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_text_line_spacing != NULL )
963 /* We have an object specific method, use it */
964 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_text_line_spacing (object);
967 gl_debug (DEBUG_LABEL, "END");
973 /****************************************************************************/
974 /* Get text color for all text contained in object. */
975 /****************************************************************************/
977 gl_label_object_get_text_color (glLabelObject *object)
979 glColorNode *ret = NULL;
981 gl_debug (DEBUG_LABEL, "START");
983 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), 0);
985 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_text_color != NULL )
987 /* We have an object specific method, use it */
988 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_text_color (object);
991 gl_debug (DEBUG_LABEL, "END");
997 /*****************************************************************************/
998 /* Can fill properties be set for this object? */
999 /*****************************************************************************/
1001 gl_label_object_can_fill (glLabelObject *object)
1003 gl_debug (DEBUG_LABEL, "");
1005 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
1007 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_fill_color != NULL )
1019 /****************************************************************************/
1020 /* Set fill color for object. */
1021 /****************************************************************************/
1023 gl_label_object_set_fill_color (glLabelObject *object,
1024 glColorNode *fill_color_node,
1025 gboolean checkpoint)
1027 gl_debug (DEBUG_LABEL, "START");
1029 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1031 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_fill_color != NULL )
1033 /* We have an object specific method, use it */
1034 GL_LABEL_OBJECT_GET_CLASS(object)->set_fill_color (object, fill_color_node, checkpoint);
1037 gl_debug (DEBUG_LABEL, "END");
1041 /****************************************************************************/
1042 /* Get fill color for object. */
1043 /****************************************************************************/
1045 gl_label_object_get_fill_color (glLabelObject *object)
1047 glColorNode *ret = NULL;
1049 gl_debug (DEBUG_LABEL, "START");
1051 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), 0);
1053 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_fill_color != NULL )
1055 /* We have an object specific method, use it */
1056 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_fill_color (object);
1059 gl_debug (DEBUG_LABEL, "END");
1065 /*****************************************************************************/
1066 /* Can line color property be set for this object? */
1067 /*****************************************************************************/
1069 gl_label_object_can_line_color (glLabelObject *object)
1071 gl_debug (DEBUG_LABEL, "");
1073 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
1075 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_line_color != NULL )
1087 /****************************************************************************/
1088 /* Set line color for object. */
1089 /****************************************************************************/
1091 gl_label_object_set_line_color (glLabelObject *object,
1092 glColorNode *line_color_node,
1093 gboolean checkpoint)
1095 gl_debug (DEBUG_LABEL, "START");
1097 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1099 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_line_color != NULL )
1101 /* We have an object specific method, use it */
1102 GL_LABEL_OBJECT_GET_CLASS(object)->set_line_color (object, line_color_node, checkpoint);
1105 gl_debug (DEBUG_LABEL, "END");
1109 /****************************************************************************/
1110 /* Get line color for object. */
1111 /****************************************************************************/
1113 gl_label_object_get_line_color (glLabelObject *object)
1115 glColorNode *ret = NULL;
1117 gl_debug (DEBUG_LABEL, "START");
1119 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), 0);
1121 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_line_color != NULL )
1123 /* We have an object specific method, use it */
1124 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_line_color (object);
1127 gl_debug (DEBUG_LABEL, "END");
1133 /*****************************************************************************/
1134 /* Can line width property be set for this object? */
1135 /*****************************************************************************/
1137 gl_label_object_can_line_width (glLabelObject *object)
1139 gl_debug (DEBUG_LABEL, "");
1141 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
1143 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_line_width != NULL )
1155 /****************************************************************************/
1156 /* Set line width for object. */
1157 /****************************************************************************/
1159 gl_label_object_set_line_width (glLabelObject *object,
1161 gboolean checkpoint)
1163 gl_debug (DEBUG_LABEL, "START");
1165 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1167 if ( GL_LABEL_OBJECT_GET_CLASS(object)->set_line_width != NULL )
1169 /* We have an object specific method, use it */
1170 GL_LABEL_OBJECT_GET_CLASS(object)->set_line_width (object, line_width, checkpoint);
1173 gl_debug (DEBUG_LABEL, "END");
1177 /****************************************************************************/
1178 /* Get line width for object. */
1179 /****************************************************************************/
1181 gl_label_object_get_line_width (glLabelObject *object)
1185 gl_debug (DEBUG_LABEL, "START");
1187 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), 0.0);
1189 if ( GL_LABEL_OBJECT_GET_CLASS(object)->get_line_width != NULL )
1191 /* We have an object specific method, use it */
1192 ret = GL_LABEL_OBJECT_GET_CLASS(object)->get_line_width (object);
1195 gl_debug (DEBUG_LABEL, "END");
1201 /****************************************************************************/
1202 /* Set shadow state of object. */
1203 /****************************************************************************/
1205 gl_label_object_set_shadow_state (glLabelObject *object,
1207 gboolean checkpoint)
1209 gl_debug (DEBUG_LABEL, "START");
1211 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1213 if (object->priv->shadow_state != state)
1217 gl_label_checkpoint (object->priv->parent, _("Shadow state"));
1220 object->priv->shadow_state = state;
1222 gl_label_object_emit_changed (object);
1225 gl_debug (DEBUG_LABEL, "END");
1229 /****************************************************************************/
1230 /* Get shadow state of object. */
1231 /****************************************************************************/
1233 gl_label_object_get_shadow_state (glLabelObject *object)
1235 gl_debug (DEBUG_LABEL, "");
1237 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
1239 return object->priv->shadow_state;
1243 /****************************************************************************/
1244 /* Set offset of object's shadow. */
1245 /****************************************************************************/
1247 gl_label_object_set_shadow_offset (glLabelObject *object,
1250 gboolean checkpoint)
1252 gl_debug (DEBUG_LABEL, "START");
1254 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1256 if ( (x != object->priv->shadow_x) || (y != object->priv->shadow_y) )
1260 gl_label_checkpoint (object->priv->parent, _("Shadow offset"));
1263 object->priv->shadow_x = x;
1264 object->priv->shadow_y = y;
1266 gl_label_object_emit_changed (object);
1269 gl_debug (DEBUG_LABEL, "END");
1273 /****************************************************************************/
1274 /* Get offset of object's shadow. */
1275 /****************************************************************************/
1277 gl_label_object_get_shadow_offset (glLabelObject *object,
1281 gl_debug (DEBUG_LABEL, "START");
1283 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1285 *x = object->priv->shadow_x;
1286 *y = object->priv->shadow_y;
1288 gl_debug (DEBUG_LABEL, "END");
1292 /****************************************************************************/
1293 /* Set color of object's shadow. */
1294 /****************************************************************************/
1296 gl_label_object_set_shadow_color (glLabelObject *object,
1297 glColorNode *color_node,
1298 gboolean checkpoint)
1300 gl_debug (DEBUG_LABEL, "START");
1302 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1304 if ( !gl_color_node_equal (object->priv->shadow_color_node, color_node ))
1308 gl_label_checkpoint (object->priv->parent, _("Shadow color"));
1311 gl_color_node_free (&(object->priv->shadow_color_node));
1312 object->priv->shadow_color_node = gl_color_node_dup (color_node);
1314 gl_label_object_emit_changed (object);
1317 gl_debug (DEBUG_LABEL, "END");
1321 /****************************************************************************/
1322 /* Get color of object's shadow. */
1323 /****************************************************************************/
1325 gl_label_object_get_shadow_color (glLabelObject *object)
1327 gl_debug (DEBUG_LABEL, "");
1329 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), NULL);
1331 return gl_color_node_dup (object->priv->shadow_color_node);
1335 /****************************************************************************/
1336 /* Set opacity of object's shadow. */
1337 /****************************************************************************/
1339 gl_label_object_set_shadow_opacity (glLabelObject *object,
1341 gboolean checkpoint)
1343 gl_debug (DEBUG_LABEL, "START");
1345 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1347 if (object->priv->shadow_opacity != alpha)
1351 gl_label_checkpoint (object->priv->parent, _("Shadow opacity"));
1354 object->priv->shadow_opacity = alpha;
1356 gl_label_object_emit_changed (object);
1359 gl_debug (DEBUG_LABEL, "END");
1363 /****************************************************************************/
1364 /* Get opacity of object's shadow. */
1365 /****************************************************************************/
1367 gl_label_object_get_shadow_opacity (glLabelObject *object)
1369 gl_debug (DEBUG_LABEL, "");
1371 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
1373 return object->priv->shadow_opacity;
1377 /****************************************************************************/
1378 /* Flip object horizontally. */
1379 /****************************************************************************/
1381 gl_label_object_flip_horiz (glLabelObject *object)
1383 cairo_matrix_t flip_matrix;
1385 gl_debug (DEBUG_LABEL, "START");
1387 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1389 cairo_matrix_init_scale (&flip_matrix, -1.0, 1.0);
1390 cairo_matrix_multiply (&object->priv->matrix, &object->priv->matrix, &flip_matrix);
1392 gl_debug (DEBUG_LABEL, "END");
1396 /****************************************************************************/
1397 /* Flip object vertically. */
1398 /****************************************************************************/
1400 gl_label_object_flip_vert (glLabelObject *object)
1402 cairo_matrix_t flip_matrix;
1404 gl_debug (DEBUG_LABEL, "START");
1406 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1408 cairo_matrix_init_scale (&flip_matrix, 1.0, -1.0);
1409 cairo_matrix_multiply (&object->priv->matrix, &object->priv->matrix, &flip_matrix);
1411 gl_debug (DEBUG_LABEL, "END");
1415 /****************************************************************************/
1416 /* Rotate object. */
1417 /****************************************************************************/
1419 gl_label_object_rotate (glLabelObject *object,
1422 cairo_matrix_t rotate_matrix;
1424 gl_debug (DEBUG_LABEL, "START");
1426 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1428 cairo_matrix_init_rotate (&rotate_matrix, theta_degs*(G_PI/180.));
1429 cairo_matrix_multiply (&object->priv->matrix, &object->priv->matrix, &rotate_matrix);
1431 gl_debug (DEBUG_LABEL, "END");
1435 /****************************************************************************/
1436 /* Set raw affine */
1437 /****************************************************************************/
1439 gl_label_object_set_matrix (glLabelObject *object,
1440 cairo_matrix_t *matrix)
1442 gl_debug (DEBUG_LABEL, "");
1444 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1446 object->priv->matrix = *matrix;
1450 /****************************************************************************/
1451 /* Get raw affine */
1452 /****************************************************************************/
1454 gl_label_object_get_matrix (glLabelObject *object,
1455 cairo_matrix_t *matrix)
1457 gl_debug (DEBUG_LABEL, "");
1459 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1461 *matrix = object->priv->matrix;
1465 /*****************************************************************************/
1467 /*****************************************************************************/
1469 gl_label_object_draw (glLabelObject *object,
1471 gboolean screen_flag,
1472 glMergeRecord *record)
1476 cairo_matrix_t matrix;
1477 gboolean shadow_state;
1478 gdouble shadow_x, shadow_y;
1480 gl_debug (DEBUG_LABEL, "START");
1482 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1484 gl_label_object_get_position (object, &x0, &y0);
1485 gl_label_object_get_matrix (object, &matrix);
1488 cairo_translate (cr, x0, y0);
1490 if ( GL_LABEL_OBJECT_GET_CLASS(object)->draw_shadow != NULL )
1492 shadow_state = gl_label_object_get_shadow_state (object);
1496 gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
1499 cairo_translate (cr, shadow_x, shadow_y);
1500 cairo_transform (cr, &matrix);
1502 GL_LABEL_OBJECT_GET_CLASS(object)->draw_shadow (object,
1511 if ( GL_LABEL_OBJECT_GET_CLASS(object)->draw_object != NULL )
1514 cairo_transform (cr, &matrix);
1516 GL_LABEL_OBJECT_GET_CLASS(object)->draw_object (object,
1526 gl_debug (DEBUG_LABEL, "END");
1530 /*****************************************************************************/
1531 /* Is object located at coordinates. */
1532 /*****************************************************************************/
1534 gl_label_object_is_located_at (glLabelObject *object,
1539 gboolean ret_val = FALSE;
1541 cairo_matrix_t matrix;
1544 gl_debug (DEBUG_LABEL, "START");
1546 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), FALSE);
1548 if ( GL_LABEL_OBJECT_GET_CLASS(object)->draw_object != NULL )
1551 gl_label_object_get_position (object, &x0, &y0);
1552 gl_label_object_get_matrix (object, &matrix);
1556 cairo_translate (cr, x0, y0);
1557 cairo_transform (cr, &matrix);
1561 cairo_device_to_user (cr, &x, &y);
1563 ret_val = GL_LABEL_OBJECT_GET_CLASS(object)->object_at (object, cr, x, y);
1568 gl_debug (DEBUG_LABEL, "END");
1574 /*****************************************************************************/
1575 /* Draw object handles */
1576 /*****************************************************************************/
1578 gl_label_object_draw_handles (glLabelObject *object,
1582 cairo_matrix_t matrix;
1584 gl_debug (DEBUG_LABEL, "START");
1586 g_return_if_fail (object && GL_IS_LABEL_OBJECT (object));
1588 if ( GL_LABEL_OBJECT_GET_CLASS(object)->draw_object != NULL )
1591 gl_label_object_get_position (object, &x0, &y0);
1592 gl_label_object_get_matrix (object, &matrix);
1596 cairo_translate (cr, x0, y0);
1597 cairo_transform (cr, &matrix);
1599 GL_LABEL_OBJECT_GET_CLASS(object)->draw_handles (object, cr);
1604 gl_debug (DEBUG_LABEL, "END");
1608 /*--------------------------------------------------------------------------*/
1609 /* Draw individual handle */
1610 /*--------------------------------------------------------------------------*/
1612 draw_handle (cairo_t *cr,
1613 glLabelObject *object,
1617 gdouble scale_x, scale_y;
1620 gl_debug (DEBUG_VIEW, "START");
1624 cairo_translate (cr, x_handle, y_handle);
1628 cairo_device_to_user_distance (cr, &scale_x, &scale_y);
1629 cairo_scale (cr, scale_x, scale_y);
1631 cairo_rectangle (cr,
1632 -HANDLE_PIXELS/2.0, -HANDLE_PIXELS/2.0,
1633 HANDLE_PIXELS, HANDLE_PIXELS);
1635 cairo_set_source_rgba (cr, HANDLE_FILL_RGBA_ARGS);
1636 cairo_fill_preserve (cr);
1638 cairo_set_line_width (cr, HANDLE_OUTLINE_WIDTH_PIXELS);
1639 cairo_set_source_rgba (cr, HANDLE_OUTLINE_RGBA_ARGS);
1644 gl_debug (DEBUG_VIEW, "END");
1648 /*--------------------------------------------------------------------------*/
1649 /* Create handle path */
1650 /*--------------------------------------------------------------------------*/
1652 create_handle_path (cairo_t *cr,
1653 glLabelObject *object,
1657 gdouble scale_x, scale_y;
1660 gl_debug (DEBUG_VIEW, "START");
1664 cairo_translate (cr, x_handle, y_handle);
1668 cairo_device_to_user_distance (cr, &scale_x, &scale_y);
1669 cairo_scale (cr, scale_x, scale_y);
1671 cairo_rectangle (cr,
1672 -HANDLE_PIXELS/2.0, -HANDLE_PIXELS/2.0,
1673 HANDLE_PIXELS, HANDLE_PIXELS);
1677 gl_debug (DEBUG_VIEW, "END");
1681 /*****************************************************************************/
1682 /* Draw box style handles. */
1683 /*****************************************************************************/
1685 gl_label_object_draw_handles_box (glLabelObject *object,
1690 gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
1693 draw_handle (cr, object, w/2, 0);
1696 draw_handle (cr, object, w, 0);
1699 draw_handle (cr, object, w, h/2);
1702 draw_handle (cr, object, w, h);
1705 draw_handle (cr, object, w/2, h);
1708 draw_handle (cr, object, 0, h);
1711 draw_handle (cr, object, 0, h/2);
1714 draw_handle (cr, object, 0, 0);
1718 /*****************************************************************************/
1719 /* Draw line style handles. */
1720 /*****************************************************************************/
1722 gl_label_object_draw_handles_line (glLabelObject *object,
1727 gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
1730 draw_handle (cr, object, w, h);
1733 draw_handle (cr, object, 0, 0);
1737 /*****************************************************************************/
1738 /* Get handle at given coordinates, if any. */
1739 /*****************************************************************************/
1741 gl_label_object_handle_at (glLabelObject *object,
1746 glLabelObjectHandle handle = GL_LABEL_OBJECT_HANDLE_NONE;
1748 cairo_matrix_t matrix;
1751 gl_debug (DEBUG_LABEL, "START");
1753 g_return_val_if_fail (object && GL_IS_LABEL_OBJECT (object), handle);
1755 if ( GL_LABEL_OBJECT_GET_CLASS(object)->draw_object != NULL )
1758 gl_label_object_get_position (object, &x0, &y0);
1759 gl_label_object_get_matrix (object, &matrix);
1763 cairo_translate (cr, x0, y0);
1764 cairo_transform (cr, &matrix);
1768 cairo_device_to_user (cr, &x, &y);
1770 handle = GL_LABEL_OBJECT_GET_CLASS(object)->handle_at (object, cr, x, y);
1775 gl_debug (DEBUG_LABEL, "END");
1781 /*****************************************************************************/
1782 /* Get handle at given coordinates for box style handles, if any. */
1783 /*****************************************************************************/
1785 gl_label_object_box_handle_at (glLabelObject *object,
1792 gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
1795 create_handle_path (cr, object, w, h);
1796 if (cairo_in_fill (cr, x, y))
1798 return GL_LABEL_OBJECT_HANDLE_SE;
1802 create_handle_path (cr, object, 0, h);
1803 if (cairo_in_fill (cr, x, y))
1805 return GL_LABEL_OBJECT_HANDLE_SW;
1809 create_handle_path (cr, object, w, 0);
1810 if (cairo_in_fill (cr, x, y))
1812 return GL_LABEL_OBJECT_HANDLE_NE;
1816 create_handle_path (cr, object, 0, 0);
1817 if (cairo_in_fill (cr, x, y))
1819 return GL_LABEL_OBJECT_HANDLE_NW;
1823 create_handle_path (cr, object, w, h/2);
1824 if (cairo_in_fill (cr, x, y))
1826 return GL_LABEL_OBJECT_HANDLE_E;
1830 create_handle_path (cr, object, w/2, h);
1831 if (cairo_in_fill (cr, x, y))
1833 return GL_LABEL_OBJECT_HANDLE_S;
1837 create_handle_path (cr, object, 0, h/2);
1838 if (cairo_in_fill (cr, x, y))
1840 return GL_LABEL_OBJECT_HANDLE_W;
1844 create_handle_path (cr, object, w/2, 0);
1845 if (cairo_in_fill (cr, x, y))
1847 return GL_LABEL_OBJECT_HANDLE_N;
1850 return GL_LABEL_OBJECT_HANDLE_NONE;
1854 /*****************************************************************************/
1855 /* Get handle at given coordinates for line style handles, if any. */
1856 /*****************************************************************************/
1858 gl_label_object_line_handle_at (glLabelObject *object,
1865 gl_label_object_get_size (GL_LABEL_OBJECT(object), &w, &h);
1868 create_handle_path (cr, object, w, h);
1869 if (cairo_in_fill (cr, x, y))
1871 return GL_LABEL_OBJECT_HANDLE_P2;
1875 create_handle_path (cr, object, 0, h);
1876 if (cairo_in_fill (cr, x, y))
1878 return GL_LABEL_OBJECT_HANDLE_P1;
1881 return GL_LABEL_OBJECT_HANDLE_NONE;
1888 * Local Variables: -- emacs
1890 * c-basic-offset: 8 -- emacs
1891 * tab-width: 8 -- emacs
1892 * indent-tabs-mode: nil -- emacs