git.sur5r.net Git - glabels/blob - glabels2/src/view-box.c

   1 /*
   2  *  view-box.c
   3  *  Copyright (C) 2001-2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   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.
  11  *
  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.
  16  *
  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/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "view-box.h"
  24
  25 #include <glib/gi18n.h>
  26 #include <glib.h>
  27
  28 #include "color.h"
  29 #include "object-editor.h"
  30 #include "stock.h"
  31
  32 #include "pixmaps/cursor_box.xbm"
  33 #include "pixmaps/cursor_box_mask.xbm"
  34
  35 #include "debug.h"
  36
  37
  38 /*========================================================*/
  39 /* Private macros and constants.                          */
  40 /*========================================================*/
  41
  42
  43 /*========================================================*/
  44 /* Private types.                                         */
  45 /*========================================================*/
  46
  47 struct _glViewBoxPrivate {
  48 };
  49
  50
  51 /*========================================================*/
  52 /* Private globals.                                       */
  53 /*========================================================*/
  54
  55
  56 /*========================================================*/
  57 /* Private function prototypes.                           */
  58 /*========================================================*/
  59
  60 static void       gl_view_box_finalize              (GObject          *object);
  61
  62 static GtkWidget *construct_properties_editor       (glViewObject     *view_object);
  63
  64 static void       update_object_from_editor_cb      (glObjectEditor   *editor,
  65                                                      glLabelObject    *object);
  66
  67 static void       update_editor_from_object_cb      (glLabelObject    *object,
  68                                                      glObjectEditor   *editor);
  69
  70 static void       update_editor_from_move_cb        (glLabelObject    *object,
  71                                                      gdouble           dx,
  72                                                      gdouble           dy,
  73                                                      glObjectEditor   *editor);
  74
  75 static gboolean   object_at                         (glViewObject     *view_object,
  76                                                      cairo_t          *cr,
  77                                                      gdouble           x,
  78                                                      gdouble           y);
  79
  80
  81 /*****************************************************************************/
  82 /* Boilerplate object stuff.                                                 */
  83 /*****************************************************************************/
  84 G_DEFINE_TYPE (glViewBox, gl_view_box, GL_TYPE_VIEW_OBJECT);
  85
  86
  87 static void
  88 gl_view_box_class_init (glViewBoxClass *class)
  89 {
  90         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  91         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
  92
  93         gl_debug (DEBUG_VIEW, "START");
  94
  95         gl_view_box_parent_class = g_type_class_peek_parent (class);
  96
  97         object_class->finalize = gl_view_box_finalize;
  98
  99         view_object_class->construct_editor = construct_properties_editor;
 100         view_object_class->object_at        = object_at;
 101
 102         gl_debug (DEBUG_VIEW, "END");
 103 }
 104
 105
 106 static void
 107 gl_view_box_init (glViewBox *view_box)
 108 {
 109         gl_debug (DEBUG_VIEW, "START");
 110
 111         view_box->priv = g_new0 (glViewBoxPrivate, 1);
 112
 113         gl_debug (DEBUG_VIEW, "END");
 114 }
 115
 116
 117 static void
 118 gl_view_box_finalize (GObject *object)
 119 {
 120         glViewBox *view_box = GL_VIEW_BOX (object);
 121
 122         gl_debug (DEBUG_VIEW, "START");
 123
 124         g_return_if_fail (object && GL_IS_VIEW_BOX (object));
 125
 126         g_free (view_box->priv);
 127
 128         G_OBJECT_CLASS (gl_view_box_parent_class)->finalize (object);
 129
 130         gl_debug (DEBUG_VIEW, "END");
 131 }
 132
 133
 134 /*****************************************************************************/
 135 /* NEW box object view.                                                      */
 136 /*****************************************************************************/
 137 glViewObject *
 138 gl_view_box_new (glLabelBox *object,
 139                  glView     *view)
 140 {
 141         glViewBox         *view_box;
 142
 143         gl_debug (DEBUG_VIEW, "START");
 144
 145         g_return_val_if_fail (object && GL_IS_LABEL_BOX (object), NULL);
 146         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 147
 148         view_box = g_object_new (gl_view_box_get_type(), NULL);
 149
 150         gl_view_object_set_object (GL_VIEW_OBJECT(view_box),
 151                                    GL_LABEL_OBJECT(object),
 152                                    GL_VIEW_OBJECT_HANDLES_BOX);
 153         gl_view_object_set_view (GL_VIEW_OBJECT(view_box), view);
 154
 155         gl_debug (DEBUG_VIEW, "END");
 156
 157         return GL_VIEW_OBJECT (view_box);
 158 }
 159
 160
 161 /*****************************************************************************/
 162 /* Create a properties dialog for a box object.                              */
 163 /*****************************************************************************/
 164 static GtkWidget *
 165 construct_properties_editor (glViewObject *view_object)
 166 {
 167         GtkWidget          *editor;
 168         glViewBox          *view_box = (glViewBox *)view_object;
 169         glLabelObject      *object;
 170
 171         gl_debug (DEBUG_VIEW, "START");
 172
 173         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_box));
 174
 175         /* Build editor. */
 176         editor = gl_object_editor_new (GL_STOCK_BOX, _("Box object properties"),
 177                                        object->parent,
 178                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 179                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 180                                        GL_OBJECT_EDITOR_SIZE_PAGE,
 181                                        GL_OBJECT_EDITOR_FILL_PAGE,
 182                                        GL_OBJECT_EDITOR_LINE_PAGE,
 183                                        0);
 184
 185         /* Update */
 186         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 187         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 188
 189         /* Connect signals. */
 190         g_signal_connect (G_OBJECT (editor), "changed",
 191                           G_CALLBACK(update_object_from_editor_cb), object);
 192         g_signal_connect (G_OBJECT (object), "changed",
 193                           G_CALLBACK (update_editor_from_object_cb), editor);
 194         g_signal_connect (G_OBJECT (object), "moved",
 195                           G_CALLBACK (update_editor_from_move_cb), editor);
 196
 197         gl_debug (DEBUG_VIEW, "END");
 198
 199         return editor;
 200 }
 201
 202
 203 /*---------------------------------------------------------------------------*/
 204 /* PRIVATE.  editor "changed" callback.                                      */
 205 /*---------------------------------------------------------------------------*/
 206 static void
 207 update_object_from_editor_cb (glObjectEditor *editor,
 208                               glLabelObject  *object)
 209 {
 210         gdouble            x, y, w, h;
 211         glColorNode       *line_color_node;
 212         gdouble            line_width;
 213         glColorNode       *fill_color_node;
 214         gboolean           shadow_state;
 215         gdouble            shadow_x, shadow_y;
 216         glColorNode       *shadow_color_node;
 217         gdouble            shadow_opacity;
 218
 219
 220         gl_debug (DEBUG_VIEW, "START");
 221
 222         g_signal_handlers_block_by_func (G_OBJECT(object),
 223                                          update_editor_from_object_cb,
 224                                          editor);
 225         g_signal_handlers_block_by_func (G_OBJECT(object),
 226                                          update_editor_from_move_cb,
 227                                          editor);
 228
 229         gl_object_editor_get_position (editor, &x, &y);
 230         gl_label_object_set_position (object, x, y);
 231
 232         gl_object_editor_get_size (editor, &w, &h);
 233         gl_label_object_set_size (object, w, h);
 234
 235         fill_color_node = gl_object_editor_get_fill_color (editor);
 236         gl_label_object_set_fill_color (object, fill_color_node);
 237         gl_color_node_free (&fill_color_node);
 238
 239         line_color_node = gl_object_editor_get_line_color (editor);
 240         gl_label_object_set_line_color (object, line_color_node);
 241         gl_color_node_free (&line_color_node);
 242
 243         line_width = gl_object_editor_get_line_width (editor);
 244         gl_label_object_set_line_width (object, line_width);
 245
 246         shadow_state = gl_object_editor_get_shadow_state (editor);
 247         gl_label_object_set_shadow_state (object, shadow_state);
 248
 249         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 250         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 251
 252         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 253         gl_label_object_set_shadow_color (object, shadow_color_node);
 254         gl_color_node_free (&shadow_color_node);
 255
 256         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 257         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 258
 259         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 260                                            update_editor_from_object_cb,
 261                                            editor);
 262         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 263                                            update_editor_from_move_cb,
 264                                            editor);
 265
 266         gl_debug (DEBUG_VIEW, "END");
 267 }
 268
 269
 270 /*---------------------------------------------------------------------------*/
 271 /* PRIVATE. label object "changed" callback.                                 */
 272 /*---------------------------------------------------------------------------*/
 273 static void
 274 update_editor_from_object_cb (glLabelObject  *object,
 275                               glObjectEditor *editor)
 276 {
 277         gdouble            w, h;
 278         glColorNode       *line_color_node;
 279         gdouble            line_width;
 280         glColorNode       *fill_color_node;
 281         gboolean           shadow_state;
 282         gdouble            shadow_x, shadow_y;
 283         glColorNode       *shadow_color_node;
 284         gdouble            shadow_opacity;
 285         glMerge           *merge;
 286
 287         gl_debug (DEBUG_VIEW, "START");
 288
 289         gl_label_object_get_size (object, &w, &h);
 290         gl_object_editor_set_size (editor, w, h);
 291         merge = gl_label_get_merge (GL_LABEL(object->parent));
 292
 293         fill_color_node = gl_label_object_get_fill_color (GL_LABEL_OBJECT(object));
 294         gl_object_editor_set_fill_color (editor, (merge != NULL), fill_color_node);
 295         gl_color_node_free (&fill_color_node);
 296
 297         line_color_node = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 298         gl_object_editor_set_line_color (editor, (merge != NULL), line_color_node);
 299         gl_color_node_free (&line_color_node);
 300
 301         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 302         gl_object_editor_set_line_width (editor, line_width);
 303
 304         shadow_state = gl_label_object_get_shadow_state (object);
 305         gl_object_editor_set_shadow_state (editor, shadow_state);
 306
 307         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 308         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 309
 310         shadow_color_node = gl_label_object_get_shadow_color (object);
 311         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 312         gl_color_node_free (&shadow_color_node);
 313
 314         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 315         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 316
 317         gl_debug (DEBUG_VIEW, "END");
 318 }
 319
 320
 321 /*---------------------------------------------------------------------------*/
 322 /* PRIVATE. label object "moved" callback.                                   */
 323 /*---------------------------------------------------------------------------*/
 324 static void
 325 update_editor_from_move_cb (glLabelObject    *object,
 326                             gdouble           dx,
 327                             gdouble           dy,
 328                             glObjectEditor   *editor)
 329 {
 330         gdouble            x, y;
 331
 332         gl_debug (DEBUG_VIEW, "START");
 333
 334         gl_label_object_get_position (object, &x, &y);
 335         gl_object_editor_set_position (editor, x, y);
 336
 337         gl_debug (DEBUG_VIEW, "END");
 338 }
 339
 340
 341 /*****************************************************************************/
 342 /* Is object at (x,y)?                                                       */
 343 /*****************************************************************************/
 344 static gboolean
 345 object_at (glViewObject  *view_object,
 346            cairo_t       *cr,
 347            gdouble        x,
 348            gdouble        y)
 349 {
 350         glLabelObject    *object;
 351         gdouble           w, h;
 352         gdouble           line_width;
 353
 354         object = gl_view_object_get_object (view_object);
 355
 356         gl_label_object_get_size (object, &w, &h);
 357
 358         cairo_rectangle (cr, 0.0, 0.0, w, h);
 359
 360         if (cairo_in_fill (cr, x, y))
 361         {
 362                 return TRUE;
 363         }
 364
 365         line_width = gl_label_object_get_line_width (object);
 366         cairo_set_line_width (cr, line_width);
 367         if (cairo_in_stroke (cr, x, y))
 368         {
 369                 return TRUE;
 370         }
 371
 372         return FALSE;
 373 }
 374
 375
 376 /*****************************************************************************/
 377 /* Return apropos cursor for create object mode.                             */
 378 /*****************************************************************************/
 379 GdkCursor *
 380 gl_view_box_get_create_cursor (void)
 381 {
 382         GdkCursor       *cursor = NULL;
 383         GdkPixmap       *pixmap_data, *pixmap_mask;
 384         GdkColor         fg = { 0, 0, 0, 0 };
 385         GdkColor         bg = { 0, 65535, 65535, 65535 };
 386
 387         gl_debug (DEBUG_VIEW, "START");
 388
 389         pixmap_data = gdk_bitmap_create_from_data (NULL,
 390                                                    (gchar *)cursor_box_bits,
 391                                                    cursor_box_width,
 392                                                    cursor_box_height);
 393         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 394                                                    (gchar *)cursor_box_mask_bits,
 395                                                    cursor_box_mask_width,
 396                                                    cursor_box_mask_height);
 397         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 398                                              &bg, cursor_box_x_hot,
 399                                              cursor_box_y_hot);
 400
 401         gl_debug (DEBUG_VIEW, "END");
 402
 403         return cursor;
 404 }
 405
 406
 407 /*****************************************************************************/
 408 /* Object creation handler: button press event.                              */
 409 /*****************************************************************************/
 410 void
 411 gl_view_box_create_button_press_event   (glView *view,
 412                                          gdouble x,
 413                                          gdouble y)
 414 {
 415         GObject             *object;
 416         glColorNode         *fill_color_node;
 417         glColorNode         *line_color_node;
 418
 419         gl_view_unselect_all (view);
 420
 421         fill_color_node = gl_color_node_new_default ();
 422         line_color_node = gl_color_node_new_default ();
 423
 424         object = gl_label_box_new (view->label);
 425         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 426         gl_label_object_set_size (GL_LABEL_OBJECT(object), 0.0, 0.0);
 427         line_color_node->color = gl_color_set_opacity (gl_view_get_default_line_color(view), 0.5);
 428         fill_color_node->color = gl_color_set_opacity (gl_view_get_default_fill_color(view), 0.5);
 429         gl_label_object_set_line_width (GL_LABEL_OBJECT(object),
 430                                         gl_view_get_default_line_width(view));
 431         gl_label_object_set_line_color (GL_LABEL_OBJECT(object),
 432                                         line_color_node);
 433         gl_label_object_set_fill_color (GL_LABEL_OBJECT(object),
 434                                         fill_color_node);
 435
 436         gl_color_node_free (&fill_color_node);
 437         gl_color_node_free (&line_color_node);
 438
 439         view->create_object = GL_LABEL_OBJECT (object);
 440         view->create_x0 = x;
 441         view->create_y0 = y;
 442 }
 443
 444
 445 /*****************************************************************************/
 446 /* Object creation handler: motion event.                                    */
 447 /*****************************************************************************/
 448 void
 449 gl_view_box_create_motion_event         (glView *view,
 450                                          gdouble x,
 451                                          gdouble y)
 452 {
 453         gdouble w, h;
 454
 455         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 456                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 457         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 458         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 459         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 460 }
 461
 462
 463 /*****************************************************************************/
 464 /* Object creation handler: button relesase event.                           */
 465 /*****************************************************************************/
 466 void
 467 gl_view_box_create_button_release_event (glView *view,
 468                                          gdouble x,
 469                                          gdouble y)
 470 {
 471         glColorNode         *fill_color_node;
 472         glColorNode         *line_color_node;
 473         gdouble              w, h;
 474
 475         fill_color_node = gl_color_node_new_default ();
 476         line_color_node = gl_color_node_new_default ();
 477
 478         if ((view->create_x0 == x) && (view->create_y0 == y)) {
 479                 x = view->create_x0 + 36.0;
 480                 y = view->create_y0 + 36.0;
 481         }
 482         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 483                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 484         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 485         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 486         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 487         line_color_node->color = gl_view_get_default_line_color(view);
 488         gl_label_object_set_line_color (GL_LABEL_OBJECT(view->create_object), line_color_node);
 489         fill_color_node->color = gl_view_get_default_fill_color(view);
 490         gl_label_object_set_fill_color (GL_LABEL_OBJECT(view->create_object), fill_color_node);
 491         gl_color_node_free (&fill_color_node);
 492         gl_color_node_free (&line_color_node);
 493 }
 494
 495
 496
 497 /*
 498  * Local Variables:       -- emacs
 499  * mode: C                -- emacs
 500  * c-basic-offset: 8      -- emacs
 501  * tab-width: 8           -- emacs
 502  * indent-tabs-mode: nil  -- emacs
 503  * End:                   -- emacs
 504  */