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

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
   2
   3 /*
   4  *  (GLABELS) Label and Business Card Creation program for GNOME
   5  *
   6  *  view_line.c:  GLabels label line object view
   7  *
   8  *  Copyright (C) 2001-2007  Jim Evins <evins@snaught.com>.
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  */
  24 #include <config.h>
  25
  26 #include "view-line.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <glib/gmem.h>
  30
  31 #include "color.h"
  32 #include "object-editor.h"
  33 #include "stock.h"
  34
  35 #include "pixmaps/cursor_line.xbm"
  36 #include "pixmaps/cursor_line_mask.xbm"
  37
  38 #include "debug.h"
  39
  40 /*========================================================*/
  41 /* Private macros and constants.                          */
  42 /*========================================================*/
  43
  44
  45 /*========================================================*/
  46 /* Private types.                                         */
  47 /*========================================================*/
  48
  49 struct _glViewLinePrivate {
  50 };
  51
  52 /*========================================================*/
  53 /* Private globals.                                       */
  54 /*========================================================*/
  55
  56
  57 /*========================================================*/
  58 /* Private function prototypes.                           */
  59 /*========================================================*/
  60
  61 static void       gl_view_line_finalize             (GObject          *object);
  62
  63 static GtkWidget *construct_properties_editor       (glViewObject     *view_object);
  64
  65 static void       update_object_from_editor_cb      (glObjectEditor   *editor,
  66                                                      glLabelObject    *object);
  67
  68 static void       update_editor_from_object_cb      (glLabelObject    *object,
  69                                                      glObjectEditor   *editor);
  70
  71 static void       update_editor_from_move_cb        (glLabelObject    *object,
  72                                                      gdouble           dx,
  73                                                      gdouble           dy,
  74                                                      glObjectEditor   *editor);
  75
  76 static void       update_editor_from_label_cb       (glLabel          *label,
  77                                                      glObjectEditor   *editor);
  78
  79 static gboolean   object_at                         (glViewObject     *view_object,
  80                                                      cairo_t          *cr,
  81                                                      gdouble           x,
  82                                                      gdouble           y);
  83
  84
  85 \f
  86 /*****************************************************************************/
  87 /* Boilerplate object stuff.                                                 */
  88 /*****************************************************************************/
  89 G_DEFINE_TYPE (glViewLine, gl_view_line, GL_TYPE_VIEW_OBJECT);
  90
  91
  92 static void
  93 gl_view_line_class_init (glViewLineClass *class)
  94 {
  95         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  96         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
  97
  98         gl_debug (DEBUG_VIEW, "START");
  99
 100         gl_view_line_parent_class = g_type_class_peek_parent (class);
 101
 102         object_class->finalize = gl_view_line_finalize;
 103
 104         view_object_class->construct_editor = construct_properties_editor;
 105         view_object_class->object_at        = object_at;
 106
 107         gl_debug (DEBUG_VIEW, "END");
 108 }
 109
 110 static void
 111 gl_view_line_init (glViewLine *view_line)
 112 {
 113         gl_debug (DEBUG_VIEW, "START");
 114
 115         view_line->priv = g_new0 (glViewLinePrivate, 1);
 116
 117         gl_debug (DEBUG_VIEW, "END");
 118 }
 119
 120 static void
 121 gl_view_line_finalize (GObject *object)
 122 {
 123         glViewLine *view_line = GL_VIEW_LINE (object);
 124
 125         gl_debug (DEBUG_VIEW, "START");
 126
 127         g_return_if_fail (object && GL_IS_VIEW_LINE (object));
 128
 129         g_free (view_line->priv);
 130
 131         G_OBJECT_CLASS (gl_view_line_parent_class)->finalize (object);
 132
 133         gl_debug (DEBUG_VIEW, "END");
 134 }
 135
 136 /*****************************************************************************/
 137 /* NEW line object view.                                                  */
 138 /*****************************************************************************/
 139 glViewObject *
 140 gl_view_line_new (glLabelLine *object,
 141                   glView     *view)
 142 {
 143         glViewLine         *view_line;
 144
 145         gl_debug (DEBUG_VIEW, "START");
 146
 147         g_return_val_if_fail (object && GL_IS_LABEL_LINE (object), NULL);
 148         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 149
 150         view_line = g_object_new (gl_view_line_get_type(), NULL);
 151
 152         gl_view_object_set_object (GL_VIEW_OBJECT(view_line),
 153                                    GL_LABEL_OBJECT(object),
 154                                    GL_VIEW_OBJECT_HANDLES_LINE);
 155         gl_view_object_set_view (GL_VIEW_OBJECT(view_line), view);
 156
 157         gl_debug (DEBUG_VIEW, "END");
 158
 159         return GL_VIEW_OBJECT (view_line);
 160 }
 161
 162 /*****************************************************************************/
 163 /* Create a properties dialog for a line object.                             */
 164 /*****************************************************************************/
 165 static GtkWidget *
 166 construct_properties_editor (glViewObject *view_object)
 167 {
 168         GtkWidget          *editor;
 169         glViewLine         *view_line = (glViewLine *)view_object;
 170         glLabelObject      *object;
 171
 172         gl_debug (DEBUG_VIEW, "START");
 173
 174         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_line));
 175
 176         /* Build editor. */
 177         editor = gl_object_editor_new (GL_STOCK_LINE, _("Line object properties"),
 178                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 179                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 180                                        GL_OBJECT_EDITOR_SIZE_LINE_PAGE,
 181                                        GL_OBJECT_EDITOR_LINE_PAGE,
 182                                        0);
 183
 184         /* Update */
 185         update_editor_from_label_cb (object->parent, GL_OBJECT_EDITOR(editor));
 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         g_signal_connect (G_OBJECT (object->parent), "size_changed",
 197                           G_CALLBACK (update_editor_from_label_cb), editor);
 198         g_signal_connect (G_OBJECT (object->parent), "merge_changed",
 199                           G_CALLBACK (update_editor_from_label_cb), editor);
 200
 201         gl_debug (DEBUG_VIEW, "END");
 202
 203         return editor;
 204 }
 205
 206 /*---------------------------------------------------------------------------*/
 207 /* PRIVATE.  editor "changed" callback.                                      */
 208 /*---------------------------------------------------------------------------*/
 209 static void
 210 update_object_from_editor_cb (glObjectEditor *editor,
 211                               glLabelObject  *object)
 212 {
 213         gdouble            x, y, w, h;
 214         glColorNode       *line_color_node;
 215         gdouble            line_width;
 216         gboolean           shadow_state;
 217         gdouble            shadow_x, shadow_y;
 218         glColorNode       *shadow_color_node;
 219         gdouble            shadow_opacity;
 220
 221
 222         gl_debug (DEBUG_VIEW, "START");
 223
 224         g_signal_handlers_block_by_func (G_OBJECT(object),
 225                                          update_editor_from_object_cb,
 226                                          editor);
 227         g_signal_handlers_block_by_func (G_OBJECT(object),
 228                                          update_editor_from_move_cb,
 229                                          editor);
 230
 231         gl_object_editor_get_position (editor, &x, &y);
 232         gl_label_object_set_position (object, x, y);
 233
 234         gl_object_editor_get_lsize (editor, &w, &h);
 235         gl_label_object_set_size (object, w, h);
 236
 237         line_color_node = gl_object_editor_get_line_color (editor);
 238         gl_label_object_set_line_color (object, line_color_node);
 239         gl_color_node_free (&line_color_node);
 240
 241         line_width = gl_object_editor_get_line_width (editor);
 242         gl_label_object_set_line_width (object, line_width);
 243
 244         shadow_state = gl_object_editor_get_shadow_state (editor);
 245         gl_label_object_set_shadow_state (object, shadow_state);
 246
 247         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 248         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 249
 250         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 251         gl_label_object_set_shadow_color (object, shadow_color_node);
 252         gl_color_node_free (&shadow_color_node);
 253
 254         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 255         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 256
 257         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 258                                            update_editor_from_object_cb,
 259                                            editor);
 260         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 261                                            update_editor_from_move_cb,
 262                                            editor);
 263
 264         gl_debug (DEBUG_VIEW, "END");
 265 }
 266
 267 /*---------------------------------------------------------------------------*/
 268 /* PRIVATE. label object "changed" callback.                                 */
 269 /*---------------------------------------------------------------------------*/
 270 static void
 271 update_editor_from_object_cb (glLabelObject  *object,
 272                               glObjectEditor *editor)
 273 {
 274         gdouble            w, h;
 275         glColorNode       *line_color_node;
 276         gdouble            line_width;
 277         gboolean           shadow_state;
 278         gdouble            shadow_x, shadow_y;
 279         glColorNode       *shadow_color_node;
 280         gdouble            shadow_opacity;
 281         glMerge           *merge;
 282
 283         gl_debug (DEBUG_VIEW, "START");
 284
 285         gl_label_object_get_size (object, &w, &h);
 286         gl_object_editor_set_lsize (editor, w, h);
 287         merge = gl_label_get_merge (GL_LABEL(object->parent));
 288
 289         line_color_node = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 290         gl_object_editor_set_line_color (editor, (merge != NULL), line_color_node);
 291         gl_color_node_free (&line_color_node);
 292
 293         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 294         gl_object_editor_set_line_width (editor, line_width);
 295
 296         shadow_state = gl_label_object_get_shadow_state (object);
 297         gl_object_editor_set_shadow_state (editor, shadow_state);
 298
 299         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 300         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 301
 302         shadow_color_node = gl_label_object_get_shadow_color (object);
 303         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 304         gl_color_node_free (&shadow_color_node);
 305
 306         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 307         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 308
 309         gl_debug (DEBUG_VIEW, "END");
 310 }
 311
 312 /*---------------------------------------------------------------------------*/
 313 /* PRIVATE. label object "moved" callback.                                   */
 314 /*---------------------------------------------------------------------------*/
 315 static void
 316 update_editor_from_move_cb (glLabelObject    *object,
 317                             gdouble           dx,
 318                             gdouble           dy,
 319                             glObjectEditor   *editor)
 320 {
 321         gdouble            x, y;
 322
 323         gl_debug (DEBUG_VIEW, "START");
 324
 325         gl_label_object_get_position (object, &x, &y);
 326         gl_object_editor_set_position (editor, x, y);
 327
 328         gl_debug (DEBUG_VIEW, "END");
 329 }
 330
 331 /*---------------------------------------------------------------------------*/
 332 /* PRIVATE. label "changed" callback.                                        */
 333 /*---------------------------------------------------------------------------*/
 334 static void
 335 update_editor_from_label_cb (glLabel        *label,
 336                              glObjectEditor *editor)
 337 {
 338         gdouble            label_width, label_height;
 339         glMerge                    *merge;
 340
 341         gl_debug (DEBUG_VIEW, "START");
 342
 343         gl_label_get_size (label, &label_width, &label_height);
 344         gl_object_editor_set_max_position (GL_OBJECT_EDITOR (editor),
 345                                            label_width, label_height);
 346         gl_object_editor_set_max_lsize (GL_OBJECT_EDITOR (editor),
 347                                         label_width, label_height);
 348         gl_object_editor_set_max_shadow_offset (GL_OBJECT_EDITOR (editor),
 349                                                 label_width, label_height);
 350
 351         merge = gl_label_get_merge (label);
 352         gl_object_editor_set_key_names (editor, merge);
 353
 354         gl_debug (DEBUG_VIEW, "END");
 355 }
 356
 357 /*****************************************************************************/
 358 /* Is object at (x,y)?                                                       */
 359 /*****************************************************************************/
 360 static gboolean
 361 object_at (glViewObject  *view_object,
 362            cairo_t       *cr,
 363            gdouble        x,
 364            gdouble        y)
 365 {
 366         glLabelObject    *object;
 367         gdouble           w, h;
 368         gdouble           line_width;
 369
 370         object = gl_view_object_get_object (view_object);
 371
 372         gl_label_object_get_size (object, &w, &h);
 373
 374         cairo_move_to (cr, 0.0, 0.0);
 375         cairo_line_to (cr, w, h);
 376
 377         line_width = gl_label_object_get_line_width (object);
 378         cairo_set_line_width (cr, line_width);
 379         if (cairo_in_stroke (cr, x, y))
 380         {
 381                 return TRUE;
 382         }
 383
 384         return FALSE;
 385 }
 386
 387
 388 /*****************************************************************************/
 389 /* Return apropos cursor for create object mode.                             */
 390 /*****************************************************************************/
 391 GdkCursor *
 392 gl_view_line_get_create_cursor (void)
 393 {
 394         GdkCursor       *cursor = NULL;
 395         GdkPixmap       *pixmap_data, *pixmap_mask;
 396         GdkColor         fg = { 0, 0, 0, 0 };
 397         GdkColor         bg = { 0, 65535, 65535, 65535 };
 398
 399         gl_debug (DEBUG_VIEW, "START");
 400
 401         pixmap_data = gdk_bitmap_create_from_data (NULL,
 402                                                    (gchar *)cursor_line_bits,
 403                                                    cursor_line_width,
 404                                                    cursor_line_height);
 405         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 406                                                    (gchar *)cursor_line_mask_bits,
 407                                                    cursor_line_mask_width,
 408                                                    cursor_line_mask_height);
 409         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 410                                              &bg, cursor_line_x_hot,
 411                                              cursor_line_y_hot);
 412
 413         gl_debug (DEBUG_VIEW, "END");
 414
 415         return cursor;
 416 }
 417
 418 /*****************************************************************************/
 419 /* Object creation handler: button press event.                              */
 420 /*****************************************************************************/
 421 void
 422 gl_view_line_create_button_press_event   (glView *view,
 423                                           gdouble x,
 424                                           gdouble y)
 425 {
 426         GObject             *object;
 427         glColorNode         *line_color_node;
 428
 429         gl_view_unselect_all (view);
 430
 431         line_color_node = gl_color_node_new_default ();
 432
 433         object = gl_label_line_new (view->label);
 434         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 435         gl_label_object_set_size (GL_LABEL_OBJECT(object), 0.0, 0.0);
 436         line_color_node->color = gl_color_set_opacity (gl_view_get_default_line_color(view), 0.5);
 437         gl_label_object_set_line_width (GL_LABEL_OBJECT(object),
 438                                         gl_view_get_default_line_width(view));
 439         gl_label_object_set_line_color (GL_LABEL_OBJECT(object),
 440                                         line_color_node);
 441
 442         gl_color_node_free (&line_color_node);
 443
 444         view->create_object = GL_LABEL_OBJECT (object);
 445         view->create_x0 = x;
 446         view->create_y0 = y;
 447 }
 448
 449 /*****************************************************************************/
 450 /* Object creation handler: motion event.                                    */
 451 /*****************************************************************************/
 452 void
 453 gl_view_line_create_motion_event     (glView *view,
 454                                       gdouble x,
 455                                       gdouble y)
 456 {
 457         gdouble w, h;
 458
 459         w = x - view->create_x0;
 460         h = y - view->create_y0;
 461         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 462 }
 463
 464 /*****************************************************************************/
 465 /* Object creation handler: button relesase event.                           */
 466 /*****************************************************************************/
 467 void
 468 gl_view_line_create_button_release_event (glView *view,
 469                                           gdouble x,
 470                                           gdouble y)
 471 {
 472         glColorNode         *line_color_node;
 473         gdouble              w, h;
 474
 475         line_color_node = gl_color_node_new_default ();
 476
 477         if ((view->create_x0 == x) && (view->create_y0 == y)) {
 478                 x = view->create_x0 + 36.0;
 479                 y = view->create_y0 + 36.0;
 480         }
 481         w = x - view->create_x0;
 482         h = y - view->create_y0;
 483         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 484         line_color_node->color = gl_view_get_default_line_color(view);
 485         gl_label_object_set_line_color (GL_LABEL_OBJECT(view->create_object), line_color_node);
 486         gl_color_node_free (&line_color_node);
 487 }
 488