git.sur5r.net Git - glabels/blob - glabels2/src/view-ellipse.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_ellipse.c:  GLabels label ellipse 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-ellipse.h"
  27
  28 #include <glib/gi18n.h>
  29 #include <glib/gmem.h>
  30 #include <math.h>
  31
  32 #include "cairo-ellipse-path.h"
  33 #include "color.h"
  34 #include "object-editor.h"
  35 #include "stock.h"
  36
  37 #include "pixmaps/cursor_ellipse.xbm"
  38 #include "pixmaps/cursor_ellipse_mask.xbm"
  39
  40 #include "debug.h"
  41
  42 /*========================================================*/
  43 /* Private macros and constants.                          */
  44 /*========================================================*/
  45
  46 /*========================================================*/
  47 /* Private types.                                         */
  48 /*========================================================*/
  49
  50 struct _glViewEllipsePrivate {
  51 };
  52
  53 /*========================================================*/
  54 /* Private globals.                                       */
  55 /*========================================================*/
  56
  57
  58 /*========================================================*/
  59 /* Private function prototypes.                           */
  60 /*========================================================*/
  61
  62 static void       gl_view_ellipse_finalize          (GObject          *object);
  63
  64 static GtkWidget *construct_properties_editor       (glViewObject     *view_object);
  65
  66 static void       update_object_from_editor_cb      (glObjectEditor   *editor,
  67                                                      glLabelObject    *object);
  68
  69 static void       update_editor_from_object_cb      (glLabelObject    *object,
  70                                                      glObjectEditor   *editor);
  71
  72 static void       update_editor_from_move_cb        (glLabelObject    *object,
  73                                                      gdouble           dx,
  74                                                      gdouble           dy,
  75                                                      glObjectEditor   *editor);
  76
  77 static void       update_editor_from_label_cb       (glLabel          *label,
  78                                                      glObjectEditor   *editor);
  79
  80 static gboolean   object_at                         (glViewObject     *view_object,
  81                                                      cairo_t          *cr,
  82                                                      gdouble           x,
  83                                                      gdouble           y);
  84
  85
  86 \f
  87 /*****************************************************************************/
  88 /* Boilerplate object stuff.                                                 */
  89 /*****************************************************************************/
  90 G_DEFINE_TYPE (glViewEllipse, gl_view_ellipse, GL_TYPE_VIEW_OBJECT);
  91
  92
  93 static void
  94 gl_view_ellipse_class_init (glViewEllipseClass *class)
  95 {
  96         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  97         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
  98
  99         gl_debug (DEBUG_VIEW, "START");
 100
 101         gl_view_ellipse_parent_class = g_type_class_peek_parent (class);
 102
 103         object_class->finalize = gl_view_ellipse_finalize;
 104
 105         view_object_class->construct_editor = construct_properties_editor;
 106         view_object_class->object_at        = object_at;
 107
 108         gl_debug (DEBUG_VIEW, "END");
 109 }
 110
 111 static void
 112 gl_view_ellipse_init (glViewEllipse *view_ellipse)
 113 {
 114         gl_debug (DEBUG_VIEW, "START");
 115
 116         view_ellipse->priv = g_new0 (glViewEllipsePrivate, 1);
 117
 118         gl_debug (DEBUG_VIEW, "END");
 119 }
 120
 121 static void
 122 gl_view_ellipse_finalize (GObject *object)
 123 {
 124         glViewEllipse *view_ellipse = GL_VIEW_ELLIPSE (object);
 125
 126         gl_debug (DEBUG_VIEW, "START");
 127
 128         g_return_if_fail (object && GL_IS_VIEW_ELLIPSE (object));
 129
 130         g_free (view_ellipse->priv);
 131
 132         G_OBJECT_CLASS (gl_view_ellipse_parent_class)->finalize (object);
 133
 134         gl_debug (DEBUG_VIEW, "END");
 135 }
 136
 137 /*****************************************************************************/
 138 /* NEW ellipse object view.                                                  */
 139 /*****************************************************************************/
 140 glViewObject *
 141 gl_view_ellipse_new (glLabelEllipse *object,
 142                      glView         *view)
 143 {
 144         glViewEllipse         *view_ellipse;
 145
 146         gl_debug (DEBUG_VIEW, "START");
 147
 148         g_return_val_if_fail (object && GL_IS_LABEL_ELLIPSE (object), NULL);
 149         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 150
 151         view_ellipse = g_object_new (gl_view_ellipse_get_type(), NULL);
 152
 153         gl_view_object_set_object (GL_VIEW_OBJECT(view_ellipse),
 154                                    GL_LABEL_OBJECT(object),
 155                                    GL_VIEW_OBJECT_HANDLES_BOX);
 156         gl_view_object_set_view (GL_VIEW_OBJECT(view_ellipse), view);
 157
 158         gl_debug (DEBUG_VIEW, "END");
 159
 160         return GL_VIEW_OBJECT (view_ellipse);
 161 }
 162
 163 /*****************************************************************************/
 164 /* Create a properties dialog for a ellipse object.                          */
 165 /*****************************************************************************/
 166 static GtkWidget *
 167 construct_properties_editor (glViewObject *view_object)
 168 {
 169         GtkWidget          *editor;
 170         glViewEllipse      *view_ellipse = (glViewEllipse *)view_object;
 171         glLabelObject      *object;
 172
 173         gl_debug (DEBUG_VIEW, "START");
 174
 175         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_ellipse));
 176
 177         /* Build editor. */
 178         editor = gl_object_editor_new (GL_STOCK_ELLIPSE, _("Ellipse object properties"),
 179                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 180                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 181                                        GL_OBJECT_EDITOR_SIZE_PAGE,
 182                                        GL_OBJECT_EDITOR_FILL_PAGE,
 183                                        GL_OBJECT_EDITOR_LINE_PAGE,
 184                                        0);
 185
 186         /* Update */
 187         update_editor_from_label_cb (object->parent, GL_OBJECT_EDITOR(editor));
 188         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 189         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 190
 191         /* Connect signals. */
 192         g_signal_connect (G_OBJECT (editor), "changed",
 193                           G_CALLBACK(update_object_from_editor_cb), object);
 194         g_signal_connect (G_OBJECT (object), "changed",
 195                           G_CALLBACK (update_editor_from_object_cb), editor);
 196         g_signal_connect (G_OBJECT (object), "moved",
 197                           G_CALLBACK (update_editor_from_move_cb), editor);
 198         g_signal_connect (G_OBJECT (object->parent), "size_changed",
 199                           G_CALLBACK (update_editor_from_label_cb), editor);
 200         g_signal_connect (G_OBJECT (object->parent), "merge_changed",
 201                           G_CALLBACK (update_editor_from_label_cb), editor);
 202
 203         gl_debug (DEBUG_VIEW, "END");
 204
 205         return editor;
 206 }
 207
 208 /*---------------------------------------------------------------------------*/
 209 /* PRIVATE.  editor "changed" callback.                                      */
 210 /*---------------------------------------------------------------------------*/
 211 static void
 212 update_object_from_editor_cb (glObjectEditor *editor,
 213                               glLabelObject  *object)
 214 {
 215         gdouble            x, y, w, h;
 216         glColorNode       *line_color_node;
 217         gdouble            line_width;
 218         glColorNode       *fill_color_node;
 219         gboolean           shadow_state;
 220         gdouble            shadow_x, shadow_y;
 221         glColorNode       *shadow_color_node;
 222         gdouble            shadow_opacity;
 223
 224
 225         gl_debug (DEBUG_VIEW, "START");
 226
 227         g_signal_handlers_block_by_func (G_OBJECT(object),
 228                                          update_editor_from_object_cb,
 229                                          editor);
 230         g_signal_handlers_block_by_func (G_OBJECT(object),
 231                                          update_editor_from_move_cb,
 232                                          editor);
 233
 234         gl_object_editor_get_position (editor, &x, &y);
 235         gl_label_object_set_position (object, x, y);
 236
 237         gl_object_editor_get_size (editor, &w, &h);
 238         gl_label_object_set_size (object, w, h);
 239
 240         fill_color_node = gl_object_editor_get_fill_color (editor);
 241         gl_label_object_set_fill_color (object, fill_color_node);
 242         gl_color_node_free (&fill_color_node);
 243
 244         line_color_node = gl_object_editor_get_line_color (editor);
 245         gl_label_object_set_line_color (object, line_color_node);
 246         gl_color_node_free (&line_color_node);
 247
 248         line_width = gl_object_editor_get_line_width (editor);
 249         gl_label_object_set_line_width (object, line_width);
 250
 251         shadow_state = gl_object_editor_get_shadow_state (editor);
 252         gl_label_object_set_shadow_state (object, shadow_state);
 253
 254         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 255         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 256
 257         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 258         gl_label_object_set_shadow_color (object, shadow_color_node);
 259         gl_color_node_free (&shadow_color_node);
 260
 261         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 262         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 263
 264         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 265                                            update_editor_from_object_cb,
 266                                            editor);
 267         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 268                                            update_editor_from_move_cb,
 269                                            editor);
 270
 271         gl_debug (DEBUG_VIEW, "END");
 272 }
 273
 274 /*---------------------------------------------------------------------------*/
 275 /* PRIVATE. label object "changed" callback.                                 */
 276 /*---------------------------------------------------------------------------*/
 277 static void
 278 update_editor_from_object_cb (glLabelObject  *object,
 279                               glObjectEditor *editor)
 280 {
 281         gdouble            w, h;
 282         glColorNode       *line_color_node;
 283         gdouble            line_width;
 284         glColorNode       *fill_color_node;
 285         gboolean           shadow_state;
 286         gdouble            shadow_x, shadow_y;
 287         glColorNode       *shadow_color_node;
 288         gdouble            shadow_opacity;
 289         glMerge           *merge;
 290
 291         gl_debug (DEBUG_VIEW, "START");
 292
 293         gl_label_object_get_size (object, &w, &h);
 294         gl_object_editor_set_size (editor, w, h);
 295         merge = gl_label_get_merge (GL_LABEL(object->parent));
 296
 297         fill_color_node = gl_label_object_get_fill_color (GL_LABEL_OBJECT(object));
 298         gl_object_editor_set_fill_color (editor, (merge != NULL), fill_color_node);
 299         gl_color_node_free (&fill_color_node);
 300
 301         line_color_node = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 302         gl_object_editor_set_line_color (editor, (merge != NULL), line_color_node);
 303         gl_color_node_free (&line_color_node);
 304
 305         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 306         gl_object_editor_set_line_width (editor, line_width);
 307
 308         shadow_state = gl_label_object_get_shadow_state (object);
 309         gl_object_editor_set_shadow_state (editor, shadow_state);
 310
 311         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 312         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 313
 314         shadow_color_node = gl_label_object_get_shadow_color (object);
 315         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 316         gl_color_node_free (&shadow_color_node);
 317
 318         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 319         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 320
 321         gl_debug (DEBUG_VIEW, "END");
 322 }
 323
 324 /*---------------------------------------------------------------------------*/
 325 /* PRIVATE. label object "moved" callback.                                   */
 326 /*---------------------------------------------------------------------------*/
 327 static void
 328 update_editor_from_move_cb (glLabelObject    *object,
 329                             gdouble           dx,
 330                             gdouble           dy,
 331                             glObjectEditor   *editor)
 332 {
 333         gdouble            x, y;
 334
 335         gl_debug (DEBUG_VIEW, "START");
 336
 337         gl_label_object_get_position (object, &x, &y);
 338         gl_object_editor_set_position (editor, x, y);
 339
 340         gl_debug (DEBUG_VIEW, "END");
 341 }
 342
 343 /*---------------------------------------------------------------------------*/
 344 /* PRIVATE. label "changed" callback.                                        */
 345 /*---------------------------------------------------------------------------*/
 346 static void
 347 update_editor_from_label_cb (glLabel        *label,
 348                              glObjectEditor *editor)
 349 {
 350         gdouble            label_width, label_height;
 351         glMerge                    *merge;
 352
 353         gl_debug (DEBUG_VIEW, "START");
 354
 355         gl_label_get_size (label, &label_width, &label_height);
 356         gl_object_editor_set_max_position (GL_OBJECT_EDITOR (editor),
 357                                            label_width, label_height);
 358         gl_object_editor_set_max_size (GL_OBJECT_EDITOR (editor),
 359                                        label_width, label_height);
 360         gl_object_editor_set_max_shadow_offset (GL_OBJECT_EDITOR (editor),
 361                                                 label_width, label_height);
 362
 363         merge = gl_label_get_merge (label);
 364         gl_object_editor_set_key_names (editor, merge);
 365
 366         gl_debug (DEBUG_VIEW, "END");
 367 }
 368
 369 /*****************************************************************************/
 370 /* Is object at (x,y)?                                                       */
 371 /*****************************************************************************/
 372 static gboolean
 373 object_at (glViewObject  *view_object,
 374            cairo_t       *cr,
 375            gdouble        x,
 376            gdouble        y)
 377 {
 378         glLabelObject    *object;
 379         gdouble           w, h;
 380         gdouble           line_width;
 381
 382         object = gl_view_object_get_object (view_object);
 383
 384         gl_label_object_get_size (object, &w, &h);
 385
 386         gl_cairo_ellipse_path (cr, w/2, h/2);
 387
 388         if (cairo_in_fill (cr, x, y))
 389         {
 390                 return TRUE;
 391         }
 392
 393         line_width = gl_label_object_get_line_width (object);
 394         cairo_set_line_width (cr, line_width);
 395         if (cairo_in_stroke (cr, x, y))
 396         {
 397                 return TRUE;
 398         }
 399
 400         return FALSE;
 401 }
 402
 403
 404 /*****************************************************************************/
 405 /* Return apropos cursor for create object mode.                             */
 406 /*****************************************************************************/
 407 GdkCursor *
 408 gl_view_ellipse_get_create_cursor (void)
 409 {
 410         GdkCursor       *cursor = NULL;
 411         GdkPixmap       *pixmap_data, *pixmap_mask;
 412         GdkColor         fg = { 0, 0, 0, 0 };
 413         GdkColor         bg = { 0, 65535, 65535, 65535 };
 414
 415         gl_debug (DEBUG_VIEW, "START");
 416
 417         pixmap_data = gdk_bitmap_create_from_data (NULL,
 418                                                    (gchar *)cursor_ellipse_bits,
 419                                                    cursor_ellipse_width,
 420                                                    cursor_ellipse_height);
 421         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 422                                                    (gchar *)cursor_ellipse_mask_bits,
 423                                                    cursor_ellipse_mask_width,
 424                                                    cursor_ellipse_mask_height);
 425         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 426                                              &bg, cursor_ellipse_x_hot,
 427                                              cursor_ellipse_y_hot);
 428
 429         gl_debug (DEBUG_VIEW, "END");
 430
 431         return cursor;
 432 }
 433
 434 /*****************************************************************************/
 435 /* Object creation handler: button press event.                              */
 436 /*****************************************************************************/
 437 void
 438 gl_view_ellipse_create_button_press_event   (glView *view,
 439                                              gdouble x,
 440                                              gdouble y)
 441 {
 442         GObject             *object;
 443         glColorNode         *fill_color_node;
 444         glColorNode         *line_color_node;
 445
 446         gl_view_unselect_all (view);
 447
 448         fill_color_node = gl_color_node_new_default ();
 449         line_color_node = gl_color_node_new_default ();
 450
 451         object = gl_label_ellipse_new (view->label);
 452         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 453         gl_label_object_set_size (GL_LABEL_OBJECT(object), 0.0, 0.0);
 454         line_color_node->color = gl_color_set_opacity (gl_view_get_default_line_color(view), 0.5);
 455         fill_color_node->color = gl_color_set_opacity (gl_view_get_default_fill_color(view), 0.5);
 456         gl_label_object_set_line_width (GL_LABEL_OBJECT(object),
 457                                         gl_view_get_default_line_width(view));
 458         gl_label_object_set_line_color (GL_LABEL_OBJECT(object),
 459                                         line_color_node);
 460         gl_label_object_set_fill_color (GL_LABEL_OBJECT(object),
 461                                         fill_color_node);
 462
 463         gl_color_node_free (&fill_color_node);
 464         gl_color_node_free (&line_color_node);
 465
 466         view->create_object = GL_LABEL_OBJECT (object);
 467         view->create_x0 = x;
 468         view->create_y0 = y;
 469 }
 470
 471 /*****************************************************************************/
 472 /* Object creation handler: motion event.                                    */
 473 /*****************************************************************************/
 474 void
 475 gl_view_ellipse_create_motion_event     (glView *view,
 476                                          gdouble x,
 477                                          gdouble y)
 478 {
 479         gdouble w, h;
 480
 481         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 482                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 483         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 484         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 485         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 486 }
 487
 488 /*****************************************************************************/
 489 /* Object creation handler: button relesase event.                           */
 490 /*****************************************************************************/
 491 void
 492 gl_view_ellipse_create_button_release_event (glView *view,
 493                                              gdouble x,
 494                                              gdouble y)
 495 {
 496         glColorNode         *fill_color_node;
 497         glColorNode         *line_color_node;
 498         gdouble              w, h;
 499
 500         fill_color_node = gl_color_node_new_default ();
 501         line_color_node = gl_color_node_new_default ();
 502
 503         if ((view->create_x0 == x) && (view->create_y0 == y)) {
 504                 x = view->create_x0 + 36.0;
 505                 y = view->create_y0 + 36.0;
 506         }
 507         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 508                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 509         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 510         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 511         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 512         line_color_node->color = gl_view_get_default_line_color(view);
 513         gl_label_object_set_line_color (GL_LABEL_OBJECT(view->create_object), line_color_node);
 514         fill_color_node->color = gl_view_get_default_fill_color(view);
 515         gl_label_object_set_fill_color (GL_LABEL_OBJECT(view->create_object), fill_color_node);
 516         gl_color_node_free (&fill_color_node);
 517         gl_color_node_free (&line_color_node);
 518 }
 519