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