git.sur5r.net Git - glabels/blob - 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         int place_holder; /* Place holder for future private data. */
  51 };
  52
  53 /*========================================================*/
  54 /* Private globals.                                       */
  55 /*========================================================*/
  56
  57
  58 /*========================================================*/
  59 /* Private function prototypes.                           */
  60 /*========================================================*/
  61
  62 static void       gl_view_line_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 gboolean   object_at                         (glViewObject     *view_object,
  78                                                      cairo_t          *cr,
  79                                                      gdouble           x,
  80                                                      gdouble           y);
  81
  82
  83 \f
  84 /*****************************************************************************/
  85 /* Boilerplate object stuff.                                                 */
  86 /*****************************************************************************/
  87 G_DEFINE_TYPE (glViewLine, gl_view_line, GL_TYPE_VIEW_OBJECT);
  88
  89
  90 static void
  91 gl_view_line_class_init (glViewLineClass *class)
  92 {
  93         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  94         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
  95
  96         gl_debug (DEBUG_VIEW, "START");
  97
  98         gl_view_line_parent_class = g_type_class_peek_parent (class);
  99
 100         object_class->finalize = gl_view_line_finalize;
 101
 102         view_object_class->construct_editor = construct_properties_editor;
 103         view_object_class->object_at        = object_at;
 104
 105         gl_debug (DEBUG_VIEW, "END");
 106 }
 107
 108 static void
 109 gl_view_line_init (glViewLine *view_line)
 110 {
 111         gl_debug (DEBUG_VIEW, "START");
 112
 113         view_line->priv = g_new0 (glViewLinePrivate, 1);
 114
 115         gl_debug (DEBUG_VIEW, "END");
 116 }
 117
 118 static void
 119 gl_view_line_finalize (GObject *object)
 120 {
 121         glViewLine *view_line = GL_VIEW_LINE (object);
 122
 123         gl_debug (DEBUG_VIEW, "START");
 124
 125         g_return_if_fail (object && GL_IS_VIEW_LINE (object));
 126
 127         g_free (view_line->priv);
 128
 129         G_OBJECT_CLASS (gl_view_line_parent_class)->finalize (object);
 130
 131         gl_debug (DEBUG_VIEW, "END");
 132 }
 133
 134 /*****************************************************************************/
 135 /* NEW line object view.                                                  */
 136 /*****************************************************************************/
 137 glViewObject *
 138 gl_view_line_new (glLabelLine *object,
 139                   glView     *view)
 140 {
 141         glViewLine         *view_line;
 142
 143         gl_debug (DEBUG_VIEW, "START");
 144
 145         g_return_val_if_fail (object && GL_IS_LABEL_LINE (object), NULL);
 146         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 147
 148         view_line = g_object_new (gl_view_line_get_type(), NULL);
 149
 150         gl_view_object_set_object (GL_VIEW_OBJECT(view_line),
 151                                    GL_LABEL_OBJECT(object),
 152                                    GL_VIEW_OBJECT_HANDLES_LINE);
 153         gl_view_object_set_view (GL_VIEW_OBJECT(view_line), view);
 154
 155         gl_debug (DEBUG_VIEW, "END");
 156
 157         return GL_VIEW_OBJECT (view_line);
 158 }
 159
 160 /*****************************************************************************/
 161 /* Create a properties dialog for a line object.                             */
 162 /*****************************************************************************/
 163 static GtkWidget *
 164 construct_properties_editor (glViewObject *view_object)
 165 {
 166         GtkWidget          *editor;
 167         glViewLine         *view_line = (glViewLine *)view_object;
 168         glLabelObject      *object;
 169
 170         gl_debug (DEBUG_VIEW, "START");
 171
 172         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_line));
 173
 174         /* Build editor. */
 175         editor = gl_object_editor_new (GL_STOCK_LINE, _("Line object properties"),
 176                                        object->parent,
 177                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 178                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 179                                        GL_OBJECT_EDITOR_SIZE_LINE_PAGE,
 180                                        GL_OBJECT_EDITOR_LINE_PAGE,
 181                                        0);
 182
 183         /* Update */
 184         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 185         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 186
 187         /* Connect signals. */
 188         g_signal_connect (G_OBJECT (editor), "changed",
 189                           G_CALLBACK(update_object_from_editor_cb), object);
 190         g_signal_connect (G_OBJECT (object), "changed",
 191                           G_CALLBACK (update_editor_from_object_cb), editor);
 192         g_signal_connect (G_OBJECT (object), "moved",
 193                           G_CALLBACK (update_editor_from_move_cb), editor);
 194
 195         gl_debug (DEBUG_VIEW, "END");
 196
 197         return editor;
 198 }
 199
 200 /*---------------------------------------------------------------------------*/
 201 /* PRIVATE.  editor "changed" callback.                                      */
 202 /*---------------------------------------------------------------------------*/
 203 static void
 204 update_object_from_editor_cb (glObjectEditor *editor,
 205                               glLabelObject  *object)
 206 {
 207         gdouble            x, y, w, h;
 208         glColorNode       *line_color_node;
 209         gdouble            line_width;
 210         gboolean           shadow_state;
 211         gdouble            shadow_x, shadow_y;
 212         glColorNode       *shadow_color_node;
 213         gdouble            shadow_opacity;
 214
 215
 216         gl_debug (DEBUG_VIEW, "START");
 217
 218         g_signal_handlers_block_by_func (G_OBJECT(object),
 219                                          update_editor_from_object_cb,
 220                                          editor);
 221         g_signal_handlers_block_by_func (G_OBJECT(object),
 222                                          update_editor_from_move_cb,
 223                                          editor);
 224
 225         gl_object_editor_get_position (editor, &x, &y);
 226         gl_label_object_set_position (object, x, y);
 227
 228         gl_object_editor_get_lsize (editor, &w, &h);
 229         gl_label_object_set_size (object, w, h);
 230
 231         line_color_node = gl_object_editor_get_line_color (editor);
 232         gl_label_object_set_line_color (object, line_color_node);
 233         gl_color_node_free (&line_color_node);
 234
 235         line_width = gl_object_editor_get_line_width (editor);
 236         gl_label_object_set_line_width (object, line_width);
 237
 238         shadow_state = gl_object_editor_get_shadow_state (editor);
 239         gl_label_object_set_shadow_state (object, shadow_state);
 240
 241         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 242         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 243
 244         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 245         gl_label_object_set_shadow_color (object, shadow_color_node);
 246         gl_color_node_free (&shadow_color_node);
 247
 248         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 249         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 250
 251         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 252                                            update_editor_from_object_cb,
 253                                            editor);
 254         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 255                                            update_editor_from_move_cb,
 256                                            editor);
 257
 258         gl_debug (DEBUG_VIEW, "END");
 259 }
 260
 261 /*---------------------------------------------------------------------------*/
 262 /* PRIVATE. label object "changed" callback.                                 */
 263 /*---------------------------------------------------------------------------*/
 264 static void
 265 update_editor_from_object_cb (glLabelObject  *object,
 266                               glObjectEditor *editor)
 267 {
 268         gdouble            w, h;
 269         glColorNode       *line_color_node;
 270         gdouble            line_width;
 271         gboolean           shadow_state;
 272         gdouble            shadow_x, shadow_y;
 273         glColorNode       *shadow_color_node;
 274         gdouble            shadow_opacity;
 275         glMerge           *merge;
 276
 277         gl_debug (DEBUG_VIEW, "START");
 278
 279         gl_label_object_get_size (object, &w, &h);
 280         gl_object_editor_set_lsize (editor, w, h);
 281         merge = gl_label_get_merge (GL_LABEL(object->parent));
 282
 283         line_color_node = gl_label_object_get_line_color (GL_LABEL_OBJECT(object));
 284         gl_object_editor_set_line_color (editor, (merge != NULL), line_color_node);
 285         gl_color_node_free (&line_color_node);
 286
 287         line_width = gl_label_object_get_line_width (GL_LABEL_OBJECT(object));
 288         gl_object_editor_set_line_width (editor, line_width);
 289
 290         shadow_state = gl_label_object_get_shadow_state (object);
 291         gl_object_editor_set_shadow_state (editor, shadow_state);
 292
 293         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 294         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 295
 296         shadow_color_node = gl_label_object_get_shadow_color (object);
 297         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 298         gl_color_node_free (&shadow_color_node);
 299
 300         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 301         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 302
 303         gl_debug (DEBUG_VIEW, "END");
 304 }
 305
 306 /*---------------------------------------------------------------------------*/
 307 /* PRIVATE. label object "moved" callback.                                   */
 308 /*---------------------------------------------------------------------------*/
 309 static void
 310 update_editor_from_move_cb (glLabelObject    *object,
 311                             gdouble           dx,
 312                             gdouble           dy,
 313                             glObjectEditor   *editor)
 314 {
 315         gdouble            x, y;
 316
 317         gl_debug (DEBUG_VIEW, "START");
 318
 319         gl_label_object_get_position (object, &x, &y);
 320         gl_object_editor_set_position (editor, x, y);
 321
 322         gl_debug (DEBUG_VIEW, "END");
 323 }
 324
 325 /*****************************************************************************/
 326 /* Is object at (x,y)?                                                       */
 327 /*****************************************************************************/
 328 static gboolean
 329 object_at (glViewObject  *view_object,
 330            cairo_t       *cr,
 331            gdouble        x,
 332            gdouble        y)
 333 {
 334         glLabelObject    *object;
 335         gdouble           w, h;
 336         gdouble           line_width;
 337
 338         object = gl_view_object_get_object (view_object);
 339
 340         gl_label_object_get_size (object, &w, &h);
 341
 342         cairo_move_to (cr, 0.0, 0.0);
 343         cairo_line_to (cr, w, h);
 344
 345         line_width = gl_label_object_get_line_width (object);
 346         cairo_set_line_width (cr, line_width);
 347         if (cairo_in_stroke (cr, x, y))
 348         {
 349                 return TRUE;
 350         }
 351
 352         return FALSE;
 353 }
 354
 355
 356 /*****************************************************************************/
 357 /* Return apropos cursor for create object mode.                             */
 358 /*****************************************************************************/
 359 GdkCursor *
 360 gl_view_line_get_create_cursor (void)
 361 {
 362         GdkCursor       *cursor = NULL;
 363         GdkPixmap       *pixmap_data, *pixmap_mask;
 364         GdkColor         fg = { 0, 0, 0, 0 };
 365         GdkColor         bg = { 0, 65535, 65535, 65535 };
 366
 367         gl_debug (DEBUG_VIEW, "START");
 368
 369         pixmap_data = gdk_bitmap_create_from_data (NULL,
 370                                                    (gchar *)cursor_line_bits,
 371                                                    cursor_line_width,
 372                                                    cursor_line_height);
 373         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 374                                                    (gchar *)cursor_line_mask_bits,
 375                                                    cursor_line_mask_width,
 376                                                    cursor_line_mask_height);
 377         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 378                                              &bg, cursor_line_x_hot,
 379                                              cursor_line_y_hot);
 380
 381         gl_debug (DEBUG_VIEW, "END");
 382
 383         return cursor;
 384 }
 385
 386 /*****************************************************************************/
 387 /* Object creation handler: button press event.                              */
 388 /*****************************************************************************/
 389 void
 390 gl_view_line_create_button_press_event   (glView *view,
 391                                           gdouble x,
 392                                           gdouble y)
 393 {
 394         GObject             *object;
 395         glColorNode         *line_color_node;
 396
 397         gl_view_unselect_all (view);
 398
 399         line_color_node = gl_color_node_new_default ();
 400
 401         object = gl_label_line_new (view->label);
 402         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 403         gl_label_object_set_size (GL_LABEL_OBJECT(object), 0.0, 0.0);
 404         line_color_node->color = gl_color_set_opacity (gl_view_get_default_line_color(view), 0.5);
 405         gl_label_object_set_line_width (GL_LABEL_OBJECT(object),
 406                                         gl_view_get_default_line_width(view));
 407         gl_label_object_set_line_color (GL_LABEL_OBJECT(object),
 408                                         line_color_node);
 409
 410         gl_color_node_free (&line_color_node);
 411
 412         view->create_object = GL_LABEL_OBJECT (object);
 413         view->create_x0 = x;
 414         view->create_y0 = y;
 415 }
 416
 417 /*****************************************************************************/
 418 /* Object creation handler: motion event.                                    */
 419 /*****************************************************************************/
 420 void
 421 gl_view_line_create_motion_event     (glView *view,
 422                                       gdouble x,
 423                                       gdouble y)
 424 {
 425         gdouble w, h;
 426
 427         w = x - view->create_x0;
 428         h = y - view->create_y0;
 429         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 430 }
 431
 432 /*****************************************************************************/
 433 /* Object creation handler: button relesase event.                           */
 434 /*****************************************************************************/
 435 void
 436 gl_view_line_create_button_release_event (glView *view,
 437                                           gdouble x,
 438                                           gdouble y)
 439 {
 440         glColorNode         *line_color_node;
 441         gdouble              w, h;
 442
 443         line_color_node = gl_color_node_new_default ();
 444
 445         if ((view->create_x0 == x) && (view->create_y0 == y)) {
 446                 x = view->create_x0 + 36.0;
 447                 y = view->create_y0 + 36.0;
 448         }
 449         w = x - view->create_x0;
 450         h = y - view->create_y0;
 451         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 452         line_color_node->color = gl_view_get_default_line_color(view);
 453         gl_label_object_set_line_color (GL_LABEL_OBJECT(view->create_object), line_color_node);
 454         gl_color_node_free (&line_color_node);
 455 }
 456