git.sur5r.net Git - glabels/blob - glabels2/src/view-image.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_image.c:  GLabels label image 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-image.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_image.xbm"
  36 #include "pixmaps/cursor_image_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 _glViewImagePrivate {
  50 };
  51
  52 /*========================================================*/
  53 /* Private globals.                                       */
  54 /*========================================================*/
  55
  56
  57 /*========================================================*/
  58 /* Private function prototypes.                           */
  59 /*========================================================*/
  60
  61 static void       gl_view_image_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 (glViewImage, gl_view_image, GL_TYPE_VIEW_OBJECT);
  90
  91
  92 static void
  93 gl_view_image_class_init (glViewImageClass *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_image_parent_class = g_type_class_peek_parent (class);
 101
 102         object_class->finalize = gl_view_image_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_image_init (glViewImage *view_image)
 112 {
 113         gl_debug (DEBUG_VIEW, "START");
 114
 115         view_image->priv = g_new0 (glViewImagePrivate, 1);
 116
 117         gl_debug (DEBUG_VIEW, "END");
 118 }
 119
 120 static void
 121 gl_view_image_finalize (GObject *object)
 122 {
 123         glViewImage *view_image = GL_VIEW_IMAGE (object);
 124
 125         gl_debug (DEBUG_VIEW, "START");
 126
 127         g_return_if_fail (object && GL_IS_VIEW_IMAGE (object));
 128
 129         g_free (view_image->priv);
 130
 131         G_OBJECT_CLASS (gl_view_image_parent_class)->finalize (object);
 132
 133         gl_debug (DEBUG_VIEW, "END");
 134 }
 135
 136 /*****************************************************************************/
 137 /* NEW image object view.                                                    */
 138 /*****************************************************************************/
 139 glViewObject *
 140 gl_view_image_new (glLabelImage *object,
 141                    glView       *view)
 142 {
 143         glViewImage         *view_image;
 144
 145         gl_debug (DEBUG_VIEW, "START");
 146
 147         g_return_val_if_fail (object && GL_IS_LABEL_IMAGE (object), NULL);
 148         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 149
 150         view_image = g_object_new (gl_view_image_get_type(), NULL);
 151
 152         gl_view_object_set_object (GL_VIEW_OBJECT(view_image),
 153                                    GL_LABEL_OBJECT(object),
 154                                    GL_VIEW_OBJECT_HANDLES_BOX);
 155         gl_view_object_set_view (GL_VIEW_OBJECT(view_image), view);
 156
 157         gl_debug (DEBUG_VIEW, "END");
 158
 159         return GL_VIEW_OBJECT (view_image);
 160 }
 161
 162 /*****************************************************************************/
 163 /* Create a properties dialog for a image object.                            */
 164 /*****************************************************************************/
 165 static GtkWidget *
 166 construct_properties_editor (glViewObject *view_object)
 167 {
 168         GtkWidget          *editor;
 169         glViewImage        *view_image = (glViewImage *)view_object;
 170         glLabelObject      *object;
 171
 172         gl_debug (DEBUG_VIEW, "START");
 173
 174         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_image));
 175
 176         /* Build editor. */
 177         editor = gl_object_editor_new (GL_STOCK_IMAGE, _("Image object properties"),
 178                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 179                                        GL_OBJECT_EDITOR_SIZE_IMAGE_PAGE,
 180                                        GL_OBJECT_EDITOR_IMAGE_PAGE,
 181                                        0);
 182
 183         /* Update */
 184         update_editor_from_label_cb (object->parent, GL_OBJECT_EDITOR(editor));
 185         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 186         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 187
 188         /* Connect signals. */
 189         g_signal_connect (G_OBJECT (editor), "changed",
 190                           G_CALLBACK(update_object_from_editor_cb), object);
 191         g_signal_connect (G_OBJECT (object), "changed",
 192                           G_CALLBACK (update_editor_from_object_cb), editor);
 193         g_signal_connect (G_OBJECT (object), "moved",
 194                           G_CALLBACK (update_editor_from_move_cb), editor);
 195         g_signal_connect (G_OBJECT (object->parent), "size_changed",
 196                           G_CALLBACK (update_editor_from_label_cb), editor);
 197         g_signal_connect (G_OBJECT (object->parent), "merge_changed",
 198                           G_CALLBACK (update_editor_from_label_cb), editor);
 199
 200         gl_debug (DEBUG_VIEW, "END");
 201
 202         return editor;
 203 }
 204
 205 /*---------------------------------------------------------------------------*/
 206 /* PRIVATE.  editor "changed" callback.                                      */
 207 /*---------------------------------------------------------------------------*/
 208 static void
 209 update_object_from_editor_cb (glObjectEditor *editor,
 210                               glLabelObject  *object)
 211 {
 212         gdouble            x, y, w, h;
 213         glTextNode        *filename;
 214         const GdkPixbuf   *pixbuf;
 215         gdouble            image_w, image_h;
 216
 217         gl_debug (DEBUG_VIEW, "START");
 218
 219         g_signal_handlers_block_by_func (G_OBJECT(object),
 220                                          update_editor_from_object_cb,
 221                                          editor);
 222         g_signal_handlers_block_by_func (G_OBJECT(object),
 223                                          update_editor_from_move_cb,
 224                                          editor);
 225
 226
 227         gl_object_editor_get_position (editor, &x, &y);
 228         gl_label_object_set_position (object, x, y);
 229
 230         gl_object_editor_get_size (editor, &w, &h);
 231         gl_label_object_set_size (object, w, h);
 232
 233         filename = gl_object_editor_get_image (editor);
 234         gl_label_image_set_filename (GL_LABEL_IMAGE(object), filename);
 235         gl_text_node_free (&filename);
 236
 237         /* Setting filename may have modified the size. */
 238         gl_label_object_get_size (object, &w, &h);
 239         gl_object_editor_set_size (editor, w, h);
 240
 241         /* It may also have a new base size. */
 242         pixbuf = gl_label_image_get_pixbuf (GL_LABEL_IMAGE(object), NULL);
 243         image_w = gdk_pixbuf_get_width (pixbuf);
 244         image_h = gdk_pixbuf_get_height (pixbuf);
 245         gl_object_editor_set_base_size (editor, image_w, image_h);
 246
 247         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 248                                            update_editor_from_object_cb,
 249                                            editor);
 250         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 251                                            update_editor_from_move_cb,
 252                                            editor);
 253
 254         gl_debug (DEBUG_VIEW, "END");
 255 }
 256
 257 /*---------------------------------------------------------------------------*/
 258 /* PRIVATE. label object "changed" callback.                                 */
 259 /*---------------------------------------------------------------------------*/
 260 static void
 261 update_editor_from_object_cb (glLabelObject  *object,
 262                               glObjectEditor *editor)
 263 {
 264         gdouble            w, h;
 265         const GdkPixbuf   *pixbuf;
 266         gdouble            image_w, image_h;
 267         glTextNode        *filename;
 268         glMerge           *merge;
 269
 270         gl_debug (DEBUG_VIEW, "START");
 271
 272         gl_label_object_get_size (object, &w, &h);
 273         gl_object_editor_set_size (editor, w, h);
 274
 275         pixbuf = gl_label_image_get_pixbuf (GL_LABEL_IMAGE(object), NULL);
 276         image_w = gdk_pixbuf_get_width (pixbuf);
 277         image_h = gdk_pixbuf_get_height (pixbuf);
 278         gl_object_editor_set_base_size (editor, image_w, image_h);
 279
 280         filename = gl_label_image_get_filename (GL_LABEL_IMAGE(object));
 281         merge = gl_label_get_merge (GL_LABEL(object->parent));
 282         if ( filename != NULL ) {
 283                 gl_object_editor_set_image (editor, (merge != NULL), filename);
 284         }
 285
 286         gl_debug (DEBUG_VIEW, "END");
 287 }
 288
 289 /*---------------------------------------------------------------------------*/
 290 /* PRIVATE. label object "moved" callback.                                   */
 291 /*---------------------------------------------------------------------------*/
 292 static void
 293 update_editor_from_move_cb (glLabelObject    *object,
 294                             gdouble           dx,
 295                             gdouble           dy,
 296                             glObjectEditor   *editor)
 297 {
 298         gdouble            x, y;
 299
 300         gl_debug (DEBUG_VIEW, "START");
 301
 302         gl_label_object_get_position (object, &x, &y);
 303         gl_object_editor_set_position (editor, x, y);
 304
 305         gl_debug (DEBUG_VIEW, "END");
 306 }
 307
 308 /*---------------------------------------------------------------------------*/
 309 /* PRIVATE. label "changed" callback.                                        */
 310 /*---------------------------------------------------------------------------*/
 311 static void
 312 update_editor_from_label_cb (glLabel        *label,
 313                              glObjectEditor *editor)
 314 {
 315         gdouble            label_width, label_height;
 316         glMerge                    *merge;
 317
 318         gl_debug (DEBUG_VIEW, "START");
 319
 320         gl_label_get_size (label, &label_width, &label_height);
 321         gl_object_editor_set_max_position (GL_OBJECT_EDITOR (editor),
 322                                            label_width, label_height);
 323         gl_object_editor_set_max_size (GL_OBJECT_EDITOR (editor),
 324                                        label_width, label_height);
 325
 326         merge = gl_label_get_merge (label);
 327         gl_object_editor_set_key_names (editor, merge);
 328
 329         gl_debug (DEBUG_VIEW, "END");
 330 }
 331
 332 /*****************************************************************************/
 333 /* Is object at (x,y)?                                                       */
 334 /*****************************************************************************/
 335 static gboolean
 336 object_at (glViewObject  *view_object,
 337            cairo_t       *cr,
 338            gdouble        x,
 339            gdouble        y)
 340 {
 341         glLabelObject    *object;
 342         gdouble           w, h;
 343
 344         object = gl_view_object_get_object (view_object);
 345
 346         gl_label_object_get_size (object, &w, &h);
 347
 348         cairo_rectangle (cr, 0.0, 0.0, w, h);
 349
 350         if (cairo_in_fill (cr, x, y))
 351         {
 352                 return TRUE;
 353         }
 354
 355         return FALSE;
 356 }
 357
 358
 359 /*****************************************************************************/
 360 /* Return apropos cursor for create object mode.                             */
 361 /*****************************************************************************/
 362 GdkCursor *
 363 gl_view_image_get_create_cursor (void)
 364 {
 365         GdkCursor       *cursor = NULL;
 366         GdkPixmap       *pixmap_data, *pixmap_mask;
 367         GdkColor         fg = { 0, 0, 0, 0 };
 368         GdkColor         bg = { 0, 65535, 65535, 65535 };
 369
 370         gl_debug (DEBUG_VIEW, "START");
 371
 372         pixmap_data = gdk_bitmap_create_from_data (NULL,
 373                                                    (gchar *)cursor_image_bits,
 374                                                    cursor_image_width,
 375                                                    cursor_image_height);
 376         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 377                                                    (gchar *)cursor_image_mask_bits,
 378                                                    cursor_image_mask_width,
 379                                                    cursor_image_mask_height);
 380         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 381                                              &bg, cursor_image_x_hot,
 382                                              cursor_image_y_hot);
 383
 384         gl_debug (DEBUG_VIEW, "END");
 385
 386         return cursor;
 387 }
 388
 389 /*****************************************************************************/
 390 /* Object creation handler: button press event.                              */
 391 /*****************************************************************************/
 392 void
 393 gl_view_image_create_button_press_event   (glView *view,
 394                                            gdouble x,
 395                                            gdouble y)
 396 {
 397         GObject             *object;
 398
 399         gl_view_unselect_all (view);
 400
 401         object = gl_label_image_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
 405         view->create_object = GL_LABEL_OBJECT (object);
 406         view->create_x0 = x;
 407         view->create_y0 = y;
 408 }
 409
 410 /*****************************************************************************/
 411 /* Object creation handler: motion event.                                    */
 412 /*****************************************************************************/
 413 void
 414 gl_view_image_create_motion_event     (glView *view,
 415                                        gdouble x,
 416                                        gdouble y)
 417 {
 418         gdouble w, h;
 419
 420         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 421                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 422         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 423         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 424         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 425 }
 426
 427 /*****************************************************************************/
 428 /* Object creation handler: button relesase event.                           */
 429 /*****************************************************************************/
 430 void
 431 gl_view_image_create_button_release_event (glView *view,
 432                                            gdouble x,
 433                                            gdouble y)
 434 {
 435         gdouble              w, h;
 436
 437         if ((view->create_x0 == x) && (view->create_y0 == y)) {
 438                 x = view->create_x0 + 36.0;
 439                 y = view->create_y0 + 36.0;
 440         }
 441         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 442                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 443         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 444         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 445         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 446 }
 447