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 gboolean   object_at                         (glViewObject     *view_object,
  77                                                      cairo_t          *cr,
  78                                                      gdouble           x,
  79                                                      gdouble           y);
  80
  81
  82 \f
  83 /*****************************************************************************/
  84 /* Boilerplate object stuff.                                                 */
  85 /*****************************************************************************/
  86 G_DEFINE_TYPE (glViewImage, gl_view_image, GL_TYPE_VIEW_OBJECT);
  87
  88
  89 static void
  90 gl_view_image_class_init (glViewImageClass *class)
  91 {
  92         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  93         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
  94
  95         gl_debug (DEBUG_VIEW, "START");
  96
  97         gl_view_image_parent_class = g_type_class_peek_parent (class);
  98
  99         object_class->finalize = gl_view_image_finalize;
 100
 101         view_object_class->construct_editor = construct_properties_editor;
 102         view_object_class->object_at        = object_at;
 103
 104         gl_debug (DEBUG_VIEW, "END");
 105 }
 106
 107 static void
 108 gl_view_image_init (glViewImage *view_image)
 109 {
 110         gl_debug (DEBUG_VIEW, "START");
 111
 112         view_image->priv = g_new0 (glViewImagePrivate, 1);
 113
 114         gl_debug (DEBUG_VIEW, "END");
 115 }
 116
 117 static void
 118 gl_view_image_finalize (GObject *object)
 119 {
 120         glViewImage *view_image = GL_VIEW_IMAGE (object);
 121
 122         gl_debug (DEBUG_VIEW, "START");
 123
 124         g_return_if_fail (object && GL_IS_VIEW_IMAGE (object));
 125
 126         g_free (view_image->priv);
 127
 128         G_OBJECT_CLASS (gl_view_image_parent_class)->finalize (object);
 129
 130         gl_debug (DEBUG_VIEW, "END");
 131 }
 132
 133 /*****************************************************************************/
 134 /* NEW image object view.                                                    */
 135 /*****************************************************************************/
 136 glViewObject *
 137 gl_view_image_new (glLabelImage *object,
 138                    glView       *view)
 139 {
 140         glViewImage         *view_image;
 141
 142         gl_debug (DEBUG_VIEW, "START");
 143
 144         g_return_val_if_fail (object && GL_IS_LABEL_IMAGE (object), NULL);
 145         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 146
 147         view_image = g_object_new (gl_view_image_get_type(), NULL);
 148
 149         gl_view_object_set_object (GL_VIEW_OBJECT(view_image),
 150                                    GL_LABEL_OBJECT(object),
 151                                    GL_VIEW_OBJECT_HANDLES_BOX);
 152         gl_view_object_set_view (GL_VIEW_OBJECT(view_image), view);
 153
 154         gl_debug (DEBUG_VIEW, "END");
 155
 156         return GL_VIEW_OBJECT (view_image);
 157 }
 158
 159 /*****************************************************************************/
 160 /* Create a properties dialog for a image object.                            */
 161 /*****************************************************************************/
 162 static GtkWidget *
 163 construct_properties_editor (glViewObject *view_object)
 164 {
 165         GtkWidget          *editor;
 166         glViewImage        *view_image = (glViewImage *)view_object;
 167         glLabelObject      *object;
 168
 169         gl_debug (DEBUG_VIEW, "START");
 170
 171         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_image));
 172
 173         /* Build editor. */
 174         editor = gl_object_editor_new (GL_STOCK_IMAGE, _("Image object properties"),
 175                                        object->parent,
 176                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 177                                        GL_OBJECT_EDITOR_SIZE_IMAGE_PAGE,
 178                                        GL_OBJECT_EDITOR_IMAGE_PAGE,
 179                                        0);
 180
 181         /* Update */
 182         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 183         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 184
 185         /* Connect signals. */
 186         g_signal_connect (G_OBJECT (editor), "changed",
 187                           G_CALLBACK(update_object_from_editor_cb), object);
 188         g_signal_connect (G_OBJECT (object), "changed",
 189                           G_CALLBACK (update_editor_from_object_cb), editor);
 190         g_signal_connect (G_OBJECT (object), "moved",
 191                           G_CALLBACK (update_editor_from_move_cb), editor);
 192
 193         gl_debug (DEBUG_VIEW, "END");
 194
 195         return editor;
 196 }
 197
 198 /*---------------------------------------------------------------------------*/
 199 /* PRIVATE.  editor "changed" callback.                                      */
 200 /*---------------------------------------------------------------------------*/
 201 static void
 202 update_object_from_editor_cb (glObjectEditor *editor,
 203                               glLabelObject  *object)
 204 {
 205         gdouble            x, y, w, h;
 206         glTextNode        *filename;
 207         const GdkPixbuf   *pixbuf;
 208         gdouble            image_w, image_h;
 209         gdouble            new_w, new_h;
 210
 211         gl_debug (DEBUG_VIEW, "START");
 212
 213         g_signal_handlers_block_by_func (G_OBJECT(object),
 214                                          update_editor_from_object_cb,
 215                                          editor);
 216         g_signal_handlers_block_by_func (G_OBJECT(object),
 217                                          update_editor_from_move_cb,
 218                                          editor);
 219
 220
 221         gl_object_editor_get_position (editor, &x, &y);
 222         gl_label_object_set_position (object, x, y);
 223
 224         gl_object_editor_get_size (editor, &w, &h);
 225         gl_label_object_set_size (object, w, h);
 226
 227         filename = gl_object_editor_get_image (editor);
 228         gl_label_image_set_filename (GL_LABEL_IMAGE(object), filename);
 229         gl_text_node_free (&filename);
 230
 231         /* Setting filename may have modified the size. */
 232         gl_label_object_get_size (object, &new_w, &new_h);
 233         if ( (new_w != w) || (new_h != h) )
 234         {
 235                 gl_object_editor_set_size (editor, new_w, new_h);
 236         }
 237
 238         /* It may also have a new base size. */
 239         pixbuf = gl_label_image_get_pixbuf (GL_LABEL_IMAGE(object), NULL);
 240         image_w = gdk_pixbuf_get_width (pixbuf);
 241         image_h = gdk_pixbuf_get_height (pixbuf);
 242         gl_object_editor_set_base_size (editor, image_w, image_h);
 243
 244         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 245                                            update_editor_from_object_cb,
 246                                            editor);
 247         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 248                                            update_editor_from_move_cb,
 249                                            editor);
 250
 251         gl_debug (DEBUG_VIEW, "END");
 252 }
 253
 254 /*---------------------------------------------------------------------------*/
 255 /* PRIVATE. label object "changed" callback.                                 */
 256 /*---------------------------------------------------------------------------*/
 257 static void
 258 update_editor_from_object_cb (glLabelObject  *object,
 259                               glObjectEditor *editor)
 260 {
 261         gdouble            w, h;
 262         const GdkPixbuf   *pixbuf;
 263         gdouble            image_w, image_h;
 264         glTextNode        *filename;
 265         glMerge           *merge;
 266
 267         gl_debug (DEBUG_VIEW, "START");
 268
 269         gl_label_object_get_size (object, &w, &h);
 270         gl_object_editor_set_size (editor, w, h);
 271
 272         pixbuf = gl_label_image_get_pixbuf (GL_LABEL_IMAGE(object), NULL);
 273         image_w = gdk_pixbuf_get_width (pixbuf);
 274         image_h = gdk_pixbuf_get_height (pixbuf);
 275         gl_object_editor_set_base_size (editor, image_w, image_h);
 276
 277         filename = gl_label_image_get_filename (GL_LABEL_IMAGE(object));
 278         merge = gl_label_get_merge (GL_LABEL(object->parent));
 279         if ( filename != NULL ) {
 280                 gl_object_editor_set_image (editor, (merge != NULL), filename);
 281         }
 282
 283         gl_debug (DEBUG_VIEW, "END");
 284 }
 285
 286 /*---------------------------------------------------------------------------*/
 287 /* PRIVATE. label object "moved" callback.                                   */
 288 /*---------------------------------------------------------------------------*/
 289 static void
 290 update_editor_from_move_cb (glLabelObject    *object,
 291                             gdouble           dx,
 292                             gdouble           dy,
 293                             glObjectEditor   *editor)
 294 {
 295         gdouble            x, y;
 296
 297         gl_debug (DEBUG_VIEW, "START");
 298
 299         gl_label_object_get_position (object, &x, &y);
 300         gl_object_editor_set_position (editor, x, y);
 301
 302         gl_debug (DEBUG_VIEW, "END");
 303 }
 304
 305 /*****************************************************************************/
 306 /* Is object at (x,y)?                                                       */
 307 /*****************************************************************************/
 308 static gboolean
 309 object_at (glViewObject  *view_object,
 310            cairo_t       *cr,
 311            gdouble        x,
 312            gdouble        y)
 313 {
 314         glLabelObject    *object;
 315         gdouble           w, h;
 316
 317         object = gl_view_object_get_object (view_object);
 318
 319         gl_label_object_get_size (object, &w, &h);
 320
 321         cairo_rectangle (cr, 0.0, 0.0, w, h);
 322
 323         if (cairo_in_fill (cr, x, y))
 324         {
 325                 return TRUE;
 326         }
 327
 328         return FALSE;
 329 }
 330
 331
 332 /*****************************************************************************/
 333 /* Return apropos cursor for create object mode.                             */
 334 /*****************************************************************************/
 335 GdkCursor *
 336 gl_view_image_get_create_cursor (void)
 337 {
 338         GdkCursor       *cursor = NULL;
 339         GdkPixmap       *pixmap_data, *pixmap_mask;
 340         GdkColor         fg = { 0, 0, 0, 0 };
 341         GdkColor         bg = { 0, 65535, 65535, 65535 };
 342
 343         gl_debug (DEBUG_VIEW, "START");
 344
 345         pixmap_data = gdk_bitmap_create_from_data (NULL,
 346                                                    (gchar *)cursor_image_bits,
 347                                                    cursor_image_width,
 348                                                    cursor_image_height);
 349         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 350                                                    (gchar *)cursor_image_mask_bits,
 351                                                    cursor_image_mask_width,
 352                                                    cursor_image_mask_height);
 353         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 354                                              &bg, cursor_image_x_hot,
 355                                              cursor_image_y_hot);
 356
 357         gl_debug (DEBUG_VIEW, "END");
 358
 359         return cursor;
 360 }
 361
 362 /*****************************************************************************/
 363 /* Object creation handler: button press event.                              */
 364 /*****************************************************************************/
 365 void
 366 gl_view_image_create_button_press_event   (glView *view,
 367                                            gdouble x,
 368                                            gdouble y)
 369 {
 370         GObject             *object;
 371
 372         gl_view_unselect_all (view);
 373
 374         object = gl_label_image_new (view->label);
 375         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 376         gl_label_object_set_size (GL_LABEL_OBJECT(object), 0.0, 0.0);
 377
 378         view->create_object = GL_LABEL_OBJECT (object);
 379         view->create_x0 = x;
 380         view->create_y0 = y;
 381 }
 382
 383 /*****************************************************************************/
 384 /* Object creation handler: motion event.                                    */
 385 /*****************************************************************************/
 386 void
 387 gl_view_image_create_motion_event     (glView *view,
 388                                        gdouble x,
 389                                        gdouble y)
 390 {
 391         gdouble w, h;
 392
 393         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 394                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 395         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 396         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 397         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 398 }
 399
 400 /*****************************************************************************/
 401 /* Object creation handler: button relesase event.                           */
 402 /*****************************************************************************/
 403 void
 404 gl_view_image_create_button_release_event (glView *view,
 405                                            gdouble x,
 406                                            gdouble y)
 407 {
 408         gdouble              w, h;
 409
 410         if ((view->create_x0 == x) && (view->create_y0 == y)) {
 411                 x = view->create_x0 + 36.0;
 412                 y = view->create_y0 + 36.0;
 413         }
 414         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object),
 415                                       MIN (x, view->create_x0), MIN (y, view->create_y0));
 416         w = MAX (x, view->create_x0) - MIN (x, view->create_x0);
 417         h = MAX (y, view->create_y0) - MIN (y, view->create_y0);
 418         gl_label_object_set_size (GL_LABEL_OBJECT(view->create_object), w, h);
 419 }
 420