git.sur5r.net Git - glabels/blob - src/view-text.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_text.c:  GLabels label text 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-text.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_text.xbm"
  36 #include "pixmaps/cursor_text_mask.xbm"
  37
  38 #include "debug.h"
  39
  40 /*========================================================*/
  41 /* Private macros and constants.                          */
  42 /*========================================================*/
  43
  44 /*========================================================*/
  45 /* Private types.                                         */
  46 /*========================================================*/
  47
  48 struct _glViewTextPrivate {
  49         int place_holder; /* Place holder for future private data. */
  50 };
  51
  52 /*========================================================*/
  53 /* Private globals.                                       */
  54 /*========================================================*/
  55
  56
  57 /*========================================================*/
  58 /* Private function prototypes.                           */
  59 /*========================================================*/
  60
  61 static void       gl_view_text_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_object_from_editor_size_cb (glObjectEditor   *editor,
  69                                                      glLabelObject    *object);
  70
  71 static void       update_editor_from_object_cb      (glLabelObject    *object,
  72                                                      glObjectEditor   *editor);
  73
  74 static void       update_editor_from_move_cb        (glLabelObject    *object,
  75                                                      gdouble           dx,
  76                                                      gdouble           dy,
  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
  86 \f
  87 /*****************************************************************************/
  88 /* Boilerplate object stuff.                                                 */
  89 /*****************************************************************************/
  90 G_DEFINE_TYPE (glViewText, gl_view_text, GL_TYPE_VIEW_OBJECT);
  91
  92
  93 static void
  94 gl_view_text_class_init (glViewTextClass *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_text_parent_class = g_type_class_peek_parent (class);
 102
 103         object_class->finalize = gl_view_text_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_text_init (glViewText *view_text)
 113 {
 114         gl_debug (DEBUG_VIEW, "START");
 115
 116         view_text->priv = g_new0 (glViewTextPrivate, 1);
 117
 118         gl_debug (DEBUG_VIEW, "END");
 119 }
 120
 121 static void
 122 gl_view_text_finalize (GObject *object)
 123 {
 124         glViewText *view_text = GL_VIEW_TEXT (object);
 125
 126         gl_debug (DEBUG_VIEW, "START");
 127
 128         g_return_if_fail (object && GL_IS_VIEW_TEXT (object));
 129
 130         g_free (view_text->priv);
 131
 132         G_OBJECT_CLASS (gl_view_text_parent_class)->finalize (object);
 133
 134         gl_debug (DEBUG_VIEW, "END");
 135 }
 136
 137 /*****************************************************************************/
 138 /* NEW text object view.                                                     */
 139 /*****************************************************************************/
 140 glViewObject *
 141 gl_view_text_new (glLabelText *object,
 142                   glView      *view)
 143 {
 144         glViewText         *view_text;
 145
 146         gl_debug (DEBUG_VIEW, "START");
 147
 148         g_return_val_if_fail (object && GL_IS_LABEL_TEXT (object), NULL);
 149         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 150
 151         view_text = g_object_new (gl_view_text_get_type(), NULL);
 152
 153         gl_view_object_set_object (GL_VIEW_OBJECT(view_text),
 154                                    GL_LABEL_OBJECT(object),
 155                                    GL_VIEW_OBJECT_HANDLES_BOX);
 156         gl_view_object_set_view (GL_VIEW_OBJECT(view_text), view);
 157
 158         gl_debug (DEBUG_VIEW, "END");
 159
 160         return GL_VIEW_OBJECT (view_text);
 161 }
 162
 163 /*****************************************************************************/
 164 /* Create a properties dialog for a text object.                             */
 165 /*****************************************************************************/
 166 static GtkWidget *
 167 construct_properties_editor (glViewObject *view_object)
 168 {
 169         GtkWidget          *editor;
 170         glViewText          *view_text = (glViewText *)view_object;
 171         glLabelObject      *object;
 172         GtkTextBuffer      *buffer;
 173
 174         gl_debug (DEBUG_VIEW, "START");
 175
 176         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 177
 178         /* Build editor. */
 179         editor = gl_object_editor_new (GL_STOCK_TEXT, _("Text object properties"),
 180                                        object->parent,
 181                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 182                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 183                                        GL_OBJECT_EDITOR_SIZE_PAGE,
 184                                        GL_OBJECT_EDITOR_TEXT_PAGE,
 185                                        GL_OBJECT_EDITOR_EDIT_PAGE,
 186                                        0);
 187
 188         buffer = gl_label_text_get_buffer (GL_LABEL_TEXT(object));
 189         gl_object_editor_set_text_buffer (GL_OBJECT_EDITOR(editor), buffer);
 190
 191         /* Update */
 192         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 193         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 194
 195         /* Connect signals. */
 196         g_signal_connect (G_OBJECT (editor), "changed",
 197                           G_CALLBACK(update_object_from_editor_cb), object);
 198         g_signal_connect (G_OBJECT (editor), "size_changed",
 199                           G_CALLBACK(update_object_from_editor_size_cb), object);
 200         g_signal_connect (G_OBJECT (object), "changed",
 201                           G_CALLBACK (update_editor_from_object_cb), editor);
 202         g_signal_connect (G_OBJECT (object), "moved",
 203                           G_CALLBACK (update_editor_from_move_cb), editor);
 204
 205         gl_debug (DEBUG_VIEW, "END");
 206
 207         return editor;
 208 }
 209
 210 /*---------------------------------------------------------------------------*/
 211 /* PRIVATE.  editor "changed" callback.                                      */
 212 /*---------------------------------------------------------------------------*/
 213 static void
 214 update_object_from_editor_cb (glObjectEditor *editor,
 215                               glLabelObject  *object)
 216 {
 217         gdouble            x, y;
 218         gchar             *font_family;
 219         gdouble            font_size;
 220         PangoWeight        font_weight;
 221         gboolean           font_italic_flag;
 222         glColorNode       *color_node;
 223         PangoAlignment     align;
 224         gdouble            text_line_spacing;
 225         gboolean           auto_shrink;
 226         gboolean           shadow_state;
 227         gdouble            shadow_x, shadow_y;
 228         glColorNode       *shadow_color_node;
 229         gdouble            shadow_opacity;
 230
 231         gl_debug (DEBUG_VIEW, "START");
 232
 233         g_signal_handlers_block_by_func (G_OBJECT(object),
 234                                          update_editor_from_object_cb,
 235                                          editor);
 236         g_signal_handlers_block_by_func (G_OBJECT(object),
 237                                          update_editor_from_move_cb,
 238                                          editor);
 239
 240         gl_object_editor_get_position (editor, &x, &y);
 241         font_family = gl_object_editor_get_font_family (editor);
 242         font_size = gl_object_editor_get_font_size (editor);
 243         font_weight = gl_object_editor_get_font_weight (editor);
 244         font_italic_flag = gl_object_editor_get_font_italic_flag (editor);
 245         color_node = gl_object_editor_get_text_color (editor);
 246         align = gl_object_editor_get_text_alignment (editor);
 247         text_line_spacing = gl_object_editor_get_text_line_spacing (editor);
 248         auto_shrink = gl_object_editor_get_text_auto_shrink (editor);
 249
 250         gl_label_object_set_position (object, x, y);
 251         gl_label_object_set_font_family (object, font_family);
 252         gl_label_object_set_font_size (object, font_size);
 253         gl_label_object_set_font_weight (object, font_weight);
 254         gl_label_object_set_font_italic_flag (object, font_italic_flag);
 255         gl_label_object_set_text_color (object, color_node);
 256         gl_label_object_set_text_alignment (object, align);
 257         gl_label_object_set_text_line_spacing (object, text_line_spacing);
 258         gl_label_text_set_auto_shrink (GL_LABEL_TEXT (object), auto_shrink);
 259
 260         gl_color_node_free (&color_node);
 261         g_free (font_family);
 262
 263         shadow_state = gl_object_editor_get_shadow_state (editor);
 264         gl_label_object_set_shadow_state (object, shadow_state);
 265
 266         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 267         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 268
 269         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 270         gl_label_object_set_shadow_color (object, shadow_color_node);
 271         gl_color_node_free (&shadow_color_node);
 272
 273         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 274         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 275
 276         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 277                                            update_editor_from_object_cb,
 278                                            editor);
 279         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 280                                            update_editor_from_move_cb,
 281                                            editor);
 282
 283         gl_debug (DEBUG_VIEW, "END");
 284 }
 285
 286 /*---------------------------------------------------------------------------*/
 287 /* PRIVATE.  editor "changed" callback.                                      */
 288 /*---------------------------------------------------------------------------*/
 289 static void
 290 update_object_from_editor_size_cb (glObjectEditor *editor,
 291                                    glLabelObject  *object)
 292 {
 293         gdouble            w, h;
 294
 295         gl_debug (DEBUG_VIEW, "START");
 296
 297         g_signal_handlers_block_by_func (G_OBJECT(object),
 298                                          update_editor_from_object_cb,
 299                                          editor);
 300         g_signal_handlers_block_by_func (G_OBJECT(object),
 301                                          update_editor_from_move_cb,
 302                                          editor);
 303
 304         gl_object_editor_get_size (editor, &w, &h);
 305
 306         gl_label_object_set_size (object, w, h);
 307
 308         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 309                                            update_editor_from_object_cb,
 310                                            editor);
 311         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 312                                            update_editor_from_move_cb,
 313                                            editor);
 314
 315         gl_debug (DEBUG_VIEW, "END");
 316 }
 317
 318 /*---------------------------------------------------------------------------*/
 319 /* PRIVATE. label object "changed" callback.                                 */
 320 /*---------------------------------------------------------------------------*/
 321 static void
 322 update_editor_from_object_cb (glLabelObject  *object,
 323                               glObjectEditor *editor)
 324 {
 325         gdouble            w, h;
 326         gchar             *font_family;
 327         gdouble            font_size;
 328         PangoWeight        font_weight;
 329         gboolean           font_italic_flag;
 330         glColorNode       *color_node;
 331         PangoAlignment     align;
 332         gdouble            text_line_spacing;
 333         gboolean           auto_shrink;
 334         gboolean           shadow_state;
 335         gdouble            shadow_x, shadow_y;
 336         glColorNode       *shadow_color_node;
 337         gdouble            shadow_opacity;
 338         glMerge           *merge;
 339
 340         gl_debug (DEBUG_VIEW, "START");
 341
 342         gl_label_object_get_size (object, &w, &h);
 343         gl_object_editor_set_size (editor, w, h);
 344         merge = gl_label_get_merge (GL_LABEL(object->parent));
 345
 346         font_family      = gl_label_object_get_font_family (object);
 347         font_size        = gl_label_object_get_font_size (object);
 348         font_weight      = gl_label_object_get_font_weight (object);
 349         font_italic_flag = gl_label_object_get_font_italic_flag (object);
 350         color_node       = gl_label_object_get_text_color (object);
 351         align             = gl_label_object_get_text_alignment (object);
 352         text_line_spacing = gl_label_object_get_text_line_spacing (object);
 353         auto_shrink      = gl_label_text_get_auto_shrink (GL_LABEL_TEXT (object));
 354
 355         gl_object_editor_set_font_family (editor, font_family);
 356         gl_object_editor_set_font_size (editor, font_size);
 357         gl_object_editor_set_font_weight (editor, font_weight);
 358         gl_object_editor_set_font_italic_flag (editor, font_italic_flag);
 359         gl_object_editor_set_text_color (editor, (merge != NULL), color_node);
 360         gl_object_editor_set_text_alignment (editor, align);
 361         gl_object_editor_set_text_line_spacing (editor, text_line_spacing);
 362         gl_object_editor_set_text_auto_shrink (editor, auto_shrink);
 363
 364         gl_color_node_free (&color_node);
 365         g_free (font_family);
 366
 367         shadow_state = gl_label_object_get_shadow_state (object);
 368         gl_object_editor_set_shadow_state (editor, shadow_state);
 369
 370         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 371         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 372
 373         shadow_color_node = gl_label_object_get_shadow_color (object);
 374         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 375         gl_color_node_free (&shadow_color_node);
 376
 377         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 378         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 379
 380         gl_debug (DEBUG_VIEW, "END");
 381 }
 382
 383 /*---------------------------------------------------------------------------*/
 384 /* PRIVATE. label object "moved" callback.                                   */
 385 /*---------------------------------------------------------------------------*/
 386 static void
 387 update_editor_from_move_cb (glLabelObject    *object,
 388                             gdouble           dx,
 389                             gdouble           dy,
 390                             glObjectEditor   *editor)
 391 {
 392         gdouble            x, y;
 393
 394         gl_debug (DEBUG_VIEW, "START");
 395
 396         gl_label_object_get_position (object, &x, &y);
 397         gl_object_editor_set_position (editor, x, y);
 398
 399         gl_debug (DEBUG_VIEW, "END");
 400 }
 401
 402
 403 /*****************************************************************************/
 404 /* Is object at (x,y)?                                                       */
 405 /*****************************************************************************/
 406 static gboolean
 407 object_at (glViewObject  *view_object,
 408            cairo_t       *cr,
 409            gdouble        x,
 410            gdouble        y)
 411 {
 412         glLabelObject    *object;
 413         gdouble           w, h;
 414
 415         object = gl_view_object_get_object (view_object);
 416
 417         gl_label_object_get_size (object, &w, &h);
 418
 419         cairo_rectangle (cr, 0.0, 0.0, w, h);
 420
 421         if (cairo_in_fill (cr, x, y))
 422         {
 423                 return TRUE;
 424         }
 425
 426         return FALSE;
 427 }
 428
 429
 430 /*****************************************************************************/
 431 /* Return apropos cursor for create object mode.                             */
 432 /*****************************************************************************/
 433 GdkCursor *
 434 gl_view_text_get_create_cursor (void)
 435 {
 436         GdkCursor       *cursor = NULL;
 437         GdkPixmap       *pixmap_data, *pixmap_mask;
 438         GdkColor         fg = { 0, 0, 0, 0 };
 439         GdkColor         bg = { 0, 65535, 65535, 65535 };
 440
 441         gl_debug (DEBUG_VIEW, "START");
 442
 443         pixmap_data = gdk_bitmap_create_from_data (NULL,
 444                                                    (gchar *)cursor_text_bits,
 445                                                    cursor_text_width,
 446                                                    cursor_text_height);
 447         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 448                                                    (gchar *)cursor_text_mask_bits,
 449                                                    cursor_text_mask_width,
 450                                                    cursor_text_mask_height);
 451         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 452                                              &bg, cursor_text_x_hot,
 453                                              cursor_text_y_hot);
 454
 455         gl_debug (DEBUG_VIEW, "END");
 456
 457         return cursor;
 458 }
 459
 460 /*****************************************************************************/
 461 /* Object creation handler: button press event.                              */
 462 /*****************************************************************************/
 463 void
 464 gl_view_text_create_button_press_event   (glView *view,
 465                                           gdouble x,
 466                                           gdouble y)
 467 {
 468         GObject             *object;
 469         GList               *lines;
 470         gchar               *family;
 471         glColorNode         *color_node;
 472
 473         gl_view_unselect_all (view);
 474
 475         object = gl_label_text_new (view->label);
 476         color_node = gl_color_node_new_default ();
 477         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 478         family = gl_view_get_default_font_family (view);
 479         gl_label_object_set_font_family (GL_LABEL_OBJECT(object), family);
 480         gl_label_object_set_font_size (GL_LABEL_OBJECT(object),
 481                                        gl_view_get_default_font_size (view));
 482         gl_label_object_set_font_weight (GL_LABEL_OBJECT(object),
 483                                          gl_view_get_default_font_weight (view));
 484         gl_label_object_set_font_italic_flag (GL_LABEL_OBJECT(object),
 485                                               gl_view_get_default_font_italic_flag (view));
 486
 487         color_node->color = gl_color_set_opacity (gl_view_get_default_text_color (view), 0.5);
 488         gl_label_object_set_text_color (GL_LABEL_OBJECT(object),
 489                                                         color_node);
 490         gl_label_object_set_text_alignment (GL_LABEL_OBJECT(object),
 491                                             gl_view_get_default_text_alignment (view));
 492         gl_label_object_set_text_line_spacing (GL_LABEL_OBJECT(object), gl_view_get_default_text_line_spacing (view));
 493
 494         g_free (family);
 495         lines = gl_text_node_lines_new_from_text (_("Text"));
 496         gl_label_text_set_lines (GL_LABEL_TEXT(object), lines);
 497         gl_color_node_free (&color_node);
 498
 499         view->create_object = GL_LABEL_OBJECT (object);
 500         view->create_x0 = x;
 501         view->create_y0 = y;
 502 }
 503
 504 /*****************************************************************************/
 505 /* Object creation handler: motion event.                                    */
 506 /*****************************************************************************/
 507 void
 508 gl_view_text_create_motion_event     (glView *view,
 509                                       gdouble x,
 510                                       gdouble y)
 511 {
 512         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object), x, y);
 513 }
 514
 515 /*****************************************************************************/
 516 /* Object creation handler: button relesase event.                           */
 517 /*****************************************************************************/
 518 void
 519 gl_view_text_create_button_release_event (glView *view,
 520                                           gdouble x,
 521                                           gdouble y)
 522 {
 523         glColorNode         *color_node;
 524
 525         color_node = gl_color_node_new_default ();
 526         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object), x, y);
 527         color_node->color = gl_view_get_default_text_color(view);
 528         gl_label_object_set_text_color (GL_LABEL_OBJECT(view->create_object), color_node);
 529         gl_color_node_free (&color_node);
 530 }
 531