git.sur5r.net Git - glabels/blob - glabels2/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 };
  50
  51 /*========================================================*/
  52 /* Private globals.                                       */
  53 /*========================================================*/
  54
  55
  56 /*========================================================*/
  57 /* Private function prototypes.                           */
  58 /*========================================================*/
  59
  60 static void       gl_view_text_finalize             (GObject          *object);
  61
  62 static GtkWidget *construct_properties_editor       (glViewObject     *view_object);
  63
  64 static void       update_object_from_editor_cb      (glObjectEditor   *editor,
  65                                                      glLabelObject    *object);
  66
  67 static void       update_object_from_editor_size_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 void       update_editor_from_label_cb       (glLabel          *label,
  79                                                      glObjectEditor   *editor);
  80
  81 static gboolean   object_at                         (glViewObject     *view_object,
  82                                                      cairo_t          *cr,
  83                                                      gdouble           x,
  84                                                      gdouble           y);
  85
  86
  87
  88 \f
  89 /*****************************************************************************/
  90 /* Boilerplate object stuff.                                                 */
  91 /*****************************************************************************/
  92 G_DEFINE_TYPE (glViewText, gl_view_text, GL_TYPE_VIEW_OBJECT);
  93
  94
  95 static void
  96 gl_view_text_class_init (glViewTextClass *class)
  97 {
  98         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  99         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
 100
 101         gl_debug (DEBUG_VIEW, "START");
 102
 103         gl_view_text_parent_class = g_type_class_peek_parent (class);
 104
 105         object_class->finalize = gl_view_text_finalize;
 106
 107         view_object_class->construct_editor = construct_properties_editor;
 108         view_object_class->object_at        = object_at;
 109
 110         gl_debug (DEBUG_VIEW, "END");
 111 }
 112
 113 static void
 114 gl_view_text_init (glViewText *view_text)
 115 {
 116         gl_debug (DEBUG_VIEW, "START");
 117
 118         view_text->priv = g_new0 (glViewTextPrivate, 1);
 119
 120         gl_debug (DEBUG_VIEW, "END");
 121 }
 122
 123 static void
 124 gl_view_text_finalize (GObject *object)
 125 {
 126         glViewText *view_text = GL_VIEW_TEXT (object);
 127
 128         gl_debug (DEBUG_VIEW, "START");
 129
 130         g_return_if_fail (object && GL_IS_VIEW_TEXT (object));
 131
 132         g_free (view_text->priv);
 133
 134         G_OBJECT_CLASS (gl_view_text_parent_class)->finalize (object);
 135
 136         gl_debug (DEBUG_VIEW, "END");
 137 }
 138
 139 /*****************************************************************************/
 140 /* NEW text object view.                                                     */
 141 /*****************************************************************************/
 142 glViewObject *
 143 gl_view_text_new (glLabelText *object,
 144                   glView      *view)
 145 {
 146         glViewText         *view_text;
 147
 148         gl_debug (DEBUG_VIEW, "START");
 149
 150         g_return_val_if_fail (object && GL_IS_LABEL_TEXT (object), NULL);
 151         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 152
 153         view_text = g_object_new (gl_view_text_get_type(), NULL);
 154
 155         gl_view_object_set_object (GL_VIEW_OBJECT(view_text),
 156                                    GL_LABEL_OBJECT(object),
 157                                    GL_VIEW_OBJECT_HANDLES_BOX);
 158         gl_view_object_set_view (GL_VIEW_OBJECT(view_text), view);
 159
 160         gl_debug (DEBUG_VIEW, "END");
 161
 162         return GL_VIEW_OBJECT (view_text);
 163 }
 164
 165 /*****************************************************************************/
 166 /* Create a properties dialog for a text object.                             */
 167 /*****************************************************************************/
 168 static GtkWidget *
 169 construct_properties_editor (glViewObject *view_object)
 170 {
 171         GtkWidget          *editor;
 172         glViewText          *view_text = (glViewText *)view_object;
 173         glLabelObject      *object;
 174         GtkTextBuffer      *buffer;
 175
 176         gl_debug (DEBUG_VIEW, "START");
 177
 178         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 179
 180         /* Build editor. */
 181         editor = gl_object_editor_new (GL_STOCK_TEXT, _("Text object properties"),
 182                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 183                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 184                                        GL_OBJECT_EDITOR_SIZE_PAGE,
 185                                        GL_OBJECT_EDITOR_TEXT_PAGE,
 186                                        GL_OBJECT_EDITOR_EDIT_PAGE,
 187                                        0);
 188
 189         buffer = gl_label_text_get_buffer (GL_LABEL_TEXT(object));
 190         gl_object_editor_set_text_buffer (GL_OBJECT_EDITOR(editor), buffer);
 191
 192         /* Update */
 193         update_editor_from_label_cb (object->parent, GL_OBJECT_EDITOR(editor));
 194         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 195         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 196
 197         /* Connect signals. */
 198         g_signal_connect (G_OBJECT (editor), "changed",
 199                           G_CALLBACK(update_object_from_editor_cb), object);
 200         g_signal_connect (G_OBJECT (editor), "size_changed",
 201                           G_CALLBACK(update_object_from_editor_size_cb), object);
 202         g_signal_connect (G_OBJECT (object), "changed",
 203                           G_CALLBACK (update_editor_from_object_cb), editor);
 204         g_signal_connect (G_OBJECT (object), "moved",
 205                           G_CALLBACK (update_editor_from_move_cb), editor);
 206         g_signal_connect (G_OBJECT (object->parent), "size_changed",
 207                           G_CALLBACK (update_editor_from_label_cb), editor);
 208         g_signal_connect (G_OBJECT (object->parent), "merge_changed",
 209                           G_CALLBACK (update_editor_from_label_cb), editor);
 210
 211         gl_debug (DEBUG_VIEW, "END");
 212
 213         return editor;
 214 }
 215
 216 /*---------------------------------------------------------------------------*/
 217 /* PRIVATE.  editor "changed" callback.                                      */
 218 /*---------------------------------------------------------------------------*/
 219 static void
 220 update_object_from_editor_cb (glObjectEditor *editor,
 221                               glLabelObject  *object)
 222 {
 223         gdouble            x, y;
 224         gchar             *font_family;
 225         gdouble            font_size;
 226         PangoWeight        font_weight;
 227         gboolean           font_italic_flag;
 228         glColorNode       *color_node;
 229         PangoAlignment     align;
 230         gdouble            text_line_spacing;
 231         gboolean           auto_shrink;
 232         gboolean           shadow_state;
 233         gdouble            shadow_x, shadow_y;
 234         glColorNode       *shadow_color_node;
 235         gdouble            shadow_opacity;
 236
 237         gl_debug (DEBUG_VIEW, "START");
 238
 239         g_signal_handlers_block_by_func (G_OBJECT(object),
 240                                          update_editor_from_object_cb,
 241                                          editor);
 242         g_signal_handlers_block_by_func (G_OBJECT(object),
 243                                          update_editor_from_move_cb,
 244                                          editor);
 245
 246         gl_object_editor_get_position (editor, &x, &y);
 247         font_family = gl_object_editor_get_font_family (editor);
 248         font_size = gl_object_editor_get_font_size (editor);
 249         font_weight = gl_object_editor_get_font_weight (editor);
 250         font_italic_flag = gl_object_editor_get_font_italic_flag (editor);
 251         color_node = gl_object_editor_get_text_color (editor);
 252         align = gl_object_editor_get_text_alignment (editor);
 253         text_line_spacing = gl_object_editor_get_text_line_spacing (editor);
 254         auto_shrink = gl_object_editor_get_text_auto_shrink (editor);
 255
 256         gl_label_object_set_position (object, x, y);
 257         gl_label_object_set_font_family (object, font_family);
 258         gl_label_object_set_font_size (object, font_size);
 259         gl_label_object_set_font_weight (object, font_weight);
 260         gl_label_object_set_font_italic_flag (object, font_italic_flag);
 261         gl_label_object_set_text_color (object, color_node);
 262         gl_label_object_set_text_alignment (object, align);
 263         gl_label_object_set_text_line_spacing (object, text_line_spacing);
 264         gl_label_text_set_auto_shrink (GL_LABEL_TEXT (object), auto_shrink);
 265
 266         gl_color_node_free (&color_node);
 267         g_free (font_family);
 268
 269         shadow_state = gl_object_editor_get_shadow_state (editor);
 270         gl_label_object_set_shadow_state (object, shadow_state);
 271
 272         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 273         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 274
 275         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 276         gl_label_object_set_shadow_color (object, shadow_color_node);
 277         gl_color_node_free (&shadow_color_node);
 278
 279         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 280         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 281
 282         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 283                                            update_editor_from_object_cb,
 284                                            editor);
 285         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 286                                            update_editor_from_move_cb,
 287                                            editor);
 288
 289         gl_debug (DEBUG_VIEW, "END");
 290 }
 291
 292 /*---------------------------------------------------------------------------*/
 293 /* PRIVATE.  editor "changed" callback.                                      */
 294 /*---------------------------------------------------------------------------*/
 295 static void
 296 update_object_from_editor_size_cb (glObjectEditor *editor,
 297                                    glLabelObject  *object)
 298 {
 299         gdouble            w, h;
 300
 301         gl_debug (DEBUG_VIEW, "START");
 302
 303         g_signal_handlers_block_by_func (G_OBJECT(object),
 304                                          update_editor_from_object_cb,
 305                                          editor);
 306         g_signal_handlers_block_by_func (G_OBJECT(object),
 307                                          update_editor_from_move_cb,
 308                                          editor);
 309
 310         gl_object_editor_get_size (editor, &w, &h);
 311
 312         gl_label_object_set_size (object, w, h);
 313
 314         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 315                                            update_editor_from_object_cb,
 316                                            editor);
 317         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 318                                            update_editor_from_move_cb,
 319                                            editor);
 320
 321         gl_debug (DEBUG_VIEW, "END");
 322 }
 323
 324 /*---------------------------------------------------------------------------*/
 325 /* PRIVATE. label object "changed" callback.                                 */
 326 /*---------------------------------------------------------------------------*/
 327 static void
 328 update_editor_from_object_cb (glLabelObject  *object,
 329                               glObjectEditor *editor)
 330 {
 331         gdouble            w, h;
 332         gchar             *font_family;
 333         gdouble            font_size;
 334         PangoWeight        font_weight;
 335         gboolean           font_italic_flag;
 336         glColorNode       *color_node;
 337         PangoAlignment     align;
 338         gdouble            text_line_spacing;
 339         gboolean           auto_shrink;
 340         gboolean           shadow_state;
 341         gdouble            shadow_x, shadow_y;
 342         glColorNode       *shadow_color_node;
 343         gdouble            shadow_opacity;
 344         glMerge           *merge;
 345
 346         gl_debug (DEBUG_VIEW, "START");
 347
 348         gl_label_object_get_size (object, &w, &h);
 349         gl_object_editor_set_size (editor, w, h);
 350         merge = gl_label_get_merge (GL_LABEL(object->parent));
 351
 352         font_family      = gl_label_object_get_font_family (object);
 353         font_size        = gl_label_object_get_font_size (object);
 354         font_weight      = gl_label_object_get_font_weight (object);
 355         font_italic_flag = gl_label_object_get_font_italic_flag (object);
 356         color_node       = gl_label_object_get_text_color (object);
 357         align             = gl_label_object_get_text_alignment (object);
 358         text_line_spacing = gl_label_object_get_text_line_spacing (object);
 359         auto_shrink      = gl_label_text_get_auto_shrink (GL_LABEL_TEXT (object));
 360
 361         gl_object_editor_set_font_family (editor, font_family);
 362         gl_object_editor_set_font_size (editor, font_size);
 363         gl_object_editor_set_font_weight (editor, font_weight);
 364         gl_object_editor_set_font_italic_flag (editor, font_italic_flag);
 365         gl_object_editor_set_text_color (editor, (merge != NULL), color_node);
 366         gl_object_editor_set_text_alignment (editor, align);
 367         gl_object_editor_set_text_line_spacing (editor, text_line_spacing);
 368         gl_object_editor_set_text_auto_shrink (editor, auto_shrink);
 369
 370         gl_color_node_free (&color_node);
 371         g_free (font_family);
 372
 373         shadow_state = gl_label_object_get_shadow_state (object);
 374         gl_object_editor_set_shadow_state (editor, shadow_state);
 375
 376         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 377         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 378
 379         shadow_color_node = gl_label_object_get_shadow_color (object);
 380         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 381         gl_color_node_free (&shadow_color_node);
 382
 383         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 384         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 385
 386         gl_debug (DEBUG_VIEW, "END");
 387 }
 388
 389 /*---------------------------------------------------------------------------*/
 390 /* PRIVATE. label object "moved" callback.                                   */
 391 /*---------------------------------------------------------------------------*/
 392 static void
 393 update_editor_from_move_cb (glLabelObject    *object,
 394                             gdouble           dx,
 395                             gdouble           dy,
 396                             glObjectEditor   *editor)
 397 {
 398         gdouble            x, y;
 399
 400         gl_debug (DEBUG_VIEW, "START");
 401
 402         gl_label_object_get_position (object, &x, &y);
 403         gl_object_editor_set_position (editor, x, y);
 404
 405         gl_debug (DEBUG_VIEW, "END");
 406 }
 407
 408 /*---------------------------------------------------------------------------*/
 409 /* PRIVATE. label "changed" callback.                                        */
 410 /*---------------------------------------------------------------------------*/
 411 static void
 412 update_editor_from_label_cb (glLabel        *label,
 413                              glObjectEditor *editor)
 414 {
 415         gdouble            label_width, label_height;
 416         glMerge                    *merge;
 417
 418         gl_debug (DEBUG_VIEW, "START");
 419
 420         gl_label_get_size (label, &label_width, &label_height);
 421         gl_object_editor_set_max_position (GL_OBJECT_EDITOR (editor),
 422                                            label_width, label_height);
 423         gl_object_editor_set_max_size (GL_OBJECT_EDITOR (editor),
 424                                        label_width, label_height);
 425         gl_object_editor_set_max_shadow_offset (GL_OBJECT_EDITOR (editor),
 426                                                 label_width, label_height);
 427
 428         merge = gl_label_get_merge (label);
 429         gl_object_editor_set_key_names (editor, merge);
 430
 431         gl_debug (DEBUG_VIEW, "END");
 432 }
 433
 434 /*****************************************************************************/
 435 /* Is object at (x,y)?                                                       */
 436 /*****************************************************************************/
 437 static gboolean
 438 object_at (glViewObject  *view_object,
 439            cairo_t       *cr,
 440            gdouble        x,
 441            gdouble        y)
 442 {
 443         glLabelObject    *object;
 444         gdouble           w, h;
 445
 446         object = gl_view_object_get_object (view_object);
 447
 448         gl_label_object_get_size (object, &w, &h);
 449
 450         cairo_rectangle (cr, 0.0, 0.0, w, h);
 451
 452         if (cairo_in_fill (cr, x, y))
 453         {
 454                 return TRUE;
 455         }
 456
 457         return FALSE;
 458 }
 459
 460
 461 /*****************************************************************************/
 462 /* Return apropos cursor for create object mode.                             */
 463 /*****************************************************************************/
 464 GdkCursor *
 465 gl_view_text_get_create_cursor (void)
 466 {
 467         GdkCursor       *cursor = NULL;
 468         GdkPixmap       *pixmap_data, *pixmap_mask;
 469         GdkColor         fg = { 0, 0, 0, 0 };
 470         GdkColor         bg = { 0, 65535, 65535, 65535 };
 471
 472         gl_debug (DEBUG_VIEW, "START");
 473
 474         pixmap_data = gdk_bitmap_create_from_data (NULL,
 475                                                    (gchar *)cursor_text_bits,
 476                                                    cursor_text_width,
 477                                                    cursor_text_height);
 478         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 479                                                    (gchar *)cursor_text_mask_bits,
 480                                                    cursor_text_mask_width,
 481                                                    cursor_text_mask_height);
 482         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 483                                              &bg, cursor_text_x_hot,
 484                                              cursor_text_y_hot);
 485
 486         gl_debug (DEBUG_VIEW, "END");
 487
 488         return cursor;
 489 }
 490
 491 /*****************************************************************************/
 492 /* Object creation handler: button press event.                              */
 493 /*****************************************************************************/
 494 void
 495 gl_view_text_create_button_press_event   (glView *view,
 496                                           gdouble x,
 497                                           gdouble y)
 498 {
 499         GObject             *object;
 500         glViewObject        *view_text;
 501         GList               *lines;
 502         gchar               *family;
 503         glColorNode         *color_node;
 504
 505         gl_view_unselect_all (view);
 506
 507         object = gl_label_text_new (view->label);
 508         color_node = gl_color_node_new_default ();
 509         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 510         family = gl_view_get_default_font_family (view);
 511         gl_label_object_set_font_family (GL_LABEL_OBJECT(object), family);
 512         gl_label_object_set_font_size (GL_LABEL_OBJECT(object),
 513                                        gl_view_get_default_font_size (view));
 514         gl_label_object_set_font_weight (GL_LABEL_OBJECT(object),
 515                                          gl_view_get_default_font_weight (view));
 516         gl_label_object_set_font_italic_flag (GL_LABEL_OBJECT(object),
 517                                               gl_view_get_default_font_italic_flag (view));
 518
 519         color_node->color = gl_color_set_opacity (gl_view_get_default_text_color (view), 0.5);
 520         gl_label_object_set_text_color (GL_LABEL_OBJECT(object),
 521                                                         color_node);
 522         gl_label_object_set_text_alignment (GL_LABEL_OBJECT(object),
 523                                             gl_view_get_default_text_alignment (view));
 524         gl_label_object_set_text_line_spacing (GL_LABEL_OBJECT(object), gl_view_get_default_text_line_spacing (view));
 525
 526         g_free (family);
 527         lines = gl_text_node_lines_new_from_text (_("Text"));
 528         gl_label_text_set_lines (GL_LABEL_TEXT(object), lines);
 529         view_text = gl_view_text_new (GL_LABEL_TEXT(object), view);
 530         gl_color_node_free (&color_node);
 531
 532         view->create_object = GL_LABEL_OBJECT (object);
 533         view->create_x0 = x;
 534         view->create_y0 = y;
 535 }
 536
 537 /*****************************************************************************/
 538 /* Object creation handler: motion event.                                    */
 539 /*****************************************************************************/
 540 void
 541 gl_view_text_create_motion_event     (glView *view,
 542                                       gdouble x,
 543                                       gdouble y)
 544 {
 545         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object), x, y);
 546 }
 547
 548 /*****************************************************************************/
 549 /* Object creation handler: button relesase event.                           */
 550 /*****************************************************************************/
 551 void
 552 gl_view_text_create_button_release_event (glView *view,
 553                                           gdouble x,
 554                                           gdouble y)
 555 {
 556         glColorNode         *color_node;
 557
 558         color_node = gl_color_node_new_default ();
 559         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object), x, y);
 560         color_node->color = gl_view_get_default_text_color(view);
 561         gl_label_object_set_text_color (GL_LABEL_OBJECT(view->create_object), color_node);
 562         gl_color_node_free (&color_node);
 563 }
 564