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 gboolean   object_at                         (glViewObject     *view_object,
  79                                                      cairo_t          *cr,
  80                                                      gdouble           x,
  81                                                      gdouble           y);
  82
  83
  84
  85 \f
  86 /*****************************************************************************/
  87 /* Boilerplate object stuff.                                                 */
  88 /*****************************************************************************/
  89 G_DEFINE_TYPE (glViewText, gl_view_text, GL_TYPE_VIEW_OBJECT);
  90
  91
  92 static void
  93 gl_view_text_class_init (glViewTextClass *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_text_parent_class = g_type_class_peek_parent (class);
 101
 102         object_class->finalize = gl_view_text_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_text_init (glViewText *view_text)
 112 {
 113         gl_debug (DEBUG_VIEW, "START");
 114
 115         view_text->priv = g_new0 (glViewTextPrivate, 1);
 116
 117         gl_debug (DEBUG_VIEW, "END");
 118 }
 119
 120 static void
 121 gl_view_text_finalize (GObject *object)
 122 {
 123         glViewText *view_text = GL_VIEW_TEXT (object);
 124
 125         gl_debug (DEBUG_VIEW, "START");
 126
 127         g_return_if_fail (object && GL_IS_VIEW_TEXT (object));
 128
 129         g_free (view_text->priv);
 130
 131         G_OBJECT_CLASS (gl_view_text_parent_class)->finalize (object);
 132
 133         gl_debug (DEBUG_VIEW, "END");
 134 }
 135
 136 /*****************************************************************************/
 137 /* NEW text object view.                                                     */
 138 /*****************************************************************************/
 139 glViewObject *
 140 gl_view_text_new (glLabelText *object,
 141                   glView      *view)
 142 {
 143         glViewText         *view_text;
 144
 145         gl_debug (DEBUG_VIEW, "START");
 146
 147         g_return_val_if_fail (object && GL_IS_LABEL_TEXT (object), NULL);
 148         g_return_val_if_fail (view && GL_IS_VIEW (view), NULL);
 149
 150         view_text = g_object_new (gl_view_text_get_type(), NULL);
 151
 152         gl_view_object_set_object (GL_VIEW_OBJECT(view_text),
 153                                    GL_LABEL_OBJECT(object),
 154                                    GL_VIEW_OBJECT_HANDLES_BOX);
 155         gl_view_object_set_view (GL_VIEW_OBJECT(view_text), view);
 156
 157         gl_debug (DEBUG_VIEW, "END");
 158
 159         return GL_VIEW_OBJECT (view_text);
 160 }
 161
 162 /*****************************************************************************/
 163 /* Create a properties dialog for a text object.                             */
 164 /*****************************************************************************/
 165 static GtkWidget *
 166 construct_properties_editor (glViewObject *view_object)
 167 {
 168         GtkWidget          *editor;
 169         glViewText          *view_text = (glViewText *)view_object;
 170         glLabelObject      *object;
 171         GtkTextBuffer      *buffer;
 172
 173         gl_debug (DEBUG_VIEW, "START");
 174
 175         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 176
 177         /* Build editor. */
 178         editor = gl_object_editor_new (GL_STOCK_TEXT, _("Text object properties"),
 179                                        object->parent,
 180                                        GL_OBJECT_EDITOR_SHADOW_PAGE,
 181                                        GL_OBJECT_EDITOR_POSITION_PAGE,
 182                                        GL_OBJECT_EDITOR_SIZE_PAGE,
 183                                        GL_OBJECT_EDITOR_TEXT_PAGE,
 184                                        GL_OBJECT_EDITOR_EDIT_PAGE,
 185                                        0);
 186
 187         buffer = gl_label_text_get_buffer (GL_LABEL_TEXT(object));
 188         gl_object_editor_set_text_buffer (GL_OBJECT_EDITOR(editor), buffer);
 189
 190         /* Update */
 191         update_editor_from_object_cb (object, GL_OBJECT_EDITOR(editor));
 192         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 193
 194         /* Connect signals. */
 195         g_signal_connect (G_OBJECT (editor), "changed",
 196                           G_CALLBACK(update_object_from_editor_cb), object);
 197         g_signal_connect (G_OBJECT (editor), "size_changed",
 198                           G_CALLBACK(update_object_from_editor_size_cb), object);
 199         g_signal_connect (G_OBJECT (object), "changed",
 200                           G_CALLBACK (update_editor_from_object_cb), editor);
 201         g_signal_connect (G_OBJECT (object), "moved",
 202                           G_CALLBACK (update_editor_from_move_cb), editor);
 203
 204         gl_debug (DEBUG_VIEW, "END");
 205
 206         return editor;
 207 }
 208
 209 /*---------------------------------------------------------------------------*/
 210 /* PRIVATE.  editor "changed" callback.                                      */
 211 /*---------------------------------------------------------------------------*/
 212 static void
 213 update_object_from_editor_cb (glObjectEditor *editor,
 214                               glLabelObject  *object)
 215 {
 216         gdouble            x, y;
 217         gchar             *font_family;
 218         gdouble            font_size;
 219         PangoWeight        font_weight;
 220         gboolean           font_italic_flag;
 221         glColorNode       *color_node;
 222         PangoAlignment     align;
 223         gdouble            text_line_spacing;
 224         gboolean           auto_shrink;
 225         gboolean           shadow_state;
 226         gdouble            shadow_x, shadow_y;
 227         glColorNode       *shadow_color_node;
 228         gdouble            shadow_opacity;
 229
 230         gl_debug (DEBUG_VIEW, "START");
 231
 232         g_signal_handlers_block_by_func (G_OBJECT(object),
 233                                          update_editor_from_object_cb,
 234                                          editor);
 235         g_signal_handlers_block_by_func (G_OBJECT(object),
 236                                          update_editor_from_move_cb,
 237                                          editor);
 238
 239         gl_object_editor_get_position (editor, &x, &y);
 240         font_family = gl_object_editor_get_font_family (editor);
 241         font_size = gl_object_editor_get_font_size (editor);
 242         font_weight = gl_object_editor_get_font_weight (editor);
 243         font_italic_flag = gl_object_editor_get_font_italic_flag (editor);
 244         color_node = gl_object_editor_get_text_color (editor);
 245         align = gl_object_editor_get_text_alignment (editor);
 246         text_line_spacing = gl_object_editor_get_text_line_spacing (editor);
 247         auto_shrink = gl_object_editor_get_text_auto_shrink (editor);
 248
 249         gl_label_object_set_position (object, x, y);
 250         gl_label_object_set_font_family (object, font_family);
 251         gl_label_object_set_font_size (object, font_size);
 252         gl_label_object_set_font_weight (object, font_weight);
 253         gl_label_object_set_font_italic_flag (object, font_italic_flag);
 254         gl_label_object_set_text_color (object, color_node);
 255         gl_label_object_set_text_alignment (object, align);
 256         gl_label_object_set_text_line_spacing (object, text_line_spacing);
 257         gl_label_text_set_auto_shrink (GL_LABEL_TEXT (object), auto_shrink);
 258
 259         gl_color_node_free (&color_node);
 260         g_free (font_family);
 261
 262         shadow_state = gl_object_editor_get_shadow_state (editor);
 263         gl_label_object_set_shadow_state (object, shadow_state);
 264
 265         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 266         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 267
 268         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 269         gl_label_object_set_shadow_color (object, shadow_color_node);
 270         gl_color_node_free (&shadow_color_node);
 271
 272         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 273         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 274
 275         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 276                                            update_editor_from_object_cb,
 277                                            editor);
 278         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 279                                            update_editor_from_move_cb,
 280                                            editor);
 281
 282         gl_debug (DEBUG_VIEW, "END");
 283 }
 284
 285 /*---------------------------------------------------------------------------*/
 286 /* PRIVATE.  editor "changed" callback.                                      */
 287 /*---------------------------------------------------------------------------*/
 288 static void
 289 update_object_from_editor_size_cb (glObjectEditor *editor,
 290                                    glLabelObject  *object)
 291 {
 292         gdouble            w, h;
 293
 294         gl_debug (DEBUG_VIEW, "START");
 295
 296         g_signal_handlers_block_by_func (G_OBJECT(object),
 297                                          update_editor_from_object_cb,
 298                                          editor);
 299         g_signal_handlers_block_by_func (G_OBJECT(object),
 300                                          update_editor_from_move_cb,
 301                                          editor);
 302
 303         gl_object_editor_get_size (editor, &w, &h);
 304
 305         gl_label_object_set_size (object, w, h);
 306
 307         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 308                                            update_editor_from_object_cb,
 309                                            editor);
 310         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 311                                            update_editor_from_move_cb,
 312                                            editor);
 313
 314         gl_debug (DEBUG_VIEW, "END");
 315 }
 316
 317 /*---------------------------------------------------------------------------*/
 318 /* PRIVATE. label object "changed" callback.                                 */
 319 /*---------------------------------------------------------------------------*/
 320 static void
 321 update_editor_from_object_cb (glLabelObject  *object,
 322                               glObjectEditor *editor)
 323 {
 324         gdouble            w, h;
 325         gchar             *font_family;
 326         gdouble            font_size;
 327         PangoWeight        font_weight;
 328         gboolean           font_italic_flag;
 329         glColorNode       *color_node;
 330         PangoAlignment     align;
 331         gdouble            text_line_spacing;
 332         gboolean           auto_shrink;
 333         gboolean           shadow_state;
 334         gdouble            shadow_x, shadow_y;
 335         glColorNode       *shadow_color_node;
 336         gdouble            shadow_opacity;
 337         glMerge           *merge;
 338
 339         gl_debug (DEBUG_VIEW, "START");
 340
 341         gl_label_object_get_size (object, &w, &h);
 342         gl_object_editor_set_size (editor, w, h);
 343         merge = gl_label_get_merge (GL_LABEL(object->parent));
 344
 345         font_family      = gl_label_object_get_font_family (object);
 346         font_size        = gl_label_object_get_font_size (object);
 347         font_weight      = gl_label_object_get_font_weight (object);
 348         font_italic_flag = gl_label_object_get_font_italic_flag (object);
 349         color_node       = gl_label_object_get_text_color (object);
 350         align             = gl_label_object_get_text_alignment (object);
 351         text_line_spacing = gl_label_object_get_text_line_spacing (object);
 352         auto_shrink      = gl_label_text_get_auto_shrink (GL_LABEL_TEXT (object));
 353
 354         gl_object_editor_set_font_family (editor, font_family);
 355         gl_object_editor_set_font_size (editor, font_size);
 356         gl_object_editor_set_font_weight (editor, font_weight);
 357         gl_object_editor_set_font_italic_flag (editor, font_italic_flag);
 358         gl_object_editor_set_text_color (editor, (merge != NULL), color_node);
 359         gl_object_editor_set_text_alignment (editor, align);
 360         gl_object_editor_set_text_line_spacing (editor, text_line_spacing);
 361         gl_object_editor_set_text_auto_shrink (editor, auto_shrink);
 362
 363         gl_color_node_free (&color_node);
 364         g_free (font_family);
 365
 366         shadow_state = gl_label_object_get_shadow_state (object);
 367         gl_object_editor_set_shadow_state (editor, shadow_state);
 368
 369         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 370         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 371
 372         shadow_color_node = gl_label_object_get_shadow_color (object);
 373         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 374         gl_color_node_free (&shadow_color_node);
 375
 376         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 377         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 378
 379         gl_debug (DEBUG_VIEW, "END");
 380 }
 381
 382 /*---------------------------------------------------------------------------*/
 383 /* PRIVATE. label object "moved" callback.                                   */
 384 /*---------------------------------------------------------------------------*/
 385 static void
 386 update_editor_from_move_cb (glLabelObject    *object,
 387                             gdouble           dx,
 388                             gdouble           dy,
 389                             glObjectEditor   *editor)
 390 {
 391         gdouble            x, y;
 392
 393         gl_debug (DEBUG_VIEW, "START");
 394
 395         gl_label_object_get_position (object, &x, &y);
 396         gl_object_editor_set_position (editor, x, y);
 397
 398         gl_debug (DEBUG_VIEW, "END");
 399 }
 400
 401
 402 /*****************************************************************************/
 403 /* Is object at (x,y)?                                                       */
 404 /*****************************************************************************/
 405 static gboolean
 406 object_at (glViewObject  *view_object,
 407            cairo_t       *cr,
 408            gdouble        x,
 409            gdouble        y)
 410 {
 411         glLabelObject    *object;
 412         gdouble           w, h;
 413
 414         object = gl_view_object_get_object (view_object);
 415
 416         gl_label_object_get_size (object, &w, &h);
 417
 418         cairo_rectangle (cr, 0.0, 0.0, w, h);
 419
 420         if (cairo_in_fill (cr, x, y))
 421         {
 422                 return TRUE;
 423         }
 424
 425         return FALSE;
 426 }
 427
 428
 429 /*****************************************************************************/
 430 /* Return apropos cursor for create object mode.                             */
 431 /*****************************************************************************/
 432 GdkCursor *
 433 gl_view_text_get_create_cursor (void)
 434 {
 435         GdkCursor       *cursor = NULL;
 436         GdkPixmap       *pixmap_data, *pixmap_mask;
 437         GdkColor         fg = { 0, 0, 0, 0 };
 438         GdkColor         bg = { 0, 65535, 65535, 65535 };
 439
 440         gl_debug (DEBUG_VIEW, "START");
 441
 442         pixmap_data = gdk_bitmap_create_from_data (NULL,
 443                                                    (gchar *)cursor_text_bits,
 444                                                    cursor_text_width,
 445                                                    cursor_text_height);
 446         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 447                                                    (gchar *)cursor_text_mask_bits,
 448                                                    cursor_text_mask_width,
 449                                                    cursor_text_mask_height);
 450         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 451                                              &bg, cursor_text_x_hot,
 452                                              cursor_text_y_hot);
 453
 454         gl_debug (DEBUG_VIEW, "END");
 455
 456         return cursor;
 457 }
 458
 459 /*****************************************************************************/
 460 /* Object creation handler: button press event.                              */
 461 /*****************************************************************************/
 462 void
 463 gl_view_text_create_button_press_event   (glView *view,
 464                                           gdouble x,
 465                                           gdouble y)
 466 {
 467         GObject             *object;
 468         glViewObject        *view_text;
 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