git.sur5r.net Git - glabels/blob - src/view-text.c

   1 /*
   2  *  view-text.c
   3  *  Copyright (C) 2001-2009  Jim Evins <evins@snaught.com>.
   4  *
   5  *  This file is part of gLabels.
   6  *
   7  *  gLabels is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  gLabels is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with gLabels.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22
  23 #include "view-text.h"
  24
  25 #include <glib/gi18n.h>
  26 #include <glib.h>
  27
  28 #include "color.h"
  29 #include "object-editor.h"
  30 #include "stock.h"
  31
  32 #include "pixmaps/cursor_text.xbm"
  33 #include "pixmaps/cursor_text_mask.xbm"
  34
  35 #include "debug.h"
  36
  37
  38 /*========================================================*/
  39 /* Private macros and constants.                          */
  40 /*========================================================*/
  41
  42
  43 /*========================================================*/
  44 /* Private types.                                         */
  45 /*========================================================*/
  46
  47 struct _glViewTextPrivate {
  48 };
  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 /* Boilerplate object stuff.                                                 */
  86 /*****************************************************************************/
  87 G_DEFINE_TYPE (glViewText, gl_view_text, GL_TYPE_VIEW_OBJECT);
  88
  89
  90 static void
  91 gl_view_text_class_init (glViewTextClass *class)
  92 {
  93         GObjectClass      *object_class      = G_OBJECT_CLASS (class);
  94         glViewObjectClass *view_object_class = GL_VIEW_OBJECT_CLASS (class);
  95
  96         gl_debug (DEBUG_VIEW, "START");
  97
  98         gl_view_text_parent_class = g_type_class_peek_parent (class);
  99
 100         object_class->finalize = gl_view_text_finalize;
 101
 102         view_object_class->construct_editor = construct_properties_editor;
 103         view_object_class->object_at        = object_at;
 104
 105         gl_debug (DEBUG_VIEW, "END");
 106 }
 107
 108
 109 static void
 110 gl_view_text_init (glViewText *view_text)
 111 {
 112         gl_debug (DEBUG_VIEW, "START");
 113
 114         view_text->priv = g_new0 (glViewTextPrivate, 1);
 115
 116         gl_debug (DEBUG_VIEW, "END");
 117 }
 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 /*****************************************************************************/
 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 /*****************************************************************************/
 165 /* Create a properties dialog for a text object.                             */
 166 /*****************************************************************************/
 167 static GtkWidget *
 168 construct_properties_editor (glViewObject *view_object)
 169 {
 170         GtkWidget          *editor;
 171         glViewText          *view_text = (glViewText *)view_object;
 172         glLabelObject      *object;
 173         GtkTextBuffer      *buffer;
 174
 175         gl_debug (DEBUG_VIEW, "START");
 176
 177         object = gl_view_object_get_object (GL_VIEW_OBJECT(view_text));
 178
 179         /* Build editor. */
 180         editor = gl_object_editor_new (GL_STOCK_TEXT, _("Text object properties"),
 181                                        object->parent,
 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_object_cb (object, GL_OBJECT_EDITOR(editor));
 194         update_editor_from_move_cb (object, 0, 0, GL_OBJECT_EDITOR(editor));
 195
 196         /* Connect signals. */
 197         g_signal_connect (G_OBJECT (editor), "changed",
 198                           G_CALLBACK(update_object_from_editor_cb), object);
 199         g_signal_connect (G_OBJECT (editor), "size_changed",
 200                           G_CALLBACK(update_object_from_editor_size_cb), object);
 201         g_signal_connect (G_OBJECT (object), "changed",
 202                           G_CALLBACK (update_editor_from_object_cb), editor);
 203         g_signal_connect (G_OBJECT (object), "moved",
 204                           G_CALLBACK (update_editor_from_move_cb), editor);
 205
 206         gl_debug (DEBUG_VIEW, "END");
 207
 208         return editor;
 209 }
 210
 211
 212 /*---------------------------------------------------------------------------*/
 213 /* PRIVATE.  editor "changed" callback.                                      */
 214 /*---------------------------------------------------------------------------*/
 215 static void
 216 update_object_from_editor_cb (glObjectEditor *editor,
 217                               glLabelObject  *object)
 218 {
 219         gdouble            x, y;
 220         gchar             *font_family;
 221         gdouble            font_size;
 222         PangoWeight        font_weight;
 223         gboolean           font_italic_flag;
 224         glColorNode       *color_node;
 225         PangoAlignment     align;
 226         gdouble            text_line_spacing;
 227         gboolean           auto_shrink;
 228         gboolean           shadow_state;
 229         gdouble            shadow_x, shadow_y;
 230         glColorNode       *shadow_color_node;
 231         gdouble            shadow_opacity;
 232
 233         gl_debug (DEBUG_VIEW, "START");
 234
 235         g_signal_handlers_block_by_func (G_OBJECT(object),
 236                                          update_editor_from_object_cb,
 237                                          editor);
 238         g_signal_handlers_block_by_func (G_OBJECT(object),
 239                                          update_editor_from_move_cb,
 240                                          editor);
 241
 242         gl_object_editor_get_position (editor, &x, &y);
 243         font_family = gl_object_editor_get_font_family (editor);
 244         font_size = gl_object_editor_get_font_size (editor);
 245         font_weight = gl_object_editor_get_font_weight (editor);
 246         font_italic_flag = gl_object_editor_get_font_italic_flag (editor);
 247         color_node = gl_object_editor_get_text_color (editor);
 248         align = gl_object_editor_get_text_alignment (editor);
 249         text_line_spacing = gl_object_editor_get_text_line_spacing (editor);
 250         auto_shrink = gl_object_editor_get_text_auto_shrink (editor);
 251
 252         gl_label_object_set_position (object, x, y);
 253         gl_label_object_set_font_family (object, font_family);
 254         gl_label_object_set_font_size (object, font_size);
 255         gl_label_object_set_font_weight (object, font_weight);
 256         gl_label_object_set_font_italic_flag (object, font_italic_flag);
 257         gl_label_object_set_text_color (object, color_node);
 258         gl_label_object_set_text_alignment (object, align);
 259         gl_label_object_set_text_line_spacing (object, text_line_spacing);
 260         gl_label_text_set_auto_shrink (GL_LABEL_TEXT (object), auto_shrink);
 261
 262         gl_color_node_free (&color_node);
 263         g_free (font_family);
 264
 265         shadow_state = gl_object_editor_get_shadow_state (editor);
 266         gl_label_object_set_shadow_state (object, shadow_state);
 267
 268         gl_object_editor_get_shadow_offset (editor, &shadow_x, &shadow_y);
 269         gl_label_object_set_shadow_offset (object, shadow_x, shadow_y);
 270
 271         shadow_color_node = gl_object_editor_get_shadow_color (editor);
 272         gl_label_object_set_shadow_color (object, shadow_color_node);
 273         gl_color_node_free (&shadow_color_node);
 274
 275         shadow_opacity = gl_object_editor_get_shadow_opacity (editor);
 276         gl_label_object_set_shadow_opacity (object, shadow_opacity);
 277
 278         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 279                                            update_editor_from_object_cb,
 280                                            editor);
 281         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 282                                            update_editor_from_move_cb,
 283                                            editor);
 284
 285         gl_debug (DEBUG_VIEW, "END");
 286 }
 287
 288
 289 /*---------------------------------------------------------------------------*/
 290 /* PRIVATE.  editor "changed" callback.                                      */
 291 /*---------------------------------------------------------------------------*/
 292 static void
 293 update_object_from_editor_size_cb (glObjectEditor *editor,
 294                                    glLabelObject  *object)
 295 {
 296         gdouble            w, h;
 297
 298         gl_debug (DEBUG_VIEW, "START");
 299
 300         g_signal_handlers_block_by_func (G_OBJECT(object),
 301                                          update_editor_from_object_cb,
 302                                          editor);
 303         g_signal_handlers_block_by_func (G_OBJECT(object),
 304                                          update_editor_from_move_cb,
 305                                          editor);
 306
 307         gl_object_editor_get_size (editor, &w, &h);
 308
 309         gl_label_object_set_size (object, w, h);
 310
 311         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 312                                            update_editor_from_object_cb,
 313                                            editor);
 314         g_signal_handlers_unblock_by_func (G_OBJECT(object),
 315                                            update_editor_from_move_cb,
 316                                            editor);
 317
 318         gl_debug (DEBUG_VIEW, "END");
 319 }
 320
 321
 322 /*---------------------------------------------------------------------------*/
 323 /* PRIVATE. label object "changed" callback.                                 */
 324 /*---------------------------------------------------------------------------*/
 325 static void
 326 update_editor_from_object_cb (glLabelObject  *object,
 327                               glObjectEditor *editor)
 328 {
 329         gdouble            w, h;
 330         gchar             *font_family;
 331         gdouble            font_size;
 332         PangoWeight        font_weight;
 333         gboolean           font_italic_flag;
 334         glColorNode       *color_node;
 335         PangoAlignment     align;
 336         gdouble            text_line_spacing;
 337         gboolean           auto_shrink;
 338         gboolean           shadow_state;
 339         gdouble            shadow_x, shadow_y;
 340         glColorNode       *shadow_color_node;
 341         gdouble            shadow_opacity;
 342         glMerge           *merge;
 343
 344         gl_debug (DEBUG_VIEW, "START");
 345
 346         gl_label_object_get_size (object, &w, &h);
 347         gl_object_editor_set_size (editor, w, h);
 348         merge = gl_label_get_merge (GL_LABEL(object->parent));
 349
 350         font_family      = gl_label_object_get_font_family (object);
 351         font_size        = gl_label_object_get_font_size (object);
 352         font_weight      = gl_label_object_get_font_weight (object);
 353         font_italic_flag = gl_label_object_get_font_italic_flag (object);
 354         color_node       = gl_label_object_get_text_color (object);
 355         align             = gl_label_object_get_text_alignment (object);
 356         text_line_spacing = gl_label_object_get_text_line_spacing (object);
 357         auto_shrink      = gl_label_text_get_auto_shrink (GL_LABEL_TEXT (object));
 358
 359         gl_object_editor_set_font_family (editor, font_family);
 360         gl_object_editor_set_font_size (editor, font_size);
 361         gl_object_editor_set_font_weight (editor, font_weight);
 362         gl_object_editor_set_font_italic_flag (editor, font_italic_flag);
 363         gl_object_editor_set_text_color (editor, (merge != NULL), color_node);
 364         gl_object_editor_set_text_alignment (editor, align);
 365         gl_object_editor_set_text_line_spacing (editor, text_line_spacing);
 366         gl_object_editor_set_text_auto_shrink (editor, auto_shrink);
 367
 368         gl_color_node_free (&color_node);
 369         g_free (font_family);
 370
 371         shadow_state = gl_label_object_get_shadow_state (object);
 372         gl_object_editor_set_shadow_state (editor, shadow_state);
 373
 374         gl_label_object_get_shadow_offset (object, &shadow_x, &shadow_y);
 375         gl_object_editor_set_shadow_offset (editor, shadow_x, shadow_y);
 376
 377         shadow_color_node = gl_label_object_get_shadow_color (object);
 378         gl_object_editor_set_shadow_color (editor, (merge != NULL), shadow_color_node);
 379         gl_color_node_free (&shadow_color_node);
 380
 381         shadow_opacity = gl_label_object_get_shadow_opacity (object);
 382         gl_object_editor_set_shadow_opacity (editor, shadow_opacity);
 383
 384         gl_debug (DEBUG_VIEW, "END");
 385 }
 386
 387
 388 /*---------------------------------------------------------------------------*/
 389 /* PRIVATE. label object "moved" callback.                                   */
 390 /*---------------------------------------------------------------------------*/
 391 static void
 392 update_editor_from_move_cb (glLabelObject    *object,
 393                             gdouble           dx,
 394                             gdouble           dy,
 395                             glObjectEditor   *editor)
 396 {
 397         gdouble            x, y;
 398
 399         gl_debug (DEBUG_VIEW, "START");
 400
 401         gl_label_object_get_position (object, &x, &y);
 402         gl_object_editor_set_position (editor, x, y);
 403
 404         gl_debug (DEBUG_VIEW, "END");
 405 }
 406
 407
 408 /*****************************************************************************/
 409 /* Is object at (x,y)?                                                       */
 410 /*****************************************************************************/
 411 static gboolean
 412 object_at (glViewObject  *view_object,
 413            cairo_t       *cr,
 414            gdouble        x,
 415            gdouble        y)
 416 {
 417         glLabelObject    *object;
 418         gdouble           w, h;
 419
 420         object = gl_view_object_get_object (view_object);
 421
 422         gl_label_object_get_size (object, &w, &h);
 423
 424         cairo_rectangle (cr, 0.0, 0.0, w, h);
 425
 426         if (cairo_in_fill (cr, x, y))
 427         {
 428                 return TRUE;
 429         }
 430
 431         return FALSE;
 432 }
 433
 434
 435 /*****************************************************************************/
 436 /* Return apropos cursor for create object mode.                             */
 437 /*****************************************************************************/
 438 GdkCursor *
 439 gl_view_text_get_create_cursor (void)
 440 {
 441         GdkCursor       *cursor = NULL;
 442         GdkPixmap       *pixmap_data, *pixmap_mask;
 443         GdkColor         fg = { 0, 0, 0, 0 };
 444         GdkColor         bg = { 0, 65535, 65535, 65535 };
 445
 446         gl_debug (DEBUG_VIEW, "START");
 447
 448         pixmap_data = gdk_bitmap_create_from_data (NULL,
 449                                                    (gchar *)cursor_text_bits,
 450                                                    cursor_text_width,
 451                                                    cursor_text_height);
 452         pixmap_mask = gdk_bitmap_create_from_data (NULL,
 453                                                    (gchar *)cursor_text_mask_bits,
 454                                                    cursor_text_mask_width,
 455                                                    cursor_text_mask_height);
 456         cursor = gdk_cursor_new_from_pixmap (pixmap_data, pixmap_mask, &fg,
 457                                              &bg, cursor_text_x_hot,
 458                                              cursor_text_y_hot);
 459
 460         gl_debug (DEBUG_VIEW, "END");
 461
 462         return cursor;
 463 }
 464
 465
 466 /*****************************************************************************/
 467 /* Object creation handler: button press event.                              */
 468 /*****************************************************************************/
 469 void
 470 gl_view_text_create_button_press_event   (glView *view,
 471                                           gdouble x,
 472                                           gdouble y)
 473 {
 474         GObject             *object;
 475         GList               *lines;
 476         gchar               *family;
 477         glColorNode         *color_node;
 478
 479         gl_view_unselect_all (view);
 480
 481         object = gl_label_text_new (view->label);
 482         color_node = gl_color_node_new_default ();
 483         gl_label_object_set_position (GL_LABEL_OBJECT(object), x, y);
 484         family = gl_view_get_default_font_family (view);
 485         gl_label_object_set_font_family (GL_LABEL_OBJECT(object), family);
 486         gl_label_object_set_font_size (GL_LABEL_OBJECT(object),
 487                                        gl_view_get_default_font_size (view));
 488         gl_label_object_set_font_weight (GL_LABEL_OBJECT(object),
 489                                          gl_view_get_default_font_weight (view));
 490         gl_label_object_set_font_italic_flag (GL_LABEL_OBJECT(object),
 491                                               gl_view_get_default_font_italic_flag (view));
 492
 493         color_node->color = gl_color_set_opacity (gl_view_get_default_text_color (view), 0.5);
 494         gl_label_object_set_text_color (GL_LABEL_OBJECT(object),
 495                                                         color_node);
 496         gl_label_object_set_text_alignment (GL_LABEL_OBJECT(object),
 497                                             gl_view_get_default_text_alignment (view));
 498         gl_label_object_set_text_line_spacing (GL_LABEL_OBJECT(object), gl_view_get_default_text_line_spacing (view));
 499
 500         g_free (family);
 501         lines = gl_text_node_lines_new_from_text (_("Text"));
 502         gl_label_text_set_lines (GL_LABEL_TEXT(object), lines);
 503         gl_color_node_free (&color_node);
 504
 505         view->create_object = GL_LABEL_OBJECT (object);
 506         view->create_x0 = x;
 507         view->create_y0 = y;
 508 }
 509
 510
 511 /*****************************************************************************/
 512 /* Object creation handler: motion event.                                    */
 513 /*****************************************************************************/
 514 void
 515 gl_view_text_create_motion_event     (glView *view,
 516                                       gdouble x,
 517                                       gdouble y)
 518 {
 519         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object), x, y);
 520 }
 521
 522
 523 /*****************************************************************************/
 524 /* Object creation handler: button relesase event.                           */
 525 /*****************************************************************************/
 526 void
 527 gl_view_text_create_button_release_event (glView *view,
 528                                           gdouble x,
 529                                           gdouble y)
 530 {
 531         glColorNode         *color_node;
 532
 533         color_node = gl_color_node_new_default ();
 534         gl_label_object_set_position (GL_LABEL_OBJECT(view->create_object), x, y);
 535         color_node->color = gl_view_get_default_text_color(view);
 536         gl_label_object_set_text_color (GL_LABEL_OBJECT(view->create_object), color_node);
 537         gl_color_node_free (&color_node);
 538 }
 539
 540
 541
 542 /*
 543  * Local Variables:       -- emacs
 544  * mode: C                -- emacs
 545  * c-basic-offset: 8      -- emacs
 546  * tab-width: 8           -- emacs
 547  * indent-tabs-mode: nil  -- emacs
 548  * End:                   -- emacs
 549  */