Pileus Git - ~andy/gtk/blob - gtk/gtktogglebutton.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19 #include "gtklabel.h"
  20 #include "gtkmain.h"
  21 #include "gtksignal.h"
  22 #include "gtktogglebutton.h"
  23
  24
  25 #define DEFAULT_LEFT_POS  4
  26 #define DEFAULT_TOP_POS   4
  27 #define DEFAULT_SPACING   7
  28
  29 enum {
  30   TOGGLED,
  31   LAST_SIGNAL
  32 };
  33
  34 enum {
  35   ARG_0,
  36   ARG_ACTIVE,
  37   ARG_DRAW_INDICATOR
  38 };
  39
  40
  41 static void gtk_toggle_button_class_init (GtkToggleButtonClass *klass);
  42 static void gtk_toggle_button_init       (GtkToggleButton      *toggle_button);
  43 static void gtk_toggle_button_paint      (GtkWidget            *widget,
  44                                           GdkRectangle         *area);
  45 static void gtk_toggle_button_draw       (GtkWidget            *widget,
  46                                           GdkRectangle         *area);
  47 static void gtk_toggle_button_pressed    (GtkButton            *button);
  48 static void gtk_toggle_button_released   (GtkButton            *button);
  49 static void gtk_toggle_button_clicked    (GtkButton            *button);
  50 static void gtk_toggle_button_enter      (GtkButton            *button);
  51 static void gtk_toggle_button_leave      (GtkButton            *button);
  52 static void gtk_toggle_button_set_arg    (GtkObject            *object,
  53                                           GtkArg               *arg,
  54                                           guint                 arg_id);
  55 static void gtk_toggle_button_get_arg    (GtkObject            *object,
  56                                           GtkArg               *arg,
  57                                           guint                 arg_id);
  58 static void gtk_toggle_button_leave      (GtkButton            *button);
  59 static void gtk_toggle_button_realize    (GtkWidget            *widget);
  60 static void gtk_toggle_button_unrealize  (GtkWidget            *widget);
  61 static void gtk_toggle_button_map        (GtkWidget            *widget);
  62 static void gtk_toggle_button_unmap      (GtkWidget            *widget);
  63
  64 static guint toggle_button_signals[LAST_SIGNAL] = { 0 };
  65 static GtkContainerClass *parent_class = NULL;
  66
  67 GtkType
  68 gtk_toggle_button_get_type (void)
  69 {
  70   static GtkType toggle_button_type = 0;
  71
  72   if (!toggle_button_type)
  73     {
  74       static const GtkTypeInfo toggle_button_info =
  75       {
  76         "GtkToggleButton",
  77         sizeof (GtkToggleButton),
  78         sizeof (GtkToggleButtonClass),
  79         (GtkClassInitFunc) gtk_toggle_button_class_init,
  80         (GtkObjectInitFunc) gtk_toggle_button_init,
  81         /* reserved_1 */ NULL,
  82         /* reserved_2 */ NULL,
  83         (GtkClassInitFunc) NULL,
  84       };
  85
  86       toggle_button_type = gtk_type_unique (GTK_TYPE_BUTTON, &toggle_button_info);
  87     }
  88
  89   return toggle_button_type;
  90 }
  91
  92 static void
  93 gtk_toggle_button_class_init (GtkToggleButtonClass *class)
  94 {
  95   GtkObjectClass *object_class;
  96   GtkWidgetClass *widget_class;
  97   GtkContainerClass *container_class;
  98   GtkButtonClass *button_class;
  99
 100   object_class = (GtkObjectClass*) class;
 101   widget_class = (GtkWidgetClass*) class;
 102   container_class = (GtkContainerClass*) class;
 103   button_class = (GtkButtonClass*) class;
 104
 105   parent_class = gtk_type_class (GTK_TYPE_BUTTON);
 106
 107   gtk_object_add_arg_type ("GtkToggleButton::active", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_ACTIVE);
 108   gtk_object_add_arg_type ("GtkToggleButton::draw_indicator", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_DRAW_INDICATOR);
 109
 110   toggle_button_signals[TOGGLED] =
 111     gtk_signal_new ("toggled",
 112                     GTK_RUN_FIRST,
 113                     object_class->type,
 114                     GTK_SIGNAL_OFFSET (GtkToggleButtonClass, toggled),
 115                     gtk_marshal_NONE__NONE,
 116                     GTK_TYPE_NONE, 0);
 117
 118   gtk_object_class_add_signals (object_class, toggle_button_signals, LAST_SIGNAL);
 119
 120   object_class->set_arg = gtk_toggle_button_set_arg;
 121   object_class->get_arg = gtk_toggle_button_get_arg;
 122
 123   widget_class->draw = gtk_toggle_button_draw;
 124   widget_class->realize = gtk_toggle_button_realize;
 125   widget_class->unrealize = gtk_toggle_button_unrealize;
 126   widget_class->map = gtk_toggle_button_map;
 127   widget_class->unmap = gtk_toggle_button_unmap;
 128
 129   button_class->pressed = gtk_toggle_button_pressed;
 130   button_class->released = gtk_toggle_button_released;
 131   button_class->clicked = gtk_toggle_button_clicked;
 132   button_class->enter = gtk_toggle_button_enter;
 133   button_class->leave = gtk_toggle_button_leave;
 134
 135   class->toggled = NULL;
 136 }
 137
 138 static void
 139 gtk_toggle_button_init (GtkToggleButton *toggle_button)
 140 {
 141   toggle_button->active = FALSE;
 142   toggle_button->draw_indicator = FALSE;
 143 }
 144
 145
 146 GtkWidget*
 147 gtk_toggle_button_new (void)
 148 {
 149   return GTK_WIDGET (gtk_type_new (gtk_toggle_button_get_type ()));
 150 }
 151
 152 GtkWidget*
 153 gtk_toggle_button_new_with_label (const gchar *label)
 154 {
 155   GtkWidget *toggle_button;
 156   GtkWidget *label_widget;
 157
 158   toggle_button = gtk_toggle_button_new ();
 159   label_widget = gtk_label_new (label);
 160   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.5, 0.5);
 161
 162   gtk_container_add (GTK_CONTAINER (toggle_button), label_widget);
 163   gtk_widget_show (label_widget);
 164
 165   return toggle_button;
 166 }
 167
 168 static void
 169 gtk_toggle_button_set_arg (GtkObject *object,
 170                            GtkArg    *arg,
 171                            guint      arg_id)
 172 {
 173   GtkToggleButton *tb;
 174
 175   tb = GTK_TOGGLE_BUTTON (object);
 176
 177   switch (arg_id)
 178     {
 179     case ARG_ACTIVE:
 180       gtk_toggle_button_set_active (tb, GTK_VALUE_BOOL (*arg));
 181       break;
 182     case ARG_DRAW_INDICATOR:
 183       gtk_toggle_button_set_mode (tb, GTK_VALUE_BOOL (*arg));
 184       break;
 185     default:
 186       break;
 187     }
 188 }
 189
 190 static void
 191 gtk_toggle_button_get_arg (GtkObject *object,
 192                            GtkArg    *arg,
 193                            guint      arg_id)
 194 {
 195   GtkToggleButton *tb;
 196
 197   tb = GTK_TOGGLE_BUTTON (object);
 198
 199   switch (arg_id)
 200     {
 201     case ARG_ACTIVE:
 202       GTK_VALUE_BOOL (*arg) = tb->active;
 203       break;
 204     case ARG_DRAW_INDICATOR:
 205       GTK_VALUE_BOOL (*arg) = tb->draw_indicator;
 206       break;
 207     default:
 208       arg->type = GTK_TYPE_INVALID;
 209       break;
 210     }
 211 }
 212
 213 void
 214 gtk_toggle_button_set_mode (GtkToggleButton *toggle_button,
 215                             gboolean         draw_indicator)
 216 {
 217   GtkWidget *widget;
 218
 219   g_return_if_fail (toggle_button != NULL);
 220   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
 221
 222   widget = GTK_WIDGET (toggle_button);
 223
 224   draw_indicator = draw_indicator ? TRUE : FALSE;
 225
 226   if (toggle_button->draw_indicator != draw_indicator)
 227     {
 228       if (GTK_WIDGET_REALIZED (toggle_button))
 229         {
 230           gboolean visible = GTK_WIDGET_VISIBLE (toggle_button);
 231
 232           if (visible)
 233             gtk_widget_hide (widget);
 234
 235           gtk_widget_unrealize (widget);
 236           toggle_button->draw_indicator = draw_indicator;
 237           gtk_widget_realize (widget);
 238
 239           if (visible)
 240             gtk_widget_show (widget);
 241         }
 242       else
 243         toggle_button->draw_indicator = draw_indicator;
 244
 245       if (GTK_WIDGET_VISIBLE (toggle_button))
 246         gtk_widget_queue_resize (GTK_WIDGET (toggle_button));
 247     }
 248 }
 249
 250 void
 251 gtk_toggle_button_set_active (GtkToggleButton *toggle_button,
 252                               gboolean         is_active)
 253 {
 254   g_return_if_fail (toggle_button != NULL);
 255   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
 256
 257   is_active = is_active != 0;
 258
 259   if (toggle_button->active != is_active)
 260     gtk_button_clicked (GTK_BUTTON (toggle_button));
 261 }
 262
 263 void
 264 gtk_toggle_button_toggled (GtkToggleButton *toggle_button)
 265 {
 266   g_return_if_fail (toggle_button != NULL);
 267   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
 268
 269   gtk_signal_emit (GTK_OBJECT (toggle_button), toggle_button_signals[TOGGLED]);
 270 }
 271
 272
 273 static void
 274 gtk_toggle_button_paint (GtkWidget    *widget,
 275                          GdkRectangle *area)
 276 {
 277   GtkButton *button;
 278   GtkToggleButton *toggle_button;
 279   GtkShadowType shadow_type;
 280   gint width, height;
 281   gint x, y;
 282
 283   if (GTK_WIDGET_DRAWABLE (widget))
 284     {
 285       button = GTK_BUTTON (widget);
 286       toggle_button = GTK_TOGGLE_BUTTON (widget);
 287
 288       x = 0;
 289       y = 0;
 290       width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
 291       height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
 292
 293       gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 294       gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 295
 296       if (GTK_WIDGET_HAS_DEFAULT (widget) &&
 297           GTK_BUTTON (widget)->relief == GTK_RELIEF_NORMAL)
 298         {
 299           gtk_paint_box (widget->style, widget->window,
 300                          GTK_STATE_NORMAL, GTK_SHADOW_IN,
 301                          area, widget, "togglebuttondefault",
 302                          x, y, width, height);
 303         }
 304
 305       if (GTK_WIDGET_CAN_DEFAULT (widget))
 306         {
 307           x += widget->style->klass->xthickness;
 308           y += widget->style->klass->ythickness;
 309           width -= 2 * x + DEFAULT_SPACING;
 310           height -= 2 * y + DEFAULT_SPACING;
 311           x += DEFAULT_LEFT_POS;
 312           y += DEFAULT_TOP_POS;
 313         }
 314
 315       if (GTK_WIDGET_HAS_FOCUS (widget))
 316         {
 317           x += 1;
 318           y += 1;
 319           width -= 2;
 320           height -= 2;
 321         }
 322
 323       if ((GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE) ||
 324           toggle_button->active)
 325         shadow_type = GTK_SHADOW_IN;
 326       else
 327         shadow_type = GTK_SHADOW_OUT;
 328
 329       if (button->relief != GTK_RELIEF_NONE ||
 330           (GTK_WIDGET_STATE(widget) != GTK_STATE_NORMAL &&
 331            GTK_WIDGET_STATE(widget) != GTK_STATE_INSENSITIVE))
 332         gtk_paint_box (widget->style, widget->window,
 333                        GTK_WIDGET_STATE (widget),
 334                        shadow_type, area, widget, "togglebutton",
 335                        x, y, width, height);
 336
 337       if (GTK_WIDGET_HAS_FOCUS (widget))
 338         {
 339           x -= 1;
 340           y -= 1;
 341           width += 2;
 342           height += 2;
 343
 344           gtk_paint_focus (widget->style, widget->window,
 345                            area, widget, "togglebutton",
 346                            x, y, width - 1, height - 1);
 347         }
 348     }
 349 }
 350
 351 static void
 352 gtk_toggle_button_draw (GtkWidget    *widget,
 353                         GdkRectangle *area)
 354 {
 355   GdkRectangle child_area;
 356   GdkRectangle tmp_area;
 357   GtkBin *bin;
 358
 359   g_return_if_fail (widget != NULL);
 360   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 361   g_return_if_fail (area != NULL);
 362
 363   bin = GTK_BIN (widget);
 364
 365   if (GTK_WIDGET_DRAWABLE (widget))
 366     {
 367       tmp_area = *area;
 368       tmp_area.x -= GTK_CONTAINER (widget)->border_width;
 369       tmp_area.y -= GTK_CONTAINER (widget)->border_width;
 370
 371       gtk_toggle_button_paint (widget, &tmp_area);
 372
 373       if (bin->child && gtk_widget_intersect (bin->child, &tmp_area, &child_area))
 374         gtk_widget_draw (bin->child, &child_area);
 375     }
 376 }
 377
 378 static void
 379 gtk_toggle_button_pressed (GtkButton *button)
 380 {
 381   GtkToggleButton *toggle_button;
 382   GtkStateType new_state;
 383
 384   g_return_if_fail (button != NULL);
 385   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 386
 387   toggle_button = GTK_TOGGLE_BUTTON (button);
 388
 389   button->button_down = TRUE;
 390
 391   if (toggle_button->active)
 392     new_state = (button->in_button ? GTK_STATE_NORMAL : GTK_STATE_ACTIVE);
 393   else
 394     new_state = (button->in_button ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);
 395
 396   if (GTK_WIDGET_STATE (button) != new_state)
 397     gtk_widget_set_state (GTK_WIDGET (button), new_state);
 398 }
 399
 400 static void
 401 gtk_toggle_button_released (GtkButton *button)
 402 {
 403   GtkToggleButton *toggle_button;
 404   GtkStateType new_state;
 405
 406   g_return_if_fail (button != NULL);
 407   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 408
 409   if (button->button_down)
 410     {
 411       toggle_button = GTK_TOGGLE_BUTTON (button);
 412
 413       button->button_down = FALSE;
 414
 415       if (button->in_button)
 416         {
 417           gtk_button_clicked (button);
 418         }
 419       else
 420         {
 421           if (toggle_button->active)
 422             new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
 423           else
 424             new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
 425
 426           if (GTK_WIDGET_STATE (button) != new_state)
 427             gtk_widget_set_state (GTK_WIDGET (button), new_state);
 428         }
 429     }
 430 }
 431
 432 static void
 433 gtk_toggle_button_clicked (GtkButton *button)
 434 {
 435   GtkToggleButton *toggle_button;
 436   GtkStateType new_state;
 437
 438   g_return_if_fail (button != NULL);
 439   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 440
 441   toggle_button = GTK_TOGGLE_BUTTON (button);
 442   toggle_button->active = !toggle_button->active;
 443
 444   gtk_toggle_button_toggled (toggle_button);
 445
 446   if (toggle_button->active)
 447     new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
 448   else
 449     new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
 450
 451   if (GTK_WIDGET_STATE (button) != new_state)
 452     gtk_widget_set_state (GTK_WIDGET (button), new_state);
 453   else
 454     gtk_widget_queue_draw (GTK_WIDGET (button));
 455 }
 456
 457 static void
 458 gtk_toggle_button_enter (GtkButton *button)
 459 {
 460   GtkToggleButton *toggle_button;
 461   GtkStateType new_state;
 462
 463   g_return_if_fail (button != NULL);
 464   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 465
 466   toggle_button = GTK_TOGGLE_BUTTON (button);
 467
 468   if (toggle_button->active)
 469     new_state = (button->button_down ? GTK_STATE_NORMAL : GTK_STATE_PRELIGHT);
 470   else
 471     new_state = (button->button_down ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT);
 472
 473   if (GTK_WIDGET_STATE (button) != new_state)
 474     gtk_widget_set_state (GTK_WIDGET (button), new_state);
 475 }
 476
 477 static void
 478 gtk_toggle_button_leave (GtkButton *button)
 479 {
 480   GtkToggleButton *toggle_button;
 481   GtkStateType new_state;
 482
 483   g_return_if_fail (button != NULL);
 484   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 485
 486   toggle_button = GTK_TOGGLE_BUTTON (button);
 487
 488   new_state = (toggle_button->active ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);
 489
 490   if (GTK_WIDGET_STATE (button) != new_state)
 491     gtk_widget_set_state (GTK_WIDGET (button), new_state);
 492 }
 493
 494 static void
 495 gtk_toggle_button_realize (GtkWidget *widget)
 496 {
 497   GtkToggleButton *toggle_button;
 498   GdkWindowAttr attributes;
 499   gint attributes_mask;
 500   gint border_width;
 501
 502   g_return_if_fail (widget != NULL);
 503   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 504
 505   toggle_button = GTK_TOGGLE_BUTTON (widget);
 506   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 507
 508   border_width = GTK_CONTAINER (widget)->border_width;
 509
 510   attributes.window_type = GDK_WINDOW_CHILD;
 511   attributes.x = widget->allocation.x + border_width;
 512   attributes.y = widget->allocation.y + border_width;
 513   attributes.width = widget->allocation.width - border_width * 2;
 514   attributes.height = widget->allocation.height - border_width * 2;
 515   attributes.event_mask = gtk_widget_get_events (widget);
 516   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 517                             GDK_BUTTON_PRESS_MASK |
 518                             GDK_BUTTON_RELEASE_MASK |
 519                             GDK_ENTER_NOTIFY_MASK |
 520                             GDK_LEAVE_NOTIFY_MASK);
 521
 522   if (toggle_button->draw_indicator)
 523     {
 524       GTK_WIDGET_SET_FLAGS (toggle_button, GTK_NO_WINDOW);
 525       attributes.wclass = GDK_INPUT_ONLY;
 526       attributes_mask = GDK_WA_X | GDK_WA_Y;
 527
 528       widget->window = gtk_widget_get_parent_window (widget);
 529       gdk_window_ref (widget->window);
 530
 531       toggle_button->event_window = gdk_window_new (gtk_widget_get_parent_window (widget),
 532                                                     &attributes, attributes_mask);
 533       gdk_window_set_user_data (toggle_button->event_window, toggle_button);
 534     }
 535   else
 536     {
 537       GTK_WIDGET_UNSET_FLAGS (toggle_button, GTK_NO_WINDOW);
 538       attributes.wclass = GDK_INPUT_OUTPUT;
 539       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 540       attributes.visual = gtk_widget_get_visual (widget);
 541       attributes.colormap = gtk_widget_get_colormap (widget);
 542       widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
 543                                        &attributes, attributes_mask);
 544       gdk_window_set_user_data (widget->window, toggle_button);
 545     }
 546
 547   widget->style = gtk_style_attach (widget->style, widget->window);
 548
 549   if (!toggle_button->draw_indicator)
 550     gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL);
 551 }
 552
 553 static void
 554 gtk_toggle_button_unrealize (GtkWidget *widget)
 555 {
 556   GtkToggleButton *toggle_button;
 557
 558   g_return_if_fail (widget != NULL);
 559   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 560
 561   toggle_button = GTK_TOGGLE_BUTTON (widget);
 562
 563   if (toggle_button->draw_indicator)
 564     {
 565       gdk_window_set_user_data (toggle_button->event_window, NULL);
 566       gdk_window_destroy (toggle_button->event_window);
 567       toggle_button->event_window = NULL;
 568     }
 569
 570   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 571     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 572 }
 573
 574 static void
 575 gtk_toggle_button_map (GtkWidget *widget)
 576 {
 577   g_return_if_fail (widget != NULL);
 578   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 579
 580   if (GTK_TOGGLE_BUTTON (widget)->draw_indicator)
 581     gdk_window_show (GTK_TOGGLE_BUTTON (widget)->event_window);
 582
 583   GTK_WIDGET_CLASS (parent_class)->map (widget);
 584 }
 585
 586 static void
 587 gtk_toggle_button_unmap (GtkWidget *widget)
 588 {
 589   g_return_if_fail (widget != NULL);
 590   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 591
 592   if (GTK_TOGGLE_BUTTON (widget)->draw_indicator)
 593     gdk_window_hide (GTK_TOGGLE_BUTTON (widget)->event_window);
 594
 595   GTK_WIDGET_CLASS (parent_class)->unmap (widget);
 596 }