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       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_button_get_type (), &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_state (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                             gint             draw_indicator)
 216 {
 217   g_return_if_fail (toggle_button != NULL);
 218   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
 219
 220   draw_indicator = draw_indicator ? TRUE : FALSE;
 221
 222   if (toggle_button->draw_indicator != draw_indicator)
 223     {
 224       if (GTK_WIDGET_REALIZED(toggle_button))
 225         {
 226           gtk_widget_unrealize(GTK_WIDGET(toggle_button));
 227           toggle_button->draw_indicator = draw_indicator;
 228           gtk_widget_realize(GTK_WIDGET(toggle_button));
 229           gtk_widget_show(GTK_WIDGET(toggle_button));
 230         }
 231       else
 232         toggle_button->draw_indicator = draw_indicator;
 233
 234       if (GTK_WIDGET_VISIBLE (toggle_button))
 235         gtk_widget_queue_resize (GTK_WIDGET (toggle_button));
 236     }
 237 }
 238
 239 void
 240 gtk_toggle_button_set_state (GtkToggleButton *toggle_button,
 241                              gint             state)
 242 {
 243   g_return_if_fail (toggle_button != NULL);
 244   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (toggle_button));
 245
 246   if (toggle_button->active != (state != FALSE))
 247     gtk_button_clicked (GTK_BUTTON (toggle_button));
 248 }
 249
 250 void
 251 gtk_toggle_button_toggled (GtkToggleButton *toggle_button)
 252 {
 253   gtk_signal_emit (GTK_OBJECT (toggle_button), toggle_button_signals[TOGGLED]);
 254 }
 255
 256
 257 static void
 258 gtk_toggle_button_paint (GtkWidget    *widget,
 259                          GdkRectangle *area)
 260 {
 261   GtkButton *button;
 262   GtkToggleButton *toggle_button;
 263   GtkShadowType shadow_type;
 264   gint width, height;
 265   gint x, y;
 266
 267   if (GTK_WIDGET_DRAWABLE (widget))
 268     {
 269       button = GTK_BUTTON (widget);
 270       toggle_button = GTK_TOGGLE_BUTTON (widget);
 271
 272       x = 0;
 273       y = 0;
 274       width = widget->allocation.width - GTK_CONTAINER (widget)->border_width * 2;
 275       height = widget->allocation.height - GTK_CONTAINER (widget)->border_width * 2;
 276
 277       gdk_window_set_back_pixmap (widget->window, NULL, TRUE);
 278       gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 279
 280       if (GTK_WIDGET_HAS_DEFAULT (widget) &&
 281           GTK_BUTTON (widget)->relief == GTK_RELIEF_NORMAL)
 282         {
 283           gtk_paint_box (widget->style, widget->window,
 284                          GTK_STATE_NORMAL, GTK_SHADOW_IN,
 285                          area, widget, "togglebuttondefault",
 286                          x, y, width, height);
 287         }
 288
 289       if (GTK_WIDGET_CAN_DEFAULT (widget))
 290         {
 291           x += widget->style->klass->xthickness;
 292           y += widget->style->klass->ythickness;
 293           width -= 2 * x + DEFAULT_SPACING;
 294           height -= 2 * y + DEFAULT_SPACING;
 295           x += DEFAULT_LEFT_POS;
 296           y += DEFAULT_TOP_POS;
 297         }
 298
 299       if (GTK_WIDGET_HAS_FOCUS (widget))
 300         {
 301           x += 1;
 302           y += 1;
 303           width -= 2;
 304           height -= 2;
 305         }
 306
 307       if ((GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE) ||
 308           toggle_button->active)
 309         shadow_type = GTK_SHADOW_IN;
 310       else
 311         shadow_type = GTK_SHADOW_OUT;
 312
 313       if ((button->relief != GTK_RELIEF_NONE) ||
 314           ((GTK_WIDGET_STATE(widget) != GTK_STATE_NORMAL) &&
 315            (GTK_WIDGET_STATE(widget) != GTK_STATE_INSENSITIVE)))
 316         gtk_paint_box (widget->style, widget->window,
 317                        GTK_WIDGET_STATE (widget),
 318                        shadow_type, area, widget, "togglebutton",
 319                        x, y, width, height);
 320
 321       if (GTK_WIDGET_HAS_FOCUS (widget))
 322         {
 323           x -= 1;
 324           y -= 1;
 325           width += 2;
 326           height += 2;
 327
 328           gtk_paint_focus (widget->style, widget->window,
 329                            area, widget, "togglebutton",
 330                            x, y, width - 1, height - 1);
 331         }
 332     }
 333 }
 334
 335 static void
 336 gtk_toggle_button_draw (GtkWidget    *widget,
 337                         GdkRectangle *area)
 338 {
 339   GtkButton *button;
 340   GdkRectangle child_area;
 341   GdkRectangle tmp_area;
 342
 343   g_return_if_fail (widget != NULL);
 344   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 345   g_return_if_fail (area != NULL);
 346
 347   if (GTK_WIDGET_DRAWABLE (widget))
 348     {
 349       button = GTK_BUTTON (widget);
 350
 351       tmp_area = *area;
 352       tmp_area.x -= GTK_CONTAINER (button)->border_width;
 353       tmp_area.y -= GTK_CONTAINER (button)->border_width;
 354
 355       gtk_toggle_button_paint (widget, &tmp_area);
 356
 357       if (GTK_BIN (button)->child && gtk_widget_intersect (GTK_BIN (button)->child, &tmp_area, &child_area))
 358         gtk_widget_draw (GTK_BIN (button)->child, &child_area);
 359     }
 360 }
 361
 362 static void
 363 gtk_toggle_button_pressed (GtkButton *button)
 364 {
 365   GtkToggleButton *toggle_button;
 366   GtkStateType new_state;
 367
 368   g_return_if_fail (button != NULL);
 369   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 370
 371   toggle_button = GTK_TOGGLE_BUTTON (button);
 372
 373   button->button_down = TRUE;
 374
 375   if (toggle_button->active)
 376     new_state = (button->in_button ? GTK_STATE_NORMAL : GTK_STATE_ACTIVE);
 377   else
 378     new_state = (button->in_button ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);
 379
 380   if (GTK_WIDGET_STATE (button) != new_state)
 381     {
 382       gtk_widget_set_state (GTK_WIDGET (button), new_state);
 383       gtk_widget_queue_draw (GTK_WIDGET (button));
 384     }
 385 }
 386
 387 static void
 388 gtk_toggle_button_released (GtkButton *button)
 389 {
 390   GtkToggleButton *toggle_button;
 391   GtkStateType new_state;
 392
 393   g_return_if_fail (button != NULL);
 394   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 395
 396   if (button->button_down)
 397     {
 398       toggle_button = GTK_TOGGLE_BUTTON (button);
 399
 400       button->button_down = FALSE;
 401
 402       if (button->in_button)
 403         {
 404           gtk_button_clicked (button);
 405         }
 406       else
 407         {
 408           if (toggle_button->active)
 409             new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
 410           else
 411             new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
 412
 413           if (GTK_WIDGET_STATE (button) != new_state)
 414             {
 415               gtk_widget_set_state (GTK_WIDGET (button), new_state);
 416               gtk_widget_queue_draw (GTK_WIDGET (button));
 417             }
 418         }
 419     }
 420 }
 421
 422 static void
 423 gtk_toggle_button_clicked (GtkButton *button)
 424 {
 425   GtkToggleButton *toggle_button;
 426   GtkStateType new_state;
 427
 428   g_return_if_fail (button != NULL);
 429   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 430
 431   toggle_button = GTK_TOGGLE_BUTTON (button);
 432   toggle_button->active = !toggle_button->active;
 433
 434   gtk_toggle_button_toggled (toggle_button);
 435
 436   if (toggle_button->active)
 437     new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
 438   else
 439     new_state = (button->in_button ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL);
 440
 441   if (GTK_WIDGET_STATE (button) != new_state)
 442     gtk_widget_set_state (GTK_WIDGET (button), new_state);
 443   gtk_widget_queue_draw (GTK_WIDGET (button));
 444 }
 445
 446 static void
 447 gtk_toggle_button_enter (GtkButton *button)
 448 {
 449   GtkToggleButton *toggle_button;
 450   GtkStateType new_state;
 451
 452   g_return_if_fail (button != NULL);
 453   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 454
 455   toggle_button = GTK_TOGGLE_BUTTON (button);
 456
 457   if (toggle_button->active)
 458     new_state = (button->button_down ? GTK_STATE_NORMAL : GTK_STATE_PRELIGHT);
 459   else
 460     new_state = (button->button_down ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT);
 461
 462   if (GTK_WIDGET_STATE (button) != new_state)
 463     {
 464       gtk_widget_set_state (GTK_WIDGET (button), new_state);
 465       gtk_widget_queue_draw (GTK_WIDGET (button));
 466     }
 467 }
 468
 469 static void
 470 gtk_toggle_button_leave (GtkButton *button)
 471 {
 472   GtkToggleButton *toggle_button;
 473   GtkStateType new_state;
 474
 475   g_return_if_fail (button != NULL);
 476   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (button));
 477
 478   toggle_button = GTK_TOGGLE_BUTTON (button);
 479
 480   new_state = (toggle_button->active ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL);
 481
 482   if (GTK_WIDGET_STATE (button) != new_state)
 483     {
 484       gtk_widget_set_state (GTK_WIDGET (button), new_state);
 485       gtk_widget_queue_draw (GTK_WIDGET (button));
 486     }
 487 }
 488
 489 static void
 490 gtk_toggle_button_realize (GtkWidget *widget)
 491 {
 492   GtkToggleButton *toggle_button;
 493   GdkWindowAttr attributes;
 494   gint attributes_mask;
 495   gint border_width;
 496
 497   g_return_if_fail (widget != NULL);
 498   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 499
 500   toggle_button = GTK_TOGGLE_BUTTON (widget);
 501   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
 502
 503   border_width = GTK_CONTAINER (widget)->border_width;
 504
 505   attributes.window_type = GDK_WINDOW_CHILD;
 506   attributes.x = widget->allocation.x + border_width;
 507   attributes.y = widget->allocation.y + border_width;
 508   attributes.width = widget->allocation.width - border_width * 2;
 509   attributes.height = widget->allocation.height - border_width * 2;
 510   attributes.event_mask = gtk_widget_get_events (widget);
 511   attributes.event_mask |= (GDK_EXPOSURE_MASK |
 512                             GDK_BUTTON_PRESS_MASK |
 513                             GDK_BUTTON_RELEASE_MASK |
 514                             GDK_ENTER_NOTIFY_MASK |
 515                             GDK_LEAVE_NOTIFY_MASK);
 516
 517   if (toggle_button->draw_indicator)
 518     {
 519       GTK_WIDGET_SET_FLAGS (toggle_button, GTK_NO_WINDOW);
 520       attributes.wclass = GDK_INPUT_ONLY;
 521       attributes_mask = GDK_WA_X | GDK_WA_Y;
 522
 523       widget->window = gtk_widget_get_parent_window(widget);
 524       gdk_window_ref(widget->window);
 525
 526       toggle_button->event_window =
 527         gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 528       gdk_window_set_user_data (toggle_button->event_window, toggle_button);
 529     }
 530   else
 531     {
 532       GTK_WIDGET_UNSET_FLAGS (toggle_button, GTK_NO_WINDOW);
 533       attributes.wclass = GDK_INPUT_OUTPUT;
 534       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
 535       attributes.visual = gtk_widget_get_visual (widget);
 536       attributes.colormap = gtk_widget_get_colormap (widget);
 537       widget->window =
 538         gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
 539       gdk_window_set_user_data (widget->window, toggle_button);
 540     }
 541   widget->style = gtk_style_attach (widget->style, widget->window);
 542 }
 543
 544 static void
 545 gtk_toggle_button_unrealize (GtkWidget *widget)
 546 {
 547   GtkToggleButton *toggle_button;
 548
 549   g_return_if_fail (widget != NULL);
 550   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 551
 552   toggle_button = GTK_TOGGLE_BUTTON (widget);
 553
 554   if (toggle_button->draw_indicator)
 555     {
 556       gdk_window_set_user_data (toggle_button->event_window, NULL);
 557       gdk_window_destroy (toggle_button->event_window);
 558       toggle_button->event_window = NULL;
 559     }
 560
 561   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
 562     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
 563 }
 564
 565 static void
 566 gtk_toggle_button_map (GtkWidget *widget)
 567 {
 568   g_return_if_fail (widget != NULL);
 569   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 570
 571   if (GTK_WIDGET_REALIZED (widget) && !GTK_WIDGET_MAPPED (widget))
 572     if (GTK_TOGGLE_BUTTON (widget)->draw_indicator)
 573       gdk_window_show (GTK_TOGGLE_BUTTON (widget)->event_window);
 574
 575   GTK_WIDGET_CLASS (parent_class)->map (widget);
 576 }
 577
 578 static void
 579 gtk_toggle_button_unmap (GtkWidget *widget)
 580 {
 581   g_return_if_fail (widget != NULL);
 582   g_return_if_fail (GTK_IS_TOGGLE_BUTTON (widget));
 583
 584   if (GTK_WIDGET_MAPPED (widget))
 585     if (GTK_TOGGLE_BUTTON (widget)->draw_indicator)
 586       gdk_window_hide (GTK_TOGGLE_BUTTON (widget)->event_window);
 587
 588   GTK_WIDGET_CLASS (parent_class)->unmap (widget);
 589 }