Pileus Git - ~andy/gtk/blob - gtk/gtkcheckbutton.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 Lesser 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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser 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
  20 /*
  21  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  22  * file for a list of people on the GTK+ Team.  See the ChangeLog
  23  * files for a list of changes.  These files are distributed with
  24  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  25  */
  26
  27 #include "gtkcheckbutton.h"
  28 #include "gtkintl.h"
  29 #include "gtklabel.h"
  30
  31
  32 #define INDICATOR_SIZE     13
  33 #define INDICATOR_SPACING  2
  34
  35
  36 static void gtk_check_button_class_init          (GtkCheckButtonClass *klass);
  37 static void gtk_check_button_init                (GtkCheckButton      *check_button);
  38 static void gtk_check_button_size_request        (GtkWidget           *widget,
  39                                                   GtkRequisition      *requisition);
  40 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  41                                                   GtkAllocation       *allocation);
  42 static gint gtk_check_button_expose              (GtkWidget           *widget,
  43                                                   GdkEventExpose      *event);
  44 static void gtk_check_button_paint               (GtkWidget           *widget,
  45                                                   GdkRectangle        *area);
  46 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  47                                                   GdkRectangle        *area);
  48 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  49                                                   GdkRectangle        *area);
  50
  51 static GtkToggleButtonClass *parent_class = NULL;
  52
  53
  54 GtkType
  55 gtk_check_button_get_type (void)
  56 {
  57   static GtkType check_button_type = 0;
  58
  59   if (!check_button_type)
  60     {
  61       static const GtkTypeInfo check_button_info =
  62       {
  63         "GtkCheckButton",
  64         sizeof (GtkCheckButton),
  65         sizeof (GtkCheckButtonClass),
  66         (GtkClassInitFunc) gtk_check_button_class_init,
  67         (GtkObjectInitFunc) gtk_check_button_init,
  68         /* reserved_1 */ NULL,
  69         /* reserved_2 */ NULL,
  70         (GtkClassInitFunc) NULL,
  71       };
  72
  73       check_button_type = gtk_type_unique (GTK_TYPE_TOGGLE_BUTTON, &check_button_info);
  74     }
  75
  76   return check_button_type;
  77 }
  78
  79 static void
  80 gtk_check_button_class_init (GtkCheckButtonClass *class)
  81 {
  82   GtkWidgetClass *widget_class;
  83
  84   widget_class = (GtkWidgetClass*) class;
  85   parent_class = gtk_type_class (gtk_toggle_button_get_type ());
  86
  87   widget_class->size_request = gtk_check_button_size_request;
  88   widget_class->size_allocate = gtk_check_button_size_allocate;
  89   widget_class->expose_event = gtk_check_button_expose;
  90
  91   class->draw_indicator = gtk_real_check_button_draw_indicator;
  92
  93   gtk_widget_class_install_style_property (widget_class,
  94                                            g_param_spec_int ("indicator_size",
  95                                                              _("Indicator Size"),
  96                                                              _("Size of check or radio indicator"),
  97                                                              0,
  98                                                              G_MAXINT,
  99                                                              INDICATOR_SIZE,
 100                                                              G_PARAM_READABLE));
 101   gtk_widget_class_install_style_property (widget_class,
 102                                            g_param_spec_int ("indicator_spacing",
 103                                                              _("Indicator Spacing"),
 104                                                              _("Spacing around check or radio indicator"),
 105                                                              0,
 106                                                              G_MAXINT,
 107                                                              INDICATOR_SPACING,
 108                                                              G_PARAM_READABLE));
 109 }
 110
 111 static void
 112 gtk_check_button_init (GtkCheckButton *check_button)
 113 {
 114   GTK_WIDGET_SET_FLAGS (check_button, GTK_NO_WINDOW);
 115   GTK_WIDGET_UNSET_FLAGS (check_button, GTK_RECEIVES_DEFAULT);
 116   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
 117 }
 118
 119 GtkWidget*
 120 gtk_check_button_new (void)
 121 {
 122   return gtk_widget_new (GTK_TYPE_CHECK_BUTTON, NULL);
 123 }
 124
 125
 126 GtkWidget*
 127 gtk_check_button_new_with_label (const gchar *label)
 128 {
 129   GtkWidget *check_button;
 130   GtkWidget *label_widget;
 131
 132   check_button = gtk_check_button_new ();
 133   label_widget = gtk_label_new (label);
 134   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 135
 136   gtk_container_add (GTK_CONTAINER (check_button), label_widget);
 137   gtk_widget_show (label_widget);
 138
 139   return check_button;
 140 }
 141
 142 /**
 143  * gtk_check_button_new_with_mnemonic:
 144  * @label: The text of the button, with an underscore in front of the
 145  *         mnemonic character
 146  * @returns: a new #GtkCheckButton
 147  *
 148  * Creates a new #GtkCheckButton containing a label. The label
 149  * will be created using gtk_label_new_with_mnemonic(), so underscores
 150  * in @label indicate the mnemonic for the check button.
 151  **/
 152 GtkWidget*
 153 gtk_check_button_new_with_mnemonic (const gchar *label)
 154 {
 155   GtkWidget *check_button;
 156   GtkWidget *label_widget;
 157
 158   check_button = gtk_check_button_new ();
 159   label_widget = gtk_label_new_with_mnemonic (label);
 160   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 161
 162   gtk_container_add (GTK_CONTAINER (check_button), label_widget);
 163   gtk_widget_show (label_widget);
 164
 165   return check_button;
 166 }
 167
 168
 169 /* This should only be called when toggle_button->draw_indicator
 170  * is true.
 171  */
 172 static void
 173 gtk_check_button_paint (GtkWidget    *widget,
 174                         GdkRectangle *area)
 175 {
 176   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 177
 178   if (GTK_WIDGET_DRAWABLE (widget))
 179     {
 180       gint border_width;
 181       gint interior_focus;
 182
 183       gtk_widget_style_get (widget, "interior_focus", &interior_focus, NULL);
 184
 185       gtk_check_button_draw_indicator (check_button, area);
 186
 187       border_width = GTK_CONTAINER (widget)->border_width;
 188       if (GTK_WIDGET_HAS_FOCUS (widget))
 189         {
 190           if (interior_focus)
 191             {
 192               GtkWidget *child = GTK_BIN (widget)->child;
 193
 194               if (child && GTK_WIDGET_VISIBLE (child))
 195                 gtk_paint_focus (widget->style, widget->window,
 196                                  NULL, widget, "checkbutton",
 197                                  child->allocation.x - 1,
 198                                  child->allocation.y - 1,
 199                                  child->allocation.width + 1,
 200                                  child->allocation.height + 1);
 201             }
 202           else
 203             gtk_paint_focus (widget->style, widget->window,
 204                              NULL, widget, "checkbutton",
 205                              border_width + widget->allocation.x,
 206                              border_width + widget->allocation.y,
 207                              widget->allocation.width - 2 * border_width - 1,
 208                              widget->allocation.height - 2 * border_width - 1);
 209         }
 210     }
 211 }
 212
 213 void
 214 _gtk_check_button_get_props (GtkCheckButton *check_button,
 215                              gint           *indicator_size,
 216                              gint           *indicator_spacing)
 217 {
 218   GtkWidget *widget =  GTK_WIDGET (check_button);
 219
 220   if (indicator_size)
 221     gtk_widget_style_get (widget, "indicator_size", indicator_size, NULL);
 222
 223   if (indicator_spacing)
 224     gtk_widget_style_get (widget, "indicator_spacing", indicator_spacing, NULL);
 225 }
 226
 227 static void
 228 gtk_check_button_size_request (GtkWidget      *widget,
 229                                GtkRequisition *requisition)
 230 {
 231   GtkToggleButton *toggle_button;
 232
 233   g_return_if_fail (widget != NULL);
 234   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 235   g_return_if_fail (requisition != NULL);
 236
 237   toggle_button = GTK_TOGGLE_BUTTON (widget);
 238
 239   if (toggle_button->draw_indicator)
 240     {
 241       GtkWidget *child;
 242       gint temp;
 243       gint indicator_size;
 244       gint indicator_spacing;
 245       gint border_width = GTK_CONTAINER (widget)->border_width;
 246
 247       requisition->width = border_width * 2 + 2;
 248       requisition->height = border_width * 2 + 2;
 249
 250       child = GTK_BIN (widget)->child;
 251       if (child && GTK_WIDGET_VISIBLE (child))
 252         {
 253           GtkRequisition child_requisition;
 254
 255           gtk_widget_size_request (child, &child_requisition);
 256
 257           requisition->width += child_requisition.width;
 258           requisition->height += child_requisition.height;
 259         }
 260
 261       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 262                                    &indicator_size, &indicator_spacing);
 263
 264       requisition->width += (indicator_size + indicator_spacing * 3 + 2);
 265
 266       temp = (indicator_size + indicator_spacing * 2);
 267       requisition->height = MAX (requisition->height, temp) + 2;
 268     }
 269   else
 270     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 271 }
 272
 273 static void
 274 gtk_check_button_size_allocate (GtkWidget     *widget,
 275                                 GtkAllocation *allocation)
 276 {
 277   GtkCheckButton *check_button;
 278   GtkToggleButton *toggle_button;
 279   GtkButton *button;
 280   GtkAllocation child_allocation;
 281
 282   g_return_if_fail (widget != NULL);
 283   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 284   g_return_if_fail (allocation != NULL);
 285
 286   check_button = GTK_CHECK_BUTTON (widget);
 287   toggle_button = GTK_TOGGLE_BUTTON (widget);
 288
 289   if (toggle_button->draw_indicator)
 290     {
 291       gint indicator_size;
 292       gint indicator_spacing;
 293
 294       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 295
 296       widget->allocation = *allocation;
 297       if (GTK_WIDGET_REALIZED (widget))
 298         gdk_window_move_resize (toggle_button->event_window,
 299                                 allocation->x, allocation->y,
 300                                 allocation->width, allocation->height);
 301
 302       button = GTK_BUTTON (widget);
 303
 304       if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 305         {
 306           gint border_width = GTK_CONTAINER (widget)->border_width;
 307
 308           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 + 1 +
 309                                 widget->allocation.x);
 310           child_allocation.y = border_width + 1 + widget->allocation.y;
 311           child_allocation.width = MAX (1, allocation->width -
 312                                         (border_width + indicator_size + indicator_spacing * 3 + 1) -
 313                                         border_width - 1);
 314           child_allocation.height = MAX (1, allocation->height - (border_width + 1) * 2);
 315
 316           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 317             child_allocation.x = allocation->x + allocation->width
 318               - (child_allocation.x - allocation->x + child_allocation.width);
 319
 320           gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 321         }
 322     }
 323   else
 324     (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 325 }
 326
 327 static gint
 328 gtk_check_button_expose (GtkWidget      *widget,
 329                          GdkEventExpose *event)
 330 {
 331   GtkCheckButton *check_button;
 332   GtkToggleButton *toggle_button;
 333   GtkBin *bin;
 334
 335   g_return_val_if_fail (widget != NULL, FALSE);
 336   g_return_val_if_fail (GTK_IS_CHECK_BUTTON (widget), FALSE);
 337   g_return_val_if_fail (event != NULL, FALSE);
 338
 339   check_button = GTK_CHECK_BUTTON (widget);
 340   toggle_button = GTK_TOGGLE_BUTTON (widget);
 341   bin = GTK_BIN (widget);
 342
 343   if (GTK_WIDGET_DRAWABLE (widget))
 344     {
 345       if (toggle_button->draw_indicator)
 346         {
 347           gtk_check_button_paint (widget, &event->area);
 348
 349           if (bin->child)
 350             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 351                                             bin->child,
 352                                             event);
 353         }
 354       else if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 355         (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 356     }
 357
 358   return FALSE;
 359 }
 360
 361
 362 static void
 363 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 364                                  GdkRectangle   *area)
 365 {
 366   GtkCheckButtonClass *class;
 367
 368   g_return_if_fail (check_button != NULL);
 369   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 370
 371   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 372
 373   if (class->draw_indicator)
 374     (* class->draw_indicator) (check_button, area);
 375 }
 376
 377 static void
 378 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 379                                       GdkRectangle   *area)
 380 {
 381   GtkWidget *widget;
 382   GtkToggleButton *toggle_button;
 383   GtkStateType state_type;
 384   GtkShadowType shadow_type;
 385   GdkRectangle restrict_area;
 386   GdkRectangle new_area;
 387   gint width, height;
 388   gint x, y;
 389   gint indicator_size;
 390   gint indicator_spacing;
 391   GdkWindow *window;
 392
 393   g_return_if_fail (check_button != NULL);
 394   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 395
 396   widget = GTK_WIDGET (check_button);
 397   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 398
 399   if (GTK_WIDGET_DRAWABLE (check_button))
 400     {
 401       window = widget->window;
 402
 403       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 404
 405       state_type = GTK_WIDGET_STATE (widget);
 406       if (state_type != GTK_STATE_NORMAL &&
 407           state_type != GTK_STATE_PRELIGHT)
 408         state_type = GTK_STATE_NORMAL;
 409
 410       restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
 411       restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
 412       restrict_area.width = widget->allocation.width - ( 2 * GTK_CONTAINER (widget)->border_width);
 413       restrict_area.height = widget->allocation.height - ( 2 * GTK_CONTAINER (widget)->border_width);
 414
 415       if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 416         {
 417           if (state_type != GTK_STATE_NORMAL)
 418             gtk_paint_flat_box (widget->style, window, state_type,
 419                                 GTK_SHADOW_ETCHED_OUT,
 420                                 area, widget, "checkbutton",
 421                                 new_area.x, new_area.y,
 422                                 new_area.width, new_area.height);
 423         }
 424
 425       x = widget->allocation.x + indicator_spacing + GTK_CONTAINER (widget)->border_width;
 426       y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;
 427       width = indicator_size;
 428       height = indicator_size;
 429
 430       if (GTK_TOGGLE_BUTTON (widget)->inconsistent)
 431         {
 432           state_type = GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE ? GTK_STATE_NORMAL : GTK_WIDGET_STATE (widget);
 433           shadow_type = GTK_SHADOW_ETCHED_IN;
 434         }
 435       else if (GTK_TOGGLE_BUTTON (widget)->active)
 436         {
 437           state_type = GTK_STATE_ACTIVE;
 438           shadow_type = GTK_SHADOW_IN;
 439         }
 440       else
 441         {
 442           shadow_type = GTK_SHADOW_OUT;
 443           state_type = GTK_WIDGET_STATE (widget);
 444         }
 445
 446       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 447         x = widget->allocation.x + widget->allocation.width - (width + x - widget->allocation.x);
 448
 449       gtk_paint_check (widget->style, window,
 450                        state_type, shadow_type,
 451                        area, widget, "checkbutton",
 452                        x, y, width, height);
 453     }
 454 }