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   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 130 }
 131
 132 /**
 133  * gtk_check_button_new_with_mnemonic:
 134  * @label: The text of the button, with an underscore in front of the
 135  *         mnemonic character
 136  * @returns: a new #GtkCheckButton
 137  *
 138  * Creates a new #GtkCheckButton containing a label. The label
 139  * will be created using gtk_label_new_with_mnemonic(), so underscores
 140  * in @label indicate the mnemonic for the check button.
 141  **/
 142 GtkWidget*
 143 gtk_check_button_new_with_mnemonic (const gchar *label)
 144 {
 145   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, "use_underline", TRUE, NULL);
 146 }
 147
 148
 149 /* This should only be called when toggle_button->draw_indicator
 150  * is true.
 151  */
 152 static void
 153 gtk_check_button_paint (GtkWidget    *widget,
 154                         GdkRectangle *area)
 155 {
 156   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 157
 158   if (GTK_WIDGET_DRAWABLE (widget))
 159     {
 160       gint border_width;
 161       gint interior_focus;
 162
 163       gtk_widget_style_get (widget, "interior_focus", &interior_focus, NULL);
 164
 165       gtk_check_button_draw_indicator (check_button, area);
 166
 167       border_width = GTK_CONTAINER (widget)->border_width;
 168       if (GTK_WIDGET_HAS_FOCUS (widget))
 169         {
 170           if (interior_focus)
 171             {
 172               GtkWidget *child = GTK_BIN (widget)->child;
 173
 174               if (child && GTK_WIDGET_VISIBLE (child))
 175                 gtk_paint_focus (widget->style, widget->window,
 176                                  NULL, widget, "checkbutton",
 177                                  child->allocation.x - 1,
 178                                  child->allocation.y - 1,
 179                                  child->allocation.width + 1,
 180                                  child->allocation.height + 1);
 181             }
 182           else
 183             gtk_paint_focus (widget->style, widget->window,
 184                              NULL, widget, "checkbutton",
 185                              border_width + widget->allocation.x,
 186                              border_width + widget->allocation.y,
 187                              widget->allocation.width - 2 * border_width - 1,
 188                              widget->allocation.height - 2 * border_width - 1);
 189         }
 190     }
 191 }
 192
 193 void
 194 _gtk_check_button_get_props (GtkCheckButton *check_button,
 195                              gint           *indicator_size,
 196                              gint           *indicator_spacing)
 197 {
 198   GtkWidget *widget =  GTK_WIDGET (check_button);
 199
 200   if (indicator_size)
 201     gtk_widget_style_get (widget, "indicator_size", indicator_size, NULL);
 202
 203   if (indicator_spacing)
 204     gtk_widget_style_get (widget, "indicator_spacing", indicator_spacing, NULL);
 205 }
 206
 207 static void
 208 gtk_check_button_size_request (GtkWidget      *widget,
 209                                GtkRequisition *requisition)
 210 {
 211   GtkToggleButton *toggle_button;
 212
 213   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 214   g_return_if_fail (requisition != NULL);
 215
 216   toggle_button = GTK_TOGGLE_BUTTON (widget);
 217
 218   if (toggle_button->draw_indicator)
 219     {
 220       GtkWidget *child;
 221       gint temp;
 222       gint indicator_size;
 223       gint indicator_spacing;
 224       gint border_width = GTK_CONTAINER (widget)->border_width;
 225
 226       requisition->width = border_width * 2 + 2;
 227       requisition->height = border_width * 2 + 2;
 228
 229       child = GTK_BIN (widget)->child;
 230       if (child && GTK_WIDGET_VISIBLE (child))
 231         {
 232           GtkRequisition child_requisition;
 233
 234           gtk_widget_size_request (child, &child_requisition);
 235
 236           requisition->width += child_requisition.width;
 237           requisition->height += child_requisition.height;
 238         }
 239
 240       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 241                                    &indicator_size, &indicator_spacing);
 242
 243       requisition->width += (indicator_size + indicator_spacing * 3 + 2);
 244
 245       temp = (indicator_size + indicator_spacing * 2);
 246       requisition->height = MAX (requisition->height, temp) + 2;
 247     }
 248   else
 249     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 250 }
 251
 252 static void
 253 gtk_check_button_size_allocate (GtkWidget     *widget,
 254                                 GtkAllocation *allocation)
 255 {
 256   GtkCheckButton *check_button;
 257   GtkToggleButton *toggle_button;
 258   GtkButton *button;
 259   GtkAllocation child_allocation;
 260
 261   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 262   g_return_if_fail (allocation != NULL);
 263
 264   check_button = GTK_CHECK_BUTTON (widget);
 265   toggle_button = GTK_TOGGLE_BUTTON (widget);
 266
 267   if (toggle_button->draw_indicator)
 268     {
 269       gint indicator_size;
 270       gint indicator_spacing;
 271
 272       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 273
 274       widget->allocation = *allocation;
 275       if (GTK_WIDGET_REALIZED (widget))
 276         gdk_window_move_resize (toggle_button->event_window,
 277                                 allocation->x, allocation->y,
 278                                 allocation->width, allocation->height);
 279
 280       button = GTK_BUTTON (widget);
 281
 282       if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 283         {
 284           gint border_width = GTK_CONTAINER (widget)->border_width;
 285
 286           child_allocation.width = MIN (GTK_BIN (button)->child->requisition.width,
 287                                         allocation->width -
 288                                         ((border_width + 1) * 2 + indicator_size + indicator_spacing * 3));
 289           child_allocation.height = MIN (GTK_BIN (button)->child->requisition.height,
 290                                          allocation->height - (border_width + 1) * 2);
 291           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 + 1 +
 292                                 widget->allocation.x);
 293           child_allocation.y = widget->allocation.y +
 294                                (allocation->height - child_allocation.height) / 2;
 295
 296
 297           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 298             child_allocation.x = allocation->x + allocation->width
 299               - (child_allocation.x - allocation->x + child_allocation.width);
 300
 301           gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 302         }
 303     }
 304   else
 305     (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 306 }
 307
 308 static gint
 309 gtk_check_button_expose (GtkWidget      *widget,
 310                          GdkEventExpose *event)
 311 {
 312   GtkCheckButton *check_button;
 313   GtkToggleButton *toggle_button;
 314   GtkBin *bin;
 315
 316   g_return_val_if_fail (widget != NULL, FALSE);
 317   g_return_val_if_fail (GTK_IS_CHECK_BUTTON (widget), FALSE);
 318   g_return_val_if_fail (event != NULL, FALSE);
 319
 320   check_button = GTK_CHECK_BUTTON (widget);
 321   toggle_button = GTK_TOGGLE_BUTTON (widget);
 322   bin = GTK_BIN (widget);
 323
 324   if (GTK_WIDGET_DRAWABLE (widget))
 325     {
 326       if (toggle_button->draw_indicator)
 327         {
 328           gtk_check_button_paint (widget, &event->area);
 329
 330           if (bin->child)
 331             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 332                                             bin->child,
 333                                             event);
 334         }
 335       else if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 336         (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 337     }
 338
 339   return FALSE;
 340 }
 341
 342
 343 static void
 344 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 345                                  GdkRectangle   *area)
 346 {
 347   GtkCheckButtonClass *class;
 348
 349   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 350
 351   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 352
 353   if (class->draw_indicator)
 354     (* class->draw_indicator) (check_button, area);
 355 }
 356
 357 static void
 358 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 359                                       GdkRectangle   *area)
 360 {
 361   GtkWidget *widget;
 362   GtkToggleButton *toggle_button;
 363   GtkStateType state_type;
 364   GtkShadowType shadow_type;
 365   GdkRectangle restrict_area;
 366   GdkRectangle new_area;
 367   gint width, height;
 368   gint x, y;
 369   gint indicator_size;
 370   gint indicator_spacing;
 371   GdkWindow *window;
 372
 373   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 374
 375   widget = GTK_WIDGET (check_button);
 376   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 377
 378   if (GTK_WIDGET_DRAWABLE (check_button))
 379     {
 380       window = widget->window;
 381
 382       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 383
 384       state_type = GTK_WIDGET_STATE (widget);
 385       if (state_type != GTK_STATE_NORMAL &&
 386           state_type != GTK_STATE_PRELIGHT)
 387         state_type = GTK_STATE_NORMAL;
 388
 389       restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
 390       restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
 391       restrict_area.width = widget->allocation.width - ( 2 * GTK_CONTAINER (widget)->border_width);
 392       restrict_area.height = widget->allocation.height - ( 2 * GTK_CONTAINER (widget)->border_width);
 393
 394       if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 395         {
 396           if (state_type != GTK_STATE_NORMAL)
 397             gtk_paint_flat_box (widget->style, window, state_type,
 398                                 GTK_SHADOW_ETCHED_OUT,
 399                                 area, widget, "checkbutton",
 400                                 new_area.x, new_area.y,
 401                                 new_area.width, new_area.height);
 402         }
 403
 404       x = widget->allocation.x + indicator_spacing + GTK_CONTAINER (widget)->border_width;
 405       y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;
 406       width = indicator_size;
 407       height = indicator_size;
 408
 409       state_type = GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE ? GTK_STATE_NORMAL : GTK_WIDGET_STATE (widget);
 410       if (GTK_TOGGLE_BUTTON (widget)->inconsistent)
 411         shadow_type = GTK_SHADOW_ETCHED_IN;
 412       else if (GTK_TOGGLE_BUTTON (widget)->active)
 413         shadow_type = GTK_SHADOW_IN;
 414       else
 415         shadow_type = GTK_SHADOW_OUT;
 416
 417       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 418         x = widget->allocation.x + widget->allocation.width - (width + x - widget->allocation.x);
 419
 420       gtk_paint_check (widget->style, window,
 421                        state_type, shadow_type,
 422                        area, widget, "checkbutton",
 423                        x, y, width, height);
 424     }
 425 }