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