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