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 "gtkintl.h"
  30 #include "gtklabel.h"
  31
  32
  33 #define INDICATOR_SIZE     13
  34 #define INDICATOR_SPACING  2
  35
  36
  37 static void gtk_check_button_class_init          (GtkCheckButtonClass *klass);
  38 static void gtk_check_button_init                (GtkCheckButton      *check_button);
  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 static GtkToggleButtonClass *parent_class = NULL;
  53
  54
  55 GType
  56 gtk_check_button_get_type (void)
  57 {
  58   static GType check_button_type = 0;
  59
  60   if (!check_button_type)
  61     {
  62       static const GTypeInfo check_button_info =
  63       {
  64         sizeof (GtkCheckButtonClass),
  65         NULL,           /* base_init */
  66         NULL,           /* base_finalize */
  67         (GClassInitFunc) gtk_check_button_class_init,
  68         NULL,           /* class_finalize */
  69         NULL,           /* class_data */
  70         sizeof (GtkCheckButton),
  71         0,              /* n_preallocs */
  72         (GInstanceInitFunc) gtk_check_button_init,
  73       };
  74
  75       check_button_type =
  76         g_type_register_static (GTK_TYPE_TOGGLE_BUTTON, "GtkCheckButton",
  77                                 &check_button_info, 0);
  78     }
  79
  80   return check_button_type;
  81 }
  82
  83 static void
  84 gtk_check_button_class_init (GtkCheckButtonClass *class)
  85 {
  86   GtkWidgetClass *widget_class;
  87
  88   widget_class = (GtkWidgetClass*) class;
  89   parent_class = g_type_class_peek_parent (class);
  90
  91   widget_class->size_request = gtk_check_button_size_request;
  92   widget_class->size_allocate = gtk_check_button_size_allocate;
  93   widget_class->expose_event = gtk_check_button_expose;
  94
  95   class->draw_indicator = gtk_real_check_button_draw_indicator;
  96
  97   gtk_widget_class_install_style_property (widget_class,
  98                                            g_param_spec_int ("indicator_size",
  99                                                              P_("Indicator Size"),
 100                                                              P_("Size of check or radio indicator"),
 101                                                              0,
 102                                                              G_MAXINT,
 103                                                              INDICATOR_SIZE,
 104                                                              G_PARAM_READABLE));
 105   gtk_widget_class_install_style_property (widget_class,
 106                                            g_param_spec_int ("indicator_spacing",
 107                                                              P_("Indicator Spacing"),
 108                                                              P_("Spacing around check or radio indicator"),
 109                                                              0,
 110                                                              G_MAXINT,
 111                                                              INDICATOR_SPACING,
 112                                                              G_PARAM_READABLE));
 113 }
 114
 115 static void
 116 gtk_check_button_init (GtkCheckButton *check_button)
 117 {
 118   GTK_WIDGET_SET_FLAGS (check_button, GTK_NO_WINDOW);
 119   GTK_WIDGET_UNSET_FLAGS (check_button, GTK_RECEIVES_DEFAULT);
 120   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
 121   GTK_BUTTON (check_button)->depress_on_activate = FALSE;
 122 }
 123
 124 GtkWidget*
 125 gtk_check_button_new (void)
 126 {
 127   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
 128 }
 129
 130
 131 GtkWidget*
 132 gtk_check_button_new_with_label (const gchar *label)
 133 {
 134   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 135 }
 136
 137 /**
 138  * gtk_check_button_new_with_mnemonic:
 139  * @label: The text of the button, with an underscore in front of the
 140  *         mnemonic character
 141  * @returns: a new #GtkCheckButton
 142  *
 143  * Creates a new #GtkCheckButton containing a label. The label
 144  * will be created using gtk_label_new_with_mnemonic(), so underscores
 145  * in @label indicate the mnemonic for the check button.
 146  **/
 147 GtkWidget*
 148 gtk_check_button_new_with_mnemonic (const gchar *label)
 149 {
 150   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, "use_underline", TRUE, NULL);
 151 }
 152
 153
 154 /* This should only be called when toggle_button->draw_indicator
 155  * is true.
 156  */
 157 static void
 158 gtk_check_button_paint (GtkWidget    *widget,
 159                         GdkRectangle *area)
 160 {
 161   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 162
 163   if (GTK_WIDGET_DRAWABLE (widget))
 164     {
 165       gint border_width;
 166       gint interior_focus;
 167       gint focus_width;
 168       gint focus_pad;
 169
 170       gtk_widget_style_get (widget,
 171                             "interior-focus", &interior_focus,
 172                             "focus-line-width", &focus_width,
 173                             "focus-padding", &focus_pad,
 174                             NULL);
 175
 176       gtk_check_button_draw_indicator (check_button, area);
 177
 178       border_width = GTK_CONTAINER (widget)->border_width;
 179       if (GTK_WIDGET_HAS_FOCUS (widget))
 180         {
 181           GtkWidget *child = GTK_BIN (widget)->child;
 182
 183           if (interior_focus && child && GTK_WIDGET_VISIBLE (child))
 184             gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 185                              NULL, widget, "checkbutton",
 186                              child->allocation.x - focus_width - focus_pad,
 187                              child->allocation.y - focus_width - focus_pad,
 188                              child->allocation.width + 2 * (focus_width + focus_pad),
 189                              child->allocation.height + 2 * (focus_width + focus_pad));
 190           else
 191             gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget),
 192                              NULL, widget, "checkbutton",
 193                              border_width + widget->allocation.x,
 194                              border_width + widget->allocation.y,
 195                              widget->allocation.width - 2 * border_width,
 196                              widget->allocation.height - 2 * border_width);
 197         }
 198     }
 199 }
 200
 201 void
 202 _gtk_check_button_get_props (GtkCheckButton *check_button,
 203                              gint           *indicator_size,
 204                              gint           *indicator_spacing)
 205 {
 206   GtkWidget *widget =  GTK_WIDGET (check_button);
 207
 208   if (indicator_size)
 209     gtk_widget_style_get (widget, "indicator_size", indicator_size, NULL);
 210
 211   if (indicator_spacing)
 212     gtk_widget_style_get (widget, "indicator_spacing", indicator_spacing, NULL);
 213 }
 214
 215 static void
 216 gtk_check_button_size_request (GtkWidget      *widget,
 217                                GtkRequisition *requisition)
 218 {
 219   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 220
 221   if (toggle_button->draw_indicator)
 222     {
 223       GtkWidget *child;
 224       gint temp;
 225       gint indicator_size;
 226       gint indicator_spacing;
 227       gint border_width = GTK_CONTAINER (widget)->border_width;
 228       gint focus_width;
 229       gint focus_pad;
 230
 231       gtk_widget_style_get (GTK_WIDGET (widget),
 232                             "focus-line-width", &focus_width,
 233                             "focus-padding", &focus_pad,
 234                             NULL);
 235
 236       requisition->width = border_width * 2;
 237       requisition->height = border_width * 2;
 238
 239       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 240                                    &indicator_size, &indicator_spacing);
 241
 242       child = GTK_BIN (widget)->child;
 243       if (child && GTK_WIDGET_VISIBLE (child))
 244         {
 245           GtkRequisition child_requisition;
 246
 247           gtk_widget_size_request (child, &child_requisition);
 248
 249           requisition->width += child_requisition.width + indicator_spacing;
 250           requisition->height += child_requisition.height;
 251         }
 252
 253       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 254
 255       temp = indicator_size + indicator_spacing * 2;
 256       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 257     }
 258   else
 259     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 260 }
 261
 262 static void
 263 gtk_check_button_size_allocate (GtkWidget     *widget,
 264                                 GtkAllocation *allocation)
 265 {
 266   GtkCheckButton *check_button;
 267   GtkToggleButton *toggle_button;
 268   GtkButton *button;
 269   GtkAllocation child_allocation;
 270
 271   button = GTK_BUTTON (widget);
 272   check_button = GTK_CHECK_BUTTON (widget);
 273   toggle_button = GTK_TOGGLE_BUTTON (widget);
 274
 275   if (toggle_button->draw_indicator)
 276     {
 277       gint indicator_size;
 278       gint indicator_spacing;
 279       gint focus_width;
 280       gint focus_pad;
 281
 282       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 283       gtk_widget_style_get (widget,
 284                             "focus-line-width", &focus_width,
 285                             "focus-padding", &focus_pad,
 286                             NULL);
 287
 288       widget->allocation = *allocation;
 289       if (GTK_WIDGET_REALIZED (widget))
 290         gdk_window_move_resize (button->event_window,
 291                                 allocation->x, allocation->y,
 292                                 allocation->width, allocation->height);
 293
 294       if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 295         {
 296           GtkRequisition child_requisition;
 297           gint border_width = GTK_CONTAINER (widget)->border_width;
 298
 299           gtk_widget_get_child_requisition (GTK_BIN (button)->child, &child_requisition);
 300
 301           child_allocation.width = MIN (child_requisition.width,
 302                                         allocation->width -
 303                                         ((border_width + focus_width + focus_pad) * 2
 304                                          + indicator_size + indicator_spacing * 3));
 305           child_allocation.width = MAX (child_allocation.width, 1);
 306
 307           child_allocation.height = MIN (child_requisition.height,
 308                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 309           child_allocation.height = MAX (child_allocation.height, 1);
 310
 311           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 312                                 widget->allocation.x + focus_width + focus_pad);
 313           child_allocation.y = widget->allocation.y +
 314                   (allocation->height - child_allocation.height) / 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   check_button = GTK_CHECK_BUTTON (widget);
 336   toggle_button = GTK_TOGGLE_BUTTON (widget);
 337   bin = GTK_BIN (widget);
 338
 339   if (GTK_WIDGET_DRAWABLE (widget))
 340     {
 341       if (toggle_button->draw_indicator)
 342         {
 343           gtk_check_button_paint (widget, &event->area);
 344
 345           if (bin->child)
 346             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 347                                             bin->child,
 348                                             event);
 349         }
 350       else if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 351         (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 352     }
 353
 354   return FALSE;
 355 }
 356
 357
 358 static void
 359 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 360                                  GdkRectangle   *area)
 361 {
 362   GtkCheckButtonClass *class;
 363
 364   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 365
 366   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 367
 368   if (class->draw_indicator)
 369     (* class->draw_indicator) (check_button, area);
 370 }
 371
 372 static void
 373 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 374                                       GdkRectangle   *area)
 375 {
 376   GtkWidget *widget;
 377   GtkWidget *child;
 378   GtkButton *button;
 379   GtkToggleButton *toggle_button;
 380   GtkStateType state_type;
 381   GtkShadowType shadow_type;
 382   gint x, y;
 383   gint indicator_size;
 384   gint indicator_spacing;
 385   gint focus_width;
 386   gint focus_pad;
 387   gboolean interior_focus;
 388
 389   if (GTK_WIDGET_DRAWABLE (check_button))
 390     {
 391       widget = GTK_WIDGET (check_button);
 392       button = GTK_BUTTON (check_button);
 393       toggle_button = GTK_TOGGLE_BUTTON (check_button);
 394
 395       gtk_widget_style_get (widget, "interior_focus", &interior_focus,
 396                             "focus-line-width", &focus_width,
 397                             "focus-padding", &focus_pad, NULL);
 398
 399       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 400
 401       x = widget->allocation.x + indicator_spacing + GTK_CONTAINER (widget)->border_width;
 402       y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;
 403
 404       child = GTK_BIN (check_button)->child;
 405       if (!interior_focus || !(child && GTK_WIDGET_VISIBLE (child)))
 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 if (!GTK_WIDGET_IS_SENSITIVE (widget))
 420         state_type = GTK_STATE_INSENSITIVE;
 421       else
 422         state_type = GTK_STATE_NORMAL;
 423
 424       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 425         x = widget->allocation.x + widget->allocation.width - (indicator_size + x - widget->allocation.x);
 426
 427       if (GTK_WIDGET_STATE (toggle_button) == GTK_STATE_PRELIGHT)
 428         {
 429           GdkRectangle restrict_area;
 430           GdkRectangle new_area;
 431
 432           restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
 433           restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
 434           restrict_area.width = widget->allocation.width - (2 * GTK_CONTAINER (widget)->border_width);
 435           restrict_area.height = widget->allocation.height - (2 * GTK_CONTAINER (widget)->border_width);
 436
 437           if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 438             {
 439               gtk_paint_flat_box (widget->style, widget->window, GTK_STATE_PRELIGHT,
 440                                   GTK_SHADOW_ETCHED_OUT,
 441                                   area, widget, "checkbutton",
 442                                   new_area.x, new_area.y,
 443                                   new_area.width, new_area.height);
 444             }
 445         }
 446
 447       gtk_paint_check (widget->style, widget->window,
 448                        state_type, shadow_type,
 449                        area, widget, "checkbutton",
 450                        x, y, indicator_size, indicator_size);
 451     }
 452 }