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
  29 #include "gtkcheckbutton.h"
  30
  31 #include "gtklabel.h"
  32 #include "gtksizerequest.h"
  33
  34 #include "gtkprivate.h"
  35 #include "gtkintl.h"
  36
  37
  38 #define INDICATOR_SIZE     13
  39 #define INDICATOR_SPACING  2
  40
  41
  42 static void gtk_check_button_size_request        (GtkWidget           *widget,
  43                                                   GtkRequisition      *requisition);
  44 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  45                                                   GtkAllocation       *allocation);
  46 static gint gtk_check_button_expose              (GtkWidget           *widget,
  47                                                   GdkEventExpose      *event);
  48 static void gtk_check_button_paint               (GtkWidget           *widget,
  49                                                   GdkRectangle        *area);
  50 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  51                                                   GdkRectangle        *area);
  52 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  53                                                   GdkRectangle        *area);
  54
  55 G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
  56
  57 static void
  58 gtk_check_button_class_init (GtkCheckButtonClass *class)
  59 {
  60   GtkWidgetClass *widget_class;
  61
  62   widget_class = (GtkWidgetClass*) class;
  63
  64   widget_class->size_request = gtk_check_button_size_request;
  65   widget_class->size_allocate = gtk_check_button_size_allocate;
  66   widget_class->expose_event = gtk_check_button_expose;
  67
  68   class->draw_indicator = gtk_real_check_button_draw_indicator;
  69
  70   gtk_widget_class_install_style_property (widget_class,
  71                                            g_param_spec_int ("indicator-size",
  72                                                              P_("Indicator Size"),
  73                                                              P_("Size of check or radio indicator"),
  74                                                              0,
  75                                                              G_MAXINT,
  76                                                              INDICATOR_SIZE,
  77                                                              GTK_PARAM_READABLE));
  78   gtk_widget_class_install_style_property (widget_class,
  79                                            g_param_spec_int ("indicator-spacing",
  80                                                              P_("Indicator Spacing"),
  81                                                              P_("Spacing around check or radio indicator"),
  82                                                              0,
  83                                                              G_MAXINT,
  84                                                              INDICATOR_SPACING,
  85                                                              GTK_PARAM_READABLE));
  86 }
  87
  88 static void
  89 gtk_check_button_init (GtkCheckButton *check_button)
  90 {
  91   gtk_widget_set_has_window (GTK_WIDGET (check_button), FALSE);
  92   gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
  93   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
  94   GTK_BUTTON (check_button)->depress_on_activate = FALSE;
  95 }
  96
  97 GtkWidget*
  98 gtk_check_button_new (void)
  99 {
 100   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
 101 }
 102
 103
 104 GtkWidget*
 105 gtk_check_button_new_with_label (const gchar *label)
 106 {
 107   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 108 }
 109
 110 /**
 111  * gtk_check_button_new_with_mnemonic:
 112  * @label: The text of the button, with an underscore in front of the
 113  *         mnemonic character
 114  * @returns: a new #GtkCheckButton
 115  *
 116  * Creates a new #GtkCheckButton containing a label. The label
 117  * will be created using gtk_label_new_with_mnemonic(), so underscores
 118  * in @label indicate the mnemonic for the check button.
 119  **/
 120 GtkWidget*
 121 gtk_check_button_new_with_mnemonic (const gchar *label)
 122 {
 123   return g_object_new (GTK_TYPE_CHECK_BUTTON,
 124                        "label", label,
 125                        "use-underline", TRUE,
 126                        NULL);
 127 }
 128
 129
 130 /* This should only be called when toggle_button->draw_indicator
 131  * is true.
 132  */
 133 static void
 134 gtk_check_button_paint (GtkWidget    *widget,
 135                         GdkRectangle *area)
 136 {
 137   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 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_get_border_width (GTK_CONTAINER (widget));
 152   if (gtk_widget_has_focus (widget))
 153     {
 154       GtkStateType state;
 155       GtkStyle *style;
 156       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 157       GdkWindow *window;
 158
 159       style = gtk_widget_get_style (widget);
 160       window = gtk_widget_get_window (widget);
 161       state = gtk_widget_get_state (widget);
 162
 163       if (interior_focus && child && gtk_widget_get_visible (child))
 164         {
 165           GtkAllocation child_allocation;
 166
 167           gtk_widget_get_allocation (child, &child_allocation);
 168           gtk_paint_focus (style, window, state,
 169                            area, widget, "checkbutton",
 170                            child_allocation.x - focus_width - focus_pad,
 171                            child_allocation.y - focus_width - focus_pad,
 172                            child_allocation.width + 2 * (focus_width + focus_pad),
 173                            child_allocation.height + 2 * (focus_width + focus_pad));
 174         }
 175       else
 176         {
 177           GtkAllocation allocation;
 178
 179           gtk_widget_get_allocation (widget, &allocation);
 180           gtk_paint_focus (style, window, state,
 181                            area, widget, "checkbutton",
 182                            allocation.x + border_width,
 183                            allocation.y + border_width,
 184                            allocation.width - 2 * border_width,
 185                            allocation.height - 2 * border_width);
 186         }
 187     }
 188 }
 189
 190 void
 191 _gtk_check_button_get_props (GtkCheckButton *check_button,
 192                              gint           *indicator_size,
 193                              gint           *indicator_spacing)
 194 {
 195   GtkWidget *widget =  GTK_WIDGET (check_button);
 196
 197   if (indicator_size)
 198     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
 199
 200   if (indicator_spacing)
 201     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 202 }
 203
 204 static void
 205 gtk_check_button_size_request (GtkWidget      *widget,
 206                                GtkRequisition *requisition)
 207 {
 208   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 209
 210   if (toggle_button->draw_indicator)
 211     {
 212       GtkWidget *child;
 213       gint temp;
 214       gint indicator_size;
 215       gint indicator_spacing;
 216       gint focus_width;
 217       gint focus_pad;
 218       guint border_width;
 219
 220       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 221
 222       gtk_widget_style_get (GTK_WIDGET (widget),
 223                             "focus-line-width", &focus_width,
 224                             "focus-padding", &focus_pad,
 225                             NULL);
 226
 227       requisition->width = border_width * 2;
 228       requisition->height = border_width * 2;
 229
 230       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 231                                    &indicator_size, &indicator_spacing);
 232
 233       child = gtk_bin_get_child (GTK_BIN (widget));
 234       if (child && gtk_widget_get_visible (child))
 235         {
 236           GtkRequisition child_requisition;
 237
 238           gtk_size_request_get_size (GTK_SIZE_REQUEST (child),
 239                                      &child_requisition, NULL);
 240
 241           requisition->width += child_requisition.width + indicator_spacing;
 242           requisition->height += child_requisition.height;
 243         }
 244
 245       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 246
 247       temp = indicator_size + indicator_spacing * 2;
 248       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 249     }
 250   else
 251     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_request (widget, requisition);
 252 }
 253
 254 static void
 255 gtk_check_button_size_allocate (GtkWidget     *widget,
 256                                 GtkAllocation *allocation)
 257 {
 258   GtkCheckButton *check_button;
 259   GtkToggleButton *toggle_button;
 260   GtkButton *button;
 261   GtkAllocation child_allocation;
 262
 263   button = GTK_BUTTON (widget);
 264   check_button = GTK_CHECK_BUTTON (widget);
 265   toggle_button = GTK_TOGGLE_BUTTON (widget);
 266
 267   if (toggle_button->draw_indicator)
 268     {
 269       GtkWidget *child;
 270       gint indicator_size;
 271       gint indicator_spacing;
 272       gint focus_width;
 273       gint focus_pad;
 274
 275       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 276       gtk_widget_style_get (widget,
 277                             "focus-line-width", &focus_width,
 278                             "focus-padding", &focus_pad,
 279                             NULL);
 280
 281       gtk_widget_set_allocation (widget, allocation);
 282
 283       if (gtk_widget_get_realized (widget))
 284         gdk_window_move_resize (button->event_window,
 285                                 allocation->x, allocation->y,
 286                                 allocation->width, allocation->height);
 287
 288       child = gtk_bin_get_child (GTK_BIN (button));
 289       if (child && gtk_widget_get_visible (child))
 290         {
 291           GtkRequisition child_requisition;
 292           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 293
 294           gtk_size_request_get_size (GTK_SIZE_REQUEST (child),
 295                                      &child_requisition, NULL);
 296
 297           child_allocation.width = MIN (child_requisition.width,
 298                                         allocation->width -
 299                                         ((border_width + focus_width + focus_pad) * 2
 300                                          + indicator_size + indicator_spacing * 3));
 301           child_allocation.width = MAX (child_allocation.width, 1);
 302
 303           child_allocation.height = MIN (child_requisition.height,
 304                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 305           child_allocation.height = MAX (child_allocation.height, 1);
 306
 307           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 308                                 allocation->x + focus_width + focus_pad);
 309           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
 310
 311           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 312             child_allocation.x = allocation->x + allocation->width
 313               - (child_allocation.x - allocation->x + child_allocation.width);
 314
 315           gtk_widget_size_allocate (child, &child_allocation);
 316         }
 317     }
 318   else
 319     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 320 }
 321
 322 static gint
 323 gtk_check_button_expose (GtkWidget      *widget,
 324                          GdkEventExpose *event)
 325 {
 326   GtkToggleButton *toggle_button;
 327   GtkBin *bin;
 328   GtkWidget *child;
 329
 330   toggle_button = GTK_TOGGLE_BUTTON (widget);
 331   bin = GTK_BIN (widget);
 332
 333   if (gtk_widget_is_drawable (widget))
 334     {
 335       if (toggle_button->draw_indicator)
 336         {
 337           gtk_check_button_paint (widget, &event->area);
 338
 339           child = gtk_bin_get_child (bin);
 340           if (child)
 341             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 342                                             child,
 343                                             event);
 344         }
 345       else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event)
 346         GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event (widget, event);
 347     }
 348
 349   return FALSE;
 350 }
 351
 352
 353 static void
 354 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 355                                  GdkRectangle   *area)
 356 {
 357   GtkCheckButtonClass *class;
 358
 359   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 360
 361   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 362
 363   if (class->draw_indicator)
 364     class->draw_indicator (check_button, area);
 365 }
 366
 367 static void
 368 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 369                                       GdkRectangle   *area)
 370 {
 371   GtkWidget *widget;
 372   GtkWidget *child;
 373   GtkButton *button;
 374   GtkToggleButton *toggle_button;
 375   GtkStateType state_type;
 376   GtkShadowType shadow_type;
 377   gint x, y;
 378   gint indicator_size;
 379   gint indicator_spacing;
 380   gint focus_width;
 381   gint focus_pad;
 382   guint border_width;
 383   gboolean interior_focus;
 384   GtkAllocation allocation;
 385   GtkStyle *style;
 386   GdkWindow *window;
 387
 388   widget = GTK_WIDGET (check_button);
 389   button = GTK_BUTTON (check_button);
 390   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 391
 392   gtk_widget_get_allocation (widget, &allocation);
 393   style = gtk_widget_get_style (widget);
 394   window = gtk_widget_get_window (widget);
 395
 396   gtk_widget_style_get (widget,
 397                         "interior-focus", &interior_focus,
 398                         "focus-line-width", &focus_width,
 399                         "focus-padding", &focus_pad,
 400                         NULL);
 401
 402   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 403
 404   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 405
 406   x = allocation.x + indicator_spacing + border_width;
 407   y = allocation.y + (allocation.height - indicator_size) / 2;
 408
 409   child = gtk_bin_get_child (GTK_BIN (check_button));
 410   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 411     x += focus_width + focus_pad;
 412
 413   if (toggle_button->inconsistent)
 414     shadow_type = GTK_SHADOW_ETCHED_IN;
 415   else if (toggle_button->active)
 416     shadow_type = GTK_SHADOW_IN;
 417   else
 418     shadow_type = GTK_SHADOW_OUT;
 419
 420   if (button->activate_timeout || (button->button_down && button->in_button))
 421     state_type = GTK_STATE_ACTIVE;
 422   else if (button->in_button)
 423     state_type = GTK_STATE_PRELIGHT;
 424   else if (!gtk_widget_is_sensitive (widget))
 425     state_type = GTK_STATE_INSENSITIVE;
 426   else
 427     state_type = GTK_STATE_NORMAL;
 428
 429   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 430     x = allocation.x + allocation.width - (indicator_size + x - allocation.x);
 431
 432   if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 433     {
 434       GdkRectangle restrict_area;
 435       GdkRectangle new_area;
 436
 437       restrict_area.x = allocation.x + border_width;
 438       restrict_area.y = allocation.y + border_width;
 439       restrict_area.width = allocation.width - (2 * border_width);
 440       restrict_area.height = allocation.height - (2 * border_width);
 441
 442       if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 443         {
 444           gtk_paint_flat_box (style, window, GTK_STATE_PRELIGHT,
 445                               GTK_SHADOW_ETCHED_OUT,
 446                               area, widget, "checkbutton",
 447                               new_area.x, new_area.y,
 448                               new_area.width, new_area.height);
 449         }
 450     }
 451
 452   gtk_paint_check (style, window,
 453                    state_type, shadow_type,
 454                    area, widget, "checkbutton",
 455                    x, y, indicator_size, indicator_size);
 456 }