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
  33 #include "gtkprivate.h"
  34 #include "gtkintl.h"
  35
  36
  37 #define INDICATOR_SIZE     13
  38 #define INDICATOR_SPACING  2
  39
  40
  41 static void gtk_check_button_get_preferred_width  (GtkWidget          *widget,
  42                                                    gint               *minimum,
  43                                                    gint               *natural);
  44 static void gtk_check_button_get_preferred_height (GtkWidget          *widget,
  45                                                    gint               *minimum,
  46                                                    gint               *natural);
  47 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  48                                                   GtkAllocation       *allocation);
  49 static gboolean gtk_check_button_draw            (GtkWidget           *widget,
  50                                                   cairo_t             *cr);
  51 static void gtk_check_button_paint               (GtkWidget           *widget,
  52                                                   cairo_t             *cr);
  53 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  54                                                   cairo_t             *cr);
  55 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  56                                                   cairo_t             *cr);
  57
  58 G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
  59
  60 static void
  61 gtk_check_button_class_init (GtkCheckButtonClass *class)
  62 {
  63   GtkWidgetClass *widget_class;
  64
  65   widget_class = (GtkWidgetClass*) class;
  66
  67   widget_class->get_preferred_width = gtk_check_button_get_preferred_width;
  68   widget_class->get_preferred_height = gtk_check_button_get_preferred_height;
  69   widget_class->size_allocate = gtk_check_button_size_allocate;
  70   widget_class->draw = gtk_check_button_draw;
  71
  72   class->draw_indicator = gtk_real_check_button_draw_indicator;
  73
  74   gtk_widget_class_install_style_property (widget_class,
  75                                            g_param_spec_int ("indicator-size",
  76                                                              P_("Indicator Size"),
  77                                                              P_("Size of check or radio indicator"),
  78                                                              0,
  79                                                              G_MAXINT,
  80                                                              INDICATOR_SIZE,
  81                                                              GTK_PARAM_READABLE));
  82   gtk_widget_class_install_style_property (widget_class,
  83                                            g_param_spec_int ("indicator-spacing",
  84                                                              P_("Indicator Spacing"),
  85                                                              P_("Spacing around check or radio indicator"),
  86                                                              0,
  87                                                              G_MAXINT,
  88                                                              INDICATOR_SPACING,
  89                                                              GTK_PARAM_READABLE));
  90 }
  91
  92 static void
  93 gtk_check_button_init (GtkCheckButton *check_button)
  94 {
  95   gtk_widget_set_has_window (GTK_WIDGET (check_button), FALSE);
  96   gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
  97   gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
  98 }
  99
 100 GtkWidget*
 101 gtk_check_button_new (void)
 102 {
 103   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
 104 }
 105
 106
 107 GtkWidget*
 108 gtk_check_button_new_with_label (const gchar *label)
 109 {
 110   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 111 }
 112
 113 /**
 114  * gtk_check_button_new_with_mnemonic:
 115  * @label: The text of the button, with an underscore in front of the
 116  *         mnemonic character
 117  * @returns: a new #GtkCheckButton
 118  *
 119  * Creates a new #GtkCheckButton containing a label. The label
 120  * will be created using gtk_label_new_with_mnemonic(), so underscores
 121  * in @label indicate the mnemonic for the check button.
 122  **/
 123 GtkWidget*
 124 gtk_check_button_new_with_mnemonic (const gchar *label)
 125 {
 126   return g_object_new (GTK_TYPE_CHECK_BUTTON,
 127                        "label", label,
 128                        "use-underline", TRUE,
 129                        NULL);
 130 }
 131
 132
 133 /* This should only be called when toggle_button->draw_indicator
 134  * is true.
 135  */
 136 static void
 137 gtk_check_button_paint (GtkWidget    *widget,
 138                         cairo_t      *cr)
 139 {
 140   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 141   gint border_width;
 142   gint interior_focus;
 143   gint focus_width;
 144   gint focus_pad;
 145
 146   gtk_widget_style_get (widget,
 147                         "interior-focus", &interior_focus,
 148                         "focus-line-width", &focus_width,
 149                         "focus-padding", &focus_pad,
 150                         NULL);
 151
 152   gtk_check_button_draw_indicator (check_button, cr);
 153
 154   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 155   if (gtk_widget_has_focus (widget))
 156     {
 157       GtkStateType state = gtk_widget_get_state (widget);
 158       GtkStyle *style = gtk_widget_get_style (widget);
 159       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 160       GtkAllocation allocation;
 161
 162       gtk_widget_get_allocation (widget, &allocation);
 163
 164       if (interior_focus && child && gtk_widget_get_visible (child))
 165         {
 166           GtkAllocation child_allocation;
 167
 168           gtk_widget_get_allocation (child, &child_allocation);
 169           gtk_paint_focus (style, cr, state,
 170                            widget, "checkbutton",
 171                            child_allocation.x - allocation.x - focus_width - focus_pad,
 172                            child_allocation.y - allocation.y - focus_width - focus_pad,
 173                            child_allocation.width + 2 * (focus_width + focus_pad),
 174                            child_allocation.height + 2 * (focus_width + focus_pad));
 175         }
 176       else
 177         {
 178           gtk_paint_focus (style, cr, state,
 179                            widget, "checkbutton",
 180                            border_width,
 181                            border_width,
 182                            allocation.width - 2 * border_width,
 183                            allocation.height - 2 * border_width);
 184         }
 185     }
 186 }
 187
 188 void
 189 _gtk_check_button_get_props (GtkCheckButton *check_button,
 190                              gint           *indicator_size,
 191                              gint           *indicator_spacing)
 192 {
 193   GtkWidget *widget =  GTK_WIDGET (check_button);
 194
 195   if (indicator_size)
 196     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
 197
 198   if (indicator_spacing)
 199     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 200 }
 201
 202 static void
 203 gtk_check_button_get_preferred_width (GtkWidget *widget,
 204                                       gint      *minimum,
 205                                       gint      *natural)
 206 {
 207   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 208
 209   if (gtk_toggle_button_get_mode (toggle_button))
 210     {
 211       GtkWidget *child;
 212       gint indicator_size;
 213       gint indicator_spacing;
 214       gint focus_width;
 215       gint focus_pad;
 216       guint border_width;
 217
 218       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 219
 220       gtk_widget_style_get (GTK_WIDGET (widget),
 221                             "focus-line-width", &focus_width,
 222                             "focus-padding", &focus_pad,
 223                             NULL);
 224       *minimum = 2 * border_width;
 225       *natural = 2 * border_width;
 226
 227       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 228                                    &indicator_size, &indicator_spacing);
 229
 230       child = gtk_bin_get_child (GTK_BIN (widget));
 231       if (child && gtk_widget_get_visible (child))
 232         {
 233           gint child_min, child_nat;
 234
 235           gtk_widget_get_preferred_width (child, &child_min, &child_nat);
 236
 237           *minimum += child_min + indicator_spacing;
 238           *natural += child_nat + indicator_spacing;
 239         }
 240
 241       *minimum += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 242       *natural += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 243     }
 244   else
 245     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_width (widget, minimum, natural);
 246 }
 247
 248 static void
 249 gtk_check_button_get_preferred_height (GtkWidget *widget,
 250                                        gint      *minimum,
 251                                        gint      *natural)
 252 {
 253   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 254
 255   if (gtk_toggle_button_get_mode (toggle_button))
 256     {
 257       GtkWidget *child;
 258       gint temp;
 259       gint indicator_size;
 260       gint indicator_spacing;
 261       gint focus_width;
 262       gint focus_pad;
 263       guint border_width;
 264
 265       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 266
 267       gtk_widget_style_get (GTK_WIDGET (widget),
 268                             "focus-line-width", &focus_width,
 269                             "focus-padding", &focus_pad,
 270                             NULL);
 271
 272       *minimum = border_width * 2;
 273       *natural = border_width * 2;
 274
 275       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 276                                    &indicator_size, &indicator_spacing);
 277
 278       child = gtk_bin_get_child (GTK_BIN (widget));
 279       if (child && gtk_widget_get_visible (child))
 280         {
 281           gint child_min, child_nat;
 282
 283           gtk_widget_get_preferred_height (child, &child_min, &child_nat);
 284
 285           *minimum += child_min;
 286           *natural += child_nat;
 287         }
 288
 289       temp = indicator_size + indicator_spacing * 2;
 290       *minimum = MAX (*minimum, temp) + 2 * (focus_width + focus_pad);
 291       *natural = MAX (*natural, temp) + 2 * (focus_width + focus_pad);
 292     }
 293   else
 294     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_height (widget, minimum, natural);
 295 }
 296
 297 static void
 298 gtk_check_button_size_allocate (GtkWidget     *widget,
 299                                 GtkAllocation *allocation)
 300 {
 301   GtkCheckButton *check_button;
 302   GtkToggleButton *toggle_button;
 303   GtkButton *button;
 304   GtkAllocation child_allocation;
 305
 306   button = GTK_BUTTON (widget);
 307   check_button = GTK_CHECK_BUTTON (widget);
 308   toggle_button = GTK_TOGGLE_BUTTON (widget);
 309
 310   if (gtk_toggle_button_get_mode (toggle_button))
 311     {
 312       GtkWidget *child;
 313       gint indicator_size;
 314       gint indicator_spacing;
 315       gint focus_width;
 316       gint focus_pad;
 317
 318       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 319       gtk_widget_style_get (widget,
 320                             "focus-line-width", &focus_width,
 321                             "focus-padding", &focus_pad,
 322                             NULL);
 323
 324       gtk_widget_set_allocation (widget, allocation);
 325
 326       if (gtk_widget_get_realized (widget))
 327         gdk_window_move_resize (gtk_button_get_event_window (button),
 328                                 allocation->x, allocation->y,
 329                                 allocation->width, allocation->height);
 330
 331       child = gtk_bin_get_child (GTK_BIN (button));
 332       if (child && gtk_widget_get_visible (child))
 333         {
 334           GtkRequisition child_requisition;
 335           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 336
 337           gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 338
 339           child_allocation.width = MIN (child_requisition.width,
 340                                         allocation->width -
 341                                         ((border_width + focus_width + focus_pad) * 2
 342                                          + indicator_size + indicator_spacing * 3));
 343           child_allocation.width = MAX (child_allocation.width, 1);
 344
 345           child_allocation.height = MIN (child_requisition.height,
 346                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 347           child_allocation.height = MAX (child_allocation.height, 1);
 348
 349           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 350                                 allocation->x + focus_width + focus_pad);
 351           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
 352
 353           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 354             child_allocation.x = allocation->x + allocation->width
 355               - (child_allocation.x - allocation->x + child_allocation.width);
 356
 357           gtk_widget_size_allocate (child, &child_allocation);
 358         }
 359     }
 360   else
 361     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 362 }
 363
 364 static gint
 365 gtk_check_button_draw (GtkWidget *widget,
 366                        cairo_t   *cr)
 367 {
 368   GtkToggleButton *toggle_button;
 369   GtkBin *bin;
 370   GtkWidget *child;
 371
 372   toggle_button = GTK_TOGGLE_BUTTON (widget);
 373   bin = GTK_BIN (widget);
 374
 375   if (gtk_toggle_button_get_mode (toggle_button))
 376     {
 377       gtk_check_button_paint (widget, cr);
 378
 379       child = gtk_bin_get_child (bin);
 380       if (child)
 381         gtk_container_propagate_draw (GTK_CONTAINER (widget),
 382                                       child,
 383                                       cr);
 384     }
 385   else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
 386     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);
 387
 388   return FALSE;
 389 }
 390
 391
 392 static void
 393 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 394                                  cairo_t        *cr)
 395 {
 396   GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 397
 398   if (class->draw_indicator)
 399     class->draw_indicator (check_button, cr);
 400 }
 401
 402 static void
 403 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 404                                       cairo_t        *cr)
 405 {
 406   GtkWidget *widget;
 407   GtkWidget *child;
 408   GtkButton *button;
 409   GtkToggleButton *toggle_button;
 410   GtkStateType state_type;
 411   GtkShadowType shadow_type;
 412   gint x, y;
 413   gint indicator_size;
 414   gint indicator_spacing;
 415   gint focus_width;
 416   gint focus_pad;
 417   guint border_width;
 418   gboolean interior_focus;
 419   GtkAllocation allocation;
 420   GtkStyle *style;
 421   GdkWindow *window;
 422
 423   widget = GTK_WIDGET (check_button);
 424   button = GTK_BUTTON (check_button);
 425   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 426
 427   gtk_widget_get_allocation (widget, &allocation);
 428   style = gtk_widget_get_style (widget);
 429   window = gtk_widget_get_window (widget);
 430
 431   gtk_widget_style_get (widget,
 432                         "interior-focus", &interior_focus,
 433                         "focus-line-width", &focus_width,
 434                         "focus-padding", &focus_pad,
 435                         NULL);
 436
 437   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 438
 439   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 440
 441   x = indicator_spacing + border_width;
 442   y = (allocation.height - indicator_size) / 2;
 443
 444   child = gtk_bin_get_child (GTK_BIN (check_button));
 445   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 446     x += focus_width + focus_pad;
 447
 448   if (gtk_toggle_button_get_inconsistent (toggle_button))
 449     shadow_type = GTK_SHADOW_ETCHED_IN;
 450   else if (gtk_toggle_button_get_active (toggle_button))
 451     shadow_type = GTK_SHADOW_IN;
 452   else
 453     shadow_type = GTK_SHADOW_OUT;
 454
 455   if (button->activate_timeout || (button->button_down && button->in_button))
 456     state_type = GTK_STATE_ACTIVE;
 457   else if (button->in_button)
 458     state_type = GTK_STATE_PRELIGHT;
 459   else if (!gtk_widget_is_sensitive (widget))
 460     state_type = GTK_STATE_INSENSITIVE;
 461   else
 462     state_type = GTK_STATE_NORMAL;
 463
 464   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 465     x = allocation.width - (indicator_size + x);
 466
 467   if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 468     {
 469
 470       gtk_paint_flat_box (style, cr, GTK_STATE_PRELIGHT,
 471                           GTK_SHADOW_ETCHED_OUT,
 472                           widget, "checkbutton",
 473                           border_width, border_width,
 474                           allocation.width - (2 * border_width),
 475                           allocation.height - (2 * border_width));
 476     }
 477
 478   gtk_paint_check (style, cr,
 479                    state_type, shadow_type,
 480                    widget, "checkbutton",
 481                    x, y, indicator_size, indicator_size);
 482 }