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 "gtkbuttonprivate.h"
  32 #include "gtklabel.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_get_preferred_width  (GtkWidget          *widget,
  43                                                    gint               *minimum,
  44                                                    gint               *natural);
  45 static void gtk_check_button_get_preferred_height (GtkWidget          *widget,
  46                                                    gint               *minimum,
  47                                                    gint               *natural);
  48 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  49                                                   GtkAllocation       *allocation);
  50 static gboolean gtk_check_button_draw            (GtkWidget           *widget,
  51                                                   cairo_t             *cr);
  52 static void gtk_check_button_paint               (GtkWidget           *widget,
  53                                                   cairo_t             *cr);
  54 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  55                                                   cairo_t             *cr);
  56 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  57                                                   cairo_t             *cr);
  58
  59 G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
  60
  61 static void
  62 gtk_check_button_class_init (GtkCheckButtonClass *class)
  63 {
  64   GtkWidgetClass *widget_class;
  65
  66   widget_class = (GtkWidgetClass*) class;
  67
  68   widget_class->get_preferred_width = gtk_check_button_get_preferred_width;
  69   widget_class->get_preferred_height = gtk_check_button_get_preferred_height;
  70   widget_class->size_allocate = gtk_check_button_size_allocate;
  71   widget_class->draw = gtk_check_button_draw;
  72
  73   class->draw_indicator = gtk_real_check_button_draw_indicator;
  74
  75   gtk_widget_class_install_style_property (widget_class,
  76                                            g_param_spec_int ("indicator-size",
  77                                                              P_("Indicator Size"),
  78                                                              P_("Size of check or radio indicator"),
  79                                                              0,
  80                                                              G_MAXINT,
  81                                                              INDICATOR_SIZE,
  82                                                              GTK_PARAM_READABLE));
  83   gtk_widget_class_install_style_property (widget_class,
  84                                            g_param_spec_int ("indicator-spacing",
  85                                                              P_("Indicator Spacing"),
  86                                                              P_("Spacing around check or radio indicator"),
  87                                                              0,
  88                                                              G_MAXINT,
  89                                                              INDICATOR_SPACING,
  90                                                              GTK_PARAM_READABLE));
  91 }
  92
  93 static void
  94 gtk_check_button_init (GtkCheckButton *check_button)
  95 {
  96   gtk_widget_set_has_window (GTK_WIDGET (check_button), FALSE);
  97   gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
  98   gtk_toggle_button_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
  99 }
 100
 101 GtkWidget*
 102 gtk_check_button_new (void)
 103 {
 104   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
 105 }
 106
 107
 108 GtkWidget*
 109 gtk_check_button_new_with_label (const gchar *label)
 110 {
 111   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 112 }
 113
 114 /**
 115  * gtk_check_button_new_with_mnemonic:
 116  * @label: The text of the button, with an underscore in front of the
 117  *         mnemonic character
 118  * @returns: a new #GtkCheckButton
 119  *
 120  * Creates a new #GtkCheckButton containing a label. The label
 121  * will be created using gtk_label_new_with_mnemonic(), so underscores
 122  * in @label indicate the mnemonic for the check button.
 123  **/
 124 GtkWidget*
 125 gtk_check_button_new_with_mnemonic (const gchar *label)
 126 {
 127   return g_object_new (GTK_TYPE_CHECK_BUTTON,
 128                        "label", label,
 129                        "use-underline", TRUE,
 130                        NULL);
 131 }
 132
 133
 134 /* This should only be called when toggle_button->draw_indicator
 135  * is true.
 136  */
 137 static void
 138 gtk_check_button_paint (GtkWidget    *widget,
 139                         cairo_t      *cr)
 140 {
 141   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 142   gint border_width;
 143   gint interior_focus;
 144   gint focus_width;
 145   gint focus_pad;
 146
 147   gtk_widget_style_get (widget,
 148                         "interior-focus", &interior_focus,
 149                         "focus-line-width", &focus_width,
 150                         "focus-padding", &focus_pad,
 151                         NULL);
 152
 153   gtk_check_button_draw_indicator (check_button, cr);
 154
 155   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 156   if (gtk_widget_has_focus (widget))
 157     {
 158       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 159       GtkStyleContext *context;
 160       GtkStateFlags state;
 161       GtkAllocation allocation;
 162
 163       gtk_widget_get_allocation (widget, &allocation);
 164       context = gtk_widget_get_style_context (widget);
 165       state = gtk_widget_get_state_flags (widget);
 166
 167       gtk_style_context_set_state (context, state);
 168
 169       if (interior_focus && child && gtk_widget_get_visible (child))
 170         {
 171           GtkAllocation child_allocation;
 172
 173           gtk_widget_get_allocation (child, &child_allocation);
 174           gtk_render_focus (context, cr,
 175                             child_allocation.x - allocation.x - focus_width - focus_pad,
 176                             child_allocation.y - allocation.y - focus_width - focus_pad,
 177                             child_allocation.width + 2 * (focus_width + focus_pad),
 178                             child_allocation.height + 2 * (focus_width + focus_pad));
 179         }
 180       else
 181         gtk_render_focus (context, cr,
 182                           border_width, border_width,
 183                           allocation.width - 2 * border_width,
 184                           allocation.height - 2 * border_width);
 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   GtkStateFlags state = 0;
 411   gint x, y;
 412   gint indicator_size;
 413   gint indicator_spacing;
 414   gint focus_width;
 415   gint focus_pad;
 416   guint border_width;
 417   gboolean interior_focus;
 418   GtkAllocation allocation;
 419   GtkStyleContext *context;
 420
 421   widget = GTK_WIDGET (check_button);
 422   button = GTK_BUTTON (check_button);
 423   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 424
 425   gtk_widget_get_allocation (widget, &allocation);
 426   context = gtk_widget_get_style_context (widget);
 427
 428   gtk_widget_style_get (widget,
 429                         "interior-focus", &interior_focus,
 430                         "focus-line-width", &focus_width,
 431                         "focus-padding", &focus_pad,
 432                         NULL);
 433
 434   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 435
 436   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 437
 438   x = indicator_spacing + border_width;
 439   y = (allocation.height - indicator_size) / 2;
 440
 441   child = gtk_bin_get_child (GTK_BIN (check_button));
 442   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 443     x += focus_width + focus_pad;
 444
 445   if (gtk_toggle_button_get_inconsistent (toggle_button))
 446     state |= GTK_STATE_FLAG_INCONSISTENT;
 447   else if (gtk_toggle_button_get_active (toggle_button) ||
 448            (button->priv->button_down && button->priv->in_button))
 449     state |= GTK_STATE_FLAG_ACTIVE;
 450
 451   if (button->priv->activate_timeout || (button->priv->button_down && button->priv->in_button))
 452     state |= GTK_STATE_FLAG_SELECTED;
 453
 454   if (button->priv->in_button)
 455     state |= GTK_STATE_FLAG_PRELIGHT;
 456   else if (!gtk_widget_is_sensitive (widget))
 457     state |= GTK_STATE_FLAG_INSENSITIVE;
 458
 459   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 460     x = allocation.width - (indicator_size + x);
 461
 462   gtk_style_context_set_state (context, state);
 463
 464   if (state & GTK_STATE_FLAG_PRELIGHT)
 465     gtk_render_background (context, cr,
 466                            border_width, border_width,
 467                            allocation.width - (2 * border_width),
 468                            allocation.height - (2 * border_width));
 469
 470   gtk_style_context_save (context);
 471   gtk_style_context_add_class (context, GTK_STYLE_CLASS_CHECK);
 472
 473   gtk_render_check (context, cr,
 474                     x, y, indicator_size, indicator_size);
 475
 476   gtk_style_context_restore (context);
 477 }