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       GtkStateType state = gtk_widget_get_state (widget);
 159       GtkStyle *style = gtk_widget_get_style (widget);
 160       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 161       GtkAllocation allocation;
 162
 163       gtk_widget_get_allocation (widget, &allocation);
 164
 165       if (interior_focus && child && gtk_widget_get_visible (child))
 166         {
 167           GtkAllocation child_allocation;
 168
 169           gtk_widget_get_allocation (child, &child_allocation);
 170           gtk_paint_focus (style, cr, state,
 171                            widget, "checkbutton",
 172                            child_allocation.x - allocation.x - focus_width - focus_pad,
 173                            child_allocation.y - allocation.y - focus_width - focus_pad,
 174                            child_allocation.width + 2 * (focus_width + focus_pad),
 175                            child_allocation.height + 2 * (focus_width + focus_pad));
 176         }
 177       else
 178         {
 179           gtk_paint_focus (style, cr, state,
 180                            widget, "checkbutton",
 181                            border_width,
 182                            border_width,
 183                            allocation.width - 2 * border_width,
 184                            allocation.height - 2 * border_width);
 185         }
 186     }
 187 }
 188
 189 void
 190 _gtk_check_button_get_props (GtkCheckButton *check_button,
 191                              gint           *indicator_size,
 192                              gint           *indicator_spacing)
 193 {
 194   GtkWidget *widget =  GTK_WIDGET (check_button);
 195
 196   if (indicator_size)
 197     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
 198
 199   if (indicator_spacing)
 200     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 201 }
 202
 203 static void
 204 gtk_check_button_get_preferred_width (GtkWidget *widget,
 205                                       gint      *minimum,
 206                                       gint      *natural)
 207 {
 208   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 209
 210   if (gtk_toggle_button_get_mode (toggle_button))
 211     {
 212       GtkWidget *child;
 213       gint indicator_size;
 214       gint indicator_spacing;
 215       gint focus_width;
 216       gint focus_pad;
 217       guint border_width;
 218
 219       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 220
 221       gtk_widget_style_get (GTK_WIDGET (widget),
 222                             "focus-line-width", &focus_width,
 223                             "focus-padding", &focus_pad,
 224                             NULL);
 225       *minimum = 2 * border_width;
 226       *natural = 2 * border_width;
 227
 228       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 229                                    &indicator_size, &indicator_spacing);
 230
 231       child = gtk_bin_get_child (GTK_BIN (widget));
 232       if (child && gtk_widget_get_visible (child))
 233         {
 234           gint child_min, child_nat;
 235
 236           gtk_widget_get_preferred_width (child, &child_min, &child_nat);
 237
 238           *minimum += child_min + indicator_spacing;
 239           *natural += child_nat + indicator_spacing;
 240         }
 241
 242       *minimum += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 243       *natural += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 244     }
 245   else
 246     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_width (widget, minimum, natural);
 247 }
 248
 249 static void
 250 gtk_check_button_get_preferred_height (GtkWidget *widget,
 251                                        gint      *minimum,
 252                                        gint      *natural)
 253 {
 254   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 255
 256   if (gtk_toggle_button_get_mode (toggle_button))
 257     {
 258       GtkWidget *child;
 259       gint temp;
 260       gint indicator_size;
 261       gint indicator_spacing;
 262       gint focus_width;
 263       gint focus_pad;
 264       guint border_width;
 265
 266       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 267
 268       gtk_widget_style_get (GTK_WIDGET (widget),
 269                             "focus-line-width", &focus_width,
 270                             "focus-padding", &focus_pad,
 271                             NULL);
 272
 273       *minimum = border_width * 2;
 274       *natural = border_width * 2;
 275
 276       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 277                                    &indicator_size, &indicator_spacing);
 278
 279       child = gtk_bin_get_child (GTK_BIN (widget));
 280       if (child && gtk_widget_get_visible (child))
 281         {
 282           gint child_min, child_nat;
 283
 284           gtk_widget_get_preferred_height (child, &child_min, &child_nat);
 285
 286           *minimum += child_min;
 287           *natural += child_nat;
 288         }
 289
 290       temp = indicator_size + indicator_spacing * 2;
 291       *minimum = MAX (*minimum, temp) + 2 * (focus_width + focus_pad);
 292       *natural = MAX (*natural, temp) + 2 * (focus_width + focus_pad);
 293     }
 294   else
 295     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->get_preferred_height (widget, minimum, natural);
 296 }
 297
 298 static void
 299 gtk_check_button_size_allocate (GtkWidget     *widget,
 300                                 GtkAllocation *allocation)
 301 {
 302   GtkCheckButton *check_button;
 303   GtkToggleButton *toggle_button;
 304   GtkButton *button;
 305   GtkAllocation child_allocation;
 306
 307   button = GTK_BUTTON (widget);
 308   check_button = GTK_CHECK_BUTTON (widget);
 309   toggle_button = GTK_TOGGLE_BUTTON (widget);
 310
 311   if (gtk_toggle_button_get_mode (toggle_button))
 312     {
 313       GtkWidget *child;
 314       gint indicator_size;
 315       gint indicator_spacing;
 316       gint focus_width;
 317       gint focus_pad;
 318
 319       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 320       gtk_widget_style_get (widget,
 321                             "focus-line-width", &focus_width,
 322                             "focus-padding", &focus_pad,
 323                             NULL);
 324
 325       gtk_widget_set_allocation (widget, allocation);
 326
 327       if (gtk_widget_get_realized (widget))
 328         gdk_window_move_resize (gtk_button_get_event_window (button),
 329                                 allocation->x, allocation->y,
 330                                 allocation->width, allocation->height);
 331
 332       child = gtk_bin_get_child (GTK_BIN (button));
 333       if (child && gtk_widget_get_visible (child))
 334         {
 335           GtkRequisition child_requisition;
 336           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 337
 338           gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 339
 340           child_allocation.width = MIN (child_requisition.width,
 341                                         allocation->width -
 342                                         ((border_width + focus_width + focus_pad) * 2
 343                                          + indicator_size + indicator_spacing * 3));
 344           child_allocation.width = MAX (child_allocation.width, 1);
 345
 346           child_allocation.height = MIN (child_requisition.height,
 347                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 348           child_allocation.height = MAX (child_allocation.height, 1);
 349
 350           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 351                                 allocation->x + focus_width + focus_pad);
 352           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
 353
 354           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 355             child_allocation.x = allocation->x + allocation->width
 356               - (child_allocation.x - allocation->x + child_allocation.width);
 357
 358           gtk_widget_size_allocate (child, &child_allocation);
 359         }
 360     }
 361   else
 362     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 363 }
 364
 365 static gint
 366 gtk_check_button_draw (GtkWidget *widget,
 367                        cairo_t   *cr)
 368 {
 369   GtkToggleButton *toggle_button;
 370   GtkBin *bin;
 371   GtkWidget *child;
 372
 373   toggle_button = GTK_TOGGLE_BUTTON (widget);
 374   bin = GTK_BIN (widget);
 375
 376   if (gtk_toggle_button_get_mode (toggle_button))
 377     {
 378       gtk_check_button_paint (widget, cr);
 379
 380       child = gtk_bin_get_child (bin);
 381       if (child)
 382         gtk_container_propagate_draw (GTK_CONTAINER (widget),
 383                                       child,
 384                                       cr);
 385     }
 386   else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
 387     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);
 388
 389   return FALSE;
 390 }
 391
 392
 393 static void
 394 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 395                                  cairo_t        *cr)
 396 {
 397   GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 398
 399   if (class->draw_indicator)
 400     class->draw_indicator (check_button, cr);
 401 }
 402
 403 static void
 404 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 405                                       cairo_t        *cr)
 406 {
 407   GtkWidget *widget;
 408   GtkWidget *child;
 409   GtkButton *button;
 410   GtkToggleButton *toggle_button;
 411   GtkStateType state_type;
 412   GtkShadowType shadow_type;
 413   gint x, y;
 414   gint indicator_size;
 415   gint indicator_spacing;
 416   gint focus_width;
 417   gint focus_pad;
 418   guint border_width;
 419   gboolean interior_focus;
 420   GtkAllocation allocation;
 421   GtkStyle *style;
 422   GdkWindow *window;
 423
 424   widget = GTK_WIDGET (check_button);
 425   button = GTK_BUTTON (check_button);
 426   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 427
 428   gtk_widget_get_allocation (widget, &allocation);
 429   style = gtk_widget_get_style (widget);
 430   window = gtk_widget_get_window (widget);
 431
 432   gtk_widget_style_get (widget,
 433                         "interior-focus", &interior_focus,
 434                         "focus-line-width", &focus_width,
 435                         "focus-padding", &focus_pad,
 436                         NULL);
 437
 438   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 439
 440   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 441
 442   x = indicator_spacing + border_width;
 443   y = (allocation.height - indicator_size) / 2;
 444
 445   child = gtk_bin_get_child (GTK_BIN (check_button));
 446   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 447     x += focus_width + focus_pad;
 448
 449   if (gtk_toggle_button_get_inconsistent (toggle_button))
 450     shadow_type = GTK_SHADOW_ETCHED_IN;
 451   else if (gtk_toggle_button_get_active (toggle_button))
 452     shadow_type = GTK_SHADOW_IN;
 453   else
 454     shadow_type = GTK_SHADOW_OUT;
 455
 456   if (button->priv->activate_timeout || (button->priv->button_down && button->priv->in_button))
 457     state_type = GTK_STATE_ACTIVE;
 458   else if (button->priv->in_button)
 459     state_type = GTK_STATE_PRELIGHT;
 460   else if (!gtk_widget_is_sensitive (widget))
 461     state_type = GTK_STATE_INSENSITIVE;
 462   else
 463     state_type = GTK_STATE_NORMAL;
 464
 465   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 466     x = allocation.width - (indicator_size + x);
 467
 468   if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 469     {
 470
 471       gtk_paint_flat_box (style, cr, GTK_STATE_PRELIGHT,
 472                           GTK_SHADOW_ETCHED_OUT,
 473                           widget, "checkbutton",
 474                           border_width, border_width,
 475                           allocation.width - (2 * border_width),
 476                           allocation.height - (2 * border_width));
 477     }
 478
 479   gtk_paint_check (style, cr,
 480                    state_type, shadow_type,
 481                    widget, "checkbutton",
 482                    x, y, indicator_size, indicator_size);
 483 }