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 "gtklabel.h"
  30 #include "gtkprivate.h"
  31 #include "gtkintl.h"
  32
  33
  34 #define INDICATOR_SIZE     13
  35 #define INDICATOR_SPACING  2
  36
  37
  38 static void gtk_check_button_size_request        (GtkWidget           *widget,
  39                                                   GtkRequisition      *requisition);
  40 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  41                                                   GtkAllocation       *allocation);
  42 static gint gtk_check_button_expose              (GtkWidget           *widget,
  43                                                   GdkEventExpose      *event);
  44 static void gtk_check_button_paint               (GtkWidget           *widget,
  45                                                   GdkRectangle        *area);
  46 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  47                                                   GdkRectangle        *area);
  48 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  49                                                   GdkRectangle        *area);
  50
  51 G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
  52
  53 static void
  54 gtk_check_button_class_init (GtkCheckButtonClass *class)
  55 {
  56   GtkWidgetClass *widget_class;
  57
  58   widget_class = (GtkWidgetClass*) class;
  59
  60   widget_class->size_request = gtk_check_button_size_request;
  61   widget_class->size_allocate = gtk_check_button_size_allocate;
  62   widget_class->expose_event = gtk_check_button_expose;
  63
  64   class->draw_indicator = gtk_real_check_button_draw_indicator;
  65
  66   gtk_widget_class_install_style_property (widget_class,
  67                                            g_param_spec_int ("indicator-size",
  68                                                              P_("Indicator Size"),
  69                                                              P_("Size of check or radio indicator"),
  70                                                              0,
  71                                                              G_MAXINT,
  72                                                              INDICATOR_SIZE,
  73                                                              GTK_PARAM_READABLE));
  74   gtk_widget_class_install_style_property (widget_class,
  75                                            g_param_spec_int ("indicator-spacing",
  76                                                              P_("Indicator Spacing"),
  77                                                              P_("Spacing around check or radio indicator"),
  78                                                              0,
  79                                                              G_MAXINT,
  80                                                              INDICATOR_SPACING,
  81                                                              GTK_PARAM_READABLE));
  82 }
  83
  84 static void
  85 gtk_check_button_init (GtkCheckButton *check_button)
  86 {
  87   gtk_widget_set_has_window (GTK_WIDGET (check_button), FALSE);
  88   gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
  89   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
  90   GTK_BUTTON (check_button)->depress_on_activate = FALSE;
  91 }
  92
  93 GtkWidget*
  94 gtk_check_button_new (void)
  95 {
  96   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
  97 }
  98
  99
 100 GtkWidget*
 101 gtk_check_button_new_with_label (const gchar *label)
 102 {
 103   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 104 }
 105
 106 /**
 107  * gtk_check_button_new_with_mnemonic:
 108  * @label: The text of the button, with an underscore in front of the
 109  *         mnemonic character
 110  * @returns: a new #GtkCheckButton
 111  *
 112  * Creates a new #GtkCheckButton containing a label. The label
 113  * will be created using gtk_label_new_with_mnemonic(), so underscores
 114  * in @label indicate the mnemonic for the check button.
 115  **/
 116 GtkWidget*
 117 gtk_check_button_new_with_mnemonic (const gchar *label)
 118 {
 119   return g_object_new (GTK_TYPE_CHECK_BUTTON,
 120                        "label", label,
 121                        "use-underline", TRUE,
 122                        NULL);
 123 }
 124
 125
 126 /* This should only be called when toggle_button->draw_indicator
 127  * is true.
 128  */
 129 static void
 130 gtk_check_button_paint (GtkWidget    *widget,
 131                         GdkRectangle *area)
 132 {
 133   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 134
 135   if (gtk_widget_is_drawable (widget))
 136     {
 137       gint border_width;
 138       gint interior_focus;
 139       gint focus_width;
 140       gint focus_pad;
 141
 142       gtk_widget_style_get (widget,
 143                             "interior-focus", &interior_focus,
 144                             "focus-line-width", &focus_width,
 145                             "focus-padding", &focus_pad,
 146                             NULL);
 147
 148       gtk_check_button_draw_indicator (check_button, area);
 149
 150       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 151       if (gtk_widget_has_focus (widget))
 152         {
 153           GtkStateType state;
 154           GtkStyle *style;
 155           GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 156           GdkWindow *window;
 157
 158           style = gtk_widget_get_style (widget);
 159           window = gtk_widget_get_window (widget);
 160           state = gtk_widget_get_state (widget);
 161
 162           if (interior_focus && child && gtk_widget_get_visible (child))
 163             {
 164               GtkAllocation child_allocation;
 165
 166               gtk_widget_get_allocation (child, &child_allocation);
 167               gtk_paint_focus (style, window, state,
 168                                area, widget, "checkbutton",
 169                                child_allocation.x - focus_width - focus_pad,
 170                                child_allocation.y - focus_width - focus_pad,
 171                                child_allocation.width + 2 * (focus_width + focus_pad),
 172                                child_allocation.height + 2 * (focus_width + focus_pad));
 173             }
 174           else
 175             {
 176               GtkAllocation allocation;
 177
 178               gtk_widget_get_allocation (widget, &allocation);
 179               gtk_paint_focus (style, window, state,
 180                                area, widget, "checkbutton",
 181                                allocation.x + border_width,
 182                                allocation.y + border_width,
 183                                allocation.width - 2 * border_width,
 184                                allocation.height - 2 * border_width);
 185             }
 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_widget_size_request (child, &child_requisition);
 239
 240           requisition->width += child_requisition.width + indicator_spacing;
 241           requisition->height += child_requisition.height;
 242         }
 243
 244       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 245
 246       temp = indicator_size + indicator_spacing * 2;
 247       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 248     }
 249   else
 250     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_request (widget, requisition);
 251 }
 252
 253 static void
 254 gtk_check_button_size_allocate (GtkWidget     *widget,
 255                                 GtkAllocation *allocation)
 256 {
 257   GtkCheckButton *check_button;
 258   GtkToggleButton *toggle_button;
 259   GtkButton *button;
 260   GtkAllocation child_allocation;
 261
 262   button = GTK_BUTTON (widget);
 263   check_button = GTK_CHECK_BUTTON (widget);
 264   toggle_button = GTK_TOGGLE_BUTTON (widget);
 265
 266   if (toggle_button->draw_indicator)
 267     {
 268       GtkWidget *child;
 269       gint indicator_size;
 270       gint indicator_spacing;
 271       gint focus_width;
 272       gint focus_pad;
 273
 274       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 275       gtk_widget_style_get (widget,
 276                             "focus-line-width", &focus_width,
 277                             "focus-padding", &focus_pad,
 278                             NULL);
 279
 280       gtk_widget_set_allocation (widget, allocation);
 281
 282       if (gtk_widget_get_realized (widget))
 283         gdk_window_move_resize (button->event_window,
 284                                 allocation->x, allocation->y,
 285                                 allocation->width, allocation->height);
 286
 287       child = gtk_bin_get_child (GTK_BIN (button));
 288       if (child && gtk_widget_get_visible (child))
 289         {
 290           GtkRequisition child_requisition;
 291           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 292
 293           gtk_widget_get_child_requisition (child, &child_requisition);
 294
 295           child_allocation.width = MIN (child_requisition.width,
 296                                         allocation->width -
 297                                         ((border_width + focus_width + focus_pad) * 2
 298                                          + indicator_size + indicator_spacing * 3));
 299           child_allocation.width = MAX (child_allocation.width, 1);
 300
 301           child_allocation.height = MIN (child_requisition.height,
 302                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 303           child_allocation.height = MAX (child_allocation.height, 1);
 304
 305           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 306                                 allocation->x + focus_width + focus_pad);
 307           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
 308
 309           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 310             child_allocation.x = allocation->x + allocation->width
 311               - (child_allocation.x - allocation->x + child_allocation.width);
 312
 313           gtk_widget_size_allocate (child, &child_allocation);
 314         }
 315     }
 316   else
 317     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 318 }
 319
 320 static gint
 321 gtk_check_button_expose (GtkWidget      *widget,
 322                          GdkEventExpose *event)
 323 {
 324   GtkToggleButton *toggle_button;
 325   GtkBin *bin;
 326   GtkWidget *child;
 327
 328   toggle_button = GTK_TOGGLE_BUTTON (widget);
 329   bin = GTK_BIN (widget);
 330
 331   if (gtk_widget_is_drawable (widget))
 332     {
 333       if (toggle_button->draw_indicator)
 334         {
 335           gtk_check_button_paint (widget, &event->area);
 336
 337           child = gtk_bin_get_child (bin);
 338           if (child)
 339             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 340                                             child,
 341                                             event);
 342         }
 343       else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event)
 344         GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event (widget, event);
 345     }
 346
 347   return FALSE;
 348 }
 349
 350
 351 static void
 352 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 353                                  GdkRectangle   *area)
 354 {
 355   GtkCheckButtonClass *class;
 356
 357   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 358
 359   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 360
 361   if (class->draw_indicator)
 362     class->draw_indicator (check_button, area);
 363 }
 364
 365 static void
 366 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 367                                       GdkRectangle   *area)
 368 {
 369   GtkWidget *widget;
 370   GtkWidget *child;
 371   GtkButton *button;
 372   GtkToggleButton *toggle_button;
 373   GtkStateType state_type;
 374   GtkShadowType shadow_type;
 375   gint x, y;
 376   gint indicator_size;
 377   gint indicator_spacing;
 378   gint focus_width;
 379   gint focus_pad;
 380   guint border_width;
 381   gboolean interior_focus;
 382
 383   widget = GTK_WIDGET (check_button);
 384
 385   if (gtk_widget_is_drawable (widget))
 386     {
 387       GtkAllocation allocation;
 388       GtkStyle *style;
 389       GdkWindow *window;
 390
 391       button = GTK_BUTTON (check_button);
 392       toggle_button = GTK_TOGGLE_BUTTON (check_button);
 393
 394       gtk_widget_get_allocation (widget, &allocation);
 395       style = gtk_widget_get_style (widget);
 396       window = gtk_widget_get_window (widget);
 397
 398       gtk_widget_style_get (widget,
 399                             "interior-focus", &interior_focus,
 400                             "focus-line-width", &focus_width,
 401                             "focus-padding", &focus_pad,
 402                             NULL);
 403
 404       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 405
 406       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 407
 408       x = allocation.x + indicator_spacing + border_width;
 409       y = allocation.y + (allocation.height - indicator_size) / 2;
 410
 411       child = gtk_bin_get_child (GTK_BIN (check_button));
 412       if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 413         x += focus_width + focus_pad;
 414
 415       if (toggle_button->inconsistent)
 416         shadow_type = GTK_SHADOW_ETCHED_IN;
 417       else if (toggle_button->active)
 418         shadow_type = GTK_SHADOW_IN;
 419       else
 420         shadow_type = GTK_SHADOW_OUT;
 421
 422       if (button->activate_timeout || (button->button_down && button->in_button))
 423         state_type = GTK_STATE_ACTIVE;
 424       else if (button->in_button)
 425         state_type = GTK_STATE_PRELIGHT;
 426       else if (!gtk_widget_is_sensitive (widget))
 427         state_type = GTK_STATE_INSENSITIVE;
 428       else
 429         state_type = GTK_STATE_NORMAL;
 430
 431       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 432         x = allocation.x + allocation.width - (indicator_size + x - allocation.x);
 433
 434       if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 435         {
 436           GdkRectangle restrict_area;
 437           GdkRectangle new_area;
 438
 439           restrict_area.x = allocation.x + border_width;
 440           restrict_area.y = allocation.y + border_width;
 441           restrict_area.width = allocation.width - (2 * border_width);
 442           restrict_area.height = allocation.height - (2 * border_width);
 443
 444           if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 445             {
 446               gtk_paint_flat_box (style, window, GTK_STATE_PRELIGHT,
 447                                   GTK_SHADOW_ETCHED_OUT,
 448                                   area, widget, "checkbutton",
 449                                   new_area.x, new_area.y,
 450                                   new_area.width, new_area.height);
 451             }
 452         }
 453
 454       gtk_paint_check (style, window,
 455                        state_type, shadow_type,
 456                        area, widget, "checkbutton",
 457                        x, y, indicator_size, indicator_size);
 458     }
 459 }