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 gboolean gtk_check_button_draw            (GtkWidget           *widget,
  47                                                   cairo_t             *cr);
  48 static void gtk_check_button_paint               (GtkWidget           *widget,
  49                                                   cairo_t             *cr);
  50 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  51                                                   cairo_t             *cr);
  52 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  53                                                   cairo_t             *cr);
  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->draw = gtk_check_button_draw;
  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                         cairo_t      *cr)
 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, cr);
 150
 151   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 152   if (gtk_widget_has_focus (widget))
 153     {
 154       GtkStateType state = gtk_widget_get_state (widget);
 155       GtkStyle *style = gtk_widget_get_style (widget);
 156       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 157       GtkAllocation allocation;
 158
 159       gtk_widget_get_allocation (widget, &allocation);
 160
 161       if (interior_focus && child && gtk_widget_get_visible (child))
 162         {
 163           GtkAllocation child_allocation;
 164
 165           gtk_widget_get_allocation (child, &child_allocation);
 166           gtk_paint_focus (style, cr, state,
 167                            widget, "checkbutton",
 168                            child_allocation.x - allocation.x - focus_width - focus_pad,
 169                            child_allocation.y - allocation.y - focus_width - focus_pad,
 170                            child_allocation.width + 2 * (focus_width + focus_pad),
 171                            child_allocation.height + 2 * (focus_width + focus_pad));
 172         }
 173       else
 174         {
 175           gtk_paint_focus (style, cr, state,
 176                            widget, "checkbutton",
 177                            border_width,
 178                            border_width,
 179                            allocation.width - 2 * border_width,
 180                            allocation.height - 2 * border_width);
 181         }
 182     }
 183 }
 184
 185 void
 186 _gtk_check_button_get_props (GtkCheckButton *check_button,
 187                              gint           *indicator_size,
 188                              gint           *indicator_spacing)
 189 {
 190   GtkWidget *widget =  GTK_WIDGET (check_button);
 191
 192   if (indicator_size)
 193     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
 194
 195   if (indicator_spacing)
 196     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 197 }
 198
 199 static void
 200 gtk_check_button_size_request (GtkWidget      *widget,
 201                                GtkRequisition *requisition)
 202 {
 203   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 204
 205   if (toggle_button->draw_indicator)
 206     {
 207       GtkWidget *child;
 208       gint temp;
 209       gint indicator_size;
 210       gint indicator_spacing;
 211       gint focus_width;
 212       gint focus_pad;
 213       guint border_width;
 214
 215       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 216
 217       gtk_widget_style_get (GTK_WIDGET (widget),
 218                             "focus-line-width", &focus_width,
 219                             "focus-padding", &focus_pad,
 220                             NULL);
 221
 222       requisition->width = border_width * 2;
 223       requisition->height = border_width * 2;
 224
 225       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 226                                    &indicator_size, &indicator_spacing);
 227
 228       child = gtk_bin_get_child (GTK_BIN (widget));
 229       if (child && gtk_widget_get_visible (child))
 230         {
 231           GtkRequisition child_requisition;
 232
 233           gtk_size_request_get_size (GTK_SIZE_REQUEST (child),
 234                                      &child_requisition, NULL);
 235
 236           requisition->width += child_requisition.width + indicator_spacing;
 237           requisition->height += child_requisition.height;
 238         }
 239
 240       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 241
 242       temp = indicator_size + indicator_spacing * 2;
 243       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 244     }
 245   else
 246     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_request (widget, requisition);
 247 }
 248
 249 static void
 250 gtk_check_button_size_allocate (GtkWidget     *widget,
 251                                 GtkAllocation *allocation)
 252 {
 253   GtkCheckButton *check_button;
 254   GtkToggleButton *toggle_button;
 255   GtkButton *button;
 256   GtkAllocation child_allocation;
 257
 258   button = GTK_BUTTON (widget);
 259   check_button = GTK_CHECK_BUTTON (widget);
 260   toggle_button = GTK_TOGGLE_BUTTON (widget);
 261
 262   if (toggle_button->draw_indicator)
 263     {
 264       GtkWidget *child;
 265       gint indicator_size;
 266       gint indicator_spacing;
 267       gint focus_width;
 268       gint focus_pad;
 269
 270       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 271       gtk_widget_style_get (widget,
 272                             "focus-line-width", &focus_width,
 273                             "focus-padding", &focus_pad,
 274                             NULL);
 275
 276       gtk_widget_set_allocation (widget, allocation);
 277
 278       if (gtk_widget_get_realized (widget))
 279         gdk_window_move_resize (button->event_window,
 280                                 allocation->x, allocation->y,
 281                                 allocation->width, allocation->height);
 282
 283       child = gtk_bin_get_child (GTK_BIN (button));
 284       if (child && gtk_widget_get_visible (child))
 285         {
 286           GtkRequisition child_requisition;
 287           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 288
 289           gtk_size_request_get_size (GTK_SIZE_REQUEST (child),
 290                                      &child_requisition, NULL);
 291
 292           child_allocation.width = MIN (child_requisition.width,
 293                                         allocation->width -
 294                                         ((border_width + focus_width + focus_pad) * 2
 295                                          + indicator_size + indicator_spacing * 3));
 296           child_allocation.width = MAX (child_allocation.width, 1);
 297
 298           child_allocation.height = MIN (child_requisition.height,
 299                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 300           child_allocation.height = MAX (child_allocation.height, 1);
 301
 302           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 303                                 allocation->x + focus_width + focus_pad);
 304           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
 305
 306           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 307             child_allocation.x = allocation->x + allocation->width
 308               - (child_allocation.x - allocation->x + child_allocation.width);
 309
 310           gtk_widget_size_allocate (child, &child_allocation);
 311         }
 312     }
 313   else
 314     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 315 }
 316
 317 static gint
 318 gtk_check_button_draw (GtkWidget *widget,
 319                        cairo_t   *cr)
 320 {
 321   GtkToggleButton *toggle_button;
 322   GtkBin *bin;
 323   GtkWidget *child;
 324
 325   toggle_button = GTK_TOGGLE_BUTTON (widget);
 326   bin = GTK_BIN (widget);
 327
 328   if (toggle_button->draw_indicator)
 329     {
 330       gtk_check_button_paint (widget, cr);
 331
 332       child = gtk_bin_get_child (bin);
 333       if (child)
 334         gtk_container_propagate_draw (GTK_CONTAINER (widget),
 335                                       child,
 336                                       cr);
 337     }
 338   else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
 339     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);
 340
 341   return FALSE;
 342 }
 343
 344
 345 static void
 346 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 347                                  cairo_t        *cr)
 348 {
 349   GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 350
 351   if (class->draw_indicator)
 352     class->draw_indicator (check_button, cr);
 353 }
 354
 355 static void
 356 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 357                                       cairo_t        *cr)
 358 {
 359   GtkWidget *widget;
 360   GtkWidget *child;
 361   GtkButton *button;
 362   GtkToggleButton *toggle_button;
 363   GtkStateType state_type;
 364   GtkShadowType shadow_type;
 365   gint x, y;
 366   gint indicator_size;
 367   gint indicator_spacing;
 368   gint focus_width;
 369   gint focus_pad;
 370   guint border_width;
 371   gboolean interior_focus;
 372   GtkAllocation allocation;
 373   GtkStyle *style;
 374   GdkWindow *window;
 375
 376   widget = GTK_WIDGET (check_button);
 377   button = GTK_BUTTON (check_button);
 378   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 379
 380   gtk_widget_get_allocation (widget, &allocation);
 381   style = gtk_widget_get_style (widget);
 382   window = gtk_widget_get_window (widget);
 383
 384   gtk_widget_style_get (widget,
 385                         "interior-focus", &interior_focus,
 386                         "focus-line-width", &focus_width,
 387                         "focus-padding", &focus_pad,
 388                         NULL);
 389
 390   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 391
 392   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 393
 394   x = indicator_spacing + border_width;
 395   y = (allocation.height - indicator_size) / 2;
 396
 397   child = gtk_bin_get_child (GTK_BIN (check_button));
 398   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 399     x += focus_width + focus_pad;
 400
 401   if (toggle_button->inconsistent)
 402     shadow_type = GTK_SHADOW_ETCHED_IN;
 403   else if (toggle_button->active)
 404     shadow_type = GTK_SHADOW_IN;
 405   else
 406     shadow_type = GTK_SHADOW_OUT;
 407
 408   if (button->activate_timeout || (button->button_down && button->in_button))
 409     state_type = GTK_STATE_ACTIVE;
 410   else if (button->in_button)
 411     state_type = GTK_STATE_PRELIGHT;
 412   else if (!gtk_widget_is_sensitive (widget))
 413     state_type = GTK_STATE_INSENSITIVE;
 414   else
 415     state_type = GTK_STATE_NORMAL;
 416
 417   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 418     x = allocation.width - (indicator_size + x);
 419
 420   if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 421     {
 422
 423       gtk_paint_flat_box (style, cr, GTK_STATE_PRELIGHT,
 424                           GTK_SHADOW_ETCHED_OUT,
 425                           widget, "checkbutton",
 426                           border_width, border_width,
 427                           allocation.width - (2 * border_width),
 428                           allocation.height - (2 * border_width));
 429     }
 430
 431   gtk_paint_check (style, cr,
 432                    state_type, shadow_type,
 433                    widget, "checkbutton",
 434                    x, y, indicator_size, indicator_size);
 435 }