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