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_set_mode (GTK_TOGGLE_BUTTON (check_button), TRUE);
  93 }
  94
  95 GtkWidget*
  96 gtk_check_button_new (void)
  97 {
  98   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
  99 }
 100
 101
 102 GtkWidget*
 103 gtk_check_button_new_with_label (const gchar *label)
 104 {
 105   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 106 }
 107
 108 /**
 109  * gtk_check_button_new_with_mnemonic:
 110  * @label: The text of the button, with an underscore in front of the
 111  *         mnemonic character
 112  * @returns: a new #GtkCheckButton
 113  *
 114  * Creates a new #GtkCheckButton containing a label. The label
 115  * will be created using gtk_label_new_with_mnemonic(), so underscores
 116  * in @label indicate the mnemonic for the check button.
 117  **/
 118 GtkWidget*
 119 gtk_check_button_new_with_mnemonic (const gchar *label)
 120 {
 121   return g_object_new (GTK_TYPE_CHECK_BUTTON,
 122                        "label", label,
 123                        "use-underline", TRUE,
 124                        NULL);
 125 }
 126
 127
 128 /* This should only be called when toggle_button->draw_indicator
 129  * is true.
 130  */
 131 static void
 132 gtk_check_button_paint (GtkWidget    *widget,
 133                         cairo_t      *cr)
 134 {
 135   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 136   gint border_width;
 137   gint interior_focus;
 138   gint focus_width;
 139   gint focus_pad;
 140
 141   gtk_widget_style_get (widget,
 142                         "interior-focus", &interior_focus,
 143                         "focus-line-width", &focus_width,
 144                         "focus-padding", &focus_pad,
 145                         NULL);
 146
 147   gtk_check_button_draw_indicator (check_button, cr);
 148
 149   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 150   if (gtk_widget_has_focus (widget))
 151     {
 152       GtkStateType state = gtk_widget_get_state (widget);
 153       GtkStyle *style = gtk_widget_get_style (widget);
 154       GtkWidget *child = gtk_bin_get_child (GTK_BIN (widget));
 155       GtkAllocation allocation;
 156
 157       gtk_widget_get_allocation (widget, &allocation);
 158
 159       if (interior_focus && child && gtk_widget_get_visible (child))
 160         {
 161           GtkAllocation child_allocation;
 162
 163           gtk_widget_get_allocation (child, &child_allocation);
 164           gtk_paint_focus (style, cr, state,
 165                            widget, "checkbutton",
 166                            child_allocation.x - allocation.x - focus_width - focus_pad,
 167                            child_allocation.y - allocation.y - focus_width - focus_pad,
 168                            child_allocation.width + 2 * (focus_width + focus_pad),
 169                            child_allocation.height + 2 * (focus_width + focus_pad));
 170         }
 171       else
 172         {
 173           gtk_paint_focus (style, cr, state,
 174                            widget, "checkbutton",
 175                            border_width,
 176                            border_width,
 177                            allocation.width - 2 * border_width,
 178                            allocation.height - 2 * border_width);
 179         }
 180     }
 181 }
 182
 183 void
 184 _gtk_check_button_get_props (GtkCheckButton *check_button,
 185                              gint           *indicator_size,
 186                              gint           *indicator_spacing)
 187 {
 188   GtkWidget *widget =  GTK_WIDGET (check_button);
 189
 190   if (indicator_size)
 191     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
 192
 193   if (indicator_spacing)
 194     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 195 }
 196
 197 static void
 198 gtk_check_button_size_request (GtkWidget      *widget,
 199                                GtkRequisition *requisition)
 200 {
 201   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 202
 203   if (gtk_toggle_button_get_mode (toggle_button))
 204     {
 205       GtkWidget *child;
 206       gint temp;
 207       gint indicator_size;
 208       gint indicator_spacing;
 209       gint focus_width;
 210       gint focus_pad;
 211       guint border_width;
 212
 213       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 214
 215       gtk_widget_style_get (GTK_WIDGET (widget),
 216                             "focus-line-width", &focus_width,
 217                             "focus-padding", &focus_pad,
 218                             NULL);
 219
 220       requisition->width = border_width * 2;
 221       requisition->height = border_width * 2;
 222
 223       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 224                                    &indicator_size, &indicator_spacing);
 225
 226       child = gtk_bin_get_child (GTK_BIN (widget));
 227       if (child && gtk_widget_get_visible (child))
 228         {
 229           GtkRequisition child_requisition;
 230
 231           gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 232
 233           requisition->width += child_requisition.width + indicator_spacing;
 234           requisition->height += child_requisition.height;
 235         }
 236
 237       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 238
 239       temp = indicator_size + indicator_spacing * 2;
 240       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 241     }
 242   else
 243     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_request (widget, requisition);
 244 }
 245
 246 static void
 247 gtk_check_button_size_allocate (GtkWidget     *widget,
 248                                 GtkAllocation *allocation)
 249 {
 250   GtkCheckButton *check_button;
 251   GtkToggleButton *toggle_button;
 252   GtkButton *button;
 253   GtkAllocation child_allocation;
 254
 255   button = GTK_BUTTON (widget);
 256   check_button = GTK_CHECK_BUTTON (widget);
 257   toggle_button = GTK_TOGGLE_BUTTON (widget);
 258
 259   if (gtk_toggle_button_get_mode (toggle_button))
 260     {
 261       GtkWidget *child;
 262       gint indicator_size;
 263       gint indicator_spacing;
 264       gint focus_width;
 265       gint focus_pad;
 266
 267       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 268       gtk_widget_style_get (widget,
 269                             "focus-line-width", &focus_width,
 270                             "focus-padding", &focus_pad,
 271                             NULL);
 272
 273       gtk_widget_set_allocation (widget, allocation);
 274
 275       if (gtk_widget_get_realized (widget))
 276         gdk_window_move_resize (gtk_button_get_event_window (button),
 277                                 allocation->x, allocation->y,
 278                                 allocation->width, allocation->height);
 279
 280       child = gtk_bin_get_child (GTK_BIN (button));
 281       if (child && gtk_widget_get_visible (child))
 282         {
 283           GtkRequisition child_requisition;
 284           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 285
 286           gtk_widget_get_preferred_size (child, &child_requisition, NULL);
 287
 288           child_allocation.width = MIN (child_requisition.width,
 289                                         allocation->width -
 290                                         ((border_width + focus_width + focus_pad) * 2
 291                                          + indicator_size + indicator_spacing * 3));
 292           child_allocation.width = MAX (child_allocation.width, 1);
 293
 294           child_allocation.height = MIN (child_requisition.height,
 295                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 296           child_allocation.height = MAX (child_allocation.height, 1);
 297
 298           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 299                                 allocation->x + focus_width + focus_pad);
 300           child_allocation.y = allocation->y + (allocation->height - child_allocation.height) / 2;
 301
 302           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 303             child_allocation.x = allocation->x + allocation->width
 304               - (child_allocation.x - allocation->x + child_allocation.width);
 305
 306           gtk_widget_size_allocate (child, &child_allocation);
 307         }
 308     }
 309   else
 310     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 311 }
 312
 313 static gint
 314 gtk_check_button_draw (GtkWidget *widget,
 315                        cairo_t   *cr)
 316 {
 317   GtkToggleButton *toggle_button;
 318   GtkBin *bin;
 319   GtkWidget *child;
 320
 321   toggle_button = GTK_TOGGLE_BUTTON (widget);
 322   bin = GTK_BIN (widget);
 323
 324   if (gtk_toggle_button_get_mode (toggle_button))
 325     {
 326       gtk_check_button_paint (widget, cr);
 327
 328       child = gtk_bin_get_child (bin);
 329       if (child)
 330         gtk_container_propagate_draw (GTK_CONTAINER (widget),
 331                                       child,
 332                                       cr);
 333     }
 334   else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw)
 335     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->draw (widget, cr);
 336
 337   return FALSE;
 338 }
 339
 340
 341 static void
 342 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 343                                  cairo_t        *cr)
 344 {
 345   GtkCheckButtonClass *class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 346
 347   if (class->draw_indicator)
 348     class->draw_indicator (check_button, cr);
 349 }
 350
 351 static void
 352 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 353                                       cairo_t        *cr)
 354 {
 355   GtkWidget *widget;
 356   GtkWidget *child;
 357   GtkButton *button;
 358   GtkToggleButton *toggle_button;
 359   GtkStateType state_type;
 360   GtkShadowType shadow_type;
 361   gint x, y;
 362   gint indicator_size;
 363   gint indicator_spacing;
 364   gint focus_width;
 365   gint focus_pad;
 366   guint border_width;
 367   gboolean interior_focus;
 368   GtkAllocation allocation;
 369   GtkStyle *style;
 370   GdkWindow *window;
 371
 372   widget = GTK_WIDGET (check_button);
 373   button = GTK_BUTTON (check_button);
 374   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 375
 376   gtk_widget_get_allocation (widget, &allocation);
 377   style = gtk_widget_get_style (widget);
 378   window = gtk_widget_get_window (widget);
 379
 380   gtk_widget_style_get (widget,
 381                         "interior-focus", &interior_focus,
 382                         "focus-line-width", &focus_width,
 383                         "focus-padding", &focus_pad,
 384                         NULL);
 385
 386   _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 387
 388   border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 389
 390   x = indicator_spacing + border_width;
 391   y = (allocation.height - indicator_size) / 2;
 392
 393   child = gtk_bin_get_child (GTK_BIN (check_button));
 394   if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 395     x += focus_width + focus_pad;
 396
 397   if (gtk_toggle_button_get_inconsistent (toggle_button))
 398     shadow_type = GTK_SHADOW_ETCHED_IN;
 399   else if (gtk_toggle_button_get_active (toggle_button))
 400     shadow_type = GTK_SHADOW_IN;
 401   else
 402     shadow_type = GTK_SHADOW_OUT;
 403
 404   if (button->activate_timeout || (button->button_down && button->in_button))
 405     state_type = GTK_STATE_ACTIVE;
 406   else if (button->in_button)
 407     state_type = GTK_STATE_PRELIGHT;
 408   else if (!gtk_widget_is_sensitive (widget))
 409     state_type = GTK_STATE_INSENSITIVE;
 410   else
 411     state_type = GTK_STATE_NORMAL;
 412
 413   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 414     x = allocation.width - (indicator_size + x);
 415
 416   if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 417     {
 418
 419       gtk_paint_flat_box (style, cr, GTK_STATE_PRELIGHT,
 420                           GTK_SHADOW_ETCHED_OUT,
 421                           widget, "checkbutton",
 422                           border_width, border_width,
 423                           allocation.width - (2 * border_width),
 424                           allocation.height - (2 * border_width));
 425     }
 426
 427   gtk_paint_check (style, cr,
 428                    state_type, shadow_type,
 429                    widget, "checkbutton",
 430                    x, y, indicator_size, indicator_size);
 431 }