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 Library 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  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library 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 1997-1999.  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 "gtkcheckbutton.h"
  28 #include "gtklabel.h"
  29
  30
  31 #define INDICATOR_SIZE     10
  32 #define INDICATOR_SPACING  2
  33
  34
  35 static void gtk_check_button_class_init          (GtkCheckButtonClass *klass);
  36 static void gtk_check_button_init                (GtkCheckButton      *check_button);
  37 static void gtk_check_button_draw                (GtkWidget           *widget,
  38                                                   GdkRectangle        *area);
  39 static void gtk_check_button_draw_focus          (GtkWidget           *widget);
  40 static void gtk_check_button_size_request        (GtkWidget           *widget,
  41                                                   GtkRequisition      *requisition);
  42 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  43                                                   GtkAllocation       *allocation);
  44 static gint gtk_check_button_expose              (GtkWidget           *widget,
  45                                                   GdkEventExpose      *event);
  46 static void gtk_check_button_paint               (GtkWidget           *widget,
  47                                                   GdkRectangle        *area);
  48 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  49                                                   GdkRectangle        *area);
  50 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  51                                                   GdkRectangle        *area);
  52
  53 static GtkToggleButtonClass *parent_class = NULL;
  54
  55
  56 GtkType
  57 gtk_check_button_get_type (void)
  58 {
  59   static GtkType check_button_type = 0;
  60
  61   if (!check_button_type)
  62     {
  63       static const GtkTypeInfo check_button_info =
  64       {
  65         "GtkCheckButton",
  66         sizeof (GtkCheckButton),
  67         sizeof (GtkCheckButtonClass),
  68         (GtkClassInitFunc) gtk_check_button_class_init,
  69         (GtkObjectInitFunc) gtk_check_button_init,
  70         /* reserved_1 */ NULL,
  71         /* reserved_2 */ NULL,
  72         (GtkClassInitFunc) NULL,
  73       };
  74
  75       check_button_type = gtk_type_unique (GTK_TYPE_TOGGLE_BUTTON, &check_button_info);
  76     }
  77
  78   return check_button_type;
  79 }
  80
  81 static void
  82 gtk_check_button_class_init (GtkCheckButtonClass *class)
  83 {
  84   GtkWidgetClass *widget_class;
  85
  86   widget_class = (GtkWidgetClass*) class;
  87   parent_class = gtk_type_class (gtk_toggle_button_get_type ());
  88
  89   widget_class->draw = gtk_check_button_draw;
  90   widget_class->draw_focus = gtk_check_button_draw_focus;
  91   widget_class->size_request = gtk_check_button_size_request;
  92   widget_class->size_allocate = gtk_check_button_size_allocate;
  93   widget_class->expose_event = gtk_check_button_expose;
  94
  95   class->indicator_size = INDICATOR_SIZE;
  96   class->indicator_spacing = INDICATOR_SPACING;
  97   class->draw_indicator = gtk_real_check_button_draw_indicator;
  98 }
  99
 100 static void
 101 gtk_check_button_init (GtkCheckButton *check_button)
 102 {
 103   GTK_WIDGET_SET_FLAGS (check_button, GTK_NO_WINDOW);
 104   GTK_WIDGET_UNSET_FLAGS (check_button, GTK_RECEIVES_DEFAULT);
 105   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
 106 }
 107
 108 GtkWidget*
 109 gtk_check_button_new (void)
 110 {
 111   return gtk_widget_new (GTK_TYPE_CHECK_BUTTON, NULL);
 112 }
 113
 114
 115 GtkWidget*
 116 gtk_check_button_new_with_label (const gchar *label)
 117 {
 118   GtkWidget *check_button;
 119   GtkWidget *label_widget;
 120
 121   check_button = gtk_check_button_new ();
 122   label_widget = gtk_label_new (label);
 123   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 124
 125   gtk_container_add (GTK_CONTAINER (check_button), label_widget);
 126   gtk_widget_show (label_widget);
 127
 128   return check_button;
 129 }
 130
 131 /* This should only be called when toggle_button->draw_indicator
 132  * is true.
 133  */
 134 static void
 135 gtk_check_button_paint (GtkWidget    *widget,
 136                         GdkRectangle *area)
 137 {
 138   GtkCheckButton *check_button;
 139
 140   g_return_if_fail (widget != NULL);
 141   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 142
 143   check_button = GTK_CHECK_BUTTON (widget);
 144
 145   if (GTK_WIDGET_DRAWABLE (widget))
 146     {
 147       gint border_width;
 148
 149       gtk_check_button_draw_indicator (check_button, area);
 150
 151       border_width = GTK_CONTAINER (widget)->border_width;
 152       if (GTK_WIDGET_HAS_FOCUS (widget))
 153         gtk_paint_focus (widget->style, widget->window,
 154                          NULL, widget, "checkbutton",
 155                          border_width + widget->allocation.x,
 156                          border_width + widget->allocation.y,
 157                          widget->allocation.width - 2 * border_width - 1,
 158                          widget->allocation.height - 2 * border_width - 1);
 159     }
 160 }
 161
 162 static void
 163 gtk_check_button_draw (GtkWidget    *widget,
 164                        GdkRectangle *area)
 165 {
 166   GtkCheckButton *check_button;
 167   GtkToggleButton *toggle_button;
 168   GtkBin *bin;
 169   GdkRectangle child_area;
 170
 171   g_return_if_fail (widget != NULL);
 172   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 173   g_return_if_fail (area != NULL);
 174
 175   check_button = GTK_CHECK_BUTTON (widget);
 176   toggle_button = GTK_TOGGLE_BUTTON (widget);
 177   bin = GTK_BIN (widget);
 178
 179   if (GTK_WIDGET_DRAWABLE (widget))
 180     {
 181       if (toggle_button->draw_indicator)
 182         {
 183           gtk_check_button_paint (widget, area);
 184
 185           if (bin->child && gtk_widget_intersect (bin->child, area, &child_area))
 186             gtk_widget_draw (bin->child, &child_area);
 187         }
 188       else
 189         {
 190           if (GTK_WIDGET_CLASS (parent_class)->draw)
 191             (* GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
 192         }
 193     }
 194 }
 195
 196 static void
 197 gtk_check_button_draw_focus (GtkWidget *widget)
 198 {
 199   gint border_width;
 200
 201   g_return_if_fail (widget != NULL);
 202   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 203
 204   border_width = GTK_CONTAINER (widget)->border_width;
 205   gtk_widget_queue_clear_area (widget->parent,
 206                                border_width + widget->allocation.x,
 207                                border_width + widget->allocation.y,
 208                                widget->allocation.width - 2 * border_width,
 209                                widget->allocation.height - 2 * border_width);
 210 }
 211
 212 static void
 213 gtk_check_button_size_request (GtkWidget      *widget,
 214                                GtkRequisition *requisition)
 215 {
 216   GtkToggleButton *toggle_button;
 217   gint temp;
 218
 219   g_return_if_fail (widget != NULL);
 220   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 221   g_return_if_fail (requisition != NULL);
 222
 223   toggle_button = GTK_TOGGLE_BUTTON (widget);
 224
 225   if (GTK_WIDGET_CLASS (parent_class)->size_request)
 226     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 227
 228   if (toggle_button->draw_indicator)
 229     {
 230       requisition->width += (GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size +
 231                              GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_spacing * 3 + 2);
 232
 233       temp = (GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size +
 234               GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_spacing * 2);
 235       requisition->height = MAX (requisition->height, temp) + 2;
 236     }
 237 }
 238
 239 static void
 240 gtk_check_button_size_allocate (GtkWidget     *widget,
 241                                 GtkAllocation *allocation)
 242 {
 243   GtkCheckButton *check_button;
 244   GtkToggleButton *toggle_button;
 245   GtkButton *button;
 246   GtkAllocation child_allocation;
 247
 248   g_return_if_fail (widget != NULL);
 249   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 250   g_return_if_fail (allocation != NULL);
 251
 252   check_button = GTK_CHECK_BUTTON (widget);
 253   toggle_button = GTK_TOGGLE_BUTTON (widget);
 254
 255   if (toggle_button->draw_indicator)
 256     {
 257       widget->allocation = *allocation;
 258       if (GTK_WIDGET_REALIZED (widget))
 259         gdk_window_move_resize (toggle_button->event_window,
 260                                 allocation->x, allocation->y,
 261                                 allocation->width, allocation->height);
 262
 263       button = GTK_BUTTON (widget);
 264
 265       if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 266         {
 267           child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 268                                 GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size +
 269                                 GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_spacing * 3 + 1 +
 270                                 widget->allocation.x);
 271           child_allocation.y = GTK_CONTAINER (widget)->border_width + 1 +
 272             widget->allocation.y;
 273           child_allocation.width = MAX (1, allocation->width -
 274                                         (GTK_CONTAINER (widget)->border_width +
 275                                          GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size +
 276                                          GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_spacing * 3 + 1)  -
 277                                         GTK_CONTAINER (widget)->border_width - 1);
 278           child_allocation.height = MAX (1, allocation->height - (GTK_CONTAINER (widget)->border_width + 1) * 2);
 279
 280           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 281             child_allocation.x = allocation->x + allocation->width
 282               - (child_allocation.x - allocation->x + child_allocation.width);
 283
 284           gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 285         }
 286     }
 287   else
 288     {
 289       if (GTK_WIDGET_CLASS (parent_class)->size_allocate)
 290         (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 291     }
 292 }
 293
 294 static gint
 295 gtk_check_button_expose (GtkWidget      *widget,
 296                          GdkEventExpose *event)
 297 {
 298   GtkCheckButton *check_button;
 299   GtkToggleButton *toggle_button;
 300   GtkBin *bin;
 301   GdkEventExpose child_event;
 302
 303   g_return_val_if_fail (widget != NULL, FALSE);
 304   g_return_val_if_fail (GTK_IS_CHECK_BUTTON (widget), FALSE);
 305   g_return_val_if_fail (event != NULL, FALSE);
 306
 307   check_button = GTK_CHECK_BUTTON (widget);
 308   toggle_button = GTK_TOGGLE_BUTTON (widget);
 309   bin = GTK_BIN (widget);
 310
 311   if (GTK_WIDGET_DRAWABLE (widget))
 312     {
 313       if (toggle_button->draw_indicator)
 314         {
 315           gtk_check_button_paint (widget, &event->area);
 316
 317           child_event = *event;
 318           if (bin->child && GTK_WIDGET_NO_WINDOW (bin->child) &&
 319               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 320             gtk_widget_event (bin->child, (GdkEvent*) &child_event);
 321         }
 322       else
 323         {
 324           if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 325             (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 326         }
 327     }
 328
 329   return FALSE;
 330 }
 331
 332
 333 static void
 334 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 335                                  GdkRectangle   *area)
 336 {
 337   GtkCheckButtonClass *class;
 338
 339   g_return_if_fail (check_button != NULL);
 340   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 341
 342   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 343
 344   if (class->draw_indicator)
 345     (* class->draw_indicator) (check_button, area);
 346 }
 347
 348 static void
 349 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 350                                       GdkRectangle   *area)
 351 {
 352   GtkWidget *widget;
 353   GtkToggleButton *toggle_button;
 354   GtkStateType state_type;
 355   GtkShadowType shadow_type;
 356   GdkRectangle restrict_area;
 357   GdkRectangle new_area;
 358   gint width, height;
 359   gint x, y;
 360   GdkWindow *window;
 361
 362   g_return_if_fail (check_button != NULL);
 363   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 364
 365   widget = GTK_WIDGET (check_button);
 366   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 367
 368   if (GTK_WIDGET_DRAWABLE (check_button))
 369     {
 370       window = widget->window;
 371
 372       state_type = GTK_WIDGET_STATE (widget);
 373       if (state_type != GTK_STATE_NORMAL &&
 374           state_type != GTK_STATE_PRELIGHT)
 375         state_type = GTK_STATE_NORMAL;
 376
 377       restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
 378       restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
 379       restrict_area.width = widget->allocation.width - ( 2 * GTK_CONTAINER (widget)->border_width);
 380       restrict_area.height = widget->allocation.height - ( 2 * GTK_CONTAINER (widget)->border_width);
 381
 382       if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 383         {
 384           if (state_type != GTK_STATE_NORMAL)
 385             gtk_paint_flat_box (widget->style, window, state_type,
 386                                 GTK_SHADOW_ETCHED_OUT,
 387                                 area, widget, "checkbutton",
 388                                 new_area.x, new_area.y,
 389                                 new_area.width, new_area.height);
 390         }
 391
 392       x = widget->allocation.x + GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
 393       y = widget->allocation.y + (widget->allocation.height - GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size) / 2;
 394       width = GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size;
 395       height = GTK_CHECK_BUTTON_GET_CLASS (widget)->indicator_size;
 396
 397       if (GTK_TOGGLE_BUTTON (widget)->active)
 398         {
 399           state_type = GTK_STATE_ACTIVE;
 400           shadow_type = GTK_SHADOW_IN;
 401         }
 402       else
 403         {
 404           shadow_type = GTK_SHADOW_OUT;
 405           state_type = GTK_WIDGET_STATE (widget);
 406         }
 407
 408       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 409         x = widget->allocation.x + widget->allocation.width - (width + x - widget->allocation.x);
 410
 411       gtk_paint_check (widget->style, window,
 412                        state_type, shadow_type,
 413                        area, widget, "checkbutton",
 414                        x, y, width, height);
 415     }
 416 }