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