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 #include "gtkcheckbutton.h"
  20 #include "gtklabel.h"
  21
  22
  23 #define INDICATOR_SIZE     10
  24 #define INDICATOR_SPACING  2
  25
  26 #define CHECK_BUTTON_CLASS(w)  GTK_CHECK_BUTTON_CLASS (GTK_OBJECT (w)->klass)
  27
  28
  29 static void gtk_check_button_class_init          (GtkCheckButtonClass *klass);
  30 static void gtk_check_button_init                (GtkCheckButton      *check_button);
  31 static void gtk_check_button_draw                (GtkWidget           *widget,
  32                                                   GdkRectangle        *area);
  33 static void gtk_check_button_draw_focus          (GtkWidget           *widget);
  34 static void gtk_check_button_size_request        (GtkWidget           *widget,
  35                                                   GtkRequisition      *requisition);
  36 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  37                                                   GtkAllocation       *allocation);
  38 static gint gtk_check_button_expose              (GtkWidget           *widget,
  39                                                   GdkEventExpose      *event);
  40 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  41                                                   GdkRectangle        *area);
  42 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  43                                                   GdkRectangle        *area);
  44
  45 static GtkToggleButtonClass *parent_class = NULL;
  46
  47
  48 GtkType
  49 gtk_check_button_get_type (void)
  50 {
  51   static GtkType check_button_type = 0;
  52
  53   if (!check_button_type)
  54     {
  55       static const GtkTypeInfo check_button_info =
  56       {
  57         "GtkCheckButton",
  58         sizeof (GtkCheckButton),
  59         sizeof (GtkCheckButtonClass),
  60         (GtkClassInitFunc) gtk_check_button_class_init,
  61         (GtkObjectInitFunc) gtk_check_button_init,
  62         /* reserved_1 */ NULL,
  63         /* reserved_2 */ NULL,
  64         (GtkClassInitFunc) NULL,
  65       };
  66
  67       check_button_type = gtk_type_unique (GTK_TYPE_TOGGLE_BUTTON, &check_button_info);
  68     }
  69
  70   return check_button_type;
  71 }
  72
  73 static void
  74 gtk_check_button_class_init (GtkCheckButtonClass *class)
  75 {
  76   GtkWidgetClass *widget_class;
  77
  78   widget_class = (GtkWidgetClass*) class;
  79   parent_class = gtk_type_class (gtk_toggle_button_get_type ());
  80
  81   widget_class->draw = gtk_check_button_draw;
  82   widget_class->draw_focus = gtk_check_button_draw_focus;
  83   widget_class->size_request = gtk_check_button_size_request;
  84   widget_class->size_allocate = gtk_check_button_size_allocate;
  85   widget_class->expose_event = gtk_check_button_expose;
  86
  87   class->indicator_size = INDICATOR_SIZE;
  88   class->indicator_spacing = INDICATOR_SPACING;
  89   class->draw_indicator = gtk_real_check_button_draw_indicator;
  90 }
  91
  92 static void
  93 gtk_check_button_init (GtkCheckButton *check_button)
  94 {
  95   GTK_WIDGET_SET_FLAGS (check_button, GTK_NO_WINDOW);
  96   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
  97 }
  98
  99 GtkWidget*
 100 gtk_check_button_new (void)
 101 {
 102   return gtk_widget_new (GTK_TYPE_CHECK_BUTTON, NULL);
 103 }
 104
 105
 106 GtkWidget*
 107 gtk_check_button_new_with_label (const gchar *label)
 108 {
 109   GtkWidget *check_button;
 110   GtkWidget *label_widget;
 111
 112   check_button = gtk_check_button_new ();
 113   label_widget = gtk_label_new (label);
 114   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 115
 116   gtk_container_add (GTK_CONTAINER (check_button), label_widget);
 117   gtk_widget_show (label_widget);
 118
 119   return check_button;
 120 }
 121
 122 static void
 123 gtk_check_button_draw (GtkWidget    *widget,
 124                        GdkRectangle *area)
 125 {
 126   GtkCheckButton *check_button;
 127   GtkToggleButton *toggle_button;
 128   GtkBin *bin;
 129   GdkRectangle child_area;
 130
 131   g_return_if_fail (widget != NULL);
 132   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 133   g_return_if_fail (area != NULL);
 134
 135   check_button = GTK_CHECK_BUTTON (widget);
 136   toggle_button = GTK_TOGGLE_BUTTON (widget);
 137   bin = GTK_BIN (widget);
 138
 139   if (GTK_WIDGET_DRAWABLE (widget))
 140     {
 141       if (toggle_button->draw_indicator)
 142         {
 143           gint border_width;
 144
 145           gtk_check_button_draw_indicator (check_button, area);
 146
 147           border_width = GTK_CONTAINER (widget)->border_width;
 148           if (GTK_WIDGET_HAS_FOCUS (widget))
 149             gtk_paint_focus (widget->style, widget->window,
 150                              NULL, widget, "checkbutton",
 151                              border_width + widget->allocation.x,
 152                              border_width + widget->allocation.y,
 153                              widget->allocation.width - 2 * border_width - 1,
 154                              widget->allocation.height - 2 * border_width - 1);
 155
 156           if (bin->child && GTK_WIDGET_NO_WINDOW (bin->child) &&
 157               gtk_widget_intersect (bin->child, area, &child_area))
 158             gtk_widget_draw (bin->child, &child_area);
 159         }
 160       else
 161         {
 162           if (GTK_WIDGET_CLASS (parent_class)->draw)
 163             (* GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
 164         }
 165     }
 166 }
 167
 168 static void
 169 gtk_check_button_draw_focus (GtkWidget *widget)
 170 {
 171   gint border_width;
 172
 173   g_return_if_fail (widget != NULL);
 174   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 175
 176   border_width = GTK_CONTAINER (widget)->border_width;
 177   gtk_widget_queue_clear_area (widget->parent,
 178                                border_width + widget->allocation.x,
 179                                border_width + widget->allocation.y,
 180                                widget->allocation.width - 2 * border_width,
 181                                widget->allocation.height - 2 * border_width);
 182 }
 183
 184 static void
 185 gtk_check_button_size_request (GtkWidget      *widget,
 186                                GtkRequisition *requisition)
 187 {
 188   GtkToggleButton *toggle_button;
 189   gint temp;
 190
 191   g_return_if_fail (widget != NULL);
 192   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 193   g_return_if_fail (requisition != NULL);
 194
 195   toggle_button = GTK_TOGGLE_BUTTON (widget);
 196
 197   if (GTK_WIDGET_CLASS (parent_class)->size_request)
 198     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 199
 200   if (toggle_button->draw_indicator)
 201     {
 202       requisition->width += (CHECK_BUTTON_CLASS (widget)->indicator_size +
 203                              CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 2);
 204
 205       temp = (CHECK_BUTTON_CLASS (widget)->indicator_size +
 206               CHECK_BUTTON_CLASS (widget)->indicator_spacing * 2);
 207       requisition->height = MAX (requisition->height, temp) + 2;
 208     }
 209 }
 210
 211 static void
 212 gtk_check_button_size_allocate (GtkWidget     *widget,
 213                                 GtkAllocation *allocation)
 214 {
 215   GtkCheckButton *check_button;
 216   GtkToggleButton *toggle_button;
 217   GtkButton *button;
 218   GtkAllocation child_allocation;
 219
 220   g_return_if_fail (widget != NULL);
 221   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 222   g_return_if_fail (allocation != NULL);
 223
 224   check_button = GTK_CHECK_BUTTON (widget);
 225   toggle_button = GTK_TOGGLE_BUTTON (widget);
 226
 227   if (toggle_button->draw_indicator)
 228     {
 229       widget->allocation = *allocation;
 230       if (GTK_WIDGET_REALIZED (widget))
 231         gdk_window_move_resize (toggle_button->event_window,
 232                                 allocation->x, allocation->y,
 233                                 allocation->width, allocation->height);
 234
 235       button = GTK_BUTTON (widget);
 236
 237       if (GTK_BIN (button)->child && GTK_WIDGET_VISIBLE (GTK_BIN (button)->child))
 238         {
 239           child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 240                                 CHECK_BUTTON_CLASS (widget)->indicator_size +
 241                                 CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 1 +
 242                                 widget->allocation.x);
 243           child_allocation.y = GTK_CONTAINER (widget)->border_width + 1 +
 244             widget->allocation.y;
 245           child_allocation.width = MAX (1, allocation->width -
 246                                         (GTK_CONTAINER (widget)->border_width +
 247                                          CHECK_BUTTON_CLASS (widget)->indicator_size +
 248                                          CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 1)  -
 249                                         GTK_CONTAINER (widget)->border_width - 1);
 250           child_allocation.height = MAX (1, allocation->height - (GTK_CONTAINER (widget)->border_width + 1) * 2);
 251
 252           gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 253         }
 254     }
 255   else
 256     {
 257       if (GTK_WIDGET_CLASS (parent_class)->size_allocate)
 258         (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 259     }
 260 }
 261
 262 static gint
 263 gtk_check_button_expose (GtkWidget      *widget,
 264                          GdkEventExpose *event)
 265 {
 266   GtkCheckButton *check_button;
 267   GtkToggleButton *toggle_button;
 268   GtkBin *bin;
 269   GdkEventExpose child_event;
 270
 271   g_return_val_if_fail (widget != NULL, FALSE);
 272   g_return_val_if_fail (GTK_IS_CHECK_BUTTON (widget), FALSE);
 273   g_return_val_if_fail (event != NULL, FALSE);
 274
 275   check_button = GTK_CHECK_BUTTON (widget);
 276   toggle_button = GTK_TOGGLE_BUTTON (widget);
 277   bin = GTK_BIN (widget);
 278
 279   if (GTK_WIDGET_DRAWABLE (widget))
 280     {
 281       if (toggle_button->draw_indicator)
 282         {
 283           gtk_check_button_draw_indicator (check_button, &event->area);
 284
 285           child_event = *event;
 286           if (bin->child && GTK_WIDGET_NO_WINDOW (bin->child) &&
 287               gtk_widget_intersect (bin->child, &event->area, &child_event.area))
 288             gtk_widget_event (bin->child, (GdkEvent*) &child_event);
 289
 290           gtk_widget_draw_focus (widget);
 291         }
 292       else
 293         {
 294           if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 295             (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 296         }
 297     }
 298
 299   return FALSE;
 300 }
 301
 302
 303 static void
 304 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 305                                  GdkRectangle   *area)
 306 {
 307   GtkCheckButtonClass *class;
 308
 309   g_return_if_fail (check_button != NULL);
 310   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 311
 312   class = CHECK_BUTTON_CLASS (check_button);
 313
 314   if (class->draw_indicator)
 315     (* class->draw_indicator) (check_button, area);
 316 }
 317
 318 static void
 319 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 320                                       GdkRectangle   *area)
 321 {
 322   GtkWidget *widget;
 323   GtkToggleButton *toggle_button;
 324   GtkStateType state_type;
 325   GtkShadowType shadow_type;
 326   GdkRectangle restrict_area;
 327   GdkRectangle new_area;
 328   gint width, height;
 329   gint x, y;
 330   GdkWindow *window;
 331
 332   g_return_if_fail (check_button != NULL);
 333   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 334
 335   widget = GTK_WIDGET (check_button);
 336   toggle_button = GTK_TOGGLE_BUTTON (check_button);
 337
 338   if (GTK_WIDGET_DRAWABLE (check_button))
 339     {
 340       window = widget->window;
 341
 342       state_type = GTK_WIDGET_STATE (widget);
 343       if (state_type != GTK_STATE_NORMAL &&
 344           state_type != GTK_STATE_PRELIGHT)
 345         state_type = GTK_STATE_NORMAL;
 346
 347       restrict_area.x = widget->allocation.x + GTK_CONTAINER (widget)->border_width;
 348       restrict_area.y = widget->allocation.y + GTK_CONTAINER (widget)->border_width;
 349       restrict_area.width = widget->allocation.width - ( 2 * GTK_CONTAINER (widget)->border_width);
 350       restrict_area.height = widget->allocation.height - ( 2 * GTK_CONTAINER (widget)->border_width);
 351
 352       if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 353         {
 354           if (state_type != GTK_STATE_NORMAL)
 355             gtk_paint_flat_box (widget->style, window, state_type,
 356                                 GTK_SHADOW_ETCHED_OUT,
 357                                 area, widget, "checkbutton",
 358                                 new_area.x, new_area.y,
 359                                 new_area.width, new_area.height);
 360         }
 361
 362       x = widget->allocation.x + CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
 363       y = widget->allocation.y + (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2;
 364       width = CHECK_BUTTON_CLASS (widget)->indicator_size;
 365       height = CHECK_BUTTON_CLASS (widget)->indicator_size;
 366
 367       if (GTK_TOGGLE_BUTTON (widget)->active)
 368         shadow_type = GTK_SHADOW_IN;
 369       else
 370         shadow_type = GTK_SHADOW_OUT;
 371
 372       gtk_paint_check (widget->style, window,
 373                        GTK_WIDGET_STATE (widget), shadow_type,
 374                        area, widget, "checkbutton",
 375                        x + 1, y + 1, width, height);
 376     }
 377 }