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 Free
  16  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18 #include "gtkcheckbutton.h"
  19 #include "gtklabel.h"
  20
  21
  22 #define INDICATOR_SIZE     10
  23 #define INDICATOR_SPACING  2
  24
  25 #define CHECK_BUTTON_CLASS(w)  GTK_CHECK_BUTTON_CLASS (GTK_OBJECT (w)->klass)
  26
  27
  28 static void gtk_check_button_class_init          (GtkCheckButtonClass *klass);
  29 static void gtk_check_button_init                (GtkCheckButton      *check_button);
  30 static void gtk_check_button_draw                (GtkWidget           *widget,
  31                                                   GdkRectangle        *area);
  32 static void gtk_check_button_draw_focus          (GtkWidget           *widget);
  33 static void gtk_check_button_size_request        (GtkWidget           *widget,
  34                                                   GtkRequisition      *requisition);
  35 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  36                                                   GtkAllocation       *allocation);
  37 static gint gtk_check_button_expose              (GtkWidget           *widget,
  38                                                   GdkEventExpose      *event);
  39 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  40                                                   GdkRectangle        *area);
  41 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  42                                                   GdkRectangle        *area);
  43
  44
  45 static GtkToggleButtonClass *parent_class = NULL;
  46
  47
  48 guint
  49 gtk_check_button_get_type ()
  50 {
  51   static guint check_button_type = 0;
  52
  53   if (!check_button_type)
  54     {
  55       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         (GtkArgSetFunc) NULL,
  63         (GtkArgGetFunc) NULL,
  64       };
  65
  66       check_button_type = gtk_type_unique (gtk_toggle_button_get_type (), &check_button_info);
  67     }
  68
  69   return check_button_type;
  70 }
  71
  72 static void
  73 gtk_check_button_class_init (GtkCheckButtonClass *class)
  74 {
  75   GtkWidgetClass *widget_class;
  76
  77   widget_class = (GtkWidgetClass*) class;
  78   parent_class = gtk_type_class (gtk_toggle_button_get_type ());
  79
  80   widget_class->draw = gtk_check_button_draw;
  81   widget_class->draw_focus = gtk_check_button_draw_focus;
  82   widget_class->size_request = gtk_check_button_size_request;
  83   widget_class->size_allocate = gtk_check_button_size_allocate;
  84   widget_class->expose_event = gtk_check_button_expose;
  85
  86   class->indicator_size = INDICATOR_SIZE;
  87   class->indicator_spacing = INDICATOR_SPACING;
  88   class->draw_indicator = gtk_real_check_button_draw_indicator;
  89 }
  90
  91 static void
  92 gtk_check_button_init (GtkCheckButton *check_button)
  93 {
  94   check_button->toggle_button.draw_indicator = TRUE;
  95 }
  96
  97 GtkWidget*
  98 gtk_check_button_new ()
  99 {
 100   return GTK_WIDGET (gtk_type_new (gtk_check_button_get_type ()));
 101 }
 102
 103
 104 GtkWidget*
 105 gtk_check_button_new_with_label (const gchar *label)
 106 {
 107   GtkWidget *check_button;
 108   GtkWidget *label_widget;
 109
 110   check_button = gtk_check_button_new ();
 111   label_widget = gtk_label_new (label);
 112   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 113
 114   gtk_container_add (GTK_CONTAINER (check_button), label_widget);
 115   gtk_widget_show (label_widget);
 116
 117   return check_button;
 118 }
 119
 120 static void
 121 gtk_check_button_draw (GtkWidget    *widget,
 122                        GdkRectangle *area)
 123 {
 124   GtkButton *button;
 125   GtkCheckButton *check_button;
 126   GdkRectangle child_area;
 127
 128   g_return_if_fail (widget != NULL);
 129   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 130   g_return_if_fail (area != NULL);
 131
 132   if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
 133     {
 134       check_button = GTK_CHECK_BUTTON (widget);
 135
 136       if (check_button->toggle_button.draw_indicator)
 137         {
 138           button = GTK_BUTTON (widget);
 139
 140           gtk_check_button_draw_indicator (check_button, area);
 141
 142           if (button->child && GTK_WIDGET_NO_WINDOW (button->child) &&
 143               gtk_widget_intersect (button->child, area, &child_area))
 144             gtk_widget_draw (button->child, &child_area);
 145
 146           gtk_widget_draw_focus (widget);
 147         }
 148       else
 149         {
 150           if (GTK_WIDGET_CLASS (parent_class)->draw)
 151             (* GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
 152         }
 153     }
 154 }
 155
 156 static void
 157 gtk_check_button_draw_focus (GtkWidget *widget)
 158 {
 159   GtkCheckButton *check_button;
 160
 161   g_return_if_fail (widget != NULL);
 162   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 163
 164   if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
 165     {
 166       check_button = GTK_CHECK_BUTTON (widget);
 167       if (check_button->toggle_button.draw_indicator)
 168         {
 169           if (GTK_WIDGET_HAS_FOCUS (widget))
 170             gdk_draw_rectangle (widget->window,
 171                                 widget->style->black_gc, FALSE, 0, 0,
 172                                 widget->allocation.width - 1,
 173                                 widget->allocation.height - 1);
 174           else
 175             gdk_draw_rectangle (widget->window,
 176                                 widget->style->bg_gc[GTK_STATE_NORMAL], FALSE, 0, 0,
 177                                 widget->allocation.width - 1,
 178                                 widget->allocation.height - 1);
 179         }
 180       else
 181         {
 182           if (GTK_WIDGET_CLASS (parent_class)->draw_focus)
 183             (* GTK_WIDGET_CLASS (parent_class)->draw_focus) (widget);
 184         }
 185     }
 186 }
 187
 188 static void
 189 gtk_check_button_size_request (GtkWidget      *widget,
 190                                GtkRequisition *requisition)
 191 {
 192   GtkCheckButton *check_button;
 193   GtkButton *button;
 194   gint temp;
 195
 196   g_return_if_fail (widget != NULL);
 197   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 198   g_return_if_fail (requisition != NULL);
 199
 200   check_button = GTK_CHECK_BUTTON (widget);
 201
 202   if (GTK_WIDGET_CLASS (parent_class)->size_request)
 203     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 204
 205   if (check_button->toggle_button.draw_indicator)
 206     {
 207       button = GTK_BUTTON (widget);
 208
 209       requisition->width += (CHECK_BUTTON_CLASS (widget)->indicator_size +
 210                              CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 2);
 211
 212       temp = (CHECK_BUTTON_CLASS (widget)->indicator_size +
 213               CHECK_BUTTON_CLASS (widget)->indicator_spacing * 2);
 214       requisition->height = MAX (requisition->height, temp) + 2;
 215     }
 216 }
 217
 218 static void
 219 gtk_check_button_size_allocate (GtkWidget     *widget,
 220                                 GtkAllocation *allocation)
 221 {
 222   GtkCheckButton *check_button;
 223   GtkButton *button;
 224   GtkAllocation child_allocation;
 225
 226   g_return_if_fail (widget != NULL);
 227   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 228   g_return_if_fail (allocation != NULL);
 229
 230   check_button = GTK_CHECK_BUTTON (widget);
 231   if (check_button->toggle_button.draw_indicator)
 232     {
 233       widget->allocation = *allocation;
 234       if (GTK_WIDGET_REALIZED (widget))
 235         gdk_window_move_resize (widget->window,
 236                                 allocation->x, allocation->y,
 237                                 allocation->width, allocation->height);
 238
 239       button = GTK_BUTTON (widget);
 240
 241       if (button->child && GTK_WIDGET_VISIBLE (button->child))
 242         {
 243           child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 244                                 CHECK_BUTTON_CLASS (widget)->indicator_size +
 245                                 CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 1);
 246           child_allocation.y = GTK_CONTAINER (widget)->border_width + 1;
 247           child_allocation.width = (allocation->width - child_allocation.x  -
 248                                     GTK_CONTAINER (widget)->border_width - 1);
 249           child_allocation.height = allocation->height - child_allocation.y * 2;
 250
 251           gtk_widget_size_allocate (button->child, &child_allocation);
 252         }
 253     }
 254   else
 255     {
 256       if (GTK_WIDGET_CLASS (parent_class)->size_allocate)
 257         (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 258     }
 259 }
 260
 261 static gint
 262 gtk_check_button_expose (GtkWidget      *widget,
 263                          GdkEventExpose *event)
 264 {
 265   GtkButton *button;
 266   GtkCheckButton *check_button;
 267   GdkEventExpose child_event;
 268
 269   g_return_val_if_fail (widget != NULL, FALSE);
 270   g_return_val_if_fail (GTK_IS_CHECK_BUTTON (widget), FALSE);
 271   g_return_val_if_fail (event != NULL, FALSE);
 272
 273   if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
 274     {
 275       check_button = GTK_CHECK_BUTTON (widget);
 276
 277       if (check_button->toggle_button.draw_indicator)
 278         {
 279           button = GTK_BUTTON (widget);
 280
 281           gtk_check_button_draw_indicator (check_button, &event->area);
 282
 283           child_event = *event;
 284           if (button->child && GTK_WIDGET_NO_WINDOW (button->child) &&
 285               gtk_widget_intersect (button->child, &event->area, &child_event.area))
 286             gtk_widget_event (button->child, (GdkEvent*) &child_event);
 287
 288           gtk_widget_draw_focus (widget);
 289         }
 290       else
 291         {
 292           if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 293             (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 294         }
 295     }
 296
 297   return FALSE;
 298 }
 299
 300
 301 static void
 302 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 303                                  GdkRectangle   *area)
 304 {
 305   GtkCheckButtonClass *class;
 306
 307   g_return_if_fail (check_button != NULL);
 308   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 309   g_return_if_fail (CHECK_BUTTON_CLASS (check_button) != NULL);
 310
 311   class = CHECK_BUTTON_CLASS (check_button);
 312
 313   if (class->draw_indicator)
 314     (* class->draw_indicator) (check_button, area);
 315 }
 316
 317 static void
 318 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 319                                       GdkRectangle    *area)
 320 {
 321   GtkWidget *widget;
 322   GtkToggleButton *toggle_button;
 323   GtkStateType state_type;
 324   GtkShadowType shadow_type;
 325   gint width, height;
 326   gint x, y;
 327
 328   g_return_if_fail (check_button != NULL);
 329   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 330
 331   if (GTK_WIDGET_DRAWABLE (check_button))
 332     {
 333       widget = GTK_WIDGET (check_button);
 334       toggle_button = GTK_TOGGLE_BUTTON (check_button);
 335
 336       state_type = GTK_WIDGET_STATE (widget);
 337       if ((state_type != GTK_STATE_NORMAL) &&
 338           (state_type != GTK_STATE_PRELIGHT))
 339         state_type = GTK_STATE_NORMAL;
 340
 341       gtk_style_set_background (widget->style, widget->window, state_type);
 342       gdk_window_clear_area (widget->window, area->x, area->y, area->width, area->height);
 343
 344       x = CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
 345       y = (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2;
 346       width = CHECK_BUTTON_CLASS (widget)->indicator_size;
 347       height = CHECK_BUTTON_CLASS (widget)->indicator_size;
 348
 349       if (GTK_WIDGET_STATE (widget) == GTK_STATE_ACTIVE)
 350         shadow_type = GTK_SHADOW_IN;
 351       else if ((GTK_WIDGET_STATE (widget) == GTK_STATE_PRELIGHT) && toggle_button->active)
 352         shadow_type = GTK_SHADOW_IN;
 353       else
 354         shadow_type = GTK_SHADOW_OUT;
 355
 356       gdk_draw_rectangle (widget->window,
 357                           widget->style->bg_gc[GTK_WIDGET_STATE (widget)],
 358                           TRUE, x + 1, y + 1, width, height);
 359       gtk_draw_shadow (widget->style, widget->window,
 360                        GTK_WIDGET_STATE (widget), shadow_type,
 361                        x + 1, y + 1, width, height);
 362     }
 363 }