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
  46 static GtkToggleButtonClass *parent_class = NULL;
  47
  48
  49 GtkType
  50 gtk_check_button_get_type (void)
  51 {
  52   static GtkType check_button_type = 0;
  53
  54   if (!check_button_type)
  55     {
  56       GtkTypeInfo check_button_info =
  57       {
  58         "GtkCheckButton",
  59         sizeof (GtkCheckButton),
  60         sizeof (GtkCheckButtonClass),
  61         (GtkClassInitFunc) gtk_check_button_class_init,
  62         (GtkObjectInitFunc) gtk_check_button_init,
  63         (GtkArgSetFunc) NULL,
  64         (GtkArgGetFunc) NULL,
  65       };
  66
  67       check_button_type = gtk_type_unique (gtk_toggle_button_get_type (), &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   check_button->toggle_button.draw_indicator = TRUE;
  96 }
  97
  98 GtkWidget*
  99 gtk_check_button_new (void)
 100 {
 101   return GTK_WIDGET (gtk_type_new (gtk_check_button_get_type ()));
 102 }
 103
 104
 105 GtkWidget*
 106 gtk_check_button_new_with_label (const gchar *label)
 107 {
 108   GtkWidget *check_button;
 109   GtkWidget *label_widget;
 110
 111   check_button = gtk_check_button_new ();
 112   label_widget = gtk_label_new (label);
 113   gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
 114
 115   gtk_container_add (GTK_CONTAINER (check_button), label_widget);
 116   gtk_widget_show (label_widget);
 117
 118   return check_button;
 119 }
 120
 121 static void
 122 gtk_check_button_draw (GtkWidget    *widget,
 123                        GdkRectangle *area)
 124 {
 125   GtkButton *button;
 126   GtkCheckButton *check_button;
 127   GdkRectangle child_area;
 128
 129   g_return_if_fail (widget != NULL);
 130   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 131   g_return_if_fail (area != NULL);
 132
 133   if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
 134     {
 135       check_button = GTK_CHECK_BUTTON (widget);
 136
 137       if (check_button->toggle_button.draw_indicator)
 138         {
 139           button = GTK_BUTTON (widget);
 140
 141           gtk_check_button_draw_indicator (check_button, area);
 142
 143           if (button->child && GTK_WIDGET_NO_WINDOW (button->child) &&
 144               gtk_widget_intersect (button->child, area, &child_area))
 145             gtk_widget_draw (button->child, &child_area);
 146
 147           gtk_widget_draw_focus (widget);
 148         }
 149       else
 150         {
 151           if (GTK_WIDGET_CLASS (parent_class)->draw)
 152             (* GTK_WIDGET_CLASS (parent_class)->draw) (widget, area);
 153         }
 154     }
 155 }
 156
 157 static void
 158 gtk_check_button_draw_focus (GtkWidget *widget)
 159 {
 160   GtkCheckButton *check_button;
 161
 162   g_return_if_fail (widget != NULL);
 163   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 164
 165   if (GTK_WIDGET_DRAWABLE (widget))
 166     {
 167       check_button = GTK_CHECK_BUTTON (widget);
 168       if (check_button->toggle_button.draw_indicator)
 169         {
 170           gint border_width;
 171
 172           border_width = GTK_CONTAINER (widget)->border_width;
 173           if (GTK_WIDGET_HAS_FOCUS (widget))
 174             gdk_draw_rectangle (widget->window,
 175                                 widget->style->black_gc, FALSE,
 176                                 border_width, border_width,
 177                                 widget->allocation.width - 2 * border_width - 1,
 178                                 widget->allocation.height - 2 * border_width - 1);
 179           else
 180             gdk_draw_rectangle (widget->window,
 181                                 widget->style->bg_gc[GTK_STATE_NORMAL], FALSE,
 182                                 border_width, border_width,
 183                                 widget->allocation.width - 2 * border_width - 1,
 184                                 widget->allocation.height - 2 * border_width - 1);
 185         }
 186       else
 187         {
 188           if (GTK_WIDGET_CLASS (parent_class)->draw_focus)
 189             (* GTK_WIDGET_CLASS (parent_class)->draw_focus) (widget);
 190         }
 191     }
 192 }
 193
 194 static void
 195 gtk_check_button_size_request (GtkWidget      *widget,
 196                                GtkRequisition *requisition)
 197 {
 198   GtkCheckButton *check_button;
 199   GtkButton *button;
 200   gint temp;
 201
 202   g_return_if_fail (widget != NULL);
 203   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 204   g_return_if_fail (requisition != NULL);
 205
 206   check_button = GTK_CHECK_BUTTON (widget);
 207
 208   if (GTK_WIDGET_CLASS (parent_class)->size_request)
 209     (* GTK_WIDGET_CLASS (parent_class)->size_request) (widget, requisition);
 210
 211   if (check_button->toggle_button.draw_indicator)
 212     {
 213       button = GTK_BUTTON (widget);
 214
 215       requisition->width += (CHECK_BUTTON_CLASS (widget)->indicator_size +
 216                              CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 2);
 217
 218       temp = (CHECK_BUTTON_CLASS (widget)->indicator_size +
 219               CHECK_BUTTON_CLASS (widget)->indicator_spacing * 2);
 220       requisition->height = MAX (requisition->height, temp) + 2;
 221     }
 222 }
 223
 224 static void
 225 gtk_check_button_size_allocate (GtkWidget     *widget,
 226                                 GtkAllocation *allocation)
 227 {
 228   GtkCheckButton *check_button;
 229   GtkButton *button;
 230   GtkAllocation child_allocation;
 231
 232   g_return_if_fail (widget != NULL);
 233   g_return_if_fail (GTK_IS_CHECK_BUTTON (widget));
 234   g_return_if_fail (allocation != NULL);
 235
 236   check_button = GTK_CHECK_BUTTON (widget);
 237   if (check_button->toggle_button.draw_indicator)
 238     {
 239       widget->allocation = *allocation;
 240       if (GTK_WIDGET_REALIZED (widget))
 241         gdk_window_move_resize (widget->window,
 242                                 allocation->x, allocation->y,
 243                                 allocation->width, allocation->height);
 244
 245       button = GTK_BUTTON (widget);
 246
 247       if (button->child && GTK_WIDGET_VISIBLE (button->child))
 248         {
 249           child_allocation.x = (GTK_CONTAINER (widget)->border_width +
 250                                 CHECK_BUTTON_CLASS (widget)->indicator_size +
 251                                 CHECK_BUTTON_CLASS (widget)->indicator_spacing * 3 + 1);
 252           child_allocation.y = GTK_CONTAINER (widget)->border_width + 1;
 253           child_allocation.width = MAX (1, allocation->width - child_allocation.x  -
 254                                     GTK_CONTAINER (widget)->border_width - 1);
 255           child_allocation.height = MAX (1, allocation->height - child_allocation.y * 2);
 256
 257           gtk_widget_size_allocate (button->child, &child_allocation);
 258         }
 259     }
 260   else
 261     {
 262       if (GTK_WIDGET_CLASS (parent_class)->size_allocate)
 263         (* GTK_WIDGET_CLASS (parent_class)->size_allocate) (widget, allocation);
 264     }
 265 }
 266
 267 static gint
 268 gtk_check_button_expose (GtkWidget      *widget,
 269                          GdkEventExpose *event)
 270 {
 271   GtkButton *button;
 272   GtkCheckButton *check_button;
 273   GdkEventExpose child_event;
 274
 275   g_return_val_if_fail (widget != NULL, FALSE);
 276   g_return_val_if_fail (GTK_IS_CHECK_BUTTON (widget), FALSE);
 277   g_return_val_if_fail (event != NULL, FALSE);
 278
 279   if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget))
 280     {
 281       check_button = GTK_CHECK_BUTTON (widget);
 282
 283       if (check_button->toggle_button.draw_indicator)
 284         {
 285           button = GTK_BUTTON (widget);
 286
 287           gtk_check_button_draw_indicator (check_button, &event->area);
 288
 289           child_event = *event;
 290           if (button->child && GTK_WIDGET_NO_WINDOW (button->child) &&
 291               gtk_widget_intersect (button->child, &event->area, &child_event.area))
 292             gtk_widget_event (button->child, (GdkEvent*) &child_event);
 293
 294           gtk_widget_draw_focus (widget);
 295         }
 296       else
 297         {
 298           if (GTK_WIDGET_CLASS (parent_class)->expose_event)
 299             (* GTK_WIDGET_CLASS (parent_class)->expose_event) (widget, event);
 300         }
 301     }
 302
 303   return FALSE;
 304 }
 305
 306
 307 static void
 308 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 309                                  GdkRectangle   *area)
 310 {
 311   GtkCheckButtonClass *class;
 312
 313   g_return_if_fail (check_button != NULL);
 314   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 315   g_return_if_fail (CHECK_BUTTON_CLASS (check_button) != NULL);
 316
 317   class = CHECK_BUTTON_CLASS (check_button);
 318
 319   if (class->draw_indicator)
 320     (* class->draw_indicator) (check_button, area);
 321 }
 322
 323 static void
 324 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 325                                       GdkRectangle    *area)
 326 {
 327   GtkWidget *widget;
 328   GtkToggleButton *toggle_button;
 329   GtkStateType state_type;
 330   GtkShadowType shadow_type;
 331   GdkRectangle restrict_area;
 332   GdkRectangle new_area;
 333   gint width, height;
 334   gint x, y;
 335
 336   g_return_if_fail (check_button != NULL);
 337   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 338
 339   if (GTK_WIDGET_DRAWABLE (check_button))
 340     {
 341       widget = GTK_WIDGET (check_button);
 342       toggle_button = GTK_TOGGLE_BUTTON (check_button);
 343
 344       state_type = GTK_WIDGET_STATE (widget);
 345       if ((state_type != GTK_STATE_NORMAL) &&
 346           (state_type != GTK_STATE_PRELIGHT))
 347         state_type = GTK_STATE_NORMAL;
 348
 349       restrict_area.x = GTK_CONTAINER (widget)->border_width;
 350       restrict_area.y = restrict_area.x;
 351       restrict_area.width = widget->allocation.width - restrict_area.x * 2;
 352       restrict_area.height = widget->allocation.height - restrict_area.x * 2;
 353
 354       if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 355         {
 356           gtk_style_set_background (widget->style, widget->window, state_type);
 357           gdk_window_clear_area (widget->window, new_area.x, new_area.y,
 358                                  new_area.width, new_area.height);
 359         }
 360
 361       x = CHECK_BUTTON_CLASS (widget)->indicator_spacing + GTK_CONTAINER (widget)->border_width;
 362       y = (widget->allocation.height - CHECK_BUTTON_CLASS (widget)->indicator_size) / 2;
 363       width = CHECK_BUTTON_CLASS (widget)->indicator_size;
 364       height = CHECK_BUTTON_CLASS (widget)->indicator_size;
 365
 366       if (GTK_TOGGLE_BUTTON (widget)->active)
 367         shadow_type = GTK_SHADOW_IN;
 368       else
 369         shadow_type = GTK_SHADOW_OUT;
 370
 371       gdk_draw_rectangle (widget->window,
 372                           widget->style->bg_gc[GTK_WIDGET_STATE (widget)],
 373                           TRUE, x + 1, y + 1, width, height);
 374       gtk_draw_shadow (widget->style, widget->window,
 375                        GTK_WIDGET_STATE (widget), shadow_type,
 376                        x + 1, y + 1, width, height);
 377     }
 378 }