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 Lesser 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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser 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 1997-2000.  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 "config.h"
  28 #include "gtkcheckbutton.h"
  29 #include "gtklabel.h"
  30 #include "gtkprivate.h"
  31 #include "gtkintl.h"
  32
  33
  34 #define INDICATOR_SIZE     13
  35 #define INDICATOR_SPACING  2
  36
  37
  38 static void gtk_check_button_size_request        (GtkWidget           *widget,
  39                                                   GtkRequisition      *requisition);
  40 static void gtk_check_button_size_allocate       (GtkWidget           *widget,
  41                                                   GtkAllocation       *allocation);
  42 static gint gtk_check_button_expose              (GtkWidget           *widget,
  43                                                   GdkEventExpose      *event);
  44 static void gtk_check_button_paint               (GtkWidget           *widget,
  45                                                   GdkRectangle        *area);
  46 static void gtk_check_button_draw_indicator      (GtkCheckButton      *check_button,
  47                                                   GdkRectangle        *area);
  48 static void gtk_real_check_button_draw_indicator (GtkCheckButton      *check_button,
  49                                                   GdkRectangle        *area);
  50
  51 G_DEFINE_TYPE (GtkCheckButton, gtk_check_button, GTK_TYPE_TOGGLE_BUTTON)
  52
  53 static void
  54 gtk_check_button_class_init (GtkCheckButtonClass *class)
  55 {
  56   GtkWidgetClass *widget_class;
  57
  58   widget_class = (GtkWidgetClass*) class;
  59
  60   widget_class->size_request = gtk_check_button_size_request;
  61   widget_class->size_allocate = gtk_check_button_size_allocate;
  62   widget_class->expose_event = gtk_check_button_expose;
  63
  64   class->draw_indicator = gtk_real_check_button_draw_indicator;
  65
  66   gtk_widget_class_install_style_property (widget_class,
  67                                            g_param_spec_int ("indicator-size",
  68                                                              P_("Indicator Size"),
  69                                                              P_("Size of check or radio indicator"),
  70                                                              0,
  71                                                              G_MAXINT,
  72                                                              INDICATOR_SIZE,
  73                                                              GTK_PARAM_READABLE));
  74   gtk_widget_class_install_style_property (widget_class,
  75                                            g_param_spec_int ("indicator-spacing",
  76                                                              P_("Indicator Spacing"),
  77                                                              P_("Spacing around check or radio indicator"),
  78                                                              0,
  79                                                              G_MAXINT,
  80                                                              INDICATOR_SPACING,
  81                                                              GTK_PARAM_READABLE));
  82 }
  83
  84 static void
  85 gtk_check_button_init (GtkCheckButton *check_button)
  86 {
  87   gtk_widget_set_has_window (GTK_WIDGET (check_button), FALSE);
  88   gtk_widget_set_receives_default (GTK_WIDGET (check_button), FALSE);
  89   GTK_TOGGLE_BUTTON (check_button)->draw_indicator = TRUE;
  90   GTK_BUTTON (check_button)->depress_on_activate = FALSE;
  91 }
  92
  93 GtkWidget*
  94 gtk_check_button_new (void)
  95 {
  96   return g_object_new (GTK_TYPE_CHECK_BUTTON, NULL);
  97 }
  98
  99
 100 GtkWidget*
 101 gtk_check_button_new_with_label (const gchar *label)
 102 {
 103   return g_object_new (GTK_TYPE_CHECK_BUTTON, "label", label, NULL);
 104 }
 105
 106 /**
 107  * gtk_check_button_new_with_mnemonic:
 108  * @label: The text of the button, with an underscore in front of the
 109  *         mnemonic character
 110  * @returns: a new #GtkCheckButton
 111  *
 112  * Creates a new #GtkCheckButton containing a label. The label
 113  * will be created using gtk_label_new_with_mnemonic(), so underscores
 114  * in @label indicate the mnemonic for the check button.
 115  **/
 116 GtkWidget*
 117 gtk_check_button_new_with_mnemonic (const gchar *label)
 118 {
 119   return g_object_new (GTK_TYPE_CHECK_BUTTON,
 120                        "label", label,
 121                        "use-underline", TRUE,
 122                        NULL);
 123 }
 124
 125
 126 /* This should only be called when toggle_button->draw_indicator
 127  * is true.
 128  */
 129 static void
 130 gtk_check_button_paint (GtkWidget    *widget,
 131                         GdkRectangle *area)
 132 {
 133   GtkCheckButton *check_button = GTK_CHECK_BUTTON (widget);
 134
 135   if (gtk_widget_is_drawable (widget))
 136     {
 137       gint border_width;
 138       gint interior_focus;
 139       gint focus_width;
 140       gint focus_pad;
 141
 142       gtk_widget_style_get (widget,
 143                             "interior-focus", &interior_focus,
 144                             "focus-line-width", &focus_width,
 145                             "focus-padding", &focus_pad,
 146                             NULL);
 147
 148       gtk_check_button_draw_indicator (check_button, area);
 149
 150       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 151       if (gtk_widget_has_focus (widget))
 152         {
 153           GtkWidget *child = GTK_BIN (widget)->child;
 154
 155           if (interior_focus && child && gtk_widget_get_visible (child))
 156             gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),
 157                              area, widget, "checkbutton",
 158                              child->allocation.x - focus_width - focus_pad,
 159                              child->allocation.y - focus_width - focus_pad,
 160                              child->allocation.width + 2 * (focus_width + focus_pad),
 161                              child->allocation.height + 2 * (focus_width + focus_pad));
 162           else
 163             gtk_paint_focus (widget->style, widget->window, gtk_widget_get_state (widget),
 164                              area, widget, "checkbutton",
 165                              border_width + widget->allocation.x,
 166                              border_width + widget->allocation.y,
 167                              widget->allocation.width - 2 * border_width,
 168                              widget->allocation.height - 2 * border_width);
 169         }
 170     }
 171 }
 172
 173 void
 174 _gtk_check_button_get_props (GtkCheckButton *check_button,
 175                              gint           *indicator_size,
 176                              gint           *indicator_spacing)
 177 {
 178   GtkWidget *widget =  GTK_WIDGET (check_button);
 179
 180   if (indicator_size)
 181     gtk_widget_style_get (widget, "indicator-size", indicator_size, NULL);
 182
 183   if (indicator_spacing)
 184     gtk_widget_style_get (widget, "indicator-spacing", indicator_spacing, NULL);
 185 }
 186
 187 static void
 188 gtk_check_button_size_request (GtkWidget      *widget,
 189                                GtkRequisition *requisition)
 190 {
 191   GtkToggleButton *toggle_button = GTK_TOGGLE_BUTTON (widget);
 192
 193   if (toggle_button->draw_indicator)
 194     {
 195       GtkWidget *child;
 196       gint temp;
 197       gint indicator_size;
 198       gint indicator_spacing;
 199       gint focus_width;
 200       gint focus_pad;
 201       guint border_width;
 202
 203       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 204
 205       gtk_widget_style_get (GTK_WIDGET (widget),
 206                             "focus-line-width", &focus_width,
 207                             "focus-padding", &focus_pad,
 208                             NULL);
 209
 210       requisition->width = border_width * 2;
 211       requisition->height = border_width * 2;
 212
 213       _gtk_check_button_get_props (GTK_CHECK_BUTTON (widget),
 214                                    &indicator_size, &indicator_spacing);
 215
 216       child = GTK_BIN (widget)->child;
 217       if (child && gtk_widget_get_visible (child))
 218         {
 219           GtkRequisition child_requisition;
 220
 221           gtk_widget_size_request (child, &child_requisition);
 222
 223           requisition->width += child_requisition.width + indicator_spacing;
 224           requisition->height += child_requisition.height;
 225         }
 226
 227       requisition->width += (indicator_size + indicator_spacing * 2 + 2 * (focus_width + focus_pad));
 228
 229       temp = indicator_size + indicator_spacing * 2;
 230       requisition->height = MAX (requisition->height, temp) + 2 * (focus_width + focus_pad);
 231     }
 232   else
 233     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_request (widget, requisition);
 234 }
 235
 236 static void
 237 gtk_check_button_size_allocate (GtkWidget     *widget,
 238                                 GtkAllocation *allocation)
 239 {
 240   GtkCheckButton *check_button;
 241   GtkToggleButton *toggle_button;
 242   GtkButton *button;
 243   GtkAllocation child_allocation;
 244
 245   button = GTK_BUTTON (widget);
 246   check_button = GTK_CHECK_BUTTON (widget);
 247   toggle_button = GTK_TOGGLE_BUTTON (widget);
 248
 249   if (toggle_button->draw_indicator)
 250     {
 251       gint indicator_size;
 252       gint indicator_spacing;
 253       gint focus_width;
 254       gint focus_pad;
 255
 256       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 257       gtk_widget_style_get (widget,
 258                             "focus-line-width", &focus_width,
 259                             "focus-padding", &focus_pad,
 260                             NULL);
 261
 262       widget->allocation = *allocation;
 263       if (gtk_widget_get_realized (widget))
 264         gdk_window_move_resize (button->event_window,
 265                                 allocation->x, allocation->y,
 266                                 allocation->width, allocation->height);
 267
 268       if (GTK_BIN (button)->child && gtk_widget_get_visible (GTK_BIN (button)->child))
 269         {
 270           GtkRequisition child_requisition;
 271           guint border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 272
 273           gtk_widget_get_child_requisition (GTK_BIN (button)->child, &child_requisition);
 274
 275           child_allocation.width = MIN (child_requisition.width,
 276                                         allocation->width -
 277                                         ((border_width + focus_width + focus_pad) * 2
 278                                          + indicator_size + indicator_spacing * 3));
 279           child_allocation.width = MAX (child_allocation.width, 1);
 280
 281           child_allocation.height = MIN (child_requisition.height,
 282                                          allocation->height - (border_width + focus_width + focus_pad) * 2);
 283           child_allocation.height = MAX (child_allocation.height, 1);
 284
 285           child_allocation.x = (border_width + indicator_size + indicator_spacing * 3 +
 286                                 widget->allocation.x + focus_width + focus_pad);
 287           child_allocation.y = widget->allocation.y +
 288                   (allocation->height - child_allocation.height) / 2;
 289
 290           if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 291             child_allocation.x = allocation->x + allocation->width
 292               - (child_allocation.x - allocation->x + child_allocation.width);
 293
 294           gtk_widget_size_allocate (GTK_BIN (button)->child, &child_allocation);
 295         }
 296     }
 297   else
 298     GTK_WIDGET_CLASS (gtk_check_button_parent_class)->size_allocate (widget, allocation);
 299 }
 300
 301 static gint
 302 gtk_check_button_expose (GtkWidget      *widget,
 303                          GdkEventExpose *event)
 304 {
 305   GtkToggleButton *toggle_button;
 306   GtkBin *bin;
 307
 308   toggle_button = GTK_TOGGLE_BUTTON (widget);
 309   bin = GTK_BIN (widget);
 310
 311   if (gtk_widget_is_drawable (widget))
 312     {
 313       if (toggle_button->draw_indicator)
 314         {
 315           gtk_check_button_paint (widget, &event->area);
 316
 317           if (bin->child)
 318             gtk_container_propagate_expose (GTK_CONTAINER (widget),
 319                                             bin->child,
 320                                             event);
 321         }
 322       else if (GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event)
 323         GTK_WIDGET_CLASS (gtk_check_button_parent_class)->expose_event (widget, event);
 324     }
 325
 326   return FALSE;
 327 }
 328
 329
 330 static void
 331 gtk_check_button_draw_indicator (GtkCheckButton *check_button,
 332                                  GdkRectangle   *area)
 333 {
 334   GtkCheckButtonClass *class;
 335
 336   g_return_if_fail (GTK_IS_CHECK_BUTTON (check_button));
 337
 338   class = GTK_CHECK_BUTTON_GET_CLASS (check_button);
 339
 340   if (class->draw_indicator)
 341     class->draw_indicator (check_button, area);
 342 }
 343
 344 static void
 345 gtk_real_check_button_draw_indicator (GtkCheckButton *check_button,
 346                                       GdkRectangle   *area)
 347 {
 348   GtkWidget *widget;
 349   GtkWidget *child;
 350   GtkButton *button;
 351   GtkToggleButton *toggle_button;
 352   GtkStateType state_type;
 353   GtkShadowType shadow_type;
 354   gint x, y;
 355   gint indicator_size;
 356   gint indicator_spacing;
 357   gint focus_width;
 358   gint focus_pad;
 359   guint border_width;
 360   gboolean interior_focus;
 361
 362   widget = GTK_WIDGET (check_button);
 363
 364   if (gtk_widget_is_drawable (widget))
 365     {
 366       button = GTK_BUTTON (check_button);
 367       toggle_button = GTK_TOGGLE_BUTTON (check_button);
 368
 369       gtk_widget_style_get (widget,
 370                             "interior-focus", &interior_focus,
 371                             "focus-line-width", &focus_width,
 372                             "focus-padding", &focus_pad,
 373                             NULL);
 374
 375       _gtk_check_button_get_props (check_button, &indicator_size, &indicator_spacing);
 376
 377       border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
 378
 379       x = widget->allocation.x + indicator_spacing + border_width;
 380       y = widget->allocation.y + (widget->allocation.height - indicator_size) / 2;
 381
 382       child = GTK_BIN (check_button)->child;
 383       if (!interior_focus || !(child && gtk_widget_get_visible (child)))
 384         x += focus_width + focus_pad;
 385
 386       if (toggle_button->inconsistent)
 387         shadow_type = GTK_SHADOW_ETCHED_IN;
 388       else if (toggle_button->active)
 389         shadow_type = GTK_SHADOW_IN;
 390       else
 391         shadow_type = GTK_SHADOW_OUT;
 392
 393       if (button->activate_timeout || (button->button_down && button->in_button))
 394         state_type = GTK_STATE_ACTIVE;
 395       else if (button->in_button)
 396         state_type = GTK_STATE_PRELIGHT;
 397       else if (!gtk_widget_is_sensitive (widget))
 398         state_type = GTK_STATE_INSENSITIVE;
 399       else
 400         state_type = GTK_STATE_NORMAL;
 401
 402       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
 403         x = widget->allocation.x + widget->allocation.width - (indicator_size + x - widget->allocation.x);
 404
 405       if (gtk_widget_get_state (widget) == GTK_STATE_PRELIGHT)
 406         {
 407           GdkRectangle restrict_area;
 408           GdkRectangle new_area;
 409
 410           restrict_area.x = widget->allocation.x + border_width;
 411           restrict_area.y = widget->allocation.y + border_width;
 412           restrict_area.width = widget->allocation.width - (2 * border_width);
 413           restrict_area.height = widget->allocation.height - (2 * border_width);
 414
 415           if (gdk_rectangle_intersect (area, &restrict_area, &new_area))
 416             {
 417               gtk_paint_flat_box (widget->style, widget->window, GTK_STATE_PRELIGHT,
 418                                   GTK_SHADOW_ETCHED_OUT,
 419                                   area, widget, "checkbutton",
 420                                   new_area.x, new_area.y,
 421                                   new_area.width, new_area.height);
 422             }
 423         }
 424
 425       gtk_paint_check (widget->style, widget->window,
 426                        state_type, shadow_type,
 427                        area, widget, "checkbutton",
 428                        x, y, indicator_size, indicator_size);
 429     }
 430 }