Pileus Git - ~andy/gtk/blob - gtk/gtkseparator.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
  29 #include "gtkorientable.h"
  30 #include "gtkseparator.h"
  31 #include "gtkprivate.h"
  32 #include "gtkintl.h"
  33
  34 /**
  35  * SECTION:gtkseparator
  36  * @Short_description: Base class for GtkHSeparator and GtkVSeparator
  37  * @Title: GtkSeparator
  38  *
  39  * The GtkSeparator widget is the base class for #GtkHSeparator and
  40  * #GtkVSeparator. It can be used in the same way as these, by setting
  41  * the "orientation" property suitably.
  42  */
  43
  44
  45 struct _GtkSeparatorPrivate
  46 {
  47   GtkOrientation orientation;
  48 };
  49
  50
  51 enum {
  52   PROP_0,
  53   PROP_ORIENTATION
  54 };
  55
  56 static void       gtk_separator_set_property (GObject        *object,
  57                                               guint           prop_id,
  58                                               const GValue   *value,
  59                                               GParamSpec     *pspec);
  60 static void       gtk_separator_get_property (GObject        *object,
  61                                               guint           prop_id,
  62                                               GValue         *value,
  63                                               GParamSpec     *pspec);
  64 static void       gtk_separator_get_preferred_width
  65                                              (GtkWidget      *widget,
  66                                               gint           *minimum,
  67                                               gint           *natural);
  68 static void       gtk_separator_get_preferred_height
  69                                              (GtkWidget      *widget,
  70                                               gint           *minimum,
  71                                               gint           *natural);
  72 static gboolean   gtk_separator_draw         (GtkWidget      *widget,
  73                                               cairo_t        *cr);
  74
  75
  76 G_DEFINE_TYPE_WITH_CODE (GtkSeparator, gtk_separator, GTK_TYPE_WIDGET,
  77                          G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
  78                                                 NULL))
  79
  80
  81 static void
  82 gtk_separator_class_init (GtkSeparatorClass *class)
  83 {
  84   GObjectClass *object_class = G_OBJECT_CLASS (class);
  85   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
  86
  87   object_class->set_property = gtk_separator_set_property;
  88   object_class->get_property = gtk_separator_get_property;
  89
  90   widget_class->get_preferred_width = gtk_separator_get_preferred_width;
  91   widget_class->get_preferred_height = gtk_separator_get_preferred_height;
  92
  93   widget_class->draw         = gtk_separator_draw;
  94
  95   g_object_class_override_property (object_class, PROP_ORIENTATION, "orientation");
  96
  97   g_type_class_add_private (object_class, sizeof (GtkSeparatorPrivate));
  98 }
  99
 100 static void
 101 gtk_separator_init (GtkSeparator *separator)
 102 {
 103   GtkSeparatorPrivate *private;
 104
 105   separator->priv = G_TYPE_INSTANCE_GET_PRIVATE (separator,
 106                                                  GTK_TYPE_SEPARATOR,
 107                                                  GtkSeparatorPrivate);
 108   private = separator->priv;
 109
 110   gtk_widget_set_has_window (GTK_WIDGET (separator), FALSE);
 111
 112   private->orientation = GTK_ORIENTATION_HORIZONTAL;
 113 }
 114
 115 static void
 116 gtk_separator_set_property (GObject      *object,
 117                             guint         prop_id,
 118                             const GValue *value,
 119                             GParamSpec   *pspec)
 120 {
 121   GtkSeparator *separator = GTK_SEPARATOR (object);
 122   GtkSeparatorPrivate *private = separator->priv;
 123
 124   switch (prop_id)
 125     {
 126     case PROP_ORIENTATION:
 127       private->orientation = g_value_get_enum (value);
 128       gtk_widget_queue_resize (GTK_WIDGET (object));
 129       break;
 130     default:
 131       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 132       break;
 133     }
 134 }
 135
 136 static void
 137 gtk_separator_get_property (GObject    *object,
 138                             guint       prop_id,
 139                             GValue     *value,
 140                             GParamSpec *pspec)
 141 {
 142   GtkSeparator *separator = GTK_SEPARATOR (object);
 143   GtkSeparatorPrivate *private = separator->priv;
 144
 145   switch (prop_id)
 146     {
 147     case PROP_ORIENTATION:
 148       g_value_set_enum (value, private->orientation);
 149       break;
 150     default:
 151       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 152       break;
 153     }
 154 }
 155
 156 static void
 157 gtk_separator_get_preferred_size (GtkWidget      *widget,
 158                                   GtkOrientation  orientation,
 159                                   gint           *minimum,
 160                                   gint           *natural)
 161 {
 162   GtkSeparator *separator = GTK_SEPARATOR (widget);
 163   GtkSeparatorPrivate *private = separator->priv;
 164   GtkStyle *style;
 165   gboolean wide_sep;
 166   gint     sep_width;
 167   gint     sep_height;
 168
 169   style = gtk_widget_get_style (widget);
 170   gtk_widget_style_get (widget,
 171                         "wide-separators",  &wide_sep,
 172                         "separator-width",  &sep_width,
 173                         "separator-height", &sep_height,
 174                         NULL);
 175
 176   if (orientation == private->orientation)
 177     {
 178       *minimum = *natural = 1;
 179     }
 180   else if (orientation == GTK_ORIENTATION_VERTICAL)
 181     {
 182       *minimum = *natural = wide_sep ? sep_height : style->ythickness;
 183     }
 184   else
 185     {
 186       *minimum = *natural = wide_sep ? sep_width : style->xthickness;
 187     }
 188 }
 189
 190 static void
 191 gtk_separator_get_preferred_width (GtkWidget *widget,
 192                                    gint      *minimum,
 193                                    gint      *natural)
 194 {
 195   gtk_separator_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum, natural);
 196 }
 197
 198 static void
 199 gtk_separator_get_preferred_height (GtkWidget *widget,
 200                                     gint      *minimum,
 201                                     gint      *natural)
 202 {
 203   gtk_separator_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum, natural);
 204 }
 205
 206 static gboolean
 207 gtk_separator_draw (GtkWidget    *widget,
 208                     cairo_t      *cr)
 209 {
 210   GtkSeparator *separator = GTK_SEPARATOR (widget);
 211   GtkSeparatorPrivate *private = separator->priv;
 212   GtkStateType state;
 213   GtkStyle *style;
 214   GdkWindow *window;
 215   gboolean wide_separators;
 216   gint separator_width;
 217   gint separator_height;
 218   int width, height;
 219
 220   style = gtk_widget_get_style (widget);
 221   gtk_widget_style_get (widget,
 222                         "wide-separators",  &wide_separators,
 223                         "separator-width",  &separator_width,
 224                         "separator-height", &separator_height,
 225                         NULL);
 226
 227   window = gtk_widget_get_window (widget);
 228   state = gtk_widget_get_state (widget);
 229   width = gtk_widget_get_allocated_width (widget);
 230   height = gtk_widget_get_allocated_height (widget);
 231
 232   if (private->orientation == GTK_ORIENTATION_HORIZONTAL)
 233     {
 234       if (wide_separators)
 235         gtk_paint_box (style, cr,
 236                        gtk_widget_get_state (widget), GTK_SHADOW_ETCHED_OUT,
 237                        widget, "hseparator",
 238                        0, (height - separator_height) / 2,
 239                        width, separator_height);
 240       else
 241         gtk_paint_hline (style, cr,
 242                          gtk_widget_get_state (widget),
 243                          widget, "hseparator",
 244                          0, width - 1,
 245                          (height - style->ythickness) / 2);
 246     }
 247   else
 248     {
 249       if (wide_separators)
 250         gtk_paint_box (style, cr,
 251                        gtk_widget_get_state (widget), GTK_SHADOW_ETCHED_OUT,
 252                        widget, "vseparator",
 253                        (width - separator_width) / 2, 0,
 254                        separator_width, height);
 255       else
 256         gtk_paint_vline (style, cr,
 257                          gtk_widget_get_state (widget),
 258                          widget, "vseparator",
 259                          0, height - 1,
 260                          (width - style->xthickness) / 2);
 261     }
 262
 263   return FALSE;
 264 }
 265
 266 /**
 267  * gtk_separator_new:
 268  * @orientation: the separator's orientation.
 269  *
 270  * Creates a new #GtkSeparator with the given orientation.
 271  *
 272  * Return value: a new #GtkSeparator.
 273  *
 274  * Since: 3.0
 275  **/
 276 GtkWidget *
 277 gtk_separator_new (GtkOrientation orientation)
 278 {
 279   return g_object_new (GTK_TYPE_SEPARATOR,
 280                        "orientation", orientation,
 281                        NULL);
 282 }