gnome/gcliplabel.c

   1 /*
   2  * (C) 1998 The Free Software Foundation
   3  *
   4  * Author: Miguel de Icaza (miguel@kernel.org)
   5  *
   6  * Clipped label: This label is differnt from the one on Gtk as it
   7  * does requests no space, but uses all that is given to it.
   8  *
   9  * It does not queue an resize when changing the text.
  10  * */
  11
  12 #include <string.h>
  13 #include "gcliplabel.h"
  14 #include <gtk/gtkcompat.h>
  15
  16 static void gtk_clip_label_class_init    (GtkClipLabelClass  *klass);
  17 static void gtk_clip_label_size_request  (GtkWidget          *widget,
  18                                           GtkRequisition     *requisition);
  19 static void gtk_clip_label_size_allocate (GtkWidget           *widget,
  20                                           GtkAllocation      *allocation);
  21
  22 static GtkLabelClass *parent_class = NULL;
  23
  24 guint
  25 gtk_clip_label_get_type ()
  26 {
  27         static guint label_type = 0;
  28
  29         if (!label_type)
  30         {
  31                 GtkTypeInfo clip_label_info =
  32                 {
  33                         "GtkClipLabel",
  34                         sizeof (GtkClipLabel),
  35                         sizeof (GtkClipLabelClass),
  36                         (GtkClassInitFunc) gtk_clip_label_class_init,
  37                         (GtkObjectInitFunc) NULL,
  38                         (GtkArgSetFunc) NULL,
  39                         (GtkArgGetFunc) NULL
  40                 };
  41
  42                 label_type = gtk_type_unique (gtk_label_get_type (), &clip_label_info);
  43         }
  44
  45         return label_type;
  46 }
  47
  48 static void
  49 gtk_clip_label_class_init (GtkClipLabelClass *class)
  50 {
  51         GtkWidgetClass *widget_class;
  52
  53         parent_class = gtk_type_class (gtk_label_get_type ());
  54
  55         widget_class = (GtkWidgetClass*) class;
  56         widget_class->size_request = gtk_clip_label_size_request;
  57         widget_class->size_allocate = gtk_clip_label_size_allocate;
  58 }
  59
  60 void
  61 gtk_clip_label_set (GtkLabel *label,
  62                     const char *str)
  63 {
  64         gtk_label_set_text (label, str);
  65 }
  66
  67 GtkWidget*
  68 gtk_clip_label_new (const char *str)
  69 {
  70         GtkClipLabel *label;
  71
  72         g_return_val_if_fail (str != NULL, NULL);
  73
  74         label = gtk_type_new (gtk_clip_label_get_type ());
  75
  76         gtk_label_set_text (GTK_LABEL (label), str);
  77
  78         return GTK_WIDGET (label);
  79 }
  80
  81 static void
  82 gtk_clip_label_size_request (GtkWidget      *widget,
  83                              GtkRequisition *requisition)
  84 {
  85         GtkClipLabel *label;
  86
  87         g_return_if_fail (widget != NULL);
  88         g_return_if_fail (GTK_IS_CLIP_LABEL (widget));
  89         g_return_if_fail (requisition != NULL);
  90
  91         label = GTK_CLIP_LABEL (widget);
  92
  93         ((GtkWidgetClass *)parent_class)->size_request (widget, requisition);
  94
  95         requisition->width = GTK_LABEL (label)->misc.xpad * 2;
  96 }
  97
  98 static void
  99 gtk_clip_label_size_allocate (GtkWidget     *widget,
 100                               GtkAllocation *alloc)
 101 {
 102         ((GtkWidgetClass *)parent_class)->size_allocate (widget, alloc);
 103
 104         widget->requisition.width = alloc->width;
 105 }
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