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Add a max-width-chars property, which can be used to specify the width of

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2004-12-13  Matthias Clasen  <mclasen@redhat.com>

	* gtk/gtklabel.[hc]: Add a max-width-chars property, which can
	be used to specify the width of the label in characters, while
	still allowing it to fall short of this length if the text
	is shorter.  (#155944, Christian Persch)

	* gtk/gtk.symbols: Add new symbols.
This commit is contained in:
Matthias Clasen 2004-12-13 06:34:54 +00:00 committed by Matthias Clasen
parent 5191e341b4
commit 50cbd51d26
9 changed files with 149 additions and 17 deletions
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7
ChangeLog
View File

@ -1,5 +1,12 @@
2004-12-13 Matthias Clasen <mclasen@redhat.com>
* gtk/gtklabel.[hc]: Add a max-width-chars property, which can
be used to specify the width of the label in characters, while
still allowing it to fall short of this length if the text
is shorter. (#155944, Christian Persch)
* gtk/gtk.symbols: Add new symbols.
* gtk/gtkuimanager.c (update_smart_separators): Don't let the
empty menu filler affect visibility of separators. (#160500,
Christian Persch)

7
ChangeLog.pre-2-10
View File

@ -1,5 +1,12 @@
2004-12-13 Matthias Clasen <mclasen@redhat.com>
* gtk/gtklabel.[hc]: Add a max-width-chars property, which can
be used to specify the width of the label in characters, while
still allowing it to fall short of this length if the text
is shorter. (#155944, Christian Persch)
* gtk/gtk.symbols: Add new symbols.
* gtk/gtkuimanager.c (update_smart_separators): Don't let the
empty menu filler affect visibility of separators. (#160500,
Christian Persch)

7
ChangeLog.pre-2-6
View File

@ -1,5 +1,12 @@
2004-12-13 Matthias Clasen <mclasen@redhat.com>
* gtk/gtklabel.[hc]: Add a max-width-chars property, which can
be used to specify the width of the label in characters, while
still allowing it to fall short of this length if the text
is shorter. (#155944, Christian Persch)
* gtk/gtk.symbols: Add new symbols.
* gtk/gtkuimanager.c (update_smart_separators): Don't let the
empty menu filler affect visibility of separators. (#160500,
Christian Persch)

7
ChangeLog.pre-2-8
View File

@ -1,5 +1,12 @@
2004-12-13 Matthias Clasen <mclasen@redhat.com>
* gtk/gtklabel.[hc]: Add a max-width-chars property, which can
be used to specify the width of the label in characters, while
still allowing it to fall short of this length if the text
is shorter. (#155944, Christian Persch)
* gtk/gtk.symbols: Add new symbols.
* gtk/gtkuimanager.c (update_smart_separators): Don't let the
empty menu filler affect visibility of separators. (#160500,
Christian Persch)

4
docs/reference/ChangeLog
View File

@ -1,3 +1,7 @@
2004-12-13 Matthias Clasen <mclasen@redhat.com>
* gtk/gtk-sections.txt: Add new label methods.
2004-12-09 Matthias Clasen <mclasen@redhat.com>
* gtk/gtk-sections.txt: Add new list store methods.

2
docs/reference/gtk/gtk-sections.txt
View File

@ -1908,6 +1908,7 @@ gtk_label_set_pattern
gtk_label_set_justify
gtk_label_set_ellipsize
gtk_label_set_width_chars
gtk_label_set_max_width_chars
gtk_label_get
gtk_label_parse_uline
gtk_label_set_line_wrap
@ -1925,6 +1926,7 @@ gtk_label_get_attributes
gtk_label_get_justify
gtk_label_get_ellipsize
gtk_label_get_width_chars
gtk_label_get_max_width_chars
gtk_label_get_label
gtk_label_get_layout
gtk_label_get_line_wrap

2
gtk/gtk.symbols
View File

@ -1307,6 +1307,7 @@ gtk_label_get_label
gtk_label_get_layout
gtk_label_get_layout_offsets
gtk_label_get_line_wrap
gtk_label_get_max_width_chars
gtk_label_get_mnemonic_keyval
gtk_label_get_mnemonic_widget
gtk_label_get_selectable
@ -1329,6 +1330,7 @@ gtk_label_set_label
gtk_label_set_line_wrap
gtk_label_set_markup
gtk_label_set_markup_with_mnemonic
gtk_label_set_max_width_chars
gtk_label_set_mnemonic_widget
gtk_label_set_pattern
gtk_label_set_selectable

115
gtk/gtklabel.c
View File

@ -48,6 +48,7 @@
typedef struct
{
gint width_chars;
gint max_width_chars;
guint single_line_mode : 1;
guint have_transform : 1;
gdouble angle;
@ -91,7 +92,8 @@ enum {
PROP_ELLIPSIZE,
PROP_WIDTH_CHARS,
PROP_SINGLE_LINE_MODE,
PROP_ANGLE
PROP_ANGLE,
PROP_MAX_WIDTH_CHARS
};
static guint signals[LAST_SIGNAL] = { 0 };
@ -440,6 +442,8 @@ gtk_label_class_init (GtkLabelClass *class)
* The desired width of the label, in characters. If this property is set to
* -1, the width will be calculated automatically, otherwise the label will
* request either 3 characters or the property value, whichever is greater.
* If the width-chars property is set to a positive value, then the
* max-width-chars property is ignored.
*
* Since: 2.6
**/
@ -492,6 +496,26 @@ gtk_label_class_init (GtkLabelClass *class)
0.0,
G_PARAM_READWRITE));
/**
* GtkLabel:max-width-chars:
*
* The desired width maximal of the label, in characters. If this property
* is set to -1, the width will be calculated automatically, otherwise the
* label will request space for no more than the requested number of
* characters. If the width-chars property is set to a positive value,
* then the max-width-chars property is ignored.
*
* Since: 2.6
**/
g_object_class_install_property (gobject_class,
PROP_MAX_WIDTH_CHARS,
g_param_spec_int ("max_width_chars",
P_("Maximal Width In Characters"),
P_("The desired maximal width of the label, in characters"),
-1,
G_MAXINT,
-1,
G_PARAM_READWRITE));
/*
* Key bindings
*/
@ -623,6 +647,9 @@ gtk_label_set_property (GObject *object,
case PROP_ANGLE:
gtk_label_set_angle (label, g_value_get_double (value));
break;
case PROP_MAX_WIDTH_CHARS:
gtk_label_set_max_width_chars (label, g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -692,7 +719,7 @@ gtk_label_get_property (GObject *object,
g_value_set_enum (value, label->ellipsize);
break;
case PROP_WIDTH_CHARS:
g_value_set_enum (value, gtk_label_get_width_chars (label));
g_value_set_int (value, gtk_label_get_width_chars (label));
break;
case PROP_SINGLE_LINE_MODE:
g_value_set_boolean (value, gtk_label_get_single_line_mode (label));
@ -700,6 +727,9 @@ gtk_label_get_property (GObject *object,
case PROP_ANGLE:
g_value_set_double (value, gtk_label_get_angle (label));
break;
case PROP_MAX_WIDTH_CHARS:
g_value_set_int (value, gtk_label_get_max_width_chars (label));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@ -717,6 +747,7 @@ gtk_label_init (GtkLabel *label)
priv = GTK_LABEL_GET_PRIVATE (label);
priv->width_chars = -1;
priv->angle = 0.0;
priv->max_width_chars = -1;
label->label = NULL;
label->jtype = GTK_JUSTIFY_LEFT;
@ -1452,7 +1483,6 @@ gtk_label_get_justify (GtkLabel *label)
return label->jtype;
}
/**
* gtk_label_set_ellipsize:
* @label: a #GtkLabel
@ -1534,7 +1564,7 @@ gtk_label_set_width_chars (GtkLabel *label,
* Retrieves the desired width of @label, in characters. See
* gtk_label_set_width_chars().
*
* Return value: the width of a label in characters.
* Return value: the width of the label in characters.
*
* Since: 2.6
**/
@ -1546,6 +1576,53 @@ gtk_label_get_width_chars (GtkLabel *label)
return GTK_LABEL_GET_PRIVATE (label)->width_chars;
}
/**
* gtk_label_set_max_width_chars:
* @label: a #GtkLabel
* @n_chars: the new desired maximal width, in characters.
*
* Sets the desired maximal width in characters of @label to @n_chars.
*
* Since: 2.6
**/
void
gtk_label_set_max_width_chars (GtkLabel *label,
gint n_chars)
{
GtkLabelPrivate *priv;
g_return_if_fail (GTK_IS_LABEL (label));
priv = GTK_LABEL_GET_PRIVATE (label);
if (priv->max_width_chars != n_chars)
{
priv->max_width_chars = n_chars;
g_object_notify (G_OBJECT (label), "max-width-chars");
gtk_widget_queue_resize (GTK_WIDGET (label));
}
}
/**
* gtk_label_get_max_width_chars:
* @label: a #GtkLabel
*
* Retrieves the desired maximal width of @label, in characters. See
* gtk_label_set_width_chars().
*
* Return value: the maximal width of the label in characters.
*
* Since: 2.6
**/
gint
gtk_label_get_max_width_chars (GtkLabel *label)
{
g_return_val_if_fail (GTK_IS_LABEL (label), -1);
return GTK_LABEL_GET_PRIVATE (label)->max_width_chars;
}
/**
* gtk_label_set_line_wrap:
* @label: a #GtkLabel
@ -1935,28 +2012,44 @@ gtk_label_size_request (GtkWidget *widget,
else
pango_layout_get_extents (label->layout, NULL, &logical_rect);
if (label->ellipsize || priv->width_chars > 0)
if ((label->wrap || label->ellipsize ||
priv->width_chars > 0 || priv->max_width_chars > 0) &&
aux_info && aux_info->width > 0)
width += aux_info->width;
else if (label->ellipsize || priv->width_chars > 0 || priv->width_chars > 0)
{
PangoContext *context;
PangoFontMetrics *metrics;
gint char_width;
gint char_width, digit_width, char_pixels, w;
/* The minimum size for ellipsized labels is ~ 3 chars */
context = pango_layout_get_context (label->layout);
metrics = pango_context_get_metrics (context, widget->style->font_desc, NULL);
char_width = pango_font_metrics_get_approximate_char_width (metrics);
digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
char_pixels = MAX (char_width, digit_width);
pango_font_metrics_unref (metrics);
width += (PANGO_PIXELS (char_width) * MAX (priv->width_chars, 3));
if (priv->width_chars < 0)
{
PangoRectangle rect;
pango_layout_set_width (label->layout, -1);
pango_layout_get_extents (label->layout, NULL, &rect);
w = char_pixels * MAX (priv->max_width_chars, 3);
w = MIN (rect.width, w);
}
else
{
if (label->wrap && aux_info && aux_info->width > 0)
width += aux_info->width;
/* enforce minimum width for ellipsized labels at ~3 chars */
w = char_pixels * MAX (priv->width_chars, 3);
}
width += PANGO_PIXELS (w);
}
else
width += PANGO_PIXELS (logical_rect.width);
}
if (priv->single_line_mode)
{

3
gtk/gtklabel.h
View File

@ -135,6 +135,9 @@ PangoEllipsizeMode gtk_label_get_ellipsize (GtkLabel *label);
void gtk_label_set_width_chars (GtkLabel *label,
gint n_chars);
gint gtk_label_get_width_chars (GtkLabel *label);
void gtk_label_set_max_width_chars (GtkLabel *label,
gint n_chars);
gint gtk_label_get_max_width_chars (GtkLabel *label);
void gtk_label_set_pattern (GtkLabel *label,
const gchar *pattern);
void gtk_label_set_line_wrap (GtkLabel *label,