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label: Move function to a better location

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This patch does not change anything, it just moves the get_label_width
function.
This commit is contained in:
Benjamin Otte 2011-03-29 15:05:27 +02:00
parent 5e80c06d41
commit e824bb4aab
1 changed files with 113 additions and 113 deletions
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226
gtk/gtklabel.c
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@ -3083,119 +3083,6 @@ gtk_label_get_measuring_layout (GtkLabel * label,
return copy;
}
static void
get_label_width (GtkLabel *label,
PangoLayout *guess_layout,
gint *minimum,
gint *natural)
{
GtkLabelPrivate *priv;
PangoLayout *layout;
PangoRectangle rect;
gint text_width, ellipsize_chars, guess_width;
priv = label->priv;
layout = gtk_label_get_measuring_layout (label, NULL, -1);
/* Fetch the length of the complete unwrapped text */
pango_layout_get_extents (layout, NULL, &rect);
text_width = rect.width;
/* Fetch the width that was guessed */
pango_layout_get_extents (guess_layout, NULL, &rect);
guess_width = rect.width;
/* enforce minimum width for ellipsized labels at ~3 chars */
if (priv->ellipsize)
ellipsize_chars = 3;
else
ellipsize_chars = 0;
/* "width-chars" Hard-coded minimum width:
* - minimum size should be MAX (width-chars, strlen ("..."));
* - natural size should be MAX (width-chars, strlen (priv->text));
*
* "max-width-chars" User specified maximum size requisition
* - minimum size should be MAX (width-chars, 0)
* - natural size should be MIN (max-width-chars, strlen (priv->text))
*
* For ellipsizing labels; if max-width-chars is specified: either it is used as
* a minimum size or the label text as a minimum size (natural size still overflows).
*
* For wrapping labels; A reasonable minimum size is useful to naturally layout
* interfaces automatically. In this case if no "width-chars" is specified, the minimum
* width will default to the wrap guess that gtk_label_ensure_layout() does.
*
* In *any* case the minimum width is completely overridden if an explicit width
* request was provided.
*/
if (priv->ellipsize || priv->wrap)
{
PangoContext *context;
PangoFontMetrics *metrics;
gint char_width, digit_width, char_pixels;
context = pango_layout_get_context (layout);
metrics = get_font_metrics (context, GTK_WIDGET (label));
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);
*minimum = char_pixels * MAX (priv->width_chars, ellipsize_chars);
/* Default to the minimum width regularly guessed by GTK+ if no minimum
* width was specified, only allow unwrapping of these labels.
*
* Note that when specifying a small width_chars for a long text;
* an accordingly large size will be required for the label height.
*/
if (priv->wrap && priv->width_chars <= 0)
*minimum = guess_width;
if (priv->max_width_chars < 0)
{
*natural = MAX (*minimum, text_width);
}
else
{
gint max_char_width = char_pixels * priv->max_width_chars;
gint max_width = MIN (text_width, max_char_width);
/* With max-char-width specified, we let the minimum widths of
* ellipsized text crawl up to the max-char-width
* (note that we dont want to limit the minimum width for wrapping text).
*/
if (priv->ellipsize)
*minimum = MIN (text_width, max_width);
*natural = MAX (*minimum, max_width);
}
}
else
{
*minimum = text_width;
*natural = *minimum;
}
/* if a width-request is set, use that as the requested label width */
if (priv->wrap || priv->ellipsize || priv->width_chars > 0 || priv->max_width_chars > 0)
{
GtkWidgetAuxInfo *aux_info;
aux_info = _gtk_widget_get_aux_info (GTK_WIDGET (label), FALSE);
if (aux_info && aux_info->width > 0)
{
*minimum = aux_info->width * PANGO_SCALE;
*natural = MAX (*natural, *minimum);
}
}
g_object_unref (layout);
}
static void
gtk_label_invalidate_wrap_width (GtkLabel *label)
{
@ -3509,6 +3396,119 @@ get_size_for_allocation (GtkLabel *label,
g_object_unref (layout);
}
static void
get_label_width (GtkLabel *label,
PangoLayout *guess_layout,
gint *minimum,
gint *natural)
{
GtkLabelPrivate *priv;
PangoLayout *layout;
PangoRectangle rect;
gint text_width, ellipsize_chars, guess_width;
priv = label->priv;
layout = gtk_label_get_measuring_layout (label, NULL, -1);
/* Fetch the length of the complete unwrapped text */
pango_layout_get_extents (layout, NULL, &rect);
text_width = rect.width;
/* Fetch the width that was guessed */
pango_layout_get_extents (guess_layout, NULL, &rect);
guess_width = rect.width;
/* enforce minimum width for ellipsized labels at ~3 chars */
if (priv->ellipsize)
ellipsize_chars = 3;
else
ellipsize_chars = 0;
/* "width-chars" Hard-coded minimum width:
* - minimum size should be MAX (width-chars, strlen ("..."));
* - natural size should be MAX (width-chars, strlen (priv->text));
*
* "max-width-chars" User specified maximum size requisition
* - minimum size should be MAX (width-chars, 0)
* - natural size should be MIN (max-width-chars, strlen (priv->text))
*
* For ellipsizing labels; if max-width-chars is specified: either it is used as
* a minimum size or the label text as a minimum size (natural size still overflows).
*
* For wrapping labels; A reasonable minimum size is useful to naturally layout
* interfaces automatically. In this case if no "width-chars" is specified, the minimum
* width will default to the wrap guess that gtk_label_ensure_layout() does.
*
* In *any* case the minimum width is completely overridden if an explicit width
* request was provided.
*/
if (priv->ellipsize || priv->wrap)
{
PangoContext *context;
PangoFontMetrics *metrics;
gint char_width, digit_width, char_pixels;
context = pango_layout_get_context (layout);
metrics = get_font_metrics (context, GTK_WIDGET (label));
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);
*minimum = char_pixels * MAX (priv->width_chars, ellipsize_chars);
/* Default to the minimum width regularly guessed by GTK+ if no minimum
* width was specified, only allow unwrapping of these labels.
*
* Note that when specifying a small width_chars for a long text;
* an accordingly large size will be required for the label height.
*/
if (priv->wrap && priv->width_chars <= 0)
*minimum = guess_width;
if (priv->max_width_chars < 0)
{
*natural = MAX (*minimum, text_width);
}
else
{
gint max_char_width = char_pixels * priv->max_width_chars;
gint max_width = MIN (text_width, max_char_width);
/* With max-char-width specified, we let the minimum widths of
* ellipsized text crawl up to the max-char-width
* (note that we dont want to limit the minimum width for wrapping text).
*/
if (priv->ellipsize)
*minimum = MIN (text_width, max_width);
*natural = MAX (*minimum, max_width);
}
}
else
{
*minimum = text_width;
*natural = *minimum;
}
/* if a width-request is set, use that as the requested label width */
if (priv->wrap || priv->ellipsize || priv->width_chars > 0 || priv->max_width_chars > 0)
{
GtkWidgetAuxInfo *aux_info;
aux_info = _gtk_widget_get_aux_info (GTK_WIDGET (label), FALSE);
if (aux_info && aux_info->width > 0)
{
*minimum = aux_info->width * PANGO_SCALE;
*natural = MAX (*natural, *minimum);
}
}
g_object_unref (layout);
}
static void
gtk_label_get_preferred_size (GtkWidget *widget,
GtkOrientation orientation,