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fontchooser: Use absolute size for the preview text in the list

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With absolute sizes, Pango is way better at getting the actual sizes of
the fonts to match up. It's a bit harder to compute a proper value for
this, whcih makes the code ugly, but as long as it works better...
This commit is contained in:
Benjamin Otte 2011-09-21 20:31:06 +02:00
parent 14154dac31
commit c1958ae9f2
1 changed files with 17 additions and 1 deletions
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18
gtk/gtkfontchooserwidget.c
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@ -792,6 +792,22 @@ visible_func (GtkTreeModel *model,
return result;
}
/* in pango units */
static int
gtk_font_chooser_widget_get_preview_text_height (GtkFontChooserWidget *fontchooser)
{
GtkWidget *treeview = fontchooser->priv->family_face_list;
double dpi, font_size;
dpi = gdk_screen_get_resolution (gtk_widget_get_screen (treeview));
gtk_style_context_get (gtk_widget_get_style_context (treeview),
gtk_widget_get_state_flags (treeview),
"font-size", &font_size,
NULL);
return dpi / 72.0 * PANGO_SCALE_X_LARGE * font_size * PANGO_SCALE;
}
static void
gtk_font_chooser_widget_cell_data_func (GtkTreeViewColumn *column,
GtkCellRenderer *cell,
@ -827,7 +843,7 @@ gtk_font_chooser_widget_cell_data_func (GtkTreeViewColumn *column,
attribute->start_index = to_string_len;
pango_attr_list_insert (attrs, attribute);
attribute = pango_attr_scale_new (PANGO_SCALE_X_LARGE);
attribute = pango_attr_size_new_absolute (gtk_font_chooser_widget_get_preview_text_height (fontchooser));
attribute->start_index = to_string_len;
pango_attr_list_insert (attrs, attribute);