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Add filtering to the font chooser

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This commit is contained in:
Matthias Clasen
2011-08-14 22:20:00 -04:00
parent ba564088c3
commit a09ee203ec
2 changed files with 129 additions and 81 deletions
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190
gtk/gtkfontchooser.c
View File

@ -82,7 +82,7 @@ struct _GtkFontChooserPrivate
GtkWidget *empty_list; GtkWidget *empty_list;
GtkWidget *list_notebook; GtkWidget *list_notebook;
GtkListStore *model; GtkListStore *model;
GtkTreeModel *filter; GtkTreeModel *filter_model;
GtkWidget *preview; GtkWidget *preview;
gchar *preview_text; gchar *preview_text;
@ -96,6 +96,10 @@ struct _GtkFontChooserPrivate
PangoFontFamily *family; PangoFontFamily *family;
gulong cursor_changed_handler; gulong cursor_changed_handler;
GtkFontFilterFunc filter_func;
gpointer filter_data;
GDestroyNotify filter_data_destroy;
}; };
#define DEFAULT_FONT_NAME "Sans 10" #define DEFAULT_FONT_NAME "Sans 10"
@ -149,12 +153,7 @@ static void gtk_font_chooser_dispose (GObject *object);
static void gtk_font_chooser_screen_changed (GtkWidget *widget, static void gtk_font_chooser_screen_changed (GtkWidget *widget,
GdkScreen *previous_screen); GdkScreen *previous_screen);
static void gtk_font_chooser_style_updated (GtkWidget *widget); static void gtk_font_chooser_style_updated (GtkWidget *widget);
static void gtk_font_chooser_set_family (GtkFontChooser *fontchooser,
PangoFontFamily *family);
static void gtk_font_chooser_set_face (GtkFontChooser *fontchooser,
PangoFontFace *face);
static void gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser); static void gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser);
@ -292,7 +291,7 @@ text_changed_cb (GtkEntry *entry,
} }
} }
gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter)); gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter_model));
} }
static void static void
@ -397,6 +396,9 @@ static void
cursor_changed_cb (GtkTreeView *treeview, cursor_changed_cb (GtkTreeView *treeview,
gpointer user_data) gpointer user_data)
{ {
GtkFontChooser *fontchooser = (GtkFontChooser*)user_data;
GtkFontChooserPrivate *priv = fontchooser->priv;
PangoFontFamily *family; PangoFontFamily *family;
PangoFontFace *face; PangoFontFace *face;
PangoFontDescription *desc; PangoFontDescription *desc;
@ -407,21 +409,19 @@ cursor_changed_cb (GtkTreeView *treeview,
GtkTreeIter iter; GtkTreeIter iter;
GtkTreePath *path = gtk_tree_path_new (); GtkTreePath *path = gtk_tree_path_new ();
GtkFontChooser *fontchooser = (GtkFontChooser*)user_data;
gtk_tree_view_get_cursor (treeview, &path, NULL); gtk_tree_view_get_cursor (treeview, &path, NULL);
if (!path) if (!path)
return; return;
if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (fontchooser->priv->filter), &iter, path)) if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->filter_model), &iter, path))
{ {
gtk_tree_path_free (path); gtk_tree_path_free (path);
return; return;
} }
gtk_tree_model_get (GTK_TREE_MODEL (fontchooser->priv->filter), &iter, gtk_tree_model_get (GTK_TREE_MODEL (priv->filter_model), &iter,
FACE_COLUMN, &face, FACE_COLUMN, &face,
FAMILY_COLUMN, &family, FAMILY_COLUMN, &family,
-1); -1);
@ -442,21 +442,24 @@ cursor_changed_cb (GtkTreeView *treeview,
} }
desc = pango_font_face_describe (face); desc = pango_font_face_describe (face);
pango_font_description_set_size (desc, fontchooser->priv->size); pango_font_description_set_size (desc, priv->size);
gtk_widget_override_font (fontchooser->priv->preview, desc); gtk_widget_override_font (priv->preview, desc);
pango_font_face_list_sizes (face, &sizes, &n_sizes); pango_font_face_list_sizes (face, &sizes, &n_sizes);
/* It seems not many fonts actually have a sane set of sizes */ /* It seems not many fonts actually have a sane set of sizes */
for (i = 0; i < n_sizes; i++) for (i = 0; i < n_sizes; i++)
sizes[i] = sizes[i] / PANGO_SCALE; sizes[i] = sizes[i] / PANGO_SCALE;
set_range_marks (fontchooser->priv, fontchooser->priv->size_slider, sizes, n_sizes); set_range_marks (priv, priv->size_slider, sizes, n_sizes);
gtk_font_chooser_set_family (fontchooser, family); if (priv->family)
gtk_font_chooser_set_face (fontchooser, face); g_object_unref (priv->family);
priv->family = family;
if (priv->face)
g_object_unref (priv->face);
priv->face = face;
g_object_unref (family);
g_object_unref (face);
pango_font_description_free (desc); pango_font_description_free (desc);
g_object_notify (G_OBJECT (fontchooser), "font-name"); g_object_notify (G_OBJECT (fontchooser), "font-name");
@ -646,9 +649,9 @@ gtk_font_chooser_init (GtkFontChooser *fontchooser)
set_range_marks (priv, priv->size_slider, (gint*)font_sizes, G_N_ELEMENTS (font_sizes)); set_range_marks (priv, priv->size_slider, (gint*)font_sizes, G_N_ELEMENTS (font_sizes));
/* Font list empty hides the scrolledwindow */ /* Font list empty hides the scrolledwindow */
g_signal_connect (G_OBJECT (priv->filter), "row-deleted", g_signal_connect (G_OBJECT (priv->filter_model), "row-deleted",
G_CALLBACK (row_deleted_cb), fontchooser); G_CALLBACK (row_deleted_cb), fontchooser);
g_signal_connect (G_OBJECT (priv->filter), "row-inserted", g_signal_connect (G_OBJECT (priv->filter_model), "row-inserted",
G_CALLBACK (row_inserted_cb), fontchooser); G_CALLBACK (row_inserted_cb), fontchooser);
/* Set default focus */ /* Set default focus */
@ -689,9 +692,11 @@ populate_list (GtkFontChooser *fontchooser,
GtkTreeView *treeview, GtkTreeView *treeview,
GtkListStore *model) GtkListStore *model)
{ {
GtkFontChooserPrivate *priv = fontchooser->priv;
GtkStyleContext *style_context; GtkStyleContext *style_context;
PangoFontDescription *default_font; PangoFontDescription *default_font;
gboolean selected;
GtkTreeIter match_row; GtkTreeIter match_row;
GtkTreePath *path; GtkTreePath *path;
@ -718,8 +723,10 @@ populate_list (GtkFontChooser *fontchooser,
style_context = gtk_widget_get_style_context (GTK_WIDGET (treeview)); style_context = gtk_widget_get_style_context (GTK_WIDGET (treeview));
/* Get theme font */ /* Get theme font */
default_font = (PangoFontDescription*) gtk_style_context_get_font (style_context, default_font = (PangoFontDescription*) gtk_style_context_get_font (style_context,
GTK_STATE_NORMAL); GTK_STATE_NORMAL);
selected = FALSE;
/* Iterate over families and faces */ /* Iterate over families and faces */
for (i = 0; i < n_families; i++) for (i = 0; i < n_families; i++)
@ -734,13 +741,19 @@ populate_list (GtkFontChooser *fontchooser,
for (j = 0; j < n_faces; j++) for (j = 0; j < n_faces; j++)
{ {
PangoFontDescription *pango_desc = pango_font_face_describe (faces[j]); PangoFontDescription *pango_desc;
const gchar *face_name = pango_font_face_get_face_name (faces[j]); const gchar *face_name;
gchar *font_desc = pango_font_description_to_string (pango_desc); gchar *font_desc;
if (priv->filter_func != NULL &&
!priv->filter_func (families[i], faces[j], priv->filter_data))
continue;
pango_desc = pango_font_face_describe (faces[j]);
face_name = pango_font_face_get_face_name (faces[j]);
font_desc = pango_font_description_to_string (pango_desc);
/* foreground_color, family_name, face_name, desc, sample string */
g_string_printf (family_and_face, "%s %s", fam_name, face_name); g_string_printf (family_and_face, "%s %s", fam_name, face_name);
g_string_printf (tmp, ROW_FORMAT_STRING, g_string_printf (tmp, ROW_FORMAT_STRING,
family_and_face->str, family_and_face->str,
font_desc, font_desc,
@ -755,11 +768,14 @@ populate_list (GtkFontChooser *fontchooser,
-1); -1);
/* Select the first font or the default font/face from the style context */ /* Select the first font or the default font/face from the style context */
if ((i == 0 && j == 0) || if (!selected ||
(!strcmp (fam_name, pango_font_description_get_family (default_font)) && j == 0)) (!strcmp (fam_name, pango_font_description_get_family (default_font)) && j == 0))
match_row = iter; {
match_row = iter;
selected = TRUE;
}
pango_font_description_free(pango_desc); pango_font_description_free (pango_desc);
g_free (font_desc); g_free (font_desc);
} }
@ -834,27 +850,25 @@ visible_func (GtkTreeModel *model,
static void static void
gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser) gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser)
{ {
GtkTreeView *treeview = GTK_TREE_VIEW (fontchooser->priv->family_face_list); GtkFontChooserPrivate *priv = fontchooser->priv;
GtkTreeView *treeview = GTK_TREE_VIEW (priv->family_face_list);
GtkCellRenderer *cell; GtkCellRenderer *cell;
GtkTreeViewColumn *col; GtkTreeViewColumn *col;
fontchooser->priv->model = gtk_list_store_new (4, priv->model = gtk_list_store_new (4,
PANGO_TYPE_FONT_FAMILY, PANGO_TYPE_FONT_FAMILY,
PANGO_TYPE_FONT_FACE, PANGO_TYPE_FONT_FACE,
G_TYPE_STRING, G_TYPE_STRING,
G_TYPE_STRING); G_TYPE_STRING);
fontchooser->priv->filter = gtk_tree_model_filter_new (GTK_TREE_MODEL (fontchooser->priv->model), priv->filter_model = gtk_tree_model_filter_new (GTK_TREE_MODEL (priv->model), NULL);
NULL); g_object_unref (priv->model);
g_object_unref (fontchooser->priv->model);
gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (fontchooser->priv->filter), gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (priv->filter_model),
visible_func, visible_func, (gpointer)priv, NULL);
(gpointer)fontchooser->priv,
NULL);
gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (fontchooser->priv->filter)); gtk_tree_view_set_model (treeview, GTK_TREE_MODEL (priv->filter_model));
g_object_unref (fontchooser->priv->filter); g_object_unref (priv->filter_model);
gtk_tree_view_set_rules_hint (treeview, TRUE); gtk_tree_view_set_rules_hint (treeview, TRUE);
gtk_tree_view_set_headers_visible (treeview, FALSE); gtk_tree_view_set_headers_visible (treeview, FALSE);
@ -869,7 +883,7 @@ gtk_font_chooser_bootstrap_fontlist (GtkFontChooser *fontchooser)
gtk_tree_view_append_column (treeview, col); gtk_tree_view_append_column (treeview, col);
populate_list (fontchooser, treeview, fontchooser->priv->model); populate_list (fontchooser, treeview, priv->model);
} }
static void static void
@ -892,9 +906,16 @@ static void
gtk_font_chooser_finalize (GObject *object) gtk_font_chooser_finalize (GObject *object)
{ {
GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (object); GtkFontChooser *fontchooser = GTK_FONT_CHOOSER (object);
GtkFontChooserPrivate *priv = fontchooser->priv;
gtk_font_chooser_set_family (fontchooser, NULL); if (priv->family)
gtk_font_chooser_set_face (fontchooser, NULL); g_object_unref (priv->family);
if (priv->face)
g_object_unref (priv->face);
if (priv->filter_data_destroy)
priv->filter_data_destroy (priv->filter_data);
G_OBJECT_CLASS (gtk_font_chooser_parent_class)->finalize (object); G_OBJECT_CLASS (gtk_font_chooser_parent_class)->finalize (object);
} }
@ -922,32 +943,6 @@ gtk_font_chooser_style_updated (GtkWidget *widget)
fontchooser->priv->model); fontchooser->priv->model);
} }
static void
gtk_font_chooser_set_family (GtkFontChooser *fontchooser,
PangoFontFamily *family)
{
GtkFontChooserPrivate *priv = fontchooser->priv;
if (family)
family = g_object_ref (family);
if (priv->family)
g_object_unref (priv->family);
priv->family = family;
}
static void
gtk_font_chooser_set_face (GtkFontChooser *fontchooser,
PangoFontFace *face)
{
GtkFontChooserPrivate *priv = fontchooser->priv;
if (face)
face = g_object_ref (face);
if (priv->face)
g_object_unref (priv->face);
priv->face = face;
}
/** /**
* gtk_font_chooser_get_family: * gtk_font_chooser_get_family:
* @fontchooser: a #GtkFontChooser * @fontchooser: a #GtkFontChooser
@ -1097,15 +1092,15 @@ gtk_font_chooser_set_font_name (GtkFontChooser *fontchooser,
gtk_entry_set_text (GTK_ENTRY (priv->search_entry), ""); gtk_entry_set_text (GTK_ENTRY (priv->search_entry), "");
/* We find the matching family/face */ /* We find the matching family/face */
for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->filter), &iter); for (valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (priv->filter_model), &iter);
valid; valid;
valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->filter), &iter)) valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->filter_model), &iter))
{ {
PangoFontFace *face; PangoFontFace *face;
PangoFontDescription *tmp_desc; PangoFontDescription *tmp_desc;
gtk_tree_model_get (GTK_TREE_MODEL (priv->filter), &iter, gtk_tree_model_get (GTK_TREE_MODEL (priv->filter_model), &iter,
FACE_COLUMN, &face, FACE_COLUMN, &face,
-1); -1);
tmp_desc = pango_font_face_describe (face); tmp_desc = pango_font_face_describe (face);
@ -1129,8 +1124,7 @@ gtk_font_chooser_set_font_name (GtkFontChooser *fontchooser,
size / PANGO_SCALE); size / PANGO_SCALE);
} }
path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter), path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->filter_model), &iter);
&iter);
if (path) if (path)
{ {
@ -1261,3 +1255,37 @@ gtk_font_chooser_set_show_preview_entry (GtkFontChooser *fontchooser,
g_object_notify (G_OBJECT (fontchooser), "show-preview-entry"); g_object_notify (G_OBJECT (fontchooser), "show-preview-entry");
} }
} }
/**
* gtk_font_chooser_set_filter_func:
* @fontchooser: a #GtkFontChooser
* @filter: (allow-none): a #GtkFontFilterFunc, or %NULL
* @data: data to pass to @filter
* @destroy: function to call to free @data when it is no longer needed
*
* Adds a filter function that decides which fonts to display
* in the font chooser.
*
* Since: 3.2
*/
void
gtk_font_chooser_set_filter_func (GtkFontChooser *fontchooser,
GtkFontFilterFunc filter,
gpointer data,
GDestroyNotify destroy)
{
GtkFontChooserPrivate *priv = fontchooser->priv;
g_return_if_fail (GTK_IS_FONT_CHOOSER (fontchooser));
if (priv->filter_data_destroy)
priv->filter_data_destroy (priv->filter_data);
priv->filter_func = filter;
priv->filter_data = data;
priv->filter_data_destroy = destroy;
populate_list (fontchooser,
GTK_TREE_VIEW (priv->family_face_list),
priv->model);
}

20
gtk/gtkfontchooser.h
View File

@ -81,6 +81,26 @@ gboolean gtk_font_chooser_get_show_preview_entry (GtkFontChooser *fontchoo
void gtk_font_chooser_set_show_preview_entry (GtkFontChooser *fontchooser, void gtk_font_chooser_set_show_preview_entry (GtkFontChooser *fontchooser,
gboolean show_preview_entry); gboolean show_preview_entry);
/**
* GtkFontFilterFunc:
* @family: a #PangoFontFamily
* @face: a #PangoFontFace belonging to @family
* @data (closure): user data passed to gtk_font_chooser_set_filter_func()
*
* The type of function that is used for deciding what fonts get
* shown in a #GtkFontChooser. See gtk_font_chooser_set_filter_func().
*
* Returns: %TRUE if the font should be displayed
*/
typedef gboolean (*GtkFontFilterFunc) (const PangoFontFamily *family,
const PangoFontFace *face,
gpointer data);
void gtk_font_chooser_set_filter_func (GtkFontChooser *fontchooser,
GtkFontFilterFunc filter,
gpointer data,
GDestroyNotify destroy);
G_END_DECLS G_END_DECLS
#endif /* __GTK_FONT_CHOOSER_H__ */ #endif /* __GTK_FONT_CHOOSER_H__ */