[gtk+/wip/matthiasc/font-variations: 114/115] font chooser: Add a script filter
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/wip/matthiasc/font-variations: 114/115] font chooser: Add a script filter
- Date: Sat, 23 Dec 2017 04:11:14 +0000 (UTC)
commit cc3b539709a2aa584454eaf8ee058f2d48bbcfd8
Author: Matthias Clasen <mclasen redhat com>
Date: Thu Dec 21 13:40:41 2017 -0500
font chooser: Add a script filter
Allow filtering the list by coverage of scripts.
Currently, this uses fontconfig directly, and is
very slow. Pango needs to gain api that lets us
access this information without recreating it.
Still to do: Figure out a good way to obtain a
representative list of scripts, without including
all the obscure and historic scripts that are
defined in Unicode.
gtk/gtkfontchooserwidget.c | 239 +++++++++++++++++++++++++++++++++++++++-
gtk/ui/gtkfontchooserwidget.ui | 36 ++++---
2 files changed, 258 insertions(+), 17 deletions(-)
---
diff --git a/gtk/gtkfontchooserwidget.c b/gtk/gtkfontchooserwidget.c
index 9ecdea0..b736b38 100644
--- a/gtk/gtkfontchooserwidget.c
+++ b/gtk/gtkfontchooserwidget.c
@@ -50,6 +50,8 @@
#include "gtkwidget.h"
#include "gtksettings.h"
#include "gtkdialog.h"
+#include "gtkcombobox.h"
+#include "gtkcelllayout.h"
#if defined(HAVE_HARFBUZZ) && defined(HAVE_PANGOFT)
#include <pango/pangofc-font.h>
@@ -88,6 +90,7 @@ struct _GtkFontChooserWidgetPrivate
{
GtkWidget *grid;
GtkWidget *search_entry;
+ GtkWidget *script_combo;
GtkWidget *family_face_list;
GtkTreeViewColumn *family_face_column;
GtkCellRenderer *family_face_cell;
@@ -115,6 +118,8 @@ struct _GtkFontChooserWidgetPrivate
gpointer filter_data;
GDestroyNotify filter_data_destroy;
+ PangoScript script;
+
guint last_fontconfig_timestamp;
GHashTable *axes;
@@ -172,6 +177,7 @@ static void gtk_font_chooser_widget_set_show_preview_entry (GtkFontChooserWi
static void gtk_font_chooser_widget_set_cell_size (GtkFontChooserWidget *fontchooser);
static void gtk_font_chooser_widget_load_fonts (GtkFontChooserWidget *fontchooser,
gboolean force);
+static void gtk_font_chooser_widget_populate_scripts (GtkFontChooserWidget *fontchooser);
static gboolean visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer user_data);
@@ -196,6 +202,8 @@ typedef struct _GtkDelayedFontDescription GtkDelayedFontDescription;
struct _GtkDelayedFontDescription {
PangoFontFace *face;
PangoFontDescription *desc;
+ PangoScript *scripts;
+ int n_scripts;
guint ref_count;
};
@@ -208,6 +216,8 @@ gtk_delayed_font_description_new (PangoFontFace *face)
result->face = g_object_ref (face);
result->desc = NULL;
+ result->scripts = NULL;
+ result->n_scripts = -1;
result->ref_count = 1;
return result;
@@ -233,6 +243,8 @@ gtk_delayed_font_description_unref (GtkDelayedFontDescription *desc)
if (desc->desc)
pango_font_description_free (desc->desc);
+ g_free (desc->scripts);
+
g_slice_free (GtkDelayedFontDescription, desc);
}
@@ -245,6 +257,76 @@ gtk_delayed_font_description_get (GtkDelayedFontDescription *desc)
return desc->desc;
}
+PangoScript *
+gtk_delayed_font_description_get_scripts (GtkDelayedFontDescription *desc,
+ GtkWidget *fontchooser,
+ int *n_scripts)
+{
+ if (desc->n_scripts < 0)
+ {
+#if defined(HAVE_HARFBUZZ) && defined(HAVE_PANGOFT)
+ PangoFontDescription *font_desc;
+ PangoFont *font;
+ FcPattern *pattern;
+ FcResult res;
+ FcLangSet *ls;
+ FcStrSet *ss;
+ FcStrList *sl;
+ char *s;
+ GHashTable *all_scripts;
+ GHashTableIter iter;
+ int n, i;
+ PangoScript one_script;
+
+ font_desc = pango_font_description_copy_static (gtk_delayed_font_description_get (desc));
+ pango_font_description_set_size (font_desc, 11 * PANGO_SCALE);
+
+ font = pango_context_load_font (gtk_widget_get_pango_context (fontchooser),
+ font_desc);
+ g_object_get (font, "pattern", &pattern, NULL);
+ res = FcPatternGetLangSet (pattern, FC_LANG, 0, (FcLangSet **)&ls);
+ g_assert (res == FcResultMatch);
+ ss = FcLangSetGetLangs (ls);
+ sl = FcStrListCreate (ss);
+ FcStrListFirst (sl);
+
+ all_scripts = g_hash_table_new (NULL, NULL);
+ while ((s = FcStrListNext (sl)))
+ {
+ int n;
+ PangoScript *scripts;
+
+ scripts = pango_language_get_scripts (pango_language_from_string (s), &n);
+
+ for (i = 0; i < n; i++)
+ g_hash_table_add (all_scripts, GINT_TO_POINTER (scripts[i]));
+ }
+
+ desc->n_scripts = g_hash_table_size (all_scripts);
+ desc->scripts = g_new (PangoScript, desc->n_scripts);
+
+ i = 0;
+ g_hash_table_iter_init (&iter, all_scripts);
+ while (g_hash_table_iter_next (&iter, (gpointer *)&one_script, NULL))
+ desc->scripts[i++] = GPOINTER_TO_INT(one_script);
+
+ g_hash_table_unref (all_scripts);
+
+ FcStrListDone (sl);
+ FcStrSetDestroy (ss);
+
+ g_object_unref (font);
+ pango_font_description_free (font_desc);
+#else
+ desc->n_scripts = 0;
+#endif
+ }
+
+ *n_scripts = desc->n_scripts;
+
+ return desc->scripts;
+}
+
#define GTK_TYPE_DELAYED_FONT_DESCRIPTION (gtk_delayed_font_description_get_type ())
GType gtk_delayed_font_description_get_type (void);
@@ -664,6 +746,7 @@ gtk_font_chooser_widget_class_init (GtkFontChooserWidgetClass *klass)
"/org/gtk/libgtk/ui/gtkfontchooserwidget.ui");
gtk_widget_class_bind_template_child_private (widget_class, GtkFontChooserWidget, search_entry);
+ gtk_widget_class_bind_template_child_private (widget_class, GtkFontChooserWidget, script_combo);
gtk_widget_class_bind_template_child_private (widget_class, GtkFontChooserWidget, family_face_list);
gtk_widget_class_bind_template_child_private (widget_class, GtkFontChooserWidget, family_face_column);
gtk_widget_class_bind_template_child_private (widget_class, GtkFontChooserWidget, family_face_cell);
@@ -774,7 +857,7 @@ gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser)
/* Setup treeview/model auxilary functions */
gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (priv->filter_model),
- visible_func, (gpointer)priv, NULL);
+ visible_func, fontchooser, NULL);
gtk_tree_view_column_set_cell_data_func (priv->family_face_column,
priv->family_face_cell,
@@ -784,6 +867,7 @@ gtk_font_chooser_widget_init (GtkFontChooserWidget *fontchooser)
/* Load data and set initial style-dependent parameters */
gtk_font_chooser_widget_load_fonts (fontchooser, TRUE);
+ gtk_font_chooser_widget_populate_scripts (fontchooser);
gtk_font_chooser_widget_set_cell_size (fontchooser);
gtk_font_chooser_widget_take_font_desc (fontchooser, NULL);
}
@@ -911,18 +995,169 @@ gtk_font_chooser_widget_load_fonts (GtkFontChooserWidget *fontchooser,
gtk_font_chooser_widget_ensure_selection (fontchooser);
}
+static gint
+compare_scripts (GtkTreeModel *model,
+ GtkTreeIter *a,
+ GtkTreeIter *b,
+ gpointer data)
+{
+ PangoScript script_a, script_b;
+ char *name_a, *name_b;
+ int res;
+
+ gtk_tree_model_get (model, a,
+ 0, &name_a,
+ 1, &script_a,
+ -1);
+ gtk_tree_model_get (model,
+ b,
+ 0, &name_b,
+ 1, &script_b,
+ -1);
+
+ if (script_a == 0)
+ res = -1;
+ else if (script_b == 0)
+ res = 1;
+ else
+ res = strcmp (name_a, name_b);
+
+ g_free (name_a);
+ g_free (name_b);
+
+ return res;
+}
+
+static void
+script_changed (GtkComboBox *combo,
+ GtkFontChooserWidget *fontchooser)
+{
+ GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
+ GtkTreeIter iter;
+ GtkTreeModel *model;
+ PangoScript script;
+
+ gtk_combo_box_get_active_iter (combo, &iter);
+ model = gtk_combo_box_get_model (combo);
+ gtk_tree_model_get (model, &iter, 1, &script, -1);
+
+ priv->script = script;
+ gtk_tree_model_filter_refilter (GTK_TREE_MODEL_FILTER (priv->filter_model));
+}
+
+static void
+gtk_font_chooser_widget_populate_scripts (GtkFontChooserWidget *fontchooser)
+{
+ GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
+#if defined(HAVE_HARFBUZZ) && defined(HAVE_PANGOFT)
+ GtkListStore *store;
+ GtkCellRenderer *renderer;
+
+ store = gtk_list_store_new (2, G_TYPE_STRING, PANGO_TYPE_SCRIPT);
+
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, _("All Scripts"),
+ 1, 0,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Arabic"),
+ 1, PANGO_SCRIPT_ARABIC,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Bengali"),
+ 1, PANGO_SCRIPT_BENGALI,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Latin"),
+ 1, PANGO_SCRIPT_LATIN,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Cyrillic"),
+ 1, PANGO_SCRIPT_CYRILLIC,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Devanagari"),
+ 1, PANGO_SCRIPT_DEVANAGARI,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Han"),
+ 1, PANGO_SCRIPT_HAN,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Hangul"),
+ 1, PANGO_SCRIPT_HANGUL,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Hebrew"),
+ 1, PANGO_SCRIPT_HEBREW,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Gujarati"),
+ 1, PANGO_SCRIPT_GUJARATI,
+ -1);
+ gtk_list_store_insert_with_values (store, NULL, -1,
+ 0, C_("Script", "Gurmukhi"),
+ 1, PANGO_SCRIPT_GURMUKHI,
+ -1);
+
+ gtk_tree_sortable_set_default_sort_func (GTK_TREE_SORTABLE (store),
+ compare_scripts,
+ NULL, NULL);
+
+ gtk_combo_box_set_model (GTK_COMBO_BOX (priv->script_combo), GTK_TREE_MODEL (store));
+ gtk_combo_box_set_active (GTK_COMBO_BOX (priv->script_combo), 0);
+
+ renderer = gtk_cell_renderer_text_new ();
+ gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (priv->script_combo),
+ renderer, FALSE);
+ gtk_cell_layout_add_attribute (GTK_CELL_LAYOUT (priv->script_combo),
+ renderer, "text", 0);
+
+ g_signal_connect (priv->script_combo, "changed",
+ G_CALLBACK (script_changed), fontchooser);
+
+ g_object_unref (store);
+#else
+ gtk_widget_hide (priv->script_combo);
+#endif
+}
+
static gboolean
visible_func (GtkTreeModel *model,
GtkTreeIter *iter,
gpointer user_data)
{
- GtkFontChooserWidgetPrivate *priv = user_data;
+ GtkFontChooserWidget *fontchooser = user_data;
+ GtkFontChooserWidgetPrivate *priv = fontchooser->priv;
gboolean result = TRUE;
const gchar *search_text;
gchar **split_terms;
gchar *font_name, *font_name_casefold;
guint i;
+ if (priv->script != 0)
+ {
+ GtkDelayedFontDescription *desc;
+ PangoScript *scripts;
+ int n, i;
+
+ gtk_tree_model_get (priv->model, iter,
+ FONT_DESC_COLUMN, &desc,
+ -1);
+
+ scripts = gtk_delayed_font_description_get_scripts (desc, GTK_WIDGET (fontchooser), &n);
+ gtk_delayed_font_description_unref (desc);
+
+ for (i = 0; i < n; i++)
+ {
+ if (scripts[i] == priv->script)
+ break;
+ }
+
+ if (i == n)
+ return FALSE;
+ }
+
if (priv->filter_func != NULL)
{
PangoFontFamily *family;
diff --git a/gtk/ui/gtkfontchooserwidget.ui b/gtk/ui/gtkfontchooserwidget.ui
index c5993ba..b5df5b1 100644
--- a/gtk/ui/gtkfontchooserwidget.ui
+++ b/gtk/ui/gtkfontchooserwidget.ui
@@ -37,24 +37,31 @@
<property name="row-spacing">6</property>
<property name="column-spacing">6</property>
<child>
- <object class="GtkSearchEntry" id="search_entry">
- <property name="visible">1</property>
- <property name="can-focus">1</property>
- <property name="hexpand">1</property>
- <property name="activates-default">1</property>
- <property name="primary-icon-name">edit-find-symbolic</property>
- <property name="primary-icon-activatable">0</property>
- <property name="secondary-icon-activatable">0</property>
- <property name="primary-icon-sensitive">0</property>
- <property name="secondary-icon-sensitive">0</property>
- <property name="placeholder-text" translatable="yes">Search font name</property>
- <signal name="search-changed" handler="text_changed_cb" swapped="no"/>
- <signal name="stop-search" handler="stop_search_cb" swapped="no"/>
+ <object class="GtkBox">
+ <property name="spacing">6</property>
+ <child>
+ <object class="GtkSearchEntry" id="search_entry">
+ <property name="visible">1</property>
+ <property name="can-focus">1</property>
+ <property name="hexpand">1</property>
+ <property name="activates-default">1</property>
+ <property name="primary-icon-name">edit-find-symbolic</property>
+ <property name="primary-icon-activatable">0</property>
+ <property name="secondary-icon-activatable">0</property>
+ <property name="primary-icon-sensitive">0</property>
+ <property name="secondary-icon-sensitive">0</property>
+ <property name="placeholder-text" translatable="yes">Search font name</property>
+ <signal name="search-changed" handler="text_changed_cb" swapped="no"/>
+ <signal name="stop-search" handler="stop_search_cb" swapped="no"/>
+ </object>
+ </child>
+ <child>
+ <object class="GtkComboBox" id="script_combo"/>
+ </child>
</object>
<packing>
<property name="left-attach">0</property>
<property name="top-attach">0</property>
- <property name="width">2</property>
</packing>
</child>
<child>
@@ -213,7 +220,6 @@
<packing>
<property name="left-attach">0</property>
<property name="top-attach">1</property>
- <property name="width">2</property>
</packing>
</child>
</object>
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