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gimp/app/widgets/gimpfontselection-dialog.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
*
* gimpfontselection-dialog.c
* Copyright (C) 2001 Sven Neumann <sven@gimp.org>
*
* Partially based on code from GtkFontSelection.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <pango/pangoft2.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "widgets-types.h"
#include "gimpfontselection.h"
#include "gimpfontselection-dialog.h"
#include "gimp-intl.h"
#define FONT_SIZE 18
#define FONT_LIST_HEIGHT 136
#define FONT_LIST_WIDTH 190
#define FONT_STYLE_LIST_WIDTH 170
enum
{
FAMILY_COLUMN,
FAMILY_NAME_COLUMN
};
enum
{
FACE_COLUMN,
FACE_NAME_COLUMN
};
struct _GimpFontSelectionDialog
{
GimpFontSelection *fontsel;
GtkWidget *dialog;
GtkWidget *family_list;
GtkWidget *face_list;
PangoFontFamily *family;
PangoFontFace *face;
GtkWidget *preview;
FT_Bitmap bitmap;
PangoLayout *layout;
};
static void gimp_font_selection_dialog_font_changed (GimpFontSelection *fontsel,
GimpFontSelectionDialog *dialog);
static void gimp_font_selection_dialog_ok (GtkWidget *widget,
gpointer data);
static void gimp_font_selection_dialog_apply (GtkWidget *widget,
gpointer data);
static void gimp_font_selection_dialog_preview (GimpFontSelectionDialog *dialog);
static void gimp_font_selection_dialog_select_family (GtkTreeSelection *selection,
gpointer data);
static void gimp_font_selection_dialog_select_style (GtkTreeSelection *selection,
gpointer data);
static void gimp_font_selection_dialog_show_available_fonts (GimpFontSelectionDialog *dialog);
static void gimp_font_selection_dialog_show_available_styles (GimpFontSelectionDialog *dialog);
static gboolean gimp_font_selection_dialog_preview_expose (GtkWidget *widget,
GdkEventExpose *event,
gpointer data);
static void gimp_font_selection_dialog_preview_resize (GtkWidget *widget,
GtkAllocation *allocation,
gpointer data);
static void gimp_font_selection_dialog_preview (GimpFontSelectionDialog *dialog);
/**
* gimp_font_selection_dialog_new:
* @fontsel: the GimpFontSelection that creates and owns this dialog.
*
* Creates a new #GimpFontSelectionDialog.
*
* Returns: A pointer to the new #GimpFontSelectionDialog.
**/
GimpFontSelectionDialog *
gimp_font_selection_dialog_new (GimpFontSelection *fontsel)
{
GimpFontSelectionDialog *dialog;
GtkListStore *model;
GtkTreeSelection *select;
GtkTreeViewColumn *column;
GtkWidget *scrolled_win;
GtkWidget *table;
GtkWidget *label;
GtkWidget *frame;
GClosure *closure;
g_return_val_if_fail (GIMP_IS_FONT_SELECTION (fontsel), NULL);
dialog = g_new0 (GimpFontSelectionDialog, 1);
dialog->fontsel = fontsel;
dialog->dialog =
gimp_dialog_new (_("GIMP Font Selection"), "font_selection",
gimp_standard_help_func, "dialogs/font_selection.html",
GTK_WIN_POS_MOUSE,
FALSE, TRUE, TRUE,
GTK_STOCK_APPLY, gimp_font_selection_dialog_apply,
dialog, NULL, NULL, TRUE, FALSE,
GTK_STOCK_CANCEL, gtk_widget_hide,
NULL, (gpointer) 1, NULL, FALSE, TRUE,
GTK_STOCK_OK, gimp_font_selection_dialog_ok,
dialog, NULL, NULL, TRUE, FALSE,
NULL);
gtk_container_set_border_width (GTK_CONTAINER (dialog->dialog), 1);
/* Create the font preview */
frame = gtk_frame_new (NULL);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog->dialog)->vbox), frame,
FALSE, FALSE, 0);
gtk_widget_show (frame);
dialog->preview = gtk_drawing_area_new ();
gtk_widget_set_size_request (dialog->preview, -1, 30);
gtk_container_add (GTK_CONTAINER (frame), dialog->preview);
gtk_widget_show (dialog->preview);
g_signal_connect (dialog->preview, "size_allocate",
G_CALLBACK (gimp_font_selection_dialog_preview_resize),
dialog);
g_signal_connect (dialog->preview, "expose_event",
G_CALLBACK (gimp_font_selection_dialog_preview_expose),
dialog);
/* Create the table of font & style. */
table = gtk_table_new (2, 2, FALSE);
gtk_widget_show (table);
gtk_table_set_col_spacings (GTK_TABLE (table), 4);
/* Create the lists */
model = gtk_list_store_new (2,
G_TYPE_OBJECT, /* FAMILY_COLUMN */
G_TYPE_STRING); /* FAMILY_NAME_COLUMN */
dialog->family_list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
g_object_unref (model);
column =
gtk_tree_view_column_new_with_attributes ("Family",
gtk_cell_renderer_text_new (),
"text", FAMILY_NAME_COLUMN,
NULL);
gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
gtk_tree_view_append_column (GTK_TREE_VIEW (dialog->family_list), column);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (dialog->family_list),
FALSE);
select = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->family_list));
gtk_tree_selection_set_mode (select, GTK_SELECTION_BROWSE);
scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_SHADOW_IN);
gtk_widget_set_size_request (scrolled_win,
FONT_LIST_WIDTH, FONT_LIST_HEIGHT);
gtk_container_add (GTK_CONTAINER (scrolled_win), dialog->family_list);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
gtk_widget_show (dialog->family_list);
gtk_widget_show (scrolled_win);
gtk_table_attach (GTK_TABLE (table), scrolled_win, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
model = gtk_list_store_new (2,
G_TYPE_OBJECT, /* FACE_COLUMN */
G_TYPE_STRING); /* FACE_NAME_COLUMN */
dialog->face_list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (model));
g_object_unref (model);
column =
gtk_tree_view_column_new_with_attributes ("Face",
gtk_cell_renderer_text_new (),
"text", FACE_NAME_COLUMN,
NULL);
gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_AUTOSIZE);
gtk_tree_view_append_column (GTK_TREE_VIEW (dialog->face_list), column);
gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (dialog->face_list), FALSE);
select = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->face_list));
gtk_tree_selection_set_mode (select, GTK_SELECTION_BROWSE);
scrolled_win = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_SHADOW_IN);
gtk_widget_set_size_request (scrolled_win,
FONT_STYLE_LIST_WIDTH, FONT_LIST_HEIGHT);
gtk_container_add (GTK_CONTAINER (scrolled_win), dialog->face_list);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_win),
GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
gtk_widget_show (dialog->face_list);
gtk_widget_show (scrolled_win);
gtk_table_attach (GTK_TABLE (table), scrolled_win, 1, 2, 1, 2,
GTK_EXPAND | GTK_FILL,
GTK_EXPAND | GTK_FILL, 0, 0);
label = gtk_label_new_with_mnemonic (_("_Family:"));
gtk_label_set_mnemonic_widget (GTK_LABEL (label), dialog->family_list);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_widget_show (label);
gtk_table_attach (GTK_TABLE (table), label, 0, 1, 0, 1,
GTK_FILL, 0, 0, 0);
label = gtk_label_new_with_mnemonic (_("_Style:"));
gtk_label_set_mnemonic_widget (GTK_LABEL (label), dialog->face_list);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_widget_show (label);
gtk_table_attach (GTK_TABLE (table), label, 1, 2, 0, 1,
GTK_FILL, 0, 0, 0);
gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog->dialog)->vbox), table,
FALSE, FALSE, 0);
gtk_widget_show (table);
/* Insert the fonts. */
gimp_font_selection_dialog_show_available_fonts (dialog);
select = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->family_list));
g_signal_connect (select, "changed",
G_CALLBACK (gimp_font_selection_dialog_select_family),
dialog);
gimp_font_selection_dialog_show_available_styles (dialog);
select = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->face_list));
g_signal_connect (select, "changed",
G_CALLBACK (gimp_font_selection_dialog_select_style),
dialog);
dialog->layout = pango_layout_new (fontsel->context);
pango_layout_set_text (dialog->layout,
/* This is a so-called pangram; it's supposed to
contain all characters found in the alphabet. */
_("Pack my box with five dozen liquor jugs."), -1);
gimp_font_selection_dialog_set_font_desc (dialog, fontsel->font_desc);
closure = g_cclosure_new (G_CALLBACK (gimp_font_selection_dialog_font_changed),
dialog, NULL);
g_object_watch_closure (G_OBJECT (dialog->dialog), closure);
g_signal_connect_closure (fontsel, "font_changed", closure, FALSE);
return dialog;
}
void
gimp_font_selection_dialog_destroy (GimpFontSelectionDialog *dialog)
{
g_return_if_fail (dialog != NULL);
gtk_widget_destroy (dialog->dialog);
g_free (dialog->bitmap.buffer);
g_free (dialog);
}
void
gimp_font_selection_dialog_show (GimpFontSelectionDialog *dialog)
{
g_return_if_fail (dialog != NULL);
gtk_window_present (GTK_WINDOW (dialog->dialog));
}
static void
gimp_font_selection_dialog_font_changed (GimpFontSelection *fontsel,
GimpFontSelectionDialog *dialog)
{
gimp_font_selection_dialog_set_font_desc (dialog,
gimp_font_selection_get_font_desc (fontsel));
}
static void
scroll_to_selection (GtkTreeView *tree_view)
{
GtkTreeSelection *selection = gtk_tree_view_get_selection (tree_view);
GtkTreeModel *model;
GtkTreeIter iter;
if (gtk_tree_selection_get_selected (selection, &model, &iter))
{
GtkTreePath *path = gtk_tree_model_get_path (model, &iter);
gtk_tree_view_scroll_to_cell (tree_view, path, NULL, TRUE, 0.5, 0.5);
gtk_tree_path_free (path);
}
}
static gboolean
font_description_style_equal (const PangoFontDescription *a,
const PangoFontDescription *b)
{
return (pango_font_description_get_weight (a) == pango_font_description_get_weight (b) &&
pango_font_description_get_style (a) == pango_font_description_get_style (b) &&
pango_font_description_get_stretch (a) == pango_font_description_get_stretch (b) &&
pango_font_description_get_variant (a) == pango_font_description_get_variant (b));
}
void
gimp_font_selection_dialog_set_font_desc (GimpFontSelectionDialog *dialog,
PangoFontDescription *desc)
{
GtkTreeModel *model;
GtkTreeSelection *select;
GtkTreeIter iter;
gboolean valid;
gboolean found = FALSE;
const gchar *name;
g_return_if_fail (dialog != NULL);
g_return_if_fail (desc != NULL);
name = pango_font_description_get_family (desc);
if (!name)
return;
model = gtk_tree_view_get_model (GTK_TREE_VIEW (dialog->family_list));
for (valid = gtk_tree_model_get_iter_root (model, &iter);
valid;
valid = gtk_tree_model_iter_next (model, &iter))
{
PangoFontFamily *family;
gtk_tree_model_get (model, &iter, FAMILY_COLUMN, &family, -1);
if (g_ascii_strcasecmp (pango_font_family_get_name (family), name) == 0)
{
found = TRUE;
g_object_unref (family);
break;
}
g_object_unref (family);
}
if (!found && !gtk_tree_model_get_iter_root (model, &iter))
return;
select = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->family_list));
gtk_tree_selection_select_iter (select, &iter);
gimp_font_selection_dialog_show_available_styles (dialog);
model = gtk_tree_view_get_model (GTK_TREE_VIEW (dialog->face_list));
for (valid = gtk_tree_model_get_iter_root (model, &iter);
valid;
valid = gtk_tree_model_iter_next (model, &iter))
{
PangoFontFace *face;
PangoFontDescription *tmp_desc;
gtk_tree_model_get (model, &iter, FACE_COLUMN, &face, -1);
tmp_desc = pango_font_face_describe (face);
if (font_description_style_equal (tmp_desc, desc))
{
select =
gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->face_list));
gtk_tree_selection_select_iter (select, &iter);
pango_font_description_free (tmp_desc);
g_object_unref (face);
break;
}
pango_font_description_free (tmp_desc);
g_object_unref (face);
}
scroll_to_selection (GTK_TREE_VIEW (dialog->family_list));
scroll_to_selection (GTK_TREE_VIEW (dialog->face_list));
}
static void
gimp_font_selection_dialog_ok (GtkWidget *widget,
gpointer data)
{
GimpFontSelectionDialog *dialog = (GimpFontSelectionDialog *) data;
gimp_font_selection_dialog_apply (widget, data);
gtk_widget_hide (dialog->dialog);
}
static void
gimp_font_selection_dialog_apply (GtkWidget *widget,
gpointer data)
{
PangoFontDescription *font_desc;
GimpFontSelectionDialog *dialog = (GimpFontSelectionDialog *) data;
if (dialog->face)
{
font_desc = pango_font_face_describe (dialog->face);
g_signal_handlers_block_by_func (dialog->fontsel,
G_CALLBACK (gimp_font_selection_dialog_font_changed),
dialog);
gimp_font_selection_set_font_desc (dialog->fontsel, font_desc);
g_signal_handlers_unblock_by_func (dialog->fontsel,
G_CALLBACK (gimp_font_selection_dialog_font_changed),
dialog);
pango_font_description_free (font_desc);
}
}
static void
gimp_font_selection_dialog_select_family (GtkTreeSelection *selection,
gpointer data)
{
GimpFontSelectionDialog *dialog;
GtkTreeModel *model;
GtkTreeIter iter;
dialog = (GimpFontSelectionDialog *) data;
if (gtk_tree_selection_get_selected (selection, &model, &iter))
{
PangoFontFamily *family;
gtk_tree_model_get (model, &iter, FAMILY_COLUMN, &family, -1);
if (dialog->family != family)
{
dialog->family = family;
gimp_font_selection_dialog_show_available_styles (dialog);
gimp_font_selection_dialog_preview (dialog);
}
g_object_unref (family);
}
}
static void
gimp_font_selection_dialog_select_style (GtkTreeSelection *selection,
gpointer data)
{
GimpFontSelectionDialog *dialog;
GtkTreeModel *model;
GtkTreeIter iter;
dialog = (GimpFontSelectionDialog *) data;
if (gtk_tree_selection_get_selected (selection, &model, &iter))
{
PangoFontFace *face;
gtk_tree_model_get (model, &iter, FACE_COLUMN, &face, -1);
if (dialog->face != face)
{
dialog->face = face;
gimp_font_selection_dialog_preview (dialog);
}
g_object_unref (face);
}
}
static int
cmp_families (const void *a, const void *b)
{
const gchar *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
const gchar *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
return strcmp (a_name, b_name);
}
static void
gimp_font_selection_dialog_show_available_fonts (GimpFontSelectionDialog *dialog)
{
GtkListStore *model;
PangoFontFamily **families;
PangoFontFamily *match_family = NULL;
const gchar *current_name;
gint n_families, i;
model = GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (dialog->family_list)));
pango_context_list_families (dialog->fontsel->context,
&families, &n_families);
qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
gtk_list_store_clear (model);
if (dialog->family)
current_name = pango_font_family_get_name (dialog->family);
else
current_name = "Sans";
for (i = 0; i < n_families; i++)
{
const gchar *name = pango_font_family_get_name (families[i]);
GtkTreeIter iter;
gtk_list_store_append (model, &iter);
gtk_list_store_set (model, &iter,
FAMILY_COLUMN, families[i],
FAMILY_NAME_COLUMN, name,
-1);
if (i == 0 || !g_ascii_strcasecmp (name, current_name))
match_family = families[i];
}
dialog->family = match_family;
g_free (families);
}
static gint
compare_font_descriptions (const PangoFontDescription *a,
const PangoFontDescription *b)
{
gint val;
val = strcmp (pango_font_description_get_family (a),
pango_font_description_get_family (b));
if (val != 0)
return val;
if (pango_font_description_get_weight (a) != pango_font_description_get_weight (b))
return pango_font_description_get_weight (a) - pango_font_description_get_weight (b);
if (pango_font_description_get_style (a) != pango_font_description_get_style (b))
return pango_font_description_get_style (a) - pango_font_description_get_style (b);
if (pango_font_description_get_stretch (a) != pango_font_description_get_stretch (b))
return pango_font_description_get_stretch (a) - pango_font_description_get_stretch (b);
if (pango_font_description_get_variant (a) != pango_font_description_get_variant (b))
return pango_font_description_get_variant (a) - pango_font_description_get_variant (b);
return 0;
}
static gint
faces_sort_func (const void *a, const void *b)
{
PangoFontDescription *desc_a;
PangoFontDescription *desc_b;
gint ord;
desc_a = pango_font_face_describe (*(PangoFontFace **)a);
desc_b = pango_font_face_describe (*(PangoFontFace **)b);
ord = compare_font_descriptions (desc_a, desc_b);
pango_font_description_free (desc_a);
pango_font_description_free (desc_b);
return ord;
}
static void
gimp_font_selection_dialog_show_available_styles (GimpFontSelectionDialog *dialog)
{
PangoFontFace **faces;
PangoFontDescription *old_desc;
GtkListStore *model;
GtkTreeSelection *select;
GtkTreeIter match_row;
PangoFontFace *match_face = NULL;
gint n_faces, i;
model = GTK_LIST_STORE (gtk_tree_view_get_model (GTK_TREE_VIEW (dialog->face_list)));
if (dialog->face)
old_desc = pango_font_face_describe (dialog->face);
else
old_desc= NULL;
pango_font_family_list_faces (dialog->family, &faces, &n_faces);
qsort (faces, n_faces, sizeof (PangoFontFace *), faces_sort_func);
gtk_list_store_clear (model);
if (n_faces < 0)
return;
for (i = 0; i < n_faces; i++)
{
GtkTreeIter iter;
const gchar *str = pango_font_face_get_face_name (faces[i]);
gtk_list_store_append (model, &iter);
gtk_list_store_set (model, &iter,
FACE_COLUMN, faces[i],
FACE_NAME_COLUMN, str, -1);
if (i == 0)
{
match_row = iter;
match_face = faces[i];
}
else if (old_desc)
{
PangoFontDescription *tmp_desc = pango_font_face_describe (faces[i]);
if (font_description_style_equal (tmp_desc, old_desc))
{
match_row = iter;
match_face = faces[i];
}
pango_font_description_free (tmp_desc);
}
}
if (old_desc)
pango_font_description_free (old_desc);
dialog->face = match_face;
g_free (faces);
select = gtk_tree_view_get_selection (GTK_TREE_VIEW (dialog->face_list));
gtk_tree_selection_select_iter (select, &match_row);
}
static void
gimp_font_selection_dialog_preview (GimpFontSelectionDialog *dialog)
{
PangoRectangle rect;
if (dialog->face)
{
PangoFontDescription *font_desc;
font_desc = pango_font_face_describe (dialog->face);
pango_font_description_set_size (font_desc, PANGO_SCALE * FONT_SIZE);
pango_layout_set_font_description (dialog->layout, font_desc);
pango_font_description_free (font_desc);
pango_layout_get_pixel_extents (dialog->layout, NULL, &rect);
if (rect.height + 4 > dialog->preview->allocation.height)
gtk_widget_set_size_request (dialog->preview, -1, rect.height + 4);
/* FIXME: align on baseline */
memset (dialog->bitmap.buffer, 0,
dialog->bitmap.rows * dialog->bitmap.pitch);
pango_ft2_render_layout (&dialog->bitmap, dialog->layout, 2, 2);
}
gtk_widget_queue_draw (dialog->preview);
}
static gboolean
gimp_font_selection_dialog_preview_expose (GtkWidget *widget,
GdkEventExpose *event,
gpointer data)
{
GimpFontSelectionDialog *dialog = (GimpFontSelectionDialog *) data;
GdkRectangle *area;
if (!GTK_WIDGET_DRAWABLE (widget))
return FALSE;
area = &event->area;
gdk_draw_rectangle (widget->window,
widget->style->white_gc,
TRUE, area->x, area->y, area->width, area->height);
if (dialog->face && dialog->bitmap.buffer)
{
guchar *src;
GdkGC *gc;
src = dialog->bitmap.buffer + area->y * dialog->bitmap.pitch + area->x;
gc = widget->style->fg_gc[GTK_WIDGET_STATE (widget)];
gdk_gc_set_function (gc, GDK_COPY_INVERT);
gdk_draw_gray_image (widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
area->x, area->y,
area->width, area->height,
GDK_RGB_DITHER_NORMAL,
src, dialog->bitmap.pitch);
gdk_gc_set_function (gc, GDK_COPY);
}
return FALSE;
}
static void
gimp_font_selection_dialog_preview_resize (GtkWidget *widget,
GtkAllocation *allocation,
gpointer data)
{
GimpFontSelectionDialog *dialog = (GimpFontSelectionDialog *) data;
FT_Bitmap *bitmap;
bitmap = &dialog->bitmap;
if (bitmap->buffer)
g_free (bitmap->buffer);
bitmap->rows = allocation->height;
bitmap->width = allocation->width;
bitmap->pitch = allocation->width;
if (bitmap->pitch & 3)
bitmap->pitch += 4 - (bitmap->pitch & 3);
bitmap->buffer = g_malloc (bitmap->rows * bitmap->pitch);
gimp_font_selection_dialog_preview (dialog);
}
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