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gnome-control-center/vfs-methods/fontilus/font-view.c
Paolo Borelli 8086604fc1 follow symlinks when getting info. Fixes part of #309744. 
2005-08-04  Paolo Borelli  <pborelli@katamail.com>

	* font-view.c (add_face_info): follow symlinks when getting
	info. Fixes part of #309744.
2005-08-04 11:11:39 +00:00

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/* -*- mode: C; c-basic-offset: 4 -*-
* fontilus - a collection of font utilities for GNOME
* Copyright (C) 2002-2003 James Henstridge <james@daa.com.au>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_TYPE1_TABLES_H
#include FT_SFNT_NAMES_H
#include FT_TRUETYPE_IDS_H
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>
#include <glib/gi18n.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <libgnomevfs/gnome-vfs.h>
#include <libgnomevfs/gnome-vfs-mime-handlers.h>
#include <libgnomeui/gnome-icon-lookup.h>
FT_Error FT_New_Face_From_URI(FT_Library library,
const gchar *uri,
FT_Long face_index,
FT_Face *aface);
static const gchar lowercase_text[] = "abcdefghijklmnopqrstuvwxyz";
static const gchar uppercase_text[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
static const gchar punctuation_text[] = "0123456789.:,;(*!?')";
static inline XftFont *
get_font(Display *xdisplay, FT_Face face, gint size, FcCharSet *charset)
{
FcPattern *pattern;
XftFont *font;
int screen = DefaultScreen (xdisplay);
pattern = FcPatternBuild(NULL,
FC_FT_FACE, FcTypeFTFace, face,
FC_PIXEL_SIZE, FcTypeDouble, (double)size,
NULL);
if (charset)
FcPatternAddCharSet (pattern, "charset", charset);
FcConfigSubstitute (NULL, pattern, FcMatchPattern);
XftDefaultSubstitute (xdisplay, screen, pattern);
font = XftFontOpenPattern(xdisplay, pattern);
return font;
}
static inline void
draw_string(Display *xdisplay, XftDraw *draw, XftFont *font, XftColor *colour,
const gchar *text, gint *pos_y)
{
XGlyphInfo extents;
gint len = strlen(text);
XftTextExtentsUtf8(xdisplay, font, text, len, &extents);
XftDrawStringUtf8(draw, colour, font, 4, *pos_y + extents.y, text, len);
*pos_y += extents.height + 4;
}
static gboolean
check_font_contain_text (FT_Face face, gchar *text)
{
while (text && *text)
{
gunichar wc = g_utf8_get_char (text);
if (!FT_Get_Char_Index (face, wc))
return FALSE;
text = g_utf8_next_char (text);
}
return TRUE;
}
static GdkPixmap *
create_text_pixmap(GtkWidget *drawing_area, FT_Face face)
{
gint i, pixmap_width, pixmap_height, pos_y, textlen;
GdkPixmap *pixmap = NULL;
gchar *text;
Display *xdisplay;
Drawable xdrawable;
Visual *xvisual;
Colormap xcolormap;
XftDraw *draw;
XftColor colour;
XGlyphInfo extents;
XftFont *font;
gint *sizes = NULL, n_sizes, alpha_size;
FcCharSet *charset = NULL;
text = _("The quick brown fox jumps over the lazy dog. 0123456789");
if (! check_font_contain_text (face, text))
{
text = "The quick brown fox jumps over the lazy dog. 0123456789";
}
textlen = strlen(text);
/* create pixmap */
gtk_widget_realize(drawing_area);
/* create the XftDraw */
xdisplay = GDK_PIXMAP_XDISPLAY(drawing_area->window);
xvisual = GDK_VISUAL_XVISUAL(gdk_drawable_get_visual(drawing_area->window));
xcolormap = GDK_COLORMAP_XCOLORMAP(gdk_drawable_get_colormap(drawing_area->window));
XftColorAllocName(xdisplay, xvisual, xcolormap, "black", &colour);
/* work out what sizes to render */
if (FT_IS_SCALABLE(face)) {
n_sizes = 8;
sizes = g_new(gint, n_sizes);
sizes[0] = 8;
sizes[1] = 10;
sizes[2] = 12;
sizes[3] = 18;
sizes[4] = 24;
sizes[5] = 36;
sizes[6] = 48;
sizes[7] = 72;
alpha_size = 24;
} else {
/* use fixed sizes */
n_sizes = face->num_fixed_sizes;
sizes = g_new(gint, n_sizes);
alpha_size = 0;
for (i = 0; i < face->num_fixed_sizes; i++) {
sizes[i] = face->available_sizes[i].height;
/* work out which font size to render */
if (face->available_sizes[i].height <= 24)
alpha_size = face->available_sizes[i].height;
}
}
/* calculate size of pixmap to use (with 4 pixels padding) ... */
pixmap_width = 8;
pixmap_height = 8;
font = get_font(xdisplay, face, alpha_size, charset);
charset = FcCharSetCopy (font->charset);
XftTextExtentsUtf8(xdisplay, font,
lowercase_text, strlen(lowercase_text), &extents);
pixmap_height += extents.height + 4;
pixmap_width = MAX(pixmap_width, 8 + extents.width);
XftTextExtentsUtf8(xdisplay, font,
uppercase_text, strlen(uppercase_text), &extents);
pixmap_height += extents.height + 4;
pixmap_width = MAX(pixmap_width, 8 + extents.width);
XftTextExtentsUtf8(xdisplay, font,
punctuation_text, strlen(punctuation_text), &extents);
pixmap_height += extents.height + 4;
pixmap_width = MAX(pixmap_width, 8 + extents.width);
XftFontClose(xdisplay, font);
pixmap_height += 8;
for (i = 0; i < n_sizes; i++) {
font = get_font(xdisplay, face, sizes[i], charset);
if (!font) continue;
XftTextExtentsUtf8(xdisplay, font, text, textlen, &extents);
pixmap_height += extents.height + 4;
pixmap_width = MAX(pixmap_width, 8 + extents.width);
XftFontClose(xdisplay, font);
}
/* create pixmap */
gtk_widget_set_size_request(drawing_area, pixmap_width, pixmap_height);
pixmap = gdk_pixmap_new(drawing_area->window,
pixmap_width, pixmap_height, -1);
if (!pixmap)
goto end;
gdk_draw_rectangle(pixmap, drawing_area->style->white_gc,
TRUE, 0, 0, pixmap_width, pixmap_height);
xdrawable = GDK_DRAWABLE_XID(pixmap);
draw = XftDrawCreate(xdisplay, xdrawable, xvisual, xcolormap);
/* draw text */
pos_y = 4;
font = get_font(xdisplay, face, alpha_size, charset);
draw_string(xdisplay, draw, font, &colour, lowercase_text, &pos_y);
draw_string(xdisplay, draw, font, &colour, uppercase_text, &pos_y);
draw_string(xdisplay, draw, font, &colour, punctuation_text, &pos_y);
XftFontClose(xdisplay, font);
pos_y += 8;
for (i = 0; i < n_sizes; i++) {
font = get_font(xdisplay, face, sizes[i], charset);
if (!font) continue;
draw_string(xdisplay, draw, font, &colour, text, &pos_y);
XftFontClose(xdisplay, font);
}
end:
g_free(sizes);
FcCharSetDestroy (charset);
return pixmap;
}
static void
add_row(GtkWidget *table, gint *row_p,
const gchar *name, const gchar *value, gboolean multiline)
{
gchar *bold_name;
GtkWidget *name_w, *value_w;
bold_name = g_strconcat("<b>", name, "</b>", NULL);
name_w = gtk_label_new(bold_name);
g_free(bold_name);
gtk_misc_set_alignment(GTK_MISC(name_w), 1.0, 0.0);
gtk_label_set_use_markup(GTK_LABEL(name_w), TRUE);
if (multiline) {
GtkWidget *textview;
GtkTextBuffer *buffer;
textview = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(textview), FALSE);
gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(textview), FALSE);
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(textview), GTK_WRAP_WORD);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview));
gtk_text_buffer_set_text(buffer, value, -1);
value_w = gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(value_w),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(value_w),
GTK_SHADOW_IN);
gtk_widget_set_size_request(value_w, -1, 50);
gtk_container_add(GTK_CONTAINER(value_w), textview);
} else {
value_w = gtk_label_new(value);
gtk_misc_set_alignment(GTK_MISC(value_w), 0.0, 0.5);
gtk_label_set_selectable(GTK_LABEL(value_w), TRUE);
}
gtk_table_attach(GTK_TABLE(table), name_w, 0, 1, *row_p, *row_p + 1,
GTK_FILL, GTK_FILL, 0, 0);
gtk_table_attach(GTK_TABLE(table), value_w, 1, 2, *row_p, *row_p + 1,
GTK_FILL|GTK_EXPAND, GTK_FILL, 0, 0);
(*row_p)++;
}
static void
add_face_info(GtkWidget *table, gint *row_p, const gchar *uri, FT_Face face)
{
GnomeVFSFileInfo *file_info;
GnomeVFSResult res;
PS_FontInfoRec ps_info;
add_row(table, row_p, _("Name:"), face->family_name, FALSE);
if (face->style_name)
add_row(table, row_p, _("Style:"), face->style_name, FALSE);
file_info = gnome_vfs_file_info_new();
res = gnome_vfs_get_file_info(uri, file_info,
GNOME_VFS_FILE_INFO_GET_MIME_TYPE |
GNOME_VFS_FILE_INFO_FOLLOW_LINKS);
if (res == GNOME_VFS_OK) {
if ((file_info->valid_fields&GNOME_VFS_FILE_INFO_FIELDS_MIME_TYPE)!=0){
const gchar *type = gnome_vfs_mime_get_description(file_info->mime_type);
add_row(table, row_p, _("Type:"),
type ? type : file_info->mime_type, FALSE);
}
if ((file_info->valid_fields & GNOME_VFS_FILE_INFO_FIELDS_SIZE) != 0) {
gchar *size;
size = gnome_vfs_format_file_size_for_display(file_info->size);
add_row(table, row_p, _("Size:"), size, FALSE);
g_free(size);
}
}
gnome_vfs_file_info_unref(file_info);
if (FT_IS_SFNT(face)) {
gint i, len;
gchar *version = NULL, *copyright = NULL, *description = NULL;
len = FT_Get_Sfnt_Name_Count(face);
for (i = 0; i < len; i++) {
FT_SfntName sname;
if (FT_Get_Sfnt_Name(face, i, &sname) != 0)
continue;
/* only handle the unicode names for US langid */
if (!(sname.platform_id == TT_PLATFORM_MICROSOFT &&
sname.encoding_id == TT_MS_ID_UNICODE_CS &&
sname.language_id == TT_MS_LANGID_ENGLISH_UNITED_STATES))
continue;
switch (sname.name_id) {
case TT_NAME_ID_COPYRIGHT:
g_free(copyright);
copyright = g_convert(sname.string, sname.string_len,
"UTF-8", "UTF-16BE", NULL, NULL, NULL);
break;
case TT_NAME_ID_VERSION_STRING:
g_free(version);
version = g_convert(sname.string, sname.string_len,
"UTF-8", "UTF-16BE", NULL, NULL, NULL);
break;
case TT_NAME_ID_DESCRIPTION:
g_free(description);
description = g_convert(sname.string, sname.string_len,
"UTF-8", "UTF-16BE", NULL, NULL, NULL);
break;
default:
break;
}
}
if (version) {
add_row(table, row_p, _("Version:"), version, FALSE);
g_free(version);
}
if (copyright) {
add_row(table, row_p, _("Copyright:"), copyright, TRUE);
g_free(copyright);
}
if (description) {
add_row(table, row_p, _("Description:"), description, TRUE);
g_free(description);
}
} else if (FT_Get_PS_Font_Info(face, &ps_info) == 0) {
if (ps_info.version && g_utf8_validate(ps_info.version, -1, NULL))
add_row(table, row_p, _("Version:"), ps_info.version, FALSE);
if (ps_info.notice && g_utf8_validate(ps_info.notice, -1, NULL))
add_row(table, row_p, _("Copyright:"), ps_info.notice, TRUE);
}
}
static gboolean
expose_event(GtkWidget *widget, GdkEventExpose *event, GdkPixmap *pixmap)
{
gdk_draw_drawable(widget->window,
widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
pixmap,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
return FALSE;
}
static void
set_icon(GtkWindow *window, const gchar *uri)
{
GdkScreen *screen;
GtkIconTheme *icon_theme;
gchar *icon_name = NULL;
screen = gtk_widget_get_screen (GTK_WIDGET (window));
icon_theme = gtk_icon_theme_get_for_screen (screen);
icon_name = gnome_icon_lookup_sync(icon_theme, NULL, uri, NULL,
GNOME_ICON_LOOKUP_FLAGS_NONE, NULL);
if (!icon_name) goto end;
gtk_window_set_icon_name (window, icon_name);
end:
g_free(icon_name);
}
int
main(int argc, char **argv)
{
FT_Error error;
FT_Library library;
FT_Face face;
gchar *font_file, *title;
gint row;
GtkWidget *window, *vbox, *table, *swin, *drawing_area;
GdkPixmap *pixmap;
GdkColor white = { 0, 0xffff, 0xffff, 0xffff };
bindtextdomain(GETTEXT_PACKAGE, GNOMELOCALEDIR);
bind_textdomain_codeset(GETTEXT_PACKAGE, "UTF-8");
textdomain(GETTEXT_PACKAGE);
gtk_init(&argc, &argv);
if (argc != 2) {
g_printerr(_("usage: %s fontfile\n"), argv[0]);
return 1;
}
if (!gnome_vfs_init()) {
g_printerr("could not initialise gnome-vfs\n");
return 1;
}
if (!XftInitFtLibrary()) {
g_printerr("could not initialise freetype library\n");
return 1;
}
error = FT_Init_FreeType(&library);
if (error) {
g_printerr("could not initialise freetype\n");
return 1;
}
font_file = gnome_vfs_make_uri_from_shell_arg (argv[1]);
if (!font_file) {
g_printerr("could not parse argument into a URI\n");
return 1;
}
error = FT_New_Face_From_URI(library, font_file, 0, &face);
if (error) {
g_printerr("could not load face '%s'\n", font_file);
return 1;
}
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
title = g_strconcat(face->family_name,
face->style_name ? ", " : "",
face->style_name, NULL);
gtk_window_set_title(GTK_WINDOW(window), title);
set_icon(GTK_WINDOW(window), font_file);
g_free(title);
gtk_window_set_resizable(GTK_WINDOW(window), TRUE);
vbox = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(window), vbox);
table = gtk_table_new(1, 2, FALSE);
gtk_container_set_border_width(GTK_CONTAINER(table), 5);
gtk_box_pack_start(GTK_BOX(vbox), table, FALSE, TRUE, 0);
row = 0;
add_face_info(table, &row, font_file, face);
gtk_table_set_col_spacings(GTK_TABLE(table), 8);
gtk_table_set_row_spacings(GTK_TABLE(table), 2);
swin = gtk_scrolled_window_new(NULL, NULL);
gtk_widget_set_size_request(swin, 500, 200);
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(swin),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_box_pack_start(GTK_BOX(vbox), swin, TRUE, TRUE, 0);
drawing_area = gtk_drawing_area_new();
gtk_widget_modify_bg(drawing_area, GTK_STATE_NORMAL, &white);
gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(swin),
drawing_area);
pixmap = create_text_pixmap(drawing_area, face);
g_signal_connect(drawing_area, "expose_event",
G_CALLBACK(expose_event), pixmap);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
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