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gtk/gtkfontsel.c
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3221
gtk/gtkfontsel.c
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gtk/gtkfontsel.h
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gtk/gtkfontsel.h
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/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* GtkFontSelection widget for Gtk+, by Damon Chaplin, May 1998.
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* Based on the GnomeFontSelector widget, by Elliot Lee, but major changes.
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* The GnomeFontSelector was derived from app/text_tool.c in the GIMP.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GTK_FONTSEL_H__
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#define __GTK_FONTSEL_H__
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#include <gdk/gdk.h>
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#include <gtk/gtkwindow.h>
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#include <gtk/gtknotebook.h>
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#ifdef __cplusplus
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extern "C" {
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#pragma }
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#endif /* __cplusplus */
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#define GTK_FONT_SELECTION(obj) GTK_CHECK_CAST(obj, gtk_font_selection_get_type(), GtkFontSelection)
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#define GTK_FONT_SELECTION_CLASS(klass) GTK_CHECK_CLASS_CAST(klass, gtk_font_selection_get_type(), GtkFontSelectionClass)
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#define GTK_IS_FONT_SELECTION(obj) GTK_CHECK_TYPE(obj, gtk_font_selection_get_type())
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#define GTK_FONT_SELECTION_DIALOG(obj) GTK_CHECK_CAST (obj, gtk_font_selection_dialog_get_type (), GtkFontSelectionDialog)
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#define GTK_FONT_SELECTION_DIALOG_CLASS(klass) GTK_CHECK_CLASS_CAST (klass, gtk_font_selection_dialog_get_type (), GtkFontSelectionDialogClass)
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#define GTK_IS_FONT_SELECTION_DIALOG(obj) GTK_CHECK_TYPE (obj, gtk_font_selection_dialog_get_type ())
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typedef struct _GtkFontSelection GtkFontSelection;
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typedef struct _GtkFontSelectionClass GtkFontSelectionClass;
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typedef struct _GtkFontSelectionDialog GtkFontSelectionDialog;
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typedef struct _GtkFontSelectionDialogClass GtkFontSelectionDialogClass;
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typedef struct _FontInfo FontInfo;
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typedef struct _FontStyle FontStyle;
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/* This struct represents one family of fonts (with one foundry), e.g. adobe
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courier or sony fixed. It stores the family name, the index of the foundry
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name, and the index of and number of available styles. */
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struct _FontInfo
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{
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gchar *family;
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guint16 foundry;
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gint style_index;
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guint16 nstyles;
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};
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/* This is the number of properties which we keep in the properties array,
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i.e. Foundry, Weight, Slant, Set Width & Spacing. */
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#define GTK_NUM_FONT_PROPERTIES 6
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/* This is the number of properties each style has i.e. Weight, Slant,
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Set Width & Spacing. Note that Foundry is not included. */
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#define GTK_NUM_STYLE_PROPERTIES 5
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/* Used for the flags field in FontStyle. Note that they can be combined,
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e.g. a style can have multiple bitmaps and a true scalable version.
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The displayed flag is used when displaying styles to remember which
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styles have already been displayed. */
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enum
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{
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BITMAP_FONT = 1 << 0,
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SCALABLE_FONT = 1 << 1,
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SCALABLE_BITMAP_FONT = 1 << 2,
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DISPLAYED = 1 << 3
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};
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/* This represents one style, as displayed in the Font Style clist. It can
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have a number of available pixel sizes and point sizes. The indexes point
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into the two big klass->pixel_sizes & klass->point_sizes arrays. */
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struct _FontStyle
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{
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guint16 properties[GTK_NUM_STYLE_PROPERTIES];
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gint pixel_sizes_index;
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guint16 npixel_sizes;
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gint point_sizes_index;
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guint16 npoint_sizes;
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guint8 flags;
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};
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/* Used to determine whether we are using point or pixel sizes. */
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typedef enum
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{
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PIXELS_METRIC,
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POINTS_METRIC
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} GtkFontMetricType;
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struct _GtkFontSelection
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{
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GtkNotebook notebook;
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/* These are on the font page. */
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GtkWidget *main_vbox;
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GtkWidget *font_label;
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GtkWidget *font_entry;
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GtkWidget *font_clist;
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GtkWidget *font_style_entry;
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GtkWidget *font_style_clist;
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GtkWidget *size_entry;
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GtkWidget *size_clist;
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GtkWidget *pixels_button;
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GtkWidget *points_button;
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GtkWidget *filter_button;
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GtkWidget *scaled_bitmaps_button;
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GtkWidget *preview_entry;
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GtkWidget *message_label;
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/* These are on the font info page. */
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GtkWidget *info_vbox;
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GtkWidget *info_clist;
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GtkWidget *requested_font_name;
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GtkWidget *actual_font_name;
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/* These are on the filter page. */
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GtkWidget *filter_vbox;
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GtkWidget *filter_clists[GTK_NUM_FONT_PROPERTIES];
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GdkFont *font;
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gint font_index;
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gint style;
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GtkFontMetricType metric;
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/* The size is either in pixels or deci-points, depending on the metric. */
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gint size;
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/* This is the last size explicitly selected. When the user selects different
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fonts we try to find the nearest size to this. */
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gint selected_size;
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/* This flag determines if scaled bitmapped fonts are acceptable. */
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gboolean scale_bitmapped_fonts;
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/* These are the current property settings. They are indexes into the
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strings in the class' properties array. */
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guint16 property_values[GTK_NUM_STYLE_PROPERTIES];
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/* These hold the arrays of current filter settings for each property.
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If nfilters is 0 then all values of the property are OK. If not the
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filters array contains the indexes of the valid property values. */
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guint16 *property_filters[GTK_NUM_FONT_PROPERTIES];
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guint16 property_nfilters[GTK_NUM_FONT_PROPERTIES];
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/* This flags is set to scroll the clist to the selected value as soon as
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it appears. There might be a better way of doing this. */
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gboolean scroll_on_expose;
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};
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struct _GtkFontSelectionClass
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{
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GtkWindowClass parent_class;
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/* This is a table with each FontInfo representing one font family+foundry */
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FontInfo *font_info;
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gint nfonts;
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/* This stores all the valid combinations of properties for every family.
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Each FontInfo holds an index into its own space in this one big array. */
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FontStyle *font_styles;
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gint nstyles;
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/* This stores all the font sizes available for every style.
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Each style holds an index into these arrays. */
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guint16 *pixel_sizes;
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guint16 *point_sizes;
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/* These are the arrays of all possible weights/slants/set widths/spacings
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and the amount of space allocated for each array. The extra array is
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used for the foundries strings. */
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gchar **properties[GTK_NUM_FONT_PROPERTIES];
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guint16 nproperties[GTK_NUM_FONT_PROPERTIES];
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guint16 space_allocated[GTK_NUM_FONT_PROPERTIES];
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/* Whether any scalable bitmap fonts are available. */
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gboolean scaled_bitmaps_available;
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};
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struct _GtkFontSelectionDialog
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{
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GtkWindow window;
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GtkWidget *fontsel;
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GtkWidget *main_vbox;
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GtkWidget *action_area;
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GtkWidget *ok_button;
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/* The 'Apply' button is not shown by default but you can show/hide it. */
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GtkWidget *apply_button;
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GtkWidget *cancel_button;
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/* If the user changes the width of the dialog, we turn auto-shrink off. */
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gint dialog_width;
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gboolean auto_resize;
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};
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struct _GtkFontSelectionDialogClass
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{
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GtkWindowClass parent_class;
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};
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/* FontSelection */
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guint gtk_font_selection_get_type (void);
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GtkWidget* gtk_font_selection_new (void);
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/* This returns the X Logical Font Description fontname, or NULL if no font
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is selected. Note that there is a slight possibility that the font might not
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have been loaded OK. You should call gtk_font_selection_get_font() to see
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if it has been loaded OK.
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You should g_free() the returned font name after you're done with it. */
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gchar* gtk_font_selection_get_font_name (GtkFontSelection *fontsel);
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/* This will return the current GdkFont, or NULL if none is selected or there
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was a problem loading it. Remember to use gdk_font_ref/unref() if you want
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to use the font (in a style, for example). */
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GdkFont* gtk_font_selection_get_font (GtkFontSelection *fontsel);
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/* This sets the currently displayed font. It should be a valid X Logical
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Font Description font name (anything else will be ignored), e.g.
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"-adobe-courier-bold-o-normal--25-*-*-*-*-*-*-*"
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It returns TRUE on success. */
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gboolean gtk_font_selection_set_font_name (GtkFontSelection *fontsel,
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const gchar *fontname);
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/* This returns the text in the preview entry. You should copy the returned
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text if you need it. */
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gchar* gtk_font_selection_get_preview_text (GtkFontSelection *fontsel);
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/* This sets the text in the preview entry. It will be copied by the entry,
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so there's no need to g_strdup() it first. */
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void gtk_font_selection_set_preview_text (GtkFontSelection *fontsel,
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const gchar *text);
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/* FontSelectionDialog */
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guint gtk_font_selection_dialog_get_type (void);
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GtkWidget* gtk_font_selection_dialog_new (const gchar *title);
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/* These simply call the corresponding FontSelection function. */
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gchar* gtk_font_selection_dialog_get_font_name
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(GtkFontSelectionDialog *fsd);
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GdkFont* gtk_font_selection_dialog_get_font (GtkFontSelectionDialog *fsd);
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gboolean gtk_font_selection_dialog_set_font_name
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(GtkFontSelectionDialog *fsd,
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const gchar *fontname);
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gchar* gtk_font_selection_dialog_get_preview_text
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(GtkFontSelectionDialog *fsd);
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void gtk_font_selection_dialog_set_preview_text
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(GtkFontSelectionDialog *fsd,
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const gchar *text);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GTK_FONTSEL_H__ */
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