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/*
* Zapping (TV viewer for the Gnome Desktop)
*
* Copyright (C) 2005 Michael H. Schimek
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: view.h,v 1.1 2005/09/01 01:31:18 mschimek Exp $ */
#ifndef SUBTITLE_VIEW_H
#define SUBTITLE_VIEW_H
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gtk/gtk.h>
#include "libvbi/page.h"
#include "libvbi/lang.h"
#include "libvbi/exp-gfx.h"
#include "libvbi/vbi_decoder.h"
G_BEGIN_DECLS
#define TYPE_SUBTITLE_VIEW (subtitle_view_get_type ())
#define SUBTITLE_VIEW(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), TYPE_SUBTITLE_VIEW, SubtitleView))
#define SUBTITLE_VIEW_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), TYPE_SUBTITLE_VIEW, SubtitleViewClass))
#define IS_SUBTITLE_VIEW(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), TYPE_SUBTITLE_VIEW))
#define IS_SUBTITLE_VIEW_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), TYPE_SUBTITLE_VIEW))
#define SUBTITLE_VIEW_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), TYPE_SUBTITLE_VIEW, SubtitleViewClass))
typedef struct _SubtitleView SubtitleView;
typedef struct _SubtitleViewClass SubtitleViewClass;
struct subt_image
{
/* Scaled image of pg or NULL. */
GdkPixbuf * pixbuf;
gboolean valid;
/* Scaled character cell size. */
gdouble cell_width;
gdouble cell_height;
/* Shortcut: redraw only the changed area. */
GdkRectangle expose;
};
struct _SubtitleView
{
GtkDrawingArea darea;
/* Subtitle position (whole page, not just opaque text)
relative to bounds. Default 0.5, 0.5. */
gdouble rel_x;
gdouble rel_y;
/* Subtitle size (whole page) relative to nominal size, which is
some arbitrary fraction of bounds. Default 1.0. Must be > 0.0. */
gdouble rel_size;
gboolean roll_enable;
GtkActionGroup * action_group;
vbi3_charset_code override_charset;
void
(* show_page) (SubtitleView * view,
vbi3_page * pg);
/* Current network, any subno. */
gboolean
(* load_page) (SubtitleView * view,
vbi3_pgno pgno);
/* Current network, any subno. */
gboolean
(* monitor_page) (SubtitleView * view,
vbi3_pgno pgno);
void
(* start_rolling) (SubtitleView * view);
GdkPixbuf *
(* get_image) (SubtitleView * view,
GdkRectangle * expose,
guint width,
guint height);
void
(* set_position) (SubtitleView * view,
gdouble x,
gdouble y);
void
(* set_size) (SubtitleView * view,
gdouble size);
void
(* set_charset) (SubtitleView * view,
vbi3_charset_code charset_code);
void
(* set_rolling) (SubtitleView * view,
gboolean enable);
void
(* set_video_bounds) (SubtitleView * view,
gint x,
gint y,
guint width,
guint height);
/*< private >*/
vbi3_decoder * vbi;
vbi3_pgno monitor_pgno;
/* The area allocated for subtitles. Actual size of the subtitle
window is darea.widget.allocation, which can be larger or smaller. */
GtkAllocation visibility_bounds;
/* Size and position of the video to scale the subtitles accordingly.
If not given we use visibility_bounds. */
GtkAllocation video_bounds;
gboolean have_video_bounds;
/* Displayed page or NULL. */
vbi3_page * pg;
guint first_opaque_row;
guint last_opaque_row;
/* Unscaled image of pg or NULL. */
GdkPixbuf * unscaled_pixbuf;
vbi3_image_format unscaled_format;
/* Scaled image of pg. */
struct subt_image capture_scaled;
struct subt_image display_scaled;
/* Non-transparent parts of darea. */
GdkRegion * region;
/* Closed Caption rolling. */
gboolean roll_start;
gboolean rolling;
gint roll_counter;
/* Interactive subtitle moving and scaling. */
gboolean moving;
gboolean scaling;
gint last_mouse_x;
gint last_mouse_y;
/* Load / show this page when done. */
vbi3_pgno load_pgno;
vbi3_page * show_pg;
/* Redraw / display the current page when done. */
gboolean redraw_unscaled_full;
gboolean redraw_display_scaled;
gint move_offset_x;
gint move_offset_y;
gint scale_center_x;
gint scale_center_y;
gdouble scale_factor;
};
struct _SubtitleViewClass
{
GtkDrawingAreaClass parent_class;
/* Signals. */
void (*position_changed)(SubtitleView *view);
};
extern GType
subtitle_view_get_type (void);
extern GtkWidget *
subtitle_view_new (void);
G_END_DECLS
#endif /* SUBTITLE_VIEW_H */
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