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/*
SANE EPSON backend
Copyright (C) 2001, 2005, 2008 SEIKO EPSON CORPORATION
Date Author Reason
06/01/2001 N.Sasaki New
This file is part of the `iscan' program.
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.
As a special exception, the copyright holders give permission
to link the code of this program with the esmod library and
distribute linked combinations including the two. You must obey
the GNU General Public License in all respects for all of the
code used other then esmod.
*/
#ifndef ___PISA_PREVIEW_WINDOW_H
#define ___PISA_PREVIEW_WINDOW_H
#include <gtk/gtk.h>
#include "pisa_enums.h"
#include "pisa_structs.h"
class preview_window
{
public:
preview_window ( ) { m_gc = NULL; }
// operation
int init ( void );
GtkWidget * create_window ( GtkWidget * parent );
int close_window ( int destroy );
int is_prev_img ( void ) { return m_is_prev; }
int resize_window ( void );
int auto_exposure ( void );
int update_img ( bool left = false );
void start_preview (void);
void start_zoom (void);
gint expose_event ( GtkWidget * widget, GdkEventExpose * event );
gint event ( GtkWidget * widget, GdkEvent * event );
void size_allocate ( GtkWidget * widget );
private:
// operation
GtkWidget * create_darea ( GtkWidget * parent );
long get_preview_resolution ( const _rectD * img_rect = 0 );
void resize_preview_window ( long width, long height );
void change_max_scan_area ( long width, long height );
void change_max_disp_area ( long width, long height );
void clear_image ( void );
void modify_max_val ( void );
void draw_marquee ( void );
// preview, zoom
void start_preview (bool zooming);
void reset_settings (bool zooming);
int set_preview_param (bool zooming);
void revert_resolution ( void );
void tool_usm (const pisa_image_info& info);
void zoom_boundary (_pointD& pt_offset, _pointD& pt_area,
const _pointD& pt_max, float rate) const;
// cursor
void create_cursor ( void );
int set_mouse_cursor ( int x, int y );
int search_cursor_state ( const _pointL & pt_lt,
const _pointL & pt_rb,
const _pointL & pt );
void change_cursor ( void );
// marquee
gint mouse_down ( GdkEvent * event );
gint mouse_move ( GdkEvent * event );
gint mouse_up ( GdkEvent * event );
int create_marquee ( const _pointL & pt_lt, const _pointL & pt_rb );
int delete_marquee ( void );
void move_marquee ( const _pointL & pt_lt, const _pointL & pt_rb );
void resize_marquee ( const _pointL & pt_lt, const _pointL & pt_rb );
void begin_mouse_move ( _pointL * pt_lt, _pointL * pt_rb );
void move_rect ( _pointL * pt_lt, _pointL * pt_rb, const _pointL & pt_move );
_pointD clientpix2inches ( _pointL & pt );
_pointL inches2clientpix ( _pointD & pt );
int get_marquee_point ( long i, _pointL * pt_lt, _pointL * pt_rb );
int check_min_size ( const _pointL & pt_lt, const _pointL & pt_rb );
void check_max_size ( _pointD * pt_offset, _pointD * pt_area,
int offset );
void check_ltrb ( _pointL * pt_lt, _pointL * pt_rb );
void draw_rect ( const _pointL & pt_lt, const _pointL & pt_rb );
// attribute
GtkWidget * m_win;
GtkWidget * m_prev;
long m_is_prev;
long m_img_width, m_img_height;
unsigned char * m_img;
unsigned char * m_img_org;
GdkGC * m_gc;
int m_cursor_state;
GdkCursor * m_cursor [ 11 ];
bool m_on_preview;
long m_allocate_width;
long m_allocate_height;
// for marquee
int m_drag;
_rectL m_client_rect;
_rectD m_max_img_rect;
_rectD m_img_rect;
_pointL m_pt_max_lt;
_pointL m_pt_max_rb;
_pointL m_pt_begin;
_pointL m_pt_old;
_pointL m_pt_old_lt;
_pointL m_pt_old_rb;
_pointD m_pt_save_offset;
_pointD m_pt_save_area;
};
inline void
preview_window::start_preview (void)
{
start_preview (false);
}
inline void
preview_window::start_zoom (void)
{
start_preview (true);
}
#endif // ___PISA_PREVIEW_WINDOW_H
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