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/*
Copyright (c) 2003 Bruno T. C. de Oliveira
LICENSE INFORMATION:
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
Copyright (c) 2002 Bruno T. C. de Oliveira
INFORMAES DE LICENA:
Este programa um software de livre distribuio; voc pode
redistribu-lo e/ou modific-lo sob os termos da GNU General
Public License, conforme publicado pela Free Software Foundation,
pela verso 2 da licena ou qualquer verso posterior.
Este programa distribudo na esperana de que ele ser til
aos seus usurios, porm, SEM QUAISQUER GARANTIAS; sem sequer
a garantia implcita de COMERCIABILIDADE ou DE ADEQUAO A
QUALQUER FINALIDADE ESPECFICA. Consulte a GNU General Public
License para obter mais detalhes (uma cpia acompanha este
programa, armazenada no arquivo COPYING).
*/
#ifndef _btco_aewan_psd_h
#define _btco_aewan_psd_h
#include "bores/bores.h"
#include "version.h"
/* selection modes: */
#define SM_NONE 0 /* no selection */
#define SM_SELECT 1 /* grow/shrink selection box */
#define SM_FLOAT 2 /* paste mode: clipboard floats around screen */
struct _Document;
/* global program state data declarations */
extern struct _Document *_doc;
/* the current document. Must ALWAYS be non-null. */
extern char *_filename; /* the name of the file from which it was loaded;
* NULL if new file */
extern int _lyr; /* currently active layer. This is a valid layer
* index if and only if _doc->layer_count >= 1 */
extern int _x, _y; /* cursor position (logical coordinates) */
extern int _svx, _svy;/* "smallest visible x" and "smallest visible y"
* These are used in order to convert logical coordinates
* to screen coordinates. Logical coordinates _svx,_svy
* are mapped to screen (0,0). */
extern int _fg, _bg; /* currently selected foreground and background colors */
extern int _selmode; /* selection mode: SM_NONE, SM_SELECT, SM_FLOAT */
extern int _ax, _ay; /* the anchor-point (i.e. where the selection begins).
* Valid only if _selmode == true */
extern bool _insmode;/* whether insert mode is on. In insert mode, typing
* a character on a line shifts the other characters
* to the right. */
extern bool _lgmode; /* line graphics mode. When this mode is active,
certain keystrokes produce different characters */
extern bool _compmode; /* composite mode. In this mode, all layers will
* be visible. */
extern struct _Layer *_clipboard;
/* clipboard layer. NULL if nothing in clipboard. */
/* --- functions that operate on psd ------------------------------------- */
/* Zeroes program state data */
void zero_state(void);
/* Convenience function that returns whether document is empty or not */
bool doc_empty(void);
/* Obtains normalized selection coordinates. Returned coordinates x0, y0,
* x1, y1 represent the selection rectangle, with the property that
* x0 <= x1 and y0 <= y1 */
void get_norm_sel(int *x0, int *y0, int *x1, int *y1);
/* Switches active layer to l. Does appropriate coordinate bound
* checking and other administrative tasks */
void switch_to_layer(int l);
#endif
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