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/*
* This file is part of the XForms library package.
*
* XForms is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1, or
* (at your option) any later version.
*
* XForms 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with XForms. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* This file is part of the XForms library package.
* Copyright (c) 1998-2002 T.C. Zhao
* All rights reserved.
*
* Handling image annotation (text)
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "include/forms.h"
#include "flinternal.h"
#include "flimage.h"
#include "flimage_int.h"
#include <stdlib.h>
static void display_text( FL_IMAGE * im );
/***************************************
***************************************/
int
flimage_add_text( FL_IMAGE * im,
const char * str,
int len,
int style,
int size,
unsigned int tcol,
unsigned int bcol,
int tran,
double tx,
double ty,
int rot )
{
FLIMAGE_TEXT *text;
if ( ! str || ! *str || ! len || ! size || ! im )
return -1;
im->text = fl_realloc( im->text, ( im->ntext + 1 ) * sizeof *im->text );
if ( ! im->text )
{
flimage_error( im, "AddText: malloc failed" );
return -1;
}
text = im->text + im->ntext;
memset( text, 0, sizeof *text );
text->str = fl_strdup( str );
text->len = len;
text->angle = rot;
text->size = size;
text->style = style;
text->color = tcol;
text->bcolor = bcol;
text->nobk = tran;
text->x = im->xdist_offset + tx * im->xdist_scale;
text->y = im->ydist_offset + ty * im->ydist_scale;
im->free_text = flimage_delete_all_text;
im->display_text = display_text;
return ++im->ntext;
}
/***************************************
***************************************/
int
flimage_add_text_struct( FL_IMAGE * im,
const FLIMAGE_TEXT * txt )
{
FLIMAGE_TEXT *text;
if ( ! txt || ! im || ! txt->str )
return -1;
if ( txt->len <= 0 )
{
flimage_error( im, "AddTextStruct: bad text length (%d)", txt->len );
return -1;
}
im->text = fl_realloc( im->text, ( im->ntext + 1 ) * sizeof *im->text );
if ( ! im->text)
return -1;
text = im->text + im->ntext;
memcpy( text, txt, sizeof *text );
text->str = fl_malloc( txt->len + 1 );
memcpy( text->str, txt->str, txt->len );
text->str[ txt->len ] = '\0';
im->free_text = flimage_delete_all_text;
im->display_text = display_text;
return ++im->ntext;
}
/***************************************
***************************************/
void
flimage_delete_all_text( FL_IMAGE * im )
{
int i;
if ( ! im || ! im->ntext || ! im->text )
return;
for ( i = 0; i < im->ntext; i++ )
fl_free( im->text[ i ].str );
fl_free( im->text );
im->ntext = 0;
im->text = 0;
}
/***************************************
***************************************/
static void
display_text( FL_IMAGE * im )
{
FLIMAGE_TEXT *t,
*tend;
FLI_TARGET target;
if ( im->dont_display_text || im->ntext == 0 )
return;
if ( ! im->textgc )
im->textgc = XCreateGC( im->xdisplay, im->win, 0, 0 );
memcpy( &target, fli_internal_init( ), sizeof target );
target.display = im->xdisplay;
target.win = im->win;
target.isRGBColor = 1;
target.textgc = im->textgc;
target.gc = im->gc;
fli_switch_target( &target );
for ( t = im->text, tend = t + im->ntext; t < tend; t++ )
fli_draw_text_inside (t->align,
t->x + im->wxd - im->sxd -1,
t->y + im->wyd - im->syd -1,
2, 2, t->str,
t->style, t->size, t->color, t->bcolor,
! t->nobk );
fli_restore_target( );
}
/*
* Local variables:
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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