153 lines
2.8 KiB
C++
153 lines
2.8 KiB
C++
// Object part of VDisplay class
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/*
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Copyright (C) 1991-2001 The National Gallery
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <cstdlib>
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#include <cstring>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#include <vips/vipscpp.h>
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#ifdef WITH_DMALLOC
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#include <dmalloc.h>
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#endif /*WITH_DMALLOC*/
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VIPS_NAMESPACE_START
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/* Refcounting stuff first.
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*/
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// Free an im_col_display
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static void
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free_display( im_col_display *d )
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{
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}
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// Dupe an im_col_display
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static im_col_display *
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dup_display( im_col_display *in ) throw( VError )
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{
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return( in );
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}
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// Remove lut
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void VDisplay::refblock::cleanlut()
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{
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if( luts ) {
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im_free( luts );
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luts = 0;
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}
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}
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// Remove attached things
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void VDisplay::refblock::cleanref()
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{
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if( disp && priv ) {
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free_display( disp );
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disp = 0;
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priv = 0;
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}
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cleanlut();
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}
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// Get ready to write to disp
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void VDisplay::refblock::wready() throw( VError )
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{
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cleanlut();
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if( !priv ) {
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disp = dup_display( disp );
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priv = 1;
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}
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}
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// Check that luts are up-to-date
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void VDisplay::refblock::cluts() throw( VError )
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{
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}
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VDisplay::~VDisplay()
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{
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ref->nrefs--;
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if( !ref->nrefs )
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delete ref;
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}
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VDisplay &VDisplay::operator=( const VDisplay &a )
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{
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ref->nrefs--;
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if( ref->nrefs > 0 )
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// Need fresh
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ref = new refblock;
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else
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// Recycle old
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ref->cleanref();
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ref = a.ref;
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ref->nrefs++;
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return( *this );
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}
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VDisplay::VDisplay( const char *name ) throw( VError )
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{
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// Install display
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ref = new refblock;
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ref->disp = NULL;
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}
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VDisplay::VDisplay()
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{
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// Just use sRGB
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ref = new refblock;
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ref->disp = im_col_displays( 7 );
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}
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/*
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Setters and getters. We used to have a lot of code of the form:
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float &VDisplay::YCW()
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{ ref->wready(); return( ((im_col_display*)ref->disp)->d_YCW ); }
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This should be split to separate setters/getters so we can exploit const. Too
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annoying to do this on such a useless class (I'm certain no one used these
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functions anyway), fix in vips8.
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*/
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VIPS_NAMESPACE_END
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