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/******************************************************************************
* $Id$
*
* Project: MapServer
* Purpose: Functions for operating on a classObj that don't belong in a
* more specific file such as mapfile.c.
* Adapted from mapobject.c.
* Author: Sean Gillies, sgillies@frii.com
*
******************************************************************************
* Copyright (c) 2004, Sean Gillies
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies of this Software or works derived from this Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include
"mapserver.h"
/*
** Add a label to a classObj (order doesn't matter for labels like it does with
*styles)
*/
int
msAddLabelToClass
(
classObj
*
class
,
labelObj
*
label
) {
if
(!
label
) {
msSetError
(
MS_CHILDERR
,
"Can't add a NULL label."
,
"msAddLabelToClass()"
);
return
MS_FAILURE
;
}
if
(
msGrowClassLabels
(
class
)
==
NULL
)
return
MS_FAILURE
;
/* msGrowClassLabels will alloc the label, free it in this case */
free
(
class
->
labels
[
class
->
numlabels
]);
class
->
labels
[
class
->
numlabels
]
=
label
;
MS_REFCNT_INCR
(
label
);
class
->
numlabels
++
;
return
MS_SUCCESS
;
}
/*
** Remove a label from a classObj.
*/
labelObj
*
msRemoveLabelFromClass
(
classObj
*
class
,
int
nLabelIndex
) {
int
i
;
labelObj
*
label
;
if
(
nLabelIndex
<
0
||
nLabelIndex
>=
class
->
numlabels
) {
msSetError
(
MS_CHILDERR
,
"Cannot remove label, invalid index %d"
,
"msRemoveLabelFromClass()"
,
nLabelIndex
);
return
NULL
;
}
else
{
label
=
class
->
labels
[
nLabelIndex
];
for
(
i
=
nLabelIndex
;
i
<
class
->
numlabels
-
1
;
i
++
) {
class
->
labels
[
i
]
=
class
->
labels
[
i
+
1
];
}
class
->
labels
[
class
->
numlabels
-
1
]
=
NULL
;
class
->
numlabels
--
;
MS_REFCNT_DECR
(
label
);
return
label
;
}
}
/**
* Move the style up inside the array of styles.
*/
int
msMoveStyleUp
(
classObj
*
class
,
int
nStyleIndex
) {
styleObj
*
psTmpStyle
=
NULL
;
if
(
class
&&
nStyleIndex
<
class
->
numstyles
&&
nStyleIndex
>
0
) {
psTmpStyle
=
(
styleObj
*
)
malloc
(
sizeof
(
styleObj
));
initStyle
(
psTmpStyle
);
msCopyStyle
(
psTmpStyle
,
class
->
styles
[
nStyleIndex
]);
msCopyStyle
(
class
->
styles
[
nStyleIndex
],
class
->
styles
[
nStyleIndex
-
1
]);
msCopyStyle
(
class
->
styles
[
nStyleIndex
-
1
],
psTmpStyle
);
return
(
MS_SUCCESS
);
}
msSetError
(
MS_CHILDERR
,
"Invalid index: %d"
,
"msMoveStyleUp()"
,
nStyleIndex
);
return
(
MS_FAILURE
);
}
/**
* Move the style down inside the array of styles.
*/
int
msMoveStyleDown
(
classObj
*
class
,
int
nStyleIndex
) {
styleObj
*
psTmpStyle
=
NULL
;
if
(
class
&&
nStyleIndex
<
class
->
numstyles
-
1
&&
nStyleIndex
>=
0
) {
psTmpStyle
=
(
styleObj
*
)
malloc
(
sizeof
(
styleObj
));
initStyle
(
psTmpStyle
);
msCopyStyle
(
psTmpStyle
,
class
->
styles
[
nStyleIndex
]);
msCopyStyle
(
class
->
styles
[
nStyleIndex
],
class
->
styles
[
nStyleIndex
+
1
]);
msCopyStyle
(
class
->
styles
[
nStyleIndex
+
1
],
psTmpStyle
);
return
(
MS_SUCCESS
);
}
msSetError
(
MS_CHILDERR
,
"Invalid index: %d"
,
"msMoveStyleDown()"
,
nStyleIndex
);
return
(
MS_FAILURE
);
}
/* Moved here from mapscript.i
*
* Returns the index at which the style was inserted
*
*/
int
msInsertStyle
(
classObj
*
class
,
styleObj
*
style
,
int
nStyleIndex
) {
int
i
;
if
(!
style
) {
msSetError
(
MS_CHILDERR
,
"Can't insert a NULL Style"
,
"msInsertStyle()"
);
return
-1
;
}
/* Ensure there is room for a new style */
if
(
msGrowClassStyles
(
class
)
==
NULL
) {
return
-1
;
}
/* Catch attempt to insert past end of styles array */
else
if
(
nStyleIndex
>=
class
->
numstyles
) {
msSetError
(
MS_CHILDERR
,
"Cannot insert style beyond index %d"
,
"insertStyle()"
,
class
->
numstyles
-
1
);
return
-1
;
}
else
if
(
nStyleIndex
<
0
) {
/* Insert at the end by default */
class
->
styles
[
class
->
numstyles
]
=
style
;
MS_REFCNT_INCR
(
style
);
class
->
numstyles
++
;
return
class
->
numstyles
-
1
;
}
else
{
/* Move styles existing at the specified nStyleIndex or greater */
/* to a higher nStyleIndex */
for
(
i
=
class
->
numstyles
-
1
;
i
>=
nStyleIndex
;
i
--
) {
class
->
styles
[
i
+
1
]
=
class
->
styles
[
i
];
}
class
->
styles
[
nStyleIndex
]
=
style
;
MS_REFCNT_INCR
(
style
);
class
->
numstyles
++
;
return
nStyleIndex
;
}
}
styleObj
*
msRemoveStyle
(
classObj
*
class
,
int
nStyleIndex
) {
int
i
;
styleObj
*
style
;
if
(
nStyleIndex
<
0
||
nStyleIndex
>=
class
->
numstyles
) {
msSetError
(
MS_CHILDERR
,
"Cannot remove style, invalid nStyleIndex %d"
,
"removeStyle()"
,
nStyleIndex
);
return
NULL
;
}
else
{
style
=
class
->
styles
[
nStyleIndex
];
for
(
i
=
nStyleIndex
;
i
<
class
->
numstyles
-
1
;
i
++
) {
class
->
styles
[
i
]
=
class
->
styles
[
i
+
1
];
}
class
->
styles
[
class
->
numstyles
-
1
]
=
NULL
;
class
->
numstyles
--
;
MS_REFCNT_DECR
(
style
);
return
style
;
}
}
/**
* Delete the style identified by the index and shift
* styles that follows the deleted style.
*/
int
msDeleteStyle
(
classObj
*
class
,
int
nStyleIndex
) {
if
(
class
&&
nStyleIndex
<
class
->
numstyles
&&
nStyleIndex
>=
0
) {
if
(
freeStyle
(
class
->
styles
[
nStyleIndex
])
==
MS_SUCCESS
)
msFree
(
class
->
styles
[
nStyleIndex
]);
for
(
int
i
=
nStyleIndex
;
i
<
class
->
numstyles
-
1
;
i
++
) {
class
->
styles
[
i
]
=
class
->
styles
[
i
+
1
];
}
class
->
styles
[
class
->
numstyles
-
1
]
=
NULL
;
class
->
numstyles
--
;
return
(
MS_SUCCESS
);
}
msSetError
(
MS_CHILDERR
,
"Invalid index: %d"
,
"msDeleteStyle()"
,
nStyleIndex
);
return
(
MS_FAILURE
);
}
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