/**
* im_error_clear:
*
* Clear and reset the error buffer. This is typically called after presentng
* an error to the user.
*
* See also: im_error_buffer().
*/
void
im_error_clear( void )
{
g_mutex_lock( im__global_lock );
vips_buf_rewind( &im_error_buf );
g_mutex_unlock( im__global_lock );
}
/**
* vips_error_clear:
*
* Clear and reset the error buffer. This is typically called after presenting
* an error to the user.
*
* See also: vips_error_buffer().
*/
void
vips_error_clear( void )
{
g_mutex_lock( vips__global_lock );
vips_buf_rewind( &vips_error_buf );
g_mutex_unlock( vips__global_lock );
}
/**
* vips_buf_init:
* @buf: the buffer
*
* Initialize a buffer.
*/
void
vips_buf_init( VipsBuf *buf )
{
buf->base = NULL;
buf->mx = 0;
buf->dynamic = FALSE;
vips_buf_rewind( buf );
}
/**
* vips_buf_set_static:
* @buf: the buffer
* @base: the start of the memory area to use for storage
* @mx: the size of the storage area
*
* Attach the buffer to a static memory area. The buffer needs to have been
* initialised. The memory area needs to be at least 4 bytes long.
*/
void
vips_buf_set_static( VipsBuf *buf, char *base, int mx )
{
g_assert( mx >= 4 );
vips_buf_destroy( buf );
buf->base = base;
buf->mx = mx;
buf->dynamic = FALSE;
vips_buf_rewind( buf );
}
/**
* vips_buf_set_dynamic:
* @buf: the buffer
* @mx: the size of the storage area
*
* Attach the buffer to a heap memory area. The buffer needs to have been
* initialised. The memory area needs to be at least 4 bytes long.
*/
void
vips_buf_set_dynamic( VipsBuf *buf, int mx )
{
g_assert( mx >= 4 );
if( buf->mx == mx && buf->dynamic )
/* No change?
*/
vips_buf_rewind( buf );
else {
vips_buf_destroy( buf );
if( !(buf->base = VIPS_ARRAY( NULL, mx, char )) )
/* No error return, so just block writes.
*/
buf->full = TRUE;
else {
buf->mx = mx;
buf->dynamic = TRUE;
vips_buf_rewind( buf );
}
}
/* Return the main caption.
*/
static const char *
iimage_generate_caption( iObject *iobject )
{
iImage *iimage = IIMAGE( iobject );
Imageinfo *ii = iimage->value.ii;
VipsBuf *buf = &iimage->caption_buffer;
vips_buf_rewind( buf );
image_value_caption( &iimage->value, buf );
if( ii ) {
vips_buf_appends( buf, ", " );
iobject_info( IOBJECT( iimage->value.ii ), buf );
}
return( vips_buf_all( buf ) );
}
static const char *
iarrow_generate_caption( iObject *iobject )
{
static const char *names[] = {
CLASS_HGUIDE,
CLASS_VGUIDE,
CLASS_MARK,
CLASS_ARROW,
NULL
};
iArrow *iarrow = IARROW( iobject );
VipsBuf *buf = &iarrow->caption_buffer;
const int nimages = g_slist_length( CLASSMODEL( iarrow )->iimages );
Expr *expr;
gboolean result;
gboolean first;
int i;
if( !HEAPMODEL( iarrow )->row ||
!(expr = HEAPMODEL( iarrow )->row->expr) ||
!heap_is_class( &expr->root, &result ) ||
!result )
return( _( "No image" ) );
vips_buf_rewind( buf );
heapmodel_name( HEAPMODEL( iarrow ), buf );
vips_buf_appendf( buf, " " );
/* Used in (eg.) "Mark at (10, 10) on [A1, A2]"
*/
vips_buf_appendf( buf, _( "on" ) );
vips_buf_appendf( buf, " " );
if( nimages > 1 )
vips_buf_appendf( buf, "[" );
first = TRUE;
slist_map2( CLASSMODEL( iarrow )->iimages,
(SListMap2Fn) iarrow_generate_caption_sub, iarrow, &first );
if( nimages > 1 )
vips_buf_appendf( buf, "]" );
vips_buf_appendf( buf, " " );
for( i = 0; names[i]; i++ ) {
if( !heap_is_instanceof( names[i], &expr->root, &result ) )
break;
if( result ) {
switch( i ) {
case 0:
vips_buf_appendf( buf, _( "at %d" ),
iarrow->instance.area.top );
break;
case 1:
vips_buf_appendf( buf, _( "at %d" ),
iarrow->instance.area.left );
break;
case 2:
vips_buf_appendf( buf, _( "at (%d, %d)" ),
iarrow->instance.area.left,
iarrow->instance.area.top );
break;
case 3:
vips_buf_appendf( buf,
_( "at (%d, %d), offset (%d, %d)" ),
iarrow->instance.area.left,
iarrow->instance.area.top,
iarrow->instance.area.width,
iarrow->instance.area.height );
break;
default:
g_assert( 0 );
}
break;
}
}
return( vips_buf_all( buf ) );
}
