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Wrapper functions for {creat,destroy}ing an rsvg handle

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This wrapper functions should facilitate the handling of rsvg handles.
Especially unrefing with g_object_unref does not seem to work properly
using the lua bindings.
This commit is contained in:
Jochen Keil 2013-05-22 20:51:11 +02:00
parent 118332aa00
commit 32c60685ba
1 changed files with 64 additions and 7 deletions
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71
lua/librsvg-helper.h
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@ -25,18 +25,75 @@
#ifndef _LIBRSVG_HELPER_H_ #ifndef _LIBRSVG_HELPER_H_
#define _LIBRSVG_HELPER_H_ #define _LIBRSVG_HELPER_H_
#include <cairo.h> #include <glib>
#include <librsvg/rsvg.h>
cairo_text_extents_t *create_cairo_text_extents_t(void) { RsvgDimensionData *
return calloc(1, sizeof(cairo_text_extents_t)); rsvgDimensionDataCreate(void)
{
return (RsvgDimensionData *)calloc(1, sizeof(RsvgDimensionData));
} }
cairo_font_extents_t *create_cairo_font_extents_t(void) { void
return calloc(1, sizeof(cairo_font_extents_t)); rsvgDimensionDataGet(RsvgDimensionData * dd,
int * width, int * height, double * em, double * ex)
{
if (dd) {
*width = dd->width;
*height = dd->height;
*em = dd->em;
*ex = dd->ex;
}
} }
cairo_matrix_t *create_cairo_matrix_t(void) { RsvgPositionData *
return calloc(1, sizeof(cairo_matrix_t)); rsvgPositionDataCreate(void)
{
return (RsvgPositionData *)calloc(1, sizeof(RsvgPositionData));
}
void
rsvgPositionDataGet(RsvgPositionData * pd, int * x, int * y)
{
if (pd) {
*x = pd->x;
*y = pd->y;
}
}
RsvgHandle *
rsvg_create_handle_from_file(const char * filename)
{
GError * error = NULL;
RsvgHandle * handle = rsvg_handle_new_from_file(filename, &error);
if (error) {
g_object_unref(error);
if (handle)
g_object_unref(handle);
handle = NULL;
}
return handle;
}
int
rsvg_destroy_handle(RsvgHandle * handle)
{
int status = 0;
if (handle) {
GError * error = NULL;
status = rsvg_handle_close(handle, &error);
if (status)
g_object_unref(handle);
if (error)
g_object_unref(error);
}
return status;
} }
#endif /* _LIBRSVG_HELPER_H_ */ #endif /* _LIBRSVG_HELPER_H_ */