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WRaster: add functions to save image on disk

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This patch adds the RSaveTitledImage() function to the WRaster lib
to be able to save file on disk either as a PNG or a JPEG file.
Those two formats depends on optional external libs.
The function can take an optional title/comment which will
be save inside the file.

The WRaster lib and header versions are bumped.
This commit is contained in:
David Maciejak
2023-03-01 20:36:09 +08:00
committed by Carlos R. Mafra
parent 3cc5808dcd
commit c8883fdbb0
10 changed files with 286 additions and 16 deletions
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5
wrlib/wraster.h.in
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@@ -41,7 +41,7 @@
/* version of the header for the library */
#define WRASTER_HEADER_VERSION 24
#define WRASTER_HEADER_VERSION 25
#include <X11/Xlib.h>
@@ -391,6 +391,9 @@ RImage *RGetImageFromXPMData(RContext *context, char **xpmData)
Bool RSaveImage(RImage *image, const char *filename, const char *format)
__wrlib_nonnull(1, 2, 3);
Bool RSaveTitledImage(RImage *image, const char *filename, const char *format, char *title)
__wrlib_nonnull(1, 2, 3);
/*
* Area manipulation
*/