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/*
* pixmapInt.h --
*
* Generic header file for the pixmap image type.
* This is NOT a public header file.
*
* Copyright (c) 1996, Expert Interface Technologies
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
*/
#ifndef _TKIMG_PIXMAP_INT_H_
#define _TKIMG_PIXMAP_INT_H_
#include "tkimg.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*
* Constants
*/
#define XPM_MONO 1
#define XPM_GRAY_4 2
#define XPM_GRAY 3
#define XPM_COLOR 4
#define XPM_SYMBOLIC 5
#define XPM_UNKNOWN 6
/*
* The following data structure represents the master for a pixmap
* image:
*/
typedef struct PixmapMaster {
Tk_ImageMaster tkMaster; /* Tk's token for image master. NULL means
* the image is being deleted. */
Tcl_Interp *interp; /* Interpreter for application that is
* using image. */
Tcl_Command imageCmd; /* Token for image command (used to delete
* it when the image goes away). NULL means
* the image command has already been
* deleted. */
char *fileString; /* Value of -file option (malloc'ed).
* valid only if the -file option is specified
*/
char *dataString; /* Value of -data option (malloc'ed).
* valid only if the -data option is specified
*/
/* First in list of all instances associated
* with this master. */
int size[2]; /* width and height */
int ncolors; /* number of colors */
int cpp; /* characters per pixel */
char **data; /* The data that defines this pixmap
* image (array of strings). It is
* converted into an X Pixmap when this
* image is instanciated
*/
int isDataAlloced; /* False iff the data is got from
* the -id switch */
struct PixmapInstance *instancePtr;
} PixmapMaster;
typedef struct ColorStruct {
char c; /* This is used if CPP is one */
char *cstring; /* This is used if CPP is bigger than one */
XColor *colorPtr;
} ColorStruct;
/*----------------------------------------------------------------------
* PixmapInstance --
*
* Represents all of the instances of an image that lie within a
* particular window:
*
* %% ToDo
* Currently one instance is created for each window that uses
* this pixmap. This is usually OK because pixmaps are usually
* not shared or only shared by a small number of windows. To
* improve resource allocation, we can create an instance for
* each (Display x Visual x Depth) combo. This will usually
* reduce the number of instances to one.
*----------------------------------------------------------------------
*/
typedef struct PixmapInstance {
int refCount; /* Number of instances that share this
* data structure. */
PixmapMaster *masterPtr; /* Pointer to master for image. */
Tk_Window tkwin; /* Window in which the instances will be
* displayed. */
Pixmap pixmap; /* The pixmap to display. */
struct PixmapInstance *nextPtr;
/* Next in list of all instance structures
* associated with masterPtr (NULL means
* end of list).
*/
ColorStruct *colors;
ClientData clientData; /* Place holder for platform specific
* instance data */
} PixmapInstance;
/*
* Functions exported by the platform specific parts for use by the
* generic part of the implementation
*/
MODULE_SCOPE void TkimgInitPixmapInstance(
PixmapMaster *masterPtr,
PixmapInstance *instancePtr);
MODULE_SCOPE void TkimgXpmAllocTmpBuffer(
PixmapMaster *masterPtr,
PixmapInstance *instancePtr,
XImage **imagePtr, XImage **maskPtr);
MODULE_SCOPE void TkimgXpmFreeTmpBuffer(
PixmapMaster *masterPtr,
PixmapInstance *instancePtr,
XImage *image, XImage *mask);
MODULE_SCOPE void TkimgXpmSetPixel(
PixmapInstance *instancePtr, XImage *image,
XImage *mask, int x, int y, XColor *colorPtr,
int *isTranspPtr);
MODULE_SCOPE void TkimgXpmRealizePixmap(
PixmapMaster *masterPtr,
PixmapInstance *instancePtr,
XImage *image, XImage *mask, int isTransp);
MODULE_SCOPE void TkimgXpmFreeInstanceData(
PixmapInstance *instancePtr, int delete);
MODULE_SCOPE void TkimgpXpmDisplay(ClientData clientData,
Display *display, Drawable drawable,
int imageX, int imageY, int width, int height,
int drawableX, int drawableY);
/*
* Declarations of internal functions, which are exported for tcl package management.
*/
extern DLLEXPORT int Tkimgpixmap_Init(Tcl_Interp *interp);
extern DLLEXPORT int Tkimgpixmap_SafeInit(Tcl_Interp *interp);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif
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