#ifndef _TEXT_FLAGS_H_1c9ba079_
#define _TEXT_FLAGS_H_1c9ba079_

#define TEXTFLAG_RECTBG        0x00000001
#define TEXTFLAG_XF            0x0000000e
#define TEXTFLAG_XF_NONE           0x00000000
#define TEXTFLAG_XF_FLIP_X         0x00000002
#define TEXTFLAG_XF_FLIP_Y         0x00000004
#define TEXTFLAG_XF_ROT180         0x00000006
#define TEXTFLAG_XF_FLIP_XY        0x00000008
#define TEXTFLAG_XF_ROT_CCW        0x0000000a
#define TEXTFLAG_XF_ROT_CW         0x0000000c
#define TEXTFLAG_XF_FLIP_XMY       0x0000000e
#define TEXTFLAG_JUST          0x00000030
#define TEXTFLAG_JUST_L            0x00000010
#define TEXTFLAG_JUST_C            0x00000020
#define TEXTFLAG_JUST_R            0x00000030
#define TEXTFLAG_X             0x000000c0
#define TEXTFLAG_X_L               0x00000040
#define TEXTFLAG_X_C               0x00000080
#define TEXTFLAG_X_R               0x000000c0
#define TEXTFLAG_Y             0x00000700
#define TEXTFLAG_Y_TOP             0x00000100
#define TEXTFLAG_Y_CENTRE          0x00000200
#define TEXTFLAG_Y_BOTTOM          0x00000300
#define TEXTFLAG_Y_BASE_FIRST      0x00000400
#define TEXTFLAG_Y_BASE_LAST       0x00000500
#define TEXTFLAG_Y_CENTREBASE      0x00000600
#define TEXTFLAG_BBOXMARGIN    0x00000800
#define TEXTFLAG_NO_AUTO_SWAP  0x00001000

/*
 * Compose two transforms, returning the transform that's equivalent to
 *  applying first the first argument then the second argument.
 *
 * Masks off all but TEXTFLAG_XF bits in each argument.
 */
extern unsigned int textflag_xf_compose(unsigned int, unsigned int);

/*
 * Returns the inverse of a transform, the transform that, when
 *  composed with the input (in either order) returns the null
 *  transformation.
 *
 * Masks off all but TEXTFLAG_XF bits in its argument.
 */
extern unsigned int textflag_xf_invert(unsigned int);

/*
 * textflag_xf_x and _y implement transformations.  Given an input
 *  image sx by sy, a point (ix,iy) in it, and a transform xf, the X
 *  coordinate of that point in the transformed image is
 *  textflag_xf_x(xf,ix,iy,sx,sy) and the Y coordinate is ..._y(...).
 *  (ix and iy are allowed to be <0 or >sx/sy.)
 *  The size of the transformed image is textflag_xf_sx(xf,sx,sy) by
 *  textflag_xf_sy(xf,sx,sy).
 *
 * All these functions mask off all but the TEXTFLAG_XF bits in their
 *  transform argument.
 */
extern unsigned int textflag_xf_sx(unsigned int, unsigned int, unsigned int);
extern unsigned int textflag_xf_sy(unsigned int, unsigned int, unsigned int);
extern int textflag_xf_x(unsigned int, int, int, unsigned int, unsigned int);
extern int textflag_xf_y(unsigned int, int, int, unsigned int, unsigned int);

#endif