The R Project SVN R

/*
 *  R : A Computer Language for Statistical Data Analysis
 *  Copyright (C) 1995, 1996  Robert Gentleman and Ross Ihaka
 *  Copyright (C) 1997--2004  Robert Gentleman, Ross Ihaka and the
 *                R Development Core Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef _DEV_X11_H
#define _DEV_X11_H

/* These are the currently supported device "models" */
typedef enum {
    MONOCHROME = 0,
    GRAYSCALE,
    PSEUDOCOLOR1,
    PSEUDOCOLOR2,
    TRUECOLOR
} X_COLORTYPE;

typedef enum {
    WINDOW, /* NB: have "type > WINDOW" below ... */
    PNG,
    JPEG,
    XIMAGE
} X_GTYPE;


/*
  For the moment, we just conditionally activate the remainder of this
  section iff we are in devX11.c which defines R_X11_DEVICE.
  This allows devUI.h to include this file to get X_COLORTYPE.
  However, that should probably not be happening if HAVE_X11 is not defined
  due to the configuration being done --without-x. Why is unix/devices.c 
  not(?) getting compiled if no X11 support is available? DTL.
 */
#if R_X11_DEVICE

#include <stdio.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/Intrinsic.h>  /*->    Xlib.h  Xutil.h Xresource.h .. */



Rboolean newX11DeviceDriver(DevDesc*, char*, double, double, double, double, 
                X_COLORTYPE, int, int, int, SEXP, int);


    /********************************************************/
    /* Each driver can have its own device-specic graphical */
    /* parameters and resources.  these should be wrapped   */
    /* in a structure (like the x11Desc structure below)    */
    /* and attached to the overall device description via   */
    /* the dd->deviceSpecific pointer           */
    /* NOTE that there are generic graphical parameters */
    /* which must be set by the device driver, but are  */
    /* common to all device types (see Graphics.h)      */
    /* so go in the GPar structure rather than this device- */
    /* specific structure                   */
    /********************************************************/

typedef struct {
    /* Graphics Parameters */
    /* Local device copy so that we can detect */
    /* when parameter changes. */

    /* cex retained -- its a GRZ way of specifying text size, but
     * its too much work to change at this time (?)
     */
    double cex;             /* Character expansion */
    /* srt removed -- its a GRZ parameter and is not used in devX11.c
     */
    int lty;                /* Line type */
    double lwd;
    int col;                /* Color */
    /* fg and bg removed -- only use col and new param fill
     */
    int fill;
    int canvas;             /* Canvas */
    int fontface;           /* Typeface */
    int fontsize;           /* Size in points */
    int basefontface;           /* Typeface */
    int basefontsize;           /* Size in points */
    char basefontfamily[500];           /* Initial font family */

    /* X11 Driver Specific */
    /* Parameters with copy per X11 device. */

    int windowWidth;            /* Window width (pixels) */
    int windowHeight;           /* Window height (pixels) */
    int resize;             /* Window resized */
    Window window;          /* Graphics Window */
    GC wgc;             /* GC for window */
    Cursor gcursor;         /* Graphics Cursor */
    XSetWindowAttributes attributes;    /* Window attributes */
#if 0
    XColor fgcolor;         /* Foreground color */
    XColor bgcolor;         /* Background color */
#endif
    XRectangle clip;            /* The clipping rectangle */

    int usefixed;
    XFontStruct *fixedfont;
    XFontStruct *font;
    char fontfamily[500];               /* CURRENT fontfamily */
    char symbolfamily[500];
    X_GTYPE type;           /* Window or pixmap? */
    int npages;             /* counter for a pixmap */
    FILE *fp;               /* file for a bitmap device */
    char filename[PATH_MAX];        /* filename for a bitmap device */
    int quality;            /* JPEG quality */

    Rboolean handleOwnEvents;           /* Flag indicating whether events will be handled externally from R (TRUE),
                                           or whether R is to handle the events (FALSE) */
    int res_dpi;            /* used for png/jpeg */
} newX11Desc;



newX11Desc *Rf_allocNewX11DeviceDesc(double ps);
int      Rf_setX11Display(Display *dpy, double gamma_fac, X_COLORTYPE colormodel, int maxcube, Rboolean setHandlers);
int      Rf_setNewX11DeviceData(NewDevDesc *dd, double gamma_fac, newX11Desc *xd);
Rboolean newX11_Open(NewDevDesc *dd, newX11Desc *xd, 
             char *dsp, double w, double h, 
             double gamma_fac, X_COLORTYPE colormodel, 
             int maxcube, int bgcolor, int canvascolor, int res);

#endif /* R_X11_DEVICE */

#endif