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/* canvas definition */
typedef struct {
ltgenericd g;
tdisplay dpy; /* current display */
Display *xdpy; /* X Display */
Window win; /* X window */
Drawable buf; /* either the window or the pixmap */
GC gc; /* X graphics context, for scrolling, etc... */
GC gcerase; /* X graphics context, for clearing areas */
GC gcpage; /* for drawing page boundaries */
GC gcdrag; /* for drawing drag boxes */
GC gcdragsolid; /* for drawing solid drag boxes */
GC xgc; /* for drawing user stuff, is changed to match
the context passed */
tcontext tgc; /* context matching xgc, for knowing what to change */
int scr; /* X screen */
int depth; /* X window display depth */
unsigned long bg; /* background pixel value */
unsigned long fg; /* foreground pixel value */
unsigned long blk; /* black pixel value */
unsigned long wht; /* white pixel value */
int xpos,ypos; /* x and y position of top left corner, for scrolling */
/* ^^^ these change with magnification */
int cw, ch; /* width and height of canvas window */
int magx, magy; /* x and y magnification levels,
==1,2,4,8,etc. or -2,-4,-8,etc.
1=normal, 2=double, -2=half, etc... */
int buffer; /* 1 if we will use a buffer */
Pixmap back; /* X window pixmap for back display (if possible) */
int ax,ay,aw,ah; /* area we are drawing to, draw requests outside this
area will not be honored */
int clipping;
int dx, dy, dw, dh; /* area that we must draw to, for add area */
int areaset; /* 1 if the area has been set, for add area */
Xv_window pw; /* Xview Paint window */
Canvas cvs; /* Xview canvas */
int scrollx, scrolly;
Scrollbar x, y; /* 2 scrollbars */
/* ^^^ VIEW_START & OBJECT_LEN change with magnification */
Frame parent; /* xview parent frame */
/* real are for the normalized size, pagew,h is for current */
int realpagew,realpageh; /* in screen pixels */
int pagew,pageh; /* in screen pixels */
/* ^^^ these change with magnification */
int cellw,cellh; /* size of one cell, for scrolling */
int cvsw,cvsh; /* in pages */
int pages; /* 1 if pages should be shown */
int oktodraw; /* 1 if first expose event has happened */
int (*do_events)();
int printing; /* 1 if we are printing on this canvas */
tp_type printtype; /* 0 for postscript, 1 for PICT2 */
FILE *printfile; /* file we are printing to */
char *printname; /* file name we are printing to */
void (*do_timer)();
} ltcanvasd, *ltcanvas;
typedef struct CANVAS_LIST {
ltcanvas c;
struct CANVAS_LIST *next;
} canvas_listd, *canvas_list;
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