-/* xscreensaver, Copyright (c) 1991-2016 Jamie Zawinski <jwz@jwz.org>
+/* xscreensaver, Copyright (c) 1991-2018 Jamie Zawinski <jwz@jwz.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
#define __JWXYZ_H__
#include <stdlib.h> /* For abort(). */
+#include <stdarg.h>
#if defined __FreeBSD__ || defined __MACH__ && defined __APPLE__
# include <sys/cdefs.h>
typedef unsigned long Time;
typedef unsigned int KeySym;
typedef unsigned int KeyCode;
-typedef unsigned int VisualID;
typedef unsigned long Atom; /* Must be as large as a char *. */
typedef struct jwxyz_Display Display;
-typedef struct jwxyz_Screen Screen;
+typedef struct jwxyz_Display Screen;
typedef struct jwxyz_Visual Visual;
typedef struct jwxyz_Drawable * Drawable;
typedef struct jwxyz_Colormap * Colormap;
typedef struct jwxyz_XtInputId * XtInputId;
typedef void * XtPointer;
typedef unsigned long XtInputMask;
+typedef struct jwxyz_linked_point linked_point;
+
#define XtInputReadMask (1L<<0)
#define XtInputWriteMask (1L<<1)
#define XtInputExceptMask (1L<<2)
#define XHeightOfScreen(s) (DisplayHeight(DisplayOfScreen(s),0))
#define XWidthMMOfScreen(s) (XDisplayWidthMM(DisplayOfScreen(s),0))
#define XHeightMMOfScreen(s) (XDisplayHeightMM(DisplayOfScreen(s),0))
+#define XDefaultScreenOfDisplay(d) (d)
+#define XDisplayOfScreen(s) (s)
+#define XDisplayNumberOfScreen(s) 0
+#define XScreenNumberOfScreen(s) 0
-#define ScreenCount(dpy) jwxyz_ScreenCount(dpy)
-extern int jwxyz_ScreenCount(Display *);
-
-extern Window XRootWindow (Display *, int screen);
-extern Screen *XDefaultScreenOfDisplay (Display *);
-extern Visual *XDefaultVisualOfScreen (Screen *);
-extern Display *XDisplayOfScreen (Screen *);
-extern int XDisplayNumberOfScreen (Screen *);
-extern int XScreenNumberOfScreen (Screen *);
extern int XDisplayWidth (Display *, int);
extern int XDisplayHeight (Display *, int);
extern int XDisplayWidthMM (Display *, int);
unsigned long XCellsOfScreen(Screen *);
extern int XDrawPoint (Display *, Drawable, GC, int x, int y);
-extern int XDrawPoints (Display *, Drawable, GC, XPoint *, int n, int mode);
-extern int XDrawSegments (Display *, Drawable, GC, XSegment *, int n);
-extern GC XCreateGC (Display *, Drawable, unsigned long mask, XGCValues *);
extern int XChangeGC (Display *, GC, unsigned long mask, XGCValues *);
-extern int XFreeGC (Display *, GC);
-extern int XClearWindow (Display *, Window);
extern int XClearArea (Display *, Window, int x, int y, int w, int h,Bool exp);
extern int XSetWindowBackground (Display *, Window, unsigned long);
extern Status XGetWindowAttributes (Display *, Window, XWindowAttributes *);
extern int XSetSubwindowMode (Display *, GC, int);
extern int XSetLineAttributes (Display *, GC, unsigned int line_width,
int line_style, int cap_style, int join_style);
-extern int XSetClipMask (Display *, GC, Pixmap);
-extern int XSetClipOrigin (Display *, GC, int x, int y);
extern int jwxyz_XSetAlphaAllowed (Display *, GC, Bool);
extern int jwxyz_XSetAntiAliasing (Display *, GC, Bool);
extern int XSync (Display *, Bool);
extern int XFreeColors (Display *, Colormap, unsigned long *px, int n,
unsigned long planes);
-extern int XFillPolygon (Display *, Drawable, GC,
- XPoint * points, int npoints, int shape, int mode);
extern int XCopyArea (Display *, Drawable src, Drawable dest, GC,
int src_x, int src_y,
unsigned int width, unsigned int height,
unsigned long plane);
extern int XDrawLine (Display *, Drawable, GC, int x1, int y1, int x2, int y2);
-extern int XDrawLines (Display *, Drawable, GC, XPoint *, int n, int mode);
extern int XDrawArc (Display *, Drawable, GC, int x, int y,
unsigned int width, unsigned int height,
int angle1, int angle2);
extern unsigned long XGetPixel (XImage *, int x, int y);
extern int XPutPixel (XImage *, int x, int y, unsigned long);
extern int XDestroyImage (XImage *);
-extern int XPutImage (Display *, Drawable, GC, XImage *,
- int src_x, int src_y, int dest_x, int dest_y,
- unsigned int w, unsigned int h);
extern XImage *XGetImage (Display *, Drawable, int x, int y,
unsigned int w, unsigned int h,
unsigned long pm, int fmt);
const char *data,
unsigned int w, unsigned int h,
unsigned long fg,
- unsigned int bg,
+ unsigned long bg,
unsigned int depth);
extern XPixmapFormatValues *XListPixmapFormats (Display *, int *count_ret);
Bool nsimg_p, void *NSImage_arg,
XRectangle *geom_ret,
int exif_rotation);
+extern XImage *jwxyz_png_to_ximage (Display *, Visual *,
+ const unsigned char *, unsigned long size);
extern int XSetGraphicsExposures (Display *, GC, Bool);
extern Bool XTranslateCoordinates (Display *, Window src_w, Window dest_w,
extern int XTextExtents (XFontStruct *, const char *, int length,
int *dir_ret, int *ascent_ret, int *descent_ret,
XCharStruct *overall_ret);
-extern char * jwxyz_unicode_character_name (Font, unsigned long uc);
+extern char * jwxyz_unicode_character_name (Display *, Font, unsigned long uc);
extern int XTextExtents16 (XFontStruct *, const XChar2b *, int length,
int *dir_ret, int *ascent_ret, int *descent_ret,
XCharStruct *overall_ret);
XRectangle *overall_logical_return);
extern void Xutf8DrawString (Display *, Drawable, XFontSet, GC,
int x, int y, const char *, int num_bytes);
-extern const char *jwxyz_nativeFontName (Font, float *size);
extern Pixmap XCreatePixmap (Display *, Drawable,
unsigned int width, unsigned int height,
extern char *XGetAtomName (Display *, Atom);
+extern void set_points_list(XPoint *points, int npoints, linked_point *root);
+extern void traverse_points_list(Display *dpy, linked_point * root);
+extern void draw_three_vertices(Display *dpy, linked_point * a,
+ Bool triangle);
+extern double compute_edge_length(linked_point * a, linked_point * b);
+extern double get_angle(double a, double b, double c);
+extern Bool is_same_slope(linked_point * a);
+extern Bool is_an_ear(linked_point * a);
+extern Bool is_three_point_loop(linked_point * head);
+
+extern int draw_arc_gl(Display *dpy, Drawable d, GC gc, int x, int y,
+ unsigned int width, unsigned int height,
+ int angle1, int angle2, Bool fill_p);
+
+// Log()/Logv(), for debugging JWXYZ. Screenhacks should still use
+// fprintf(stderr, ...).
+extern void Log(const char *format, ...)
+#if defined __GNUC__ || defined __clang__
+ __attribute__((format(printf, 1, 2)))
+#endif
+ ;
+
+extern void jwxyz_logv(Bool error, const char *fmt, va_list args);
+#define Logv(format, args) (jwxyz_logv(False, format, args))
+
// Xt timers and fds
extern XtAppContext XtDisplayToApplicationContext (Display *);
typedef void (*XtTimerCallbackProc) (XtPointer closure, XtIntervalId *);
extern void XtRemoveInput (XtInputId);
extern XtInputMask XtAppPending (XtAppContext);
extern void XtAppProcessEvent (XtAppContext, XtInputMask);
-extern struct jwxyz_sources_data *display_sources_data (Display *);
// Some GLX stuff that also doesn't technically belong here...
// from XScreenSaverGLView.m
// also declared in utils/visual.h
extern int has_writable_cells (Screen *, Visual *);
extern int visual_depth (Screen *, Visual *);
+extern int visual_pixmap_depth (Screen *, Visual *);
extern int visual_cells (Screen *, Visual *);
extern int visual_class (Screen *, Visual *);
-extern int get_bits_per_pixel (Display *, int);
+extern void visual_rgb_masks (Screen *screen, Visual *visual,
+ unsigned long *red_mask,
+ unsigned long *green_mask,
+ unsigned long *blue_mask);
extern int screen_number (Screen *);
// also declared in utils/grabclient.h
extern void clear_gl_error (void);
extern void check_gl_error (const char *type);
+// A Visual is supposed to be an opaque type, even though Xlib.h defines it.
+// Only utils/xft.c uses this, out of necessity.
struct jwxyz_Visual {
- VisualID visualid; /* visual id of this visual */
int class; /* class of screen (monochrome, etc.) */
- unsigned long red_mask, green_mask, blue_mask; /* mask values */
- int bits_per_rgb; /* log base 2 of distinct color values */
-// int map_entries; /* color map entries */
+ unsigned long red_mask, green_mask, blue_mask; /* same as Xlib.h */
+ unsigned long alpha_mask; /* new */
};
struct jwxyz_XGCValues {
unsigned char byte2;
};
+
+struct jwxyz_vtbl {
+ Window (*root) (Display *);
+ Visual *(*visual) (Display *);
+ struct jwxyz_sources_data *(*display_sources_data) (Display *);
+
+ unsigned long *(*window_background) (Display *);
+ int (*draw_arc) (Display *dpy, Drawable d, GC gc, int x, int y,
+ unsigned int width, unsigned int height,
+ int angle1, int angle2, Bool fill_p);
+ void (*fill_rects) (Display *dpy, Drawable d, GC gc,
+ const XRectangle *rectangles,
+ unsigned long nrects, unsigned long pixel);
+ XGCValues *(*gc_gcv) (GC gc);
+ unsigned int (*gc_depth) (GC gc);
+ int (*draw_string) (Display *dpy, Drawable d, GC gc, int x, int y,
+ const char *str, size_t len, Bool utf8);
+
+ void (*copy_area) (Display *dpy, Drawable src, Drawable dst, GC gc,
+ int src_x, int src_y,
+ unsigned int width, unsigned int height,
+ int dst_x, int dst_y);
+
+ int (*DrawPoints) (Display *, Drawable, GC, XPoint *, int n, int mode);
+ int (*DrawSegments) (Display *, Drawable, GC, XSegment *, int n);
+ GC (*CreateGC) (Display *, Drawable, unsigned long mask, XGCValues *);
+ int (*FreeGC) (Display *, GC);
+ int (*ClearWindow) (Display *, Window);
+ int (*SetClipMask) (Display *, GC, Pixmap);
+ int (*SetClipOrigin) (Display *, GC, int x, int y);
+ int (*FillPolygon) (Display *, Drawable, GC,
+ XPoint * points, int npoints, int shape, int mode);
+ int (*DrawLines) (Display *, Drawable, GC, XPoint *, int n, int mode);
+
+ int (*PutImage) (Display *, Drawable, GC, XImage *,
+ int src_x, int src_y, int dest_x, int dest_y,
+ unsigned int w, unsigned int h);
+ XImage *(*GetSubImage) (Display *dpy, Drawable d, int x, int y,
+ unsigned int width, unsigned int height,
+ unsigned long plane_mask, int format,
+ XImage *dest_image, int dest_x, int dest_y);
+};
+
+#define JWXYZ_VTBL(dpy) (*(struct jwxyz_vtbl **)(dpy))
+
+#define XRootWindow(dpy, screen) \
+ ((dpy) ? JWXYZ_VTBL(dpy)->root(dpy) : 0)
+#define XDefaultVisualOfScreen(screen) \
+ ((screen) ? JWXYZ_VTBL(screen)->visual(screen) : 0)
+
+#define XDrawPoints(dpy, d, gc, points, n, mode) \
+ (JWXYZ_VTBL(dpy)->DrawPoints (dpy, d, gc, points, n, mode))
+#define XDrawSegments(dpy, d, gc, segments, n) \
+ (JWXYZ_VTBL(dpy)->DrawSegments (dpy, d, gc, segments, n))
+#define XCreateGC(dpy, d, mask, gcv) \
+ (JWXYZ_VTBL(dpy)->CreateGC (dpy, d, mask, gcv))
+#define XFreeGC(dpy, gc) \
+ (JWXYZ_VTBL(dpy)->FreeGC (dpy, gc))
+#define XClearWindow(dpy, win) \
+ (JWXYZ_VTBL(dpy)->ClearWindow(dpy, win))
+#define XSetClipMask(dpy, gc, m) \
+ (JWXYZ_VTBL(dpy)->SetClipMask (dpy, gc, m))
+#define XSetClipOrigin(dpy, gc, x, y) \
+ (JWXYZ_VTBL(dpy)->SetClipOrigin (dpy, gc, x, y))
+#define XFillPolygon(dpy, d, gc, points, npoints, shape, mode) \
+ (JWXYZ_VTBL(dpy)->FillPolygon (dpy, d, gc, points, npoints, shape, mode))
+#define XDrawLines(dpy, d, gc, points, n, mode) \
+ (JWXYZ_VTBL(dpy)->DrawLines (dpy, d, gc, points, n, mode))
+#define XPutImage(dpy, d, gc, image, src_x, src_y, dest_x, dest_y, w, h) \
+ (JWXYZ_VTBL(dpy)->PutImage (dpy, d, gc, image, src_x, src_y, \
+ dest_x, dest_y, w, h))
+#define XGetSubImage(dpy, d, x, y, width, height, plane_mask, \
+ format, dest_image, dest_x, dest_y) \
+ (JWXYZ_VTBL(dpy)->GetSubImage (dpy, d, x, y, width, height, plane_mask, \
+ format, dest_image, dest_x, dest_y))
+
+
#endif /* __JWXYZ_H__ */
projects / xscreensaver / blobdiff