diff options
Diffstat (limited to 'xnap.c')
| -rw-r--r-- | xnap.c | 35 |
1 files changed, 24 insertions, 11 deletions
@@ -30,6 +30,25 @@ int scr = -1; struct pointer_t p = {0}; XImage* img = NULL; +void compimg(void) +{ + /* create selection rectangle */ + int rx = MIN(p.x0, p.x1); + int ry = MIN(p.y0, p.y1); + int rw = MAX(p.x0, p.x1) - rx; + int rh = MAX(p.y0, p.y1) - ry; + + img = XGetImage(dpy, root, rx, ry, rw, rh, AllPlanes, ZPixmap); + if (!img) + die("XGetImage failed"); + + unsigned long p0 = XGetPixel(img, 0, 0); + fprintf(stderr, "first pixe =#%lx depth=%d bpp=%d\n", p0, img->depth, img->bits_per_pixel); + + XDestroyImage(img); + quit(True); +} + void die(const char* s) { fprintf(stderr, "xnap: %s", s); @@ -68,15 +87,7 @@ void run(void) } else if (ev.type == ButtonRelease && p.sel && b == Button1) { /* release selection */ p.sel = False; - - /* creating selection rectangle */ - int recx = MIN(p.x0, p.x1); - int recy = MIN(p.y0, p.y1); - int recw = MAX(p.x0, p.x1) - recx; - int rech = MAX(p.y0, p.y1) - recy; - - quit(False); - compimg() + compimg(); } } } @@ -84,7 +95,8 @@ void run(void) void setup(void) { /* X surface */ - if (!(dpy = XOpenDisplay(NULL))) + dpy = XOpenDisplay(NULL); + if (dpy == NULL) die ("failed to open display"); int scr = DefaultScreen(dpy); @@ -93,7 +105,7 @@ void setup(void) /* pointer */ p.ret = XGrabPointer( dpy, root, False, - ButtonPressMask | ButtonReleaseMask | PointerMotionMask | KeyPressMask, + ButtonPressMask | ButtonReleaseMask | PointerMotionMask, GrabModeAsync, GrabModeAsync, None, None, CurrentTime ); if (p.ret != GrabSuccess) @@ -106,6 +118,7 @@ int main(int argc, char** argv) (void) argv; setup(); + run(); quit(True); /* unreachable */ return EXIT_SUCCESS; |