commit af23f19

Set cursor state with maus_cur_set_mode

 1@@ -5,7 +5,7 @@
 2 #include <stdio.h>
 3 #include <stdint.h>
 4 
 5-#include "maus_keys.h"
 6+#include "maus_input.h"
 7 
 8 /* auto selection */
 9 #if !defined(BACKEND_WIN) && !defined(BACKEND_MAC) && \
10@@ -129,5 +129,8 @@ void maus_present(Maus* mw);
11    on resize success, else false */
12 bool maus_resize(Maus* mw, uint32_t width, uint32_t height);
13 
14+/* change behavior of mouse based on state passed */
15+void maus_cur_set_mode(Maus* mw, MausCursorState state);
16+
17 #endif /* MAUSWIN_H */
18 

 1@@ -1,3 +1,4 @@
 2+#include <X11/X.h>
 3 #include <stdbool.h>
 4 #include <stdlib.h>
 5 #include <sys/shm.h>
 6@@ -6,6 +7,7 @@
 7 #include <X11/Xlib.h>
 8 #include <X11/Xutil.h>
 9 #include <X11/keysym.h>
10+#include <X11/cursorfont.h>
11 #include <X11/extensions/XShm.h>
12 
13 #include "maus.h"
14@@ -480,3 +482,66 @@ bool maus_resize(Maus* mw, uint32_t width, uint32_t height)
15 	return fb_create(mw);
16 }
17 
18+void maus_cur_set_mode(Maus* mw, MausCursorState state)
19+{
20+	Display* dpy = mw->display;
21+	Window win = mw->win;
22+
23+	if (!dpy) {
24+		maus_log(stderr, "display is NULL");
25+		return;
26+	}
27+	if (win == None) {
28+		maus_log(stderr, "win is None");
29+		return;
30+	}
31+
32+	/* show cursor */
33+	if (state == MAUS_CURSOR_STATE_VISIBLE) {
34+		XUndefineCursor(dpy, win);
35+		XFlush(dpy);
36+		return;
37+	}
38+
39+	/* hide cursor */
40+	if (state == MAUS_CURSOR_STATE_HIDDEN) {
41+		Pixmap blank_pm = XCreatePixmap(dpy, win, 1, 1, 1);
42+		XColor black = {.red=0, .green=0, .blue=0};
43+		Cursor blank_cur = XCreatePixmapCursor(
44+			dpy, blank_pm, blank_pm, &black, &black, 0, 0
45+		);
46+		XFreePixmap(dpy, blank_pm);
47+
48+		XDefineCursor(dpy, win, blank_cur);
49+		XFreeCursor(dpy, blank_cur);
50+		XFlush(dpy);
51+		return;
52+	}
53+
54+	/* lock cursor */
55+	if (state == MAUS_CURSOR_STATE_LOCKED) {
56+		Mask mask = ButtonPressMask | ButtonReleaseMask | PointerMotionMask;
57+		int grab = XGrabPointer(
58+			dpy, win, True, mask, GrabModeAsync,
59+			GrabModeAsync, win, None, CurrentTime
60+		);
61+
62+		if (grab != GrabSuccess) {
63+			maus_log(stderr, "failed to grab mouse pointer");
64+			return;
65+		}
66+
67+		/* TODO keep position just snap to window dimensions */
68+		XWarpPointer(dpy, None, win, 0, 0, 0, 0, mw->width/2, mw->height/2);
69+		XFlush(dpy);
70+		return;
71+	}
72+
73+	/* unlock cursor */
74+	if (state == MAUS_CURSOR_STATE_FREE) {
75+		XUngrabPointer(dpy, CurrentTime);
76+		XFlush(dpy);
77+		return;
78+	}
79+}
80+

 1@@ -7,7 +7,7 @@
 2 #include <X11/Xlib.h>
 3 #include <X11/extensions/XShm.h>
 4 
 5-#include "maus_keys.h"
 6+#include "maus_input.h"
 7 
 8 #define MAUS_KEYCODE_LAST 256
 9 
10@@ -38,6 +38,8 @@ typedef struct {
11 	bool           key_codes[MAUS_KEYCODE_LAST]; /* physical keys */
12 	bool           key_syms[MAUS_KEY_LAST];      /* logical keys */
13 	MausKey        keymap[MAUS_KEYCODE_LAST];    /* X11 keycode->MausKey */
14+
15+	MausCursor     cursor;
16 } Maus;
17 
18 #endif /* MAUS_X11_H */