xenv: allow to specify event filter

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@949 be3aeb3a-fb24-0410-a615-afba39da0efa

diff --git a/linux/xenv.c b/linux/xenv.c
index a932a1e..40bf92c 100644 (file)
--- a/linux/xenv.c
+++ b/linux/xenv.c
@@ -25,6 +25,8 @@
 #include <termios.h>
 #include <linux/kd.h>
 
+#include "xenv.h"
+
 #define PFX "xenv: "
 
 #define FPTR(f) typeof(f) * p##f
@@ -81,13 +83,14 @@ static Cursor transparent_cursor(struct xstuff *xf, Display *display, Window win
        return cursor;
 }
 
-static int x11h_init(const char *window_title)
+static int x11h_init(int *xenv_flags, const char *window_title)
 {
        unsigned int display_width, display_height;
        Display *display;
        XSetWindowAttributes attributes;
        Window win;
        Visual *visual;
+       long evt_mask;
        void *x11lib;
        int screen;
 
@@ -153,10 +156,14 @@ static int x11h_init(const char *window_title)
        attributes.cursor = transparent_cursor(&g_xstuff, display, win);
        g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes);
 
-       g_xstuff.pXStoreName(display, win, window_title);
-       g_xstuff.pXSelectInput(display, win, ExposureMask | FocusChangeMask
-               | KeyPressMask | KeyReleaseMask | ButtonPressMask
-               | ButtonReleaseMask | PointerMotionMask | PropertyChangeMask);
+       if (window_title != NULL)
+               g_xstuff.pXStoreName(display, win, window_title);
+       evt_mask = ExposureMask | FocusChangeMask | PropertyChangeMask;
+       if (xenv_flags && (*xenv_flags & XENV_CAP_KEYS))
+               evt_mask |= KeyPressMask | KeyReleaseMask;
+       if (xenv_flags && (*xenv_flags & XENV_CAP_MOUSE))
+               evt_mask |= ButtonPressMask | ButtonReleaseMask | PointerMotionMask;
+       g_xstuff.pXSelectInput(display, win, evt_mask);
        g_xstuff.pXMapWindow(display, win);
        g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
        g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
@@ -368,17 +375,16 @@ static void tty_end(void)
        g_kbdfd = -1;
 }
 
-int xenv_init(int *have_mouse_events, const char *window_title)
+int xenv_init(int *xenv_flags, const char *window_title)
 {
-       int have_mouse = 0;
        int ret;
 
-       ret = x11h_init(window_title);
-       if (ret == 0) {
-               have_mouse = 1;
+       ret = x11h_init(xenv_flags, window_title);
+       if (ret == 0)
                goto out;
-       }
 
+       if (xenv_flags != NULL)
+               *xenv_flags &= ~(XENV_CAP_KEYS | XENV_CAP_MOUSE); /* TODO? */
        ret = tty_init();
        if (ret == 0)
                goto out;
@@ -386,8 +392,6 @@ int xenv_init(int *have_mouse_events, const char *window_title)
        fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n");
        ret = -1;
 out:
-       if (have_mouse_events != NULL)
-               *have_mouse_events = have_mouse;
        return ret;
 }
 

diff --git a/linux/xenv.h b/linux/xenv.h
index cd1bc70..005ec0a 100644 (file)
--- a/linux/xenv.h
+++ b/linux/xenv.h
@@ -1,5 +1,10 @@
 
-int  xenv_init(int *have_mouse_events, const char *window_title);
+#define XENV_CAP_KEYS  (1<<0)
+#define XENV_CAP_MOUSE (1<<1)
+
+/* xenv_flags specify if we need keys and mouse,
+ * flag is removed if input is not available */
+int  xenv_init(int *xenv_flags, const char *window_title);
 
 /* read events from X, calling key_cb for key, mouseb_cb for mouse button
  * and mousem_cb for mouse motion events */