[vlc-devel] commit: XCB: CreateBlankCursor common helper ( Rémi Denis-Courmont )

[git version control]

vlc | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Wed Oct 28 21:06:14 2009 +0200| [b69562699767589c46a0682f0ada5a7e74d6991f] | committer: Rémi Denis-Courmont 

XCB: CreateBlankCursor common helper

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=b69562699767589c46a0682f0ada5a7e74d6991f
---

 modules/video_output/xcb/common.c  |   32 ++++++++++++++++++++++++++++++++
 modules/video_output/xcb/xcb_vlc.h |    1 +
 2 files changed, 33 insertions(+), 0 deletions(-)

diff --git a/modules/video_output/xcb/common.c b/modules/video_output/xcb/common.c
index 77ddd01..e9e55ac 100644
--- a/modules/video_output/xcb/common.c
+++ b/modules/video_output/xcb/common.c
@@ -200,6 +200,38 @@ int GetWindowSize (struct vout_window_t *wnd, xcb_connection_t *conn,
 }
 
 /**
+ * Create a blank cursor.
+ * Note that the pixmaps are leaked (until the X disconnection). Hence, this
+ * function should be called no more than once per X connection.
+ * @param conn XCB connection
+ * @param scr target XCB screen
+ */
+xcb_cursor_t CreateBlankCursor (xcb_connection_t *conn,
+                                const xcb_screen_t *scr)
+{
+    xcb_cursor_t cur = xcb_generate_id (conn);
+    xcb_pixmap_t pix = xcb_generate_id (conn);
+    xcb_void_cookie_t ck;
+    xcb_generic_error_t *err;
+
+    ck = xcb_create_pixmap_checked (conn, 1, pix, scr->root, 1, 1);
+    err = xcb_request_check (conn, ck);
+    if (err)
+    {
+        fprintf (stderr, "Cannot create pixmap: %d", err->error_code);
+        free (err);
+    }
+    ck = xcb_create_cursor_checked (conn, cur, pix, pix, 0, 0, 0, 0, 0, 0, 0, 0);
+    err = xcb_request_check (conn, ck);
+    if (err)
+    {
+        fprintf (stderr, "Cannot create pixmap: %d", err->error_code);
+        free (err);
+    }
+    return cur;
+}
+
+/**
  * Initialize a picture buffer as shared memory, according to the video output
  * format. If a attach is true, the segment is attached to
  * the X server (MIT-SHM extension).
diff --git a/modules/video_output/xcb/xcb_vlc.h b/modules/video_output/xcb/xcb_vlc.h
index 131c582..cc7f640 100644
--- a/modules/video_output/xcb/xcb_vlc.h
+++ b/modules/video_output/xcb/xcb_vlc.h
@@ -45,6 +45,7 @@ struct vout_window_t *GetWindow (vout_display_t *obj,
                                  bool *restrict pshm);
 int GetWindowSize (struct vout_window_t *wnd, xcb_connection_t *conn,
                    unsigned *restrict width, unsigned *restrict height);
+xcb_cursor_t CreateBlankCursor (xcb_connection_t *, const xcb_screen_t *);
 
 int CheckError (vout_display_t *, xcb_connection_t *conn,
                 const char *str, xcb_void_cookie_t);