Move the check whenever a cursor exists into the vnc_cursor_define()
function so callers don't have to do it.

Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/vnc.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/ui/vnc.c b/ui/vnc.c
index 7452ac7df2ce..84c4972b895b 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -792,9 +792,7 @@ static void vnc_dpy_switch(DisplayChangeListener *dcl,
     QTAILQ_FOREACH(vs, &vd->clients, next) {
         vnc_colordepth(vs);
         vnc_desktop_resize(vs);
-        if (vs->vd->cursor) {
-            vnc_cursor_define(vs);
-        }
+        vnc_cursor_define(vs);
         memset(vs->dirty, 0x00, sizeof(vs->dirty));
         vnc_set_area_dirty(vs->dirty, vd, 0, 0,
                            vnc_width(vd),
@@ -928,6 +926,10 @@ static int vnc_cursor_define(VncState *vs)
     QEMUCursor *c = vs->vd->cursor;
     int isize;
 
+    if (!vs->vd->cursor) {
+        return -1;
+    }
+
     if (vnc_has_feature(vs, VNC_FEATURE_ALPHA_CURSOR)) {
         vnc_lock_output(vs);
         vnc_write_u8(vs,  VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
@@ -2137,9 +2139,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
     vnc_desktop_resize(vs);
     check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
     vnc_led_state_change(vs);
-    if (vs->vd->cursor) {
-        vnc_cursor_define(vs);
-    }
+    vnc_cursor_define(vs);
 }
 
 static void set_pixel_conversion(VncState *vs)
-- 
2.29.2

On Tue, Jan 12, 2021 at 5:41 PM Gerd Hoffmann <kraxel@redhat.com> wrote:

> Move the check whenever a cursor exists into the vnc_cursor_define()
> function so callers don't have to do it.
>
> Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
>

thanks
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

---
>  ui/vnc.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/ui/vnc.c b/ui/vnc.c
> index 7452ac7df2ce..84c4972b895b 100644
> --- a/ui/vnc.c
> +++ b/ui/vnc.c
> @@ -792,9 +792,7 @@ static void vnc_dpy_switch(DisplayChangeListener *dcl,
>      QTAILQ_FOREACH(vs, &vd->clients, next) {
>          vnc_colordepth(vs);
>          vnc_desktop_resize(vs);
> -        if (vs->vd->cursor) {
> -            vnc_cursor_define(vs);
> -        }
> +        vnc_cursor_define(vs);
>          memset(vs->dirty, 0x00, sizeof(vs->dirty));
>          vnc_set_area_dirty(vs->dirty, vd, 0, 0,
>                             vnc_width(vd),
> @@ -928,6 +926,10 @@ static int vnc_cursor_define(VncState *vs)
>      QEMUCursor *c = vs->vd->cursor;
>      int isize;
>
> +    if (!vs->vd->cursor) {
> +        return -1;
> +    }
> +
>      if (vnc_has_feature(vs, VNC_FEATURE_ALPHA_CURSOR)) {
>          vnc_lock_output(vs);
>          vnc_write_u8(vs,  VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> @@ -2137,9 +2139,7 @@ static void set_encodings(VncState *vs, int32_t
> *encodings, size_t n_encodings)
>      vnc_desktop_resize(vs);
>      check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
>      vnc_led_state_change(vs);
> -    if (vs->vd->cursor) {
> -        vnc_cursor_define(vs);
> -    }
> +    vnc_cursor_define(vs);
>  }
>
>  static void set_pixel_conversion(VncState *vs)
> --
> 2.29.2
>
>

On Tue, Jan 12, 2021 at 02:41:18PM +0100, Gerd Hoffmann wrote:
> Move the check whenever a cursor exists into the vnc_cursor_define()
> function so callers don't have to do it.
> 
> Suggested-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  ui/vnc.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

> 
> diff --git a/ui/vnc.c b/ui/vnc.c
> index 7452ac7df2ce..84c4972b895b 100644
> --- a/ui/vnc.c
> +++ b/ui/vnc.c
> @@ -792,9 +792,7 @@ static void vnc_dpy_switch(DisplayChangeListener *dcl,
>      QTAILQ_FOREACH(vs, &vd->clients, next) {
>          vnc_colordepth(vs);
>          vnc_desktop_resize(vs);
> -        if (vs->vd->cursor) {
> -            vnc_cursor_define(vs);
> -        }
> +        vnc_cursor_define(vs);
>          memset(vs->dirty, 0x00, sizeof(vs->dirty));
>          vnc_set_area_dirty(vs->dirty, vd, 0, 0,
>                             vnc_width(vd),
> @@ -928,6 +926,10 @@ static int vnc_cursor_define(VncState *vs)
>      QEMUCursor *c = vs->vd->cursor;
>      int isize;
>  
> +    if (!vs->vd->cursor) {
> +        return -1;
> +    }

None of the callers check the return value, so we could just
make this function void, as a future cleanup patch.

> +
>      if (vnc_has_feature(vs, VNC_FEATURE_ALPHA_CURSOR)) {
>          vnc_lock_output(vs);
>          vnc_write_u8(vs,  VNC_MSG_SERVER_FRAMEBUFFER_UPDATE);
> @@ -2137,9 +2139,7 @@ static void set_encodings(VncState *vs, int32_t *encodings, size_t n_encodings)
>      vnc_desktop_resize(vs);
>      check_pointer_type_change(&vs->mouse_mode_notifier, NULL);
>      vnc_led_state_change(vs);
> -    if (vs->vd->cursor) {
> -        vnc_cursor_define(vs);
> -    }
> +    vnc_cursor_define(vs);
>  }
>  
>  static void set_pixel_conversion(VncState *vs)
> -- 
> 2.29.2
> 
> 

Regards,
Daniel
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