diff options
Diffstat (limited to 'common/system.h')
| -rw-r--r-- | common/system.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/common/system.h b/common/system.h index eb9a39bbdf..b07a5ffd1e 100644 --- a/common/system.h +++ b/common/system.h @@ -1102,6 +1102,25 @@ public: virtual void displayMessageOnOSD(const char *msg) = 0; /** + * Display an icon indicating background activity + * + * The icon is displayed in an 'on screen display'. It is visible above + * the regular screen content or near it. + * + * The caller keeps ownership of the icon. It is acceptable to free + * the surface just after the call. + * + * There is no preferred pixel format for the icon. The backend should + * convert its copy of the icon to an appropriate format. + * + * The caller must call this method again with a null pointer + * as a parameter to indicate the icon should no longer be displayed. + * + * @param icon the icon to display on screen + */ + virtual void displayActivityIconOnOSD(const Graphics::Surface *icon) = 0; + + /** * Blit a bitmap to the 'on screen display'. * * If the current pixel format has one byte per pixel, the graphics data |