ecore_wayland: Improve API docs
Summary: For calls that return pointers, specify that NULL is a potential return value. Add API documentation for some misc. routines missing it. Reviewers: zmike, cedric, devilhorns Subscribers: cedric Differential Revision: https://phab.enlightenment.org/D2180
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@ -231,8 +231,8 @@ struct _Ecore_Wl_Event_Interfaces_Bound
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* @ingroup Ecore
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* Ecore_Wl provides a wrapper and convenience functions for using the
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* Wayland window system. Function groups for this part of the library
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* include the following:
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* Wayland protocol in implementing a window system. Function groups for
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* this part of the library include the following:
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*
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* @li @ref Ecore_Wl_Init_Group
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* @li @ref Ecore_Wl_Display_Group
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@ -327,7 +327,7 @@ EAPI void ecore_wl_sync(void);
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/**
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* Retrieves the Wayland Shm Interface used for the current Wayland connection.
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*
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* @return The current wayland shm interface
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* @return The current wayland shm interface, or NULL on error
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*
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* @ingroup Ecore_Wl_Display_Group
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* @since 1.2
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@ -337,7 +337,7 @@ EAPI struct wl_shm *ecore_wl_shm_get(void);
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/**
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* Retrieves the Wayland Display Interface used for the current Wayland connection.
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*
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* @return The current wayland display interface
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* @return The current wayland display interface, or NULL on error
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*
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* @ingroup Ecore_Wl_Display_Group
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* @since 1.2
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@ -350,7 +350,7 @@ EAPI struct wl_display *ecore_wl_display_get(void);
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* This interface is used by clients to request the creation of surfaces and
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* regions.
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*
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* @return The current wayland compositor interface
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* @return The current wayland compositor interface, or NULL on error
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* @since 1.8
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*/
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@ -364,6 +364,16 @@ EAPI struct wl_display *ecore_wl_display_get(void);
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* @since 1.2
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*/
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EAPI void ecore_wl_screen_size_get(int *w, int *h);
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/**
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* Retrieves the position of the current screen.
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*
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* @param x where to return the horizontal position. May be NULL. Returns 0 on error.
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* @param y where to return the vertical position. May be NULL. Returns 0 on error.
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*
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* @ingroup Ecore_Wl_Display_Group
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* @since 1.2
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*/
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EAPI void ecore_wl_pointer_xy_get(int *x, int *y);
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/**
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@ -378,6 +388,14 @@ EAPI void ecore_wl_pointer_xy_get(int *x, int *y);
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* @since 1.2
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*/
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EAPI int ecore_wl_dpi_get(void);
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/**
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* Dispatch Wayland events
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*
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* Dispatches any events queued on the default queue. Wayland will attempt
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* to read from the display fd and queue things up according to the proxy
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* assignment.
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*/
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EAPI void ecore_wl_display_iterate(void);
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/*
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@ -436,7 +454,7 @@ EAPI void ecore_wl_input_cursor_theme_name_set(Ecore_Wl_Input *input, const char
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*
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* There's no need to call dispatch manually, since this call will do it if necessary.
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*
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* @return The current wayland globals interface list
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* @return The current wayland globals interface list, or NULL on error
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*
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* @ingroup Ecore_Wl_Display_Group
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* @since 1.7.6
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@ -446,7 +464,7 @@ EAPI Eina_Inlist *ecore_wl_globals_get(void);
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/**
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* Retrieves the Wayland Registry used for the current Wayland connection.
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*
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* @return The current wayland registry
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* @return The current wayland registry, or NULL on error
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*
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* @ingroup Ecore_Wl_Display_Group
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* @since 1.7.6
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@ -471,7 +489,7 @@ EAPI struct wl_registry *ecore_wl_registry_get(void);
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* @param h Height
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* @param buffer_type The type of the buffer to be used to create a new Ecore_Wl_Window.
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*
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* @return The new window
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* @return The new window, or NULL on failure
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*
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* @ingroup Ecore_Wl_Window_Group
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* @since 1.2
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@ -598,6 +616,7 @@ EAPI Ecore_Wl_Input *ecore_wl_window_keyboard_get(Ecore_Wl_Window *win);
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* Returns a wl_surface with no association to any wl_shell_surface.
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*
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* @param win The window which will use this newly created surface.
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* @return wl_surface or NULL on error
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*
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* @ingroup Ecore_Wl_Window_Group
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* @since 1.8
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@ -611,7 +630,7 @@ EAPI Eina_Bool ecore_wl_window_alpha_get(Ecore_Wl_Window *win);
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* Returns the Ecore_Wl_Window from a wl_surface
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*
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* @param surface The surface for which to find the Ecore_Wl_Window from
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* @return the Ecore_Wl_Window associated with this surface
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* @return the Ecore_Wl_Window associated with this surface, or NULL if not found
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*
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* @ingroup Ecore_Wl_Window_Group
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* @since 1.8
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@ -710,24 +729,32 @@ EINA_DEPRECATED EAPI Eina_Bool ecore_wl_dnd_start_drag(Ecore_Wl_Dnd *dnd);
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EINA_DEPRECATED EAPI Eina_Bool ecore_wl_dnd_selection_has_owner(Ecore_Wl_Dnd *dnd);
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/**
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* @return false on error, true otherwise
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*
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* @ingroup Ecore_Wl_Dnd_Group
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* @since 1.8
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*/
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EAPI Eina_Bool ecore_wl_dnd_selection_set(Ecore_Wl_Input *input, const char **types_offered);
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/**
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* @return false if type not found or on error, true otherwise
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*
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* @ingroup Ecore_Wl_Dnd_Group
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* @since 1.8
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*/
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EAPI Eina_Bool ecore_wl_dnd_selection_get(Ecore_Wl_Input *input, const char *type);
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/**
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* @return true if input has a selection source, false otherwise or on error
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*
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* @ingroup Ecore_Wl_Dnd_Group
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* @since 1.8
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*/
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EAPI Eina_Bool ecore_wl_dnd_selection_owner_has(Ecore_Wl_Input *input);
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/**
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* @return false on error, true otherwise
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*
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* @ingroup Ecore_Wl_Dnd_Group
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* @since 1.8
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*/
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@ -746,6 +773,8 @@ EAPI void ecore_wl_dnd_drag_start(Ecore_Wl_Input *input, Ecore_Wl_Window *win, E
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EAPI void ecore_wl_dnd_drag_end(Ecore_Wl_Input *input);
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/**
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* @return false if type not found or on error, true otherwise
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*
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* @ingroup Ecore_Wl_Dnd_Group
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* @since 1.8
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*/
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@ -769,6 +798,13 @@ EAPI struct wl_array *ecore_wl_dnd_drag_types_get(Ecore_Wl_Input *input);
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*/
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/* EAPI Ecore_Wl_Dnd_Source *ecore_wl_dnd_drag_source_create(Ecore_Wl_Dnd *dnd); */
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/**
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* Enable/disable server mode.
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*
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* With this enabled, the compositor acts as a Wayland server, iterating
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* the display and dispatching events. With it disabled, the process is
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* handled as a client.
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*/
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EAPI void ecore_wl_server_mode_set(Eina_Bool on);
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/**
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@ -794,6 +830,9 @@ EAPI void ecore_wl_server_mode_set(Eina_Bool on);
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* The @param win must be visible, otherwise there will be no surface created
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* for it yet.
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*
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* @return the allocated and initialized Ecore_Wl_Subsurf object, or
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* NULL on failure
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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*/
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@ -802,13 +841,18 @@ EAPI Ecore_Wl_Subsurf *ecore_wl_subsurf_create(Ecore_Wl_Window *win);
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/**
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* Destroy the given subsurface, as well as the surface associated with it.
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*
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* @param ess the subsurface
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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*/
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EAPI void ecore_wl_subsurf_del(Ecore_Wl_Subsurf *ess);
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/**
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* Return the wl_surface associated with this subsurface.
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* Get the wl_surface for this subsurface
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*
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* @param ess the subsurface
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* @return the wl_surface associated with this subsurface, or NULL on failure
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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@ -817,6 +861,12 @@ EAPI struct wl_surface *ecore_wl_subsurf_surface_get(Ecore_Wl_Subsurf *ess);
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/**
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* Set the position of this subsurface, relative to its parent surface.
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* If ess is defined and the x, y coordinates differ from the currently
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* tracked position, this also schedules a sub-surface position change.
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*
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* @param ess the subsurface
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* @param x coordinate in the parent surface
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* @param y coordinate in the parent surface
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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@ -825,6 +875,11 @@ EAPI void ecore_wl_subsurf_position_set(Ecore_Wl_Subsurf *ess, int x, int y);
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/**
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* Get the position of this subsurface, relative to its parent surface.
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* Coordinates will be returned in x and y if non-NULL.
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*
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* @param ess the subsurface
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* @param x coordinate in the parent surface, or NULL to ignore
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* @param y coordinate in the parent surface, or NULL to ignore
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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@ -832,18 +887,57 @@ EAPI void ecore_wl_subsurf_position_set(Ecore_Wl_Subsurf *ess, int x, int y);
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EAPI void ecore_wl_subsurf_position_get(Ecore_Wl_Subsurf *ess, int *x, int *y);
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/**
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* Place subsurface on layer above a reference surface
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*
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* Moves the @param ess subsurface to just above the reference @param
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* surface, changing the z-order. The reference @param surface must
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* be either a sibling or parent surface, else a protocol error will
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* be generated.
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*
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* @param ess the subsurface
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* @param surface the sibling reference surface
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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*/
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EAPI void ecore_wl_subsurf_place_above(Ecore_Wl_Subsurf *ess, struct wl_surface *surface);
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/**
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* Place subsurface on layer below a reference surface
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*
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* See ecore_wl_subsurf_place_above.
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*
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* @param ess the subsurface
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* @param surface the sibling reference surface
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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*/
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EAPI void ecore_wl_subsurf_place_below(Ecore_Wl_Subsurf *ess, struct wl_surface *surface);
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/**
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* Enables or disables sub-surface synchronization
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*
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* When synchronization is enabled, surface commits on the subsurface
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* will be cached and only applied when the parent surface's state is
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* applied. This ensures atomic updates of the parent and all of its
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* synchronized sub-surfaces.
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*
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* When synchronization is disabled, commits will apply to the pending
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* state directly without caching, just like a normal wl_surface. If
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* there are already cached events when this is set, those events are
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* applied simultaneously with the desync event.
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*
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* Attempting to enable synchronization when the subsurface already
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* thinks it's sync'd, or desync when it believes its desync'd, will
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* be trivially ignored and will not generate a Wayland event.
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*
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* See Wayland's set_desync documentation for further details and
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* exceptional cases.
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*
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* @param ess the subsurface
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* @param val true to enable synchronization, false to desynchronize
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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*/
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@ -852,8 +946,18 @@ EAPI void ecore_wl_subsurf_sync_set(Ecore_Wl_Subsurf *ess, Eina_Bool val);
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/**
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* Set an opaque region for the given subsurface.
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*
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* This is an optimization hint to the compositor to allow it avoid
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* redrawing content unnecessarily. Note that marking transparent
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* content as opaque will cause repaint artifacts.
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*
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* Use a 0x0 region size to unset the opaque region.
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*
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* @param ess the subsurface
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* @param x coordinate in the parent surface
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* @param y coordinate in the parent surface
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* @param w width to set as opaque
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* @param h height to set as opaque
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*
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* @ingroup Ecore_Wl_Subsurf
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* @since 1.8
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*/
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