- /**
- *
- * @defgroup Transit Transit
- * @ingroup Elementary
- *
- * Transit is designed to apply various animated transition effects to @c
- * Evas_Object, such like translation, rotation, etc. For using these
- * effects, create an @ref Elm_Transit and add the desired transition effects.
- *
- * Once the effects are added into transit, they will be automatically
- * managed (their callback will be called until the duration is ended, and
- * they will be deleted on completion).
- *
- * Example:
- * @code
- * Elm_Transit *trans = elm_transit_add();
- * elm_transit_object_add(trans, obj);
- * elm_transit_effect_translation_add(trans, 0, 0, 280, 280
- * elm_transit_duration_set(transit, 1);
- * elm_transit_auto_reverse_set(transit, EINA_TRUE);
- * elm_transit_tween_mode_set(transit, ELM_TRANSIT_TWEEN_MODE_DECELERATE);
- * elm_transit_repeat_times_set(transit, 3);
- * @endcode
- *
- * Some transition effects are used to change the properties of objects. They
- * are:
- * @li @ref elm_transit_effect_translation_add
- * @li @ref elm_transit_effect_color_add
- * @li @ref elm_transit_effect_rotation_add
- * @li @ref elm_transit_effect_wipe_add
- * @li @ref elm_transit_effect_zoom_add
- * @li @ref elm_transit_effect_resizing_add
- *
- * Other transition effects are used to make one object disappear and another
- * object appear on its old place. These effects are:
- *
- * @li @ref elm_transit_effect_flip_add
- * @li @ref elm_transit_effect_resizable_flip_add
- * @li @ref elm_transit_effect_fade_add
- * @li @ref elm_transit_effect_blend_add
- *
- * It's also possible to make a transition chain with @ref
- * elm_transit_chain_transit_add.
- *
- * @warning We strongly recommend to use elm_transit just when edje can not do
- * the trick. Edje has more advantage than Elm_Transit, it has more flexibility and
- * animations can be manipulated inside the theme.
- *
- * List of examples:
- * @li @ref transit_example_01_explained
- * @li @ref transit_example_02_explained
- * @li @ref transit_example_03_c
- * @li @ref transit_example_04_c
- *
- * @{
- */
-
- /**
- * @enum Elm_Transit_Tween_Mode
- *
- * The type of acceleration used in the transition.
- */
- typedef enum
- {
- ELM_TRANSIT_TWEEN_MODE_LINEAR, /**< Constant speed */
- ELM_TRANSIT_TWEEN_MODE_SINUSOIDAL, /**< Starts slow, increase speed
- over time, then decrease again
- and stop slowly */
- ELM_TRANSIT_TWEEN_MODE_DECELERATE, /**< Starts fast and decrease
- speed over time */
- ELM_TRANSIT_TWEEN_MODE_ACCELERATE /**< Starts slow and increase speed
- over time */
- } Elm_Transit_Tween_Mode;
-
- /**
- * @enum Elm_Transit_Effect_Flip_Axis
- *
- * The axis where flip effect should be applied.
- */
- typedef enum
- {
- ELM_TRANSIT_EFFECT_FLIP_AXIS_X, /**< Flip on X axis */
- ELM_TRANSIT_EFFECT_FLIP_AXIS_Y /**< Flip on Y axis */
- } Elm_Transit_Effect_Flip_Axis;
-
- /**
- * @enum Elm_Transit_Effect_Wipe_Dir
- *
- * The direction where the wipe effect should occur.
- */
- typedef enum
- {
- ELM_TRANSIT_EFFECT_WIPE_DIR_LEFT, /**< Wipe to the left */
- ELM_TRANSIT_EFFECT_WIPE_DIR_RIGHT, /**< Wipe to the right */
- ELM_TRANSIT_EFFECT_WIPE_DIR_UP, /**< Wipe up */
- ELM_TRANSIT_EFFECT_WIPE_DIR_DOWN /**< Wipe down */
- } Elm_Transit_Effect_Wipe_Dir;
-
- /** @enum Elm_Transit_Effect_Wipe_Type
- *
- * Whether the wipe effect should show or hide the object.
- */
- typedef enum
- {
- ELM_TRANSIT_EFFECT_WIPE_TYPE_HIDE, /**< Hide the object during the
- animation */
- ELM_TRANSIT_EFFECT_WIPE_TYPE_SHOW /**< Show the object during the
- animation */
- } Elm_Transit_Effect_Wipe_Type;
-
- /**
- * @typedef Elm_Transit
- *
- * The Transit created with elm_transit_add(). This type has the information
- * about the objects which the transition will be applied, and the
- * transition effects that will be used. It also contains info about
- * duration, number of repetitions, auto-reverse, etc.
- */
- typedef struct _Elm_Transit Elm_Transit;
- typedef void Elm_Transit_Effect;
-
- /**
- * @typedef Elm_Transit_Effect_Transition_Cb
- *
- * Transition callback called for this effect on each transition iteration.
- */
- typedef void (*Elm_Transit_Effect_Transition_Cb) (Elm_Transit_Effect *effect, Elm_Transit *transit, double progress);
-
- /**
- * Elm_Transit_Effect_End_Cb
- *
- * Transition callback called for this effect when the transition is over.
- */
- typedef void (*Elm_Transit_Effect_End_Cb) (Elm_Transit_Effect *effect, Elm_Transit *transit);
-
- /**
- * Elm_Transit_Del_Cb
- *
- * A callback called when the transit is deleted.
- */
- typedef void (*Elm_Transit_Del_Cb) (void *data, Elm_Transit *transit);
-
- /**
- * Add new transit.
- *
- * @note Is not necessary to delete the transit object, it will be deleted at
- * the end of its operation.
- * @note The transit will start playing when the program enter in the main loop, is not
- * necessary to give a start to the transit.
- *
- * @return The transit object.
- *
- * @ingroup Transit
- */
- EAPI Elm_Transit *elm_transit_add(void);
-
- /**
- * Stops the animation and delete the @p transit object.
- *
- * Call this function if you wants to stop the animation before the duration
- * time. Make sure the @p transit object is still alive with
- * elm_transit_del_cb_set() function.
- * All added effects will be deleted, calling its repective data_free_cb
- * functions. The function setted by elm_transit_del_cb_set() will be called.
- *
- * @see elm_transit_del_cb_set()
- *
- * @param transit The transit object to be deleted.
- *
- * @ingroup Transit
- * @warning Just call this function if you are sure the transit is alive.
- */
- EAPI void elm_transit_del(Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Add a new effect to the transit.
- *
- * @note The cb function and the data are the key to the effect. If you try to
- * add an already added effect, nothing is done.
- * @note After the first addition of an effect in @p transit, if its
- * effect list become empty again, the @p transit will be killed by
- * elm_transit_del(transit) function.
- *
- * Exemple:
- * @code
- * Elm_Transit *transit = elm_transit_add();
- * elm_transit_effect_add(transit,
- * elm_transit_effect_blend_op,
- * elm_transit_effect_blend_context_new(),
- * elm_transit_effect_blend_context_free);
- * @endcode
- *
- * @param transit The transit object.
- * @param transition_cb The operation function. It is called when the
- * animation begins, it is the function that actually performs the animation.
- * It is called with the @p data, @p transit and the time progression of the
- * animation (a double value between 0.0 and 1.0).
- * @param effect The context data of the effect.
- * @param end_cb The function to free the context data, it will be called
- * at the end of the effect, it must finalize the animation and free the
- * @p data.
- *
- * @ingroup Transit
- * @warning The transit free the context data at the and of the transition with
- * the data_free_cb function, do not use the context data in another transit.
- */
- EAPI void elm_transit_effect_add(Elm_Transit *transit, Elm_Transit_Effect_Transition_Cb transition_cb, Elm_Transit_Effect *effect, Elm_Transit_Effect_End_Cb end_cb) EINA_ARG_NONNULL(1, 2);
-
- /**
- * Delete an added effect.
- *
- * This function will remove the effect from the @p transit, calling the
- * data_free_cb to free the @p data.
- *
- * @see elm_transit_effect_add()
- *
- * @note If the effect is not found, nothing is done.
- * @note If the effect list become empty, this function will call
- * elm_transit_del(transit), that is, it will kill the @p transit.
- *
- * @param transit The transit object.
- * @param transition_cb The operation function.
- * @param effect The context data of the effect.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_effect_del(Elm_Transit *transit, Elm_Transit_Effect_Transition_Cb transition_cb, Elm_Transit_Effect *effect) EINA_ARG_NONNULL(1, 2);
-
- /**
- * Add new object to apply the effects.
- *
- * @note After the first addition of an object in @p transit, if its
- * object list become empty again, the @p transit will be killed by
- * elm_transit_del(transit) function.
- * @note If the @p obj belongs to another transit, the @p obj will be
- * removed from it and it will only belong to the @p transit. If the old
- * transit stays without objects, it will die.
- * @note When you add an object into the @p transit, its state from
- * evas_object_pass_events_get(obj) is saved, and it is applied when the
- * transit ends, if you change this state whith evas_object_pass_events_set()
- * after add the object, this state will change again when @p transit stops to
- * run.
- *
- * @param transit The transit object.
- * @param obj Object to be animated.
- *
- * @ingroup Transit
- * @warning It is not allowed to add a new object after transit begins to go.
- */
- EAPI void elm_transit_object_add(Elm_Transit *transit, Evas_Object *obj) EINA_ARG_NONNULL(1, 2);
-
- /**
- * Removes an added object from the transit.
- *
- * @note If the @p obj is not in the @p transit, nothing is done.
- * @note If the list become empty, this function will call
- * elm_transit_del(transit), that is, it will kill the @p transit.
- *
- * @param transit The transit object.
- * @param obj Object to be removed from @p transit.
- *
- * @ingroup Transit
- * @warning It is not allowed to remove objects after transit begins to go.
- */
- EAPI void elm_transit_object_remove(Elm_Transit *transit, Evas_Object *obj) EINA_ARG_NONNULL(1, 2);
-
- /**
- * Get the objects of the transit.
- *
- * @param transit The transit object.
- * @return a Eina_List with the objects from the transit.
- *
- * @ingroup Transit
- */
- EAPI const Eina_List *elm_transit_objects_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Enable/disable keeping up the objects states.
- * If it is not kept, the objects states will be reset when transition ends.
- *
- * @note @p transit can not be NULL.
- * @note One state includes geometry, color, map data.
- *
- * @param transit The transit object.
- * @param state_keep Keeping or Non Keeping.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_objects_final_state_keep_set(Elm_Transit *transit, Eina_Bool state_keep) EINA_ARG_NONNULL(1);
-
- /**
- * Get a value whether the objects states will be reset or not.
- *
- * @note @p transit can not be NULL
- *
- * @see elm_transit_objects_final_state_keep_set()
- *
- * @param transit The transit object.
- * @return EINA_TRUE means the states of the objects will be reset.
- * If @p transit is NULL, EINA_FALSE is returned
- *
- * @ingroup Transit
- */
- EAPI Eina_Bool elm_transit_objects_final_state_keep_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Set the event enabled when transit is operating.
- *
- * If @p enabled is EINA_TRUE, the objects of the transit will receives
- * events from mouse and keyboard during the animation.
- * @note When you add an object with elm_transit_object_add(), its state from
- * evas_object_pass_events_get(obj) is saved, and it is applied when the
- * transit ends, if you change this state with evas_object_pass_events_set()
- * after adding the object, this state will change again when @p transit stops
- * to run.
- *
- * @param transit The transit object.
- * @param enabled Events are received when enabled is @c EINA_TRUE, and
- * ignored otherwise.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_event_enabled_set(Elm_Transit *transit, Eina_Bool enabled) EINA_ARG_NONNULL(1);
-
- /**
- * Get the value of event enabled status.
- *
- * @see elm_transit_event_enabled_set()
- *
- * @param transit The Transit object
- * @return EINA_TRUE, when event is enabled. If @p transit is NULL
- * EINA_FALSE is returned
- *
- * @ingroup Transit
- */
- EAPI Eina_Bool elm_transit_event_enabled_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Set the user-callback function when the transit is deleted.
- *
- * @note Using this function twice will overwrite the first function setted.
- * @note the @p transit object will be deleted after call @p cb function.
- *
- * @param transit The transit object.
- * @param cb Callback function pointer. This function will be called before
- * the deletion of the transit.
- * @param data Callback funtion user data. It is the @p op parameter.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_del_cb_set(Elm_Transit *transit, Elm_Transit_Del_Cb cb, void *data) EINA_ARG_NONNULL(1);
-
- /**
- * Set reverse effect automatically.
- *
- * If auto reverse is setted, after running the effects with the progress
- * parameter from 0 to 1, it will call the effecs again with the progress
- * from 1 to 0. The transit will last for a time iqual to (2 * duration * repeat),
- * where the duration was setted with the function elm_transit_add and
- * the repeat with the function elm_transit_repeat_times_set().
- *
- * @param transit The transit object.
- * @param reverse EINA_TRUE means the auto_reverse is on.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_auto_reverse_set(Elm_Transit *transit, Eina_Bool reverse) EINA_ARG_NONNULL(1);
-
- /**
- * Get if the auto reverse is on.
- *
- * @see elm_transit_auto_reverse_set()
- *
- * @param transit The transit object.
- * @return EINA_TRUE means auto reverse is on. If @p transit is NULL
- * EINA_FALSE is returned
- *
- * @ingroup Transit
- */
- EAPI Eina_Bool elm_transit_auto_reverse_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Set the transit repeat count. Effect will be repeated by repeat count.
- *
- * This function sets the number of repetition the transit will run after
- * the first one, that is, if @p repeat is 1, the transit will run 2 times.
- * If the @p repeat is a negative number, it will repeat infinite times.
- *
- * @note If this function is called during the transit execution, the transit
- * will run @p repeat times, ignoring the times it already performed.
- *
- * @param transit The transit object
- * @param repeat Repeat count
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_repeat_times_set(Elm_Transit *transit, int repeat) EINA_ARG_NONNULL(1);
-
- /**
- * Get the transit repeat count.
- *
- * @see elm_transit_repeat_times_set()
- *
- * @param transit The Transit object.
- * @return The repeat count. If @p transit is NULL
- * 0 is returned
- *
- * @ingroup Transit
- */
- EAPI int elm_transit_repeat_times_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Set the transit animation acceleration type.
- *
- * This function sets the tween mode of the transit that can be:
- * ELM_TRANSIT_TWEEN_MODE_LINEAR - The default mode.
- * ELM_TRANSIT_TWEEN_MODE_SINUSOIDAL - Starts in accelerate mode and ends decelerating.
- * ELM_TRANSIT_TWEEN_MODE_DECELERATE - The animation will be slowed over time.
- * ELM_TRANSIT_TWEEN_MODE_ACCELERATE - The animation will accelerate over time.
- *
- * @param transit The transit object.
- * @param tween_mode The tween type.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_tween_mode_set(Elm_Transit *transit, Elm_Transit_Tween_Mode tween_mode) EINA_ARG_NONNULL(1);
-
- /**
- * Get the transit animation acceleration type.
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- * @return The tween type. If @p transit is NULL
- * ELM_TRANSIT_TWEEN_MODE_LINEAR is returned.
- *
- * @ingroup Transit
- */
- EAPI Elm_Transit_Tween_Mode elm_transit_tween_mode_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Set the transit animation time
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- * @param duration The animation time.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_duration_set(Elm_Transit *transit, double duration) EINA_ARG_NONNULL(1);
-
- /**
- * Get the transit animation time
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- *
- * @return The transit animation time.
- *
- * @ingroup Transit
- */
- EAPI double elm_transit_duration_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Starts the transition.
- * Once this API is called, the transit begins to measure the time.
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_go(Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Pause/Resume the transition.
- *
- * If you call elm_transit_go again, the transit will be started from the
- * beginning, and will be unpaused.
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- * @param paused Whether the transition should be paused or not.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_paused_set(Elm_Transit *transit, Eina_Bool paused) EINA_ARG_NONNULL(1);
-
- /**
- * Get the value of paused status.
- *
- * @see elm_transit_paused_set()
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- * @return EINA_TRUE means transition is paused. If @p transit is NULL
- * EINA_FALSE is returned
- *
- * @ingroup Transit
- */
- EAPI Eina_Bool elm_transit_paused_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Get the time progression of the animation (a double value between 0.0 and 1.0).
- *
- * The value returned is a fraction (current time / total time). It
- * represents the progression position relative to the total.
- *
- * @note @p transit can not be NULL
- *
- * @param transit The transit object.
- *
- * @return The time progression value. If @p transit is NULL
- * 0 is returned
- *
- * @ingroup Transit
- */
- EAPI double elm_transit_progress_value_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
-
- /**
- * Makes the chain relationship between two transits.
- *
- * @note @p transit can not be NULL. Transit would have multiple chain transits.
- * @note @p chain_transit can not be NULL. Chain transits could be chained to the only one transit.
- *
- * @param transit The transit object.
- * @param chain_transit The chain transit object. This transit will be operated
- * after transit is done.
- *
- * This function adds @p chain_transit transition to a chain after the @p
- * transit, and will be started as soon as @p transit ends. See @ref
- * transit_example_02_explained for a full example.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_chain_transit_add(Elm_Transit *transit, Elm_Transit *chain_transit) EINA_ARG_NONNULL(1, 2);
-
- /**
- * Cut off the chain relationship between two transits.
- *
- * @note @p transit can not be NULL. Transit would have the chain relationship with @p chain transit.
- * @note @p chain_transit can not be NULL. Chain transits should be chained to the @p transit.
- *
- * @param transit The transit object.
- * @param chain_transit The chain transit object.
- *
- * This function remove the @p chain_transit transition from the @p transit.
- *
- * @ingroup Transit
- */
- EAPI void elm_transit_chain_transit_del(Elm_Transit *transit, Elm_Transit *chain_transit) EINA_ARG_NONNULL(1,2);
-
- /**
- * Get the current chain transit list.
- *
- * @note @p transit can not be NULL.
- *
- * @param transit The transit object.
- * @return chain transit list.
- *
- * @ingroup Transit
- */
- EAPI Eina_List *elm_transit_chain_transits_get(const Elm_Transit *transit);
-
- /**
- * Add the Resizing Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates resizing effect context
- * and add it's required APIs to elm_transit_effect_add.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param from_w Object width size when effect begins.
- * @param from_h Object height size when effect begins.
- * @param to_w Object width size when effect ends.
- * @param to_h Object height size when effect ends.
- * @return Resizing effect context data.
- *
- * @ingroup Transit
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_resizing_add(Elm_Transit* transit, Evas_Coord from_w, Evas_Coord from_h, Evas_Coord to_w, Evas_Coord to_h);
-
- /**
- * Add the Translation Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates translation effect context
- * and add it's required APIs to elm_transit_effect_add.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param from_dx X Position variation when effect begins.
- * @param from_dy Y Position variation when effect begins.
- * @param to_dx X Position variation when effect ends.
- * @param to_dy Y Position variation when effect ends.
- * @return Translation effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the geometry information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_translation_add(Elm_Transit* transit, Evas_Coord from_dx, Evas_Coord from_dy, Evas_Coord to_dx, Evas_Coord to_dy);
-
- /**
- * Add the Zoom Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates zoom effect context
- * and add it's required APIs to elm_transit_effect_add.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param from_rate Scale rate when effect begins (1 is current rate).
- * @param to_rate Scale rate when effect ends.
- * @return Zoom effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the geometry information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_zoom_add(Elm_Transit *transit, float from_rate, float to_rate);
-
- /**
- * Add the Flip Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates flip effect context
- * and add it's required APIs to elm_transit_effect_add.
- * @note This effect is applied to each pair of objects in the order they are listed
- * in the transit list of objects. The first object in the pair will be the
- * "front" object and the second will be the "back" object.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param axis Flipping Axis(X or Y).
- * @param cw Flipping Direction. EINA_TRUE is clock-wise.
- * @return Flip effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the geometry information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_flip_add(Elm_Transit *transit, Elm_Transit_Effect_Flip_Axis axis, Eina_Bool cw);
-
- /**
- * Add the Resizable Flip Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates resizable flip effect context
- * and add it's required APIs to elm_transit_effect_add.
- * @note This effect is applied to each pair of objects in the order they are listed
- * in the transit list of objects. The first object in the pair will be the
- * "front" object and the second will be the "back" object.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param axis Flipping Axis(X or Y).
- * @param cw Flipping Direction. EINA_TRUE is clock-wise.
- * @return Resizable flip effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the geometry information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_resizable_flip_add(Elm_Transit *transit, Elm_Transit_Effect_Flip_Axis axis, Eina_Bool cw);
-
- /**
- * Add the Wipe Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates wipe effect context
- * and add it's required APIs to elm_transit_effect_add.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param type Wipe type. Hide or show.
- * @param dir Wipe Direction.
- * @return Wipe effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the geometry information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_wipe_add(Elm_Transit *transit, Elm_Transit_Effect_Wipe_Type type, Elm_Transit_Effect_Wipe_Dir dir);
-
- /**
- * Add the Color Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates color effect context
- * and add it's required APIs to elm_transit_effect_add.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param from_r RGB R when effect begins.
- * @param from_g RGB G when effect begins.
- * @param from_b RGB B when effect begins.
- * @param from_a RGB A when effect begins.
- * @param to_r RGB R when effect ends.
- * @param to_g RGB G when effect ends.
- * @param to_b RGB B when effect ends.
- * @param to_a RGB A when effect ends.
- * @return Color effect context data.
- *
- * @ingroup Transit
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_color_add(Elm_Transit *transit, unsigned int from_r, unsigned int from_g, unsigned int from_b, unsigned int from_a, unsigned int to_r, unsigned int to_g, unsigned int to_b, unsigned int to_a);
-
- /**
- * Add the Fade Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates fade effect context
- * and add it's required APIs to elm_transit_effect_add.
- * @note This effect is applied to each pair of objects in the order they are listed
- * in the transit list of objects. The first object in the pair will be the
- * "before" object and the second will be the "after" object.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @return Fade effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the color information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_fade_add(Elm_Transit *transit);
-
- /**
- * Add the Blend Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates blend effect context
- * and add it's required APIs to elm_transit_effect_add.
- * @note This effect is applied to each pair of objects in the order they are listed
- * in the transit list of objects. The first object in the pair will be the
- * "before" object and the second will be the "after" object.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @return Blend effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the color information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_blend_add(Elm_Transit *transit);
-
- /**
- * Add the Rotation Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates rotation effect context
- * and add it's required APIs to elm_transit_effect_add.
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param from_degree Degree when effect begins.
- * @param to_degree Degree when effect is ends.
- * @return Rotation effect context data.
- *
- * @ingroup Transit
- * @warning It is highly recommended just create a transit with this effect when
- * the window that the objects of the transit belongs has already been created.
- * This is because this effect needs the geometry information about the objects,
- * and if the window was not created yet, it can get a wrong information.
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_rotation_add(Elm_Transit *transit, float from_degree, float to_degree);
-
- /**
- * Add the ImageAnimation Effect to Elm_Transit.
- *
- * @note This API is one of the facades. It creates image animation effect context
- * and add it's required APIs to elm_transit_effect_add.
- * The @p images parameter is a list images paths. This list and
- * its contents will be deleted at the end of the effect by
- * elm_transit_effect_image_animation_context_free() function.
- *
- * Example:
- * @code
- * char buf[PATH_MAX];
- * Eina_List *images = NULL;
- * Elm_Transit *transi = elm_transit_add();
- *
- * snprintf(buf, sizeof(buf), "%s/images/icon_11.png", PACKAGE_DATA_DIR);
- * images = eina_list_append(images, eina_stringshare_add(buf));
- *
- * snprintf(buf, sizeof(buf), "%s/images/logo_small.png", PACKAGE_DATA_DIR);
- * images = eina_list_append(images, eina_stringshare_add(buf));
- * elm_transit_effect_image_animation_add(transi, images);
- *
- * @endcode
- *
- * @see elm_transit_effect_add()
- *
- * @param transit Transit object.
- * @param images Eina_List of images file paths. This list and
- * its contents will be deleted at the end of the effect by
- * elm_transit_effect_image_animation_context_free() function.
- * @return Image Animation effect context data.
- *
- * @ingroup Transit
- */
- EAPI Elm_Transit_Effect *elm_transit_effect_image_animation_add(Elm_Transit *transit, Eina_List *images);
- /**
- * @}
- */
-
+/**
+ *
+ * @defgroup Transit Transit
+ * @ingroup Elementary
+ *
+ * Transit is designed to apply various animated transition effects to @c
+ * Evas_Object, such like translation, rotation, etc. For using these
+ * effects, create an @ref Elm_Transit and add the desired transition effects.
+ *
+ * Once the effects are added into transit, they will be automatically
+ * managed (their callback will be called until the duration is ended, and
+ * they will be deleted on completion).
+ *
+ * Example:
+ * @code
+ * Elm_Transit *trans = elm_transit_add();
+ * elm_transit_object_add(trans, obj);
+ * elm_transit_effect_translation_add(trans, 0, 0, 280, 280
+ * elm_transit_duration_set(transit, 1);
+ * elm_transit_auto_reverse_set(transit, EINA_TRUE);
+ * elm_transit_tween_mode_set(transit, ELM_TRANSIT_TWEEN_MODE_DECELERATE);
+ * elm_transit_repeat_times_set(transit, 3);
+ * @endcode
+ *
+ * Some transition effects are used to change the properties of objects. They
+ * are:
+ * @li @ref elm_transit_effect_translation_add
+ * @li @ref elm_transit_effect_color_add
+ * @li @ref elm_transit_effect_rotation_add
+ * @li @ref elm_transit_effect_wipe_add
+ * @li @ref elm_transit_effect_zoom_add
+ * @li @ref elm_transit_effect_resizing_add
+ *
+ * Other transition effects are used to make one object disappear and another
+ * object appear on its old place. These effects are:
+ *
+ * @li @ref elm_transit_effect_flip_add
+ * @li @ref elm_transit_effect_resizable_flip_add
+ * @li @ref elm_transit_effect_fade_add
+ * @li @ref elm_transit_effect_blend_add
+ *
+ * It's also possible to make a transition chain with @ref
+ * elm_transit_chain_transit_add.
+ *
+ * @warning We strongly recommend to use elm_transit just when edje can not do
+ * the trick. Edje has more advantage than Elm_Transit, it has more flexibility and
+ * animations can be manipulated inside the theme.
+ *
+ * List of examples:
+ * @li @ref transit_example_01_explained
+ * @li @ref transit_example_02_explained
+ * @li @ref transit_example_03_c
+ * @li @ref transit_example_04_c
+ *
+ * @{
+ */
+
+/**
+ * @enum Elm_Transit_Tween_Mode
+ *
+ * The type of acceleration used in the transition.
+ */
+typedef enum
+{
+ ELM_TRANSIT_TWEEN_MODE_LINEAR, /**< Constant speed */
+ ELM_TRANSIT_TWEEN_MODE_SINUSOIDAL, /**< Starts slow, increase speed
+ over time, then decrease again
+ and stop slowly */
+ ELM_TRANSIT_TWEEN_MODE_DECELERATE, /**< Starts fast and decrease
+ speed over time */
+ ELM_TRANSIT_TWEEN_MODE_ACCELERATE /**< Starts slow and increase speed
+ over time */
+} Elm_Transit_Tween_Mode;
+
+/**
+ * @enum Elm_Transit_Effect_Flip_Axis
+ *
+ * The axis where flip effect should be applied.
+ */
+typedef enum
+{
+ ELM_TRANSIT_EFFECT_FLIP_AXIS_X, /**< Flip on X axis */
+ ELM_TRANSIT_EFFECT_FLIP_AXIS_Y /**< Flip on Y axis */
+} Elm_Transit_Effect_Flip_Axis;
+
+/**
+ * @enum Elm_Transit_Effect_Wipe_Dir
+ *
+ * The direction where the wipe effect should occur.
+ */
+typedef enum
+{
+ ELM_TRANSIT_EFFECT_WIPE_DIR_LEFT, /**< Wipe to the left */
+ ELM_TRANSIT_EFFECT_WIPE_DIR_RIGHT, /**< Wipe to the right */
+ ELM_TRANSIT_EFFECT_WIPE_DIR_UP, /**< Wipe up */
+ ELM_TRANSIT_EFFECT_WIPE_DIR_DOWN /**< Wipe down */
+} Elm_Transit_Effect_Wipe_Dir;
+
+/** @enum Elm_Transit_Effect_Wipe_Type
+ *
+ * Whether the wipe effect should show or hide the object.
+ */
+typedef enum
+{
+ ELM_TRANSIT_EFFECT_WIPE_TYPE_HIDE, /**< Hide the object during the
+ animation */
+ ELM_TRANSIT_EFFECT_WIPE_TYPE_SHOW /**< Show the object during the
+ animation */
+} Elm_Transit_Effect_Wipe_Type;
+
+/**
+ * @typedef Elm_Transit
+ *
+ * The Transit created with elm_transit_add(). This type has the information
+ * about the objects which the transition will be applied, and the
+ * transition effects that will be used. It also contains info about
+ * duration, number of repetitions, auto-reverse, etc.
+ */
+typedef struct _Elm_Transit Elm_Transit;
+typedef void Elm_Transit_Effect;
+
+/**
+ * @typedef Elm_Transit_Effect_Transition_Cb
+ *
+ * Transition callback called for this effect on each transition iteration.
+ */
+typedef void (*Elm_Transit_Effect_Transition_Cb)(Elm_Transit_Effect *effect, Elm_Transit *transit, double progress);
+
+/**
+ * Elm_Transit_Effect_End_Cb
+ *
+ * Transition callback called for this effect when the transition is over.
+ */
+typedef void (*Elm_Transit_Effect_End_Cb)(Elm_Transit_Effect *effect, Elm_Transit *transit);
+
+/**
+ * Elm_Transit_Del_Cb
+ *
+ * A callback called when the transit is deleted.
+ */
+typedef void (*Elm_Transit_Del_Cb)(void *data, Elm_Transit *transit);
+
+/**
+ * Add new transit.
+ *
+ * @note Is not necessary to delete the transit object, it will be deleted at
+ * the end of its operation.
+ * @note The transit will start playing when the program enter in the main loop, is not
+ * necessary to give a start to the transit.
+ *
+ * @return The transit object.
+ *
+ * @ingroup Transit
+ */
+EAPI Elm_Transit *elm_transit_add(void);
+
+/**
+ * Stops the animation and delete the @p transit object.
+ *
+ * Call this function if you wants to stop the animation before the duration
+ * time. Make sure the @p transit object is still alive with
+ * elm_transit_del_cb_set() function.
+ * All added effects will be deleted, calling its repective data_free_cb
+ * functions. The function setted by elm_transit_del_cb_set() will be called.
+ *
+ * @see elm_transit_del_cb_set()
+ *
+ * @param transit The transit object to be deleted.
+ *
+ * @ingroup Transit
+ * @warning Just call this function if you are sure the transit is alive.
+ */
+EAPI void
+ elm_transit_del(Elm_Transit *transit)
+EINA_ARG_NONNULL(1);
+
+/**
+ * Add a new effect to the transit.
+ *
+ * @note The cb function and the data are the key to the effect. If you try to
+ * add an already added effect, nothing is done.
+ * @note After the first addition of an effect in @p transit, if its
+ * effect list become empty again, the @p transit will be killed by
+ * elm_transit_del(transit) function.
+ *
+ * Exemple:
+ * @code
+ * Elm_Transit *transit = elm_transit_add();
+ * elm_transit_effect_add(transit,
+ * elm_transit_effect_blend_op,
+ * elm_transit_effect_blend_context_new(),
+ * elm_transit_effect_blend_context_free);
+ * @endcode
+ *
+ * @param transit The transit object.
+ * @param transition_cb The operation function. It is called when the
+ * animation begins, it is the function that actually performs the animation.
+ * It is called with the @p data, @p transit and the time progression of the
+ * animation (a double value between 0.0 and 1.0).
+ * @param effect The context data of the effect.
+ * @param end_cb The function to free the context data, it will be called
+ * at the end of the effect, it must finalize the animation and free the
+ * @p data.
+ *
+ * @ingroup Transit
+ * @warning The transit free the context data at the and of the transition with
+ * the data_free_cb function, do not use the context data in another transit.
+ */
+EAPI void elm_transit_effect_add(Elm_Transit *transit, Elm_Transit_Effect_Transition_Cb transition_cb, Elm_Transit_Effect *effect, Elm_Transit_Effect_End_Cb end_cb) EINA_ARG_NONNULL(1, 2);
+
+/**
+ * Delete an added effect.
+ *
+ * This function will remove the effect from the @p transit, calling the
+ * data_free_cb to free the @p data.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @note If the effect is not found, nothing is done.
+ * @note If the effect list become empty, this function will call
+ * elm_transit_del(transit), that is, it will kill the @p transit.
+ *
+ * @param transit The transit object.
+ * @param transition_cb The operation function.
+ * @param effect The context data of the effect.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_effect_del(Elm_Transit *transit, Elm_Transit_Effect_Transition_Cb transition_cb, Elm_Transit_Effect *effect) EINA_ARG_NONNULL(1, 2);
+
+/**
+ * Add new object to apply the effects.
+ *
+ * @note After the first addition of an object in @p transit, if its
+ * object list become empty again, the @p transit will be killed by
+ * elm_transit_del(transit) function.
+ * @note If the @p obj belongs to another transit, the @p obj will be
+ * removed from it and it will only belong to the @p transit. If the old
+ * transit stays without objects, it will die.
+ * @note When you add an object into the @p transit, its state from
+ * evas_object_pass_events_get(obj) is saved, and it is applied when the
+ * transit ends, if you change this state whith evas_object_pass_events_set()
+ * after add the object, this state will change again when @p transit stops to
+ * run.
+ *
+ * @param transit The transit object.
+ * @param obj Object to be animated.
+ *
+ * @ingroup Transit
+ * @warning It is not allowed to add a new object after transit begins to go.
+ */
+EAPI void elm_transit_object_add(Elm_Transit *transit, Evas_Object *obj) EINA_ARG_NONNULL(1, 2);
+
+/**
+ * Removes an added object from the transit.
+ *
+ * @note If the @p obj is not in the @p transit, nothing is done.
+ * @note If the list become empty, this function will call
+ * elm_transit_del(transit), that is, it will kill the @p transit.
+ *
+ * @param transit The transit object.
+ * @param obj Object to be removed from @p transit.
+ *
+ * @ingroup Transit
+ * @warning It is not allowed to remove objects after transit begins to go.
+ */
+EAPI void elm_transit_object_remove(Elm_Transit *transit, Evas_Object *obj) EINA_ARG_NONNULL(1, 2);
+
+/**
+ * Get the objects of the transit.
+ *
+ * @param transit The transit object.
+ * @return a Eina_List with the objects from the transit.
+ *
+ * @ingroup Transit
+ */
+EAPI const Eina_List *elm_transit_objects_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Enable/disable keeping up the objects states.
+ * If it is not kept, the objects states will be reset when transition ends.
+ *
+ * @note @p transit can not be NULL.
+ * @note One state includes geometry, color, map data.
+ *
+ * @param transit The transit object.
+ * @param state_keep Keeping or Non Keeping.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_objects_final_state_keep_set(Elm_Transit *transit, Eina_Bool state_keep) EINA_ARG_NONNULL(1);
+
+/**
+ * Get a value whether the objects states will be reset or not.
+ *
+ * @note @p transit can not be NULL
+ *
+ * @see elm_transit_objects_final_state_keep_set()
+ *
+ * @param transit The transit object.
+ * @return EINA_TRUE means the states of the objects will be reset.
+ * If @p transit is NULL, EINA_FALSE is returned
+ *
+ * @ingroup Transit
+ */
+EAPI Eina_Bool elm_transit_objects_final_state_keep_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Set the event enabled when transit is operating.
+ *
+ * If @p enabled is EINA_TRUE, the objects of the transit will receives
+ * events from mouse and keyboard during the animation.
+ * @note When you add an object with elm_transit_object_add(), its state from
+ * evas_object_pass_events_get(obj) is saved, and it is applied when the
+ * transit ends, if you change this state with evas_object_pass_events_set()
+ * after adding the object, this state will change again when @p transit stops
+ * to run.
+ *
+ * @param transit The transit object.
+ * @param enabled Events are received when enabled is @c EINA_TRUE, and
+ * ignored otherwise.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_event_enabled_set(Elm_Transit *transit, Eina_Bool enabled) EINA_ARG_NONNULL(1);
+
+/**
+ * Get the value of event enabled status.
+ *
+ * @see elm_transit_event_enabled_set()
+ *
+ * @param transit The Transit object
+ * @return EINA_TRUE, when event is enabled. If @p transit is NULL
+ * EINA_FALSE is returned
+ *
+ * @ingroup Transit
+ */
+EAPI Eina_Bool elm_transit_event_enabled_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Set the user-callback function when the transit is deleted.
+ *
+ * @note Using this function twice will overwrite the first function setted.
+ * @note the @p transit object will be deleted after call @p cb function.
+ *
+ * @param transit The transit object.
+ * @param cb Callback function pointer. This function will be called before
+ * the deletion of the transit.
+ * @param data Callback funtion user data. It is the @p op parameter.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_del_cb_set(Elm_Transit *transit, Elm_Transit_Del_Cb cb, void *data) EINA_ARG_NONNULL(1);
+
+/**
+ * Set reverse effect automatically.
+ *
+ * If auto reverse is setted, after running the effects with the progress
+ * parameter from 0 to 1, it will call the effecs again with the progress
+ * from 1 to 0. The transit will last for a time iqual to (2 * duration * repeat),
+ * where the duration was setted with the function elm_transit_add and
+ * the repeat with the function elm_transit_repeat_times_set().
+ *
+ * @param transit The transit object.
+ * @param reverse EINA_TRUE means the auto_reverse is on.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_auto_reverse_set(Elm_Transit *transit, Eina_Bool reverse) EINA_ARG_NONNULL(1);
+
+/**
+ * Get if the auto reverse is on.
+ *
+ * @see elm_transit_auto_reverse_set()
+ *
+ * @param transit The transit object.
+ * @return EINA_TRUE means auto reverse is on. If @p transit is NULL
+ * EINA_FALSE is returned
+ *
+ * @ingroup Transit
+ */
+EAPI Eina_Bool elm_transit_auto_reverse_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Set the transit repeat count. Effect will be repeated by repeat count.
+ *
+ * This function sets the number of repetition the transit will run after
+ * the first one, that is, if @p repeat is 1, the transit will run 2 times.
+ * If the @p repeat is a negative number, it will repeat infinite times.
+ *
+ * @note If this function is called during the transit execution, the transit
+ * will run @p repeat times, ignoring the times it already performed.
+ *
+ * @param transit The transit object
+ * @param repeat Repeat count
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_repeat_times_set(Elm_Transit *transit, int repeat) EINA_ARG_NONNULL(1);
+
+/**
+ * Get the transit repeat count.
+ *
+ * @see elm_transit_repeat_times_set()
+ *
+ * @param transit The Transit object.
+ * @return The repeat count. If @p transit is NULL
+ * 0 is returned
+ *
+ * @ingroup Transit
+ */
+EAPI int elm_transit_repeat_times_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Set the transit animation acceleration type.
+ *
+ * This function sets the tween mode of the transit that can be:
+ * ELM_TRANSIT_TWEEN_MODE_LINEAR - The default mode.
+ * ELM_TRANSIT_TWEEN_MODE_SINUSOIDAL - Starts in accelerate mode and ends decelerating.
+ * ELM_TRANSIT_TWEEN_MODE_DECELERATE - The animation will be slowed over time.
+ * ELM_TRANSIT_TWEEN_MODE_ACCELERATE - The animation will accelerate over time.
+ *
+ * @param transit The transit object.
+ * @param tween_mode The tween type.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_tween_mode_set(Elm_Transit *transit, Elm_Transit_Tween_Mode tween_mode) EINA_ARG_NONNULL(1);
+
+/**
+ * Get the transit animation acceleration type.
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ * @return The tween type. If @p transit is NULL
+ * ELM_TRANSIT_TWEEN_MODE_LINEAR is returned.
+ *
+ * @ingroup Transit
+ */
+EAPI Elm_Transit_Tween_Mode elm_transit_tween_mode_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Set the transit animation time
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ * @param duration The animation time.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_duration_set(Elm_Transit *transit, double duration) EINA_ARG_NONNULL(1);
+
+/**
+ * Get the transit animation time
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ *
+ * @return The transit animation time.
+ *
+ * @ingroup Transit
+ */
+EAPI double elm_transit_duration_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Starts the transition.
+ * Once this API is called, the transit begins to measure the time.
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_go(Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Pause/Resume the transition.
+ *
+ * If you call elm_transit_go again, the transit will be started from the
+ * beginning, and will be unpaused.
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ * @param paused Whether the transition should be paused or not.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_paused_set(Elm_Transit *transit, Eina_Bool paused) EINA_ARG_NONNULL(1);
+
+/**
+ * Get the value of paused status.
+ *
+ * @see elm_transit_paused_set()
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ * @return EINA_TRUE means transition is paused. If @p transit is NULL
+ * EINA_FALSE is returned
+ *
+ * @ingroup Transit
+ */
+EAPI Eina_Bool elm_transit_paused_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Get the time progression of the animation (a double value between 0.0 and 1.0).
+ *
+ * The value returned is a fraction (current time / total time). It
+ * represents the progression position relative to the total.
+ *
+ * @note @p transit can not be NULL
+ *
+ * @param transit The transit object.
+ *
+ * @return The time progression value. If @p transit is NULL
+ * 0 is returned
+ *
+ * @ingroup Transit
+ */
+EAPI double elm_transit_progress_value_get(const Elm_Transit *transit) EINA_ARG_NONNULL(1);
+
+/**
+ * Makes the chain relationship between two transits.
+ *
+ * @note @p transit can not be NULL. Transit would have multiple chain transits.
+ * @note @p chain_transit can not be NULL. Chain transits could be chained to the only one transit.
+ *
+ * @param transit The transit object.
+ * @param chain_transit The chain transit object. This transit will be operated
+ * after transit is done.
+ *
+ * This function adds @p chain_transit transition to a chain after the @p
+ * transit, and will be started as soon as @p transit ends. See @ref
+ * transit_example_02_explained for a full example.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_chain_transit_add(Elm_Transit *transit, Elm_Transit *chain_transit) EINA_ARG_NONNULL(1, 2);
+
+/**
+ * Cut off the chain relationship between two transits.
+ *
+ * @note @p transit can not be NULL. Transit would have the chain relationship with @p chain transit.
+ * @note @p chain_transit can not be NULL. Chain transits should be chained to the @p transit.
+ *
+ * @param transit The transit object.
+ * @param chain_transit The chain transit object.
+ *
+ * This function remove the @p chain_transit transition from the @p transit.
+ *
+ * @ingroup Transit
+ */
+EAPI void elm_transit_chain_transit_del(Elm_Transit *transit, Elm_Transit *chain_transit) EINA_ARG_NONNULL(1, 2);
+
+/**
+ * Get the current chain transit list.
+ *
+ * @note @p transit can not be NULL.
+ *
+ * @param transit The transit object.
+ * @return chain transit list.
+ *
+ * @ingroup Transit
+ */
+EAPI Eina_List *elm_transit_chain_transits_get(const Elm_Transit *transit);
+
+/**
+ * Add the Resizing Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates resizing effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param from_w Object width size when effect begins.
+ * @param from_h Object height size when effect begins.
+ * @param to_w Object width size when effect ends.
+ * @param to_h Object height size when effect ends.
+ * @return Resizing effect context data.
+ *
+ * @ingroup Transit
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_resizing_add(Elm_Transit *transit, Evas_Coord from_w, Evas_Coord from_h, Evas_Coord to_w, Evas_Coord to_h);
+
+/**
+ * Add the Translation Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates translation effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param from_dx X Position variation when effect begins.
+ * @param from_dy Y Position variation when effect begins.
+ * @param to_dx X Position variation when effect ends.
+ * @param to_dy Y Position variation when effect ends.
+ * @return Translation effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the geometry information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_translation_add(Elm_Transit *transit, Evas_Coord from_dx, Evas_Coord from_dy, Evas_Coord to_dx, Evas_Coord to_dy);
+
+/**
+ * Add the Zoom Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates zoom effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param from_rate Scale rate when effect begins (1 is current rate).
+ * @param to_rate Scale rate when effect ends.
+ * @return Zoom effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the geometry information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_zoom_add(Elm_Transit *transit, float from_rate, float to_rate);
+
+/**
+ * Add the Flip Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates flip effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ * @note This effect is applied to each pair of objects in the order they are listed
+ * in the transit list of objects. The first object in the pair will be the
+ * "front" object and the second will be the "back" object.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param axis Flipping Axis(X or Y).
+ * @param cw Flipping Direction. EINA_TRUE is clock-wise.
+ * @return Flip effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the geometry information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_flip_add(Elm_Transit *transit, Elm_Transit_Effect_Flip_Axis axis, Eina_Bool cw);
+
+/**
+ * Add the Resizable Flip Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates resizable flip effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ * @note This effect is applied to each pair of objects in the order they are listed
+ * in the transit list of objects. The first object in the pair will be the
+ * "front" object and the second will be the "back" object.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param axis Flipping Axis(X or Y).
+ * @param cw Flipping Direction. EINA_TRUE is clock-wise.
+ * @return Resizable flip effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the geometry information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_resizable_flip_add(Elm_Transit *transit, Elm_Transit_Effect_Flip_Axis axis, Eina_Bool cw);
+
+/**
+ * Add the Wipe Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates wipe effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param type Wipe type. Hide or show.
+ * @param dir Wipe Direction.
+ * @return Wipe effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the geometry information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_wipe_add(Elm_Transit *transit, Elm_Transit_Effect_Wipe_Type type, Elm_Transit_Effect_Wipe_Dir dir);
+
+/**
+ * Add the Color Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates color effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param from_r RGB R when effect begins.
+ * @param from_g RGB G when effect begins.
+ * @param from_b RGB B when effect begins.
+ * @param from_a RGB A when effect begins.
+ * @param to_r RGB R when effect ends.
+ * @param to_g RGB G when effect ends.
+ * @param to_b RGB B when effect ends.
+ * @param to_a RGB A when effect ends.
+ * @return Color effect context data.
+ *
+ * @ingroup Transit
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_color_add(Elm_Transit *transit, unsigned int from_r, unsigned int from_g, unsigned int from_b, unsigned int from_a, unsigned int to_r, unsigned int to_g, unsigned int to_b, unsigned int to_a);
+
+/**
+ * Add the Fade Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates fade effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ * @note This effect is applied to each pair of objects in the order they are listed
+ * in the transit list of objects. The first object in the pair will be the
+ * "before" object and the second will be the "after" object.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @return Fade effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the color information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_fade_add(Elm_Transit *transit);
+
+/**
+ * Add the Blend Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates blend effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ * @note This effect is applied to each pair of objects in the order they are listed
+ * in the transit list of objects. The first object in the pair will be the
+ * "before" object and the second will be the "after" object.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @return Blend effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the color information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_blend_add(Elm_Transit *transit);
+
+/**
+ * Add the Rotation Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates rotation effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param from_degree Degree when effect begins.
+ * @param to_degree Degree when effect is ends.
+ * @return Rotation effect context data.
+ *
+ * @ingroup Transit
+ * @warning It is highly recommended just create a transit with this effect when
+ * the window that the objects of the transit belongs has already been created.
+ * This is because this effect needs the geometry information about the objects,
+ * and if the window was not created yet, it can get a wrong information.
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_rotation_add(Elm_Transit *transit, float from_degree, float to_degree);
+
+/**
+ * Add the ImageAnimation Effect to Elm_Transit.
+ *
+ * @note This API is one of the facades. It creates image animation effect context
+ * and add it's required APIs to elm_transit_effect_add.
+ * The @p images parameter is a list images paths. This list and
+ * its contents will be deleted at the end of the effect by
+ * elm_transit_effect_image_animation_context_free() function.
+ *
+ * Example:
+ * @code
+ * char buf[PATH_MAX];
+ * Eina_List *images = NULL;
+ * Elm_Transit *transi = elm_transit_add();
+ *
+ * snprintf(buf, sizeof(buf), "%s/images/icon_11.png", PACKAGE_DATA_DIR);
+ * images = eina_list_append(images, eina_stringshare_add(buf));
+ *
+ * snprintf(buf, sizeof(buf), "%s/images/logo_small.png", PACKAGE_DATA_DIR);
+ * images = eina_list_append(images, eina_stringshare_add(buf));
+ * elm_transit_effect_image_animation_add(transi, images);
+ *
+ * @endcode
+ *
+ * @see elm_transit_effect_add()
+ *
+ * @param transit Transit object.
+ * @param images Eina_List of images file paths. This list and
+ * its contents will be deleted at the end of the effect by
+ * elm_transit_effect_image_animation_context_free() function.
+ * @return Image Animation effect context data.
+ *
+ * @ingroup Transit
+ */
+EAPI Elm_Transit_Effect *elm_transit_effect_image_animation_add(Elm_Transit *transit, Eina_List *images);
+/**
+ * @}
+ */