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+/**
+ * @defgroup Panes Panes
+ * @ingroup Elementary
+ *
+ * @image html img/widget/panes/preview-00.png
+ * @image latex img/widget/panes/preview-00.eps width=\textwidth
+ *
+ * @image html img/panes.png
+ * @image latex img/panes.eps width=\textwidth
+ *
+ * The panes widget adds a draggable bar between two contents. When dragged
+ * this bar will resize contents' size.
+ *
+ * Panes can be displayed vertically or horizontally, and contents
+ * size proportion can be customized (homogeneous by default).
+ *
+ * Smart callbacks one can listen to:
+ * - "press" - The panes has been pressed (button wasn't released yet).
+ * - "unpressed" - The panes was released after being pressed.
+ * - "clicked" - The panes has been clicked>
+ * - "clicked,double" - The panes has been double clicked
+ *
+ * Available styles for it:
+ * - @c "default"
+ *
+ * Default content parts of the panes widget that you can use are:
+ * @li "left" - A leftside content of the panes
+ * @li "right" - A rightside content of the panes
+ *
+ * If panes are displayed vertically, left content will be displayed on
+ * top.
+ *
+ * Supported elm_object common APIs.
+ * @li @ref elm_object_part_content_set
+ * @li @ref elm_object_part_content_get
+ * @li @ref elm_object_part_content_unset
+ *
+ * Here is an example on its usage:
+ * @li @ref panes_example
+ */
+
+/**
+ * @addtogroup Panes
+ * @{
+ */
+
+/**
+ * Add a new panes widget to the given parent Elementary
+ * (container) object.
+ *
+ * @param parent The parent object.
+ * @return a new panes widget handle or @c NULL, on errors.
+ *
+ * This function inserts a new panes widget on the canvas.
+ *
+ * @ingroup Panes
+ */
+EAPI Evas_Object                 *elm_panes_add(Evas_Object *parent);
+
+/**
+ * Set whether the left and right panes resize homogeneously or not.
+ *
+ * @param obj The panes object.
+ * @param fixed Use @c EINA_TRUE to make @p obj to be
+ * resize the left and right panes @b homogeneously.
+ * Use @c EINA_FALSE to make use of the values specified in
+ * elm_panes_content_left_size_set() and
+ * elm_panes_content_right_size_set()
+ * to resize the left and right panes.
+ *
+ * By default panes are resized homogeneously.
+ *
+ * @see elm_panes_fixed_get()
+ * @see elm_panes_content_left_size_set()
+ * @see elm_panes_content_right_size_set()
+ *
+ * @ingroup Panes
+ */
+EAPI void                         elm_panes_fixed_set(Evas_Object *obj, Eina_Bool fixed);
+
+/**
+ * Retrieve the resize mode for the panes of a given panes widget.
+ *
+ * @param obj The panes object.
+ * @return @c EINA_TRUE, if @p obj is set to be resized @b homogeneously,
+ *
+ * @see elm_panes_fixed_set() for more details.
+ * @see elm_panes_content_left_size_get()
+ * @see elm_panes_content_right_size_get()
+ *
+ * @ingroup Panes
+ */
+EAPI Eina_Bool                    elm_panes_fixed_get(const Evas_Object *obj);
+
+/**
+ * Get the size proportion of panes widget's left side.
+ *
+ * @param obj The panes object.
+ * @return float value between 0.0 and 1.0 representing size proportion
+ * of left side.
+ *
+ * @see elm_panes_content_left_size_set() for more details.
+ *
+ * @ingroup Panes
+ */
+EAPI double                       elm_panes_content_left_size_get(const Evas_Object *obj);
+
+/**
+ * Set the size proportion of panes widget's left side.
+ *
+ * @param obj The panes object.
+ * @param size Value between 0.0 and 1.0 representing size proportion
+ * of left side.
+ *
+ * By default it's homogeneous, i.e., both sides have the same size.
+ *
+ * If something different is required, it can be set with this function.
+ * For example, if the left content should be displayed over
+ * 75% of the panes size, @p size should be passed as @c 0.75.
+ * This way, right content will be resized to 25% of panes size.
+ *
+ * If displayed vertically, left content is displayed at top, and
+ * right content at bottom.
+ *
+ * @note This proportion will change when user drags the panes bar.
+ *
+ * @see elm_panes_content_left_size_get()
+ *
+ * @ingroup Panes
+ */
+EAPI void                         elm_panes_content_left_size_set(Evas_Object *obj, double size);
+
+/**
+ * Get the size proportion of panes widget's right side.
+ *
+ * @param obj The panes object.
+ * @return float value between 0.0 and 1.0 representing size proportion
+ * of right side.
+ *
+ * @see elm_panes_content_right_size_set() for more details.
+ *
+ * @ingroup Panes
+ */
+EAPI double                       elm_panes_content_right_size_get(const Evas_Object *obj);
+
+/**
+ * Set the size proportion of panes widget's right side.
+ *
+ * @param obj The panes object.
+ * @param size Value between 0.0 and 1.0 representing size proportion
+ * of right side.
+ *
+ * By default it's homogeneous, i.e., both sides have the same size.
+ *
+ * If something different is required, it can be set with this function.
+ * For example, if the right content should be displayed over
+ * 75% of the panes size, @p size should be passed as @c 0.75.
+ * This way, left content will be resized to 25% of panes size.
+ *
+ * If displayed vertically, left content is displayed at top, and
+ * right content at bottom.
+ *
+ * @note This proportion will change when user drags the panes bar.
+ *
+ * @see elm_panes_content_right_size_get()
+ *
+ * @ingroup Panes
+ */
+EAPI void                         elm_panes_content_right_size_set(Evas_Object *obj, double size);
+
+
+/**
+ * Set the orientation of a given panes widget.
+ *
+ * @param obj The panes object.
+ * @param horizontal Use @c EINA_TRUE to make @p obj to be
+ * @b horizontal, @c EINA_FALSE to make it @b vertical.
+ *
+ * Use this function to change how your panes is to be
+ * disposed: vertically or horizontally.
+ *
+ * By default it's displayed horizontally.
+ *
+ * @see elm_panes_horizontal_get()
+ *
+ * @ingroup Panes
+ */
+EAPI void                         elm_panes_horizontal_set(Evas_Object *obj, Eina_Bool horizontal);
+
+/**
+ * Retrieve the orientation of a given panes widget.
+ *
+ * @param obj The panes object.
+ * @return @c EINA_TRUE, if @p obj is set to be @b horizontal,
+ * @c EINA_FALSE if it's @b vertical (and on errors).
+ *
+ * @see elm_panes_horizontal_set() for more details.
+ *
+ * @ingroup Panes
+ */
+EAPI Eina_Bool                    elm_panes_horizontal_get(const Evas_Object *obj);
+
+/**
+ * @}
+ */