move some part of lv_obj.c to lv_obj_pos.v and lv_obj_scroll.c

src/lv_core/lv_obj_scroll.h

@@ -0,0 +1,153 @@
+/**
+ * @file lv_obj_scroll.h
+ *
+ */
+
+#ifndef LV_OBJ_SCROLL_H
+#define LV_OBJ_SCROLL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_misc/lv_area.h"
+#include "../lv_misc/lv_anim.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+struct _lv_obj_t;
+typedef struct _lv_obj_t lv_obj_t;
+
+/** Scrollbar modes: shows when should the scrollbars be visible*/
+enum {
+    LV_SCROLL_MODE_OFF    = 0x0, /**< Never show scroll bars*/
+    LV_SCROLL_MODE_ON     = 0x1, /**< Always show scroll bars*/
+    LV_SCROLL_MODE_ACTIVE = 0x2, /**< Show scroll bars when object is being scrolled*/
+    LV_SCROLL_MODE_AUTO   = 0x3, /**< Show scroll bars when the content is large enough to be scrolled*/
+};
+typedef uint8_t lv_scroll_mode_t;
+
+
+enum {
+    LV_SCROLL_SNAP_ALIGN_NONE,
+    LV_SCROLL_SNAP_ALIGN_START,
+    LV_SCROLL_SNAP_ALIGN_END,
+    LV_SCROLL_SNAP_ALIGN_CENTER
+};
+typedef uint8_t lv_scroll_snap_align_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Set how the scrollbars should behave.
+ * @param obj pointer to an object
+ * @param mode: LV_SCROLL_MODE_ON/OFF/AUTO/ACTIVE
+ */
+void lv_obj_set_scroll_mode(lv_obj_t * obj, lv_scroll_mode_t mode);
+
+/**
+ * Get how the scrollbars should behave.
+ * @param obj pointer to an object
+ * @return mode: LV_SCROLL_MODE_ON/OFF/AUTO/ACTIVE
+ */
+lv_scroll_mode_t lv_obj_get_scroll_mode(lv_obj_t * obj);
+
+/**
+ * Moves all children with horizontally or vertically.
+ * It doesn't take into account any limits so any values are possible
+ * @param obj pointer to an object whose children should be moved
+ * @param x pixel to move horizontally
+ * @param y pixels to move vertically
+ */
+void _lv_obj_scroll_by_raw(lv_obj_t * obj, lv_coord_t x, lv_coord_t y);
+
+/**
+ * Moves all children with horizontally or vertically.
+ * Limits the scroll to the bounding box of the children.
+ * @param obj pointer to an object whose children should be moved
+ * @param x pixel to move horizontally
+ * @param y pixels to move vertically
+ */
+void lv_obj_scroll_by(lv_obj_t * obj, lv_coord_t x, lv_coord_t y, lv_anim_enable_t anim_en);
+
+/**
+ * Scroll the a given x coordinate to the left side of obj.
+ * @param obj pointer to an object which should be scrolled
+ * @param x the x coordinate to scroll to
+ * @param y the y coordinate to scroll to
+ */
+void lv_obj_scroll_to(lv_obj_t * obj, lv_coord_t x, lv_coord_t y, lv_anim_enable_t anim_en);
+
+/**
+ * Scroll the a given x coordinate to the left side of obj.
+ * @param obj pointer to an object which should be scrolled
+ * @param x the x coordinate to scroll to
+ */
+void lv_obj_scroll_to_x(lv_obj_t * obj, lv_coord_t x, lv_anim_enable_t anim_en);
+
+/**
+ * Scroll the a given y coordinate to the top side of obj.
+ * @param obj pointer to an object which should be scrolled
+ * @param y the y coordinate to scroll to
+ */
+void lv_obj_scroll_to_y(lv_obj_t * obj, lv_coord_t y, lv_anim_enable_t anim_en);
+
+
+/**
+ * Return the height of the area above the parent.
+ * That is the number of pixels the object can be scrolled down.
+ * Normally positive but can be negative when scrolled inside.
+ * @param obj
+ * @return
+ */
+lv_coord_t lv_obj_get_scroll_top(const lv_obj_t * obj);
+
+/**
+ * Return the height of the area below the parent.
+ * That is the number of pixels the object can be scrolled up.
+ * Normally positive but can be negative when scrolled inside.
+ * @param obj
+ * @return
+ */
+lv_coord_t lv_obj_get_scroll_bottom(const lv_obj_t * obj);
+
+
+/**
+ * Return the weight of the area on the left the parent.
+ * That is the number of pixels the object can be scrolled down.
+ * Normally positive but can be negative when scrolled inside.
+ * @param obj
+ * @return
+ */
+lv_coord_t lv_obj_get_scroll_left(const lv_obj_t * obj);
+
+/**
+ * Return the width of the area below the object.
+ * That is the number of pixels the object can be scrolled left.
+ * Normally positive but can be negative when scrolled inside.
+ * @param obj
+ * @return
+ */
+lv_coord_t lv_obj_get_scroll_right(const lv_obj_t * obj);
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif /*LV_OBJ_SCROLL_H*/