lv_roller: lv_roler added but not ready yet

lv_objx/lv_ddlist.c

@@ -194,8 +194,8 @@ void lv_ddlist_set_options(lv_obj_t * ddlist, const char ** options)
     lv_label_set_text(ext->opt_label, "");
     uint16_t i = 0;
     while(options[i][0] != '\0') {
-        lv_label_append_text(ext->opt_label, options[i]);
-        if(options[i + 1][0] != '\0') lv_label_append_text(ext->opt_label, "\n");
+        lv_label_ins_text(ext->opt_label, LV_LABEL_POS_LAST, options[i]);
+        if(options[i + 1][0] != '\0') lv_label_ins_text(ext->opt_label, LV_LABEL_POS_LAST, "\n");
         i++;
     }
 
@@ -239,6 +239,8 @@ void lv_ddlist_set_selected(lv_obj_t * ddlist, uint16_t sel_opt)
     /*Move the list to show the current option*/
     if(ext->opened == 0) {
         lv_ddlist_pos_act_option(ddlist);
+    } else {
+        lv_obj_inv(ddlist);
     }
 }
 
@@ -286,6 +288,20 @@ void lv_ddlist_set_style_select(lv_obj_t * ddlist, lv_style_t * style)
     lv_ddlist_ext_t * ext = lv_obj_get_ext(ddlist);
     ext->style_sel = style;
 
+}
+
+/**
+ * Open or Collapse the drop down list
+ * @param ddlist pointer to drop down list object
+ * @param state true: open; false: collapse
+ * @param anim true: use animations; false: not use animations
+ */
+void lv_ddlist_open(lv_obj_t * ddlist, bool state, bool anim)
+{
+    lv_ddlist_ext_t * ext = lv_obj_get_ext(ddlist);
+    ext->opened = state ? 1 : 0;
+    lv_ddlist_refr_size(ddlist, anim ? ext->anim_time : 0);
+
 }
 /*=====================
  * Getter functions

lv_objx/lv_ddlist.h

@@ -113,6 +113,14 @@ void lv_ddlist_set_auto_size(lv_obj_t * ddlist, bool auto_size);
  */
 void lv_ddlist_set_style_select(lv_obj_t * ddlist, lv_style_t * style);
 
+/**
+ * Open or Collapse the drop down list
+ * @param ddlist pointer to drop down list object
+ * @param state true: open; false: collapse
+ * @param anim true: use animations; false: not use animations
+ */
+void lv_ddlist_open(lv_obj_t * ddlist, bool state, bool anim);
+
 /**
  * Get the options of a drop down list
  * @param ddlist pointer to drop down list object

lv_objx/lv_roller.c

@@ -0,0 +1,239 @@
+/**
+ * @file lv_roller.c
+ * 
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_conf.h"
+#if USE_LV_ROLLER != 0
+
+#include "lv_roller.h"
+#include "../lv_draw/lv_draw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static bool lv_roller_design(lv_obj_t * roller, const area_t * mask, lv_design_mode_t mode);
+bool roller_scrl_signal(lv_obj_t * roller_scrl, lv_signal_t sign, void * param);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+static lv_signal_f_t ancestor_scr_signal_f;
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/*----------------- 
+ * Create function
+ *-----------------*/
+
+/**
+ * Create a roller object
+ * @param par pointer to an object, it will be the parent of the new roller
+ * @param copy pointer to a roller object, if not NULL then the new object will be copied from it
+ * @return pointer to the created roller
+ */
+lv_obj_t * lv_roller_create(lv_obj_t * par, lv_obj_t * copy)
+{
+    /*Create the ancestor of roller*/
+	/*TODO modify it to the ancestor create function */
+    lv_obj_t * new_roller = lv_ddlist_create(par, copy);
+    dm_assert(new_roller);
+    
+    /*Allocate the roller type specific extended data*/
+    lv_roller_ext_t * ext = lv_obj_alloc_ext(new_roller, sizeof(lv_roller_ext_t));
+    dm_assert(ext);
+
+    /*Initialize the allocated 'ext' */
+
+    /*The signal and design functions are not copied so set them here*/
+    lv_obj_set_signal_f(new_roller, lv_roller_signal);
+    lv_obj_set_design_f(new_roller, lv_roller_design);
+
+    if(ancestor_scr_signal_f == NULL) ancestor_scr_signal_f = lv_obj_get_signal_f(lv_page_get_scrl(new_roller));
+
+    /*Init the new roller roller*/
+    if(copy == NULL) {
+        lv_obj_t * scrl = lv_page_get_scrl(new_roller);
+        lv_obj_set_drag(scrl, true);
+        lv_page_set_rel_action(new_roller, NULL);
+        lv_obj_set_signal_f(scrl, roller_scrl_signal);
+       // lv_ddlist_open(new_roller, true, false);
+        lv_obj_set_style(new_roller, lv_style_get(LV_STYLE_PRETTY, NULL));
+        lv_cont_set_fit(lv_page_get_scrl(new_roller), true, false);
+        lv_ddlist_set_options_str(new_roller, "alma\nkorte\ncitrom\nbanan\neper\ndinnye");
+
+        lv_style_t * style_label = lv_obj_get_style(ext->ddlist.opt_label);
+        lv_obj_set_height(new_roller, (font_get_height(style_label->font)  >> FONT_ANTIALIAS) * 3 + style_label->line_space * 4);
+
+        lv_obj_set_height(lv_page_get_scrl(new_roller), lv_obj_get_height(ext->ddlist.opt_label) + lv_obj_get_height(new_roller));
+        lv_obj_align(ext->ddlist.opt_label, NULL, LV_ALIGN_CENTER, 0, 0);
+
+    }
+    /*Copy an existing roller*/
+    else {
+    	lv_roller_ext_t * copy_ext = lv_obj_get_ext(copy);
+
+        /*Refresh the style with new signal function*/
+        lv_obj_refr_style(new_roller);
+    }
+    
+    return new_roller;
+}
+
+/**
+ * Signal function of the roller
+ * @param roller pointer to a roller object
+ * @param sign a signal type from lv_signal_t enum
+ * @param param pointer to a signal specific variable
+ * @return true: the object is still valid (not deleted), false: the object become invalid
+ */
+bool lv_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * param)
+{
+    bool valid;
+
+    /* Include the ancient signal function */
+    /* TODO update it to the ancestor's signal function*/
+    valid = lv_ddlist_signal(roller, sign, param);
+
+    /* The object can be deleted so check its validity and then
+     * make the object specific signal handling */
+    if(valid != false) {
+    	if(sign == LV_SIGNAL_CLEANUP) {
+            /*Nothing to cleanup. (No dynamically allocated memory in 'ext')*/
+    	}
+    }
+    
+    return valid;
+}
+
+/*======================
+ * Add/remove functions
+ *=====================*/
+
+/*
+ * New object specific "add" or "remove" functions come here
+ */
+
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/*
+ * New object specific "set" functions come here
+ */
+
+
+/*=====================
+ * Getter functions
+ *====================*/
+
+/*
+ * New object specific "get" functions come here
+ */
+
+/*=====================
+ * Other functions
+ *====================*/
+
+/*
+ * New object specific "other" functions come here
+ */
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+
+/**
+ * Handle the drawing related tasks of the rollers
+ * @param roller pointer to an object
+ * @param mask the object will be drawn only in this area
+ * @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
+ *                                  (return 'true' if yes)
+ *             LV_DESIGN_DRAW: draw the object (always return 'true')
+ *             LV_DESIGN_DRAW_POST: drawing after every children are drawn
+ * @param return true/false, depends on 'mode'
+ */
+static bool lv_roller_design(lv_obj_t * roller, const area_t * mask, lv_design_mode_t mode)
+{
+    /*Return false if the object is not covers the mask_p area*/
+    if(mode == LV_DESIGN_COVER_CHK) {
+    	return false;
+    }
+    /*Draw the object*/
+    else if(mode == LV_DESIGN_DRAW_MAIN) {
+
+
+        lv_style_t * style = lv_obj_get_style(roller);
+        lv_draw_rect(&roller->cords, mask, style);
+
+        const font_t * font = style->font;
+        lv_roller_ext_t * ext = lv_obj_get_ext(roller);
+        cord_t font_h = font_get_height(font) >> FONT_ANTIALIAS;
+        area_t rect_area;
+        rect_area.y1 = lv_obj_get_height(roller) / 2 - font_h / 2 - style->line_space - 2;
+
+        rect_area.y2 = rect_area.y1 + font_h + style->line_space;
+        rect_area.x1 = ext->ddlist.opt_label->cords.x1 - style->hpad;
+        rect_area.x2 = rect_area.x1 + lv_obj_get_width(lv_page_get_scrl(roller));
+
+        lv_draw_rect(&rect_area, mask, ext->ddlist.style_sel);
+    }
+    /*Post draw when the children are drawn*/
+    else if(mode == LV_DESIGN_DRAW_POST) {
+
+    }
+
+    return true;
+}
+
+
+bool roller_scrl_signal(lv_obj_t * roller_scrl, lv_signal_t sign, void * param)
+{
+    bool valid;
+
+    /* Include the ancient signal function */
+    valid = ancestor_scr_signal_f(roller_scrl, sign, param);
+
+    /* The object can be deleted so check its validity and then
+     * make the object specific signal handling */
+    if(valid != false) {
+        if(sign == LV_SIGNAL_RELEASED) {
+            lv_obj_t * roller = lv_obj_get_parent(roller_scrl);
+            lv_roller_ext_t * ext = lv_obj_get_ext(roller);
+            lv_style_t * style_label = lv_obj_get_style(ext->ddlist.opt_label);
+
+            cord_t label_y1 = ext->ddlist.opt_label->cords.y1;
+            cord_t label_unit = (font_get_height(style_label->font) >> FONT_ANTIALIAS) + style_label->line_space / 2;
+            cord_t mid = (roller->cords.y2 - roller->cords.y1) / 2;
+
+            int32_t id = (mid - label_y1) / label_unit;
+
+            printf("roller diff: %d , unit: %d, id: %d\n", mid-label_y1, label_unit, id);
+        }
+    }
+
+    return valid;
+}
+
+
+
+#endif

lv_objx/lv_roller.h

@@ -0,0 +1,74 @@
+/**
+ * @file lv_roller.h
+ * 
+ */
+
+
+/*Search an replace: roller -> object normal name with lower case (e.g. button, label etc.)
+ * 					 roller -> object short name with lower case(e.g. btn, label etc)
+ *                   ROLLER -> object short name with upper case (e.g. BTN, LABEL etc.)
+ *
+ */
+
+#ifndef LV_ROLLER_H
+#define LV_ROLLER_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_conf.h"
+#if USE_LV_ROLLER != 0
+
+#include "../lv_obj/lv_obj.h"
+#include "lv_ddlist.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+/*Data of roller*/
+typedef struct {
+    lv_ddlist_ext_t ddlist; /*Ext. of ancestor*/
+    /*New data for this type */
+}lv_roller_ext_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+
+/**
+ * Create a roller objects
+ * @param par pointer to an object, it will be the parent of the new roller
+ * @param copy pointer to a roller object, if not NULL then the new object will be copied from it
+ * @return pointer to the created roller
+ */
+lv_obj_t * lv_roller_create(lv_obj_t * par, lv_obj_t * copy);
+
+/**
+ * Signal function of the roller
+ * @param roller pointer to a roller object
+ * @param sign a signal type from lv_signal_t enum
+ * @param param pointer to a signal specific variable
+ * @return true: the object is still valid (not deleted), false: the object become invalid
+ */
+bool lv_roller_signal(lv_obj_t * roller, lv_signal_t sign, void * param);
+
+
+/**********************
+ *      MACROS
+ **********************/
+
+#endif  /*USE_LV_ROLLER*/
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif  /*LV_ROLLER_H*/