init lvgl code

LVGL.Simulator/lvgl/examples/widgets/list/index.rst

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+
+Simple List
+""""""""""""""""
+
+.. lv_example:: widgets/list/lv_example_list_1
+  :language: c
+
+
+Sorting a List using up and down buttons
+""""""""""""""""
+
+.. lv_example:: widgets/list/lv_example_list_2
+  :language: c

LVGL.Simulator/lvgl/examples/widgets/list/lv_example_list_1.c

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+#include "../../lv_examples.h"
+#if LV_USE_LIST && LV_BUILD_EXAMPLES
+static lv_obj_t * list1;
+
+static void event_handler(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    lv_obj_t * obj = lv_event_get_target(e);
+    if(code == LV_EVENT_CLICKED) {
+        LV_LOG_USER("Clicked: %s", lv_list_get_btn_text(list1, obj));
+    }
+}
+
+void lv_example_list_1(void)
+{
+    /*Create a list*/
+    list1 = lv_list_create(lv_scr_act());
+    lv_obj_set_size(list1, 180, 220);
+    lv_obj_center(list1);
+
+    /*Add buttons to the list*/
+    lv_obj_t * btn;
+
+    lv_list_add_text(list1, "File");
+    btn = lv_list_add_btn(list1, LV_SYMBOL_FILE, "New");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_DIRECTORY, "Open");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_SAVE, "Save");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_CLOSE, "Delete");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_EDIT, "Edit");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+
+    lv_list_add_text(list1, "Connectivity");
+    btn = lv_list_add_btn(list1, LV_SYMBOL_BLUETOOTH, "Bluetooth");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_GPS, "Navigation");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_USB, "USB");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_BATTERY_FULL, "Battery");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+
+    lv_list_add_text(list1, "Exit");
+    btn = lv_list_add_btn(list1, LV_SYMBOL_OK, "Apply");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+    btn = lv_list_add_btn(list1, LV_SYMBOL_CLOSE, "Close");
+    lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+}
+
+#endif

LVGL.Simulator/lvgl/examples/widgets/list/lv_example_list_1.py

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+def event_handler(e):
+    code = e.get_code()
+    obj = e.get_target()
+    if code == lv.EVENT.CLICKED:
+            print("Clicked: list1." + list1.get_btn_text(obj))
+
+# Create a list
+list1 = lv.list(lv.scr_act())
+list1.set_size(180, 220)
+list1.center()
+
+# Add buttons to the list
+list1.add_text("File")
+btn_new = list1.add_btn(lv.SYMBOL.FILE, "New")
+btn_new.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_open = list1.add_btn(lv.SYMBOL.DIRECTORY, "Open")
+btn_open.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_save = list1.add_btn(lv.SYMBOL.SAVE, "Save")
+btn_save.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_delete = list1.add_btn(lv.SYMBOL.CLOSE, "Delete")
+btn_delete.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_edit = list1.add_btn(lv.SYMBOL.EDIT, "Edit")
+btn_edit.add_event_cb(event_handler,lv.EVENT.ALL, None)
+
+list1.add_text("Connectivity")
+btn_bluetooth = list1.add_btn(lv.SYMBOL.BLUETOOTH, "Bluetooth")
+btn_bluetooth.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_navig = list1.add_btn(lv.SYMBOL.GPS, "Navigation")
+btn_navig.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_USB = list1.add_btn(lv.SYMBOL.USB, "USB")
+btn_USB.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_battery = list1.add_btn(lv.SYMBOL.BATTERY_FULL, "Battery")
+btn_battery.add_event_cb(event_handler,lv.EVENT.ALL, None)
+
+list1.add_text("Exit")
+btn_apply = list1.add_btn(lv.SYMBOL.OK, "Apply")
+btn_apply.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_close = list1.add_btn(lv.SYMBOL.CLOSE, "Close")
+btn_close.add_event_cb(event_handler,lv.EVENT.ALL, None)
+

LVGL.Simulator/lvgl/examples/widgets/list/lv_example_list_2.c

@@ -0,0 +1,169 @@
+#include <stdlib.h>
+
+
+#include "../../lv_examples.h"
+#if LV_USE_LIST && LV_BUILD_EXAMPLES
+
+static lv_obj_t * list1;
+static lv_obj_t * list2;
+
+static lv_obj_t * currentButton = NULL;
+
+static void event_handler(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    lv_obj_t * obj = lv_event_get_target(e);
+    if(code == LV_EVENT_CLICKED) {
+        LV_LOG_USER("Clicked: %s", lv_list_get_btn_text(list1, obj));
+
+        if(currentButton == obj) {
+            currentButton = NULL;
+        }
+        else {
+            currentButton = obj;
+        }
+        lv_obj_t * parent = lv_obj_get_parent(obj);
+        uint32_t i;
+        for(i = 0; i < lv_obj_get_child_cnt(parent); i++) {
+            lv_obj_t * child = lv_obj_get_child(parent, i);
+            if(child == currentButton) {
+                lv_obj_add_state(child, LV_STATE_CHECKED);
+            }
+            else {
+                lv_obj_clear_state(child, LV_STATE_CHECKED);
+            }
+        }
+    }
+}
+
+static void event_handler_top(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    if(code == LV_EVENT_CLICKED) {
+        if(currentButton == NULL) return;
+        lv_obj_move_background(currentButton);
+        lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
+    }
+}
+
+static void event_handler_up(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
+        if(currentButton == NULL) return;
+        uint32_t index = lv_obj_get_index(currentButton);
+        if(index <= 0) return;
+        lv_obj_move_to_index(currentButton, index - 1);
+        lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
+    }
+}
+
+static void event_handler_center(lv_event_t * e)
+{
+    const lv_event_code_t code = lv_event_get_code(e);
+    if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
+        if(currentButton == NULL) return;
+
+        lv_obj_t * parent = lv_obj_get_parent(currentButton);
+        const uint32_t pos = lv_obj_get_child_cnt(parent) / 2;
+
+        lv_obj_move_to_index(currentButton, pos);
+
+        lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
+    }
+}
+
+static void event_handler_dn(lv_event_t * e)
+{
+    const lv_event_code_t code = lv_event_get_code(e);
+    if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
+        if(currentButton == NULL) return;
+        const uint32_t index = lv_obj_get_index(currentButton);
+
+        lv_obj_move_to_index(currentButton, index + 1);
+        lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
+    }
+}
+
+static void event_handler_bottom(lv_event_t * e)
+{
+    const lv_event_code_t code = lv_event_get_code(e);
+    if(code == LV_EVENT_CLICKED) {
+        if(currentButton == NULL) return;
+        lv_obj_move_foreground(currentButton);
+        lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
+    }
+}
+
+static void event_handler_swap(lv_event_t * e)
+{
+    const lv_event_code_t code = lv_event_get_code(e);
+    // lv_obj_t* obj = lv_event_get_target(e);
+    if((code == LV_EVENT_CLICKED) || (code == LV_EVENT_LONG_PRESSED_REPEAT)) {
+        uint32_t cnt = lv_obj_get_child_cnt(list1);
+        for(int i = 0; i < 100; i++)
+            if(cnt > 1) {
+                lv_obj_t * obj = lv_obj_get_child(list1, rand() % cnt);
+                lv_obj_move_to_index(obj, rand() % cnt);
+                if(currentButton != NULL) {
+                    lv_obj_scroll_to_view(currentButton, LV_ANIM_ON);
+                }
+            }
+    }
+}
+
+void lv_example_list_2(void)
+{
+    /*Create a list*/
+    list1 = lv_list_create(lv_scr_act());
+    lv_obj_set_size(list1, lv_pct(60), lv_pct(100));
+    lv_obj_set_style_pad_row(list1, 5, 0);
+
+    /*Add buttons to the list*/
+    lv_obj_t * btn;
+    int i;
+    for(i = 0; i < 15; i++) {
+        btn = lv_btn_create(list1);
+        lv_obj_set_width(btn, lv_pct(50));
+        lv_obj_add_event_cb(btn, event_handler, LV_EVENT_CLICKED, NULL);
+
+        lv_obj_t * lab = lv_label_create(btn);
+        lv_label_set_text_fmt(lab, "Item %d", i);
+    }
+
+    /*Select the first button by default*/
+    currentButton = lv_obj_get_child(list1, 0);
+    lv_obj_add_state(currentButton, LV_STATE_CHECKED);
+
+    /*Create a second list with up and down buttons*/
+    list2 = lv_list_create(lv_scr_act());
+    lv_obj_set_size(list2, lv_pct(40), lv_pct(100));
+    lv_obj_align(list2, LV_ALIGN_TOP_RIGHT, 0, 0);
+    lv_obj_set_flex_flow(list2, LV_FLEX_FLOW_COLUMN);
+
+    btn = lv_list_add_btn(list2, NULL, "Top");
+    lv_obj_add_event_cb(btn, event_handler_top, LV_EVENT_ALL, NULL);
+    lv_group_remove_obj(btn);
+
+    btn = lv_list_add_btn(list2, LV_SYMBOL_UP, "Up");
+    lv_obj_add_event_cb(btn, event_handler_up, LV_EVENT_ALL, NULL);
+    lv_group_remove_obj(btn);
+
+    btn = lv_list_add_btn(list2, LV_SYMBOL_LEFT, "Center");
+    lv_obj_add_event_cb(btn, event_handler_center, LV_EVENT_ALL, NULL);
+    lv_group_remove_obj(btn);
+
+    btn = lv_list_add_btn(list2, LV_SYMBOL_DOWN, "Down");
+    lv_obj_add_event_cb(btn, event_handler_dn, LV_EVENT_ALL, NULL);
+    lv_group_remove_obj(btn);
+
+    btn = lv_list_add_btn(list2, NULL, "Bottom");
+    lv_obj_add_event_cb(btn, event_handler_bottom, LV_EVENT_ALL, NULL);
+    lv_group_remove_obj(btn);
+
+    btn = lv_list_add_btn(list2, LV_SYMBOL_SHUFFLE, "Shuffle");
+    lv_obj_add_event_cb(btn, event_handler_swap, LV_EVENT_ALL, NULL);
+    lv_group_remove_obj(btn);
+}
+
+#endif

LVGL.Simulator/lvgl/examples/widgets/list/lv_example_list_2.py

@@ -0,0 +1,137 @@
+import urandom
+
+currentButton = None
+list1 = None
+
+def event_handler(evt):
+    global currentButton
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED:
+        if currentButton == obj:
+            currentButton = None
+        else:
+            currentButton = obj
+        parent = obj.get_parent()
+        for i in range( parent.get_child_cnt()):
+            child = parent.get_child(i)
+            if child == currentButton:
+                child.add_state(lv.STATE.CHECKED)
+            else:
+                child.clear_state(lv.STATE.CHECKED)
+
+def event_handler_top(evt):
+    global currentButton
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED:
+        if currentButton == None:
+            return
+        currentButton.move_background()
+        currentButton.scroll_to_view( lv.ANIM.ON)
+
+def event_handler_up(evt):
+    global currentButton
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED or code == lv.EVENT.LONG_PRESSED_REPEAT:
+        if currentButton == None:
+            return
+        index = currentButton.get_index()
+        if index <= 0:
+            return
+        currentButton.move_to_index(index - 1)
+        currentButton.scroll_to_view(lv.ANIM.ON)
+
+def event_handler_center(evt):
+    global currentButton
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED or code == lv.EVENT.LONG_PRESSED_REPEAT:
+        if currentButton == None:
+            return
+        parent = currentButton.get_parent()
+        pos = parent.get_child_cnt() // 2
+        currentButton.move_to_index(pos)
+        currentButton.scroll_to_view(lv.ANIM.ON)
+
+def event_handler_dn(evt):
+    global currentButton
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED or code == lv.EVENT.LONG_PRESSED_REPEAT:
+        if currentButton == None:
+            return
+        index = currentButton.get_index()
+        currentButton.move_to_index(index + 1)
+        currentButton.scroll_to_view(lv.ANIM.ON)
+
+def event_handler_bottom(evt):
+    global currentButton
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED or code == lv.EVENT.LONG_PRESSED_REPEAT:
+        if currentButton == None:
+            return
+        currentButton.move_foreground()
+        currentButton.scroll_to_view(lv.ANIM.ON)
+
+def event_handler_swap(evt):
+    global currentButton
+    global list1
+    code = evt.get_code()
+    obj = evt.get_target()
+    if code == lv.EVENT.CLICKED:
+        cnt = list1.get_child_cnt()
+        for i in range(100):
+            if cnt > 1:
+                obj = list1.get_child(urandom.getrandbits(32) % cnt )
+                obj.move_to_index(urandom.getrandbits(32) % cnt)
+        if currentButton != None:
+            currentButton.scroll_to_view(lv.ANIM.ON)
+
+#Create a list with buttons that can be sorted
+list1 = lv.list(lv.scr_act())
+list1.set_size(lv.pct(60), lv.pct(100))
+list1.set_style_pad_row( 5, 0)
+
+for i in range(15):
+    btn = lv.btn(list1)
+    btn.set_width(lv.pct(100))
+    btn.add_event_cb( event_handler, lv.EVENT.CLICKED, None)
+    lab = lv.label(btn)
+    lab.set_text("Item " + str(i))
+
+#Select the first button by default
+currentButton = list1.get_child(0)
+currentButton.add_state(lv.STATE.CHECKED)
+
+#Create a second list with up and down buttons
+list2 = lv.list(lv.scr_act())
+list2.set_size(lv.pct(40), lv.pct(100))
+list2.align(lv.ALIGN.TOP_RIGHT, 0, 0)
+list2.set_flex_flow(lv.FLEX_FLOW.COLUMN)
+
+btn = list2.add_btn(None, "Top")
+btn.add_event_cb(event_handler_top, lv.EVENT.ALL, None)
+lv.group_remove_obj(btn)
+
+btn = list2.add_btn(lv.SYMBOL.UP, "Up")
+btn.add_event_cb(event_handler_up, lv.EVENT.ALL, None)
+lv.group_remove_obj(btn)
+
+btn = list2.add_btn(lv.SYMBOL.LEFT, "Center")
+btn.add_event_cb(event_handler_center, lv.EVENT.ALL, None)
+lv.group_remove_obj(btn)
+
+btn = list2.add_btn(lv.SYMBOL.DOWN, "Down")
+btn.add_event_cb(event_handler_dn, lv.EVENT.ALL, None)
+lv.group_remove_obj(btn)
+
+btn = list2.add_btn(None, "Bottom")
+btn.add_event_cb(event_handler_bottom, lv.EVENT.ALL, None)
+lv.group_remove_obj(btn)
+
+btn = list2.add_btn(lv.SYMBOL.SHUFFLE, "Shuffle")
+btn.add_event_cb(event_handler_swap, lv.EVENT.ALL, None)
+lv.group_remove_obj(btn)

LVGL.Simulator/lvgl/examples/widgets/list/test.py

@@ -0,0 +1,43 @@
+#!/opt/bin/lv_micropython -i
+import lvgl as lv
+import display_driver
+def event_handler(e):
+    code = e.get_code()
+    obj = e.get_target()
+    if code == lv.EVENT.CLICKED:
+            print("Clicked: list1." + list1.get_btn_text(obj))
+
+# Create a list
+list1 = lv.list(lv.scr_act())
+list1.set_size(180, 220)
+list1.center()
+
+# Add buttons to the list
+list1.add_text("File")
+btn_new = list1.add_btn(lv.SYMBOL.FILE, "New")
+btn_new.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_open = list1.add_btn(lv.SYMBOL.DIRECTORY, "Open")
+btn_open.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_save = list1.add_btn(lv.SYMBOL.SAVE, "Save")
+btn_save.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_delete = list1.add_btn(lv.SYMBOL.CLOSE, "Delete")
+btn_delete.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_edit = list1.add_btn(lv.SYMBOL.EDIT, "Edit")
+btn_edit.add_event_cb(event_handler,lv.EVENT.ALL, None)
+
+list1.add_text("Connectivity")
+btn_bluetooth = list1.add_btn(lv.SYMBOL.BLUETOOTH, "Bluetooth")
+btn_bluetooth.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_navig = list1.add_btn(lv.SYMBOL.GPS, "Navigation")
+btn_navig.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_USB = list1.add_btn(lv.SYMBOL.USB, "USB")
+btn_USB.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_battery = list1.add_btn(lv.SYMBOL.BATTERY_FULL, "Battery")
+btn_battery.add_event_cb(event_handler,lv.EVENT.ALL, None)
+
+list1.add_text("Exit")
+btn_apply = list1.add_btn(lv.SYMBOL.OK, "Apply")
+btn_apply.add_event_cb(event_handler,lv.EVENT.ALL, None)
+btn_close = list1.add_btn(lv.SYMBOL.CLOSE, "Close")
+btn_close.add_event_cb(event_handler,lv.EVENT.ALL, None)
+