初版

SDK/apps/common/ui/lvgl_v8/examples/event/lv_example_event.h

@@ -0,0 +1,41 @@
+/**
+ * @file lv_example_event.h
+ *
+ */
+
+#ifndef LV_EXAMPLE_EVENT_H
+#define LV_EXAMPLE_EVENT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+void lv_example_event_1(void);
+void lv_example_event_2(void);
+void lv_example_event_3(void);
+void lv_example_event_4(void);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_EXAMPLE_EVENT_H*/

SDK/apps/common/ui/lvgl_v8/examples/event/lv_example_event_1.c

@@ -0,0 +1,36 @@
+#ifdef SUPPORT_MS_EXTENSIONS
+#pragma bss_seg(".lv_ui_core.data.bss")
+#pragma data_seg(".lv_ui_core.data")
+#pragma const_seg(".lv_ui_core.text.const")
+#pragma code_seg(".lv_ui_core.text")
+#endif
+#include "../lv_examples.h"
+#if LV_BUILD_EXAMPLES && LV_USE_SWITCH
+
+static void event_cb(lv_event_t *e)
+{
+    LV_LOG_USER("Clicked");
+
+    static uint32_t cnt = 1;
+    lv_obj_t *btn = lv_event_get_target(e);
+    lv_obj_t *label = lv_obj_get_child(btn, 0);
+    lv_label_set_text_fmt(label, "%"LV_PRIu32, cnt);
+    cnt++;
+}
+
+/**
+ * Add click event to a button
+ */
+void lv_example_event_1(void)
+{
+    lv_obj_t *btn = lv_btn_create(lv_scr_act());
+    lv_obj_set_size(btn, 100, 50);
+    lv_obj_center(btn);
+    lv_obj_add_event_cb(btn, event_cb, LV_EVENT_CLICKED, NULL);
+
+    lv_obj_t *label = lv_label_create(btn);
+    lv_label_set_text(label, "Click me!");
+    lv_obj_center(label);
+}
+
+#endif

SDK/apps/common/ui/lvgl_v8/examples/event/lv_example_event_2.c

@@ -0,0 +1,52 @@
+#ifdef SUPPORT_MS_EXTENSIONS
+#pragma bss_seg(".lv_ui_core.data.bss")
+#pragma data_seg(".lv_ui_core.data")
+#pragma const_seg(".lv_ui_core.text.const")
+#pragma code_seg(".lv_ui_core.text")
+#endif
+#include "../lv_examples.h"
+#if LV_BUILD_EXAMPLES && LV_USE_SWITCH
+
+static void event_cb(lv_event_t *e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    lv_obj_t *label = lv_event_get_user_data(e);
+
+    switch (code) {
+    case LV_EVENT_PRESSED:
+        lv_label_set_text(label, "The last button event:\nLV_EVENT_PRESSED");
+        break;
+    case LV_EVENT_CLICKED:
+        lv_label_set_text(label, "The last button event:\nLV_EVENT_CLICKED");
+        break;
+    case LV_EVENT_LONG_PRESSED:
+        lv_label_set_text(label, "The last button event:\nLV_EVENT_LONG_PRESSED");
+        break;
+    case LV_EVENT_LONG_PRESSED_REPEAT:
+        lv_label_set_text(label, "The last button event:\nLV_EVENT_LONG_PRESSED_REPEAT");
+        break;
+    default:
+        break;
+    }
+}
+
+/**
+ * Handle multiple events
+ */
+void lv_example_event_2(void)
+{
+    lv_obj_t *btn = lv_btn_create(lv_scr_act());
+    lv_obj_set_size(btn, 100, 50);
+    lv_obj_center(btn);
+
+    lv_obj_t *btn_label = lv_label_create(btn);
+    lv_label_set_text(btn_label, "Click me!");
+    lv_obj_center(btn_label);
+
+    lv_obj_t *info_label = lv_label_create(lv_scr_act());
+    lv_label_set_text(info_label, "The last button event:\nNone");
+
+    lv_obj_add_event_cb(btn, event_cb, LV_EVENT_ALL, info_label);
+}
+
+#endif

SDK/apps/common/ui/lvgl_v8/examples/event/lv_example_event_3.c

@@ -0,0 +1,52 @@
+#ifdef SUPPORT_MS_EXTENSIONS
+#pragma bss_seg(".lv_ui_core.data.bss")
+#pragma data_seg(".lv_ui_core.data")
+#pragma const_seg(".lv_ui_core.text.const")
+#pragma code_seg(".lv_ui_core.text")
+#endif
+#include "../lv_examples.h"
+#if LV_BUILD_EXAMPLES && LV_USE_FLEX
+
+static void event_cb(lv_event_t *e)
+{
+    /*The original target of the event. Can be the buttons or the container*/
+    lv_obj_t *target = lv_event_get_target(e);
+
+    /*The current target is always the container as the event is added to it*/
+    lv_obj_t *cont = lv_event_get_current_target(e);
+
+    /*If container was clicked do nothing*/
+    if (target == cont) {
+        return;
+    }
+
+    /*Make the clicked buttons red*/
+    lv_obj_set_style_bg_color(target, lv_palette_main(LV_PALETTE_RED), 0);
+}
+
+/**
+ * Demonstrate event bubbling
+ */
+void lv_example_event_3(void)
+{
+
+    lv_obj_t *cont = lv_obj_create(lv_scr_act());
+    lv_obj_set_size(cont, 290, 200);
+    lv_obj_center(cont);
+    lv_obj_set_flex_flow(cont, LV_FLEX_FLOW_ROW_WRAP);
+
+    uint32_t i;
+    for (i = 0; i < 30; i++) {
+        lv_obj_t *btn = lv_btn_create(cont);
+        lv_obj_set_size(btn, 80, 50);
+        lv_obj_add_flag(btn, LV_OBJ_FLAG_EVENT_BUBBLE);
+
+        lv_obj_t *label = lv_label_create(btn);
+        lv_label_set_text_fmt(label, "%"LV_PRIu32, i);
+        lv_obj_center(label);
+    }
+
+    lv_obj_add_event_cb(cont, event_cb, LV_EVENT_CLICKED, NULL);
+}
+
+#endif

SDK/apps/common/ui/lvgl_v8/examples/event/lv_example_event_4.c

@@ -0,0 +1,71 @@
+#ifdef SUPPORT_MS_EXTENSIONS
+#pragma bss_seg(".lv_ui_core.data.bss")
+#pragma data_seg(".lv_ui_core.data")
+#pragma const_seg(".lv_ui_core.text.const")
+#pragma code_seg(".lv_ui_core.text")
+#endif
+#include "../lv_examples.h"
+
+#if LV_BUILD_EXAMPLES
+
+static int n = 3;
+static lv_obj_t *label = NULL;
+
+static void timer_cb(lv_timer_t *timer)
+{
+    if (n < 3 || n > 32) {
+        n = 3;
+    } else {
+        static uint32_t old_tick = 0;
+        uint32_t tick = lv_tick_get();
+        if (!old_tick) {
+            old_tick = tick;
+        }
+        if (tick - old_tick > 3000) {
+            n++;
+            lv_label_set_text_fmt(label, "%d sides", n);
+            old_tick = tick;
+        }
+    }
+    lv_obj_invalidate(timer->user_data);
+}
+
+static void event_cb(lv_event_t *e)
+{
+    /*The original target of the event. Can be the buttons or the container*/
+    lv_draw_ctx_t *draw_ctx = lv_event_get_draw_ctx(e);
+    lv_draw_rect_dsc_t draw_dsc;
+    lv_draw_rect_dsc_init(&draw_dsc);
+    draw_dsc.bg_color = lv_palette_main(LV_PALETTE_LIGHT_GREEN);
+    draw_dsc.bg_opa = LV_OPA_COVER;
+    lv_point_t points[32];
+    int i, r = 150;
+    uint32_t tick = lv_tick_get();
+    for (i = 0; i < n; i++) {
+        int angle = i * 360 / n + ((tick % 36000) / 100);
+        lv_coord_t x = 150 + (r * lv_trigo_cos(angle) >> LV_TRIGO_SHIFT), y =
+                           150 + (r * lv_trigo_sin(angle) >> LV_TRIGO_SHIFT);
+        points[i].x = x;
+        points[i].y = y;
+    }
+    lv_draw_polygon(draw_ctx, &draw_dsc, points, n);
+}
+
+/**
+ * Demonstrate event bubbling
+ */
+void lv_example_event_4(void)
+{
+
+    lv_obj_t *cont = lv_obj_create(lv_scr_act());
+    lv_obj_remove_style_all(cont);
+    lv_obj_set_size(cont, 300, 300);
+    label = lv_label_create(cont);
+    lv_label_set_text_fmt(label, "%d sides", n);
+    lv_obj_center(label);
+
+    lv_obj_add_event_cb(cont, event_cb, LV_EVENT_DRAW_MAIN, NULL);
+    lv_timer_create(timer_cb, 17, cont);
+}
+
+#endif