mirror of
https://github.com/bytecodealliance/wasm-micro-runtime.git
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153 lines
4.5 KiB
C
153 lines
4.5 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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/**
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* @file main
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#define _DEFAULT_SOURCE /* needed for usleep() */
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#include <stdlib.h>
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#include <unistd.h>
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#define SDL_MAIN_HANDLED /*To fix SDL's "undefined reference to WinMain" issue*/
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#include <SDL2/SDL.h>
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#include "lvgl/lvgl.h"
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#include "lv_drivers/display/monitor.h"
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#include "lv_drivers/indev/mouse.h"
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#include "lv_drivers/indev/mousewheel.h"
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#include "lv_drivers/indev/keyboard.h"
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/*********************
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* DEFINES
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*********************/
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/*On OSX SDL needs different handling*/
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#if defined(__APPLE__) && defined(TARGET_OS_MAC)
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# if __APPLE__ && TARGET_OS_MAC
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#define SDL_APPLE
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# endif
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#endif
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void hal_init(void);
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static void btn_event_cb(lv_obj_t * btn, lv_event_t event);
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/**********************
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* STATIC VARIABLES
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**********************/
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uint32_t count = 0;
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char count_str[11] = { 0 };
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lv_obj_t *hello_world_label;
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lv_obj_t *count_label;
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lv_obj_t * btn1;
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lv_obj_t * label_count1;
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int label_count1_value = 0;
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char label_count1_str[11] = { 0 };
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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int main(int argc, char ** argv)
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{
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(void) argc; /*Unused*/
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(void) argv; /*Unused*/
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/*Initialize LittlevGL*/
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lv_init();
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/*Initialize the HAL (display, input devices, tick) for LittlevGL*/
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hal_init();
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hello_world_label = lv_label_create(lv_disp_get_scr_act(NULL), NULL);
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lv_label_set_text(hello_world_label, "Hello world!");
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lv_obj_align(hello_world_label, NULL, LV_ALIGN_IN_TOP_LEFT, 0, 0);
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count_label = lv_label_create(lv_disp_get_scr_act(NULL), NULL);
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lv_obj_align(count_label, NULL, LV_ALIGN_IN_TOP_MID, 0, 0);
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btn1 = lv_btn_create(lv_disp_get_scr_act(NULL), NULL); /*Create a button on the currently loaded screen*/
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lv_obj_set_event_cb(btn1, btn_event_cb); /*Set function to be called when the button is released*/
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lv_obj_align(btn1, NULL, LV_ALIGN_CENTER, 0, 20); /*Align below the label*/
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/*Create a label on the button*/
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lv_obj_t * btn_label = lv_label_create(btn1, NULL);
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lv_label_set_text(btn_label, "Click ++");
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label_count1 = lv_label_create(lv_disp_get_scr_act(NULL), NULL);
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lv_label_set_text(label_count1, "0");
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lv_obj_align(label_count1, NULL, LV_ALIGN_IN_BOTTOM_MID, 0, 0);
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while(1) {
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/* Periodically call the lv_task handler.
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* It could be done in a timer interrupt or an OS task too.*/
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if ((count % 100) == 0) {
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sprintf(count_str, "%d", count/ 100);
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lv_label_set_text(count_label, count_str);
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}
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lv_task_handler();
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++count;
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usleep(10 * 1000); /*Just to let the system breath*/
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}
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return 0;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/**
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* Initialize the Hardware Abstraction Layer (HAL) for the Littlev graphics library
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*/
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static void hal_init(void)
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{
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/* Use the 'monitor' driver which creates window on PC's monitor to simulate a display*/
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monitor_init();
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/*Create a display buffer*/
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static lv_disp_buf_t disp_buf1;
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static lv_color_t buf1_1[320*10];
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lv_disp_buf_init(&disp_buf1, buf1_1, NULL, 320*10);
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/*Create a display*/
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lv_disp_drv_t disp_drv;
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lv_disp_drv_init(&disp_drv); /*Basic initialization*/
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disp_drv.buffer = &disp_buf1;
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disp_drv.flush_cb = monitor_flush; /*Used when `LV_VDB_SIZE != 0` in lv_conf.h (buffered drawing)*/
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// disp_drv.hor_res = 200;
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// disp_drv.ver_res = 100;
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lv_disp_drv_register(&disp_drv);
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/* Add the mouse as input device
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* Use the 'mouse' driver which reads the PC's mouse*/
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mouse_init();
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lv_indev_drv_t indev_drv;
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lv_indev_drv_init(&indev_drv); /*Basic initialization*/
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.read_cb = mouse_read; /*This function will be called periodically (by the library) to get the mouse position and state*/
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lv_indev_drv_register(&indev_drv);
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}
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static void btn_event_cb(lv_obj_t * btn, lv_event_t event)
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{
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if(event == LV_EVENT_RELEASED) {
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label_count1_value++;
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sprintf(label_count1_str, "%d", label_count1_value);
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lv_label_set_text(label_count1, label_count1_str);
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}
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}
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