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304
MXC-A36/xrz/lv_drivers/win_drv.c
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304
MXC-A36/xrz/lv_drivers/win_drv.c
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/**
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* @file win_drv.c
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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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#include "win_drv.h"
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#if USE_WINDOWS
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#include <windows.h>
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#include <windowsx.h>
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#include "lvgl/lvgl.h"
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#if LV_COLOR_DEPTH < 16
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#error Windows driver only supports true RGB colors at this time
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#endif
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/**********************
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* DEFINES
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**********************/
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#define WINDOW_STYLE (WS_OVERLAPPEDWINDOW & ~(WS_SIZEBOX | WS_MAXIMIZEBOX | WS_THICKFRAME))
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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 do_register(void);
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static void win_drv_flush(lv_disp_t *drv, lv_area_t *area, const lv_color_t * color_p);
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static void win_drv_fill(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t color);
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static void win_drv_map(int32_t x1, int32_t y1, int32_t x2, int32_t y2, const lv_color_t * color_p);
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static void win_drv_read(lv_indev_t *drv, lv_indev_data_t * data);
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static void msg_handler(void *param);
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static COLORREF lv_color_to_colorref(const lv_color_t color);
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static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
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/**********************
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* GLOBAL VARIABLES
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**********************/
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bool lv_win_exit_flag = false;
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lv_disp_t *lv_windows_disp;
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/**********************
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* STATIC VARIABLES
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**********************/
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static HWND hwnd;
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static uint32_t *fbp = NULL; /* Raw framebuffer memory */
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static bool mouse_pressed;
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static int mouse_x, mouse_y;
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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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const char g_szClassName[] = "LVGL";
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HWND windrv_init(void)
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{
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WNDCLASSEX wc;
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RECT winrect;
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HICON lvgl_icon;
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//Step 1: Registering the Window Class
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wc.cbSize = sizeof(WNDCLASSEX);
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wc.style = 0;
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wc.lpfnWndProc = WndProc;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = 0;
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wc.hInstance = GetModuleHandle(NULL);
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lvgl_icon = (HICON) LoadImage( NULL, "lvgl_icon.bmp", IMAGE_ICON, 0, 0, LR_LOADFROMFILE);
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if(lvgl_icon == NULL)
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lvgl_icon = LoadIcon(NULL, IDI_APPLICATION);
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wc.hIcon = lvgl_icon;
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wc.hCursor = LoadCursor(NULL, IDC_ARROW);
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wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
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wc.lpszMenuName = NULL;
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wc.lpszClassName = g_szClassName;
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wc.hIconSm = lvgl_icon;
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if(!RegisterClassEx(&wc))
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{
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return NULL;
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}
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winrect.left = 0;
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winrect.right = WINDOW_HOR_RES - 1;
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winrect.top = 0;
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winrect.bottom = WINDOW_VER_RES - 1;
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AdjustWindowRectEx(&winrect, WINDOW_STYLE, FALSE, WS_EX_CLIENTEDGE);
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OffsetRect(&winrect, -winrect.left, -winrect.top);
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// Step 2: Creating the Window
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hwnd = CreateWindowEx(
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WS_EX_CLIENTEDGE,
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g_szClassName,
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"LVGL Simulator",
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WINDOW_STYLE,
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CW_USEDEFAULT, CW_USEDEFAULT, winrect.right, winrect.bottom,
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NULL, NULL, GetModuleHandle(NULL), NULL);
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if(hwnd == NULL)
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{
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return NULL;
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}
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ShowWindow(hwnd, SW_SHOWDEFAULT);
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UpdateWindow(hwnd);
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lv_task_create(msg_handler, 0, LV_TASK_PRIO_HIGHEST, NULL);
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lv_win_exit_flag = false;
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do_register();
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void do_register(void)
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{
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static lv_disp_draw_buf_t disp_buf_1;
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static lv_color_t buf1_1[WINDOW_HOR_RES * 100]; /*A buffer for 10 rows*/
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lv_disp_draw_buf_init(&disp_draw_buf_1, buf1_1, NULL, WINDOW_HOR_RES * 100); /*Initialize the display buffer*/
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/*-----------------------------------
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* Register the display in LVGLGL
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*----------------------------------*/
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static lv_disp_drv_t disp_drv; /*Descriptor of a display driver*/
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lv_disp_drv_init(&disp_drv); /*Basic initialization*/
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/*Set up the functions to access to your display*/
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/*Set the resolution of the display*/
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disp_drv.hor_res = WINDOW_HOR_RES;
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disp_drv.ver_res = WINDOW_VER_RES;
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/*Used to copy the buffer's content to the display*/
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disp_drv.flush_cb = win_drv_flush;
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/*Set a display buffer*/
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disp_drv.draw_buf = &disp_buf_1;
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/*Finally register the driver*/
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lv_windows_disp = lv_disp_drv_register(&disp_drv);
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static lv_indev_drv_t indev_drv;
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.read_cb = win_drv_read;
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lv_indev_drv_register(&indev_drv);
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}
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static void msg_handler(void *param)
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{
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(void)param;
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MSG msg;
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BOOL bRet;
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if( (bRet = PeekMessage( &msg, NULL, 0, 0, TRUE )) != 0)
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{
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if (bRet == -1)
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{
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return;
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}
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else
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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if(msg.message == WM_QUIT)
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lv_win_exit_flag = true;
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}
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}
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static void win_drv_read(lv_indev_t *drv, lv_indev_data_t * data)
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{
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data->state = mouse_pressed ? LV_INDEV_STATE_PR : LV_INDEV_STATE_REL;
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data->point.x = mouse_x;
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data->point.y = mouse_y;
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}
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static void on_paint(void)
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{
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HBITMAP bmp = CreateBitmap(WINDOW_HOR_RES, WINDOW_VER_RES, 1, 32, fbp);
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PAINTSTRUCT ps;
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HDC hdc = BeginPaint(hwnd, &ps);
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HDC hdcMem = CreateCompatibleDC(hdc);
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HBITMAP hbmOld = SelectObject(hdcMem, bmp);
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BitBlt(hdc, 0, 0, WINDOW_HOR_RES, WINDOW_VER_RES, hdcMem, 0, 0, SRCCOPY);
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SelectObject(hdcMem, hbmOld);
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DeleteDC(hdcMem);
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EndPaint(hwnd, &ps);
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DeleteObject(bmp);
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}
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/**
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* Flush a buffer to the marked area
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* @param x1 left coordinate
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* @param y1 top coordinate
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* @param x2 right coordinate
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* @param y2 bottom coordinate
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* @param color_p an array of colors
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*/
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static void win_drv_flush(lv_disp_t *drv, lv_area_t *area, const lv_color_t * color_p)
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{
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win_drv_map(area->x1, area->y1, area->x2, area->y2, color_p);
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lv_disp_flush_ready(drv);
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}
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/**
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* Put a color map to the marked area
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* @param x1 left coordinate
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* @param y1 top coordinate
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* @param x2 right coordinate
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* @param y2 bottom coordinate
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* @param color_p an array of colors
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*/
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static void win_drv_map(int32_t x1, int32_t y1, int32_t x2, int32_t y2, const lv_color_t * color_p)
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{
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for(int y = y1; y <= y2; y++)
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{
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for(int x = x1; x <= x2; x++)
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{
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fbp[y*WINDOW_HOR_RES+x] = lv_color_to32(*color_p);
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color_p++;
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}
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}
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InvalidateRect(hwnd, NULL, FALSE);
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UpdateWindow(hwnd);
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}
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static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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HDC hdc;
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PAINTSTRUCT ps;
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switch(msg) {
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case WM_CREATE:
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fbp = malloc(4*WINDOW_HOR_RES*WINDOW_VER_RES);
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if(fbp == NULL)
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return 1;
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SetTimer(hwnd, 0, 10, (TIMERPROC)lv_task_handler);
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SetTimer(hwnd, 1, 25, NULL);
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return 0;
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case WM_MOUSEMOVE:
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case WM_LBUTTONDOWN:
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case WM_LBUTTONUP:
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mouse_x = GET_X_LPARAM(lParam);
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mouse_y = GET_Y_LPARAM(lParam);
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if(msg == WM_LBUTTONDOWN || msg == WM_LBUTTONUP) {
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mouse_pressed = (msg == WM_LBUTTONDOWN);
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}
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return 0;
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case WM_CLOSE:
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free(fbp);
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fbp = NULL;
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DestroyWindow(hwnd);
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return 0;
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case WM_PAINT:
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on_paint();
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return 0;
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case WM_TIMER:
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lv_tick_inc(25);
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return 0;
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case WM_DESTROY:
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PostQuitMessage(0);
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return 0;
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default:
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break;
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}
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return DefWindowProc(hwnd, msg, wParam, lParam);
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}
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static COLORREF lv_color_to_colorref(const lv_color_t color)
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{
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uint32_t raw_color = lv_color_to32(color);
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lv_color32_t tmp;
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tmp.full = raw_color;
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uint32_t colorref = RGB(tmp.ch.red, tmp.ch.green, tmp.ch.blue);
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return colorref;
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}
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#endif
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