menucom.c

ARM_CORTEX-M3应用实例开发详解光盘

#include <stdio.h>
#include <string.h>

#include "Menu.H"
#include "ff.h"


#define LOCAL_DEBUG 1
#if LOCAL_DEBUG 
#define    DEBUG(x...)    do { printf(x); }while(0)
#else
#define    DEBUG(x...)    do {  }while(0)
#endif

//static   FATFS fs;
int MenuGuiInit(void)
{
    int ret = 0;
   
    GUI_SetBkColor(MENU_BC);
    GUI_SetColor(MENU_FC);
    GUI_SetFont(MENU_CF);

#if 0
    if (FR_OK != f_mount(1, &fs)) {
        printf(" Mount SD Card fs error\r\n");
        ret = -1;
    }
#endif
    return ret;
}

/* h>0 高亮显示屏幕的一个区域，h=0 去掉高亮效果*/
#define COLOR_PERCENT   35
void MenuHigLight(int x0, int y0, int xs, int ys, int h)
{
    static unsigned short _tmp[6000];

    int i, j, k = 0;
    int cntr_xs = 0;
    int cntr_ys = 0;
    int r2 = 0;
    unsigned short r, g, b, t;

    if (xs * ys > 6000) {
        return;
    }

    if (xs == ys) {
        cntr_xs = xs / 2 - 1;
        cntr_ys = ys / 2 - 1;

        r2 = (cntr_ys - 1) * (cntr_ys - 1);
    }

    if (h > 0) {

        for (i=0; i<ys; i++)
            for (j=0; j<xs; j++) {
                int dx, dy;

                dx = (j - cntr_xs);
                dy = (i - cntr_ys);
                if (1
                && (xs == ys)
                && (dx * dx + dy * dy >= r2)
                ) {
                    continue;
                }

                t = LCD_L0_GetPixelIndex(x0 + j, y0 + i);
                _tmp[k++] = t;
                r = (t & 0x1f);
                g = (t >> 5) & 0x3f;
                b = (t >> 11) & 0x1f;

                r += (0x1f - r) * COLOR_PERCENT / 100;
                g += (0x3f - g) * COLOR_PERCENT / 100;
                b += (0x1f - b) * COLOR_PERCENT / 100;
        
                t = r | (g << 5) | (b << 11);
                LCD_L0_SetPixelIndex(x0 + j, y0 + i, t);
            }
    } else {
        for (i=0; i<ys; i++)
            for (j=0; j<xs; j++) {
                LCD_L0_SetPixelIndex(x0 + j, y0 + i, _tmp[k++]);
            }    
    }
}

static FIL fil;   
static void fun(unsigned int n, void *pd)
{
    int ret;
    unsigned int br, tol = 0;

    char *p = pd;

    do {
        ret = f_read(&fil, p, n, &br);
        if (ret != FR_OK)
            return;
        tol += br;
        
    } while (tol < n && br > 0);
}

int GUI_ShowStreamBMP(int x0, int y0, void (*pfStream)(unsigned int, void *));
int MenuShowBmp(char *pfn, int x, int y)
{
    
    int ret;

    // f_mount(1, &fs);

    ret = f_open(&fil, pfn, FA_READ);
    if (ret) {
        printf("\r\nopen file %s err", pfn);
        return -1;
    }
    GUI_ShowStreamBMP(x, y, &fun);
    f_close(&fil);

    return 0;
}