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275 lines
7.4 KiB
C
275 lines
7.4 KiB
C
/***************************************************************
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Copyright © zuozhongkai Co., Ltd. 1998-2019. All rights reserved.
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文件名 : bsp_lcdapi.c
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作者 : 左忠凯
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版本 : V1.0
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描述 : LCD API函数文件。
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其他 : 无
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论坛 : www.openedv.com
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日志 : 初版V1.0 2019/3/18 左忠凯创建
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***************************************************************/
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#include "bsp_lcdapi.h"
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#include "font.h"
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/*
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* @description : 画线函数
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* @param - x1 : 线起始点坐标X轴
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* @param - y1 : 线起始点坐标Y轴
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* @param - x2 : 线终止点坐标X轴
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* @param - y2 : 线终止点坐标Y轴
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* @return : 无
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*/
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void lcd_drawline(unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2)
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{
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u16 t;
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int xerr = 0, yerr = 0, delta_x, delta_y, distance;
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int incx, incy, uRow, uCol;
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delta_x = x2 - x1; /* 计算坐标增量 */
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delta_y = y2 - y1;
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uRow = x1;
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uCol = y1;
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if(delta_x > 0) /* 设置单步方向 */
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incx = 1;
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else if(delta_x==0) /* 垂直线 */
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incx = 0;
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else
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{
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incx = -1;
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delta_x = -delta_x;
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}
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if(delta_y>0)
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incy=1;
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else if(delta_y == 0) /* 水平线 */
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incy=0;
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else
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{
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incy = -1;
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delta_y = -delta_y;
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}
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if( delta_x > delta_y) /*选取基本增量坐标轴 */
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distance = delta_x;
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else
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distance = delta_y;
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for(t = 0; t <= distance+1; t++ ) /* 画线输出 */
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{
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lcd_drawpoint(uRow, uCol, tftlcd_dev.forecolor);/* 画点 */
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xerr += delta_x ;
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yerr += delta_y ;
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if(xerr > distance)
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{
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xerr -= distance;
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uRow += incx;
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}
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if(yerr > distance)
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{
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yerr -= distance;
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uCol += incy;
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}
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}
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}
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/*
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* @description : 画矩形函数
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* @param - x1 : 矩形坐上角坐标X轴
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* @param - y1 : 矩形坐上角坐标Y轴
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* @param - x2 : 矩形右下角坐标X轴
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* @param - y2 : 矩形右下角坐标Y轴
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* @return : 无
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*/
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void lcd_draw_rectangle(unsigned short x1, unsigned short y1, unsigned short x2, unsigned short y2)
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{
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lcd_drawline(x1, y1, x2, y1);
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lcd_drawline(x1, y1, x1, y2);
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lcd_drawline(x1, y2, x2, y2);
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lcd_drawline(x2, y1, x2, y2);
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}
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/*
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* @description : 在指定位置画一个指定大小的圆
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* @param - x0 : 圆心坐标X轴
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* @param - y0 : 圆心坐标Y轴
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* @param - y2 : 圆形半径
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* @return : 无
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*/
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void lcd_draw_Circle(unsigned short x0,unsigned short y0,unsigned char r)
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{
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int mx = x0, my = y0;
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int x = 0, y = r;
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int d = 1 - r;
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while(y > x) /* y>x即第一象限的第1区八分圆 */
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{
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lcd_drawpoint(x + mx, y + my, tftlcd_dev.forecolor);
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lcd_drawpoint(y + mx, x + my, tftlcd_dev.forecolor);
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lcd_drawpoint(-x + mx, y + my, tftlcd_dev.forecolor);
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lcd_drawpoint(-y + mx, x + my, tftlcd_dev.forecolor);
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lcd_drawpoint(-x + mx, -y + my, tftlcd_dev.forecolor);
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lcd_drawpoint(-y + mx, -x + my, tftlcd_dev.forecolor);
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lcd_drawpoint(x + mx, -y + my, tftlcd_dev.forecolor);
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lcd_drawpoint(y + mx, -x + my, tftlcd_dev.forecolor);
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if( d < 0)
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{
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d = d + 2 * x + 3;
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}
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else
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{
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d= d + 2 * (x - y) + 5;
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y--;
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}
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x++;
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}
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}
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/*
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* @description : 在指定位置显示一个字符
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* @param - x : 起始坐标X轴
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* @param - y : 起始坐标Y轴
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* @param - num : 显示字符
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* @param - size: 字体大小, 可选12/16/24/32
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* @param - mode: 叠加方式(1)还是非叠加方式(0)
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* @return : 无
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*/
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void lcd_showchar(unsigned short x, unsigned short y,
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unsigned char num, unsigned char size,
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unsigned char mode)
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{
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unsigned char temp, t1, t;
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unsigned short y0 = y;
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unsigned char csize = (size / 8+ ((size % 8) ? 1 : 0)) * (size / 2); /* 得到字体一个字符对应点阵集所占的字节数 */
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num = num - ' '; /*得到偏移后的值（ASCII字库是从空格开始取模，所以-' '就是对应字符的字库） */
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for(t = 0; t < csize; t++)
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{
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if(size == 12) temp = asc2_1206[num][t]; /* 调用1206字体 */
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else if(size == 16)temp = asc2_1608[num][t]; /* 调用1608字体 */
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else if(size == 24)temp = asc2_2412[num][t]; /* 调用2412字体 */
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else if(size == 32)temp = asc2_3216[num][t]; /* 调用3216字体 */
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else return; /* 没有的字库 */
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for(t1 = 0; t1 < 8; t1++)
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{
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if(temp & 0x80)lcd_drawpoint(x, y, tftlcd_dev.forecolor);
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else if(mode==0)lcd_drawpoint(x, y, tftlcd_dev.backcolor);
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temp <<= 1;
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y++;
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if(y >= tftlcd_dev.height) return; /* 超区域了 */
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if((y - y0) == size)
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{
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y = y0;
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x++;
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if(x >= tftlcd_dev.width) return; /* 超区域了 */
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break;
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}
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}
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}
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}
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/*
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* @description : 计算m的n次方
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* @param - m : 要计算的值
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* @param - n : n次方
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* @return : m^n次方.
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*/
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unsigned int lcd_pow(unsigned char m,unsigned char n)
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{
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unsigned int result = 1;
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while(n--) result *= m;
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return result;
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}
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/*
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* @description : 显示指定的数字，高位为0的话不显示
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* @param - x : 起始坐标点X轴。
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* @param - y : 起始坐标点Y轴。
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* @param - num : 数值(0~999999999)。
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* @param - len : 数字位数。
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* @param - size: 字体大小
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* @return : 无
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*/
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void lcd_shownum(unsigned short x,
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unsigned short y,
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unsigned int num,
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unsigned char len,
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unsigned char size)
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{
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unsigned char t, temp;
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unsigned char enshow = 0;
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for(t = 0; t < len; t++)
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{
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temp = (num / lcd_pow(10, len - t - 1)) % 10;
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if(enshow == 0 && t < (len - 1))
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{
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if(temp == 0)
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{
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lcd_showchar(x + (size / 2) * t, y, ' ', size, 0);
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continue;
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}else enshow = 1;
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}
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lcd_showchar(x + (size / 2) * t, y, temp + '0', size, 0);
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}
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}
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/*
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* @description : 显示指定的数字，高位为0,还是显示
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* @param - x : 起始坐标点X轴。
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* @param - y : 起始坐标点Y轴。
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* @param - num : 数值(0~999999999)。
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* @param - len : 数字位数。
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* @param - size : 字体大小
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* @param - mode : [7]:0,不填充;1,填充0.
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* [6:1]:保留
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* [0]:0,非叠加显示;1,叠加显示.
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* @return : 无
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*/
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void lcd_showxnum(unsigned short x, unsigned short y,
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unsigned int num, unsigned char len,
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unsigned char size, unsigned char mode)
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{
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unsigned char t, temp;
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unsigned char enshow = 0;
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for(t = 0; t < len; t++)
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{
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temp = (num / lcd_pow(10, len - t- 1)) % 10;
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if(enshow == 0 && t < (len - 1))
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{
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if(temp == 0)
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{
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if(mode & 0X80) lcd_showchar(x + (size / 2) * t, y, '0', size, mode & 0X01);
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else lcd_showchar(x + (size / 2) * t, y , ' ', size, mode & 0X01);
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continue;
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}else enshow=1;
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}
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lcd_showchar( x + (size / 2) * t, y, temp + '0' , size , mode & 0X01);
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}
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}
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/*
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* @description : 显示一串字符串
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* @param - x : 起始坐标点X轴。
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* @param - y : 起始坐标点Y轴。
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* @param - width : 字符串显示区域长度
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* @param - height : 字符串显示区域高度
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* @param - size : 字体大小
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* @param - p : 要显示的字符串首地址
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* @return : 无
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*/
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void lcd_show_string(unsigned short x,unsigned short y,
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unsigned short width,unsigned short height,
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unsigned char size,char *p)
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{
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unsigned char x0 = x;
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width += x;
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height += y;
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while((*p <= '~') &&(*p >= ' ')) /* 判断是不是非法字符! */
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{
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if(x >= width) {x = x0; y += size;}
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if(y >= height) break; /* 退出 */
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lcd_showchar(x, y, *p , size, 0);
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x += size / 2;
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p++;
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}
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}
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