153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
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#include "sys.h"
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#include "lcd.h"
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#include "image2lcd.h"
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extern void LCD_Set_Window(u16 sx,u16 sy,u16 width,u16 height);
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extern void LCD_WR_REG(u8 data);
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//********************************************************************//
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//! 函数名:image_getcolor
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//! 功能:从8位数据获取16位颜色
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//! 输入:mode: 0:低位在前,高位在后; 1:高位在前,低位在后; str:数据指针;
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//! 输出:16位颜色
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//********************************************************************//
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u16 image_getcolor(u8 mode,u8 *str)
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{
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u16 color;
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if(mode)
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{
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color=((u16)*str++)<<8;
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color|=*str;
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}else
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{
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color=*str++;
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color|=((u16)*str)<<8;
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}
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return color;
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}
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//********************************************************************//
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//! 函数名:image_show
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//! 功能:在液晶上画图
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//! 输入:xsta,ysta,xend,yend:画图区域; scan:扫描方向; p:图像数组指针
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//! 输出:none
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//********************************************************************//
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void image_show(u16 xsta,u16 ysta,u16 xend,u16 yend,u8 scan,u8 *p)
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{
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u32 i;
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u32 len=0;
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//! 水平扫描
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if((scan&0x03)==0)
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{
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//! 判断扫描方向
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switch(scan>>6)
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{
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case 0:
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//! 从左到右,从上到下
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LCD_Scan_Dir(L2R_U2D);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xsta,ysta);
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break;
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case 1:
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//! 从左到右,从下到上
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LCD_Scan_Dir(L2R_D2U);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xsta,yend);
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break;
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case 2:
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//! 从右到左,从上到下
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LCD_Scan_Dir(R2L_U2D);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xend,ysta);
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break;
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case 3:
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//! 从右到左,从下到上
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LCD_Scan_Dir(R2L_D2U);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xend,yend);
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break;
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}
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}
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//! 垂直扫描
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else
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{
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//! 判断扫描方向
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switch(scan>>6)
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{
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case 0:
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//! 从上到下,从左到右
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LCD_Scan_Dir(U2D_L2R);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xsta,ysta);
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break;
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case 1:
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//! 从下到上,从左到右
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LCD_Scan_Dir(D2U_L2R);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xsta,yend);
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break;
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case 2:
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//! 从上到下,从右到左
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LCD_Scan_Dir(U2D_R2L);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xend,ysta);
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break;
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case 3:
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//! 从下到上,从右到左
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LCD_Scan_Dir(D2U_R2L);
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LCD_Set_Window(xsta,ysta,xend,yend);
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//! 设置光标位置
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LCD_SetCursor(xend,yend);
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break;
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}
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}
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//! 开始写入GRAM
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LCD_WriteRAM_Prepare();
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//! 写入数据长度
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len=(xend-xsta+1)*(yend-ysta+1);
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for(i=0;i<len;i++)
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{
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LCD_WR_DATA(image_getcolor(scan&(1<<4),p));
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p+=2;
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}
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//! 使用横屏
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#if USE_HORIZONTAL
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LCD_Set_Window(0,0,319,239);
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#else
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LCD_Set_Window(0,0,239,319);
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#endif
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}
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//********************************************************************//
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//! 函数名:image_display
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//! 功能:在指定位置显示图片
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//! 输入:x,y:指定位置; imgx:图片数据指针;
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//! 输出:none
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//********************************************************************//
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void image_display(u16 x,u16 y,u8 * imgx)
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{
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HEADCOLOR *imginfo;
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//! 得出HEADCOLOR结构体大小
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u8 ifosize=sizeof(HEADCOLOR);
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imginfo=(HEADCOLOR*)imgx;
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image_show(x,y,x+imginfo->w-1,y+imginfo->h-1,imginfo->scan,imgx+ifosize);
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}
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