void SetFntNum(int32_t k, void* parent /* dvi/vf */)
/* this routine is used to specify the font to be used in printing future
characters */
{
struct font_num *tfontnump=NULL; /* temporary font_num pointer */
switch (((struct font_entry*)parent)->type) {
case FONT_TYPE_VF:
tfontnump = ((struct font_entry*)parent)->vffontnump;
break;
case DVI_TYPE:
tfontnump = ((struct dvi_data*)parent)->fontnump;
}
while (tfontnump != NULL && tfontnump->k != k)
tfontnump = tfontnump->next;
if (tfontnump == NULL)
Fatal("font %d undefined", k);
currentfont = tfontnump->fontp;
if (currentfont->name==NULL)
FontFind(currentfont);
}
void LcdDisplayStr(u8 xStart, u8 yStart, u8 xEnd, u8 yEnd, FontType_Enum font, u8 align, const char *str, eat_bool update)
{
u8 x, y, ix, iy, cur_x, cur_x2, cur_y;
u8 width, height;
FontInfo_Struct fontInfo;
const u8 *fontData;
const char *p;
if(font >= FONT_TYPE_NUM)
return;
if(str == NULL)
return;
if(xEnd < xStart)
return;
if(yEnd < yStart)
return;
/* 获取高度&宽度 */
p = str;
width = 0;
height = 0;
while(*p != 0)
{
/* 取字库信息 */
fontData = FontFind(*p, font, &fontInfo);
if(fontData != NULL)
{
width += fontInfo.width;
#if defined(CHAR_SPACE_PIXEL)
width += CHAR_SPACE_PIXEL;
#endif
if(fontInfo.height > height)
height = fontInfo.height;
}
p++;
}
switch(align&LCD_ALIGN_V)
{
case LCD_ALIGN_V_UP:
y = yStart;
break;
case LCD_ALIGN_V_DOWN:
if((yStart+height) > yEnd)
y = yStart;
else
y = yEnd-height-1;
break;
default:
if((yStart+height) > yEnd)
y = yStart;
else
y = yStart + ((yEnd - yStart - height) / 2);
break;
}
switch(align&LCD_ALIGN_H)
{
case LCD_ALIGN_H_LEFT:
x = xStart;
break;
case LCD_ALIGN_H_RIGHT:
if((xStart+width) > xEnd)
x = xStart;
else
x = xEnd-width-1;
break;
default:
if((xStart+width) > xEnd)
x = xStart;
else
x = xStart + ((xEnd - xStart - width) / 2);
break;
}
LcdDisplayClear(xStart, yStart, xEnd, yEnd, EAT_FALSE);
p = str;
cur_x = x;
while(*p != 0)
{
/* 取字库信息 */
fontData = FontFind(*p, font, &fontInfo);
if(fontData != NULL)
{
/* 字库转换为显示数据 */
cur_y = y;
for(iy=0; iy<fontInfo.height; iy++)
{
cur_x2 = cur_x;
for(ix=0; ix<fontInfo.width; ix++)
{
if((fontData[iy*((fontInfo.width+7)/8) + ix/8] & (1<<(ix%8))))
{
M_SetLcdDisplayData(cur_x2, cur_y);
}
else
{
M_ClearLcdDisplayData(cur_x2, cur_y);
}
cur_x2++;
if(cur_x2 > xEnd)
break;
}
cur_y++;
if(cur_y > yEnd)
break;
}
cur_x += fontInfo.width;
#if defined(CHAR_SPACE_PIXEL)
cur_x += CHAR_SPACE_PIXEL;
#endif
if(cur_x > xEnd)
break;
}
p++;
}
if(update == EAT_TRUE)
{
LcdUpdate(xStart, yStart, xEnd, yEnd);
}
}
