Compress fonts a little. Chop of space at beginning and end
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7647b79033
commit
99456e3ce0
50
lcd/render.c
50
lcd/render.c
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@ -9,7 +9,7 @@ char font_direction = FONT_DIR_LTR;
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/* Exported Functions */
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int DoChar(int sx, int sy, char c){
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int x;
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int x=0;
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int y;
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/* how many bytes is it high? */
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@ -18,41 +18,60 @@ int DoChar(int sx, int sy, char c){
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/* "real" coordinates. Our physical display is upside down */
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int rx=RESX-sx-1;
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int ry=RESY-sy-font->u8Height;
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// int ry=RESY-sy-height*8;
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/* Does this font provide this character? */
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if(c<font->u8FirstChar || c>font->u8LastChar)
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c=font->u8FirstChar+1; // error
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/* starting offset into character source data */
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int off,width,blank;
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int off,width,preblank,blank;
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if(font->u8Width==0){
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off=font->charInfo[c-font->u8FirstChar].offset;
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width=font->charInfo[c-font->u8FirstChar].widthBits;
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// width=(font->charInfo[c-font->u8FirstChar].offset-off)/8;
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preblank=0;
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blank=1;
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}else if(font->u8Width==1){
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FONT_CHAR_INFO_v2 * fci=(FONT_CHAR_INFO_v2*)font->charInfo;
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off=0;
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width=fci[c-font->u8FirstChar].widthBits;
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for(y=0;y<c-font->u8FirstChar;y++)
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off+=fci[y].widthBits;
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off*=height;
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preblank=fci[y].preblank;
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blank=fci[y].blank;
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}else{
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off=(c-font->u8FirstChar)*font->u8Width*height;
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width=font->u8Width;
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preblank=0;
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blank=0;
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};
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// boundary sanity checks
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if(sx<0 || sy<0 || sx >= RESX || (sy+font->u8Height) >= RESY)
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return sx; // nothing printed.
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/* raw character data */
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int byte;
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unsigned char mask;
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/* print forward or backward? */
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int dmul=0;
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if(font_direction==FONT_DIR_RTL)
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if(font_direction==FONT_DIR_RTL){
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dmul=1;
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else if (font_direction==FONT_DIR_LTR)
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if(sx-(width+preblank+blank)<=0) // sanity check for left side
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return sx;
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} else if (font_direction==FONT_DIR_LTR){
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dmul=-1;
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if(sx+(width+preblank+blank)>=RESX) // sanity check for right side
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return sx;
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};
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/* break down the position on byte boundaries */
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char yidx=ry/8;
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char yoff=ry%8;
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rx+=dmul*preblank;
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/* multiple 8-bit-lines */
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for(y=0;y<=height;y++){
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int m=yoff+font->u8Height-8*y;
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@ -61,19 +80,19 @@ int DoChar(int sx, int sy, char c){
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mask=255<<(8-m);
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if(y==0){
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mask=mask>>(yoff);
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} else if(y==height){
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// mask=mask<<((8-(font->u8Height%8))%8);
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// mask=mask<<(8-yoff);
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mask=mask>>yoff;
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};
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if(mask==0)
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if(mask==0) // Optimize :-)
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break;
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// buffer[(rx-dmul)+(yidx+y)*RESX]=5;
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if(font_direction==FONT_DIR_LTR)
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flip(mask);
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for(m=1;m<=preblank;m++){
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buffer[(rx-dmul*(m))+(yidx+y)*RESX]&=~mask;
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};
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for(x=0;x<width;x++){
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unsigned char b1,b2;
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if(y==0)
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@ -92,12 +111,11 @@ int DoChar(int sx, int sy, char c){
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buffer[(rx+dmul*x)+(yidx+y)*RESX]&=~mask;
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buffer[(rx+dmul*x)+(yidx+y)*RESX]|=byte;
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};
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if(blank){
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buffer[(rx+dmul*x)+(yidx+y)*RESX]&=~mask;
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for(m=0;m<blank;m++){
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buffer[(rx+dmul*(x+m))+(yidx+y)*RESX]&=~mask;
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};
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};
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return sx-dmul*(x+blank);
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return sx-dmul*(x+preblank+blank);
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};
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int DoString(int sx, int sy, char *s){
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