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firmare/framebuffer: Option to center text 

This is usefull, because actual width of proportional font text and display
width may not be known to application.
This commit is contained in:
Andreas Eversberg 2011-12-15 05:58:24 +01:00 committed by Harald Welte
parent 30dd87115c
commit 593d905f0f
2 changed files with 39 additions and 1 deletions
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20
src/target/firmware/fb/fb_bw8.c
View File

@ -189,7 +189,25 @@ fb_bw8_putstr(char *str,int maxwidth){
int bitmap_offs,bitmap_bit; // offset inside bitmap, bit number of pixel
int fb8_offs; // offset to current pixel in framebuffer
uint8_t and_mask,or_mask; // to draw on framebuffer
uint8_t *p; // pointer into framebuffer memory
uint8_t *p; // pointer into framebuffer memorya
int total_w; // total width
/* center, if maxwidth < 0 */
if (maxwidth < 0) {
total_w = 0;
/* count width of string */
for(p=str;*p;p++){
fchr = fb_font_get_char(font,*p);
if(!fchr) /* FIXME: Does '?' exist in every font? */
fchr = fb_font_get_char(font,'?');
total_w += fchr->width;
} // str
if (total_w <= framebuffer->width)
framebuffer->cursor_x =
(framebuffer->width - total_w) >> 1;
maxwidth = framebuffer->width;
}
x1 = framebuffer->cursor_x; // first col (incl!)
x2 = x1 + maxwidth - 1; // last col (incl!)

20
src/target/firmware/fb/fb_rgb332.c
View File

@ -205,6 +205,26 @@ int fb_rgb332_putstr(char *str,int maxwidth){
int byte_per_line; // depending on character width in font
int bitmap_offs,bitmap_bit; // offset inside bitmap, bit number of pixel
uint8_t *p,fgpixel,bgpixel; // pointer into framebuffer memory
int total_w; // total width
/* center, if maxwidth < 0 */
if (maxwidth < 0) {
total_w = 0;
/* count width of string */
for(p=str;*p;p++){
fchr = fb_font_get_char(font,*p);
if(!fchr) /* FIXME: Does '?' exist in every font? */
fchr = fb_font_get_char(font,'?');
total_w += fchr->width;
} // str
if (total_w <= framebuffer->width)
framebuffer->cursor_x =
(framebuffer->width - total_w) >> 1;
else
framebuffer->cursor_x = 1;
maxwidth = framebuffer->width;
}
x1 = framebuffer->cursor_x; // first col (incl!)
x2 = x1 + maxwidth - 1; // last col (incl!)