90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include "lcd.h"
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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// ==================================================
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// LCD library of useful functions for drivers
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// ==================================================
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// Drawn from the "base driver" which really was the precursor
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// to this library....
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// TODO: What should this really be? Probably should be in the
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// driver code or headers or something...
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void
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lib_hbar_static (Driver *drvthis, int x, int y, int len, int promille, int options, int cellwidth, int cc_offset)
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/*
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* This function places a hbar using the v0.5 API format and the given cellwidth.
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* It assumes that custom chars have been statically defined, so that number
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* 1 has 1 pixel, number 2 has 2 etc...
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* LCDs that have the custom chars at other char numbers than 0 should put the
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* first custom char number in cc_offset.
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*/
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{
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int total_pixels = ((long) 2 * len * cellwidth + 1 ) * promille / 2000;
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int pos;
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for (pos = 0; pos < len; pos ++ ) {
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int pixels = total_pixels - cellwidth * pos;
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if ( pixels >= cellwidth ) {
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/* write a "full" block to the screen... */
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#if defined(SEAMLESS_HBARS)
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drvthis->chr (drvthis, x+pos, y, cellwidth + cc_offset);
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#else
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drvthis->icon (drvthis, x+pos, y, ICON_BLOCK_FILLED);
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#endif
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}
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else if ( pixels > 0 ) {
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/* write a partial block... */
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drvthis->chr (drvthis, x+pos, y, pixels + cc_offset);
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break;
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}
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else {
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; /* write nothing (not even a space) */
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}
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}
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}
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void
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lib_vbar_static (Driver *drvthis, int x, int y, int len, int promille, int options, int cellheight, int cc_offset)
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/*
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* This function places a vbar using the v0.5 API format and the given cellwidth.
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* It assumes that custom chars have been statically defined, so that number
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* 1 has 1 pixel, number 2 has 2 etc., just like in good old times...
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* LCDs that have the custom chars at other char numbers than 0 should put the
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* first custom char number in cc_offset.
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*/
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{
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int total_pixels = ((long) 2 * len * cellheight + 1 ) * promille / 2000;
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int pos;
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for (pos = 0; pos < len; pos ++ ) {
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int pixels = total_pixels - cellheight * pos;
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if ( pixels >= cellheight ) {
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/* write a "full" block to the screen... */
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drvthis->icon (drvthis, x, y-pos, ICON_BLOCK_FILLED);
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}
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else if ( pixels > 0 ) {
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/* write a partial block... */
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drvthis->chr (drvthis, x, y-pos, pixels + cc_offset);
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break;
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}
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else {
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; /* write nothing (not even a space) */
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}
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}
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}
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