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/*
* BRLTTY - A background process providing access to the console screen (when in
* text mode) for a blind person using a refreshable braille display.
*
* Copyright (C) 1995-2016 by The BRLTTY Developers.
*
* BRLTTY comes with ABSOLUTELY NO WARRANTY.
*
* This is free software, placed under the terms of the
* GNU General Public License, as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any
* later version. Please see the file LICENSE-GPL for details.
*
* Web Page: http://brltty.com/
*
* This software is maintained by Dave Mielke <dave@mielke.cc>.
*/
#include "prologue.h"
#include <stdio.h>
#include "strfmt.h"
#include "alert.h"
#include "brl_cmds.h"
#include "unicode.h"
#include "scr.h"
#include "core.h"
void
alertLineSkipped (unsigned int *count) {
const unsigned int interval = 4;
if (!*count) {
alert(ALERT_SKIP_FIRST);
} else if (*count <= interval) {
alert(ALERT_SKIP_ONE);
} else if (!(*count % interval)) {
alert(ALERT_SKIP_SEVERAL);
}
*count += 1;
}
int
isTextOffset (int *arg, int end, int relaxed) {
int value = *arg;
if (value < textStart) return 0;
if ((value -= textStart) >= textCount) return 0;
if ((ses->winx + value) >= scr.cols) {
if (!relaxed) return 0;
value = scr.cols - 1 - ses->winx;
}
#ifdef ENABLE_CONTRACTED_BRAILLE
if (isContracted) {
int result = 0;
int index;
for (index=0; index<contractedLength; index+=1) {
int offset = contractedOffsets[index];
if (offset != CTB_NO_OFFSET) {
if (offset > value) {
if (end) result = index - 1;
break;
}
result = index;
}
}
if (end && (index == contractedLength)) result = contractedLength - 1;
value = result;
}
#endif /* ENABLE_CONTRACTED_BRAILLE */
*arg = value;
return 1;
}
int
getCharacterCoordinates (int arg, int *column, int *row, int end, int relaxed) {
if (arg == BRL_MSK_ARG) {
if (!SCR_CURSOR_OK()) return 0;
*column = scr.posx;
*row = scr.posy;
} else {
if (!isTextOffset(&arg, end, relaxed)) return 0;
*column = ses->winx + arg;
*row = ses->winy;
}
return 1;
}
STR_BEGIN_FORMATTER(formatCharacterDescription, int column, int row)
ScreenCharacter character;
readScreen(column, row, 1, 1, &character);
{
uint32_t text = character.text;
STR_PRINTF("char %" PRIu32 " (U+%04" PRIX32 "):", text, text);
}
{
static char *const colours[] = {
/* */ strtext("black"),
/* B */ strtext("blue"),
/* G */ strtext("green"),
/* GB */ strtext("cyan"),
/* R */ strtext("red"),
/* R B */ strtext("magenta"),
/* RG */ strtext("brown"),
/* RGB */ strtext("light grey"),
/* L */ strtext("dark grey"),
/* L B */ strtext("light blue"),
/* L G */ strtext("light green"),
/* L GB */ strtext("light cyan"),
/* LR */ strtext("light red"),
/* LR B */ strtext("light magenta"),
/* LRG */ strtext("yellow"),
/* LRGB */ strtext("white")
};
unsigned char attributes = character.attributes;
STR_PRINTF(" %s", gettext(colours[attributes & SCR_MASK_FG]));
STR_PRINTF(" on %s", gettext(colours[(attributes & SCR_MASK_BG) >> 4]));
}
if (character.attributes & SCR_ATTR_BLINK) {
STR_PRINTF(" %s", gettext("blink"));
}
{
char name[0X40];
if (getCharacterName(character.text, name, sizeof(name))) {
STR_PRINTF(" [%s]", name);
}
}
STR_END_FORMATTER
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