228 lines
6.7 KiB
C
228 lines
6.7 KiB
C
/* $XTermId: testxmc.c,v 1.48 2011/09/11 14:59:40 tom Exp $ */
|
|
|
|
/*
|
|
* Copyright 1997-2010,2011 by Thomas E. Dickey
|
|
*
|
|
* All Rights Reserved
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
|
|
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*
|
|
* Except as contained in this notice, the name(s) of the above copyright
|
|
* holders shall not be used in advertising or otherwise to promote the
|
|
* sale, use or other dealings in this Software without prior written
|
|
* authorization.
|
|
*/
|
|
|
|
/*
|
|
* This module provides test support for curses applications that must work
|
|
* with terminals that have the xmc (magic cookie) glitch. The xmc_glitch
|
|
* resource denotes the number of spaces that are emitted when switching to or
|
|
* from standout (reverse) mode. Some terminals implement this by storing the
|
|
* attribute controls in the character cell that is skipped. So if the cell is
|
|
* overwritten by text, then the attribute change in the cell is cancelled,
|
|
* causing attributes to the left of the change to propagate.
|
|
*
|
|
* We implement the glitch by writing a character that won't be mistaken for
|
|
* other normal characters (and mapping normal writes to that character to a
|
|
* different one).
|
|
*
|
|
* Since xmc isn't normally part of xterm, we document it here rather than in
|
|
* the man-page. This module is driven by resources rather than by the
|
|
* termcap/terminfo description to make it a little more flexible for testing
|
|
* purposes.
|
|
*
|
|
* Resources:
|
|
*
|
|
* xmcGlitch (class XmcGlitch)
|
|
* When true, enables this extension. The default is `0', which disables
|
|
* the module. (termcap sg, terminfo xmc).
|
|
*
|
|
* xmcAttributes (class XmcAttributes)
|
|
* The attributes for which we'll generate a glitch, as a bitmask.
|
|
*
|
|
* INVERSE 1
|
|
* UNDERLINE 2
|
|
* BOLD 4
|
|
* BLINK 8
|
|
*
|
|
* The default is `1' (INVERSE). Some terminals emit glitches for
|
|
* underline. Just for completeness, we recognize all of the video
|
|
* attributes.
|
|
*
|
|
* xmcInline (class XmcInline)
|
|
* When true, limits the extent of an SGR change to the current line.
|
|
* The default is `false'. (No termcap or terminfo equivalent, though
|
|
* there are comments in some entries relating to this issue).
|
|
*
|
|
* xmcMoveSGR (class XmcMoveSGR)
|
|
* When false, a cursor movement will leave a glitch when SGR's are
|
|
* active. The default is `true'. (termcap ms, terminfo msgr).
|
|
*
|
|
* TODO:
|
|
* When xmc is active, the terminfo max_attributes (ma) capability is
|
|
* assumed to be 1.
|
|
*
|
|
* The xmcAttributes resource should also apply to alternate character
|
|
* sets and to color.
|
|
*/
|
|
|
|
#include <xterm.h>
|
|
#include <data.h>
|
|
|
|
#define MARK_ON(a) (Bool) ((my_attrs & a) != 0 && (xw->flags & (whichone = CharOf(a))) == 0)
|
|
#define MARK_OFF(a) (Bool) ((my_attrs & a) != 0 && (xw->flags & (whichone = CharOf(a))) != 0)
|
|
|
|
void
|
|
Mark_XMC(XtermWidget xw, int param)
|
|
{
|
|
static IChar *glitch;
|
|
|
|
TScreen *screen = TScreenOf(xw);
|
|
Bool found = False;
|
|
unsigned my_attrs = CharOf(screen->xmc_attributes & XMC_FLAGS);
|
|
unsigned whichone = 0;
|
|
|
|
if (glitch == 0) {
|
|
unsigned len = screen->xmc_glitch;
|
|
glitch = TypeMallocN(IChar, len);
|
|
while (len--)
|
|
glitch[len] = XMC_GLITCH;
|
|
}
|
|
switch (param) {
|
|
case -1: /* DEFAULT */
|
|
case 0: /* FALLTHRU */
|
|
found = MARK_OFF((xw->flags & XMC_FLAGS));
|
|
break;
|
|
case 1:
|
|
found = MARK_ON(BOLD);
|
|
break;
|
|
case 4:
|
|
found = MARK_ON(UNDERLINE);
|
|
break;
|
|
case 5:
|
|
found = MARK_ON(BLINK);
|
|
break;
|
|
case 7:
|
|
found = MARK_ON(INVERSE);
|
|
break;
|
|
case 22:
|
|
found = MARK_OFF(BOLD);
|
|
break;
|
|
case 24:
|
|
found = MARK_OFF(UNDERLINE);
|
|
break;
|
|
case 25:
|
|
found = MARK_OFF(BLINK);
|
|
break;
|
|
case 27:
|
|
found = MARK_OFF(INVERSE);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Write a glitch with the attributes temporarily set to the new(er)
|
|
* ones.
|
|
*/
|
|
if (found) {
|
|
unsigned save = xw->flags;
|
|
xw->flags ^= whichone;
|
|
TRACE(("XMC Writing glitch (%d/%d) after SGR %d\n", my_attrs,
|
|
whichone, param));
|
|
dotext(xw, '?', glitch, screen->xmc_glitch);
|
|
xw->flags = save;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Force a glitch on cursor movement when we're in standout mode and not at the
|
|
* end of a line.
|
|
*/
|
|
void
|
|
Jump_XMC(XtermWidget xw)
|
|
{
|
|
TScreen *screen = TScreenOf(xw);
|
|
if (!screen->move_sgr_ok
|
|
&& screen->cur_col <= LineMaxCol(screen,
|
|
getLineData(screen, screen->cur_row))) {
|
|
Mark_XMC(xw, -1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* After writing text to the screen, resolve mismatch between the current
|
|
* location and any attributes that would have been set by preceding locations.
|
|
*/
|
|
void
|
|
Resolve_XMC(XtermWidget xw)
|
|
{
|
|
TScreen *screen = TScreenOf(xw);
|
|
LineData *ld;
|
|
Bool changed = False;
|
|
Char start;
|
|
Char my_attrs = CharOf(screen->xmc_attributes & XMC_FLAGS);
|
|
int row = screen->cur_row;
|
|
int col = screen->cur_col;
|
|
|
|
/* Find the preceding cell.
|
|
*/
|
|
ld = getLineData(screen, row);
|
|
if (ld->charData[col] != XMC_GLITCH) {
|
|
if (col != 0) {
|
|
col--;
|
|
} else if (!screen->xmc_inline && row != 0) {
|
|
ld = getLineData(screen, --row);
|
|
col = LineMaxCol(screen, ld);
|
|
}
|
|
}
|
|
start = (ld->attribs[col] & my_attrs);
|
|
|
|
/* Now propagate the starting state until we reach a cell which holds
|
|
* a glitch.
|
|
*/
|
|
for (;;) {
|
|
if (col < LineMaxCol(screen, ld)) {
|
|
col++;
|
|
} else if (!screen->xmc_inline && row < screen->max_row) {
|
|
col = 0;
|
|
ld = getLineData(screen, ++row);
|
|
} else
|
|
break;
|
|
if (ld->charData[col] == XMC_GLITCH)
|
|
break;
|
|
if ((ld->attribs[col] & my_attrs) != start) {
|
|
ld->attribs[col] =
|
|
CharOf(start | (ld->attribs[col] & ~my_attrs));
|
|
changed = True;
|
|
}
|
|
}
|
|
|
|
TRACE(("XMC %s (%s:%d/%d) from %d,%d to %d,%d\n",
|
|
changed ? "Ripple" : "Nochange",
|
|
BtoS(xw->flags & my_attrs),
|
|
my_attrs, start,
|
|
screen->cur_row, screen->cur_col,
|
|
row, col));
|
|
|
|
if (changed) {
|
|
ScrnUpdate(xw, screen->cur_row, 0, row + 1 - screen->cur_row,
|
|
MaxCols(screen), True);
|
|
}
|
|
}
|