Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 226 insertions, 0 deletions

diff --git a/nx-X11/programs/xterm/testxmc.c b/nx-X11/programs/xterm/testxmc.c
new file mode 100644
index 000000000..60c1f14b4
--- /dev/null
+++ b/nx-X11/programs/xterm/testxmc.c
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+/* $XTermId: testxmc.c,v 1.30 2005/08/05 01:25:40 tom Exp $ */
+
+/*
+ * $XFree86: xc/programs/xterm/testxmc.c,v 3.13 2005/08/05 01:25:40 dickey Exp $
+ */
+
+/************************************************************
+
+Copyright 1997-2004,2005 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)  (my_attrs & a) != 0 && (term->flags & (whichone = a)) == 0
+#define MARK_OFF(a) (my_attrs & a) != 0 && (term->flags & (whichone = a)) != 0
+
+void
+Mark_XMC(TScreen * screen, int param)
+{
+    static IChar *glitch;
+    Bool found = False;
+    Char my_attrs = (screen->xmc_attributes & XMC_FLAGS);
+    Char 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((term->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 = term->flags;
+	term->flags ^= whichone;
+	TRACE(("XMC Writing glitch (%d/%d) after SGR %d\n", my_attrs,
+	       whichone, param));
+	dotext(screen, '?', glitch, screen->xmc_glitch);
+	term->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(TScreen * screen)
+{
+    if (!screen->move_sgr_ok
+	&& screen->cur_col <= CurMaxCol(screen, screen->cur_row)) {
+	Mark_XMC(screen, -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(TScreen * screen)
+{
+    Bool changed = False;
+    Char start;
+    Char my_attrs = (screen->xmc_attributes & XMC_FLAGS);
+    int row = screen->cur_row;
+    int col = screen->cur_col;
+
+    /* Find the preceding cell.
+     */
+    if (getXtermCell(screen, row, col) != XMC_GLITCH) {
+	if (col != 0) {
+	    col--;
+	} else if (!screen->xmc_inline && row != 0) {
+	    row--;
+	    col = CurMaxCol(screen, row);
+	}
+    }
+    start = (SCRN_BUF_ATTRS(screen, row)[col] & my_attrs);
+
+    /* Now propagate the starting state until we reach a cell which holds
+     * a glitch.
+     */
+    for (;;) {
+	if (col < CurMaxCol(screen, row)) {
+	    col++;
+	} else if (!screen->xmc_inline && row < screen->max_row) {
+	    row++;
+	    col = 0;
+	} else
+	    break;
+	if (getXtermCell(screen, row, col) == XMC_GLITCH)
+	    break;
+	if ((SCRN_BUF_ATTRS(screen, row)[col] & my_attrs) != start) {
+	    SCRN_BUF_ATTRS(screen, row)[col] = start |
+		(SCRN_BUF_ATTRS(screen, row)[col] & ~my_attrs);
+	    changed = True;
+	}
+    }
+
+    TRACE(("XMC %s (%s:%d/%d) from %d,%d to %d,%d\n",
+	   changed ? "Ripple" : "Nochange",
+	   BtoS(term->flags & my_attrs),
+	   my_attrs, start,
+	   screen->cur_row, screen->cur_col,
+	   row, col));
+
+    if (changed) {
+	ScrnUpdate(screen, screen->cur_row, 0, row + 1 - screen->cur_row,
+		   MaxCols(screen), True);
+    }
+}