c48ec3adff
This shouldn't change behavior (or even object code) at all because those assignments are all without effect. Removing that code removes noise which helps working with code analysis tools.
396 lines
12 KiB
C
396 lines
12 KiB
C
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* *
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* (c) Copyright 1993, 1994 Hewlett-Packard Company *
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* (c) Copyright 1993, 1994 International Business Machines Corp. *
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* (c) Copyright 1993, 1994 Sun Microsystems, Inc. *
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* (c) Copyright 1993, 1994 Novell, Inc. *
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*/
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#include "TermHeader.h"
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#include "TermPrimDebug.h"
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#include "TermPrimP.h"
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#include "TermPrimData.h"
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#include "TermPrimFunction.h"
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#include "TermPrimSetPty.h"
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/******************************************************************************
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*
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* #### ##### # ######
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* # # # # # #
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* # # # ### # ##### ###
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* # ##### ### # # ###
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* # # # # # # # #
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* #### # # # ###### # #
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*
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*
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* ##### #### ##### ## #####
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* # # # # # # # #
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* ##### #### ### # # # #####
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* # # # ### # ###### # #
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* # # # # # # # # # #
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* ##### #### # # # # #####
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*/
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void
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_DtTermPrimFuncLF(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget)w;
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struct termData *tpd = tw->term.tpd;
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/*
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** move the insert point...
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*/
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if (++tpd->cursorRow >= tw->term.rows)
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{
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/*
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** scroll one line...
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*/
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(void) _DtTermPrimScrollText(w, 1);
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tpd->cursorRow = tw->term.rows - 1;
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}
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(void) _DtTermPrimFillScreenGap(w);
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return;
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}
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void
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_DtTermPrimFuncBackspace(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget)w;
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struct termData *tpd = tw->term.tpd;
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if (tpd->cursorColumn > 0) {
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(void) tpd->cursorColumn--;
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}
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return;
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}
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void
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_DtTermPrimFuncCR(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget)w;
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struct termData *tpd = tw->term.tpd;
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tpd->cursorColumn = tpd->leftMargin;
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return;
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}
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/*** CURSOR MOTION ************************************************************
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*
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* #### # # ##### #### #### #####
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* # # # # # # # # # # #
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* # # # # # #### # # # #
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* # # # ##### # # # #####
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* # # # # # # # # # # # #
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* #### #### # # #### #### # #
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*
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*
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* # # #### ##### # #### # #
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* ## ## # # # # # # ## #
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* # ## # # # # # # # # # #
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* # # # # # # # # # # #
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* # # # # # # # # # ##
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* # # #### # # #### # #
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*/
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void
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_DtTermPrimFuncNextLine(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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/* move down...
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*/
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(void) _DtTermPrimCursorOff(w);
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while (count-- > 0) {
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if (tpd->cursorRow < tw->term.rows - 1) {
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(void) tpd->cursorRow++;
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} else {
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tpd->cursorRow = 0;
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}
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}
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return;
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}
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void
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_DtTermPrimFuncPreviousLine(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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/* move up...
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*/
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(void) _DtTermPrimCursorOff(w);
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while (count-- > 0) {
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if (tpd->cursorRow > 0) {
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tpd->cursorRow--;
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} else {
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tpd->cursorRow = tw->term.rows - 1;
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}
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}
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return;
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}
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void
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_DtTermPrimFuncBackwardCharacter(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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/* move left...
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*/
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(void) _DtTermPrimCursorOff(w);
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while (count-- > 0) {
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if (tpd->cursorColumn > 0) {
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(void) tpd->cursorColumn--;
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} else {
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/* past left edge -- wrap up... */
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tpd->cursorColumn = tw->term.columns - 1;
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if (tpd->cursorRow > 0) {
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(void) tpd->cursorRow--;
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} else {
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/* past first line -- wrap to bottom of screen... */
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tpd->cursorRow = tw->term.rows - 1;
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}
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}
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}
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return;
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}
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void
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_DtTermPrimFuncForwardCharacter(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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/* move right...
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*/
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(void) _DtTermPrimCursorOff(w);
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while (count-- > 0) {
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if (tpd->cursorColumn < tw->term.columns - 1) {
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(void) tpd->cursorColumn++;
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} else {
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/* past right edge -- wrap... */
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tpd->cursorColumn = 0;
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if (tpd->cursorRow < tw->term.rows - 1) {
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(void) tpd->cursorRow++;
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} else {
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/* past last line -- wrap to top of screen... */
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tpd->cursorRow = 0;
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}
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}
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}
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return;
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}
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void
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_DtTermPrimFuncReturn(Widget w, int count, FunctionSource functionSource)
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{
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Debug('i', fprintf(stderr,
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">>_DtTermPrimFuncReturn: not yet implemented\n"));
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}
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void
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_DtTermPrimFuncTab(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget)w;
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struct termData *tpd = tw->term.tpd;
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TermBuffer tBuffer = tpd->termBuffer;
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short nextTab;
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(void) _DtTermPrimCursorOff(w);
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if (tpd->cursorColumn < tpd->leftMargin) {
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/* move to left margin on current line... */
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tpd->cursorColumn = tpd->leftMargin;
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} else {
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/* Move to the next tab stop. Note that this cursor motion is
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* similar to the right arrow cursor motion in that
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* it doesn't set the line length until a character is entered.
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*/
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/* DKS: this code currently enforces tabs at every 8 character
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* positions. It needs to be worked on to support the margins/tabs
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* buffer...
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*/
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nextTab = _DtTermPrimBufferGetNextTab(tBuffer, tpd->cursorColumn);
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/* check to see if we are past the end of the line... */
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if ((nextTab <= 0) || (nextTab >= tpd->rightMargin)) {
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/* wrap to next line...
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*/
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tpd->cursorColumn = tpd->leftMargin;
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/* check to see if we scrolled off the bottom of the screen... */
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if (++tpd->cursorRow >= tw->term.rows) {
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/* scroll one line...
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*/
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(void)_DtTermPrimScrollText(w, 1);
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tpd->cursorRow = tw->term.rows - 1;
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}
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/* fill any screen gap... */
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if (tpd->topRow + tpd->cursorRow >= tpd->lastUsedRow) {
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(void) _DtTermPrimFillScreenGap(w);
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}
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} else {
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tpd->cursorColumn = nextTab;
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}
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}
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return;
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}
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/*** TAB FUNCTIONS ************************************************************
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*
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* ##### ## #####
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* # # # # #
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* # # # #####
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* # ###### # #
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* # # # # #
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* # # # #####
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*
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*
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* ###### # # # # #### ##### # #### # # ####
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* # # # ## # # # # # # # ## # #
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* ##### # # # # # # # # # # # # # ####
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* # # # # # # # # # # # # # # #
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* # # # # ## # # # # # # # ## # #
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* # #### # # #### # # #### # # ####
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*/
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void
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_DtTermPrimFuncTabSet(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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(void) _DtTermPrimBufferSetTab(tpd->termBuffer, tpd->cursorColumn);
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}
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void
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_DtTermPrimFuncTabClear(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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(void) _DtTermPrimBufferClearTab(tpd->termBuffer, tpd->cursorColumn);
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}
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void
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_DtTermPrimFuncTabClearAll(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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(void) _DtTermPrimBufferClearAllTabs(tpd->termBuffer);
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}
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/*** REDRAW DISPLAY ***********************************************************
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*
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* # # ## ##### #### # # #
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* ## ## # # # # # # # ## #
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* # ## # # # # # # # # # #
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* # # ###### ##### # ### # # # #
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* # # # # # # # # # # ##
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* # # # # # # #### # # #
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*
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*
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* ###### # # # # #### ##### # #### # # ####
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* # # # ## # # # # # # # ## # #
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* ##### # # # # # # # # # # # # # ####
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* # # # # # # # # # # # # # # #
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* # # # # ## # # # # # # # ## # #
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* # #### # # #### # # #### # # ####
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*/
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void
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_DtTermPrimFuncMarginSetLeft(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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if (tpd->cursorColumn < tpd->rightMargin) {
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tpd->leftMargin = tpd->cursorColumn;
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} else {
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_DtTermPrimBell(w);
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}
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return;
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}
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void
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_DtTermPrimFuncMarginSetRight(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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struct termData *tpd = tw->term.tpd;
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if (tpd->cursorColumn > tpd->leftMargin) {
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tpd->rightMargin = tpd->cursorColumn;
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} else {
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_DtTermPrimBell(w);
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}
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return;
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}
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void
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_DtTermPrimFuncMarginClear(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget)w;
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struct termData *tpd = tw->term.tpd;
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tpd->leftMargin = 0;
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tpd->rightMargin = tw->term.columns - 1;
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return;
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}
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/*** REDRAW DISPLAY ***********************************************************
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*
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* ##### ###### ##### ##### ## # #
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* # # # # # # # # # # #
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* # # ##### # # # # # # # #
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* ##### # # # ##### ###### # ## #
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* # # # # # # # # # ## ##
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* # # ###### ##### # # # # # #
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*
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*
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* ##### # #### ##### # ## # #
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* # # # # # # # # # # #
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* # # # #### # # # # # #
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* # # # # ##### # ###### #
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* # # # # # # # # # #
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* ##### # #### # ###### # # #
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*/
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void
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_DtTermPrimFuncRedrawDisplay(Widget w, int count, FunctionSource functionSource)
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{
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DtTermPrimitiveWidget tw = (DtTermPrimitiveWidget) w;
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(void) XClearArea(XtDisplay(w), XtWindow(w), 0, 0, 0, 0, True);
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return;
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}
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