freebsd-dev/contrib/ncurses/c++/cursespad.cc
Peter Wemm 7a69bbfb27 Import ncurses-5.2-20010512 onto the vendor branch
Obtained from: ftp://dickey.his.com/ncurses/
2001-05-17 08:21:06 +00:00

271 lines
7.2 KiB
C++

// * this is for making emacs happy: -*-Mode: C++;-*-
/****************************************************************************
* Copyright (c) 1999,2001 Free Software Foundation, Inc. *
* *
* 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, distribute with modifications, 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 COPYRIGHT HOLDERS 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. *
****************************************************************************/
/****************************************************************************
* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1999 *
****************************************************************************/
#include "internal.h"
#include "etip.h"
#include "cursesw.h"
MODULE_ID("$Id: cursespad.cc,v 1.4 2001/03/24 21:25:57 tom Exp $")
NCursesPad::NCursesPad(int lines, int cols)
: NCursesWindow(),
viewWin((NCursesWindow*)0),
viewSub((NCursesWindow*)0),
h_gridsize(0), v_gridsize(0),
min_row(0), min_col(0)
{
w = ::newpad(lines,cols);
if ((WINDOW*)0==w) {
count--;
err_handler("Cannot construct window");
}
alloced = TRUE;
}
int NCursesPad::driver (int key) {
// Default implementation
switch(key) {
case KEY_UP:
// =======
return REQ_PAD_UP;
case KEY_DOWN:
// =========
return REQ_PAD_DOWN;
case KEY_LEFT:
// =========
return REQ_PAD_LEFT;
case KEY_RIGHT:
// ==========
return REQ_PAD_RIGHT;
case KEY_EXIT:
// =========
case CTRL('X'):
// ==========
return REQ_PAD_EXIT;
default: return(key);
}
}
void NCursesPad::operator()(void) {
NCursesWindow* W = Win();
if ((NCursesWindow*)0 != W) {
int Width = W->width();
int Height = W->height();
int req = REQ_PAD_REFRESH;
W->keypad(TRUE);
W->meta(TRUE);
refresh();
do {
bool changed = FALSE;
switch (req) {
case REQ_PAD_REFRESH:
// ================
changed = TRUE;
break;
case REQ_PAD_LEFT:
// =============
if (min_col > 0) {
changed = TRUE;
if (min_col < h_gridsize)
min_col = 0;
else
min_col -= h_gridsize;
}
else
OnNavigationError(req);
break;
case REQ_PAD_RIGHT:
// ==============
if (min_col < (width() - Width - 1)) {
changed = TRUE;
if (min_col > (width() - Width - h_gridsize - 1))
min_col = width() - Width - 1;
else
min_col += h_gridsize;
}
else
OnNavigationError(req);
break;
case REQ_PAD_UP:
// ===========
if (min_row > 0) {
changed = TRUE;
if (min_row < v_gridsize)
min_row = 0;
else
min_row -= v_gridsize;
}
else
OnNavigationError(req);
break;
case REQ_PAD_DOWN:
// =============
if (min_row < (height() - Height - 1)) {
changed = TRUE;
if (min_row > (height() - Height - v_gridsize - 1))
min_row = height() - Height - 1;
else
min_row += v_gridsize;
}
else
OnNavigationError(req);
break;
default:
OnUnknownOperation(req);
}
if (changed) {
noutrefresh();
W->syncup();
OnOperation(req);
viewWin->refresh();
}
} while( (req=driver(W->getch())) != REQ_PAD_EXIT );
}
}
int NCursesPad::refresh() {
int res = noutrefresh();
if (res==OK && ((NCursesWindow*)0 != viewWin)) {
res = (viewWin->refresh());
}
return(res);
}
int NCursesPad::noutrefresh() {
int res = OK;
NCursesWindow* W = Win();
if ((NCursesWindow*)0 != W) {
res = copywin(*W,min_row,min_col,
0,0,W->maxy(),W->maxx(),
FALSE);
if (res==OK) {
W->syncup();
res = viewWin->noutrefresh();
}
}
return (res);
}
void NCursesPad::setWindow(NCursesWindow& view,
int v_grid NCURSES_PARAM_INIT(1),
int h_grid NCURSES_PARAM_INIT(1))
{
viewWin = &view;
min_row = min_col = 0;
if (h_grid <=0 || v_grid <= 0)
err_handler("Illegal Gridsize");
else {
h_gridsize = h_grid;
v_gridsize = v_grid;
}
}
void NCursesPad::setSubWindow(NCursesWindow& sub)
{
if ((NCursesWindow*)0 == viewWin)
err_handler("Pad has no viewport");
if (!viewWin->isDescendant(sub))
THROW(new NCursesException("NCursesFramePad", E_SYSTEM_ERROR));
viewSub = &sub;
}
void NCursesFramedPad::OnOperation(int pad_req) {
NCursesWindow* W = Win();
NCursesWindow* Win = getWindow();
if (((NCursesWindow*)0 != W) && ((NCursesWindow*)0 != Win)) {
int Width = W->width();
int Height = W->height();
int i, row, col, h_len, v_len;
h_len = (Width*Width + width() - 1)/width();
if (h_len==0)
h_len = 1;
if (h_len > Width)
h_len = Width;
v_len = (Height*Height + height() - 1)/height();
if (v_len==0)
v_len = 1;
if (v_len > Height)
v_len = Height;
col = (min_col * Width + width() - 1) / width();
if (col + h_len > Width)
col = Width - h_len;
row = (min_row * Height + height() - 1) / height();
if (row + v_len > Height)
row = Height - v_len;
Win->vline(1,Width+1,Height);
Win->attron(A_REVERSE);
if (v_len>=2) {
Win->addch(row+1,Width+1,ACS_UARROW);
for(i=2;i<v_len;i++)
Win->addch(row+i,Width+1,' ');
Win->addch(row+v_len,Width+1,ACS_DARROW);
}
else {
for(i=1;i<=v_len;i++)
Win->addch(row+i,Width+1,' ');
}
Win->attroff(A_REVERSE);
Win->hline(Height+1,1,Width);
Win->attron(A_REVERSE);
if (h_len >= 2) {
Win->addch(Height+1,col+1,ACS_LARROW);
for(i=2;i<h_len;i++)
Win->addch(Height+1,col+i,' ');
Win->addch(Height+1,col+h_len,ACS_RARROW);
}
else {
for(i=1;i<=h_len;i++)
Win->addch(Height+1,col+i,' ');
}
Win->attroff(A_REVERSE);
}
}