271 lines
7.2 KiB
C++
271 lines
7.2 KiB
C++
// * this is for making emacs happy: -*-Mode: C++;-*-
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/****************************************************************************
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* Copyright (c) 1999,2001 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Juergen Pfeifer <juergen.pfeifer@gmx.net> 1999 *
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****************************************************************************/
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#include "internal.h"
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#include "etip.h"
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#include "cursesw.h"
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MODULE_ID("$Id: cursespad.cc,v 1.4 2001/03/24 21:25:57 tom Exp $")
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NCursesPad::NCursesPad(int lines, int cols)
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: NCursesWindow(),
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viewWin((NCursesWindow*)0),
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viewSub((NCursesWindow*)0),
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h_gridsize(0), v_gridsize(0),
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min_row(0), min_col(0)
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{
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w = ::newpad(lines,cols);
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if ((WINDOW*)0==w) {
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count--;
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err_handler("Cannot construct window");
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}
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alloced = TRUE;
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}
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int NCursesPad::driver (int key) {
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// Default implementation
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switch(key) {
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case KEY_UP:
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// =======
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return REQ_PAD_UP;
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case KEY_DOWN:
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// =========
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return REQ_PAD_DOWN;
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case KEY_LEFT:
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// =========
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return REQ_PAD_LEFT;
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case KEY_RIGHT:
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// ==========
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return REQ_PAD_RIGHT;
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case KEY_EXIT:
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// =========
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case CTRL('X'):
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// ==========
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return REQ_PAD_EXIT;
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default: return(key);
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}
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}
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void NCursesPad::operator()(void) {
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NCursesWindow* W = Win();
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if ((NCursesWindow*)0 != W) {
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int Width = W->width();
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int Height = W->height();
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int req = REQ_PAD_REFRESH;
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W->keypad(TRUE);
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W->meta(TRUE);
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refresh();
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do {
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bool changed = FALSE;
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switch (req) {
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case REQ_PAD_REFRESH:
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// ================
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changed = TRUE;
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break;
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case REQ_PAD_LEFT:
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// =============
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if (min_col > 0) {
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changed = TRUE;
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if (min_col < h_gridsize)
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min_col = 0;
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else
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min_col -= h_gridsize;
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}
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else
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OnNavigationError(req);
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break;
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case REQ_PAD_RIGHT:
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// ==============
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if (min_col < (width() - Width - 1)) {
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changed = TRUE;
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if (min_col > (width() - Width - h_gridsize - 1))
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min_col = width() - Width - 1;
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else
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min_col += h_gridsize;
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}
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else
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OnNavigationError(req);
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break;
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case REQ_PAD_UP:
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// ===========
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if (min_row > 0) {
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changed = TRUE;
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if (min_row < v_gridsize)
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min_row = 0;
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else
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min_row -= v_gridsize;
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}
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else
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OnNavigationError(req);
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break;
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case REQ_PAD_DOWN:
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// =============
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if (min_row < (height() - Height - 1)) {
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changed = TRUE;
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if (min_row > (height() - Height - v_gridsize - 1))
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min_row = height() - Height - 1;
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else
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min_row += v_gridsize;
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}
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else
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OnNavigationError(req);
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break;
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default:
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OnUnknownOperation(req);
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}
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if (changed) {
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noutrefresh();
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W->syncup();
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OnOperation(req);
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viewWin->refresh();
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}
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} while( (req=driver(W->getch())) != REQ_PAD_EXIT );
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}
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}
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int NCursesPad::refresh() {
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int res = noutrefresh();
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if (res==OK && ((NCursesWindow*)0 != viewWin)) {
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res = (viewWin->refresh());
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}
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return(res);
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}
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int NCursesPad::noutrefresh() {
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int res = OK;
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NCursesWindow* W = Win();
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if ((NCursesWindow*)0 != W) {
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res = copywin(*W,min_row,min_col,
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0,0,W->maxy(),W->maxx(),
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FALSE);
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if (res==OK) {
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W->syncup();
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res = viewWin->noutrefresh();
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}
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}
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return (res);
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}
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void NCursesPad::setWindow(NCursesWindow& view,
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int v_grid NCURSES_PARAM_INIT(1),
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int h_grid NCURSES_PARAM_INIT(1))
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{
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viewWin = &view;
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min_row = min_col = 0;
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if (h_grid <=0 || v_grid <= 0)
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err_handler("Illegal Gridsize");
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else {
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h_gridsize = h_grid;
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v_gridsize = v_grid;
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}
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}
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void NCursesPad::setSubWindow(NCursesWindow& sub)
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{
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if ((NCursesWindow*)0 == viewWin)
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err_handler("Pad has no viewport");
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if (!viewWin->isDescendant(sub))
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THROW(new NCursesException("NCursesFramePad", E_SYSTEM_ERROR));
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viewSub = ⊂
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}
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void NCursesFramedPad::OnOperation(int pad_req) {
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NCursesWindow* W = Win();
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NCursesWindow* Win = getWindow();
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if (((NCursesWindow*)0 != W) && ((NCursesWindow*)0 != Win)) {
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int Width = W->width();
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int Height = W->height();
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int i, row, col, h_len, v_len;
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h_len = (Width*Width + width() - 1)/width();
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if (h_len==0)
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h_len = 1;
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if (h_len > Width)
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h_len = Width;
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v_len = (Height*Height + height() - 1)/height();
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if (v_len==0)
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v_len = 1;
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if (v_len > Height)
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v_len = Height;
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col = (min_col * Width + width() - 1) / width();
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if (col + h_len > Width)
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col = Width - h_len;
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row = (min_row * Height + height() - 1) / height();
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if (row + v_len > Height)
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row = Height - v_len;
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Win->vline(1,Width+1,Height);
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Win->attron(A_REVERSE);
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if (v_len>=2) {
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Win->addch(row+1,Width+1,ACS_UARROW);
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for(i=2;i<v_len;i++)
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Win->addch(row+i,Width+1,' ');
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Win->addch(row+v_len,Width+1,ACS_DARROW);
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}
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else {
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for(i=1;i<=v_len;i++)
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Win->addch(row+i,Width+1,' ');
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}
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Win->attroff(A_REVERSE);
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Win->hline(Height+1,1,Width);
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Win->attron(A_REVERSE);
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if (h_len >= 2) {
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Win->addch(Height+1,col+1,ACS_LARROW);
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for(i=2;i<h_len;i++)
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Win->addch(Height+1,col+i,' ');
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Win->addch(Height+1,col+h_len,ACS_RARROW);
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}
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else {
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for(i=1;i<=h_len;i++)
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Win->addch(Height+1,col+i,' ');
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}
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Win->attroff(A_REVERSE);
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}
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}
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