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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*/
#include "stdafx.h"
#include "console.h"
#include "newgui.h"
#include "common/engine.h"
/*
_ _ _ _ _ _
| | | |_ __ __| | ___ _ __ ___ ___ _ __ ___| |_ _ __ _ _ ___| |_(_) ___ _ __
| | | | '_ \ / _` |/ _ \ '__| / __/ _ \| '_ \/ __| __| '__| | | |/ __| __| |/ _ \| '_ \
| |_| | | | | (_| | __/ | | (_| (_) | | | \__ \ |_| | | |_| | (__| |_| | (_) | | | |
\___/|_| |_|\__,_|\___|_| \___\___/|_| |_|___/\__|_| \__,_|\___|\__|_|\___/|_| |_|
This code is not finished, so please don't complain :-)
*/
#define PROMPT "$ "
/* TODO:
* - it is very inefficient to redraw the full thingy when just one char is added/removed.
* Instead, we could just copy the GFX of the blank console (i.e. after the transparent
* background is drawn, before any text is drawn). Then using that, it becomes trivial
* to erase a single character, do scrolling etc.
* - add a scrollbar widget to allow scrolling in the history
* - a *lot* of others things, this code is in no way complete and heavily under progress
*/
ConsoleDialog::ConsoleDialog(NewGui *gui)
: Dialog(gui, 0, 0, 320, 6*kLineHeight+2)
{
_lineWidth = (_w - 2) / kCharWidth;
_linesPerPage = (_h - 2) / kLineHeight;
memset(_buffer, ' ', kBufferSize);
_linesInBuffer = kBufferSize / _lineWidth;
_currentColumn = 0;
_currentLine = 0;
_scrollLine = _linesPerPage - 1;
print("ScummVM "SCUMMVM_VERSION" (" SCUMMVM_CVS ")\n");
print("Console is ready\n");
print(PROMPT);
_promptLine = _currentLine;
_caretVisible = false;
_caretTime = 0;
}
void ConsoleDialog::drawDialog()
{
// Blend over the background
_gui->blendRect(_x, _y, _w, _h, _gui->_bgcolor, 2);
// Draw a border
_gui->hline(_x, _y+_h-1, _x+_w-1, _gui->_color);
// Draw text
int start = _scrollLine - _linesPerPage + 1;
int y = _y + 2;
for (int line = 0; line < _linesPerPage; line++) {
int x = _x + 1;
for (int column = 0; column < _lineWidth; column++) {
int l = (start+line) % _linesInBuffer;
byte c = _buffer[l * _lineWidth + column];
_gui->drawChar(c, x, y, _gui->_textcolor);
x += kCharWidth;
}
y += kLineHeight;
}
// Finally blit it all to the screen
_gui->addDirtyRect(_x, _y, _w, _h);
}
void ConsoleDialog::handleTickle()
{
uint32 time = _gui->get_time();
if (_caretTime < time) {
_caretTime = time + kCaretBlinkTime;
if (_caretVisible) {
drawCaret(true);
} else {
drawCaret(false);
}
}
}
void ConsoleDialog::handleKeyDown(uint16 ascii, int keycode, int modifiers) {
switch (keycode) {
case '\n': // enter/return
case '\r':
nextLine();
print(PROMPT);
_promptLine = _currentLine;
if (_caretVisible)
drawCaret(true);
draw();
break;
case 27: // escape
close();
break;
case 8: // backspace
if (_currentColumn == 0 && _currentLine > _promptLine) {
_currentColumn = _lineWidth - 1;
_currentLine--;
} else if (_currentColumn > 0) {
if (_currentLine > _promptLine || _currentColumn >= (int)sizeof(PROMPT))
_currentColumn--;
}
_buffer[(_currentLine % _linesInBuffer) * _lineWidth + _currentColumn] = ' ';
if (_caretVisible)
drawCaret(true);
draw(); // FIXME - not nice to redraw the full console just for one char!
break;
default:
if (ascii == '~' || ascii == '#') {
close();
} else if (isprint((char)ascii)) {
putchar(ascii);
}
}
}
void ConsoleDialog::nextLine()
{
_currentColumn = 0;
if (_currentLine == _scrollLine)
_scrollLine++;
_currentLine++;
}
int ConsoleDialog::printf(const char *format, ...)
{
va_list argptr;
va_start(argptr, format);
int count = this->vprintf(format, argptr);
va_end (argptr);
return count;
}
int ConsoleDialog::vprintf(const char *format, va_list argptr)
{
char buf[2048];
int count = vsnprintf(buf, sizeof(buf), format, argptr);
print(buf);
return count;
}
void ConsoleDialog::putchar(int c)
{
if (c == '\n')
nextLine();
else {
int pos = (_currentLine % _linesInBuffer) * _lineWidth + _currentColumn;
_buffer[pos] = (char)c;
_currentColumn++;
if (_currentColumn >= _lineWidth)
nextLine();
}
draw(); // FIXME - not nice to redraw the full console just for one char!
}
void ConsoleDialog::print(const char *str)
{
int pos = (_currentLine % _linesInBuffer) * _lineWidth + _currentColumn;
while (*str) {
if (*str == '\n') {
nextLine();
pos += _lineWidth - _currentColumn;
} else {
_buffer[pos++] = *str;
_currentColumn++;
if (_currentColumn >= _lineWidth)
nextLine();
}
pos %= kBufferSize;
str++;
}
draw();
}
void ConsoleDialog::drawCaret(bool erase)
{
// Only draw if item is visible
if (!isVisible())
return;
int displayLine = _currentLine - _scrollLine + _linesPerPage - 1;
if (displayLine < 0 || displayLine >= _linesPerPage)
return;
int x = _x + 1 + _currentColumn * kCharWidth;
int y = _y + displayLine * kLineHeight;
_gui->fillRect(x, y, kCharWidth, kLineHeight, erase ? _gui->_bgcolor : _gui->_textcolor);
_gui->addDirtyRect(x, y, kCharWidth, kLineHeight);
_caretVisible = !erase;
}
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