76 lines
2.1 KiB
C++
76 lines
2.1 KiB
C++
/*
|
|
epple2
|
|
Copyright (C) 2008 by Christopher A. Mosher <cmosher01@gmail.com>
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include "keyboard.h"
|
|
#include "hypermode.h"
|
|
#include "keyboardbuffermode.h"
|
|
#include <cstdlib>
|
|
|
|
|
|
|
|
Keyboard::Keyboard(KeypressQueue& q, HyperMode& fhyper, KeyboardBufferMode& buffered) :
|
|
keys(q),
|
|
fhyper(fhyper),
|
|
buffered(buffered),
|
|
latch(0),
|
|
cGet(0) {
|
|
}
|
|
|
|
void Keyboard::powerOn() {
|
|
this->latch = 0xA1u + std::rand() % (0xFEu-0xA1+1u);
|
|
}
|
|
|
|
void Keyboard::clear() {
|
|
this->latch &= 0x7F;
|
|
}
|
|
|
|
unsigned char Keyboard::get() {
|
|
waitIfTooFast();
|
|
if (!this->buffered.isBuffered() || !(this->latch & 0x80)) {
|
|
if (!this->keys.empty()) {
|
|
this->latch = this->keys.front() | 0x80;
|
|
this->keys.pop();
|
|
}
|
|
}
|
|
return this->latch;
|
|
}
|
|
|
|
void Keyboard::waitIfTooFast() {
|
|
// TODO remove all hyper stuff; it doesn't do anything anymore,
|
|
// since the new architecture with wxTimer
|
|
|
|
// if (this->fhyper.isHyper()) {
|
|
// return;
|
|
// }
|
|
//
|
|
// ++this->cGet;
|
|
// if (!this->cGet) {
|
|
// if (SDL_GetTicks() - this->lastGet <= 1000) {
|
|
// /*
|
|
// * Check every 256 gets to see if they are
|
|
// * happening too fast (within one second).
|
|
// * If so, it means we are probably just
|
|
// * looping waiting for a keypress, so
|
|
// * wait a millisecond (or so) just to
|
|
// * prevent us from using 100% of CPU time.
|
|
// */
|
|
// SDL_Delay(1);
|
|
// }
|
|
// }
|
|
// this->lastGet = SDL_GetTicks();
|
|
}
|