mirror of
https://github.com/QuantumLeaps/qpcpp.git
synced 2025-01-28 06:02:56 +08:00
106 lines
4.1 KiB
C++
106 lines
4.1 KiB
C++
//////////////////////////////////////////////////////////////////////////////
|
|
// Product: UI with State-Local Storage Example
|
|
// Last Updated for Version: 4.5.00
|
|
// Date of the Last Update: May 20, 2012
|
|
//
|
|
// Q u a n t u m L e a P s
|
|
// ---------------------------
|
|
// innovating embedded systems
|
|
//
|
|
// Copyright (C) 2002-2012 Quantum Leaps, LLC. All rights reserved.
|
|
//
|
|
// This program is open source 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.
|
|
//
|
|
// Alternatively, this program may be distributed and modified under the
|
|
// terms of Quantum Leaps commercial licenses, which expressly supersede
|
|
// the GNU General Public License and are specifically designed for
|
|
// licensees interested in retaining the proprietary status of their code.
|
|
//
|
|
// 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/>.
|
|
//
|
|
// Contact information:
|
|
// Quantum Leaps Web sites: http://www.quantum-leaps.com
|
|
// http://www.state-machine.com
|
|
// e-mail: info@quantum-leaps.com
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
#include "qp_port.h" // the port of the QP framework
|
|
#include "num_ent.h"
|
|
#include "ui.h"
|
|
#include "video.h"
|
|
|
|
#define HELP_X 3
|
|
#define HELP_Y 14
|
|
#define HELP_DX 28
|
|
#define HELP_DY 5
|
|
|
|
//............................................................................
|
|
static void printHelp(char const * const *txt) {
|
|
uint8_t y;
|
|
for (y = 0; y < HELP_DY; ++y) {
|
|
Video::printStrAt(HELP_X, HELP_Y + y, Video::FGND_YELLOW, txt[y]);
|
|
}
|
|
}
|
|
|
|
//............................................................................
|
|
QState UI_help::handler(UI_help *me, QEvt const *e) {
|
|
switch (e->sig) {
|
|
case Q_ENTRY_SIG: {
|
|
// instantiate the state-local objects
|
|
Video::printStrAt(2, 10, Video::FGND_BLACK,
|
|
"Screen 0: Help ");
|
|
Video::clearRect( 0, 11, 35, 23, Video::BGND_BLUE);
|
|
Video::clearRect(35, 11, 80, 23, Video::BGND_BLACK);
|
|
|
|
Video::printStrAt(36, 12, Video::FGND_LIGHT_GRAY,
|
|
"Press DOWN-Arrow to scroll down");
|
|
Video::printStrAt(36, 13, Video::FGND_LIGHT_GRAY,
|
|
"Press UP-Arrow to scroll up");
|
|
|
|
Video::printStrAt(36, 20, Video::FGND_WHITE,
|
|
"Press F1 to return to last screen");
|
|
|
|
Video::clearRect(HELP_X - 1, HELP_Y,
|
|
HELP_X + HELP_DX + 1, HELP_Y + HELP_DY, Video::BGND_BLACK);
|
|
Video::drawRect (HELP_X - 2, HELP_Y - 1,
|
|
HELP_X + HELP_DX + 2, HELP_Y + HELP_DY + 1,
|
|
Video::FGND_WHITE,2);
|
|
|
|
me->m_help_line = 0;
|
|
printHelp(me->m_help_text + me->m_help_line);
|
|
|
|
return Q_HANDLED();
|
|
}
|
|
case Q_EXIT_SIG: {
|
|
// destroy the state-local objects...
|
|
return Q_HANDLED();
|
|
}
|
|
case DOWN_SIG: {
|
|
if (me->m_help_line + HELP_DY < me->m_help_len) {
|
|
++me->m_help_line;
|
|
printHelp(me->m_help_text + me->m_help_line);
|
|
}
|
|
return Q_HANDLED();
|
|
}
|
|
case UP_SIG: {
|
|
if (me->m_help_line > 0) {
|
|
--me->m_help_line;
|
|
printHelp(me->m_help_text + me->m_help_line);
|
|
}
|
|
return Q_HANDLED();
|
|
}
|
|
case HELP_SIG: {
|
|
return Q_TRAN(me->m_history); // go back to the last screen
|
|
}
|
|
}
|
|
return Q_SUPER(&UI_top::handler);
|
|
}
|