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Display.h
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Display.h
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/*
* © 2021, Chris Harlow, Neil McKechnie. All rights reserved.
*
* This file is part of CommandStation-EX
*
* This 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.
*
* It 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 CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef Display_h
#define Display_h
#include <Arduino.h>
#include "defines.h"
#include "DisplayInterface.h"
// Allow maximum message length to be overridden from config.h
#if !defined(MAX_MSG_SIZE)
#define MAX_MSG_SIZE 20
#endif
// Set default scroll mode (overridable in config.h)
#if !defined(SCROLLMODE)
#define SCROLLMODE 1
#endif
// This class is created in Display_Implementation.h
class Display : public DisplayInterface {
public:
Display(DisplayDevice *deviceDriver);
static const int MAX_CHARACTER_ROWS = 8;
static const int MAX_CHARACTER_COLS = MAX_MSG_SIZE;
static const long DISPLAY_SCROLL_TIME = 3000; // 3 seconds
private:
DisplayDevice *_deviceDriver;
unsigned long lastScrollTime = 0;
uint8_t hotRow = 0;
uint8_t hotCol = 0;
uint8_t slot = 0;
uint8_t rowFirst = 0;
uint8_t rowCurrent = 0;
uint8_t charIndex = 0;
char buffer[MAX_CHARACTER_COLS + 1];
char* bufferPointer = 0;
bool noMoreRowsToDisplay = false;
uint16_t numScreenRows;
uint16_t numScreenColumns = MAX_CHARACTER_COLS;
char rowBuffer[MAX_CHARACTER_ROWS][MAX_CHARACTER_COLS+1];
public:
void begin() override;
void _clear() override;
void _setRow(uint8_t line) override;
size_t _write(uint8_t b) override;
void _refresh() override;
void _displayLoop() override;
Display *loop2(bool force);
bool findNonBlankRow();
bool isCurrentRowBlank();
void moveToNextRow();
uint8_t countNonBlankRows();
};
#endif