mirror of
https://github.com/DCC-EX/CommandStation-EX.git
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85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/*
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* © 2021, Chris Harlow, Neil McKechnie. All rights reserved.
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*
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* This file is part of CommandStation-EX
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*
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* This is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* It is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef LCDDisplay_h
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#define LCDDisplay_h
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#include <Arduino.h>
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#include "DisplayInterface.h"
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#if __has_include ( "config.h")
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#include "config.h"
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#endif
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// Allow maximum message length to be overridden from config.h
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#if !defined(MAX_MSG_SIZE)
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#define MAX_MSG_SIZE 20
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#endif
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// Set default scroll mode (overridable in config.h)
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#if !defined(SCROLLMODE)
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#define SCROLLMODE 1
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#endif
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// This class is created in LCDisplay_Implementation.h
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class LCDDisplay : public DisplayInterface {
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public:
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LCDDisplay() {};
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static const int MAX_LCD_ROWS = 8;
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static const int MAX_LCD_COLS = MAX_MSG_SIZE;
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static const long LCD_SCROLL_TIME = 3000; // 3 seconds
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// Internally handled functions
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static void loop();
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LCDDisplay* loop2(bool force) override;
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void setRow(byte line) override;
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void clear() override;
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size_t write(uint8_t b) override;
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protected:
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uint8_t lcdRows;
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uint8_t lcdCols;
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private:
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void moveToNextRow();
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void skipBlankRows();
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// Relay functions to the live driver in the subclass
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virtual void clearNative() = 0;
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virtual void setRowNative(byte line) = 0;
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virtual size_t writeNative(uint8_t b) = 0;
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virtual bool isBusy() = 0;
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unsigned long lastScrollTime = 0;
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int8_t hotRow = 0;
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int8_t hotCol = 0;
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int8_t topRow = 0;
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int8_t slot = 0;
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int8_t rowFirst = -1;
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int8_t rowNext = 0;
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int8_t charIndex = 0;
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char buffer[MAX_LCD_COLS + 1];
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char* bufferPointer = 0;
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bool done = false;
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char rowBuffer[MAX_LCD_ROWS][MAX_LCD_COLS + 1];
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};
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#endif
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