follow_channel.h

/*
 * Copyright (c) 2024 Sean Ditny
 *
 * This file is part of The Synthstrom Audible Deluge Firmware.
 *
 * The Synthstrom Audible Deluge Firmware 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 <https://www.gnu.org/licenses/>.
 */
 
#pragma once
#include "gui/menu_item/integer.h"
#include "gui/ui/sound_editor.h"
#include "hid/display/oled.h"
#include "io/midi/midi_engine.h"
 
class MIDICable;
 
namespace deluge::gui::menu_item::midi {
class FollowChannel final : public Integer {
public:
    using Integer::Integer;
 
    FollowChannel(l10n::String newName, l10n::String title, MIDIFollowChannelType type)
        : Integer(newName, title), channelType(type),
          midiInput(midiEngine.midiFollowChannelType[util::to_underlying(type)]) {}
 
    void readCurrentValue() override { this->setValue(midiInput.channelOrZone); }
    void writeCurrentValue() override { midiInput.channelOrZone = this->getValue(); }
    [[nodiscard]] int32_t getMaxValue() const override { return NUM_CHANNELS; }
    bool allowsLearnMode() override { return true; }
 
    void drawInteger(int32_t textWidth, int32_t textHeight, int32_t yPixel) override {
        deluge::hid::display::oled_canvas::Canvas& canvas = hid::display::OLED::main;
 
        yPixel = 20;
 
        char const* differentiationString;
        if (MIDIDeviceManager::differentiatingInputsByDevice) {
            differentiationString = l10n::get(l10n::String::STRING_FOR_INPUT_DIFFERENTIATION_ON);
        }
        else {
            differentiationString = l10n::get(l10n::String::STRING_FOR_INPUT_DIFFERENTIATION_OFF);
        }
        canvas.drawString(differentiationString, 0, yPixel, kTextSpacingX, kTextSizeYUpdated);
 
        yPixel += kTextSpacingY;
 
        char const* deviceString = l10n::get(l10n::String::STRING_FOR_FOLLOW_DEVICE_UNASSIGNED);
        if (midiInput.cable) {
            deviceString = midiInput.cable->getDisplayName();
        }
        canvas.drawString(deviceString, 0, yPixel, kTextSpacingX, kTextSizeYUpdated);
        deluge::hid::display::OLED::setupSideScroller(0, deviceString, kTextSpacingX, OLED_MAIN_WIDTH_PIXELS, yPixel,
                                                      yPixel + 8, kTextSpacingX, kTextSpacingY, false);
 
        yPixel += kTextSpacingY;
 
        char const* channelText;
        if (this->getValue() == MIDI_CHANNEL_MPE_LOWER_ZONE) {
            channelText = l10n::get(l10n::String::STRING_FOR_MPE_LOWER_ZONE);
        }
        else if (this->getValue() == MIDI_CHANNEL_MPE_UPPER_ZONE) {
            channelText = l10n::get(l10n::String::STRING_FOR_MPE_UPPER_ZONE);
        }
        else if (this->getValue() == MIDI_CHANNEL_NONE) {
            channelText = l10n::get(l10n::String::STRING_FOR_FOLLOW_CHANNEL_UNASSIGNED);
        }
        else {
            channelText = l10n::get(l10n::String::STRING_FOR_CHANNEL);
            char buffer[12];
            int32_t channelmod = (midiInput.channelOrZone >= IS_A_CC) * IS_A_CC;
            intToString(midiInput.channelOrZone + 1 - channelmod, buffer, 1);
            canvas.drawString(buffer, kTextSpacingX * 8, yPixel, kTextSpacingX, kTextSizeYUpdated);
        }
        canvas.drawString(channelText, 0, yPixel, kTextSpacingX, kTextSizeYUpdated);
    }
 
    void drawValue() override {
        if (this->getValue() == MIDI_CHANNEL_MPE_LOWER_ZONE) {
            display->setText(l10n::get(l10n::String::STRING_FOR_MPE_LOWER_ZONE));
        }
        else if (this->getValue() == MIDI_CHANNEL_MPE_UPPER_ZONE) {
            display->setText(l10n::get(l10n::String::STRING_FOR_MPE_UPPER_ZONE));
        }
        else if (this->getValue() == MIDI_CHANNEL_NONE) {
            display->setText(l10n::get(l10n::String::STRING_FOR_NONE));
        }
        else {
            display->setTextAsNumber(this->getValue() + 1);
        }
    }
 
    void selectEncoderAction(int32_t offset) override {
        if (this->getValue() == MIDI_CHANNEL_NONE) {
            if (offset > 0) {
                this->setValue(0);
            }
            else if (offset < 0) {
                this->setValue(MIDI_CHANNEL_MPE_UPPER_ZONE);
            }
        }
        else {
            this->setValue(this->getValue() + offset);
            if ((this->getValue() >= NUM_CHANNELS) || (this->getValue() < 0)) {
                this->setValue(MIDI_CHANNEL_NONE);
                midiInput.clear();
                renderDisplay();
                return;
            }
        }
        Number::selectEncoderAction(offset);
    }
 
    void unlearnAction() {
        this->setValue(MIDI_CHANNEL_NONE);
        midiInput.clear();
        if (soundEditor.getCurrentMenuItem() == this) {
            renderDisplay();
        }
        else {
            display->displayPopup(l10n::get(l10n::String::STRING_FOR_UNLEARNED));
        }
    }
 
    bool learnNoteOn(MIDICable& cable, int32_t channel, int32_t noteCode) {
        this->setValue(channel);
        midiInput.cable = &cable;
        midiInput.channelOrZone = channel;
 
        if (soundEditor.getCurrentMenuItem() == this) {
            renderDisplay();
        }
        else {
            display->displayPopup(l10n::get(l10n::String::STRING_FOR_LEARNED));
        }
 
        return true;
    }
 
    void learnCC(MIDICable& cable, int32_t channel, int32_t ccNumber, int32_t value) {
        this->setValue(channel);
        midiInput.cable = &cable;
        midiInput.channelOrZone = channel;
 
        if (soundEditor.getCurrentMenuItem() == this) {
            renderDisplay();
        }
        else {
            display->displayPopup(l10n::get(l10n::String::STRING_FOR_LEARNED));
        }
    }
 
    void renderDisplay() {
        if (display->haveOLED()) {
            renderUIsForOled();
        }
        else {
            drawValue();
        }
    }
 
private:
    MIDIFollowChannelType channelType;
    LearnedMIDI& midiInput;
};
} // namespace deluge::gui::menu_item::midi