volume.h

/*
 * Copyright (c) 2014-2023 Synthstrom Audible Limited
 *
 * 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/patch_cable_strength/fixed.h"
#include "processing/engines/audio_engine.h"
 
namespace deluge::gui::menu_item::sidechain {
 
class VolumeShortcut final : public patch_cable_strength::Fixed {
public:
    using Fixed::Fixed;
    void writeCurrentValue() override {
        Fixed::writeCurrentValue();
        AudioEngine::mustUpdateReverbParamsBeforeNextRender = true;
    }
 
    bool showColumnLabel() const override { return false; }
 
    void renderInHorizontalMenu(int32_t startX, int32_t width, int32_t startY, int32_t height) override {
        oled_canvas::Canvas& image = OLED::main;
 
        constexpr int32_t barWidth = 26;
        constexpr int32_t dotsInterval = 4;
        constexpr int32_t xOffset = 4;
 
        const int32_t leftPadding = (width - barWidth) / 2;
        const int32_t minX = startX + leftPadding;
        const int32_t maxX = minX + barWidth;
        const int32_t minY = startY + 3;
        const int32_t maxY = startY + height - 4;
 
        // Draw the dots at left and right sides
        for (int32_t y = minY; y <= maxY; y += dotsInterval) {
            if (y == minY + dotsInterval * 3) {
                // small offset for better balance
                y++;
            }
            image.drawPixel(minX + xOffset, y);
            image.drawPixel(maxX - xOffset, y);
        }
 
        // Calculate shape height based on value
        const float normalizedValue = std::abs(getValue()) / 5000.0f;
        const int32_t barHeight = maxY - minY;
        const int32_t fillHeight = static_cast<int32_t>(normalizedValue * barHeight);
 
        const int32_t yOffset = (barHeight - fillHeight) / 2;
        int32_t yStart, yEnd, y0, y1;
        if (getValue() >= 0) {
            // For positive values, draw from top down
            yStart = minY + yOffset;
            yEnd = yStart + fillHeight;
            y0 = yEnd;
            y1 = yStart;
        }
        else {
            // For negative values, draw from bottom up
            yEnd = maxY - yOffset;
            yStart = yEnd - fillHeight;
            y0 = yStart;
            y1 = yEnd;
        }
 
        // Draw a sidechain level shape
        image.drawLine(minX + xOffset, y0, maxX - xOffset, y1, true);
        image.drawVerticalLine(minX + xOffset, yStart, yEnd);
        image.drawVerticalLine(minX + xOffset + 1, yStart, yEnd);
        image.drawHorizontalLine(y1 - 1, maxX - xOffset, maxX - 1);
        image.drawHorizontalLine(y1, maxX - xOffset, maxX - 1);
        image.drawHorizontalLine(y1 - 1, minX + 1, minX + xOffset + 1);
        image.drawHorizontalLine(y1, minX + 1, minX + xOffset + 1);
    }
};
 
} // namespace deluge::gui::menu_item::sidechain