package cn.com.ut.semp.pic;

import cn.hutool.core.util.HexUtil;

import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

/**
 * 墨水屏點(diǎn)陣計(jì)算工具
 * 支持文字轉(zhuǎn)點(diǎn)陣、圖形繪制及點(diǎn)陣數(shù)據(jù)處理
 */
public class EInkDotMatrix {
    // 點(diǎn)陣寬度（墨水屏橫向像素?cái)?shù)）
    private final int width;
    // 點(diǎn)陣高度（墨水屏縱向像素?cái)?shù)）
    private final int height;
    // 點(diǎn)陣數(shù)據(jù)（true表示黑色，false表示白色）
    private boolean[][] matrix;

    /**
     * 初始化指定尺寸的點(diǎn)陣
     * @param width 寬度（像素）
     * @param height 高度（像素）
     */
    public EInkDotMatrix(int width, int height) {
        this.width = width;
        this.height = height;
        this.matrix = new boolean[height][width];
    }

    /**
     * 將文字轉(zhuǎn)換為點(diǎn)陣
     * @param text 要轉(zhuǎn)換的文字
     * @param font 字體
     * @param x 起始X坐標(biāo)
     * @param y 起始Y坐標(biāo)（基線位置）
     * @param align 對(duì)齊方式（0-左對(duì)齊，1-居中，2-右對(duì)齊）
     */
    public void drawText(String text, Font font, int x, int y, int align) {
        // 創(chuàng)建緩沖圖像用于繪制文字
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_BINARY);
        Graphics2D g2d = image.createGraphics();
        
        // 設(shè)置背景為白色
        g2d.setColor(Color.WHITE);
        g2d.fillRect(0, 0, width, height);
        
        // 設(shè)置文字顏色為黑色
        g2d.setColor(Color.BLACK);
        g2d.setFont(font);
        
        // 計(jì)算文字寬度用于對(duì)齊
        FontRenderContext frc = g2d.getFontRenderContext();
        Rectangle2D bounds = font.getStringBounds(text, frc);
        int textWidth = (int) bounds.getWidth();
        int textHeight = (int) bounds.getHeight();
        
        // 根據(jù)對(duì)齊方式調(diào)整X坐標(biāo)
        int drawX = x;
        switch (align) {
            case 1: // 居中對(duì)齊
                drawX -= textWidth / 2;
                break;
            case 2: // 右對(duì)齊
                drawX -= textWidth;
                break;
            default: // 左對(duì)齊
                break;
        }
        
        // 繪制文字（y是基線位置，需要調(diào)整以垂直居中）
        int drawY = y + (textHeight / 2) - 3; // 減去字體 descent
        g2d.drawString(text, drawX, drawY);
        
        // 提取像素?cái)?shù)據(jù)到點(diǎn)陣
        for (int row = 0; row < height; row++) {
            for (int col = 0; col < width; col++) {
                // 二進(jìn)制圖像中，0表示黑色，1表示白色
                int pixel = image.getRGB(col, row) & 0xFF;
                matrix[row][col] = (pixel == 0);
            }
        }
        
        g2d.dispose();
    }

    /**
     * 繪制直線（Bresenham算法）
     * @param x1 起點(diǎn)X
     * @param y1 起點(diǎn)Y
     * @param x2 終點(diǎn)X
     * @param y2 終點(diǎn)Y
     */
    public void drawLine(int x1, int y1, int x2, int y2) {
        int dx = Math.abs(x2 - x1);
        int dy = Math.abs(y2 - y1);
        int sx = x1 < x2 ? 1 : -1;
        int sy = y1 < y2 ? 1 : -1;
        int err = dx - dy;

        while (true) {
            setPoint(x1, y1, true);
            if (x1 == x2 && y1 == y2) break;
            int e2 = 2 * err;
            if (e2 > -dy) {
                err -= dy;
                x1 += sx;
            }
            if (e2 < dx) {
                err += dx;
                y1 += sy;
            }
        }
    }

    /**
     * 繪制矩形
     * @param x 左上角X
     * @param y 左上角Y
     * @param w 寬度
     * @param h 高度
     */
    public void drawRectangle(int x, int y, int w, int h) {
        drawLine(x, y, x + w, y);          // 上邊緣
        drawLine(x + w, y, x + w, y + h);  // 右邊緣
        drawLine(x + w, y + h, x, y + h);  // 下邊緣
        drawLine(x, y + h, x, y);          // 左邊緣
    }

    /**
     * 設(shè)置單個(gè)點(diǎn)的狀態(tài)
     * @param x X坐標(biāo)
     * @param y Y坐標(biāo)
     * @param isBlack 是否為黑色
     */
    public void setPoint(int x, int y, boolean isBlack) {
        if (x >= 0 && x < width && y >= 0 && y < height) {
            matrix[y][x] = isBlack;
        }
    }

    /**
     * 清除所有點(diǎn)（全部設(shè)為白色）
     */
    public void clear() {
        for (int i = 0; i < height; i++) {
            for (int j = 0; j < width; j++) {
                matrix[i][j] = false;
            }
        }
    }

    /**
     * 將點(diǎn)陣數(shù)據(jù)轉(zhuǎn)換為字節(jié)數(shù)組（適合硬件傳輸）
     * 每字節(jié)表示8個(gè)點(diǎn)，高位在前
     * @return 字節(jié)數(shù)組
     */
    public byte[] toByteArray() {
        int byteCount = (width * height + 7) / 8; // 向上取整
        byte[] result = new byte[byteCount];
        
        int index = 0;
        byte currentByte = 0;
        int bitPos = 7; // 從高位開始
        
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                if (matrix[y][x]) {
                    currentByte |= (1 << bitPos);
                }
                bitPos--;
                
                // 填滿一個(gè)字節(jié)
                if (bitPos < 0) {
                    result[index++] = currentByte;
                    currentByte = 0;
                    bitPos = 7;
                }
            }
        }
        
        // 處理最后一個(gè)不完整的字節(jié)
        if (bitPos < 7) {
            result[index] = currentByte;
        }
        
        return result;
    }

    /**
     * 在控制臺(tái)打印點(diǎn)陣（調(diào)試用）
     */
    public void printMatrix() {
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++) {
                System.out.print(matrix[y][x] ? "■ " : "□ ");
            }
            System.out.println();
        }
    }

    // Getters
    public int getWidth() {
        return width;
    }

    public int getHeight() {
        return height;
    }

    public boolean[][] getMatrix() {
        return matrix;
    }
    
}

package cn.com.ut.semp.pic;

import cn.hutool.core.util.HexUtil;

import java.io.IOException;

public class EInkExample {
    public static void main(String[] args) throws IOException {
        String str = "優(yōu)秀";
        String[] data = str.split("\n");
        for (int a = 0; a < data.length; a++) {
            // 單行文本轉(zhuǎn)換
            byte[][] dotMatrix = EInkDisplaySDK.textToDotMatrix(
                    data[a],
                    16,
                    EInkDisplaySDK.FontStyle.PLAIN,
                    128,
                    16
            );


            for (int i = 0; i < dotMatrix.length; i++) {
                for (int j = 0; j < dotMatrix[i].length; j++) {
                    System.out.print("0x" + HexUtil.toHex(dotMatrix[i][j] & 0xFF) + ",");
                }
                System.out.println();
            }
        }
    }
}

package cn.com.ut.semp.hello;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;

/**
 * 模擬PCtoLCD2002列行式取模功能
 */
public class PCToLCD2002Emulator {

    // 取模方向常量
    public static final int MODE_COLUMN_MAJOR = 0; // 列行式
    public static final int MODE_ROW_MAJOR = 1;    // 行列式

    // 字體設(shè)置
    private Font font;
    private boolean antiAliasing = false;
    private int mode = MODE_COLUMN_MAJOR;
    private boolean reverseByte = false; // 字節(jié)內(nèi)位順序是否反轉(zhuǎn)
    private boolean reverseOrder = false; // 整體數(shù)據(jù)順序是否反轉(zhuǎn)

    public PCToLCD2002Emulator() {
        this("宋體", 16, Font.PLAIN);
    }

    public PCToLCD2002Emulator(String fontName, int fontSize, int fontStyle) {
        this.font = new Font(fontName, fontStyle, fontSize);
    }

    /**
     * 設(shè)置取模方向
     *
     * @param mode MODE_COLUMN_MAJOR 或 MODE_ROW_MAJOR
     */
    public void setMode(int mode) {
        this.mode = mode;
    }

    /**
     * 設(shè)置是否反轉(zhuǎn)字節(jié)內(nèi)位順序
     */
    public void setReverseByte(boolean reverseByte) {
        this.reverseByte = reverseByte;
    }

    /**
     * 設(shè)置是否反轉(zhuǎn)整體數(shù)據(jù)順序
     */
    public void setReverseOrder(boolean reverseOrder) {
        this.reverseOrder = reverseOrder;
    }

    /**
     * 設(shè)置是否啟用抗鋸齒
     */
    public void setAntiAliasing(boolean antiAliasing) {
        this.antiAliasing = antiAliasing;
    }

    /**
     * 生成字模數(shù)據(jù)
     *
     * @param text 要取模的文本
     * @return 字模數(shù)據(jù)字節(jié)數(shù)組
     */
    public byte[] generateFontData(String text) {
        Dimension size = calculateTextSize(text);
        BufferedImage image = createTextImage(text, 16, 16);
        try {
            ImageIO.write(image, "png", new File("d:/hello/text.png"));
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

        return mode == MODE_COLUMN_MAJOR ?
                extractColumnMajorData(image, 16, 16) :
                extractRowMajorData(image, size.width, size.height);
    }

    /**
     * 生成字模數(shù)據(jù)并格式化為C語言數(shù)組格式
     */
    public String generateFontDataAsCArray(String text, String arrayName) {
        byte[] data = generateFontData(text);
        Dimension size = calculateTextSize(text);

        StringBuilder sb = new StringBuilder();
        sb.append("http:// ").append(text).append(" 字模數(shù)據(jù)\n");
        sb.append("http:// 寬度: ").append(size.width).append(" 像素, 高度: ").append(size.height).append(" 像素\n");
        sb.append("const unsigned char ").append(arrayName).append("[] = {");

        for (int i = 0; i < data.length; i++) {
            if (i % 16 == 0) {
                sb.append("\n    ");
            }
            sb.append(String.format("0x%02X", data[i] & 0xFF));
            if (i < data.length - 1) {
                sb.append(", ");
            }
        }

        sb.append("\n};\n");
        return sb.toString();
    }

    /**
     * 計(jì)算文本尺寸
     */
    private Dimension calculateTextSize(String text) {
        BufferedImage dummyImage = new BufferedImage(1, 1, BufferedImage.TYPE_BYTE_BINARY);
        Graphics2D g2d = dummyImage.createGraphics();
        setupRenderingHints(g2d);

        FontMetrics metrics = g2d.getFontMetrics(font);
        int width = metrics.stringWidth(text);
        int height = metrics.getHeight();

        g2d.dispose();

        return new Dimension(width, height);
    }

    /**
     * 創(chuàng)建文本圖像
     */
    private BufferedImage createTextImage(String text, int width, int height) {
        BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_BYTE_BINARY);
        Graphics2D g2d = image.createGraphics();
        setupRenderingHints(g2d);

        // 白色背景
        g2d.setColor(Color.WHITE);
        g2d.fillRect(0, 0, width, height);

        // 黑色文本
        g2d.setColor(Color.BLACK);
        g2d.setFont(font);

        FontMetrics metrics = g2d.getFontMetrics();
        int y = metrics.getAscent();
        g2d.drawString(text, 0, y);

        g2d.dispose();

        return image;
    }

    /**
     * 設(shè)置渲染參數(shù)
     */
    private void setupRenderingHints(Graphics2D g2d) {
        if (antiAliasing) {
            g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        } else {
            g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
        }
    }

    /**
     * 提取列主序點(diǎn)陣數(shù)據(jù)(PCtoLCD2002列行式)
     */
    private byte[] extractColumnMajorData(BufferedImage image, int width, int height) {
        // 計(jì)算需要的字節(jié)數(shù) (width * ceil(height/8))
        int bytesPerColumn = (int) Math.ceil(height / 8.0);
        int totalBytes = width * bytesPerColumn;

        ByteBuffer buffer = ByteBuffer.allocate(totalBytes);

        // 是否反轉(zhuǎn)列順序
        int columnStart = reverseOrder ? width - 1 : 0;
        int columnStep = reverseOrder ? -1 : 1;

        for (int x = columnStart; reverseOrder ? x >= 0 : x < width; x += columnStep) {
            for (int byteIdx = 0; byteIdx < bytesPerColumn; byteIdx++) {
                byte columnByte = 0;
                for (int bit = 0; bit < 8; bit++) {
                    int pixelY = byteIdx * 8 + bit;
                    if (pixelY < height) {
                        int rgb = image.getRGB(x, pixelY);
                        // 黑色像素設(shè)置對(duì)應(yīng)位
                        if (rgb == Color.BLACK.getRGB()) {
                            int actualBit = reverseByte ? (7 - bit) : bit;
                            columnByte |= (1 << actualBit);
                        }
                    }
                }
                buffer.put(columnByte);
            }
        }

        return buffer.array();
    }

    /**
     * 提取行主序點(diǎn)陣數(shù)據(jù)(PCtoLCD2002行列式)
     */
    private byte[] extractRowMajorData(BufferedImage image, int width, int height) {
        // 計(jì)算每行需要的字節(jié)數(shù) (ceil(width/8))
        int bytesPerRow = (int) Math.ceil(width / 8.0);
        int totalBytes = bytesPerRow * height;

        ByteBuffer buffer = ByteBuffer.allocate(totalBytes);

        // 是否反轉(zhuǎn)行順序
        int rowStart = reverseOrder ? height - 1 : 0;
        int rowStep = reverseOrder ? -1 : 1;

        for (int y = rowStart; reverseOrder ? y >= 0 : y < height; y += rowStep) {
            for (int byteIdx = 0; byteIdx < bytesPerRow; byteIdx++) {
                byte rowByte = 0;
                for (int bit = 0; bit < 8; bit++) {
                    int pixelX = byteIdx * 8 + bit;
                    if (pixelX < width) {
                        int rgb = image.getRGB(pixelX, y);
                        // 黑色像素設(shè)置對(duì)應(yīng)位
                        if (rgb == Color.BLACK.getRGB()) {
                            int actualBit = reverseByte ? (7 - bit) : bit;
                            rowByte |= (1 << actualBit);
                        }
                    }
                }
                buffer.put(rowByte);
            }
        }

        return buffer.array();
    }

    /**
     * 生成字模數(shù)據(jù)并格式化為十六進(jìn)制字符串
     */
    public String generateHexString(String text) {
        byte[] data = generateFontData(text);
        StringBuilder sb = new StringBuilder();

        for (byte b : data) {
            sb.append(String.format("%02X ", b & 0xFF));
        }

        return sb.toString().trim();
    }

    /**
     * 生成字模數(shù)據(jù)并格式化為二進(jìn)制字符串
     */
    public String generateBinaryString(String text) {
        byte[] data = generateFontData(text);
        StringBuilder sb = new StringBuilder();

        for (byte b : data) {
            String binary = String.format("%8s", Integer.toBinaryString(b & 0xFF)).replace(' ', '0');
            if (reverseByte) {
                binary = new StringBuilder(binary).reverse().toString();
            }
            sb.append(binary).append(" ");
        }

        return sb.toString().trim();
    }
}

package cn.com.ut.semp.hello;

import cn.hutool.core.util.HexUtil;

import java.awt.*;
import java.util.Arrays;

public class PCToLCD2002Example {
    public static void main(String[] args) {
        // 創(chuàng)建取模器實(shí)例(模擬PCtoLCD2002)
        PCToLCD2002Emulator emulator = new PCToLCD2002Emulator("宋體", 16, Font.PLAIN);

        // 配置取模參數(shù)(與PCtoLCD2002設(shè)置一致)
        emulator.setMode(PCToLCD2002Emulator.MODE_COLUMN_MAJOR); // 列行式
        emulator.setReverseByte(false);  // 字節(jié)內(nèi)位反轉(zhuǎn)
        emulator.setReverseOrder(false); // 不反轉(zhuǎn)整體順序
        emulator.setAntiAliasing(false); // 禁用抗鋸齒

        // 取模示例
        String text = "優(yōu)";
//
//        // 生成字模數(shù)據(jù)
        byte[] fontData = emulator.generateFontData(text);
        System.out.println(Arrays.toString(fontData));
        for (int i = 0; i < fontData.length; i++) {
            System.out.print("0x" + HexUtil.toHex(fontData[i] & 0xFF) + ",");
            if ((i + 1) % 16 == 0) {
                System.out.println();
            }
        }
        System.out.println("字模數(shù)據(jù)字節(jié)數(shù): " + fontData.length);
        

    }
}