package cn.flightfeather.supervision.common.creditcode
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import cn.flightfeather.supervision.infrastructure.utils.QRCodeUtil
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import java.awt.Color
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import java.awt.Font
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import java.awt.image.BufferedImage
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import java.io.*
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import javax.imageio.IIOImage
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import javax.imageio.ImageIO
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import javax.imageio.ImageTypeSpecifier
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import javax.imageio.metadata.IIOInvalidTreeException
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import javax.imageio.metadata.IIOMetadata
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import javax.imageio.metadata.IIOMetadataNode
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import javax.imageio.stream.ImageOutputStream
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/**
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* 环信码生成工具
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*/
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object EnvCreditCode {
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val templatePath =
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(Thread.currentThread().contextClassLoader?.getResource("/")?.path ?: "src/main/resources") + "/templates/"
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val templateName = "qr_code_bg.png"
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fun createImage(userId: String, userName: String, company: String?, supply: String?, os: OutputStream) {
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// 确定图片宽高以及二维码的宽度
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val bgWidth = 1181
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val bgHeight = 1654
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val qrCodeWidth = 440
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// 生成二维码图片
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val baseUrl = "http://47.100.191.150/ledger/page/qrcode.html"
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val url = "$baseUrl?id=${userId}"
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val qrCode = QRCodeUtil.createQRCodeBitmap2(url, userName, qrCodeWidth, qrCodeWidth)
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// 生成画布
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val bg = ImageIO.read(FileInputStream(templatePath + templateName))
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val source = BufferedImage(bgWidth, bgHeight, BufferedImage.TYPE_INT_RGB)
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// val f1 = Font("思源黑体 CN Medium", Font.PLAIN, 40)
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val font = Font("微软雅黑", Font.PLAIN, 40)
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val graphics2D = source.graphics
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// 绘制二维码底图
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graphics2D.drawImage(bg, 0, 0) { _, _, _, _, _, _ ->
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true
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}
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// 绘制顶部居中的场景名称（x坐标根据文本长度动态计算，y坐标根据设计方案直接定位）
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graphics2D.font = font
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graphics2D.color = Color.BLACK
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val w1 = graphics2D.fontMetrics.stringWidth(userName)
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val x1 = (bgWidth - w1) / 2
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graphics2D.drawString(userName, x1, 160 + graphics2D.fontMetrics.ascent)
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// 绘制场景名称下方居中的所属企业名称（x坐标根据文本长度动态计算，y坐标根据设计方案直接定位）
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val c = company ?: ""
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graphics2D.font = font
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val w2 = graphics2D.fontMetrics.stringWidth(c)
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val x2 = (bgWidth - w2) / 2
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graphics2D.drawString(c, x2, 250 + graphics2D.fontMetrics.ascent)
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// 绘制中心的二维码图片（x坐标根据文本长度动态计算，y坐标根据设计方案直接定位）
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val x3 = (bgWidth - qrCodeWidth) / 2
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graphics2D.drawImage(qrCode, x3, 410) { img, infoflags, x, y, width, height ->
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true
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}
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// 绘制支持提供方
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val s = supply ?: ""
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graphics2D.font = Font("微软雅黑", Font.PLAIN, 30)
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val w4 = graphics2D.fontMetrics.stringWidth(s)
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val x4 = (bgWidth - w4) / 2
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graphics2D.drawString(s, x4, 753 + graphics2D.fontMetrics.ascent)
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val a = ImageIO.getImageWritersByFormatName("png")
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while (a.hasNext()) {
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val iw = a.next()
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val writeParam = iw.defaultWriteParam
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val typeSpecifier = ImageTypeSpecifier.createFromBufferedImageType(BufferedImage.TYPE_INT_RGB)
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val metadata = iw.getDefaultImageMetadata(typeSpecifier, writeParam)
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if (metadata.isReadOnly || !metadata.isStandardMetadataFormatSupported) {
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continue
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}
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setDPI(metadata)
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val stream = ImageIO.createImageOutputStream(os)
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// val stream = ImageIO.createImageOutputStream(output)
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// val stream = ImageIO.createImageOutputStream(File("C:/tools/${userName}.png"))
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stream.use {
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iw.output = it
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iw.write(metadata, IIOImage(source, null, metadata), writeParam)
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}
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break
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}
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// ImageIO.write(source, "png", File("E:/qrcode/${it.second}.png"))
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}
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@Throws(IIOInvalidTreeException::class)
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private fun setDPI(metadata: IIOMetadata) {
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// for PMG, it's dots per millimeter
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val dotsPerMilli = 1.0 * 300 / 10 / 2.54
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val horiz = IIOMetadataNode("HorizontalPixelSize")
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horiz.setAttribute("value", java.lang.Double.toString(dotsPerMilli))
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val vert = IIOMetadataNode("VerticalPixelSize")
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vert.setAttribute("value", java.lang.Double.toString(dotsPerMilli))
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val dim = IIOMetadataNode("Dimension")
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dim.appendChild(horiz)
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dim.appendChild(vert)
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val root = IIOMetadataNode("javax_imageio_1.0")
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root.appendChild(dim)
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metadata.mergeTree("javax_imageio_1.0", root)
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}
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}
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