gedoor
4 years ago
parent
5e1f106d1b
commit
d7a7f35bd7
@ -0,0 +1,13 @@ |
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package io.legado.app.ui.qrcode |
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import com.google.zxing.Result |
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import com.king.zxing.CaptureFragment |
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class QrCodeFragment : CaptureFragment() { |
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override fun onScanResultCallback(result: Result?): Boolean { |
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(activity as? QrCodeActivity)?.onScanResultCallback(result) |
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return true |
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} |
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} |
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@ -0,0 +1,467 @@ |
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package io.legado.app.utils |
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import android.graphics.* |
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import android.text.TextPaint |
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import android.text.TextUtils |
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import androidx.annotation.ColorInt |
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import androidx.annotation.FloatRange |
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import com.google.zxing.* |
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import com.google.zxing.common.GlobalHistogramBinarizer |
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import com.google.zxing.common.HybridBinarizer |
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import com.google.zxing.qrcode.QRCodeWriter |
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel |
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import com.king.zxing.DecodeFormatManager |
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import com.king.zxing.util.LogUtils |
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import java.util.* |
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import kotlin.math.max |
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@Suppress("MemberVisibilityCanBePrivate", "unused") |
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object QRCodeUtils { |
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const val DEFAULT_REQ_WIDTH = 480 |
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const val DEFAULT_REQ_HEIGHT = 640 |
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/** |
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* 生成二维码 |
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* @param content 二维码的内容 |
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* @param heightPix 二维码的高 |
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* @param logo 二维码中间的logo |
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* @param ratio logo所占比例 因为二维码的最大容错率为30%，所以建议ratio的范围小于0.3 |
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* @return |
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*/ |
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fun createQRCode( |
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content: String, |
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heightPix: Int = DEFAULT_REQ_HEIGHT, |
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logo: Bitmap? = null, |
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@FloatRange(from = 0.0, to = 1.0) ratio: Float = 0.2f, |
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errorCorrectionLevel: ErrorCorrectionLevel = ErrorCorrectionLevel.H |
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): Bitmap? { |
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//配置参数 |
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val hints: MutableMap<EncodeHintType, Any> = EnumMap(EncodeHintType::class.java) |
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hints[EncodeHintType.CHARACTER_SET] = "utf-8" |
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//容错级别 |
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hints[EncodeHintType.ERROR_CORRECTION] = errorCorrectionLevel |
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//设置空白边距的宽度 |
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hints[EncodeHintType.MARGIN] = 1 //default is 4 |
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return createQRCode(content, heightPix, logo, ratio, hints) |
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} |
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/** |
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* 生成二维码 |
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* @param content 二维码的内容 |
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* @param heightPix 二维码的高 |
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* @param logo 二维码中间的logo |
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* @param ratio logo所占比例 因为二维码的最大容错率为30%，所以建议ratio的范围小于0.3 |
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* @param hints |
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* @param codeColor 二维码的颜色 |
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* @return |
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*/ |
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fun createQRCode( |
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content: String?, |
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heightPix: Int, |
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logo: Bitmap?, |
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@FloatRange(from = 0.0, to = 1.0) ratio: Float = 0.2f, |
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hints: Map<EncodeHintType, *>, |
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codeColor: Int = Color.BLACK |
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): Bitmap? { |
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try { |
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// 图像数据转换，使用了矩阵转换 |
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val bitMatrix = |
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QRCodeWriter().encode(content, BarcodeFormat.QR_CODE, heightPix, heightPix, hints) |
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val pixels = IntArray(heightPix * heightPix) |
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// 下面这里按照二维码的算法，逐个生成二维码的图片， |
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// 两个for循环是图片横列扫描的结果 |
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for (y in 0 until heightPix) { |
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for (x in 0 until heightPix) { |
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if (bitMatrix[x, y]) { |
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pixels[y * heightPix + x] = codeColor |
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} else { |
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pixels[y * heightPix + x] = Color.WHITE |
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} |
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} |
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} |
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// 生成二维码图片的格式 |
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var bitmap = Bitmap.createBitmap(heightPix, heightPix, Bitmap.Config.ARGB_8888) |
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bitmap!!.setPixels(pixels, 0, heightPix, 0, 0, heightPix, heightPix) |
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if (logo != null) { |
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bitmap = addLogo(bitmap, logo, ratio) |
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} |
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return bitmap |
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} catch (e: WriterException) { |
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LogUtils.w(e.message) |
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} |
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return null |
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} |
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/** |
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* 在二维码中间添加Logo图案 |
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* @param src |
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* @param logo |
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* @param ratio logo所占比例 因为二维码的最大容错率为30%，所以建议ratio的范围小于0.3 |
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* @return |
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*/ |
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private fun addLogo( |
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src: Bitmap?, |
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logo: Bitmap?, |
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@FloatRange(from = 0.0, to = 1.0) ratio: Float |
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): Bitmap? { |
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if (src == null) { |
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return null |
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} |
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if (logo == null) { |
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return src |
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} |
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//获取图片的宽高 |
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val srcWidth = src.width |
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val srcHeight = src.height |
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val logoWidth = logo.width |
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val logoHeight = logo.height |
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if (srcWidth == 0 || srcHeight == 0) { |
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return null |
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} |
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if (logoWidth == 0 || logoHeight == 0) { |
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return src |
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} |
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//logo大小为二维码整体大小 |
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val scaleFactor = srcWidth * ratio / logoWidth |
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var bitmap = Bitmap.createBitmap(srcWidth, srcHeight, Bitmap.Config.ARGB_8888) |
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try { |
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val canvas = Canvas(bitmap!!) |
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canvas.drawBitmap(src, 0f, 0f, null) |
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canvas.scale( |
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scaleFactor, |
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scaleFactor, |
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(srcWidth / 2).toFloat(), |
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(srcHeight / 2).toFloat() |
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) |
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canvas.drawBitmap( |
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logo, |
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((srcWidth - logoWidth) / 2).toFloat(), |
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((srcHeight - logoHeight) / 2).toFloat(), |
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null |
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) |
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canvas.save() |
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canvas.restore() |
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} catch (e: Exception) { |
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bitmap = null |
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LogUtils.w(e.message) |
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} |
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return bitmap |
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} |
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/** |
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* 解析一维码/二维码图片 |
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* @param bitmap 解析的图片 |
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* @param hints 解析编码类型 |
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* @return |
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*/ |
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fun parseCode( |
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bitmap: Bitmap, |
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reqWidth: Int = DEFAULT_REQ_WIDTH, |
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reqHeight: Int = DEFAULT_REQ_HEIGHT, |
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hints: Map<DecodeHintType?, Any?> = DecodeFormatManager.ALL_HINTS |
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): String? { |
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val result = parseCodeResult(bitmap, reqWidth, reqHeight, hints) |
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return result?.text |
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} |
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/** |
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* 解析一维码/二维码图片 |
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* @param bitmap 解析的图片 |
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* @param hints 解析编码类型 |
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* @return |
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*/ |
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fun parseCodeResult( |
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bitmap: Bitmap, |
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reqWidth: Int = DEFAULT_REQ_WIDTH, |
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reqHeight: Int = DEFAULT_REQ_HEIGHT, |
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hints: Map<DecodeHintType?, Any?> = DecodeFormatManager.ALL_HINTS |
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): Result? { |
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if (bitmap.width > reqWidth || bitmap.height > reqHeight) { |
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val bm = BitmapUtils.changeBitmapSize(bitmap, reqWidth, reqHeight) |
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return parseCodeResult(getRGBLuminanceSource(bm), hints) |
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} |
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return parseCodeResult(getRGBLuminanceSource(bitmap), hints) |
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} |
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/** |
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* 解析一维码/二维码图片 |
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* @param source |
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* @param hints |
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* @return |
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*/ |
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fun parseCodeResult(source: LuminanceSource?, hints: Map<DecodeHintType?, Any?>?): Result? { |
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var result: Result? = null |
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val reader = MultiFormatReader() |
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try { |
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reader.setHints(hints) |
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if (source != null) { |
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result = decodeInternal(reader, source) |
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if (result == null) { |
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result = decodeInternal(reader, source.invert()) |
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} |
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if (result == null && source.isRotateSupported) { |
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result = decodeInternal(reader, source.rotateCounterClockwise()) |
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} |
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} |
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} catch (e: java.lang.Exception) { |
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LogUtils.w(e.message) |
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} finally { |
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reader.reset() |
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} |
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return result |
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} |
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/** |
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* 解析二维码图片 |
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* @param bitmapPath 需要解析的图片路径 |
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* @return |
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*/ |
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fun parseQRCode(bitmapPath: String?): String? { |
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val result = parseQRCodeResult(bitmapPath) |
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return result?.text |
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} |
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/** |
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* 解析二维码图片 |
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* @param bitmapPath 需要解析的图片路径 |
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* @param reqWidth 请求目标宽度，如果实际图片宽度大于此值，会自动进行压缩处理，当 reqWidth 和 reqHeight都小于或等于0时，则不进行压缩处理 |
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* @param reqHeight 请求目标高度，如果实际图片高度大于此值，会自动进行压缩处理，当 reqWidth 和 reqHeight都小于或等于0时，则不进行压缩处理 |
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* @return |
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*/ |
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fun parseQRCodeResult( |
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bitmapPath: String?, |
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reqWidth: Int = DEFAULT_REQ_WIDTH, |
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reqHeight: Int = DEFAULT_REQ_HEIGHT |
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): Result? { |
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return parseCodeResult(bitmapPath, reqWidth, reqHeight, DecodeFormatManager.QR_CODE_HINTS) |
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} |
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/** |
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* 解析一维码/二维码图片 |
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* @param bitmapPath 需要解析的图片路径 |
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* @return |
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*/ |
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fun parseCode( |
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bitmapPath: String?, |
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reqWidth: Int = DEFAULT_REQ_WIDTH, |
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reqHeight: Int = DEFAULT_REQ_HEIGHT, |
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hints: Map<DecodeHintType?, Any?> = DecodeFormatManager.ALL_HINTS |
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): String? { |
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return parseCodeResult(bitmapPath, reqWidth, reqHeight, hints)?.text |
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} |
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/** |
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* 解析一维码/二维码图片 |
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* @param bitmapPath 需要解析的图片路径 |
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* @param reqWidth 请求目标宽度，如果实际图片宽度大于此值，会自动进行压缩处理，当 reqWidth 和 reqHeight都小于或等于0时，则不进行压缩处理 |
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* @param reqHeight 请求目标高度，如果实际图片高度大于此值，会自动进行压缩处理，当 reqWidth 和 reqHeight都小于或等于0时，则不进行压缩处理 |
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* @param hints 解析编码类型 |
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* @return |
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*/ |
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fun parseCodeResult( |
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bitmapPath: String?, |
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reqWidth: Int = DEFAULT_REQ_WIDTH, |
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reqHeight: Int = DEFAULT_REQ_HEIGHT, |
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hints: Map<DecodeHintType?, Any?> = DecodeFormatManager.ALL_HINTS |
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): Result? { |
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var result: Result? = null |
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val reader = MultiFormatReader() |
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try { |
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reader.setHints(hints) |
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val source = getRGBLuminanceSource(compressBitmap(bitmapPath, reqWidth, reqHeight)) |
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result = decodeInternal(reader, source) |
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if (result == null) { |
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result = decodeInternal(reader, source.invert()) |
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} |
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if (result == null && source.isRotateSupported) { |
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result = decodeInternal(reader, source.rotateCounterClockwise()) |
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} |
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} catch (e: Exception) { |
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LogUtils.w(e.message) |
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} finally { |
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reader.reset() |
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} |
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return result |
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} |
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private fun decodeInternal(reader: MultiFormatReader, source: LuminanceSource): Result? { |
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var result: Result? = null |
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try { |
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try { |
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//采用HybridBinarizer解析 |
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result = reader.decodeWithState(BinaryBitmap(HybridBinarizer(source))) |
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} catch (e: Exception) { |
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} |
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if (result == null) { |
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//如果没有解析成功，再采用GlobalHistogramBinarizer解析一次 |
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result = reader.decodeWithState(BinaryBitmap(GlobalHistogramBinarizer(source))) |
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} |
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} catch (e: Exception) { |
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} |
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return result |
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} |
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/** |
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* 压缩图片 |
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* @param path |
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* @return |
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*/ |
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private fun compressBitmap(path: String?, reqWidth: Int, reqHeight: Int): Bitmap { |
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if (reqWidth > 0 && reqHeight > 0) { //都大于进行判断是否压缩 |
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val newOpts = BitmapFactory.Options() |
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// 开始读入图片，此时把options.inJustDecodeBounds 设回true了 |
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newOpts.inJustDecodeBounds = true //获取原始图片大小 |
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BitmapFactory.decodeFile(path, newOpts) // 此时返回bm为空 |
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val width = newOpts.outWidth.toFloat() |
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val height = newOpts.outHeight.toFloat() |
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// 缩放比，由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可 |
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var wSize = 1 // wSize=1表示不缩放 |
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if (width > reqWidth) { // 如果宽度大的话根据宽度固定大小缩放 |
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wSize = (width / reqWidth).toInt() |
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} |
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var hSize = 1 // wSize=1表示不缩放 |
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if (height > reqHeight) { // 如果高度高的话根据宽度固定大小缩放 |
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hSize = (height / reqHeight).toInt() |
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} |
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var size = max(wSize, hSize) |
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if (size <= 0) size = 1 |
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newOpts.inSampleSize = size // 设置缩放比例 |
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// 重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了 |
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newOpts.inJustDecodeBounds = false |
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return BitmapFactory.decodeFile(path, newOpts) |
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} |
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return BitmapFactory.decodeFile(path) |
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} |
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/** |
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* 获取RGBLuminanceSource |
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* @param bitmap |
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* @return |
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*/ |
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private fun getRGBLuminanceSource(bitmap: Bitmap): RGBLuminanceSource { |
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val width = bitmap.width |
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val height = bitmap.height |
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val pixels = IntArray(width * height) |
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bitmap.getPixels(pixels, 0, bitmap.width, 0, 0, bitmap.width, bitmap.height) |
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return RGBLuminanceSource(width, height, pixels) |
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} |
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/** |
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* 生成条形码 |
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* @param content |
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* @param format |
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* @param desiredWidth |
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* @param desiredHeight |
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* @param hints |
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* @param isShowText |
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* @param textSize |
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* @param codeColor |
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* @return |
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*/ |
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fun createBarCode( |
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content: String?, |
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desiredWidth: Int, |
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desiredHeight: Int, |
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format: BarcodeFormat = BarcodeFormat.CODE_128, |
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hints: Map<EncodeHintType?, *>? = null, |
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isShowText: Boolean = true, |
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textSize: Int = 40, |
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@ColorInt codeColor: Int = Color.BLACK |
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): Bitmap? { |
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if (TextUtils.isEmpty(content)) { |
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return null |
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} |
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val writer = MultiFormatWriter() |
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try { |
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val result = writer.encode( |
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content, format, desiredWidth, |
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desiredHeight, hints |
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) |
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val width = result.width |
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val height = result.height |
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val pixels = IntArray(width * height) |
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// All are 0, or black, by default |
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for (y in 0 until height) { |
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val offset = y * width |
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for (x in 0 until width) { |
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pixels[offset + x] = if (result[x, y]) codeColor else Color.WHITE |
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} |
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} |
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val bitmap = Bitmap.createBitmap( |
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width, height, |
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Bitmap.Config.ARGB_8888 |
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) |
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bitmap.setPixels(pixels, 0, width, 0, 0, width, height) |
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return if (isShowText) { |
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addCode(bitmap, content, textSize, codeColor, textSize / 2) |
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} else bitmap |
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} catch (e: WriterException) { |
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LogUtils.w(e.message) |
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} |
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return null |
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} |
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/** |
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* 条形码下面添加文本信息 |
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* @param src |
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* @param code |
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* @param textSize |
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* @param textColor |
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* @return |
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*/ |
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private fun addCode( |
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src: Bitmap?, |
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code: String?, |
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textSize: Int, |
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@ColorInt textColor: Int, |
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offset: Int |
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): Bitmap? { |
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if (src == null) { |
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return null |
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} |
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if (TextUtils.isEmpty(code)) { |
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return src |
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} |
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//获取图片的宽高 |
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val srcWidth = src.width |
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val srcHeight = src.height |
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if (srcWidth <= 0 || srcHeight <= 0) { |
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return null |
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} |
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var bitmap = Bitmap.createBitmap( |
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srcWidth, |
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srcHeight + textSize + offset * 2, |
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Bitmap.Config.ARGB_8888 |
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) |
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try { |
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val canvas = Canvas(bitmap!!) |
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canvas.drawBitmap(src, 0f, 0f, null) |
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val paint = TextPaint() |
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paint.textSize = textSize.toFloat() |
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paint.color = textColor |
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paint.textAlign = Paint.Align.CENTER |
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canvas.drawText( |
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code!!, |
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(srcWidth / 2).toFloat(), |
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(srcHeight + textSize / 2 + offset).toFloat(), |
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paint |
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) |
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canvas.save() |
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canvas.restore() |
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} catch (e: Exception) { |
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bitmap = null |
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LogUtils.w(e.message) |
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} |
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return bitmap |
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} |
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} |
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