pull/1785/head
kunfei 2 years ago
parent 1312bb038c
commit 374de8f7a5
  1. 27
      app/src/main/java/io/legado/app/utils/BitmapUtils.kt

@ -3,9 +3,11 @@
package io.legado.app.utils package io.legado.app.utils
import android.content.Context import android.content.Context
import android.graphics.* import android.graphics.Bitmap
import android.graphics.Bitmap.Config import android.graphics.Bitmap.Config
import android.view.View import android.graphics.BitmapFactory
import android.graphics.Color
import android.graphics.Matrix
import com.google.android.renderscript.Toolkit import com.google.android.renderscript.Toolkit
import java.io.IOException import java.io.IOException
import kotlin.math.* import kotlin.math.*
@ -83,9 +85,7 @@ object BitmapUtils {
fun decodeBitmap(context: Context, resId: Int): Bitmap? { fun decodeBitmap(context: Context, resId: Int): Bitmap? {
val opt = BitmapFactory.Options() val opt = BitmapFactory.Options()
opt.inPreferredConfig = Config.RGB_565 opt.inPreferredConfig = Config.RGB_565
//获取资源图片 return BitmapFactory.decodeResource(context.resources, resId, opt)
val `is` = context.resources.openRawResource(resId)
return BitmapFactory.decodeStream(`is`, null, opt)
} }
/** /**
@ -96,13 +96,10 @@ object BitmapUtils {
* @return * @return
*/ */
fun decodeBitmap(context: Context, resId: Int, width: Int, height: Int): Bitmap? { fun decodeBitmap(context: Context, resId: Int, width: Int, height: Int): Bitmap? {
var inputStream = context.resources.openRawResource(resId)
val op = BitmapFactory.Options() val op = BitmapFactory.Options()
// inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight; // inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight;
op.inJustDecodeBounds = true op.inJustDecodeBounds = true
BitmapFactory.decodeStream(inputStream, null, op) //获取尺寸信息 BitmapFactory.decodeResource(context.resources, resId, op) //获取尺寸信息
//获取比例大小 //获取比例大小
val wRatio = ceil((op.outWidth / width).toDouble()).toInt() val wRatio = ceil((op.outWidth / width).toDouble()).toInt()
val hRatio = ceil((op.outHeight / height).toDouble()).toInt() val hRatio = ceil((op.outHeight / height).toDouble()).toInt()
@ -114,9 +111,8 @@ object BitmapUtils {
op.inSampleSize = hRatio op.inSampleSize = hRatio
} }
} }
inputStream = context.resources.openRawResource(resId)
op.inJustDecodeBounds = false op.inJustDecodeBounds = false
return BitmapFactory.decodeStream(inputStream, null, op) return BitmapFactory.decodeResource(context.resources, resId, op)
} }
/** /**
@ -135,6 +131,7 @@ object BitmapUtils {
height: Int height: Int
): Bitmap? { ): Bitmap? {
var inputStream = context.assets.open(fileNameInAssets) var inputStream = context.assets.open(fileNameInAssets)
return inputStream.use {
val op = BitmapFactory.Options() val op = BitmapFactory.Options()
// inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight; // inJustDecodeBounds如果设置为true,仅仅返回图片实际的宽和高,宽和高是赋值给opts.outWidth,opts.outHeight;
op.inJustDecodeBounds = true op.inJustDecodeBounds = true
@ -152,14 +149,8 @@ object BitmapUtils {
} }
inputStream = context.assets.open(fileNameInAssets) inputStream = context.assets.open(fileNameInAssets)
op.inJustDecodeBounds = false op.inJustDecodeBounds = false
return BitmapFactory.decodeStream(inputStream, null, op) BitmapFactory.decodeStream(inputStream, null, op)
} }
//图片不被压缩
fun convertViewToBitmap(view: View, bitmapWidth: Int, bitmapHeight: Int): Bitmap {
val bitmap = Bitmap.createBitmap(bitmapWidth, bitmapHeight, Config.ARGB_8888)
view.draw(Canvas(bitmap))
return bitmap
} }
/** /**

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