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tateisu 2019-10-07 05:58:57 +09:00
parent 817bc39967
commit 5ebce521e2
1 changed files with 23 additions and 9 deletions
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32
app/src/main/java/jp/juggler/util/BitmapUtils.kt
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@ -58,8 +58,11 @@ private fun Matrix.resolveOrientation(orientation : Int?) : Matrix {
}
enum class ResizeType {
// リサイズなし
None,
// 長辺がsize以下になるようリサイズ
LongSide,
// 平方ピクセルが size*size 以下になるようリサイズ
SquarePixel,
}
@ -86,15 +89,23 @@ fun createResizedBitmap(
fun createResizedBitmap(
context : Context,
// contentResolver.openInputStream に渡すUri
uri : Uri,
// リサイズ指定
resizeConfig : ResizeConfig,
// 真の場合、リサイズも回転も必要ないならnullを返す
skipIfNoNeedToResizeAndRotate : Boolean = false
) : Bitmap? {
try {
val orientation : Int? = context.contentResolver
.openInputStream(uri)?.use { it.imageOrientation }
val orientation : Int? = context.contentResolver.openInputStream(uri)?.use {
it.imageOrientation
}
// 画像のサイズを調べる
val options = BitmapFactory.Options()
@ -102,9 +113,10 @@ fun createResizedBitmap(
options.inScaled = false
options.outWidth = 0
options.outHeight = 0
context.contentResolver.openInputStream(uri)?.use { inStream ->
BitmapFactory.decodeStream(inStream, null, options)
context.contentResolver.openInputStream(uri)?.use {
BitmapFactory.decodeStream(it, null, options)
}
var src_width = options.outWidth
var src_height = options.outHeight
if(src_width <= 0 || src_height <= 0) {
@ -119,8 +131,10 @@ fun createResizedBitmap(
/// 出力サイズの計算
val sizeSpec = resizeConfig.size.toFloat()
val dstSize : PointF = when(resizeConfig.type) {
ResizeType.None ->
srcSize
ResizeType.LongSide ->
if(max(srcSize.x, srcSize.y) <= resizeConfig.size) {
srcSize
@ -156,14 +170,14 @@ fun createResizedBitmap(
max(1, (dstSize.y + 0.5f).toInt())
)
val reSizeRequired = dstSizeInt.x != srcSize.x.toInt() || dstSizeInt.y != srcSize.y.toInt()
val resizeRequired = dstSizeInt.x != srcSize.x.toInt() || dstSizeInt.y != srcSize.y.toInt()
// リサイズも回転も必要がない場合
if(skipIfNoNeedToResizeAndRotate
&& (orientation == null || orientation == 1)
&& ! reSizeRequired
&& ! resizeRequired
) {
log.d("createOpener: no need to resize & rotate")
log.d("createResizedBitmap: no need to resize or rotate")
return null
}
@ -181,8 +195,8 @@ fun createResizedBitmap(
options.inSampleSize = 1 shl bits
val sourceBitmap : Bitmap? =
context.contentResolver.openInputStream(uri)?.use { inStream ->
BitmapFactory.decodeStream(inStream, null, options)
context.contentResolver.openInputStream(uri)?.use {
BitmapFactory.decodeStream(it, null, options)
}
if(sourceBitmap == null) {