Mercurial > cgi-bin > hgweb.cgi > ImagePrep

comparison src/name/blackcap/imageprep/RotateDialog.kt @ 11:1f824742e1fa

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Improve scaling quality.
author David Barts <n5jrn@me.com>
date Sat, 18 Jul 2020 08:12:00 -0700
parents b5fcabce391f
children 26a507e095ab
comparison
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10:70b4d11ebbb9 11:1f824742e1fa
4 package name.blackcap.imageprep 4 package name.blackcap.imageprep
5 5
6 import java.awt.Dimension 6 import java.awt.Dimension
7 import java.awt.Graphics 7 import java.awt.Graphics
8 import java.awt.Graphics2D 8 import java.awt.Graphics2D
9 import java.awt.RenderingHints
10 import java.awt.Toolkit 9 import java.awt.Toolkit
11 import java.awt.event.ActionListener 10 import java.awt.event.ActionListener
12 import java.awt.image.BufferedImage 11 import java.awt.image.BufferedImage
13 import java.io.File 12 import java.io.File
14 import java.io.IOException 13 import java.io.IOException
128 if (ratio >= 1.0) { 127 if (ratio >= 1.0) {
129 Pair(null, null) 128 Pair(null, null)
130 } else { 129 } else {
131 val nWidth = (imageIn.width * ratio).toInt() 130 val nWidth = (imageIn.width * ratio).toInt()
132 val nHeight = (imageIn.height * ratio).toInt() 131 val nHeight = (imageIn.height * ratio).toInt()
133 val imageOut = BufferedImage(nWidth, nHeight, BufferedImage.TYPE_INT_RGB) 132 val imageOut = BufferedImage(nWidth, nHeight, imageIn.type)
134 val graphics = imageOut.createGraphics().apply { 133 imageOut.createGraphics().run {
135 setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC) 134 drawImage(imageIn.getScaledInstance(nWidth, nHeight, BufferedImage.SCALE_SMOOTH), 0, 0, null)
136 setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY) 135 dispose()
137 setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
138 } 136 }
139 graphics.drawImage(imageIn, 0, 0, nWidth, nHeight, null)
140 Pair(imageOut, null) 137 Pair(imageOut, null)
141 } 138 }
142 } catch (e: IOException) { 139 } catch (e: IOException) {
143 Pair(null, e) 140 Pair(null, e)
144 } 141 }