feat: showImage: center and scale image by default

copret/src/images.scala

@@ -5,20 +5,28 @@ import Terminal.*
 object KittyGraphicsProtocol:
   val MaxID = 4294967295L // max 32-bit unsigned
 
-  def checkSupport =
+  def checkSupport() =
     queryTerm(s"${apc}Gi=${KittyGraphicsProtocol.MaxID},s=1,v=1,a=q,t=d,f=24;AAAA${st}${csi}c")
       .contains(s"${apc}Gi=${KittyGraphicsProtocol.MaxID}")
 
   def showImage(img: os.Path) =
     import java.util.Base64
+    (
+      for
+        _         <- Option.when(checkSupport())(true)
+        termSize  <- Terminal.getSize()
+        cursorPos <- Terminal.getCursorPos()
+      yield
         val image = Base64.getEncoder.encodeToString(os.read.bytes(img))
         if image.length > 4096 then
           val chunks = image.grouped(4096).toVector
+          val width  = termSize.cols - cursorPos.cols * 2
 
-      s"${apc}Gf=100,t=d,m=1,a=T;${chunks.head}${st}" +
+          s"${apc}Gf=100,t=d,m=1,a=T,c=${width};${chunks.head}${st}" +
             chunks.tail.init.map(c => s"${apc}Gm=1;${c}${st}").mkString +
             s"${apc}Gm=0;${chunks.last}${st}"
         else s"${apc}Gf=100,t=d,a=T;${image}${st}"
+    ).getOrElse("Could not show image")
 
   trait Param:
     def code: String