@startuml
skinparam packageStyle rectangle

' ============================
' MODEL (bleu)
' ============================
package mimage {
    class Pixel #aliceblue
    class RGBImage #aliceblue
}

RGBImage *-- Pixel

package mhuffman {
    class FrequencyTable #aliceblue
    class HuffmanNode #aliceblue
    class HuffmanTree #aliceblue
    class CanonicalCode #aliceblue
}

HuffmanTree *-- HuffmanNode
FrequencyTable ..> RGBImage
CanonicalCode ..> HuffmanTree

package util {
    class BitInputStream #aliceblue
    class BitOutputStream #aliceblue
    class ByteUtils #aliceblue
    class FileUtils #aliceblue
}

package mpif {
    class PIFWriter #aliceblue
}

PIFWriter ..> RGBImage
PIFWriter ..> CanonicalCode
PIFWriter ..> BitOutputStream


' ============================
' VIEW (vert)
' ============================
package vconverter {
    class ConverterWindow #palegreen
    class PreviewPanel #palegreen
    class FrequencyTablePanel #palegreen
    class CodeTablePanel #palegreen
}

ConverterWindow *-- PreviewPanel
ConverterWindow *-- FrequencyTablePanel
ConverterWindow *-- CodeTablePanel


' ============================
' CONTROLLER (orange)
' ============================
class ConverterController #ffddaa

ConverterController ..> RGBImage
ConverterController ..> FrequencyTable
ConverterController ..> HuffmanTree
ConverterController ..> CanonicalCode
ConverterController ..> PIFWriter

@enduml