mirror of https://github.com/irmen/ksim65.git
250 lines
8.6 KiB
Kotlin
250 lines
8.6 KiB
Kotlin
package razorvine.examplemachines
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import razorvine.ksim65.*
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import java.awt.*
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import java.awt.event.*
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import java.awt.image.BufferedImage
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import java.util.*
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import javax.imageio.ImageIO
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import javax.swing.*
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import javax.swing.event.MouseInputListener
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/**
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* Define a monochrome screen that can display 640x480 pixels
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* and/or 80x30 characters (these are 8x16 pixels).
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*/
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object ScreenDefs {
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const val SCREEN_WIDTH_CHARS = 80
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const val SCREEN_HEIGHT_CHARS = 30
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const val SCREEN_WIDTH = SCREEN_WIDTH_CHARS*8
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const val SCREEN_HEIGHT = SCREEN_HEIGHT_CHARS*16
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const val PIXEL_SCALING = 1.5
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const val BORDER_SIZE = 32
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val BG_COLOR = Color(0, 10, 20)
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val FG_COLOR = Color(200, 255, 230)
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val BORDER_COLOR = Color(20, 30, 40)
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val Characters = loadCharacters()
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private fun loadCharacters(): Array<BufferedImage> {
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val img = ImageIO.read(javaClass.getResourceAsStream("/charset/unscii8x16.png"))
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val charactersImage = BufferedImage(img.width, img.height, BufferedImage.TYPE_INT_ARGB)
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charactersImage.createGraphics().drawImage(img, 0, 0, null)
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val black = Color(0, 0, 0).rgb
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val foreground = FG_COLOR.rgb
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val nopixel = Color(0, 0, 0, 0).rgb
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for (y in 0 until charactersImage.height) {
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for (x in 0 until charactersImage.width) {
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val col = charactersImage.getRGB(x, y)
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if (col == black) charactersImage.setRGB(x, y, nopixel)
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else charactersImage.setRGB(x, y, foreground)
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}
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}
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val numColumns = charactersImage.width/8
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val charImages = (0..255).map {
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val charX = it%numColumns
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val charY = it/numColumns
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charactersImage.getSubimage(charX*8, charY*16, 8, 16)
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}
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return charImages.toTypedArray()
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}
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}
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private class BitmapScreenPanel : JPanel() {
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private val image: BufferedImage
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private val g2d: Graphics2D
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private var cursorX: Int = 0
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private var cursorY: Int = 0
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private var cursorState: Boolean = false
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init {
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val ge = GraphicsEnvironment.getLocalGraphicsEnvironment()
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val gd = ge.defaultScreenDevice.defaultConfiguration
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image = gd.createCompatibleImage(ScreenDefs.SCREEN_WIDTH, ScreenDefs.SCREEN_HEIGHT, Transparency.OPAQUE)
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g2d = image.graphics as Graphics2D
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val size = Dimension((image.width*ScreenDefs.PIXEL_SCALING).toInt(),
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(image.height*ScreenDefs.PIXEL_SCALING).toInt())
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minimumSize = size
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maximumSize = size
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preferredSize = size
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isFocusable = true
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isDoubleBuffered = false
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requestFocusInWindow()
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clearScreen()
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}
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override fun paint(graphics: Graphics) {
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val g2d = graphics as Graphics2D
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g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR)
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g2d.drawImage(image, 0, 0, (image.width*ScreenDefs.PIXEL_SCALING).toInt(),
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(image.height*ScreenDefs.PIXEL_SCALING).toInt(), null)
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if (cursorState) {
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val scx = (cursorX*ScreenDefs.PIXEL_SCALING*8).toInt()
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val scy = (cursorY*ScreenDefs.PIXEL_SCALING*16).toInt()
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val scw = (8*ScreenDefs.PIXEL_SCALING).toInt()
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val sch = (16*ScreenDefs.PIXEL_SCALING).toInt()
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g2d.setXORMode(Color.CYAN)
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g2d.fillRect(scx, scy, scw, sch)
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g2d.setPaintMode()
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}
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Toolkit.getDefaultToolkit().sync()
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}
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fun clearScreen() {
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g2d.background = ScreenDefs.BG_COLOR
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g2d.clearRect(0, 0, ScreenDefs.SCREEN_WIDTH, ScreenDefs.SCREEN_HEIGHT)
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cursorPos(0, 0)
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}
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fun setPixel(x: Int, y: Int, onOff: Boolean) {
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if (onOff) image.setRGB(x, y, ScreenDefs.FG_COLOR.rgb)
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else image.setRGB(x, y, ScreenDefs.BG_COLOR.rgb)
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}
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fun getPixel(x: Int, y: Int) = image.getRGB(x, y) != ScreenDefs.BG_COLOR.rgb
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fun setChar(x: Int, y: Int, character: Char) {
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g2d.clearRect(8*x, 16*y, 8, 16)
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val coloredImage = ScreenDefs.Characters[character.toInt()]
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g2d.drawImage(coloredImage, 8*x, 16*y, null)
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}
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fun scrollUp() {
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g2d.copyArea(0, 16, ScreenDefs.SCREEN_WIDTH, ScreenDefs.SCREEN_HEIGHT-16, 0, -16)
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g2d.background = ScreenDefs.BG_COLOR
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g2d.clearRect(0, ScreenDefs.SCREEN_HEIGHT-16, ScreenDefs.SCREEN_WIDTH, 16)
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}
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fun mousePixelPosition(): Point? {
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val pos = mousePosition ?: return null
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return Point((pos.x/ScreenDefs.PIXEL_SCALING).toInt(), (pos.y/ScreenDefs.PIXEL_SCALING).toInt())
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}
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fun cursorPos(x: Int, y: Int) {
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if (x != cursorX || y != cursorY) cursorState = true
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cursorX = x
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cursorY = y
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}
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fun blinkCursor() {
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cursorState = !cursorState
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}
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}
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class MainWindow(title: String) : JFrame(title), KeyListener, MouseInputListener, IHostInterface {
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private val canvas = BitmapScreenPanel()
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private val keyboardBuffer = ArrayDeque<Char>()
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private var mousePos = Point(0, 0)
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private var leftButton = false
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private var rightButton = false
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private var middleButton = false
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init {
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contentPane.layout = GridBagLayout()
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defaultCloseOperation = EXIT_ON_CLOSE
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isResizable = false
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isFocusable = true
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contentPane.background = ScreenDefs.BORDER_COLOR
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val gc = GridBagConstraints()
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gc.fill = GridBagConstraints.BOTH
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gc.gridx = 1
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gc.gridy = 1
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gc.insets = Insets(ScreenDefs.BORDER_SIZE, ScreenDefs.BORDER_SIZE, ScreenDefs.BORDER_SIZE, ScreenDefs.BORDER_SIZE)
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contentPane.add(canvas, gc)
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addKeyListener(this)
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addMouseMotionListener(this)
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addMouseListener(this)
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setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, mutableSetOf())
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pack()
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setLocationRelativeTo(null)
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location = Point(location.x/2, location.y)
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requestFocusInWindow()
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}
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fun start(updateRate: Int) {
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// repaint the screen's back buffer
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var cursorBlink = 0L
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val repaintTimer = javax.swing.Timer(1000/updateRate) {
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repaint()
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if (it.`when`-cursorBlink > 200L) {
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cursorBlink = it.`when`
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canvas.blinkCursor()
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}
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}
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repaintTimer.initialDelay = 0
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repaintTimer.start()
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}
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// keyboard events:
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override fun keyTyped(event: KeyEvent) {
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keyboardBuffer.add(event.keyChar)
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while (keyboardBuffer.size > 8) keyboardBuffer.pop()
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}
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override fun keyPressed(event: KeyEvent) {}
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override fun keyReleased(event: KeyEvent) {}
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// mouse events:
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override fun mousePressed(event: MouseEvent) {
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val pos = canvas.mousePixelPosition()
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if (pos == null) return
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else {
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mousePos = pos
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leftButton = leftButton or SwingUtilities.isLeftMouseButton(event)
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rightButton = rightButton or SwingUtilities.isRightMouseButton(event)
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middleButton = middleButton or SwingUtilities.isMiddleMouseButton(event)
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}
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}
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override fun mouseReleased(event: MouseEvent) {
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val pos = canvas.mousePixelPosition()
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if (pos == null) return
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else {
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mousePos = pos
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leftButton = leftButton xor SwingUtilities.isLeftMouseButton(event)
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rightButton = rightButton xor SwingUtilities.isRightMouseButton(event)
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middleButton = middleButton xor SwingUtilities.isMiddleMouseButton(event)
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}
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}
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override fun mouseEntered(event: MouseEvent) {}
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override fun mouseExited(event: MouseEvent) {}
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override fun mouseDragged(event: MouseEvent) = mouseMoved(event)
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override fun mouseClicked(event: MouseEvent) {}
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override fun mouseMoved(event: MouseEvent) {
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val pos = canvas.mousePixelPosition()
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if (pos == null) return
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else mousePos = pos
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}
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// the overrides required for IHostDisplay:
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override fun clearScreen() = canvas.clearScreen()
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override fun setPixel(x: Int, y: Int) = canvas.setPixel(x, y, true)
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override fun clearPixel(x: Int, y: Int) = canvas.setPixel(x, y, false)
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override fun getPixel(x: Int, y: Int) = canvas.getPixel(x, y)
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override fun setChar(x: Int, y: Int, character: Char) = canvas.setChar(x, y, character)
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override fun cursor(x: Int, y: Int) = canvas.cursorPos(x, y)
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override fun scrollUp() = canvas.scrollUp()
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override fun mouse() = IHostInterface.MouseInfo(mousePos.x, mousePos.y, leftButton, rightButton, middleButton)
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override fun keyboard(): Char? {
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return if (keyboardBuffer.isEmpty()) null
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else keyboardBuffer.pop()
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}
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fun reset() {
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// when the reset button is pressed
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}
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}
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