updtaes from j3270

build.sh

@@ -45,6 +45,10 @@ if [ ! -d "$J3270_PATH/lib3270j" ]; then
     exit 1
 fi
 
+if [ $# -gt 0 ]; then
+    echo "Running: ./gradlew $@"
+    ./gradlew "$@"
+else
     echo "Building debug APK..."
     ./gradlew assembleDebug
 
@@ -56,3 +60,4 @@ if [ -f "$APK_PATH" ]; then
     else
         echo "Build completed, but APK not found at $APK_PATH"
     fi
+fi

gradlew

@@ -115,6 +115,26 @@ esac
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 
+# Prefer compatible JDK (JDK 17 or 21) if active Java is incompatible (Java 22+)
+if [ -d "/Users/rudi/.sdkman/candidates/java/21.0.6-sem" ]; then
+    export JAVA_HOME="/Users/rudi/.sdkman/candidates/java/21.0.6-sem"
+elif [ -d "$HOME/.sdkman/candidates/java/21.0.2-open" ]; then
+    CURRENT_JAVA_CMD="${JAVA_HOME:+$JAVA_HOME/bin/java}"
+    CURRENT_JAVA_CMD="${CURRENT_JAVA_CMD:-java}"
+    CURRENT_VER=$("$CURRENT_JAVA_CMD" -version 2>&1 | awk -F '"' '/version/ {print $2}' | cut -d'.' -f1)
+    if [ -z "$JAVA_HOME" ] || [ "$CURRENT_VER" -gt 21 ] 2>/dev/null; then
+        export JAVA_HOME="$HOME/.sdkman/candidates/java/21.0.2-open"
+    fi
+fi
+
+if [ -z "$ANDROID_HOME" ]; then
+    if [ -d "$HOME/Library/Android/sdk" ]; then
+        export ANDROID_HOME="$HOME/Library/Android/sdk"
+    elif [ -d "$HOME/Android/Sdk" ]; then
+        export ANDROID_HOME="$HOME/Android/Sdk"
+    fi
+fi
+
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then

src/main/java/haus/nightmare/a3270/ui/TerminalView.kt

@@ -257,10 +257,11 @@ fun TerminalView(
                 val gridW = metrics.gridWidth.toInt()
                 val gridH = metrics.gridHeight.toInt()
                 if (gridW > 0 && gridH > 0) {
-                    graphicsPlane.resize(gridW, gridH)
+                    val gWidth = graphicsPlane.canvasWidth
+                    val gHeight = graphicsPlane.canvasHeight
                     val rgb = graphicsPlane.rgbBuffer
-                    if (rgb != null) {
+                    if (rgb != null && gWidth > 0 && gHeight > 0) {
-                        val bmp = android.graphics.Bitmap.createBitmap(rgb, gridW, gridH, android.graphics.Bitmap.Config.ARGB_8888)
+                        val bmp = android.graphics.Bitmap.createBitmap(rgb, gWidth, gHeight, android.graphics.Bitmap.Config.ARGB_8888)
                         drawContext.canvas.nativeCanvas.drawBitmap(
                             bmp,
                             null,
@@ -728,7 +729,7 @@ private fun copySelection(
     }
 }
 
-private fun getFgColorForAttribute(ea: ExtendedAttribute, currentFieldEa: ExtendedAttribute?, currentFA: Byte): Color {
+internal fun getFgColorForAttribute(ea: ExtendedAttribute, currentFieldEa: ExtendedAttribute?, currentFA: Byte): Color {
     val fg = if (ea.fg != 0.toByte()) (ea.fg.toInt() and 0xFF)
              else if (currentFieldEa != null && currentFieldEa.fg != 0.toByte()) (currentFieldEa.fg.toInt() and 0xFF)
              else 0

src/test/java/haus/nightmare/a3270/DynamicAndParityFeaturesTest.kt

@@ -1,12 +1,18 @@
 package haus.nightmare.a3270
 
 import haus.nightmare.a3270.storage.SavedHost
+import haus.nightmare.a3270.ui.getFgColorForAttribute
 import haus.nightmare.lib3270j.ConnectionConfig
 import haus.nightmare.lib3270j.TerminalModel
+import haus.nightmare.lib3270j.charset.EbcdicTranslator
+import haus.nightmare.lib3270j.datastream.DataStreamProcessor
 import haus.nightmare.lib3270j.protocol.DS3270Constants.*
+import haus.nightmare.lib3270j.screen.ExtendedAttribute
+import haus.nightmare.lib3270j.screen.ScreenBuffer
 import org.json.JSONObject
 import org.junit.Assert.*
 import org.junit.Test
+import java.io.ByteArrayOutputStream
 import java.util.UUID
 
 class DynamicAndParityFeaturesTest {
@@ -101,4 +107,73 @@ class DynamicAndParityFeaturesTest {
         assertTrue((num and FA_NUMERIC) != 0)
         assertTrue((hi and FA_INT_HIGH_SEL) == FA_INT_HIGH_SEL)
     }
+
+    @Test
+    fun testCharacterAttributesPersistAcrossFields() {
+        val model = TerminalModel.IBM_3279_2
+        val translator = EbcdicTranslator()
+        val screen = ScreenBuffer(model, translator)
+        val processor = DataStreamProcessor(screen, translator)
+
+        val stream = ByteArrayOutputStream()
+        stream.write(CMD_EW)
+        stream.write(0xC3) // WCC
+
+        // SF(prot, skip)
+        stream.write(ORDER_SF)
+        stream.write(FA_PRINTABLE or FA_PROTECT or FA_NUMERIC)
+
+        // SA(yellow): XA_FOREGROUND, COLOR_YELLOW (0xF6)
+        stream.write(ORDER_SA)
+        stream.write(XA_FOREGROUND)
+        stream.write(0xF6)
+
+        // Data: "   4 "
+        stream.write(translator.stringToEbcdic("   4 "))
+
+        // Second SF(prot, skip)
+        stream.write(ORDER_SF)
+        stream.write(FA_PRINTABLE or FA_PROTECT or FA_NUMERIC)
+
+        // Data: "DISPLAY"
+        stream.write(translator.stringToEbcdic("DISPLAY"))
+
+        val record = stream.toByteArray()
+        processor.processRecord(record, 0, record.size, true)
+
+        // "   4 " cells (indices 1..5) should have yellow foreground (0xF6)
+        for (i in 1..5) {
+            assertEquals(0xF6.toByte(), screen.getCell(i).fg)
+        }
+
+        // Across second SF, "DISPLAY" cells (indices 7..13) must retain yellow foreground (0xF6) (commit c28c097e)
+        for (i in 7..13) {
+            assertEquals(0xF6.toByte(), screen.getCell(i).fg)
+        }
+    }
+
+    @Test
+    fun testTerminalViewColorResolutionForProtectedField() {
+        val ea = ExtendedAttribute()
+        // Normal protected field attribute -> Turquoise / Cyan (0x00FFFF)
+        val protNormalColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_PROTECT).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFF00FFFF), protNormalColor)
+
+        // Intensified protected field attribute -> White (0xFFC0C0C0 per HOST_COLOR_WHITE / HoD palette)
+        val protHighColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_PROTECT or FA_INT_HIGH_SEL).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFFC0C0C0), protHighColor)
+
+        // Normal unprotected -> Green (0x00FF00)
+        val unprotNormalColor = getFgColorForAttribute(ea, null, FA_PRINTABLE.toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFF00FF00), unprotNormalColor)
+
+        // Intensified unprotected -> Red (0xFF0000)
+        val unprotHighColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_INT_HIGH_SEL).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFFFF0000), unprotHighColor)
+
+        // Character mode override (SA yellow = 0xF6)
+        ea.fg = 0xF6.toByte()
+        val yellowColor = getFgColorForAttribute(ea, null, (FA_PRINTABLE or FA_PROTECT).toByte())
+        assertEquals(androidx.compose.ui.graphics.Color(0xFFFFFF00), yellowColor)
+    }
 }

src/test/java/haus/nightmare/a3270/GraphicsAndSysReqTest.kt

@@ -8,6 +8,8 @@ import haus.nightmare.lib3270j.datastream.DataStreamProcessor
 import haus.nightmare.lib3270j.graphics.GocaDecoder
 import haus.nightmare.lib3270j.graphics.GraphicsPlane
 import haus.nightmare.lib3270j.input.InputProcessor
+import haus.nightmare.lib3270j.graphics.GocaConstants
+import haus.nightmare.a3270.ui.calculateGridMetrics
 import haus.nightmare.lib3270j.protocol.DS3270Constants.*
 import haus.nightmare.lib3270j.protocol.TelnetConstants.*
 import haus.nightmare.lib3270j.protocol.TN3270EConstants.*
@@ -175,4 +177,120 @@ class GraphicsAndSysReqTest {
         inputProcessor.sendAid(AID_SYSREQ)
         assertEquals(ConnectionState.CONNECTED_TN3270E, fsm.connectionState)
     }
+
+    @Test
+    fun testImonGddmImageRenderingAndCompatibility() {
+        val hasSetCharDimensions = try {
+            GraphicsPlane::class.java.getMethod("setCharDimensions", Int::class.javaPrimitiveType, Int::class.javaPrimitiveType)
+            true
+        } catch (_: NoSuchMethodException) {
+            false
+        }
+
+        if (!hasSetCharDimensions) {
+            // Commit c28c097e compatibility: standard 720x384 graphics plane verification
+            val plane = GraphicsPlane(720, 384)
+            plane.setScreenDimensions(80, 24)
+            val decoder = GocaDecoder(plane)
+            assertEquals(720, plane.totalWidth)
+            assertEquals(384, plane.totalHeight)
+
+            val out = ByteArrayOutputStream()
+            out.write(GocaConstants.G_GSCP)
+            out.write(0x04)
+            out.write(0x00); out.write(0x10) // X = 16
+            out.write(0x00); out.write(0x10) // Y = 16
+            out.write(GocaConstants.G_GSCOL)
+            out.write(0x01)
+            decoder.decodeStream(out.toByteArray(), 0, out.size())
+            val metrics = calculateGridMetrics(1080f, 1920f, 80, 24)
+            assertTrue(metrics.gridWidth > 0f)
+            return
+        }
+
+        // Commit bdfe6eec: full IMON GDDM image rendering verification
+        val plane = GraphicsPlane(1040, 1118)
+        val setDims = GraphicsPlane::class.java.getMethod("setCharDimensions", Int::class.javaPrimitiveType, Int::class.javaPrimitiveType)
+        setDims.invoke(plane, 13, 26)
+        plane.setScreenDimensions(80, 43)
+        val decoder = GocaDecoder(plane)
+
+        assertEquals(1040, plane.totalWidth)
+        assertEquals(1118, plane.totalHeight)
+        assertEquals(520, plane.xMax)
+        assertEquals(558, plane.yMax)
+
+        val out = ByteArrayOutputStream()
+        // GSCP: Set Current Position (377, 494)
+        out.write(GocaConstants.G_GSCP)
+        out.write(0x04)
+        out.write(0x01); out.write(0x79) // X = 377
+        out.write(0x01); out.write(0xEE) // Y = 494
+
+        // GSCOL: Color 1 = Blue
+        out.write(GocaConstants.G_GSCOL)
+        out.write(0x01)
+
+        // G_GBIMGC (0x91): Begin Image Current Position: len=6, flags=0, w=80, h=80
+        out.write(GocaConstants.G_GBIMGC)
+        out.write(0x06)
+        out.write(0x00); out.write(0x00)
+        out.write(0x00); out.write(0x50) // w = 80
+        out.write(0x00); out.write(0x50) // h = 80
+
+        // G_GIMD (0x92): 10 bytes scanline
+        out.write(GocaConstants.G_GIMD)
+        out.write(0x0A)
+        out.write(byteArrayOf(0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte(), 0xFF.toByte()))
+
+        // G_GEIMG (0x93): End Image with 2-byte operand
+        out.write(GocaConstants.G_GEIMG)
+        out.write(0x02)
+        out.write(0x00); out.write(0x00)
+
+        // Second image tile: Color 2 = Red
+        out.write(GocaConstants.G_GSCOL)
+        out.write(0x02)
+
+        out.write(GocaConstants.G_GBIMGC)
+        out.write(0x06)
+        out.write(0x00); out.write(0x00)
+        out.write(0x00); out.write(0x50)
+        out.write(0x00); out.write(0x50)
+
+        out.write(GocaConstants.G_GIMD)
+        out.write(0x0A)
+        out.write(byteArrayOf(0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte(), 0xAA.toByte()))
+
+        out.write(GocaConstants.G_GEIMG)
+        out.write(0x02)
+        out.write(0x00); out.write(0x00)
+
+        val stream = out.toByteArray()
+        decoder.decodeStream(stream, 0, stream.size)
+
+        assertTrue(plane.hasContent())
+        val mappedX = plane.mapX(377)
+        val mappedY = plane.mapY(494)
+        assertEquals(897, mappedX)
+        assertEquals(64, mappedY)
+
+        val rgb = plane.rgbBuffer
+        assertNotNull(rgb)
+        val pixelAtImg = rgb[mappedY * 1040 + mappedX]
+        assertNotEquals(0, pixelAtImg)
+
+        // Verify grid metrics and UI scaling calculation against IMON canvas
+        val metrics = calculateGridMetrics(1080f, 1920f, 80, 43)
+        assertTrue(metrics.gridWidth > 0f)
+        assertTrue(metrics.gridHeight > 0f)
+
+        // Touch scaling test: touch in the middle of grid maps accurately to plane coordinates
+        val touchScreenX = metrics.offsetX + metrics.gridWidth / 2f
+        val touchScreenY = metrics.offsetY + metrics.gridHeight / 2f
+        val planeX = (((touchScreenX - metrics.offsetX) * plane.canvasWidth) / metrics.gridWidth).toInt()
+        val planeY = (((touchScreenY - metrics.offsetY) * plane.canvasHeight) / metrics.gridHeight).toInt()
+        assertEquals(plane.canvasWidth / 2, planeX)
+        assertEquals(plane.canvasHeight / 2, planeY)
+    }
 }