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This commit is contained in:
Gregory Rudolph
2026-09-12 15:33:12 +00:00
parent c28c097e25
commit bdfe6eec2a
5 changed files with 184 additions and 53 deletions
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lib3270j/src/test/java/haus/nightmare/lib3270j/graphics/GocaDecoderTest.java
+73
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@@ -285,6 +285,79 @@ public class GocaDecoderTest {
assertTrue(plane.hasContent(), "Expected plane to have content after image decoding");
}
@Test
public void testImonGddmImageRendering() throws Exception {
GraphicsPlane plane = new GraphicsPlane(1040, 1118);
plane.setCharDimensions(13, 26);
plane.setScreenDimensions(80, 43);
GocaDecoder decoder = new GocaDecoder(plane);
assertEquals(1040, plane.getTotalWidth());
assertEquals(1118, plane.getTotalHeight());
assertEquals(520, plane.getXMax());
assertEquals(558, plane.getYMax());
ByteArrayOutputStream out = new 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); // flags/format
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(new byte[] { (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF });
// G_GEIMG (0x93): End Image with 2-byte operand (02 00 00 as sent by IMON)
out.write(GocaConstants.G_GEIMG);
out.write(0x02);
out.write(0x00); out.write(0x00);
// Subsequent order to verify stream synchronization: GSCOL Color 2 = Red
out.write(GocaConstants.G_GSCOL);
out.write(0x02);
// G_GBIMGC (0x91): Second image tile
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(new byte[] { (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA, (byte)0xAA });
out.write(GocaConstants.G_GEIMG);
out.write(0x02);
out.write(0x00); out.write(0x00);
byte[] stream = out.toByteArray();
decoder.decodeStream(stream, 0, stream.length);
assertTrue(plane.hasContent(), "Expected plane to have content after IMON GOCA decoding");
int mappedX = plane.mapX(377);
int mappedY = plane.mapY(494);
assertEquals(897, mappedX);
assertEquals(64, mappedY);
int[] rgb = plane.getRgbBuffer();
int pixelAtImg = rgb[mappedY * 1040 + mappedX];
assertNotEquals(0, pixelAtImg, "Pixel at image location should be rendered");
}
@Test
public void testDirectObjectControlSf24() {
haus.nightmare.lib3270j.screen.ScreenBuffer sb = new haus.nightmare.lib3270j.screen.ScreenBuffer(