import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
+import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
+import java.io.ByteArrayInputStream;
import java.io.CharArrayWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
+import javax.imageio.ImageIO;
import jexer.TKeypress;
import jexer.backend.GlyphMaker;
/**
* The type of emulator to be.
*/
- private DeviceType type = DeviceType.VT102;
+ private final DeviceType type;
/**
* The scrollback buffer characters + attributes.
/**
* Non-csi collect buffer.
*/
- private StringBuilder collectBuffer;
+ private StringBuilder collectBuffer = new StringBuilder(128);
/**
* When true, use the G1 character set.
/**
* Sixel collection buffer.
*/
- private StringBuilder sixelParseBuffer;
+ private StringBuilder sixelParseBuffer = new StringBuilder(2048);
+
+ /**
+ * Sixel shared palette.
+ */
+ private HashMap<Integer, java.awt.Color> sixelPalette;
/**
* The width of a character cell in pixels.
this.inputStream = new TimeoutInputStream(inputStream, 2000);
}
if (type == DeviceType.XTERM) {
- this.input = new InputStreamReader(this.inputStream, "UTF-8");
+ this.input = new InputStreamReader(new BufferedInputStream(
+ this.inputStream, 1024 * 128), "UTF-8");
this.output = new OutputStreamWriter(new
BufferedOutputStream(outputStream), "UTF-8");
this.outputStream = null;
int ch = Character.codePointAt(readBufferUTF8,
i);
i += Character.charCount(ch);
- consume(ch);
+
+ // Special case for VT10x: 7-bit characters
+ // only.
+ if ((type == DeviceType.VT100)
+ || (type == DeviceType.VT102)
+ ) {
+ consume(ch & 0x7F);
+ } else {
+ consume(ch);
+ }
}
} else {
for (int i = 0; i < rc; i++) {
- consume(readBuffer[i]);
+ // Special case for VT10x: 7-bit characters
+ // only.
+ if ((type == DeviceType.VT100)
+ || (type == DeviceType.VT102)
+ ) {
+ consume(readBuffer[i] & 0x7F);
+ } else {
+ consume(readBuffer[i]);
+ }
}
}
}
case VT220:
case XTERM:
- // "I am a VT220" - 7 bit version
+ // "I am a VT220" - 7 bit version, with sixel and Jexer image
+ // support.
if (!s8c1t) {
- return "\033[?62;1;6;9;4c";
+ return "\033[?62;1;6;9;4;22;444c";
}
- // "I am a VT220" - 8 bit version
- return "\u009b?62;1;6;9;4c";
+ // "I am a VT220" - 8 bit version, with sixel and Jexer image
+ // support.
+ return "\u009b?62;1;6;9;4;22;444c";
default:
throw new IllegalArgumentException("Invalid device type: " + type);
}
*/
private void toGround() {
csiParams.clear();
- collectBuffer = new StringBuilder(8);
+ collectBuffer.setLength(0);
scanState = ScanState.GROUND;
}
break;
+ case 80:
+ if (type == DeviceType.XTERM) {
+ if (decPrivateModeFlag == true) {
+ if (value == true) {
+ // Enable sixel scrolling (default).
+ // TODO
+ } else {
+ // Disable sixel scrolling.
+ // TODO
+ }
+ }
+ }
+
+ break;
+
case 1000:
if ((type == DeviceType.XTERM)
&& (decPrivateModeFlag == true)
}
break;
+ case 1070:
+ if (type == DeviceType.XTERM) {
+ if (decPrivateModeFlag == true) {
+ if (value == true) {
+ // Use private color registers for each sixel
+ // graphic (default).
+ sixelPalette = null;
+ } else {
+ // Use shared color registers for each sixel
+ // graphic.
+ sixelPalette = new HashMap<Integer, java.awt.Color>();
+ }
+ }
+ }
+ break;
+
default:
break;
color.getBlue() << 8));
}
}
+
+ if (p[0].equals("444")) {
+ if (p[1].equals("0") && (p.length == 6)) {
+ // Jexer image - RGB
+ parseJexerImageRGB(p[2], p[3], p[4], p[5]);
+ } else if (p[1].equals("1") && (p.length == 4)) {
+ // Jexer image - PNG
+ parseJexerImageFile(1, p[2], p[3]);
+ } else if (p[1].equals("2") && (p.length == 4)) {
+ // Jexer image - JPG
+ parseJexerImageFile(2, p[2], p[3]);
+ }
+ }
}
// Go to SCAN_GROUND state
*
* @param ch character from the remote side
*/
- private void consume(int ch) {
+ private void consume(final int ch) {
// DEBUG
// System.err.printf("%c STATE = %s\n", ch, scanState);
- // Special case for VT10x: 7-bit characters only
- if ((type == DeviceType.VT100) || (type == DeviceType.VT102)) {
- ch = (ch & 0x7F);
- }
-
// Special "anywhere" states
// 18, 1A --> execute, then switch to SCAN_GROUND
// 0x71 goes to DCS_SIXEL
if (ch == 0x71) {
- sixelParseBuffer = new StringBuilder();
+ sixelParseBuffer.setLength(0);
scanState = ScanState.DCS_SIXEL;
} else if ((ch >= 0x40) && (ch <= 0x7E)) {
// 0x40-7E goes to DCS_PASSTHROUGH
// 0x71 goes to DCS_SIXEL
if (ch == 0x71) {
- sixelParseBuffer = new StringBuilder();
+ sixelParseBuffer.setLength(0);
scanState = ScanState.DCS_SIXEL;
} else if ((ch >= 0x40) && (ch <= 0x7E)) {
// 0x40-7E goes to DCS_PASSTHROUGH
if (ch == 0x9C) {
parseSixel();
toGround();
+ return;
}
// 0x1B 0x5C goes to GROUND
if (ch == 0x1B) {
collect((char) ch);
+ return;
}
if (ch == 0x5C) {
if ((collectBuffer.length() > 0)
) {
parseSixel();
toGround();
+ return;
}
}
// 00-17, 19, 1C-1F, 20-7E --> put
- if (ch <= 0x17) {
- sixelParseBuffer.append((char) ch);
- return;
- }
- if (ch == 0x19) {
- sixelParseBuffer.append((char) ch);
- return;
- }
- if ((ch >= 0x1C) && (ch <= 0x1F)) {
- sixelParseBuffer.append((char) ch);
- return;
- }
- if ((ch >= 0x20) && (ch <= 0x7E)) {
+ if ((ch <= 0x17)
+ || (ch == 0x19)
+ || ((ch >= 0x1C) && (ch <= 0x1F))
+ || ((ch >= 0x20) && (ch <= 0x7E))
+ ) {
sixelParseBuffer.append((char) ch);
- return;
}
// 7F --> ignore
-
return;
case SOSPMAPC_STRING:
return mouseProtocol;
}
- // ------------------------------------------------------------------------
- // Sixel support ----------------------------------------------------------
- // ------------------------------------------------------------------------
+ /**
+ * Draw the left and right cells of a two-cell-wide (full-width) glyph.
+ *
+ * @param leftX the x position to draw the left half to
+ * @param leftY the y position to draw the left half to
+ * @param rightX the x position to draw the right half to
+ * @param rightY the y position to draw the right half to
+ * @param ch the character to draw
+ */
+ private void drawHalves(final int leftX, final int leftY,
+ final int rightX, final int rightY, final int ch) {
+
+ // System.err.println("drawHalves(): " + Integer.toHexString(ch));
+
+ if (lastTextHeight != textHeight) {
+ glyphMaker = GlyphMaker.getInstance(textHeight);
+ lastTextHeight = textHeight;
+ }
+
+ Cell cell = new Cell(ch, currentState.attr);
+ BufferedImage image = glyphMaker.getImage(cell, textWidth * 2,
+ textHeight);
+ BufferedImage leftImage = image.getSubimage(0, 0, textWidth,
+ textHeight);
+ BufferedImage rightImage = image.getSubimage(textWidth, 0, textWidth,
+ textHeight);
+
+ Cell left = new Cell(cell);
+ left.setImage(leftImage);
+ left.setWidth(Cell.Width.LEFT);
+ display.get(leftY).replace(leftX, left);
+
+ Cell right = new Cell(cell);
+ right.setImage(rightImage);
+ right.setWidth(Cell.Width.RIGHT);
+ display.get(rightY).replace(rightX, right);
+ }
/**
* Set the width of a character cell in pixels.
/*
System.err.println("parseSixel(): '" + sixelParseBuffer.toString()
+ "'");
- */
+ */
- Sixel sixel = new Sixel(sixelParseBuffer.toString());
+ Sixel sixel = new Sixel(sixelParseBuffer.toString(), sixelPalette);
BufferedImage image = sixel.getImage();
// System.err.println("parseSixel(): image " + image);
// Sixel data was malformed in some way, bail out.
return;
}
+ if ((image.getWidth() < 1)
+ || (image.getWidth() > 10000)
+ || (image.getHeight() < 1)
+ || (image.getHeight() > 10000)
+ ) {
+ return;
+ }
+
+ imageToCells(image, true);
+ }
+
+ /**
+ * Parse a "Jexer" RGB image string into a bitmap image, and overlay that
+ * image onto the text cells.
+ *
+ * @param pw width token
+ * @param ph height token
+ * @param ps scroll token
+ * @param data pixel data
+ */
+ private void parseJexerImageRGB(final String pw, final String ph,
+ final String ps, final String data) {
+
+ int imageWidth = 0;
+ int imageHeight = 0;
+ boolean scroll = false;
+ try {
+ imageWidth = Integer.parseInt(pw);
+ imageHeight = Integer.parseInt(ph);
+ } catch (NumberFormatException e) {
+ // SQUASH
+ return;
+ }
+ if ((imageWidth < 1)
+ || (imageWidth > 10000)
+ || (imageHeight < 1)
+ || (imageHeight > 10000)
+ ) {
+ return;
+ }
+ if (ps.equals("1")) {
+ scroll = true;
+ } else if (ps.equals("0")) {
+ scroll = false;
+ } else {
+ return;
+ }
+
+ java.util.Base64.Decoder base64 = java.util.Base64.getDecoder();
+ byte [] bytes = base64.decode(data);
+ if (bytes.length != (imageWidth * imageHeight * 3)) {
+ return;
+ }
+
+ BufferedImage image = new BufferedImage(imageWidth, imageHeight,
+ BufferedImage.TYPE_INT_ARGB);
+
+ for (int x = 0; x < imageWidth; x++) {
+ for (int y = 0; y < imageHeight; y++) {
+ int red = bytes[(y * imageWidth * 3) + (x * 3) ];
+ if (red < 0) {
+ red += 256;
+ }
+ int green = bytes[(y * imageWidth * 3) + (x * 3) + 1];
+ if (green < 0) {
+ green += 256;
+ }
+ int blue = bytes[(y * imageWidth * 3) + (x * 3) + 2];
+ if (blue < 0) {
+ blue += 256;
+ }
+ int rgb = 0xFF000000 | (red << 16) | (green << 8) | blue;
+ image.setRGB(x, y, rgb);
+ }
+ }
+
+ imageToCells(image, scroll);
+ }
+
+ /**
+ * Parse a "Jexer" PNG or JPG image string into a bitmap image, and
+ * overlay that image onto the text cells.
+ *
+ * @param type 1 for PNG, 2 for JPG
+ * @param ps scroll token
+ * @param data pixel data
+ */
+ private void parseJexerImageFile(final int type, final String ps,
+ final String data) {
+
+ int imageWidth = 0;
+ int imageHeight = 0;
+ boolean scroll = false;
+ BufferedImage image = null;
+ try {
+ java.util.Base64.Decoder base64 = java.util.Base64.getDecoder();
+ byte [] bytes = base64.decode(data);
+
+ switch (type) {
+ case 1:
+ if ((bytes[0] != (byte) 0x89)
+ || (bytes[1] != 'P')
+ || (bytes[2] != 'N')
+ || (bytes[3] != 'G')
+ || (bytes[4] != (byte) 0x0D)
+ || (bytes[5] != (byte) 0x0A)
+ || (bytes[6] != (byte) 0x1A)
+ || (bytes[7] != (byte) 0x0A)
+ ) {
+ // File does not have PNG header, bail out.
+ return;
+ }
+ break;
+
+ case 2:
+ if ((bytes[0] != (byte) 0XFF)
+ || (bytes[1] != (byte) 0xD8)
+ || (bytes[2] != (byte) 0xFF)
+ ) {
+ // File does not have JPG header, bail out.
+ return;
+ }
+ break;
+
+ default:
+ // Unsupported type, bail out.
+ return;
+ }
+
+ image = ImageIO.read(new ByteArrayInputStream(bytes));
+ } catch (IOException e) {
+ // SQUASH
+ return;
+ }
+ assert (image != null);
+ imageWidth = image.getWidth();
+ imageHeight = image.getHeight();
+ if ((imageWidth < 1)
+ || (imageWidth > 10000)
+ || (imageHeight < 1)
+ || (imageHeight > 10000)
+ ) {
+ return;
+ }
+ if (ps.equals("1")) {
+ scroll = true;
+ } else if (ps.equals("0")) {
+ scroll = false;
+ } else {
+ return;
+ }
+
+ imageToCells(image, scroll);
+ }
+
+ /**
+ * Break up an image into the cells at the current cursor.
+ *
+ * @param image the image to display
+ * @param scroll if true, scroll the image and move the cursor
+ */
+ private void imageToCells(final BufferedImage image, final boolean scroll) {
+ assert (image != null);
/*
* Procedure:
}
int x0 = currentState.cursorX;
+ int y0 = currentState.cursorY;
for (int y = 0; y < cellRows; y++) {
for (int x = 0; x < cellColumns; x++) {
- printCharacter(' ');
- cursorLeft(1, false);
- if ((x == cellColumns - 1) || (y == cellRows - 1)) {
- // TODO: render text of current cell first, then image
- // over it. For now, just copy the cell.
- DisplayLine line = display.get(currentState.cursorY);
- line.replace(currentState.cursorX, cells[x][y]);
- } else {
- // Copy the image cell into the display.
- DisplayLine line = display.get(currentState.cursorY);
- line.replace(currentState.cursorX, cells[x][y]);
+ assert (currentState.cursorX <= rightMargin);
+
+ // TODO: Render text of current cell first, then image over
+ // it (accounting for blank pixels). For now, just copy the
+ // cell.
+ DisplayLine line = display.get(currentState.cursorY);
+ line.replace(currentState.cursorX, cells[x][y]);
+
+ // If at the end of the visible screen, stop.
+ if (currentState.cursorX == rightMargin) {
+ break;
}
- cursorRight(1, false);
+ // Room for more image on the visible screen.
+ currentState.cursorX++;
+ }
+ if (currentState.cursorY < scrollRegionBottom - 1) {
+ // Not at the bottom, down a line.
+ linefeed();
+ } else if (scroll == true) {
+ // At the bottom, scroll as needed.
+ linefeed();
+ } else {
+ // At the bottom, no more scrolling, done.
+ break;
}
- linefeed();
cursorPosition(currentState.cursorY, x0);
}
- }
-
- /**
- * Draw the left and right cells of a two-cell-wide (full-width) glyph.
- *
- * @param leftX the x position to draw the left half to
- * @param leftY the y position to draw the left half to
- * @param rightX the x position to draw the right half to
- * @param rightY the y position to draw the right half to
- * @param ch the character to draw
- */
- private void drawHalves(final int leftX, final int leftY,
- final int rightX, final int rightY, final int ch) {
-
- // System.err.println("drawHalves(): " + Integer.toHexString(ch));
-
- if (lastTextHeight != textHeight) {
- glyphMaker = GlyphMaker.getInstance(textHeight);
- lastTextHeight = textHeight;
+ if (scroll == false) {
+ cursorPosition(y0, x0);
}
- Cell cell = new Cell(ch, currentState.attr);
- BufferedImage image = glyphMaker.getImage(cell, textWidth * 2,
- textHeight);
- BufferedImage leftImage = image.getSubimage(0, 0, textWidth,
- textHeight);
- BufferedImage rightImage = image.getSubimage(textWidth, 0, textWidth,
- textHeight);
-
- Cell left = new Cell(cell);
- left.setImage(leftImage);
- left.setWidth(Cell.Width.LEFT);
- display.get(leftY).replace(leftX, left);
-
- Cell right = new Cell(cell);
- right.setImage(rightImage);
- right.setWidth(Cell.Width.RIGHT);
- display.get(rightY).replace(rightX, right);
}
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff