*/
package jexer;
+import java.awt.image.BufferedImage;
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics2D;
+
+import java.io.InputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.text.MessageFormat;
import java.util.ArrayList;
+import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.ResourceBundle;
+import jexer.backend.ECMA48Terminal;
+import jexer.backend.MultiScreen;
+import jexer.backend.SwingTerminal;
import jexer.bits.Cell;
import jexer.bits.CellAttributes;
import jexer.event.TKeypressEvent;
public class TTerminalWindow extends TScrollableWindow
implements DisplayListener {
-
/**
* Translated strings.
*/
*/
private boolean closeOnExit = false;
+ /**
+ * System-dependent Y adjustment for text in the character cell
+ * (double-height).
+ */
+ private int doubleTextAdjustY = 0;
+
+ /**
+ * System-dependent X adjustment for text in the character cell
+ * (double-height).
+ */
+ private int doubleTextAdjustX = 0;
+
+ /**
+ * Descent of a character cell in pixels (double-height).
+ */
+ private int doubleMaxDescent = 0;
+
+ /**
+ * Double-width font.
+ */
+ private Font doubleFont = null;
+
+ /**
+ * Last text width value.
+ */
+ private int lastTextWidth = -1;
+
+ /**
+ * Last text height value.
+ */
+ private int lastTextHeight = -1;
+
+ /**
+ * A cache of previously-rendered double-width glyphs.
+ */
+ private Map<Cell, BufferedImage> glyphCache;
+
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
// ------------------------------------------------------------------------
}
}
if (line.isDoubleWidth()) {
- putCharXY((i * 2) + 1, row, newCell);
- putCharXY((i * 2) + 2, row, ' ', newCell);
+ putDoubleWidthCharXY(line, (i * 2) + 1, row, newCell);
} else {
putCharXY(i + 1, row, newCell);
}
return false;
}
+ /**
+ * Draw glyphs for a double-width or double-height VT100 cell to two
+ * screen cells.
+ *
+ * @param line the line this VT100 cell is in
+ * @param x the X position to draw the left half to
+ * @param y the Y position to draw to
+ * @param cell the cell to draw
+ */
+ private void putDoubleWidthCharXY(final DisplayLine line, final int x,
+ final int y, final Cell cell) {
+
+ int textWidth = 16;
+ int textHeight = 20;
+
+ if (getScreen() instanceof SwingTerminal) {
+ SwingTerminal terminal = (SwingTerminal) getScreen();
+
+ textWidth = terminal.getTextWidth();
+ textHeight = terminal.getTextHeight();
+ } else if (getScreen() instanceof ECMA48Terminal) {
+ ECMA48Terminal terminal = (ECMA48Terminal) getScreen();
+
+ textWidth = terminal.getTextWidth();
+ textHeight = terminal.getTextHeight();
+ } else {
+ // We don't know how to dray glyphs to this screen, draw them as
+ // text and bail out.
+ putCharXY(x, y, cell);
+ putCharXY(x + 1, y, ' ', cell);
+ return;
+ }
+
+ if ((textWidth != lastTextWidth) || (textHeight != lastTextHeight)) {
+ // Screen size has changed, reset all fonts.
+ setupFonts(textHeight);
+ lastTextWidth = textWidth;
+ lastTextHeight = textHeight;
+ }
+ assert (doubleFont != null);
+
+ BufferedImage image = null;
+
+ image = glyphCache.get(cell);
+ if (image == null) {
+ // Generate glyph and draw it to an image.
+ image = new BufferedImage(textWidth * 2, textHeight * 2,
+ BufferedImage.TYPE_INT_ARGB);
+ Graphics2D gr2 = image.createGraphics();
+ gr2.setFont(doubleFont);
+
+ // Draw the background rectangle, then the foreground character.
+ if (getScreen() instanceof ECMA48Terminal) {
+ // BUG: the background color is coming in the same as the
+ // foreground color. For now, don't draw it.
+ } else {
+ gr2.setColor(SwingTerminal.attrToBackgroundColor(cell));
+ gr2.fillRect(0, 0, image.getWidth(), image.getHeight());
+ }
+ gr2.setColor(SwingTerminal.attrToForegroundColor(cell));
+ char [] chars = new char[1];
+ chars[0] = cell.getChar();
+ gr2.drawChars(chars, 0, 1, doubleTextAdjustX,
+ (textHeight * 2) - doubleMaxDescent + doubleTextAdjustY);
+
+ if (cell.isUnderline() && (line.getDoubleHeight() != 1)) {
+ gr2.fillRect(0, textHeight - 2, textWidth, 2);
+ }
+ gr2.dispose();
+
+ // Now save this generated image, using a new key that will not
+ // be mutated by invertCell().
+ Cell key = new Cell();
+ key.setTo(cell);
+ glyphCache.put(key, image);
+ }
+
+ // Now that we have the double-wide glyph drawn, copy the right
+ // pieces of it to the cells.
+ Cell left = new Cell();
+ Cell right = new Cell();
+ left.setTo(cell);
+ right.setTo(cell);
+ right.setChar(' ');
+ BufferedImage leftImage = null;
+ BufferedImage rightImage = null;
+ switch (line.getDoubleHeight()) {
+ case 1:
+ // Top half double height
+ leftImage = image.getSubimage(0, 0, textWidth, textHeight);
+ rightImage = image.getSubimage(textWidth, 0, textWidth, textHeight);
+ break;
+ case 2:
+ // Bottom half double height
+ leftImage = image.getSubimage(0, textHeight, textWidth, textHeight);
+ rightImage = image.getSubimage(textWidth, textHeight,
+ textWidth, textHeight);
+ break;
+ default:
+ // Either single height double-width, or error fallback
+ BufferedImage wideImage = new BufferedImage(textWidth * 2,
+ textHeight, BufferedImage.TYPE_INT_ARGB);
+ Graphics2D grWide = wideImage.createGraphics();
+ grWide.drawImage(image, 0, 0, wideImage.getWidth(),
+ wideImage.getHeight(), null);
+ grWide.dispose();
+ leftImage = wideImage.getSubimage(0, 0, textWidth, textHeight);
+ rightImage = wideImage.getSubimage(textWidth, 0, textWidth,
+ textHeight);
+ break;
+ }
+ left.setImage(leftImage);
+ right.setImage(rightImage);
+ putCharXY(x, y, left);
+ putCharXY(x + 1, y, right);
+ }
+
+ /**
+ * Set up the single and double-width fonts.
+ *
+ * @param fontSize the size of font to request for the single-width font.
+ * The double-width font will be 2x this value.
+ */
+ private void setupFonts(final int fontSize) {
+ try {
+ ClassLoader loader = Thread.currentThread().getContextClassLoader();
+ InputStream in = loader.getResourceAsStream(SwingTerminal.FONTFILE);
+ Font terminusRoot = Font.createFont(Font.TRUETYPE_FONT, in);
+ Font terminusDouble = terminusRoot.deriveFont(Font.PLAIN,
+ fontSize * 2);
+ doubleFont = terminusDouble;
+ } catch (java.awt.FontFormatException e) {
+ new TExceptionDialog(getApplication(), e);
+ doubleFont = new Font(Font.MONOSPACED, Font.PLAIN, fontSize * 2);
+ } catch (java.io.IOException e) {
+ new TExceptionDialog(getApplication(), e);
+ doubleFont = new Font(Font.MONOSPACED, Font.PLAIN, fontSize * 2);
+ }
+
+ // Get font descent.
+ BufferedImage image = new BufferedImage(fontSize * 10, fontSize * 10,
+ BufferedImage.TYPE_INT_ARGB);
+ Graphics2D gr = image.createGraphics();
+ gr.setFont(doubleFont);
+ FontMetrics fm = gr.getFontMetrics();
+ doubleMaxDescent = fm.getMaxDescent();
+
+ gr.dispose();
+
+ // (Re)create the glyph cache.
+ glyphCache = new HashMap<Cell, BufferedImage>();
+ }
+
}
git://git.nikiroo.be / fanfix-jexer.git / commitdiff