import java.util.ResourceBundle;
import jexer.backend.ECMA48Terminal;
+import jexer.backend.GlyphMaker;
import jexer.backend.MultiScreen;
import jexer.backend.SwingTerminal;
import jexer.bits.Cell;
private boolean closeOnExit = false;
/**
- * System-dependent Y adjustment for text in the character cell
- * (double-height).
+ * Double-height font.
*/
- 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;
+ private GlyphMaker doubleFont;
/**
* Last text width value.
*/
private int lastTextHeight = -1;
- /**
- * A cache of previously-rendered double-width glyphs.
- */
- private Map<Cell, BufferedImage> glyphCache;
-
- /**
- * A cache of previously-rendered double-width glyphs for blinking text,
- * when it is not visible.
- */
- private Map<Cell, BufferedImage> glyphCacheBlink;
-
/**
* The blink state, used only by ECMA48 backend and when double-width
* chars must be drawn.
*/
private boolean blinkState = true;
+ /**
+ * Timer flag, used only by ECMA48 backend and when double-width chars
+ * must be drawn.
+ */
+ private boolean haveTimer = false;
+
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
// ------------------------------------------------------------------------
}
if ((textWidth != lastTextWidth) || (textHeight != lastTextHeight)) {
- // Screen size has changed, reset all fonts.
- setupFonts(textHeight);
+ // Screen size has changed, reset the font.
+ setupFont(textHeight);
lastTextWidth = textWidth;
lastTextHeight = textHeight;
}
assert (doubleFont != null);
- BufferedImage image = null;
- if (cell.isBlink() && !cursorBlinkVisible) {
- image = glyphCacheBlink.get(cell);
+ BufferedImage image;
+ if (line.getDoubleHeight() == 1) {
+ // Double-height top half: don't draw the underline.
+ Cell newCell = new Cell();
+ newCell.setTo(cell);
+ newCell.setUnderline(false);
+ image = doubleFont.getImage(newCell, textWidth * 2, textHeight * 2,
+ cursorBlinkVisible);
} else {
- 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.
- gr2.setColor(SwingTerminal.attrToBackgroundColor(cell));
- gr2.fillRect(0, 0, image.getWidth(), image.getHeight());
- if (!cell.isBlink()
- || (cell.isBlink() && cursorBlinkVisible)
- ) {
- 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);
- if (cell.isBlink() && !cursorBlinkVisible) {
- glyphCacheBlink.put(key, image);
- } else {
- glyphCache.put(key, image);
- }
+ image = doubleFont.getImage(cell, textWidth * 2, textHeight * 2,
+ cursorBlinkVisible);
}
// Now that we have the double-wide glyph drawn, copy the right
right.setChar(' ');
BufferedImage leftImage = null;
BufferedImage rightImage = null;
+ /*
+ System.err.println("image " + image + " textWidth " + textWidth +
+ " textHeight " + textHeight);
+ */
+
switch (line.getDoubleHeight()) {
case 1:
// Top half double height
}
/**
- * Set up the single and double-width fonts.
+ * Set up the double-width font.
*
* @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 caches.
- glyphCache = new HashMap<Cell, BufferedImage>();
- glyphCacheBlink = new HashMap<Cell, BufferedImage>();
+ private void setupFont(final int fontSize) {
+ doubleFont = GlyphMaker.getDefault().size(fontSize * 2);
// Special case: the ECMA48 backend needs to have a timer to drive
// its blink state.
if (getScreen() instanceof jexer.backend.ECMA48Terminal) {
- // Blink every 500 millis.
- long millis = 500;
- getApplication().addTimer(millis, true,
- new TAction() {
- public void DO() {
- blinkState = !blinkState;
- getApplication().doRepaint();
+ if (!haveTimer) {
+ // Blink every 500 millis.
+ long millis = 500;
+ getApplication().addTimer(millis, true,
+ new TAction() {
+ public void DO() {
+ blinkState = !blinkState;
+ getApplication().doRepaint();
+ }
}
- }
- );
+ );
+ haveTimer = true;
+ }
}
-
}
}
--- /dev/null
+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (C) 2019 Kevin Lamonte
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer.backend;
+
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics2D;
+import java.awt.geom.Rectangle2D;
+import java.awt.image.BufferedImage;
+import java.io.InputStream;
+import java.io.IOException;
+import java.util.HashMap;
+
+import jexer.bits.Cell;
+
+/**
+ * GlyphMaker creates glyphs as bitmaps from a font.
+ */
+public class GlyphMaker {
+
+ // ------------------------------------------------------------------------
+ // Constants --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * The mono font resource filename (terminus).
+ */
+ public static final String MONO = "terminus-ttf-4.39/TerminusTTF-Bold-4.39.ttf";
+
+ /**
+ * The CJK font resource filename.
+ */
+ public static final String CJK = "NotoSansMonoCJKhk-Regular.otf";
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * If true, enable debug messages.
+ */
+ private static boolean DEBUG = false;
+
+ /**
+ * The instance that has the mono (default) font.
+ */
+ private static GlyphMaker INSTANCE_MONO;
+
+ /**
+ * The instance that has the CJK font.
+ */
+ private static GlyphMaker INSTANCE_CJK;
+
+ /**
+ * If true, we were successful at getting the font dimensions.
+ */
+ private boolean gotFontDimensions = false;
+
+ /**
+ * The currently selected font.
+ */
+ private Font font = null;
+
+ /**
+ * The currently selected font size in points.
+ */
+ private int fontSize = 16;
+
+ /**
+ * Width of a character cell in pixels.
+ */
+ private int textWidth = 1;
+
+ /**
+ * Height of a character cell in pixels.
+ */
+ private int textHeight = 1;
+
+ /**
+ * Width of a character cell in pixels, as reported by font.
+ */
+ private int fontTextWidth = 1;
+
+ /**
+ * Height of a character cell in pixels, as reported by font.
+ */
+ private int fontTextHeight = 1;
+
+ /**
+ * Descent of a character cell in pixels.
+ */
+ private int maxDescent = 0;
+
+ /**
+ * System-dependent Y adjustment for text in the character cell.
+ */
+ private int textAdjustY = 0;
+
+ /**
+ * System-dependent X adjustment for text in the character cell.
+ */
+ private int textAdjustX = 0;
+
+ /**
+ * System-dependent height adjustment for text in the character cell.
+ */
+ private int textAdjustHeight = 0;
+
+ /**
+ * System-dependent width adjustment for text in the character cell.
+ */
+ private int textAdjustWidth = 0;
+
+ /**
+ * A cache of previously-rendered glyphs for blinking text, when it is
+ * not visible.
+ */
+ private HashMap<Cell, BufferedImage> glyphCacheBlink;
+
+ /**
+ * A cache of previously-rendered glyphs for non-blinking, or
+ * blinking-and-visible, text.
+ */
+ private HashMap<Cell, BufferedImage> glyphCache;
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Private constructor used by the static instance methods.
+ *
+ * @param font the font to use
+ */
+ private GlyphMaker(final Font font) {
+ this.font = font;
+ fontSize = font.getSize();
+ }
+
+ /**
+ * Public constructor.
+ *
+ * @param fontName the name of the font to use
+ * @param fontSize the size of font to use
+ */
+ public GlyphMaker(final String fontName, final int fontSize) {
+ font = new Font(fontName, Font.PLAIN, fontSize);
+ }
+
+ // ------------------------------------------------------------------------
+ // GlyphMaker -------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Obtain the GlyphMaker instance that uses the default monospace font.
+ *
+ * @return the instance
+ */
+ public static GlyphMaker getDefault() {
+
+ synchronized (GlyphMaker.class) {
+ if (INSTANCE_MONO != null) {
+ return INSTANCE_MONO;
+ }
+
+ int fallbackFontSize = 16;
+ Font monoRoot = null;
+ try {
+ ClassLoader loader = Thread.currentThread().getContextClassLoader();
+ InputStream in = loader.getResourceAsStream(MONO);
+ monoRoot = Font.createFont(Font.TRUETYPE_FONT, in);
+ } catch (java.awt.FontFormatException e) {
+ e.printStackTrace();
+ monoRoot = new Font(Font.MONOSPACED, Font.PLAIN,
+ fallbackFontSize);
+ } catch (java.io.IOException e) {
+ e.printStackTrace();
+ monoRoot = new Font(Font.MONOSPACED, Font.PLAIN,
+ fallbackFontSize);
+ }
+ INSTANCE_MONO = new GlyphMaker(monoRoot);
+ return INSTANCE_MONO;
+ }
+ }
+
+ /**
+ * Obtain the GlyphMaker instance that uses the CJK font.
+ *
+ * @return the instance
+ */
+ public static GlyphMaker getCJK() {
+
+ synchronized (GlyphMaker.class) {
+ if (INSTANCE_CJK != null) {
+ return INSTANCE_CJK;
+ }
+
+ int fallbackFontSize = 16;
+ Font cjkRoot = null;
+ try {
+ ClassLoader loader = Thread.currentThread().getContextClassLoader();
+ InputStream in = loader.getResourceAsStream(CJK);
+ cjkRoot = Font.createFont(Font.TRUETYPE_FONT, in);
+ } catch (java.awt.FontFormatException e) {
+ e.printStackTrace();
+ cjkRoot = new Font(Font.MONOSPACED, Font.PLAIN,
+ fallbackFontSize);
+ } catch (java.io.IOException e) {
+ e.printStackTrace();
+ cjkRoot = new Font(Font.MONOSPACED, Font.PLAIN,
+ fallbackFontSize);
+ }
+ INSTANCE_CJK = new GlyphMaker(cjkRoot);
+ return INSTANCE_CJK;
+ }
+ }
+
+ /**
+ * Obtain the GlyphMaker instance that uses the correct font for this
+ * character.
+ *
+ * @param ch the character
+ * @return the instance
+ */
+ public static GlyphMaker getInstance(final int ch) {
+ if (((ch >= 0x4e00) && (ch <= 0x9fff))
+ || ((ch >= 0x3400) && (ch <= 0x4dbf))
+ || ((ch >= 0x20000) && (ch <= 0x2ebef))
+ ) {
+ return getCJK();
+ }
+ return getDefault();
+ }
+
+ /**
+ * Get a derived font at a specific size.
+ *
+ * @param fontSize the size to use
+ * @return a new instance at that font size
+ */
+ public GlyphMaker size(final int fontSize) {
+ GlyphMaker maker = new GlyphMaker(font.deriveFont(Font.PLAIN,
+ fontSize));
+ return maker;
+ }
+
+ /**
+ * Get a glyph image, using the font's idea of cell width and height.
+ *
+ * @param cell the character to draw
+ * @return the glyph as an image
+ */
+ public BufferedImage getImage(final Cell cell) {
+ return getImage(cell, textWidth, textHeight, true);
+ }
+
+ /**
+ * Get a glyph image.
+ *
+ * @param cell the character to draw
+ * @param cellWidth the width of the text cell to draw into
+ * @param cellHeight the height of the text cell to draw into
+ * @return the glyph as an image
+ */
+ public BufferedImage getImage(final Cell cell, final int cellWidth,
+ final int cellHeight) {
+
+ return getImage(cell, cellWidth, cellHeight, true);
+ }
+
+ /**
+ * Get a glyph image.
+ *
+ * @param cell the character to draw
+ * @param cellWidth the width of the text cell to draw into
+ * @param cellHeight the height of the text cell to draw into
+ * @param blinkVisible if true, the cell is visible if it is blinking
+ * @return the glyph as an image
+ */
+ public BufferedImage getImage(final Cell cell, final int cellWidth,
+ final int cellHeight, final boolean blinkVisible) {
+
+ if (gotFontDimensions == false) {
+ // Lazy-load the text width/height and adjustments.
+ getFontDimensions();
+ }
+
+ BufferedImage image = null;
+ if (cell.isBlink() && !blinkVisible) {
+ image = glyphCacheBlink.get(cell);
+ } else {
+ image = glyphCache.get(cell);
+ }
+ if (image != null) {
+ return image;
+ }
+
+ // Generate glyph and draw it.
+ image = new BufferedImage(cellWidth, cellHeight,
+ BufferedImage.TYPE_INT_ARGB);
+ Graphics2D gr2 = image.createGraphics();
+ gr2.setFont(font);
+
+ Cell cellColor = new Cell();
+ cellColor.setTo(cell);
+
+ // Check for reverse
+ if (cell.isReverse()) {
+ cellColor.setForeColor(cell.getBackColor());
+ cellColor.setBackColor(cell.getForeColor());
+ }
+
+ // Draw the background rectangle, then the foreground character.
+ gr2.setColor(SwingTerminal.attrToBackgroundColor(cellColor));
+ gr2.fillRect(0, 0, cellWidth, cellHeight);
+
+ // Handle blink and underline
+ if (!cell.isBlink()
+ || (cell.isBlink() && blinkVisible)
+ ) {
+ gr2.setColor(SwingTerminal.attrToForegroundColor(cellColor));
+ char [] chars = new char[1];
+ chars[0] = cell.getChar();
+ gr2.drawChars(chars, 0, 1, textAdjustX,
+ cellHeight - maxDescent + textAdjustY);
+
+ if (cell.isUnderline()) {
+ gr2.fillRect(0, cellHeight - 2, cellWidth, 2);
+ }
+ }
+ gr2.dispose();
+
+ // We need a new key that will not be mutated by invertCell().
+ Cell key = new Cell();
+ key.setTo(cell);
+ if (cell.isBlink() && !blinkVisible) {
+ glyphCacheBlink.put(key, image);
+ } else {
+ glyphCache.put(key, image);
+ }
+
+ return image;
+ }
+
+ /**
+ * Figure out my font dimensions.
+ */
+ private void getFontDimensions() {
+ glyphCacheBlink = new HashMap<Cell, BufferedImage>();
+ glyphCache = new HashMap<Cell, BufferedImage>();
+
+ BufferedImage image = new BufferedImage(fontSize * 2, fontSize * 2,
+ BufferedImage.TYPE_INT_ARGB);
+ Graphics2D gr = image.createGraphics();
+ gr.setFont(font);
+ FontMetrics fm = gr.getFontMetrics();
+ maxDescent = fm.getMaxDescent();
+ Rectangle2D bounds = fm.getMaxCharBounds(gr);
+ int leading = fm.getLeading();
+ fontTextWidth = (int)Math.round(bounds.getWidth());
+ // fontTextHeight = (int)Math.round(bounds.getHeight()) - maxDescent;
+
+ // This produces the same number, but works better for ugly
+ // monospace.
+ fontTextHeight = fm.getMaxAscent() + maxDescent - leading;
+ gr.dispose();
+
+ textHeight = fontTextHeight + textAdjustHeight;
+ textWidth = fontTextWidth + textAdjustWidth;
+
+ gotFontDimensions = true;
+ }
+
+}
git://git.nikiroo.be / fanfix-swing.git / commitdiff