public class Font {
+ private Font(Res res, int pointsize) { this.res = res; this.pointsize = pointsize; }
+
public final int pointsize;
public final Res res;
public int max_ascent;
public int max_descent;
- public Glyph[] glyphs = new Glyph[65535];
- boolean used = false;
+ boolean latinCharsPreloaded = false; ///< true if a request to preload ASCII 32-127 has begun
+ Glyph[] glyphs = new Glyph[65535];
- private Font(Res res, int pointsize) {
- this.res = res;
- this.pointsize = pointsize;
+ public static class Glyph {
+ public Glyph(char c, Font f) { this.c = c; font = f; }
+ public char c;
+ public int baseline; // within the picture, this is the y-coordinate of the baseline
+ public int advance; // amount to increment the x-coordinate
+ public Picture p;
+ public final Font font;
}
- private static Cache fontCache = new Cache();
+
+ // Statics //////////////////////////////////////////////////////////////////////
+
+ private static final Freetype freetype = new Freetype();
+ private static Cache sizeCache = new Cache(100);
+ static final Queue glyphsToBeRendered = new Queue(255);
+ private static Cache fontCache = new Cache(100);
public static Font getFont(Res res, int pointsize) {
Font ret = (Font)fontCache.get(res, new Integer(pointsize));
if (ret == null) fontCache.put(res, new Integer(pointsize), ret = new Font(res, pointsize));
return ret;
}
+
+ // Methods //////////////////////////////////////////////////////////////////////
+
/**
* If the glyphs of <code>text</code> are not yet loaded, spawn a
* Task to load them and invoke callback.
for(int i=0; i<text.length(); i++) {
final char c = text.charAt(i);
Glyph g = glyphs[c];
- if (g == null) glyphsToBeRendered.prepend(g = new Glyph(c));
+ if (g == null) glyphsToBeRendered.prepend(g = new Glyph(c, this)); // prepend so they are high priority
if (g.p == null) {
glyphsToBeRendered.prepend(g);
encounteredUnrenderedGlyph = true;
} else if (!encounteredUnrenderedGlyph) {
if (pb != null && g.p != null)
- pb.drawPictureAlphaOnly(g.p, x + width, y + g.font.max_ascent - g.baseline,
- cx1, cy1, cx2, cy2, textcolor);
+ pb.drawPictureAlphaOnly(g.p, x + width, y + g.font.max_ascent - g.baseline, cx1, cy1, cx2, cy2, textcolor);
width += g.advance;
height = java.lang.Math.max(height, max_ascent + max_descent);
}
}
- // FIXME: be cleaner here
- if (encounteredUnrenderedGlyph) Scheduler.add(new Scheduler.Task() { public void perform() {
+ if (encounteredUnrenderedGlyph && callback != null) Scheduler.add(new Scheduler.Task() { public void perform() {
for(int i=0; i<text.length(); i++) {
Glyph g = glyphs[text.charAt(i)];
if (g == null || g.p == null) { Scheduler.add(this); return; }
callback.perform();
}});
- if (!used) for(int i=32; i<128; i++) glyphsToBeRendered.append(glyphs[i] = new Glyph((char)i));
- if (!used || encounteredUnrenderedGlyph) { System.out.println("foo!"); Scheduler.add(glyphRenderingTask); }
- used = true;
- return ((long)width << 16) | (long)height;
+ if (!latinCharsPreloaded) for(int i=32; i<128; i++) glyphsToBeRendered.append(glyphs[i] = new Glyph((char)i, this));
+ if (!latinCharsPreloaded || encounteredUnrenderedGlyph) Scheduler.add(glyphRenderingTask);
+ latinCharsPreloaded = true;
+ return encounteredUnrenderedGlyph ? -1 : (((long)width << 16) | (long)height);
}
-
- public class Glyph {
- public char c;
- public int baseline; // within the picture, this is the y-coordinate of the baseline
- public int advance; // amount to increment the x-coordinate
- public Picture p;
- public final Font font;
- public Glyph(char c) { this.c = c; font = Font.this; }
+ public int textwidth(String s) { return (int)(textsize(s) >>> 16L); }
+ public int textheight(String s) { return (int)(textsize(s) & 0xffffffffL); }
+ public long textsize(String s) {
+ Long l = (Long)sizeCache.get(s);
+ if (l != null) return ((Long)l).longValue();
+ long ret = rasterizeGlyphs(s, null, 0, 0, 0, 0, 0, 0, 0, null);
+ if (ret != -1) sizeCache.put(s, new Long(ret));
+ return ret == -1 ? 0 : ret;
}
- private static final Freetype freetype = new Freetype();
- static final Queue glyphsToBeRendered = new Queue(255);
static final Scheduler.Task glyphRenderingTask = new Scheduler.Task() { public void perform() {
Glyph g = (Glyph)glyphsToBeRendered.remove(false);
if (g == null) return;
if (g.p != null) { perform(); return; }
Log.log(Glyph.class, "rendering glyph " + g.c);
- try {
- freetype.renderGlyph(g);
- } catch (IOException e) {
- Log.log(Freetype.class, e);
- }
+ try { freetype.renderGlyph(g); } catch (IOException e) { Log.log(Freetype.class, e); }
Scheduler.add(this);
} };
}