* INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
* WARNING: O(n) runtime, unless i == numChildren()
*/
- public void put(int i, Object value, TailCall tail) {
- if (i < 0) return;
+ public Object put(int i, Object value) {
+ if (i < 0) return null;
Trap t = value == null ? (Trap)get("childremoved", Trap.class) : (Trap)get("childadded", Trap.class);
if (value != null && !(value instanceof Box)) {
if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to a non-box");
- return;
+ return null;
}
if (redirect == null) {
- if (t != null) t.perform(value, tail);
+ if (t != null) return t.perform(value);
else if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
} else if (redirect != this) {
Box b = value == null ? (Box)redirect.get(i) : (Box)value;
// FIXME: what if both of them want a tailcall?
- redirect.put(i, value, tail);
- if (t != null) t.perform(value, tail);
+ redirect.put(i, value);
+ if (t != null) return t.perform(value);
} else if (value == null) {
if (i >= 0 && i < numChildren()) {
Box b = getChild(i);
b.remove();
- if (t != null) t.perform(b, tail);
+ if (t != null) return t.perform(b);
}
} else {
Box newnode = (Box)value;
for(Box cur = newnode.parent; cur != null; cur = cur.parent)
if (cur.redirect == newnode) {
if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
- return;
+ return null;
}
// check for recursive ancestor violation
if (cur == newnode) {
if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
- return;
+ return null;
}
if (numKids > 15 && children == null) convert_to_array();
MARK_FOR_REFLOW_this;
newnode.dirty();
- if (t != null) t.perform(b, tail);
+ if (t != null) return t.perform(b);
}
+ return null;
}
public Object get(Object key, Object key2) { return super.get(key, key2); }
* @param rp if this put is being performed via a root proxy, rp is the root proxy.
*/
public void put_(Object name, Object value) { super.put(name, value); }
- public void put(Object name, Object value) { put(name, value, null, false); } // FIXME: correct?
- public void put(Object name, Object value, TailCall tail) { put(name, value, tail, false); }
- public void put(Object name_, Object value, TailCall tail, boolean ignoretraps) {
- if (name_ instanceof Number) { put(((Number)name_).intValue(), value, tail); }
- if (!(name_ instanceof String)) { super.put(name_,value); return; }
+ public Object put(Object name, Object value) { return put(name, value, false); }
+ public Object put(Object name_, Object value, boolean ignoretraps) {
+ if (name_ instanceof Number) { return put(((Number)name_).intValue(), value); }
+ if (!(name_ instanceof String)) { return super.put(name_,value); }
String name = name_.toString();
if (!ignoretraps) {
Trap t = (Trap)get(name, Trap.class);
- if (t != null) { t.perform(value, tail); return; }
+ if (t != null) return t.perform(value);
}
SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
- if (gph != null) { gph.put(name, this, value); return; }
+ if (gph != null) { gph.put(name, this, value); return null; }
- super.put(name, value);
+ return super.put(name, value);
}
--- /dev/null
+// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
+package org.xwt;
+import org.xwt.translators.*;
+import org.xwt.util.*;
+import org.xwt.js.*;
+import java.util.*;
+
+public class Font {
+
+ 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;
+
+ private Font(Res res, int pointsize) {
+ this.res = res;
+ this.pointsize = pointsize;
+ }
+
+ private static Cache fontCache = new Cache();
+ 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;
+ }
+
+ /**
+ * If the glyphs of <code>text</code> are not yet loaded, spawn a
+ * Task to load them and invoke callback.
+ *
+ * returns the width (in the high-order int) and height (in the
+ * low-order int) of the string's rasterization, or -1 if some
+ * glyphs are not loaded.
+ */
+ public long rasterizeGlyphs(final String text, PixelBuffer pb, int textcolor,
+ int x, int y, int cx1, int cy1, int cx2, int cy2,
+ final Scheduler.Task callback) {
+ boolean encounteredUnrenderedGlyph = false;
+ int width = 0;
+ int height = 0;
+ 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.p == null) {
+ glyphsToBeRendered.prepend(g);
+ Scheduler.add(glyphRenderingTask);
+ 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);
+ 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() {
+ 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));
+ used = true;
+ return ((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; }
+ }
+
+ 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 || g.p != null) return;
+ Log.log(Glyph.class, "rendering glyph " + g.c);
+ freetype.renderGlyph(g);
+ Scheduler.add(this);
+ } };
+}
projects / org.ibex.core.git / commitdiff