1 // Copyright 2000-2005 the Contributors, as shown in the revision logs.
2 // Licensed under the GNU General Public License version 2 ("the License").
3 // You may not use this file except in compliance with the License.
7 // FIXME: are traps on x/y meaningful?
8 // FIXME: trap on visible, trigger when parent visibility changes
9 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
10 // FEATURE: reintroduce surface.abort
15 // - clipping (all forms)
24 import org.ibex.util.*;
25 import org.ibex.plat.*;
26 import org.ibex.graphics.*;
30 * Encapsulates the data for a single Ibex box as well as all layout
34 * <p>The rendering process consists of four phases; each requires
35 * one DFS pass over the tree</p>
36 * <ol><li> <b>pack()</b>: each box sets its childrens' row/col
37 * <ol><li> <b>constrain()</b>: contentwidth is computed
38 * <li> <b>resize()</b>: width/height and x/y positions are set
39 * <li> <b>render()</b>: children draw their content onto the PixelBuffer.
42 * The first three passes together are called the <i>reflow</i>
43 * phase. Reflowing is done in a seperate pass since SizeChanges
44 * trigger a Surface.abort; if rendering were done in the same pass,
45 * rendering work done prior to the Surface.abort would be wasted.
47 public final class Box extends JS.Obj implements Callable, Mesh.Chain {
49 public Mesh.Chain getMeshChainParent() { return parent; }
50 public Mesh getMesh() { return mesh; }
51 public Affine getAffine() { return transform; }
53 // Macros //////////////////////////////////////////////////////////////////////
55 final void REPLACE() { for(Box b2 = this; b2 != null && !b2.test(REPLACE); b2 = b2.parent) b2.set(REPLACE); }
56 final void RECONSTRAIN() { for(Box b2 = this; b2 != null && !b2.test(RECONSTRAIN); b2 = b2.parent) b2.set(RECONSTRAIN); }
58 //#define CHECKSET_SHORT(prop) short nu = (short)JSU.toInt(value); if (nu == prop) break; prop = nu;
59 //#define CHECKSET_INT(prop) int nu = JSU.toInt(value); if (nu == prop) break; prop = nu;
60 //#define CHECKSET_FLAG(flag) boolean nu=JSU.toBoolean(value);if(nu == test(flag)) break; if (nu) set(flag); else clear(flag);
61 //#define CHECKSET_BOOLEAN.N(prop) boolean nu = JSU.toBoolean(value); if (nu == prop) break; prop = nu;
62 //#define CHECKSET_STRING(prop) if((value==null&&prop==null)||(value!=null&&JSU.toString(value).equals(prop)))break;prop=JSU.toString(value);
64 // Instance Data //////////////////////////////////////////////////////////////////////
66 private Box parent = null;
67 private Box redirect = this;
68 private int flags = VISIBLE | RECONSTRAIN | REPLACE | STOP_UPWARD_PROPAGATION | CLIP | MOVED;
69 private BalancedTree bt = null;
70 private String text = null;
71 private Font font = DEFAULT_FONT;
72 private Picture texture = null;
73 public int fillcolor = 0x00000000;
74 private int strokecolor = 0xFF000000;
75 public float flex = 1;
76 private Path path = null;
77 private Path clippath = null;
78 private Affine transform = Affine.identity();
80 // FEATURE: polygon caching
81 private Mesh polygon = null;
82 private Mesh mesh = null;
84 // specified directly by user
85 public int minwidth = 0;
86 public int maxwidth = Integer.MAX_VALUE;
87 public int minheight = 0;
88 public int maxheight = Integer.MAX_VALUE;
90 // computed during reflow
91 //public int width = 0; // AS MEASURED IN PARENT SPACE!
92 //public int height = 0; // AS MEASURED IN PARENT SPACE!
97 private int rootwidth;
98 private int rootheight;
99 public int getRootWidth() { return rootwidth; }
100 public int getRootHeight() { return rootheight; }
102 public int contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
103 public int contentheight = 0;
106 // Instance Methods /////////////////////////////////////////////////////////////////////
108 /** invoked when a resource needed to render ourselves finishes loading */
109 public Object run(Object o) throws JSExn {
110 if (texture == null) { Log.warn(Box.class, "perform() called with null texture"); return null; }
111 if (texture.isLoaded) {
112 setWidth(max(texture.width, minwidth), maxwidth);
113 setHeight(max(texture.height, minheight), maxheight);
115 else { JS res = texture.stream; texture = null; throw new JSExn("image not found: "+res.unclone()); }
119 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
120 public void dirty() { if (path==null) dirty(0, 0, contentwidth, contentheight); else dirty(path); }
121 public void dirty(int x, int y, int w, int h) { }
122 public void dirty(Path p) {
123 Affine a = transform.copy();
124 for(Box cur = this; cur != null; cur = cur.parent) a.premultiply(cur.transform);
125 long hbounds = p.horizontalBounds(a);
126 long vbounds = p.verticalBounds(a);
127 int x1 = (int)Encode.longToFloat2(hbounds);
128 int x2 = (int)Encode.longToFloat1(hbounds);
129 int y1 = (int)Encode.longToFloat2(vbounds);
130 int y2 = (int)Encode.longToFloat1(vbounds);
131 if (getSurface() != null) getSurface().dirty(x1, y1, x2-x1, y2-y1);
135 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
137 /** should only be invoked on the root box */
138 public void reflow() {
139 constrain(this, Affine.identity(), new BoundingBox());
140 width = rootwidth = maxwidth;
141 height = rootheight = maxheight;
144 place(0, 0, width, height, false);
147 public float minWidth() { return Encode.longToFloat1(transform.rotateBox(minwidth, minheight)); }
148 public float minHeight() { return Encode.longToFloat2(transform.rotateBox(minwidth, minheight)); }
149 public float maxWidth() { return Encode.longToFloat1(transform.rotateBox(maxwidth, maxheight)); }
150 public float maxHeight() { return Encode.longToFloat2(transform.rotateBox(maxwidth, maxheight)); }
151 public float contentWidth() { return Encode.longToFloat1(transform.rotateBox(contentwidth, contentheight)); }
152 public float contentHeight() { return Encode.longToFloat2(transform.rotateBox(contentwidth, contentheight)); }
154 /** used (single-threadedly) in constrain() */
155 private static int xmin = 0, ymin = 0, xmax = 0, ymax = 0;
157 private static class BoundingBox {
158 public int xmin, ymin, xmax, ymax;
159 public boolean unbounded() {
160 return xmin==Integer.MAX_VALUE||xmax==Integer.MIN_VALUE||ymin==Integer.MAX_VALUE||ymax==Integer.MIN_VALUE; }
161 public void reset() {
162 xmin = Integer.MAX_VALUE; ymin = Integer.MAX_VALUE;
163 xmax = Integer.MIN_VALUE; ymax = Integer.MIN_VALUE;
165 public void include(Affine a, float cw, float ch) {
166 //#repeat contentwidth/contentheight contentheight/contentwidth minwidth/minheight row/col col/row \
167 // textwidth/textheight maxwidth/maxheight bounds/boundsy x1/y1 x2/y2 z1/q1 z2/q2 z3/q3 z4/q4 \
168 // horizontalBounds/verticalBounds e/f multiply_px/multiply_py xmin/ymin xmax/ymax
169 float z1 = a.multiply_px(0, 0);
170 float z2 = a.multiply_px(cw, ch);
171 float z3 = a.multiply_px(cw, 0);
172 float z4 = a.multiply_px(0, ch);
173 xmin = min(xmin, (int)min(min(z1, z2), min(z3, z4)));
174 xmax = max(xmax, (int)max(max(z1, z2), max(z3, z4)));
177 public void include(Affine a, Path path) {
178 //#repeat contentwidth/contentheight contentheight/contentwidth minwidth/minheight row/col col/row \
179 // textwidth/textheight maxwidth/maxheight bounds/boundsy x1/y1 x2/y2 z1/q1 z2/q2 z3/q3 z4/q4 \
180 // horizontalBounds/verticalBounds e/f multiply_px/multiply_py xmin/ymin xmax/ymax
181 long bounds = path.horizontalBounds(a);
182 float z1 = Encode.longToFloat2(bounds);
183 float z2 = Encode.longToFloat1(bounds);
184 float z3 = Encode.longToFloat2(bounds);
185 float z4 = Encode.longToFloat1(bounds);
186 xmin = min(xmin, (int)min(min(z1, z2), min(z3, z4)));
187 xmax = max(xmax, (int)max(max(z1, z2), max(z3, z4)));
192 /** expand the {x,y}{min,max} boundingbox in space <tt>a</tt> to include this box */
193 public void constrain(Box b, Affine a, BoundingBox bbox) {
196 a = a.copy().premultiply(transform);
198 BoundingBox bbox2 = new BoundingBox();
199 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
200 child.constrain(this, Affine.identity(), bbox2);
201 if (bbox2.unbounded()) { /* FIXME: why? */ bbox2.reset(); continue; }
203 // packed boxes mush together their childrens' bounding boxes
205 contentwidth = contentwidth + (bbox2.xmax-bbox2.xmin);
206 contentheight = max(bbox2.ymax-bbox2.ymin, contentheight);
208 contentwidth = max(bbox2.xmax-bbox2.xmin, contentwidth);
209 contentheight = contentheight + (bbox2.ymax-bbox2.ymin);
215 // unpacked boxes simply use the "cumulative" bounding box
216 contentwidth = bbox2.xmax-bbox2.xmin;
217 contentheight = bbox2.ymax-bbox2.ymin;
220 contentwidth = bound(minwidth, contentwidth, maxwidth);
221 contentheight = bound(minheight, contentheight, maxheight);
222 bbox.include(a, contentwidth, contentheight);
223 if (path!=null) bbox.include(a, path);
226 void place(float x, float y, float w, float h, boolean keep) {
229 width = bound(contentwidth, (int)Encode.longToFloat1(transform.inverse().rotateBox(w, h)), test(HSHRINK)?contentwidth:maxwidth);
230 height = bound(contentheight, (int)Encode.longToFloat2(transform.inverse().rotateBox(w, h)), test(VSHRINK)?contentheight:maxheight);
231 if (oldw!=width || oldh!=height) mesh = null;
233 Affine a = transform;
238 //#repeat e/f x/y multiply_px/multiply_py horizontalBounds/verticalBounds bounds/boundsy z1/z1y z2/z2y z3/z3y z4/z4y
239 long bounds = path==null ? 0 : path.horizontalBounds(transform);
240 float z1 = path==null ? a.multiply_px(0, 0) : Encode.longToFloat2(bounds);
241 float z2 = path==null ? a.multiply_px(width, height) : Encode.longToFloat1(bounds);
242 float z3 = path==null ? a.multiply_px(width, 0) : Encode.longToFloat2(bounds);
243 float z4 = path==null ? a.multiply_px(0, height) : Encode.longToFloat1(bounds);
244 e = (-1 * min(min(z1, z2), min(z3, z4))) + x;
251 for(Box child = getChild(0); child != null; child = child.nextSibling())
252 child.place(0, 0, width, height, true);
255 float slack = test(XAXIS)?width:height, oldslack = 0, flex = 0, newflex = 0;
256 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
257 if (!child.test(VISIBLE)) continue;
259 child._width = child.contentWidth();
260 child._height = height;
261 slack -= child._width;
263 child._height = child.contentHeight();
264 child._width = width;
265 slack -= child._height;
269 while(slack > 0 && flex > 0 && oldslack!=slack) {
271 slack = test(XAXIS) ? width : height;
273 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
274 if (!child.test(VISIBLE)) continue;
276 float oldwidth = child._width;
277 if (child.test(HSHRINK)) child._width = min(child.maxWidth(), child._width+(oldslack*child.flex)/flex);
278 slack -= child._width;
279 if (child._width > oldwidth) newflex += child.flex;
281 float oldheight = child._height;
282 if (child.test(VSHRINK)) child._height = min(child.maxHeight(), child._height+(oldslack*child.flex)/flex);
283 slack -= child._height;
284 if (child._height > oldheight) newflex += child.flex;
289 float pos = slack / 2;
290 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
291 if (!child.test(VISIBLE)) continue;
293 child.place(pos, 0, child._width, child._height, false);
296 child.place(0, pos, child._width, child._height, false);
297 pos += child._height;
306 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
308 private static final boolean OPTIMIZE = false;
310 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
311 public void render(PixelBuffer buf, Affine a, Mesh clipFrom) { render(buf, a, clipFrom, Affine.identity(), 0); }
312 public void render(PixelBuffer buf, Affine a, Mesh clipFrom, Affine clipa, int bg) {
313 if (!test(VISIBLE)) return;
314 a = a.copy().multiply(transform);
315 clipa = clipa.copy().multiply(transform);
318 if (path != null) mesh = new Mesh(path, true);
320 if (((fillcolor & 0xFF000000) != 0x00000000 || parent == null) && (text==null||"".equals(text))) {
321 mesh = new Mesh().addRect(0, 0, width, height);
323 // if (ret == 0) Platform.Scheduler.add(this);
327 for(Box b = getChild(0); b != null; b = b.nextSibling()) b.render(buf, a, clipFrom, clipa, bg);
328 if (!(text==null||text.equals("")))
329 font.rasterizeGlyphs(text, buf, a.copy(), clipFrom, clipa.copy(), strokecolor, 0);
333 if (clipFrom != null) clipFrom.subtract(mesh, clipa);
334 Mesh mesh = treeSize() > 0 ? this.mesh.copy() : this.mesh;
336 if ((fillcolor & 0xff000000)!=0) bg = fillcolor;
337 for(Box b = getChild(0); b != null; b = b.nextSibling()) b.render(buf, a, mesh, Affine.identity(), bg);
339 mesh.fill(buf, a, null, fillcolor, true);
340 if ((strokecolor & 0xff000000) != 0) mesh.stroke(buf, a, strokecolor);
341 if (!(text==null||text.equals("")))
342 font.rasterizeGlyphs(text, buf, a.copy(), clipFrom, clipa.copy(), strokecolor, bg);
345 // Methods to implement org.ibex.js.JS //////////////////////////////////////
347 public JS call(JS method, JS[] args) throws JSExn {
348 switch (args.length) {
350 //#switch(JSU.toString(method))
352 Box b = (Box)args[0];
353 if (b.parent != this)
354 return (redirect == null || redirect == this) ? JSU.N(-1) : redirect.call(method, args);
355 return JSU.N(b.getIndexInParent());
358 Box b = (Box)args[0];
359 JS ret = new JS.Obj();
360 ret.put(JSU.S("x"), JSU.N(b.localToGlobalX(0) - localToGlobalX(0)));
361 ret.put(JSU.S("y"), JSU.N(b.localToGlobalY(0) - localToGlobalY(0)));
367 return super.call(method, args);
370 public JS get(JS name) throws JSExn {
372 return redirect == null ? null : redirect == this ? getChild(JSU.toInt(name)) : redirect.get(name);
374 //#switch(JSU.toString(name))
375 case "surface": return parent == null ? null : parent.getAndTriggerTraps(name);
376 case "indexof": return METHOD;
377 case "distanceto": return METHOD;
378 case "text": return JSU.S(text);
380 if (path != null) return JSU.S(path.toString());
381 if (text == null) return null;
382 if (font == null) return null;
384 for(int i=0; i<text.length(); i++) ret += font.glyphs[text.charAt(i)].path;
387 case "fill": return JSU.S(Color.colorToString(fillcolor));
388 case "strokecolor": return JSU.S(Color.colorToString(strokecolor));
389 case "textcolor": return JSU.S(Color.colorToString(strokecolor));
390 case "font": return font == null ? null : font.stream;
391 case "fontsize": return font == null ? JSU.N(10) : JSU.N(font.pointsize);
392 case "thisbox": return this;
393 case "shrink": return JSU.B(test(HSHRINK) || test(VSHRINK));
394 case "hshrink": return JSU.B(test(HSHRINK));
395 case "vshrink": return JSU.B(test(VSHRINK));
396 case "flex": return JSU.N(flex);
397 case "width": getRoot().reflow(); return JSU.N(width);
398 case "height": getRoot().reflow(); return JSU.N(height);
399 case "minwidth": return JSU.N(minwidth);
400 case "maxwidth": return JSU.N(maxwidth);
401 case "minheight": return JSU.N(minheight);
402 case "maxheight": return JSU.N(maxheight);
403 case "clip": return JSU.B(test(CLIP));
404 case "visible": return JSU.B(test(VISIBLE) && (parent == null || (parent.get(JSU.S("visible")) == JSU.T)));
405 case "axis": return test(XAXIS) ? JSU.S("x") : test(YAXIS) ? JSU.S("y") : JSU.S("z");
406 case "globalx": return JSU.N(localToGlobalX(0));
407 case "globaly": return JSU.N(localToGlobalY(0));
408 case "cursor": return test(CURSOR) ? JSU.S((String)boxToCursor.get(this)) : null;
410 if (getSurface() == null) return null;
411 if (getSurface()._mousex == Integer.MAX_VALUE)
412 throw new JSExn("you cannot read from the box.mouse property in background thread context");
414 case "numchildren": return redirect == null ? JSU.N(0) : redirect == this ? JSU.N(treeSize()) : redirect.get(JSU.S("numchildren"));
415 case "redirect": return redirect == null ? null : redirect == this ? JSU.T : redirect.get(JSU.S("redirect"));
416 case "Minimized": if (parent == null && getSurface() != null) return JSU.B(getSurface().minimized);
417 default: return super.get(name);
419 throw new Error("unreachable"); // unreachable
422 private class Mouse extends JS.Immutable implements JS.Cloneable {
423 public JS get(JS key) throws JSExn {
424 //#switch(JSU.toString(key))
425 case "x": return JSU.N(globalToLocalX(getSurface()._mousex));
426 case "y": return JSU.N(globalToLocalY(getSurface()._mousey));
428 // this might not get recomputed if we change mousex/mousey...
429 case "inside": return JSU.B(test(MOUSEINSIDE));
431 return super.get(key);
435 //#repeat setWidth/setHeight minwidth/minheight maxwidth/maxheight pendingWidth/pendingHeight
436 public void setWidth(int min, int max) {
437 // FIXME: deal with conflicting min/max
438 if (this.minwidth == min && this.maxwidth == max) return;
442 if (parent != null || getSurface() == null) return;
443 getSurface().pendingWidth = maxwidth;
445 // FIXME: the repeat doesn't work right here
446 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
450 public void put(JS name, JS value) throws JSExn {
451 if (JSU.isInt(name)) { put(JSU.toInt(name), value); return; }
452 //#switch(JSU.toString(name))
453 case "thisbox": if (value == null) removeSelf();
455 String s = value==null ? "" : JSU.toString(value);
457 minwidth = maxwidth = font.textwidth(text);
458 minheight = maxheight = font.textheight(text);
462 case "strokecolor": value = JSU.N(Color.stringToColor(JSU.toString(value))); CHECKSET_INT(strokecolor); dirty();
463 case "textcolor": value = JSU.N(Color.stringToColor(JSU.toString(value))); CHECKSET_INT(strokecolor); dirty();
464 case "shrink": CHECKSET_FLAG(HSHRINK | VSHRINK); RECONSTRAIN();
465 case "hshrink": CHECKSET_FLAG(HSHRINK); RECONSTRAIN();
466 case "vshrink": CHECKSET_FLAG(VSHRINK); RECONSTRAIN();
469 path = new Path(JSU.toString(value));
470 float tx = -1 * Encode.longToFloat2(path.horizontalBounds(Affine.identity()));
471 float ty = -1 * Encode.longToFloat2(path.verticalBounds(Affine.identity()));
472 path.transform(Affine.translate(tx, ty), true);
479 clippath = new Path(JSU.toString(value));
480 //float tx = -1 * Encode.longToFloat2(clippath.horizontalBounds(Affine.identity()));
481 //float ty = -1 * Encode.longToFloat2(clippath.verticalBounds(Affine.identity()));
482 //clippath.transform(Affine.translate(tx, ty), true);
488 case "x": transform.e = JSU.toInt(value);
489 case "y": transform.f = JSU.toInt(value);
491 transform = Affine.parse(JSU.toString(value));
492 if (getSurface() != null) // FIXME
493 getSurface().dirty(0, 0, getSurface().root.contentwidth, getSurface().root.contentheight);
499 case "width": setWidth(JSU.toInt(value), JSU.toInt(value));
500 case "height": setHeight(JSU.toInt(value), JSU.toInt(value));
501 case "flex": flex = JSU.toFloat(value);
502 case "maxwidth": setWidth(minwidth, JSU.toInt(value));
503 case "minwidth": setWidth(JSU.toInt(value), maxwidth);
504 case "maxheight": setHeight(minheight, JSU.toInt(value));
505 case "minheight": setHeight(JSU.toInt(value), maxheight);
506 case "visible": CHECKSET_FLAG(VISIBLE); RECONSTRAIN(); dirty();
507 case "cursor": setCursor(JSU.toString(value));
508 case "fill": setFill(value);
509 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
511 int mousex = JSU.toInt(((JS)value).get(JSU.S("x")));
512 int mousey = JSU.toInt(((JS)value).get(JSU.S("y")));
513 getSurface()._mousex = (int)localToGlobalX(mousex);
514 getSurface()._mousey = (int)localToGlobalY(mousey);
516 String s = JSU.toString(value);
517 if (s.equals("x")) { clear(YAXIS); set(XAXIS); }
518 else if (s.equals("y")) { clear(XAXIS); set(YAXIS); }
519 else if (s.equals("z")) { clear(XAXIS); clear(YAXIS); }
520 else JSU.warn("attempted to set axis property to invalid value: " + s);
522 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = JSU.toBoolean(value); // FEATURE
523 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = JSU.toBoolean(value); // FEATURE
524 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
526 for(Box cur = (Box)value; cur != null || cur == redirect; cur = cur.parent)
527 if (cur == redirect) { redirect = (Box)value; return; }
528 JSU.error("redirect can only be set to a descendant of its current value");
529 case "fontsize": font = Font.getFont(font == null ? null : font.stream, JSU.toInt(value)); RECONSTRAIN(); dirty();
531 if(!(value instanceof Fountain)) throw new JSExn("You can only put streams to the font property");
532 //FIXME: if (font == value) return; // FIXME: unclone()
533 font = value == null ? null : Font.getFont((Fountain)value, font == null ? 10 : font.pointsize);
536 case "titlebar": if (getSurface()!=null) getSurface().setTitleBarText(JSU.toString(value)); super.put(name,value);
539 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
540 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
541 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
542 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
543 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
544 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
545 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
546 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
547 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
548 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
549 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
550 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
551 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
552 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
553 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
554 case "HScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
555 parent.putAndTriggerTraps(name, JSU.N(JSU.toFloat(value) * ((float)parent.fontSize()) / ((float)fontSize())));
556 case "VScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
557 parent.putAndTriggerTraps(name, JSU.N(JSU.toFloat(value) * ((float)parent.fontSize()) / ((float)fontSize())));
559 case "_Move": propagateDownward(name, value, false);
560 case "_Press1": propagateDownward(name, value, false);
561 case "_Press2": propagateDownward(name, value, false);
562 case "_Press3": propagateDownward(name, value, false);
563 case "_Release1": propagateDownward(name, value, false);
564 case "_Release2": propagateDownward(name, value, false);
565 case "_Release3": propagateDownward(name, value, false);
566 case "_Click1": propagateDownward(name, value, false);
567 case "_Click2": propagateDownward(name, value, false);
568 case "_Click3": propagateDownward(name, value, false);
569 case "_DoubleClick1": propagateDownward(name, value, false);
570 case "_DoubleClick2": propagateDownward(name, value, false);
571 case "_DoubleClick3": propagateDownward(name, value, false);
572 case "_KeyPressed": propagateDownward(name, value, false);
573 case "_KeyReleased": propagateDownward(name, value, false);
574 case "_HScroll": propagateDownward(name, value, false);
575 case "_VScroll": propagateDownward(name, value, false);
577 case "SizeChange": return;
578 case "ChildChange": return;
579 case "Enter": return;
580 case "Leave": return;
582 default: super.put(name, value);
586 private void setCursor(String value) throws JSExn {
587 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
588 if (value.equals(boxToCursor.get(this))) return;
590 boxToCursor.put(this, value);
591 Surface surface = getSurface();
592 if (surface == null) return;
593 String tempcursor = surface.cursor;
594 propagateDownward(null, null, false);
595 if (surface.cursor != tempcursor) surface.syncCursor();
598 private void setFill(JS value) throws JSExn {
600 if (texture == null && fillcolor == 0) return;
603 } else if (JSU.isString(value)) {
604 int newfillcolor = Color.stringToColor(JSU.toString(value));
605 if (newfillcolor == fillcolor) return;
606 fillcolor = newfillcolor;
609 Picture newtex = Picture.load((JS)value, this);
610 if (texture == newtex) return;
613 if (texture != null && texture.isLoaded) run(null);
619 * Handles events which propagate down the box tree. If obscured
620 * is set, then we merely check for Enter/Leave.
622 private void propagateDownward(JS name_, JS value, boolean obscured) throws JSExn {
624 String name = JSU.toString(name_);
625 if (getSurface() == null) return;
626 int x = (int)globalToLocalX(getSurface()._mousex);
627 int y = (int)globalToLocalY(getSurface()._mousey);
628 boolean wasinside = test(MOUSEINSIDE);
629 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
630 if (!wasinside && isinside) {
632 putAndTriggerTrapsAndCatchExceptions(JSU.S("Enter"), JSU.T);
634 if (isinside && test(CURSOR)) getSurface().cursor = (String)boxToCursor.get(this);
635 if (wasinside && !isinside) {
637 putAndTriggerTrapsAndCatchExceptions(JSU.S("Leave"), JSU.T);
640 boolean found = false;
641 if (wasinside || isinside)
642 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
643 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
645 if (name.equals("_HScroll") || name.equals("_VScroll"))
646 value2 = JSU.N(JSU.toFloat(value) * ((float)child.fontSize()) / (float)fontSize());
647 if (obscured /*|| !child.inside(x - child.x, y - child.y) FIXME FIXME */) {
648 child.propagateDownward(name_, value2, true);
651 child.clear(STOP_UPWARD_PROPAGATION);
652 if (name != null) child.putAndTriggerTrapsAndCatchExceptions(name_, value2);
653 else child.propagateDownward(name_, value2, obscured);
655 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
658 if (child.inside(x - child.x, y - child.y))
659 if (name != null && name.equals("_Move")) obscured = true;
664 if (!obscured && !found)
665 if ("_Move".equals(name) || name.startsWith("_Release") || wasinside)
667 putAndTriggerTrapsAndCatchExceptions(JSU.S(name.substring(1)), value);
670 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
671 public static Box whoIs(Box cur, int x, int y) {
673 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
677 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
678 // ANY part of Ibex, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
680 if (!cur.test(VISIBLE)) return null;
681 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
683 for(int i=cur.treeSize() - 1; i>=0; i--) {
684 Box child = cur.getChild(i);
685 if (child == null) continue; // since this method is unsynchronized, we have to double-check
686 globalx += child.transform.e;
687 globaly += child.transform.f;
688 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
689 globalx -= child.transform.e;
690 globaly -= child.transform.f;
698 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
700 public final int fontSize() { return font == null ? DEFAULT_FONT.pointsize : font.pointsize; }
701 public Enumeration jskeys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
702 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
703 public Surface getSurface() { return Surface.fromBox(getRoot()); }
704 private final boolean packed() { return test(YAXIS) || test(XAXIS); }
705 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.packed() && b.test(VISIBLE))?b:b.nextPackedSibling(); }
706 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.packed() && b.test(VISIBLE))?b:b.nextPackedSibling(); }
707 public float globalToLocalX(float x) { return parent == null ? x : parent.globalToLocalX(x - transform.e); }
708 public float globalToLocalY(float y) { return parent == null ? y : parent.globalToLocalY(y - transform.f); }
709 public float localToGlobalX(float x) { return parent == null ? x : parent.globalToLocalX(x + transform.e); }
710 public float localToGlobalY(float y) { return parent == null ? y : parent.globalToLocalY(y + transform.f); }
712 static short min(short a, short b) { if (a<b) return a; else return b; }
713 static int min(int a, int b) { if (a<b) return a; else return b; }
714 static float min(float a, float b) { if (a<b) return a; else return b; }
716 static short max(short a, short b) { if (a>b) return a; else return b; }
717 static int max(int a, int b) { if (a>b) return a; else return b; }
718 static float max(float a, float b) { if (a>b) return a; else return b; }
720 static int min(int a, int b, int c) { if (a<=b && a<=c) return a; else if (b<=c && b<=a) return b; else return c; }
721 static int max(int a, int b, int c) { if (a>=b && a>=c) return a; else if (b>=c && b>=a) return b; else return c; }
722 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
723 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
725 void set(int mask) { flags |= mask; }
726 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
727 void clear(int mask) { flags &= ~mask; }
728 public boolean test(int mask) { return ((flags & mask) == mask); }
731 // Tree Handling //////////////////////////////////////////////////////////////////////
733 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
734 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
735 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
736 public final Box getChild(int i) {
737 if (i < 0) return null;
738 if (i >= treeSize()) return null;
739 return (Box)getNode(i);
742 // Tree Manipulation /////////////////////////////////////////////////////////////////////
744 public void removeSelf() {
745 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
746 Surface surface = Surface.fromBox(this);
747 if (surface != null) surface.dispose(true);
750 /** remove the i^th child */
751 public void removeChild(int i) {
755 b.clear(MOUSEINSIDE);
759 putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
762 public void put(int i, JS value) throws JSExn {
765 if (value != null && !(value instanceof Box)) {
766 if (Log.on) JSU.warn("attempt to set a numerical property on a box to a non-box");
770 if (redirect == null) {
771 if (value == null) putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), getChild(i));
772 else JSU.warn("attempt to add/remove children to/from a node with a null redirect");
774 } else if (redirect != this) {
775 if (value != null) putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), value);
776 redirect.put(i, value);
778 Box b = (Box)redirect.get(JSU.N(i));
779 if (b != null) putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
782 } else if (value == null) {
783 if (i < 0 || i > treeSize()) return;
786 putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
791 // check if box being moved is currently target of a redirect
792 for(Box cur = b.parent; cur != null; cur = cur.parent)
793 if (cur.redirect == b) {
794 if (Log.on) JSU.warn("attempt to move a box that is the target of a redirect");
798 // check for recursive ancestor violation
799 for(Box cur = this; cur != null; cur = cur.parent)
801 if (Log.on) JSU.warn("attempt to make a node a parent of its own ancestor");
802 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
806 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
810 // need both of these in case child was already uncalc'ed
815 putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
819 public void putAndTriggerTrapsAndCatchExceptions(JS name, JS val) {
821 putAndTriggerTraps(name, val);
823 JSU.log("caught js exception while putting to trap \""+ JSU.str(name)+"\"");
825 } catch (Exception e) {
826 JSU.log("caught exception while putting to trap \""+ JSU.str(name)+"\"");
831 // BalancedTree functions
832 private void insertNode(int p, Box b) { if(bt == null) bt = new BalancedTree(); bt.insertNode(p,b); }
833 private int treeSize() { return bt == null ? 0 : bt.treeSize(); }
834 private int indexNode(Box b) { return bt == null ? -1 : bt.indexNode(b); }
835 private void deleteNode(int p) { bt.deleteNode(p); }
836 private Box getNode(int p) { return (Box)bt.getNode(p); }
839 final static JS.Method METHOD = new JS.Method();
840 final static Basket.Map boxToCursor = new Basket.Hash(500, 3);
841 final static JS SIZECHANGE = JSU.S("SizeChange");
842 final static Font DEFAULT_FONT = Font.getFont(Main.vera, 10);
845 // Flags //////////////////////////////////////////////////////////////////////
847 public static final int MOUSEINSIDE = 0x00000001;
848 public static final int XAXIS = 0x00000002;
849 public static final int YAXIS = 0x00000004;
850 public static final int VISIBLE = 0x00000008;
851 public static final int VSHRINK = 0x00000010;
852 public static final int HSHRINK = 0x00000020;
853 public static final int RECONSTRAIN = 0x00000040;
854 public static final int REPLACE = 0x00000080;
856 // if true, this box has cursor in the cursor hash; FEATURE: GC issues?
857 public static final int CURSOR = 0x00010000;
858 public static final int CLIP = 0x00020000;
859 public static final int STOP_UPWARD_PROPAGATION = 0x00040000;
860 public static final int MOVED = 0x00080000;