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.
8 // FIXME: are traps on x/y meaningful?
9 // FIXME: if we trap on cols, then set rows to 0 (forcing cols to 1), does the cols trap get triggered?
10 // FIXME: if we change min{width/height}, thereby forcing a change to max{min/height}, does a trap on those get triggered?
11 // FIXME: trap on numchildren? replaces ChildChanged?
12 // FIXME: trap on visible, trigger when parent visibility changes
14 // FIXME: ax/ay nonsense
15 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
17 // FEATURE: mark to reflow starting with a certain child
18 // FEATURE: reintroduce surface.abort
22 import org.ibex.util.*;
23 import org.ibex.graphics.*;
27 * Encapsulates the data for a single Ibex box as well as all layout
31 * <p>The rendering process consists of four phases; each requires
32 * one DFS pass over the tree</p>
33 * <ol><li> <b>pack()</b>: each box sets its childrens' row/col
34 * <ol><li> <b>constrain()</b>: contentwidth is computed
35 * <li> <b>resize()</b>: width/height and x/y positions are set
36 * <li> <b>render()</b>: children draw their content onto the PixelBuffer.
39 * The first three passes together are called the <i>reflow</i>
40 * phase. Reflowing is done in a seperate pass since SizeChanges
41 * trigger a Surface.abort; if rendering were done in the same pass,
42 * rendering work done prior to the Surface.abort would be wasted.
44 public final class Box extends JS.Obj implements Callable {
46 private static final JS.Method METHOD = new JS.Method();
48 // Macros //////////////////////////////////////////////////////////////////////
50 final void REPLACE() { for(Box b2 = this; b2 != null && !b2.test(REPLACE); b2 = b2.parent) b2.set(REPLACE); }
51 final void RECONSTRAIN() { for(Box b2 = this; b2 != null && !b2.test(RECONSTRAIN); b2 = b2.parent) b2.set(RECONSTRAIN); }
52 final void REPACK() { for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK); }
54 //#define CHECKSET_SHORT(prop) short nu = (short)JSU.toInt(value); if (nu == prop) break; prop = nu;
55 //#define CHECKSET_INT(prop) int nu = JSU.toInt(value); if (nu == prop) break; prop = nu;
56 //#define CHECKSET_FLAG(flag) boolean nu = JSU.toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
57 //#define CHECKSET_BOOLEAJSU.N(prop) boolean nu = JSU.toBoolean(value); if (nu == prop) break; prop = nu;
58 //#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&JSU.toString(value).equals(prop))) break; prop=JSU.toString(value);
61 static Basket.Map boxToCursor = new Basket.HashMap(500, 3);
63 static final Font DEFAULT_FONT;
65 try { DEFAULT_FONT = Font.getFont((JS)Main.builtin.get(JSU.S("fonts/vera/Vera.ttf")), 10); }
66 catch(JSExn e) { throw new Error("Error loading default font: " + e); }
70 // Flags //////////////////////////////////////////////////////////////////////
72 static final int MOUSEINSIDE = 0x00000001;
73 static final int VISIBLE = 0x00000002;
74 static final int PACKED = 0x00000004;
75 public static final int HSHRINK = 0x00000008;
76 public static final int VSHRINK = 0x00000010;
77 static final int BLACK = 0x00000020; // for red-black code
79 static final int FIXED = 0x00000040;
80 static final boolean ROWS = true;
81 static final boolean COLS = false;
83 static final int ISROOT = 0x00000080;
84 static final int REPACK = 0x00000100;
85 static final int RECONSTRAIN = 0x00000200;
86 static final int REPLACE = 0x00000400;
88 static final int ALIGN_TOP = 0x00001000;
89 static final int ALIGN_BOTTOM = 0x00002000;
90 static final int ALIGN_LEFT = 0x00004000;
91 static final int ALIGN_RIGHT = 0x00008000;
92 static final int ALIGNS = 0x0000f000;
93 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
94 static final int CLIP = 0x00020000;
95 static final int STOP_UPWARD_PROPAGATION = 0x00040000;
96 static final int MOVED = 0x00080000;
99 // Instance Data //////////////////////////////////////////////////////////////////////
103 int flags = VISIBLE | PACKED | REPACK | RECONSTRAIN | REPLACE | FIXED | STOP_UPWARD_PROPAGATION | CLIP | MOVED;
105 private BalancedTree bt;
107 private String text = null;
108 private Font font = DEFAULT_FONT;
109 private Picture texture = null;
110 private short strokewidth = 1;
111 public int fillcolor = 0x00000000;
112 private int strokecolor = 0xFF000000;
114 private int aspect = 0;
116 // specified directly by user
117 public int minwidth = 0;
118 public int maxwidth = Integer.MAX_VALUE;
119 public int minheight = 0;
120 public int maxheight = Integer.MAX_VALUE;
121 private short rows = 1;
122 private short cols = 0;
123 private short rowspan = 1;
124 private short colspan = 1;
126 // computed during reflow
127 private short row = 0;
128 private short col = 0;
131 public int ax = 0; // FEATURE: roll these into x/y; requires lots of changes
132 public int ay = 0; // FEATURE: roll these into x/y; requires lots of changes; perhaps y()?
133 public int width = 0;
134 public int height = 0;
135 public int contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
136 public int contentheight = 0;
138 private Path path = null;
140 private Affine transform = null;
141 private VectorGraphics.RasterPath rpath = null;
142 private Affine rtransform = null;
145 // Instance Methods /////////////////////////////////////////////////////////////////////
147 public final int fontSize() { return font == null ? DEFAULT_FONT.pointsize : font.pointsize; }
149 /** invoked when a resource needed to render ourselves finishes loading */
150 public Object run(Object o) throws JSExn {
151 if (texture == null) { Log.warn(Box.class, "perform() called with null texture"); return null; }
152 if (texture.isLoaded) {
153 setWidth(max(texture.width, minwidth), maxwidth);
154 setHeight(max(texture.height, minheight), maxheight);
156 else { JS res = texture.stream; texture = null; throw new JSExn("image not found: "+res.unclone()); }
160 // FEATURE: use cx2/cy2 format
161 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
162 public void dirty() { dirty(0, 0, width, height); }
163 public void dirty(int x, int y, int w, int h) {
164 for(Box cur = this; cur != null; cur = cur.parent) {
165 // x and y have a different meaning on the root box
166 if (cur.parent != null && cur.test(CLIP)) {
167 w = min(x + w, cur.width) - max(x, 0);
168 h = min(y + h, cur.height) - max(y, 0);
172 if (w <= 0 || h <= 0) return;
173 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
180 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
182 /** should only be invoked on the root box */
183 public void reflow() {
186 test(HSHRINK) ? contentwidth : maxwidth,
187 test(VSHRINK) ? contentheight : maxheight);
191 private static Box[] frontier = new Box[65535];
192 /** pack the boxes into rows and columns, compute contentwidth */
194 if (!test(REPACK)) { constrain(); return; }
195 boolean haskid = false;
196 for(Box child = getChild(0); child != null; child = child.nextSibling()) { haskid = true; child.pack(); }
197 if (!haskid) { clear(REPACK); constrain(); return; }
198 int frontier_size = 0;
199 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan \
200 // contentheight/contentwidth contentwidth/contentheight
201 if (test(FIXED) == COLS) {
203 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
204 if (!child.test(PACKED) || !child.test(VISIBLE)) continue;
205 if (cols == 1) { child.row = rows; rows += child.rowspan; child.col = 0; continue; }
206 child.col = (short)(frontier_size <= 0 ? 0 : (frontier[frontier_size-1].col + frontier[frontier_size-1].colspan));
207 child.row = (short)(frontier_size <= 0 ? 0 : frontier[frontier_size-1].row);
208 if (child.col + min(cols,child.colspan) > cols) { child.col = 0; child.row++; }
209 for(int i=0; i<frontier_size; i++)
210 if (frontier[i].row + frontier[i].rowspan <= child.row) {
211 frontier[i--] = frontier[--frontier_size]; frontier[frontier_size] = null;
212 } else if (frontier[i].col<child.col+min(cols,child.colspan)&&frontier[i].col+frontier[i].colspan>child.col) {
213 child.col = (short)(frontier[i].col + frontier[i].colspan);
214 if (child.col + min(cols,child.colspan) > cols) {
215 child.row = (short)(frontier[i].row + frontier[i].rowspan);
216 for(i--; i>0; i--) child.row = (short)min(row, frontier[i].row + frontier[i].rowspan);
217 child.col = (short)0;
221 frontier[frontier_size++] = child;
223 for(int i=0; i<frontier_size; i++){ rows=(short)max(rows, frontier[i].row + frontier[i].rowspan); frontier[i] = null; }
227 set(RECONSTRAIN); // FIXME: be smarter / more incremental
231 public void constrain() {
232 if (!test(RECONSTRAIN)) return;
234 //#repeat contentwidth/contentheight contentheight/contentwidth minwidth/minheight row/col col/row \
235 // textwidth/textheight maxwidth/maxheight cols/rows rows/cols colspan/rowspan rowspan/colspan
236 contentwidth = bound(minwidth,
237 max(contentwidth, font == null || text == null ? 0 : font.textwidth(text)),
240 set(REPLACE); // FIXME: be smarter / more incremental
243 private final static JS SIZECHANGE = JSU.S("SizeChange");
245 void resize(int x, int y, int width, int height) {
246 if (x == this.x && y == this.y && width == this.width && height == this.height) return;
247 boolean sizechange = (this.width != width || this.height != height);
248 try { sizechange = sizechange && getTrap(SIZECHANGE) != null; } catch (JSExn e) {}
249 int thisx = parent == null ? 0 : this.x;
250 int thisy = parent == null ? 0 : this.y;
251 Box who = (parent == null ? this : parent);
252 if (this.x != x || this.y != y) set(MOVED);
253 if (texture == null && (text == null || text.equals("")) && !test(MOVED)) {
254 if ((fillcolor & 0xff000000) != 0 || parent == null) {
255 who.dirty(thisx+min(this.width,width), thisy, Math.abs(width-this.width), max(this.height, height));
256 who.dirty(thisx, thisy+min(this.height,height), max(this.width, width), Math.abs(height-this.height));
258 this.width = width; this.height = height; this.x = x; this.y = y;
260 who.dirty(thisx, thisy, this.width, this.height);
261 this.width = width; this.height = height; this.x = x; this.y = y;
264 if (sizechange) putAndTriggerTrapsAndCatchExceptions(SIZECHANGE, JSU.T);
267 private float targetColumnSize = (float)0.0;
268 private float targetRowSize = (float)0.0;
269 private static float[] sizes = new float[65535];
270 private static float[] sizes_v = new float[65535];
271 private static int[] regions = new int[65535];
272 private static int[] regions_v = new int[65535];
273 private static int numregions = 0;
274 private static int numregions_v = 0;
276 void solve(boolean findMinimum) {
277 int numkids = 0; for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) numkids++;
278 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height HSHRINK/VSHRINK numregions/numregions_v \
279 // maxwidth/maxheight cols/rows minwidth/minheight regions/regions_v targetColumnSize/targetRowSize sizes/sizes_v \
282 if (findMinimum) contentwidth = 0;
283 else targetColumnSize = 0;
284 } else if (cols == 1) {
287 for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling())
288 contentwidth = max(contentwidth, c.contentwidth);
290 targetColumnSize = width;
292 } else if (cols > 1) do {
294 // FIXME: cache these?
297 for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) {
298 regions[numregions++] = c.col;
299 regions[numregions++] = min(cols, c.col+c.colspan);
301 Vec.sortInts(regions, 0, numregions);
303 int newnumregions = numregions;
304 for(int i=1; i<numregions; i++) {
305 if (regions[j] != regions[i]) j++;
306 else newnumregions--;
307 regions[j] = regions[i];
309 numregions = newnumregions;
310 if (regions[numregions-1] == cols) numregions--;
311 else regions[numregions] = cols;
313 int target = findMinimum ? 0 : Math.max(width, contentwidth);
314 // priority 0: (inviolable) honor minwidths
315 // priority 1: sum of columns no greater than parent
316 // priority 2: honor maxwidths
317 // priority 3: equalize columns
318 float targetColumnSize = target == 0 ? 0 : this.targetColumnSize;
319 float last_columnsize = 0;
320 float last_total = 0;
322 boolean first = true;
325 for(int r=0; r<numregions; r++) total += (sizes[r] = (float)(targetColumnSize * (regions[r+1]-regions[r])));
327 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
328 for(int r=(child.col==0?0:minregion); r<numregions; r++) {
329 if (regions[r+1] < child.col) continue;
330 if (regions[r] >= min(child.col+child.colspan,cols)) { minregion = r; break; }
332 int child_maxwidth = child.test(HSHRINK)?child.contentwidth:child.maxwidth;
333 if (sizes[r] <= (float)(targetColumnSize*(regions[r+1]-regions[r])))
334 if ((child.colspan * targetColumnSize) > (child_maxwidth + (float)0.5))
335 sizes[r] = (float)Math.min(sizes[r], (regions[r+1]-regions[r])*(child_maxwidth/child.colspan));
336 if ((child.colspan * targetColumnSize) < (child.contentwidth - (float)0.5))
337 sizes[r] = (float)Math.max(sizes[r], (regions[r+1]-regions[r])*(child.contentwidth/child.colspan));
340 float save = targetColumnSize;
341 if (Math.abs(total - target) <= (float)1.0) break;
343 if (Math.abs(total - last_total) <= (float)1.0) break;
345 last_columnsize = ((total - target) / (float)cols) + targetColumnSize;
347 if (total < target) targetColumnSize += Math.abs((last_columnsize - targetColumnSize) / (float)1.1);
348 else if (total > target) targetColumnSize -= Math.abs((last_columnsize - targetColumnSize) / (float)1.1);
349 last_columnsize = save;
353 if (findMinimum) contentwidth = Math.round(total);
354 else this.targetColumnSize = targetColumnSize;
361 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
362 if (!child.test(VISIBLE)) continue;
363 if (!child.test(REPLACE)) continue;
364 int child_width, child_height, child_x, child_y;
365 if (!child.test(PACKED)) {
366 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - Math.abs(child.ax));
367 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - Math.abs(child.ay));
368 child_width = max(child.minwidth, child_width);
369 child_height = max(child.minheight, child_height);
370 int gap_x = width - child_width;
371 int gap_y = height - child_height;
372 child_x = child.ax + (child.test(ALIGN_RIGHT) ? gap_x : !child.test(ALIGN_LEFT) ? gap_x / 2 : 0);
373 child_y = child.ay + (child.test(ALIGN_BOTTOM) ? gap_y : !child.test(ALIGN_TOP) ? gap_y / 2 : 0);
376 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
377 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
378 // child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP lp_h/lp \
379 // numregions/numregions_v regions/regions_v targetColumnSize/targetRowSize sizes/sizes_v
385 for(int r=0; r<numregions; r++) {
386 if (regions[r] < child.col) child_x += Math.round(sizes[r]);
387 else if (regions[r] < child.col+child.colspan) child_width += Math.round(sizes[r]);
390 diff = (child_width - (child.test(HSHRINK) ? child.contentwidth : min(child_width, child.maxwidth)));
391 child_x += (child.test(ALIGN_RIGHT) ? diff : child.test(ALIGN_LEFT) ? 0 : diff / 2);
395 if (test(MOVED)) child.set(MOVED);
396 child.resize(child_x, child_y, child_width, child_height);
400 for(Box child = getChild(0); child != null; child = child.nextSibling())
401 if (child.test(VISIBLE) && child.treeSize() > 0)
407 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
409 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
410 public void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, Affine a) {
411 if (!test(VISIBLE)) return;
412 int globalx = parentx + (parent == null ? 0 : x);
413 int globaly = parenty + (parent == null ? 0 : y);
415 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
417 cx1 = max(cx1, globalx);
418 cy1 = max(cy1, globaly);
419 cx2 = min(cx2, globalx + width);
420 cy2 = min(cy2, globaly + height);
421 if (cx2 <= cx1 || cy2 <= cy1) return;
424 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
425 buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
427 if (texture != null && texture.isLoaded)
428 for(int x = globalx; x < cx2; x += texture.width)
429 for(int y = globaly; y < cy2; y += texture.height)
430 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
432 if (text != null && !text.equals("") && font != null) {
433 int gap_x = width - font.textwidth(text);
434 int gap_y = height - font.textheight(text);
435 int text_x = globalx + (test(ALIGN_RIGHT) ? gap_x : !test(ALIGN_LEFT) ? gap_x/2 : 0);
436 int text_y = globaly + (test(ALIGN_BOTTOM) ? gap_y : !test(ALIGN_TOP) ? gap_y/2 : 0);
437 font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2);
440 if (path != null) path.realize(Affine.translate(globalx, globaly)).stroke(buf, 1, strokecolor);
442 for(Box b = getChild(0); b != null; b = b.nextSibling())
443 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
447 // Methods to implement org.ibex.js.JS //////////////////////////////////////
450 public JS call(JS method, JS[] args) throws JSExn {
451 switch (args.length) {
453 //#switch(JSU.toString(method))
455 Box b = (Box)args[0];
456 if (b.parent != this)
457 return (redirect == null || redirect == this) ?
458 JSU.N(-1) : redirect.call(method, args);
459 return JSU.N(b.getIndexInParent());
462 Box b = (Box)args[0];
463 JS ret = new JS.Obj();
464 ret.put(JSU.S("x"), JSU.N(b.localToGlobalX(0) - localToGlobalX(0)));
465 ret.put(JSU.S("y"), JSU.N(b.localToGlobalY(0) - localToGlobalY(0)));
471 return super.call(method, args);
474 public JS get(JS name) throws JSExn {
476 return redirect == null ? null : redirect == this ? getChild(JSU.toInt(name)) : redirect.get(name);
478 //#switch(JSU.toString(name))
479 case "surface": return parent == null ? null : parent.getAndTriggerTraps(name);
480 case "indexof": return METHOD;
481 case "distanceto": return METHOD;
482 case "text": return JSU.S(text);
484 if (path != null) return JSU.S(path.toString());
485 if (text == null) return null;
486 if (font == null) return null;
488 for(int i=0; i<text.length(); i++) ret += font.glyphs[text.charAt(i)].path;
491 case "fill": return JSU.S(Color.colorToString(fillcolor));
492 case "strokecolor": return JSU.S(Color.colorToString(strokecolor));
493 case "textcolor": return JSU.S(Color.colorToString(strokecolor));
494 case "font": return font == null ? null : font.stream;
495 case "fontsize": return font == null ? JSU.N(10) : JSU.N(font.pointsize);
496 case "strokewidth": return JSU.N(strokewidth);
497 case "align": return JSU.S(alignToString());
498 case "thisbox": return this;
499 case "shrink": return JSU.B(test(HSHRINK) || test(VSHRINK));
500 case "hshrink": return JSU.B(test(HSHRINK));
501 case "vshrink": return JSU.B(test(VSHRINK));
502 case "aspect": return JSU.N(aspect);
503 case "x": return (parent == null || !test(VISIBLE)) ? JSU.N(0) : test(PACKED) ? JSU.N(x) : JSU.N(ax);
504 case "y": return (parent == null || !test(VISIBLE)) ? JSU.N(0) : test(PACKED) ? JSU.N(y) : JSU.N(ay);
505 case "cols": return test(FIXED) == COLS ? JSU.N(cols) : JSU.N(0);
506 case "rows": return test(FIXED) == ROWS ? JSU.N(rows) : JSU.N(0);
507 case "colspan": return JSU.N(colspan);
508 case "rowspan": return JSU.N(rowspan);
509 case "width": getRoot().reflow(); return JSU.N(width);
510 case "height": getRoot().reflow(); return JSU.N(height);
511 case "minwidth": return JSU.N(minwidth);
512 case "maxwidth": return JSU.N(maxwidth);
513 case "minheight": return JSU.N(minheight);
514 case "maxheight": return JSU.N(maxheight);
515 case "clip": return JSU.B(test(CLIP));
516 case "visible": return JSU.B(test(VISIBLE) && (parent == null || (parent.get(JSU.S("visible")) == JSU.T)));
517 case "packed": return JSU.B(test(PACKED));
518 case "globalx": return JSU.N(localToGlobalX(0));
519 case "globaly": return JSU.N(localToGlobalY(0));
520 case "cursor": return test(CURSOR) ? JSU.S((String)boxToCursor.get(this)) : null;
522 if (getSurface() == null) return null;
523 if (getSurface()._mousex == Integer.MAX_VALUE)
524 throw new JSExn("you cannot read from the box.mouse property in background thread context");
526 case "numchildren": return redirect == null ? JSU.N(0) : redirect == this ? JSU.N(treeSize()) : redirect.get(JSU.S("numchildren"));
527 case "redirect": return redirect == null ? null : redirect == this ? JSU.T : redirect.get(JSU.S("redirect"));
528 case "Minimized": if (parent == null && getSurface() != null) return JSU.B(getSurface().minimized);
529 default: return super.get(name);
531 throw new Error("unreachable"); // unreachable
534 private class Mouse extends JS.Immutable implements JS.Cloneable {
535 public JS get(JS key) throws JSExn {
536 //#switch(JSU.toString(key))
537 case "x": return JSU.N(globalToLocalX(getSurface()._mousex));
538 case "y": return JSU.N(globalToLocalY(getSurface()._mousey));
540 // this might not get recomputed if we change mousex/mousey...
541 case "inside": return JSU.B(test(MOUSEINSIDE));
543 return super.get(key);
547 //#repeat setWidth/setHeight minwidth/minheight maxwidth/maxheight pendingWidth/pendingHeight
548 public void setWidth(int min, int max) {
549 // FIXME: deal with conflicting min/max
550 if (this.minwidth == min && this.maxwidth == max) return;
554 if (parent != null || getSurface() == null) return;
555 getSurface().pendingWidth = maxwidth;
557 // FIXME: the repeat doesn't work right here
558 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
562 public void put(JS name, JS value) throws JSExn {
563 if (JSU.isInt(name)) { put(JSU.toInt(name), value); return; }
564 //#switch(JSU.toString(name))
565 case "thisbox": if (value == null) removeSelf();
566 case "text": { String s = value == null ? "" : JSU.toString(value); CHECKSET_STRING(text); RECONSTRAIN(); dirty(); }
567 case "strokecolor": value = JSU.N(Color.stringToColor(JSU.toString(value))); CHECKSET_INT(strokecolor); dirty();
568 case "textcolor": value = JSU.N(Color.stringToColor(JSU.toString(value))); CHECKSET_INT(strokecolor); dirty();
569 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
570 case "shrink": CHECKSET_FLAG(HSHRINK | VSHRINK); RECONSTRAIN();
571 case "hshrink": CHECKSET_FLAG(HSHRINK); RECONSTRAIN();
572 case "vshrink": CHECKSET_FLAG(VSHRINK); RECONSTRAIN();
573 case "path": path = Path.parse(JSU.toString(value)); RECONSTRAIN(); dirty();
574 case "width": setWidth(JSU.toInt(value), JSU.toInt(value));
575 case "height": setHeight(JSU.toInt(value), JSU.toInt(value));
576 case "maxwidth": setWidth(minwidth, JSU.toInt(value));
577 case "minwidth": setWidth(JSU.toInt(value), maxwidth);
578 case "maxheight": setHeight(minheight, JSU.toInt(value));
579 case "minheight": setHeight(JSU.toInt(value), maxheight);
580 case "colspan": if (JSU.toInt(value) > 0) { CHECKSET_SHORT(colspan); if (parent != null) parent.REPACK(); }
581 case "rowspan": if (JSU.toInt(value) > 0) { CHECKSET_SHORT(rowspan); if (parent != null) parent.REPACK(); }
582 case "visible": CHECKSET_FLAG(VISIBLE); RECONSTRAIN(); dirty();
583 case "packed": CHECKSET_FLAG(PACKED); if (parent != null) { parent.REPACK(); } else { REPACK(); }
584 case "align": clear(ALIGNS); setAlign(value); REPLACE();
585 case "cursor": setCursor(JSU.toString(value));
586 case "fill": setFill(value);
587 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
588 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); REPACK();
589 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); REPACK();
593 int mousex = JSU.toInt(((JS)value).get(JSU.S("x")));
594 int mousey = JSU.toInt(((JS)value).get(JSU.S("y")));
595 getSurface()._mousex = localToGlobalX(mousex);
596 getSurface()._mousey = localToGlobalY(mousey);
598 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = JSU.toBoolean(value); // FEATURE
599 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = JSU.toBoolean(value); // FEATURE
600 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
602 for(Box cur = (Box)value; cur != null || cur == redirect; cur = cur.parent)
603 if (cur == redirect) { redirect = (Box)value; return; }
604 JSU.error("redirect can only be set to a descendant of its current value");
605 case "fontsize": font = Font.getFont(font == null ? null : font.stream, JSU.toInt(value)); RECONSTRAIN(); dirty();
607 if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
608 //FIXME: if (font == value) return; // FIXME: unclone()
609 font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
612 case "x": if (parent==null && Surface.fromBox(this)!=null) {
615 if (test(PACKED) && parent != null) return;
619 case "y": if (parent==null && Surface.fromBox(this)!=null) {
622 if (test(PACKED) && parent != null) return;
626 case "titlebar": if (getSurface()!=null) getSurface().setTitleBarText(JSU.toString(value)); super.put(name,value);
629 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
630 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
631 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
632 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
633 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
634 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
635 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
636 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
637 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
638 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
639 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
640 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
641 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
642 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
643 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
644 case "HScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
645 parent.putAndTriggerTraps(name, JSU.N(JSU.toFloat(value) * ((float)parent.fontSize()) / ((float)fontSize())));
646 case "VScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
647 parent.putAndTriggerTraps(name, JSU.N(JSU.toFloat(value) * ((float)parent.fontSize()) / ((float)fontSize())));
649 case "_Move": propagateDownward(name, value, false);
650 case "_Press1": propagateDownward(name, value, false);
651 case "_Press2": propagateDownward(name, value, false);
652 case "_Press3": propagateDownward(name, value, false);
653 case "_Release1": propagateDownward(name, value, false);
654 case "_Release2": propagateDownward(name, value, false);
655 case "_Release3": propagateDownward(name, value, false);
656 case "_Click1": propagateDownward(name, value, false);
657 case "_Click2": propagateDownward(name, value, false);
658 case "_Click3": propagateDownward(name, value, false);
659 case "_DoubleClick1": propagateDownward(name, value, false);
660 case "_DoubleClick2": propagateDownward(name, value, false);
661 case "_DoubleClick3": propagateDownward(name, value, false);
662 case "_KeyPressed": propagateDownward(name, value, false);
663 case "_KeyReleased": propagateDownward(name, value, false);
664 case "_HScroll": propagateDownward(name, value, false);
665 case "_VScroll": propagateDownward(name, value, false);
667 case "SizeChange": return;
668 case "ChildChange": return;
669 case "Enter": return;
670 case "Leave": return;
672 default: super.put(name, value);
676 private String alignToString() {
677 switch(flags & ALIGNS) {
678 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
679 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
680 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
681 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
682 case ALIGN_TOP: return "top";
683 case ALIGN_BOTTOM: return "bottom";
684 case ALIGN_LEFT: return "left";
685 case ALIGN_RIGHT: return "right";
686 case 0: return "center";
687 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
691 private void setAlign(JS value) throws JSExn {
693 //#switch(JSU.toString(value))
694 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
695 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
696 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
697 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
698 case "top": set(ALIGN_TOP);
699 case "bottom": set(ALIGN_BOTTOM);
700 case "left": set(ALIGN_LEFT);
701 case "right": set(ALIGN_RIGHT);
702 default: JSU.log("invalid alignment \"" + JSU.str(value) + "\"");
706 private void setCursor(String value) throws JSExn {
707 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
708 if (value.equals(boxToCursor.get(this))) return;
710 boxToCursor.put(this, value);
711 Surface surface = getSurface();
712 if (surface == null) return;
713 String tempcursor = surface.cursor;
714 propagateDownward(null, null, false);
715 if (surface.cursor != tempcursor) surface.syncCursor();
718 private void setFill(JS value) throws JSExn {
720 if (texture == null && fillcolor == 0) return;
723 } else if (JSU.isString(value)) {
724 int newfillcolor = Color.stringToColor(JSU.toString(value));
725 if (newfillcolor == fillcolor) return;
726 fillcolor = newfillcolor;
729 Picture newtex = Picture.load((JS)value, this);
730 if (texture == newtex) return;
733 if (texture != null && texture.isLoaded) run(null);
739 * Handles events which propagate down the box tree. If obscured
740 * is set, then we merely check for Enter/Leave.
742 private void propagateDownward(JS name_, JS value, boolean obscured) throws JSExn {
744 String name = JSU.toString(name_);
745 if (getSurface() == null) return;
746 int x = globalToLocalX(getSurface()._mousex);
747 int y = globalToLocalY(getSurface()._mousey);
748 boolean wasinside = test(MOUSEINSIDE);
749 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
750 if (!wasinside && isinside) {
752 putAndTriggerTrapsAndCatchExceptions(JSU.S("Enter"), JSU.T);
754 if (isinside && test(CURSOR)) getSurface().cursor = (String)boxToCursor.get(this);
755 if (wasinside && !isinside) {
757 putAndTriggerTrapsAndCatchExceptions(JSU.S("Leave"), JSU.T);
760 boolean found = false;
761 if (wasinside || isinside)
762 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
763 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
765 if (name.equals("_HScroll") || name.equals("_VScroll"))
766 value2 = JSU.N(JSU.toFloat(value) * ((float)child.fontSize()) / (float)fontSize());
767 if (obscured || !child.inside(x - child.x, y - child.y)) {
768 child.propagateDownward(name_, value2, true);
771 child.clear(STOP_UPWARD_PROPAGATION);
772 if (name != null) child.putAndTriggerTrapsAndCatchExceptions(name_, value2);
773 else child.propagateDownward(name_, value2, obscured);
775 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
777 if (child.inside(x - child.x, y - child.y))
778 if (name != null && name.equals("_Move")) obscured = true;
782 if (!obscured && !found)
783 if ("_Move".equals(name) || name.startsWith("_Release") || wasinside)
785 putAndTriggerTrapsAndCatchExceptions(JSU.S(name.substring(1)), value);
788 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
789 public static Box whoIs(Box cur, int x, int y) {
791 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
795 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
796 // ANY part of Ibex, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
798 if (!cur.test(VISIBLE)) return null;
799 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
801 for(int i=cur.treeSize() - 1; i>=0; i--) {
802 Box child = cur.getChild(i);
803 if (child == null) continue; // since this method is unsynchronized, we have to double-check
806 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
816 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
818 void mark_for_repack() { REPACK(); }
819 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
820 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
821 public Surface getSurface() { return Surface.fromBox(getRoot()); }
822 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
823 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
824 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
825 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
826 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
827 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
829 static short min(short a, short b) { if (a<b) return a; else return b; }
830 static int min(int a, int b) { if (a<b) return a; else return b; }
831 static float min(float a, float b) { if (a<b) return a; else return b; }
833 static short max(short a, short b) { if (a>b) return a; else return b; }
834 static int max(int a, int b) { if (a>b) return a; else return b; }
835 static float max(float a, float b) { if (a>b) return a; else return b; }
837 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; }
838 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; }
839 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
840 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
842 void set(int mask) { flags |= mask; }
843 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
844 void clear(int mask) { flags &= ~mask; }
845 public boolean test(int mask) { return ((flags & mask) == mask); }
848 // Tree Handling //////////////////////////////////////////////////////////////////////
850 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
851 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
852 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
853 public final Box getChild(int i) {
854 if (i < 0) return null;
855 if (i >= treeSize()) return null;
856 return (Box)getNode(i);
859 // Tree Manipulation /////////////////////////////////////////////////////////////////////
861 public void removeSelf() {
862 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
863 Surface surface = Surface.fromBox(this);
864 if (surface != null) surface.dispose(true);
867 /** remove the i^th child */
868 public void removeChild(int i) {
872 b.clear(MOUSEINSIDE);
876 putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
879 public void put(int i, JS value) throws JSExn {
882 if (value != null && !(value instanceof Box)) {
883 if (Log.on) JSU.warn("attempt to set a numerical property on a box to a non-box");
887 if (redirect == null) {
888 if (value == null) putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), getChild(i));
889 else JSU.warn("attempt to add/remove children to/from a node with a null redirect");
891 } else if (redirect != this) {
892 if (value != null) putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), value);
893 redirect.put(i, value);
895 Box b = (Box)redirect.get(JSU.N(i));
896 if (b != null) putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
899 } else if (value == null) {
900 if (i < 0 || i > treeSize()) return;
903 putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
908 // check if box being moved is currently target of a redirect
909 for(Box cur = b.parent; cur != null; cur = cur.parent)
910 if (cur.redirect == b) {
911 if (Log.on) JSU.warn("attempt to move a box that is the target of a redirect");
915 // check for recursive ancestor violation
916 for(Box cur = this; cur != null; cur = cur.parent)
918 if (Log.on) JSU.warn("attempt to make a node a parent of its own ancestor");
919 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
923 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
927 // need both of these in case child was already uncalc'ed
932 putAndTriggerTrapsAndCatchExceptions(JSU.S("ChildChange"), b);
936 public void putAndTriggerTrapsAndCatchExceptions(JS name, JS val) {
938 putAndTriggerTraps(name, val);
940 JSU.log("caught js exception while putting to trap \""+ JSU.str(name)+"\"");
942 } catch (Exception e) {
943 JSU.log("caught exception while putting to trap \""+ JSU.str(name)+"\"");
948 // BalancedTree functions
949 private void insertNode(int p, Box b) {
950 if(bt == null) bt = new BalancedTree();
954 private int treeSize() { return bt == null ? 0 : bt.treeSize(); }
955 private int indexNode(Box b) { return bt == null ? -1 : bt.indexNode(b); }
956 private void deleteNode(int p) { bt.deleteNode(p); }
957 private Box getNode(int p) { return (Box)bt.getNode(p); }