1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
4 // **** This file must be preprocessed before compilation ****
6 // RULE: coordinates on non-static methods are ALWAYS relative to the
7 // upper-left hand corner of <tt>this</tt>
9 // FEATURE: reflow before allowing js to read from width/height
10 // FEATURE: fastpath for rows=1/cols=1
11 // FEATURE: reflow starting with a certain child
12 // FEATURE: separate mark_for_reflow and mark_for_resize
18 import org.xwt.util.*;
19 import org.xwt.translators.*;
23 * Encapsulates the data for a single XWT box as well as all layout
28 * This is the real meat of XWT. Part of its monolithic design is for
29 * performance reasons: deep inheritance heirarchies are slow, and
30 * neither javago nor GCJ can inline across class boundaries.
33 * <p>The rendering process consists of three phases; each requires
34 * one DFS pass over the tree</p>
36 * <ol><li> <b>repacking</b>: children of a box are packed into columns
37 * and rows according to their colspan/rowspan attributes and
38 * ordering. Minimum and maximum sizes of columns are computed.
40 * <li> <b>resizing</b>: width/height and x/y positions of children
41 * are assigned. If a PosChange or SizeChange is triggered,
42 * <tt>Surface.abort</tt> will be set and the resizing process will
45 * <li> <b>repainting</b>: children draw their content onto the
49 * The first two passes together are called the <i>reflow</i> phase.
51 * Reflowing is done in a seperate pass since PosChanges and
52 * SizeChanges trigger an Surface.abort; if rendering were done in the same
53 * pass, rendering work done prior to the Surface.abort would be wasted.
55 * The two passes are repack and resize. Together they are known as
56 * reflow. Repacking assigns boxes to the appropriate grid
57 * coordinates within the parents and computes
58 * contentwidth/contentheight. Resize computes actual size and
61 * A note on coordinates: the Box class represents regions
62 * internally as x,y,w,h tuples, even though the PixelBuffer class
63 * uses x1,y1,x2,y2 tuples.
65 public final class Box extends JS.Scope {
67 public Box() { super(null); }
70 // Misc instance data ////////////////////////////////////////////////////////////////
72 static int sizePosChangesSinceLastRender = 0;
75 // Misc instance data ////////////////////////////////////////////////////////////////
77 boolean needs_reflow = true;
78 //#define MARK_FOR_REFLOW_this for(Box b2 = this; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
79 //#define MARK_FOR_REFLOW_b for(Box b2 = b; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
80 //#define MARK_FOR_REFLOW_b_parent for(Box b2 = b.parent; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
83 Surface surface = null; // null on all non-root boxen
85 // Flags ///////////////////////////////////////////////////////////////////////////////
87 static final int MOUSEINSIDE_FLAG = 0x00000001;
88 static final int INVISIBLE_FLAG = 0x00000002;
89 static final int NOTPACKED_FLAG = 0x00000004;
90 static final int HSHRINK_FLAG = 0x00000008;
91 static final int VSHRINK_FLAG = 0x00000010;
92 static final int FONT_CHANGED_FLAG = 0x00000040; // set when font changes, cleared during repack
93 static final int ISROOT_FLAG = 0x00000080;
94 static final int NOCLIP_FLAG = 0x00000100;
95 static final int ALIGN_TOP_FLAG = 0x00001000;
96 static final int ALIGN_BOTTOM_FLAG = 0x00002000;
97 static final int ALIGN_LEFT_FLAG = 0x00004000;
98 static final int ALIGN_RIGHT_FLAG = 0x00008000;
99 static final int ALIGN_FLAGS = 0x0000f000;
102 // Geometry ////////////////////////////////////////////////////////////////////////////
104 // xwt can be compiled with 16-bit lengths to save memory on small devices
106 //#define MAX_LENGTH Integer.MAX_VALUE
107 //#define MIN_LENGTH Integer.MIN_VALUE
109 // always correct (set directly by user)
110 public LENGTH minwidth = 0;
111 public LENGTH minheight = 0;
112 public LENGTH maxwidth = MAX_LENGTH;
113 public LENGTH maxheight = MAX_LENGTH;
114 private String text = null;
115 private Font font = null;
116 private LENGTH textwidth = 0;
117 private LENGTH textheight = 0;
119 // FEATURE: use shorts
120 private int rows = 1;
121 private int cols = 0;
122 private int rowspan = 1;
123 private int colspan = 1;
125 // computed during reflow
128 public LENGTH width = 0;
129 public LENGTH height = 0;
130 private int row = 0; // FEATURE use a short
131 private int col = 0; // FEATURE use a short
132 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
133 private LENGTH contentheight = 0;
134 private LENGTH offset_x = 0;
135 private LENGTH offset_y = 0;
138 // Rendering Properties ///////////////////////////////////////////////////////////
140 private VectorGraphics.VectorPath path = null;
141 private VectorGraphics.Affine transform = null;
143 private VectorGraphics.RasterPath rpath = null;
144 private VectorGraphics.Affine rtransform = null;
146 //private VectorGraphics.Paint fill = null;
147 //private VectorGraphics.Paint stroke = null;
150 public Picture image; // will disappear
151 private int fillcolor = 0x00000000; // will become VectorGraphics.Paint
152 private int strokecolor = 0xFF000000; // will become VectorGraphics.Paint
153 private int textcolor = 0xFF000000; // will become VectorGraphics.Paint
155 private String cursor = null; // the cursor for this box
158 // Instance Methods /////////////////////////////////////////////////////////////////////
160 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
161 public final void dirty() {
162 if ((flags & NOCLIP_FLAG) != 0 && parent != null) parent.dirty();
163 else dirty(0, 0, width, height);
165 public final void dirty(int x, int y, int w, int h) {
166 for(Box cur = this; cur != null; cur = cur.parent) {
167 if ((flags & NOCLIP_FLAG) == 0) {
168 w = min(x + w, cur.width) - max(x, 0);
169 h = min(y + h, cur.height) - max(y, 0);
173 if (w <= 0 || h <= 0) return;
174 if (cur.parent == null && cur.surface != null) cur.surface.dirty(x, y, w, h);
181 * Given an old and new mouse position, this will update <tt>mouseinside</tt> and check
182 * to see if this node requires any Enter, Leave, or Move notifications.
184 * @param forceleave set to true by the box's parent if the mouse is inside an older
185 * sibling, which is covering up this box.
187 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
188 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
190 boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
191 boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
192 if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
194 if (!wasinside && !isinside) return;
196 if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
197 else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
198 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
199 put("Move", Boolean.TRUE);
201 if (isinside && cursor != null) getRoot().cursor = cursor;
203 // if the mouse has moved into our padding region, it is considered 'outside' all our children
204 if (!(mousex >= 0 && mousey >= 0 && mousex < width && mousey < height)) forceleave = true;
206 for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
207 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
208 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
213 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
215 /** only for use on the root box */
216 void reflow() { reflow(width, height); }
217 void reflow(int new_width, int new_height) {
219 if (Surface.abort) return;
220 //#repeat width/height new_width/new_height HSHRINK_FLAG/VSHRINK_FLAG contentwidth/contentheight minwidth/minheight maxwidth/maxheight
221 new_width = bound(max(contentwidth, minwidth),
223 ((flags & HSHRINK_FLAG) != 0) ? max(contentwidth, minwidth) : maxwidth);
225 resize(x, y, new_width, new_height);
228 /** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
230 if (!needs_reflow) return;
231 contentwidth = contentheight = 0;
233 // --- Phase 0 ----------------------------------------------------------------------
235 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
236 if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
237 child.flags |= FONT_CHANGED_FLAG;
238 child.needs_reflow = true;
241 if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
243 flags &= ~FONT_CHANGED_FLAG;
245 // --- Phase 1 ----------------------------------------------------------------------
246 // assign children to their row/column positions (assuming constrained columns)
247 if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
248 //#repeat x/y y/x width/height col/row row/col cols/rows rows/cols colspan/rowspan rowspan/colspan colWidth/rowHeight numRowsInCol/numColsInRow INNER/INNER2 maxwidth/maxheight minwidth/minheight colMaxWidth/rowMaxHeight OUTER/OUTER2 INNER/INNER2
249 if (rows == 0 && numChildren() != 0) {
250 int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
251 Box child = getChild(0);
252 for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
253 OUTER: for(int row=0; child != null; row++) {
254 for(int col=0; child != null && col < cols;) {
255 INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
256 while(col < cols && numRowsInCol[col] > row) col++;
257 for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
258 if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
261 if (col + min(cols, child.colspan) > cols) break;
262 for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
265 col += min(cols, child.colspan);
266 child = child.nextSibling();
267 for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
273 // --- Phase 2 ----------------------------------------------------------------------
274 // compute the min/max sizes of the columns and rows and set our contentwidth
275 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight numCols/numRows textwidth/textheight
276 if (numChildren() != 0) {
279 for(Box child = getChild(0); child != null; child = child.nextSibling())
280 numCols = max(numCols, child.col + child.colspan);
281 LENGTH[] colWidth = new LENGTH[numCols];
282 for(Box child = getChild(0); child != null; child = child.nextSibling())
283 if (!(((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
284 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
285 for(int col=0; col<numCols; col++) contentwidth += colWidth[col];
287 contentwidth = max(textwidth, contentwidth);
288 contentwidth = bound(minwidth, contentwidth, maxwidth);
292 if ((flags & NOTPACKED_FLAG) == 0) {
294 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
295 if ((flags & HSHRINK_FLAG) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
296 if ((flags & VSHRINK_FLAG) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
297 // FIXME: separate offset_x needed for the path
299 //#repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
300 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
301 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
302 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
303 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
304 int left = min(min(x1, x2), min(x3, x4));
305 int right = max(max(x1, x2), max(x3, x4));
306 contentwidth = max(contentwidth, right - left);
307 offset_x = -1 * left;
313 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
315 // --- Phase 1 ----------------------------------------------------------------------
316 // run PosChange/SizeChange, dirty as needed
317 if (x != this.x || y != this.y || width != this.width || height != this.height) {
318 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
319 boolean sizechange = false, poschange = false;
320 if ((this.width != width || this.height != height) && get("SizeChange", Trap.class) != null) sizechange = true;
321 if ((this.x != x || this.y != y) && get("PosChange", Trap.class) != null) poschange = true;
322 this.width = width; this.height = height; this.x = x; this.y = y;
324 if (sizechange || poschange)
325 if (sizePosChangesSinceLastRender == 500) {
326 if (Log.on) Log.logJS(this, "Warning, more than 500 SizeChange/PosChange traps triggered since last complete render");
328 sizePosChangesSinceLastRender++;
329 try { if (sizechange) put("SizeChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
330 try { if (poschange) put("PosChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
331 Surface.abort = true;
337 // --- short circuit ----------------------------------------------------------------
338 if (!needs_reflow) return;
339 needs_reflow = false;
340 if (numChildren() == 0) return;
342 // --- Phase 2 ----------------------------------------------------------------------
343 // compute the min/max sizes of the columns and rows and set initial width/height to minimums
345 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight marginWidth/marginHeight numCols/numRows
348 for(Box child = getChild(0); child != null; child = child.nextSibling())
349 numCols = max(numCols, child.col + child.colspan);
350 LENGTH[] colWidth = new LENGTH[numCols];
351 LENGTH[] colMaxWidth = new LENGTH[numCols];
352 int marginWidth = width;
353 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = -1;
356 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
357 if (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)) continue;
358 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight HSHRINK_FLAG/VSHRINK_FLAG numCols/numRows
359 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
360 for(int i=child.col; i<child.col+child.colspan && i<numCols; i++)
361 colMaxWidth[i] = max(colMaxWidth[i], (((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) / child.colspan);
365 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight marginWidth/marginHeight
366 for(int i=0; i<colMaxWidth.length; i++) if (colMaxWidth[i] == -1) colMaxWidth[i] = MAX_LENGTH;
368 for(int i=0; i<colMaxWidth.length; i++) {
369 if (colMaxWidth[i] == MAX_LENGTH) { marginWidth = 0; break; }
370 marginWidth -= colMaxWidth[i];
371 if (marginWidth < 0) { marginWidth = 0; break; }
376 // --- Phase 3 ----------------------------------------------------------------------
377 // hand out the slack
379 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight numCols/numRows
381 for(int i=0; i<numCols; i++) slack -= colWidth[i];
382 if (numChildren() > 0)
384 // FEATURE: inefficient
385 int startslack = slack;
386 int increment = max(1, slack / numCols);
387 for(int col=0; col < numCols && slack > 0; col++) {
388 slack += colWidth[col];
389 colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
390 slack -= colWidth[col];
392 if (slack == startslack) break;
397 // --- Phase 4 ----------------------------------------------------------------------
398 // assign children's new sizes and positions and recurse
399 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
400 if ((child.flags & INVISIBLE_FLAG) != 0) continue;
401 int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
402 if ((child.flags & NOTPACKED_FLAG) != 0) {
405 child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x);
406 child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y);
409 //#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight HSHRINK_FLAG/VSHRINK_FLAG marginWidth/marginHeight child_x/child_y child_width/child_height ALIGN_LEFT_FLAG/ALIGN_TOP_FLAG ALIGN_RIGHT_FLAG/ALIGN_BOTTOM_FLAG
410 child_width = 0; for(int i=child.col; i<child.col+child.colspan && i<colWidth.length; i++) child_width += colWidth[i];
411 diff = bound(child.contentwidth, child_width, ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) - child_width;
412 if (transform == null) {
413 if ((flags & ALIGN_RIGHT_FLAG) != 0) child_x = marginWidth;
414 else if ((flags & ALIGN_LEFT_FLAG) == 0) child_x = marginWidth / 2;
416 for(int i=0; i<child.col; i++) child_x += colWidth[i];
417 if (diff < 0) child_x += -1 * (diff / 2);
421 child.resize(child_x, child_y, child_width, child_height);
428 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
430 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
431 void render(int parentx, int parenty, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf, VectorGraphics.Affine a) {
432 if (Surface.abort || (flags & INVISIBLE_FLAG) != 0) return;
433 int globalx = parentx + (parent == null ? 0 : x);
434 int globaly = parenty + (parent == null ? 0 : y);
436 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
438 if ((flags & NOCLIP_FLAG) == 0) {
439 clipw = min(max(clipx, parent == null ? 0 : globalx) + clipw, (parent == null ? 0 : globalx) + width) - globalx;
440 cliph = min(max(clipy, parent == null ? 0 : globaly) + cliph, (parent == null ? 0 : globaly) + height) - globaly;
441 clipx = max(clipx, parent == null ? 0 : globalx);
442 clipy = max(clipy, parent == null ? 0 : globaly);
444 if (clipw <= 0 || cliph <= 0) return;
446 if (path == null && (fillcolor & 0xFF000000) != 0x00000000) {
447 VectorGraphics.VectorPath path2 = VectorGraphics.parseVectorPath("M0,0H" + width + "V" + height + "H0V0z");
448 path2.realize(a).fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
452 for(int x = globalx; x < clipx + clipw; x += image.getWidth())
453 for(int y = globaly; y < clipy + cliph; y += image.getHeight())
454 buf.drawPicture(image, x, y, clipx, clipy, clipx + clipw, clipy + cliph);
456 if (text != null && !text.equals("") && font != null) // FIXME
457 font.rasterizeGlyphs(text, buf, textcolor,
458 globalx, globaly, clipx, clipy, clipw + clipx, clipy + cliph,
459 new Scheduler.Task() { public void perform() {
467 if (rtransform == null) rpath = null;
468 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
470 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
471 rtransform = a.copy();
475 rpath = path.realize(a == null ? VectorGraphics.Affine.identity() : a);
477 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
478 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
481 for(Box b = getChild(0); b != null; b = b.nextSibling()) {
482 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
483 if (transform != null) a2.multiply(transform);
484 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));
486 b.render(globalx, globaly, clipx, clipy, clipw, cliph, buf, a2);
491 // Methods to implement org.xwt.js.JS //////////////////////////////////////
493 public Object callMethod(Object method, JS.Array args, boolean checkOnly) throws JS.Exn {
494 if ("indexof".equals(method)) {
495 if (checkOnly) return Boolean.TRUE;
496 if (args.length() != 1 || args.elementAt(0) == null || !(args.elementAt(0) instanceof Box)) return new Integer(-1);
497 Box b = (Box)args.elementAt(0);
498 if (b.parent != Box.this) {
499 if (redirect == null || redirect == Box.this) return new Integer(-1);
500 return redirect.callMethod(method, args, checkOnly);
502 return new Integer(b.getIndexInParent());
507 /** Returns the i_th child */
508 public Object get(int i) {
509 if (redirect == null) return null;
510 if (redirect != this) return redirect.get(i);
511 return i >= numChildren() || i < 0 ? null : getChild(i);
515 * Inserts value as child i; calls remove() if necessary.
516 * This method handles "reinserting" one of your children properly.
517 * INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
518 * WARNING: O(n) runtime, unless i == numChildren()
520 public void put(int i, Object value, TailCall tail) {
522 Trap t = value == null ? (Trap)get("childremoved", Trap.class) : (Trap)get("childadded", Trap.class);
524 if (value != null && !(value instanceof Box)) {
525 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to a non-box");
529 if (redirect == null) {
530 if (t != null) t.perform(value, tail);
531 else if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
532 } else if (redirect != this) {
533 Box b = value == null ? (Box)redirect.get(i) : (Box)value;
534 // FIXME: what if both of them want a tailcall?
535 redirect.put(i, value, tail);
536 if (t != null) t.perform(value, tail);
537 } else if (value == null) {
538 if (i >= 0 && i < numChildren()) {
541 if (t != null) t.perform(b, tail);
544 Box newnode = (Box)value;
546 // check if box being moved is currently target of a redirect
547 for(Box cur = newnode.parent; cur != null; cur = cur.parent)
548 if (cur.redirect == newnode) {
549 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
553 // check for recursive ancestor violation
554 for(Box cur = this; cur != null; cur = cur.parent)
555 if (cur == newnode) {
556 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
557 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
561 if (numKids > 15 && children == null) convert_to_array();
563 newnode.parent = this;
565 if (children == null) {
566 if (firstKid == null) {
568 newnode.prevSibling = newnode;
569 newnode.nextSibling = newnode;
570 } else if (i >= numKids) {
571 newnode.prevSibling = firstKid.prevSibling;
572 newnode.nextSibling = firstKid;
573 firstKid.prevSibling.nextSibling = newnode;
574 firstKid.prevSibling = newnode;
577 for(int j=0; j<i; j++) cur = cur.nextSibling;
578 newnode.prevSibling = cur.prevSibling;
579 newnode.nextSibling = cur;
580 cur.prevSibling.nextSibling = newnode;
581 cur.prevSibling = newnode;
582 if (i == 0) firstKid = newnode;
587 if (i >= children.size()) {
588 newnode.indexInParent = children.size();
589 children.addElement(newnode);
591 children.insertElementAt(newnode, i);
592 for(int j=i; j<children.size(); j++)
593 getChild(j).indexInParent = j;
597 // need both of these in case child was already uncalc'ed
600 MARK_FOR_REFLOW_this;
603 if (t != null) t.perform(b, tail);
607 public Object get(Object key, Object key2) { return super.get(key, key2); }
608 public void put2(Object key, Object key2, Object val) { super.put2(key, key2, val); }
610 public Object get_(Object name) { return super.get(name); }
611 public Object get(Object name) { return get(name, false); }
612 public Object get(Object name_, boolean ignoretraps) {
613 if (name_ instanceof Number) return get(((Number)name_).intValue());
615 if (!(name_ instanceof String)) return null;
616 String name = (String)name_;
617 if (name.equals("")) return null;
619 // See if we're triggering a trap
620 Trap t = ignoretraps ? (Trap)null : (Trap)get(name, Trap.class);
621 if (t != null) { t.perform(); return null; }
623 // Check for a special handler
624 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
625 if (gph != null) return gph.get(this);
627 Object ret = super.get(name);
628 if (name.startsWith("$") && ret == null)
629 if (Log.on) Log.logJS(this, "WARNING: attempt to access " + name + ", but no child with id=\"" +
630 name.substring(1) + "\" found");
634 public Object[] keys() {
635 Object[] ret = new Object[numChildren()];
636 for(int i=0; i<ret.length; i++) ret[i] = new Integer(i);
640 public void addTrap(Object name, Object value) { Trap.addTrap(this, name, ((JS.CompiledFunction)value)); }
641 public void delTrap(Object name, Object value) { Trap.delTrap(this, name, ((JS.CompiledFunction)value)); }
646 * @param ignoretraps if set, no traps will be triggered (set when 'cascade' reaches the bottom of the trap stack)
647 * @param rp if this put is being performed via a root proxy, rp is the root proxy.
649 public void put_(Object name, Object value) { super.put(name, value); }
650 public void put(Object name, Object value) { put(name, value, null, false); } // FIXME: correct?
651 public void put(Object name, Object value, TailCall tail) { put(name, value, tail, false); }
652 public void put(Object name_, Object value, TailCall tail, boolean ignoretraps) {
653 if (name_ instanceof Number) { put(((Number)name_).intValue(), value, tail); }
654 if (!(name_ instanceof String)) { super.put(name_,value); return; }
655 String name = name_.toString();
657 Trap t = (Trap)get(name, Trap.class);
658 if (t != null) { t.perform(value, tail); return; }
661 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
662 if (gph != null) { gph.put(name, this, value); return; }
664 super.put(name, value);
668 // Tree Manipulation /////////////////////////////////////////////////////////////////////
670 /** The parent of this node */
671 private Box parent = null;
673 // Variables used in Vector mode */
674 /** INVARIANT: if (parent != null) parent.children.elementAt(indexInParent) == this */
675 private int indexInParent;
676 private Vec children = null;
678 // Variables used in linked-list mode
679 private int numKids = 0;
680 private Box nextSibling = null;
681 private Box prevSibling = null;
682 private Box firstKid = null;
684 // when we get more than 15 children, we switch to array-mode
685 private void convert_to_array() {
686 children = new Vec(numKids);
689 children.addElement(cur);
690 cur.indexInParent = children.size() - 1;
691 cur = cur.nextSibling;
692 } while (cur != firstKid);
695 /** remove this node from its parent; INVARIANT: whenever the parent of a node is changed, remove() gets called. */
696 public void remove() {
697 if (parent == null) {
698 if (surface != null) surface.dispose(true);
701 Box oldparent = parent;
702 if (oldparent == null) return;
703 MARK_FOR_REFLOW_this;
705 flags &= ~MOUSEINSIDE_FLAG;
707 if (parent.children != null) {
708 parent.children.removeElementAt(indexInParent);
709 for(int j=indexInParent; j<parent.children.size(); j++)
710 (parent.getChild(j)).indexInParent = j;
713 if (parent.firstKid == this) {
714 if (nextSibling == this) parent.firstKid = null;
715 else parent.firstKid = nextSibling;
718 prevSibling.nextSibling = nextSibling;
719 nextSibling.prevSibling = prevSibling;
725 if (oldparent != null) { Box b = oldparent; MARK_FOR_REFLOW_b; }
727 // note that JavaScript box[0] will invoke put(int i), not put(String s)
728 if (oldparent != null) {
729 Trap t = (Trap)oldparent.get("childremoved", Trap.class);
732 //if (t != null) t.perform(this, tail);
736 /** returns our next sibling (parent[ourindex + 1]) */
737 public final Box nextSibling() {
738 if (parent == null) return null;
739 if (parent.children == null) {
740 if (nextSibling == parent.firstKid) return null;
743 if (indexInParent >= parent.children.size() - 1) return null;
744 return (Box)parent.children.elementAt(indexInParent + 1);
748 /** returns our next sibling (parent[ourindex + 1]) */
749 public final Box prevSibling() {
750 if (parent == null) return null;
751 if (parent.children == null) {
752 if (this == parent.firstKid) return null;
755 if (indexInParent == 0) return null;
756 return (Box)parent.children.elementAt(indexInParent - 1);
760 /** Returns the parent of this node */
761 public Box getParent() { return parent; }
763 /** Returns ith child */
764 public Box getChild(int i) {
765 if (children == null) {
766 if (firstKid == null) return null;
767 if (i >= numKids) return null;
768 if (i == numKids - 1) return firstKid.prevSibling;
770 for(int j=0; j<i; j++) cur = cur.nextSibling;
773 if (i >= children.size() || i < 0) return null;
774 return (Box)children.elementAt(i);
778 /** Returns the number of children */
779 public int numChildren() {
780 if (children == null) {
781 if (firstKid == null) return 0;
783 for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
786 return children.size();
790 /** Returns our index in our parent */
791 public int getIndexInParent() {
792 if (parent == null) return 0;
793 if (parent.children == null) {
795 for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
798 return indexInParent;
802 /** returns the root of the surface that this box belongs to */
803 public final Box getRoot() {
804 if (parent == null && surface != null) return this;
805 if (parent == null) return null;
806 return parent.getRoot();
809 public void recompute_font() {
810 if (text == null) { textwidth = textheight = 0; return; }
811 if (font == null) { /* FIXME */ return; }
812 long widthheight = font.rasterizeGlyphs(text, null, textcolor, 0, 0, 0, 0, 0, 0,
813 new Scheduler.Task() { public void perform() {
819 textwidth = (int)((widthheight & 0xffff0000) >> 16);
820 textheight = (int)(widthheight & 0x0000ffff);
821 MARK_FOR_REFLOW_this;
825 // Trivial Helper Method s(should be inlined) /////////////////////////////////////////
827 static final int min(int a, int b) { if (a<b) return a; else return b; }
828 static final float min(float a, float b) { if (a<b) return a; else return b; }
829 static final double min(double a, double b) { if (a<b) return a; else return b; }
830 static final int max(int a, int b) { if (a>b) return a; else return b; }
831 static final float max(float a, float b) { if (a>b) return a; else return b; }
832 static final 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; }
833 static final 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; }
834 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
835 final boolean inside(int x, int y) { return (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
837 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
838 public static Box whoIs(Box cur, int x, int y) {
840 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
844 // WARNING: this method is called from the event-queueing
845 // thread -- it may run concurrently with ANY part of XWT, and
846 // is UNSYNCHRONIZED for performance reasons. BE CAREFUL
849 if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
850 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
852 for(int i=cur.numChildren() - 1; i>=0; i--) {
853 Box child = cur.getChild(i);
854 if (child == null) continue; // since this method is unsynchronized, we have to double-check
857 if (!((child.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
867 * A helper class for properties of Box which require special
870 * To avoid excessive use of String.equals(), the Box.get() and
871 * Box.put() methods employ a Hash keyed on property names that
872 * require special handling. The value stored in the Hash is an
873 * instance of an anonymous subclass of SpecialBoxProperty, which knows
874 * how to handle get()s and put()s for that property name. There
875 * should be one anonymous subclass of SpecialBoxProperty for each
876 * specially-handled property on Box.
878 static class SpecialBoxProperty {
880 SpecialBoxProperty() { }
882 /** stores instances of SpecialBoxProperty; keyed on property name */
883 static Hash specialBoxProperties = new Hash(200, 3);
885 /** this method defines the behavior when the property is get()ed from b */
886 Object get(Box b) { return null; }
888 /** this method defines the behavior when the property is put() to b */
889 void put(Box b, Object value) { }
891 /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
892 void put(String name, Box b, Object value) { put(b, value); }
895 specialBoxProperties.put("fill", new ColorBoxProperty() {
896 public void put(final Box b, final Object value) {
897 if (value == null || !(value instanceof Res)) super.put(b, value);
899 Callback callback = new Callback() { public Object call(Object pic) {
900 b.image = (Picture)pic;
901 b.minwidth = b.image.getWidth();
902 b.minheight = b.image.getHeight();
907 Picture pic = Picture.fromRes((Res)value, callback);
908 if (pic != null) callback.call(pic);
911 public int getColor(Box b) { return b.fillcolor; }
912 public void putColor(Box b, int argb) { b.fillcolor = argb; }
914 specialBoxProperties.put("textcolor", new ColorBoxProperty() {
915 public int getColor(Box b) { return b.textcolor; }
916 public void putColor(Box b, int argb) { b.textcolor = argb; }
918 specialBoxProperties.put("strokecolor", new ColorBoxProperty() {
919 public int getColor(Box b) { return b.strokecolor; }
920 public void putColor(Box b, int argb) { b.strokecolor = argb; }
923 specialBoxProperties.put("text", new SpecialBoxProperty() {
924 public Object get(Box b) { return b.text; }
925 public void put(Box b, Object value) {
926 String t = value == null ? "null" : value.toString();
927 if (t.equals(b.text)) return;
933 specialBoxProperties.put("path", new SpecialBoxProperty() {
934 public Object get(Box b) { throw new JS.Exn("cannot read from the path property"); }
935 public void put(Box b, Object value) {
936 String t = value == null ? "null" : value.toString();
937 b.path = value == null ? null : VectorGraphics.parseVectorPath(value.toString());
942 specialBoxProperties.put("transform", new SpecialBoxProperty() {
943 public void put(Box b, Object value) {
944 String t = value.toString().trim();
945 b.transform = VectorGraphics.Affine.identity();
946 while (t.length() > 0) {
947 if (t.startsWith("skewX(")) {
950 } else if (t.startsWith("shear(")) {
951 // FIXME: nonstandard; remove this
952 b.transform.multiply(VectorGraphics.Affine.shear(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
954 } else if (t.startsWith("skewY(")) {
957 } else if (t.startsWith("rotate(")) {
958 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
959 if (sub.indexOf(',') != -1) {
960 float angle = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
961 sub = sub.substring(sub.indexOf(',') + 1);
962 float cx = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
963 sub = sub.substring(sub.indexOf(',') + 1);
964 float cy = Float.parseFloat(sub);
965 b.transform.multiply(VectorGraphics.Affine.translate(cx, cy));
966 b.transform.multiply(VectorGraphics.Affine.rotate(angle));
967 b.transform.multiply(VectorGraphics.Affine.translate(-1 * cx, -1 * cy));
969 b.transform.multiply(VectorGraphics.Affine.rotate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
972 } else if (t.startsWith("translate(")) {
973 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
974 if (sub.indexOf(',') > -1) {
975 b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
976 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
978 b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))), 0));
981 } else if (t.startsWith("flip(")) {
982 String which = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
983 b.transform.multiply(VectorGraphics.Affine.flip(which.equals("horizontal"), which.equals("vertical")));
985 } else if (t.startsWith("scale(")) {
986 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
987 if (sub.indexOf(',') > -1) {
988 b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
989 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
991 b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
992 Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(',')))));
995 } else if (t.startsWith("matrix(")) {
996 // FIXME: is this mapped right?
997 float d[] = new float[6];
998 StringTokenizer st = new StringTokenizer(t, ",", false);
999 for(int i=0; i<6; i++)
1000 d[i] = Float.parseFloat(st.nextToken());
1001 b.transform.multiply(new VectorGraphics.Affine(d[0], d[1], d[2], d[3], d[4], d[5]));
1003 t = t.substring(t.indexOf(')') + 1).trim();
1008 public Object get(Box b) { return b.transform.toString(); }
1011 specialBoxProperties.put("font", new SpecialBoxProperty() {
1012 public Object get(Box b) { return b.font; }
1013 public void put(Box b, Object value) {
1014 // FIXME: translate value into a resource if it is a string
1015 b.font = value == null ? null :
1016 Font.getFont((Res)value, b.font == null ? 10 : b.font.pointsize); // FIXME
1018 b.flags |= FONT_CHANGED_FLAG;
1023 specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
1024 public Object get(Box b) { return b.font; }
1025 public void put(Box b, Object value) {
1026 if (b.font != null && b.font.pointsize == stoi(value)) return;
1027 b.font = value == null ? null :
1028 Font.getFont(b.font == null ? null : b.font.res, stoi(value)); // FIXME
1030 b.flags |= FONT_CHANGED_FLAG;
1035 specialBoxProperties.put("strokewidth", new SpecialBoxProperty() {
1036 public Object get(Box b) { return new Integer(b.strokewidth); }
1037 public void put(Box b, Object value) {
1038 if (b.strokewidth == stoi(value)) return;
1039 b.strokewidth = stoi(value);
1043 specialBoxProperties.put("align", new SpecialBoxProperty() {
1044 public Object get(Box b) {
1045 switch(b.flags & ALIGN_FLAGS) {
1046 case (ALIGN_TOP_FLAG | ALIGN_LEFT_FLAG): return "topleft";
1047 case (ALIGN_BOTTOM_FLAG | ALIGN_LEFT_FLAG): return "bottomleft";
1048 case (ALIGN_TOP_FLAG | ALIGN_RIGHT_FLAG): return "topright";
1049 case (ALIGN_BOTTOM_FLAG | ALIGN_RIGHT_FLAG): return "bottomright";
1050 case ALIGN_TOP_FLAG: return "top";
1051 case ALIGN_BOTTOM_FLAG: return "bottom";
1052 case ALIGN_LEFT_FLAG: return "left";
1053 case ALIGN_RIGHT_FLAG: return "right";
1054 case 0: return "center";
1055 default: throw new Error("invalid alignment flags: " + (b.flags & ALIGN_FLAGS));
1058 public void put(Box b, Object value) {
1059 b.flags &= ~ALIGN_FLAGS;
1060 if (value == null || value.equals("center")) { b.flags &= ALIGN_FLAGS; }
1061 else if (value.equals("topleft")) { b.flags |= ALIGN_TOP_FLAG | ALIGN_LEFT_FLAG; }
1062 else if (value.equals("bottomleft")) { b.flags |= ALIGN_BOTTOM_FLAG | ALIGN_LEFT_FLAG; }
1063 else if (value.equals("topright")) { b.flags |= ALIGN_TOP_FLAG | ALIGN_RIGHT_FLAG; }
1064 else if (value.equals("bottomright")) { b.flags |= ALIGN_BOTTOM_FLAG | ALIGN_RIGHT_FLAG; }
1065 else if (value.equals("top")) { b.flags |= ALIGN_TOP_FLAG; }
1066 else if (value.equals("bottom")) { b.flags |= ALIGN_BOTTOM_FLAG; }
1067 else if (value.equals("left")) { b.flags |= ALIGN_LEFT_FLAG; }
1068 else if (value.equals("right")) { b.flags |= ALIGN_RIGHT_FLAG; }
1069 else Log.logJS("invalid alignment specifier \"" + value + "\"");
1074 specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
1075 public Object get(Box b) { return b; }
1076 public void put(Box b, Object value) {
1077 if (value == null) b.remove();
1078 else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
1082 specialBoxProperties.put("orient", new SpecialBoxProperty() {
1083 public Object get(Box b) {
1084 Log.log(this, "warning: the orient property is deprecated");
1085 if (b.redirect == null) return "horizontal";
1086 else if (b.redirect != b) return get(b.redirect);
1087 else if (b.cols == 1) return "vertical";
1088 else if (b.rows == 1) return "horizontal";
1091 public void put(Box b, Object value) {
1092 Log.log(this, "warning: the orient property is deprecated");
1093 if (value == null) return;
1094 if (b.redirect == null) return;
1095 if (b.redirect != b) { put(b.redirect, value); return; }
1096 if (value.equals("vertical")) {
1097 if (b.rows == 0) return;
1098 b.rows = 0; b.cols = 1;
1099 } else if (value.equals("horizontal")) {
1100 if (b.cols == 0) return;
1101 b.cols = 0; b.rows = 1;
1103 Log.log(this, "invalid value put to orient property: " + value);
1107 specialBoxProperties.put("shrink", new SpecialBoxProperty() {
1108 public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
1109 public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
1112 //#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
1113 specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
1114 public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
1115 public void put(Box b, Object value) {
1116 boolean newshrink = stob(value);
1117 if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
1118 if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
1125 specialBoxProperties.put("x", new SpecialBoxProperty() {
1126 public Object get(Box b) {
1127 if (b.surface == null) return new Integer(0);
1128 if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
1129 return new Integer(b.x);
1131 public void put(Box b, Object value) {
1132 if (!((b.flags & NOTPACKED_FLAG) != 0) && (b.parent != null || b.surface == null)) return;
1133 int x = stoi(value);
1134 if (x == b.x) return;
1137 if (b.parent == null && b.surface != null) b.surface.setLocation();
1144 //#repeat width/height height/width minwidth/minheight maxwidth/maxheight true/false
1145 specialBoxProperties.put("width", new SpecialBoxProperty() {
1146 public Object get(Box b) { return new Integer(b.width); }
1147 public void put(Box b, Object value) {
1148 int newval = stoi(value);
1149 if (b.parent == null && b.surface != null) {
1150 // hack to circumvent #repeat
1151 int other = b.height;
1152 if (true) b.surface.setSize(newval, other);
1153 else b.surface.setSize(other, newval);
1156 if (b.minwidth == newval && b.maxwidth == newval) return;
1157 b.minwidth = b.maxwidth = newval;
1163 //#repeat cols/rows rows/cols
1164 specialBoxProperties.put("cols", new SpecialBoxProperty() {
1165 public Object get(Box b) { return new Double(b.cols); }
1166 public void put(Box b, Object value) {
1167 if (b.cols == stoi(value)) return;
1168 b.cols = stoi(value);
1169 if (b.cols == 0 && b.rows == 0) b.rows = 1;
1170 if (b.cols != 0 && b.rows != 0) b.rows = 0;
1175 //#repeat colspan/rowspan
1176 specialBoxProperties.put("colspan", new SpecialBoxProperty() {
1177 public Object get(Box b) { return new Double(b.colspan); }
1178 public void put(Box b, Object value) {
1179 if (b.colspan == stoi(value)) return;
1180 b.colspan = stoi(value);
1186 specialBoxProperties.put("noclip", new SpecialBoxProperty() {
1187 public Object get(Box b) { return ((b.flags & NOCLIP_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1188 public void put(Box b, Object value) {
1189 if (((b.flags & NOCLIP_FLAG) != 0) == stob(value)) return;
1190 if (stob(value)) b.flags |= NOCLIP_FLAG; else b.flags &= ~NOCLIP_FLAG;
1195 specialBoxProperties.put("visible", new SpecialBoxProperty() {
1196 public Object get(Box b) {
1197 for (Box cur = b; cur != null; cur = cur.parent) {
1198 if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.FALSE; }
1199 return Boolean.TRUE;
1201 public void put(Box b, Object value) {
1202 if (!stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
1203 if (!stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
1204 if (b.parent == null) {
1205 if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
1208 MARK_FOR_REFLOW_b_parent;
1209 b.parent.dirty(b.x, b.y, b.width, b.height);
1213 specialBoxProperties.put("packed", new SpecialBoxProperty() {
1214 public Object get(Box b) { return ((b.flags & NOTPACKED_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1215 public void put(Box b, Object value) {
1216 if (stob(value) == ((b.flags & NOTPACKED_FLAG) == 0)) return;
1217 if (!stob(value)) b.flags |= NOTPACKED_FLAG; else b.flags &= ~NOTPACKED_FLAG;
1218 if ((b.flags & NOTPACKED_FLAG) != 0) { b.x = 0; b.y = 0; }
1219 if (b.parent != null) MARK_FOR_REFLOW_b_parent;
1222 //#repeat globalx/globaly x/y
1223 specialBoxProperties.put("globalx", new SpecialBoxProperty() {
1224 public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
1225 public void put(Box b, Object value) {
1226 if (b.surface == null || b.parent == null) return;
1227 b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
1233 specialBoxProperties.put("cursor", new SpecialBoxProperty() {
1234 public Object get(Box b) { return b.cursor; }
1235 public void put(Box b, Object value) {
1236 b.cursor = (String)value;
1237 if (b.surface == null) return;
1239 // see if we need to update the surface cursor
1240 Surface surface = b.getRoot().surface;
1241 String tempcursor = surface.cursor;
1242 b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
1243 if (surface.cursor != tempcursor) surface.syncCursor();
1247 //#repeat mousex/mousey x/y
1248 specialBoxProperties.put("mousex", new SpecialBoxProperty() {
1249 public Object get(Box b) {
1250 Surface surface = b.getRoot().surface;
1251 if (surface == null) return new Integer(0);
1252 int mousex = surface.mousex;
1253 for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
1254 return new Integer(mousex);
1259 specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
1260 public Object get(Box b) {
1261 return ((b.flags & MOUSEINSIDE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1264 specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
1265 public Object get(Box b) {
1266 if (b.redirect == null) return new Integer(0);
1267 if (b.redirect != b) return get(b.redirect);
1268 return new Integer(b.numChildren());
1271 SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
1272 public void put(String name, Box b, Object value) {
1273 Surface surface = b.getRoot().surface;
1274 if (surface == null) return;
1275 int mousex = surface.mousex;
1276 int mousey = surface.mousey;
1277 for(Box c = b.parent; c != null && c.parent != null; c = c.parent) {
1281 for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
1282 if (c.inside(mousex - c.x, mousey - c.y)) {
1287 if (b.parent != null) b.parent.put(name, value);
1290 specialBoxProperties.put("Press1", mouseEventHandler);
1291 specialBoxProperties.put("Press2", mouseEventHandler);
1292 specialBoxProperties.put("Press3", mouseEventHandler);
1293 specialBoxProperties.put("Release1", mouseEventHandler);
1294 specialBoxProperties.put("Release2", mouseEventHandler);
1295 specialBoxProperties.put("Release3", mouseEventHandler);
1296 specialBoxProperties.put("Click1", mouseEventHandler);
1297 specialBoxProperties.put("Click2", mouseEventHandler);
1298 specialBoxProperties.put("Click3", mouseEventHandler);
1299 specialBoxProperties.put("DoubleClick1", mouseEventHandler);
1300 specialBoxProperties.put("DoubleClick2", mouseEventHandler);
1301 specialBoxProperties.put("DoubleClick3", mouseEventHandler);
1303 specialBoxProperties.put("root", new SpecialBoxProperty() {
1304 public void put(Box b, Object value) {
1305 if (stob(value)) b.flags |= ISROOT_FLAG;
1306 else b.flags &= ~ISROOT_FLAG;
1308 public Object get(Box b) {
1309 if (b.parent == null || ((b.flags & ISROOT_FLAG) != 0)) return b;
1310 else return get(b.parent);
1313 specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
1314 public Object get(Box b) {
1315 if (b.parent == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
1318 public void put(Box b, Object value) {
1319 if (b.surface == null) return;
1320 boolean val = stob(value);
1321 if (b.parent == null && b.surface.minimized != val) b.surface.setMinimized(val);
1325 specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
1326 public Object get(Box b) {
1327 if (b.parent == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
1330 public void put(Box b, Object value) {
1331 if (b.surface == null) return;
1332 boolean val = stob(value);
1333 if (b.parent == null && b.surface.maximized != val) b.surface.setMaximized(val);
1337 specialBoxProperties.put("toback", new SpecialBoxProperty() {
1338 public void put(Box b, Object value) {
1339 if (b.parent == null && stob(value) && b.surface != null) b.surface.toBack();
1343 specialBoxProperties.put("tofront", new SpecialBoxProperty() {
1344 public void put(Box b, Object value) {
1345 if (b.parent == null && stob(value) && b.surface != null) b.surface.toFront();
1349 specialBoxProperties.put("Close", new SpecialBoxProperty() {
1350 public void put(Box b, Object value) {
1351 if (b.parent == null && b.surface != null) b.surface.dispose(true);
1355 // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
1356 specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
1357 specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
1358 specialBoxProperties.put("PosChange", new SpecialBoxProperty());
1359 specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
1361 //#repeat minwidth/minheight maxwidth/maxheight
1362 specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
1363 public Object get(Box b) { return new Integer(b.minwidth); }
1364 public void put(Box b, Object value) {
1365 if (stoi(value) == b.minwidth) return;
1366 b.minwidth = stoi(value);
1370 specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
1371 public Object get(Box b) { return new Integer(b.maxwidth); }
1372 public void put(Box b, Object value) {
1373 if (stoi(value) == b.maxwidth) return;
1374 b.maxwidth = stoi(value);
1380 specialBoxProperties.put("redirect", new SpecialBoxProperty() {
1381 public void put(Box b, Object value) {
1382 if (b.redirect != b) Log.log(this, "cannot change the redirect of a box once it is set");
1383 else if (value == null) b.redirect = null;
1385 Box b2 = (Box)value;
1386 while(b2 != b && b2 != null) b2 = b2.parent;
1387 if (b2 == null) Log.log(this, "a box's redirect must be one of its descendants");
1388 b.redirect = (Box)value;
1391 public Object get(Box b) {
1392 if (b.redirect == null) return null;
1393 if (b.redirect == b) return Boolean.TRUE;
1394 return get(b.redirect);
1398 // FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
1399 specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
1400 public void put(Box b, Object value) {
1401 if (b.surface != null) b.surface.setTitleBarText(value.toString());
1402 b.put_("titlebar", value);
1404 public Object get(Box b) { return b.get_("titlebar"); }
1407 specialBoxProperties.put("icon", new SpecialBoxProperty() {
1410 public void put(Box b, Object value) {
1411 b.put_("icon", value);
1412 if (b.surface == null) return;
1413 Picture pic = ImageDecoder.getPicture(value.toString());
1414 if (pic != null) b.surface.setIcon(pic);
1415 else if (Log.on) Log.log(this, "unable to load icon " + value);
1417 public Object get(Box b) { return b.get_("icon"); }
1422 private static abstract class ColorBoxProperty extends SpecialBoxProperty {
1423 public abstract int getColor(Box b);
1424 public abstract void putColor(Box b, int argb);
1425 public Object get(Box b) {
1426 if ((getColor(b) & 0xFF000000) == 0) return null;
1427 String red = Integer.toHexString((getColor(b) & 0x00FF0000) >> 16);
1428 String green = Integer.toHexString((getColor(b) & 0x0000FF00) >> 8);
1429 String blue = Integer.toHexString(getColor(b) & 0x000000FF);
1430 if (red.length() < 2) red = "0" + red;
1431 if (blue.length() < 2) blue = "0" + blue;
1432 if (green.length() < 2) green = "0" + green;
1433 return "#" + red + green + blue;
1435 public void put(Box b, Object value) {
1436 int newcolor = getColor(b);
1437 String s = value == null ? null : value.toString();
1438 if (value == null) newcolor = 0x00000000;
1439 else if (s.length() > 0 && s.charAt(0) == '#')
1441 newcolor = 0xFF000000 |
1442 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
1443 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
1444 Integer.parseInt(s.substring(5, 7), 16);
1445 } catch (NumberFormatException e) {
1446 Log.log(this, "invalid color " + s);
1449 else if (org.xwt.translators.SVG.colors.get(s) != null)
1450 newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
1451 if (newcolor == getColor(b)) return;
1452 putColor(b, newcolor);
1458 /** helper that converts a String to a boolean according to JavaScript coercion rules */
1459 public static boolean stob(Object o) {
1460 if (o == null) return false;
1461 return Boolean.TRUE.equals(o) || "true".equals(o);
1464 /** helper that converts a String to an int according to JavaScript coercion rules */
1465 public static int stoi(Object o) {
1466 if (o == null) return 0;
1467 if (o instanceof Integer) return ((Integer)o).intValue();
1470 if (!(o instanceof String)) s = o.toString();
1473 try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
1474 catch (NumberFormatException e) { return 0; }