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 int MOUSEINSIDE_FLAG = 0x00000001;
88 static int INVISIBLE_FLAG = 0x00000002;
89 static int NOTPACKED_FLAG = 0x00000004;
90 static int HSHRINK_FLAG = 0x00000008;
91 static int VSHRINK_FLAG = 0x00000010;
92 static int TILE_FLAG = 0x00000020;
93 static int FONT_CHANGED_FLAG = 0x00000040; // set when font changes, cleared during repack
94 static int ISROOT_FLAG = 0x00000080;
95 static int NOCLIP_FLAG = 0x00000100;
98 // Geometry ////////////////////////////////////////////////////////////////////////////
100 // xwt can be compiled with 16-bit lengths to save memory on small devices
102 //#define MAX_LENGTH Integer.MAX_VALUE
103 //#define MIN_LENGTH Integer.MIN_VALUE
105 // always correct (set directly by user)
106 public LENGTH minwidth = 0;
107 public LENGTH minheight = 0;
108 public LENGTH maxwidth = MAX_LENGTH;
109 public LENGTH maxheight = MAX_LENGTH;
110 private String text = null;
111 private Res font = null;
112 private int fontsize = 10;
113 private LENGTH textwidth = 0;
114 private LENGTH textheight = 0;
116 // FEATURE: use shorts
117 private int rows = 1;
118 private int cols = 0;
119 private int rowspan = 1;
120 private int colspan = 1;
122 // computed during reflow
125 public LENGTH width = 0;
126 public LENGTH height = 0;
127 private int row = 0; // FEATURE use a short
128 private int col = 0; // FEATURE use a short
129 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
130 private LENGTH contentheight = 0;
131 private LENGTH offset_x = 0;
132 private LENGTH offset_y = 0;
135 // Rendering Properties ///////////////////////////////////////////////////////////
137 private VectorGraphics.VectorPath path = null;
138 private VectorGraphics.Affine transform = null;
140 private VectorGraphics.RasterPath rpath = null;
141 private VectorGraphics.Affine rtransform = null;
143 //private VectorGraphics.Paint fill = null;
144 //private VectorGraphics.Paint stroke = null;
147 public Picture image; // will disappear
148 private int fillcolor = 0x00000000; // will become VectorGraphics.Paint
149 private int strokecolor = 0xFF000000; // will become VectorGraphics.Paint
150 private int textcolor = 0xFF000000; // will become VectorGraphics.Paint
152 private String cursor = null; // the cursor for this box
155 // Instance Methods /////////////////////////////////////////////////////////////////////
157 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
158 public final void dirty() {
159 if ((flags & NOCLIP_FLAG) != 0 && parent != null) parent.dirty();
160 else dirty(0, 0, width, height);
162 public final void dirty(int x, int y, int w, int h) {
163 for(Box cur = this; cur != null; cur = cur.parent) {
164 if ((flags & NOCLIP_FLAG) == 0) {
165 w = min(x + w, cur.width) - max(x, 0);
166 h = min(y + h, cur.height) - max(y, 0);
170 if (w <= 0 || h <= 0) return;
171 if (cur.parent == null && cur.surface != null) cur.surface.dirty(x, y, w, h);
178 * Given an old and new mouse position, this will update <tt>mouseinside</tt> and check
179 * to see if this node requires any Enter, Leave, or Move notifications.
181 * @param forceleave set to true by the box's parent if the mouse is inside an older
182 * sibling, which is covering up this box.
184 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
185 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
187 boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
188 boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
189 if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
191 if (!wasinside && !isinside) return;
193 if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
194 else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
195 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
196 put("Move", Boolean.TRUE);
198 if (isinside && cursor != null) getRoot().cursor = cursor;
200 // if the mouse has moved into our padding region, it is considered 'outside' all our children
201 if (!(mousex >= 0 && mousey >= 0 && mousex < width && mousey < height)) forceleave = true;
203 for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
204 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
205 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
210 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
212 void reflow() { reflow(width, height); }
213 void reflow(int new_width, int new_height) {
215 if (Surface.abort) return;
216 resize(x, y, new_width, new_height);
219 /** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
221 if (!needs_reflow) return;
222 contentwidth = contentheight = 0;
224 // --- Phase 0 ----------------------------------------------------------------------
226 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
227 if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
228 child.flags |= FONT_CHANGED_FLAG;
229 child.needs_reflow = true;
232 if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
234 flags &= ~FONT_CHANGED_FLAG;
236 // --- Phase 1 ----------------------------------------------------------------------
237 // assign children to their row/column positions (assuming constrained columns)
238 if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
239 //#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 contentwidth/contentheight colMaxWidth/rowMaxHeight OUTER/OUTER2 INNER/INNER2
240 if (rows == 0 && numChildren() != 0) {
241 int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
242 Box child = getChild(0);
243 for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
244 OUTER: for(int row=0; child != null; row++) {
245 for(int col=0; child != null && col < cols;) {
246 INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
247 while(col < cols && numRowsInCol[col] > row) col++;
248 for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
249 if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
252 if (col + min(cols, child.colspan) > cols) break;
253 for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
256 col += min(cols, child.colspan);
257 child = child.nextSibling();
258 for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
264 // --- Phase 2 ----------------------------------------------------------------------
265 // compute the min/max sizes of the columns and rows and set our contentwidth
266 if (numChildren() != 0) {
267 //#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
270 for(Box child = getChild(0); child != null; child = child.nextSibling())
271 numCols = max(numCols, child.col + child.colspan);
272 LENGTH[] colWidth = new LENGTH[numCols];
273 for(Box child = getChild(0); child != null; child = child.nextSibling())
274 if (!(((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
275 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
276 for(int col=0; col<numCols; col++) contentwidth += colWidth[col];
277 contentwidth = max(textwidth, contentwidth);
278 contentwidth = bound(minwidth, contentwidth, maxwidth);
283 if ((flags & NOTPACKED_FLAG) == 0) {
285 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
286 if ((flags & HSHRINK_FLAG) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
287 if ((flags & VSHRINK_FLAG) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
288 // FIXME: separate offset_x needed for the path
290 //#repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
291 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
292 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
293 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
294 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
295 int left = min(min(x1, x2), min(x3, x4));
296 int right = max(max(x1, x2), max(x3, x4));
297 contentwidth = max(contentwidth, right - left);
298 offset_x = -1 * left;
304 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
306 // --- Phase 1 ----------------------------------------------------------------------
307 // run PosChange/SizeChange, dirty as needed
308 if (x != this.x || y != this.y || width != this.width || height != this.height) {
309 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
310 boolean sizechange = false, poschange = false;
311 if ((this.width != width || this.height != height) && get("SizeChange", Trap.class) != null) sizechange = true;
312 if ((this.x != x || this.y != y) && get("PosChange", Trap.class) != null) poschange = true;
313 this.width = width; this.height = height; this.x = x; this.y = y;
315 if (sizechange || poschange)
316 if (sizePosChangesSinceLastRender == 500) {
317 if (Log.on) Log.logJS(this, "Warning, more than 500 SizeChange/PosChange traps triggered since last complete render");
319 sizePosChangesSinceLastRender++;
320 try { if (sizechange) put("SizeChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
321 try { if (poschange) put("PosChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
322 Surface.abort = true;
328 // --- short circuit ----------------------------------------------------------------
329 if (!needs_reflow) return;
330 needs_reflow = false;
331 if (numChildren() == 0) return;
333 // --- Phase 2 ----------------------------------------------------------------------
334 // compute the min/max sizes of the columns and rows and set initial width/height to minimums
336 //#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
339 for(Box child = getChild(0); child != null; child = child.nextSibling())
340 numCols = max(numCols, child.col + child.colspan);
341 LENGTH[] colWidth = new LENGTH[numCols];
342 LENGTH[] colMaxWidth = new LENGTH[numCols];
343 int marginWidth = width;
344 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = -1;
347 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
348 if (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)) continue;
349 //#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
350 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
351 for(int i=child.col; i<child.col+child.colspan && i<numCols; i++)
352 colMaxWidth[i] = max(colMaxWidth[i], (((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) / child.colspan);
356 //#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
357 for(int i=0; i<colMaxWidth.length; i++) if (colMaxWidth[i] == -1) colMaxWidth[i] = MAX_LENGTH;
359 for(int i=0; i<colMaxWidth.length; i++) {
360 if (colMaxWidth[i] == MAX_LENGTH) { marginWidth = 0; break; }
361 marginWidth -= colMaxWidth[i];
362 if (marginWidth < 0) { marginWidth = 0; break; }
367 // --- Phase 3 ----------------------------------------------------------------------
368 // hand out the slack
370 //#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
372 for(int i=0; i<numCols; i++) slack -= colWidth[i];
373 if (numChildren() > 0)
375 // FEATURE: inefficient
376 int startslack = slack;
377 int increment = max(1, slack / numCols);
378 for(int col=0; col < numCols && slack > 0; col++) {
379 slack += colWidth[col];
380 colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
381 slack -= colWidth[col];
383 if (slack == startslack) break;
388 // --- Phase 4 ----------------------------------------------------------------------
389 // assign children's new sizes and positions and recurse
390 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
391 if ((child.flags & INVISIBLE_FLAG) != 0) continue;
392 int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
393 if ((child.flags & NOTPACKED_FLAG) != 0) {
396 child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x);
397 child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y);
400 //#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
401 child_width = 0; for(int i=child.col; i<child.col+child.colspan && i<colWidth.length; i++) child_width += colWidth[i];
402 diff = bound(child.contentwidth, child_width, ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) - child_width;
403 if (transform == null) child_x = marginWidth / 2;
404 for(int i=0; i<child.col; i++) child_x += colWidth[i];
405 if (diff < 0) child_x += -1 * (diff / 2);
409 child.resize(child_x, child_y, child_width, child_height);
416 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
418 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
419 void render(int parentx, int parenty, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf, VectorGraphics.Affine a) {
420 if (Surface.abort || (flags & INVISIBLE_FLAG) != 0) return;
421 int globalx = parentx + (parent == null ? 0 : x);
422 int globaly = parenty + (parent == null ? 0 : y);
424 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
425 if ((flags & NOCLIP_FLAG) == 0) {
426 clipw = min(max(clipx, parent == null ? 0 : globalx) + clipw, (parent == null ? 0 : globalx) + width) - globalx;
427 cliph = min(max(clipy, parent == null ? 0 : globaly) + cliph, (parent == null ? 0 : globaly) + height) - globaly;
428 clipx = max(clipx, parent == null ? 0 : globalx);
429 clipy = max(clipy, parent == null ? 0 : globaly);
431 if (clipw <= 0 || cliph <= 0) return;
433 if (path == null && (fillcolor & 0xFF000000) != 0x00000000) {
434 VectorGraphics.VectorPath path2 = VectorGraphics.parseVectorPath("M0,0H" + width + "V" + height + "H0V0z");
435 path2.realize(a).fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
439 if ((flags & TILE_FLAG) != 0) renderTiledImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
440 else renderStretchedImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
442 if (text != null && !text.equals(""))
443 renderText(globalx, globaly, clipx, clipy, clipw, cliph, buf);
446 if (rtransform == null) rpath = null;
447 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
449 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
450 rtransform = a.copy();
454 rpath = path.realize(a == null ? VectorGraphics.Affine.identity() : a);
456 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
457 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
460 for(Box b = getChild(0); b != null; b = b.nextSibling()) {
461 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
462 if (transform != null) a2.multiply(transform);
463 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));
465 b.render(globalx, globaly, clipx, clipy, clipw, cliph, buf, a2);
469 void renderStretchedImage(int globalx, int globaly, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
471 buf.drawPicture(image, clipx, clipy, clipx + clipw, clipy + cliph, 0, 0, image.getWidth(), image.getHeight());
474 void renderTiledImage(int globalx, int globaly, int x, int y, int w, int h, PixelBuffer buf) {
475 int iw = image.getWidth();
476 int ih = image.getHeight();
477 for(int i=(x - x)/iw; i <= (x + w - x)/iw; i++) {
478 for(int j=(y - y)/ih; j<= (y + h - y)/ih; j++) {
480 int dx1 = max(i * iw + x, x);
481 int dy1 = max(j * ih + y, y);
482 int dx2 = min((i+1) * iw + x, x + w);
483 int dy2 = min((j+1) * ih + y, y + h);
485 int sx1 = dx1 - (i*iw) - x;
486 int sy1 = dy1 - (j*ih) - y;
487 int sx2 = dx2 - (i*iw) - x;
488 int sy2 = dy2 - (j*ih) - y;
490 if (dx2 - dx1 > 0 && dy2 - dy1 > 0 && sx2 - sx1 > 0 && sy2 - sy1 > 0)
491 buf.drawPicture(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2);
496 void renderText(int x, int y, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
497 for(int i=0; i<text.length(); i++) {
499 char c = text.charAt(i);
500 Glyph g = Glyph.getGlyph(font, fontsize, c);
501 buf.drawPictureAlphaOnly(g.p,
503 y + g.max_ascent - g.baseline,
505 y + g.max_ascent - g.baseline + g.p.getHeight(),
507 g.p.getWidth(), g.p.getHeight(),
514 // Methods to implement org.xwt.js.JS //////////////////////////////////////
516 public Object callMethod(Object method, JS.Array args, boolean checkOnly) throws JS.Exn {
517 if ("indexof".equals(method)) {
518 if (checkOnly) return Boolean.TRUE;
519 if (args.length() != 1 || args.elementAt(0) == null || !(args.elementAt(0) instanceof Box)) return new Integer(-1);
520 Box b = (Box)args.elementAt(0);
521 if (b.parent != Box.this) {
522 if (redirect == null || redirect == Box.this) return new Integer(-1);
523 return redirect.callMethod(method, args, checkOnly);
525 return new Integer(b.getIndexInParent());
530 /** Returns the i_th child */
531 public Object get(int i) {
532 if (redirect == null) return null;
533 if (redirect != this) return redirect.get(i);
534 return i >= numChildren() || i < 0 ? null : getChild(i);
538 * Inserts value as child i; calls remove() if necessary.
539 * This method handles "reinserting" one of your children properly.
540 * INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
541 * WARNING: O(n) runtime, unless i == numChildren()
543 public void put(int i, Object value) {
545 Trap t = value == null ? (Trap)get("childremoved", Trap.class) : (Trap)get("childadded", Trap.class);
547 if (value != null && !(value instanceof Box)) {
548 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to a non-box");
552 if (redirect == null) {
553 if (t != null) t.perform(value);
554 else if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
555 } else if (redirect != this) {
556 Box b = value == null ? (Box)redirect.get(i) : (Box)value;
557 redirect.put(i, value);
558 if (t != null) t.perform(value);
559 } else if (value == null) {
560 if (i >= 0 && i < numChildren()) {
563 if (t != null) t.perform(b);
566 Box newnode = (Box)value;
568 // check if box being moved is currently target of a redirect
569 for(Box cur = newnode.parent; cur != null; cur = cur.parent)
570 if (cur.redirect == newnode) {
571 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
575 // check for recursive ancestor violation
576 for(Box cur = this; cur != null; cur = cur.parent)
577 if (cur == newnode) {
578 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
579 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
583 if (numKids > 15 && children == null) convert_to_array();
585 newnode.parent = this;
587 if (children == null) {
588 if (firstKid == null) {
590 newnode.prevSibling = newnode;
591 newnode.nextSibling = newnode;
592 } else if (i >= numKids) {
593 newnode.prevSibling = firstKid.prevSibling;
594 newnode.nextSibling = firstKid;
595 firstKid.prevSibling.nextSibling = newnode;
596 firstKid.prevSibling = newnode;
599 for(int j=0; j<i; j++) cur = cur.nextSibling;
600 newnode.prevSibling = cur.prevSibling;
601 newnode.nextSibling = cur;
602 cur.prevSibling.nextSibling = newnode;
603 cur.prevSibling = newnode;
604 if (i == 0) firstKid = newnode;
609 if (i >= children.size()) {
610 newnode.indexInParent = children.size();
611 children.addElement(newnode);
613 children.insertElementAt(newnode, i);
614 for(int j=i; j<children.size(); j++)
615 getChild(j).indexInParent = j;
619 // need both of these in case child was already uncalc'ed
622 MARK_FOR_REFLOW_this;
625 if (t != null) t.perform(b);
629 public Object get(Object key, Object key2) { return super.get(key, key2); }
630 public void put(Object key, Object key2, Object val) { super.put(key, key2, val); }
632 public Object get_(Object name) { return super.get(name); }
633 public Object get(Object name) { return get(name, false); }
634 public Object get(Object name_, boolean ignoretraps) {
635 if (name_ instanceof Number) return get(((Number)name_).intValue());
637 if (!(name_ instanceof String)) return null;
638 String name = (String)name_;
639 if (name.equals("")) return null;
641 // See if we're triggering a trap
642 Trap t = ignoretraps ? (Trap)null : (Trap)get(name, Trap.class);
643 if (t != null) return t.perform();
645 // Check for a special handler
646 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
647 if (gph != null) return gph.get(this);
649 Object ret = super.get(name);
650 if (name.startsWith("$") && ret == null)
651 if (Log.on) Log.logJS(this, "WARNING: attempt to access " + name + ", but no child with id=\"" +
652 name.substring(1) + "\" found");
656 public Object[] keys() {
657 Object[] ret = new Object[numChildren()];
658 for(int i=0; i<ret.length; i++) ret[i] = new Integer(i);
662 public void addTrap(Object name, Object value) { Trap.addTrap(this, name, ((JS.CompiledFunction)value)); }
663 public void delTrap(Object name, Object value) { Trap.delTrap(this, name, ((JS.CompiledFunction)value)); }
668 * @param ignoretraps if set, no traps will be triggered (set when 'cascade' reaches the bottom of the trap stack)
669 * @param rp if this put is being performed via a root proxy, rp is the root proxy.
671 public void put_(Object name, Object value) { super.put(name, value); }
672 public void put(Object name, Object value) { put(name, value, false); }
673 public void put(Object name_, Object value, boolean ignoretraps) {
674 if (name_ instanceof Number) { put(((Number)name_).intValue(), value); return; }
675 if (!(name_ instanceof String)) { super.put(name_,value); return; }
676 String name = name_.toString();
678 Trap t = (Trap)get(name, Trap.class);
685 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
686 if (gph != null) { gph.put(name, this, value); return; }
688 super.put(name, value);
692 // Tree Manipulation /////////////////////////////////////////////////////////////////////
694 /** The parent of this node */
695 private Box parent = null;
697 // Variables used in Vector mode */
698 /** INVARIANT: if (parent != null) parent.children.elementAt(indexInParent) == this */
699 private int indexInParent;
700 private Vec children = null;
702 // Variables used in linked-list mode
703 private int numKids = 0;
704 private Box nextSibling = null;
705 private Box prevSibling = null;
706 private Box firstKid = null;
708 // when we get more than 15 children, we switch to array-mode
709 private void convert_to_array() {
710 children = new Vec(numKids);
713 children.addElement(cur);
714 cur.indexInParent = children.size() - 1;
715 cur = cur.nextSibling;
716 } while (cur != firstKid);
719 /** remove this node from its parent; INVARIANT: whenever the parent of a node is changed, remove() gets called. */
720 public void remove() {
721 if (parent == null) {
722 if (surface != null) surface.dispose(true);
725 Box oldparent = parent;
726 if (oldparent == null) return;
727 MARK_FOR_REFLOW_this;
729 flags &= ~MOUSEINSIDE_FLAG;
731 if (parent.children != null) {
732 parent.children.removeElementAt(indexInParent);
733 for(int j=indexInParent; j<parent.children.size(); j++)
734 (parent.getChild(j)).indexInParent = j;
737 if (parent.firstKid == this) {
738 if (nextSibling == this) parent.firstKid = null;
739 else parent.firstKid = nextSibling;
742 prevSibling.nextSibling = nextSibling;
743 nextSibling.prevSibling = prevSibling;
749 if (oldparent != null) { Box b = oldparent; MARK_FOR_REFLOW_b; }
751 // note that JavaScript box[0] will invoke put(int i), not put(String s)
752 if (oldparent != null) {
753 Trap t = (Trap)oldparent.get("childremoved", Trap.class);
754 if (t != null) t.perform(this);
758 /** returns our next sibling (parent[ourindex + 1]) */
759 public final Box nextSibling() {
760 if (parent == null) return null;
761 if (parent.children == null) {
762 if (nextSibling == parent.firstKid) return null;
765 if (indexInParent >= parent.children.size() - 1) return null;
766 return (Box)parent.children.elementAt(indexInParent + 1);
770 /** returns our next sibling (parent[ourindex + 1]) */
771 public final Box prevSibling() {
772 if (parent == null) return null;
773 if (parent.children == null) {
774 if (this == parent.firstKid) return null;
777 if (indexInParent == 0) return null;
778 return (Box)parent.children.elementAt(indexInParent - 1);
782 /** Returns the parent of this node */
783 public Box getParent() { return parent; }
785 /** Returns ith child */
786 public Box getChild(int i) {
787 if (children == null) {
788 if (firstKid == null) return null;
789 if (i >= numKids) return null;
790 if (i == numKids - 1) return firstKid.prevSibling;
792 for(int j=0; j<i; j++) cur = cur.nextSibling;
795 if (i >= children.size() || i < 0) return null;
796 return (Box)children.elementAt(i);
800 /** Returns the number of children */
801 public int numChildren() {
802 if (children == null) {
803 if (firstKid == null) return 0;
805 for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
808 return children.size();
812 /** Returns our index in our parent */
813 public int getIndexInParent() {
814 if (parent == null) return 0;
815 if (parent.children == null) {
817 for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
820 return indexInParent;
824 /** returns the root of the surface that this box belongs to */
825 public final Box getRoot() {
826 if (parent == null && surface != null) return this;
827 if (parent == null) return null;
828 return parent.getRoot();
832 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
834 static final int min(int a, int b) { if (a<b) return a; else return b; }
835 static final float min(float a, float b) { if (a<b) return a; else return b; }
836 static final double min(double a, double b) { if (a<b) return a; else return b; }
837 static final int max(int a, int b) { if (a>b) return a; else return b; }
838 static final float max(float a, float b) { if (a>b) return a; else return b; }
839 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; }
840 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; }
841 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
842 final boolean inside(int x, int y) { return (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
844 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
845 public static Box whoIs(Box cur, int x, int y) {
847 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
851 // WARNING: this method is called from the event-queueing
852 // thread -- it may run concurrently with ANY part of XWT, and
853 // is UNSYNCHRONIZED for performance reasons. BE CAREFUL
856 if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
857 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
859 for(int i=cur.numChildren() - 1; i>=0; i--) {
860 Box child = cur.getChild(i);
861 if (child == null) continue; // since this method is unsynchronized, we have to double-check
864 if (!((child.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
874 * A helper class for properties of Box which require special
877 * To avoid excessive use of String.equals(), the Box.get() and
878 * Box.put() methods employ a Hash keyed on property names that
879 * require special handling. The value stored in the Hash is an
880 * instance of an anonymous subclass of SpecialBoxProperty, which knows
881 * how to handle get()s and put()s for that property name. There
882 * should be one anonymous subclass of SpecialBoxProperty for each
883 * specially-handled property on Box.
885 static class SpecialBoxProperty {
887 SpecialBoxProperty() { }
889 /** stores instances of SpecialBoxProperty; keyed on property name */
890 static Hash specialBoxProperties = new Hash(200, 3);
892 /** this method defines the behavior when the property is get()ed from b */
893 Object get(Box b) { return null; }
895 /** this method defines the behavior when the property is put() to b */
896 void put(Box b, Object value) { }
898 /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
899 void put(String name, Box b, Object value) { put(b, value); }
902 specialBoxProperties.put("fill", new ColorBoxProperty() {
903 public int getColor(Box b) { return b.fillcolor; }
904 public void putColor(Box b, int argb) { b.fillcolor = argb; }
906 specialBoxProperties.put("textcolor", new ColorBoxProperty() {
907 public int getColor(Box b) { return b.textcolor; }
908 public void putColor(Box b, int argb) { b.textcolor = argb; }
910 specialBoxProperties.put("strokecolor", new ColorBoxProperty() {
911 public int getColor(Box b) { return b.strokecolor; }
912 public void putColor(Box b, int argb) { b.strokecolor = argb; }
915 specialBoxProperties.put("text", new SpecialBoxProperty() {
916 public Object get(Box b) { return b.text; }
917 public void put(Box b, Object value) {
918 String t = value == null ? "null" : value.toString();
919 if (t.equals(b.text)) return;
922 if (b.textwidth != 0 || b.textheight != 0) MARK_FOR_REFLOW_b;
923 b.textwidth = b.textheight = 0;
928 for(int i=0; i<b.text.length(); i++) {
929 Glyph g = Glyph.getGlyph(b.font, b.fontsize, b.text.charAt(i));
930 b.textwidth += g.advance;
931 b.textheight = g.max_ascent + g.max_descent;
933 } catch (Exception e) {
940 specialBoxProperties.put("path", new SpecialBoxProperty() {
941 public Object get(Box b) { throw new JS.Exn("cannot read from the path property"); }
942 public void put(Box b, Object value) {
943 String t = value == null ? "null" : value.toString();
944 b.path = value == null ? null : VectorGraphics.parseVectorPath(value.toString());
949 specialBoxProperties.put("transform", new SpecialBoxProperty() {
950 public void put(Box b, Object value) {
951 String t = value.toString().trim();
952 b.transform = VectorGraphics.Affine.identity();
953 while (t.length() > 0) {
954 if (t.startsWith("skewX(")) {
957 } else if (t.startsWith("shear(")) {
958 // FIXME: nonstandard; remove this
959 b.transform.multiply(VectorGraphics.Affine.shear(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
961 } else if (t.startsWith("skewY(")) {
964 } else if (t.startsWith("rotate(")) {
965 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
966 if (sub.indexOf(',') != -1) {
967 float angle = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
968 sub = sub.substring(sub.indexOf(',') + 1);
969 float cx = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
970 sub = sub.substring(sub.indexOf(',') + 1);
971 float cy = Float.parseFloat(sub);
972 b.transform.multiply(VectorGraphics.Affine.translate(cx, cy));
973 b.transform.multiply(VectorGraphics.Affine.rotate(angle));
974 b.transform.multiply(VectorGraphics.Affine.translate(-1 * cx, -1 * cy));
976 b.transform.multiply(VectorGraphics.Affine.rotate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
979 } else if (t.startsWith("translate(")) {
980 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
981 if (sub.indexOf(',') > -1) {
982 b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
983 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
985 b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))), 0));
988 } else if (t.startsWith("flip(")) {
989 String which = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
990 b.transform.multiply(VectorGraphics.Affine.flip(which.equals("horizontal"), which.equals("vertical")));
992 } else if (t.startsWith("scale(")) {
993 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
994 if (sub.indexOf(',') > -1) {
995 b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
996 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
998 b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
999 Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(',')))));
1002 } else if (t.startsWith("matrix(")) {
1003 // FIXME: is this mapped right?
1004 float d[] = new float[6];
1005 StringTokenizer st = new StringTokenizer(t, ",", false);
1006 for(int i=0; i<6; i++)
1007 d[i] = Float.parseFloat(st.nextToken());
1008 b.transform.multiply(new VectorGraphics.Affine(d[0], d[1], d[2], d[3], d[4], d[5]));
1010 t = t.substring(t.indexOf(')') + 1).trim();
1015 public Object get(Box b) { return b.transform.toString(); }
1018 specialBoxProperties.put("font", new SpecialBoxProperty() {
1019 public Object get(Box b) { return b.font; }
1020 public void put(Box b, Object value) {
1021 // FIXME: translate value into a resource if it is a string
1022 b.font = value == null ? null : (Res)value;
1024 b.flags |= FONT_CHANGED_FLAG;
1028 specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
1029 public Object get(Box b) { return b.font; }
1030 public void put(Box b, Object value) {
1031 if (b.fontsize == stoi(value)) return;
1032 b.fontsize = stoi(value);
1034 b.flags |= FONT_CHANGED_FLAG;
1038 specialBoxProperties.put("strokewidth", new SpecialBoxProperty() {
1039 public Object get(Box b) { return new Integer(b.strokewidth); }
1040 public void put(Box b, Object value) {
1041 if (b.strokewidth == stoi(value)) return;
1042 b.strokewidth = stoi(value);
1046 specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
1047 public Object get(Box b) { return b; }
1048 public void put(Box b, Object value) {
1049 if (value == null) b.remove();
1050 else if (value.equals("window") || value.equals("frame")) Platform.createSurface(b, value.equals("frame"), true);
1051 else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
1055 specialBoxProperties.put("orient", new SpecialBoxProperty() {
1056 public Object get(Box b) {
1057 Log.log(this, "warning: the orient property is deprecated");
1058 if (b.redirect == null) return "horizontal";
1059 else if (b.redirect != b) return get(b.redirect);
1060 else if (b.cols == 1) return "vertical";
1061 else if (b.rows == 1) return "horizontal";
1064 public void put(Box b, Object value) {
1065 Log.log(this, "warning: the orient property is deprecated");
1066 if (value == null) return;
1067 if (b.redirect == null) return;
1068 if (b.redirect != b) { put(b.redirect, value); return; }
1069 if (value.equals("vertical")) {
1070 if (b.rows == 0) return;
1071 b.rows = 0; b.cols = 1;
1072 } else if (value.equals("horizontal")) {
1073 if (b.cols == 0) return;
1074 b.cols = 0; b.rows = 1;
1076 Log.log(this, "invalid value put to orient property: " + value);
1080 specialBoxProperties.put("shrink", new SpecialBoxProperty() {
1081 public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
1082 public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
1085 //#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
1086 specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
1087 public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
1088 public void put(Box b, Object value) {
1089 boolean newshrink = stob(value);
1090 if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
1091 if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
1098 specialBoxProperties.put("x", new SpecialBoxProperty() {
1099 public Object get(Box b) {
1100 if (b.surface == null) return new Integer(0);
1101 if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
1102 return new Integer(b.x);
1104 public void put(Box b, Object value) {
1105 if (!((b.flags & NOTPACKED_FLAG) != 0)) return;
1106 int x = stoi(value);
1107 if (x == b.x) return;
1110 if (b.parent == null && b.surface != null) b.surface.setLocation();
1117 //#repeat width/height minwidth/minheight maxwidth/maxheight
1118 specialBoxProperties.put("width", new SpecialBoxProperty() {
1119 public Object get(Box b) { return new Integer(b.width); }
1120 public void put(Box b, Object value) {
1121 b.width = stoi(value);
1122 if (b.parent == null && b.surface != null) {
1123 b.surface.setSize();
1126 if (b.minwidth == b.width && b.maxwidth == b.width) return;
1127 b.minwidth = b.maxwidth = b.width;
1133 //#repeat cols/rows rows/cols
1134 specialBoxProperties.put("cols", new SpecialBoxProperty() {
1135 public Object get(Box b) { return new Double(b.cols); }
1136 public void put(Box b, Object value) {
1137 if (b.cols == stoi(value)) return;
1138 b.cols = stoi(value);
1139 if (b.cols == 0 && b.rows == 0) b.rows = 1;
1140 if (b.cols != 0 && b.rows != 0) b.rows = 0;
1145 //#repeat colspan/rowspan
1146 specialBoxProperties.put("colspan", new SpecialBoxProperty() {
1147 public Object get(Box b) { return new Double(b.colspan); }
1148 public void put(Box b, Object value) {
1149 if (b.colspan == stoi(value)) return;
1150 b.colspan = stoi(value);
1156 specialBoxProperties.put("tile", new SpecialBoxProperty() {
1157 public Object get(Box b) { return ((b.flags & TILE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1158 public void put(Box b, Object value) {
1159 if (((b.flags & TILE_FLAG) != 0) == stob(value)) return;
1160 if (stob(value)) b.flags |= TILE_FLAG; else b.flags &= ~TILE_FLAG;
1164 specialBoxProperties.put("noclip", new SpecialBoxProperty() {
1165 public Object get(Box b) { return ((b.flags & NOCLIP_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1166 public void put(Box b, Object value) {
1167 if (((b.flags & NOCLIP_FLAG) != 0) == stob(value)) return;
1168 if (stob(value)) b.flags |= NOCLIP_FLAG; else b.flags &= ~NOCLIP_FLAG;
1173 specialBoxProperties.put("visible", new SpecialBoxProperty() {
1174 public Object get(Box b) {
1175 for (Box cur = b; cur != null; cur = cur.parent) {
1176 if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.FALSE; }
1177 return Boolean.TRUE;
1179 public void put(Box b, Object value) {
1180 if (!stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
1181 if (!stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
1182 if (b.parent == null) {
1183 if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
1186 MARK_FOR_REFLOW_b_parent;
1187 b.parent.dirty(b.x, b.y, b.width, b.height);
1191 specialBoxProperties.put("packed", new SpecialBoxProperty() {
1192 public Object get(Box b) { return ((b.flags & NOTPACKED_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1193 public void put(Box b, Object value) {
1194 if (stob(value) == ((b.flags & NOTPACKED_FLAG) == 0)) return;
1195 if (!stob(value)) b.flags |= NOTPACKED_FLAG; else b.flags &= ~NOTPACKED_FLAG;
1196 if ((b.flags & NOTPACKED_FLAG) != 0) { b.x = 0; b.y = 0; }
1197 if (b.parent != null) MARK_FOR_REFLOW_b_parent;
1200 specialBoxProperties.put("image", new SpecialBoxProperty() {
1202 public Object get(Box b) { return b.image == null ? null : ImageDecoder.imageToNameMap.get(b.image); }
1204 public void put(Box b, Object value) {
1205 //if (image != null) System.out.println("hit");
1206 if (value == null) {
1208 } else if (value instanceof Res) {
1209 b.image = Picture.fromRes((Res)value);
1213 b.minwidth = min(b.maxwidth, max(b.minwidth, b.image == null ? 0 : b.image.getWidth()));
1214 b.minheight = min(b.maxheight, max(b.minheight, b.image == null ? 0 : b.image.getHeight()));
1220 //#repeat globalx/globaly x/y
1221 specialBoxProperties.put("globalx", new SpecialBoxProperty() {
1222 public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
1223 public void put(Box b, Object value) {
1224 if (b.surface == null || b.parent == null) return;
1225 b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
1231 specialBoxProperties.put("cursor", new SpecialBoxProperty() {
1232 public Object get(Box b) { return b.cursor; }
1233 public void put(Box b, Object value) {
1234 b.cursor = (String)value;
1235 if (b.surface == null) return;
1237 // see if we need to update the surface cursor
1238 Surface surface = b.getRoot().surface;
1239 String tempcursor = surface.cursor;
1240 b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
1241 if (surface.cursor != tempcursor) surface.syncCursor();
1245 //#repeat mousex/mousey x/y
1246 specialBoxProperties.put("mousex", new SpecialBoxProperty() {
1247 public Object get(Box b) {
1248 Surface surface = b.getRoot().surface;
1249 if (surface == null) return new Integer(0);
1250 int mousex = surface.mousex;
1251 for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
1252 return new Integer(mousex);
1257 specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
1258 public Object get(Box b) {
1259 return ((b.flags & MOUSEINSIDE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1262 specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
1263 public Object get(Box b) {
1264 if (b.redirect == null) return new Integer(0);
1265 if (b.redirect != b) return get(b.redirect);
1266 return new Integer(b.numChildren());
1269 SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
1270 public void put(String name, Box b, Object value) {
1271 Surface surface = b.getRoot().surface;
1272 if (surface == null) return;
1273 int mousex = surface.mousex;
1274 int mousey = surface.mousey;
1275 for(Box c = b.parent; c != null && c.parent != null; c = c.parent) {
1279 for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
1280 if (c.inside(mousex - c.x, mousey - c.y)) {
1285 if (b.parent != null) b.parent.put(name, value);
1288 specialBoxProperties.put("Press1", mouseEventHandler);
1289 specialBoxProperties.put("Press2", mouseEventHandler);
1290 specialBoxProperties.put("Press3", mouseEventHandler);
1291 specialBoxProperties.put("Release1", mouseEventHandler);
1292 specialBoxProperties.put("Release2", mouseEventHandler);
1293 specialBoxProperties.put("Release3", mouseEventHandler);
1294 specialBoxProperties.put("Click1", mouseEventHandler);
1295 specialBoxProperties.put("Click2", mouseEventHandler);
1296 specialBoxProperties.put("Click3", mouseEventHandler);
1297 specialBoxProperties.put("DoubleClick1", mouseEventHandler);
1298 specialBoxProperties.put("DoubleClick2", mouseEventHandler);
1299 specialBoxProperties.put("DoubleClick3", mouseEventHandler);
1301 specialBoxProperties.put("root", new SpecialBoxProperty() {
1302 public void put(Box b, Object value) {
1303 if (stob(value)) b.flags |= ISROOT_FLAG;
1304 else b.flags &= ~ISROOT_FLAG;
1306 public Object get(Box b) {
1307 if (b.parent == null || ((b.flags & ISROOT_FLAG) != 0)) return b;
1308 else return get(b.parent);
1311 specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
1312 public Object get(Box b) {
1313 if (b.parent == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
1316 public void put(Box b, Object value) {
1317 if (b.surface == null) return;
1318 boolean val = stob(value);
1319 if (b.parent == null && b.surface.minimized != val) b.surface.setMinimized(val);
1323 specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
1324 public Object get(Box b) {
1325 if (b.parent == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
1328 public void put(Box b, Object value) {
1329 if (b.surface == null) return;
1330 boolean val = stob(value);
1331 if (b.parent == null && b.surface.maximized != val) b.surface.setMaximized(val);
1335 specialBoxProperties.put("toback", new SpecialBoxProperty() {
1336 public void put(Box b, Object value) {
1337 if (b.parent == null && stob(value) && b.surface != null) b.surface.toBack();
1341 specialBoxProperties.put("tofront", new SpecialBoxProperty() {
1342 public void put(Box b, Object value) {
1343 if (b.parent == null && stob(value) && b.surface != null) b.surface.toFront();
1347 specialBoxProperties.put("Close", new SpecialBoxProperty() {
1348 public void put(Box b, Object value) {
1349 if (b.parent == null && b.surface != null) b.surface.dispose(true);
1353 // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
1354 specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
1355 specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
1356 specialBoxProperties.put("PosChange", new SpecialBoxProperty());
1357 specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
1359 //#repeat minwidth/minheight maxwidth/maxheight
1360 specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
1361 public Object get(Box b) { return new Integer(b.minwidth); }
1362 public void put(Box b, Object value) {
1363 if (stoi(value) == b.minwidth) return;
1364 b.minwidth = stoi(value);
1368 specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
1369 public Object get(Box b) { return new Integer(b.maxwidth); }
1370 public void put(Box b, Object value) {
1371 if (stoi(value) == b.maxwidth) return;
1372 b.maxwidth = stoi(value);
1378 specialBoxProperties.put("redirect", new SpecialBoxProperty() {
1379 public void put(Box b, Object value) {
1380 if (b.redirect != b) Log.log(this, "cannot change the redirect of a box once it is set");
1381 else if (value == null) b.redirect = null;
1383 Box b2 = (Box)value;
1384 while(b2 != b && b2 != null) b2 = b2.parent;
1385 if (b2 == null) Log.log(this, "a box's redirect must be one of its descendants");
1386 b.redirect = (Box)value;
1389 public Object get(Box b) {
1390 if (b.redirect == null) return null;
1391 if (b.redirect == b) return Boolean.TRUE;
1392 return get(b.redirect);
1396 // FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
1397 specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
1398 public void put(Box b, Object value) {
1399 if (b.surface != null) b.surface.setTitleBarText(value.toString());
1400 b.put_("titlebar", value);
1402 public Object get(Box b) { return b.get_("titlebar"); }
1405 specialBoxProperties.put("icon", new SpecialBoxProperty() {
1408 public void put(Box b, Object value) {
1409 b.put_("icon", value);
1410 if (b.surface == null) return;
1411 Picture pic = ImageDecoder.getPicture(value.toString());
1412 if (pic != null) b.surface.setIcon(pic);
1413 else if (Log.on) Log.log(this, "unable to load icon " + value);
1415 public Object get(Box b) { return b.get_("icon"); }
1420 private static abstract class ColorBoxProperty extends SpecialBoxProperty {
1421 public abstract int getColor(Box b);
1422 public abstract void putColor(Box b, int argb);
1423 public Object get(Box b) {
1424 if ((getColor(b) & 0xFF000000) == 0) return null;
1425 String red = Integer.toHexString((getColor(b) & 0x00FF0000) >> 16);
1426 String green = Integer.toHexString((getColor(b) & 0x0000FF00) >> 8);
1427 String blue = Integer.toHexString(getColor(b) & 0x000000FF);
1428 if (red.length() < 2) red = "0" + red;
1429 if (blue.length() < 2) blue = "0" + blue;
1430 if (green.length() < 2) green = "0" + green;
1431 return "#" + red + green + blue;
1433 public void put(Box b, Object value) {
1434 int newcolor = getColor(b);
1435 String s = value == null ? null : value.toString();
1436 if (value == null) newcolor = 0x00000000;
1437 else if (s.length() > 0 && s.charAt(0) == '#')
1439 newcolor = 0xFF000000 |
1440 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
1441 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
1442 Integer.parseInt(s.substring(5, 7), 16);
1443 } catch (NumberFormatException e) {
1444 Log.log(this, "invalid color " + s);
1447 else if (org.xwt.translators.SVG.colors.get(s) != null)
1448 newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
1449 if (newcolor == getColor(b)) return;
1450 putColor(b, newcolor);
1456 /** helper that converts a String to a boolean according to JavaScript coercion rules */
1457 public static boolean stob(Object o) {
1458 if (o == null) return false;
1459 return Boolean.TRUE.equals(o) || "true".equals(o);
1462 /** helper that converts a String to an int according to JavaScript coercion rules */
1463 public static int stoi(Object o) {
1464 if (o == null) return 0;
1465 if (o instanceof Integer) return ((Integer)o).intValue();
1468 if (!(o instanceof String)) s = o.toString();
1471 try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
1472 catch (NumberFormatException e) { return 0; }