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 TILE_FLAG = 0x00000020;
93 static final int FONT_CHANGED_FLAG = 0x00000040; // set when font changes, cleared during repack
94 static final int ISROOT_FLAG = 0x00000080;
95 static final int NOCLIP_FLAG = 0x00000100;
96 static final int ALIGN_TOP_FLAG = 0x00001000;
97 static final int ALIGN_BOTTOM_FLAG = 0x00002000;
98 static final int ALIGN_LEFT_FLAG = 0x00004000;
99 static final int ALIGN_RIGHT_FLAG = 0x00008000;
100 static final int ALIGN_FLAGS = 0x0000f000;
103 // Geometry ////////////////////////////////////////////////////////////////////////////
105 // xwt can be compiled with 16-bit lengths to save memory on small devices
107 //#define MAX_LENGTH Integer.MAX_VALUE
108 //#define MIN_LENGTH Integer.MIN_VALUE
110 // always correct (set directly by user)
111 public LENGTH minwidth = 0;
112 public LENGTH minheight = 0;
113 public LENGTH maxwidth = MAX_LENGTH;
114 public LENGTH maxheight = MAX_LENGTH;
115 private String text = null;
116 private Res font = null;
117 private int fontsize = 10;
118 private LENGTH textwidth = 0;
119 private LENGTH textheight = 0;
121 // FEATURE: use shorts
122 private int rows = 1;
123 private int cols = 0;
124 private int rowspan = 1;
125 private int colspan = 1;
127 // computed during reflow
130 public LENGTH width = 0;
131 public LENGTH height = 0;
132 private int row = 0; // FEATURE use a short
133 private int col = 0; // FEATURE use a short
134 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
135 private LENGTH contentheight = 0;
136 private LENGTH offset_x = 0;
137 private LENGTH offset_y = 0;
140 // Rendering Properties ///////////////////////////////////////////////////////////
142 private VectorGraphics.VectorPath path = null;
143 private VectorGraphics.Affine transform = null;
145 private VectorGraphics.RasterPath rpath = null;
146 private VectorGraphics.Affine rtransform = null;
148 //private VectorGraphics.Paint fill = null;
149 //private VectorGraphics.Paint stroke = null;
152 public Picture image; // will disappear
153 private int fillcolor = 0x00000000; // will become VectorGraphics.Paint
154 private int strokecolor = 0xFF000000; // will become VectorGraphics.Paint
155 private int textcolor = 0xFF000000; // will become VectorGraphics.Paint
157 private String cursor = null; // the cursor for this box
160 // Instance Methods /////////////////////////////////////////////////////////////////////
162 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
163 public final void dirty() {
164 if ((flags & NOCLIP_FLAG) != 0 && parent != null) parent.dirty();
165 else dirty(0, 0, width, height);
167 public final void dirty(int x, int y, int w, int h) {
168 for(Box cur = this; cur != null; cur = cur.parent) {
169 if ((flags & NOCLIP_FLAG) == 0) {
170 w = min(x + w, cur.width) - max(x, 0);
171 h = min(y + h, cur.height) - max(y, 0);
175 if (w <= 0 || h <= 0) return;
176 if (cur.parent == null && cur.surface != null) cur.surface.dirty(x, y, w, h);
183 * Given an old and new mouse position, this will update <tt>mouseinside</tt> and check
184 * to see if this node requires any Enter, Leave, or Move notifications.
186 * @param forceleave set to true by the box's parent if the mouse is inside an older
187 * sibling, which is covering up this box.
189 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
190 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
192 boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
193 boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
194 if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
196 if (!wasinside && !isinside) return;
198 if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
199 else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
200 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
201 put("Move", Boolean.TRUE);
203 if (isinside && cursor != null) getRoot().cursor = cursor;
205 // if the mouse has moved into our padding region, it is considered 'outside' all our children
206 if (!(mousex >= 0 && mousey >= 0 && mousex < width && mousey < height)) forceleave = true;
208 for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
209 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
210 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
215 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
217 /** only for use on the root box */
218 void reflow() { reflow(width, height); }
219 void reflow(int new_width, int new_height) {
221 if (Surface.abort) return;
222 //#repeat width/height new_width/new_height HSHRINK_FLAG/VSHRINK_FLAG contentwidth/contentheight minwidth/minheight maxwidth/maxheight
223 new_width = bound(max(contentwidth, minwidth),
225 ((flags & HSHRINK_FLAG) != 0) ? max(contentwidth, minwidth) : maxwidth);
227 resize(x, y, new_width, new_height);
230 /** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
232 if (!needs_reflow) return;
233 contentwidth = contentheight = 0;
235 // --- Phase 0 ----------------------------------------------------------------------
237 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
238 if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
239 child.flags |= FONT_CHANGED_FLAG;
240 child.needs_reflow = true;
243 if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
245 flags &= ~FONT_CHANGED_FLAG;
247 // --- Phase 1 ----------------------------------------------------------------------
248 // assign children to their row/column positions (assuming constrained columns)
249 if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
250 //#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
251 if (rows == 0 && numChildren() != 0) {
252 int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
253 Box child = getChild(0);
254 for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
255 OUTER: for(int row=0; child != null; row++) {
256 for(int col=0; child != null && col < cols;) {
257 INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
258 while(col < cols && numRowsInCol[col] > row) col++;
259 for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
260 if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
263 if (col + min(cols, child.colspan) > cols) break;
264 for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
267 col += min(cols, child.colspan);
268 child = child.nextSibling();
269 for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
275 // --- Phase 2 ----------------------------------------------------------------------
276 // compute the min/max sizes of the columns and rows and set our contentwidth
277 //#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
278 if (numChildren() != 0) {
281 for(Box child = getChild(0); child != null; child = child.nextSibling())
282 numCols = max(numCols, child.col + child.colspan);
283 LENGTH[] colWidth = new LENGTH[numCols];
284 for(Box child = getChild(0); child != null; child = child.nextSibling())
285 if (!(((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
286 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
287 for(int col=0; col<numCols; col++) contentwidth += colWidth[col];
289 contentwidth = max(textwidth, contentwidth);
290 contentwidth = bound(minwidth, contentwidth, maxwidth);
294 if ((flags & NOTPACKED_FLAG) == 0) {
296 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
297 if ((flags & HSHRINK_FLAG) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
298 if ((flags & VSHRINK_FLAG) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
299 // FIXME: separate offset_x needed for the path
301 //#repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
302 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
303 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
304 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
305 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
306 int left = min(min(x1, x2), min(x3, x4));
307 int right = max(max(x1, x2), max(x3, x4));
308 contentwidth = max(contentwidth, right - left);
309 offset_x = -1 * left;
315 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
317 // --- Phase 1 ----------------------------------------------------------------------
318 // run PosChange/SizeChange, dirty as needed
319 if (x != this.x || y != this.y || width != this.width || height != this.height) {
320 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
321 boolean sizechange = false, poschange = false;
322 if ((this.width != width || this.height != height) && get("SizeChange", Trap.class) != null) sizechange = true;
323 if ((this.x != x || this.y != y) && get("PosChange", Trap.class) != null) poschange = true;
324 this.width = width; this.height = height; this.x = x; this.y = y;
326 if (sizechange || poschange)
327 if (sizePosChangesSinceLastRender == 500) {
328 if (Log.on) Log.logJS(this, "Warning, more than 500 SizeChange/PosChange traps triggered since last complete render");
330 sizePosChangesSinceLastRender++;
331 try { if (sizechange) put("SizeChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
332 try { if (poschange) put("PosChange", Boolean.TRUE); } catch (Exception e) { Log.log(this, e); }
333 Surface.abort = true;
339 // --- short circuit ----------------------------------------------------------------
340 if (!needs_reflow) return;
341 needs_reflow = false;
342 if (numChildren() == 0) return;
344 // --- Phase 2 ----------------------------------------------------------------------
345 // compute the min/max sizes of the columns and rows and set initial width/height to minimums
347 //#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
350 for(Box child = getChild(0); child != null; child = child.nextSibling())
351 numCols = max(numCols, child.col + child.colspan);
352 LENGTH[] colWidth = new LENGTH[numCols];
353 LENGTH[] colMaxWidth = new LENGTH[numCols];
354 int marginWidth = width;
355 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = -1;
358 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
359 if (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)) continue;
360 //#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
361 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
362 for(int i=child.col; i<child.col+child.colspan && i<numCols; i++)
363 colMaxWidth[i] = max(colMaxWidth[i], (((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) / child.colspan);
367 //#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
368 for(int i=0; i<colMaxWidth.length; i++) if (colMaxWidth[i] == -1) colMaxWidth[i] = MAX_LENGTH;
370 for(int i=0; i<colMaxWidth.length; i++) {
371 if (colMaxWidth[i] == MAX_LENGTH) { marginWidth = 0; break; }
372 marginWidth -= colMaxWidth[i];
373 if (marginWidth < 0) { marginWidth = 0; break; }
378 // --- Phase 3 ----------------------------------------------------------------------
379 // hand out the slack
381 //#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
383 for(int i=0; i<numCols; i++) slack -= colWidth[i];
384 if (numChildren() > 0)
386 // FEATURE: inefficient
387 int startslack = slack;
388 int increment = max(1, slack / numCols);
389 for(int col=0; col < numCols && slack > 0; col++) {
390 slack += colWidth[col];
391 colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
392 slack -= colWidth[col];
394 if (slack == startslack) break;
399 // --- Phase 4 ----------------------------------------------------------------------
400 // assign children's new sizes and positions and recurse
401 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
402 if ((child.flags & INVISIBLE_FLAG) != 0) continue;
403 int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
404 if ((child.flags & NOTPACKED_FLAG) != 0) {
407 child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x);
408 child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y);
411 //#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
412 child_width = 0; for(int i=child.col; i<child.col+child.colspan && i<colWidth.length; i++) child_width += colWidth[i];
413 diff = bound(child.contentwidth, child_width, ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : child.maxwidth) - child_width;
414 if (transform == null) {
415 if ((flags & ALIGN_RIGHT_FLAG) != 0) child_x = marginWidth;
416 else if ((flags & ALIGN_LEFT_FLAG) == 0) child_x = marginWidth / 2;
418 for(int i=0; i<child.col; i++) child_x += colWidth[i];
419 if (diff < 0) child_x += -1 * (diff / 2);
423 child.resize(child_x, child_y, child_width, child_height);
430 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
432 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
433 void render(int parentx, int parenty, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf, VectorGraphics.Affine a) {
434 if (Surface.abort || (flags & INVISIBLE_FLAG) != 0) return;
435 int globalx = parentx + (parent == null ? 0 : x);
436 int globaly = parenty + (parent == null ? 0 : y);
438 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
439 if ((flags & NOCLIP_FLAG) == 0) {
440 clipw = min(max(clipx, parent == null ? 0 : globalx) + clipw, (parent == null ? 0 : globalx) + width) - globalx;
441 cliph = min(max(clipy, parent == null ? 0 : globaly) + cliph, (parent == null ? 0 : globaly) + height) - globaly;
442 clipx = max(clipx, parent == null ? 0 : globalx);
443 clipy = max(clipy, parent == null ? 0 : globaly);
445 if (clipw <= 0 || cliph <= 0) return;
447 if (path == null && (fillcolor & 0xFF000000) != 0x00000000) {
448 VectorGraphics.VectorPath path2 = VectorGraphics.parseVectorPath("M0,0H" + width + "V" + height + "H0V0z");
449 path2.realize(a).fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
453 if ((flags & TILE_FLAG) != 0) renderTiledImage(globalx, globaly, clipx, clipy, clipw, cliph, buf);
454 else buf.drawPicture(image, globalx, globaly, clipx, clipy, clipx + clipw, clipy + cliph);
456 if (text != null && !text.equals(""))
457 renderText(globalx, globaly, clipx, clipy, clipw, cliph, buf);
460 if (rtransform == null) rpath = null;
461 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
463 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
464 rtransform = a.copy();
468 rpath = path.realize(a == null ? VectorGraphics.Affine.identity() : a);
470 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
471 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
474 for(Box b = getChild(0); b != null; b = b.nextSibling()) {
475 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
476 if (transform != null) a2.multiply(transform);
477 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));
479 b.render(globalx, globaly, clipx, clipy, clipw, cliph, buf, a2);
483 void renderTiledImage(int globalx, int globaly, int x, int y, int w, int h, PixelBuffer buf) {
486 int iw = image.getWidth();
487 int ih = image.getHeight();
488 for(int i=(x - x)/iw; i <= (x + w - x)/iw; i++) {
489 for(int j=(y - y)/ih; j<= (y + h - y)/ih; j++) {
491 int dx1 = max(i * iw + x, x);
492 int dy1 = max(j * ih + y, y);
493 int dx2 = min((i+1) * iw + x, x + w);
494 int dy2 = min((j+1) * ih + y, y + h);
496 int sx1 = dx1 - (i*iw) - x;
497 int sy1 = dy1 - (j*ih) - y;
498 int sx2 = dx2 - (i*iw) - x;
499 int sy2 = dy2 - (j*ih) - y;
501 if (dx2 - dx1 > 0 && dy2 - dy1 > 0 && sx2 - sx1 > 0 && sy2 - sy1 > 0)
502 buf.drawPicture(image, dx1, dy1, dx2, dy2, sx1, sy1, sx2, sy2);
508 void renderText(int x, int y, int clipx, int clipy, int clipw, int cliph, PixelBuffer buf) {
509 for(int i=0; i<text.length(); i++) {
510 final char c = text.charAt(i);
511 Glyph g = Glyph.getCachedGlyph(font, fontsize, c);
513 int top = y + g.max_ascent - g.baseline + g.max_descent;
515 buf.drawPictureAlphaOnly(g.p, x, top + 4,
516 clipx, clipy, clipx + clipw, clipy + cliph, textcolor);
519 final int fontsize_final = fontsize;
520 final Res font_final = font;
521 ThreadMessage.newthread(new JS.Callable() {
522 public Object call(JS.Array args) {
523 Glyph.renderGlyph(font_final, fontsize_final, c);
525 Box b = Box.this; MARK_FOR_REFLOW_b;
535 // Methods to implement org.xwt.js.JS //////////////////////////////////////
537 public Object callMethod(Object method, JS.Array args, boolean checkOnly) throws JS.Exn {
538 if ("indexof".equals(method)) {
539 if (checkOnly) return Boolean.TRUE;
540 if (args.length() != 1 || args.elementAt(0) == null || !(args.elementAt(0) instanceof Box)) return new Integer(-1);
541 Box b = (Box)args.elementAt(0);
542 if (b.parent != Box.this) {
543 if (redirect == null || redirect == Box.this) return new Integer(-1);
544 return redirect.callMethod(method, args, checkOnly);
546 return new Integer(b.getIndexInParent());
551 /** Returns the i_th child */
552 public Object get(int i) {
553 if (redirect == null) return null;
554 if (redirect != this) return redirect.get(i);
555 return i >= numChildren() || i < 0 ? null : getChild(i);
559 * Inserts value as child i; calls remove() if necessary.
560 * This method handles "reinserting" one of your children properly.
561 * INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
562 * WARNING: O(n) runtime, unless i == numChildren()
564 public void put(int i, Object value) {
566 Trap t = value == null ? (Trap)get("childremoved", Trap.class) : (Trap)get("childadded", Trap.class);
568 if (value != null && !(value instanceof Box)) {
569 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to a non-box");
573 if (redirect == null) {
574 if (t != null) t.perform(value);
575 else if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
576 } else if (redirect != this) {
577 Box b = value == null ? (Box)redirect.get(i) : (Box)value;
578 redirect.put(i, value);
579 if (t != null) t.perform(value);
580 } else if (value == null) {
581 if (i >= 0 && i < numChildren()) {
584 if (t != null) t.perform(b);
587 Box newnode = (Box)value;
589 // check if box being moved is currently target of a redirect
590 for(Box cur = newnode.parent; cur != null; cur = cur.parent)
591 if (cur.redirect == newnode) {
592 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
596 // check for recursive ancestor violation
597 for(Box cur = this; cur != null; cur = cur.parent)
598 if (cur == newnode) {
599 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
600 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
604 if (numKids > 15 && children == null) convert_to_array();
606 newnode.parent = this;
608 if (children == null) {
609 if (firstKid == null) {
611 newnode.prevSibling = newnode;
612 newnode.nextSibling = newnode;
613 } else if (i >= numKids) {
614 newnode.prevSibling = firstKid.prevSibling;
615 newnode.nextSibling = firstKid;
616 firstKid.prevSibling.nextSibling = newnode;
617 firstKid.prevSibling = newnode;
620 for(int j=0; j<i; j++) cur = cur.nextSibling;
621 newnode.prevSibling = cur.prevSibling;
622 newnode.nextSibling = cur;
623 cur.prevSibling.nextSibling = newnode;
624 cur.prevSibling = newnode;
625 if (i == 0) firstKid = newnode;
630 if (i >= children.size()) {
631 newnode.indexInParent = children.size();
632 children.addElement(newnode);
634 children.insertElementAt(newnode, i);
635 for(int j=i; j<children.size(); j++)
636 getChild(j).indexInParent = j;
640 // need both of these in case child was already uncalc'ed
643 MARK_FOR_REFLOW_this;
646 if (t != null) t.perform(b);
650 public Object get(Object key, Object key2) { return super.get(key, key2); }
651 public void put(Object key, Object key2, Object val) { super.put(key, key2, val); }
653 public Object get_(Object name) { return super.get(name); }
654 public Object get(Object name) { return get(name, false); }
655 public Object get(Object name_, boolean ignoretraps) {
656 if (name_ instanceof Number) return get(((Number)name_).intValue());
658 if (!(name_ instanceof String)) return null;
659 String name = (String)name_;
660 if (name.equals("")) return null;
662 // See if we're triggering a trap
663 Trap t = ignoretraps ? (Trap)null : (Trap)get(name, Trap.class);
664 if (t != null) return t.perform();
666 // Check for a special handler
667 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
668 if (gph != null) return gph.get(this);
670 Object ret = super.get(name);
671 if (name.startsWith("$") && ret == null)
672 if (Log.on) Log.logJS(this, "WARNING: attempt to access " + name + ", but no child with id=\"" +
673 name.substring(1) + "\" found");
677 public Object[] keys() {
678 Object[] ret = new Object[numChildren()];
679 for(int i=0; i<ret.length; i++) ret[i] = new Integer(i);
683 public void addTrap(Object name, Object value) { Trap.addTrap(this, name, ((JS.CompiledFunction)value)); }
684 public void delTrap(Object name, Object value) { Trap.delTrap(this, name, ((JS.CompiledFunction)value)); }
689 * @param ignoretraps if set, no traps will be triggered (set when 'cascade' reaches the bottom of the trap stack)
690 * @param rp if this put is being performed via a root proxy, rp is the root proxy.
692 public void put_(Object name, Object value) { super.put(name, value); }
693 public void put(Object name, Object value) { put(name, value, false); }
694 public void put(Object name_, Object value, boolean ignoretraps) {
695 if (name_ instanceof Number) { put(((Number)name_).intValue(), value); return; }
696 if (!(name_ instanceof String)) { super.put(name_,value); return; }
697 String name = name_.toString();
699 Trap t = (Trap)get(name, Trap.class);
706 SpecialBoxProperty gph = (SpecialBoxProperty)SpecialBoxProperty.specialBoxProperties.get(name);
707 if (gph != null) { gph.put(name, this, value); return; }
709 super.put(name, value);
713 // Tree Manipulation /////////////////////////////////////////////////////////////////////
715 /** The parent of this node */
716 private Box parent = null;
718 // Variables used in Vector mode */
719 /** INVARIANT: if (parent != null) parent.children.elementAt(indexInParent) == this */
720 private int indexInParent;
721 private Vec children = null;
723 // Variables used in linked-list mode
724 private int numKids = 0;
725 private Box nextSibling = null;
726 private Box prevSibling = null;
727 private Box firstKid = null;
729 // when we get more than 15 children, we switch to array-mode
730 private void convert_to_array() {
731 children = new Vec(numKids);
734 children.addElement(cur);
735 cur.indexInParent = children.size() - 1;
736 cur = cur.nextSibling;
737 } while (cur != firstKid);
740 /** remove this node from its parent; INVARIANT: whenever the parent of a node is changed, remove() gets called. */
741 public void remove() {
742 if (parent == null) {
743 if (surface != null) surface.dispose(true);
746 Box oldparent = parent;
747 if (oldparent == null) return;
748 MARK_FOR_REFLOW_this;
750 flags &= ~MOUSEINSIDE_FLAG;
752 if (parent.children != null) {
753 parent.children.removeElementAt(indexInParent);
754 for(int j=indexInParent; j<parent.children.size(); j++)
755 (parent.getChild(j)).indexInParent = j;
758 if (parent.firstKid == this) {
759 if (nextSibling == this) parent.firstKid = null;
760 else parent.firstKid = nextSibling;
763 prevSibling.nextSibling = nextSibling;
764 nextSibling.prevSibling = prevSibling;
770 if (oldparent != null) { Box b = oldparent; MARK_FOR_REFLOW_b; }
772 // note that JavaScript box[0] will invoke put(int i), not put(String s)
773 if (oldparent != null) {
774 Trap t = (Trap)oldparent.get("childremoved", Trap.class);
775 if (t != null) t.perform(this);
779 /** returns our next sibling (parent[ourindex + 1]) */
780 public final Box nextSibling() {
781 if (parent == null) return null;
782 if (parent.children == null) {
783 if (nextSibling == parent.firstKid) return null;
786 if (indexInParent >= parent.children.size() - 1) return null;
787 return (Box)parent.children.elementAt(indexInParent + 1);
791 /** returns our next sibling (parent[ourindex + 1]) */
792 public final Box prevSibling() {
793 if (parent == null) return null;
794 if (parent.children == null) {
795 if (this == parent.firstKid) return null;
798 if (indexInParent == 0) return null;
799 return (Box)parent.children.elementAt(indexInParent - 1);
803 /** Returns the parent of this node */
804 public Box getParent() { return parent; }
806 /** Returns ith child */
807 public Box getChild(int i) {
808 if (children == null) {
809 if (firstKid == null) return null;
810 if (i >= numKids) return null;
811 if (i == numKids - 1) return firstKid.prevSibling;
813 for(int j=0; j<i; j++) cur = cur.nextSibling;
816 if (i >= children.size() || i < 0) return null;
817 return (Box)children.elementAt(i);
821 /** Returns the number of children */
822 public int numChildren() {
823 if (children == null) {
824 if (firstKid == null) return 0;
826 for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
829 return children.size();
833 /** Returns our index in our parent */
834 public int getIndexInParent() {
835 if (parent == null) return 0;
836 if (parent.children == null) {
838 for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
841 return indexInParent;
845 /** returns the root of the surface that this box belongs to */
846 public final Box getRoot() {
847 if (parent == null && surface != null) return this;
848 if (parent == null) return null;
849 return parent.getRoot();
852 public void recompute_font() {
854 MARK_FOR_REFLOW_this;
857 if (text == null) return;
858 for(int i=0; i<text.length(); i++) {
859 Glyph g = Glyph.getCachedGlyph(font, fontsize, text.charAt(i));
861 final int fontsize_final = fontsize;
862 final Res font_final = font;
863 final char c = text.charAt(i);
864 ThreadMessage.newthread(new JS.Callable() {
865 public Object call(JS.Array args) {
866 Glyph.renderGlyph(font_final, fontsize_final, c);
868 Box b = Box.this; MARK_FOR_REFLOW_b;
873 textwidth += g.advance;
874 textheight = g.max_ascent;
877 } catch (Exception e) {
883 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
885 static final int min(int a, int b) { if (a<b) return a; else return b; }
886 static final float min(float a, float b) { if (a<b) return a; else return b; }
887 static final double min(double a, double b) { if (a<b) return a; else return b; }
888 static final int max(int a, int b) { if (a>b) return a; else return b; }
889 static final float max(float a, float b) { if (a>b) return a; else return b; }
890 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; }
891 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; }
892 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
893 final boolean inside(int x, int y) { return (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
895 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
896 public static Box whoIs(Box cur, int x, int y) {
898 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
902 // WARNING: this method is called from the event-queueing
903 // thread -- it may run concurrently with ANY part of XWT, and
904 // is UNSYNCHRONIZED for performance reasons. BE CAREFUL
907 if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
908 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
910 for(int i=cur.numChildren() - 1; i>=0; i--) {
911 Box child = cur.getChild(i);
912 if (child == null) continue; // since this method is unsynchronized, we have to double-check
915 if (!((child.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
925 * A helper class for properties of Box which require special
928 * To avoid excessive use of String.equals(), the Box.get() and
929 * Box.put() methods employ a Hash keyed on property names that
930 * require special handling. The value stored in the Hash is an
931 * instance of an anonymous subclass of SpecialBoxProperty, which knows
932 * how to handle get()s and put()s for that property name. There
933 * should be one anonymous subclass of SpecialBoxProperty for each
934 * specially-handled property on Box.
936 static class SpecialBoxProperty {
938 SpecialBoxProperty() { }
940 /** stores instances of SpecialBoxProperty; keyed on property name */
941 static Hash specialBoxProperties = new Hash(200, 3);
943 /** this method defines the behavior when the property is get()ed from b */
944 Object get(Box b) { return null; }
946 /** this method defines the behavior when the property is put() to b */
947 void put(Box b, Object value) { }
949 /** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
950 void put(String name, Box b, Object value) { put(b, value); }
953 specialBoxProperties.put("fill", new ColorBoxProperty() {
954 public void put(Box b, Object value) {
955 if (value != null && value instanceof Res) {
956 b.image = Picture.fromRes((Res)value);
957 b.minwidth = b.image.getWidth();
958 b.minheight = b.image.getHeight();
964 public int getColor(Box b) { return b.fillcolor; }
965 public void putColor(Box b, int argb) { b.fillcolor = argb; }
967 specialBoxProperties.put("textcolor", new ColorBoxProperty() {
968 public int getColor(Box b) { return b.textcolor; }
969 public void putColor(Box b, int argb) { b.textcolor = argb; }
971 specialBoxProperties.put("strokecolor", new ColorBoxProperty() {
972 public int getColor(Box b) { return b.strokecolor; }
973 public void putColor(Box b, int argb) { b.strokecolor = argb; }
976 specialBoxProperties.put("text", new SpecialBoxProperty() {
977 public Object get(Box b) { return b.text; }
978 public void put(Box b, Object value) {
979 String t = value == null ? "null" : value.toString();
980 if (t.equals(b.text)) return;
983 if (b.textwidth != 0 || b.textheight != 0) MARK_FOR_REFLOW_b;
984 b.textwidth = b.textheight = 0;
991 specialBoxProperties.put("path", new SpecialBoxProperty() {
992 public Object get(Box b) { throw new JS.Exn("cannot read from the path property"); }
993 public void put(Box b, Object value) {
994 String t = value == null ? "null" : value.toString();
995 b.path = value == null ? null : VectorGraphics.parseVectorPath(value.toString());
1000 specialBoxProperties.put("transform", new SpecialBoxProperty() {
1001 public void put(Box b, Object value) {
1002 String t = value.toString().trim();
1003 b.transform = VectorGraphics.Affine.identity();
1004 while (t.length() > 0) {
1005 if (t.startsWith("skewX(")) {
1008 } else if (t.startsWith("shear(")) {
1009 // FIXME: nonstandard; remove this
1010 b.transform.multiply(VectorGraphics.Affine.shear(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
1012 } else if (t.startsWith("skewY(")) {
1015 } else if (t.startsWith("rotate(")) {
1016 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
1017 if (sub.indexOf(',') != -1) {
1018 float angle = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
1019 sub = sub.substring(sub.indexOf(',') + 1);
1020 float cx = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
1021 sub = sub.substring(sub.indexOf(',') + 1);
1022 float cy = Float.parseFloat(sub);
1023 b.transform.multiply(VectorGraphics.Affine.translate(cx, cy));
1024 b.transform.multiply(VectorGraphics.Affine.rotate(angle));
1025 b.transform.multiply(VectorGraphics.Affine.translate(-1 * cx, -1 * cy));
1027 b.transform.multiply(VectorGraphics.Affine.rotate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
1030 } else if (t.startsWith("translate(")) {
1031 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
1032 if (sub.indexOf(',') > -1) {
1033 b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
1034 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
1036 b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))), 0));
1039 } else if (t.startsWith("flip(")) {
1040 String which = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
1041 b.transform.multiply(VectorGraphics.Affine.flip(which.equals("horizontal"), which.equals("vertical")));
1043 } else if (t.startsWith("scale(")) {
1044 String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
1045 if (sub.indexOf(',') > -1) {
1046 b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
1047 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
1049 b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
1050 Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(',')))));
1053 } else if (t.startsWith("matrix(")) {
1054 // FIXME: is this mapped right?
1055 float d[] = new float[6];
1056 StringTokenizer st = new StringTokenizer(t, ",", false);
1057 for(int i=0; i<6; i++)
1058 d[i] = Float.parseFloat(st.nextToken());
1059 b.transform.multiply(new VectorGraphics.Affine(d[0], d[1], d[2], d[3], d[4], d[5]));
1061 t = t.substring(t.indexOf(')') + 1).trim();
1066 public Object get(Box b) { return b.transform.toString(); }
1069 specialBoxProperties.put("font", new SpecialBoxProperty() {
1070 public Object get(Box b) { return b.font; }
1071 public void put(Box b, Object value) {
1072 // FIXME: translate value into a resource if it is a string
1073 b.font = value == null ? null : (Res)value;
1075 b.flags |= FONT_CHANGED_FLAG;
1080 specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
1081 public Object get(Box b) { return b.font; }
1082 public void put(Box b, Object value) {
1083 if (b.fontsize == stoi(value)) return;
1084 b.fontsize = stoi(value);
1086 b.flags |= FONT_CHANGED_FLAG;
1091 specialBoxProperties.put("strokewidth", new SpecialBoxProperty() {
1092 public Object get(Box b) { return new Integer(b.strokewidth); }
1093 public void put(Box b, Object value) {
1094 if (b.strokewidth == stoi(value)) return;
1095 b.strokewidth = stoi(value);
1099 specialBoxProperties.put("align", new SpecialBoxProperty() {
1100 public Object get(Box b) {
1101 switch(b.flags & ALIGN_FLAGS) {
1102 case (ALIGN_TOP_FLAG | ALIGN_LEFT_FLAG): return "topleft";
1103 case (ALIGN_BOTTOM_FLAG | ALIGN_LEFT_FLAG): return "bottomleft";
1104 case (ALIGN_TOP_FLAG | ALIGN_RIGHT_FLAG): return "topright";
1105 case (ALIGN_BOTTOM_FLAG | ALIGN_RIGHT_FLAG): return "bottomright";
1106 case ALIGN_TOP_FLAG: return "top";
1107 case ALIGN_BOTTOM_FLAG: return "bottom";
1108 case ALIGN_LEFT_FLAG: return "left";
1109 case ALIGN_RIGHT_FLAG: return "right";
1110 case 0: return "center";
1111 default: throw new Error("invalid alignment flags: " + (b.flags & ALIGN_FLAGS));
1114 public void put(Box b, Object value) {
1115 b.flags &= ~ALIGN_FLAGS;
1116 if (value == null || value.equals("center")) { b.flags &= ALIGN_FLAGS; }
1117 else if (value.equals("topleft")) { b.flags |= ALIGN_TOP_FLAG | ALIGN_LEFT_FLAG; }
1118 else if (value.equals("bottomleft")) { b.flags |= ALIGN_BOTTOM_FLAG | ALIGN_LEFT_FLAG; }
1119 else if (value.equals("topright")) { b.flags |= ALIGN_TOP_FLAG | ALIGN_RIGHT_FLAG; }
1120 else if (value.equals("bottomright")) { b.flags |= ALIGN_BOTTOM_FLAG | ALIGN_RIGHT_FLAG; }
1121 else if (value.equals("top")) { b.flags |= ALIGN_TOP_FLAG; }
1122 else if (value.equals("bottom")) { b.flags |= ALIGN_BOTTOM_FLAG; }
1123 else if (value.equals("left")) { b.flags |= ALIGN_LEFT_FLAG; }
1124 else if (value.equals("right")) { b.flags |= ALIGN_RIGHT_FLAG; }
1125 else Log.logJS("invalid alignment specifier \"" + value + "\"");
1130 specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
1131 public Object get(Box b) { return b; }
1132 public void put(Box b, Object value) {
1133 if (value == null) b.remove();
1134 else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
1138 specialBoxProperties.put("orient", new SpecialBoxProperty() {
1139 public Object get(Box b) {
1140 Log.log(this, "warning: the orient property is deprecated");
1141 if (b.redirect == null) return "horizontal";
1142 else if (b.redirect != b) return get(b.redirect);
1143 else if (b.cols == 1) return "vertical";
1144 else if (b.rows == 1) return "horizontal";
1147 public void put(Box b, Object value) {
1148 Log.log(this, "warning: the orient property is deprecated");
1149 if (value == null) return;
1150 if (b.redirect == null) return;
1151 if (b.redirect != b) { put(b.redirect, value); return; }
1152 if (value.equals("vertical")) {
1153 if (b.rows == 0) return;
1154 b.rows = 0; b.cols = 1;
1155 } else if (value.equals("horizontal")) {
1156 if (b.cols == 0) return;
1157 b.cols = 0; b.rows = 1;
1159 Log.log(this, "invalid value put to orient property: " + value);
1163 specialBoxProperties.put("shrink", new SpecialBoxProperty() {
1164 public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
1165 public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
1168 //#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
1169 specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
1170 public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
1171 public void put(Box b, Object value) {
1172 boolean newshrink = stob(value);
1173 if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
1174 if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
1181 specialBoxProperties.put("x", new SpecialBoxProperty() {
1182 public Object get(Box b) {
1183 if (b.surface == null) return new Integer(0);
1184 if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
1185 return new Integer(b.x);
1187 public void put(Box b, Object value) {
1188 if (!((b.flags & NOTPACKED_FLAG) != 0) && (b.parent != null || b.surface == null)) return;
1189 int x = stoi(value);
1190 if (x == b.x) return;
1193 if (b.parent == null && b.surface != null) b.surface.setLocation();
1200 //#repeat width/height height/width minwidth/minheight maxwidth/maxheight true/false
1201 specialBoxProperties.put("width", new SpecialBoxProperty() {
1202 public Object get(Box b) { return new Integer(b.width); }
1203 public void put(Box b, Object value) {
1204 int newval = stoi(value);
1205 if (b.parent == null && b.surface != null) {
1206 // hack to circumvent #repeat
1207 int other = b.height;
1208 if (true) b.surface.setSize(newval, other);
1209 else b.surface.setSize(other, newval);
1212 if (b.minwidth == newval && b.maxwidth == newval) return;
1213 b.minwidth = b.maxwidth = newval;
1219 //#repeat cols/rows rows/cols
1220 specialBoxProperties.put("cols", new SpecialBoxProperty() {
1221 public Object get(Box b) { return new Double(b.cols); }
1222 public void put(Box b, Object value) {
1223 if (b.cols == stoi(value)) return;
1224 b.cols = stoi(value);
1225 if (b.cols == 0 && b.rows == 0) b.rows = 1;
1226 if (b.cols != 0 && b.rows != 0) b.rows = 0;
1231 //#repeat colspan/rowspan
1232 specialBoxProperties.put("colspan", new SpecialBoxProperty() {
1233 public Object get(Box b) { return new Double(b.colspan); }
1234 public void put(Box b, Object value) {
1235 if (b.colspan == stoi(value)) return;
1236 b.colspan = stoi(value);
1242 specialBoxProperties.put("tile", new SpecialBoxProperty() {
1243 public Object get(Box b) { return ((b.flags & TILE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1244 public void put(Box b, Object value) {
1245 if (((b.flags & TILE_FLAG) != 0) == stob(value)) return;
1246 if (stob(value)) b.flags |= TILE_FLAG; else b.flags &= ~TILE_FLAG;
1250 specialBoxProperties.put("noclip", new SpecialBoxProperty() {
1251 public Object get(Box b) { return ((b.flags & NOCLIP_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1252 public void put(Box b, Object value) {
1253 if (((b.flags & NOCLIP_FLAG) != 0) == stob(value)) return;
1254 if (stob(value)) b.flags |= NOCLIP_FLAG; else b.flags &= ~NOCLIP_FLAG;
1259 specialBoxProperties.put("visible", new SpecialBoxProperty() {
1260 public Object get(Box b) {
1261 for (Box cur = b; cur != null; cur = cur.parent) {
1262 if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.FALSE; }
1263 return Boolean.TRUE;
1265 public void put(Box b, Object value) {
1266 if (!stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
1267 if (!stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
1268 if (b.parent == null) {
1269 if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
1272 MARK_FOR_REFLOW_b_parent;
1273 b.parent.dirty(b.x, b.y, b.width, b.height);
1277 specialBoxProperties.put("packed", new SpecialBoxProperty() {
1278 public Object get(Box b) { return ((b.flags & NOTPACKED_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1279 public void put(Box b, Object value) {
1280 if (stob(value) == ((b.flags & NOTPACKED_FLAG) == 0)) return;
1281 if (!stob(value)) b.flags |= NOTPACKED_FLAG; else b.flags &= ~NOTPACKED_FLAG;
1282 if ((b.flags & NOTPACKED_FLAG) != 0) { b.x = 0; b.y = 0; }
1283 if (b.parent != null) MARK_FOR_REFLOW_b_parent;
1286 specialBoxProperties.put("image", new SpecialBoxProperty() {
1287 public Object get(Box b) { return b.image == null ? null : b.image.res; }
1288 public void put(Box b, Object value) {
1289 if (value == null) {
1291 } else if (value instanceof Res) {
1292 b.image = Picture.fromRes((Res)value);
1296 b.minwidth = min(b.maxwidth, max(b.minwidth, b.image == null ? 0 : b.image.getWidth()));
1297 b.minheight = min(b.maxheight, max(b.minheight, b.image == null ? 0 : b.image.getHeight()));
1303 //#repeat globalx/globaly x/y
1304 specialBoxProperties.put("globalx", new SpecialBoxProperty() {
1305 public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
1306 public void put(Box b, Object value) {
1307 if (b.surface == null || b.parent == null) return;
1308 b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
1314 specialBoxProperties.put("cursor", new SpecialBoxProperty() {
1315 public Object get(Box b) { return b.cursor; }
1316 public void put(Box b, Object value) {
1317 b.cursor = (String)value;
1318 if (b.surface == null) return;
1320 // see if we need to update the surface cursor
1321 Surface surface = b.getRoot().surface;
1322 String tempcursor = surface.cursor;
1323 b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
1324 if (surface.cursor != tempcursor) surface.syncCursor();
1328 //#repeat mousex/mousey x/y
1329 specialBoxProperties.put("mousex", new SpecialBoxProperty() {
1330 public Object get(Box b) {
1331 Surface surface = b.getRoot().surface;
1332 if (surface == null) return new Integer(0);
1333 int mousex = surface.mousex;
1334 for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
1335 return new Integer(mousex);
1340 specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
1341 public Object get(Box b) {
1342 return ((b.flags & MOUSEINSIDE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
1345 specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
1346 public Object get(Box b) {
1347 if (b.redirect == null) return new Integer(0);
1348 if (b.redirect != b) return get(b.redirect);
1349 return new Integer(b.numChildren());
1352 SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
1353 public void put(String name, Box b, Object value) {
1354 Surface surface = b.getRoot().surface;
1355 if (surface == null) return;
1356 int mousex = surface.mousex;
1357 int mousey = surface.mousey;
1358 for(Box c = b.parent; c != null && c.parent != null; c = c.parent) {
1362 for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
1363 if (c.inside(mousex - c.x, mousey - c.y)) {
1368 if (b.parent != null) b.parent.put(name, value);
1371 specialBoxProperties.put("Press1", mouseEventHandler);
1372 specialBoxProperties.put("Press2", mouseEventHandler);
1373 specialBoxProperties.put("Press3", mouseEventHandler);
1374 specialBoxProperties.put("Release1", mouseEventHandler);
1375 specialBoxProperties.put("Release2", mouseEventHandler);
1376 specialBoxProperties.put("Release3", mouseEventHandler);
1377 specialBoxProperties.put("Click1", mouseEventHandler);
1378 specialBoxProperties.put("Click2", mouseEventHandler);
1379 specialBoxProperties.put("Click3", mouseEventHandler);
1380 specialBoxProperties.put("DoubleClick1", mouseEventHandler);
1381 specialBoxProperties.put("DoubleClick2", mouseEventHandler);
1382 specialBoxProperties.put("DoubleClick3", mouseEventHandler);
1384 specialBoxProperties.put("root", new SpecialBoxProperty() {
1385 public void put(Box b, Object value) {
1386 if (stob(value)) b.flags |= ISROOT_FLAG;
1387 else b.flags &= ~ISROOT_FLAG;
1389 public Object get(Box b) {
1390 if (b.parent == null || ((b.flags & ISROOT_FLAG) != 0)) return b;
1391 else return get(b.parent);
1394 specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
1395 public Object get(Box b) {
1396 if (b.parent == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
1399 public void put(Box b, Object value) {
1400 if (b.surface == null) return;
1401 boolean val = stob(value);
1402 if (b.parent == null && b.surface.minimized != val) b.surface.setMinimized(val);
1406 specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
1407 public Object get(Box b) {
1408 if (b.parent == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
1411 public void put(Box b, Object value) {
1412 if (b.surface == null) return;
1413 boolean val = stob(value);
1414 if (b.parent == null && b.surface.maximized != val) b.surface.setMaximized(val);
1418 specialBoxProperties.put("toback", new SpecialBoxProperty() {
1419 public void put(Box b, Object value) {
1420 if (b.parent == null && stob(value) && b.surface != null) b.surface.toBack();
1424 specialBoxProperties.put("tofront", new SpecialBoxProperty() {
1425 public void put(Box b, Object value) {
1426 if (b.parent == null && stob(value) && b.surface != null) b.surface.toFront();
1430 specialBoxProperties.put("Close", new SpecialBoxProperty() {
1431 public void put(Box b, Object value) {
1432 if (b.parent == null && b.surface != null) b.surface.dispose(true);
1436 // these are all do-nothings; just to prevent space from getting taken up in the params Hash.
1437 specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
1438 specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
1439 specialBoxProperties.put("PosChange", new SpecialBoxProperty());
1440 specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
1442 //#repeat minwidth/minheight maxwidth/maxheight
1443 specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
1444 public Object get(Box b) { return new Integer(b.minwidth); }
1445 public void put(Box b, Object value) {
1446 if (stoi(value) == b.minwidth) return;
1447 b.minwidth = stoi(value);
1451 specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
1452 public Object get(Box b) { return new Integer(b.maxwidth); }
1453 public void put(Box b, Object value) {
1454 if (stoi(value) == b.maxwidth) return;
1455 b.maxwidth = stoi(value);
1461 specialBoxProperties.put("redirect", new SpecialBoxProperty() {
1462 public void put(Box b, Object value) {
1463 if (b.redirect != b) Log.log(this, "cannot change the redirect of a box once it is set");
1464 else if (value == null) b.redirect = null;
1466 Box b2 = (Box)value;
1467 while(b2 != b && b2 != null) b2 = b2.parent;
1468 if (b2 == null) Log.log(this, "a box's redirect must be one of its descendants");
1469 b.redirect = (Box)value;
1472 public Object get(Box b) {
1473 if (b.redirect == null) return null;
1474 if (b.redirect == b) return Boolean.TRUE;
1475 return get(b.redirect);
1479 // FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
1480 specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
1481 public void put(Box b, Object value) {
1482 if (b.surface != null) b.surface.setTitleBarText(value.toString());
1483 b.put_("titlebar", value);
1485 public Object get(Box b) { return b.get_("titlebar"); }
1488 specialBoxProperties.put("icon", new SpecialBoxProperty() {
1491 public void put(Box b, Object value) {
1492 b.put_("icon", value);
1493 if (b.surface == null) return;
1494 Picture pic = ImageDecoder.getPicture(value.toString());
1495 if (pic != null) b.surface.setIcon(pic);
1496 else if (Log.on) Log.log(this, "unable to load icon " + value);
1498 public Object get(Box b) { return b.get_("icon"); }
1503 private static abstract class ColorBoxProperty extends SpecialBoxProperty {
1504 public abstract int getColor(Box b);
1505 public abstract void putColor(Box b, int argb);
1506 public Object get(Box b) {
1507 if ((getColor(b) & 0xFF000000) == 0) return null;
1508 String red = Integer.toHexString((getColor(b) & 0x00FF0000) >> 16);
1509 String green = Integer.toHexString((getColor(b) & 0x0000FF00) >> 8);
1510 String blue = Integer.toHexString(getColor(b) & 0x000000FF);
1511 if (red.length() < 2) red = "0" + red;
1512 if (blue.length() < 2) blue = "0" + blue;
1513 if (green.length() < 2) green = "0" + green;
1514 return "#" + red + green + blue;
1516 public void put(Box b, Object value) {
1517 int newcolor = getColor(b);
1518 String s = value == null ? null : value.toString();
1519 if (value == null) newcolor = 0x00000000;
1520 else if (s.length() > 0 && s.charAt(0) == '#')
1522 newcolor = 0xFF000000 |
1523 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
1524 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
1525 Integer.parseInt(s.substring(5, 7), 16);
1526 } catch (NumberFormatException e) {
1527 Log.log(this, "invalid color " + s);
1530 else if (org.xwt.translators.SVG.colors.get(s) != null)
1531 newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
1532 if (newcolor == getColor(b)) return;
1533 putColor(b, newcolor);
1539 /** helper that converts a String to a boolean according to JavaScript coercion rules */
1540 public static boolean stob(Object o) {
1541 if (o == null) return false;
1542 return Boolean.TRUE.equals(o) || "true".equals(o);
1545 /** helper that converts a String to an int according to JavaScript coercion rules */
1546 public static int stoi(Object o) {
1547 if (o == null) return 0;
1548 if (o instanceof Integer) return ((Integer)o).intValue();
1551 if (!(o instanceof String)) s = o.toString();
1554 try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
1555 catch (NumberFormatException e) { return 0; }