1 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
4 // FEATURE: reflow before allowing js to read from width/height
5 // FEATURE: fastpath for rows=1/cols=1
6 // FEATURE: mark to reflow starting with a certain child
7 // FEATURE: separate mark_for_reflow and mark_for_resize
8 // FEATURE: make all methods final
9 // FEATURE: use a linked list for the "frontier" when packing
10 // FEATURE: or else have a way to mark a column "same as last one"?
11 // FEATURE: reintroduce surface.abort
17 import org.xwt.util.*;
18 import org.xwt.translators.*;
22 * Encapsulates the data for a single XWT box as well as all layout
26 * <p>The rendering process consists of four phases; each requires
27 * one DFS pass over the tree</p>
28 * <ol><li> <b>repacking</b>: children of a box are packed into columns
29 * and rows according to their colspan/rowspan attributes and
31 * <ol><li> <b>reconstraining</b>: Minimum and maximum sizes of columns are computed.
32 * <li> <b>resizing</b>: width/height and x/y positions of children
33 * are assigned, and PosChange/SizeChanges are triggered.
34 * <li> <b>repainting</b>: children draw their content onto the PixelBuffer.
37 * The first three passes together are called the <i>reflow</i> phase.
38 * Reflowing is done in a seperate pass since PosChanges and
39 * SizeChanges trigger an Surface.abort; if rendering were done in the same
40 * pass, rendering work done prior to the Surface.abort would be wasted.
42 public abstract class Box extends JSScope implements JSTrap.JSTrappable {
44 // Macros //////////////////////////////////////////////////////////////////////
47 //#define MARK_REPACK for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
48 //#define MARK_REPACK_b for(Box b2 = b; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
49 //#define MARK_REPACK_parent for(Box b2 = parent; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
50 //#define MARK_REFLOW for(Box b2 = this; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
51 //#define MARK_REFLOW_b for(Box b2 = b; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
52 //#define MARK_RESIZE for(Box b2 = this; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
53 //#define MARK_RESIZE_b for(Box b2 = b; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
54 //#define CHECKSET_SHORT(prop) short nu = (short)toInt(value); if (nu == prop) break; prop = nu;
55 //#define CHECKSET_INT(prop) int nu = toInt(value); if (nu == prop) break; prop = nu;
56 //#define CHECKSET_FLAG(flag) boolean nu = toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
57 //#define CHECKSET_BOOLEAN(prop) boolean nu = toBoolean(value); if (nu == prop) break; prop = nu;
58 //#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&value.equals(prop))) break; prop=(String)value;
60 protected Box() { super(null); }
62 static Hash boxToCursor = new Hash(500, 3);
63 public static final int MAX_LENGTH = Integer.MAX_VALUE;
65 // Flags //////////////////////////////////////////////////////////////////////
67 static final int MOUSEINSIDE = 0x00000001;
68 static final int VISIBLE = 0x00000002;
69 static final int PACKED = 0x00000004;
70 static final int HSHRINK = 0x00000008;
71 static final int VSHRINK = 0x00000010;
72 static final int BLACK = 0x00000020; // for red-black code
74 static final int FIXED = 0x00000040;
75 static final boolean ROWS = true;
76 static final boolean COLS = false;
78 static final int ISROOT = 0x00000080;
79 static final int REPACK = 0x00000100;
80 static final int REFLOW = 0x00000200;
81 static final int RESIZE = 0x00000400;
82 static final int RECONSTRAIN = 0x00000800;
83 static final int ALIGN_TOP = 0x00001000;
84 static final int ALIGN_BOTTOM = 0x00002000;
85 static final int ALIGN_LEFT = 0x00004000;
86 static final int ALIGN_RIGHT = 0x00008000;
87 static final int ALIGNS = 0x0000f000;
88 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
89 static final int NOCLIP = 0x00020000;
92 // Instance Data //////////////////////////////////////////////////////////////////////
96 int flags = VISIBLE | PACKED;
98 private String text = null;
99 private Font font = null;
100 private Picture texture;
101 private short strokewidth = 1;
102 private int fillcolor = 0x00000000;
103 private int strokecolor = 0xFF000000;
105 // specified directly by user
106 public LENGTH minwidth = 0;
107 public LENGTH maxwidth = 0;
108 public LENGTH minheight = 0;
109 public LENGTH maxheight = 0;
110 private short rows = 1;
111 private short cols = 0;
112 private short rowspan = 1;
113 private short colspan = 1;
115 // computed during reflow
116 private short row = 0;
117 private short col = 0;
120 public LENGTH width = 0;
121 public LENGTH height = 0;
122 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
123 private LENGTH contentheight = 0;
126 private VectorGraphics.VectorPath path = null;
127 private VectorGraphics.Affine transform = null;
128 private VectorGraphics.RasterPath rpath = null;
129 private VectorGraphics.Affine rtransform = null;
132 // Instance Methods /////////////////////////////////////////////////////////////////////
134 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
135 public Surface getSurface() { return Surface.fromBox(getRoot()); }
137 // FEATURE: use cx2/cy2 format
138 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
139 public final void dirty() { dirty(0, 0, width, height); }
140 public final void dirty(int x, int y, int w, int h) {
141 for(Box cur = this; cur != null; cur = cur.parent) {
142 if (!cur.test(NOCLIP)) {
143 w = min(x + w, cur.width) - max(x, 0);
144 h = min(y + h, cur.height) - max(y, 0);
148 if (w <= 0 || h <= 0) return;
149 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
155 public void putAndTriggerTraps(Object key, Object value) {
159 /** update MOUSEINSIDE, check for Enter/Leave/Move */
160 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
161 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
162 boolean wasinside = test(MOUSEINSIDE);
163 boolean isinside = test(VISIBLE) && inside(mousex, mousey) && !forceleave;
164 if (isinside) set(MOUSEINSIDE); else clear(MOUSEINSIDE);
165 if (!wasinside && !isinside) return;
167 if (isinside && test(CURSOR)) getRoot().cursor = (String)boxToCursor.get(this);
168 if (!wasinside && isinside && getTrap("Enter") != null) putAndTriggerJSTraps("Enter", T);
169 else if (wasinside && !isinside && getTrap("Leave") != null) putAndTriggerJSTraps("Leave", T);
170 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && getTrap("Move")!= null)
171 putAndTriggerJSTraps("Move", T);
172 for(Box b = getChild(numchildren - 1); b != null; b = b.prevSibling()) {
173 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
174 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
179 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
181 // static stuff so we don't have to keep reallocating
182 private static int[] numRowsInCol = new int[65535];
183 private LENGTH[] colWidth = new LENGTH[65535];
184 private LENGTH[] colMaxWidth = new LENGTH[65535];
185 private LENGTH[] rowHeight = new LENGTH[65535];
186 private LENGTH[] rowMaxHeight = new LENGTH[65535];
188 final Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
189 final Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
191 /** only for use on the root box */
192 void reflow(int new_width, int new_height) {
194 new_width = bound(max(contentwidth, minwidth), new_width, test(HSHRINK) ? max(contentwidth, minwidth) : maxwidth);
195 new_height = bound(max(contentheight, minheight), new_height, test(VSHRINK) ? max(contentheight, minheight) : maxheight);
196 resize(x, y, new_width, new_height);
199 /** pack the boxes into rows and columns; also computes contentwidth */
201 for(Box child = getChild(0); child != null; child = child.nextSibling()) child.repack();
203 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan
204 if (test(FIXED) == COLS) {
205 short r = 0; short rows = 0;
206 for(Box child = firstPackedChild(); child != null; r++)
207 for(short col=0, numclear=0; child != null && col < cols;) {
208 if (numRowsInCol[col] > r) continue;
209 if (col != 0 && col + min(cols, child.colspan) > cols) break;
210 if (++numclear < min(cols, child.colspan)) continue;
211 for(int i=col - numclear + 1; i <= col; i++) numRowsInCol[i] += child.rowspan;
212 child.col = col; child.row = r;
213 child = child.nextPackedSibling();
214 rows = (short)max(rows, child.row + child.rowspan);
216 for(int i=0; i<cols; i++) numRowsInCol[i] = 0;
220 //#repeat contentwidth/contentheight colWidth/rowHeight colspan/rowspan col/row cols/rows minwidth/minheight \
221 // textwidth/textheight maxwidth/maxheight
223 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
224 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
225 for(int i=0; i<cols; i++) { contentwidth += colWidth[i]; colWidth[i] = 0; }
227 contentwidth = bound(minwidth, max(font.textwidth(text), contentwidth), maxwidth);
231 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
232 // FEATURE reimplement, but we're destroying this
234 if (x != this.x || y != this.y || width != this.width || height != this.height) {
236 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
237 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
238 boolean poschange = (this.x != x || this.y != y) && getTrap("PosChange") != null;
239 this.width = width; this.height = height; this.x = x; this.y = y;
241 try { if (sizechange) putAndTriggerJSTraps("SizeChange", T); Surface.abort = true; }
242 catch (Exception e) { Log.log(this, e); }
243 try { if (poschange) pputAndTriggerJSTraps("PosChange", T); Surface.abort = true; }
244 catch (Exception e) { Log.log(this, e); }
248 if (numchildren > 0) resize_children();
251 private void resize_children() {
253 //#repeat col/row colspan/rowspan contentwidth/contentheight x/y width/height \
254 // HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight
256 // PHASE 1: compute column min/max sizes
258 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
259 for(int i=child.col; i < child.col + child.colspan; i++) {
260 slack += colWidth[i];
261 colWidth[i] = max(colWidth[i], child.contentwidth / child.colspan);
262 slack -= colWidth[i];
263 colMaxWidth[i] = max(colMaxWidth[i], child.test(HSHRINK) ? child.contentwidth : child.maxwidth) / child.colspan;
266 // PHASE 2: hand out slack
267 for(int startslack = 0; slack > 0 && startslack != slack;) {
268 int increment = max(1, slack / cols);
270 for(short col=0; col < cols && slack > 0; col++) {
271 int diff = min(colMaxWidth[col], colWidth[col] + increment) - colWidth[col];
273 colWidth[col] += diff;
277 for(Box child = getChild(0); child != null; child = child.nextPackedSibling()) {
279 for(int i = child.col; i < child.col + child.colspan; i++) unbounded += colWidth[i];
280 child.width = bound(child.contentwidth, unbounded, child.test(HSHRINK) ? child.contentwidth : child.maxwidth);
281 child.x = test(ALIGN_RIGHT) ? slack : test(ALIGN_LEFT) ? slack / 2 : 0;
282 for(int i=0; i < child.col; i++) child.x += colWidth[i];
283 if (child.width < unbounded) child.x += (child.width - unbounded) / 2;
287 for(int i=0; i<colWidth.length; i++) colWidth[i] = 0;
288 for(int i=0; i<colMaxWidth.length; i++) colMaxWidth[i] = MAX_LENGTH;
291 // Phase 3: assign childrens' actual sizes
292 for(Box child = getChild(0); child != null; child = child.nextSibling())
293 if (!test(VISIBLE)) continue;
294 else if (!child.test(PACKED))
295 child.resize(child.x, child.y,
296 child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - child.x),
297 child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - child.y));
298 else child.resize(child.x, child.y, child.width, child.height);
303 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
305 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
306 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
307 if (!test(VISIBLE)) return;
308 int globalx = parentx + (parent == null ? 0 : x);
309 int globaly = parenty + (parent == null ? 0 : y);
311 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
313 cx1 = max(cx1, parent == null ? 0 : globalx);
314 cy1 = max(cy1, parent == null ? 0 : globaly);
315 cx2 = min(cx2, parent == null ? 0 : globalx + width);
316 cy2 = min(cy2, parent == null ? 0 : globaly + height);
317 if (cx2 <= cx1 || cy2 <= cy1) return;
320 if ((fillcolor & 0xFF000000) != 0x00000000)
321 buf.fillJSTrapezoid(globalx, globalx + width, globaly, globalx, globalx + width, globaly + height, fillcolor);
324 for(int x = globalx; x < cx2; x += texture.getWidth())
325 for(int y = globaly; y < cy2; y += texture.getHeight())
326 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
328 if (text != null && !text.equals("") && font != null)
329 if (font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2, null) == -1)
330 font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2,
331 new Scheduler.Task() { public void perform() { Box b = Box.this; MARK_REFLOW_b; dirty(); }});
333 for(Box b = getChild(0); b != null; b = b.nextSibling())
334 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
338 // Methods to implement org.xwt.js.JS //////////////////////////////////////
340 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
341 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
342 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
343 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
345 public Object call(Object method, JSArray args) throws JS.Exn {
346 if (!"indexof".equals(method)) return null;
347 Box b = (Box)args.elementAt(0);
348 if (b.parent != this) return (redirect == null || redirect == this) ? N(-1) : redirect.call(method, args);
349 return N(b.getIndexInParent());
352 /** to be filled in by the Tree implementation */
353 abstract void put(int i, Object value);
354 public int numchildren = 0;
355 abstract public int getIndexInParent();
356 abstract public Box getChild(int i);
357 abstract public Box nextSibling();
358 abstract public Box prevSibling();
359 abstract public void remove();
360 abstract Box swapPosition(Box x, Box y);
362 public Object get(Object name) { return get(name, false); }
363 public Object get(Object name, boolean ignoretraps) {
364 if (name instanceof Number)
365 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
368 case "text": return text;
369 case "path": throw new JS.Exn("cannot read from the path property");
370 case "fill": return colorToString(fillcolor);
371 case "strokecolor": return colorToString(strokecolor);
372 case "textcolor": return colorToString(strokecolor);
373 case "font": return font == null ? null : font.res;
374 case "fontsize": return font == null ? N(10) : N(font.pointsize);
375 case "strokewidth": return N(strokewidth);
376 case "align": return alignToString();
377 case "thisbox": return this;
378 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
379 case "hshrink": return B(test(HSHRINK));
380 case "vshrink": return B(test(VSHRINK));
381 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : N(x);
382 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : N(y);
383 case "width" return N(width);
384 case "height" return N(height);
385 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
386 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
387 case "colspan": return N(colspan);
388 case "rowspan": return N(rowspan);
389 case "noclip": return B(test(NOCLIP));
390 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
391 case "packed": return B(test(PACKED));
392 case "globalx": return N(localToGlobalX(0));
393 case "globaly": return N(localToGlobalY(0));
394 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
395 case "mousex": { Surface s = getSurface(); return N(s == null ? 0 : globalToLocalX(s.mousex)); }
396 case "mousey": { Surface s = getSurface(); return N(s == null ? 0 : globalToLocalY(s.mousey)); }
397 case "mouseinside": return B(test(MOUSEINSIDE));
398 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(numchildren) : redirect.get("numchildren");
399 case "minwidth": return N(minwidth);
400 case "maxwidth": return N(maxwidth);
401 case "minheight": return N(minheight);
402 case "maxheight": return N(maxheight);
403 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
404 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
405 default: return super.get(name);
410 public void put(Object name, Object value) { put(name, value, false); }
411 public void put(Object name, Object value, boolean ignoretraps) {
412 if (name instanceof Number) { put(toInt(name), value); return; }
415 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
416 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
417 case "thisbox": if (value == null) remove();
418 case "shrink": put("hshrink", value); put("vshrink", value);
419 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
420 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
421 case "width": CHECKSET_INT(width); MARK_RESIZE;
422 case "maxwidth": CHECKSET_INT(maxwidth); MARK_RESIZE;
423 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
424 case "height": CHECKSET_INT(height); MARK_RESIZE;
425 case "maxheight": CHECKSET_INT(maxheight); MARK_RESIZE;
426 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
427 case "colspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
428 case "rowspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
429 case "rows": CHECKSET_SHORT(rows); MARK_REPACK; // FEATURE: error checking
430 case "cols": CHECKSET_SHORT(cols); MARK_REPACK; // FEATURE: error checking
431 case "noclip": CHECKSET_FLAG(NOCLIP); if (parent == null) dirty(); else parent.dirty();
432 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
433 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
434 case "globalx": put("x", N(globalToLocalX(toInt(value))));
435 case "globaly": put("y", N(globalToLocalY(toInt(value))));
436 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
437 case "cursor": setCursor(value);
438 case "fill": setFill(value);
439 case "Press1": mouseEvent("Press1", value);
440 case "Press2": mouseEvent("Press2", value);
441 case "Press3": mouseEvent("Press3", value);
442 case "Release1": mouseEvent("Release1", value);
443 case "Release2": mouseEvent("Release2", value);
444 case "Release3": mouseEvent("Release3", value);
445 case "Click1": mouseEvent("Click1", value);
446 case "Click2": mouseEvent("Click2", value);
447 case "Click3": mouseEvent("Click3", value);
448 case "DoubleClick1": mouseEvent("DoubleClick1", value);
449 case "DoubleClick2": mouseEvent("DoubleClick2", value);
450 case "DoubleClick3": mouseEvent("DoubleClick3", value);
451 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
452 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
453 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
454 case "toback": if (parent == null && getSurface() != null && toBoolean(value)) { getSurface().toBack(); }
455 case "tofront": if (parent == null && getSurface() != null && toBoolean(value)) { getSurface().toFront(); }
456 case "redirect": if (redirect == this) redirect = (Box)value; else Log.log(this, "redirect can only be set once");
457 case "font": font = value == null ? null : Font.getFont((Res)value, font == null ? 10 : font.pointsize); MARK_RESIZE; dirty();
458 case "fontsize": font = Font.getFont(font == null ? null : font.res, toInt(value)); MARK_RESIZE; dirty();
459 case "x": if (test(PACKED) && parent != null) return; CHECKSET_INT(x); dirty(); MARK_RESIZE; dirty();
460 case "y": if (test(PACKED) && parent != null) return; CHECKSET_INT(y); dirty(); MARK_RESIZE; dirty();
461 case "KeyPressed": // prevent stuff from hitting the Hash
462 case "KeyReleased": // prevent stuff from hitting the Hash
463 case "PosChange": // prevent stuff from hitting the Hash
464 case "SizeChange": // prevent stuff from hitting the Hash
465 case "childadded": // prevent stuff from hitting the Hash
466 case "childremoved": // prevent stuff from hitting the Hash
470 private String alignToString() {
471 switch(flags & ALIGNS) {
472 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
473 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
474 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
475 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
476 case ALIGN_TOP: return "top";
477 case ALIGN_BOTTOM: return "bottom";
478 case ALIGN_LEFT: return "left";
479 case ALIGN_RIGHT: return "right";
480 case 0: return "center";
481 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
485 private void setAlign(Object value) {
487 case "center": clear(ALIGNS);
488 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
489 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
490 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
491 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
492 case "top": set(ALIGN_TOP);
493 case "bottom": set(ALIGN_BOTTOM);
494 case "left": set(ALIGN_LEFT);
495 case "right": set(ALIGN_RIGHT);
496 default: Log.logJS("invalid alignment \"" + value + "\"");
500 private void setCursor(Object value) {
501 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
502 if (value.equals(boxToCursor.get(this))) return;
504 boxToCursor.put(this, value);
505 Surface surface = getSurface();
506 String tempcursor = surface.cursor;
507 Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
508 if (surface.cursor != tempcursor) surface.syncCursor();
511 private void setFill(Object value) {
512 if (value == null || !(value instanceof Res)) return;
513 Picture pic = Picture.fromRes((Res)value, null);
516 minwidth = texture.getWidth();
517 minheight = texture.getHeight();
520 } else Picture.fromRes((Res)value, new Callback() { public Object call(Object arg) {
521 texture = (Picture)arg;
522 minwidth = texture.getWidth();
523 minheight = texture.getHeight();
524 Box b = Box.this; MARK_REFLOW_b;
530 private void mouseEvent(String name, Object value) {
531 Surface surface = getSurface();
532 if (surface == null) return;
533 int mousex = globalToLocalX(surface.mousex);
534 int mousey = globalToLocalY(surface.mousey);
535 for(Box c = prevSibling(); c != null; c = c.prevSibling())
536 if (c.inside(mousex - c.x, mousey - c.y)) { JSTrap.putAndTriggerJSTraps(c, name, value); return; }
537 if (parent != null) JSTrap.putAndTriggerJSTraps(parent, name, value);
540 private static int stringToColor(String s) {
541 if (s == null) return 0x00000000;
542 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
543 else if (s.length() > 0 && s.charAt(0) == '#') try {
546 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
547 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
548 Integer.parseInt(s.substring(5, 7), 16);
549 } catch (NumberFormatException e) {
550 Log.log(Box.class, "invalid color " + s);
553 else return 0; // FEATURE: error?
556 private static String colorToString(int argb) {
557 if ((argb & 0xFF000000) == 0) return null;
558 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
559 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
560 String blue = Integer.toHexString(argb & 0x000000FF);
561 if (red.length() < 2) red = "0" + red;
562 if (blue.length() < 2) blue = "0" + blue;
563 if (green.length() < 2) green = "0" + green;
564 return "#" + red + green + blue;
567 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
568 public static Box whoIs(Box cur, int x, int y) {
570 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
574 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
575 // ANY part of XWT, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
577 if (!cur.test(VISIBLE)) return null;
578 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
580 for(int i=cur.numchildren - 1; i>=0; i--) {
581 Box child = cur.getChild(i);
582 if (child == null) continue; // since this method is unsynchronized, we have to double-check
585 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
595 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
597 static final short min(short a, short b) { if (a<b) return a; else return b; }
598 static final int min(int a, int b) { if (a<b) return a; else return b; }
599 static final float min(float a, float b) { if (a<b) return a; else return b; }
601 static final short max(short a, short b) { if (a>b) return a; else return b; }
602 static final int max(int a, int b) { if (a>b) return a; else return b; }
603 static final float max(float a, float b) { if (a>b) return a; else return b; }
605 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; }
606 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; }
607 static final int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
608 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
610 protected final void set(int mask) { flags |= mask; }
611 protected final void clear(int mask) { flags &= ~mask; }
612 protected final boolean test(int mask) { return ((flags & mask) == mask); }
614 protected Box left = null;
615 protected Box right = null;
616 protected Box parent_ = null; // not to be confused with Box.parent_!
617 protected Box rootChild = null;
618 protected abstract Box fixAfterInsertion();
619 protected abstract Box fixAfterDeletion();
620 protected abstract Box rightmost();
621 protected abstract Box leftmost();
622 protected abstract Box rotateLeft();
623 protected abstract Box rotateRight();
634 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
635 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
636 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
637 // FIXME: separate offset_x needed for the path
639 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
640 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
641 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
642 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
643 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
644 int left = min(min(x1, x2), min(x3, x4));
645 int right = max(max(x1, x2), max(x3, x4));
646 contentwidth = max(contentwidth, right - left);
647 offset_x = -1 * left;
654 if (rtransform == null) rpath = null;
655 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
657 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
658 rtransform = a.copy();
660 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
661 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
662 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
668 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
669 if (transform != null) a2.multiply(transform);
670 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));