2 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
5 // FEATURE: reflow before allowing js to read from width/height
6 // FEATURE: fastpath for rows=1/cols=1
7 // FEATURE: mark to reflow starting with a certain child
8 // FEATURE: separate mark_for_reflow and mark_for_resize
9 // FEATURE: make all methods final
10 // FEATURE: use a linked list for the "frontier" when packing
11 // FEATURE: or else have a way to mark a column "same as last one"?
12 // FEATURE: reintroduce surface.abort
18 import org.xwt.util.*;
19 import org.xwt.translators.*;
23 * Encapsulates the data for a single XWT box as well as all layout
27 * <p>The rendering process consists of four phases; each requires
28 * one DFS pass over the tree</p>
29 * <ol><li> <b>repacking</b>: children of a box are packed into columns
30 * and rows according to their colspan/rowspan attributes and
32 * <ol><li> <b>reconstraining</b>: Minimum and maximum sizes of columns are computed.
33 * <li> <b>resizing</b>: width/height and x/y positions of children
34 * are assigned, and PosChange/SizeChanges are triggered.
35 * <li> <b>repainting</b>: children draw their content onto the PixelBuffer.
38 * The first three passes together are called the <i>reflow</i> phase.
39 * Reflowing is done in a seperate pass since PosChanges and
40 * SizeChanges trigger an Surface.abort; if rendering were done in the same
41 * pass, rendering work done prior to the Surface.abort would be wasted.
43 public final class Box extends JSScope implements Scheduler.Task {
45 // Macros //////////////////////////////////////////////////////////////////////
48 //#define MARK_REPACK for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
49 //#define MARK_REPACK_b for(Box b2 = b; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
50 //#define MARK_REPACK_parent for(Box b2 = parent; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
51 //#define MARK_REFLOW for(Box b2 = this; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
52 //#define MARK_REFLOW_b for(Box b2 = b; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
53 //#define MARK_RESIZE for(Box b2 = this; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
54 //#define MARK_RESIZE_b for(Box b2 = b; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
55 //#define CHECKSET_SHORT(prop) short nu = (short)toInt(value); if (nu == prop) break; prop = nu;
56 //#define CHECKSET_INT(prop) int nu = toInt(value); if (nu == prop) break; prop = nu;
57 //#define CHECKSET_FLAG(flag) boolean nu = toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
58 //#define CHECKSET_BOOLEAN(prop) boolean nu = toBoolean(value); if (nu == prop) break; prop = nu;
59 //#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&value.equals(prop))) break; prop=(String)value;
61 void mark_for_repack() { MARK_REPACK; }
63 protected Box() { super(null); }
65 static Hash boxToCursor = new Hash(500, 3);
66 public static final int MAX_LENGTH = Integer.MAX_VALUE;
67 static final Font DEFAULT_FONT;
71 try { f = Font.getFont((Stream)Main.builtin.get("fonts/vera/Vera.ttf"), 10); }
72 catch(JSExn e) { Log.info(Box.class, "should never happen: "+e); }
77 // box properties can not be trapped
78 static final String[] props = new String[] {
79 "shrink", "hshrink", "vshrink", "x", "y", "width", "height", "cols", "rows",
80 "colspan", "rowspan", "align", "visible", "packed", "globalx", "globaly",
81 "minwidth", "maxwidth", "minheight", "maxheight", "indexof", "thisbox", "clip",
82 "numchildren", "redirect", "cursor", "mouse"
86 // events can have write traps, but not read traps
87 static final String[] events = new String[] {
88 "Press1", "Press2", "Press3",
89 "Release1", "Release2", "Release3",
90 "Click1", "Click2", "Click3",
91 "DoubleClick1", "DoubleClick2", "DoubleClick3",
92 "Enter", "Leave", "Move",
93 "KeyPressed", "KeyReleased", "PosChange", "SizeChange",
94 "childadded", "childremoved",
95 "Focused", "Maximized", "Minimized", "Close",
96 "icon", "titlebar", "toback", "tofront"
99 // Flags //////////////////////////////////////////////////////////////////////
101 static final int MOUSEINSIDE = 0x00000001;
102 static final int VISIBLE = 0x00000002;
103 static final int PACKED = 0x00000004;
104 static final int HSHRINK = 0x00000008;
105 static final int VSHRINK = 0x00000010;
106 static final int BLACK = 0x00000020; // for red-black code
108 static final int FIXED = 0x00000040;
109 static final boolean ROWS = true;
110 static final boolean COLS = false;
112 static final int ISROOT = 0x00000080;
113 static final int REPACK = 0x00000100;
114 static final int REFLOW = 0x00000200;
115 static final int RESIZE = 0x00000400;
116 static final int RECONSTRAIN = 0x00000800;
117 static final int ALIGN_TOP = 0x00001000;
118 static final int ALIGN_BOTTOM = 0x00002000;
119 static final int ALIGN_LEFT = 0x00004000;
120 static final int ALIGN_RIGHT = 0x00008000;
121 static final int ALIGNS = 0x0000f000;
122 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
123 static final int CLIP = 0x00020000;
124 static final int STOP_UPWARD_PROPAGATION = 0x00040000;
127 // Instance Data //////////////////////////////////////////////////////////////////////
131 int flags = VISIBLE | PACKED | REPACK | REFLOW | RESIZE | FIXED /* ROWS */ | STOP_UPWARD_PROPAGATION | CLIP;
133 private String text = null;
134 private Font font = DEFAULT_FONT;
135 private Picture texture = null;
136 private short strokewidth = 1;
137 public int fillcolor = 0x00000000;
138 private int strokecolor = 0xFF000000;
140 private int aspect = 0;
142 // specified directly by user
143 public LENGTH minwidth = 0;
144 public LENGTH maxwidth = MAX_LENGTH;
145 public LENGTH minheight = 0;
146 public LENGTH maxheight = MAX_LENGTH;
147 private short rows = 1;
148 private short cols = 0;
149 private short rowspan = 1;
150 private short colspan = 1;
152 // computed during reflow
153 private short row = 0;
154 private short col = 0;
157 public LENGTH width = 0;
158 public LENGTH height = 0;
159 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
160 private LENGTH contentheight = 0;
163 private VectorGraphics.VectorPath path = null;
164 private VectorGraphics.Affine transform = null;
165 private VectorGraphics.RasterPath rpath = null;
166 private VectorGraphics.Affine rtransform = null;
169 // Instance Methods /////////////////////////////////////////////////////////////////////
172 /** invoked when a resource needed to render ourselves finishes loading */
173 public void perform() throws JSExn {
175 // FIXME; we can't assume that just because we were performed the image is loaded.
176 // as external events have occured, check the state of box
177 if (texture != null) {
178 if (texture.isLoaded) { minwidth = min(texture.width, maxwidth); minheight = min(texture.height, maxheight); }
179 else { JS res = texture.stream; texture = null; throw new JSExn("image not found: "+res); }
188 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
189 public Surface getSurface() { return Surface.fromBox(getRoot()); }
191 // FEATURE: use cx2/cy2 format
192 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
193 public void dirty() { dirty(0, 0, width, height); }
194 public void dirty(int x, int y, int w, int h) {
195 for(Box cur = this; cur != null; cur = cur.parent) {
196 // x and y have a different meaning on the root box
197 if (cur.parent != null && cur.test(CLIP)) {
198 w = min(x + w, cur.width) - max(x, 0);
199 h = min(y + h, cur.height) - max(y, 0);
203 if (w <= 0 || h <= 0) return;
204 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
211 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
213 // static stuff so we don't have to keep reallocating
214 private static int[] numRowsInCol = new int[65535];
215 private static LENGTH[] colWidth = new LENGTH[65535];
216 private static LENGTH[] colMaxWidth = new LENGTH[65535];
217 private static LENGTH[] rowHeight = new LENGTH[65535];
218 private static LENGTH[] rowMaxHeight = new LENGTH[65535];
219 static { for(int i=0; i<rowMaxHeight.length; i++) { rowMaxHeight[i] = MAX_LENGTH; colMaxWidth[i] = MAX_LENGTH; } }
221 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
222 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
224 /** pack the boxes into rows and columns; also computes contentwidth */
226 for(Box child = getChild(0); child != null; child = child.nextSibling()) child.repack();
228 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan
229 if (test(FIXED) == COLS) {
231 for(Box child = firstPackedChild(); child != null; r++) {
232 for(short c=0, numclear=0; child != null && c < cols; c++) {
233 if (numRowsInCol[c] > r) { numclear = 0; continue; }
234 if (c != 0 && c + min(cols, child.colspan) - numclear > cols) break;
235 if (++numclear < min(cols, child.colspan)) continue;
236 for(int i=c - numclear + 1; i <= c; i++) numRowsInCol[i] += child.rowspan;
237 child.col = (short)(c - numclear + 1); child.row = r;
238 rows = (short)max(rows, child.row + child.rowspan);
239 child = child.nextPackedSibling();
243 for(int i=0; i<cols; i++) numRowsInCol[i] = 0;
247 //#repeat contentwidth/contentheight colWidth/rowHeight colspan/rowspan col/row cols/rows minwidth/minheight \
248 // textwidth/textheight maxwidth/maxheight
250 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
251 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
252 for(int i=0; i<cols; i++) { contentwidth += colWidth[i]; colWidth[i] = 0; }
253 contentwidth = bound(minwidth, max(font == null || text == null ? 0 : font.textwidth(text), contentwidth), maxwidth);
257 void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
258 if (x != this.x || y != this.y || width != this.width || height != this.height) {
259 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
260 boolean poschange = (this.x != x || this.y != y) && getTrap("PosChange") != null;
262 int thisx = parent == null ? 0 : this.x;
263 int thisy = parent == null ? 0 : this.y;
265 // we can't reenable this until we track
266 // surface-relative sizes; imagine the case of a clear
267 // surface with nonclear children
270 if (texture == null && (text == null || text.equals(""))) {
271 if ((fillcolor & 0xff000000) == 0) break;
272 // FEATURE: more optimizations here
273 if (this.x == x && this.y == y) {
274 Box who = (parent == null ? this : parent);
275 who.dirty(thisx+min(this.width,width), thisy, Math.abs(width-this.width), max(this.height, height));
276 who.dirty(thisx, thisy+min(this.height,height), min(this.width, width), Math.abs(height-this.height));
281 (parent == null ? this : parent).dirty(thisx, thisy, this.width, this.height);
282 this.width = width; this.height = height; this.x = x; this.y = y;
285 //this.width = width; this.height = height; this.x = x; this.y = y;
286 if (sizechange) putAndTriggerTrapsAndCatchExceptions("SizeChange", T);
287 if (poschange) putAndTriggerTrapsAndCatchExceptions("PosChange", T);
291 void resize_children() {
293 //#repeat col/row colspan/rowspan contentwidth/contentheight x/y width/height colMaxWidth/rowMaxHeight colWidth/rowHeight \
294 // HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight colWidth/rowHeight x_slack/y_slack
295 // PHASE 1: compute column min/max sizes
297 for(int i=0; i<cols; i++) x_slack -= colWidth[i];
298 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
299 for(int i=child.col; i < child.col + child.colspan; i++) {
300 x_slack += colWidth[i];
301 colWidth[i] = max(colWidth[i], child.contentwidth / child.colspan);
302 x_slack -= colWidth[i];
303 colMaxWidth[i] = min(colMaxWidth[i], child.test(HSHRINK) ? child.contentwidth : child.maxwidth) / child.colspan;
306 // PHASE 2: hand out slack
307 for(int startslack = 0; x_slack > 0 && cols > 0 && startslack != x_slack;) {
308 int increment = max(1, x_slack / cols);
309 startslack = x_slack;
310 for(short col=0; col < cols; col++) {
311 // FIXME: double check this
312 int diff = min(min(colMaxWidth[col], colWidth[col] + increment) - colWidth[col], x_slack);
314 colWidth[col] += diff;
319 // Phase 3: assign childrens' actual sizes
320 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
321 if (!child.test(VISIBLE)) continue;
322 int child_width, child_height, child_x, child_y;
323 if (!child.test(PACKED)) {
326 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - child_x);
327 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - child_y);
328 child_width = max(child.minwidth, child_width);
329 child_height = max(child.minheight, child_height);
332 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
333 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
334 // colWidth/rowHeight child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP
336 for(int i = child.col; i < child.col + child.colspan; i++) unbounded += colWidth[i];
337 child_width = min(unbounded, child.test(HSHRINK) ? child.contentwidth : child.maxwidth);
338 child_x = test(ALIGN_RIGHT) ? x_slack : test(ALIGN_LEFT) ? 0 : x_slack / 2;
339 for(int i=0; i < child.col; i++) child_x += colWidth[i];
340 if (child_width > unbounded) child_x -= (child_width - unbounded) / 2;
343 child.resize(child_x, child_y, child_width, child_height);
347 for(int i=0; i<cols; i++) { colWidth[i] = 0; colMaxWidth[i] = MAX_LENGTH; }
348 for(int i=0; i<rows; i++) { rowHeight[i] = 0; rowMaxHeight[i] = MAX_LENGTH; }
350 for(Box child = getChild(0); child != null; child = child.nextSibling())
352 child.resize_children();
357 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
359 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
360 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
361 if (!test(VISIBLE)) return;
362 int globalx = parentx + (parent == null ? 0 : x);
363 int globaly = parenty + (parent == null ? 0 : y);
365 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
368 cx1 = max(cx1, parent == null ? 0 : globalx);
369 cy1 = max(cy1, parent == null ? 0 : globaly);
370 cx2 = min(cx2, globalx + width);
371 cy2 = min(cy2, globaly + height);
372 if (cx2 <= cx1 || cy2 <= cy1) return;
375 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
376 buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
378 // FIXME: do aspect in here
379 if (texture != null && texture.isLoaded)
380 for(int x = globalx; x < cx2; x += texture.width)
381 for(int y = globaly; y < cy2; y += texture.height)
382 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
384 if (text != null && !text.equals("") && font != null)
385 if (font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2, null) == -1)
386 font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2, this);
388 for(Box b = getChild(0); b != null; b = b.nextSibling())
389 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
393 // Methods to implement org.xwt.js.JS //////////////////////////////////////
395 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
396 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
397 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
398 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
400 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
401 if (nargs != 1 || !"indexof".equals(method)) return super.callMethod(method, a0, a1, a2, rest, nargs);
403 if (b.parent != this)
404 return (redirect == null || redirect == this) ?
406 redirect.callMethod(method, a0, a1, a2, rest, nargs);
407 return N(b.getIndexInParent());
410 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
412 protected boolean isTrappable(Object key, boolean isRead) {
413 if (key == null) return false;
414 else if (key instanceof String) {
415 // not allowed to trap box properties, and no read traps on events
416 String name = (String)key;
417 for (int i=0; i < props.length; i++) if (name.equals(props[i])) return false;
418 if (isRead) for (int i=0; i < events.length; i++) if (name.equals(events[i])) return false;
424 public Object get(Object name) throws JSExn {
425 if (name instanceof Number)
426 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
429 case "surface": return parent == null ? null : parent.getAndTriggerTraps("surface");
430 case "indexof": return METHOD;
431 case "text": return text;
432 case "path": throw new JSExn("cannot read from the path property");
433 case "fill": return colorToString(fillcolor);
434 case "strokecolor": return colorToString(strokecolor);
435 case "textcolor": return colorToString(strokecolor);
436 case "font": return font == null ? null : font.stream;
437 case "fontsize": return font == null ? N(10) : N(font.pointsize);
438 case "strokewidth": return N(strokewidth);
439 case "align": return alignToString();
440 case "thisbox": return this;
441 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
442 case "hshrink": return B(test(HSHRINK));
443 case "vshrink": return B(test(VSHRINK));
444 case "aspect": return N(aspect);
445 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : N(x);
446 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : N(y);
447 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
448 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
449 case "colspan": return N(colspan);
450 case "rowspan": return N(rowspan);
451 case "width": return N(width);
452 case "height": return N(height);
453 case "minwidth": return N(minwidth);
454 case "maxwidth": return N(maxwidth);
455 case "minheight": return N(minheight);
456 case "maxheight": return N(maxheight);
457 case "clip": return B(test(CLIP));
458 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
459 case "packed": return B(test(PACKED));
460 case "globalx": return N(localToGlobalX(0));
461 case "globaly": return N(localToGlobalY(0));
462 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
464 if (getSurface() == null) return null;
465 if (getSurface()._mousex == Integer.MAX_VALUE)
466 throw new JSExn("you cannot read from the box.mouse property in background thread context");
468 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(treeSize()) : redirect.get("numchildren");
469 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
470 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
471 default: return super.get(name);
473 throw new Error("unreachable"); // unreachable
476 private class Mouse extends JS.Cloneable {
477 public Object get(Object key) {
479 case "x": return N(globalToLocalX(getSurface()._mousex));
480 case "y": return N(globalToLocalY(getSurface()._mousey));
482 // this might not get recomputed if we change mousex/mousey...
483 case "inside": return B(test(MOUSEINSIDE));
489 void setMaxWidth(Object value) {
490 do { CHECKSET_INT(maxwidth); MARK_RESIZE; } while(false);
491 if (parent == null && getSurface() != null) getSurface().pendingWidth = maxwidth;
493 void setMaxHeight(Object value) {
494 do { CHECKSET_INT(maxheight); MARK_RESIZE; } while(false);
495 if (parent == null && getSurface() != null) getSurface().pendingHeight = maxheight;
498 public void put(Object name, Object value) throws JSExn {
499 if (name instanceof Number) { put(toInt(name), value); return; }
501 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
502 case "strokecolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
503 case "textcolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
504 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
505 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
506 case "shrink": put("hshrink", value); put("vshrink", value);
507 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
508 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
509 case "width": put("maxwidth", value); put("minwidth", value); MARK_RESIZE;
510 case "height": put("maxheight", value); put("minheight", value); MARK_RESIZE;
511 case "maxwidth": setMaxWidth(value);
512 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
513 if (parent == null && getSurface() != null)
514 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
515 case "maxheight": setMaxHeight(value);
516 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
517 if (parent == null && getSurface() != null)
518 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
519 case "colspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
520 case "rowspan": CHECKSET_SHORT(rowspan); MARK_REPACK_parent;
521 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); MARK_REPACK;
522 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); MARK_REPACK;
523 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
524 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
525 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
526 case "aspect": CHECKSET_INT(aspect); dirty();
527 case "globalx": put("x", N(globalToLocalX(toInt(value))));
528 case "globaly": put("y", N(globalToLocalY(toInt(value))));
529 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
530 case "cursor": setCursor(value);
531 case "fill": setFill(value);
533 int mousex = toInt(((JS)value).get("x"));
534 int mousey = toInt(((JS)value).get("y"));
535 getSurface()._mousex = localToGlobalX(mousex);
536 getSurface()._mousey = localToGlobalY(mousey);
537 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
538 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
539 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
540 case "redirect": if (redirect == this) redirect = (Box)value; else Log.info(this, "redirect can only be set once");
542 if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
543 font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
546 case "fontsize": font = Font.getFont(font == null ? null : font.stream, toInt(value)); MARK_RESIZE; dirty();
547 case "x": if (parent==null && Surface.fromBox(this)!=null) { CHECKSET_INT(x); } else { if (test(PACKED) && parent != null) return; dirty(); CHECKSET_INT(x); dirty(); MARK_RESIZE; dirty(); }
548 case "y": if (parent==null && Surface.fromBox(this)!=null) { CHECKSET_INT(y); } else { if (test(PACKED) && parent != null) return; dirty(); CHECKSET_INT(y); dirty(); MARK_RESIZE; dirty(); }
550 if (getSurface() != null && value != null) getSurface().setTitleBarText(JS.toString(value));
551 super.put(name,value);
553 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
554 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
555 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
556 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
557 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
558 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
559 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
560 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
561 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
562 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
563 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
564 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
565 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
566 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
567 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
568 case "Enter": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
569 case "Leave": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
571 case "_Move": propagateDownward(name, value, false);
572 case "_Press1": propagateDownward(name, value, false);
573 case "_Press2": propagateDownward(name, value, false);
574 case "_Press3": propagateDownward(name, value, false);
575 case "_Release1": propagateDownward(name, value, false);
576 case "_Release2": propagateDownward(name, value, false);
577 case "_Release3": propagateDownward(name, value, false);
578 case "_Click1": propagateDownward(name, value, false);
579 case "_Click2": propagateDownward(name, value, false);
580 case "_Click3": propagateDownward(name, value, false);
581 case "_DoubleClick1": propagateDownward(name, value, false);
582 case "_DoubleClick2": propagateDownward(name, value, false);
583 case "_DoubleClick3": propagateDownward(name, value, false);
584 case "_KeyPressed": propagateDownward(name, value, false);
585 case "_KeyReleased": propagateDownward(name, value, false);
587 case "PosChange": return;
588 case "SizeChange": return;
589 case "childadded": return;
590 case "childremoved": return;
592 case "thisbox": if (value == null) removeSelf();
594 default: super.put(name, value);
598 private String alignToString() {
599 switch(flags & ALIGNS) {
600 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
601 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
602 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
603 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
604 case ALIGN_TOP: return "top";
605 case ALIGN_BOTTOM: return "bottom";
606 case ALIGN_LEFT: return "left";
607 case ALIGN_RIGHT: return "right";
608 case 0: return "center";
609 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
613 private void setAlign(Object value) {
615 case "center": clear(ALIGNS);
616 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
617 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
618 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
619 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
620 case "top": set(ALIGN_TOP);
621 case "bottom": set(ALIGN_BOTTOM);
622 case "left": set(ALIGN_LEFT);
623 case "right": set(ALIGN_RIGHT);
624 default: JS.log("invalid alignment \"" + value + "\"");
628 private void setCursor(Object value) {
629 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
630 if (value.equals(boxToCursor.get(this))) return;
632 boxToCursor.put(this, value);
633 Surface surface = getSurface();
634 String tempcursor = surface.cursor;
636 //Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
637 if (surface.cursor != tempcursor) surface.syncCursor();
640 private void setFill(Object value) throws JSExn {
642 // FIXME: Check this... does this make it transparent?
645 } else if (value instanceof String) {
646 // FIXME check double set
647 int newfillcolor = stringToColor((String)value);
648 if (newfillcolor == fillcolor) return;
649 fillcolor = newfillcolor;
650 } else if(value instanceof JS) {
651 texture = Picture.load((JS)value, this);
653 throw new JSExn("fill must be null, a String, or a stream, not a " + value.getClass());
658 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
660 * Handles events which propagate down the box tree. If obscured
661 * is set, then we merely check for Enter/Leave.
663 private void propagateDownward(Object name_, Object value, boolean obscured) {
665 String name = (String)name_;
666 if (getSurface() == null) return;
667 int x = globalToLocalX(getSurface()._mousex);
668 int y = globalToLocalY(getSurface()._mousey);
669 boolean wasinside = test(MOUSEINSIDE);
670 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
671 if (!wasinside && isinside) { set(MOUSEINSIDE); putAndTriggerTrapsAndCatchExceptions("Enter", T); }
672 if (wasinside && !isinside) { clear(MOUSEINSIDE); putAndTriggerTrapsAndCatchExceptions("Leave", T); }
674 boolean found = false;
675 if (wasinside || isinside)
676 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
677 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
678 if (obscured || !child.inside(x - child.x, y - child.y)) {
679 child.propagateDownward(name, value, true);
682 child.clear(STOP_UPWARD_PROPAGATION);
683 child.putAndTriggerTrapsAndCatchExceptions(name, value);
685 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
687 if (child.inside(x - child.x, y - child.y))
688 if (name.equals("_Move")) obscured = true;
692 if (!obscured && !found)
693 if (!name.equals("_Move") || wasinside) putAndTriggerTrapsAndCatchExceptions(name.substring(1), value);
696 private static int stringToColor(String s) {
697 // FIXME support three-char strings by doubling digits
698 if (s == null) return 0x00000000;
699 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
700 else if (s.length() == 7 && s.charAt(0) == '#') try {
703 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
704 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
705 Integer.parseInt(s.substring(5, 7), 16);
706 } catch (NumberFormatException e) {
707 Log.info(Box.class, "invalid color " + s);
710 else return 0; // FEATURE: error?
713 private static String colorToString(int argb) {
714 if ((argb & 0xFF000000) == 0) return null;
715 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
716 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
717 String blue = Integer.toHexString(argb & 0x000000FF);
718 if (red.length() < 2) red = "0" + red;
719 if (blue.length() < 2) blue = "0" + blue;
720 if (green.length() < 2) green = "0" + green;
721 return "#" + red + green + blue;
724 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
725 public static Box whoIs(Box cur, int x, int y) {
727 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
731 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
732 // ANY part of XWT, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
734 if (!cur.test(VISIBLE)) return null;
735 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
737 for(int i=cur.treeSize() - 1; i>=0; i--) {
738 Box child = cur.getChild(i);
739 if (child == null) continue; // since this method is unsynchronized, we have to double-check
742 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
752 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
754 static short min(short a, short b) { if (a<b) return a; else return b; }
755 static int min(int a, int b) { if (a<b) return a; else return b; }
756 static float min(float a, float b) { if (a<b) return a; else return b; }
758 static short max(short a, short b) { if (a>b) return a; else return b; }
759 static int max(int a, int b) { if (a>b) return a; else return b; }
760 static float max(float a, float b) { if (a>b) return a; else return b; }
762 static int min(int a, int b, int c) { if (a<=b && a<=c) return a; else if (b<=c && b<=a) return b; else return c; }
763 static int max(int a, int b, int c) { if (a>=b && a>=c) return a; else if (b>=c && b>=a) return b; else return c; }
764 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
765 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
767 void set(int mask) { flags |= mask; }
768 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
769 void clear(int mask) { flags &= ~mask; }
770 boolean test(int mask) { return ((flags & mask) == mask); }
773 // Tree Handling //////////////////////////////////////////////////////////////////////
775 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
776 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
777 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
778 public final Box getChild(int i) {
779 if (i < 0) return null;
780 if (i >= treeSize()) return null;
781 return (Box)getNode(i);
784 // Tree Manipulation /////////////////////////////////////////////////////////////////////
787 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
788 Surface surface = Surface.fromBox(this);
789 if (surface != null) surface.dispose(true);
792 /** remove the i^th child */
793 public void removeChild(int i) {
797 b.clear(MOUSEINSIDE);
801 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
804 public void put(int i, Object value) throws JSExn {
807 if (value != null && !(value instanceof Box)) {
808 if (Log.on) JS.warn("attempt to set a numerical property on a box to a non-box");
812 if (redirect == null) {
813 if (value == null) putAndTriggerTrapsAndCatchExceptions("childremoved", getChild(i));
814 else JS.warn("attempt to add/remove children to/from a node with a null redirect");
816 } else if (redirect != this) {
817 if (value != null) putAndTriggerTrapsAndCatchExceptions("childadded", value);
818 redirect.put(i, value);
820 Box b = (Box)redirect.get(new Integer(i));
821 if (b != null) putAndTriggerTrapsAndCatchExceptions("childremoved", b);
824 } else if (value == null) {
825 if (i < 0 || i > treeSize()) return;
828 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
833 // check if box being moved is currently target of a redirect
834 for(Box cur = b.parent; cur != null; cur = cur.parent)
835 if (cur.redirect == b) {
836 if (Log.on) JS.warn("attempt to move a box that is the target of a redirect");
840 // check for recursive ancestor violation
841 for(Box cur = this; cur != null; cur = cur.parent)
843 if (Log.on) JS.warn("attempt to make a node a parent of its own ancestor");
844 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
848 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
852 // need both of these in case child was already uncalc'ed
857 putAndTriggerTrapsAndCatchExceptions("childadded", b);
861 void putAndTriggerTrapsAndCatchExceptions(Object name, Object val) {
863 putAndTriggerTraps(name, val);
865 JS.log("caught js exception while putting to trap \""+name+"\"");
867 } catch (Exception e) {
868 JS.log("caught exception while putting to trap \""+name+"\"");
883 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
884 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
885 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
886 // FIXME: separate offset_x needed for the path
888 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
889 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
890 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
891 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
892 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
893 int left = min(min(x1, x2), min(x3, x4));
894 int right = max(max(x1, x2), max(x3, x4));
895 contentwidth = max(contentwidth, right - left);
896 offset_x = -1 * left;
903 if (rtransform == null) rpath = null;
904 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
906 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
907 rtransform = a.copy();
909 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
910 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
911 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
917 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
918 if (transform != null) a2.multiply(transform);
919 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));