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 final class Box extends JSScope implements Scheduler.Task {
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 void mark_for_repack() { MARK_REPACK; }
62 protected Box() { super(null); }
64 static Hash boxToCursor = new Hash(500, 3);
65 public static final int MAX_LENGTH = Integer.MAX_VALUE;
66 static final Font DEFAULT_FONT;
70 try { f = Font.getFont((Stream)Main.builtin.get("fonts/vera/Vera.ttf"), 10); }
71 catch(JSExn e) { Log.info(Box.class, "should never happen: "+e); }
76 // box properties can not be trapped
77 static final String[] props = new String[] {
78 "shrink", "hshrink", "vshrink", "x", "y", "width", "height", "cols", "rows",
79 "colspan", "rowspan", "align", "visible", "packed", "globalx", "globaly",
80 "minwidth", "maxwidth", "minheight", "maxheight", "indexof", "thisbox", "clip",
81 "numchildren", "redirect", "cursor", "mouse"
85 // events can have write traps, but not read traps
86 static final String[] events = new String[] {
87 "Press1", "Press2", "Press3",
88 "Release1", "Release2", "Release3",
89 "Click1", "Click2", "Click3",
90 "DoubleClick1", "DoubleClick2", "DoubleClick3",
91 "Enter", "Leave", "Move",
92 "KeyPressed", "KeyReleased", "PosChange", "SizeChange",
93 "childadded", "childremoved",
94 "Focused", "Maximized", "Minimized", "Close",
95 "icon", "titlebar", "toback", "tofront"
98 // Flags //////////////////////////////////////////////////////////////////////
100 static final int MOUSEINSIDE = 0x00000001;
101 static final int VISIBLE = 0x00000002;
102 static final int PACKED = 0x00000004;
103 static final int HSHRINK = 0x00000008;
104 static final int VSHRINK = 0x00000010;
105 static final int BLACK = 0x00000020; // for red-black code
107 static final int FIXED = 0x00000040;
108 static final boolean ROWS = true;
109 static final boolean COLS = false;
111 static final int ISROOT = 0x00000080;
112 static final int REPACK = 0x00000100;
113 static final int REFLOW = 0x00000200;
114 static final int RESIZE = 0x00000400;
115 static final int RECONSTRAIN = 0x00000800;
116 static final int ALIGN_TOP = 0x00001000;
117 static final int ALIGN_BOTTOM = 0x00002000;
118 static final int ALIGN_LEFT = 0x00004000;
119 static final int ALIGN_RIGHT = 0x00008000;
120 static final int ALIGNS = 0x0000f000;
121 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
122 static final int CLIP = 0x00020000;
123 static final int STOP_UPWARD_PROPAGATION = 0x00040000;
126 // Instance Data //////////////////////////////////////////////////////////////////////
130 int flags = VISIBLE | PACKED | REPACK | REFLOW | RESIZE | FIXED /* ROWS */ | STOP_UPWARD_PROPAGATION | CLIP;
132 private String text = null;
133 private Font font = DEFAULT_FONT;
134 private Picture texture = null;
135 private short strokewidth = 1;
136 public int fillcolor = 0x00000000;
137 private int strokecolor = 0xFF000000;
139 private int aspect = 0;
141 // specified directly by user
142 public LENGTH minwidth = 0;
143 public LENGTH maxwidth = MAX_LENGTH;
144 public LENGTH minheight = 0;
145 public LENGTH maxheight = MAX_LENGTH;
146 private short rows = 1;
147 private short cols = 0;
148 private short rowspan = 1;
149 private short colspan = 1;
151 // computed during reflow
152 private short row = 0;
153 private short col = 0;
156 public LENGTH width = 0;
157 public LENGTH height = 0;
158 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
159 private LENGTH contentheight = 0;
162 private VectorGraphics.VectorPath path = null;
163 private VectorGraphics.Affine transform = null;
164 private VectorGraphics.RasterPath rpath = null;
165 private VectorGraphics.Affine rtransform = null;
168 // Instance Methods /////////////////////////////////////////////////////////////////////
171 /** invoked when a resource needed to render ourselves finishes loading */
172 public void perform() throws JSExn {
174 // FIXME; we can't assume that just because we were performed the image is loaded.
175 // as external events have occured, check the state of box
176 if (texture != null) {
177 if (texture.isLoaded) { minwidth = min(texture.width, maxwidth); minheight = min(texture.height, maxheight); }
178 else { Stream res = texture.res; texture = null; throw new JSExn("image not found: "+res); }
187 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
188 public Surface getSurface() { return Surface.fromBox(getRoot()); }
190 // FEATURE: use cx2/cy2 format
191 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
192 public void dirty() { dirty(0, 0, width, height); }
193 public void dirty(int x, int y, int w, int h) {
194 for(Box cur = this; cur != null; cur = cur.parent) {
195 // x and y have a different meaning on the root box
196 if (cur.parent != null && cur.test(CLIP)) {
197 w = min(x + w, cur.width) - max(x, 0);
198 h = min(y + h, cur.height) - max(y, 0);
202 if (w <= 0 || h <= 0) return;
203 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
210 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
212 // static stuff so we don't have to keep reallocating
213 private static int[] numRowsInCol = new int[65535];
214 private static LENGTH[] colWidth = new LENGTH[65535];
215 private static LENGTH[] colMaxWidth = new LENGTH[65535];
216 private static LENGTH[] rowHeight = new LENGTH[65535];
217 private static LENGTH[] rowMaxHeight = new LENGTH[65535];
218 static { for(int i=0; i<rowMaxHeight.length; i++) { rowMaxHeight[i] = MAX_LENGTH; colMaxWidth[i] = MAX_LENGTH; } }
220 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
221 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
223 /** pack the boxes into rows and columns; also computes contentwidth */
225 for(Box child = getChild(0); child != null; child = child.nextSibling()) child.repack();
227 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan
228 if (test(FIXED) == COLS) {
230 for(Box child = firstPackedChild(); child != null; r++) {
231 for(short c=0, numclear=0; child != null && c < cols; c++) {
232 if (numRowsInCol[c] > r) { numclear = 0; continue; }
233 if (c != 0 && c + min(cols, child.colspan) - numclear > cols) break;
234 if (++numclear < min(cols, child.colspan)) continue;
235 for(int i=c - numclear + 1; i <= c; i++) numRowsInCol[i] += child.rowspan;
236 child.col = (short)(c - numclear + 1); child.row = r;
237 rows = (short)max(rows, child.row + child.rowspan);
238 child = child.nextPackedSibling();
242 for(int i=0; i<cols; i++) numRowsInCol[i] = 0;
246 //#repeat contentwidth/contentheight colWidth/rowHeight colspan/rowspan col/row cols/rows minwidth/minheight \
247 // textwidth/textheight maxwidth/maxheight
249 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
250 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
251 for(int i=0; i<cols; i++) { contentwidth += colWidth[i]; colWidth[i] = 0; }
252 contentwidth = bound(minwidth, max(font == null || text == null ? 0 : font.textwidth(text), contentwidth), maxwidth);
256 void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
257 if (x != this.x || y != this.y || width != this.width || height != this.height) {
258 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
259 boolean poschange = (this.x != x || this.y != y) && getTrap("PosChange") != null;
261 int thisx = parent == null ? 0 : this.x;
262 int thisy = parent == null ? 0 : this.y;
264 // we can't reenable this until we track
265 // surface-relative sizes; imagine the case of a clear
266 // surface with nonclear children
269 if (texture == null && (text == null || text.equals(""))) {
270 if ((fillcolor & 0xff000000) == 0) break;
271 // FEATURE: more optimizations here
272 if (this.x == x && this.y == y) {
273 Box who = (parent == null ? this : parent);
274 who.dirty(thisx+min(this.width,width), thisy, Math.abs(width-this.width), max(this.height, height));
275 who.dirty(thisx, thisy+min(this.height,height), min(this.width, width), Math.abs(height-this.height));
280 (parent == null ? this : parent).dirty(thisx, thisy, this.width, this.height);
281 this.width = width; this.height = height; this.x = x; this.y = y;
284 this.width = width; this.height = height; this.x = x; this.y = y;
285 if (sizechange) putAndTriggerTrapsAndCatchExceptions("SizeChange", T);
286 if (poschange) putAndTriggerTrapsAndCatchExceptions("PosChange", T);
290 void resize_children() {
292 //#repeat col/row colspan/rowspan contentwidth/contentheight x/y width/height colMaxWidth/rowMaxHeight colWidth/rowHeight \
293 // HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight colWidth/rowHeight x_slack/y_slack
294 // PHASE 1: compute column min/max sizes
296 for(int i=0; i<cols; i++) x_slack -= colWidth[i];
297 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
298 for(int i=child.col; i < child.col + child.colspan; i++) {
299 x_slack += colWidth[i];
300 colWidth[i] = max(colWidth[i], child.contentwidth / child.colspan);
301 x_slack -= colWidth[i];
302 colMaxWidth[i] = min(colMaxWidth[i], child.test(HSHRINK) ? child.contentwidth : child.maxwidth) / child.colspan;
305 // PHASE 2: hand out slack
306 for(int startslack = 0; x_slack > 0 && cols > 0 && startslack != x_slack;) {
307 int increment = max(1, x_slack / cols);
308 startslack = x_slack;
309 for(short col=0; col < cols; col++) {
310 // FIXME: double check this
311 int diff = min(min(colMaxWidth[col], colWidth[col] + increment) - colWidth[col], x_slack);
313 colWidth[col] += diff;
318 // Phase 3: assign childrens' actual sizes
319 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
320 if (!child.test(VISIBLE)) continue;
321 int child_width, child_height, child_x, child_y;
322 if (!child.test(PACKED)) {
325 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - child.x);
326 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - child.y);
327 child_width = max(child.minwidth, child_width);
328 child_height = max(child.minheight, child_height);
331 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
332 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
333 // colWidth/rowHeight child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP
335 for(int i = child.col; i < child.col + child.colspan; i++) unbounded += colWidth[i];
336 child_width = min(unbounded, child.test(HSHRINK) ? child.contentwidth : child.maxwidth);
337 child_x = test(ALIGN_RIGHT) ? x_slack : test(ALIGN_LEFT) ? 0 : x_slack / 2;
338 for(int i=0; i < child.col; i++) child_x += colWidth[i];
339 if (child_width > unbounded) child_x -= (child_width - unbounded) / 2;
342 child.resize(child_x, child_y, child_width, child_height);
346 for(int i=0; i<cols; i++) { colWidth[i] = 0; colMaxWidth[i] = MAX_LENGTH; }
347 for(int i=0; i<rows; i++) { rowHeight[i] = 0; rowMaxHeight[i] = MAX_LENGTH; }
349 for(Box child = getChild(0); child != null; child = child.nextSibling())
351 child.resize_children();
356 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
358 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
359 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
360 if (!test(VISIBLE)) return;
361 int globalx = parentx + (parent == null ? 0 : x);
362 int globaly = parenty + (parent == null ? 0 : y);
364 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
367 cx1 = max(cx1, parent == null ? 0 : globalx);
368 cy1 = max(cy1, parent == null ? 0 : globaly);
369 cx2 = min(cx2, globalx + width);
370 cy2 = min(cy2, globaly + height);
371 if (cx2 <= cx1 || cy2 <= cy1) return;
374 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
375 buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
377 // FIXME: do aspect in here
378 if (texture != null && texture.isLoaded)
379 for(int x = globalx; x < cx2; x += texture.width)
380 for(int y = globaly; y < cy2; y += texture.height)
381 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
383 if (text != null && !text.equals("") && font != null)
384 if (font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2, null) == -1)
385 font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2, this);
387 for(Box b = getChild(0); b != null; b = b.nextSibling())
388 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
392 // Methods to implement org.xwt.js.JS //////////////////////////////////////
394 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
395 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
396 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
397 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
399 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
400 if (nargs != 1 || !"indexof".equals(method)) return super.callMethod(method, a0, a1, a2, rest, nargs);
402 if (b.parent != this)
403 return (redirect == null || redirect == this) ?
405 redirect.callMethod(method, a0, a1, a2, rest, nargs);
406 return N(b.getIndexInParent());
409 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
411 protected boolean isTrappable(Object key, boolean isRead) {
412 if (key == null) return false;
413 else if (key instanceof String) {
414 // not allowed to trap box properties, and no read traps on events
415 String name = (String)key;
416 for (int i=0; i < props.length; i++) if (name.equals(props[i])) return false;
417 if (isRead) for (int i=0; i < events.length; i++) if (name.equals(events[i])) return false;
423 public Object get(Object name) throws JSExn {
424 if (name instanceof Number)
425 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
428 case "surface": return parent == null ? null : parent.getAndTriggerTraps("surface");
429 case "indexof": return METHOD;
430 case "text": return text;
431 case "path": throw new JSExn("cannot read from the path property");
432 case "fill": return colorToString(fillcolor);
433 case "strokecolor": return colorToString(strokecolor);
434 case "textcolor": return colorToString(strokecolor);
435 case "font": return font == null ? null : font.res;
436 case "fontsize": return font == null ? N(10) : N(font.pointsize);
437 case "strokewidth": return N(strokewidth);
438 case "align": return alignToString();
439 case "thisbox": return this;
440 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
441 case "hshrink": return B(test(HSHRINK));
442 case "vshrink": return B(test(VSHRINK));
443 case "aspect": return N(aspect);
444 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : N(x);
445 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : N(y);
446 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
447 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
448 case "colspan": return N(colspan);
449 case "rowspan": return N(rowspan);
450 case "width": return N(width);
451 case "height": return N(height);
452 case "minwidth": return N(minwidth);
453 case "maxwidth": return N(maxwidth);
454 case "minheight": return N(minheight);
455 case "maxheight": return N(maxheight);
456 case "clip": return B(test(CLIP));
457 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
458 case "packed": return B(test(PACKED));
459 case "globalx": return N(localToGlobalX(0));
460 case "globaly": return N(localToGlobalY(0));
461 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
463 if (getSurface() == null) return null;
464 if (getSurface()._mousex == Integer.MAX_VALUE)
465 throw new JSExn("you cannot read from the box.mouse property in background thread context");
467 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(treeSize()) : redirect.get("numchildren");
468 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
469 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
470 default: return super.get(name);
472 throw new Error("unreachable"); // unreachable
475 private class Mouse extends JS {
476 public Object get(Object key) {
478 case "x": return N(globalToLocalX(getSurface()._mousex));
479 case "y": return N(globalToLocalY(getSurface()._mousey));
481 // this might not get recomputed if we change mousex/mousey...
482 case "inside": return B(test(MOUSEINSIDE));
488 void setMaxWidth(Object value) {
489 do { CHECKSET_INT(maxwidth); MARK_RESIZE; } while(false);
490 if (parent == null && getSurface() != null) getSurface().pendingWidth = maxwidth;
492 void setMaxHeight(Object value) {
493 do { CHECKSET_INT(maxheight); MARK_RESIZE; } while(false);
494 if (parent == null && getSurface() != null) getSurface().pendingHeight = maxheight;
497 public void put(Object name, Object value) throws JSExn {
498 if (name instanceof Number) { put(toInt(name), value); return; }
500 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
501 case "strokecolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
502 case "textcolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
503 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
504 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
505 case "shrink": put("hshrink", value); put("vshrink", value);
506 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
507 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
508 case "width": put("maxwidth", value); put("minwidth", value); MARK_RESIZE;
509 case "height": put("maxheight", value); put("minheight", value); MARK_RESIZE;
510 case "maxwidth": setMaxWidth(value);
511 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
512 case "maxheight": setMaxHeight(value);
513 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
514 case "colspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
515 case "rowspan": CHECKSET_SHORT(rowspan); MARK_REPACK_parent;
516 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); MARK_REPACK;
517 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); MARK_REPACK;
518 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
519 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
520 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
521 case "aspect": CHECKSET_INT(aspect); dirty();
522 case "globalx": put("x", N(globalToLocalX(toInt(value))));
523 case "globaly": put("y", N(globalToLocalY(toInt(value))));
524 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
525 case "cursor": setCursor(value);
526 case "fill": setFill(value);
528 int mousex = toInt(((JS)value).get("x"));
529 int mousey = toInt(((JS)value).get("y"));
530 getSurface()._mousex = localToGlobalX(mousex);
531 getSurface()._mousey = localToGlobalY(mousey);
532 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
533 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
534 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
535 case "redirect": if (redirect == this) redirect = (Box)value; else Log.info(this, "redirect can only be set once");
537 if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
538 font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
541 case "fontsize": font = Font.getFont(font == null ? null : font.res, toInt(value)); MARK_RESIZE; dirty();
542 case "x": if (parent==null && Surface.fromBox(this)!=null) { CHECKSET_INT(x); } else { if (test(PACKED) && parent != null) return; CHECKSET_INT(x); dirty(); MARK_RESIZE; dirty(); }
543 case "y": if (parent==null && Surface.fromBox(this)!=null) { CHECKSET_INT(y); } else { if (test(PACKED) && parent != null) return; CHECKSET_INT(y); dirty(); MARK_RESIZE; dirty(); }
545 if (getSurface() != null && value != null) getSurface().setTitleBarText(JS.toString(value));
546 super.put(name,value);
548 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
549 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
550 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
551 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
552 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
553 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
554 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
555 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
556 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
557 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
558 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
559 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
560 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
561 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
562 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
563 case "Enter": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
564 case "Leave": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
566 case "_Move": propagateDownward(name, value, false);
567 case "_Press1": propagateDownward(name, value, false);
568 case "_Press2": propagateDownward(name, value, false);
569 case "_Press3": propagateDownward(name, value, false);
570 case "_Release1": propagateDownward(name, value, false);
571 case "_Release2": propagateDownward(name, value, false);
572 case "_Release3": propagateDownward(name, value, false);
573 case "_Click1": propagateDownward(name, value, false);
574 case "_Click2": propagateDownward(name, value, false);
575 case "_Click3": propagateDownward(name, value, false);
576 case "_DoubleClick1": propagateDownward(name, value, false);
577 case "_DoubleClick2": propagateDownward(name, value, false);
578 case "_DoubleClick3": propagateDownward(name, value, false);
579 case "_KeyPressed": propagateDownward(name, value, false);
580 case "_KeyReleased": propagateDownward(name, value, false);
582 case "PosChange": return;
583 case "SizeChange": return;
584 case "childadded": return;
585 case "childremoved": return;
587 case "thisbox": if (value == null) removeSelf();
589 default: super.put(name, value);
593 private String alignToString() {
594 switch(flags & ALIGNS) {
595 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
596 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
597 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
598 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
599 case ALIGN_TOP: return "top";
600 case ALIGN_BOTTOM: return "bottom";
601 case ALIGN_LEFT: return "left";
602 case ALIGN_RIGHT: return "right";
603 case 0: return "center";
604 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
608 private void setAlign(Object value) {
610 case "center": clear(ALIGNS);
611 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
612 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
613 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
614 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
615 case "top": set(ALIGN_TOP);
616 case "bottom": set(ALIGN_BOTTOM);
617 case "left": set(ALIGN_LEFT);
618 case "right": set(ALIGN_RIGHT);
619 default: JS.log("invalid alignment \"" + value + "\"");
623 private void setCursor(Object value) {
624 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
625 if (value.equals(boxToCursor.get(this))) return;
627 boxToCursor.put(this, value);
628 Surface surface = getSurface();
629 String tempcursor = surface.cursor;
631 //Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
632 if (surface.cursor != tempcursor) surface.syncCursor();
635 private void setFill(Object value) throws JSExn {
637 // FIXME: Check this... does this make it transparent?
640 } else if (value instanceof String) {
641 // FIXME check double set
642 int newfillcolor = stringToColor((String)value);
643 if (newfillcolor == fillcolor) return;
644 fillcolor = newfillcolor;
645 } else if(value instanceof Stream) {
646 texture = Picture.load((Stream)value, this);
648 throw new JSExn("fill must be null, a String, or a stream");
653 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
655 * Handles events which propagate down the box tree. If obscured
656 * is set, then we merely check for Enter/Leave.
658 private void propagateDownward(Object name_, Object value, boolean obscured) {
660 String name = (String)name_;
661 if (getSurface() == null) return;
662 int x = globalToLocalX(getSurface()._mousex);
663 int y = globalToLocalY(getSurface()._mousey);
664 boolean wasinside = test(MOUSEINSIDE);
665 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
666 if (!wasinside && isinside) { set(MOUSEINSIDE); putAndTriggerTrapsAndCatchExceptions("Enter", T); }
667 if (wasinside && !isinside) { clear(MOUSEINSIDE); putAndTriggerTrapsAndCatchExceptions("Leave", T); }
669 boolean found = false;
670 if (wasinside || isinside)
671 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
672 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
673 if (obscured || !child.inside(x - child.x, y - child.y)) {
674 child.propagateDownward(name, value, true);
677 child.clear(STOP_UPWARD_PROPAGATION);
678 child.putAndTriggerTrapsAndCatchExceptions(name, value);
680 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
682 if (child.inside(x - child.x, y - child.y))
683 if (name.equals("_Move")) obscured = true;
687 if (!obscured && !found)
688 if (!name.equals("_Move") || wasinside) putAndTriggerTrapsAndCatchExceptions(name.substring(1), value);
691 private static int stringToColor(String s) {
692 // FIXME support three-char strings by doubling digits
693 if (s == null) return 0x00000000;
694 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
695 else if (s.length() == 7 && s.charAt(0) == '#') try {
698 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
699 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
700 Integer.parseInt(s.substring(5, 7), 16);
701 } catch (NumberFormatException e) {
702 Log.info(Box.class, "invalid color " + s);
705 else return 0; // FEATURE: error?
708 private static String colorToString(int argb) {
709 if ((argb & 0xFF000000) == 0) return null;
710 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
711 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
712 String blue = Integer.toHexString(argb & 0x000000FF);
713 if (red.length() < 2) red = "0" + red;
714 if (blue.length() < 2) blue = "0" + blue;
715 if (green.length() < 2) green = "0" + green;
716 return "#" + red + green + blue;
719 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
720 public static Box whoIs(Box cur, int x, int y) {
722 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
726 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
727 // ANY part of XWT, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
729 if (!cur.test(VISIBLE)) return null;
730 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
732 for(int i=cur.treeSize() - 1; i>=0; i--) {
733 Box child = cur.getChild(i);
734 if (child == null) continue; // since this method is unsynchronized, we have to double-check
737 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
747 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
749 static short min(short a, short b) { if (a<b) return a; else return b; }
750 static int min(int a, int b) { if (a<b) return a; else return b; }
751 static float min(float a, float b) { if (a<b) return a; else return b; }
753 static short max(short a, short b) { if (a>b) return a; else return b; }
754 static int max(int a, int b) { if (a>b) return a; else return b; }
755 static float max(float a, float b) { if (a>b) return a; else return b; }
757 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; }
758 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; }
759 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
760 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
762 void set(int mask) { flags |= mask; }
763 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
764 void clear(int mask) { flags &= ~mask; }
765 boolean test(int mask) { return ((flags & mask) == mask); }
768 // Tree Handling //////////////////////////////////////////////////////////////////////
770 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
771 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
772 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
773 public final Box getChild(int i) {
774 if (i < 0) return null;
775 if (i >= treeSize()) return null;
776 return (Box)getNode(i);
779 // Tree Manipulation /////////////////////////////////////////////////////////////////////
782 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
783 Surface surface = Surface.fromBox(this);
784 if (surface != null) surface.dispose(true);
787 /** remove the i^th child */
788 public void removeChild(int i) {
792 b.clear(MOUSEINSIDE);
796 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
799 public void put(int i, Object value) throws JSExn {
802 if (value != null && !(value instanceof Box)) {
803 if (Log.on) JS.log(this, "attempt to set a numerical property on a box to a non-box");
807 if (redirect == null) {
808 if (value == null) putAndTriggerTrapsAndCatchExceptions("childremoved", getChild(i));
809 else JS.log(this, "attempt to add/remove children to/from a node with a null redirect");
811 } else if (redirect != this) {
812 if (value != null) putAndTriggerTrapsAndCatchExceptions("childadded", value);
813 redirect.put(i, value);
815 Box b = (Box)redirect.get(new Integer(i));
816 if (b != null) putAndTriggerTrapsAndCatchExceptions("childremoved", b);
819 } else if (value == null) {
820 if (i < 0 || i > treeSize()) return;
823 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
828 // check if box being moved is currently target of a redirect
829 for(Box cur = b.parent; cur != null; cur = cur.parent)
830 if (cur.redirect == b) {
831 if (Log.on) JS.log(this, "attempt to move a box that is the target of a redirect");
835 // check for recursive ancestor violation
836 for(Box cur = this; cur != null; cur = cur.parent)
838 if (Log.on) JS.log(this, "attempt to make a node a parent of its own ancestor");
839 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
843 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
847 // need both of these in case child was already uncalc'ed
852 putAndTriggerTrapsAndCatchExceptions("childadded", b);
856 void putAndTriggerTrapsAndCatchExceptions(Object name, Object val) {
858 putAndTriggerTraps(name, val);
860 JS.log("caught js exception while putting to trap \""+name+"\"");
862 } catch (Exception e) {
863 JS.log("caught exception while putting to trap \""+name+"\"");
878 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
879 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
880 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
881 // FIXME: separate offset_x needed for the path
883 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
884 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
885 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
886 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
887 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
888 int left = min(min(x1, x2), min(x3, x4));
889 int right = max(max(x1, x2), max(x3, x4));
890 contentwidth = max(contentwidth, right - left);
891 offset_x = -1 * left;
898 if (rtransform == null) rpath = null;
899 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
901 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
902 rtransform = a.copy();
904 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
905 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
906 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
912 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
913 if (transform != null) a2.multiply(transform);
914 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));