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
16 import org.ibex.util.*;
17 import org.ibex.translators.*;
21 * Encapsulates the data for a single Ibex box as well as all layout
25 * <p>The rendering process consists of four phases; each requires
26 * one DFS pass over the tree</p>
27 * <ol><li> <b>repacking</b>: children of a box are packed into columns
28 * and rows according to their colspan/rowspan attributes and
30 * <ol><li> <b>reconstraining</b>: Minimum and maximum sizes of columns are computed.
31 * <li> <b>resizing</b>: width/height and x/y positions of children
32 * are assigned, and PosChange/SizeChanges are triggered.
33 * <li> <b>repainting</b>: children draw their content onto the PixelBuffer.
36 * The first three passes together are called the <i>reflow</i> phase.
37 * Reflowing is done in a seperate pass since PosChanges and
38 * SizeChanges trigger an Surface.abort; if rendering were done in the same
39 * pass, rendering work done prior to the Surface.abort would be wasted.
41 public final class Box extends JSScope implements Scheduler.Task {
43 // Macros //////////////////////////////////////////////////////////////////////
46 //#define MARK_REPACK for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
47 //#define MARK_REPACK_b for(Box b2 = b; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
48 //#define MARK_REPACK_parent for(Box b2 = parent; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
49 //#define MARK_REFLOW for(Box b2 = this; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
50 //#define MARK_REFLOW_b for(Box b2 = b; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
51 //#define MARK_RESIZE for(Box b2 = this; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
52 //#define MARK_RESIZE_b for(Box b2 = b; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
53 //#define CHECKSET_SHORT(prop) short nu = (short)toInt(value); if (nu == prop) break; prop = nu;
54 //#define CHECKSET_INT(prop) int nu = toInt(value); if (nu == prop) break; prop = nu;
55 //#define CHECKSET_FLAG(flag) boolean nu = toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
56 //#define CHECKSET_BOOLEAN(prop) boolean nu = toBoolean(value); if (nu == prop) break; prop = nu;
57 //#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&value.equals(prop))) break; prop=(String)value;
59 void mark_for_repack() { MARK_REPACK; }
61 protected Box() { super(null); }
63 static Hash boxToCursor = new Hash(500, 3);
64 public static final int MAX_LENGTH = Integer.MAX_VALUE;
65 static final Font DEFAULT_FONT;
69 try { f = Font.getFont((Stream)Main.builtin.get("fonts/vera/Vera.ttf"), 10); }
70 catch(JSExn e) { Log.info(Box.class, "should never happen: "+e); }
75 // box properties can not be trapped
76 static final String[] props = new String[] {
77 "shrink", "hshrink", "vshrink", "x", "y", "width", "height", "cols", "rows",
78 "colspan", "rowspan", "align", "visible", "packed", "globalx", "globaly",
79 "minwidth", "maxwidth", "minheight", "maxheight", "indexof", "thisbox", "clip",
80 "numchildren", "redirect", "cursor", "mouse"
84 // events can have write traps, but not read traps
85 static final String[] events = new String[] {
86 "Press1", "Press2", "Press3",
87 "Release1", "Release2", "Release3",
88 "Click1", "Click2", "Click3",
89 "DoubleClick1", "DoubleClick2", "DoubleClick3",
90 "Enter", "Leave", "Move",
91 "KeyPressed", "KeyReleased", "PosChange", "SizeChange",
92 "childadded", "childremoved",
93 "Focused", "Maximized", "Minimized", "Close",
94 "icon", "titlebar", "toback", "tofront"
97 // Flags //////////////////////////////////////////////////////////////////////
99 static final int MOUSEINSIDE = 0x00000001;
100 static final int VISIBLE = 0x00000002;
101 static final int PACKED = 0x00000004;
102 static final int HSHRINK = 0x00000008;
103 static final int VSHRINK = 0x00000010;
104 static final int BLACK = 0x00000020; // for red-black code
106 static final int FIXED = 0x00000040;
107 static final boolean ROWS = true;
108 static final boolean COLS = false;
110 static final int ISROOT = 0x00000080;
111 static final int REPACK = 0x00000100;
112 static final int REFLOW = 0x00000200;
113 static final int RESIZE = 0x00000400;
114 static final int RECONSTRAIN = 0x00000800;
115 static final int ALIGN_TOP = 0x00001000;
116 static final int ALIGN_BOTTOM = 0x00002000;
117 static final int ALIGN_LEFT = 0x00004000;
118 static final int ALIGN_RIGHT = 0x00008000;
119 static final int ALIGNS = 0x0000f000;
120 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
121 static final int CLIP = 0x00020000;
122 static final int STOP_UPWARD_PROPAGATION = 0x00040000;
125 // Instance Data //////////////////////////////////////////////////////////////////////
129 int flags = VISIBLE | PACKED | REPACK | REFLOW | RESIZE | FIXED /* ROWS */ | STOP_UPWARD_PROPAGATION | CLIP;
131 private String text = null;
132 private Font font = DEFAULT_FONT;
133 private Picture texture = null;
134 private short strokewidth = 1;
135 public int fillcolor = 0x00000000;
136 private int strokecolor = 0xFF000000;
138 private int aspect = 0;
140 // specified directly by user
141 public LENGTH minwidth = 0;
142 public LENGTH maxwidth = MAX_LENGTH;
143 public LENGTH minheight = 0;
144 public LENGTH maxheight = MAX_LENGTH;
145 private short rows = 1;
146 private short cols = 0;
147 private short rowspan = 1;
148 private short colspan = 1;
150 // computed during reflow
151 private short row = 0;
152 private short col = 0;
155 public LENGTH ax = 0; // FEATURE: roll these into x/y; requires lots of changes
156 public LENGTH ay = 0; // FEATURE: roll these into x/y; requires lots of changes; perhaps y()?
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 /////////////////////////////////////////////////////////////////////
171 public final int fontSize() { return font == null ? DEFAULT_FONT.pointsize : font.pointsize; }
173 /** invoked when a resource needed to render ourselves finishes loading */
174 public void perform() throws JSExn {
176 // FIXME; we can't assume that just because we were performed the image is loaded.
177 // as external events have occured, check the state of box
178 if (texture != null) {
179 if (texture.isLoaded) { minwidth = min(texture.width, maxwidth); minheight = min(texture.height, maxheight); }
180 else { JS res = texture.stream; texture = null; throw new JSExn("image not found: "+res.unclone()); }
182 Log.warn(Box.class, "perform() called with null texture");
190 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
191 public Surface getSurface() { return Surface.fromBox(getRoot()); }
193 // FEATURE: use cx2/cy2 format
194 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
195 public void dirty() { dirty(0, 0, width, height); }
196 public void dirty(int x, int y, int w, int h) {
197 for(Box cur = this; cur != null; cur = cur.parent) {
198 // x and y have a different meaning on the root box
199 if (cur.parent != null && cur.test(CLIP)) {
200 w = min(x + w, cur.width) - max(x, 0);
201 h = min(y + h, cur.height) - max(y, 0);
205 if (w <= 0 || h <= 0) return;
206 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
213 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
215 // static stuff so we don't have to keep reallocating
216 private static int[] numRowsInCol = new int[65535];
218 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
219 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
221 /** pack the boxes into rows and columns; also computes contentwidth */
223 for(Box child = getChild(0); child != null; child = child.nextSibling()) child.repack();
225 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan
226 if (test(FIXED) == COLS) {
228 for(Box child = firstPackedChild(); child != null; r++) {
229 for(short c=0, numclear=0; child != null && c < cols; c++) {
230 if (numRowsInCol[c] > r) { numclear = 0; continue; }
231 if (c != 0 && c + min(cols, child.colspan) - numclear > cols) break;
232 if (++numclear < min(cols, child.colspan)) continue;
233 for(int i=c - numclear + 1; i <= c; i++) numRowsInCol[i] += child.rowspan;
234 child.col = (short)(c - numclear + 1); child.row = r;
235 rows = (short)max(rows, child.row + child.rowspan);
236 child = child.nextPackedSibling();
240 for(int i=0; i<cols; i++) numRowsInCol[i] = 0;
247 //#repeat contentwidth/contentheight colspan/rowspan col/row cols/rows minwidth/minheight \
248 // textwidth/textheight maxwidth/maxheight cols/rows
249 // FIXME: inefficient
251 for(int i=0; i<rows; i++) {
252 int rowcontentwidth = 0;
253 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
254 if (child.row <= i && (child.row + child.rowspan > i))
255 rowcontentwidth += child.contentwidth;
256 contentwidth = max(contentwidth, rowcontentwidth);
258 contentwidth = bound(minwidth, max(font == null || text == null ? 0 : font.textwidth(text), contentwidth), maxwidth);
262 void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
263 if (x != this.x || y != this.y || width != this.width || height != this.height) {
264 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
265 boolean poschange = (this.x != x || this.y != y) && getTrap("PosChange") != null;
267 int thisx = parent == null ? 0 : this.x;
268 int thisy = parent == null ? 0 : this.y;
270 // we can't reenable this until we track
271 // surface-relative sizes; imagine the case of a clear
272 // surface with nonclear children
275 if (texture == null && (text == null || text.equals(""))) {
276 if ((fillcolor & 0xff000000) == 0) break;
277 // FEATURE: more optimizations here
278 if (this.x == x && this.y == y) {
279 Box who = (parent == null ? this : parent);
280 who.dirty(thisx+min(this.width,width), thisy, Math.abs(width-this.width), max(this.height, height));
281 who.dirty(thisx, thisy+min(this.height,height), min(this.width, width), Math.abs(height-this.height));
286 (parent == null ? this : parent).dirty(thisx, thisy, this.width, this.height);
287 this.width = width; this.height = height; this.x = x; this.y = y;
290 //this.width = width; this.height = height; this.x = x; this.y = y;
291 if (sizechange) putAndTriggerTrapsAndCatchExceptions("SizeChange", T);
292 if (poschange) putAndTriggerTrapsAndCatchExceptions("PosChange", T);
296 private static float[] coeff = null;
297 private static LinearProgramming.Simplex lp_h = new LinearProgramming.Simplex(50, 50, 300);
298 private static LinearProgramming.Simplex lp_v = new LinearProgramming.Simplex(50, 50, 300);
300 void place_children() {
301 int numkids = 0; for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) numkids++;
302 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height \
303 // maxwidth/maxheight cols/rows minwidth/minheight lp_h/lp_v lp_h/lp_v
305 int nc = numkids * 2 + cols * 3 + 1 + 2;
306 if (coeff == null || nc+1>coeff.length) coeff = new float[nc+1];
309 // objective function
310 for(int i=0; i<coeff.length; i++) coeff[i] = (float)0.0;
311 coeff[cols*2+numkids] = (float)-100000.0; // priority 1: sum of columns equals parent
312 for(int i=cols*2; i<cols*2+numkids; i++) coeff[i] = (float)-1000.0; // priority 2: honor maxwidths
313 for(int i=cols; i<cols*2; i++) coeff[i] = (float)(-1.0); // priority 3: equalize columns
314 lp_h.setObjective(coeff, true);
316 // priority 1: sum of columns at least as big as parent
317 for(int i=0; i<coeff.length; i++) coeff[i] = (i<cols) ? (float)1.0 : (float)0.0;
318 lp_h.add_constraint(coeff, LinearProgramming.GE, (float)width);
319 for(int i=0; i<coeff.length; i++) coeff[i] = (i<cols) ? (float)1.0 : (float)0.0;
320 coeff[cols*2+numkids] = (float)1.0;
321 lp_h.add_constraint(coeff, LinearProgramming.EQ, (float)width);
323 // priority 2: honor maxwidths
325 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling()) {
326 for(int i=0; i<coeff.length; i++)
327 coeff[i] = (i>=child.col && i<min(child.colspan+child.col, cols)) ? (float)1.0 : (float)0.0;
328 lp_h.add_constraint(coeff, LinearProgramming.GE, (float)child.contentwidth);
329 if (child.maxwidth < Integer.MAX_VALUE) {
330 for(int i=0; i<coeff.length; i++)
331 coeff[i] = (i>=child.col && i<min(child.colspan+child.col, cols)) ? (float)1.0 : (float)0.0;
332 coeff[cols*2+childnum] = (float)-1.0;
333 lp_h.add_constraint(coeff, LinearProgramming.EQ, (float)child.maxwidth);
335 for(int j=0; j<coeff.length; j++) coeff[j] = (float)0.0;
339 // priority 3: equalize columns
340 for(int i=0 ; i<cols; i++) {
341 lp_h.set_lowbo(i+1, (float)0.0);
342 lp_h.bound_difference(i, cols+i, ((float)width)/((float)cols), LinearProgramming.LE, coeff);
343 lp_h.bound_sum( i, cols+i, ((float)width)/((float)cols), LinearProgramming.GE, coeff);
350 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
351 if (!child.test(VISIBLE)) continue;
352 int child_width, child_height, child_x, child_y;
353 if (!child.test(PACKED)) {
354 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - Math.abs(child.ax));
355 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - Math.abs(child.ay));
356 child_width = max(child.minwidth, child_width);
357 child_height = max(child.minheight, child_height);
358 int gap_x = width - child_width;
359 int gap_y = height - child_height;
360 child_x = child.ax + (child.test(ALIGN_RIGHT) ? gap_x : !child.test(ALIGN_LEFT) ? gap_x / 2 : 0);
361 child_y = child.ay + (child.test(ALIGN_BOTTOM) ? gap_y : !child.test(ALIGN_TOP) ? gap_y / 2 : 0);
364 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
365 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
366 // child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP lp_h/lp_v
369 for(int i=0; i < child.col; i++) child_x += Math.round(lp_h.solution[lp_h.rows+i+1]);
370 for(int i = child.col; i<child.col + child.colspan; i++) child_width += Math.round(lp_h.solution[lp_h.rows+i+1]);
371 diff = (child_width - min(child_width, child.test(HSHRINK) ? child.contentwidth : child.maxwidth));
372 child_x += (child.test(ALIGN_RIGHT) ? diff : child.test(ALIGN_LEFT) ? 0 : diff / 2);
373 child_width = min(child_width, child.test(HSHRINK) ? child.contentwidth : child.maxwidth);
376 child.resize(child_x, child_y, child_width, child_height);
379 for(Box child = getChild(0); child != null; child = child.nextSibling())
380 if (child.test(VISIBLE) && child.treeSize() > 0)
381 child.place_children();
386 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
388 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
389 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
390 if (!test(VISIBLE)) return;
391 int globalx = parentx + (parent == null ? 0 : x);
392 int globaly = parenty + (parent == null ? 0 : y);
394 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
396 cx1 = max(cx1, globalx);
397 cy1 = max(cy1, globaly);
398 cx2 = min(cx2, globalx + width);
399 cy2 = min(cy2, globaly + height);
400 if (cx2 <= cx1 || cy2 <= cy1) return;
403 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
404 buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
406 // FIXME: do aspect in here
407 if (texture != null && texture.isLoaded)
408 for(int x = globalx; x < cx2; x += texture.width)
409 for(int y = globaly; y < cy2; y += texture.height)
410 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
412 if (text != null && !text.equals("") && font != null) {
413 int gap_x = width - font.textwidth(text);
414 int gap_y = height - font.textheight(text);
415 int text_x = globalx + (test(ALIGN_RIGHT) ? gap_x : !test(ALIGN_LEFT) ? gap_x/2 : 0);
416 int text_y = globaly + (test(ALIGN_BOTTOM) ? gap_y : !test(ALIGN_TOP) ? gap_y/2 : 0);
417 if (font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2, null) == -1)
418 font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2, this);
421 for(Box b = getChild(0); b != null; b = b.nextSibling())
422 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
426 // Methods to implement org.ibex.js.JS //////////////////////////////////////
428 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
429 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
430 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
431 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
433 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
439 if (b.parent != this)
440 return (redirect == null || redirect == this) ?
442 redirect.callMethod(method, a0, a1, a2, rest, nargs);
443 return N(b.getIndexInParent());
448 ret.put("x", N(b.localToGlobalX(0) - localToGlobalX(0)));
449 ret.put("y", N(b.localToGlobalY(0) - localToGlobalY(0)));
455 return super.callMethod(method, a0, a1, a2, rest, nargs);
458 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
460 protected boolean isTrappable(Object key, boolean isRead) {
461 if (key == null) return false;
462 else if (key instanceof String) {
463 // not allowed to trap box properties, and no read traps on events
464 String name = (String)key;
465 for (int i=0; i < props.length; i++) if (name.equals(props[i])) return false;
466 if (isRead) for (int i=0; i < events.length; i++) if (name.equals(events[i])) return false;
472 public Object get(Object name) throws JSExn {
473 if (name instanceof Number)
474 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
477 case "surface": return parent == null ? null : parent.getAndTriggerTraps("surface");
478 case "indexof": return METHOD;
479 case "distanceto": return METHOD;
480 case "text": return text;
481 case "path": throw new JSExn("cannot read from the path property");
482 case "fill": return colorToString(fillcolor);
483 case "strokecolor": return colorToString(strokecolor);
484 case "textcolor": return colorToString(strokecolor);
485 case "font": return font == null ? null : font.stream;
486 case "fontsize": return font == null ? N(10) : N(font.pointsize);
487 case "strokewidth": return N(strokewidth);
488 case "align": return alignToString();
489 case "thisbox": return this;
490 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
491 case "hshrink": return B(test(HSHRINK));
492 case "vshrink": return B(test(VSHRINK));
493 case "aspect": return N(aspect);
494 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : N(x);
495 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : N(y);
496 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
497 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
498 case "colspan": return N(colspan);
499 case "rowspan": return N(rowspan);
500 case "width": return N(width);
501 case "height": return N(height);
502 case "minwidth": return N(minwidth);
503 case "maxwidth": return N(maxwidth);
504 case "minheight": return N(minheight);
505 case "maxheight": return N(maxheight);
506 case "clip": return B(test(CLIP));
507 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
508 case "packed": return B(test(PACKED));
509 case "globalx": return N(localToGlobalX(0));
510 case "globaly": return N(localToGlobalY(0));
511 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
513 if (getSurface() == null) return null;
514 if (getSurface()._mousex == Integer.MAX_VALUE)
515 throw new JSExn("you cannot read from the box.mouse property in background thread context");
517 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(treeSize()) : redirect.get("numchildren");
518 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
519 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
520 default: return super.get(name);
522 throw new Error("unreachable"); // unreachable
525 private class Mouse extends JS.Cloneable {
526 public Object get(Object key) {
528 case "x": return N(globalToLocalX(getSurface()._mousex));
529 case "y": return N(globalToLocalY(getSurface()._mousey));
531 // this might not get recomputed if we change mousex/mousey...
532 case "inside": return B(test(MOUSEINSIDE));
538 void setMaxWidth(Object value) {
539 do { CHECKSET_INT(maxwidth); MARK_RESIZE; } while(false);
540 if (parent == null && getSurface() != null) getSurface().pendingWidth = maxwidth;
542 void setMaxHeight(Object value) {
543 do { CHECKSET_INT(maxheight); MARK_RESIZE; } while(false);
544 if (parent == null && getSurface() != null) getSurface().pendingHeight = maxheight;
547 public void put(Object name, Object value) throws JSExn {
548 if (name instanceof Number) { put(toInt(name), value); return; }
550 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
551 case "strokecolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
552 case "textcolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
553 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
554 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
555 case "shrink": put("hshrink", value); put("vshrink", value);
556 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
557 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
558 case "width": put("maxwidth", value); put("minwidth", value); MARK_RESIZE;
559 case "height": put("maxheight", value); put("minheight", value); MARK_RESIZE;
560 case "maxwidth": setMaxWidth(value);
561 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
562 if (parent == null && getSurface() != null)
563 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
564 case "maxheight": setMaxHeight(value);
565 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
566 if (parent == null && getSurface() != null)
567 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
568 case "colspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
569 case "rowspan": CHECKSET_SHORT(rowspan); MARK_REPACK_parent;
570 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); MARK_REPACK;
571 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); MARK_REPACK;
572 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
573 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
574 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
575 case "aspect": CHECKSET_INT(aspect); dirty();
576 case "globalx": put("x", N(globalToLocalX(toInt(value))));
577 case "globaly": put("y", N(globalToLocalY(toInt(value))));
578 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
579 case "cursor": setCursor(value);
580 case "fill": setFill(value);
582 int mousex = toInt(((JS)value).get("x"));
583 int mousey = toInt(((JS)value).get("y"));
584 getSurface()._mousex = localToGlobalX(mousex);
585 getSurface()._mousey = localToGlobalY(mousey);
586 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
587 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
588 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
590 if (value == null) { redirect = null; return; }
591 for(Box cur = (Box)value; cur != null; cur = cur.parent)
592 if (cur == redirect) {
593 redirect = (Box)value;
596 JS.error("redirect can only be set to a descendant of its current value");
598 if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
599 font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
602 case "fontsize": font = Font.getFont(font == null ? null : font.stream, toInt(value)); MARK_RESIZE; dirty();
603 case "x": if (parent==null && Surface.fromBox(this)!=null) {
606 if (test(PACKED) && parent != null) return;
607 dirty(); CHECKSET_INT(ax);
608 dirty(); MARK_RESIZE;
611 case "y": if (parent==null && Surface.fromBox(this)!=null) {
614 if (test(PACKED) && parent != null) return;
615 dirty(); CHECKSET_INT(ay);
616 dirty(); MARK_RESIZE;
620 if (getSurface() != null && value != null) getSurface().setTitleBarText(JS.toString(value));
621 super.put(name,value);
623 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
624 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
625 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
626 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
627 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
628 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
629 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
630 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
631 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
632 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
633 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
634 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
635 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
636 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
637 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
639 case "HScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
640 parent.putAndTriggerTraps(name, N(((Number)value).floatValue() * ((float)parent.fontSize()) / ((float)fontSize())));
641 case "VScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
642 parent.putAndTriggerTraps(name, N(((Number)value).floatValue() * ((float)parent.fontSize()) / ((float)fontSize())));
644 case "_Move": propagateDownward(name, value, false);
645 case "_Press1": propagateDownward(name, value, false);
646 case "_Press2": propagateDownward(name, value, false);
647 case "_Press3": propagateDownward(name, value, false);
648 case "_Release1": propagateDownward(name, value, false);
649 case "_Release2": propagateDownward(name, value, false);
650 case "_Release3": propagateDownward(name, value, false);
651 case "_Click1": propagateDownward(name, value, false);
652 case "_Click2": propagateDownward(name, value, false);
653 case "_Click3": propagateDownward(name, value, false);
654 case "_DoubleClick1": propagateDownward(name, value, false);
655 case "_DoubleClick2": propagateDownward(name, value, false);
656 case "_DoubleClick3": propagateDownward(name, value, false);
657 case "_KeyPressed": propagateDownward(name, value, false);
658 case "_KeyReleased": propagateDownward(name, value, false);
659 case "_HScroll": propagateDownward(name, value, false);
660 case "_VScroll": propagateDownward(name, value, false);
662 case "PosChange": return;
663 case "SizeChange": return;
664 case "childadded": return;
665 case "childremoved": return;
666 case "Enter": return;
667 case "Leave": return;
669 case "thisbox": if (value == null) removeSelf();
671 default: super.put(name, value);
675 private String alignToString() {
676 switch(flags & ALIGNS) {
677 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
678 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
679 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
680 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
681 case ALIGN_TOP: return "top";
682 case ALIGN_BOTTOM: return "bottom";
683 case ALIGN_LEFT: return "left";
684 case ALIGN_RIGHT: return "right";
685 case 0: return "center";
686 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
690 private void setAlign(Object value) {
692 case "center": clear(ALIGNS);
693 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
694 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
695 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
696 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
697 case "top": set(ALIGN_TOP);
698 case "bottom": set(ALIGN_BOTTOM);
699 case "left": set(ALIGN_LEFT);
700 case "right": set(ALIGN_RIGHT);
701 default: JS.log("invalid alignment \"" + value + "\"");
705 private void setCursor(Object value) {
706 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
707 if (value.equals(boxToCursor.get(this))) return;
709 boxToCursor.put(this, value);
710 Surface surface = getSurface();
711 if (surface != null) {
712 String tempcursor = surface.cursor;
713 propagateDownward(null, null, false);
714 if (surface.cursor != tempcursor) surface.syncCursor();
718 private void setFill(Object value) throws JSExn {
720 // FIXME: Check this... does this make it transparent?
723 } else if (value instanceof String) {
724 // FIXME check double set
725 int newfillcolor = stringToColor((String)value);
726 if (newfillcolor == fillcolor) return;
727 fillcolor = newfillcolor;
728 } else if(value instanceof JS) {
729 texture = Picture.load((JS)value, this);
731 throw new JSExn("fill must be null, a String, or a stream, not a " + value.getClass());
736 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
738 * Handles events which propagate down the box tree. If obscured
739 * is set, then we merely check for Enter/Leave.
741 private void propagateDownward(Object name_, Object value, boolean obscured) {
743 String name = (String)name_;
744 if (getSurface() == null) return;
745 int x = globalToLocalX(getSurface()._mousex);
746 int y = globalToLocalY(getSurface()._mousey);
747 boolean wasinside = test(MOUSEINSIDE);
748 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
749 if (!wasinside && isinside) {
751 putAndTriggerTrapsAndCatchExceptions("Enter", T);
753 if (isinside && test(CURSOR)) getSurface().cursor = (String)boxToCursor.get(this);
754 if (wasinside && !isinside) {
756 putAndTriggerTrapsAndCatchExceptions("Leave", T);
759 boolean found = false;
760 if (wasinside || isinside)
761 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
762 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
763 Object value2 = value;
764 if (name.equals("_HScroll") || name.equals("_VScroll"))
765 value2 = N(((Number)value).floatValue() * ((float)child.fontSize()) / (float)fontSize());
766 if (obscured || !child.inside(x - child.x, y - child.y)) {
767 child.propagateDownward(name, value2, true);
770 child.clear(STOP_UPWARD_PROPAGATION);
771 if (name != null) child.putAndTriggerTrapsAndCatchExceptions(name, value2);
772 else child.propagateDownward(name, value2, obscured);
774 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
776 if (child.inside(x - child.x, y - child.y))
777 if (name != null && name.equals("_Move")) obscured = true;
781 if (!obscured && !found)
782 if ("_Move".equals(name) || wasinside)
784 putAndTriggerTrapsAndCatchExceptions(name.substring(1), value);
787 private static int stringToColor(String s) {
788 // FIXME support three-char strings by doubling digits
789 if (s == null) return 0x00000000;
790 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
791 else if (s.length() == 7 && s.charAt(0) == '#') try {
794 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
795 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
796 Integer.parseInt(s.substring(5, 7), 16);
797 } catch (NumberFormatException e) {
798 Log.info(Box.class, "invalid color " + s);
801 else return 0; // FEATURE: error?
804 private static String colorToString(int argb) {
805 if ((argb & 0xFF000000) == 0) return null;
806 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
807 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
808 String blue = Integer.toHexString(argb & 0x000000FF);
809 if (red.length() < 2) red = "0" + red;
810 if (blue.length() < 2) blue = "0" + blue;
811 if (green.length() < 2) green = "0" + green;
812 return "#" + red + green + blue;
815 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
816 public static Box whoIs(Box cur, int x, int y) {
818 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
822 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
823 // ANY part of Ibex, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
825 if (!cur.test(VISIBLE)) return null;
826 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
828 for(int i=cur.treeSize() - 1; i>=0; i--) {
829 Box child = cur.getChild(i);
830 if (child == null) continue; // since this method is unsynchronized, we have to double-check
833 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
843 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
845 static short min(short a, short b) { if (a<b) return a; else return b; }
846 static int min(int a, int b) { if (a<b) return a; else return b; }
847 static float min(float a, float b) { if (a<b) return a; else return b; }
849 static short max(short a, short b) { if (a>b) return a; else return b; }
850 static int max(int a, int b) { if (a>b) return a; else return b; }
851 static float max(float a, float b) { if (a>b) return a; else return b; }
853 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; }
854 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; }
855 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
856 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
858 void set(int mask) { flags |= mask; }
859 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
860 void clear(int mask) { flags &= ~mask; }
861 boolean test(int mask) { return ((flags & mask) == mask); }
864 // Tree Handling //////////////////////////////////////////////////////////////////////
866 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
867 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
868 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
869 public final Box getChild(int i) {
870 if (i < 0) return null;
871 if (i >= treeSize()) return null;
872 return (Box)getNode(i);
875 // Tree Manipulation /////////////////////////////////////////////////////////////////////
878 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
879 Surface surface = Surface.fromBox(this);
880 if (surface != null) surface.dispose(true);
883 /** remove the i^th child */
884 public void removeChild(int i) {
888 b.clear(MOUSEINSIDE);
892 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
895 public void put(int i, Object value) throws JSExn {
898 if (value != null && !(value instanceof Box)) {
899 if (Log.on) JS.warn("attempt to set a numerical property on a box to a non-box");
903 if (redirect == null) {
904 if (value == null) putAndTriggerTrapsAndCatchExceptions("childremoved", getChild(i));
905 else JS.warn("attempt to add/remove children to/from a node with a null redirect");
907 } else if (redirect != this) {
908 if (value != null) putAndTriggerTrapsAndCatchExceptions("childadded", value);
909 redirect.put(i, value);
911 Box b = (Box)redirect.get(new Integer(i));
912 if (b != null) putAndTriggerTrapsAndCatchExceptions("childremoved", b);
915 } else if (value == null) {
916 if (i < 0 || i > treeSize()) return;
919 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
924 // check if box being moved is currently target of a redirect
925 for(Box cur = b.parent; cur != null; cur = cur.parent)
926 if (cur.redirect == b) {
927 if (Log.on) JS.warn("attempt to move a box that is the target of a redirect");
931 // check for recursive ancestor violation
932 for(Box cur = this; cur != null; cur = cur.parent)
934 if (Log.on) JS.warn("attempt to make a node a parent of its own ancestor");
935 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
939 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
943 // need both of these in case child was already uncalc'ed
948 putAndTriggerTrapsAndCatchExceptions("childadded", b);
952 void putAndTriggerTrapsAndCatchExceptions(Object name, Object val) {
954 putAndTriggerTraps(name, val);
956 JS.log("caught js exception while putting to trap \""+name+"\"");
958 } catch (Exception e) {
959 JS.log("caught exception while putting to trap \""+name+"\"");
974 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
975 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
976 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
977 // FIXME: separate offset_x needed for the path
979 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
980 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
981 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
982 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
983 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
984 int left = min(min(x1, x2), min(x3, x4));
985 int right = max(max(x1, x2), max(x3, x4));
986 contentwidth = max(contentwidth, right - left);
987 offset_x = -1 * left;
994 if (rtransform == null) rpath = null;
995 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
997 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
998 rtransform = a.copy();
1000 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
1001 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
1002 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
1008 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
1009 if (transform != null) a2.multiply(transform);
1010 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));