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;
244 //#repeat contentwidth/contentheight colWidth/rowHeight colspan/rowspan col/row cols/rows minwidth/minheight \
245 // textwidth/textheight maxwidth/maxheight cols/rows
247 int[] colWidth = new int[cols];
248 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
249 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
250 for(int i=0; i<cols; i++) contentwidth += colWidth[i];
251 contentwidth = bound(minwidth, max(font == null || text == null ? 0 : font.textwidth(text), contentwidth), maxwidth);
255 void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
256 if (x != this.x || y != this.y || width != this.width || height != this.height) {
257 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
258 boolean poschange = (this.x != x || this.y != y) && getTrap("PosChange") != null;
260 int thisx = parent == null ? 0 : this.x;
261 int thisy = parent == null ? 0 : this.y;
263 // we can't reenable this until we track
264 // surface-relative sizes; imagine the case of a clear
265 // surface with nonclear children
268 if (texture == null && (text == null || text.equals(""))) {
269 if ((fillcolor & 0xff000000) == 0) break;
270 // FEATURE: more optimizations here
271 if (this.x == x && this.y == y) {
272 Box who = (parent == null ? this : parent);
273 who.dirty(thisx+min(this.width,width), thisy, Math.abs(width-this.width), max(this.height, height));
274 who.dirty(thisx, thisy+min(this.height,height), min(this.width, width), Math.abs(height-this.height));
279 (parent == null ? this : parent).dirty(thisx, thisy, this.width, this.height);
280 this.width = width; this.height = height; this.x = x; this.y = y;
283 //this.width = width; this.height = height; this.x = x; this.y = y;
284 if (sizechange) putAndTriggerTrapsAndCatchExceptions("SizeChange", T);
285 if (poschange) putAndTriggerTrapsAndCatchExceptions("PosChange", T);
289 private static float[] coeff = null;
290 void place_children() {
291 int numkids = 0; for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) numkids++;
292 int nc = numkids * 2 + cols * 3 + 1 + 2;
293 if (coeff == null || nc+1>coeff.length) coeff = new float[nc+1];
294 LinearProgramming.Simplex lp_h = new LinearProgramming.Simplex();
295 LinearProgramming.Problem lpr_h = new LinearProgramming.Problem(nc, nc);
296 LinearProgramming.Simplex lp_v = new LinearProgramming.Simplex();
297 LinearProgramming.Problem lpr_v = new LinearProgramming.Problem(nc, nc);
299 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight colWidth/rowHeight \
300 // HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight colWidth/rowHeight x_slack/y_slack lp_h/lp_v lpr_h/lpr_v
302 // objective function
303 coeff[cols*2+numkids] = coeff[cols*2+numkids+1] = (float)-10000.0; // attempt to make sum of columns equal to parent width
304 for(int i=cols*2; i<cols*2+numkids; i++) coeff[i] = (float)100.0; // second priority: try to honor maxwidths
305 for(int i=cols; i<cols*2; i++) coeff[i] = (float)(-1.0); // third priority: try to make all columns similar size
306 lp_h.set_obj_fn(lpr_h, coeff);
307 lp_h.set_maxim(lpr_h);
309 // top priority: try to match the parent's width
310 for(int i=0; i<coeff.length; i++) coeff[i] = (i<cols) ? (float)1.0 : (float)0.0;
311 coeff[cols*2+numkids] = (float)-1.0;
312 lp_h.add_constraint(lpr_h, coeff, LinearProgramming.LE, (float)width);
314 for(int i=0; i<coeff.length; i++) coeff[i] = (i<cols) ? (float)1.0 : (float)0.0;
315 coeff[cols*2+numkids+1] = (float)1.0;
316 lp_h.add_constraint(lpr_h, coeff, LinearProgramming.GE, (float)width);
318 // obey minwidth, second priority: try to obey maxwidth (if relevant)
320 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling()) {
321 for(int i=0; i<coeff.length; i++) coeff[i] = (i>=child.col && i<min(child.colspan+child.col, cols)) ? (float)1.0 : (float)0.0;
322 lp_h.add_constraint(lpr_h, coeff, LinearProgramming.GE, (float)child.minwidth);
323 if (child.maxwidth < Integer.MAX_VALUE) {
324 for(int i=0; i<coeff.length; i++)
325 coeff[i] = (i>=child.col && i<min(child.colspan+child.col, cols)) ? (float)1.0 : (float)0.0;
326 coeff[cols*2+childnum] = (float)1.0;
327 lp_h.add_constraint(lpr_h, coeff, LinearProgramming.EQ, (float)child.maxwidth);
329 for(int j=0; j<coeff.length; j++) coeff[j] = (float)0.0;
333 // third priority: try to make columns similar size
334 for(int i=0 ; i<cols; i++) {
335 lp_h.set_lowbo(lpr_h, i+1, (float)0.0);
336 lp_h.bound_difference(lpr_h, i, cols+i, ((float)width)/((float)cols), LinearProgramming.LE, coeff);
337 lp_h.bound_sum( lpr_h, i, cols+i, ((float)width)/((float)cols), LinearProgramming.GE, coeff);
344 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
345 if (!child.test(VISIBLE)) continue;
346 int child_width, child_height, child_x, child_y;
347 if (!child.test(PACKED)) {
348 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - Math.abs(child.ax));
349 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - Math.abs(child.ay));
350 child_width = max(child.minwidth, child_width);
351 child_height = max(child.minheight, child_height);
352 int gap_x = width - child_width;
353 int gap_y = height - child_height;
354 child_x = child.ax + (child.test(ALIGN_RIGHT) ? gap_x : !child.test(ALIGN_LEFT) ? gap_x / 2 : 0);
355 child_y = child.ay + (child.test(ALIGN_BOTTOM) ? gap_y : !child.test(ALIGN_TOP) ? gap_y / 2 : 0);
357 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
358 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
359 // colWidth/rowHeight child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP lpr_h/lpr_v
362 for(int i=0; i < child.col; i++) child_x += Math.round(lpr_h.solution[lpr_h.rows+i+1]);
363 for(int i = child.col; i < child.col + child.colspan; i++) child_width += Math.round(lpr_h.solution[lpr_h.rows+i+1]);
364 child_x += (child_width - min(child_width, child.test(HSHRINK) ? child.contentwidth : child.maxwidth)) / 2;
365 child_width = min(child_width, child.test(HSHRINK) ? child.contentwidth : child.maxwidth);
368 child.resize(child_x, child_y, child_width, child_height);
371 for(Box child = getChild(0); child != null; child = child.nextSibling())
372 if (child.test(VISIBLE) && child.treeSize() > 0)
373 child.place_children();
378 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
380 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
381 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
382 if (!test(VISIBLE)) return;
383 int globalx = parentx + (parent == null ? 0 : x);
384 int globaly = parenty + (parent == null ? 0 : y);
386 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
388 cx1 = max(cx1, globalx);
389 cy1 = max(cy1, globaly);
390 cx2 = min(cx2, globalx + width);
391 cy2 = min(cy2, globaly + height);
392 if (cx2 <= cx1 || cy2 <= cy1) return;
395 if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
396 buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
398 // FIXME: do aspect in here
399 if (texture != null && texture.isLoaded)
400 for(int x = globalx; x < cx2; x += texture.width)
401 for(int y = globaly; y < cy2; y += texture.height)
402 buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
404 if (text != null && !text.equals("") && font != null) {
405 int gap_x = width - font.textwidth(text);
406 int gap_y = height - font.textheight(text);
407 int text_x = globalx + (test(ALIGN_RIGHT) ? gap_x : !test(ALIGN_LEFT) ? gap_x/2 : 0);
408 int text_y = globaly + (test(ALIGN_BOTTOM) ? gap_y : !test(ALIGN_TOP) ? gap_y/2 : 0);
409 if (font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2, null) == -1)
410 font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2, this);
413 for(Box b = getChild(0); b != null; b = b.nextSibling())
414 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
418 // Methods to implement org.ibex.js.JS //////////////////////////////////////
420 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
421 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
422 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
423 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
425 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
426 if (nargs != 1 || !"indexof".equals(method)) return super.callMethod(method, a0, a1, a2, rest, nargs);
428 if (b.parent != this)
429 return (redirect == null || redirect == this) ?
431 redirect.callMethod(method, a0, a1, a2, rest, nargs);
432 return N(b.getIndexInParent());
435 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
437 protected boolean isTrappable(Object key, boolean isRead) {
438 if (key == null) return false;
439 else if (key instanceof String) {
440 // not allowed to trap box properties, and no read traps on events
441 String name = (String)key;
442 for (int i=0; i < props.length; i++) if (name.equals(props[i])) return false;
443 if (isRead) for (int i=0; i < events.length; i++) if (name.equals(events[i])) return false;
449 public Object get(Object name) throws JSExn {
450 if (name instanceof Number)
451 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
454 case "surface": return parent == null ? null : parent.getAndTriggerTraps("surface");
455 case "indexof": return METHOD;
456 case "text": return text;
457 case "path": throw new JSExn("cannot read from the path property");
458 case "fill": return colorToString(fillcolor);
459 case "strokecolor": return colorToString(strokecolor);
460 case "textcolor": return colorToString(strokecolor);
461 case "font": return font == null ? null : font.stream;
462 case "fontsize": return font == null ? N(10) : N(font.pointsize);
463 case "strokewidth": return N(strokewidth);
464 case "align": return alignToString();
465 case "thisbox": return this;
466 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
467 case "hshrink": return B(test(HSHRINK));
468 case "vshrink": return B(test(VSHRINK));
469 case "aspect": return N(aspect);
470 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : N(x);
471 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : N(y);
472 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
473 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
474 case "colspan": return N(colspan);
475 case "rowspan": return N(rowspan);
476 case "width": return N(width);
477 case "height": return N(height);
478 case "minwidth": return N(minwidth);
479 case "maxwidth": return N(maxwidth);
480 case "minheight": return N(minheight);
481 case "maxheight": return N(maxheight);
482 case "clip": return B(test(CLIP));
483 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
484 case "packed": return B(test(PACKED));
485 case "globalx": return N(localToGlobalX(0));
486 case "globaly": return N(localToGlobalY(0));
487 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
489 if (getSurface() == null) return null;
490 if (getSurface()._mousex == Integer.MAX_VALUE)
491 throw new JSExn("you cannot read from the box.mouse property in background thread context");
493 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(treeSize()) : redirect.get("numchildren");
494 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
495 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
496 default: return super.get(name);
498 throw new Error("unreachable"); // unreachable
501 private class Mouse extends JS.Cloneable {
502 public Object get(Object key) {
504 case "x": return N(globalToLocalX(getSurface()._mousex));
505 case "y": return N(globalToLocalY(getSurface()._mousey));
507 // this might not get recomputed if we change mousex/mousey...
508 case "inside": return B(test(MOUSEINSIDE));
514 void setMaxWidth(Object value) {
515 do { CHECKSET_INT(maxwidth); MARK_RESIZE; } while(false);
516 if (parent == null && getSurface() != null) getSurface().pendingWidth = maxwidth;
518 void setMaxHeight(Object value) {
519 do { CHECKSET_INT(maxheight); MARK_RESIZE; } while(false);
520 if (parent == null && getSurface() != null) getSurface().pendingHeight = maxheight;
523 public void put(Object name, Object value) throws JSExn {
524 if (name instanceof Number) { put(toInt(name), value); return; }
526 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
527 case "strokecolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
528 case "textcolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
529 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
530 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
531 case "shrink": put("hshrink", value); put("vshrink", value);
532 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
533 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
534 case "width": put("maxwidth", value); put("minwidth", value); MARK_RESIZE;
535 case "height": put("maxheight", value); put("minheight", value); MARK_RESIZE;
536 case "maxwidth": setMaxWidth(value);
537 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
538 if (parent == null && getSurface() != null)
539 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
540 case "maxheight": setMaxHeight(value);
541 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
542 if (parent == null && getSurface() != null)
543 getSurface().setMinimumSize(minwidth, minheight, minwidth != maxwidth || minheight != maxheight);
544 case "colspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
545 case "rowspan": CHECKSET_SHORT(rowspan); MARK_REPACK_parent;
546 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); MARK_REPACK;
547 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); MARK_REPACK;
548 case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
549 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
550 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
551 case "aspect": CHECKSET_INT(aspect); dirty();
552 case "globalx": put("x", N(globalToLocalX(toInt(value))));
553 case "globaly": put("y", N(globalToLocalY(toInt(value))));
554 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
555 case "cursor": setCursor(value);
556 case "fill": setFill(value);
558 int mousex = toInt(((JS)value).get("x"));
559 int mousey = toInt(((JS)value).get("y"));
560 getSurface()._mousex = localToGlobalX(mousex);
561 getSurface()._mousey = localToGlobalY(mousey);
562 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
563 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
564 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
566 for(Box cur = (Box)value; cur != null; cur = cur.parent)
567 if (cur == redirect) {
568 redirect = (Box)value;
571 JS.error("redirect can only be set to a descendant of its current value");
573 if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
574 font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
577 case "fontsize": font = Font.getFont(font == null ? null : font.stream, toInt(value)); MARK_RESIZE; dirty();
578 case "x": if (parent==null && Surface.fromBox(this)!=null) {
581 if (test(PACKED) && parent != null) return;
582 dirty(); CHECKSET_INT(ax);
583 dirty(); MARK_RESIZE;
586 case "y": if (parent==null && Surface.fromBox(this)!=null) {
589 if (test(PACKED) && parent != null) return;
590 dirty(); CHECKSET_INT(ay);
591 dirty(); MARK_RESIZE;
595 if (getSurface() != null && value != null) getSurface().setTitleBarText(JS.toString(value));
596 super.put(name,value);
598 case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
599 case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
600 case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
601 case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
602 case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
603 case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
604 case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
605 case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
606 case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
607 case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
608 case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
609 case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
610 case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
611 case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
612 case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
614 case "HScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
615 parent.putAndTriggerTraps(name, N(((Number)value).floatValue() * ((float)parent.fontSize()) / ((float)fontSize())));
616 case "VScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
617 parent.putAndTriggerTraps(name, N(((Number)value).floatValue() * ((float)parent.fontSize()) / ((float)fontSize())));
619 case "_Move": propagateDownward(name, value, false);
620 case "_Press1": propagateDownward(name, value, false);
621 case "_Press2": propagateDownward(name, value, false);
622 case "_Press3": propagateDownward(name, value, false);
623 case "_Release1": propagateDownward(name, value, false);
624 case "_Release2": propagateDownward(name, value, false);
625 case "_Release3": propagateDownward(name, value, false);
626 case "_Click1": propagateDownward(name, value, false);
627 case "_Click2": propagateDownward(name, value, false);
628 case "_Click3": propagateDownward(name, value, false);
629 case "_DoubleClick1": propagateDownward(name, value, false);
630 case "_DoubleClick2": propagateDownward(name, value, false);
631 case "_DoubleClick3": propagateDownward(name, value, false);
632 case "_KeyPressed": propagateDownward(name, value, false);
633 case "_KeyReleased": propagateDownward(name, value, false);
634 case "_HScroll": propagateDownward(name, value, false);
635 case "_VScroll": propagateDownward(name, value, false);
637 case "PosChange": return;
638 case "SizeChange": return;
639 case "childadded": return;
640 case "childremoved": return;
641 case "Enter": return;
642 case "Leave": return;
644 case "thisbox": if (value == null) removeSelf();
646 default: super.put(name, value);
650 private String alignToString() {
651 switch(flags & ALIGNS) {
652 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
653 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
654 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
655 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
656 case ALIGN_TOP: return "top";
657 case ALIGN_BOTTOM: return "bottom";
658 case ALIGN_LEFT: return "left";
659 case ALIGN_RIGHT: return "right";
660 case 0: return "center";
661 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
665 private void setAlign(Object value) {
667 case "center": clear(ALIGNS);
668 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
669 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
670 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
671 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
672 case "top": set(ALIGN_TOP);
673 case "bottom": set(ALIGN_BOTTOM);
674 case "left": set(ALIGN_LEFT);
675 case "right": set(ALIGN_RIGHT);
676 default: JS.log("invalid alignment \"" + value + "\"");
680 private void setCursor(Object value) {
681 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
682 if (value.equals(boxToCursor.get(this))) return;
684 boxToCursor.put(this, value);
685 Surface surface = getSurface();
686 if (surface != null) {
687 String tempcursor = surface.cursor;
688 propagateDownward(null, null, false);
689 if (surface.cursor != tempcursor) surface.syncCursor();
693 private void setFill(Object value) throws JSExn {
695 // FIXME: Check this... does this make it transparent?
698 } else if (value instanceof String) {
699 // FIXME check double set
700 int newfillcolor = stringToColor((String)value);
701 if (newfillcolor == fillcolor) return;
702 fillcolor = newfillcolor;
703 } else if(value instanceof JS) {
704 texture = Picture.load((JS)value, this);
706 throw new JSExn("fill must be null, a String, or a stream, not a " + value.getClass());
711 // FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
713 * Handles events which propagate down the box tree. If obscured
714 * is set, then we merely check for Enter/Leave.
716 private void propagateDownward(Object name_, Object value, boolean obscured) {
718 String name = (String)name_;
719 if (getSurface() == null) return;
720 int x = globalToLocalX(getSurface()._mousex);
721 int y = globalToLocalY(getSurface()._mousey);
722 boolean wasinside = test(MOUSEINSIDE);
723 boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
724 if (!wasinside && isinside) {
726 putAndTriggerTrapsAndCatchExceptions("Enter", T);
728 if (isinside && test(CURSOR)) getSurface().cursor = (String)boxToCursor.get(this);
729 if (wasinside && !isinside) {
731 putAndTriggerTrapsAndCatchExceptions("Leave", T);
734 boolean found = false;
735 if (wasinside || isinside)
736 for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
737 boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
738 Object value2 = value;
739 if (name.equals("_HScroll") || name.equals("_VScroll"))
740 value2 = N(((Number)value).floatValue() * ((float)child.fontSize()) / (float)fontSize());
741 if (obscured || !child.inside(x - child.x, y - child.y)) {
742 child.propagateDownward(name, value2, true);
745 child.clear(STOP_UPWARD_PROPAGATION);
746 if (name != null) child.putAndTriggerTrapsAndCatchExceptions(name, value2);
747 else child.propagateDownward(name, value2, obscured);
749 if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
751 if (child.inside(x - child.x, y - child.y))
752 if (name != null && name.equals("_Move")) obscured = true;
756 if (!obscured && !found)
757 if ("_Move".equals(name) || wasinside)
759 putAndTriggerTrapsAndCatchExceptions(name.substring(1), value);
762 private static int stringToColor(String s) {
763 // FIXME support three-char strings by doubling digits
764 if (s == null) return 0x00000000;
765 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
766 else if (s.length() == 7 && s.charAt(0) == '#') try {
769 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
770 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
771 Integer.parseInt(s.substring(5, 7), 16);
772 } catch (NumberFormatException e) {
773 Log.info(Box.class, "invalid color " + s);
776 else return 0; // FEATURE: error?
779 private static String colorToString(int argb) {
780 if ((argb & 0xFF000000) == 0) return null;
781 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
782 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
783 String blue = Integer.toHexString(argb & 0x000000FF);
784 if (red.length() < 2) red = "0" + red;
785 if (blue.length() < 2) blue = "0" + blue;
786 if (green.length() < 2) green = "0" + green;
787 return "#" + red + green + blue;
790 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
791 public static Box whoIs(Box cur, int x, int y) {
793 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
797 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
798 // ANY part of Ibex, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
800 if (!cur.test(VISIBLE)) return null;
801 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
803 for(int i=cur.treeSize() - 1; i>=0; i--) {
804 Box child = cur.getChild(i);
805 if (child == null) continue; // since this method is unsynchronized, we have to double-check
808 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
818 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
820 static short min(short a, short b) { if (a<b) return a; else return b; }
821 static int min(int a, int b) { if (a<b) return a; else return b; }
822 static float min(float a, float b) { if (a<b) return a; else return b; }
824 static short max(short a, short b) { if (a>b) return a; else return b; }
825 static int max(int a, int b) { if (a>b) return a; else return b; }
826 static float max(float a, float b) { if (a>b) return a; else return b; }
828 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; }
829 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; }
830 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
831 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
833 void set(int mask) { flags |= mask; }
834 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
835 void clear(int mask) { flags &= ~mask; }
836 boolean test(int mask) { return ((flags & mask) == mask); }
839 // Tree Handling //////////////////////////////////////////////////////////////////////
841 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
842 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
843 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
844 public final Box getChild(int i) {
845 if (i < 0) return null;
846 if (i >= treeSize()) return null;
847 return (Box)getNode(i);
850 // Tree Manipulation /////////////////////////////////////////////////////////////////////
853 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
854 Surface surface = Surface.fromBox(this);
855 if (surface != null) surface.dispose(true);
858 /** remove the i^th child */
859 public void removeChild(int i) {
863 b.clear(MOUSEINSIDE);
867 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
870 public void put(int i, Object value) throws JSExn {
873 if (value != null && !(value instanceof Box)) {
874 if (Log.on) JS.warn("attempt to set a numerical property on a box to a non-box");
878 if (redirect == null) {
879 if (value == null) putAndTriggerTrapsAndCatchExceptions("childremoved", getChild(i));
880 else JS.warn("attempt to add/remove children to/from a node with a null redirect");
882 } else if (redirect != this) {
883 if (value != null) putAndTriggerTrapsAndCatchExceptions("childadded", value);
884 redirect.put(i, value);
886 Box b = (Box)redirect.get(new Integer(i));
887 if (b != null) putAndTriggerTrapsAndCatchExceptions("childremoved", b);
890 } else if (value == null) {
891 if (i < 0 || i > treeSize()) return;
894 putAndTriggerTrapsAndCatchExceptions("childremoved", b);
899 // check if box being moved is currently target of a redirect
900 for(Box cur = b.parent; cur != null; cur = cur.parent)
901 if (cur.redirect == b) {
902 if (Log.on) JS.warn("attempt to move a box that is the target of a redirect");
906 // check for recursive ancestor violation
907 for(Box cur = this; cur != null; cur = cur.parent)
909 if (Log.on) JS.warn("attempt to make a node a parent of its own ancestor");
910 if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
914 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
918 // need both of these in case child was already uncalc'ed
923 putAndTriggerTrapsAndCatchExceptions("childadded", b);
927 void putAndTriggerTrapsAndCatchExceptions(Object name, Object val) {
929 putAndTriggerTraps(name, val);
931 JS.log("caught js exception while putting to trap \""+name+"\"");
933 } catch (Exception e) {
934 JS.log("caught exception while putting to trap \""+name+"\"");
949 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
950 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
951 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
952 // FIXME: separate offset_x needed for the path
954 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
955 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
956 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
957 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
958 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
959 int left = min(min(x1, x2), min(x3, x4));
960 int right = max(max(x1, x2), max(x3, x4));
961 contentwidth = max(contentwidth, right - left);
962 offset_x = -1 * left;
969 if (rtransform == null) rpath = null;
970 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
972 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
973 rtransform = a.copy();
975 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
976 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
977 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
983 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
984 if (transform != null) a2.multiply(transform);
985 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));