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 {
44 // Macros //////////////////////////////////////////////////////////////////////
47 //#define MARK_REPACK for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
48 //#define MARK_REPACK_b for(Box b2 = b; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
49 //#define MARK_REPACK_parent for(Box b2 = parent; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK);
50 //#define MARK_REFLOW for(Box b2 = this; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
51 //#define MARK_REFLOW_b for(Box b2 = b; b2 != null && !b2.test(REFLOW); b2 = b2.parent) b2.set(REFLOW);
52 //#define MARK_RESIZE for(Box b2 = this; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
53 //#define MARK_RESIZE_b for(Box b2 = b; b2 != null && !b2.test(RESIZE); b2 = b2.parent) b2.set(RESIZE);
54 //#define CHECKSET_SHORT(prop) short nu = (short)toInt(value); if (nu == prop) break; prop = nu;
55 //#define CHECKSET_INT(prop) int nu = toInt(value); if (nu == prop) break; prop = nu;
56 //#define CHECKSET_FLAG(flag) boolean nu = toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
57 //#define CHECKSET_BOOLEAN(prop) boolean nu = toBoolean(value); if (nu == prop) break; prop = nu;
58 //#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&value.equals(prop))) break; prop=(String)value;
60 protected Box() { super(null); }
62 static Hash boxToCursor = new Hash(500, 3);
63 public static final int MAX_LENGTH = Integer.MAX_VALUE;
64 static final Font DEFAULT_FONT = Font.getFont((Res)Main.builtin.get("fonts/vera/Vera.ttf"), 10);
66 // box properties can not be trapped
67 static final String[] props = new String[] {
68 "fill", "stroke", "image", "tile", "fixedaspect", "text", "path", "font",
69 "shrink", "hshrink", "vshrink", "x", "y", "width", "height", "cols", "rows",
70 "colspan", "rowspan", "align", "invisible", "absolute", "globalx", "globaly",
71 "minwidth", "maxwidth", "minheight", "maxheight",
72 "numchildren", "redirect", "cursor", "mousex", "mousey", "xwt", "static",
73 "mouseinside", "root", "thisbox", "indexof"
76 // events can have write traps, but not read traps
77 static final String[] events = new String[] {
78 "Press1", "Press2", "Press3",
79 "Release1", "Release2", "Release3",
80 "Click1", "Click2", "Click3",
81 "DoubleClick1", "DoubleClick2", "DoubleClick3",
82 "Enter", "Leave", "Move",
83 "KeyPressed", "KeyReleased", "PosChange", "SizeChange",
85 "childadded", "childremoved",
87 "Focused", "Maximized", "Minimized", "Close",
88 "icon", "titlebar", "toback", "tofront"
91 // Flags //////////////////////////////////////////////////////////////////////
93 static final int MOUSEINSIDE = 0x00000001;
94 static final int VISIBLE = 0x00000002;
95 static final int PACKED = 0x00000004;
96 static final int HSHRINK = 0x00000008;
97 static final int VSHRINK = 0x00000010;
98 static final int BLACK = 0x00000020; // for red-black code
100 static final int FIXED = 0x00000040;
101 static final boolean ROWS = true;
102 static final boolean COLS = false;
104 static final int ISROOT = 0x00000080;
105 static final int REPACK = 0x00000100;
106 static final int REFLOW = 0x00000200;
107 static final int RESIZE = 0x00000400;
108 static final int RECONSTRAIN = 0x00000800;
109 static final int ALIGN_TOP = 0x00001000;
110 static final int ALIGN_BOTTOM = 0x00002000;
111 static final int ALIGN_LEFT = 0x00004000;
112 static final int ALIGN_RIGHT = 0x00008000;
113 static final int ALIGNS = 0x0000f000;
114 static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
115 static final int NOCLIP = 0x00020000;
118 // Instance Data //////////////////////////////////////////////////////////////////////
122 int flags = VISIBLE | PACKED | REPACK | REFLOW | RESIZE | FIXED /* ROWS */;
124 private String text = null;
125 private Font font = DEFAULT_FONT;
126 private Picture.Holder texture;
127 private short strokewidth = 1;
128 private int fillcolor = 0x00000000;
129 private int strokecolor = 0xFF000000;
131 // specified directly by user
132 public LENGTH minwidth = 0;
133 public LENGTH maxwidth = MAX_LENGTH;
134 public LENGTH minheight = 0;
135 public LENGTH maxheight = MAX_LENGTH;
136 private short rows = 1;
137 private short cols = 0;
138 private short rowspan = 1;
139 private short colspan = 1;
141 // computed during reflow
142 private short row = 0;
143 private short col = 0;
146 public LENGTH width = 0;
147 public LENGTH height = 0;
148 private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
149 private LENGTH contentheight = 0;
152 private VectorGraphics.VectorPath path = null;
153 private VectorGraphics.Affine transform = null;
154 private VectorGraphics.RasterPath rpath = null;
155 private VectorGraphics.Affine rtransform = null;
158 // Instance Methods /////////////////////////////////////////////////////////////////////
160 public Box getRoot() { return parent == null ? this : parent.getRoot(); }
161 public Surface getSurface() { return Surface.fromBox(getRoot()); }
163 // FEATURE: use cx2/cy2 format
164 /** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
165 public void dirty() { dirty(0, 0, width, height); }
166 public void dirty(int x, int y, int w, int h) {
167 for(Box cur = this; cur != null; cur = cur.parent) {
168 if (!cur.test(NOCLIP)) {
169 w = min(x + w, cur.width) - max(x, 0);
170 h = min(y + h, cur.height) - max(y, 0);
174 if (w <= 0 || h <= 0) return;
175 if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
181 /** update MOUSEINSIDE, check for Enter/Leave/Move */
182 void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
183 void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
184 boolean wasinside = test(MOUSEINSIDE);
185 boolean isinside = test(VISIBLE) && inside(mousex, mousey) && !forceleave;
186 if (isinside) set(MOUSEINSIDE); else clear(MOUSEINSIDE);
187 if (!wasinside && !isinside) return;
189 if (isinside && test(CURSOR)) Surface.fromBox(getRoot()).cursor = (String)boxToCursor.get(this);
190 if (!wasinside && isinside && getTrap("Enter") != null) putAndTriggerTraps("Enter", T);
191 else if (wasinside && !isinside && getTrap("Leave") != null) putAndTriggerTraps("Leave", T);
192 else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && getTrap("Move")!= null)
193 putAndTriggerTraps("Move", T);
194 for(Box b = getChild(treeSize() - 1); b != null; b = b.prevSibling()) {
195 b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
196 if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
201 // Reflow ////////////////////////////////////////////////////////////////////////////////////////
203 // static stuff so we don't have to keep reallocating
204 private static int[] numRowsInCol = new int[65535];
205 private static LENGTH[] colWidth = new LENGTH[65535];
206 private static LENGTH[] colMaxWidth = new LENGTH[65535];
207 private static LENGTH[] rowHeight = new LENGTH[65535];
208 private static LENGTH[] rowMaxHeight = new LENGTH[65535];
209 static { for(int i=0; i<rowMaxHeight.length; i++) { rowMaxHeight[i] = MAX_LENGTH; colMaxWidth[i] = MAX_LENGTH; } }
211 Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
212 Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
214 /** only for use on the root box */
215 void reflow(int new_width, int new_height) {
218 new_width = bound(max(contentwidth, minwidth), new_width, test(HSHRINK) ? max(contentwidth, minwidth) : maxwidth);
219 new_height = bound(max(contentheight, minheight), new_height, test(VSHRINK) ? max(contentheight, minheight) : maxheight);
221 resize(x, y, new_width, new_height);
225 /** pack the boxes into rows and columns; also computes contentwidth */
227 for(Box child = getChild(0); child != null; child = child.nextSibling()) child.repack();
229 //#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan
230 if (test(FIXED) == COLS) {
232 for(Box child = firstPackedChild(); child != null; r++) {
233 for(short c=0, numclear=0; child != null && c < cols; c++) {
234 if (numRowsInCol[c] > r) { numclear = 0; continue; }
235 if (c != 0 && c + min(cols, child.colspan) - numclear > cols) break;
236 if (++numclear < min(cols, child.colspan)) continue;
237 for(int i=c - numclear + 1; i <= c; i++) numRowsInCol[i] += child.rowspan;
238 child.col = (short)(c - numclear + 1); child.row = r;
239 rows = (short)max(rows, child.row + child.rowspan);
240 child = child.nextPackedSibling();
244 for(int i=0; i<cols; i++) numRowsInCol[i] = 0;
248 //#repeat contentwidth/contentheight colWidth/rowHeight colspan/rowspan col/row cols/rows minwidth/minheight \
249 // textwidth/textheight maxwidth/maxheight
251 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
252 colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
253 for(int i=0; i<cols; i++) { contentwidth += colWidth[i]; colWidth[i] = 0; }
254 contentwidth = bound(minwidth, max(font == null || text == null ? 0 : font.textwidth(text), contentwidth), maxwidth);
258 private void resize(LENGTH x, LENGTH y, LENGTH width, LENGTH height) {
259 // FEATURE reimplement, but we're destroying this
260 // FIXME: uncommenting this breaks; see http://bugs.xwt.org/show_bug.cgi?id=345
261 //if (x != this.x || y != this.y || width != this.width || height != this.height) {
262 (parent == null ? this : parent).dirty(this.x, this.y, this.width, this.height);
263 boolean sizechange = (this.width != width || this.height != height) && getTrap("SizeChange") != null;
264 boolean poschange = (this.x != x || this.y != y) && getTrap("PosChange") != null;
265 this.width = width; this.height = height; this.x = x; this.y = y;
267 if (sizechange) try { putAndTriggerTraps("SizeChange", T); /*Surface.abort = true;*/ }
268 catch (Exception e) { Log.log(this, e); }
269 if (poschange) try { putAndTriggerTraps("PosChange", T); /*Surface.abort = true;*/ }
270 catch (Exception e) { Log.log(this, e); }
274 private void resize_children() {
276 //#repeat col/row colspan/rowspan contentwidth/contentheight x/y width/height colMaxWidth/rowMaxHeight colWidth/rowHeight \
277 // HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight colWidth/rowHeight x_slack/y_slack
278 // PHASE 1: compute column min/max sizes
280 for(int i=0; i<cols; i++) x_slack -= colWidth[i];
281 for(Box child = firstPackedChild(); child != null; child = child.nextPackedSibling())
282 for(int i=child.col; i < child.col + child.colspan; i++) {
283 x_slack += colWidth[i];
284 colWidth[i] = max(colWidth[i], child.contentwidth / child.colspan);
285 x_slack -= colWidth[i];
286 colMaxWidth[i] = min(colMaxWidth[i], child.test(HSHRINK) ? child.contentwidth : child.maxwidth) / child.colspan;
289 // PHASE 2: hand out slack
290 for(int startslack = 0; x_slack > 0 && cols > 0 && startslack != x_slack;) {
291 int increment = max(1, x_slack / cols);
292 startslack = x_slack;
293 for(short col=0; col < cols; col++) {
294 int diff = min(colMaxWidth[col], colWidth[col] + increment) - colWidth[col];
296 colWidth[col] += diff;
301 // Phase 3: assign childrens' actual sizes
302 for(Box child = getChild(0); child != null; child = child.nextSibling()) {
303 if (!child.test(VISIBLE)) continue;
304 int child_width, child_height, child_x, child_y;
305 if (!child.test(PACKED)) {
308 child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - child.x);
309 child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - child.y);
310 child_width = max(child.minwidth, child_width);
311 child_height = max(child.minheight, child_height);
314 //#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
315 // child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
316 // colWidth/rowHeight child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP
318 for(int i = child.col; i < child.col + child.colspan; i++) unbounded += colWidth[i];
319 child_width = min(unbounded, child.test(HSHRINK) ? child.contentwidth : child.maxwidth);
320 child_x = test(ALIGN_RIGHT) ? x_slack : test(ALIGN_LEFT) ? 0 : x_slack / 2;
321 for(int i=0; i < child.col; i++) child_x += colWidth[i];
322 if (child_width > unbounded) child_x -= (child_width - unbounded) / 2;
325 child.resize(child_x, child_y, child_width, child_height);
329 for(int i=0; i<cols; i++) { colWidth[i] = 0; colMaxWidth[i] = MAX_LENGTH; }
330 for(int i=0; i<rows; i++) { rowHeight[i] = 0; rowMaxHeight[i] = MAX_LENGTH; }
332 for(Box child = getChild(0); child != null; child = child.nextSibling())
334 child.resize_children();
339 // Rendering Pipeline /////////////////////////////////////////////////////////////////////
341 /** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
342 void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, VectorGraphics.Affine a) {
343 if (!test(VISIBLE)) return;
344 int globalx = parentx + (parent == null ? 0 : x);
345 int globaly = parenty + (parent == null ? 0 : y);
347 // intersect the x,y,w,h rendering window with ourselves; quit if it's empty
349 cx1 = max(cx1, parent == null ? 0 : globalx);
350 cy1 = max(cy1, parent == null ? 0 : globaly);
351 cx2 = min(cx2, globalx + width);
352 cy2 = min(cy2, globaly + height);
353 if (cx2 <= cx1 || cy2 <= cy1) return;
356 if ((fillcolor & 0xFF000000) != 0x00000000)
357 buf.fillTrapezoid(globalx, globalx + width, globaly, globalx, globalx + width, globaly + height, fillcolor);
359 if (texture != null && texture.picture != null)
360 for(int x = globalx; x < cx2; x += texture.picture.getWidth())
361 for(int y = globaly; y < cy2; y += texture.picture.getHeight())
362 buf.drawPicture(texture.picture, x, y, cx1, cy1, cx2, cy2);
364 if (text != null && !text.equals("") && font != null)
365 if (font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2, null) == -1)
366 font.rasterizeGlyphs(text, buf, strokecolor, globalx, globaly, cx1, cy1, cx2, cy2,
367 new Scheduler.Task() { public void perform() { Box b = Box.this; MARK_REFLOW_b; dirty(); }});
369 for(Box b = getChild(0); b != null; b = b.nextSibling())
370 b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
374 // Methods to implement org.xwt.js.JS //////////////////////////////////////
376 public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
377 public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
378 public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
379 public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
381 public Object callMethod(Object method, Object a0, Object a1, Object a2, Object[] rest, int nargs) throws JSExn {
382 if (nargs != 1 || !"indexof".equals(method)) return super.callMethod(method, a0, a1, a2, rest, nargs);
384 if (b.parent != this)
385 return (redirect == null || redirect == this) ?
387 redirect.callMethod(method, a0, a1, a2, rest, nargs);
388 return N(b.getIndexInParent());
391 public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
393 protected boolean isTrappable(Object key, boolean isRead) {
394 if (key == null) return false;
395 else if (key instanceof String) {
396 // not allowed to trap box properties, and no read traps on events
397 String name = (String)key;
398 for (int i=0; i < props.length; i++) if (name.equals(props[i])) return false;
399 if (isRead) for (int i=0; i < events.length; i++) if (name.equals(events[i])) return false;
405 public Object get(Object name) throws JSExn {
406 if (name instanceof Number)
407 return redirect == null ? null : redirect == this ? getChild(toInt(name)) : redirect.get(name);
410 case "indexof": return METHOD;
411 case "text": return text;
412 case "path": throw new JSExn("cannot read from the path property");
413 case "fill": return colorToString(fillcolor);
414 case "strokecolor": return colorToString(strokecolor);
415 case "textcolor": return colorToString(strokecolor);
416 case "font": return font == null ? null : font.res;
417 case "fontsize": return font == null ? N(10) : N(font.pointsize);
418 case "strokewidth": return N(strokewidth);
419 case "align": return alignToString();
420 case "thisbox": return this;
421 case "shrink": return B(test(HSHRINK) || test(VSHRINK));
422 case "hshrink": return B(test(HSHRINK));
423 case "vshrink": return B(test(VSHRINK));
424 case "x": return (parent == null || !test(VISIBLE)) ? N(0) : N(x);
425 case "y": return (parent == null || !test(VISIBLE)) ? N(0) : N(y);
426 case "width": return N(width);
427 case "height": return N(height);
428 case "cols": return test(FIXED) == COLS ? N(cols) : N(0);
429 case "rows": return test(FIXED) == ROWS ? N(rows) : N(0);
430 case "colspan": return N(colspan);
431 case "rowspan": return N(rowspan);
432 case "noclip": return B(test(NOCLIP));
433 case "visible": return B(test(VISIBLE) && (parent == null || (parent.get("visible") == T)));
434 case "packed": return B(test(PACKED));
435 case "globalx": return N(localToGlobalX(0));
436 case "globaly": return N(localToGlobalY(0));
437 case "cursor": return test(CURSOR) ? boxToCursor.get(this) : null;
438 case "mousex": { Surface s = getSurface(); return N(s == null ? 0 : globalToLocalX(s.mousex)); }
439 case "mousey": { Surface s = getSurface(); return N(s == null ? 0 : globalToLocalY(s.mousey)); }
440 case "mouseinside": return B(test(MOUSEINSIDE));
441 case "numchildren": return redirect == null ? N(0) : redirect == this ? N(treeSize()) : redirect.get("numchildren");
442 case "minwidth": return N(minwidth);
443 case "maxwidth": return N(maxwidth);
444 case "minheight": return N(minheight);
445 case "maxheight": return N(maxheight);
446 case "redirect": return redirect == null ? null : redirect == this ? T : redirect.get("redirect");
447 case "Minimized": if (parent == null && getSurface() != null) return B(getSurface().minimized);
448 default: return super.get(name);
450 throw new Error("unreachable"); // unreachable
453 public void put(Object name, Object value) throws JSExn {
454 if (name instanceof Number) { put(toInt(name), value); return; }
456 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
457 case "strokecolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
458 case "textcolor": value = N(stringToColor((String)value)); CHECKSET_INT(strokecolor); MARK_RESIZE; dirty();
459 case "text": CHECKSET_STRING(text); MARK_RESIZE; dirty();
460 case "strokewidth": CHECKSET_SHORT(strokewidth); dirty();
461 case "shrink": put("hshrink", value); put("vshrink", value);
462 case "hshrink": CHECKSET_FLAG(HSHRINK); MARK_RESIZE;
463 case "vshrink": CHECKSET_FLAG(VSHRINK); MARK_RESIZE;
464 case "width": if (parent==null&&Surface.fromBox(this)!=null) { Surface.fromBox(this).setWidth(toInt(value)); } else { put("maxwidth", value); put("minwidth", value); MARK_RESIZE; }
465 case "height": if (parent == null&&Surface.fromBox(this)!=null) { Surface.fromBox(this).setHeight(toInt(value)); } else { put("maxheight", value); put("minheight", value); MARK_RESIZE; }
466 case "maxwidth": CHECKSET_INT(maxwidth); MARK_RESIZE;
467 case "minwidth": CHECKSET_INT(minwidth); MARK_RESIZE;
468 case "maxheight": CHECKSET_INT(maxheight); MARK_RESIZE;
469 case "minheight": CHECKSET_INT(minheight); MARK_RESIZE;
470 case "colspan": CHECKSET_SHORT(colspan); MARK_REPACK_parent;
471 case "rowspan": CHECKSET_SHORT(rowspan); MARK_REPACK_parent;
472 case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); MARK_REPACK;
473 case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); MARK_REPACK;
474 case "noclip": CHECKSET_FLAG(NOCLIP); if (parent == null) dirty(); else parent.dirty();
475 case "visible": CHECKSET_FLAG(VISIBLE); dirty(); MARK_RESIZE; dirty();
476 case "packed": CHECKSET_FLAG(PACKED); MARK_REPACK_parent;
477 case "globalx": put("x", N(globalToLocalX(toInt(value))));
478 case "globaly": put("y", N(globalToLocalY(toInt(value))));
479 case "align": clear(ALIGNS); setAlign(value == null ? "center" : value); MARK_RESIZE;
480 case "cursor": setCursor(value);
481 case "fill": setFill(value);
482 case "Press1": mouseEvent("Press1", value);
483 case "Press2": mouseEvent("Press2", value);
484 case "Press3": mouseEvent("Press3", value);
485 case "Release1": mouseEvent("Release1", value);
486 case "Release2": mouseEvent("Release2", value);
487 case "Release3": mouseEvent("Release3", value);
488 case "Click1": mouseEvent("Click1", value);
489 case "Click2": mouseEvent("Click2", value);
490 case "Click3": mouseEvent("Click3", value);
491 case "DoubleClick1": mouseEvent("DoubleClick1", value);
492 case "DoubleClick2": mouseEvent("DoubleClick2", value);
493 case "DoubleClick3": mouseEvent("DoubleClick3", value);
494 case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
495 case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
496 case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
497 case "toback": if (parent == null && getSurface() != null && toBoolean(value)) { getSurface().toBack(); }
498 case "tofront": if (parent == null && getSurface() != null && toBoolean(value)) { getSurface().toFront(); }
499 case "redirect": if (redirect == this) redirect = (Box)value; else Log.log(this, "redirect can only be set once");
500 case "font": font = value == null ? null : Font.getFont((Res)value, font == null ? 10 : font.pointsize); MARK_RESIZE; dirty();
501 case "fontsize": font = Font.getFont(font == null ? null : font.res, toInt(value)); MARK_RESIZE; dirty();
502 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(); }
503 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(); }
504 case "KeyPressed": return; // prevent stuff from hitting the Hash
505 case "KeyReleased": return; // prevent stuff from hitting the Hash
506 case "PosChange": return; // prevent stuff from hitting the Hash
507 case "SizeChange": return; // prevent stuff from hitting the Hash
508 case "childadded": return; // prevent stuff from hitting the Hash
509 case "childremoved": return; // prevent stuff from hitting the Hash
511 if (value != null) break;
512 if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
513 Surface surface = Surface.fromBox(this);
514 if (surface != null) surface.dispose(true);
516 default: super.put(name, value);
520 private String alignToString() {
521 switch(flags & ALIGNS) {
522 case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
523 case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
524 case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
525 case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
526 case ALIGN_TOP: return "top";
527 case ALIGN_BOTTOM: return "bottom";
528 case ALIGN_LEFT: return "left";
529 case ALIGN_RIGHT: return "right";
530 case 0: return "center";
531 default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
535 private void setAlign(Object value) {
537 case "center": clear(ALIGNS);
538 case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
539 case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
540 case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
541 case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
542 case "top": set(ALIGN_TOP);
543 case "bottom": set(ALIGN_BOTTOM);
544 case "left": set(ALIGN_LEFT);
545 case "right": set(ALIGN_RIGHT);
546 default: Log.logJS("invalid alignment \"" + value + "\"");
550 private void setCursor(Object value) {
551 if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
552 if (value.equals(boxToCursor.get(this))) return;
554 boxToCursor.put(this, value);
555 Surface surface = getSurface();
556 String tempcursor = surface.cursor;
557 Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
558 if (surface.cursor != tempcursor) surface.syncCursor();
561 private void setFill(Object value) {
562 if (value == null) return;
563 if (value instanceof String) {
564 // FIXME check double set
565 int newfillcolor = stringToColor((String)value);
566 if (newfillcolor == fillcolor) return;
567 fillcolor = newfillcolor;
571 if (!(value instanceof Res)) return;
572 texture = Picture.fromRes((Res)value, null);
573 if (texture != null) {
574 minwidth = texture.picture.getWidth();
575 minheight = texture.picture.getHeight();
580 texture = Picture.fromRes((Res)value, new Scheduler.Task() { public void perform() {
581 minwidth = texture.picture.getWidth();
582 minheight = texture.picture.getHeight();
583 Box b = Box.this; MARK_REFLOW_b;
588 private void mouseEvent(String name, Object value) {
589 Surface surface = getSurface();
590 if (surface == null) return;
591 int mousex = globalToLocalX(surface.mousex);
592 int mousey = globalToLocalY(surface.mousey);
593 for(Box c = prevSibling(); c != null; c = c.prevSibling())
594 if (c.inside(mousex - c.x, mousey - c.y)) { c.putAndTriggerTraps(name, value); return; }
595 if (parent != null) parent.putAndTriggerTraps(name, value);
598 private static int stringToColor(String s) {
599 if (s == null) return 0x00000000;
600 else if (SVG.colors.get(s) != null) return 0xFF000000 | toInt(SVG.colors.get(s));
601 else if (s.length() > 0 && s.charAt(0) == '#') try {
604 (Integer.parseInt(s.substring(1, 3), 16) << 16) |
605 (Integer.parseInt(s.substring(3, 5), 16) << 8) |
606 Integer.parseInt(s.substring(5, 7), 16);
607 } catch (NumberFormatException e) {
608 Log.log(Box.class, "invalid color " + s);
611 else return 0; // FEATURE: error?
614 private static String colorToString(int argb) {
615 if ((argb & 0xFF000000) == 0) return null;
616 String red = Integer.toHexString((argb & 0x00FF0000) >> 16);
617 String green = Integer.toHexString((argb & 0x0000FF00) >> 8);
618 String blue = Integer.toHexString(argb & 0x000000FF);
619 if (red.length() < 2) red = "0" + red;
620 if (blue.length() < 2) blue = "0" + blue;
621 if (green.length() < 2) green = "0" + green;
622 return "#" + red + green + blue;
625 /** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
626 public static Box whoIs(Box cur, int x, int y) {
628 if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
632 // WARNING: this method is called from the event-queueing thread -- it may run concurrently with
633 // ANY part of XWT, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
635 if (!cur.test(VISIBLE)) return null;
636 if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
638 for(int i=cur.treeSize() - 1; i>=0; i--) {
639 Box child = cur.getChild(i);
640 if (child == null) continue; // since this method is unsynchronized, we have to double-check
643 if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
653 // Trivial Helper Methods (should be inlined) /////////////////////////////////////////
655 static short min(short a, short b) { if (a<b) return a; else return b; }
656 static int min(int a, int b) { if (a<b) return a; else return b; }
657 static float min(float a, float b) { if (a<b) return a; else return b; }
659 static short max(short a, short b) { if (a>b) return a; else return b; }
660 static int max(int a, int b) { if (a>b) return a; else return b; }
661 static float max(float a, float b) { if (a>b) return a; else return b; }
663 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; }
664 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; }
665 static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
666 final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
668 void set(int mask) { flags |= mask; }
669 void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
670 void clear(int mask) { flags &= ~mask; }
671 boolean test(int mask) { return ((flags & mask) == mask); }
674 // Tree Handling //////////////////////////////////////////////////////////////////////
676 public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
677 public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
678 public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
679 public final Box getChild(int i) {
680 if (i < 0) return null;
681 if (i >= treeSize()) return null;
682 return (Box)getNode(i);
685 // Tree Manipulation /////////////////////////////////////////////////////////////////////
687 /** remove the i^th child */
688 public void removeChild(int i) {
692 b.clear(MOUSEINSIDE);
696 putAndTriggerTraps("childremoved", b);
699 public void put(int i, Object value) throws JSExn {
702 if (value != null && !(value instanceof Box)) {
703 if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to a non-box");
707 if (redirect == null) {
708 if (value == null) putAndTriggerTraps("childremoved", getChild(i));
709 else Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
711 } else if (redirect != this) {
712 if (value != null) putAndTriggerTraps("childadded", value);
713 redirect.put(i, value);
715 Box b = (Box)redirect.get(new Integer(i));
716 if (b != null) putAndTriggerTraps("childremoved", b);
719 } else if (value == null) {
720 if (i < 0 || i > treeSize()) return;
723 putAndTriggerTraps("childremoved", b);
728 // check if box being moved is currently target of a redirect
729 for(Box cur = b.parent; cur != null; cur = cur.parent)
730 if (cur.redirect == b) {
731 if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
735 // check for recursive ancestor violation
736 for(Box cur = this; cur != null; cur = cur.parent)
738 if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
739 if (Log.on) Log.log(this, "box == " + this + " ancestor == " + b);
743 if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
747 // need both of these in case child was already uncalc'ed
752 putAndTriggerTraps("childadded", b);
757 public final void putAndTriggerTraps(Object key, Object value) {
759 super.putAndTriggerTraps(key, value);
760 } catch (JSExn jse) {
761 Log.logJS("attempt to put value " + value + " to key " + key + " on a box triggered a trap which threw:");
766 public final Object getAndTriggerTraps(Object key) {
768 return super.getAndTriggerTraps(key);
769 } catch (JSExn jse) {
770 Log.logJS("attempt to get key " + key + " on a box triggered a trap which threw:");
785 if (rpath == null) rpath = path.realize(transform == null ? VectorGraphics.Affine.identity() : transform);
786 if ((flags & HSHRINK) != 0) contentwidth = max(contentwidth, rpath.boundingBoxWidth());
787 if ((flags & VSHRINK) != 0) contentheight = max(contentheight, rpath.boundingBoxHeight());
788 // FIXME: separate offset_x needed for the path
790 // #repeat x1/y1 x2/y2 x3/y3 x4/y4 contentwidth/contentheight left/top right/bottom
791 int x1 = transform == null ? 0 : (int)transform.multiply_px(0, 0);
792 int x2 = transform == null ? 0 : (int)transform.multiply_px(contentwidth, 0);
793 int x3 = transform == null ? contentwidth : (int)transform.multiply_px(contentwidth, contentheight);
794 int x4 = transform == null ? contentwidth : (int)transform.multiply_px(0, contentheight);
795 int left = min(min(x1, x2), min(x3, x4));
796 int right = max(max(x1, x2), max(x3, x4));
797 contentwidth = max(contentwidth, right - left);
798 offset_x = -1 * left;
805 if (rtransform == null) rpath = null;
806 else if (!rtransform.equalsIgnoringTranslation(a)) rpath = null;
808 rpath.translate((int)(a.e - rtransform.e), (int)(a.f - rtransform.f));
809 rtransform = a.copy();
811 if (rpath == null) rpath = path.realize((rtransform = a) == null ? VectorGraphics.Affine.identity() : a);
812 if ((strokecolor & 0xff000000) != 0) rpath.stroke(buf, 1, strokecolor);
813 if ((fillcolor & 0xff000000) != 0) rpath.fill(buf, new VectorGraphics.SingleColorPaint(fillcolor));
819 VectorGraphics.Affine a2 = VectorGraphics.Affine.translate(b.x, b.y);
820 if (transform != null) a2.multiply(transform);
821 a2.multiply(VectorGraphics.Affine.translate(offset_x, offset_y));