// FIXME
// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
package org.ibex.core;
// FIXME: are traps on x/y meaningful?
// FIXME: if we trap on cols, then set rows to 0 (forcing cols to 1), does the cols trap get triggered?
// FIXME: if we change min{width/height}, thereby forcing a change to max{min/height}, does a trap on those get triggered?
// FIXME: trap on numchildren? replaces ChildChanged?
// FIXME: trap on visible, trigger when parent visibility changes
// FIXME: ax/ay nonsense
// FIXME: mouse move/release still needs to propagate to boxen in which the mouse was pressed and is still held down
// FEATURE: mark to reflow starting with a certain child
// FEATURE: reintroduce surface.abort
import java.util.*;
import org.ibex.js.*;
import org.ibex.util.*;
import org.ibex.graphics.*;
/**
*
* Encapsulates the data for a single Ibex box as well as all layout
* rendering logic.
*
*
* The rendering process consists of four phases; each requires
* one DFS pass over the tree
* - pack(): each box sets its childrens' row/col
*
- constrain(): contentwidth is computed
*
- resize(): width/height and x/y positions are set
*
- render(): children draw their content onto the PixelBuffer.
*
*
* The first three passes together are called the reflow
* phase. Reflowing is done in a seperate pass since SizeChanges
* trigger a Surface.abort; if rendering were done in the same pass,
* rendering work done prior to the Surface.abort would be wasted.
*/
public final class Box extends JSScope implements Task {
// Macros //////////////////////////////////////////////////////////////////////
final void REPLACE() { for(Box b2 = this; b2 != null && !b2.test(REPLACE); b2 = b2.parent) b2.set(REPLACE); }
final void RECONSTRAIN() { for(Box b2 = this; b2 != null && !b2.test(RECONSTRAIN); b2 = b2.parent) b2.set(RECONSTRAIN); }
final void REPACK() { for(Box b2 = this; b2 != null && !b2.test(REPACK); b2 = b2.parent) b2.set(REPACK); }
//#define CHECKSET_SHORT(prop) short nu = (short)toInt(value); if (nu == prop) break; prop = nu;
//#define CHECKSET_INT(prop) int nu = toInt(value); if (nu == prop) break; prop = nu;
//#define CHECKSET_FLAG(flag) boolean nu = toBoolean(value); if (nu == test(flag)) break; if (nu) set(flag); else clear(flag);
//#define CHECKSET_BOOLEAN(prop) boolean nu = toBoolean(value); if (nu == prop) break; prop = nu;
//#define CHECKSET_STRING(prop) if ((value==null&&prop==null)||(value!=null&&JS.toString(value).equals(prop))) break; prop=JS.toString(value);
public Box() { super(null); }
// FIXME memory leak
static Hash boxToCursor = new Hash(500, 3);
static final Font DEFAULT_FONT;
static {
try { DEFAULT_FONT = Font.getFont(Main.builtin.get(JS.S("fonts/vera/Vera.ttf")), 10); }
catch(JSExn e) { throw new Error("Error loading default font: " + e); }
}
// Flags //////////////////////////////////////////////////////////////////////
static final int MOUSEINSIDE = 0x00000001;
static final int VISIBLE = 0x00000002;
static final int PACKED = 0x00000004;
public static final int HSHRINK = 0x00000008;
public static final int VSHRINK = 0x00000010;
static final int BLACK = 0x00000020; // for red-black code
static final int FIXED = 0x00000040;
static final boolean ROWS = true;
static final boolean COLS = false;
static final int ISROOT = 0x00000080;
static final int REPACK = 0x00000100;
static final int RECONSTRAIN = 0x00000200;
static final int REPLACE = 0x00000400;
static final int ALIGN_TOP = 0x00001000;
static final int ALIGN_BOTTOM = 0x00002000;
static final int ALIGN_LEFT = 0x00004000;
static final int ALIGN_RIGHT = 0x00008000;
static final int ALIGNS = 0x0000f000;
static final int CURSOR = 0x00010000; // if true, this box has a cursor in the cursor hash; FEATURE: GC issues?
static final int CLIP = 0x00020000;
static final int STOP_UPWARD_PROPAGATION = 0x00040000;
static final int MOVED = 0x00080000;
// Instance Data //////////////////////////////////////////////////////////////////////
Box parent = null;
Box redirect = this;
int flags = VISIBLE | PACKED | REPACK | RECONSTRAIN | REPLACE | FIXED | STOP_UPWARD_PROPAGATION | CLIP | MOVED;
private String text = null;
private Font font = DEFAULT_FONT;
private Picture texture = null;
private short strokewidth = 1;
public int fillcolor = 0x00000000;
private int strokecolor = 0xFF000000;
private int aspect = 0;
// specified directly by user
public int minwidth = 0;
public int maxwidth = Integer.MAX_VALUE;
public int minheight = 0;
public int maxheight = Integer.MAX_VALUE;
private short rows = 1;
private short cols = 0;
private short rowspan = 1;
private short colspan = 1;
// computed during reflow
private short row = 0;
private short col = 0;
public int x = 0;
public int y = 0;
public int ax = 0; // FEATURE: roll these into x/y; requires lots of changes
public int ay = 0; // FEATURE: roll these into x/y; requires lots of changes; perhaps y()?
public int width = 0;
public int height = 0;
public int contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
public int contentheight = 0;
private Path path = null;
/*
private Affine transform = null;
private VectorGraphics.RasterPath rpath = null;
private Affine rtransform = null;
*/
// Instance Methods /////////////////////////////////////////////////////////////////////
public final int fontSize() { return font == null ? DEFAULT_FONT.pointsize : font.pointsize; }
/** invoked when a resource needed to render ourselves finishes loading */
public void perform() throws JSExn {
if (texture == null) { Log.warn(Box.class, "perform() called with null texture"); return; }
if (texture.isLoaded) {
setWidth(max(texture.width, minwidth), maxwidth);
setHeight(max(texture.height, minheight), maxheight);
dirty(); }
else { JS res = texture.stream; texture = null; throw new JSExn("image not found: "+res.unclone()); }
}
// FEATURE: use cx2/cy2 format
/** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
public void dirty() { dirty(0, 0, width, height); }
public void dirty(int x, int y, int w, int h) {
for(Box cur = this; cur != null; cur = cur.parent) {
// x and y have a different meaning on the root box
if (cur.parent != null && cur.test(CLIP)) {
w = min(x + w, cur.width) - max(x, 0);
h = min(y + h, cur.height) - max(y, 0);
x = max(x, 0);
y = max(y, 0);
}
if (w <= 0 || h <= 0) return;
if (cur.parent == null && cur.getSurface() != null) cur.getSurface().dirty(x, y, w, h);
x += cur.x;
y += cur.y;
}
}
// Reflow ////////////////////////////////////////////////////////////////////////////////////////
/** should only be invoked on the root box */
public void reflow() {
pack();
resize(x, y,
test(HSHRINK) ? contentwidth : maxwidth,
test(VSHRINK) ? contentheight : maxheight);
place();
}
private static Box[] frontier = new Box[65535];
/** pack the boxes into rows and columns, compute contentwidth */
public void pack() {
if (!test(REPACK)) { constrain(); return; }
boolean haskid = false;
for(Box child = getChild(0); child != null; child = child.nextSibling()) { haskid = true; child.pack(); }
if (!haskid) { clear(REPACK); constrain(); return; }
int frontier_size = 0;
//#repeat COLS/ROWS rows/cols cols/rows col/row row/col colspan/rowspan rowspan/colspan \
// contentheight/contentwidth contentwidth/contentheight
if (test(FIXED) == COLS) {
rows = 0;
for(Box child = getChild(0); child != null; child = child.nextSibling()) {
if (!child.test(PACKED) || !child.test(VISIBLE)) continue;
if (cols == 1) { child.row = rows; rows += child.rowspan; child.col = 0; continue; }
child.col = (short)(frontier_size <= 0 ? 0 : (frontier[frontier_size-1].col + frontier[frontier_size-1].colspan));
child.row = (short)(frontier_size <= 0 ? 0 : frontier[frontier_size-1].row);
if (child.col + min(cols,child.colspan) > cols) { child.col = 0; child.row++; }
for(int i=0; ichild.col) {
child.col = (short)(frontier[i].col + frontier[i].colspan);
if (child.col + min(cols,child.colspan) > cols) {
child.row = (short)(frontier[i].row + frontier[i].rowspan);
for(i--; i>0; i--) child.row = (short)min(row, frontier[i].row + frontier[i].rowspan);
child.col = (short)0;
}
i = -1;
} else break;
frontier[frontier_size++] = child;
}
for(int i=0; i 1) do {
// FIXME: cache these?
// compute regions
numregions = 0;
for(Box c = firstPackedChild(); c != null; c = c.nextPackedSibling()) {
regions[numregions++] = c.col;
regions[numregions++] = min(cols, c.col+c.colspan);
}
Vec.sortInts(regions, 0, numregions);
int j = 0;
int newnumregions = numregions;
for(int i=1; i= min(child.col+child.colspan,cols)) { minregion = r; break; }
total -= sizes[r];
int child_maxwidth = child.test(HSHRINK)?child.contentwidth:child.maxwidth;
if (sizes[r] <= (float)(targetColumnSize*(regions[r+1]-regions[r])))
if ((child.colspan * targetColumnSize) > (child_maxwidth + (float)0.5))
sizes[r] = (float)Math.min(sizes[r], (regions[r+1]-regions[r])*(child_maxwidth/child.colspan));
if ((child.colspan * targetColumnSize) < (child.contentwidth - (float)0.5))
sizes[r] = (float)Math.max(sizes[r], (regions[r+1]-regions[r])*(child.contentwidth/child.colspan));
total += sizes[r];
}
float save = targetColumnSize;
if (Math.abs(total - target) <= (float)1.0) break;
if (!first) {
if (Math.abs(total - last_total) <= (float)1.0) break;
} else {
last_columnsize = ((total - target) / (float)cols) + targetColumnSize;
}
if (total < target) targetColumnSize += Math.abs((last_columnsize - targetColumnSize) / (float)1.1);
else if (total > target) targetColumnSize -= Math.abs((last_columnsize - targetColumnSize) / (float)1.1);
last_columnsize = save;
last_total = total;
first = false;
}
if (findMinimum) contentwidth = Math.round(total);
else this.targetColumnSize = targetColumnSize;
} while(false);
//#end
}
void place() {
solve(false);
for(Box child = getChild(0); child != null; child = child.nextSibling()) {
if (!child.test(VISIBLE)) continue;
if (!child.test(REPLACE)) continue;
int child_width, child_height, child_x, child_y;
if (!child.test(PACKED)) {
child_width = child.test(HSHRINK) ? child.contentwidth : min(child.maxwidth, width - Math.abs(child.ax));
child_height = child.test(VSHRINK) ? child.contentheight : min(child.maxheight, height - Math.abs(child.ay));
child_width = max(child.minwidth, child_width);
child_height = max(child.minheight, child_height);
int gap_x = width - child_width;
int gap_y = height - child_height;
child_x = child.ax + (child.test(ALIGN_RIGHT) ? gap_x : !child.test(ALIGN_LEFT) ? gap_x / 2 : 0);
child_y = child.ay + (child.test(ALIGN_BOTTOM) ? gap_y : !child.test(ALIGN_TOP) ? gap_y / 2 : 0);
} else {
int diff;
//#repeat col/row colspan/rowspan contentwidth/contentheight width/height colMaxWidth/rowMaxHeight \
// child_x/child_y x/y HSHRINK/VSHRINK maxwidth/maxheight cols/rows minwidth/minheight x_slack/y_slack \
// child_width/child_height ALIGN_RIGHT/ALIGN_BOTTOM ALIGN_LEFT/ALIGN_TOP lp_h/lp \
// numregions/numregions_v regions/regions_v targetColumnSize/targetRowSize sizes/sizes_v
child_x = 0;
if (cols == 1) {
child_width = width;
} else {
child_width = 0;
for(int r=0; r 0)
child.place();
}
// Rendering Pipeline /////////////////////////////////////////////////////////////////////
/** Renders self and children within the specified region. All rendering operations are clipped to xIn,yIn,wIn,hIn */
public void render(int parentx, int parenty, int cx1, int cy1, int cx2, int cy2, PixelBuffer buf, Affine a) {
if (!test(VISIBLE)) return;
int globalx = parentx + (parent == null ? 0 : x);
int globaly = parenty + (parent == null ? 0 : y);
// intersect the x,y,w,h rendering window with ourselves; quit if it's empty
if (test(CLIP)) {
cx1 = max(cx1, globalx);
cy1 = max(cy1, globaly);
cx2 = min(cx2, globalx + width);
cy2 = min(cy2, globaly + height);
if (cx2 <= cx1 || cy2 <= cy1) return;
}
if ((fillcolor & 0xFF000000) != 0x00000000 || parent == null)
buf.fillTrapezoid(cx1, cx2, cy1, cx1, cx2, cy2, (fillcolor & 0xFF000000) == 0 ? 0xffffffff : fillcolor);
if (texture != null && texture.isLoaded)
for(int x = globalx; x < cx2; x += texture.width)
for(int y = globaly; y < cy2; y += texture.height)
buf.drawPicture(texture, x, y, cx1, cy1, cx2, cy2);
if (text != null && !text.equals("") && font != null) {
int gap_x = width - font.textwidth(text);
int gap_y = height - font.textheight(text);
int text_x = globalx + (test(ALIGN_RIGHT) ? gap_x : !test(ALIGN_LEFT) ? gap_x/2 : 0);
int text_y = globaly + (test(ALIGN_BOTTOM) ? gap_y : !test(ALIGN_TOP) ? gap_y/2 : 0);
font.rasterizeGlyphs(text, buf, strokecolor, text_x, text_y, cx1, cy1, cx2, cy2);
}
if (path != null) path.realize(Affine.translate(globalx, globaly)).stroke(buf, 1, strokecolor);
for(Box b = getChild(0); b != null; b = b.nextSibling())
b.render(globalx, globaly, cx1, cy1, cx2, cy2, buf, null);
}
// Methods to implement org.ibex.js.JS //////////////////////////////////////
public JS callMethod(JS method, JS a0, JS a1, JS a2, JS[] rest, int nargs) throws JSExn {
switch (nargs) {
case 1: {
//#jswitch(method)
case "indexof":
Box b = (Box)a0;
if (b.parent != this)
return (redirect == null || redirect == this) ?
N(-1) :
redirect.callMethod(method, a0, a1, a2, rest, nargs);
return N(b.getIndexInParent());
case "distanceto":
Box b = (Box)a0;
JS ret = new JS.O();
ret.put(JS.S("x"), N(b.localToGlobalX(0) - localToGlobalX(0)));
ret.put(JS.S("y"), N(b.localToGlobalY(0) - localToGlobalY(0)));
return ret;
//#end
}
}
return super.callMethod(method, a0, a1, a2, rest, nargs);
}
public JS get(JS name) throws JSExn {
if (JS.isInt(name))
return redirect == null ? null : redirect == this ? getChild(JS.toInt(name)) : redirect.get(name);
//#jswitch(name)
case "surface": return parent == null ? null : parent.getAndTriggerTraps(name);
case "indexof": return METHOD;
case "distanceto": return METHOD;
case "text": return JS.S(text);
case "path": {
if (path != null) return JS.S(path.toString());
if (text == null) return null;
if (font == null) return null;
String ret = "";
for(int i=0; i 0) { CHECKSET_SHORT(colspan); if (parent != null) parent.REPACK(); }
case "rowspan": if (toInt(value) > 0) { CHECKSET_SHORT(rowspan); if (parent != null) parent.REPACK(); }
case "visible": CHECKSET_FLAG(VISIBLE); RECONSTRAIN(); dirty();
case "packed": CHECKSET_FLAG(PACKED); if (parent != null) { parent.REPACK(); } else { REPACK(); }
case "align": clear(ALIGNS); setAlign(value); REPLACE();
case "cursor": setCursor(JS.toString(value));
case "fill": setFill(value);
case "clip": CHECKSET_FLAG(CLIP); if (parent == null) dirty(); else parent.dirty();
case "rows": CHECKSET_SHORT(rows); if (rows==0){set(FIXED, COLS);if(cols==0)cols=1;} else set(FIXED, ROWS); REPACK();
case "cols": CHECKSET_SHORT(cols); if (cols==0){set(FIXED, ROWS);if(rows==0)rows=1;} else set(FIXED, COLS); REPACK();
// FIXME: remove
case "mouse":
int mousex = toInt(((JS)value).get(JS.S("x")));
int mousey = toInt(((JS)value).get(JS.S("y")));
getSurface()._mousex = localToGlobalX(mousex);
getSurface()._mousey = localToGlobalY(mousey);
case "Minimized": if (parent == null && getSurface() != null) getSurface().minimized = toBoolean(value); // FEATURE
case "Maximized": if (parent == null && getSurface() != null) getSurface().maximized = toBoolean(value); // FEATURE
case "Close": if (parent == null && getSurface() != null) getSurface().dispose(true);
case "redirect":
for(Box cur = (Box)value; cur != null || cur == redirect; cur = cur.parent)
if (cur == redirect) { redirect = (Box)value; return; }
JS.error("redirect can only be set to a descendant of its current value");
case "fontsize": font = Font.getFont(font == null ? null : font.stream, toInt(value)); RECONSTRAIN(); dirty();
case "font":
if(!(value instanceof Stream)) throw new JSExn("You can only put streams to the font property");
//FIXME: if (font == value) return; // FIXME: unclone()
font = value == null ? null : Font.getFont((Stream)value, font == null ? 10 : font.pointsize);
RECONSTRAIN();
dirty();
case "x": if (parent==null && Surface.fromBox(this)!=null) {
CHECKSET_INT(x);
} else {
if (test(PACKED) && parent != null) return;
CHECKSET_INT(ax);
REPLACE();
}
case "y": if (parent==null && Surface.fromBox(this)!=null) {
CHECKSET_INT(y);
} else {
if (test(PACKED) && parent != null) return;
CHECKSET_INT(ay);
REPLACE();
}
case "titlebar": if (getSurface()!=null) getSurface().setTitleBarText(toString(value)); super.put(name,value);
// FIXME: icon
case "Press1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Press2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Press3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Release1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Release2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Release3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Click1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Click2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Click3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "DoubleClick1": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "DoubleClick2": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "DoubleClick3": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "KeyPressed": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "KeyReleased": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "Move": if (!test(STOP_UPWARD_PROPAGATION) && parent != null) parent.putAndTriggerTraps(name, value);
case "HScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
parent.putAndTriggerTraps(name, N(JS.toFloat(value) * ((float)parent.fontSize()) / ((float)fontSize())));
case "VScroll": if (!test(STOP_UPWARD_PROPAGATION) && parent != null)
parent.putAndTriggerTraps(name, N(JS.toFloat(value) * ((float)parent.fontSize()) / ((float)fontSize())));
case "_Move": propagateDownward(name, value, false);
case "_Press1": propagateDownward(name, value, false);
case "_Press2": propagateDownward(name, value, false);
case "_Press3": propagateDownward(name, value, false);
case "_Release1": propagateDownward(name, value, false);
case "_Release2": propagateDownward(name, value, false);
case "_Release3": propagateDownward(name, value, false);
case "_Click1": propagateDownward(name, value, false);
case "_Click2": propagateDownward(name, value, false);
case "_Click3": propagateDownward(name, value, false);
case "_DoubleClick1": propagateDownward(name, value, false);
case "_DoubleClick2": propagateDownward(name, value, false);
case "_DoubleClick3": propagateDownward(name, value, false);
case "_KeyPressed": propagateDownward(name, value, false);
case "_KeyReleased": propagateDownward(name, value, false);
case "_HScroll": propagateDownward(name, value, false);
case "_VScroll": propagateDownward(name, value, false);
case "SizeChange": return;
case "ChildChange": return;
case "Enter": return;
case "Leave": return;
default: super.put(name, value);
//#end
}
private String alignToString() {
switch(flags & ALIGNS) {
case (ALIGN_TOP | ALIGN_LEFT): return "topleft";
case (ALIGN_BOTTOM | ALIGN_LEFT): return "bottomleft";
case (ALIGN_TOP | ALIGN_RIGHT): return "topright";
case (ALIGN_BOTTOM | ALIGN_RIGHT): return "bottomright";
case ALIGN_TOP: return "top";
case ALIGN_BOTTOM: return "bottom";
case ALIGN_LEFT: return "left";
case ALIGN_RIGHT: return "right";
case 0: return "center";
default: throw new Error("invalid alignment flags: " + (flags & ALIGNS));
}
}
private void setAlign(JS value) throws JSExn {
clear(ALIGNS);
//#jswitch(value)
case "topleft": set(ALIGN_TOP | ALIGN_LEFT);
case "bottomleft": set(ALIGN_BOTTOM | ALIGN_LEFT);
case "topright": set(ALIGN_TOP | ALIGN_RIGHT);
case "bottomright": set(ALIGN_BOTTOM | ALIGN_RIGHT);
case "top": set(ALIGN_TOP);
case "bottom": set(ALIGN_BOTTOM);
case "left": set(ALIGN_LEFT);
case "right": set(ALIGN_RIGHT);
default: JS.log("invalid alignment \"" + JS.debugToString(value) + "\"");
//#end
}
private void setCursor(String value) throws JSExn {
if (value == null) { clear(CURSOR); boxToCursor.remove(this); return; }
if (value.equals(boxToCursor.get(this))) return;
set(CURSOR);
boxToCursor.put(this, value);
Surface surface = getSurface();
if (surface == null) return;
String tempcursor = surface.cursor;
propagateDownward(null, null, false);
if (surface.cursor != tempcursor) surface.syncCursor();
}
private void setFill(JS value) throws JSExn {
if (value == null) {
if (texture == null && fillcolor == 0) return;
texture = null;
fillcolor = 0;
} else if (JS.isString(value)) {
int newfillcolor = Color.stringToColor(JS.toString(value));
if (newfillcolor == fillcolor) return;
fillcolor = newfillcolor;
texture = null;
} else {
Picture newtex = Picture.load((JS)value, this);
if (texture == newtex) return;
texture = newtex;
fillcolor = 0;
if (texture != null && texture.isLoaded) perform();
}
dirty();
}
/**
* Handles events which propagate down the box tree. If obscured
* is set, then we merely check for Enter/Leave.
*/
private void propagateDownward(JS name_, JS value, boolean obscured) throws JSExn {
String name = JS.toString(name_);
if (getSurface() == null) return;
int x = globalToLocalX(getSurface()._mousex);
int y = globalToLocalY(getSurface()._mousey);
boolean wasinside = test(MOUSEINSIDE);
boolean isinside = test(VISIBLE) && inside(x, y) && !obscured;
if (!wasinside && isinside) {
set(MOUSEINSIDE);
putAndTriggerTrapsAndCatchExceptions(JS.S("Enter"), T);
}
if (isinside && test(CURSOR)) getSurface().cursor = (String)boxToCursor.get(this);
if (wasinside && !isinside) {
clear(MOUSEINSIDE);
putAndTriggerTrapsAndCatchExceptions(JS.S("Leave"), T);
}
boolean found = false;
if (wasinside || isinside)
for(Box child = getChild(treeSize() - 1); child != null; child = child.prevSibling()) {
boolean save_stop = child.test(STOP_UPWARD_PROPAGATION);
JS value2 = value;
if (name.equals("_HScroll") || name.equals("_VScroll"))
value2 = N(JS.toFloat(value) * ((float)child.fontSize()) / (float)fontSize());
if (obscured || !child.inside(x - child.x, y - child.y)) {
child.propagateDownward(name_, value2, true);
} else try {
found = true;
child.clear(STOP_UPWARD_PROPAGATION);
if (name != null) child.putAndTriggerTrapsAndCatchExceptions(name_, value2);
else child.propagateDownward(name_, value2, obscured);
} finally {
if (save_stop) child.set(STOP_UPWARD_PROPAGATION); else child.clear(STOP_UPWARD_PROPAGATION);
}
if (child.inside(x - child.x, y - child.y))
if (name != null && name.equals("_Move")) obscured = true;
else break;
}
if (!obscured && !found)
if ("_Move".equals(name) || name.startsWith("_Release") || wasinside)
if (name != null)
putAndTriggerTrapsAndCatchExceptions(JS.S(name.substring(1)), value);
}
/** figures out what box in this subtree of the Box owns the pixel at x,y relitave to the Surface */
public static Box whoIs(Box cur, int x, int y) {
if (cur.parent != null) throw new Error("whoIs may only be invoked on the root box of a surface");
int globalx = 0;
int globaly = 0;
// WARNING: this method is called from the event-queueing thread -- it may run concurrently with
// ANY part of Ibex, and is UNSYNCHRONIZED for performance reasons. BE CAREFUL HERE.
if (!cur.test(VISIBLE)) return null;
if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
OUTER: while(true) {
for(int i=cur.treeSize() - 1; i>=0; i--) {
Box child = cur.getChild(i);
if (child == null) continue; // since this method is unsynchronized, we have to double-check
globalx += child.x;
globaly += child.y;
if (child.test(VISIBLE) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
globalx -= child.x;
globaly -= child.y;
}
break;
}
return cur;
}
// Trivial Helper Methods (should be inlined) /////////////////////////////////////////
void mark_for_repack() { REPACK(); }
public Enumeration keys() { throw new Error("you cannot apply for..in to a " + this.getClass().getName()); }
public Box getRoot() { return parent == null ? this : parent.getRoot(); }
public Surface getSurface() { return Surface.fromBox(getRoot()); }
Box nextPackedSibling() { Box b = nextSibling(); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
Box firstPackedChild() { Box b = getChild(0); return b == null || (b.test(PACKED | VISIBLE)) ? b : b.nextPackedSibling(); }
public int globalToLocalX(int x) { return parent == null ? x : parent.globalToLocalX(x - this.x); }
public int globalToLocalY(int y) { return parent == null ? y : parent.globalToLocalY(y - this.y); }
public int localToGlobalX(int x) { return parent == null ? x : parent.globalToLocalX(x + this.x); }
public int localToGlobalY(int y) { return parent == null ? y : parent.globalToLocalY(y + this.y); }
static short min(short a, short b) { if (ab) return a; else return b; }
static int max(int a, int b) { if (a>b) return a; else return b; }
static float max(float a, float b) { if (a>b) return a; else return b; }
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; }
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; }
static int bound(int a, int b, int c) { if (c < b) return c; if (a > b) return a; return b; }
final boolean inside(int x, int y) { return test(VISIBLE) && x >= 0 && y >= 0 && x < width && y < height; }
void set(int mask) { flags |= mask; }
void set(int mask, boolean setclear) { if (setclear) set(mask); else clear(mask); }
void clear(int mask) { flags &= ~mask; }
public boolean test(int mask) { return ((flags & mask) == mask); }
// Tree Handling //////////////////////////////////////////////////////////////////////
public final int getIndexInParent() { return parent == null ? 0 : parent.indexNode(this); }
public final Box nextSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) + 1); }
public final Box prevSibling() { return parent == null ? null : parent.getChild(parent.indexNode(this) - 1); }
public final Box getChild(int i) {
if (i < 0) return null;
if (i >= treeSize()) return null;
return (Box)getNode(i);
}
// Tree Manipulation /////////////////////////////////////////////////////////////////////
public void removeSelf() {
if (parent != null) { parent.removeChild(parent.indexNode(this)); return; }
Surface surface = Surface.fromBox(this);
if (surface != null) surface.dispose(true);
}
/** remove the i^th child */
public void removeChild(int i) {
Box b = getChild(i);
b.RECONSTRAIN();
b.dirty();
b.clear(MOUSEINSIDE);
deleteNode(i);
b.parent = null;
REPACK();
putAndTriggerTrapsAndCatchExceptions(JS.S("ChildChange"), b);
}
public void put(int i, JS value) throws JSExn {
if (i < 0) return;
if (value != null && !(value instanceof Box)) {
if (Log.on) JS.warn("attempt to set a numerical property on a box to a non-box");
return;
}
if (redirect == null) {
if (value == null) putAndTriggerTrapsAndCatchExceptions(JS.S("ChildChange"), getChild(i));
else JS.warn("attempt to add/remove children to/from a node with a null redirect");
} else if (redirect != this) {
if (value != null) putAndTriggerTrapsAndCatchExceptions(JS.S("ChildChange"), value);
redirect.put(i, value);
if (value == null) {
Box b = (Box)redirect.get(JS.N(i));
if (b != null) putAndTriggerTrapsAndCatchExceptions(JS.S("ChildChange"), b);
}
} else if (value == null) {
if (i < 0 || i > treeSize()) return;
Box b = getChild(i);
removeChild(i);
putAndTriggerTrapsAndCatchExceptions(JS.S("ChildChange"), b);
} else {
Box b = (Box)value;
// check if box being moved is currently target of a redirect
for(Box cur = b.parent; cur != null; cur = cur.parent)
if (cur.redirect == b) {
if (Log.on) JS.warn("attempt to move a box that is the target of a redirect");
return;
}
// check for recursive ancestor violation
for(Box cur = this; cur != null; cur = cur.parent)
if (cur == b) {
if (Log.on) JS.warn("attempt to make a node a parent of its own ancestor");
if (Log.on) Log.info(this, "box == " + this + " ancestor == " + b);
return;
}
if (b.parent != null) b.parent.removeChild(b.parent.indexNode(b));
insertNode(i, b);
b.parent = this;
// need both of these in case child was already uncalc'ed
b.REPACK();
REPACK();
b.dirty();
putAndTriggerTrapsAndCatchExceptions(JS.S("ChildChange"), b);
}
}
public void putAndTriggerTrapsAndCatchExceptions(JS name, JS val) {
try {
putAndTriggerTraps(name, val);
} catch (JSExn e) {
JS.log("caught js exception while putting to trap \""+ JS.debugToString(name)+"\"");
JS.log(e);
} catch (Exception e) {
JS.log("caught exception while putting to trap \""+ JS.debugToString(name)+"\"");
JS.log(e);
}
}
}