// Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
package org.xwt;
// **** This file must be preprocessed before compilation ****
// RULE: coordinates on non-static methods are ALWAYS relative to the
// upper-left hand corner of this
// FEATURE: reflow before allowing js to read from width/height
// FEATURE: fastpath for rows=1/cols=1
// FEATURE: reflow starting with a certain child
// FEATURE: separate mark_for_reflow and mark_for_resize
import java.io.*;
import java.net.*;
import java.util.*;
import org.xwt.js.*;
import org.xwt.util.*;
import org.xwt.translators.*;
/**
*
* Encapsulates the data for a single XWT box as well as all layout
* rendering logic.
*
*
*
* This is the real meat of XWT. Part of its monolithic design is for
* performance reasons: deep inheritance heirarchies are slow, and
* neither javago nor GCJ can inline across class boundaries.
*
*
* The rendering process consists of three phases; each requires
* one DFS pass over the tree
*
* - repacking: children of a box are packed into columns
* and rows according to their colspan/rowspan attributes and
* ordering. Minimum and maximum sizes of columns are computed.
*
*
- resizing: width/height and x/y positions of children
* are assigned. If a PosChange or SizeChange is triggered,
* Surface.abort will be set and the resizing process will
* Surface.abort.
*
*
- repainting: children draw their content onto the
* buffer.
*
*
* The first two passes together are called the reflow phase.
*
* Reflowing is done in a seperate pass since PosChanges and
* SizeChanges trigger an Surface.abort; if rendering were done in the same
* pass, rendering work done prior to the Surface.abort would be wasted.
*
* The two passes are repack and resize. Together they are known as
* reflow. Repacking assigns boxes to the appropriate grid
* coordinates within the parents and computes
* contentwidth/contentheight. Resize computes actual size and
* position.
*
* A note on coordinates: the Box class represents regions
* internally as x,y,w,h tuples, even though the PixelBuffer class
* uses x1,y1,x2,y2 tuples.
*/
public final class Box extends JS.Scope {
public Box() { super(null); }
// Misc instance data ////////////////////////////////////////////////////////////////
static int sizePosChangesSinceLastRender = 0;
// Misc instance data ////////////////////////////////////////////////////////////////
boolean needs_reflow = true;
//#define MARK_FOR_REFLOW_this for(Box b2 = this; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
//#define MARK_FOR_REFLOW_b for(Box b2 = b; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
//#define MARK_FOR_REFLOW_b_parent for(Box b2 = b.parent; b2 != null && !b2.needs_reflow; b2 = b2.parent) b2.needs_reflow = true;
Box redirect = this;
Surface surface = null; // null on all non-root boxen
// Flags ///////////////////////////////////////////////////////////////////////////////
short flags = 0;
static final int MOUSEINSIDE_FLAG = 0x00000001;
static final int INVISIBLE_FLAG = 0x00000002;
static final int NOTPACKED_FLAG = 0x00000004;
static final int HSHRINK_FLAG = 0x00000008;
static final int VSHRINK_FLAG = 0x00000010;
static final int FONT_CHANGED_FLAG = 0x00000040; // set when font changes, cleared during repack
static final int ISROOT_FLAG = 0x00000080;
static final int NOCLIP_FLAG = 0x00000100;
static final int ALIGN_TOP_FLAG = 0x00001000;
static final int ALIGN_BOTTOM_FLAG = 0x00002000;
static final int ALIGN_LEFT_FLAG = 0x00004000;
static final int ALIGN_RIGHT_FLAG = 0x00008000;
static final int ALIGN_FLAGS = 0x0000f000;
// Geometry ////////////////////////////////////////////////////////////////////////////
// xwt can be compiled with 16-bit lengths to save memory on small devices
//#define LENGTH int
//#define MAX_LENGTH Integer.MAX_VALUE
//#define MIN_LENGTH Integer.MIN_VALUE
// always correct (set directly by user)
public LENGTH minwidth = 0;
public LENGTH minheight = 0;
public LENGTH maxwidth = MAX_LENGTH;
public LENGTH maxheight = MAX_LENGTH;
private String text = null;
private Font font = null;
private LENGTH textwidth = 0;
private LENGTH textheight = 0;
// FEATURE: use shorts
private int rows = 1;
private int cols = 0;
private int rowspan = 1;
private int colspan = 1;
// computed during reflow
public LENGTH x = 0;
public LENGTH y = 0;
public LENGTH width = 0;
public LENGTH height = 0;
private int row = 0; // FEATURE use a short
private int col = 0; // FEATURE use a short
private LENGTH contentwidth = 0; // == max(minwidth, textwidth, sum(child.contentwidth))
private LENGTH contentheight = 0;
private LENGTH offset_x = 0;
private LENGTH offset_y = 0;
// Rendering Properties ///////////////////////////////////////////////////////////
private VectorGraphics.VectorPath path = null;
private VectorGraphics.Affine transform = null;
private VectorGraphics.RasterPath rpath = null;
private VectorGraphics.Affine rtransform = null;
//private VectorGraphics.Paint fill = null;
//private VectorGraphics.Paint stroke = null;
int strokewidth = 1;
public Picture image; // will disappear
private int fillcolor = 0x00000000; // will become VectorGraphics.Paint
private int strokecolor = 0xFF000000; // will become VectorGraphics.Paint
private int textcolor = 0xFF000000; // will become VectorGraphics.Paint
private String cursor = null; // the cursor for this box
// Instance Methods /////////////////////////////////////////////////////////////////////
/** Adds the intersection of (x,y,w,h) and the node's current actual geometry to the Surface's dirty list */
public final void dirty() {
if ((flags & NOCLIP_FLAG) != 0 && parent != null) parent.dirty();
else dirty(0, 0, width, height);
}
public final void dirty(int x, int y, int w, int h) {
for(Box cur = this; cur != null; cur = cur.parent) {
if ((flags & NOCLIP_FLAG) == 0) {
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.surface != null) cur.surface.dirty(x, y, w, h);
x += cur.x;
y += cur.y;
}
}
/**
* Given an old and new mouse position, this will update mouseinside and check
* to see if this node requires any Enter, Leave, or Move notifications.
*
* @param forceleave set to true by the box's parent if the mouse is inside an older
* sibling, which is covering up this box.
*/
void Move(int oldmousex, int oldmousey, int mousex, int mousey) { Move(oldmousex, oldmousey, mousex, mousey, false); }
void Move(int oldmousex, int oldmousey, int mousex, int mousey, boolean forceleave) {
boolean wasinside = (flags & MOUSEINSIDE_FLAG) != 0;
boolean isinside = !((flags & INVISIBLE_FLAG) != 0) && inside(mousex, mousey) && !forceleave;
if (isinside) flags |= MOUSEINSIDE_FLAG; else flags &= ~MOUSEINSIDE_FLAG;
if (!wasinside && !isinside) return;
if (!wasinside && isinside && get("Enter", Trap.class) != null) put("Enter", Boolean.TRUE);
else if (wasinside && !isinside && get("Leave", Trap.class) != null) put("Leave", Boolean.TRUE);
else if (wasinside && isinside && (mousex != oldmousex || mousey != oldmousey) && get("Move", Trap.class) != null)
put("Move", Boolean.TRUE);
if (isinside && cursor != null) getRoot().cursor = cursor;
// if the mouse has moved into our padding region, it is considered 'outside' all our children
if (!(mousex >= 0 && mousey >= 0 && mousex < width && mousey < height)) forceleave = true;
for(Box b = getChild(numChildren() - 1); b != null; b = b.prevSibling()) {
b.Move(oldmousex - b.x, oldmousey - b.y, mousex - b.x, mousey - b.y, forceleave);
if (b.inside(mousex - b.x, mousey - b.y)) forceleave = true;
}
}
// Reflow ////////////////////////////////////////////////////////////////////////////////////////
/** only for use on the root box */
void reflow() { reflow(width, height); }
void reflow(int new_width, int new_height) {
repack();
if (Surface.abort) return;
//#repeat width/height new_width/new_height HSHRINK_FLAG/VSHRINK_FLAG contentwidth/contentheight minwidth/minheight maxwidth/maxheight
new_width = bound(max(contentwidth, minwidth),
new_width,
((flags & HSHRINK_FLAG) != 0) ? max(contentwidth, minwidth) : maxwidth);
//#end
resize(x, y, new_width, new_height);
}
/** Checks if the Box's size has changed, dirties it if necessary, and makes sure childrens' sizes are up to date */
void repack() {
if (!needs_reflow) return;
contentwidth = contentheight = 0;
// --- Phase 0 ----------------------------------------------------------------------
// recurse
for(Box child = getChild(0); child != null; child = child.nextSibling()) {
if (((flags & FONT_CHANGED_FLAG) != 0) && child.font == null) {
child.flags |= FONT_CHANGED_FLAG;
child.needs_reflow = true;
}
child.repack();
if (Surface.abort) { MARK_FOR_REFLOW_this; return; }
}
flags &= ~FONT_CHANGED_FLAG;
// --- Phase 1 ----------------------------------------------------------------------
// assign children to their row/column positions (assuming constrained columns)
if ((rows == 0 && cols == 0) || (rows != 0 && cols != 0)) throw new Error("rows == " + rows + " cols == " + cols);
//#repeat x/y y/x width/height col/row row/col cols/rows rows/cols colspan/rowspan rowspan/colspan colWidth/rowHeight numRowsInCol/numColsInRow INNER/INNER2 maxwidth/maxheight minwidth/minheight colMaxWidth/rowMaxHeight OUTER/OUTER2 INNER/INNER2
if (rows == 0 && numChildren() != 0) {
int[] numRowsInCol = new int[cols]; // the number of cells occupied in each column
Box child = getChild(0);
for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
OUTER: for(int row=0; child != null; row++) {
for(int col=0; child != null && col < cols;) {
INNER: while(true) { // scan across the row, looking for an unoccupied gap at least as wide as the child
while(col < cols && numRowsInCol[col] > row) col++;
for(int i=col; i < cols && i < col + min(cols, child.colspan); i++)
if (numRowsInCol[col] > row) { col = i + 1; continue INNER; }
break;
}
if (col + min(cols, child.colspan) > cols) break;
for(int i=col; i < col + min(cols, child.colspan); i++) numRowsInCol[i] += child.rowspan;
child.col = col;
child.row = row;
col += min(cols, child.colspan);
child = child.nextSibling();
for(; child != null && (((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)); child = child.nextSibling());
}
}
}
//#end
// --- Phase 2 ----------------------------------------------------------------------
// compute the min/max sizes of the columns and rows and set our contentwidth
//#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight numCols/numRows textwidth/textheight
if (numChildren() != 0) {
int numCols = cols;
if (numCols == 0)
for(Box child = getChild(0); child != null; child = child.nextSibling())
numCols = max(numCols, child.col + child.colspan);
LENGTH[] colWidth = new LENGTH[numCols];
for(Box child = getChild(0); child != null; child = child.nextSibling())
if (!(((child.flags & NOTPACKED_FLAG) != 0) || ((child.flags & INVISIBLE_FLAG) != 0)))
colWidth[child.col] = max(colWidth[child.col], child.contentwidth / child.colspan);
for(int col=0; col 0)
while(slack > 0) {
// FEATURE: inefficient
int startslack = slack;
int increment = max(1, slack / numCols);
for(int col=0; col < numCols && slack > 0; col++) {
slack += colWidth[col];
colWidth[col] = min(colMaxWidth[col], colWidth[col] + increment);
slack -= colWidth[col];
}
if (slack == startslack) break;
}
//#end
// --- Phase 4 ----------------------------------------------------------------------
// assign children's new sizes and positions and recurse
for(Box child = getChild(0); child != null; child = child.nextSibling()) {
if ((child.flags & INVISIBLE_FLAG) != 0) continue;
int child_x = 0, child_y = 0, child_width = 0, child_height = 0;
if ((child.flags & NOTPACKED_FLAG) != 0) {
child_x = child.x;
child_y = child.y;
child_width = ((child.flags & HSHRINK_FLAG) != 0) ? child.contentwidth : min(child.maxwidth, width - child.x);
child_height = ((child.flags & VSHRINK_FLAG) != 0) ? child.contentheight : min(child.maxheight, height - child.y);
} else {
int diff;
//#repeat x/y y/x width/height col/row cols/rows colspan/rowspan colWidth/rowHeight maxwidth/maxheight minwidth/minheight contentwidth/contentheight colMaxWidth/rowMaxHeight HSHRINK_FLAG/VSHRINK_FLAG marginWidth/marginHeight child_x/child_y child_width/child_height ALIGN_LEFT_FLAG/ALIGN_TOP_FLAG ALIGN_RIGHT_FLAG/ALIGN_BOTTOM_FLAG
child_width = 0; for(int i=child.col; i= numChildren() || i < 0 ? null : getChild(i);
}
/**
* Inserts value as child i; calls remove() if necessary.
* This method handles "reinserting" one of your children properly.
* INVARIANT: after completion, getChild(min(i, numChildren())) == newnode
* WARNING: O(n) runtime, unless i == numChildren()
*/
public Object put(int i, Object value) {
if (i < 0) return null;
Trap t = value == null ? (Trap)get("childremoved", Trap.class) : (Trap)get("childadded", Trap.class);
if (value != null && !(value instanceof Box)) {
if (Log.on) Log.logJS(this, "attempt to set a numerical property on a box to a non-box");
return null;
}
if (redirect == null) {
if (t != null) return t.perform(value);
else if (Log.on) Log.logJS(this, "attempt to add/remove children to/from a node with a null redirect");
} else if (redirect != this) {
Box b = value == null ? (Box)redirect.get(i) : (Box)value;
// FIXME: what if both of them want a tailcall?
redirect.put(i, value);
if (t != null) return t.perform(value);
} else if (value == null) {
if (i >= 0 && i < numChildren()) {
Box b = getChild(i);
b.remove();
if (t != null) return t.perform(b);
}
} else {
Box newnode = (Box)value;
// check if box being moved is currently target of a redirect
for(Box cur = newnode.parent; cur != null; cur = cur.parent)
if (cur.redirect == newnode) {
if (Log.on) Log.logJS(this, "attempt to move a box that is the target of a redirect");
return null;
}
// check for recursive ancestor violation
for(Box cur = this; cur != null; cur = cur.parent)
if (cur == newnode) {
if (Log.on) Log.logJS(this, "attempt to make a node a parent of its own ancestor");
if (Log.on) Log.log(this, "box == " + this + " ancestor == " + newnode);
return null;
}
if (numKids > 15 && children == null) convert_to_array();
newnode.remove();
newnode.parent = this;
if (children == null) {
if (firstKid == null) {
firstKid = newnode;
newnode.prevSibling = newnode;
newnode.nextSibling = newnode;
} else if (i >= numKids) {
newnode.prevSibling = firstKid.prevSibling;
newnode.nextSibling = firstKid;
firstKid.prevSibling.nextSibling = newnode;
firstKid.prevSibling = newnode;
} else {
Box cur = firstKid;
for(int j=0; j= children.size()) {
newnode.indexInParent = children.size();
children.addElement(newnode);
} else {
children.insertElementAt(newnode, i);
for(int j=i; j= parent.children.size() - 1) return null;
return (Box)parent.children.elementAt(indexInParent + 1);
}
}
/** returns our next sibling (parent[ourindex + 1]) */
public final Box prevSibling() {
if (parent == null) return null;
if (parent.children == null) {
if (this == parent.firstKid) return null;
return prevSibling;
} else {
if (indexInParent == 0) return null;
return (Box)parent.children.elementAt(indexInParent - 1);
}
}
/** Returns the parent of this node */
public Box getParent() { return parent; }
/** Returns ith child */
public Box getChild(int i) {
if (children == null) {
if (firstKid == null) return null;
if (i >= numKids) return null;
if (i == numKids - 1) return firstKid.prevSibling;
Box cur = firstKid;
for(int j=0; j= children.size() || i < 0) return null;
return (Box)children.elementAt(i);
}
}
/** Returns the number of children */
public int numChildren() {
if (children == null) {
if (firstKid == null) return 0;
int i=1;
for(Box cur = firstKid.nextSibling; cur != firstKid; i++) cur = cur.nextSibling;
return i;
} else {
return children.size();
}
}
/** Returns our index in our parent */
public int getIndexInParent() {
if (parent == null) return 0;
if (parent.children == null) {
int i = 0;
for(Box cur = this; cur != parent.firstKid; i++) cur = cur.prevSibling;
return i;
} else {
return indexInParent;
}
}
/** returns the root of the surface that this box belongs to */
public final Box getRoot() {
if (parent == null && surface != null) return this;
if (parent == null) return null;
return parent.getRoot();
}
public void recompute_font() {
if (text == null) { textwidth = textheight = 0; return; }
if (font == null) { /* FIXME */ return; }
long widthheight = font.rasterizeGlyphs(text, null, textcolor, 0, 0, 0, 0, 0, 0,
new Scheduler.Task() { public void perform() {
Box b = Box.this;
recompute_font();
MARK_FOR_REFLOW_b;
b.dirty();
} });
textwidth = (int)((widthheight & 0xffff0000) >> 16);
textheight = (int)(widthheight & 0x0000ffff);
MARK_FOR_REFLOW_this;
}
// Trivial Helper Method s(should be inlined) /////////////////////////////////////////
static final int min(int a, int b) { if (ab) return a; else return b; }
static final float max(float a, float b) { if (a>b) return a; else return b; }
static final 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 final 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 final 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 (!((flags & INVISIBLE_FLAG) != 0) && x >= 0 && y >= 0 && x < width && y < height); }
/** 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 XWT, and
// is UNSYNCHRONIZED for performance reasons. BE CAREFUL
// HERE.
if ((cur.flags & INVISIBLE_FLAG) != 0) return null;
if (!cur.inside(x - globalx, y - globaly)) return cur.parent == null ? cur : null;
OUTER: while(true) {
for(int i=cur.numChildren() - 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.flags & INVISIBLE_FLAG) != 0) && child.inside(x - globalx, y - globaly)) { cur = child; continue OUTER; }
globalx -= child.x;
globaly -= child.y;
}
break;
}
return cur;
}
/**
* A helper class for properties of Box which require special
* handling.
*
* To avoid excessive use of String.equals(), the Box.get() and
* Box.put() methods employ a Hash keyed on property names that
* require special handling. The value stored in the Hash is an
* instance of an anonymous subclass of SpecialBoxProperty, which knows
* how to handle get()s and put()s for that property name. There
* should be one anonymous subclass of SpecialBoxProperty for each
* specially-handled property on Box.
*/
static class SpecialBoxProperty {
SpecialBoxProperty() { }
/** stores instances of SpecialBoxProperty; keyed on property name */
static Hash specialBoxProperties = new Hash(200, 3);
/** this method defines the behavior when the property is get()ed from b */
Object get(Box b) { return null; }
/** this method defines the behavior when the property is put() to b */
void put(Box b, Object value) { }
/** this method defines the behavior when the property is put() to b, allows a single SpecialBoxProperty to serve multiple properties */
void put(String name, Box b, Object value) { put(b, value); }
static {
specialBoxProperties.put("fill", new ColorBoxProperty() {
public void put(final Box b, final Object value) {
if (value == null || !(value instanceof Res)) super.put(b, value);
else {
Callback callback = new Callback() { public Object call(Object pic) {
b.image = (Picture)pic;
b.minwidth = b.image.getWidth();
b.minheight = b.image.getHeight();
MARK_FOR_REFLOW_b;
b.dirty();
return null;
} };
Picture pic = Picture.fromRes((Res)value, callback);
if (pic != null) callback.call(pic);
}
}
public int getColor(Box b) { return b.fillcolor; }
public void putColor(Box b, int argb) { b.fillcolor = argb; }
});
specialBoxProperties.put("textcolor", new ColorBoxProperty() {
public int getColor(Box b) { return b.textcolor; }
public void putColor(Box b, int argb) { b.textcolor = argb; }
});
specialBoxProperties.put("strokecolor", new ColorBoxProperty() {
public int getColor(Box b) { return b.strokecolor; }
public void putColor(Box b, int argb) { b.strokecolor = argb; }
});
specialBoxProperties.put("text", new SpecialBoxProperty() {
public Object get(Box b) { return b.text; }
public void put(Box b, Object value) {
String t = value == null ? "null" : value.toString();
if (t.equals(b.text)) return;
b.text = t;
b.dirty();
b.recompute_font();
} });
specialBoxProperties.put("path", new SpecialBoxProperty() {
public Object get(Box b) { throw new JS.Exn("cannot read from the path property"); }
public void put(Box b, Object value) {
String t = value == null ? "null" : value.toString();
b.path = value == null ? null : VectorGraphics.parseVectorPath(value.toString());
MARK_FOR_REFLOW_b;
b.dirty();
} });
specialBoxProperties.put("transform", new SpecialBoxProperty() {
public void put(Box b, Object value) {
String t = value.toString().trim();
b.transform = VectorGraphics.Affine.identity();
while (t.length() > 0) {
if (t.startsWith("skewX(")) {
// FIXME
} else if (t.startsWith("shear(")) {
// FIXME: nonstandard; remove this
b.transform.multiply(VectorGraphics.Affine.shear(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
} else if (t.startsWith("skewY(")) {
// FIXME
} else if (t.startsWith("rotate(")) {
String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
if (sub.indexOf(',') != -1) {
float angle = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
sub = sub.substring(sub.indexOf(',') + 1);
float cx = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
sub = sub.substring(sub.indexOf(',') + 1);
float cy = Float.parseFloat(sub);
b.transform.multiply(VectorGraphics.Affine.translate(cx, cy));
b.transform.multiply(VectorGraphics.Affine.rotate(angle));
b.transform.multiply(VectorGraphics.Affine.translate(-1 * cx, -1 * cy));
} else {
b.transform.multiply(VectorGraphics.Affine.rotate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
}
} else if (t.startsWith("translate(")) {
String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
if (sub.indexOf(',') > -1) {
b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
} else {
b.transform.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))), 0));
}
} else if (t.startsWith("flip(")) {
String which = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
b.transform.multiply(VectorGraphics.Affine.flip(which.equals("horizontal"), which.equals("vertical")));
} else if (t.startsWith("scale(")) {
String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
if (sub.indexOf(',') > -1) {
b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
} else {
b.transform.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(',')))));
}
} else if (t.startsWith("matrix(")) {
// FIXME: is this mapped right?
float d[] = new float[6];
StringTokenizer st = new StringTokenizer(t, ",", false);
for(int i=0; i<6; i++)
d[i] = Float.parseFloat(st.nextToken());
b.transform.multiply(new VectorGraphics.Affine(d[0], d[1], d[2], d[3], d[4], d[5]));
}
t = t.substring(t.indexOf(')') + 1).trim();
}
MARK_FOR_REFLOW_b;
b.dirty();
}
public Object get(Box b) { return b.transform.toString(); }
});
specialBoxProperties.put("font", new SpecialBoxProperty() {
public Object get(Box b) { return b.font; }
public void put(Box b, Object value) {
// FIXME: translate value into a resource if it is a string
b.font = value == null ? null :
Font.getFont((Res)value, b.font == null ? 10 : b.font.pointsize); // FIXME
MARK_FOR_REFLOW_b;
b.flags |= FONT_CHANGED_FLAG;
b.dirty();
b.recompute_font();
} });
specialBoxProperties.put("fontsize", new SpecialBoxProperty() {
public Object get(Box b) { return b.font; }
public void put(Box b, Object value) {
if (b.font != null && b.font.pointsize == stoi(value)) return;
b.font = value == null ? null :
Font.getFont(b.font == null ? null : b.font.res, stoi(value)); // FIXME
MARK_FOR_REFLOW_b;
b.flags |= FONT_CHANGED_FLAG;
b.dirty();
b.recompute_font();
} });
specialBoxProperties.put("strokewidth", new SpecialBoxProperty() {
public Object get(Box b) { return new Integer(b.strokewidth); }
public void put(Box b, Object value) {
if (b.strokewidth == stoi(value)) return;
b.strokewidth = stoi(value);
b.dirty();
} });
specialBoxProperties.put("align", new SpecialBoxProperty() {
public Object get(Box b) {
switch(b.flags & ALIGN_FLAGS) {
case (ALIGN_TOP_FLAG | ALIGN_LEFT_FLAG): return "topleft";
case (ALIGN_BOTTOM_FLAG | ALIGN_LEFT_FLAG): return "bottomleft";
case (ALIGN_TOP_FLAG | ALIGN_RIGHT_FLAG): return "topright";
case (ALIGN_BOTTOM_FLAG | ALIGN_RIGHT_FLAG): return "bottomright";
case ALIGN_TOP_FLAG: return "top";
case ALIGN_BOTTOM_FLAG: return "bottom";
case ALIGN_LEFT_FLAG: return "left";
case ALIGN_RIGHT_FLAG: return "right";
case 0: return "center";
default: throw new Error("invalid alignment flags: " + (b.flags & ALIGN_FLAGS));
}
}
public void put(Box b, Object value) {
b.flags &= ~ALIGN_FLAGS;
if (value == null || value.equals("center")) { b.flags &= ALIGN_FLAGS; }
else if (value.equals("topleft")) { b.flags |= ALIGN_TOP_FLAG | ALIGN_LEFT_FLAG; }
else if (value.equals("bottomleft")) { b.flags |= ALIGN_BOTTOM_FLAG | ALIGN_LEFT_FLAG; }
else if (value.equals("topright")) { b.flags |= ALIGN_TOP_FLAG | ALIGN_RIGHT_FLAG; }
else if (value.equals("bottomright")) { b.flags |= ALIGN_BOTTOM_FLAG | ALIGN_RIGHT_FLAG; }
else if (value.equals("top")) { b.flags |= ALIGN_TOP_FLAG; }
else if (value.equals("bottom")) { b.flags |= ALIGN_BOTTOM_FLAG; }
else if (value.equals("left")) { b.flags |= ALIGN_LEFT_FLAG; }
else if (value.equals("right")) { b.flags |= ALIGN_RIGHT_FLAG; }
else Log.logJS("invalid alignment specifier \"" + value + "\"");
MARK_FOR_REFLOW_b;
b.dirty();
} });
specialBoxProperties.put("thisbox", new SpecialBoxProperty() {
public Object get(Box b) { return b; }
public void put(Box b, Object value) {
if (value == null) b.remove();
else if (Log.on) Log.log(this, "put invalid value to 'thisbox' property: " + value);
}
});
specialBoxProperties.put("orient", new SpecialBoxProperty() {
public Object get(Box b) {
Log.log(this, "warning: the orient property is deprecated");
if (b.redirect == null) return "horizontal";
else if (b.redirect != b) return get(b.redirect);
else if (b.cols == 1) return "vertical";
else if (b.rows == 1) return "horizontal";
else return "grid";
}
public void put(Box b, Object value) {
Log.log(this, "warning: the orient property is deprecated");
if (value == null) return;
if (b.redirect == null) return;
if (b.redirect != b) { put(b.redirect, value); return; }
if (value.equals("vertical")) {
if (b.rows == 0) return;
b.rows = 0; b.cols = 1;
} else if (value.equals("horizontal")) {
if (b.cols == 0) return;
b.cols = 0; b.rows = 1;
} else if (Log.on)
Log.log(this, "invalid value put to orient property: " + value);
MARK_FOR_REFLOW_b;
} });
specialBoxProperties.put("shrink", new SpecialBoxProperty() {
public Object get(Box b) { return (((b.flags & HSHRINK_FLAG) != 0) || ((b.flags & VSHRINK_FLAG) != 0)) ? Boolean.TRUE : Boolean.FALSE; }
public void put(Box b, Object value) { b.put("hshrink", value); b.put("vshrink", value); }
});
//#repeat hshrink/vshrink HSHRINK_FLAG/VSHRINK_FLAG
specialBoxProperties.put("hshrink", new SpecialBoxProperty() {
public Object get(Box b) { return new Boolean((b.flags & HSHRINK_FLAG) != 0); }
public void put(Box b, Object value) {
boolean newshrink = stob(value);
if (((b.flags & HSHRINK_FLAG) != 0) == newshrink) return;
if (newshrink) b.flags |= HSHRINK_FLAG; else b.flags &= ~HSHRINK_FLAG;
MARK_FOR_REFLOW_b;
}
});
//#end
//#repeat x/y
specialBoxProperties.put("x", new SpecialBoxProperty() {
public Object get(Box b) {
if (b.surface == null) return new Integer(0);
if ((b.flags & INVISIBLE_FLAG) != 0) return new Integer(0);
return new Integer(b.x);
}
public void put(Box b, Object value) {
if (!((b.flags & NOTPACKED_FLAG) != 0) && (b.parent != null || b.surface == null)) return;
int x = stoi(value);
if (x == b.x) return;
b.dirty();
b.x = x;
if (b.parent == null && b.surface != null) b.surface.setLocation();
MARK_FOR_REFLOW_b;
b.dirty();
}
});
//#end
//#repeat width/height height/width minwidth/minheight maxwidth/maxheight true/false
specialBoxProperties.put("width", new SpecialBoxProperty() {
public Object get(Box b) { return new Integer(b.width); }
public void put(Box b, Object value) {
int newval = stoi(value);
if (b.parent == null && b.surface != null) {
// hack to circumvent #repeat
int other = b.height;
if (true) b.surface.setSize(newval, other);
else b.surface.setSize(other, newval);
MARK_FOR_REFLOW_b;
} else {
if (b.minwidth == newval && b.maxwidth == newval) return;
b.minwidth = b.maxwidth = newval;
MARK_FOR_REFLOW_b;
}
} });
//#end
//#repeat cols/rows rows/cols
specialBoxProperties.put("cols", new SpecialBoxProperty() {
public Object get(Box b) { return new Double(b.cols); }
public void put(Box b, Object value) {
if (b.cols == stoi(value)) return;
b.cols = stoi(value);
if (b.cols == 0 && b.rows == 0) b.rows = 1;
if (b.cols != 0 && b.rows != 0) b.rows = 0;
MARK_FOR_REFLOW_b;
} });
//#end
//#repeat colspan/rowspan
specialBoxProperties.put("colspan", new SpecialBoxProperty() {
public Object get(Box b) { return new Double(b.colspan); }
public void put(Box b, Object value) {
if (b.colspan == stoi(value)) return;
b.colspan = stoi(value);
MARK_FOR_REFLOW_b;
}
});
//#end
specialBoxProperties.put("noclip", new SpecialBoxProperty() {
public Object get(Box b) { return ((b.flags & NOCLIP_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
public void put(Box b, Object value) {
if (((b.flags & NOCLIP_FLAG) != 0) == stob(value)) return;
if (stob(value)) b.flags |= NOCLIP_FLAG; else b.flags &= ~NOCLIP_FLAG;
MARK_FOR_REFLOW_b;
b.dirty();
} });
specialBoxProperties.put("visible", new SpecialBoxProperty() {
public Object get(Box b) {
for (Box cur = b; cur != null; cur = cur.parent) {
if ((cur.flags & INVISIBLE_FLAG) != 0) return Boolean.FALSE; }
return Boolean.TRUE;
}
public void put(Box b, Object value) {
if (!stob(value) == ((b.flags & INVISIBLE_FLAG) != 0)) return;
if (!stob(value)) b.flags |= INVISIBLE_FLAG; else b.flags &= ~INVISIBLE_FLAG;
if (b.parent == null) {
if (b.surface != null) b.surface.setInvisible((b.flags & INVISIBLE_FLAG) != 0);
} else {
b.dirty();
MARK_FOR_REFLOW_b_parent;
b.parent.dirty(b.x, b.y, b.width, b.height);
}
}});
specialBoxProperties.put("packed", new SpecialBoxProperty() {
public Object get(Box b) { return ((b.flags & NOTPACKED_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
public void put(Box b, Object value) {
if (stob(value) == ((b.flags & NOTPACKED_FLAG) == 0)) return;
if (!stob(value)) b.flags |= NOTPACKED_FLAG; else b.flags &= ~NOTPACKED_FLAG;
if ((b.flags & NOTPACKED_FLAG) != 0) { b.x = 0; b.y = 0; }
if (b.parent != null) MARK_FOR_REFLOW_b_parent;
} });
//#repeat globalx/globaly x/y
specialBoxProperties.put("globalx", new SpecialBoxProperty() {
public Object get(Box b) { return new Integer(b.parent == null || b.surface == null ? 0 : b.x); }
public void put(Box b, Object value) {
if (b.surface == null || b.parent == null) return;
b.put("x", new Integer(stoi(value) - stoi(get(b.parent))));
MARK_FOR_REFLOW_b;
}
});
//#end
specialBoxProperties.put("cursor", new SpecialBoxProperty() {
public Object get(Box b) { return b.cursor; }
public void put(Box b, Object value) {
b.cursor = (String)value;
if (b.surface == null) return;
// see if we need to update the surface cursor
Surface surface = b.getRoot().surface;
String tempcursor = surface.cursor;
b.Move(surface.mousex, surface.mousey, surface.mousex, surface.mousey);
if (surface.cursor != tempcursor) surface.syncCursor();
}
});
//#repeat mousex/mousey x/y
specialBoxProperties.put("mousex", new SpecialBoxProperty() {
public Object get(Box b) {
Surface surface = b.getRoot().surface;
if (surface == null) return new Integer(0);
int mousex = surface.mousex;
for(Box cur = b; cur != null && cur.parent != null; cur = cur.parent) mousex -= cur.x;
return new Integer(mousex);
}
});
//#end
specialBoxProperties.put("mouseinside", new SpecialBoxProperty() {
public Object get(Box b) {
return ((b.flags & MOUSEINSIDE_FLAG) != 0) ? Boolean.TRUE : Boolean.FALSE; }
});
specialBoxProperties.put("numchildren", new SpecialBoxProperty() {
public Object get(Box b) {
if (b.redirect == null) return new Integer(0);
if (b.redirect != b) return get(b.redirect);
return new Integer(b.numChildren());
} });
SpecialBoxProperty mouseEventHandler = new SpecialBoxProperty() {
public void put(String name, Box b, Object value) {
Surface surface = b.getRoot().surface;
if (surface == null) return;
int mousex = surface.mousex;
int mousey = surface.mousey;
for(Box c = b.parent; c != null && c.parent != null; c = c.parent) {
mousex -= c.x;
mousey -= c.y;
}
for(Box c = b.prevSibling(); c != null; c = c.prevSibling()) {
if (c.inside(mousex - c.x, mousey - c.y)) {
c.put(name, value);
return;
}
}
if (b.parent != null) b.parent.put(name, value);
}};
specialBoxProperties.put("Press1", mouseEventHandler);
specialBoxProperties.put("Press2", mouseEventHandler);
specialBoxProperties.put("Press3", mouseEventHandler);
specialBoxProperties.put("Release1", mouseEventHandler);
specialBoxProperties.put("Release2", mouseEventHandler);
specialBoxProperties.put("Release3", mouseEventHandler);
specialBoxProperties.put("Click1", mouseEventHandler);
specialBoxProperties.put("Click2", mouseEventHandler);
specialBoxProperties.put("Click3", mouseEventHandler);
specialBoxProperties.put("DoubleClick1", mouseEventHandler);
specialBoxProperties.put("DoubleClick2", mouseEventHandler);
specialBoxProperties.put("DoubleClick3", mouseEventHandler);
specialBoxProperties.put("root", new SpecialBoxProperty() {
public void put(Box b, Object value) {
if (stob(value)) b.flags |= ISROOT_FLAG;
else b.flags &= ~ISROOT_FLAG;
}
public Object get(Box b) {
if (b.parent == null || ((b.flags & ISROOT_FLAG) != 0)) return b;
else return get(b.parent);
} });
specialBoxProperties.put("Minimized", new SpecialBoxProperty() {
public Object get(Box b) {
if (b.parent == null && b.surface != null) return b.surface.minimized ? Boolean.TRUE : Boolean.FALSE;
else return null;
}
public void put(Box b, Object value) {
if (b.surface == null) return;
boolean val = stob(value);
if (b.parent == null && b.surface.minimized != val) b.surface.setMinimized(val);
}
});
specialBoxProperties.put("Maximized", new SpecialBoxProperty() {
public Object get(Box b) {
if (b.parent == null && b.surface != null) return b.surface.maximized ? Boolean.TRUE : Boolean.FALSE;
else return null;
}
public void put(Box b, Object value) {
if (b.surface == null) return;
boolean val = stob(value);
if (b.parent == null && b.surface.maximized != val) b.surface.setMaximized(val);
}
});
specialBoxProperties.put("toback", new SpecialBoxProperty() {
public void put(Box b, Object value) {
if (b.parent == null && stob(value) && b.surface != null) b.surface.toBack();
}
});
specialBoxProperties.put("tofront", new SpecialBoxProperty() {
public void put(Box b, Object value) {
if (b.parent == null && stob(value) && b.surface != null) b.surface.toFront();
}
});
specialBoxProperties.put("Close", new SpecialBoxProperty() {
public void put(Box b, Object value) {
if (b.parent == null && b.surface != null) b.surface.dispose(true);
}
});
// these are all do-nothings; just to prevent space from getting taken up in the params Hash.
specialBoxProperties.put("KeyPressed", new SpecialBoxProperty());
specialBoxProperties.put("KeyReleased", new SpecialBoxProperty());
specialBoxProperties.put("PosChange", new SpecialBoxProperty());
specialBoxProperties.put("SizeChange", new SpecialBoxProperty());
//#repeat minwidth/minheight maxwidth/maxheight
specialBoxProperties.put("minwidth", new SpecialBoxProperty() {
public Object get(Box b) { return new Integer(b.minwidth); }
public void put(Box b, Object value) {
if (stoi(value) == b.minwidth) return;
b.minwidth = stoi(value);
MARK_FOR_REFLOW_b;
}
});
specialBoxProperties.put("maxwidth", new SpecialBoxProperty() {
public Object get(Box b) { return new Integer(b.maxwidth); }
public void put(Box b, Object value) {
if (stoi(value) == b.maxwidth) return;
b.maxwidth = stoi(value);
MARK_FOR_REFLOW_b;
}
});
//#end
specialBoxProperties.put("redirect", new SpecialBoxProperty() {
public void put(Box b, Object value) {
if (b.redirect != b) Log.log(this, "cannot change the redirect of a box once it is set");
else if (value == null) b.redirect = null;
else {
Box b2 = (Box)value;
while(b2 != b && b2 != null) b2 = b2.parent;
if (b2 == null) Log.log(this, "a box's redirect must be one of its descendants");
b.redirect = (Box)value;
}
}
public Object get(Box b) {
if (b.redirect == null) return null;
if (b.redirect == b) return Boolean.TRUE;
return get(b.redirect);
}
});
// FEATURE: this still isn't totally harmonious; when you createSurface, these aren't checked
specialBoxProperties.put("titlebar", new SpecialBoxProperty() {
public void put(Box b, Object value) {
if (b.surface != null) b.surface.setTitleBarText(value.toString());
b.put_("titlebar", value);
}
public Object get(Box b) { return b.get_("titlebar"); }
});
specialBoxProperties.put("icon", new SpecialBoxProperty() {
// FIXME
/*
public void put(Box b, Object value) {
b.put_("icon", value);
if (b.surface == null) return;
Picture pic = ImageDecoder.getPicture(value.toString());
if (pic != null) b.surface.setIcon(pic);
else if (Log.on) Log.log(this, "unable to load icon " + value);
}
public Object get(Box b) { return b.get_("icon"); }
*/
});
}
private static abstract class ColorBoxProperty extends SpecialBoxProperty {
public abstract int getColor(Box b);
public abstract void putColor(Box b, int argb);
public Object get(Box b) {
if ((getColor(b) & 0xFF000000) == 0) return null;
String red = Integer.toHexString((getColor(b) & 0x00FF0000) >> 16);
String green = Integer.toHexString((getColor(b) & 0x0000FF00) >> 8);
String blue = Integer.toHexString(getColor(b) & 0x000000FF);
if (red.length() < 2) red = "0" + red;
if (blue.length() < 2) blue = "0" + blue;
if (green.length() < 2) green = "0" + green;
return "#" + red + green + blue;
}
public void put(Box b, Object value) {
int newcolor = getColor(b);
String s = value == null ? null : value.toString();
if (value == null) newcolor = 0x00000000;
else if (s.length() > 0 && s.charAt(0) == '#')
try {
newcolor = 0xFF000000 |
(Integer.parseInt(s.substring(1, 3), 16) << 16) |
(Integer.parseInt(s.substring(3, 5), 16) << 8) |
Integer.parseInt(s.substring(5, 7), 16);
} catch (NumberFormatException e) {
Log.log(this, "invalid color " + s);
return;
}
else if (org.xwt.translators.SVG.colors.get(s) != null)
newcolor = 0xFF000000 | ((Integer)org.xwt.translators.SVG.colors.get(s)).intValue();
if (newcolor == getColor(b)) return;
putColor(b, newcolor);
b.dirty();
}
}
}
/** helper that converts a String to a boolean according to JavaScript coercion rules */
public static boolean stob(Object o) {
if (o == null) return false;
return Boolean.TRUE.equals(o) || "true".equals(o);
}
/** helper that converts a String to an int according to JavaScript coercion rules */
public static int stoi(Object o) {
if (o == null) return 0;
if (o instanceof Integer) return ((Integer)o).intValue();
String s;
if (!(o instanceof String)) s = o.toString();
else s = (String)o;
try { return Integer.parseInt(s.indexOf('.') == -1 ? s : s.substring(0, s.indexOf('.'))); }
catch (NumberFormatException e) { return 0; }
}
}