/**
* Calculates and sets the bounds of all the items in the specified container, subject to the
* given constraint. The <code>Graphics2D</code> can be used by some items (particularly items
* containing text) to calculate sizing parameters.
*
* @param container the container whose items are being arranged.
* @param g2 the graphics device.
* @param constraint the size constraint.
* @return The size of the container after arrangement of the contents.
*/
@Override
public Size2D arrange(BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
LengthConstraintType w = constraint.getWidthConstraintType();
LengthConstraintType h = constraint.getHeightConstraintType();
if (w == LengthConstraintType.NONE) {
if (h == LengthConstraintType.NONE) {
return arrangeNN(container, g2);
} else if (h == LengthConstraintType.FIXED) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.RANGE) {
throw new RuntimeException("Not implemented.");
}
} else if (w == LengthConstraintType.FIXED) {
if (h == LengthConstraintType.NONE) {
return arrangeFN(container, g2, constraint);
} else if (h == LengthConstraintType.FIXED) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.RANGE) {
throw new RuntimeException("Not implemented.");
}
} else if (w == LengthConstraintType.RANGE) {
if (h == LengthConstraintType.NONE) {
return arrangeRN(container, g2, constraint);
} else if (h == LengthConstraintType.FIXED) {
return arrangeRF(container, g2, constraint);
} else if (h == LengthConstraintType.RANGE) {
return arrangeRR(container, g2, constraint);
}
}
throw new IllegalArgumentException("Unknown LengthConstraintType.");
}
/**
* Performs an arrangement with a fixed width and a range for the height.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The container size after the arrangement.
*/
protected Size2D arrangeFR(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
Size2D size1 = arrangeFN(container, g2, constraint.getWidth());
if (constraint.getHeightRange().contains(size1.getHeight())) {
return size1;
} else {
double h = constraint.getHeightRange().constrain(size1.getHeight());
RectangleConstraint c2 = constraint.toFixedHeight(h);
return arrange(container, g2, c2);
}
}
/**
* Arranges the block with a range constraint on the width, and no constraint on the height.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The size following the arrangement.
*/
protected Size2D arrangeRN(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
// first arrange without constraints, then see if the width fits
// within the required range...if not, call arrangeFN() at max width
Size2D s1 = arrangeNN(container, g2);
if (constraint.getWidthRange().contains(s1.width)) {
return s1;
} else {
RectangleConstraint c = constraint.toFixedWidth(constraint.getWidthRange().getUpperBound());
return arrangeFN(container, g2, c);
}
}
/**
* Arranges the blocks in the container with a range constraint on the width and a fixed height.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The size following the arrangement.
*/
protected Size2D arrangeRF(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
Size2D s = arrangeNF(container, g2, constraint);
if (constraint.getWidthRange().contains(s.width)) {
return s;
} else {
RectangleConstraint c =
constraint.toFixedWidth(constraint.getWidthRange().constrain(s.getWidth()));
return arrangeFF(container, g2, c);
}
}
/**
* Arranges the blocks in the container with a fixed with and a range constraint on the height.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The size following the arrangement.
*/
protected Size2D arrangeFR(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
Size2D s = arrangeFN(container, g2, constraint);
if (constraint.getHeightRange().contains(s.height)) {
return s;
} else {
RectangleConstraint c =
constraint.toFixedHeight(constraint.getHeightRange().constrain(s.getHeight()));
return arrangeFF(container, g2, c);
}
}
/**
* Arranges the blocks with the overall width and height to fit within specified ranges.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The size after the arrangement.
*/
protected Size2D arrangeRR(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
// first arrange without constraints, and see if this fits within
// the required ranges...
Size2D s1 = arrangeNN(container, g2);
if (constraint.getWidthRange().contains(s1.width)) {
return s1; // TODO: we didn't check the height yet
} else {
RectangleConstraint c = constraint.toFixedWidth(constraint.getWidthRange().getUpperBound());
return arrangeFR(container, g2, c);
}
}
/**
* Arranges the blocks in the container with a fixed width and no height constraint.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The size.
*/
protected Size2D arrangeFN(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
List blocks = container.getBlocks();
Block b = (Block) blocks.get(0);
Size2D s = b.arrange(g2, RectangleConstraint.NONE);
double width = constraint.getWidth();
Rectangle2D bounds = new Rectangle2D.Double((width - s.width) / 2.0, 0.0, s.width, s.height);
b.setBounds(bounds);
return new Size2D((width - s.width) / 2.0, s.height);
}
/**
* Arranges the blocks in the container with a fixed width and no height constraint.
*
* @param container the container.
* @param constraint the constraint.
* @param g2 the graphics device.
* @return The size.
*/
protected Size2D arrangeFN(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
List blocks = container.getBlocks();
double width = constraint.getWidth();
double x = 0.0;
double y = 0.0;
double maxHeight = 0.0;
List itemsInRow = new ArrayList();
for (int i = 0; i < blocks.size(); i++) {
Block block = (Block) blocks.get(i);
Size2D size = block.arrange(g2, RectangleConstraint.NONE);
if (x + size.width <= width) {
itemsInRow.add(block);
block.setBounds(new Rectangle2D.Double(x, y, size.width, size.height));
x = x + size.width + this.horizontalGap;
maxHeight = Math.max(maxHeight, size.height);
} else {
if (itemsInRow.isEmpty()) {
// place in this row (truncated) anyway
block.setBounds(
new Rectangle2D.Double(x, y, Math.min(size.width, width - x), size.height));
x = 0.0;
y = y + size.height + this.verticalGap;
} else {
// start new row
itemsInRow.clear();
x = 0.0;
y = y + maxHeight + this.verticalGap;
maxHeight = size.height;
block.setBounds(new Rectangle2D.Double(x, y, Math.min(size.width, width), size.height));
x = size.width + this.horizontalGap;
itemsInRow.add(block);
}
}
}
return new Size2D(constraint.getWidth(), y + maxHeight);
}
/**
* Returns a constraint for the content of this block that will result in the bounds of the block
* matching the specified constraint.
*
* @param c the outer constraint (<code>null</code> not permitted).
* @return The content constraint.
*/
protected RectangleConstraint toContentConstraint(RectangleConstraint c) {
ParamChecks.nullNotPermitted(c, "c");
if (c.equals(RectangleConstraint.NONE)) {
return c;
}
double w = c.getWidth();
Range wr = c.getWidthRange();
double h = c.getHeight();
Range hr = c.getHeightRange();
double ww = trimToContentWidth(w);
double hh = trimToContentHeight(h);
Range wwr = trimToContentWidth(wr);
Range hhr = trimToContentHeight(hr);
return new RectangleConstraint(
ww, wwr, c.getWidthConstraintType(), hh, hhr, c.getHeightConstraintType());
}
/**
* Arranges the items in the specified container, subject to the given constraint.
*
* @param container the container.
* @param g2 the graphics device.
* @param constraint the constraint.
* @return The block size.
*/
@Override
public Size2D arrange(BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
RectangleConstraint contentConstraint = container.toContentConstraint(constraint);
Size2D contentSize = null;
LengthConstraintType w = contentConstraint.getWidthConstraintType();
LengthConstraintType h = contentConstraint.getHeightConstraintType();
if (w == LengthConstraintType.NONE) {
if (h == LengthConstraintType.NONE) {
contentSize = arrangeNN(container, g2);
} else if (h == LengthConstraintType.FIXED) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.RANGE) {
throw new RuntimeException("Not implemented.");
}
} else if (w == LengthConstraintType.FIXED) {
if (h == LengthConstraintType.NONE) {
contentSize = arrangeFN(container, g2, constraint.getWidth());
} else if (h == LengthConstraintType.FIXED) {
contentSize = arrangeFF(container, g2, constraint);
} else if (h == LengthConstraintType.RANGE) {
contentSize = arrangeFR(container, g2, constraint);
}
} else if (w == LengthConstraintType.RANGE) {
if (h == LengthConstraintType.NONE) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.FIXED) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.RANGE) {
contentSize =
arrangeRR(container, constraint.getWidthRange(), constraint.getHeightRange(), g2);
}
}
return new Size2D(
container.calculateTotalWidth(contentSize.getWidth()),
container.calculateTotalHeight(contentSize.getHeight()));
}
/**
* Arranges the contents of the block, within the given constraints, and returns the block size.
*
* @param g2 the graphics device.
* @param constraint the constraint (<code>null</code> not permitted).
* @return The block size (in Java2D units, never <code>null</code>).
*/
public Size2D arrange(Graphics2D g2, RectangleConstraint constraint) {
Size2D base = new Size2D(getWidth(), getHeight());
return constraint.calculateConstrainedSize(base);
}
/**
* Arranges the items within a container.
*
* @param container the container.
* @param constraint the constraint.
* @param g2 the graphics device.
* @return The container size after the arrangement.
*/
protected Size2D arrangeFF(
BlockContainer container, Graphics2D g2, RectangleConstraint constraint) {
double[] w = new double[5];
double[] h = new double[5];
w[0] = constraint.getWidth();
if (this.topBlock != null) {
RectangleConstraint c1 =
new RectangleConstraint(
w[0],
null,
LengthConstraintType.FIXED,
0.0,
new Range(0.0, constraint.getHeight()),
LengthConstraintType.RANGE);
Size2D size = this.topBlock.arrange(g2, c1);
h[0] = size.height;
}
w[1] = w[0];
if (this.bottomBlock != null) {
RectangleConstraint c2 =
new RectangleConstraint(
w[0],
null,
LengthConstraintType.FIXED,
0.0,
new Range(0.0, constraint.getHeight() - h[0]),
LengthConstraintType.RANGE);
Size2D size = this.bottomBlock.arrange(g2, c2);
h[1] = size.height;
}
h[2] = constraint.getHeight() - h[1] - h[0];
if (this.leftBlock != null) {
RectangleConstraint c3 =
new RectangleConstraint(
0.0,
new Range(0.0, constraint.getWidth()),
LengthConstraintType.RANGE,
h[2],
null,
LengthConstraintType.FIXED);
Size2D size = this.leftBlock.arrange(g2, c3);
w[2] = size.width;
}
h[3] = h[2];
if (this.rightBlock != null) {
RectangleConstraint c4 =
new RectangleConstraint(
0.0,
new Range(0.0, Math.max(constraint.getWidth() - w[2], 0.0)),
LengthConstraintType.RANGE,
h[2],
null,
LengthConstraintType.FIXED);
Size2D size = this.rightBlock.arrange(g2, c4);
w[3] = size.width;
}
h[4] = h[2];
w[4] = constraint.getWidth() - w[3] - w[2];
RectangleConstraint c5 = new RectangleConstraint(w[4], h[4]);
if (this.centerBlock != null) {
this.centerBlock.arrange(g2, c5);
}
if (this.topBlock != null) {
this.topBlock.setBounds(new Rectangle2D.Double(0.0, 0.0, w[0], h[0]));
}
if (this.bottomBlock != null) {
this.bottomBlock.setBounds(new Rectangle2D.Double(0.0, h[0] + h[2], w[1], h[1]));
}
if (this.leftBlock != null) {
this.leftBlock.setBounds(new Rectangle2D.Double(0.0, h[0], w[2], h[2]));
}
if (this.rightBlock != null) {
this.rightBlock.setBounds(new Rectangle2D.Double(w[2] + w[4], h[0], w[3], h[3]));
}
if (this.centerBlock != null) {
this.centerBlock.setBounds(new Rectangle2D.Double(w[2], h[0], w[4], h[4]));
}
return new Size2D(constraint.getWidth(), constraint.getHeight());
}
