/** @see javax.swing.plaf.basic.BasicTextUI#getPreferredSize(javax.swing.JComponent) */
public Dimension getPreferredSize(JComponent c) {
// The following code has been derived from BasicTextUI.
Document doc = ((JTextComponent) c).getDocument();
Insets i = c.getInsets();
Dimension d = c.getSize();
View rootView = getRootView((JTextComponent) c);
if (doc instanceof AbstractDocument) {
((AbstractDocument) doc).readLock();
}
try {
if ((d.width > (i.left + i.right)) && (d.height > (i.top + i.bottom))) {
rootView.setSize(d.width - i.left - i.right, d.height - i.top - i.bottom);
} else if (d.width == 0 && d.height == 0) {
// Probably haven't been layed out yet, force some sort of
// initial sizing.
rootView.setSize(Integer.MAX_VALUE, Integer.MAX_VALUE);
}
d.width =
(int)
Math.min(
(long) rootView.getPreferredSpan(View.X_AXIS) + (long) i.left + (long) i.right,
Integer.MAX_VALUE);
d.height =
(int)
Math.min(
(long) rootView.getPreferredSpan(View.Y_AXIS) + (long) i.top + (long) i.bottom,
Integer.MAX_VALUE);
} finally {
if (doc instanceof AbstractDocument) {
((AbstractDocument) doc).readUnlock();
}
}
// Fix: The preferred width is always two pixels too small on a Mac.
d.width += 2;
// We'd like our heights to be odd by default.
if ((d.height & 1) == 0) {
d.height--;
}
return d;
}
public Dimension getMaximumSize(JComponent c) {
Dimension d = getPreferredSize(c);
View v = (View) c.getClientProperty(BasicHTML.propertyKey);
if (v != null) {
d.width += v.getMaximumSpan(View.X_AXIS) - v.getPreferredSpan(View.X_AXIS);
}
return d;
}
/**
* Returns the preferred span of the View used to display the alt text, or 0 if the view does not
* exist.
*/
private float getPreferredSpanFromAltView(int axis) {
if (getImage() == null) {
View view = getAltView();
if (view != null) {
return view.getPreferredSpan(axis);
}
}
return 0f;
}
/**
* Adjusts the given row if possible to fit within the layout span. By default this will try to
* find the highest break weight possible nearest the end of the row. If a forced break is
* encountered, the break will be positioned there.
*
* @param rowIndex the row to adjust to the current layout span.
* @param desiredSpan the current layout span >= 0
* @param x the location r starts at.
*/
protected void adjustRow(FlowView fv, int rowIndex, int desiredSpan, int x) {
final int flowAxis = fv.getFlowAxis();
View r = fv.getView(rowIndex);
int n = r.getViewCount();
int span = 0;
int bestWeight = BadBreakWeight;
int bestSpan = 0;
int bestIndex = -1;
int bestOffset = 0;
View v;
for (int i = 0; i < n; i++) {
v = r.getView(i);
int spanLeft = desiredSpan - span;
int w = v.getBreakWeight(flowAxis, x + span, spanLeft);
if ((w >= bestWeight) && (w > BadBreakWeight)) {
bestWeight = w;
bestIndex = i;
bestSpan = span;
if (w >= ForcedBreakWeight) {
// it's a forced break, so there is
// no point in searching further.
break;
}
}
span += v.getPreferredSpan(flowAxis);
}
if (bestIndex < 0) {
// there is nothing that can be broken, leave
// it in it's current state.
return;
}
// Break the best candidate view, and patch up the row.
int spanLeft = desiredSpan - bestSpan;
v = r.getView(bestIndex);
v = v.breakView(flowAxis, v.getStartOffset(), x + bestSpan, spanLeft);
View[] va = new View[1];
va[0] = v;
View lv = getLogicalView(fv);
for (int i = bestIndex; i < n; i++) {
View tmpView = r.getView(i);
if (contains(lv, tmpView)) {
tmpView.setParent(lv);
} else if (tmpView.getViewCount() > 0) {
recursiveReparent(tmpView, lv);
}
}
r.replace(bestIndex, n - bestIndex, va);
}
/**
* Determines the preferred span for this view along an axis.
*
* @param axis may be either View.X_AXIS or View.Y_AXIS
* @return the span the view would like to be rendered into. Typically the view is told to
* render into the span that is returned, although there is no guarantee. The parent may
* choose to resize or break the view.
* @see View#getPreferredSpan
*/
public float getPreferredSpan(int axis) {
float maxpref = 0;
float pref = 0;
int n = getViewCount();
for (int i = 0; i < n; i++) {
View v = getView(i);
pref += v.getPreferredSpan(axis);
if (v.getBreakWeight(axis, 0, Short.MAX_VALUE) >= ForcedBreakWeight) {
maxpref = Math.max(maxpref, pref);
pref = 0;
}
}
maxpref = Math.max(maxpref, pref);
return maxpref;
}
/**
* Gets the alignment.
*
* @param axis may be either X_AXIS or Y_AXIS
* @return the alignment
*/
public float getAlignment(int axis) {
switch (axis) {
case View.X_AXIS:
return 0;
case View.Y_AXIS:
if (getViewCount() == 0) {
return 0;
}
float span = getPreferredSpan(View.Y_AXIS);
View v = getView(0);
float above = v.getPreferredSpan(View.Y_AXIS);
float a = (((int) span) != 0) ? (above * v.getAlignment(View.Y_AXIS)) / span : 0;
return a;
default:
throw new IllegalArgumentException("Invalid axis: " + axis);
}
}
/** Returns the baseline for single line text components, like <code>JTextField</code>. */
private static int getSingleLineTextBaseline(JTextComponent textComponent, int h) {
View rootView = textComponent.getUI().getRootView(textComponent);
if (rootView.getViewCount() > 0) {
Insets insets = textComponent.getInsets();
int height = h - insets.top - insets.bottom;
int y = insets.top;
View fieldView = rootView.getView(0);
int vspan = (int) fieldView.getPreferredSpan(View.Y_AXIS);
if (height != vspan) {
int slop = height - vspan;
y += slop / 2;
}
FontMetrics fm = textComponent.getFontMetrics(textComponent.getFont());
y += fm.getAscent();
return y;
}
return -1;
}
/**
* Determines the minimum span for this view along an axis. The is implemented to find the
* minimum unbreakable span.
*
* @param axis may be either View.X_AXIS or View.Y_AXIS
* @return the span the view would like to be rendered into. Typically the view is told to
* render into the span that is returned, although there is no guarantee. The parent may
* choose to resize or break the view.
* @see View#getPreferredSpan
*/
public float getMinimumSpan(int axis) {
float maxmin = 0;
float min = 0;
boolean nowrap = false;
int n = getViewCount();
for (int i = 0; i < n; i++) {
View v = getView(i);
if (v.getBreakWeight(axis, 0, Short.MAX_VALUE) == BadBreakWeight) {
min += v.getPreferredSpan(axis);
nowrap = true;
} else if (nowrap) {
maxmin = Math.max(min, maxmin);
nowrap = false;
min = 0;
}
}
maxmin = Math.max(maxmin, min);
return maxmin;
}
/**
* Determines the preferred span for this view along an axis.
*
* @param axis may be either X_AXIS or Y_AXIS
* @return the span the view would like to be rendered into; typically the view is told to render
* into the span that is returned, although there is no guarantee; the parent may choose to
* resize or break the view
*/
@Override
public float getPreferredSpan(int axis) {
sync();
// If the attributes specified a width/height, always use it!
if (axis == View.X_AXIS && (state & WIDTH_FLAG) == WIDTH_FLAG) {
getPreferredSpanFromAltView(axis);
return width + leftInset + rightInset;
}
if (axis == View.Y_AXIS && (state & HEIGHT_FLAG) == HEIGHT_FLAG) {
getPreferredSpanFromAltView(axis);
return height + topInset + bottomInset;
}
Image image = getImage();
if (image != null) {
switch (axis) {
case View.X_AXIS:
return width + leftInset + rightInset;
case View.Y_AXIS:
return height + topInset + bottomInset;
default:
throw new IllegalArgumentException("Invalid axis: " + axis);
}
} else {
View view = getAltView();
float retValue = 0f;
if (view != null) {
retValue = view.getPreferredSpan(axis);
}
switch (axis) {
case View.X_AXIS:
return retValue + (width + leftInset + rightInset);
case View.Y_AXIS:
return retValue + (height + topInset + bottomInset);
default:
throw new IllegalArgumentException("Invalid axis: " + axis);
}
}
}
protected int getPreferredRowHeight(JTable table, SymbolEditorComponent editorComponent) {
View v =
editorComponent.getTextComponent().getUI().getRootView(editorComponent.getTextComponent());
v.setSize(table.getWidth(), Integer.MAX_VALUE);
return (int) v.getPreferredSpan(View.Y_AXIS);
}
/**
* Creates a row of views that will fit within the layout span of the row. This is called by the
* layout method. This is implemented to fill the row by repeatedly calling the createView
* method until the available span has been exhausted, a forced break was encountered, or the
* createView method returned null. If the remaining span was exhaused, the adjustRow method
* will be called to perform adjustments to the row to try and make it fit into the given span.
*
* @param rowIndex the index of the row to fill in with views. The row is assumed to be empty on
* entry.
* @param pos The current position in the children of this views element from which to start.
* @return the position to start the next row
*/
protected int layoutRow(FlowView fv, int rowIndex, int pos) {
View row = fv.getView(rowIndex);
int x = fv.getFlowStart(rowIndex);
int spanLeft = fv.getFlowSpan(rowIndex);
int end = fv.getEndOffset();
TabExpander te = (fv instanceof TabExpander) ? (TabExpander) fv : null;
// Indentation.
int preX = x;
int availableSpan = spanLeft;
preX = x;
final int flowAxis = fv.getFlowAxis();
boolean forcedBreak = false;
while (pos < end && spanLeft > 0) {
View v = createView(fv, pos, spanLeft, rowIndex);
if (v == null) {
break;
}
int chunkSpan;
if ((flowAxis == X_AXIS) && (v instanceof TabableView)) {
chunkSpan = (int) ((TabableView) v).getTabbedSpan(x, te);
} else {
chunkSpan = (int) v.getPreferredSpan(flowAxis);
}
// If a forced break is necessary, break
if (v.getBreakWeight(flowAxis, pos, spanLeft) >= ForcedBreakWeight) {
int n = row.getViewCount();
if (n > 0) {
/* If this is a forced break and it's not the only view
* the view should be replaced with a call to breakView.
* If it's it only view, it should be used directly. In
* either case no more children should be added beyond this
* view.
*/
v = v.breakView(flowAxis, pos, x, spanLeft);
if (v != null) {
if ((flowAxis == X_AXIS) && (v instanceof TabableView)) {
chunkSpan = (int) ((TabableView) v).getTabbedSpan(x, te);
} else {
chunkSpan = (int) v.getPreferredSpan(flowAxis);
}
} else {
chunkSpan = 0;
}
}
forcedBreak = true;
}
spanLeft -= chunkSpan;
x += chunkSpan;
if (v != null) {
row.append(v);
pos = v.getEndOffset();
}
if (forcedBreak) {
break;
}
}
if (spanLeft < 0) {
// This row is too long and needs to be adjusted.
adjustRow(fv, rowIndex, availableSpan, preX);
} else if (row.getViewCount() == 0) {
// Impossible spec... put in whatever is left.
View v = createView(fv, pos, Integer.MAX_VALUE, rowIndex);
row.append(v);
}
return row.getEndOffset();
}
