下面列出了java.awt.FontMetrics#getLeading ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Calculates the largest size of the given font for which the given string
* will fit into the given size.
* <p/>
* @param g the graphics to use in the current context.
* @param font the original font to base the returned font on.
* @param string the string to fit.
* @param width the maximum width available.
* @param height the maximum height available.
* @return the maximum font size that fits into the given area.
*/
public static int getMaxFittingFontSize(Graphics g, Font font, String string, int width, int height) {
int minSize = 0;
int maxSize = 288;
int curSize = font.getSize();
while (maxSize - minSize > 2) {
FontMetrics fm = g.getFontMetrics(new Font(font.getName(), font.getStyle(), curSize));
int fontWidth = fm.stringWidth(string);
int fontHeight = fm.getLeading() + fm.getMaxAscent() + fm.getMaxDescent();
if ((fontWidth > width) || (fontHeight > height)) {
maxSize = curSize;
curSize = (maxSize + minSize) / 2;
} else {
minSize = curSize;
curSize = (minSize + maxSize) / 2;
}
}
return curSize;
}
/**
* Initialise the font to be used based on configuration
*
* @param baseFont The AWT font to render
* @param size The point size of the font to generated
* @param bold True if the font should be rendered in bold typeface
* @param italic True if the font should be rendered in bold typeface
*/
private void initializeFont(Font baseFont, int size, boolean bold, boolean italic) {
Map attributes = baseFont.getAttributes();
attributes.put(TextAttribute.SIZE, new Float(size));
attributes.put(TextAttribute.WEIGHT, bold ? TextAttribute.WEIGHT_BOLD : TextAttribute.WEIGHT_REGULAR);
attributes.put(TextAttribute.POSTURE, italic ? TextAttribute.POSTURE_OBLIQUE : TextAttribute.POSTURE_REGULAR);
try {
attributes.put(TextAttribute.class.getDeclaredField("KERNING").get(null), TextAttribute.class.getDeclaredField(
"KERNING_ON").get(null));
} catch (Exception ignored) {
}
font = baseFont.deriveFont(attributes);
FontMetrics metrics = GlyphPage.getScratchGraphics().getFontMetrics(font);
ascent = metrics.getAscent();
descent = metrics.getDescent();
leading = metrics.getLeading();
// Determine width of space glyph (getGlyphPixelBounds gives a width of zero).
char[] chars = " ".toCharArray();
GlyphVector vector = font.layoutGlyphVector(GlyphPage.renderContext, chars, 0, chars.length, Font.LAYOUT_LEFT_TO_RIGHT);
spaceWidth = vector.getGlyphLogicalBounds(0).getBounds().width;
}
/**
* Initialise the font to be used based on configuration
*
* @param baseFont The AWT font to render
* @param size The point size of the font to generated
* @param bold True if the font should be rendered in bold typeface
* @param italic True if the font should be rendered in bold typeface
*/
private void initializeFont(Font baseFont, int size, boolean bold, boolean italic) {
Map attributes = baseFont.getAttributes();
attributes.put(TextAttribute.SIZE, new Float(size));
attributes.put(TextAttribute.WEIGHT, bold ? TextAttribute.WEIGHT_BOLD : TextAttribute.WEIGHT_REGULAR);
attributes.put(TextAttribute.POSTURE, italic ? TextAttribute.POSTURE_OBLIQUE : TextAttribute.POSTURE_REGULAR);
try {
attributes.put(TextAttribute.class.getDeclaredField("KERNING").get(null), TextAttribute.class.getDeclaredField(
"KERNING_ON").get(null));
} catch (Exception ignored) {
}
font = baseFont.deriveFont(attributes);
FontMetrics metrics = GlyphPage.getScratchGraphics().getFontMetrics(font);
ascent = metrics.getAscent();
descent = metrics.getDescent();
leading = metrics.getLeading();
// Determine width of space glyph (getGlyphPixelBounds gives a width of zero).
char[] chars = " ".toCharArray();
GlyphVector vector = font.layoutGlyphVector(GlyphPage.renderContext, chars, 0, chars.length, Font.LAYOUT_LEFT_TO_RIGHT);
spaceWidth = vector.getGlyphLogicalBounds(0).getBounds().width;
}
@Override
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g2.setFont(getFont());
FontMetrics fm = g2.getFontMetrics();
ButtonModel mdl = getModel();
String s = getText();
g2.setComposite(AlphaComposite.SrcOver.derive(0.85f));
if (!mdl.isEnabled()) {
g2.setColor(new Color(0x808080));
g2.fillRoundRect(0, 0, getWidth(), getHeight(), 10, 10);
g2.setColor(new Color(0x000000));
} else
if (mdl.isPressed() || mdl.isSelected()) {
if (mdl.isRollover()) {
g2.setColor(new Color(0xE0E0E0));
} else {
g2.setColor(new Color(0xFFFFFF));
}
g2.fillRoundRect(0, 0, getWidth(), getHeight(), 10, 10);
g2.setColor(new Color(0x000000));
} else {
if (mdl.isRollover()) {
g2.setColor(new Color(0x000000));
} else {
g2.setColor(new Color(0x202020));
}
g2.fillRoundRect(0, 0, getWidth(), getHeight(), 10, 10);
g2.setColor(new Color(0xFFFFFFFF));
}
int x = (getWidth() - fm.stringWidth(s)) / 2;
int y = (getHeight() - fm.getHeight()) / 2 + fm.getAscent() + fm.getLeading();
g2.drawString(s, x, y);
}
public static void main(String ... args) {
Font font = new Font(Font.DIALOG, Font.PLAIN, FONT_SIZE);
Graphics2D g2d = createGraphics();
FontMetrics ref = null;
RuntimeException failure = null;
for (int a = 0; a < 360; a += 15) {
Graphics2D g = (Graphics2D)g2d.create();
g.rotate(Math.toRadians(a));
FontMetrics m = g.getFontMetrics(font);
g.dispose();
boolean status = true;
if (ref == null) {
ref = m;
} else {
status = ref.getAscent() == m.getAscent() &&
ref.getDescent() == m.getDescent() &&
ref.getLeading() == m.getLeading() &&
ref.getMaxAdvance() == m.getMaxAdvance();
}
System.out.printf("Metrics a%d, d%d, l%d, m%d (%d) %s\n",
m.getAscent(), m.getDescent(), m.getLeading(), m.getMaxAdvance(),
(int)a, status ? "OK" : "FAIL");
if (!status && failure == null) {
failure = new RuntimeException("Font metrics differ for angle " + a);
}
}
if (failure != null) {
throw failure;
}
System.out.println("done");
}
public static void main(String ... args) {
Font font = new Font(Font.DIALOG, Font.PLAIN, FONT_SIZE);
Graphics2D g2d = createGraphics();
FontMetrics ref = null;
RuntimeException failure = null;
for (int a = 0; a < 360; a += 15) {
Graphics2D g = (Graphics2D)g2d.create();
g.rotate(Math.toRadians(a));
FontMetrics m = g.getFontMetrics(font);
g.dispose();
boolean status = true;
if (ref == null) {
ref = m;
} else {
status = ref.getAscent() == m.getAscent() &&
ref.getDescent() == m.getDescent() &&
ref.getLeading() == m.getLeading() &&
ref.getMaxAdvance() == m.getMaxAdvance();
}
System.out.printf("Metrics a%d, d%d, l%d, m%d (%d) %s\n",
m.getAscent(), m.getDescent(), m.getLeading(), m.getMaxAdvance(),
(int)a, status ? "OK" : "FAIL");
if (!status && failure == null) {
failure = new RuntimeException("Font metrics differ for angle " + a);
}
}
if (failure != null) {
throw failure;
}
System.out.println("done");
}
public static void main(String ... args) {
Font font = new Font(Font.DIALOG, Font.PLAIN, FONT_SIZE);
Graphics2D g2d = createGraphics();
FontMetrics ref = null;
RuntimeException failure = null;
for (int a = 0; a < 360; a += 15) {
Graphics2D g = (Graphics2D)g2d.create();
g.rotate(Math.toRadians(a));
FontMetrics m = g.getFontMetrics(font);
g.dispose();
boolean status = true;
if (ref == null) {
ref = m;
} else {
status = ref.getAscent() == m.getAscent() &&
ref.getDescent() == m.getDescent() &&
ref.getLeading() == m.getLeading() &&
ref.getMaxAdvance() == m.getMaxAdvance();
}
System.out.printf("Metrics a%d, d%d, l%d, m%d (%d) %s\n",
m.getAscent(), m.getDescent(), m.getLeading(), m.getMaxAdvance(),
(int)a, status ? "OK" : "FAIL");
if (!status && failure == null) {
failure = new RuntimeException("Font metrics differ for angle " + a);
}
}
if (failure != null) {
throw failure;
}
System.out.println("done");
}
/** Measure text
* @param gc AWT Graphics context. Font must be set.
* @param text Text to measure, may be multi-line.
* @return Rectangle where (x, y) is the offset from the top-left
* corner of the text to its baseline as used for gc.drawString(),
* and (width, height) are the overall bounding box.
*/
public static Rectangle measureText(final Graphics2D gc, final String text)
{
final FontMetrics metrics = gc.getFontMetrics();
final Rectangle info = new Rectangle(0, metrics.getLeading() + metrics.getAscent(), 0, 0);
for (String line : text.split("\n"))
{
final int width = metrics.stringWidth(line);
if (width > info.width)
info.width = width;
info.height += metrics.getHeight();
}
return info;
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
@Override
public void run()
{
Logger.getLogger("").setLevel(Level.CONFIG);
for (Handler handler : Logger.getLogger("").getHandlers())
handler.setLevel(Level.CONFIG);
final double factor = getCalibrationFactor();
final Frame frame = new Frame("Java AWT: Calibration factor " + factor);
frame.setSize(text_width, text_height);
// Would like to use TextField or Label, but:
// "Peered AWT components, such as Label and TextField,
// can only use logical fonts." (Javadoc for 'Font')
// Sure enough at least on Windows the font family is
// ignored, only the style and size are honored
// by Label.setFont() or TextField.setFont()
// --> Use canvas and draw the text with font.
final Canvas text = new Canvas()
{
private static final long serialVersionUID = 1L;
@Override
public void paint(final Graphics gc)
{
super.paint(gc);
gc.setFont(font);
final FontMetrics metrics = gc.getFontMetrics();
// drawString x/y is 'baseline' of text
final int y = metrics.getLeading() + metrics.getAscent();
gc.drawString(FontCalibration.TEXT, 0, y);
// Show baseline and 'leading'
gc.setColor(Color.RED);
gc.drawLine(0, y, text_width, y);
gc.setColor(Color.GREEN);
gc.drawLine(0, metrics.getLeading(), text_width, metrics.getLeading());
}
};
text.setSize(text_width, text_height);
frame.add(text);
frame.addWindowListener(new WindowAdapter()
{
@Override
public void windowClosing(WindowEvent windowEvent)
{
System.exit(0);
}
});
frame.pack();
frame.setVisible(true);
if (Math.abs(factor - 1.0) > 0.01)
System.err.println("Calibration is not 1.0 but " + factor);
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
private void calcFontMetrics( Graphics2D g2d, int w, int h ) {
FontMetrics fm;
Graphics2D g2 = (Graphics2D)g2d.create();
/// ABP
if ( g2Transform != NONE && textToUse != FILE_TEXT ) {
g2.setFont( g2.getFont().deriveFont( getAffineTransform( g2Transform )) );
fm = g2.getFontMetrics();
}
else {
fm = g2.getFontMetrics();
}
maxAscent = fm.getMaxAscent();
maxDescent = fm.getMaxDescent();
if (maxAscent == 0) maxAscent = 10;
if (maxDescent == 0) maxDescent = 5;
if ( textToUse == RANGE_TEXT || textToUse == ALL_GLYPHS ) {
/// Give slight extra room for each character
maxAscent += 3;
maxDescent += 3;
gridWidth = fm.getMaxAdvance() + 6;
gridHeight = maxAscent + maxDescent;
if ( force16Cols )
numCharAcross = 16;
else
numCharAcross = ( w - 10 ) / gridWidth;
numCharDown = ( h - 10 ) / gridHeight;
canvasInset_X = ( w - numCharAcross * gridWidth ) / 2;
canvasInset_Y = ( h - numCharDown * gridHeight ) / 2;
if ( numCharDown == 0 || numCharAcross == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() * numCharAcross );
}
else {
maxDescent += fm.getLeading();
canvasInset_X = 5;
canvasInset_Y = 5;
/// gridWidth and numCharAcross will not be used in this mode...
gridHeight = maxAscent + maxDescent;
numCharDown = ( h - canvasInset_Y * 2 ) / gridHeight;
if ( numCharDown == 0 )
throw new CannotDrawException( isPrinting ? CANT_FIT_PRINT : CANT_FIT_DRAW );
/// If this is text loaded from file, prepares the LineBreak'ed
/// text layout at this point
if ( textToUse == FILE_TEXT ) {
if ( !isPrinting )
f2dt.fireChangeStatus( "LineBreaking Text... Please Wait", false );
lineBreakTLs = new Vector();
for ( int i = 0; i < fileText.length; i++ ) {
AttributedString as =
new AttributedString( fileText[i], g2.getFont().getAttributes() );
LineBreakMeasurer lbm =
new LineBreakMeasurer( as.getIterator(), g2.getFontRenderContext() );
while ( lbm.getPosition() < fileText[i].length() )
lineBreakTLs.add( lbm.nextLayout( (float) w ));
}
}
if ( !isPrinting )
resetScrollbar( verticalBar.getValue() );
}
}
/**
* Converts a line index to a y co-ordinate.
*
* @param line
* The line
*/
public int lineToY(int line) {
FontMetrics fm = painter.getFontMetrics();
return (line - firstLine) * fm.getHeight() - (fm.getLeading() + fm.getMaxDescent());
}