Getting the Bounds of a String in a nonGui App.
Hi Guys,
I want to use the getStringBounds method of the FontMetrics object and for accessing the FontMetrics instance, I need to have a gui (in the paintcomponent method). Since I'm working on a commandline application, how can I obtain the FontMetrics instance ?
I tried the following for returning the width of a string in pixels and it
returned zero ?!!!.
Toolkit.getDefaultToolkit ().getFontMetrics ( new Font ( "arial", 12, Font.PLAIN ) ).stringWidth ( "Hello" );
I appreciate your comments :-)
Ali Salehi
Thanks for your answer,
The program is not going to write anything in console. It generates SVG files
which contains the figures. For putting a multi-lined text in a
nice looking rectangle, I need to set the size of the rectangle in advance.
And for setting the size of the rectangle, I need to measure the
bounds of the text (which is going to be surrounded by the rectangle).
The DebugGraphics looks nice but it has two problems :
1. Heavy to instantiate. Is there any lightweight alternative.
2. Doesn't handle the Line formatting.
It is possible to do simple text formatting (by \t and \n) using simple
regular expressions and then getting the bounds using DebugGraphics.
But, is there any other more interesting solution available ?
Cheers,
Ali Salehi
Similar Messages
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Getting the bounds of a drawn image on a panel
Hello, I have a problem with getting the bounds of a drawn image on a panel...Since it is drawn as graphics, i tried getClipBounds and since my class extends JPanel i tried to get the bounds from the panel but neither of them worked properly. It only gets the bounds of a jframe that contains the panel.Then i tried to put the panel in a layeredpane and then a container; but this time the image disappeared completely. Hope someone can help or tell me what I am doing wrong. Thanks in advance. Here is the code below:
By the way what I am trying to do in this code is basically zooming the image in and out by dragging or the mouse wheel. But I need to get the bounds so that I can use this.
* To change this template, choose Tools | Templates
* and open the template in the editor.
* @author Admin
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Point;
import java.awt.RenderingHints;
import java.awt.Toolkit;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.NoninvertibleTransformException;
import java.awt.geom.Point2D;
import javax.swing.JFrame;
import javax.swing.JLayeredPane;
import javax.swing.JPanel;
public class ZoomDemo extends JPanel {
AffineTransform tx = new AffineTransform();
String imagePath = "D:/Documents and Settings/Admin/Belgelerim/tsrm/resim.jpg";
Image image = Toolkit.getDefaultToolkit().getImage(imagePath);
int width = image.getWidth(this);
int height = image.getHeight(this);
int scrwidth = Toolkit.getDefaultToolkit().getScreenSize().width;
int scrheight = Toolkit.getDefaultToolkit().getScreenSize().height;
double zoomfac = 1.0;
int xAdj;
int yAdj;
int prevY;
double scale = 1.0;
Point pt;
public static int x;
public static int y;
public static int w;
public static int h;
public ZoomDemo() {
this.addMouseWheelListener(new ZoomHandler());
this.addMouseListener(new ZoomHandler());
this.addMouseMotionListener(new ZoomHandler());
repaint();
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.drawImage(image, tx, this);
// x = (int) g2.getClipBounds().getX();
// y= (int) g2.getClipBounds().getY();
// w= (int) g2.getClipBounds().getWidth();
// h= (int) g2.getClipBounds().getHeight();
// System.out.println(x+" "+y+" "+w+" "+h);
// public int getRectx(){
// return x;
//public int getRecty(){
// return y;
//public int getRectw(){
// return w;
//public int getRecth(){
// return h;
private class ZoomHandler implements MouseWheelListener,MouseListener, MouseMotionListener {
public void mousePressed(MouseEvent e){
System.out.println("Mouse Pressed");
xAdj = e.getX();
yAdj = e.getY();
prevY = getY();
public void mouseDragged(MouseEvent e){
System.out.println("Mouse Dragged");
boolean zoomed = false;
if(e.getY()<prevY){
zoomfac = zoomfac + 0.1;
prevY = e.getY();
zoomed = true;
else if(e.getY()>prevY){
zoomfac = zoomfac - 0.1;
prevY = e.getY();
zoomed = true;
scale = zoomfac;
Point2D p1 = new Point((int)xAdj-(width/2),(int)yAdj-(height/2));
Point2D p2 = null;
try {
p2 = tx.inverseTransform(p1, null);
} catch (NoninvertibleTransformException ex) {
// should not get here
ex.printStackTrace();
return;
tx.setToIdentity();
tx.translate(p1.getX(), p1.getY());
tx.scale(scale, scale);
tx.translate(-p2.getX(), -p2.getY());
tx.transform(p1, p2);
ZoomDemo.this.revalidate();
ZoomDemo.this.repaint();
public void mouseWheelMoved(MouseWheelEvent e) {
if (e.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) {
Point2D p1 = e.getPoint();
Point2D p2 = null;
try {
p2 = tx.inverseTransform(p1, null);
} catch (NoninvertibleTransformException ex) {
// should not get here
ex.printStackTrace();
return;
scale -= (0.1 * e.getWheelRotation());
scale = Math.max(0.1, scale);
tx.setToIdentity();
tx.translate(p1.getX(), p1.getY());
tx.scale(scale, scale);
tx.translate(-p2.getX(), -p2.getY());
ZoomDemo.this.revalidate();
ZoomDemo.this.repaint();
public void mouseClicked(MouseEvent e) {
//throw new UnsupportedOperationException("Not supported yet.");
public void mouseReleased(MouseEvent e) {
//throw new UnsupportedOperationException("Not supported yet.");
public void mouseEntered(MouseEvent e) {
// throw new UnsupportedOperationException("Not supported yet.");
public void mouseExited(MouseEvent e) {
// throw new UnsupportedOperationException("Not supported yet.");
public void mouseMoved(MouseEvent e) {
// throw new UnsupportedOperationException("Not supported yet.");
public static void main(String[] args) {
//SwingUtilities.invokeLater(new ZoomDemo());
int scrwidth = Toolkit.getDefaultToolkit().getScreenSize().width;
int scrheight = Toolkit.getDefaultToolkit().getScreenSize().height;
JFrame f = new JFrame("Zoom");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(scrwidth , scrheight);
//JLayeredPane lp = new JLayeredPane();
//f.add(lp);
ZoomDemo zd = new ZoomDemo();
zd.getBounds();
f.add(zd);
//int x = (int) zd.getX();
//int y = (int) zd.getY();
//int w = (int) zd.getWidth();
//int h = (int) zd.getHeight();
//System.out.println(x+" "+y+" "+w+" "+h);
//zd.setBounds(x ,y ,w ,h );
//lp.add(zd, JLayeredPane.DEFAULT_LAYER);
//f.setLocationRelativeTo(null);
f.setVisible(true);
//lp.setVisible(true);
//zd.setVisible(true);
}Edited by: .mnemonic. on May 26, 2009 11:07 PM
Edited by: .mnemonic. on May 27, 2009 11:00 AMYou'll need a stable point in the component to track and orient to the scaling transform(s).
From this you can construct whatever you need in the way of image location and size.
Let's try a center–of–image tracking point:
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
import javax.swing.event.MouseInputAdapter;
public class ZD extends JPanel {
BufferedImage image;
Point center;
AffineTransform at = new AffineTransform();
Point2D.Double origin = new Point2D.Double(0,0);
public ZD(BufferedImage image) {
this.image = image;
center = new Point(image.getWidth()/2, image.getHeight()/2);
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BICUBIC);
g2.drawRenderedImage(image, at);
g2.setPaint(Color.red);
g2.fill(new Ellipse2D.Double(origin.x-1.5, origin.y-1.5, 4, 4));
g2.setPaint(Color.blue);
g2.fill(new Ellipse2D.Double(center.x-1.5, center.y-1.5, 4, 4));
private void setTransform(double scale) {
// keep image centered over Point "center"
double x = center.x - scale*image.getWidth()/2;
double y = center.y - scale*image.getHeight()/2;
origin.setLocation(x, y);
at.setToTranslation(x, y);
at.scale(scale, scale);
public static void main(String[] args) throws java.io.IOException {
java.net.URL url = ZD.class.getResource("images/hawk.jpg");
BufferedImage image = javax.imageio.ImageIO.read(url);
ZD test = new ZD(image);
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(test);
f.setSize(500,500);
f.setLocation(100,100);
f.setVisible(true);
test.addMouseListener(test.mia);
test.addMouseMotionListener(test.mia);
/** MouseAdapter okay in j2se 1.6+ */
private MouseInputAdapter mia = new MouseInputAdapter() {
final double SCALE_INC = 0.05;
final int SCALE_STEP = 20;
double scale = 1.0;
double lastStep;
public void mousePressed(MouseEvent e) {
Point p = e.getPoint();
center.setLocation(p);
//System.out.printf("center = [%3d, %3d]%n", p.x, p.y);
setTransform(scale);
repaint();
public void mouseDragged(MouseEvent e) {
// scale up/down with relative vertical motion
int step = (e.getY() - center.y)/SCALE_STEP;
if(step != lastStep) {
scale += SCALE_INC*((step < lastStep) ? -1 : 1);
//System.out.printf("step = %3d scale = %.3f%n", step, scale);
setTransform(scale);
lastStep = step;
repaint();
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Hello, everybody!
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How to get the bound object of an external table with OMB
Hello,
I try to find it but without success. So may be one of you, know this secret information.
I want to synchronize with the help of an OMB script my external tables.
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Example:
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OMBDESCRIBE CLASS_DEFINITION 'EXTERNAL_TABLE' GET PROPERTY_DEFINITIONS
BAD_FILE_LOCATION BAD_FILE_NAME BUSINESS_NAME DATA_FILES DEPLOYABLE DESCRIPTION
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ODE REJECTS_ARE_UNLIMITED SHADOW_TABLESPACE SHADOW_TABLE_NAME STRING_SIZES_IN TR
IM UOIDThen I try the BOUND_OBJECT cached properties of a mapping operator but no luck.
OMBRETRIEVE EXTERNAL_TABLE 'MY_EXTERNAL_TABLE' GET BOUND_OBJECT
OMB00001: Encountered BOUND_OBJECT at line: 1, column: 56. Was expecting one of:
"PROPERTIES" ...
"REF" ...
"REFERENCE" ...
"COLUMN" ...
"DEFAULT_LOCATION" ...
"FLAT_FILE" ...
"RECORD" ...
"COLUMNS" ...
"DATA_FILES" ...
"DATA_RULE_USAGES" ...I have already the file and the record with the FLAT_FILE and RECORD properties
OMBRETRIEVE EXTERNAL_TABLE 'MY_EXTERNAL_TABLE' GET FLAT_FILE
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Thanks in advance and good day
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Edited by: gerardnico on Jan 13, 2010 12:08 PM
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The BOUND_OBJECT property of a table operator is not in the API.
OMBDESCRIBE CLASS_DEFINITION 'TABLE_OPERATOR' GET PROPERTY_DEFINITIONS
ADVANCED_MATCH_BY_CONSTRAINT AUTOMATIC_HINTS_ENABLED BOUND_NAME BUSINESS_NAME CO
NFLICT_RESOLUTION DATABASE_FILE_NAME DATABASE_LINK DATA_COLLECTION_FREQUENCY DAT
A_RULES DB_LOCATION DEBUG_BOUND_NAME DEBUG_DB_LOCATION DESCRIPTION DIRECT ENABLE
_CONSTRAINTS ERROR_SELECT_FILTER ERROR_SELECT_ROLL_UP ERROR_TABLE_NAME EVALUATE_
CHECK_CONSTRAINTS EXCEPTIONS_TABLE_NAME EXTRACTION_HINT IS_TEMP_STAGE_TABLE JOIN
RANK KEYS_READONLY LOADING_HINT LOADING_TYPE MATCH_BY_CONSTRAINT OPTIMIZE_MERGE
PARTITION_NAME PEL_ENABLED PRIMARY_SOURCE RECORDS_TO_SKIP REPLACE_DATA ROW_COUNT
ROW_COUNT_ENABLED SCHEMA SINGLEROW SORTED_INDEXES_CLAUSE SUBPARTITION_NAME TARG
ET_FILTER_FOR_DELETE TARGET_FILTER_FOR_UPDATE TARGET_LOAD_ORDER TEMP_STAGE_TABLE
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Morning,
I’m trying to get the length in bytes of a string, the characters below are 3 byte UTF-8, but when I display
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thanksOK, it is not 'o with acute', but rather 'Greek small omicron with tonos'.
This page may help you sort it out:http://www.fileformat.info/info/unicode/char/3cc/index.htm.
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4
2
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How to get the viewrow value by string
Using Jdev11.1.1.5.0-adfbc-ireport3.0.0
here i'll describe: what i did.
am using jsff(dynamic region) while hitting the af:tree nodes it will opens. ok fine
i had somevo with manually wroten query. and query is fine no problem with that
here i give sample not a original query
select * from sometable where acctid = :pacctidi drag and drop the pacctid from corresponding execute params vo as selectoncechoice
static vo
Data value - account payable , advance
Data Name - ap,ad
in that jsff
*page representation*
account type : account payable (ap) - select one choice type
advance (ad) - select one choice type
like this some select once choice and some inputs.
Run report - command button
.jsff code
<af:selectOneChoice value="#{bindings.ACCT_TYPE.inputValue}"
label="Account Type"
shortDesc="#{bindings.ACCT_TYPE.hints.tooltip}"
id="soc3" required="true"
autoSubmit="true"
binding="#{backingBeanScope.SUP1040V.soc3}"
valuePassThru="true"
valueChangeListener="#{backingBeanScope.SUP1040V.ValueChangeListener1}">
<f:selectItems value="#{bindings.ACCT_TYPE.items}" id="si3"/>
</af:selectOneChoice>
<af:commandToolbarButton text="Export in pdf" id="ctb2">
<af:fileDownloadActionListener method="#{backingBeanScope.SUP1040V.Report}"
/>
</af:commandToolbarButton>.java
//while hitting the button following logs are appeared i show it as commented format.
public void Report(FacesContext context, OutputStream out) throws IOException,Exception
FacesContext ctx = FacesContext.getCurrentInstance();
HttpServletRequest request =
(HttpServletRequest)ctx.getExternalContext().getRequest();
HttpServletResponse response =
(HttpServletResponse)ctx.getExternalContext().getResponse();
BindingContainer bindings1 = BindingContext.getCurrent().getCurrentBindingsEntry();
System.out.println("print binding" +bindings1 );
//while using sop i get this in my log : : print binding ReportsPageFragments_SUP1040VPageDef_WEB_INF_TaskFlows_SUP1040_V_TF_xml_SUP1040_V_TF
JUCtrlListBinding listBinding1 = (JUCtrlListBinding)bindings1.get("ACCT_TYPE");
System.out.println("print list bindings" +listBinding1 );
//while using sop i get this in my log : : print list bindings0
Object selectedValue1 = listBinding1.getSelectedValue();
System.out.println("print selected value" + selectedValue1);
//while using sop i get this in my log : : print selected valueViewRow [oracle.jbo.Key[AP ]]
request.setAttribute("ACCT_TYPE", //here i want the value "AP" in String );
if i use like this means
request.setAttribute("ACCT_TYPE", soc1.getValue() ); i get the index value.
i need the dataname "ap" so i go above method which say wrotes ...
request.getRequestDispatcher(response.encodeURL("/sup1040servlet")).forward(request,response);
System.out.println("hihihihih");
response.flushBuffer();
ctx.responseComplete();
public void ValueChangeListener1(ValueChangeEvent valueChangeEvent) {
// Add event code here...
String AcctType = valueChangeEvent.getNewValue().toString();
System.out.println("AcctType" + AcctType);
FacesContext contxt = FacesContext.getCurrentInstance();
valueChangeEvent.getComponent().processUpdates(contxt);
BindingContainer bindings1 =
BindingContext.getCurrent().getCurrentBindingsEntry();
// Get the sepecific list binding
JUCtrlListBinding listBinding1 =
(JUCtrlListBinding)bindings1.get("ACCT_TYPE");
// Get the value which is currently selected
Object selectedValue1 = listBinding1.getSelectedValue();
System.out.println(selectedValue1);
}if i get ap means my report runs. or else it will shows empty page.
how to get the viewrowimpl class value as string.
Edited by: ADF7 on Mar 24, 2012 7:27 AMADF7,
I'm not sure I understand what you are up to.
As far as I understand you want to get the display value instead of the index
I use this code
public void StatusChangedListener(ValueChangeEvent valueChangeEvent)
BindingContext lBindingContext = BindingContext.getCurrent();
BindingContainer lBindingContainer = lBindingContext.getCurrentBindingsEntry();
JUCtrlListBinding list = (JUCtrlListBinding) lBindingContainer.get("Status");
int newindex = (Integer) valueChangeEvent.getNewValue();
Object row = list.getDisplayData(); // Wichtig um die liste zu laden!!!!
Row lFromList = (Row) list.getValueFromList(newindex);
Object lAttribute = lFromList.getAttribute("Value");
String newVal = (String) lAttribute;
}to get the value from a selectOneChoice component...
Timo -
How can i get the length of a string with Simplified Chinese?
when i use eventwriter to add content to a xmldocument,there are some chinese simplified string in it,i use String.length() for the length ,but it is not correct~how can i get the right length for eventwriter?
Below is a simple patch for this problem. Using this patch you need to pass 0 as the length argument for any XmlEventWriter interfaces that take a string length.
Regards,
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diff -c dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp
*** dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp Fri Nov 3 12:26:11 2006
--- dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp Thu Mar 15 13:58:13 2007
*** 234,239 ****
--- 234,241 ----
CHECK_NULL(text);
CHECK_SUCCESS();
+ if (!length)
+ length = ::strlen((const char *)text);
if (!_current)
throwBadWrite("writeText: requires writeStartDocument");
try {
*** 413,418 ****
--- 415,422 ----
CHECK_NULL(dtd);
CHECK_SUCCESS();
+ if (!length)
+ length = ::strlen((const char *)dtd);
if (_current) {
if (!_current->isDoc())
throwBadWrite("writeDTD: must occur before content");
diff -c dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsWriter.cpp dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsWriter.cpp
*** dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsWriter.cpp Tue Jan 2 16:01:14 2007
--- dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsWriter.cpp Thu Mar 15 13:59:25 2007
*** 326,331 ****
--- 326,333 ----
needsEscape = false;
else
needsEscape = true;
+ if (!length)
+ length = ::strlen((const char *)chars);
writeTextWithEscape(type, chars, length, needsEscape);
*** 336,341 ****
--- 338,345 ----
bool needsEscape)
if(_entCount == 0) {
+ if (!len)
+ len = ::strlen((const char *)chars);
if ((type == XmlEventReader::Characters) ||
(type == XmlEventReader::Whitespace)) {
char *buf = 0;
*** 381,386 ****
--- 385,392 ----
NsWriter::writeDTD(const unsigned char *data, int len)
if(_entCount == 0) {
+ if (!len)
+ len = ::strlen((const char *)data);
_stream->write(data, len);
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Thanks!<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Jinyu Wang ([email protected]):
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like untitle.txt
how to get the postion of '.'.
AmitHi Amit,
Use SEARCH statement to find out a character or a string in a string.
DATA V_STRING TYPE STRING VALUE 'untitle.txt'.
SEARCH '.' FOR V_STRING.
If search is successful then it will return position of character or string into system field SY-FDPOS.
If your idea is get values of filename and extension by separating period then use simply SPLIT statement.
SPLIT V_STRING AT '.' INTO V_FILE V_EXT .
Thanks,
Vinay
Edited by: Vinaykumar G on Jul 1, 2008 8:52 PM
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