jhplot.v3d
Class Util
- java.lang.Object
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- jhplot.v3d.Util
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public final class Util extends java.lang.Object
Various useful functions of general purpose.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method and Description static void
belowWithin(java.awt.Component parent, java.awt.Component child)
static java.awt.Point
belowWithin(java.awt.Rectangle rec, java.awt.Dimension dim)
static void
centreWithin(java.awt.Component parent, java.awt.Component child)
Centres the child component within its parent.static java.awt.Point
centreWithin(java.awt.Rectangle rec, java.awt.Dimension dim)
Calculates the X and Y coordinates that a child component should have to be centered within its parent.static void
copyFile(java.io.File inputFile, java.io.File outputFile)
Copies the contents of any disk file to a specified output file.static boolean
deleteDir(java.io.File dir)
Deletes all files and subdirectories under dir.static boolean
ensureDirectory(java.io.File dir, java.io.File defaultDir)
Ensures the existence of the directory specified by the parameter.static boolean
ensureFilePath(java.io.File file, java.io.File defaultDir)
Ensures the existence of the directory which may be part of the path specification of parameterfile
.static java.lang.String
fileNameOfPath(java.lang.String path)
static java.lang.String
htmlEncoded(java.lang.String text)
Substitutes conflicting characters intext
with html masked expressions.static java.lang.String
pathNameOfPath(java.lang.String path)
static void
rightWithin(java.awt.Component parent, java.awt.Component child)
Puts to the rightstatic java.awt.Point
rightWithin(java.awt.Rectangle rec, java.awt.Dimension dim)
static java.lang.String
substituteText(java.lang.String text, java.lang.String token, java.lang.String substitute)
Renders a string based ontext
where any occurence oftoken
is replaced bysubstitute
.static java.lang.String
substituteTextS(java.lang.String text, java.lang.String token, java.lang.String substitute)
Renders a string based ontext
where any occurence oftoken
is replaced bysubstitute
.static int
textVariance(char[] ca)
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Method Detail
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centreWithin
public static java.awt.Point centreWithin(java.awt.Rectangle rec, java.awt.Dimension dim)
Calculates the X and Y coordinates that a child component should have to be centered within its parent. This method does not try to constrain the calculation so that the point remains wholly onscreen.- Parameters:
rec
- the bounding rectangle of the parent.dim
- the dimensions of the child.- Returns:
- the X and Y coordinates the child should have.
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rightWithin
public static java.awt.Point rightWithin(java.awt.Rectangle rec, java.awt.Dimension dim)
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belowWithin
public static java.awt.Point belowWithin(java.awt.Rectangle rec, java.awt.Dimension dim)
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centreWithin
public static void centreWithin(java.awt.Component parent, java.awt.Component child)
Centres the child component within its parent.- Parameters:
parent
- the parent component.child
- the child component.
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rightWithin
public static void rightWithin(java.awt.Component parent, java.awt.Component child)
Puts to the right- Parameters:
parent
- the parent component.child
- the child component.
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belowWithin
public static void belowWithin(java.awt.Component parent, java.awt.Component child)
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fileNameOfPath
public static java.lang.String fileNameOfPath(java.lang.String path)
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pathNameOfPath
public static java.lang.String pathNameOfPath(java.lang.String path)
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substituteText
public static java.lang.String substituteText(java.lang.String text, java.lang.String token, java.lang.String substitute)
Renders a string based ontext
where any occurence oftoken
is replaced bysubstitute
.- Returns:
- String
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substituteTextS
public static java.lang.String substituteTextS(java.lang.String text, java.lang.String token, java.lang.String substitute)
Renders a string based ontext
where any occurence oftoken
is replaced bysubstitute
.- Returns:
- String
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htmlEncoded
public static java.lang.String htmlEncoded(java.lang.String text)
Substitutes conflicting characters intext
with html masked expressions. The returned string is displayable in html interpreting components.- Parameters:
text
-- Returns:
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copyFile
public static void copyFile(java.io.File inputFile, java.io.File outputFile) throws java.io.IOException
Copies the contents of any disk file to a specified output file. If the output file is a relative path, it is made absolute against the directory of the input file. The output file will be overwritten if it exist. A CRC32 check is performed to compare source and copy after the copy process and if results negative aStreamCorruptedException
is thrown. Function reports errors toSystem.err
.- Parameters:
inputFile
- a File objectoutputFile
- a File object- Throws:
java.io.IOException
- if the function could not be completed because of an IO or CRC check error
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ensureFilePath
public static boolean ensureFilePath(java.io.File file, java.io.File defaultDir)
Ensures the existence of the directory which may be part of the path specification of parameterfile
. If the specified file is a relative path, it is made absolute againstdefaultDir
. IfdefaultDir
is null the System property "user.dir" is assumed as default directory.- Returns:
- true if and only if the parent directory of the specified file exists after this function terminates
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ensureDirectory
public static boolean ensureDirectory(java.io.File dir, java.io.File defaultDir)
Ensures the existence of the directory specified by the parameter. If the directory does not exist, an attempt is performed to create it including all necessary parent directories that may be implied by the specification.- Parameters:
dir
- File specifying the intended directory; if the specified path is a relative path, it is made absolute againstdefaultDir
. IfdefaultDir
is null the System directory "user.dir" is assumed as default.defaultDir
- default directory.- Returns:
- true if and only if the specified file exists and is a directory after this function terminates
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textVariance
public static int textVariance(char[] ca)
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deleteDir
public static boolean deleteDir(java.io.File dir)
Deletes all files and subdirectories under dir. Returns true if all deletions were successful. If a deletion fails, the method stops attempting to delete and returns false.
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