/// <summary>
/// 转换文本使其长度能够在指定控件的宽度范围内显示，使用省略号替换剪辑掉的部分。
/// </summary>
/// <param name="text">将要被转换的文本。</param>
/// <param name="ctrl">剪辑后的文本即将在此控件内显示。</param>
/// <param name="options">指示如何处理文本。</param>
/// <returns>当参数“text”为 null 或 string.Empty 返回 text 的值，否则返回转换后的内容。</returns>
public static string Compact(string text, Control ctrl, EllipsisFormat options)
{
if (ctrl == null)
{
throw new ArgumentNullException("ctrl");
}
using (Graphics dc = ctrl.CreateGraphics())
{
return(Compact(dc, text, ctrl.Width, ctrl.Font, options));
}
}
uint isChecked(EllipsisFormat fmt)
{
EllipsisFormat mask = fmt;
switch (fmt)
{
case EllipsisFormat.None:
case EllipsisFormat.Start:
case EllipsisFormat.End:
mask = EllipsisFormat.Middle;
break;
}
return(((AutoEllipsis & mask) == fmt) ? MF_CHECKED : MF_UNCHECKED);
}
public Aircraft()
{
InitializeComponent();
updateVersion();
this.usingUTC = true;
EllipsisFormat fmt = EllipsisFormat.None;
fmt |= EllipsisFormat.Middle;
fmt |= EllipsisFormat.Word;
this.imagePath.AutoEllipsis = fmt;
this.workingDirectory = null;
this.fileCount = 0;
this.imagePath.Text = "";
this.trackLogFile.Text = "";
this.trackLog = null;
this.trackLogLocation.Enabled = false;
this.currentFile.Text = "";
this.readingFile.Text = "0000 of 0000";
this.fileFailures.Text = String.Format("{0,4:0000}", 0);;
this.convertImageFiles.Enabled = false;
this.direction.Text = String.Format("{0:000}", getOffsetHeading());
this.photographerPosition.Enabled = false;
this.trackLogFile.Text = "";
this.cameraTime.Enabled = false;
this.deltaSeconds.Text = "";
this.doReverseGeocode.Checked = isNetworkOn() ? true : false;
setGeocodingOption(false);
this.heading315Lbl.Visible = false;
this.direction315.Enabled = false;
this.direction315.Visible = false;
if (Directory.Exists(IMAGE_ROOT))
{
this.imageFolderBrowserDialog.SelectedPath = IMAGE_ROOT;
}
else
{
this.imageFolderBrowserDialog.SelectedPath = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
}
}
/// <summary>
/// Truncates a text string to fit within a given control width by replacing trimmed text with ellipses.
/// </summary>
/// <param name="text">String to be trimmed.</param>
/// <param name="ctrl">text must fit within ctrl width.
/// The ctrl's Font is used to measure the text string.</param>
/// <param name="options">Format and alignment of ellipsis.</param>
/// <returns>This function returns text trimmed to the specified witdh.</returns>
public static string Compact(string text, Func<string, Size> measure, double givenWidth, EllipsisFormat options)
{
if (string.IsNullOrEmpty(text))
return text;
// no aligment information
if ((EllipsisFormat.Middle & options) == 0)
return text;
Size s = measure(text);
// control is large enough to display the whole text
if (s.Width <= givenWidth)
return text;
string pre = "";
string mid = text;
string post = "";
bool isPath = (EllipsisFormat.Path & options) != 0;
// split path string into <drive><directory><filename>
if (isPath)
{
pre = Path.GetPathRoot(text);
mid = Path.GetDirectoryName(text).Substring(pre.Length);
post = Path.GetFileName(text);
}
int len = 0;
int seg = mid.Length;
string fit = "";
// find the longest string that fits into
// the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = mid.Length;
if (left > right)
continue;
if ((EllipsisFormat.Middle & options) == EllipsisFormat.Middle)
{
right -= left / 2;
left -= left / 2;
}
else if ((EllipsisFormat.Start & options) != 0)
{
right -= left;
left = 0;
}
// trim at a word boundary using regular expressions
if ((EllipsisFormat.Word & options) != 0)
{
if ((EllipsisFormat.End & options) != 0)
{
left -= prevWord.Match(mid, 0, left).Length;
}
if ((EllipsisFormat.Start & options) != 0)
{
right += nextWord.Match(mid, right).Length;
}
}
// build and measure a candidate string with ellipsis
string tst = mid.Substring(0, left) + EllipsisChars + mid.Substring(right);
// restore path with <drive> and <filename>
if (isPath)
{
tst = Path.Combine(Path.Combine(pre, tst), post);
}
s = measure(tst);
// candidate string fits into control boundaries, try a longer string
// stop when seg <= 1
if (s.Width <= givenWidth)
{
len += seg;
fit = tst;
}
}
if (len == 0) // string can't fit into control
{
// "path" mode is off, just return ellipsis characters
if (!isPath)
return EllipsisChars;
// <drive> and <directory> are empty, return <filename>
if (pre.Length == 0 && mid.Length == 0)
return post;
// measure "C:\...\filename.ext"
fit = Path.Combine(Path.Combine(pre, EllipsisChars), post);
s = measure(fit);
// if still not fit then return "...\filename.ext"
if (s.Width > givenWidth)
fit = Path.Combine(EllipsisChars, post);
}
return fit;
}
/// <summary>
/// Truncates a text string to fit within a given width by replacing trimmed text with ellipses.
/// </summary>
/// <param name="text">String to be trimmed.</param>
/// <param name="font">Font to be used to measure the text.</param>
/// <param name="proposedWidth">The target width to accomodate the text.</param>
/// <param name="options">Format and alignment of ellipsis.</param>
/// <returns>This function returns text trimmed to the specified witdh.</returns>
public static string Compact(string text, Font font, int proposedWidth, EllipsisFormat options)
{
if (string.IsNullOrEmpty(text))
{
return(text);
}
// no aligment information
if (((EllipsisFormat.Path | EllipsisFormat.Start | EllipsisFormat.End | EllipsisFormat.Middle) & options) == 0)
{
return(text);
}
if (font == null)
{
throw new ArgumentNullException("font");
}
Size s = TextRenderer.MeasureText(text, font);
// control is large enough to display the whole text
if (s.Width <= proposedWidth)
{
return(text);
}
string pre = "";
string mid = text;
string post = "";
bool isPath = (EllipsisFormat.Path & options) != 0;
// split path string into <drive><directory><filename>
if (isPath)
{
pre = Path.GetPathRoot(text);
mid = Path.GetDirectoryName(text).Substring(pre.Length);
post = Path.GetFileName(text);
}
int len = 0;
int seg = mid.Length;
string fit = "";
// find the longest string that fits into
// the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = mid.Length;
if (left > right)
{
continue;
}
if ((EllipsisFormat.Middle & options) == EllipsisFormat.Middle)
{
right -= left / 2;
left -= left / 2;
}
else if ((EllipsisFormat.Start & options) != 0)
{
right -= left;
left = 0;
}
// trim at a word boundary using regular expressions
if ((EllipsisFormat.Word & options) != 0)
{
if ((EllipsisFormat.End & options) != 0)
{
left -= prevWord.Match(mid, 0, left).Length;
}
if ((EllipsisFormat.Start & options) != 0)
{
right += nextWord.Match(mid, right).Length;
}
}
// build and measure a candidate string with ellipsis
string tst = mid.Substring(0, left) + EllipsisChars + mid.Substring(right);
// restore path with <drive> and <filename>
if (isPath)
{
tst = Path.Combine(Path.Combine(pre, tst), post);
}
s = TextRenderer.MeasureText(tst, font);
// candidate string fits into control boundaries, try a longer string
// stop when seg <= 1
if (s.Width <= proposedWidth)
{
len += seg;
fit = tst;
}
}
if (len == 0) // string can't fit into control
{
// "path" mode is off, just return ellipsis characters
if (!isPath)
{
return(EllipsisChars);
}
// <directory> is empty
if (mid.Length == 0)
{
// <drive> is empty, return compacted <filename>
if (pre.Length == 0)
{
return(Compact(text, font, proposedWidth, options & ~EllipsisFormat.Path));
}
// we compare ellipsis and <drive> to get the shorter
string testEllipsis = Path.Combine(EllipsisChars, ".");
testEllipsis = testEllipsis.Substring(0, testEllipsis.Length - 1);
if (TextRenderer.MeasureText(testEllipsis, font).Width < TextRenderer.MeasureText(pre, font).Width)
{
pre = EllipsisChars;
}
}
else
{
// "C:\...\filename.ext" No need to check for drive, but generates extra check
if (pre.Length > 0)
{
fit = Path.Combine(Path.Combine(pre, EllipsisChars), post);
s = TextRenderer.MeasureText(fit, font);
if (s.Width <= proposedWidth)
{
return(fit);
}
}
pre = EllipsisChars;
}
// Try "...\filename.ext" or "c:\filename.ext"
fit = Path.Combine(pre, post);
s = TextRenderer.MeasureText(fit, font);
// if still not fit then return "...\f...e.ext"
if (s.Width > proposedWidth)
{
fit = Path.Combine(pre, Compact(post, font, proposedWidth - TextRenderer.MeasureText(fit.Substring(0, fit.Length - post.Length), font).Width, options & ~EllipsisFormat.Path));
}
}
return(fit);
}
/// <summary>
/// Truncates a text string to fit within a given control width by replacing trimmed text with ellipses.
/// </summary>
/// <param name="text">String to be trimmed.</param>
/// <param name="control">text must fit within control width.
/// The control's Font is used to measure the text string.</param>
/// <param name="options">Format and alignment of ellipsis.</param>
/// <returns>This function returns text trimmed to the specified width.</returns>
public static string Compact(string text, Control control, EllipsisFormat options)
{
if (string.IsNullOrEmpty(text))
{
return(text);
}
// no alignment information
if (!options.FastHasFlag(EllipsisFormat.Start) && !options.FastHasFlag(EllipsisFormat.Middle) && !options.FastHasFlag(EllipsisFormat.End))
{
return(text);
}
if (control == null)
{
throw new ArgumentNullException(nameof(control));
}
using (Graphics dc = control.CreateGraphics())
{
Size s = TextRenderer.MeasureText(dc, text, control.Font);
// control is large enough to display the whole text
if (s.Width <= control.Width)
{
return(text);
}
string pre = string.Empty;
string mid = text;
string post = string.Empty;
bool isWord = options.FastHasFlag(EllipsisFormat.Word);
bool isPath = options.FastHasFlag(EllipsisFormat.Path);
bool isStart = options.FastHasFlag(EllipsisFormat.Start);
bool isMiddle = options.FastHasFlag(EllipsisFormat.Middle);
bool isEnd = options.FastHasFlag(EllipsisFormat.End);
// split path string into <drive><directory><filename>
if (isPath)
{
pre = Path.GetPathRoot(text);
mid = Path.GetDirectoryName(text)?.Substring(pre.Length) ?? string.Empty;
post = Path.GetFileName(text);
}
int len = 0;
int seg = mid.Length;
string fit = string.Empty;
// find the longest string that fits into
// the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = mid.Length;
if (left > right)
{
continue;
}
if (isMiddle)
{
right -= left / 2;
left -= left / 2;
}
else if (isStart)
{
right -= left;
left = 0;
}
// trim at a word boundary using regular expressions
if (isWord)
{
if (isEnd)
{
left -= __prevWord.Match(mid, 0, left).Length;
}
if (isStart)
{
right += __nextWord.Match(mid, right).Length;
}
}
// build and measure a candidate string with ellipsis
string tst = mid.Substring(0, left) + ELLIPSIS_CHARS + mid.Substring(right);
// restore path with <drive> and <filename>
if (isPath)
{
tst = Path.Combine(Path.Combine(pre, tst), post);
}
s = TextRenderer.MeasureText(dc, tst, control.Font);
if (s.Width > control.Width)
{
continue;
}
// candidate string fits into control boundaries, try a longer string
// stop when seg <= 1
len += seg;
fit = tst;
}
if (len != 0)
{
return(fit);
}
// string can't fit into control
// "path" mode is off, just return ellipsis characters
if (!isPath)
{
return(ELLIPSIS_CHARS);
}
// <drive> and <directory> are empty, return <filename>
if (pre.Length == 0 && mid.Length == 0)
{
return(post);
}
// measure "C:\...\filename.ext"
fit = Path.Combine(Path.Combine(pre, ELLIPSIS_CHARS), post);
s = TextRenderer.MeasureText(dc, fit, control.Font);
// if still not fit then return "...\filename.ext"
if (s.Width > control.Width)
{
fit = Path.Combine(ELLIPSIS_CHARS, post);
}
return(fit);
}
}
/// <summary>
/// Truncates a text string to fit within a given width by replacing trimmed text with ellipses.
/// </summary>
/// <param name="text">String to be trimmed.</param>
/// <param name="font">Font to be used to measure the text.</param>
/// <param name="proposedWidth">The target width to accomodate the text.</param>
/// <param name="options">Format and alignment of ellipsis.</param>
/// <returns>This function returns text trimmed to the specified witdh.</returns>
public static string Compact(string text, Font font, int proposedWidth, EllipsisFormat options)
{
if (string.IsNullOrEmpty(text))
return text;
// no aligment information
if (((EllipsisFormat.Path | EllipsisFormat.Start | EllipsisFormat.End | EllipsisFormat.Middle) & options) == 0)
return text;
if (font == null)
throw new ArgumentNullException("font");
Size s = TextRenderer.MeasureText(text, font);
// control is large enough to display the whole text
if (s.Width <= proposedWidth)
return text;
string pre = "";
string mid = text;
string post = "";
bool isPath = (EllipsisFormat.Path & options) != 0;
// split path string into <drive><directory><filename>
if (isPath)
{
pre = Path.GetPathRoot(text);
mid = Path.GetDirectoryName(text).Substring(pre.Length);
post = Path.GetFileName(text);
}
int len = 0;
int seg = mid.Length;
string fit = "";
// find the longest string that fits into
// the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = mid.Length;
if (left > right)
continue;
if ((EllipsisFormat.Middle & options) == EllipsisFormat.Middle)
{
right -= left / 2;
left -= left / 2;
}
else if ((EllipsisFormat.Start & options) != 0)
{
right -= left;
left = 0;
}
// trim at a word boundary using regular expressions
if ((EllipsisFormat.Word & options) != 0)
{
if ((EllipsisFormat.End & options) != 0)
{
left -= prevWord.Match(mid, 0, left).Length;
}
if ((EllipsisFormat.Start & options) != 0)
{
right += nextWord.Match(mid, right).Length;
}
}
// build and measure a candidate string with ellipsis
string tst = mid.Substring(0, left) + EllipsisChars + mid.Substring(right);
// restore path with <drive> and <filename>
if (isPath)
{
tst = Path.Combine(Path.Combine(pre, tst), post);
}
s = TextRenderer.MeasureText(tst, font);
// candidate string fits into control boundaries, try a longer string
// stop when seg <= 1
if (s.Width <= proposedWidth)
{
len += seg;
fit = tst;
}
}
if (len == 0) // string can't fit into control
{
// "path" mode is off, just return ellipsis characters
if (!isPath)
return EllipsisChars;
// <directory> is empty
if (mid.Length == 0)
{
// <drive> is empty, return compacted <filename>
if (pre.Length == 0)
return Compact(text, font, proposedWidth, options & ~EllipsisFormat.Path);
// we compare ellipsis and <drive> to get the shorter
string testEllipsis = Path.Combine(EllipsisChars, ".");
testEllipsis = testEllipsis.Substring(0, testEllipsis.Length - 1);
if (TextRenderer.MeasureText(testEllipsis, font).Width < TextRenderer.MeasureText(pre, font).Width)
pre = EllipsisChars;
}
else
{
// "C:\...\filename.ext" No need to check for drive, but generates extra check
if (pre.Length > 0)
{
fit = Path.Combine(Path.Combine(pre, EllipsisChars), post);
s = TextRenderer.MeasureText(fit, font);
if (s.Width <= proposedWidth) return fit;
}
pre = EllipsisChars;
}
// Try "...\filename.ext" or "c:\filename.ext"
fit = Path.Combine(pre, post);
s = TextRenderer.MeasureText(fit, font);
// if still not fit then return "...\f...e.ext"
if (s.Width > proposedWidth)
{
fit = Path.Combine(pre, Compact(post, font, proposedWidth - TextRenderer.MeasureText(fit.Substring(0, fit.Length - post.Length), font).Width, options & ~EllipsisFormat.Path));
}
}
return fit;
}
/// <summary>
/// Truncates a text string to fit within a given control width by replacing trimmed text with ellipses.
/// </summary>
/// <param name="text">String to be trimmed.</param>
/// <param name="ctrl">text must fit within ctrl width.
/// The ctrl's Font is used to measure the text string.</param>
/// <param name="options">Format and alignment of ellipsis.</param>
/// <returns>This function returns text trimmed to the specified witdh.</returns>
public static string Compact(string text, Control ctrl, EllipsisFormat options)
{
if (string.IsNullOrEmpty(text))
return text;
// no aligment information
if ((EllipsisFormat.Middle & options) == 0)
return text;
if (ctrl == null)
throw new ArgumentNullException("ctrl");
using (Graphics dc = ctrl.CreateGraphics())
{
Size s = TextRenderer.MeasureText(dc, text, ctrl.Font);
// control is large enough to display the whole text
if (s.Width <= ctrl.Width)
return text;
string pre = "";
string mid = text;
string post = "";
bool isPath = (EllipsisFormat.Path & options) != 0;
// split path string into <drive><directory><filename>
if (isPath)
{
pre = Path.GetPathRoot(text);
mid = Path.GetDirectoryName(text).Substring(pre.Length);
post = Path.GetFileName(text);
}
int len = 0;
int seg = mid.Length;
string fit = "";
// find the longest string that fits into
// the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = mid.Length;
if (left > right)
continue;
if ((EllipsisFormat.Middle & options) == EllipsisFormat.Middle)
{
right -= left / 2;
left -= left / 2;
}
else if ((EllipsisFormat.Start & options) != 0)
{
right -= left;
left = 0;
}
// trim at a word boundary using regular expressions
if ((EllipsisFormat.Word & options) != 0)
{
if ((EllipsisFormat.End & options) != 0)
{
left -= prevWord.Match(mid, 0, left).Length;
}
if ((EllipsisFormat.Start & options) != 0)
{
right += nextWord.Match(mid, right).Length;
}
}
// build and measure a candidate string with ellipsis
string tst = mid.Substring(0, left) + EllipsisChars + mid.Substring(right);
// restore path with <drive> and <filename>
if (isPath)
{
tst = Path.Combine(Path.Combine(pre, tst), post);
}
s = TextRenderer.MeasureText(dc, tst, ctrl.Font);
// candidate string fits into control boundaries, try a longer string
// stop when seg <= 1
if (s.Width <= ctrl.Width)
{
len += seg;
fit = tst;
}
}
if (len == 0) // string can't fit into control
{
// "path" mode is off, just return ellipsis characters
if (!isPath)
return EllipsisChars;
// <drive> and <directory> are empty, return <filename>
if (pre.Length == 0 && mid.Length == 0)
return post;
// measure "C:\...\filename.ext"
fit = Path.Combine(Path.Combine(pre, EllipsisChars), post);
s = TextRenderer.MeasureText(dc, fit, ctrl.Font);
// if still not fit then return "...\filename.ext"
if (s.Width > ctrl.Width)
fit = Path.Combine(EllipsisChars, post);
}
return fit;
}
}
public static string Compact(string strText, Control objControl, EllipsisFormat enuEllipsisFormat)
{
if (string.IsNullOrEmpty(strText))
{
return(strText);
}
if ((EllipsisFormat.Middle & enuEllipsisFormat) == 0)
{
return(strText);
}
if (objControl == null)
{
throw new ArgumentNullException("objControl", "A valid non-null Control is expected.");
}
using (Graphics objGraphics = objControl.CreateGraphics())
{
Size objSize = TextRenderer.MeasureText(objGraphics, strText, objControl.Font);
if (objSize.Width <= objControl.Width)
{
return(strText);
}
string strBegin = string.Empty;
string strMiddle = strText;
string strEnd = string.Empty;
bool blnIsPath = (EllipsisFormat.Path & enuEllipsisFormat) != 0;
if (blnIsPath)
{
strBegin = Path.GetPathRoot(strText);
strMiddle = Path.GetDirectoryName(strText).Substring(strBegin.Length);
strEnd = Path.GetFileName(strText);
}
int intLength = 0;
int intSegment = strMiddle.Length;
string strFit = string.Empty;
while (intSegment > 1)
{
intSegment -= intSegment / 2;
int intLeft = intLength + intSegment;
int intRight = strMiddle.Length;
if (intLeft > intRight)
{
continue;
}
if ((EllipsisFormat.Middle & enuEllipsisFormat) == EllipsisFormat.Middle)
{
intRight -= intLeft / 2;
intLeft -= intLeft / 2;
}
else if ((EllipsisFormat.Start & enuEllipsisFormat) != 0)
{
intRight -= intLeft;
intLeft = 0;
}
if ((EllipsisFormat.Word & enuEllipsisFormat) != 0)
{
if ((EllipsisFormat.End & enuEllipsisFormat) != 0)
{
intLeft -= objPreviousWord.Match(strMiddle, 0, intLeft).Length;
}
if ((EllipsisFormat.Start & enuEllipsisFormat) != 0)
{
intRight += objNextWord.Match(strMiddle, intRight).Length;
}
}
string strTest = strMiddle.Substring(0, intLeft) + EllipsisChars + strMiddle.Substring(intRight);
if (blnIsPath)
{
strTest = Path.Combine(Path.Combine(strBegin, strTest), strEnd);
}
objSize = TextRenderer.MeasureText(objGraphics, strTest, objControl.Font);
if (objSize.Width <= objControl.Width)
{
intLength += intSegment;
strFit = strTest;
}
}
if (intLength == 0)
{
if (blnIsPath == false)
{
return(EllipsisChars);
}
if ((strBegin.Length == 0) && (strMiddle.Length == 0))
{
return(strEnd);
}
strFit = Path.Combine(Path.Combine(strBegin, EllipsisChars), strEnd);
objSize = TextRenderer.MeasureText(objGraphics, strFit, objControl.Font);
if (objSize.Width > objControl.Width)
{
strFit = Path.Combine(EllipsisChars, strEnd);
}
}
return(strFit);
}
}
uint isChecked(EllipsisFormat fmt)
{
EllipsisFormat mask = fmt;
switch (fmt)
{
case EllipsisFormat.None:
case EllipsisFormat.Start:
case EllipsisFormat.End:
mask = EllipsisFormat.Middle;
break;
}
return ((AutoEllipsis & mask) == fmt) ? MF_CHECKED : MF_UNCHECKED;
}
internal static string Ellipsis(this string text, int length, EllipsisFormat options = EllipsisFormat.Start | EllipsisFormat.None)
{
if (string.IsNullOrEmpty(text))
return text;
// no aligment information
if ((EllipsisFormat.Middle & options) == 0)
return text;
if (length <= 0)
throw new ArgumentOutOfRangeException("length");
// control is large enough to display the whole text
if (text.Length <= length)
return text;
var pre = "";
var mid = text;
var post = "";
var isPath = (EllipsisFormat.Path & options) != 0;
// split path string into <drive><directory><filename>
if (isPath)
{
pre = Path.GetPathRoot(text);
mid = Path.GetDirectoryName(text).Substring(pre.Length);
post = Path.GetFileName(text);
}
var len = 0;
var seg = mid.Length;
var fit = "";
// find the longest string that fits into
// the control boundaries using bisection method
while (seg > 1)
{
seg -= seg / 2;
int left = len + seg;
int right = mid.Length;
if (left > right)
continue;
if ((EllipsisFormat.Middle & options) == EllipsisFormat.Middle)
{
right -= left / 2;
left -= left / 2;
}
else if ((EllipsisFormat.Start & options) != 0)
{
right -= left;
left = 0;
}
// trim at a word boundary using regular expressions
if ((EllipsisFormat.Word & options) != 0)
{
if ((EllipsisFormat.End & options) != 0)
{
left -= _prevWord.Match(mid, 0, left).Length;
}
if ((EllipsisFormat.Start & options) != 0)
{
right += _nextWord.Match(mid, right).Length;
}
}
// build and measure a candidate string with ellipsis
var tst = mid.Substring(0, left) + EllipsisChars + mid.Substring(right);
// restore path with <drive> and <filename>
if (isPath)
{
tst = Path.Combine(Path.Combine(pre, tst), post);
}
//s = TextRenderer.MeasureText(dc, tst, ctrl.Font);
// candidate string fits into control boundaries, try a longer string
// stop when seg <= 1
if (tst.Length <= length)
{
len += seg;
fit = tst;
}
}
if (len == 0) // string can't fit into control
{
// "path" mode is off, just return ellipsis characters
if (!isPath)
return EllipsisChars;
// <drive> and <directory> are empty, return <filename>
if (pre.Length == 0 && mid.Length == 0)
return post;
// measure "C:\...\filename.ext"
fit = Path.Combine(Path.Combine(pre, EllipsisChars), post);
// if still not fit then return "...\filename.ext"
if (fit.Length > length)
fit = Path.Combine(EllipsisChars, post);
}
return fit;
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case WM_ENTERIDLE:
base.WndProc(ref m);
if (MSGF_MENU == (int)m.WParam)
{
MENUBARINFO mbi = new MENUBARINFO();
mbi.cbSize = Marshal.SizeOf(mbi);
GetMenuBarInfo(m.LParam, OBJID_CLIENT, 0, ref mbi);
if (GetMenuState(mbi.hMenu, WM_APP + 1, MF_BYCOMMAND) == -1)
{
IntPtr hSubMenu = CreatePopupMenu();
if (hSubMenu != IntPtr.Zero)
{
AppendMenu(hSubMenu, isChecked(EllipsisFormat.None), WM_NONE, "None");
AppendMenu(hSubMenu, isChecked(EllipsisFormat.Start), WM_LEFT, "Left");
AppendMenu(hSubMenu, isChecked(EllipsisFormat.End), WM_RIGHT, "Right");
AppendMenu(hSubMenu, isChecked(EllipsisFormat.Middle), WM_CENTER, "Center");
AppendMenu(hSubMenu, MF_SEPARATOR, 0, null);
AppendMenu(hSubMenu, isChecked(EllipsisFormat.Path), WM_PATH, "Path Ellipsis");
AppendMenu(hSubMenu, isChecked(EllipsisFormat.Word), WM_WORD, "Word Ellipsis");
AppendMenu(mbi.hMenu, MF_SEPARATOR, 0, null);
AppendMenu(mbi.hMenu, MF_POPUP, (uint)hSubMenu, "Auto Ellipsis");
}
}
}
break;
case WM_NONE:
AutoEllipsis = EllipsisFormat.None;
break;
case WM_LEFT:
AutoEllipsis = AutoEllipsis & ~EllipsisFormat.Middle | EllipsisFormat.Start;
break;
case WM_RIGHT:
AutoEllipsis = AutoEllipsis & ~EllipsisFormat.Middle | EllipsisFormat.End;
break;
case WM_CENTER:
AutoEllipsis |= EllipsisFormat.Middle;
break;
case WM_PATH:
if ((AutoEllipsis & EllipsisFormat.Path) == 0)
{
AutoEllipsis |= EllipsisFormat.Path;
}
else
{
AutoEllipsis &= ~EllipsisFormat.Path;
}
break;
case WM_WORD:
if ((AutoEllipsis & EllipsisFormat.Word) == 0)
{
AutoEllipsis |= EllipsisFormat.Word;
}
else
{
AutoEllipsis &= ~EllipsisFormat.Word;
}
break;
default:
base.WndProc(ref m);
break;
}
}