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/******************************************************************************* |
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/******************************************************************************* |
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* Copyright (c) 2000, 2010 IBM Corporation and others. |
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* Copyright (c) 2000, 2012 IBM Corporation and others. |
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* All rights reserved. This program and the accompanying materials |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* which accompanies this distribution, and is available at |
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Lines 50-56
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/** Left and right margins */ |
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/** Left and right margins */ |
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private static final int DEFAULT_MARGIN = 3; |
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private static final int DEFAULT_MARGIN = 3; |
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/** a string inserted in the middle of text that has been shortened */ |
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/** a string inserted in the middle of text that has been shortened */ |
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private static final String ELLIPSIS = "..."; //$NON-NLS-1$ // could use the ellipsis glyph on some platforms "\u2026" |
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private static final String DEFAULT_ELLIPSIS = "..."; //$NON-NLS-1$ // could use the ellipsis glyph on some platforms "\u2026" |
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/** the alignment. Either CENTER, RIGHT, LEFT. Default is LEFT*/ |
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/** the alignment. Either CENTER, RIGHT, LEFT. Default is LEFT*/ |
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private int align = SWT.LEFT; |
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private int align = SWT.LEFT; |
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private int leftMargin = DEFAULT_MARGIN; |
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private int leftMargin = DEFAULT_MARGIN; |
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Lines 75-80
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private boolean gradientVertical; |
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private boolean gradientVertical; |
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private Color background; |
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private Color background; |
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private String ellipsis = DEFAULT_ELLIPSIS; |
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private int ellipsisAlign = SWT.CENTER; |
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private static int DRAW_FLAGS = SWT.DRAW_MNEMONIC | SWT.DRAW_TAB | SWT.DRAW_TRANSPARENT | SWT.DRAW_DELIMITER; |
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private static int DRAW_FLAGS = SWT.DRAW_MNEMONIC | SWT.DRAW_TAB | SWT.DRAW_TRANSPARENT | SWT.DRAW_DELIMITER; |
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/** |
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/** |
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Lines 222-227
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return bottomMargin; |
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return bottomMargin; |
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} |
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} |
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/** |
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/** |
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* Return the CLabel's ellipsis. |
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* |
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* @return the current ellipsis |
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* |
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* @since TDB |
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*/ |
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public String getEllipsis() { |
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return ellipsis; |
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} |
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/** |
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* Return the CLabel's ellipsis alignment. |
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* |
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* @return the current ellipsis alignment |
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* |
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* @since TDB |
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*/ |
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public int getEllipsisAligment() { |
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return ellipsisAlign; |
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} |
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/** |
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* Return the CLabel's image or <code>null</code>. |
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* Return the CLabel's image or <code>null</code>. |
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* |
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* |
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* @return the image of the label or null |
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* @return the image of the label or null |
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Lines 800-805
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this.bottomMargin = bottomMargin; |
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this.bottomMargin = bottomMargin; |
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redraw(); |
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redraw(); |
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} |
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} |
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/** |
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* Set the label's ellipsis |
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* |
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* @param ellipsis the ellipsis to use instead of the {@link #DEFAULT_ELLIPSIS} |
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* |
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* @exception SWTException <ul> |
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* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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* <li>ERROR_INVALID_ARGUMENT - if the value of align is not one of SWT.LEFT, SWT.RIGHT or SWT.CENTER</li> |
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* </ul> |
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* |
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* @since TBD |
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*/ |
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public void setEllipsis (String ellipsis) { |
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checkWidget (); |
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this.ellipsis = ellipsis; |
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redraw(); |
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} |
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/** |
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* Set the alignment of the ellipsis. |
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* <p>Use the values LEFT, CENTER, RIGHT, BEGINNING or END to align the ellipsis in the text.</p> |
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* <p>BEGINNING and END are mapped to LEFT and RIGHT according to the current LEFT_TO_RIGHT and RIGHT_TO_LEFT style.</p> |
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* |
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* @param align the alignment style of LEFT, RIGHT, CENTER, BEGINNING or END |
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* |
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* @exception SWTException <ul> |
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* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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* <li>ERROR_INVALID_ARGUMENT - if the value of align is not one of SWT.LEFT, SWT.RIGHT or SWT.CENTER</li> |
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* </ul> |
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* |
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* @since TBD |
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*/ |
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public void setEllipsisAlignment(int ellipsisAlign) { |
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checkWidget(); |
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if (ellipsisAlign != SWT.LEFT && ellipsisAlign != SWT.RIGHT && ellipsisAlign != SWT.CENTER && ellipsisAlign != SWT.BEGINNING && ellipsisAlign != SWT.END) { |
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SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
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} |
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// correct left/right |
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if ( ellipsisAlign == SWT.BEGINNING ) { |
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ellipsisAlign = ( getStyle () & SWT.RIGHT_TO_LEFT ) != 0 ? SWT.RIGHT : SWT.LEFT; |
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} |
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else if ( ellipsisAlign == SWT.END ) { |
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ellipsisAlign = ( getStyle () & SWT.RIGHT_TO_LEFT ) != 0 ? SWT.LEFT : SWT.RIGHT; |
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} |
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if (this.ellipsisAlign != ellipsisAlign) { |
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this.ellipsisAlign = ellipsisAlign; |
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redraw(); |
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} |
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} |
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public void setFont(Font font) { |
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public void setFont(Font font) { |
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super.setFont(font); |
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super.setFont(font); |
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redraw(); |
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redraw(); |
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Lines 944-983
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*/ |
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*/ |
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protected String shortenText(GC gc, String t, int width) { |
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protected String shortenText(GC gc, String t, int width) { |
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if (t == null) return null; |
1021 |
if (t == null) return null; |
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int w = gc.textExtent(ELLIPSIS, DRAW_FLAGS).x; |
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int w = gc.textExtent(this.ellipsis, DRAW_FLAGS).x; |
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if (width<=w) return t; |
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if (width<=w) return t; |
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int l = t.length(); |
1024 |
switch ( ellipsisAlign ) { |
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int max = l/2; |
1025 |
case SWT.LEFT: |
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int min = 0; |
1026 |
return beginShortenText(gc, t, width, w); |
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int mid = (max+min)/2 - 1; |
1027 |
case SWT.RIGHT: |
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if (mid <= 0) return t; |
1028 |
return endShortenText(gc, t, width, w); |
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TextLayout layout = new TextLayout (getDisplay()); |
1029 |
case SWT.CENTER: |
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layout.setText(t); |
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//$FALL-THROUGH$ |
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mid = validateOffset(layout, mid); |
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default: |
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while (min < mid && mid < max) { |
1032 |
return centerShortenText(gc, t, width, w); |
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String s1 = t.substring(0, mid); |
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} |
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String s2 = t.substring(validateOffset(layout, l-mid), l); |
1034 |
} |
| 960 |
int l1 = gc.textExtent(s1, DRAW_FLAGS).x; |
1035 |
protected String beginShortenText(GC gc, String t, int width, int w) { |
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int l2 = gc.textExtent(s2, DRAW_FLAGS).x; |
1036 |
TextLayout layout = new TextLayout (getDisplay()); |
| 962 |
if (l1+w+l2 > width) { |
1037 |
layout.setText(t); |
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max = mid; |
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| 964 |
mid = validateOffset(layout, (max+min)/2); |
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String result = t; |
| 965 |
} else if (l1+w+l2 < width) { |
1040 |
int len = gc.textExtent(result, DRAW_FLAGS).x; |
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min = mid; |
1041 |
while ( len + w > width && result.length () > 0 ) { |
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mid = validateOffset(layout, (max+min)/2); |
1042 |
result = result.substring ( validateOffsetInverse ( layout, 1 ) ); |
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} else { |
1043 |
len = gc.textExtent(result, DRAW_FLAGS).x; |
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min = max; |
1044 |
} |
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} |
1045 |
layout.dispose(); |
| 971 |
} |
1046 |
return ellipsis + result; |
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String result = mid == 0 ? t : t.substring(0, mid) + ELLIPSIS + t.substring(validateOffset(layout, l-mid), l); |
1047 |
} |
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layout.dispose(); |
1048 |
protected String endShortenText(GC gc, String t, int width, int w) { |
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return result; |
1049 |
TextLayout layout = new TextLayout (getDisplay()); |
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layout.setText(t); |
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String result = t; |
| 1053 |
int len = gc.textExtent(result, DRAW_FLAGS).x; |
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while ( len + w > width && result.length () > 0 ) { |
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result = result.substring ( 0, validateOffset ( layout, result.length () - 1 ) ); |
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len = gc.textExtent(result, DRAW_FLAGS).x; |
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} |
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layout.dispose(); |
| 1059 |
return result + ellipsis; |
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} |
| 1061 |
protected String centerShortenText(GC gc, String t, int width, int w) { |
| 1062 |
int l = t.length(); |
| 1063 |
int max = l/2; |
| 1064 |
int min = 0; |
| 1065 |
int mid = (max+min)/2 - 1; |
| 1066 |
if (mid <= 0) return t; |
| 1067 |
TextLayout layout = new TextLayout (getDisplay()); |
| 1068 |
layout.setText(t); |
| 1069 |
mid = validateOffset(layout, mid); |
| 1070 |
while (min < mid && mid < max) { |
| 1071 |
String s1 = t.substring(0, mid); |
| 1072 |
String s2 = t.substring(validateOffset(layout, l-mid), l); |
| 1073 |
int l1 = gc.textExtent(s1, DRAW_FLAGS).x; |
| 1074 |
int l2 = gc.textExtent(s2, DRAW_FLAGS).x; |
| 1075 |
if (l1+w+l2 > width) { |
| 1076 |
max = mid; |
| 1077 |
mid = validateOffset(layout, (max+min)/2); |
| 1078 |
} else if (l1+w+l2 < width) { |
| 1079 |
min = mid; |
| 1080 |
mid = validateOffset(layout, (max+min)/2); |
| 1081 |
} else { |
| 1082 |
min = max; |
| 1083 |
} |
| 1084 |
} |
| 1085 |
String result = mid == 0 ? t : t.substring(0, mid) + this.ellipsis + t.substring(validateOffset(layout, l-mid), l); |
| 1086 |
layout.dispose(); |
| 1087 |
return result; |
| 975 |
} |
1088 |
} |
| 976 |
int validateOffset(TextLayout layout, int offset) { |
1089 |
int validateOffset(TextLayout layout, int offset) { |
| 977 |
int nextOffset = layout.getNextOffset(offset, SWT.MOVEMENT_CLUSTER); |
1090 |
int nextOffset = layout.getNextOffset(offset, SWT.MOVEMENT_CLUSTER); |
| 978 |
if (nextOffset != offset) return layout.getPreviousOffset(nextOffset, SWT.MOVEMENT_CLUSTER); |
1091 |
if (nextOffset != offset) return layout.getPreviousOffset(nextOffset, SWT.MOVEMENT_CLUSTER); |
| 979 |
return offset; |
1092 |
return offset; |
| 980 |
} |
1093 |
} |
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1094 |
int validateOffsetInverse(TextLayout layout, int offset) { |
| 1095 |
int previousOffset = layout.getPreviousOffset(offset, SWT.MOVEMENT_CLUSTER); |
| 1096 |
if (previousOffset != offset) return layout.getNextOffset(previousOffset, SWT.MOVEMENT_CLUSTER); |
| 1097 |
return offset; |
| 1098 |
} |
| 981 |
private String[] splitString(String text) { |
1099 |
private String[] splitString(String text) { |
| 982 |
String[] lines = new String[1]; |
1100 |
String[] lines = new String[1]; |
| 983 |
int start = 0, pos; |
1101 |
int start = 0, pos; |
