void enableWidget(boolean enabled) {
if (OS.COMCTL32_MAJOR >= 6) {
LITEM item = new LITEM();
item.mask = OS.LIF_ITEMINDEX | OS.LIF_STATE;
item.stateMask = OS.LIS_ENABLED;
item.state = enabled ? OS.LIS_ENABLED : 0;
while (OS.SendMessage(handle, OS.LM_SETITEM, 0, item) != 0) {
item.iLink++;
}
} else {
TextStyle linkStyle = new TextStyle(null, enabled ? linkColor : disabledColor, null);
linkStyle.underline = true;
for (int i = 0; i < offsets.length; i++) {
Point point = offsets[i];
layout.setStyle(linkStyle, point.x, point.y);
}
redraw();
}
/*
* Feature in Windows. For some reason, setting
* LIS_ENABLED state using LM_SETITEM causes the
* SysLink to become enabled. To be specific,
* calling IsWindowEnabled() returns true. The
* fix is disable the SysLink after LM_SETITEM.
*/
super.enableWidget(enabled);
}
/**
* Sets the receiver's text.
*
* <p>The string can contain both regular text and hyperlinks. A hyperlink is delimited by an
* anchor tag, <A> and </A>. Within an anchor, a single HREF attribute is supported.
* When a hyperlink is selected, the text field of the selection event contains either the text of
* the hyperlink or the value of its HREF, if one was specified. In the rare case of identical
* hyperlinks within the same string, the HREF attribute can be used to distinguish between them.
* The string may include the mnemonic character and line delimiters. The only delimiter the HREF
* attribute supports is the quotation mark (").
*
* <p>Mnemonics are indicated by an '&' that causes the next character to be the mnemonic. The
* receiver can have a mnemonic in the text preceding each link. When the user presses a key
* sequence that matches the mnemonic, focus is assigned to the link that follows the text.
* Mnemonics in links and in the trailing text are ignored. On most platforms, the mnemonic
* appears underlined but may be emphasised in a platform specific manner. The mnemonic indicator
* character '&' can be escaped by doubling it in the string, causing a single '&' to be
* displayed.
*
* @param string the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the text is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(String string) {
checkWidget();
if (string == null) error(SWT.ERROR_NULL_ARGUMENT);
if (string.equals(text)) return;
text = string;
layout.setText(parse(string));
focusIndex = offsets.length > 0 ? 0 : -1;
selection.x = selection.y = -1;
boolean enabled = (state & DISABLED) == 0;
TextStyle linkStyle = new TextStyle(null, enabled ? linkColor : disabledColor, null);
linkStyle.underline = true;
int[] bidiSegments = new int[offsets.length * 2];
for (int i = 0; i < offsets.length; i++) {
Point point = offsets[i];
layout.setStyle(linkStyle, point.x, point.y);
bidiSegments[i * 2] = point.x;
bidiSegments[i * 2 + 1] = point.y + 1;
}
layout.setSegments(bidiSegments);
TextStyle mnemonicStyle = new TextStyle(null, null, null);
mnemonicStyle.underline = true;
for (int i = 0; i < mnemonics.length; i++) {
int mnemonic = mnemonics[i];
if (mnemonic != -1) {
layout.setStyle(mnemonicStyle, mnemonic, mnemonic);
}
}
redraw();
}
public void drawTextRun(
Canvas canvas,
float x,
float y,
int lineOffset,
int runWidth,
char[] text,
int index,
int count,
boolean cursor,
int textStyle) {
int foreColor = TextStyle.decodeForeColor(textStyle);
int backColor = TextStyle.decodeBackColor(textStyle);
int effect = TextStyle.decodeEffect(textStyle);
boolean inverse = mReverseVideo ^ (effect & (TextStyle.fxInverse | TextStyle.fxItalic)) != 0;
if (inverse) {
int temp = foreColor;
foreColor = backColor;
backColor = temp;
}
if (cursor) {
backColor = TextStyle.ciCursor;
}
boolean blink = (effect & TextStyle.fxBlink) != 0;
if (blink && backColor < 8) {
backColor += 8;
}
mTextPaint.setColor(mPalette[backColor]);
float left = x + lineOffset * mCharWidth;
canvas.drawRect(
left, y + mCharAscent - mCharDescent, left + runWidth * mCharWidth, y, mTextPaint);
boolean invisible = (effect & TextStyle.fxInvisible) != 0;
if (!invisible) {
boolean bold = (effect & TextStyle.fxBold) != 0;
boolean underline = (effect & TextStyle.fxUnderline) != 0;
if (bold) {
mTextPaint.setFakeBoldText(true);
}
if (underline) {
mTextPaint.setUnderlineText(true);
}
if (foreColor < 8 && bold) {
// In 16-color mode, bold also implies bright foreground colors
mTextPaint.setColor(mPalette[foreColor + 8]);
} else {
mTextPaint.setColor(mPalette[foreColor]);
}
canvas.drawText(text, index, count, left, y - mCharDescent, mTextPaint);
if (bold) {
mTextPaint.setFakeBoldText(false);
}
if (underline) {
mTextPaint.setUnderlineText(false);
}
}
}
protected Font getFontToDisplay(char c, TextStyle style) {
boolean bold = style.hasOption(TextStyle.Option.BOLD);
boolean italic = style.hasOption(TextStyle.Option.ITALIC);
// workaround to fix Swing bad rendering of bold special chars on Linux
if (bold && mySettingsProvider.DECCompatibilityMode() && CharacterSets.isDecBoxChar(c)) {
return myNormalFont;
}
return bold ? (italic ? myBoldItalicFont : myBoldFont) : (italic ? myItalicFont : myNormalFont);
}
/**
* Draw every char in separate terminal cell to guaranty equal width for different lines.
* Nevertheless to improve kerning we draw word characters as one block for monospaced fonts.
*/
private void drawChars(int x, int y, CharBuffer buf, TextStyle style, Graphics2D gfx) {
final int blockLen = 1;
int offset = 0;
int drawCharsOffset = 0;
// workaround to fix Swing bad rendering of bold special chars on Linux
// TODO required for italic?
CharBuffer renderingBuffer;
if (mySettingsProvider.DECCompatibilityMode() && style.hasOption(TextStyle.Option.BOLD)) {
renderingBuffer = CharUtils.heavyDecCompatibleBuffer(buf);
} else {
renderingBuffer = buf;
}
while (offset + blockLen <= buf.length()) {
if (renderingBuffer.getBuf()[buf.getStart() + offset] == CharUtils.DWC) {
offset += blockLen;
drawCharsOffset += blockLen;
continue; // dont' draw second part(fake one) of double width character
}
Font font = getFontToDisplay(buf.charAt(offset + blockLen - 1), style);
// while (myMonospaced && (offset + blockLen < buf.getLength()) &&
// isWordCharacter(buf.charAt(offset + blockLen - 1))
// && (font == getFontToDisplay(buf.charAt(offset + blockLen - 1), style))) {
// blockLen++;
// }
gfx.setFont(font);
int descent = gfx.getFontMetrics(font).getDescent();
int baseLine = (y + 1) * myCharSize.height - descent;
int xCoord = (x + drawCharsOffset) * myCharSize.width;
int textLength =
CharUtils.getTextLengthDoubleWidthAware(
buf.getBuf(),
buf.getStart() + offset,
blockLen,
mySettingsProvider.ambiguousCharsAreDoubleWidth());
int yCoord = y * myCharSize.height;
gfx.setClip(
xCoord,
yCoord,
Math.min(textLength * myCharSize.width, getWidth() - xCoord),
Math.min(myCharSize.height, getHeight() - yCoord));
gfx.setColor(getPalette().getColor(myStyleState.getForeground(style.getForegroundForRun())));
gfx.drawChars(renderingBuffer.getBuf(), buf.getStart() + offset, blockLen, xCoord, baseLine);
drawCharsOffset += blockLen;
offset += blockLen;
}
gfx.setClip(null);
}
private void setDefaults() {
setBackgroundColor(Color.BLUE);
setBorderBehavior(BorderBehavior.NONE);
TextStyle titleStyle = TextStyle.sansSerif();
titleStyle.setFontSize(40);
setTitleStyle(titleStyle);
setCounterStyle(TextStyle.sansSerif());
setSubtitleStyle(TextStyle.sansSerif());
}
@Override
void enableWidget(boolean enabled) {
super.enableWidget(enabled);
if (isDisposed()) return;
TextStyle linkStyle = new TextStyle(null, enabled ? linkColor : disabledColor, null);
linkStyle.underline = true;
for (int i = 0; i < offsets.length; i++) {
Point point = offsets[i];
layout.setStyle(linkStyle, point.x, point.y);
}
redraw();
}
/**
* Sets the receiver's text.
*
* <p>The string can contain both regular text and hyperlinks. A hyperlink is delimited by an
* anchor tag, <A> and </A>. Within an anchor, a single HREF attribute is supported.
* When a hyperlink is selected, the text field of the selection event contains either the text of
* the hyperlink or the value of its HREF, if one was specified. In the rare case of identical
* hyperlinks within the same string, the HREF attribute can be used to distinguish between them.
* The string may include the mnemonic character and line delimiters. The only delimiter the HREF
* attribute supports is the quotation mark (").
*
* <p>Mnemonics are indicated by an '&' that causes the next character to be the mnemonic. The
* receiver can have a mnemonic in the text preceding each link. When the user presses a key
* sequence that matches the mnemonic, focus is assigned to the link that follows the text.
* Mnemonics in links and in the trailing text are ignored. On most platforms, the mnemonic
* appears underlined but may be emphasised in a platform specific manner. The mnemonic indicator
* character '&' can be escaped by doubling it in the string, causing a single '&' to be
* displayed.
*
* @param string the new text
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the text is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setText(String string) {
checkWidget();
if (string == null) error(SWT.ERROR_NULL_ARGUMENT);
if (string.equals(text)) return;
text = string;
if (OS.COMCTL32_MAJOR >= 6) {
boolean enabled = OS.IsWindowEnabled(handle);
/*
* Bug in Windows. For some reason, when SetWindowText()
* is used to set the text of a link control to the empty
* string, the old text remains. The fix is to set the
* text to a space instead.
*/
if (string.length() == 0) string = " "; // $NON-NLS-1$
TCHAR buffer = new TCHAR(getCodePage(), string, true);
OS.SetWindowText(handle, buffer);
parse(text);
enableWidget(enabled);
} else {
layout.setText(parse(text));
focusIndex = offsets.length > 0 ? 0 : -1;
selection.x = selection.y = -1;
int bits = OS.GetWindowLong(handle, OS.GWL_STYLE);
if (offsets.length > 0) {
bits |= OS.WS_TABSTOP;
} else {
bits &= ~OS.WS_TABSTOP;
}
OS.SetWindowLong(handle, OS.GWL_STYLE, bits);
boolean enabled = OS.IsWindowEnabled(handle);
TextStyle linkStyle = new TextStyle(null, enabled ? linkColor : disabledColor, null);
linkStyle.underline = true;
for (int i = 0; i < offsets.length; i++) {
Point point = offsets[i];
layout.setStyle(linkStyle, point.x, point.y);
}
TextStyle mnemonicStyle = new TextStyle(null, null, null);
mnemonicStyle.underline = true;
for (int i = 0; i < mnemonics.length; i++) {
int mnemonic = mnemonics[i];
if (mnemonic != -1) {
layout.setStyle(mnemonicStyle, mnemonic, mnemonic);
}
}
redraw();
}
}
void renderSubtitle(Graphics2D g) {
subtitleDuration--;
subtitleStyle.renderString(
subtitle,
new Point(WIDTH / 2.0, 30),
TextStyle.ReferencePointLocation.BOTTOM_CENTER,
g,
null);
}
void renderTitle(Graphics2D g) {
titleDuration--;
titleStyle.renderString(
title,
new Point(WIDTH / 2.0, HEIGHT / 2.0),
TextStyle.ReferencePointLocation.CENTER,
g,
null);
}
private String css(String name, TextStyle style) {
StringBuffer result = new StringBuffer();
result.append(".");
result.append(name);
result.append(" {\n");
result.append(style.toCSS());
result.append("\n}\n");
return result.toString();
}
private TextStyle getInversedStyle(TextStyle style) {
TextStyle selectionStyle;
selectionStyle = style.clone();
selectionStyle.setOption(Option.INVERSE, !selectionStyle.hasOption(Option.INVERSE));
if (selectionStyle.getForeground() == null) {
selectionStyle.setForeground(myStyleState.getForeground());
}
if (selectionStyle.getBackground() == null) {
selectionStyle.setBackground(myStyleState.getBackground());
}
return selectionStyle;
}
private TextStyle getSelectionStyle(TextStyle style) {
TextStyle selectionStyle = style.clone();
if (mySettingsProvider.useInverseSelectionColor()) {
selectionStyle = getInversedStyle(style);
} else {
TextStyle mySelectionStyle = mySettingsProvider.getSelectionColor();
selectionStyle.setBackground(mySelectionStyle.getBackground());
selectionStyle.setForeground(mySelectionStyle.getForeground());
}
return selectionStyle;
}
private void drawCharacters(int x, int y, TextStyle style, CharBuffer buf, Graphics2D gfx) {
int xCoord = x * myCharSize.width;
int yCoord = y * myCharSize.height;
if (xCoord < 0 || xCoord > getWidth() || yCoord < 0 || yCoord > getHeight()) {
return;
}
gfx.setColor(getPalette().getColor(myStyleState.getBackground(style.getBackgroundForRun())));
int textLength =
CharUtils.getTextLengthDoubleWidthAware(
buf.getBuf(),
buf.getStart(),
buf.length(),
mySettingsProvider.ambiguousCharsAreDoubleWidth());
gfx.fillRect(
xCoord,
yCoord,
Math.min(textLength * myCharSize.width, getWidth() - xCoord),
Math.min(myCharSize.height, getHeight() - yCoord));
if (buf.isNul()) {
return; // nothing more to do
}
drawChars(x, y, buf, style, gfx);
gfx.setColor(getPalette().getColor(myStyleState.getForeground(style.getForegroundForRun())));
int baseLine = (y + 1) * myCharSize.height - myDescent;
if (style.hasOption(TextStyle.Option.UNDERLINED)) {
gfx.drawLine(xCoord, baseLine + 1, (x + textLength) * myCharSize.width, baseLine + 1);
}
}
private void completeStyles() {
if (protectedNormalStyle == null) protectedNormalStyle = new TextStyle("black", "white");
if (protectedIntensifiedStyle == null)
protectedIntensifiedStyle = new TextStyle(protectedNormalStyle);
else protectedIntensifiedStyle.completeFrom(protectedNormalStyle);
if (protectedHiddenStyle == null) {
protectedHiddenStyle = new TextStyle(protectedNormalStyle);
protectedHiddenStyle.foregroundColor = protectedHiddenStyle.backgroundColor;
} else {
protectedHiddenStyle.completeFrom(protectedNormalStyle);
}
if (unprotectedNormalStyle == null)
unprotectedNormalStyle = new TextStyle("black", "lightgrey");
if (unprotectedIntensifiedStyle == null)
unprotectedIntensifiedStyle = new TextStyle(unprotectedNormalStyle);
else unprotectedIntensifiedStyle.completeFrom(unprotectedNormalStyle);
if (unprotectedHiddenStyle == null)
unprotectedHiddenStyle = new TextStyle(unprotectedNormalStyle);
}
private String extendedHighlightCSS() {
StringBuffer result = new StringBuffer();
result.append(".h3270-highlight-blink {\n");
result.append(" text-decoration:blink;\n");
result.append("}\n");
result.append(".h3270-highlight-underscore {\n");
result.append(" text-decoration:underline;\n");
result.append("}\n");
result.append(".h3270-highlight-rev-video {\n");
// the following is not quite correct, because "reverse video"
// should reverse the style that would otherwise be effective
// in a given field, not just the "normal" style, but we'll
// leave it at this for now
result.append(protectedNormalStyle.reverse().toCSS());
result.append("}\n");
return result.toString();
}
public void drawCursor(char c, Graphics2D gfx, TextStyle style) {
TerminalCursorState state = computeCursorState();
// hidden: do nothing
if (state == TerminalCursorState.HIDDEN) {
return;
} else {
final int x = getCoordX();
final int y = getCoordY();
if (y >= 0 && y < myTermSize.height) {
if (state == TerminalCursorState.SHOWING) {
TextStyle styleToDraw = getInversedStyle(style);
drawCharacters(x, y, styleToDraw, new CharBuffer(c, 1), gfx);
} else if (state == TerminalCursorState.NO_FOCUS) {
int xCoord = x * myCharSize.width;
int yCoord = y * myCharSize.height;
gfx.setColor(
getPalette().getColor(myStyleState.getForeground(style.getForegroundForRun())));
gfx.drawRect(xCoord, yCoord, myCharSize.width - 1, myCharSize.height - 1);
}
}
}
}
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display, SWT.SHELL_TRIM | SWT.DOUBLE_BUFFERED);
shell.setText("Underline, Strike Out");
Font font = shell.getFont();
String text = "Here is some text that is underlined or struck out or both.";
final TextLayout layout = new TextLayout(display);
layout.setText(text);
TextStyle style1 = new TextStyle(font, null, null);
style1.underline = true;
layout.setStyle(style1, 26, 35);
TextStyle style2 = new TextStyle(font, null, null);
style2.strikeout = true;
layout.setStyle(style2, 40, 49);
TextStyle style3 = new TextStyle(font, null, null);
style3.underline = true;
style3.strikeout = true;
layout.setStyle(style3, 54, 57);
shell.addListener(
SWT.Paint,
new Listener() {
@Override
public void handleEvent(Event event) {
Point point = new Point(10, 10);
int width = shell.getClientArea().width - 2 * point.x;
layout.setWidth(width);
layout.draw(event.gc, point.x, point.y);
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
layout.dispose();
display.dispose();
}
