diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CLabel.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CLabel.java | 448 |
1 files changed, 0 insertions, 448 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CLabel.java b/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CLabel.java deleted file mode 100755 index 799891d8fa..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT Custom Widgets/common/org/eclipse/swt/custom/CLabel.java +++ /dev/null @@ -1,448 +0,0 @@ -package org.eclipse.swt.custom;
-
-/*
- * (c) Copyright IBM Corp. 2000, 2001.
- * All Rights Reserved
- */
-
-import org.eclipse.swt.*;
-import org.eclipse.swt.widgets.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.events.*;
-
-/**
- * A Label which supports aligned text and/or an image and different border styles.
- * <p>
- * If there is not enough space a SmartLabel uses the following strategy to fit the
- * information into the available space:
- * <pre>
- * ignores the indent in left align mode
- * ignores the image and the gap
- * shortens the text by replacing the center portion of the label with an ellipsis
- * shortens the text by removing the center portion of the label
- * </pre>
- * <p>
- * <dl>
- * <dt><b>Styles:</b>
- * <dd>SHADOW_IN, SHADOW_OUT, SHADOW_NONE</dd>
- * <dt><b>Events:</b>
- * <dd></dd>
- * </dl>
- */
-public class CLabel extends Canvas {
-
- /** Gap between icon and text */
- private static final int GAP = 5;
- /** Left and right margins */
- private static final int INDENT = 3;
- /** a string inserted in the middle of text that has been shortened */
- private static final String ellipsis = "...";
- /** the alignment. Either CENTER, RIGHT, LEFT. Default is LEFT*/
- private int align = SWT.LEFT;
- private int hIndent = INDENT;
- private int vIndent = INDENT;
- /** the current text */
- private String text;
- /** the current icon */
- private Image image;
- // The tooltip is used for two purposes - the application can set
- // a tooltip or the tooltip can be used to display the full text when the
- // the text has been truncated due to the label being too short.
- // The appToolTip stores the tooltip set by the application. Control.tooltiptext
- // contains whatever tooltip is currently being displayed.
- private String appToolTipText;
-
- private Image backgroundImage;
- private Color[] gradientColors;
- private int[] gradientPercents;
-
-
-/**
- * Create a CLabel with the given border style as a child of parent.
- */
-public CLabel(Composite parent, int style) {
- super(parent, checkStyle(style));
-
- if ((style & SWT.CENTER) != 0) align = SWT.CENTER;
- if ((style & SWT.RIGHT) != 0) align = SWT.RIGHT;
- if ((style & SWT.LEFT) != 0) align = SWT.LEFT;
-
- addPaintListener(new PaintListener(){
- public void paintControl(PaintEvent event) {
- onPaint(event);
- }
- });
-
- addDisposeListener(new DisposeListener(){
- public void widgetDisposed(DisposeEvent event) {
- onDispose(event);
- }
- });
-
-}
-/**
- * Check the style bits to ensure that no invalid styles are applied.
- */
-private static int checkStyle (int style) {
- int mask = SWT.SHADOW_IN | SWT.SHADOW_OUT | SWT.SHADOW_NONE;
- style = style & mask;
- style |= SWT.NO_FOCUS | SWT.NO_BACKGROUND;
- return style;
-}
-public Point computeSize(int wHint, int hHint, boolean changed) {
- Point e = getTotalSize(image, text);
- if (wHint == SWT.DEFAULT){
- e.x += 2*hIndent;
- } else {
- e.x = wHint;
- }
- if (hHint == SWT.DEFAULT) {
- e.y += 2*vIndent;
- } else {
- e.y = hHint;
- }
- return e;
-}
-/**
- * Draw a rectangle in the given colors.
- */
-private void drawBevelRect(GC gc, int x, int y, int w, int h, Color topleft, Color bottomright) {
- gc.setForeground(bottomright);
- gc.drawLine(x+w, y, x+w, y+h);
- gc.drawLine(x, y+h, x+w, y+h);
-
- gc.setForeground(topleft);
- gc.drawLine(x, y, x+w-1, y);
- gc.drawLine(x, y, x, y+h-1);
-}
-/**
- * Returns the alignment.
- * The alignment style (LEFT, CENTER or RIGHT) is returned.
- */
-public int getAlignment() {
- return align;
-}
-/**
- * Return the CLabel's image or <code>null</code>.
- */
-public Image getImage() {
- return image;
-}
-/**
- * Compute the minimum size.
- */
-private Point getTotalSize(Image image, String text) {
- Point size = new Point(0, 0);
-
- if (image != null) {
- Rectangle r = image.getBounds();
- size.x += r.width;
- size.y += r.height;
- }
-
- GC gc = new GC(this);
- if (text != null && text.length() > 0) {
- Point e = gc.textExtent(text);
- size.x += e.x;
- size.y = Math.max(size.y, e.y);
- if (image != null) size.x += GAP;
- } else {
- size.y = Math.max(size.y, gc.getFontMetrics().getHeight());
- }
- gc.dispose();
-
- return size;
-}
-public void setToolTipText (String string) {
- super.setToolTipText (string);
- appToolTipText = super.getToolTipText();
-}
-/**
- * Return the Label's text.
- */
-public String getText() {
- return text;
-}
-public String getToolTipText () {
- return appToolTipText;
-}
-/**
- * Paint the Label's border.
- */
-private void paintBorder(GC gc, Rectangle r) {
- Display disp= getDisplay();
-
- Color c1 = null;
- Color c2 = null;
-
- int style = getStyle();
- if ((style & SWT.SHADOW_IN) != 0) {
- c1 = disp.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
- c2 = disp.getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW);
- }
- if ((style & SWT.SHADOW_OUT) != 0) {
- c1 = disp.getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW);
- c2 = disp.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
- }
-
- if (c1 != null && c2 != null) {
- gc.setLineWidth(1);
- drawBevelRect(gc, r.x, r.y, r.width-1, r.height-1, c1, c2);
- }
-}
-private void onDispose(DisposeEvent event) {
- gradientColors = null;
- gradientPercents = null;
- backgroundImage = null;
-}
-/*
- * Process the paint event
- */
-private void onPaint(PaintEvent event) {
- Rectangle rect = getClientArea();
- if (rect.width == 0 || rect.height == 0) return;
-
- boolean shortenText = false;
- String t = text;
- Image img = image;
- int availableWidth = rect.width - 2*hIndent;
- Point extent = getTotalSize(img, t);
- if (extent.x > availableWidth) {
- img = null;
- extent = getTotalSize(img, t);
- if (extent.x > availableWidth) {
- shortenText = true;
- }
- }
-
- GC gc = event.gc;
-
- // shorten the text
- if (shortenText) {
- t = shortenText(gc, text, availableWidth);
- extent = getTotalSize(img, t);
- if (appToolTipText == null) {
- super.setToolTipText(text);
- }
- } else {
- super.setToolTipText(appToolTipText);
- }
-
- // determine horizontal position
- int x = rect.x + hIndent;
- if (align == SWT.CENTER) {
- x = (rect.width-extent.x)/2;
- }
- if (align == SWT.RIGHT) {
- x = rect.width-extent.x - hIndent;
- }
-
- // draw a background image behind the text
- try {
- if (backgroundImage != null) {
- // draw a background image behind the text
- Rectangle imageRect = backgroundImage.getBounds();
- gc.drawImage(backgroundImage, 0, 0, imageRect.width, imageRect.height,
- 0, 0, rect.width, rect.height);
- } else if (gradientColors != null) {
- // draw a gradient behind the text
- final Color oldBackground = gc.getBackground();
- if (gradientColors.length == 1) {
- if (gradientColors[0] != null) gc.setBackground(gradientColors[0]);
- gc.fillRectangle(0, 0, rect.width, rect.height);
- } else {
- final Color oldForeground = gc.getForeground();
- Color lastColor = gradientColors[0];
- if (lastColor == null) lastColor = oldBackground;
- for (int i = 0, pos = 0; i < gradientPercents.length; ++i) {
- gc.setForeground(lastColor);
- lastColor = gradientColors[i + 1];
- if (lastColor == null) lastColor = oldBackground;
- gc.setBackground(lastColor);
- final int gradientWidth = (gradientPercents[i] * rect.width / 100) - pos;
- gc.fillGradientRectangle(pos, 0, gradientWidth, rect.height, false);
- pos += gradientWidth;
- }
- gc.setForeground(oldForeground);
- }
- gc.setBackground(oldBackground);
- } else {
- gc.setBackground(getBackground());
- gc.fillRectangle(rect);
- }
- } catch (SWTException e) {
- gc.setBackground(getBackground());
- gc.fillRectangle(rect);
- }
-
- // draw border
- int style = getStyle();
- if ((style & SWT.SHADOW_IN) != 0 || (style & SWT.SHADOW_OUT) != 0) {
- paintBorder(gc, rect);
- }
- // draw the image
- if (img != null) {
- Rectangle imageRect = img.getBounds();
- gc.drawImage(img, 0, 0, imageRect.width, imageRect.height,
- x, (rect.height-imageRect.height)/2, imageRect.width, imageRect.height);
- x += imageRect.width + GAP;
- }
- // draw the text
- if (t != null) {
- int textHeight = gc.getFontMetrics().getHeight();
- gc.setForeground(getForeground());
- gc.drawText(t, x, rect.y + (rect.height-textHeight)/2, true);
- }
-}
-/**
- * Set the alignment of the CLabel.
- * Use the values LEFT, CENTER and RIGHT to align image and text within the available space.
- */
-public void setAlignment(int align) {
- if (align != SWT.LEFT && align != SWT.RIGHT && align != SWT.CENTER) {
- SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- }
- if (this.align != align) {
- this.align = align;
- redraw();
- }
-}
-/**
- * Specify a gradiant of colours to be draw in the background of the CLabel.
- * For example to draw a gradiant that varies from dark blue to blue and then to
- * white, use the following call to setBackground:
- * <pre>
- * clabel.setBackground(new Color[]{display.getSystemColor(SWT.COLOR_DARK_BLUE),
- * display.getSystemColor(SWT.COLOR_BLUE),
- * display.getSystemColor(SWT.COLOR_WHITE),
- * display.getSystemColor(SWT.COLOR_WHITE)},
- * new int[] {25, 50, 100});
- * </pre>
- *
- * @param colors an array of Color that specifies the colors to appear in the gradiant
- * in order of appearance left to right. The value <code>null</code> clears the
- * background gradiant. The value <code>null</code> can be used inside the array of
- * Color to specify the background color.
- * @param percents an array of integers between 0 and 100 specifying the percent of the width
- * of the widget at which the color should change. The size of the percents array must be one
- * less than the size of the colors array.
- */
-public void setBackground(Color[] colors, int[] percents) {
- if (colors != null) {
- if (percents == null || percents.length != colors.length - 1) {
- SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- }
- if (getDisplay().getDepth() < 15) {
- // Don't use gradients on low color displays
- colors = new Color[] { colors[0] };
- percents = new int[] { };
- }
- for (int i = 0; i < percents.length; i++) {
- if (percents[i] < 0 || percents[i] > 100) {
- SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- }
- if (i > 0 && percents[i] < percents[i-1]) {
- SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- }
- }
- }
-
- // Are these settings the same as before?
- final Color background = getBackground();
- if (backgroundImage == null) {
- if ((gradientColors != null) && (colors != null) &&
- (gradientColors.length == colors.length)) {
- boolean same = false;
- for (int i = 0; i < gradientColors.length; i++) {
- same = (gradientColors[i] == colors[i]) ||
- ((gradientColors[i] == null) && (colors[i] == background)) ||
- ((gradientColors[i] == background) && (colors[i] == null));
- if (!same) break;
- }
- if (same) {
- for (int i = 0; i < gradientPercents.length; i++) {
- same = gradientPercents[i] == percents[i];
- if (!same) break;
- }
- }
- if (same) return;
- }
- } else {
- backgroundImage = null;
- }
- // Store the new settings
- if (colors == null) {
- gradientColors = null;
- gradientPercents = null;
- } else {
- gradientColors = new Color[colors.length];
- for (int i = 0; i < colors.length; ++i)
- gradientColors[i] = (colors[i] != null) ? colors[i] : background;
- gradientPercents = new int[percents.length];
- for (int i = 0; i < percents.length; ++i)
- gradientPercents[i] = percents[i];
- }
- // Refresh with the new settings
- redraw();
-}
-public void setBackground(Image image) {
- if (image == backgroundImage) return;
- gradientColors = null;
- gradientPercents = null;
- backgroundImage = image;
- redraw();
-
-}
-public void setFont(Font font) {
- super.setFont(font);
- redraw();
-}
-/**
- * Set the label's Image.
- * The value <code>null</code> clears it.
- */
-public void setImage(Image image) {
- if (image != this.image) {
- this.image = image;
- redraw();
- }
-}
-/**
- * Set the label's text.
- * The value <code>null</code> clears it.
- */
-public void setText(String text) {
- if (text == null) text = "";
- if (! text.equals(this.text)) {
- this.text = text;
- redraw();
- }
-}
-/**
- * Shorten the given text <code>t</code> so that its length doesn't exceed
- * the given width. The default implementation replaces characters in the
- * center of the original string with an ellipsis ("...").
- * Override if you need a different strategy.
- */
-protected String shortenText(GC gc, String t, int width) {
- if (t == null) return null;
- int w = gc.textExtent(ellipsis).x;
- int l = t.length();
- int pivot = l/2;
- int s = pivot;
- int e = pivot+1;
- while (s >= 0 && e < l) {
- String s1 = t.substring(0, s);
- String s2 = t.substring(e, l);
- int l1 = gc.textExtent(s1).x;
- int l2 = gc.textExtent(s2).x;
- if (l1+w+l2 < width) {
- t = s1 + ellipsis + s2;
- break;
- }
- s--;
- e++;
- }
- return t;
-}
-}
|