| /******************************************************************************* |
| * Copyright (c) 2000, 2007 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.custom; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * Instances of this class represent a selectable user interface object |
| * that represent a page in a notebook widget. |
| * |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>SWT.CLOSE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>(none)</dd> |
| * </dl> |
| * <p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| */ |
| public class CTabItem extends Item { |
| CTabFolder parent; |
| int x,y,width,height = 0; |
| Control control; // the tab page |
| |
| String toolTipText; |
| String shortenedText; |
| int shortenedTextWidth; |
| |
| // Appearance |
| Font font; |
| Image disabledImage; |
| |
| Rectangle closeRect = new Rectangle(0, 0, 0, 0); |
| int closeImageState = CTabFolder.NONE; |
| boolean showClose = false; |
| boolean showing = false; |
| |
| // internal constants |
| static final int TOP_MARGIN = 2; |
| static final int BOTTOM_MARGIN = 2; |
| static final int LEFT_MARGIN = 4; |
| static final int RIGHT_MARGIN = 4; |
| static final int INTERNAL_SPACING = 4; |
| static final int FLAGS = SWT.DRAW_TRANSPARENT | SWT.DRAW_MNEMONIC; |
| static final String ELLIPSIS = "..."; //$NON-NLS-1$ // could use the ellipsis glyph on some platforms "\u2026" |
| |
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>CTabFolder</code>) and a style value |
| * describing its behavior and appearance. The item is added |
| * to the end of the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a CTabFolder which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#getStyle() |
| */ |
| public CTabItem (CTabFolder parent, int style) { |
| this(parent, style, parent.getItemCount()); |
| } |
| /** |
| * Constructs a new instance of this class given its parent |
| * (which must be a <code>CTabFolder</code>), a style value |
| * describing its behavior and appearance, and the index |
| * at which to place it in the items maintained by its parent. |
| * <p> |
| * The style value is either one of the style constants defined in |
| * class <code>SWT</code> which is applicable to instances of this |
| * class, or must be built by <em>bitwise OR</em>'ing together |
| * (that is, using the <code>int</code> "|" operator) two or more |
| * of those <code>SWT</code> style constants. The class description |
| * lists the style constants that are applicable to the class. |
| * Style bits are also inherited from superclasses. |
| * </p> |
| * |
| * @param parent a CTabFolder which will be the parent of the new instance (cannot be null) |
| * @param style the style of control to construct |
| * @param index the zero-relative index to store the receiver in its parent |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> |
| * </ul> |
| * |
| * @see SWT |
| * @see Widget#getStyle() |
| */ |
| public CTabItem (CTabFolder parent, int style, int index) { |
| super (parent, style); |
| showClose = (style & SWT.CLOSE) != 0; |
| parent.createItem (this, index); |
| } |
| |
| /* |
| * Return whether to use ellipses or just truncate labels |
| */ |
| boolean useEllipses() { |
| return parent.simple; |
| } |
| |
| String shortenText(GC gc, String text, int width) { |
| return useEllipses() |
| ? shortenText(gc, text, width, ELLIPSIS) |
| : shortenText(gc, text, width, ""); //$NON-NLS-1$ |
| } |
| |
| String shortenText(GC gc, String text, int width, String ellipses) { |
| if (gc.textExtent(text, FLAGS).x <= width) return text; |
| int ellipseWidth = gc.textExtent(ellipses, FLAGS).x; |
| int length = text.length(); |
| TextLayout layout = new TextLayout(getDisplay()); |
| layout.setText(text); |
| int end = layout.getPreviousOffset(length, SWT.MOVEMENT_CLUSTER); |
| while (end > 0) { |
| text = text.substring(0, end); |
| int l = gc.textExtent(text, FLAGS).x; |
| if (l + ellipseWidth <= width) { |
| break; |
| } |
| end = layout.getPreviousOffset(end, SWT.MOVEMENT_CLUSTER); |
| } |
| layout.dispose(); |
| return end == 0 ? text.substring(0, 1) : text + ellipses; |
| } |
| |
| public void dispose() { |
| if (isDisposed ()) return; |
| //if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| parent.destroyItem(this); |
| super.dispose(); |
| parent = null; |
| control = null; |
| toolTipText = null; |
| shortenedText = null; |
| font = null; |
| } |
| void drawClose(GC gc) { |
| if (closeRect.width == 0 || closeRect.height == 0) return; |
| Display display = getDisplay(); |
| |
| // draw X 9x9 |
| int indent = Math.max(1, (CTabFolder.BUTTON_SIZE-9)/2); |
| int x = closeRect.x + indent; |
| int y = closeRect.y + indent; |
| y += parent.onBottom ? -1 : 1; |
| |
| Color closeBorder = display.getSystemColor(CTabFolder.BUTTON_BORDER); |
| switch (closeImageState) { |
| case CTabFolder.NORMAL: { |
| int[] shape = new int[] {x,y, x+2,y, x+4,y+2, x+5,y+2, x+7,y, x+9,y, |
| x+9,y+2, x+7,y+4, x+7,y+5, x+9,y+7, x+9,y+9, |
| x+7,y+9, x+5,y+7, x+4,y+7, x+2,y+9, x,y+9, |
| x,y+7, x+2,y+5, x+2,y+4, x,y+2}; |
| gc.setBackground(display.getSystemColor(CTabFolder.BUTTON_FILL)); |
| gc.fillPolygon(shape); |
| gc.setForeground(closeBorder); |
| gc.drawPolygon(shape); |
| break; |
| } |
| case CTabFolder.HOT: { |
| int[] shape = new int[] {x,y, x+2,y, x+4,y+2, x+5,y+2, x+7,y, x+9,y, |
| x+9,y+2, x+7,y+4, x+7,y+5, x+9,y+7, x+9,y+9, |
| x+7,y+9, x+5,y+7, x+4,y+7, x+2,y+9, x,y+9, |
| x,y+7, x+2,y+5, x+2,y+4, x,y+2}; |
| Color fill = new Color(display, CTabFolder.CLOSE_FILL); |
| gc.setBackground(fill); |
| gc.fillPolygon(shape); |
| fill.dispose(); |
| gc.setForeground(closeBorder); |
| gc.drawPolygon(shape); |
| break; |
| } |
| case CTabFolder.SELECTED: { |
| int[] shape = new int[] {x+1,y+1, x+3,y+1, x+5,y+3, x+6,y+3, x+8,y+1, x+10,y+1, |
| x+10,y+3, x+8,y+5, x+8,y+6, x+10,y+8, x+10,y+10, |
| x+8,y+10, x+6,y+8, x+5,y+8, x+3,y+10, x+1,y+10, |
| x+1,y+8, x+3,y+6, x+3,y+5, x+1,y+3}; |
| Color fill = new Color(display, CTabFolder.CLOSE_FILL); |
| gc.setBackground(fill); |
| gc.fillPolygon(shape); |
| fill.dispose(); |
| gc.setForeground(closeBorder); |
| gc.drawPolygon(shape); |
| break; |
| } |
| case CTabFolder.NONE: { |
| int[] shape = new int[] {x,y, x+10,y, x+10,y+10, x,y+10}; |
| if (parent.gradientColors != null && !parent.gradientVertical) { |
| parent.drawBackground(gc, shape, false); |
| } else { |
| Color defaultBackground = parent.getBackground(); |
| Image image = parent.bgImage; |
| Color[] colors = parent.gradientColors; |
| int[] percents = parent.gradientPercents; |
| boolean vertical = parent.gradientVertical; |
| parent.drawBackground(gc, shape, x, y, 10, 10, defaultBackground, image, colors, percents, vertical); |
| } |
| break; |
| } |
| } |
| } |
| void drawSelected(GC gc ) { |
| Point size = parent.getSize(); |
| int rightEdge = Math.min (x + width, parent.getRightItemEdge()); |
| |
| // Draw selection border across all tabs |
| int xx = parent.borderLeft; |
| int yy = parent.onBottom ? size.y - parent.borderBottom - parent.tabHeight - parent.highlight_header : parent.borderTop + parent.tabHeight + 1; |
| int ww = size.x - parent.borderLeft - parent.borderRight; |
| int hh = parent.highlight_header - 1; |
| int[] shape = new int[] {xx,yy, xx+ww,yy, xx+ww,yy+hh, xx,yy+hh}; |
| if (parent.selectionGradientColors != null && !parent.selectionGradientVertical) { |
| parent.drawBackground(gc, shape, true); |
| } else { |
| gc.setBackground(parent.selectionBackground); |
| gc.fillRectangle(xx, yy, ww, hh); |
| } |
| |
| if (parent.single) { |
| if (!showing) return; |
| } else { |
| // if selected tab scrolled out of view or partially out of view |
| // just draw bottom line |
| if (!showing){ |
| int x1 = Math.max(0, parent.borderLeft - 1); |
| int y1 = (parent.onBottom) ? y - 1 : y + height; |
| int x2 = size.x - parent.borderRight; |
| gc.setForeground(CTabFolder.borderColor); |
| gc.drawLine(x1, y1, x2, y1); |
| return; |
| } |
| |
| // draw selected tab background and outline |
| shape = null; |
| if (this.parent.onBottom) { |
| int[] left = parent.simple ? CTabFolder.SIMPLE_BOTTOM_LEFT_CORNER : CTabFolder.BOTTOM_LEFT_CORNER; |
| int[] right = parent.simple ? CTabFolder.SIMPLE_BOTTOM_RIGHT_CORNER : parent.curve; |
| if (parent.borderLeft == 0 && parent.indexOf(this) == parent.firstIndex) { |
| left = new int[]{x, y+height}; |
| } |
| shape = new int[left.length+right.length+8]; |
| int index = 0; |
| shape[index++] = x; // first point repeated here because below we reuse shape to draw outline |
| shape[index++] = y - 1; |
| shape[index++] = x; |
| shape[index++] = y - 1; |
| for (int i = 0; i < left.length/2; i++) { |
| shape[index++] = x + left[2*i]; |
| shape[index++] = y + height + left[2*i+1] - 1; |
| } |
| for (int i = 0; i < right.length/2; i++) { |
| shape[index++] = parent.simple ? rightEdge - 1 + right[2*i] : rightEdge - parent.curveIndent + right[2*i]; |
| shape[index++] = parent.simple ? y + height + right[2*i+1] - 1 : y + right[2*i+1] - 2; |
| } |
| shape[index++] = parent.simple ? rightEdge - 1 : rightEdge + parent.curveWidth - parent.curveIndent; |
| shape[index++] = y - 1; |
| shape[index++] = parent.simple ? rightEdge - 1 : rightEdge + parent.curveWidth - parent.curveIndent; |
| shape[index++] = y - 1; |
| } else { |
| int[] left = parent.simple ? CTabFolder.SIMPLE_TOP_LEFT_CORNER : CTabFolder.TOP_LEFT_CORNER; |
| int[] right = parent.simple ? CTabFolder.SIMPLE_TOP_RIGHT_CORNER : parent.curve; |
| if (parent.borderLeft == 0 && parent.indexOf(this) == parent.firstIndex) { |
| left = new int[]{x, y}; |
| } |
| shape = new int[left.length+right.length+8]; |
| int index = 0; |
| shape[index++] = x; // first point repeated here because below we reuse shape to draw outline |
| shape[index++] = y + height + 1; |
| shape[index++] = x; |
| shape[index++] = y + height + 1; |
| for (int i = 0; i < left.length/2; i++) { |
| shape[index++] = x + left[2*i]; |
| shape[index++] = y + left[2*i+1]; |
| } |
| for (int i = 0; i < right.length/2; i++) { |
| shape[index++] = parent.simple ? rightEdge - 1 + right[2*i] : rightEdge - parent.curveIndent + right[2*i]; |
| shape[index++] = y + right[2*i+1]; |
| } |
| shape[index++] = parent.simple ? rightEdge - 1 : rightEdge + parent.curveWidth - parent.curveIndent; |
| shape[index++] = y + height + 1; |
| shape[index++] = parent.simple ? rightEdge - 1 : rightEdge + parent.curveWidth - parent.curveIndent; |
| shape[index++] = y + height + 1; |
| } |
| |
| Rectangle clipping = gc.getClipping(); |
| Rectangle bounds = getBounds(); |
| bounds.height += 1; |
| if (parent.onBottom) bounds.y -= 1; |
| boolean tabInPaint = clipping.intersects(bounds); |
| |
| if (tabInPaint) { |
| // fill in tab background |
| if (parent.selectionGradientColors != null && !parent.selectionGradientVertical) { |
| parent.drawBackground(gc, shape, true); |
| } else { |
| Color defaultBackground = parent.selectionBackground; |
| Image image = parent.selectionBgImage; |
| Color[] colors = parent.selectionGradientColors; |
| int[] percents = parent.selectionGradientPercents; |
| boolean vertical = parent.selectionGradientVertical; |
| xx = x; |
| yy = parent.onBottom ? y -1 : y + 1; |
| ww = width; |
| hh = height; |
| if (!parent.single && !parent.simple) ww += parent.curveWidth - parent.curveIndent; |
| parent.drawBackground(gc, shape, xx, yy, ww, hh, defaultBackground, image, colors, percents, vertical); |
| } |
| } |
| |
| //Highlight MUST be drawn before the outline so that outline can cover it in the right spots (start of swoop) |
| //otherwise the curve looks jagged |
| drawHighlight(gc, rightEdge); |
| |
| // draw outline |
| shape[0] = Math.max(0, parent.borderLeft - 1); |
| if (parent.borderLeft == 0 && parent.indexOf(this) == parent.firstIndex) { |
| shape[1] = parent.onBottom ? y + height - 1 : y; |
| shape[5] = shape[3] = shape[1]; |
| } |
| shape[shape.length - 2] = size.x - parent.borderRight + 1; |
| for (int i = 0; i < shape.length/2; i++) { |
| if (shape[2*i + 1] == y + height + 1) shape[2*i + 1] -= 1; |
| } |
| RGB inside = parent.selectionBackground.getRGB(); |
| if (parent.selectionBgImage != null || |
| (parent.selectionGradientColors != null && parent.selectionGradientColors.length > 1)) { |
| inside = null; |
| } |
| RGB outside = parent.getBackground().getRGB(); |
| if (parent.bgImage != null || |
| (parent.gradientColors != null && parent.gradientColors.length > 1)) { |
| outside = null; |
| } |
| parent.antialias(shape, CTabFolder.borderColor.getRGB(), inside, outside, gc); |
| gc.setForeground(CTabFolder.borderColor); |
| gc.drawPolyline(shape); |
| |
| if (!tabInPaint) return; |
| } |
| |
| // draw Image |
| int xDraw = x + LEFT_MARGIN; |
| if (parent.single && (parent.showClose || showClose)) xDraw += CTabFolder.BUTTON_SIZE; |
| Image image = getImage(); |
| if (image != null) { |
| Rectangle imageBounds = image.getBounds(); |
| // only draw image if it won't overlap with close button |
| int maxImageWidth = rightEdge - xDraw - RIGHT_MARGIN; |
| if (!parent.single && closeRect.width > 0) maxImageWidth -= closeRect.width + INTERNAL_SPACING; |
| if (imageBounds.width < maxImageWidth) { |
| int imageX = xDraw; |
| int imageY = y + (height - imageBounds.height) / 2; |
| imageY += parent.onBottom ? -1 : 1; |
| gc.drawImage(image, imageX, imageY); |
| xDraw += imageBounds.width + INTERNAL_SPACING; |
| } |
| } |
| |
| // draw Text |
| int textWidth = rightEdge - xDraw - RIGHT_MARGIN; |
| if (!parent.single && closeRect.width > 0) textWidth -= closeRect.width + INTERNAL_SPACING; |
| if (textWidth > 0) { |
| Font gcFont = gc.getFont(); |
| gc.setFont(font == null ? parent.getFont() : font); |
| |
| if (shortenedText == null || shortenedTextWidth != textWidth) { |
| shortenedText = shortenText(gc, getText(), textWidth); |
| shortenedTextWidth = textWidth; |
| } |
| Point extent = gc.textExtent(shortenedText, FLAGS); |
| int textY = y + (height - extent.y) / 2; |
| textY += parent.onBottom ? -1 : 1; |
| |
| gc.setForeground(parent.selectionForeground); |
| gc.drawText(shortenedText, xDraw, textY, FLAGS); |
| gc.setFont(gcFont); |
| |
| // draw a Focus rectangle |
| if (parent.isFocusControl()) { |
| Display display = getDisplay(); |
| if (parent.simple || parent.single) { |
| gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK)); |
| gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE)); |
| gc.drawFocus(xDraw-1, textY-1, extent.x+2, extent.y+2); |
| } else { |
| gc.setForeground(display.getSystemColor(CTabFolder.BUTTON_BORDER)); |
| gc.drawLine(xDraw, textY+extent.y+1, xDraw+extent.x+1, textY+extent.y+1); |
| } |
| } |
| } |
| if (parent.showClose || showClose) drawClose(gc); |
| } |
| |
| /* |
| * Draw a highlight effect along the left, top, and right edges of the tab. |
| * Only for curved tabs, on top. |
| * Do not draw if insufficient colors. |
| */ |
| void drawHighlight(GC gc, int rightEdge) { |
| //only draw for curvy tabs and only draw for top tabs |
| if(parent.simple || this.parent.onBottom) |
| return; |
| |
| if(parent.selectionHighlightGradientBegin == null) |
| return; |
| |
| Color[] gradients = parent.selectionHighlightGradientColorsCache; |
| if(gradients == null) |
| return; |
| int gradientsSize = gradients.length; |
| if(gradientsSize == 0) |
| return; //shouldn't happen but just to be tidy |
| |
| gc.setForeground(gradients[0]); |
| |
| //draw top horizontal line |
| gc.drawLine( |
| CTabFolder.TOP_LEFT_CORNER_HILITE[0] + x + 1, //rely on fact that first pair is top/right of curve |
| 1 + y, |
| rightEdge - parent.curveIndent, |
| 1 + y); |
| |
| int[] leftHighlightCurve = CTabFolder.TOP_LEFT_CORNER_HILITE; |
| |
| int d = parent.tabHeight - parent.topCurveHighlightEnd.length /2; |
| |
| int lastX = 0; |
| int lastY = 0; |
| int lastColorIndex = 0; |
| |
| //draw upper left curve highlight |
| for (int i = 0; i < leftHighlightCurve.length /2; i++) { |
| int rawX = leftHighlightCurve[i * 2]; |
| int rawY = leftHighlightCurve[i * 2 + 1]; |
| lastX = rawX + x; |
| lastY = rawY + y; |
| lastColorIndex = rawY - 1; |
| gc.setForeground(gradients[lastColorIndex]); |
| gc.drawPoint(lastX, lastY); |
| } |
| //draw left vertical line highlight |
| for(int i = lastColorIndex; i < gradientsSize; i++) { |
| gc.setForeground(gradients[i]); |
| gc.drawPoint(lastX, 1 + lastY++); |
| } |
| |
| int rightEdgeOffset = rightEdge - parent.curveIndent; |
| |
| //draw right swoop highlight up to diagonal portion |
| for (int i = 0; i < parent.topCurveHighlightStart.length /2; i++) { |
| int rawX = parent.topCurveHighlightStart[i * 2]; |
| int rawY = parent.topCurveHighlightStart[i * 2 + 1]; |
| lastX = rawX + rightEdgeOffset; |
| lastY = rawY + y; |
| lastColorIndex = rawY - 1; |
| if(lastColorIndex >= gradientsSize) |
| break; //can happen if tabs are unusually short and cut off the curve |
| gc.setForeground(gradients[lastColorIndex]); |
| gc.drawPoint(lastX, lastY); |
| } |
| //draw right diagonal line highlight |
| for(int i = lastColorIndex; i < lastColorIndex + d; i++) { |
| if(i >= gradientsSize) |
| break; //can happen if tabs are unusually short and cut off the curve |
| gc.setForeground(gradients[i]); |
| gc.drawPoint(1 + lastX++, 1 + lastY++); |
| } |
| |
| //draw right swoop highlight from diagonal portion to end |
| for (int i = 0; i < parent.topCurveHighlightEnd.length /2; i++) { |
| int rawX = parent.topCurveHighlightEnd[i * 2]; //d is already encoded in this value |
| int rawY = parent.topCurveHighlightEnd[i * 2 + 1]; //d already encoded |
| lastX = rawX + rightEdgeOffset; |
| lastY = rawY + y; |
| lastColorIndex = rawY - 1; |
| if(lastColorIndex >= gradientsSize) |
| break; //can happen if tabs are unusually short and cut off the curve |
| gc.setForeground(gradients[lastColorIndex]); |
| gc.drawPoint(lastX, lastY); |
| } |
| } |
| |
| /* |
| * Draw the unselected border for the receiver on the right. |
| * |
| * @param gc |
| */ |
| void drawRightUnselectedBorder(GC gc) { |
| |
| int[] shape = null; |
| int startX = x + width - 1; |
| |
| if (this.parent.onBottom) { |
| int[] right = parent.simple |
| ? CTabFolder.SIMPLE_UNSELECTED_INNER_CORNER |
| : CTabFolder.BOTTOM_RIGHT_CORNER; |
| |
| shape = new int[right.length + 2]; |
| int index = 0; |
| |
| for (int i = 0; i < right.length / 2; i++) { |
| shape[index++] = startX + right[2 * i]; |
| shape[index++] = y + height + right[2 * i + 1] - 1; |
| } |
| shape[index++] = startX; |
| shape[index++] = y - 1; |
| } else { |
| int[] right = parent.simple |
| ? CTabFolder.SIMPLE_UNSELECTED_INNER_CORNER |
| : CTabFolder.TOP_RIGHT_CORNER; |
| |
| shape = new int[right.length + 2]; |
| int index = 0; |
| |
| for (int i = 0; i < right.length / 2; i++) { |
| shape[index++] = startX + right[2 * i]; |
| shape[index++] = y + right[2 * i + 1]; |
| } |
| |
| shape[index++] = startX; |
| shape[index++] = y + height; |
| |
| } |
| |
| drawBorder(gc, shape); |
| |
| } |
| |
| /* |
| * Draw the border of the tab |
| * |
| * @param gc |
| * @param shape |
| */ |
| void drawBorder(GC gc, int[] shape) { |
| |
| gc.setForeground(CTabFolder.borderColor); |
| gc.drawPolyline(shape); |
| } |
| |
| /* |
| * Draw the unselected border for the receiver on the left. |
| * |
| * @param gc |
| */ |
| void drawLeftUnselectedBorder(GC gc) { |
| |
| int[] shape = null; |
| if (this.parent.onBottom) { |
| int[] left = parent.simple |
| ? CTabFolder.SIMPLE_UNSELECTED_INNER_CORNER |
| : CTabFolder.BOTTOM_LEFT_CORNER; |
| |
| shape = new int[left.length + 2]; |
| int index = 0; |
| shape[index++] = x; |
| shape[index++] = y - 1; |
| for (int i = 0; i < left.length / 2; i++) { |
| shape[index++] = x + left[2 * i]; |
| shape[index++] = y + height + left[2 * i + 1] - 1; |
| } |
| } else { |
| int[] left = parent.simple |
| ? CTabFolder.SIMPLE_UNSELECTED_INNER_CORNER |
| : CTabFolder.TOP_LEFT_CORNER; |
| |
| shape = new int[left.length + 2]; |
| int index = 0; |
| shape[index++] = x; |
| shape[index++] = y + height; |
| for (int i = 0; i < left.length / 2; i++) { |
| shape[index++] = x + left[2 * i]; |
| shape[index++] = y + left[2 * i + 1]; |
| } |
| |
| } |
| |
| drawBorder(gc, shape); |
| } |
| |
| void drawUnselected(GC gc) { |
| // Do not draw partial items |
| if (!showing) return; |
| |
| Rectangle clipping = gc.getClipping(); |
| Rectangle bounds = getBounds(); |
| if (!clipping.intersects(bounds)) return; |
| |
| // draw border |
| int index = parent.indexOf(this); |
| |
| if (index > 0 && index < parent.selectedIndex) |
| drawLeftUnselectedBorder(gc); |
| // If it is the last one then draw a line |
| if (index > parent.selectedIndex) |
| drawRightUnselectedBorder(gc); |
| |
| // draw Image |
| int xDraw = x + LEFT_MARGIN; |
| Image image = getImage(); |
| if (image != null && parent.showUnselectedImage) { |
| Rectangle imageBounds = image.getBounds(); |
| // only draw image if it won't overlap with close button |
| int maxImageWidth = x + width - xDraw - RIGHT_MARGIN; |
| if (parent.showUnselectedClose && (parent.showClose || showClose)) { |
| maxImageWidth -= closeRect.width + INTERNAL_SPACING; |
| } |
| if (imageBounds.width < maxImageWidth) { |
| int imageX = xDraw; |
| int imageHeight = imageBounds.height; |
| int imageY = y + (height - imageHeight) / 2; |
| imageY += parent.onBottom ? -1 : 1; |
| int imageWidth = imageBounds.width * imageHeight / imageBounds.height; |
| gc.drawImage(image, |
| imageBounds.x, imageBounds.y, imageBounds.width, imageBounds.height, |
| imageX, imageY, imageWidth, imageHeight); |
| xDraw += imageWidth + INTERNAL_SPACING; |
| } |
| } |
| // draw Text |
| int textWidth = x + width - xDraw - RIGHT_MARGIN; |
| if (parent.showUnselectedClose && (parent.showClose || showClose)) { |
| textWidth -= closeRect.width + INTERNAL_SPACING; |
| } |
| if (textWidth > 0) { |
| Font gcFont = gc.getFont(); |
| gc.setFont(font == null ? parent.getFont() : font); |
| if (shortenedText == null || shortenedTextWidth != textWidth) { |
| shortenedText = shortenText(gc, getText(), textWidth); |
| shortenedTextWidth = textWidth; |
| } |
| Point extent = gc.textExtent(shortenedText, FLAGS); |
| int textY = y + (height - extent.y) / 2; |
| textY += parent.onBottom ? -1 : 1; |
| gc.setForeground(parent.getForeground()); |
| gc.drawText(shortenedText, xDraw, textY, FLAGS); |
| gc.setFont(gcFont); |
| } |
| // draw close |
| if (parent.showUnselectedClose && (parent.showClose || showClose)) drawClose(gc); |
| } |
| /** |
| * Returns a rectangle describing the receiver's size and location |
| * relative to its parent. |
| * |
| * @return the receiver's bounding column rectangle |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Rectangle getBounds () { |
| //checkWidget(); |
| int w = width; |
| if (!parent.simple && !parent.single && parent.indexOf(this) == parent.selectedIndex) w += parent.curveWidth - parent.curveIndent; |
| return new Rectangle(x, y, w, height); |
| } |
| /** |
| * Gets the control that is displayed in the content area of the tab item. |
| * |
| * @return the control |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Control getControl () { |
| checkWidget(); |
| return control; |
| } |
| /** |
| * Get the image displayed in the tab if the tab is disabled. |
| * |
| * @return the disabled image or null |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @deprecated the disabled image is not used |
| */ |
| public Image getDisabledImage(){ |
| checkWidget(); |
| return disabledImage; |
| } |
| /** |
| * Returns the font that the receiver will use to paint textual information. |
| * |
| * @return the receiver's font |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public Font getFont() { |
| checkWidget(); |
| if (font != null) return font; |
| return parent.getFont(); |
| } |
| /** |
| * Returns the receiver's parent, which must be a <code>CTabFolder</code>. |
| * |
| * @return the receiver's parent |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public CTabFolder getParent () { |
| //checkWidget(); |
| return parent; |
| } |
| /** |
| * Returns <code>true</code> to indicate that the receiver's close button should be shown. |
| * Otherwise return <code>false</code>. The initial value is defined by the style (SWT.CLOSE) |
| * that was used to create the receiver. |
| * |
| * @return <code>true</code> if the close button should be shown |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.4 |
| */ |
| public boolean getShowClose() { |
| checkWidget(); |
| return showClose; |
| } |
| /** |
| * Returns the receiver's tool tip text, or null if it has |
| * not been set. |
| * |
| * @return the receiver's tool tip text |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public String getToolTipText () { |
| checkWidget(); |
| if (toolTipText == null && shortenedText != null) { |
| String text = getText(); |
| if (!shortenedText.equals(text)) return text; |
| } |
| return toolTipText; |
| } |
| /** |
| * Returns <code>true</code> if the item will be rendered in the visible area of the CTabFolder. Returns false otherwise. |
| * |
| * @return <code>true</code> if the item will be rendered in the visible area of the CTabFolder. Returns false otherwise. |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public boolean isShowing () { |
| checkWidget(); |
| return showing; |
| } |
| void onPaint(GC gc, boolean isSelected) { |
| if (width == 0 || height == 0) return; |
| if (isSelected) { |
| drawSelected(gc); |
| } else { |
| drawUnselected(gc); |
| } |
| } |
| int preferredHeight(GC gc) { |
| Image image = getImage(); |
| int h = (image == null) ? 0 : image.getBounds().height; |
| String text = getText(); |
| if (font == null) { |
| h = Math.max(h, gc.textExtent(text, FLAGS).y); |
| } else { |
| Font gcFont = gc.getFont(); |
| gc.setFont(font); |
| h = Math.max(h, gc.textExtent(text, FLAGS).y); |
| gc.setFont(gcFont); |
| } |
| return h + TOP_MARGIN + BOTTOM_MARGIN; |
| } |
| int preferredWidth(GC gc, boolean isSelected, boolean minimum) { |
| // NOTE: preferred width does not include the "dead space" caused |
| // by the curve. |
| if (isDisposed()) return 0; |
| int w = 0; |
| Image image = getImage(); |
| if (image != null && (isSelected || parent.showUnselectedImage)) { |
| w += image.getBounds().width; |
| } |
| String text = null; |
| if (minimum) { |
| int minChars = parent.minChars; |
| text = minChars == 0 ? null : getText(); |
| if (text != null && text.length() > minChars) { |
| if (useEllipses()) { |
| int end = minChars < ELLIPSIS.length() + 1 ? minChars : minChars - ELLIPSIS.length(); |
| text = text.substring(0, end); |
| if (minChars > ELLIPSIS.length() + 1) text += ELLIPSIS; |
| } else { |
| int end = minChars; |
| text = text.substring(0, end); |
| } |
| } |
| } else { |
| text = getText(); |
| } |
| if (text != null) { |
| if (w > 0) w += INTERNAL_SPACING; |
| if (font == null) { |
| w += gc.textExtent(text, FLAGS).x; |
| } else { |
| Font gcFont = gc.getFont(); |
| gc.setFont(font); |
| w += gc.textExtent(text, FLAGS).x; |
| gc.setFont(gcFont); |
| } |
| } |
| if (parent.showClose || showClose) { |
| if (isSelected || parent.showUnselectedClose) { |
| if (w > 0) w += INTERNAL_SPACING; |
| w += CTabFolder.BUTTON_SIZE; |
| } |
| } |
| return w + LEFT_MARGIN + RIGHT_MARGIN; |
| } |
| /** |
| * Sets the control that is used to fill the client area of |
| * the tab folder when the user selects the tab item. |
| * |
| * @param control the new control (or null) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li> |
| * <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setControl (Control control) { |
| checkWidget(); |
| if (control != null) { |
| if (control.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| if (control.getParent() != parent) SWT.error (SWT.ERROR_INVALID_PARENT); |
| } |
| if (this.control != null && !this.control.isDisposed()) { |
| this.control.setVisible(false); |
| } |
| this.control = control; |
| if (this.control != null) { |
| int index = parent.indexOf (this); |
| if (index == parent.getSelectionIndex ()){ |
| this.control.setBounds(parent.getClientArea ()); |
| this.control.setVisible(true); |
| } else { |
| this.control.setVisible(false); |
| } |
| } |
| } |
| /** |
| * Sets the image that is displayed if the tab item is disabled. |
| * Null will clear the image. |
| * |
| * @param image the image to be displayed when the item is disabled or null |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @deprecated This image is not used |
| */ |
| public void setDisabledImage (Image image) { |
| checkWidget(); |
| if (image != null && image.isDisposed ()) { |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| this.disabledImage = image; |
| } |
| /** |
| * Sets the font that the receiver will use to paint textual information |
| * for this item to the font specified by the argument, or to the default font |
| * for that kind of control if the argument is null. |
| * |
| * @param font the new font (or null) |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> |
| * </ul> |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.0 |
| */ |
| public void setFont (Font font){ |
| checkWidget(); |
| if (font != null && font.isDisposed ()) { |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| if (font == null && this.font == null) return; |
| if (font != null && font.equals(this.font)) return; |
| this.font = font; |
| if (!parent.updateTabHeight(false)) { |
| parent.updateItems(); |
| parent.redrawTabs(); |
| } |
| } |
| public void setImage (Image image) { |
| checkWidget(); |
| if (image != null && image.isDisposed ()) { |
| SWT.error(SWT.ERROR_INVALID_ARGUMENT); |
| } |
| Image oldImage = getImage(); |
| if (image == null && oldImage == null) return; |
| if (image != null && image.equals(oldImage)) return; |
| super.setImage(image); |
| if (!parent.updateTabHeight(false)) { |
| // If image is the same size as before, |
| // redraw only the image |
| if (oldImage != null && image != null) { |
| Rectangle oldBounds = oldImage.getBounds(); |
| Rectangle bounds = image.getBounds(); |
| if (bounds.width == oldBounds.width && bounds.height == oldBounds.height) { |
| if (showing) { |
| boolean selected = parent.indexOf(this) == parent.selectedIndex; |
| if (selected || parent.showUnselectedImage) { |
| int imageX = x + LEFT_MARGIN, maxImageWidth; |
| if (selected) { |
| if (parent.single && (parent.showClose || showClose)) imageX += CTabFolder.BUTTON_SIZE; |
| int rightEdge = Math.min (x + width, parent.getRightItemEdge()); |
| maxImageWidth = rightEdge - imageX - RIGHT_MARGIN; |
| if (!parent.single && closeRect.width > 0) maxImageWidth -= closeRect.width + INTERNAL_SPACING; |
| } else { |
| maxImageWidth = x + width - imageX - RIGHT_MARGIN; |
| if (parent.showUnselectedClose && (parent.showClose || showClose)) { |
| maxImageWidth -= closeRect.width + INTERNAL_SPACING; |
| } |
| } |
| if (bounds.width < maxImageWidth) { |
| int imageY = y + (height - bounds.height) / 2 + (parent.onBottom ? -1 : 1); |
| parent.redraw(imageX, imageY, bounds.width, bounds.height, false); |
| } |
| } |
| } |
| return; |
| } |
| } |
| parent.updateItems(); |
| parent.redrawTabs(); |
| } |
| } |
| /** |
| * Sets to <code>true</code> to indicate that the receiver's close button should be shown. |
| * If the parent (CTabFolder) was created with SWT.CLOSE style, changing this value has |
| * no effect. |
| * |
| * @param close the new state of the close button |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| * |
| * @since 3.4 |
| */ |
| public void setShowClose(boolean close) { |
| checkWidget(); |
| if (showClose == close) return; |
| showClose = close; |
| parent.updateItems(); |
| parent.redrawTabs(); |
| } |
| public void setText (String string) { |
| checkWidget(); |
| if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| if (string.equals(getText())) return; |
| super.setText(string); |
| shortenedText = null; |
| shortenedTextWidth = 0; |
| if (!parent.updateTabHeight(false)) { |
| parent.updateItems(); |
| parent.redrawTabs(); |
| } |
| } |
| /** |
| * Sets the receiver's tool tip text to the argument, which |
| * may be null indicating that no tool tip text should be shown. |
| * |
| * @param string the new tool tip text (or null) |
| * |
| * @exception SWTException <ul> |
| * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public void setToolTipText (String string) { |
| checkWidget(); |
| toolTipText = string; |
| } |
| |
| } |