Examples with GC org.eclipse.swt.graphics.GC used on opensource projects

Example 6 with GC

use of org.eclipse.swt.graphics.GC in project translationstudio8 by heartsome.

the class HSDropDownButton method getSpaceByWidth.

public String getSpaceByWidth(int width) {
    GC gc = new GC(Display.getDefault());
    int spaceWidth = gc.getAdvanceWidth(' ');
    gc.dispose();
    int spacecount = width / spaceWidth;
    StringBuilder b = new StringBuilder();
    while (spacecount-- > 0) {
        b.append(" ");
    }
    return b.toString();
}

Example 7 with GC

use of org.eclipse.swt.graphics.GC in project translationstudio8 by heartsome.

the class TableCombo method computeSize.

/**
	 * {@inheritDoc}
	 */
public Point computeSize(int wHint, int hHint, boolean changed) {
    checkWidget();
    int overallWidth = 0;
    int overallHeight = 0;
    int borderWidth = getBorderWidth();
    // use user defined values if they are specified.
    if (wHint != SWT.DEFAULT && hHint != SWT.DEFAULT) {
        overallWidth = wHint;
        overallHeight = hHint;
    } else {
        TableItem[] tableItems = table.getItems();
        GC gc = new GC(text);
        //$NON-NLS-1$
        int spacer = gc.stringExtent(" ").x;
        int maxTextWidth = gc.stringExtent(text.getText()).x;
        int colIndex = getDisplayColumnIndex();
        int maxImageHeight = 0;
        int currTextWidth = 0;
        // calculate the maximum text width and image height.
        for (int i = 0; i < tableItems.length; i++) {
            currTextWidth = gc.stringExtent(tableItems[i].getText(colIndex)).x;
            // take image into account if there is one for the tableitem.
            if (tableItems[i].getImage() != null) {
                currTextWidth += tableItems[i].getImage().getBounds().width;
                maxImageHeight = Math.max(tableItems[i].getImage().getBounds().height, maxImageHeight);
            }
            maxTextWidth = Math.max(currTextWidth, maxTextWidth);
        }
        gc.dispose();
        Point textSize = text.computeSize(SWT.DEFAULT, SWT.DEFAULT, changed);
        Point arrowSize = arrow.computeSize(SWT.DEFAULT, SWT.DEFAULT, changed);
        Point tableSize = table.computeSize(SWT.DEFAULT, SWT.DEFAULT, changed);
        overallHeight = Math.max(textSize.y, arrowSize.y);
        overallHeight = Math.max(maxImageHeight, overallHeight);
        overallWidth = Math.max(maxTextWidth + 2 * spacer + arrowSize.x + 2 * borderWidth, tableSize.x);
        // use user specified if they were entered.
        if (wHint != SWT.DEFAULT)
            overallWidth = wHint;
        if (hHint != SWT.DEFAULT)
            overallHeight = hHint;
    }
    return new Point(overallWidth + 2 * borderWidth, overallHeight + 2 * borderWidth);
}

Example 8 with GC

use of org.eclipse.swt.graphics.GC in project translationstudio8 by heartsome.

the class GridDragSourceEffect method getDragSourceImage.

Image getDragSourceImage(DragSourceEvent event) {
    if (dragSourceImage != null)
        dragSourceImage.dispose();
    dragSourceImage = null;
    Grid grid = (Grid) getControl();
    Display display = grid.getDisplay();
    Rectangle empty = new Rectangle(0, 0, 0, 0);
    // Collect the currently selected items. 
    Point[] selection;
    if (grid.getCellSelectionEnabled()) {
        selection = grid.getCellSelection();
    } else {
        List l = new ArrayList();
        GridItem[] selItems = grid.getSelection();
        for (int i = 0; i < selItems.length; i++) {
            for (int j = 0; j < grid.getColumnCount(); j++) {
                if (grid.getColumn(j).isVisible()) {
                    l.add(new Point(j, grid.indexOf(selItems[i])));
                }
            }
        }
        selection = (Point[]) l.toArray(new Point[l.size()]);
    }
    if (selection.length == 0)
        return null;
    Rectangle bounds = null;
    for (int i = 0; i < selection.length; i++) {
        GridItem item = grid.getItem(selection[i].y);
        Rectangle currBounds = item.getBounds(selection[i].x);
        if (empty.equals(currBounds)) {
            selection[i] = null;
        } else {
            if (bounds == null) {
                bounds = currBounds;
            } else {
                bounds = bounds.union(currBounds);
            }
        }
    }
    if (bounds == null)
        return null;
    if (bounds.width <= 0 || bounds.height <= 0)
        return null;
    dragSourceImage = new Image(display, bounds.width, bounds.height);
    GC gc = new GC(dragSourceImage);
    for (int i = 0; i < selection.length; i++) {
        if (selection[i] == null)
            continue;
        GridItem item = grid.getItem(selection[i].y);
        GridColumn column = grid.getColumn(selection[i].x);
        Rectangle currBounds = item.getBounds(selection[i].x);
        GridCellRenderer r = column.getCellRenderer();
        r.setBounds(currBounds.x - bounds.x, currBounds.y - bounds.y, currBounds.width, currBounds.height);
        gc.setClipping(currBounds.x - bounds.x - 1, currBounds.y - bounds.y - 1, currBounds.width + 2, currBounds.height + 2);
        r.setColumn(selection[i].x);
        r.setSelected(false);
        r.setFocus(false);
        r.setRowFocus(false);
        r.setCellFocus(false);
        r.setRowHover(false);
        r.setColumnHover(false);
        r.setCellSelected(false);
        r.setHoverDetail("");
        r.setDragging(true);
        r.paint(gc, item);
        gc.setClipping((Rectangle) null);
    }
    gc.dispose();
    return dragSourceImage;
}

Example 9 with GC

use of org.eclipse.swt.graphics.GC in project translationstudio8 by heartsome.

the class GridItem method pack.

/**
	 * Sets this <code>GridItem</code> to its preferred height.
	 *
	 * @throws org.eclipse.swt.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 pack() {
    checkWidget();
    int maxPrefHeight = 2;
    GridColumn[] columns = parent.getColumns();
    GC gc = new GC(parent);
    for (int cnt = 0; cnt < columns.length; cnt++) {
        if (!columns[cnt].isVisible())
            // invisible columns do not affect item/row height
            continue;
        GridCellRenderer renderer = columns[cnt].getCellRenderer();
        renderer.setAlignment(columns[cnt].getAlignment());
        renderer.setCheck(columns[cnt].isCheck());
        renderer.setColumn(cnt);
        renderer.setTree(columns[cnt].isTree());
        renderer.setWordWrap(columns[cnt].getWordWrap());
        Point size = renderer.computeSize(gc, columns[cnt].getWidth(), SWT.DEFAULT, this);
        if (size != null)
            maxPrefHeight = Math.max(maxPrefHeight, size.y);
    }
    gc.dispose();
    setHeight(maxPrefHeight);
}

Example 10 with GC

use of org.eclipse.swt.graphics.GC in project translationstudio8 by heartsome.

the class GridItem method setHeaderImage.

/**
	 * Sets the receiver's row header image. If the image is <code>null</code>
	 * none is shown in the header
	 *
	 * @param image
	 *            the new image
	 * @throws org.eclipse.swt.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 setHeaderImage(Image image) {
    checkWidget();
    // if (text == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
    if (image != headerImage) {
        GC gc = new GC(parent);
        int oldWidth = parent.getRowHeaderRenderer().computeSize(gc, SWT.DEFAULT, SWT.DEFAULT, this).x;
        int oldHeight = parent.getRowHeaderRenderer().computeSize(gc, SWT.DEFAULT, SWT.DEFAULT, this).y;
        this.headerImage = image;
        int newWidth = parent.getRowHeaderRenderer().computeSize(gc, SWT.DEFAULT, SWT.DEFAULT, this).x;
        int newHeight = parent.getRowHeaderRenderer().computeSize(gc, SWT.DEFAULT, SWT.DEFAULT, this).y;
        gc.dispose();
        parent.recalculateRowHeaderWidth(this, oldWidth, newWidth);
        parent.recalculateRowHeaderHeight(this, oldHeight, newHeight);
    }
    parent.redraw();
}