Examples with TreeItem org.eclipse.swt.widgets.TreeItem used on opensource projects

Example 91 with TreeItem

use of org.eclipse.swt.widgets.TreeItem in project eclipse.platform.swt by eclipse.

the class GraphicsExample method setTab.

/**
 * Sets the current tab.
 */
public void setTab(GraphicsTab tab) {
    Control[] children = tabControlPanel.getChildren();
    for (Control control : children) {
        control.dispose();
    }
    if (this.tab != null)
        this.tab.dispose();
    this.tab = tab;
    if (tab != null) {
        setDoubleBuffered(tab.getDoubleBuffered());
        tab.createControlPanel(tabControlPanel);
        tabDesc.setText(tab.getDescription());
    } else {
        tabDesc.setText("");
    }
    FormData data = (FormData) tabControlPanel.getLayoutData();
    children = tabControlPanel.getChildren();
    if (children.length != 0) {
        data.top = null;
    } else {
        data.top = new FormAttachment(100, -MARGIN);
    }
    parent.layout(true, true);
    if (tab != null) {
        TreeItem[] selection = tabList.getSelection();
        if (selection.length == 0 || selection[0].getData() != tab) {
            TreeItem item = findItemByData(tabList.getItems(), tab);
            if (item != null)
                tabList.setSelection(new TreeItem[] { item });
        }
    }
    canvas.redraw();
}

Example 92 with TreeItem

use of org.eclipse.swt.widgets.TreeItem in project eclipse.platform.swt by eclipse.

the class Bug529126_TreeMouseDown method main.

// Static =================================================================
public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Custom gradient selection for Tree");
    shell.setLayout(new FillLayout());
    final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION | SWT.VIRTUAL);
    tree.setHeaderVisible(true);
    tree.setLinesVisible(true);
    final int columnCount = 4;
    for (int i = 0; i < columnCount; i++) {
        final TreeColumn column = new TreeColumn(tree, SWT.NONE);
        column.setText("Column " + i);
    }
    final int itemCount = 5;
    for (int i = 0; i < itemCount; i++) {
        final TreeItem item1 = new TreeItem(tree, SWT.NONE);
        for (int j = 0; j < i; j++) {
            final TreeItem item2 = new TreeItem(item1, SWT.NONE);
            for (int k = 0; k < j; k++) {
                new TreeItem(item2, SWT.NONE);
            }
        }
    }
    tree.addListener(SWT.SetData, event -> {
        final TreeItem item = (TreeItem) event.item;
        final TreeItem parentItem = item.getParentItem();
        final String text;
        if (parentItem != null) {
            final String parentText = (String) parentItem.getData();
            text = parentText + event.index + "/";
        } else {
            text = "/";
        }
        item.setData(text);
    });
    tree.addListener(SWT.PaintItem, event -> {
        final TreeItem item = (TreeItem) event.item;
        final String text = (String) item.getData();
        event.gc.drawText(text + " [" + event.index + "]", event.x, event.y, true);
    });
    /*
		 * NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
		 * Therefore, it is critical for performance that these methods be
		 * as efficient as possible.
		 */
    tree.addListener(SWT.EraseItem, event -> {
        event.detail &= ~SWT.HOT;
        if ((event.detail & SWT.SELECTED) != 0) {
            final GC gc = event.gc;
            final Rectangle area = tree.getClientArea();
            /*
				 * If you wish to paint the selection beyond the end of
				 * last column, you must change the clipping region.
				 */
            final int columnCount1 = tree.getColumnCount();
            if (event.index == columnCount1 - 1 || columnCount1 == 0) {
                final int width = area.x + area.width - event.x;
                if (width > 0) {
                    final Region region = new Region();
                    gc.getClipping(region);
                    region.add(event.x, event.y, width, event.height);
                    gc.setClipping(region);
                    region.dispose();
                }
            }
            gc.setAdvanced(true);
            if (gc.getAdvanced()) {
                gc.setAlpha(127);
            }
            final Rectangle rect = event.getBounds();
            final Color foreground = gc.getForeground();
            final Color background = gc.getBackground();
            gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
            gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND));
            gc.fillGradientRectangle(0, rect.y, 500, rect.height, false);
            // restore colors for subsequent drawing
            gc.setForeground(foreground);
            gc.setBackground(background);
            event.detail &= ~SWT.SELECTED;
        }
    });
    tree.getColumn(0).setWidth(200);
    for (int i = 1; i < columnCount; i++) {
        tree.getColumn(i).pack();
    }
    tree.setSelection(tree.getItem(0));
    tree.addListener(SWT.MouseDown, event -> System.out.println("event = " + event));
    shell.setSize(500, 500);
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch()) {
            display.sleep();
        }
    }
    display.dispose();
}

Example 93 with TreeItem

use of org.eclipse.swt.widgets.TreeItem in project eclipse.platform.swt by eclipse.

the class Bug530969_ControlPrint method main.

public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display, SWT.NO_TRIM);
    Color gray = new Color(display, 222, 223, 224);
    Composite composite = new Composite(shell, SWT.NONE);
    RowLayout layout = new RowLayout();
    layout.marginTop = 0;
    layout.marginLeft = 0;
    layout.marginBottom = 0;
    layout.marginRight = 0;
    layout.spacing = 0;
    composite.setLayout(layout);
    createButton(composite, gray, true, true);
    createButton(composite, gray, false, true);
    createButton(composite, gray, true, false);
    createButton(composite, gray, false, false);
    Point cSize = composite.computeSize(SWT.DEFAULT, SWT.DEFAULT);
    composite.setSize(cSize);
    shell.setBackground(gray);
    shell.setLocation(0, 0);
    shell.setSize(cSize);
    shell.open();
    Image canvas = new Image(display, cSize.x, cSize.y);
    GC gc = new GC(canvas);
    composite.print(gc);
    int buttonX = cSize.x / 4;
    Image[] images = new Image[4];
    for (int i = 0; i < 4; i++) {
        Image image = new Image(display, buttonX, cSize.y);
        gc.copyArea(image, buttonX * i, 0);
        images[i] = image;
    }
    shell.close();
    Shell properShell = new Shell(display);
    properShell.setLayout(new FillLayout());
    Image firstImage = images[0];
    final Tree tree = new Tree(properShell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    TreeItem lastItem = new TreeItem(tree, SWT.NONE);
    lastItem.setImage(firstImage);
    lastItem.setText("root item with first image");
    for (int i = 0; i < 3; i++) {
        TreeItem newItem = new TreeItem(lastItem, SWT.NONE);
        newItem.setText("descendant item with image " + i);
        newItem.setImage(images[i + 1]);
    }
    lastItem.setExpanded(true);
    properShell.setSize(400, 400);
    properShell.open();
    while (!properShell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
    canvas.dispose();
    gc.dispose();
    firstImage.dispose();
}

Example 94 with TreeItem

use of org.eclipse.swt.widgets.TreeItem in project eclipse.platform.swt by eclipse.

the class MJ_Tree method bug73812_treeColumn_getWidth_0.

@Test
public void bug73812_treeColumn_getWidth_0() {
    Shell shell = mkShell("Verify that all columns are of same width. (100).");
    shell.setSize(SWIDTH, SHEIGHT);
    shell.setLayout(new FillLayout());
    final Tree tt = new Tree(shell, SWT.FULL_SELECTION | SWT.MULTI | SWT.VIRTUAL);
    tt.setLinesVisible(true);
    tt.setHeaderVisible(true);
    for (int i = 0; i < 10; i++) {
        TreeColumn tc = new TreeColumn(tt, SWT.NONE);
        tc.setWidth(100);
        System.out.println(tc.getWidth());
        tc.setWidth(tc.getWidth());
        tc.setText("Column " + i);
    }
    for (int i = 0; i < 100; i++) {
        new TreeItem(tt, SWT.NONE);
    }
    shell.open();
    mainLoop(shell);
}

Example 95 with TreeItem

use of org.eclipse.swt.widgets.TreeItem in project eclipse.platform.swt by eclipse.

the class MJ_Tree method basicTree_Snippet35.

@Test
public void basicTree_Snippet35() {
    // original was table, modified for tree.
    Shell shell = mkShell("TREE: Basic Tree with a few items, no column, no headers");
    shell.setLayout(new FillLayout());
    Tree tree = new Tree(shell, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
    for (int i = 0; i < 12; i++) {
        TreeItem item = new TreeItem(tree, 0);
        item.setText("Item " + i);
    }
    shell.setSize(SWIDTH, SHEIGHT);
    shell.open();
    mainLoop(shell);
}