List of usage examples for org.eclipse.swt.widgets Tree getClientArea
public Rectangle getClientArea()
From source file:org.eclipse.swt.snippets.Snippet254.java
public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); shell.setText("Snippet 254"); RowLayout layout = new RowLayout(SWT.VERTICAL); layout.fill = true;/*w w w . ja va2 s.c om*/ layout.wrap = false; shell.setLayout(layout); final Tree tree = new Tree(shell, SWT.NONE); for (int i = 0; i < 32; i++) { TreeItem item0 = new TreeItem(tree, SWT.NONE); item0.setText("Item " + i + " is quite long"); for (int j = 0; j < 3; j++) { TreeItem item1 = new TreeItem(item0, SWT.NONE); item1.setText("Item " + i + " " + j + " is quite long"); for (int k = 0; k < 3; k++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("Item " + i + " " + j + " " + k + " is quite long"); for (int l = 0; l < 3; l++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("Item " + i + " " + j + " " + k + " " + l + " is quite long"); } } } } tree.setLayoutData(new RowData(200, 200)); final Button button = new Button(shell, SWT.PUSH); button.setText("Visible Items []"); button.addListener(SWT.Selection, e -> { int visibleCount = 0; Rectangle rect = tree.getClientArea(); TreeItem item = tree.getTopItem(); while (item != null) { visibleCount++; Rectangle itemRect = item.getBounds(); if (itemRect.y + itemRect.height > rect.y + rect.height) { break; } item = nextItem(tree, item); } button.setText("Visible Items [" + visibleCount + "]"); }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet226.java
public static void main(String[] args) { final Display display = new Display(); 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); tree.setHeaderVisible(true);// ww w . j ava2 s . c o m tree.setLinesVisible(true); int columnCount = 4; for (int i = 0; i < columnCount; i++) { TreeColumn column = new TreeColumn(tree, SWT.NONE); column.setText("Column " + i); } int itemCount = 3; for (int i = 0; i < itemCount; i++) { TreeItem item1 = new TreeItem(tree, SWT.NONE); item1.setText("item " + i); for (int c = 1; c < columnCount; c++) { item1.setText(c, "item [" + i + "-" + c + "]"); } for (int j = 0; j < itemCount; j++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("item [" + i + " " + j + "]"); for (int c = 1; c < columnCount; c++) { item2.setText(c, "item [" + i + " " + j + "-" + c + "]"); } for (int k = 0; k < itemCount; k++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("item [" + i + " " + j + " " + k + "]"); for (int c = 1; c < columnCount; c++) { item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]"); } } } } /* * 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) { GC gc = event.gc; Rectangle area = tree.getClientArea(); /* * If you wish to paint the selection beyond the end of * last column, you must change the clipping region. */ int columnCount1 = tree.getColumnCount(); if (event.index == columnCount1 - 1 || columnCount1 == 0) { int width = area.x + area.width - event.x; if (width > 0) { 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); Rectangle rect = event.getBounds(); Color foreground = gc.getForeground(); 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; } }); for (int i = 0; i < columnCount; i++) { tree.getColumn(i).pack(); } tree.setSelection(tree.getItem(0)); shell.setSize(500, 200); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:TreeTableGradient.java
public static void main(String[] args) { final Display display = new Display(); 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); tree.setHeaderVisible(true);/*w w w. java2 s . c om*/ tree.setLinesVisible(true); int columnCount = 4; for (int i = 0; i < columnCount; i++) { TreeColumn column = new TreeColumn(tree, SWT.NONE); column.setText("Column " + i); } int itemCount = 3; for (int i = 0; i < itemCount; i++) { TreeItem item1 = new TreeItem(tree, SWT.NONE); item1.setText("item " + i); for (int c = 1; c < columnCount; c++) { item1.setText(c, "item [" + i + "-" + c + "]"); } for (int j = 0; j < itemCount; j++) { TreeItem item2 = new TreeItem(item1, SWT.NONE); item2.setText("item [" + i + " " + j + "]"); for (int c = 1; c < columnCount; c++) { item2.setText(c, "item [" + i + " " + j + "-" + c + "]"); } for (int k = 0; k < itemCount; k++) { TreeItem item3 = new TreeItem(item2, SWT.NONE); item3.setText("item [" + i + " " + j + " " + k + "]"); for (int c = 1; c < columnCount; c++) { item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]"); } } } } /* * 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, new Listener() { public void handleEvent(Event event) { if ((event.detail & SWT.SELECTED) != 0) { GC gc = event.gc; Rectangle area = tree.getClientArea(); /* * If you wish to paint the selection beyond the end of last column, * you must change the clipping region. */ int columnCount = tree.getColumnCount(); if (event.index == columnCount - 1 || columnCount == 0) { int width = area.x + area.width - event.x; if (width > 0) { 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); Rectangle rect = event.getBounds(); Color foreground = gc.getForeground(); 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; } } }); for (int i = 0; i < columnCount; i++) { tree.getColumn(i).pack(); } tree.setSelection(tree.getItem(0)); shell.setSize(500, 200); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet111.java
public static void main(String[] args) { final Display display = new Display(); final Color black = display.getSystemColor(SWT.COLOR_BLACK); Shell shell = new Shell(display); shell.setText("Snippet 111"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.BORDER); for (int i = 0; i < 16; i++) { TreeItem itemI = new TreeItem(tree, SWT.NONE); itemI.setText("Item " + i); for (int j = 0; j < 16; j++) { TreeItem itemJ = new TreeItem(itemI, SWT.NONE); itemJ.setText("Item " + j); }/*from w w w .j ava 2 s. co m*/ } final TreeItem[] lastItem = new TreeItem[1]; final TreeEditor editor = new TreeEditor(tree); tree.addListener(SWT.Selection, event -> { final TreeItem item = (TreeItem) event.item; if (item != null && item == lastItem[0]) { boolean showBorder = true; final Composite composite = new Composite(tree, SWT.NONE); if (showBorder) composite.setBackground(black); final Text text = new Text(composite, SWT.NONE); final int inset = showBorder ? 1 : 0; composite.addListener(SWT.Resize, e1 -> { Rectangle rect1 = composite.getClientArea(); text.setBounds(rect1.x + inset, rect1.y + inset, rect1.width - inset * 2, rect1.height - inset * 2); }); Listener textListener = e2 -> { switch (e2.type) { case SWT.FocusOut: item.setText(text.getText()); composite.dispose(); break; case SWT.Verify: String newText = text.getText(); String leftText = newText.substring(0, e2.start); String rightText = newText.substring(e2.end, newText.length()); GC gc = new GC(text); Point size = gc.textExtent(leftText + e2.text + rightText); gc.dispose(); size = text.computeSize(size.x, SWT.DEFAULT); editor.horizontalAlignment = SWT.LEFT; Rectangle itemRect = item.getBounds(), rect2 = tree.getClientArea(); editor.minimumWidth = Math.max(size.x, itemRect.width) + inset * 2; int left = itemRect.x, right = rect2.x + rect2.width; editor.minimumWidth = Math.min(editor.minimumWidth, right - left); editor.minimumHeight = size.y + inset * 2; editor.layout(); break; case SWT.Traverse: switch (e2.detail) { case SWT.TRAVERSE_RETURN: item.setText(text.getText()); //FALL THROUGH case SWT.TRAVERSE_ESCAPE: composite.dispose(); e2.doit = false; } break; } }; text.addListener(SWT.FocusOut, textListener); text.addListener(SWT.Traverse, textListener); text.addListener(SWT.Verify, textListener); editor.setEditor(composite, item); text.setText(item.getText()); text.selectAll(); text.setFocus(); } lastItem[0] = item; }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet312.java
public static void main(String[] args) { final Display display = new Display(); Shell shell = new Shell(display); shell.setText("Snippet 312"); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER); tree.setHeaderVisible(true);//ww w. j a va 2 s . c o m final Menu headerMenu = new Menu(shell, SWT.POP_UP); final TreeColumn columnName = new TreeColumn(tree, SWT.NONE); columnName.setText("Name"); columnName.setWidth(150); createMenuItem(headerMenu, columnName); final TreeColumn columnSize = new TreeColumn(tree, SWT.NONE); columnSize.setText("Size"); columnSize.setWidth(150); createMenuItem(headerMenu, columnSize); final TreeColumn columnType = new TreeColumn(tree, SWT.NONE); columnType.setText("Type"); columnType.setWidth(150); createMenuItem(headerMenu, columnType); final TreeColumn columnDate = new TreeColumn(tree, SWT.NONE); columnDate.setText("Date"); columnDate.setWidth(150); createMenuItem(headerMenu, columnDate); final TreeColumn columnOwner = new TreeColumn(tree, SWT.NONE); columnOwner.setText("Owner"); columnOwner.setWidth(0); columnOwner.setResizable(false); createMenuItem(headerMenu, columnOwner); for (int i = 0; i < files.length; i++) { TreeItem item = new TreeItem(tree, SWT.NONE); item.setText(files[i]); TreeItem subItem = new TreeItem(item, SWT.NONE); subItem.setText("node"); } final Menu treeMenu = new Menu(shell, SWT.POP_UP); MenuItem item = new MenuItem(treeMenu, SWT.PUSH); item.setText("Open"); item = new MenuItem(treeMenu, SWT.PUSH); item.setText("Open With"); new MenuItem(treeMenu, SWT.SEPARATOR); item = new MenuItem(treeMenu, SWT.PUSH); item.setText("Cut"); item = new MenuItem(treeMenu, SWT.PUSH); item.setText("Copy"); item = new MenuItem(treeMenu, SWT.PUSH); item.setText("Paste"); new MenuItem(treeMenu, SWT.SEPARATOR); item = new MenuItem(treeMenu, SWT.PUSH); item.setText("Delete"); tree.addListener(SWT.MenuDetect, event -> { Point pt = display.map(null, tree, new Point(event.x, event.y)); Rectangle clientArea = tree.getClientArea(); boolean header = clientArea.y <= pt.y && pt.y < (clientArea.y + tree.getHeaderHeight()); tree.setMenu(header ? headerMenu : treeMenu); }); /* IMPORTANT: Dispose the menus (only the current menu, set with setMenu(), will be automatically disposed) */ tree.addListener(SWT.Dispose, event -> { headerMenu.dispose(); treeMenu.dispose(); }); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } display.dispose(); }
From source file:TreeCellEditor.java
public static void main(String[] args) { final Display display = new Display(); final Color black = display.getSystemColor(SWT.COLOR_BLACK); Shell shell = new Shell(display); shell.setLayout(new FillLayout()); final Tree tree = new Tree(shell, SWT.BORDER); for (int i = 0; i < 16; i++) { TreeItem itemI = new TreeItem(tree, SWT.NONE); itemI.setText("Item " + i); for (int j = 0; j < 16; j++) { TreeItem itemJ = new TreeItem(itemI, SWT.NONE); itemJ.setText("Item " + j); }//from w w w .java2 s. c o m } final TreeItem[] lastItem = new TreeItem[1]; final TreeEditor editor = new TreeEditor(tree); tree.addListener(SWT.Selection, new Listener() { public void handleEvent(Event event) { final TreeItem item = (TreeItem) event.item; if (item != null && item == lastItem[0]) { boolean isCarbon = SWT.getPlatform().equals("carbon"); final Composite composite = new Composite(tree, SWT.NONE); if (!isCarbon) composite.setBackground(black); final Text text = new Text(composite, SWT.NONE); final int inset = isCarbon ? 0 : 1; composite.addListener(SWT.Resize, new Listener() { public void handleEvent(Event e) { Rectangle rect = composite.getClientArea(); text.setBounds(rect.x + inset, rect.y + inset, rect.width - inset * 2, rect.height - inset * 2); } }); Listener textListener = new Listener() { public void handleEvent(final Event e) { switch (e.type) { case SWT.FocusOut: item.setText(text.getText()); composite.dispose(); break; case SWT.Verify: String newText = text.getText(); String leftText = newText.substring(0, e.start); String rightText = newText.substring(e.end, newText.length()); GC gc = new GC(text); Point size = gc.textExtent(leftText + e.text + rightText); gc.dispose(); size = text.computeSize(size.x, SWT.DEFAULT); editor.horizontalAlignment = SWT.LEFT; Rectangle itemRect = item.getBounds(), rect = tree.getClientArea(); editor.minimumWidth = Math.max(size.x, itemRect.width) + inset * 2; int left = itemRect.x, right = rect.x + rect.width; editor.minimumWidth = Math.min(editor.minimumWidth, right - left); editor.minimumHeight = size.y + inset * 2; editor.layout(); break; case SWT.Traverse: switch (e.detail) { case SWT.TRAVERSE_RETURN: item.setText(text.getText()); // FALL THROUGH case SWT.TRAVERSE_ESCAPE: composite.dispose(); e.doit = false; } break; } } }; text.addListener(SWT.FocusOut, textListener); text.addListener(SWT.Traverse, textListener); text.addListener(SWT.Verify, textListener); editor.setEditor(composite, item); text.setText(item.getText()); text.selectAll(); text.setFocus(); } lastItem[0] = item; } }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
From source file:org.eclipse.swt.snippets.Snippet221.java
static void Scroll(Tree tree, int x, int y) { TreeItem item = tree.getItem(new Point(x, y)); if (item == null) return;//w w w . j a v a2 s . co m Rectangle area = tree.getClientArea(); int headerHeight = tree.getHeaderHeight(); int itemHeight = tree.getItemHeight(); TreeItem nextItem = null; if (y < area.y + headerHeight + 2 * itemHeight) { nextItem = PreviousItem(tree, item); } if (y > area.y + area.height - 2 * itemHeight) { nextItem = NextItem(tree, item); } if (nextItem != null) tree.showItem(nextItem); }