public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); shell.setLayout(new FillLayout()); final StyledText styledText = new StyledText(shell, SWT.WRAP | SWT.BORDER); styledText.setText(text); FontData data = display.getSystemFont().getFontData()[0]; Font font = new Font(display, data.getName(), 16, SWT.BOLD); styledText.setFont(font); styledText.setForeground(display.getSystemColor(SWT.COLOR_BLUE)); styledText.addListener( SWT.Resize, new Listener() { public void handleEvent(Event event) { Rectangle rect = styledText.getClientArea(); Image newImage = new Image(display, 1, Math.max(1, rect.height)); GC gc = new GC(newImage); gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE)); gc.setBackground(display.getSystemColor(SWT.COLOR_YELLOW)); gc.fillGradientRectangle(rect.x, rect.y, 1, rect.height, true); gc.dispose(); styledText.setBackgroundImage(newImage); if (oldImage != null) oldImage.dispose(); oldImage = newImage; } }); shell.setSize(700, 400); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } if (oldImage != null) oldImage.dispose(); font.dispose(); display.dispose(); }
/** * Returns the receiver's image data. This is the icon that is associated with the receiver in the * operating system. * * @return the image data for the program, may be null */ public ImageData getImageData() { NSAutoreleasePool pool = (NSAutoreleasePool) new NSAutoreleasePool().alloc().init(); try { NSWorkspace workspace = NSWorkspace.sharedWorkspace(); NSString fullPath; if (this.fullPath != null) { fullPath = NSString.stringWith(this.fullPath); } else { fullPath = workspace.fullPathForApplication(NSString.stringWith(name)); } if (fullPath != null) { NSImage nsImage = workspace.iconForFile(fullPath); if (nsImage != null) { NSSize size = new NSSize(); size.width = size.height = 16; nsImage.setSize(size); nsImage.retain(); Image image = Image.cocoa_new(Display.getCurrent(), SWT.BITMAP, nsImage); ImageData imageData = image.getImageData(); image.dispose(); return imageData; } } return null; } finally { pool.release(); } }
/** Frees the resources */ void freeResources() { if (images != null) { for (Image image : images) { if (image != null) image.dispose(); } images = null; } }
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setLayout(new GridLayout(2, false)); final Text text = new Text(shell, SWT.SEARCH | SWT.ICON_CANCEL); Image image = null; if ((text.getStyle() & SWT.ICON_CANCEL) == 0) { image = display.getSystemImage(SWT.ICON_ERROR); ToolBar toolBar = new ToolBar(shell, SWT.FLAT); ToolItem item = new ToolItem(toolBar, SWT.PUSH); item.setImage(image); item.addSelectionListener( new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { text.setText(""); System.out.println("Search cancelled"); } }); } text.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); text.setText("Search text"); text.addSelectionListener( new SelectionAdapter() { @Override public void widgetDefaultSelected(SelectionEvent e) { if (e.detail == SWT.CANCEL) { System.out.println("Search cancelled"); } else { System.out.println("Searching for: " + text.getText() + "..."); } } }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } if (image != null) image.dispose(); display.dispose(); }
/** * This implementation of <code>nativeToJava</code> converts a platform specific representation of * an image to java <code>ImageData</code>. * * @param transferData the platform specific representation of the data to be converted * @return a java <code>ImageData</code> of the image if the conversion was successful; otherwise * null * @see Transfer#javaToNative */ public Object nativeToJava(TransferData transferData) { ImageData imgData = null; if (transferData.length > 0) { long /*int*/ loader = OS.gdk_pixbuf_loader_new(); try { OS.gdk_pixbuf_loader_write(loader, transferData.pValue, transferData.length, null); OS.gdk_pixbuf_loader_close(loader, null); long /*int*/ pixbuf = OS.gdk_pixbuf_loader_get_pixbuf(loader); if (pixbuf != 0) { Image img = Image.gtk_new_from_pixbuf(Display.getCurrent(), SWT.BITMAP, pixbuf); imgData = img.getImageData(); img.dispose(); } } finally { OS.g_object_unref(loader); } } return imgData; }
public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); shell.setText("Widget"); final Table table = new Table(shell, SWT.MULTI); table.setLinesVisible(true); table.setBounds(10, 10, 100, 100); for (int i = 0; i < 9; i++) { new TableItem(table, SWT.NONE).setText("item" + i); } Button button = new Button(shell, SWT.PUSH); button.setText("Capture"); button.pack(); button.setLocation(10, 140); button.addListener( SWT.Selection, event -> { Point tableSize = table.getSize(); GC gc = new GC(table); final Image image = new Image(display, tableSize.x, tableSize.y); gc.copyArea(image, 0, 0); gc.dispose(); Shell popup = new Shell(shell); popup.setText("Image"); popup.addListener(SWT.Close, e -> image.dispose()); Canvas canvas = new Canvas(popup, SWT.NONE); canvas.setBounds(10, 10, tableSize.x + 10, tableSize.y + 10); canvas.addPaintListener(e -> e.gc.drawImage(image, 0, 0)); popup.pack(); popup.open(); }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
public static void main(String[] args) { final Display display = new Display(); final Image image = new Image(display, 16, 16); GC gc = new GC(image); gc.setBackground(display.getSystemColor(SWT.COLOR_RED)); gc.fillRectangle(image.getBounds()); gc.dispose(); final Shell shell = new Shell(display); shell.setText("Lazy Table"); shell.setLayout(new FillLayout()); final Table table = new Table(shell, SWT.BORDER | SWT.MULTI); table.setSize(200, 200); Thread thread = new Thread() { @Override public void run() { for (int i = 0; i < 20000; i++) { if (table.isDisposed()) return; final int[] index = new int[] {i}; display.syncExec( () -> { if (table.isDisposed()) return; TableItem item = new TableItem(table, SWT.NONE); item.setText("Table Item " + index[0]); item.setImage(image); }); } } }; thread.start(); shell.setSize(200, 200); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } image.dispose(); display.dispose(); }
/** * This implementation of <code>javaToNative</code> converts an ImageData object represented by * java <code>ImageData</code> to a platform specific representation. * * @param object a java <code>ImageData</code> containing the ImageData to be converted * @param transferData an empty <code>TransferData</code> object that will be filled in on return * with the platform specific format of the data * @see Transfer#nativeToJava */ public void javaToNative(Object object, TransferData transferData) { if (!checkImage(object) || !isSupportedType(transferData)) { DND.error(DND.ERROR_INVALID_DATA); } if (OS.GTK_VERSION < OS.VERSION(2, 4, 0)) return; ImageData imgData = (ImageData) object; if (imgData == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); Image image = new Image(Display.getCurrent(), imgData); long /*int*/ pixbuf = ImageList.createPixbuf(image); if (pixbuf != 0) { String typeStr = ""; if (transferData.type == JPEG_ID) typeStr = "jpeg"; else if (transferData.type == PNG_ID) typeStr = "png"; else if (transferData.type == BMP_ID) typeStr = "bmp"; else if (transferData.type == EPS_ID) typeStr = "eps"; else if (transferData.type == PCX_ID) typeStr = "pcx"; else if (transferData.type == PPM_ID) typeStr = "ppm"; else if (transferData.type == RGB_ID) typeStr = "rgb"; else if (transferData.type == TGA_ID) typeStr = "tga"; else if (transferData.type == XBM_ID) typeStr = "xbm"; else if (transferData.type == XPM_ID) typeStr = "xpm"; else if (transferData.type == XV_ID) typeStr = "xv"; byte[] type = Converter.wcsToMbcs(null, typeStr, true); long /*int*/[] buffer = new long /*int*/[1]; long /*int*/[] len = new long /*int*/[1]; if (type == null) return; OS.gdk_pixbuf_save_to_bufferv(pixbuf, buffer, len, type, null, null, null); OS.g_object_unref(pixbuf); transferData.pValue = buffer[0]; transferData.length = (int) (len[0] + 3) / 4 * 4; transferData.result = 1; transferData.format = 32; } image.dispose(); }
public static void main(String[] args) { final Display display = new Display(); final Image image = display.getSystemImage(SWT.ICON_INFORMATION); final Shell shell = new Shell(display, SWT.NO_TRIM); Region region = new Region(); final ImageData imageData = image.getImageData(); if (imageData.alphaData != null) { Rectangle pixel = new Rectangle(0, 0, 1, 1); for (int y = 0; y < imageData.height; y++) { for (int x = 0; x < imageData.width; x++) { if (imageData.getAlpha(x, y) == 255) { pixel.x = imageData.x + x; pixel.y = imageData.y + y; region.add(pixel); } } } } else { ImageData mask = imageData.getTransparencyMask(); Rectangle pixel = new Rectangle(0, 0, 1, 1); for (int y = 0; y < mask.height; y++) { for (int x = 0; x < mask.width; x++) { if (mask.getPixel(x, y) != 0) { pixel.x = imageData.x + x; pixel.y = imageData.y + y; region.add(pixel); } } } } shell.setRegion(region); Listener l = new Listener() { /** The x/y of the MouseDown, relative to top-left of the shell. */ int startX, startY; @Override public void handleEvent(Event e) { if (e.type == SWT.KeyDown && e.character == SWT.ESC) { shell.dispose(); } if (e.type == SWT.MouseDown && e.button == 1) { Point p = shell.toDisplay(e.x, e.y); Point loc = shell.getLocation(); startX = p.x - loc.x; startY = p.y - loc.y; } if (e.type == SWT.MouseMove && (e.stateMask & SWT.BUTTON1) != 0) { Point p = shell.toDisplay(e.x, e.y); p.x -= startX; p.y -= startY; shell.setLocation(p); } if (e.type == SWT.Paint) { e.gc.drawImage(image, imageData.x, imageData.y); } } }; shell.addListener(SWT.KeyDown, l); shell.addListener(SWT.MouseDown, l); shell.addListener(SWT.MouseMove, l); shell.addListener(SWT.Paint, l); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } region.dispose(); image.dispose(); display.dispose(); }
Image getDragSourceImage(DragSourceEvent event) { if (dragSourceImage != null) dragSourceImage.dispose(); dragSourceImage = null; Table table = (Table) control; if (OS.GTK_VERSION < OS.VERSION(2, 2, 0)) return null; // TEMPORARY CODE if (table.isListening(SWT.EraseItem) || table.isListening(SWT.PaintItem)) return null; /* * Bug in GTK. gtk_tree_selection_get_selected_rows() segmentation faults * in versions smaller than 2.2.4 if the model is NULL. The fix is * to give a valid pointer instead. */ long /*int*/ handle = table.handle; long /*int*/ selection = OS.gtk_tree_view_get_selection(handle); long /*int*/[] model = OS.GTK_VERSION < OS.VERSION(2, 2, 4) ? new long /*int*/[1] : null; long /*int*/ list = OS.gtk_tree_selection_get_selected_rows(selection, model); if (list == 0) return null; int count = Math.min(10, OS.g_list_length(list)); Display display = table.getDisplay(); if (count == 1) { long /*int*/ path = OS.g_list_nth_data(list, 0); long /*int*/ pixmap = OS.gtk_tree_view_create_row_drag_icon(handle, path); dragSourceImage = Image.gtk_new(display, SWT.ICON, pixmap, 0); } else { int width = 0, height = 0; int[] w = new int[1], h = new int[1]; int[] yy = new int[count], hh = new int[count]; long /*int*/[] pixmaps = new long /*int*/[count]; GdkRectangle rect = new GdkRectangle(); for (int i = 0; i < count; i++) { long /*int*/ path = OS.g_list_nth_data(list, i); OS.gtk_tree_view_get_cell_area(handle, path, 0, rect); pixmaps[i] = OS.gtk_tree_view_create_row_drag_icon(handle, path); OS.gdk_drawable_get_size(pixmaps[i], w, h); width = Math.max(width, w[0]); height = rect.y + h[0] - yy[0]; yy[i] = rect.y; hh[i] = h[0]; } long /*int*/ source = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), width, height, -1); long /*int*/ gcSource = OS.gdk_gc_new(source); long /*int*/ mask = OS.gdk_pixmap_new(OS.GDK_ROOT_PARENT(), width, height, 1); long /*int*/ gcMask = OS.gdk_gc_new(mask); GdkColor color = new GdkColor(); color.pixel = 0; OS.gdk_gc_set_foreground(gcMask, color); OS.gdk_draw_rectangle(mask, gcMask, 1, 0, 0, width, height); color.pixel = 1; OS.gdk_gc_set_foreground(gcMask, color); for (int i = 0; i < count; i++) { OS.gdk_draw_drawable(source, gcSource, pixmaps[i], 0, 0, 0, yy[i] - yy[0], -1, -1); OS.gdk_draw_rectangle(mask, gcMask, 1, 0, yy[i] - yy[0], width, hh[i]); OS.g_object_unref(pixmaps[i]); } OS.g_object_unref(gcSource); OS.g_object_unref(gcMask); dragSourceImage = Image.gtk_new(display, SWT.ICON, source, mask); } OS.g_list_free(list); return dragSourceImage; }
/** * This implementation of <code>dragFinished</code> disposes the image that was created in <code> * TableDragSourceEffect.dragStart</code>. * * <p>Subclasses that override this method should call <code>super.dragFinished(event)</code> to * dispose the image in the default implementation. * * @param event the information associated with the drag finished event */ public void dragFinished(DragSourceEvent event) { if (dragSourceImage != null) dragSourceImage.dispose(); dragSourceImage = null; }
public static void main(String[] args) { Shell shell = new Shell(); Display display = shell.getDisplay(); shell.setLayout(new FillLayout()); shell.setText("ExpandBar Example"); Menu menubar = new Menu(shell, SWT.BAR); shell.setMenuBar(menubar); MenuItem fileItem = new MenuItem(menubar, SWT.CASCADE); fileItem.setText("&File"); Menu submenu = new Menu(shell, SWT.DROP_DOWN); fileItem.setMenu(submenu); item = new MenuItem(submenu, SWT.PUSH); item.setText("New ExpandItem"); bar = new ExpandBar(shell, SWT.V_SCROLL); image = display.getSystemImage(SWT.ICON_QUESTION); // First item Composite composite = new Composite(bar, SWT.NONE); Menu popupmenu = new Menu(shell, SWT.POP_UP); MenuItem popupItem = new MenuItem(popupmenu, SWT.PUSH); popupItem.setText("Popup"); composite.setMenu(popupmenu); GridLayout layout = new GridLayout(2, false); layout.marginLeft = layout.marginTop = layout.marginRight = layout.marginBottom = 10; layout.verticalSpacing = 10; composite.setLayout(layout); Label label = new Label(composite, SWT.NONE); label.setImage(display.getSystemImage(SWT.ICON_ERROR)); label = new Label(composite, SWT.NONE); label.setText("SWT.ICON_ERROR"); label = new Label(composite, SWT.NONE); label.setImage(display.getSystemImage(SWT.ICON_INFORMATION)); label = new Label(composite, SWT.NONE); label.setText("SWT.ICON_INFORMATION"); label = new Label(composite, SWT.NONE); label.setImage(display.getSystemImage(SWT.ICON_WARNING)); label = new Label(composite, SWT.NONE); label.setText("SWT.ICON_WARNING"); label = new Label(composite, SWT.NONE); label.setImage(display.getSystemImage(SWT.ICON_QUESTION)); label = new Label(composite, SWT.NONE); label.setText("SWT.ICON_QUESTION"); ExpandItem item1 = new ExpandItem(bar, SWT.NONE); item1.setText("What is your favorite icon"); item1.setHeight(composite.computeSize(SWT.DEFAULT, SWT.DEFAULT).y); item1.setControl(composite); item1.setImage(image); // Second item composite = new Composite(bar, SWT.NONE); layout = new GridLayout(2, true); layout.marginLeft = layout.marginTop = layout.marginRight = layout.marginBottom = 10; layout.verticalSpacing = 10; composite.setLayout(layout); Button button1 = new Button(composite, SWT.PUSH); button1.setText("Button 1"); Button button2 = new Button(composite, SWT.PUSH); button2.setText("Button 2"); ExpandItem item0 = new ExpandItem(bar, SWT.NONE); item0.setText("What is your favorite button"); item0.setHeight(composite.computeSize(SWT.DEFAULT, SWT.DEFAULT).y); item0.setControl(composite); item0.setImage(image); item0.setExpanded(false); item.addListener( SWT.Selection, new Listener() { @Override public void handleEvent(Event e) { ExpandItem item2 = new ExpandItem(bar, SWT.NONE); Composite composite = new Composite(bar, SWT.NONE); GridLayout layout = new GridLayout(2, false); composite.setLayout(layout); Label label = new Label(composite, SWT.NONE); label.setText("What is your name?"); Composite pcomposite = new Composite(composite, SWT.NONE); Text text = new Text(pcomposite, SWT.NONE); item2.setText("New Question"); text.pack(); composite.pack(); Point size = composite.computeSize(SWT.DEFAULT, SWT.DEFAULT); item2.setHeight(size.y); item2.setControl(composite); item2.setImage(image); item2.setExpanded(true); } }); bar.setSpacing(8); shell.setSize(400, 550); shell.open(); System.out.println("------------------------------"); System.out.println("getSize: " + button1.getSize()); System.out.println("getBounds: " + button1.getBounds()); System.out.println("computeSize: " + button1.computeSize(SWT.DEFAULT, SWT.DEFAULT)); System.out.println("getLocation: " + button1.getLocation()); while (!shell.isDisposed()) { if (!display.readAndDispatch()) { display.sleep(); } } image.dispose(); display.dispose(); }
public static void main(String[] args) { final Display display = new Display(); final Clipboard clipboard = new Clipboard(display); final Shell shell = new Shell(display, SWT.SHELL_TRIM); shell.setLayout(new GridLayout()); shell.setText("Clipboard ImageTransfer"); final Button imageButton = new Button(shell, SWT.NONE); GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true); gd.minimumHeight = 400; gd.minimumWidth = 600; imageButton.setLayoutData(gd); final Text imageText = new Text(shell, SWT.BORDER); imageText.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); Composite buttons = new Composite(shell, SWT.NONE); buttons.setLayout(new GridLayout(4, true)); Button button = new Button(buttons, SWT.PUSH); button.setText("Open"); button.addListener( SWT.Selection, event -> { FileDialog dialog = new FileDialog(shell, SWT.OPEN); dialog.setText("Open an image file or cancel"); String string = dialog.open(); if (string != null) { imageButton.setText(""); Image image = imageButton.getImage(); if (image != null) image.dispose(); image = new Image(display, string); imageButton.setImage(image); imageText.setText(string); } }); button = new Button(buttons, SWT.PUSH); button.setText("Copy"); button.addListener( SWT.Selection, event -> { Image image = imageButton.getImage(); if (image != null) { ImageTransfer imageTransfer = ImageTransfer.getInstance(); TextTransfer textTransfer = TextTransfer.getInstance(); clipboard.setContents( new Object[] {image.getImageData(), imageText.getText()}, new Transfer[] {imageTransfer, textTransfer}); } }); button = new Button(buttons, SWT.PUSH); button.setText("Paste"); button.addListener( SWT.Selection, event -> { ImageData imageData = (ImageData) clipboard.getContents(ImageTransfer.getInstance()); if (imageData != null) { imageButton.setText(""); Image image = imageButton.getImage(); if (image != null) image.dispose(); image = new Image(display, imageData); imageButton.setImage(image); } else { imageButton.setText("No image"); imageButton.setImage(null); } String text = (String) clipboard.getContents(TextTransfer.getInstance()); if (text != null) { imageText.setText(text); } else { imageText.setText(""); } }); button = new Button(buttons, SWT.PUSH); button.setText("Clear"); button.addListener( SWT.Selection, event -> { imageButton.setText(""); Image image = imageButton.getImage(); if (image != null) image.dispose(); imageButton.setImage(null); imageText.setText(""); }); shell.pack(); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }