/**
* 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) {
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();
}
/**
* 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) {
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();
}
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();
}
/** Compute the minimum size. */
private Point getTotalSize(Image image, String text) {
Point size = new Point(0, 0);
if (image != null) {
Rectangle r = image.getBounds();
size.x += r.width;
size.y += r.height;
}
GC gc = new GC(this);
if (text != null && text.length() > 0) {
Point e = gc.textExtent(text, DRAW_FLAGS);
size.x += e.x;
size.y = Math.max(size.y, e.y);
if (image != null) size.x += GAP;
} else {
size.y = Math.max(size.y, gc.getFontMetrics().getHeight());
}
gc.dispose();
return size;
}
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();
}
void paint(Event event) {
if (row == null) return;
int columnIndex = column == null ? 0 : table.indexOf(column);
GC gc = event.gc;
gc.setBackground(getBackground());
gc.setForeground(getForeground());
gc.fillRectangle(event.x, event.y, event.width, event.height);
int x = 0;
Point size = getSize();
Image image = row.getImage(columnIndex);
if (image != null) {
Rectangle imageSize = image.getBounds();
int imageY = (size.y - imageSize.height) / 2;
gc.drawImage(image, x, imageY);
x += imageSize.width;
}
String text = row.getText(columnIndex);
if (text.length() > 0) {
Rectangle bounds = row.getBounds(columnIndex);
Point extent = gc.stringExtent(text);
// Temporary code - need a better way to determine table trim
String platform = SWT.getPlatform();
if ("win32".equals(platform)) { // $NON-NLS-1$
if (table.getColumnCount() == 0 || columnIndex == 0) {
x += 2;
} else {
int alignmnent = column.getAlignment();
switch (alignmnent) {
case SWT.LEFT:
x += 6;
break;
case SWT.RIGHT:
x = bounds.width - extent.x - 6;
break;
case SWT.CENTER:
x += (bounds.width - x - extent.x) / 2;
break;
}
}
} else {
if (table.getColumnCount() == 0) {
x += 5;
} else {
int alignmnent = column.getAlignment();
switch (alignmnent) {
case SWT.LEFT:
x += 5;
break;
case SWT.RIGHT:
x = bounds.width - extent.x - 2;
break;
case SWT.CENTER:
x += (bounds.width - x - extent.x) / 2 + 2;
break;
}
}
}
int textY = (size.y - extent.y) / 2;
gc.drawString(text, x, textY);
}
if (isFocusControl()) {
Display display = getDisplay();
gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
gc.drawFocus(0, 0, size.x, size.y);
}
}
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();
}
void onPaint(PaintEvent event) {
Rectangle rect = getClientArea();
if (rect.width == 0 || rect.height == 0) return;
boolean shortenText = false;
String t = text;
Image img = image;
int availableWidth = Math.max(0, rect.width - (leftMargin + rightMargin));
Point extent = getTotalSize(img, t);
if (extent.x > availableWidth) {
img = null;
extent = getTotalSize(img, t);
if (extent.x > availableWidth) {
shortenText = true;
}
}
GC gc = event.gc;
String[] lines = text == null ? null : splitString(text);
// shorten the text
if (shortenText) {
extent.x = 0;
for (int i = 0; i < lines.length; i++) {
Point e = gc.textExtent(lines[i], DRAW_FLAGS);
if (e.x > availableWidth) {
lines[i] = shortenText(gc, lines[i], availableWidth);
extent.x = Math.max(extent.x, getTotalSize(null, lines[i]).x);
} else {
extent.x = Math.max(extent.x, e.x);
}
}
if (appToolTipText == null) {
super.setToolTipText(text);
}
} else {
super.setToolTipText(appToolTipText);
}
// determine horizontal position
int x = rect.x + leftMargin;
if (align == SWT.CENTER) {
x = (rect.width - extent.x) / 2;
}
if (align == SWT.RIGHT) {
x = rect.width - rightMargin - extent.x;
}
// draw a background image behind the text
try {
if (backgroundImage != null) {
// draw a background image behind the text
Rectangle imageRect = backgroundImage.getBounds();
// tile image to fill space
gc.setBackground(getBackground());
gc.fillRectangle(rect);
int xPos = 0;
while (xPos < rect.width) {
int yPos = 0;
while (yPos < rect.height) {
gc.drawImage(backgroundImage, xPos, yPos);
yPos += imageRect.height;
}
xPos += imageRect.width;
}
} else if (gradientColors != null) {
// draw a gradient behind the text
final Color oldBackground = gc.getBackground();
if (gradientColors.length == 1) {
if (gradientColors[0] != null) gc.setBackground(gradientColors[0]);
gc.fillRectangle(0, 0, rect.width, rect.height);
} else {
final Color oldForeground = gc.getForeground();
Color lastColor = gradientColors[0];
if (lastColor == null) lastColor = oldBackground;
int pos = 0;
for (int i = 0; i < gradientPercents.length; ++i) {
gc.setForeground(lastColor);
lastColor = gradientColors[i + 1];
if (lastColor == null) lastColor = oldBackground;
gc.setBackground(lastColor);
if (gradientVertical) {
final int gradientHeight = (gradientPercents[i] * rect.height / 100) - pos;
gc.fillGradientRectangle(0, pos, rect.width, gradientHeight, true);
pos += gradientHeight;
} else {
final int gradientWidth = (gradientPercents[i] * rect.width / 100) - pos;
gc.fillGradientRectangle(pos, 0, gradientWidth, rect.height, false);
pos += gradientWidth;
}
}
if (gradientVertical && pos < rect.height) {
gc.setBackground(getBackground());
gc.fillRectangle(0, pos, rect.width, rect.height - pos);
}
if (!gradientVertical && pos < rect.width) {
gc.setBackground(getBackground());
gc.fillRectangle(pos, 0, rect.width - pos, rect.height);
}
gc.setForeground(oldForeground);
}
gc.setBackground(oldBackground);
} else {
if (background != null || (getStyle() & SWT.DOUBLE_BUFFERED) == 0) {
gc.setBackground(getBackground());
gc.fillRectangle(rect);
}
}
} catch (SWTException e) {
if ((getStyle() & SWT.DOUBLE_BUFFERED) == 0) {
gc.setBackground(getBackground());
gc.fillRectangle(rect);
}
}
// draw border
int style = getStyle();
if ((style & SWT.SHADOW_IN) != 0 || (style & SWT.SHADOW_OUT) != 0) {
paintBorder(gc, rect);
}
/*
* Compute text height and image height. If image height is more than
* the text height, draw image starting from top margin. Else draw text
* starting from top margin.
*/
Rectangle imageRect = null;
int lineHeight = 0, textHeight = 0, imageHeight = 0;
if (img != null) {
imageRect = img.getBounds();
imageHeight = imageRect.height;
}
if (lines != null) {
lineHeight = gc.getFontMetrics().getHeight();
textHeight = lines.length * lineHeight;
}
int imageY = 0, midPoint = 0, lineY = 0;
if (imageHeight > textHeight) {
if (topMargin == DEFAULT_MARGIN && bottomMargin == DEFAULT_MARGIN)
imageY = rect.y + (rect.height - imageHeight) / 2;
else imageY = topMargin;
midPoint = imageY + imageHeight / 2;
lineY = midPoint - textHeight / 2;
} else {
if (topMargin == DEFAULT_MARGIN && bottomMargin == DEFAULT_MARGIN)
lineY = rect.y + (rect.height - textHeight) / 2;
else lineY = topMargin;
midPoint = lineY + textHeight / 2;
imageY = midPoint - imageHeight / 2;
}
// draw the image
if (img != null) {
gc.drawImage(
img, 0, 0, imageRect.width, imageHeight, x, imageY, imageRect.width, imageHeight);
x += imageRect.width + GAP;
extent.x -= imageRect.width + GAP;
}
// draw the text
if (lines != null) {
gc.setForeground(getForeground());
for (int i = 0; i < lines.length; i++) {
int lineX = x;
if (lines.length > 1) {
if (align == SWT.CENTER) {
int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x;
lineX = x + Math.max(0, (extent.x - lineWidth) / 2);
}
if (align == SWT.RIGHT) {
int lineWidth = gc.textExtent(lines[i], DRAW_FLAGS).x;
lineX = Math.max(x, rect.x + rect.width - rightMargin - lineWidth);
}
}
gc.drawText(lines[i], lineX, lineY, DRAW_FLAGS);
lineY += lineHeight;
}
}
}
private void drag(Event dragEvent) {
DNDEvent event = new DNDEvent();
event.widget = this;
event.x = dragEvent.x;
event.y = dragEvent.y;
event.time = OS.GetMessageTime();
event.doit = true;
notifyListeners(DND.DragStart, event);
if (!event.doit || transferAgents == null || transferAgents.length == 0) return;
int[] pdwEffect = new int[1];
int operations = opToOs(getStyle());
Display display = control.getDisplay();
String key = "org.eclipse.swt.internal.win32.runMessagesInIdle"; // $NON-NLS-1$
Object oldValue = display.getData(key);
display.setData(key, Boolean.TRUE);
ImageList imagelist = null;
Image image = event.image;
hwndDrag = 0;
topControl = null;
if (image != null) {
imagelist = new ImageList(SWT.NONE);
imagelist.add(image);
topControl = control.getShell();
/*
* Bug in Windows. The image is inverted if the shell is RIGHT_TO_LEFT.
* The fix is to create a transparent window that covers the shell client
* area and use it during the drag to prevent the image from being inverted.
* On XP if the shell is RTL, the image is not displayed.
*/
int offsetX = event.offsetX;
hwndDrag = topControl.handle;
if ((topControl.getStyle() & SWT.RIGHT_TO_LEFT) != 0) {
offsetX = image.getBounds().width - offsetX;
RECT rect = new RECT();
OS.GetClientRect(topControl.handle, rect);
hwndDrag =
OS.CreateWindowEx(
OS.WS_EX_TRANSPARENT | OS.WS_EX_NOINHERITLAYOUT,
WindowClass,
null,
OS.WS_CHILD | OS.WS_CLIPSIBLINGS,
0,
0,
rect.right - rect.left,
rect.bottom - rect.top,
topControl.handle,
0,
OS.GetModuleHandle(null),
null);
OS.ShowWindow(hwndDrag, OS.SW_SHOW);
}
OS.ImageList_BeginDrag(imagelist.getHandle(), 0, offsetX, event.offsetY);
/*
* Feature in Windows. When ImageList_DragEnter() is called,
* it takes a snapshot of the screen If a drag is started
* when another window is in front, then the snapshot will
* contain part of the other window, causing pixel corruption.
* The fix is to force all paints to be delivered before
* calling ImageList_DragEnter().
*/
if (OS.IsWinCE) {
OS.UpdateWindow(topControl.handle);
} else {
int flags = OS.RDW_UPDATENOW | OS.RDW_ALLCHILDREN;
OS.RedrawWindow(topControl.handle, null, 0, flags);
}
POINT pt = new POINT();
pt.x = dragEvent.x;
pt.y = dragEvent.y;
OS.MapWindowPoints(control.handle, 0, pt, 1);
RECT rect = new RECT();
OS.GetWindowRect(hwndDrag, rect);
OS.ImageList_DragEnter(hwndDrag, pt.x - rect.left, pt.y - rect.top);
}
int result = COM.DRAGDROP_S_CANCEL;
try {
result =
COM.DoDragDrop(iDataObject.getAddress(), iDropSource.getAddress(), operations, pdwEffect);
} finally {
// ensure that we don't leave transparent window around
if (hwndDrag != 0) {
OS.ImageList_DragLeave(hwndDrag);
OS.ImageList_EndDrag();
imagelist.dispose();
if (hwndDrag != topControl.handle) OS.DestroyWindow(hwndDrag);
hwndDrag = 0;
topControl = null;
}
display.setData(key, oldValue);
}
int operation = osToOp(pdwEffect[0]);
if (dataEffect == DND.DROP_MOVE) {
operation =
(operation == DND.DROP_NONE || operation == DND.DROP_COPY)
? DND.DROP_TARGET_MOVE
: DND.DROP_MOVE;
} else {
if (dataEffect != DND.DROP_NONE) {
operation = dataEffect;
}
}
event = new DNDEvent();
event.widget = this;
event.time = OS.GetMessageTime();
event.doit = (result == COM.DRAGDROP_S_DROP);
event.detail = operation;
notifyListeners(DND.DragEnd, event);
dataEffect = DND.DROP_NONE;
}
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();
}
