use of org.eclipse.swt.widgets.ScrollBar in project tdi-studio-se by Talend.
the class UIManager method setPositionOfVerticalScrollBarZone.
public void setPositionOfVerticalScrollBarZone(ScrolledComposite scrollComposite, int scrollBarSelection) {
ScrollBar verticalBar = scrollComposite.getVerticalBar();
verticalBar.setSelection(scrollBarSelection);
scrollComposite.setOrigin(0, scrollBarSelection);
}
use of org.eclipse.swt.widgets.ScrollBar in project eclipse.platform.swt by eclipse.
the class CTable method removeAll.
/**
* Removes all of the items from the receiver.
*
* @exception 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 removeAll() {
checkWidget();
if (itemsCount == 0)
return;
setRedraw(false);
setFocusItem(null, false);
for (int i = 0; i < itemsCount; i++) {
items[i].dispose(false);
}
items = new CTableItem[0];
selectedItems = new CTableItem[0];
int oldCount = itemsCount;
itemsCount = topIndex = 0;
anchorItem = lastClickedItem = null;
lastSelectionEvent = null;
int[] eventData = new int[5];
eventData[0] = ACC.DELETE;
eventData[1] = 0;
eventData[2] = oldCount;
eventData[3] = 0;
eventData[4] = 0;
getAccessible().sendEvent(ACC.EVENT_TABLE_CHANGED, eventData);
ScrollBar vBar = getVerticalBar();
if (vBar != null) {
vBar.setMaximum(1);
vBar.setVisible(false);
}
if (columns.length == 0) {
horizontalOffset = 0;
ScrollBar hBar = getHorizontalBar();
if (hBar != null) {
hBar.setMaximum(1);
hBar.setVisible(false);
}
}
setRedraw(true);
}
use of org.eclipse.swt.widgets.ScrollBar in project eclipse.platform.swt by eclipse.
the class CTable method updateHorizontalBar.
/*
* Update the horizontal bar, if needed, in response to an item change (eg.- created,
* disposed, expanded, etc.). newRightX is the new rightmost X value of the item,
* and rightXchange is the change that led to the item's rightmost X value becoming
* newRightX (so oldRightX + rightXchange = newRightX)
*/
void updateHorizontalBar(int newRightX, int rightXchange) {
if (drawCount > 0)
return;
ScrollBar hBar = getHorizontalBar();
if (hBar == null)
return;
newRightX += horizontalOffset;
int barMaximum = hBar.getMaximum();
if (newRightX > barMaximum) {
/* item has extended beyond previous maximum */
hBar.setMaximum(newRightX);
int clientAreaWidth = clientArea.width;
int thumb = Math.min(newRightX, clientAreaWidth);
hBar.setThumb(thumb);
hBar.setPageIncrement(thumb);
hBar.setVisible(clientAreaWidth <= newRightX);
return;
}
int previousRightX = newRightX - rightXchange;
if (previousRightX != barMaximum) {
/* this was not the rightmost item, so just check for client width change */
int clientAreaWidth = clientArea.width;
int thumb = Math.min(barMaximum, clientAreaWidth);
hBar.setThumb(thumb);
hBar.setPageIncrement(thumb);
hBar.setVisible(clientAreaWidth <= barMaximum);
return;
}
updateHorizontalBar();
/* must search for the new rightmost item */
}
use of org.eclipse.swt.widgets.ScrollBar in project eclipse.platform.swt by eclipse.
the class CTable method updateColumnWidth.
void updateColumnWidth(CTableColumn column, int width) {
headerHideToolTip();
int oldWidth = column.width;
int columnX = column.getX();
int x = columnX + oldWidth - 1;
/* -1 ensures that grid line is included */
update();
GC gc = new GC(this);
gc.copyArea(x, 0, clientArea.width - x, clientArea.height, columnX + width - 1, 0);
/* dest x -1 offsets x's -1 above */
if (width > oldWidth) {
/* column width grew */
int change = width - oldWidth + 1;
/* +1 offsets x's -1 above */
/* -1/+1 below ensure that right bound of selection redraws correctly in column */
redraw(x - 1, 0, change + 1, clientArea.height, false);
} else {
int change = oldWidth - width + 1;
/* +1 offsets x's -1 above */
redraw(clientArea.width - change, 0, change, clientArea.height, false);
}
/* the focus box must be repainted because its stipple may become shifted as a result of its new width */
if (focusItem != null)
redrawItem(focusItem.index, true);
GC headerGC = new GC(header);
if (drawCount <= 0 && header.getVisible()) {
Rectangle headerBounds = header.getClientArea();
header.update();
x -= 1;
/* -1 ensures that full header column separator is included */
headerGC.copyArea(x, 0, headerBounds.width - x, headerBounds.height, columnX + width - 2, 0);
/* dest x -2 offsets x's -1s above */
if (width > oldWidth) {
/* column width grew */
int change = width - oldWidth + 2;
/* +2 offsets x's -1s above */
header.redraw(x, 0, change, headerBounds.height, false);
} else {
int change = oldWidth - width + 2;
/* +2 offsets x's -1s above */
header.redraw(headerBounds.width - change, 0, change, headerBounds.height, false);
}
}
column.width = width;
/*
* Notify column and all items of column width change so that display labels
* can be recomputed if needed.
*/
column.updateWidth(headerGC);
headerGC.dispose();
for (int i = 0; i < itemsCount; i++) {
items[i].updateColumnWidth(column, gc);
}
gc.dispose();
int maximum = 0;
for (CTableColumn column2 : columns) {
maximum += column2.width;
}
ScrollBar hBar = getHorizontalBar();
if (hBar != null) {
hBar.setMaximum(Math.max(1, maximum));
/* setting a value of 0 here is ignored */
if (hBar.getThumb() != clientArea.width) {
hBar.setThumb(clientArea.width);
hBar.setPageIncrement(clientArea.width);
}
int oldHorizontalOffset = horizontalOffset;
/* hBar.setVisible() can modify horizontalOffset */
hBar.setVisible(clientArea.width < maximum);
int selection = hBar.getSelection();
if (selection != oldHorizontalOffset) {
horizontalOffset = selection;
redraw();
if (drawCount <= 0 && header.getVisible())
header.redraw();
}
}
column.notifyListeners(SWT.Resize, new Event());
CTableColumn[] orderedColumns = getOrderedColumns();
for (int i = column.getOrderIndex() + 1; i < orderedColumns.length; i++) {
if (!orderedColumns[i].isDisposed()) {
orderedColumns[i].notifyListeners(SWT.Move, new Event());
}
}
if (itemsCount == 0)
redraw();
/* ensure that static focus rectangle updates properly */
}
use of org.eclipse.swt.widgets.ScrollBar in project eclipse.platform.swt by eclipse.
the class ClipboardExample method createImageTransfer.
void createImageTransfer(Composite copyParent, Composite pasteParent) {
final Image[] copyImage = new Image[] { null };
Label l = new Label(copyParent, SWT.NONE);
// $NON-NLS-1$
l.setText("ImageTransfer:");
GridData data = new GridData();
data.verticalSpan = 2;
l.setLayoutData(data);
final Canvas copyImageCanvas = new Canvas(copyParent, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
data = new GridData(GridData.FILL_BOTH);
data.verticalSpan = 2;
data.widthHint = HSIZE;
data.heightHint = VSIZE;
copyImageCanvas.setLayoutData(data);
final Point copyOrigin = new Point(0, 0);
final ScrollBar copyHBar = copyImageCanvas.getHorizontalBar();
copyHBar.setEnabled(false);
copyHBar.addListener(SWT.Selection, e -> {
if (copyImage[0] != null) {
int hSelection = copyHBar.getSelection();
int destX = -hSelection - copyOrigin.x;
Rectangle rect = copyImage[0].getBounds();
copyImageCanvas.scroll(destX, 0, 0, 0, rect.width, rect.height, false);
copyOrigin.x = -hSelection;
}
});
final ScrollBar copyVBar = copyImageCanvas.getVerticalBar();
copyVBar.setEnabled(false);
copyVBar.addListener(SWT.Selection, e -> {
if (copyImage[0] != null) {
int vSelection = copyVBar.getSelection();
int destY = -vSelection - copyOrigin.y;
Rectangle rect = copyImage[0].getBounds();
copyImageCanvas.scroll(0, destY, 0, 0, rect.width, rect.height, false);
copyOrigin.y = -vSelection;
}
});
copyImageCanvas.addListener(SWT.Paint, e -> {
if (copyImage[0] != null) {
GC gc = e.gc;
gc.drawImage(copyImage[0], copyOrigin.x, copyOrigin.y);
Rectangle rect = copyImage[0].getBounds();
Rectangle client = copyImageCanvas.getClientArea();
int marginWidth = client.width - rect.width;
if (marginWidth > 0) {
gc.fillRectangle(rect.width, 0, marginWidth, client.height);
}
int marginHeight = client.height - rect.height;
if (marginHeight > 0) {
gc.fillRectangle(0, rect.height, client.width, marginHeight);
}
gc.dispose();
}
});
Button openButton = new Button(copyParent, SWT.PUSH);
openButton.setText("Open Image");
openButton.addSelectionListener(widgetSelectedAdapter(e -> {
FileDialog dialog = new FileDialog(shell, SWT.OPEN);
dialog.setText("Open an image file or cancel");
String string = dialog.open();
if (string != null) {
if (copyImage[0] != null) {
System.out.println("CopyImage");
copyImage[0].dispose();
}
copyImage[0] = new Image(e.display, string);
copyVBar.setEnabled(true);
copyHBar.setEnabled(true);
copyOrigin.x = 0;
copyOrigin.y = 0;
Rectangle rect = copyImage[0].getBounds();
Rectangle client = copyImageCanvas.getClientArea();
copyHBar.setMaximum(rect.width);
copyVBar.setMaximum(rect.height);
copyHBar.setThumb(Math.min(rect.width, client.width));
copyVBar.setThumb(Math.min(rect.height, client.height));
copyImageCanvas.scroll(0, 0, 0, 0, rect.width, rect.height, true);
copyVBar.setSelection(0);
copyHBar.setSelection(0);
copyImageCanvas.redraw();
}
}));
Button b = new Button(copyParent, SWT.PUSH);
b.setText("Copy");
b.addSelectionListener(widgetSelectedAdapter(e -> {
if (copyImage[0] != null) {
status.setText("");
// Fetch ImageData at current zoom and save in the clip-board.
clipboard.setContents(new Object[] { copyImage[0].getImageDataAtCurrentZoom() }, new Transfer[] { ImageTransfer.getInstance() });
} else {
status.setText("No image to copy");
}
}));
final Image[] pasteImage = new Image[] { null };
l = new Label(pasteParent, SWT.NONE);
l.setText("ImageTransfer:");
final Canvas pasteImageCanvas = new Canvas(pasteParent, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
data = new GridData(GridData.FILL_BOTH);
data.widthHint = HSIZE;
data.heightHint = VSIZE;
pasteImageCanvas.setLayoutData(data);
final Point pasteOrigin = new Point(0, 0);
final ScrollBar pasteHBar = pasteImageCanvas.getHorizontalBar();
pasteHBar.setEnabled(false);
pasteHBar.addListener(SWT.Selection, e -> {
if (pasteImage[0] != null) {
int hSelection = pasteHBar.getSelection();
int destX = -hSelection - pasteOrigin.x;
Rectangle rect = pasteImage[0].getBounds();
pasteImageCanvas.scroll(destX, 0, 0, 0, rect.width, rect.height, false);
pasteOrigin.x = -hSelection;
}
});
final ScrollBar pasteVBar = pasteImageCanvas.getVerticalBar();
pasteVBar.setEnabled(false);
pasteVBar.addListener(SWT.Selection, e -> {
if (pasteImage[0] != null) {
int vSelection = pasteVBar.getSelection();
int destY = -vSelection - pasteOrigin.y;
Rectangle rect = pasteImage[0].getBounds();
pasteImageCanvas.scroll(0, destY, 0, 0, rect.width, rect.height, false);
pasteOrigin.y = -vSelection;
}
});
pasteImageCanvas.addListener(SWT.Paint, e -> {
if (pasteImage[0] != null) {
GC gc = e.gc;
gc.drawImage(pasteImage[0], pasteOrigin.x, pasteOrigin.y);
Rectangle rect = pasteImage[0].getBounds();
Rectangle client = pasteImageCanvas.getClientArea();
int marginWidth = client.width - rect.width;
if (marginWidth > 0) {
gc.fillRectangle(rect.width, 0, marginWidth, client.height);
}
int marginHeight = client.height - rect.height;
if (marginHeight > 0) {
gc.fillRectangle(0, rect.height, client.width, marginHeight);
}
}
});
b = new Button(pasteParent, SWT.PUSH);
b.setText("Paste");
b.addSelectionListener(widgetSelectedAdapter(e -> {
ImageData imageData = (ImageData) clipboard.getContents(ImageTransfer.getInstance());
if (imageData != null) {
if (pasteImage[0] != null) {
System.out.println("PasteImage");
pasteImage[0].dispose();
}
status.setText("");
// Consume the ImageData at current zoom as-is.
pasteImage[0] = new Image(e.display, new AutoScaleImageDataProvider(imageData));
pasteVBar.setEnabled(true);
pasteHBar.setEnabled(true);
pasteOrigin.x = 0;
pasteOrigin.y = 0;
Rectangle rect = pasteImage[0].getBounds();
Rectangle client = pasteImageCanvas.getClientArea();
pasteHBar.setMaximum(rect.width);
pasteVBar.setMaximum(rect.height);
pasteHBar.setThumb(Math.min(rect.width, client.width));
pasteVBar.setThumb(Math.min(rect.height, client.height));
pasteImageCanvas.scroll(0, 0, 0, 0, rect.width, rect.height, true);
pasteVBar.setSelection(0);
pasteHBar.setSelection(0);
pasteImageCanvas.redraw();
} else {
status.setText("No image to paste");
}
}));
}
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