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

Example 71 with ScrollBar

use of org.eclipse.swt.widgets.ScrollBar in project usbdm-eclipse-plugins by podonoghue.

the class ImageCanvas method initScrollBars.

/**
 *  Initialise the scroll-bar and register listeners.
 */
private void initScrollBars() {
    ScrollBar horizontal = getHorizontalBar();
    horizontal.setEnabled(false);
    horizontal.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent event) {
            scrollHorizontally((ScrollBar) event.widget);
        }
    });
    ScrollBar vertical = getVerticalBar();
    vertical.setEnabled(false);
    vertical.addSelectionListener(new SelectionAdapter() {

        public void widgetSelected(SelectionEvent event) {
            scrollVertically((ScrollBar) event.widget);
        }
    });
}

Example 72 with ScrollBar

use of org.eclipse.swt.widgets.ScrollBar in project usbdm-eclipse-plugins by podonoghue.

the class ImageCanvas method syncScrollBars.

/**
 * Synchronize the scroll-bar with the image. If the transform is out
 * of range, it will correct it. This function considers only following
 * factors :<b> transform, image size, client area</b>.
 */
public void syncScrollBars() {
    if (sourceImage == null) {
        redraw();
        return;
    }
    AffineTransform af = fTransform;
    double sx = af.getScaleX(), sy = af.getScaleY();
    double tx = af.getTranslateX(), ty = af.getTranslateY();
    if (tx > 0)
        tx = 0;
    if (ty > 0)
        ty = 0;
    ScrollBar horizontal = getHorizontalBar();
    horizontal.setIncrement((int) (getClientArea().width / 100));
    horizontal.setPageIncrement(getClientArea().width);
    Rectangle imageBound = sourceImage.getBounds();
    int cw = getClientArea().width, ch = getClientArea().height;
    if (imageBound.width * sx > cw) {
        /* image is wider than client area */
        horizontal.setMaximum((int) (imageBound.width * sx));
        horizontal.setEnabled(true);
        if (((int) -tx) > horizontal.getMaximum() - cw)
            tx = -horizontal.getMaximum() + cw;
    } else {
        /* image is narrower than client area */
        horizontal.setEnabled(false);
        // center if too small.
        tx = (cw - imageBound.width * sx) / 2;
    }
    horizontal.setSelection((int) (-tx));
    horizontal.setThumb((int) (getClientArea().width));
    ScrollBar vertical = getVerticalBar();
    vertical.setIncrement((int) (getClientArea().height / 100));
    vertical.setPageIncrement((int) (getClientArea().height));
    if (imageBound.height * sy > ch) {
        /* image is higher than client area */
        vertical.setMaximum((int) (imageBound.height * sy));
        vertical.setEnabled(true);
        if (((int) -ty) > vertical.getMaximum() - ch)
            ty = -vertical.getMaximum() + ch;
    } else {
        /* image is less higher than client area */
        vertical.setEnabled(false);
        // center if too small.
        ty = (ch - imageBound.height * sy) / 2;
    }
    vertical.setSelection((int) (-ty));
    vertical.setThumb((int) (getClientArea().height));
    /* update transform. */
    af = AffineTransform.getScaleInstance(sx, sy);
    af.preConcatenate(AffineTransform.getTranslateInstance(tx, ty));
    fTransform = af;
    redraw();
}

Example 73 with ScrollBar

use of org.eclipse.swt.widgets.ScrollBar in project dbeaver by dbeaver.

the class ConsoleTextPresentation method performHorizontalScroll.

@Override
protected void performHorizontalScroll(int scrollCount) {
    ScrollBar hsb = text.getHorizontalBar();
    if (hsb != null && hsb.isVisible()) {
        int curPosition = text.getHorizontalPixel();
        int pageIncrement = UIUtils.getFontHeight(text.getFont()) * 10;
        if (scrollCount > 0) {
            if (curPosition > 0) {
                curPosition -= pageIncrement;
            }
        } else {
            curPosition += pageIncrement;
        }
        if (curPosition < 0)
            curPosition = 0;
        text.setHorizontalPixel(curPosition);
    // text.setHorizontalIndex();
    }
}

Example 74 with ScrollBar

use of org.eclipse.swt.widgets.ScrollBar in project dbeaver by serge-rider.

the class ConsoleTextPresentation method createPresentation.

@Override
public void createPresentation(@NotNull final IResultSetController controller, @NotNull Composite parent) {
    super.createPresentation(controller, parent);
    UIUtils.createHorizontalLine(parent);
    text = new StyledText(parent, SWT.READ_ONLY | SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
    text.setBlockSelection(true);
    text.setCursor(parent.getDisplay().getSystemCursor(SWT.CURSOR_IBEAM));
    text.setMargins(4, 4, 4, 4);
    text.setForeground(UIStyles.getDefaultTextForeground());
    text.setBackground(UIStyles.getDefaultTextBackground());
    text.setTabs(controller.getPreferenceStore().getInt(ResultSetPreferences.RESULT_TEXT_TAB_SIZE));
    text.setTabStops(null);
    text.setFont(UIUtils.getMonospaceFont());
    text.setLayoutData(new GridData(GridData.FILL_BOTH));
    text.addCaretListener(event -> onCursorChange(event.caretOffset));
    text.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            curSelection = text.getSelectionText();
            fireSelectionChanged(new PlainTextSelectionImpl());
        }
    });
    final ScrollBar verticalBar = text.getVerticalBar();
    verticalBar.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            if (verticalBar.getSelection() + verticalBar.getPageIncrement() >= verticalBar.getMaximum()) {
                if (controller.getPreferenceStore().getBoolean(ResultSetPreferences.RESULT_SET_AUTO_FETCH_NEXT_SEGMENT) && !controller.isRecordMode() && controller.isHasMoreData()) {
                    controller.readNextSegment();
                }
            }
        }
    });
    findReplaceTarget = new StyledTextFindReplaceTarget(text);
    TextEditorUtils.enableHostEditorKeyBindingsSupport(controller.getSite(), text);
    applyCurrentThemeSettings();
    registerContextMenu();
    activateTextKeyBindings(controller, text);
    trackPresentationControl();
}

Example 75 with ScrollBar

use of org.eclipse.swt.widgets.ScrollBar in project dbeaver by serge-rider.

the class PlainTextPresentation method createPresentation.

@Override
public void createPresentation(@NotNull final IResultSetController controller, @NotNull Composite parent) {
    super.createPresentation(controller, parent);
    UIUtils.createHorizontalLine(parent);
    text = new StyledText(parent, SWT.READ_ONLY | SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
    text.setBlockSelection(true);
    text.setCursor(parent.getDisplay().getSystemCursor(SWT.CURSOR_IBEAM));
    text.setMargins(4, 4, 4, 4);
    text.setForeground(UIStyles.getDefaultTextForeground());
    text.setBackground(UIStyles.getDefaultTextBackground());
    text.setTabs(controller.getPreferenceStore().getInt(ResultSetPreferences.RESULT_TEXT_TAB_SIZE));
    text.setTabStops(null);
    text.setFont(UIUtils.getMonospaceFont());
    text.setLayoutData(new GridData(GridData.FILL_BOTH));
    text.addCaretListener(event -> onCursorChange(event.caretOffset));
    text.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            curSelection = text.getSelectionText();
            fireSelectionChanged(new PlainTextSelectionImpl());
        }
    });
    final ScrollBar verticalBar = text.getVerticalBar();
    verticalBar.addSelectionListener(new SelectionAdapter() {

        @Override
        public void widgetSelected(SelectionEvent e) {
            if (verticalBar.getSelection() + verticalBar.getPageIncrement() >= verticalBar.getMaximum()) {
                if (controller.getPreferenceStore().getBoolean(ResultSetPreferences.RESULT_SET_AUTO_FETCH_NEXT_SEGMENT) && !controller.isRecordMode() && controller.isHasMoreData()) {
                    controller.readNextSegment();
                }
            }
        }
    });
    findReplaceTarget = new StyledTextFindReplaceTarget(text);
    TextEditorUtils.enableHostEditorKeyBindingsSupport(controller.getSite(), text);
    applyCurrentThemeSettings();
    registerContextMenu();
    activateTextKeyBindings(controller, text);
    trackPresentationControl();
}