clean up of ToolTip handler
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210d925987
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cea11743eb
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@ -3,9 +3,9 @@ package com.minres.scviewer.database.swt.internal;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.MouseEvent;
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import org.eclipse.swt.events.MouseListener;
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import org.eclipse.swt.events.MouseMoveListener;
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import org.eclipse.swt.events.MouseTrackAdapter;
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import org.eclipse.swt.graphics.Color;
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import org.eclipse.swt.events.PaintEvent;
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import org.eclipse.swt.events.PaintListener;
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import org.eclipse.swt.graphics.Font;
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import org.eclipse.swt.graphics.Point;
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import org.eclipse.swt.graphics.Rectangle;
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@ -29,87 +29,63 @@ import com.minres.scviewer.database.swt.ToolTipTableContentProvider;
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class ToolTipHandler {
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private final Display display;
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private Shell parentShell;
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private Shell tipShell;
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private Label tipLabelText;
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private Table tipTable;
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private Shell shell;
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private Label label;
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private Table table;
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private TableColumn nameCol;
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private TableColumn valueCol;
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private Widget tipWidget; // widget this tooltip is hovering over
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private Point tipPosition; // the position being hovered over
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private final TableColumn[] columns;
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private static final int hoverYOffset = 1;
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private static final String[] COLUMN_NAMES = { "Name", "Value"};
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private static final int MAX_CHARS = 48;
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// The names of the first 32 characters
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private Color[] colors = new Color[MAX_CHARS];
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/**
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* Creates a new tooltip handler
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*
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* @param parent the parent Shell
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*/
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public ToolTipHandler(Shell parent) {
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final Display display = parent.getDisplay();
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display = parent.getDisplay();
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this.parentShell = parent;
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tipShell = new Shell(parent, SWT.ON_TOP | SWT.TOOL);
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shell = new Shell(parent, SWT.ON_TOP | SWT.NO_FOCUS | SWT.TOOL);
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GridLayout gridLayout = new GridLayout();
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gridLayout.numColumns = 1;
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gridLayout.marginWidth = 2;
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gridLayout.marginHeight = 2;
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tipShell.setLayout(gridLayout);
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shell.setLayout(gridLayout);
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tipShell.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
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shell.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
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tipLabelText = new Label(tipShell, SWT.NONE);
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tipLabelText.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
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tipLabelText.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
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tipLabelText.setLayoutData(new GridData(GridData.FILL_HORIZONTAL |GridData.VERTICAL_ALIGN_CENTER));
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label = new Label(shell, SWT.NONE);
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label.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
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label.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
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label.setLayoutData(new GridData(GridData.FILL_HORIZONTAL |GridData.VERTICAL_ALIGN_CENTER));
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final Font font = new Font(Display.getCurrent(), "Terminal", 10, SWT.NORMAL);
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tipTable = new Table(tipShell, SWT.NONE);
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tipTable.setHeaderVisible(true);
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tipTable.setLinesVisible(true);
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tipTable.setFont(font);
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table = new Table(shell, SWT.NONE);
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table.setHeaderVisible(false);
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table.setLinesVisible(true);
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table.setFont(font);
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table.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
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table.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
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table.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
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columns = createColumns(tipTable);
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nameCol = new TableColumn(table, SWT.LEFT);
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nameCol.setText("Name");
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valueCol = new TableColumn(table, SWT.LEFT);
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nameCol.setText("Value");
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tipTable.setRedraw(false);
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for (int i = 0; i < MAX_CHARS; i++) {
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// Create a background color for this row
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colors[i] = new Color(tipTable.getDisplay(), 255 - i, 127 + i, i);
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// Create the row in the table by creating
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// a TableItem and setting text for each
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// column
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int c = 0;
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TableItem item = new TableItem(tipTable, SWT.NONE);
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item.setText(c++, String.valueOf((char) i));
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item.setText(c++, String.valueOf(i));
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item.setBackground(colors[i]);
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shell.addPaintListener(new PaintListener() {
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@Override
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public void paintControl(PaintEvent e) {
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Rectangle area = shell.getClientArea();
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valueCol.setWidth(area.width - nameCol.getWidth());
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}
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// Now that we've set the text into the columns,
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// we call pack() on each one to size it to the
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// contents.
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for (int i = 0, n = columns.length; i < n; i++)
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columns[i].pack();
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// Set redraw back to true so that the table
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// will paint appropriately
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tipTable.setRedraw(true);
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}
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private TableColumn[] createColumns(Table table) {
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TableColumn[] columns = new TableColumn[COLUMN_NAMES.length];
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for (int i = 0, n = columns.length; i < n; i++) {
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columns[i] = new TableColumn(table, SWT.LEFT);
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columns[i].setText(COLUMN_NAMES[i]);
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}
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return columns;
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});
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}
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/**
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@ -122,27 +98,16 @@ class ToolTipHandler {
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* Get out of the way if we attempt to activate the control underneath the tooltip
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*/
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control.addMouseListener(MouseListener.mouseDownAdapter(e -> {
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if (tipShell.isVisible())
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tipShell.setVisible(false);
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if (shell.isVisible())
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shell.setVisible(false);
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}));
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/*
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* get out of the way if we move the mouse
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*/
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control.addMouseMoveListener(new MouseMoveListener() {
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@Override
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public void mouseMove(MouseEvent e) {
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if (tipShell.isVisible())
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tipShell.setVisible(false);
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}
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});
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/*
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* Trap hover events to pop-up tooltip
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*/
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control.addMouseTrackListener(new MouseTrackAdapter () {
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@Override
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public void mouseExit(MouseEvent e) {
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if (tipShell.isVisible()) tipShell.setVisible(false);
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if (shell.isVisible()) shell.setVisible(false);
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tipWidget = null;
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}
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@Override
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@ -162,45 +127,47 @@ class ToolTipHandler {
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widget = w.getItem (pt);
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}
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if (widget == null) {
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tipShell.setVisible(false);
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shell.setVisible(false);
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tipWidget = null;
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return;
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}
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if (widget == tipWidget && tipShell.isVisible()) return;
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Point newPos = control.toDisplay(pt);
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if(shell.isFocusControl()) return;
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if (widget == tipWidget && tipPosition.equals(newPos) && shell.isVisible()) return;
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tipWidget = widget;
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tipPosition = control.toDisplay(pt);
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tipPosition = newPos;
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boolean showDialog = false;
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Object o = widget.getData(Constants.CONTENT_PROVIDER_TAG);
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if(o != null) {
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ToolTipTableContentProvider provider = ((ToolTipTableContentProvider)o).initialize(widget, pt);
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tipLabelText.setText(provider.getTableTitle());
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tipTable.setRedraw(false);
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tipTable.removeAll();
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label.setText(provider.getTableTitle());
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table.setRedraw(false);
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table.removeAll();
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for (String[] strings : provider.getTableContent()) {
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if(strings.length>0) {
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showDialog=true;
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TableItem item = new TableItem(tipTable, SWT.NONE);
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TableItem item = new TableItem(table, SWT.NONE);
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item.setText(0, strings[0]);
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if(strings.length>1)
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item.setText(1, strings[1]);
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}
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}
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for (int i = 0, n = columns.length; i < n; i++)
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columns[i].pack();
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tipTable.setRedraw(true);
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tipTable.setVisible(true);
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nameCol.pack();
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valueCol.pack();
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table.setRedraw(true);
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table.setVisible(true);
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} else {
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tipTable.setVisible(false);
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table.setVisible(false);
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}
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String text = (String) widget.getData(Constants.TEXT_PROVIDER_TAG);
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if(text != null) {
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tipLabelText.setText(text != null ? text : "Hover test should go here");
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label.setText(text != null ? text : "Hover test should go here");
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showDialog=true;
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}
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if(showDialog) {
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tipShell.pack();
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setHoverLocation(tipShell, tipPosition);
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tipShell.setVisible(true);
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shell.pack();
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setHoverLocation(shell, tipPosition);
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shell.setVisible(true);
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}
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}
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});
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@ -215,8 +182,8 @@ class ToolTipHandler {
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String text = handler.getHelpText(tipWidget);
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if (text == null) return;
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if (tipShell.isVisible()) {
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tipShell.setVisible(false);
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if (shell.isVisible()) {
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shell.setVisible(false);
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Shell helpShell = new Shell(parentShell, SWT.SHELL_TRIM);
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helpShell.setLayout(new FillLayout());
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Label label = new Label(helpShell, SWT.NONE);
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@ -226,6 +193,11 @@ class ToolTipHandler {
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helpShell.open();
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}
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});
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// control.addKeyListener(KeyListener.keyPressedAdapter( e-> {
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// if (e.keyCode == SWT.F2 && shell.isVisible()) {
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// shell.setFocus();
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// }
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// }));
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}
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/**
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