[news.eclipse.platform.swt] SWT controls, Windows, flicking

[vkozhaev@xxxxxxxxx (VovkaMorkovka)]

Hi All!
I have problem with filcking of SWT controls during resizing.
Please, see code bellow, as you can see I use StyledText but other text 
widget are ficks to.
Does flicking of constrols is problem of SWT, or I can do thomething with 
it?

Vladimir

p.s. Sorry, for my English

package testing_examples;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.custom.ViewForm;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

public class LikeFilterpaneForm extends Composite {

 public LikeFilterpaneForm(Composite parent, int style) {

   super(parent, style);
   this.setLayout(new FillLayout());
   //
   final SashForm mainForm = StandardLayoutTesting.createSashForm(this,
       SWT.HORIZONTAL);

   ViewForm emptyForm = new ViewForm(mainForm, SWT.NONE);
   emptyForm.setBackground(Display.getCurrent()
       .getSystemColor(SWT.COLOR_WHITE));

   final SashForm formWithData = StandardLayoutTesting.createSashForm(
       mainForm, SWT.HORIZONTAL);

   mainForm.setWeights(new int[] { 20, 80 });
   //
   ViewForm viewFormForData = new ViewForm(formWithData, SWT.NONE);
   viewFormForData.setBackground(Display.getCurrent().getSystemColor(
       SWT.COLOR_WHITE));
   // main form from adding text field
   final SashForm mainTextFieldForm = 
StandardLayoutTesting.createSashForm(
       formWithData, SWT.VERTICAL);
   mainTextFieldForm.setRedraw(true);
   //

   final SashForm upSashForm = StandardLayoutTesting.createSashForm(
       mainTextFieldForm, SWT.HORIZONTAL);
   final SashForm downSashForm = StandardLayoutTesting.createSashForm(
       mainTextFieldForm, SWT.HORIZONTAL);

   addGroupToSashForm(upSashForm, "Left group", 3);
   addGroupToSashForm(upSashForm, "Right group",
       StandardLayoutTesting.N_OF_ROWS_IN_BIG_COMPOSITE);
   //

   final ViewForm leftDownViewForm = new ViewForm(downSashForm, SWT.NONE);
   Group leftDownGroup = new Group(leftDownViewForm, SWT.NONE);
   leftDownGroup.setLayout(new FillLayout());
   leftDownGroup.setText("This is label");

   leftDownViewForm.setTopLeft(leftDownGroup);
   leftDownViewForm.setBackground(Display.getCurrent().getSystemColor(
       SWT.COLOR_WIDGET_BACKGROUND));
   // leftDownGroup.pack();
   this.createTestTable(leftDownGroup, 3, 10);
   //
   Group complexGroup = new Group(downSashForm, SWT.NONE | SWT.SMOOTH);
   complexGroup.setText("Complex Group");
   complexGroup.setLayout(new FillLayout());
   //
   TabFolder tabFolder = new TabFolder(complexGroup, SWT.NONE);
   //
   Group firstTab = new Group(tabFolder, SWT.NONE);
   firstTab.setLayout(new FillLayout());
   firstTab.setText("Aaa");
   //
   Group secondTab = new Group(tabFolder, SWT.NONE);
   secondTab.setText("Bbb");
   secondTab.setLayout(new FillLayout());

   SashForm leftDownSashForm = new SashForm(firstTab, SWT.HORIZONTAL
       | SWT.SMOOTH);

   addGroupToSashForm(leftDownSashForm, "Left inside group", 3);
   addGroupToSashForm(leftDownSashForm, "Right inside group", 3);
   //
   TabItem firstTI = new TabItem(tabFolder, SWT.NULL);
   firstTI.setText("First tab");
   firstTI.setControl(firstTab);

   TabItem secondTI = new TabItem(tabFolder, SWT.NULL);
   secondTI.setText("Second tab");
   secondTI.setControl(secondTab);
   //

   firstTab.pack();
   tabFolder.pack();

 }

 private Group addGroupToSashForm(SashForm sashForm, String groupTitle,
     int numberOfRows) {
   ViewForm viewForm = new ViewForm(sashForm, SWT.NONE);
   viewForm.setToolTipText("View Form");
   viewForm
       
setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));

   Group group = new Group(viewForm, SWT.NONE);

   // group.setLayoutData(new GridData(GridData.CENTER, GridData.CENTER,
   // true, true));
   group.setText(groupTitle);
   group.setLayout(new GridLayout(1, false));
   group.pack();
   viewForm.setTopLeft(group);
   //
   fillComposite(group, numberOfRows);
   viewForm.pack();
   group.pack();
   return group;
 }

 // Fill composite
 private void fillComposite(Composite comp, int amountOfRows) {
   for (int i = 0; i < amountOfRows; i++) {
     Composite rowComposite = new Composite(comp, SWT.NONE);
     rowComposite.setLayout(new FormLayout());
     rowComposite.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, 
true,
         false));
     MyTestWidget label = new MyTestWidget(rowComposite, 0, true);

     FormData labelData = new FormData();
     labelData.left = new FormAttachment(0, 5);
     labelData.right = new FormAttachment(25, 0);
     labelData.height = MyTestWidget.TEXT_HEIGHT;

     label.setLayoutData(labelData);

     //
     MyTestWidget text = new MyTestWidget(rowComposite, 0, false);
     FormData textData = new FormData();
     textData.left = new FormAttachment(label, 5);
     textData.right = new FormAttachment(100, -5);
     textData.height = MyTestWidget.TEXT_HEIGHT;
     text.setLayoutData(textData);

   }
   comp.pack();
 }

 private Table createTestTable(Composite parent, int numOfColumns,
     int numOfRows) {
   final Table table = new Table(parent, SWT.V_SCROLL | SWT.H_SCROLL);
   table.setHeaderVisible(true);

   for (int i = 0; i < numOfColumns; i++) {
     TableColumn column = new TableColumn(table, SWT.NULL);
     column.setText("Column " + i);
   }

   for (int i = 0; i < numOfRows; i++) {
     TableItem item = new TableItem(table, SWT.NULL);
     for (int j = 0; j < numOfRows; j++) {
       item.setText(j, "row " + i);
     }
   }

   for (int i = 0; i < table.getColumnCount(); i++) {
     table.getColumn(i).pack();
   }

   return table;
 }

}

package testing_examples;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.custom.ViewForm;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Shell;

public class LikeInTestForm extends Composite {
	SashForm topSashForm;

	public LikeInTestForm(Composite parent, int style) {

		super(parent, style);
		this.setLayout(new FillLayout());

		topSashForm = StandardLayoutTesting.createSashForm(this, SWT.HORIZONTAL
				| SWT.BORDER);

		ViewForm emptyViewForm = new ViewForm(topSashForm, SWT.FILL);
		emptyViewForm.setBackground(Display.getCurrent().getSystemColor(
				SWT.COLOR_WHITE));

		Group gridLayoutGroup = new Group(topSashForm, SWT.NONE);
		gridLayoutGroup.setText("Group with grid layout");
		GridLayout gridLayout = new GridLayout();

		gridLayout.numColumns = 1;
		gridLayoutGroup.setLayout(gridLayout);
		//
		Group moveFromCenterGroup = new Group(gridLayoutGroup, SWT.FILL);
		moveFromCenterGroup.setText("This is group from rext field");
		moveFromCenterGroup.setLayoutData(new GridData(GridData.BEGINNING,
				GridData.BEGINNING, true, true));

		GridLayout insideGridLayout = new GridLayout();
		insideGridLayout.numColumns = 1;
		moveFromCenterGroup.setLayout(insideGridLayout);

		fillComposite(moveFromCenterGroup,
				StandardLayoutTesting.N_OF_ROWS_IN_BIG_COMPOSITE);

	}

	private void fillComposite(Composite comp, int amountOfRows) {
		for (int i = 0; i < amountOfRows; i++) {
			Composite rowComposite = new Composite(comp, SWT.NONE);
			rowComposite.setLayout(new FormLayout());
			rowComposite.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER,
					true, false));
			MyTestWidget label = new MyTestWidget(rowComposite, 0, true);

			FormData labelData = new FormData();
			labelData.left = new FormAttachment(0, 5);
			labelData.right = new FormAttachment(25, 0);
			labelData.height = MyTestWidget.TEXT_HEIGHT;

			label.setLayoutData(labelData);

			//
			MyTestWidget text = new MyTestWidget(rowComposite, 0, false);
			FormData textData = new FormData();
			textData.left = new FormAttachment(label, 5);
			textData.right = new FormAttachment(100, -5);
			textData.height = MyTestWidget.TEXT_HEIGHT;
			text.setLayoutData(textData);

		}
		comp.pack();
	}

}


package testing_examples;



import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;

public class MyTestWidget extends Composite {

	public static final int TEXT_HEIGHT=23;
	public MyTestWidget(Composite parent, int style, boolean isItLabel) {
		super(parent, SWT.NONE|SWT.NO_BACKGROUND);
		this.setLayout(new FillLayout());

		Control control;
		if (isItLabel) {
			control = new StyledText(this, SWT.READ_ONLY);
			((StyledText) control).setText("Label");

			control.setBackground(Display.getCurrent().getSystemColor(
					SWT.COLOR_WIDGET_BACKGROUND));

		} else {
			control = new StyledText(this, SWT.BORDER);
			((StyledText) control)
					.setText("Textabcdefghigklmnopqrsttttttttttttt");
		}

	}
}

package testing_examples;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;

public class StandardLayoutTesting {
 public static int N_OF_ROWS_IN_BIG_COMPOSITE = 100;

 public static final int WINDOW_WIDTH = 800;
 public static final int WINDOW_HEIGHT = 600;
 private static final boolean REPAINT_WHEN_DRAG_SASHFORM = true;

 public static void main(String[] args) {

   if (args.length > 0) {
     try {
       Integer rowsNum = Integer.valueOf("" + args[0]);
       N_OF_ROWS_IN_BIG_COMPOSITE = rowsNum;
     } catch (Exception e) {

     }
   }
   Display display = new Display();
   final Shell shell = new Shell(display);
   shell.setLayout(new FillLayout());

   final TabFolder tabFolder = new TabFolder(shell, SWT.NONE);

   Composite simpleExample = new LikeInTestForm(tabFolder, SWT.NONE);
   Composite complexExample = new LikeFilterpaneForm(tabFolder, SWT.NONE);
   TabItem simpleTabItem = new TabItem(tabFolder, SWT.NONE);
   simpleTabItem.setText("Simple example");
   simpleTabItem.setControl(simpleExample);
   //
   TabItem complexTabItem = new TabItem(tabFolder, SWT.NONE);
   complexTabItem.setText("Complex example");
   complexTabItem.setControl(complexExample);
   //
   shell.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch())
       display.sleep();
   }
   display.dispose();
 }

 public static SashForm createSashForm(Composite parent, int orientation) 
{
   SashForm sashForm;
   if (REPAINT_WHEN_DRAG_SASHFORM) {
     sashForm = new SashForm(parent, orientation | SWT.SMOOTH);
   } else {
     sashForm = new SashForm(parent, orientation);
   }
   return sashForm;
 }
}