I am trying to create a view with two trees that take up the entire display. As of now, the two trees are only taking up half (left half) of the canvas. I cannot figure out why, as I have tried many different parameters sent to each of the setup methods, such as setLayout, SashForm, etc. Here is my code and I attached an image to show what a simplified view of what I am getting now is.
super(parent);
setDisplayName("Viewer");
setLayout(new FillLayout());
((FillLayout) getLayout()).marginHeight = ((FillLayout) getLayout()).marginWidth = 20;
fullForm = new SashForm(this, SWT.VERTICAL);
fullForm.setLayout(new FillLayout());
adForm = new SashForm(fullForm, SWT.VERTICAL);
adForm.setLayout(new FillLayout());
countLabel = GUIToolkit.newLabel(this, SWT.CENTER, "", new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1));
countLabel.setFont(boldFont);
ad1Tree = createTree(fullForm, "name1", "col1", "col2");
ad2Tree = createTree(fullForm, "name2", "col1", "col2");
Create Tree
private static Tree createTree(final Composite parent, final String text, final String... columns) {
final Composite group = GUIToolkit.newGroup(parent, SWT.NONE, text, null);
group.setFont(FontManager.NORMAL_BOLD);
group.setLayout(new FillLayout());
final Tree tree = new Tree(group, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
tree.setHeaderVisible(true);
GUIToolkit.createColumns(tree, columns);
GUIToolkit.addColumnSort(tree, DATA);
GUIToolkit.removeDoubleClickExpand(tree);
I think your problem is that you don't assign a GridData to the Group containing the Tree and the Tree itself.
Try updating your code like this:
private static Tree createTree(final Composite parent, final String text, final String... columns) {
final Composite group = GUIToolkit.newGroup(parent, SWT.NONE, text, new GridData(SWT.FILL, SWT.FILL, true, true)); // <-- THIS
group.setFont(FontManager.NORMAL_BOLD);
group.setLayout(new FillLayout());
final Tree tree = new Tree(group, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
tree.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true)); // <-- THIS
tree.setHeaderVisible(true);
GUIToolkit.createColumns(tree, columns);
GUIToolkit.addColumnSort(tree, DATA);
GUIToolkit.removeDoubleClickExpand(tree);
}
Not sure what exactly GUIToolkit is, but I'm assuming it will just apply the LayoutData you provide.
UPDATE:
Ok, this is how I would do it:
public static void main(String[] args)
{
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("StackOverflow");
shell.setLayout(new GridLayout(1, false));
Group top = new Group(shell, SWT.NONE);
top.setLayout(new GridLayout(1, false));
top.setText("Top");
top.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
Group bottom = new Group(shell, SWT.NONE);
bottom.setLayout(new GridLayout(1, false));
bottom.setText("Bottom");
bottom.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
Tree topTree = new Tree(top, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
createColumns(topTree);
Tree bottomTree = new Tree(bottom, SWT.BORDER | SWT.FULL_SELECTION | SWT.MULTI);
createColumns(bottomTree);
shell.pack();
shell.open();
while (!shell.isDisposed())
{
if (!display.readAndDispatch())
{
display.sleep();
}
}
display.dispose();
}
private static void createColumns(Tree tree)
{
tree.setHeaderVisible(true);
for(int i = 0; i < 3; i++)
new TreeColumn(tree, SWT.NONE).setText("Col " + i);
for(int i = 0; i < 10; i++)
{
TreeItem item = new TreeItem(tree, SWT.NONE);
for(int j = 0; j < tree.getColumnCount(); j++)
{
item.setText(j, "Item " + i + " " + j);
}
}
for(int i = 0; i < tree.getColumnCount(); i++)
tree.getColumn(i).pack();
}
Related
I want to have a composite with some labels, and all the labels should have the same height, but they should be vertically centered.
So far I have the following:
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
final Composite composite = new Composite(shell, SWT.VERTICAL);
composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(1).equalWidth(true).spacing(0, 0).create());
for (int i = 0; i < 10; i++) {
final Label label = new Label(composite, SWT.WRAP);
label.setAlignment(SWT.CENTER);
label.setText(i < 5 ? "small " + i : "a very big text for the row that is named " + i);
label.setToolTipText(label.getText());
label.setLayoutData(GridDataFactory.fillDefaults().align(SWT.CENTER, SWT.CENTER).grab(true, true).create());
}
shell.setSize(100, 600);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
As you can see, the labels are vertically centered in their rows, but the ones which wrap take more space than the other ones.
If I add hint(SWT.DEFAULT, 60) to the GridData, I can force the labels to have the same height, but then they won't be vertically centered anymore.
I could probably wrap all the labels in composites, set the height hint on the composite and center the labels, but let's see of there is another option first.
How do I create vertically centered rows of equal height?
Since you're trying to uniformly arrange widgets which may be different sizes, I think a good option would be to place each Label into a Composite. That way each Composite can have the same size, and the Label will be centered within.
By adding a ControlListener to the parent Composite, you can check the size of each child Composite, then set the height hint of each child to be the height of the largest child:
public static void main(final String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
final Composite composite = new Composite(shell, SWT.VERTICAL);
composite.setLayout(GridLayoutFactory.fillDefaults().numColumns(1).equalWidth(true).spacing(0, 0).create());
final List<Composite> children = new ArrayList<Composite>();
for (int i = 0; i < 10; i++) {
final Composite c = new Composite(composite, SWT.BORDER);
c.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
c.setLayout(new GridLayout());
final Label label = new Label(c, SWT.WRAP);
label.setAlignment(SWT.CENTER);
label.setText(i < 5 ? "small " + i : "a very big text for the row that is named " + i);
label.setToolTipText(label.getText());
label.setLayoutData(GridDataFactory.fillDefaults().align(SWT.CENTER, SWT.CENTER).grab(true, true).create());
children.add(c);
}
composite.addControlListener(new ControlAdapter() {
#Override
public void controlResized(final ControlEvent e) {
int maxHeight = 0;
for (final Composite c : children) {
if (c.getClientArea().height > maxHeight) {
maxHeight = c.getClientArea().height;
}
}
for (final Composite c : children) {
((GridData) c.getLayoutData()).heightHint = maxHeight;
}
}
});
shell.setSize(100, 600);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
Result:
And after resizing:
ScrolledComposite scrollFormItemComposite = new ScrolledComposite(c, SWT.V_SCROLL | SWT.BORDER);
GridData formItemCompositeGridData = new GridData(SWT.FILL, SWT.FILL, true, true);
formItemCompositeGridData.horizontalSpan = 4;
scrollFormItemComposite.setLayoutData(formItemCompositeGridData);
GridLayout formItemLayout = new GridLayout(1, true);
formItemLayout.marginHeight = 0;
formItemLayout.marginWidth = 0;
formItemLayout.verticalSpacing = 0;
formItemLayout.horizontalSpacing = 0;
scrollFormItemComposite.setLayout(formItemLayout);
Composite formItemComposite = new Composite(scrollFormItemComposite, SWT.RESIZE);
formItemComposite.setLayout(new FillLayout(SWT.VERTICAL|SWT.HORIZONTAL));
FormProvider formProvider = new FormProvider();
formProvider.createForms(formItemComposite);
scrollFormItemComposite.setContent(formItemComposite);
scrollFormItemComposite.setExpandHorizontal(true);
scrollFormItemComposite.setExpandVertical(true);
scrollFormItemComposite.setMinSize(formItemComposite.computeSize(300,SWT.DEFAULT));
The previous lines of code give me the following output. I want the contents to shrink as the form becomes smaller. I dont want the horizontal scroll bar to appear. How do I prevent the text box from being hidden?
I am trying the following code to set scrollcomposite for TabItem "item2". But couldn't get the scroll bar.
Here I created two tabItem , where I need to set scrollcomposite / scrollbar for only item2 not for item1
Display display = new Display();
final Shell shell = new Shell(display);
final TabFolder tabFolder = new TabFolder(shell, SWT.BORDER);
Rectangle clientArea = shell.getClientArea();
tabFolder.setLocation(clientArea.x, clientArea.y);
// First Tab Item
TabItem item = new TabItem(tabFolder, SWT.NONE);
item.setText("TabItem " + 1);
Composite comp = new Composite(tabFolder, SWT.NONE);
GridLayout gl = new GridLayout();
GridData wgd = new GridData(GridData.FILL_BOTH);
comp.setLayout(gl);
comp.setLayoutData(wgd);
Button button = new Button(comp, SWT.PUSH);
button.setText("Page " + 1);
Button button2 = new Button(comp, SWT.PUSH);
button2.setText("Page " + 1);
Button button3 = new Button(comp, SWT.PUSH);
button3.setText("Page " + 1);
Button button4 = new Button(comp, SWT.PUSH);
button4.setText("Page " + 1);
item.setControl(comp);
ScrolledComposite sc = new ScrolledComposite(tabFolder, SWT.BORDER
| SWT.H_SCROLL | SWT.V_SCROLL);
// second tab item
TabItem item2 = new TabItem(tabFolder, SWT.NONE);
item2.setText("TabItem " + 1);
Composite comp2 = new Composite(tabFolder, SWT.NONE);
GridLayout gl2 = new GridLayout();
GridData wgd2 = new GridData(GridData.FILL_BOTH);
comp2.setLayout(gl2);
comp2.setLayoutData(wgd2);
Button buttonq = new Button(comp2, SWT.PUSH);
buttonq.setText("Page " + 1);
Button button2q = new Button(comp2, SWT.PUSH);
button2q.setText("Page " + 1);
sc.setContent(comp2);
sc.setExpandHorizontal(true);
sc.setExpandVertical(true);
sc.setMinSize(comp2.computeSize(SWT.DEFAULT, SWT.DEFAULT));
sc.setShowFocusedControl(true);
item2.setControl(comp2);
tabFolder.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
When I added following code, tabItem2 was empty:
item2.setControl(comp2);
Please help me to solve this
Several things here.
First use layouts for everything. The tabFolder.setLocation is causing confusion, use FillLayout instead.
So replace
Rectangle clientArea = shell.getClientArea();
tabFolder.setLocation(clientArea.x, clientArea.y);
with
shell.setLayout(new FillLayout());
Second, the Composite for the second tab must be owned by the ScrolledComposite.
So change
Composite comp2 = new Composite(tabFolder, SWT.NONE);
to
Composite comp2 = new Composite(sc, SWT.NONE);
Finally the ScrolledComposite must be the control for the second tab, so change
item2.setControl(comp2);
to
item2.setControl(sc);
I'm trying to develop a plugin for Eclipse. I follow tutorials online and I have done a plugin with sample perspective and a sample views.
Now the view show this:
public Object[] getElements(Object parent)
{
return new String[] { "One", "Two", "Three" };
}
Instead of string I need to insert a table. I follow another tutorial to create a TreeTable, but I have no idea how to put this table Tree into my plugin's view.
This is the code of TreeTable:
public class TreeTableCreation
{
public static void main(String[] args)
{
Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Tree tree = new Tree(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
tree.setHeaderVisible(true);
TreeColumn column1 = new TreeColumn(tree, SWT.LEFT);
column1.setText("Column 1");
column1.setWidth(200);
TreeColumn column2 = new TreeColumn(tree, SWT.CENTER);
column2.setText("Column 2");
column2.setWidth(200);
TreeColumn column3 = new TreeColumn(tree, SWT.RIGHT);
column3.setText("Column 3");
column3.setWidth(200);
for (int i = 0; i < 4; i++) {
TreeItem item = new TreeItem(tree, SWT.NONE);
item.setText(new String[] { "item " + i, "abc", "defghi" });
for (int j = 0; j < 4; j++) {
TreeItem subItem = new TreeItem(item, SWT.NONE);
subItem.setText(new String[] { "subitem " + j, "jklmnop", "qrs" });
for (int k = 0; k < 4; k++) {
TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
subsubItem.setText(new String[] { "subsubitem " + k, "tuv", "wxyz" });
}
}
}
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}
Your view should have a createPartControl(Composite parent) method inherited from ViewPart. Put your tree table creation code there and use the parent parameter as the tree's parent (instead of shell in your code).
Below code is working fine if i am using shell. but i am using the composite its not working.
code working fine if we use the shell:
Display display = new Display ();
Shell shell = new Shell (display);
shell.setLayout(new GridLayout());
final ScrolledComposite sc = new ScrolledComposite(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
sc.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
Composite c = new Composite(sc, SWT.NONE);
c.setLayout(new GridLayout(10, true));
for (int i = 0 ; i < 300; i++) {
Button b = new Button(c, SWT.PUSH);
b.setText("Button "+i);
}
sc.setContent(c);
sc.setExpandHorizontal(true);
sc.setExpandVertical(true);
sc.setMinSize(c.computeSize(SWT.DEFAULT, SWT.DEFAULT));
sc.setShowFocusedControl(true);
shell.setSize(300, 500);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
same code is not working if we use the composite in gridlayout:
Display display = new Display ();
Shell shell = new Shell (display);
shell.setLayout(new GridLayout());
Composite c1 = new Composite(shell, SWT.NONE);
c1.setLayout(new GridLayout());
final ScrolledComposite sc = new ScrolledComposite(c1, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
sc.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
Composite c = new Composite(sc, SWT.NONE);
c.setLayout(new GridLayout(10, true));
for (int i = 0 ; i < 300; i++) {
Button b = new Button(c, SWT.PUSH);
b.setText("Button "+i);
}
sc.setContent(c);
sc.setExpandHorizontal(true);
sc.setExpandVertical(true);
sc.setMinSize(c.computeSize(SWT.DEFAULT, SWT.DEFAULT));
sc.setShowFocusedControl(true);
shell.setSize(300, 500);
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
Your aren't telling your c1 composite how it should behave in relation to its parent (i.e. set a layout data).
You have two options:
c1.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
OR
shell.setLayout(new FillLayout());