/*******************************************************************************
* Copyright (c) 2015, 2016 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
import static org.eclipse.swt.events.SelectionListener.*;
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
/**
* Transparent Background example snippet: Set transparent background.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
public class Snippet365 {
static Image oldImage;
static Image newImage;
// Containers
static Composite containerGroup;
static Canvas canvas;
static Composite composite;
static Group group;
static Sash sash;
// Native
static Composite nativeGroup;
static Button buttonCheckBox;
static ToolBar toolBar;
static CoolBar coolBar;
static Label label;
static Link link;
static Scale scale;
static Button radio;
static Button check;
static Button push;
// Custom
static Composite customGroup;
static CLabel cLabel;
static StyledText styledText;
static SashForm sashForm;
static CTabFolder cTab;
static CTabFolder gradientCTab;
// Item
static Composite itemGroup;
static TabFolder tabFolder;
static Table table;
static Tree tree;
static ExpandBar expandBar;
// As Designed
static Composite defaultBackgroundGroup;
static Text text;
static Combo combo;
static ProgressBar progressBar;
static DateTime dateTime;
static Slider slider;
static List list;
static CCombo ccombo;
public static void main(String[] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("Snippet365 - Transparent Background");
RowLayout layout = new RowLayout(SWT.VERTICAL);
layout.spacing = 20;
layout.marginWidth = 10;
layout.marginHeight = 10;
shell.setLayout(layout);
// Standard color background for Shell
// shell.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// Gradient background for Shell
shell.addListener(SWT.Resize, event -> {
Rectangle rect = shell.getClientArea();
Image newImage = new Image(display, Math.max(1, rect.width), 1);
GC gc = new GC(newImage);
gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE));
gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
gc.fillGradientRectangle(rect.x, rect.y, rect.width, 1, false);
gc.dispose();
shell.setBackgroundImage(newImage);
if (oldImage != null)
oldImage.dispose();
oldImage = newImage;
});
// Transparent
buttonCheckBox = new Button(shell, SWT.CHECK | SWT.None);
buttonCheckBox.setText("SET TRANSPARENT");
buttonCheckBox.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
buttonCheckBox.setSelection(false);
buttonCheckBox.addSelectionListener(widgetSelectedAdapter( e-> {
boolean transparent = ((Button) e.getSource()).getSelection();
if (transparent) {
// ContainerGroup
containerGroup.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
canvas.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
composite.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
tabFolder.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
for (TabItem item : tabFolder.getItems()) {
item.getControl().setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
}
// Native
nativeGroup.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
toolBar.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
coolBar.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
label.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
link.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
scale.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
radio.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
check.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
group.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
sash.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
slider.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
list.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
// Custom
customGroup.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
cLabel.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
cTab.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_TRANSPARENT));
gradientCTab.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_TRANSPARENT));
sashForm.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_TRANSPARENT));
for (Control control : sashForm.getChildren()) {
control.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_TRANSPARENT));
}
// Default
push.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
defaultBackgroundGroup.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
combo.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
progressBar.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
dateTime.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
ccombo.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
text.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
styledText.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
expandBar.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
table.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
tree.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
// ItemGroup
itemGroup.setBackground(display.getSystemColor(SWT.COLOR_TRANSPARENT));
} else {
// Native
nativeGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
toolBar.setBackground(null);
coolBar.setBackground(null);
label.setBackground(null);
link.setBackground(null);
scale.setBackground(null);
RGB rgb = display.getSystemColor(SWT.COLOR_CYAN).getRGB();
radio.setBackground(new Color(display, new RGBA(rgb.red, rgb.blue, rgb.green, 255)));
check.setBackgroundImage(getBackgroundImage(display));
group.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
sash.setBackground(display.getSystemColor(SWT.COLOR_DARK_CYAN));
slider.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
list.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
text.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// ContainerGroup
containerGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
canvas.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
composite.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
tabFolder.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
for (TabItem item : tabFolder.getItems()) {
item.getControl().setBackground(display.getSystemColor(SWT.COLOR_CYAN));
}
// Custom
customGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
cLabel.setBackground((Color) null);
styledText.setBackground((Color) null);
sashForm.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
for (Control control : sashForm.getChildren()) {
control.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
}
cTab.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
gradientCTab.setBackground(
new Color[] { display.getSystemColor(SWT.COLOR_RED),
display.getSystemColor(SWT.COLOR_WHITE) }, new int[] { 90 }, true);
// Default
defaultBackgroundGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
push.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
combo.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
ccombo.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
dateTime.setBackground(null);
progressBar.setBackground(null);
expandBar.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
table.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
tree.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// ItemGroup
itemGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
}
}));
// ContainerGroup
containerGroup = new Composite(shell, SWT.NONE);
containerGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
containerGroup.setToolTipText("CONTAINER");
layout = new RowLayout();
layout.spacing = 20;
containerGroup.setLayout(layout);
// Native
nativeGroup = new Composite(shell, SWT.NONE);
nativeGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
nativeGroup.setToolTipText("NATIVE");
layout = new RowLayout();
layout.spacing = 20;
nativeGroup.setLayout(layout);
// Custom
customGroup = new Composite(shell, SWT.NONE);
customGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
customGroup.setToolTipText("CUSTOM");
layout = new RowLayout();
layout.spacing = 20;
customGroup.setLayout(layout);
// AsDesigned
defaultBackgroundGroup = new Composite(shell, SWT.NONE);
defaultBackgroundGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
defaultBackgroundGroup.setToolTipText("Default Background");
layout = new RowLayout();
layout.spacing = 20;
defaultBackgroundGroup.setLayout(layout);
// ItemGroup
itemGroup = new Composite(shell, SWT.NONE);
itemGroup.setBackground(display.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
itemGroup.setToolTipText("ITEM");
layout = new RowLayout();
layout.spacing = 20;
itemGroup.setLayout(layout);
// Label
label = new Label(nativeGroup, SWT.NONE);
label.setText("Label");
// Radio button
radio = new Button(nativeGroup, SWT.RADIO);
radio.setText("Radio Button");
radio.setSelection(true);
radio.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// Checkbox button with image
check = new Button(nativeGroup, SWT.CHECK);
check.setText("CheckBox Image");
check.setSelection(true);
check.setBackgroundImage(getBackgroundImage(display));
// Push Button
push = new Button(defaultBackgroundGroup, SWT.PUSH);
push.setText("Push Button");
// Toolbar
toolBar = new ToolBar(nativeGroup, SWT.FLAT);
toolBar.pack();
ToolItem item = new ToolItem(toolBar, SWT.PUSH);
item.setText("ToolBar_Item");
// Coolbar
coolBar = new CoolBar(nativeGroup, SWT.BORDER);
for (int i=0; i<2; i++) {
CoolItem item2 = new CoolItem (coolBar, SWT.NONE);
Button button = new Button (coolBar, SWT.PUSH);
button.setText ("Button " + i);
Point size = button.computeSize (SWT.DEFAULT, SWT.DEFAULT);
item2.setPreferredSize (item2.computeSize (size.x, size.y));
item2.setControl (button);
}
// Scale
scale = new Scale(nativeGroup, SWT.None);
scale.setMaximum(100);
scale.setSelection(20);
// Link
link = new Link(nativeGroup, SWT.NONE);
link.setText("<a>Sample link</a>");
// List
list = new List(nativeGroup, SWT.BORDER);
list.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
list.add("List_one");
list.add("List_two");
list.add("List_three");
list.add("List_four");
// Canvas
canvas = new Canvas (containerGroup, SWT.NONE);
canvas.setToolTipText("Canvas");
canvas.addPaintListener(e -> {
GC gc = e.gc;
gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
gc.drawRectangle(e.x+1, e.y+1, e.width-2, e.height-2);
gc.drawArc(2, 2, e.width-4, e.height-4, 0, 360);
});
// Composite
composite = new Composite(containerGroup, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
composite.setToolTipText("Composite");
// TabFolder
tabFolder = new TabFolder(containerGroup, SWT.BORDER);
tabFolder.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
for (int i=0; i < 2; i++) {
TabItem tabItem = new TabItem (tabFolder, SWT.NONE);
tabItem.setText ("TabItem " + i);
Label label = new Label (tabFolder, SWT.PUSH);
label.setText ("Page " + i);
tabItem.setControl (label);
tabItem.getControl().setBackground(display.getSystemColor(SWT.COLOR_CYAN));
}
tabFolder.pack ();
// Group
group = new Group(containerGroup, SWT.NONE);
group.setText("Group");
// Sash
sash = new Sash(containerGroup, SWT.HORIZONTAL | SWT.BORDER);
sash.setBackground(display.getSystemColor(SWT.COLOR_DARK_CYAN));
sash.setLayoutData(new RowData(100, 100));
sash.setToolTipText("Sash");
// SashForm
sashForm = new SashForm(containerGroup, SWT.HORIZONTAL | SWT.BORDER);
Label leftLabel = new Label(sashForm, SWT.NONE);
leftLabel.setText("SashForm\nLeft\n...\n...\n...\n...\n...");
Label rightLabel = new Label(sashForm, SWT.NONE);
rightLabel.setText("SashForm\nRight\n...\n...\n...\n...\n...");
// DateTime
dateTime = new DateTime(defaultBackgroundGroup, SWT.NONE);
dateTime.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// Text
text = new Text(nativeGroup, SWT.BORDER);
text.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
text.setText("text");
// ProgressBar
progressBar = new ProgressBar(defaultBackgroundGroup, SWT.NONE);
progressBar.setMaximum(100);
progressBar.setSelection(80);
// Combo
combo = new Combo(defaultBackgroundGroup, SWT.BORDER);
combo.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
combo.add("combo");
combo.setText("combo");
// Slider
slider = new Slider(nativeGroup, SWT.HORIZONTAL | SWT.BORDER);
slider.setSelection(20);
slider.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// CCombo
ccombo = new CCombo(defaultBackgroundGroup, SWT.BORDER);
ccombo.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
ccombo.add("ccombo");
ccombo.setText("ccombo");
// CLable
cLabel = new CLabel(customGroup, SWT.NONE);
cLabel.setText("CLabel");
// Text
styledText = new StyledText(customGroup, SWT.BORDER);
styledText.setFont(new Font(display, "Tahoma", 18, SWT.BOLD | SWT.ITALIC));
styledText.setForeground(display.getSystemColor(SWT.COLOR_DARK_BLUE));
styledText.setText("Styled Text");
styledText.append("\n");
styledText.append("Example_string");
styledText.append("\n");
styledText.append("One_Two");
styledText.append("\n");
styledText.append("Two_Three");
// CTabFolder
cTab = new CTabFolder(containerGroup, SWT.BORDER);
for (int i = 0; i < 2; i++) {
CTabItem cTabItem = new CTabItem(cTab, SWT.CLOSE, i);
cTabItem.setText("CTabItem " + (i + 1));
}
cTab.setSelection(0);
// Gradient CTabFolder
gradientCTab = new CTabFolder(customGroup, SWT.BORDER);
gradientCTab.setBackground(
new Color[] { display.getSystemColor(SWT.COLOR_WHITE), display.getSystemColor(SWT.COLOR_RED) },
new int[] { 90 }, true);
for (int i = 0; i < 2; i++) {
CTabItem cTabItem = new CTabItem(gradientCTab, SWT.CLOSE, i);
cTabItem.setText("CTabItem " + (i + 1));
}
gradientCTab.setSelection(0);
// Table
table = new Table(itemGroup, SWT.V_SCROLL);
table.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
table.setLinesVisible(true);
table.setHeaderVisible(true);
TableItem tableItem = new TableItem(table, SWT.NONE);
tableItem.setText("TableItem - One");
tableItem = new TableItem(table, SWT.NONE);
tableItem.setText("TableItem - Two");
// Tree
tree = new Tree(itemGroup, SWT.NONE);
TreeItem treeItem = new TreeItem (tree, SWT.NONE);
treeItem.setText("Parent");
TreeItem childItem = new TreeItem (treeItem, SWT.NONE);
childItem.setText("Child1");
childItem = new TreeItem (treeItem, SWT.NONE);
childItem.setText("Child2");
treeItem.setExpanded(true);
tree.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
// ExpandBar
expandBar = new ExpandBar (itemGroup, SWT.V_SCROLL);
expandBar.setBackground(display.getSystemColor(SWT.COLOR_CYAN));
for (int i = 1; i <= 2; i++) {
ExpandItem item1 = new ExpandItem(expandBar, SWT.NONE, 0);
item1.setText("Expand_Bar_Entry " + i);
item1.setExpanded(true);
item1.setHeight(20);
}
shell.open();
shell.pack();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private static Image getBackgroundImage(final Display display) {
if (newImage == null) {
Rectangle rect = new Rectangle(0, 0, 115, 5);
newImage = new Image(display, Math.max(1, rect.width), 1);
GC gc = new GC(newImage);
gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
gc.fillGradientRectangle(rect.x, rect.y, rect.width, 1, false);
gc.dispose();
}
return newImage;
}
}
