/*******************************************************************************
* Copyright (c) 2000, 2007 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.ui.internal.forms.widgets;
import java.util.Hashtable;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.dnd.DragSourceListener;
import org.eclipse.swt.dnd.DropTargetListener;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.events.MouseTrackListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Layout;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.ui.forms.IFormColors;
import org.eclipse.ui.forms.IMessage;
import org.eclipse.ui.forms.events.IHyperlinkListener;
import org.eclipse.ui.forms.widgets.Hyperlink;
import org.eclipse.ui.forms.widgets.ILayoutExtension;
import org.eclipse.ui.forms.widgets.SizeCache;
import org.eclipse.ui.internal.forms.IMessageToolTipManager;
import org.eclipse.ui.internal.forms.MessageManager;
/**
* Form header moved out of the form class.
*/
public class FormHeading extends Canvas {
private static final int TITLE_HMARGIN = 1;
private static final int SPACING = 5;
private static final int VSPACING = 5;
private static final int HMARGIN = 6;
private static final int VMARGIN = 1;
private static final int CLIENT_MARGIN = 1;
private static final int SEPARATOR = 1 << 1;
private static final int BOTTOM_TOOLBAR = 1 << 2;
private static final int BACKGROUND_IMAGE_TILED = 1 << 3;
private static final int SEPARATOR_HEIGHT = 2;
private static final int MESSAGE_AREA_LIMIT = 50;
static IMessage[] NULL_MESSAGE_ARRAY = new IMessage[] {};
public static final String COLOR_BASE_BG = "baseBg"; //$NON-NLS-1$
private Image backgroundImage;
private Image gradientImage;
Hashtable colors = new Hashtable();
private int flags;
private GradientInfo gradientInfo;
private ToolBarManager toolBarManager;
private SizeCache toolbarCache = new SizeCache();
private SizeCache clientCache = new SizeCache();
private SizeCache messageCache = new SizeCache();
private TitleRegion titleRegion;
private MessageRegion messageRegion;
private IMessageToolTipManager messageToolTipManager = new DefaultMessageToolTipManager();
private Control headClient;
private class DefaultMessageToolTipManager implements
IMessageToolTipManager {
public void createToolTip(Control control, boolean imageLabel) {
}
public void update() {
String details = getMessageType() == 0 ? null : MessageManager
.createDetails(getChildrenMessages());
if (messageRegion != null)
messageRegion.updateToolTip(details);
if (getMessageType() > 0
&& (details == null || details.length() == 0))
details = getMessage();
titleRegion.updateToolTip(details);
}
}
private class GradientInfo {
Color[] gradientColors;
int[] percents;
boolean vertical;
}
private class FormHeadingLayout extends Layout implements ILayoutExtension {
public int computeMinimumWidth(Composite composite, boolean flushCache) {
return computeSize(composite, 5, SWT.DEFAULT, flushCache).x;
}
public int computeMaximumWidth(Composite composite, boolean flushCache) {
return computeSize(composite, SWT.DEFAULT, SWT.DEFAULT, flushCache).x;
}
public Point computeSize(Composite composite, int wHint, int hHint,
boolean flushCache) {
return layout(composite, false, 0, 0, wHint, hHint, flushCache);
}
protected void layout(Composite composite, boolean flushCache) {
Rectangle rect = composite.getClientArea();
layout(composite, true, rect.x, rect.y, rect.width, rect.height,
flushCache);
}
private Point layout(Composite composite, boolean move, int x, int y,
int width, int height, boolean flushCache) {
Point tsize = null;
Point msize = null;
Point tbsize = null;
Point clsize = null;
if (flushCache) {
clientCache.flush();
messageCache.flush();
toolbarCache.flush();
}
if (hasToolBar()) {
ToolBar tb = toolBarManager.getControl();
toolbarCache.setControl(tb);
tbsize = toolbarCache.computeSize(SWT.DEFAULT, SWT.DEFAULT);
}
if (headClient != null) {
clientCache.setControl(headClient);
int cwhint = width;
if (cwhint != SWT.DEFAULT) {
cwhint -= HMARGIN * 2;
if (tbsize != null && getToolBarAlignment() == SWT.BOTTOM)
cwhint -= tbsize.x + SPACING;
}
clsize = clientCache.computeSize(cwhint, SWT.DEFAULT);
}
int totalFlexWidth = width;
int flexWidth = totalFlexWidth;
if (totalFlexWidth != SWT.DEFAULT) {
totalFlexWidth -= TITLE_HMARGIN * 2;
// complete right margin
if (hasToolBar() && getToolBarAlignment() == SWT.TOP
|| hasMessageRegion())
totalFlexWidth -= SPACING;
// subtract tool bar
if (hasToolBar() && getToolBarAlignment() == SWT.TOP)
totalFlexWidth -= tbsize.x + SPACING;
flexWidth = totalFlexWidth;
if (hasMessageRegion()) {
// remove message region spacing and divide by 2
flexWidth -= SPACING;
// flexWidth /= 2;
}
}
/*
* // compute text and message sizes tsize =
* titleRegion.computeSize(flexWidth, SWT.DEFAULT); if (flexWidth !=
* SWT.DEFAULT && tsize.x < flexWidth) flexWidth += flexWidth -
* tsize.x;
*
* if (hasMessageRegion()) {
* messageCache.setControl(messageRegion.getMessageControl()); msize =
* messageCache.computeSize(flexWidth, SWT.DEFAULT); int maxWidth =
* messageCache.computeSize(SWT.DEFAULT, SWT.DEFAULT).x; if
* (maxWidth < msize.x) { msize.x = maxWidth; // recompute title
* with the reclaimed width int tflexWidth = totalFlexWidth -
* SPACING - msize.x; tsize = titleRegion.computeSize(tflexWidth,
* SWT.DEFAULT); } }
*/
if (!hasMessageRegion()) {
tsize = titleRegion.computeSize(flexWidth, SWT.DEFAULT);
} else {
// Total flexible area in the first row is flexWidth.
// Try natural widths of title and
Point tsizeNatural = titleRegion.computeSize(SWT.DEFAULT,
SWT.DEFAULT);
messageCache.setControl(messageRegion.getMessageControl());
Point msizeNatural = messageCache.computeSize(SWT.DEFAULT,
SWT.DEFAULT);
// try to fit all
tsize = tsizeNatural;
msize = msizeNatural;
if (flexWidth != SWT.DEFAULT) {
int needed = tsizeNatural.x + msizeNatural.x;
if (needed > flexWidth) {
// too big - try to limit the message
int mwidth = flexWidth - tsizeNatural.x;
if (mwidth >= MESSAGE_AREA_LIMIT) {
msize.x = mwidth;
} else {
// message is squeezed to the limit
int flex = flexWidth - MESSAGE_AREA_LIMIT;
tsize = titleRegion.computeSize(flex, SWT.DEFAULT);
msize.x = MESSAGE_AREA_LIMIT;
}
}
}
}
Point size = new Point(width, height);
if (!move) {
// compute sizes
int width1 = 2 * TITLE_HMARGIN;
width1 += tsize.x;
if (msize != null)
width1 += SPACING + msize.x;
if (tbsize != null && getToolBarAlignment() == SWT.TOP)
width1 += SPACING + tbsize.x;
if (msize != null
|| (tbsize != null && getToolBarAlignment() == SWT.TOP))
width1 += SPACING;
size.x = width1;
if (clsize != null) {
int width2 = clsize.x;
if (tbsize != null && getToolBarAlignment() == SWT.BOTTOM)
width2 += SPACING + tbsize.x;
width2 += 2 * HMARGIN;
size.x = Math.max(width1, width2);
}
// height, first row
size.y = tsize.y;
if (msize != null)
size.y = Math.max(msize.y, size.y);
if (tbsize != null && getToolBarAlignment() == SWT.TOP)
size.y = Math.max(tbsize.y, size.y);
if (size.y > 0)
size.y += VMARGIN * 2;
// add second row
int height2 = 0;
if (tbsize != null && getToolBarAlignment() == SWT.BOTTOM)
height2 = tbsize.y;
if (clsize != null)
height2 = Math.max(height2, clsize.y);
if (height2 > 0)
size.y += VSPACING + height2 + CLIENT_MARGIN;
// add separator
if (size.y > 0 && isSeparatorVisible())
size.y += SEPARATOR_HEIGHT;
} else {
// position controls
int xloc = x;
int yloc = y + VMARGIN;
int row1Height = tsize.y;
if (hasMessageRegion())
row1Height = Math.max(row1Height, msize.y);
if (hasToolBar() && getToolBarAlignment() == SWT.TOP)
row1Height = Math.max(row1Height, tbsize.y);
titleRegion.setBounds(xloc,
// yloc + row1Height / 2 - tsize.y / 2,
yloc, tsize.x, tsize.y);
xloc += tsize.x;
if (hasMessageRegion()) {
xloc += SPACING;
int messageOffset = 0;
if (tsize.y > 0) {
// space between title area and title text
int titleLeadingSpace = (tsize.y - titleRegion.getFontHeight()) / 2;
// space between message control and message text
int messageLeadingSpace = (msize.y - messageRegion.getFontHeight()) / 2;
// how much to offset the message so baselines align
messageOffset = (titleLeadingSpace + titleRegion.getFontBaselineHeight())
- (messageLeadingSpace + messageRegion.getFontBaselineHeight());
}
messageRegion
.getMessageControl()
.setBounds(
xloc,
tsize.y > 0 ? (yloc + messageOffset)
: (yloc + row1Height / 2 - msize.y / 2),
msize.x, msize.y);
xloc += msize.x;
}
if (toolBarManager != null)
toolBarManager.getControl().setVisible(
!toolBarManager.isEmpty());
if (tbsize != null && getToolBarAlignment() == SWT.TOP) {
ToolBar tbar = toolBarManager.getControl();
tbar.setBounds(x + width - 1 - tbsize.x - HMARGIN, yloc
+ row1Height - 1 - tbsize.y, tbsize.x, tbsize.y);
}
// second row
xloc = HMARGIN;
yloc += row1Height + VSPACING;
int tw = 0;
if (tbsize != null && getToolBarAlignment() == SWT.BOTTOM) {
ToolBar tbar = toolBarManager.getControl();
tbar.setBounds(x + width - 1 - tbsize.x - HMARGIN, yloc,
tbsize.x, tbsize.y);
tw = tbsize.x + SPACING;
}
if (headClient != null) {
int carea = width - HMARGIN * 2 - tw;
headClient.setBounds(xloc, yloc, carea, clsize.y);
}
}
return size;
}
}
private boolean hasToolBar() {
return toolBarManager != null && !toolBarManager.isEmpty();
}
private boolean hasMessageRegion() {
return messageRegion != null && !messageRegion.isEmpty();
}
private class MessageRegion {
private String message;
private int messageType;
private CLabel messageLabel;
private IMessage[] messages;
private Hyperlink messageHyperlink;
private ListenerList listeners;
private Color fg;
private int fontHeight = -1;
private int fontBaselineHeight = -1;
public MessageRegion() {
}
public boolean isDisposed() {
Control c = getMessageControl();
return c != null && c.isDisposed();
}
public boolean isEmpty() {
Control c = getMessageControl();
if (c == null)
return true;
return !c.getVisible();
}
public int getFontHeight() {
if (fontHeight == -1) {
Control c = getMessageControl();
if (c == null)
return 0;
GC gc = new GC(c.getDisplay());
gc.setFont(c.getFont());
fontHeight = gc.getFontMetrics().getHeight();
gc.dispose();
}
return fontHeight;
}
public int getFontBaselineHeight() {
if (fontBaselineHeight == -1) {
Control c = getMessageControl();
if (c == null)
return 0;
GC gc = new GC(c.getDisplay());
gc.setFont(c.getFont());
FontMetrics fm = gc.getFontMetrics();
fontBaselineHeight = fm.getHeight() - fm.getDescent();
gc.dispose();
}
return fontBaselineHeight;
}
public void showMessage(String newMessage, int newType,
IMessage[] messages) {
Control oldControl = getMessageControl();
int oldType = messageType;
this.message = newMessage;
this.messageType = newType;
this.messages = messages;
if (newMessage == null) {
// clearing of the message
if (oldControl != null && oldControl.getVisible())
oldControl.setVisible(false);
return;
}
ensureControlExists();
if (needHyperlink()) {
messageHyperlink.setText(newMessage);
messageHyperlink.setHref(messages);
} else {
messageLabel.setText(newMessage);
}
if (oldType != newType)
updateForeground();
}
public void updateToolTip(String toolTip) {
Control control = getMessageControl();
if (control != null)
control.setToolTipText(toolTip);
}
public String getMessage() {
return message;
}
public int getMessageType() {
return messageType;
}
public IMessage[] getChildrenMessages() {
return messages;
}
public String getDetailedMessage() {
Control c = getMessageControl();
if (c != null)
return c.getToolTipText();
return null;
}
public Control getMessageControl() {
if (needHyperlink() && messageHyperlink != null)
return messageHyperlink;
return messageLabel;
}
public Image getMessageImage() {
switch (messageType) {
case IMessageProvider.INFORMATION:
return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);
case IMessageProvider.WARNING:
return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_WARNING);
case IMessageProvider.ERROR:
return JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
default:
return null;
}
}
public void addMessageHyperlinkListener(IHyperlinkListener listener) {
if (listeners == null)
listeners = new ListenerList();
listeners.add(listener);
ensureControlExists();
if (messageHyperlink != null)
messageHyperlink.addHyperlinkListener(listener);
if (listeners.size() == 1)
updateForeground();
}
private void removeMessageHyperlinkListener(IHyperlinkListener listener) {
if (listeners != null) {
listeners.remove(listener);
if (messageHyperlink != null)
messageHyperlink.removeHyperlinkListener(listener);
if (listeners.isEmpty())
listeners = null;
ensureControlExists();
if (listeners == null && !isDisposed())
updateForeground();
}
}
private void ensureControlExists() {
if (needHyperlink()) {
if (messageLabel != null)
messageLabel.setVisible(false);
if (messageHyperlink == null) {
messageHyperlink = new Hyperlink(FormHeading.this, SWT.NULL);
messageHyperlink.setUnderlined(true);
messageHyperlink.setText(message);
messageHyperlink.setHref(messages);
Object[] llist = listeners.getListeners();
for (int i = 0; i < llist.length; i++)
messageHyperlink
.addHyperlinkListener((IHyperlinkListener) llist[i]);
if (messageToolTipManager != null)
messageToolTipManager.createToolTip(messageHyperlink, false);
} else if (!messageHyperlink.getVisible()) {
messageHyperlink.setText(message);
messageHyperlink.setHref(messages);
messageHyperlink.setVisible(true);
}
} else {
// need a label
if (messageHyperlink != null)
messageHyperlink.setVisible(false);
if (messageLabel == null) {
messageLabel = new CLabel(FormHeading.this, SWT.NULL);
messageLabel.setText(message);
if (messageToolTipManager != null)
messageToolTipManager.createToolTip(messageLabel, false);
} else if (!messageLabel.getVisible()) {
messageLabel.setText(message);
messageLabel.setVisible(true);
}
}
layout(true);
}
private boolean needHyperlink() {
return messageType > 0 && listeners != null;
}
public void setBackground(Color bg) {
if (messageHyperlink != null)
messageHyperlink.setBackground(bg);
if (messageLabel != null)
messageLabel.setBackground(bg);
}
public void setForeground(Color fg) {
this.fg = fg;
}
private void updateForeground() {
Color theFg;
switch (messageType) {
case IMessageProvider.ERROR:
theFg = getDisplay().getSystemColor(SWT.COLOR_RED);
break;
case IMessageProvider.WARNING:
theFg = getDisplay().getSystemColor(SWT.COLOR_DARK_YELLOW);
break;
default:
theFg = fg;
}
getMessageControl().setForeground(theFg);
}
}
/**
* Creates the form content control as a child of the provided parent.
*
* @param parent
* the parent widget
*/
public FormHeading(Composite parent, int style) {
super(parent, style);
setBackgroundMode(SWT.INHERIT_DEFAULT);
addListener(SWT.Paint, new Listener() {
public void handleEvent(Event e) {
onPaint(e.gc);
}
});
addListener(SWT.Dispose, new Listener() {
public void handleEvent(Event e) {
if (gradientImage != null) {
gradientImage.dispose();
gradientImage = null;
}
}
});
addListener(SWT.Resize, new Listener() {
public void handleEvent(Event e) {
if (gradientInfo != null
|| (backgroundImage != null && !isBackgroundImageTiled()))
updateGradientImage();
}
});
addMouseMoveListener(new MouseMoveListener() {
public void mouseMove(MouseEvent e) {
updateTitleRegionHoverState(e);
}
});
addMouseTrackListener(new MouseTrackListener() {
public void mouseEnter(MouseEvent e) {
updateTitleRegionHoverState(e);
}
public void mouseExit(MouseEvent e) {
titleRegion.setHoverState(TitleRegion.STATE_NORMAL);
}
public void mouseHover(MouseEvent e) {
}
});
super.setLayout(new FormHeadingLayout());
titleRegion = new TitleRegion(this);
}
/**
* Fully delegates the size computation to the internal layout manager.
*/
public final Point computeSize(int wHint, int hHint, boolean changed) {
return ((FormHeadingLayout) getLayout()).computeSize(this, wHint,
hHint, changed);
}
/**
* Prevents from changing the custom control layout.
*/
public final void setLayout(Layout layout) {
}
/**
* Returns the title text that will be rendered at the top of the form.
*
* @return the title text
*/
public String getText() {
return titleRegion.getText();
}
/**
* Returns the title image that will be rendered to the left of the title.
*
* @return the title image
* @since 3.2
*/
public Image getImage() {
return titleRegion.getImage();
}
/**
* Sets the background color of the header.
*/
public void setBackground(Color bg) {
super.setBackground(bg);
internalSetBackground(bg);
}
private void internalSetBackground(Color bg) {
titleRegion.setBackground(bg);
if (messageRegion != null)
messageRegion.setBackground(bg);
if (toolBarManager != null)
toolBarManager.getControl().setBackground(bg);
putColor(COLOR_BASE_BG, bg);
}
/**
* Sets the foreground color of the header.
*/
public void setForeground(Color fg) {
super.setForeground(fg);
titleRegion.setForeground(fg);
if (messageRegion != null)
messageRegion.setForeground(fg);
}
/**
* Sets the text to be rendered at the top of the form above the body as a
* title.
*
* @param text
* the title text
*/
public void setText(String text) {
titleRegion.setText(text);
}
public void setFont(Font font) {
super.setFont(font);
titleRegion.setFont(font);
}
/**
* Sets the image to be rendered to the left of the title.
*
* @param image
* the title image or <code>null</code> to show no image.
* @since 3.2
*/
public void setImage(Image image) {
titleRegion.setImage(image);
if (messageRegion != null)
titleRegion.updateImage(messageRegion.getMessageImage(), true);
else
titleRegion.updateImage(null, true);
}
public void setTextBackground(Color[] gradientColors, int[] percents,
boolean vertical) {
if (gradientColors != null) {
gradientInfo = new GradientInfo();
gradientInfo.gradientColors = gradientColors;
gradientInfo.percents = percents;
gradientInfo.vertical = vertical;
setBackground(null);
updateGradientImage();
} else {
// reset
gradientInfo = null;
if (gradientImage != null) {
gradientImage.dispose();
gradientImage = null;
setBackgroundImage(null);
}
}
}
public void setHeadingBackgroundImage(Image image) {
this.backgroundImage = image;
if (image != null)
setBackground(null);
if (isBackgroundImageTiled()) {
setBackgroundImage(image);
} else
updateGradientImage();
}
public Image getHeadingBackgroundImage() {
return backgroundImage;
}
public void setBackgroundImageTiled(boolean tiled) {
if (tiled)
flags |= BACKGROUND_IMAGE_TILED;
else
flags &= ~BACKGROUND_IMAGE_TILED;
setHeadingBackgroundImage(this.backgroundImage);
}
public boolean isBackgroundImageTiled() {
return (flags & BACKGROUND_IMAGE_TILED) != 0;
}
public void setBackgroundImage(Image image) {
super.setBackgroundImage(image);
if (image != null) {
internalSetBackground(null);
}
}
/**
* Returns the tool bar manager that is used to manage tool items in the
* form's title area.
*
* @return form tool bar manager
*/
public IToolBarManager getToolBarManager() {
if (toolBarManager == null) {
toolBarManager = new ToolBarManager(SWT.FLAT);
ToolBar toolbar = toolBarManager.createControl(this);
toolbar.setBackground(getBackground());
toolbar.setForeground(getForeground());
toolbar.setCursor(FormsResources.getHandCursor());
addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
if (toolBarManager != null) {
toolBarManager.dispose();
toolBarManager = null;
}
}
});
}
return toolBarManager;
}
/**
* Returns the menu manager that is used to manage tool items in the form's
* title area.
*
* @return form drop-down menu manager
* @since 3.3
*/
public IMenuManager getMenuManager() {
return titleRegion.getMenuManager();
}
/**
* Updates the local tool bar manager if used. Does nothing if local tool
* bar manager has not been created yet.
*/
public void updateToolBar() {
if (toolBarManager != null)
toolBarManager.update(false);
}
private void onPaint(GC gc) {
if (!isSeparatorVisible() && getBackgroundImage() == null)
return;
Rectangle carea = getClientArea();
Image buffer = new Image(getDisplay(), carea.width, carea.height);
buffer.setBackground(getBackground());
GC igc = new GC(buffer);
igc.setBackground(getBackground());
igc.fillRectangle(0, 0, carea.width, carea.height);
if (getBackgroundImage() != null) {
if (gradientInfo != null)
drawBackground(igc, carea.x, carea.y, carea.width, carea.height);
else {
Image bgImage = getBackgroundImage();
Rectangle ibounds = bgImage.getBounds();
drawBackground(igc, carea.x, carea.y, ibounds.width,
ibounds.height);
}
}
if (isSeparatorVisible()) {
// bg separator
if (hasColor(IFormColors.H_BOTTOM_KEYLINE1))
igc.setForeground(getColor(IFormColors.H_BOTTOM_KEYLINE1));
else
igc.setForeground(getBackground());
igc.drawLine(carea.x, carea.height - 2, carea.x + carea.width - 1,
carea.height - 2);
if (hasColor(IFormColors.H_BOTTOM_KEYLINE2))
igc.setForeground(getColor(IFormColors.H_BOTTOM_KEYLINE2));
else
igc.setForeground(getForeground());
igc.drawLine(carea.x, carea.height - 1, carea.x + carea.width - 1,
carea.height - 1);
}
igc.dispose();
gc.drawImage(buffer, carea.x, carea.y);
buffer.dispose();
}
private void updateTitleRegionHoverState(MouseEvent e) {
Rectangle titleRect = titleRegion.getBounds();
titleRect.width += titleRect.x + 15;
titleRect.height += titleRect.y + 15;
titleRect.x = 0;
titleRect.y = 0;
if (titleRect.contains(e.x, e.y))
titleRegion.setHoverState(TitleRegion.STATE_HOVER_LIGHT);
else
titleRegion.setHoverState(TitleRegion.STATE_NORMAL);
}
private void updateGradientImage() {
Rectangle rect = getBounds();
if (gradientImage != null) {
gradientImage.dispose();
gradientImage = null;
}
if (gradientInfo != null) {
boolean vertical = gradientInfo.vertical;
int width = vertical ? 1 : rect.width;
int height = vertical ? rect.height : 1;
gradientImage = new Image(getDisplay(), Math.max(width, 1), Math
.max(height, 1));
GC gc = new GC(gradientImage);
drawTextGradient(gc, width, height);
gc.dispose();
} else if (backgroundImage != null && !isBackgroundImageTiled()) {
gradientImage = new Image(getDisplay(), Math.max(rect.width, 1),
Math.max(rect.height, 1));
gradientImage.setBackground(getBackground());
GC gc = new GC(gradientImage);
gc.drawImage(backgroundImage, 0, 0);
gc.dispose();
}
setBackgroundImage(gradientImage);
}
private void drawTextGradient(GC gc, int width, int height) {
final Color oldBackground = gc.getBackground();
if (gradientInfo.gradientColors.length == 1) {
if (gradientInfo.gradientColors[0] != null)
gc.setBackground(gradientInfo.gradientColors[0]);
gc.fillRectangle(0, 0, width, height);
} else {
final Color oldForeground = gc.getForeground();
Color lastColor = gradientInfo.gradientColors[0];
if (lastColor == null)
lastColor = oldBackground;
int pos = 0;
for (int i = 0; i < gradientInfo.percents.length; ++i) {
gc.setForeground(lastColor);
lastColor = gradientInfo.gradientColors[i + 1];
if (lastColor == null)
lastColor = oldBackground;
gc.setBackground(lastColor);
if (gradientInfo.vertical) {
final int gradientHeight = (gradientInfo.percents[i]
* height / 100)
- pos;
gc.fillGradientRectangle(0, pos, width, gradientHeight,
true);
pos += gradientHeight;
} else {
final int gradientWidth = (gradientInfo.percents[i] * width / 100)
- pos;
gc.fillGradientRectangle(pos, 0, gradientWidth, height,
false);
pos += gradientWidth;
}
}
if (gradientInfo.vertical && pos < height) {
gc.setBackground(getColor(COLOR_BASE_BG));
gc.fillRectangle(0, pos, width, height - pos);
}
if (!gradientInfo.vertical && pos < width) {
gc.setBackground(getColor(COLOR_BASE_BG));
gc.fillRectangle(pos, 0, width - pos, height);
}
gc.setForeground(oldForeground);
}
}
public boolean isSeparatorVisible() {
return (flags & SEPARATOR) != 0;
}
public void setSeparatorVisible(boolean addSeparator) {
if (addSeparator)
flags |= SEPARATOR;
else
flags &= ~SEPARATOR;
}
public void setToolBarAlignment(int alignment) {
if (alignment == SWT.BOTTOM)
flags |= BOTTOM_TOOLBAR;
else
flags &= ~BOTTOM_TOOLBAR;
}
public int getToolBarAlignment() {
return (flags & BOTTOM_TOOLBAR) != 0 ? SWT.BOTTOM : SWT.TOP;
}
public void addMessageHyperlinkListener(IHyperlinkListener listener) {
ensureMessageRegionExists();
messageRegion.addMessageHyperlinkListener(listener);
}
public void removeMessageHyperlinkListener(IHyperlinkListener listener) {
if (messageRegion != null)
messageRegion.removeMessageHyperlinkListener(listener);
}
public String getMessage() {
return messageRegion != null ? messageRegion.getMessage() : null;
}
public int getMessageType() {
return messageRegion != null ? messageRegion.getMessageType() : 0;
}
public IMessage[] getChildrenMessages() {
return messageRegion != null ? messageRegion.getChildrenMessages()
: NULL_MESSAGE_ARRAY;
}
private void ensureMessageRegionExists() {
// ensure message region exists
if (messageRegion == null)
messageRegion = new MessageRegion();
}
public void showMessage(String newMessage, int type, IMessage[] messages) {
if (messageRegion == null) {
// check the trivial case
if (newMessage == null)
return;
} else if (messageRegion.isDisposed())
return;
ensureMessageRegionExists();
messageRegion.showMessage(newMessage, type, messages);
titleRegion.updateImage(messageRegion.getMessageImage(), false);
if (messageToolTipManager != null)
messageToolTipManager.update();
layout();
redraw();
}
/**
* Tests if the form is in the 'busy' state.
*
* @return <code>true</code> if busy, <code>false</code> otherwise.
*/
public boolean isBusy() {
return titleRegion.isBusy();
}
/**
* Sets the form's busy state. Busy form will display 'busy' animation in
* the area of the title image.
*
* @param busy
* the form's busy state
*/
public void setBusy(boolean busy) {
if (titleRegion.setBusy(busy))
layout();
}
public Control getHeadClient() {
return headClient;
}
public void setHeadClient(Control headClient) {
if (headClient != null)
Assert.isTrue(headClient.getParent() == this);
this.headClient = headClient;
layout();
}
public void putColor(String key, Color color) {
if (color == null)
colors.remove(key);
else
colors.put(key, color);
}
public Color getColor(String key) {
return (Color) colors.get(key);
}
public boolean hasColor(String key) {
return colors.containsKey(key);
}
public void addDragSupport(int operations, Transfer[] transferTypes,
DragSourceListener listener) {
titleRegion.addDragSupport(operations, transferTypes, listener);
}
public void addDropSupport(int operations, Transfer[] transferTypes,
DropTargetListener listener) {
titleRegion.addDropSupport(operations, transferTypes, listener);
}
public IMessageToolTipManager getMessageToolTipManager() {
return messageToolTipManager;
}
public void setMessageToolTipManager(
IMessageToolTipManager messageToolTipManager) {
this.messageToolTipManager = messageToolTipManager;
}
}