How to add a banner bar in the RCP program, rcp

How to add a banner bar in the RCP program, rcp

This period of time is relatively idle. I am going to summarize some of the various and even some strange studies I have done in the past. Maybe some people may not use it, don't worry about the time and waste of power. In the past, a customer proposed to add a banner bar to the RCP program, which took a long time to complete. The Code is based on eclipse4.3.2.

Let's take a look at the effect preview:

Public class CustomTrimmedPartLayout extends TrimmedPartLayout {public Composite banner;/*** This layout is used to support parts that want trim for their containing * composites. ** @ param trimOwner */public CustomTrimmedPartLayout (Composite parent) {super (parent); banner= New Composite (parent, SWT. NONE); GridLayout gridLayout = new GridLayout (1, false); gridLayout. horizontalSpacing = 0; gridLayout. verticalSpacing = 0; gridLayout. marginHeight = 0; gridLayout. marginWidth = 0

;        banner.setLayout(gridLayout);        //banner.setLayoutData(new GridData(GridData.FILL_BOTH));    }        protected void layout(Composite composite, boolean flushCache) {        Rectangle ca = composite.getClientArea();        Rectangle caRect = new Rectangle(ca.x, ca.y, ca.width, ca.height);        

// 'Banner 'spans the entire area if (banner! = Null & banner. isVisible () {Point bannerSize = banner. computeSize (caRect. width, SWT. DEFAULT, true); // Don't layout unless we 've changed Rectangle newBounds = new Rectangle (caRect. x, caRect. y, bannerSize. x, bannerSize. y); caRect. y + = bannerSize. y; caRect. height-= bannerSize. y; if (!

newBounds.equals(banner.getBounds())) {                    banner.setBounds(newBounds);            }        }                        // 'Top' spans the entire area                 if (top != null && top.isVisible()) {            Point topSize = top.computeSize(caRect.width, SWT.DEFAULT, true);            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x, caRect.y, caRect.width,                    topSize.y);            if (!newBounds.equals(top.getBounds())) {                top.setBounds(newBounds);            }                        caRect.y += topSize.y;            caRect.height -= topSize.y;        }                // Include the gutter whether there is a top area or not.        caRect.y += gutterTop;        caRect.height -= gutterTop;        // 'Bottom' spans the entire area        if (bottom != null && bottom.isVisible()) {            Point bottomSize = bottom.computeSize(caRect.width, SWT.DEFAULT,                    true);            caRect.height -= bottomSize.y;            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x, caRect.y                    + caRect.height, caRect.width, bottomSize.y);            if (!newBounds.equals(bottom.getBounds())) {                bottom.setBounds(newBounds);            }        }        caRect.height -= gutterBottom;        // 'Left' spans between 'top' and 'bottom'        if (left != null && left.isVisible()) {            Point leftSize = left.computeSize(SWT.DEFAULT, caRect.height, true);            caRect.x += leftSize.x;            caRect.width -= leftSize.x;            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x - leftSize.x,                    caRect.y, leftSize.x, caRect.height);            if (!newBounds.equals(left.getBounds())) {                left.setBounds(newBounds);            }        }        caRect.x += gutterLeft;        caRect.width -= gutterLeft;        // 'Right' spans between 'top' and 'bottom'        if (right != null && right.isVisible()) {            Point rightSize = right.computeSize(SWT.DEFAULT, caRect.height,                    true);            caRect.width -= rightSize.x;            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x + caRect.width,                    caRect.y, rightSize.x, caRect.height);            if (!newBounds.equals(right.getBounds())) {                right.setBounds(newBounds);            }        }        caRect.width -= gutterRight;        // Don't layout unless we've changed        if (!caRect.equals(clientArea.getBounds())) {            clientArea.setBounds(caRect);        }    }}

 

If we want the Banner to be placed under the toolbar, instead of above, we only need to slightly modify the position of the Code.

public class CustomTrimmedPartLayout extends TrimmedPartLayout {public Composite banner;    /**     * This layout is used to support parts that want trim for their containing     * composites.     *      * @param trimOwner     */    public CustomTrimmedPartLayout(Composite parent) {        super(parent);        banner 

= New Composite (parent, SWT. NONE); GridLayout gridLayout = new GridLayout (1, false); gridLayout. horizontalSpacing = 0; gridLayout. verticalSpacing = 0; gridLayout. marginHeight = 0; gridLayout. marginWidth = 0

;        banner.setLayout(gridLayout);        //banner.setLayoutData(new GridData(GridData.FILL_BOTH));    }        protected void layout(Composite composite, boolean flushCache) {        Rectangle ca = composite.getClientArea();        Rectangle caRect = new Rectangle(ca.x, ca.y, ca.width, ca.height);                        // 'Top' spans the entire area                 if (top != null && top.isVisible()) {            Point topSize = top.computeSize(caRect.width, SWT.DEFAULT, true);            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x, caRect.y, caRect.width,                    topSize.y);            if (!newBounds.equals(top.getBounds())) {                top.setBounds(newBounds);            }                        caRect.y += topSize.y;            caRect.height -= topSize.y;        }                

// 'Banner 'spans the entire area if (banner! = Null & banner. isVisible () {Point bannerSize = banner. computeSize (caRect. width, SWT. DEFAULT, true); // Don't layout unless we 've changed Rectangle newBounds = new Rectangle (caRect. x, caRect. y, bannerSize. x, bannerSize. y); caRect. y + = bannerSize. y; caRect. height-= bannerSize. y; if (!

newBounds.equals(banner.getBounds())) {                        banner.setBounds(newBounds);                }            }                // Include the gutter whether there is a top area or not.        caRect.y += gutterTop;        caRect.height -= gutterTop;        // 'Bottom' spans the entire area        if (bottom != null && bottom.isVisible()) {            Point bottomSize = bottom.computeSize(caRect.width, SWT.DEFAULT,                    true);            caRect.height -= bottomSize.y;            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x, caRect.y                    + caRect.height, caRect.width, bottomSize.y);            if (!newBounds.equals(bottom.getBounds())) {                bottom.setBounds(newBounds);            }        }        caRect.height -= gutterBottom;        // 'Left' spans between 'top' and 'bottom'        if (left != null && left.isVisible()) {            Point leftSize = left.computeSize(SWT.DEFAULT, caRect.height, true);            caRect.x += leftSize.x;            caRect.width -= leftSize.x;            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x - leftSize.x,                    caRect.y, leftSize.x, caRect.height);            if (!newBounds.equals(left.getBounds())) {                left.setBounds(newBounds);            }        }        caRect.x += gutterLeft;        caRect.width -= gutterLeft;        // 'Right' spans between 'top' and 'bottom'        if (right != null && right.isVisible()) {            Point rightSize = right.computeSize(SWT.DEFAULT, caRect.height,                    true);            caRect.width -= rightSize.x;            // Don't layout unless we've changed            Rectangle newBounds = new Rectangle(caRect.x + caRect.width,                    caRect.y, rightSize.x, caRect.height);            if (!newBounds.equals(right.getBounds())) {                right.setBounds(newBounds);            }        }        caRect.width -= gutterRight;        // Don't layout unless we've changed        if (!caRect.equals(clientArea.getBounds())) {            clientArea.setBounds(caRect);        }    }}

 

Finally, we need to replace layout loaded by shell with trimtrimmedpartlayout from TrimmedPartLayout.

Add the following code to preWindowOpen of ApplicationWorkbenchWindowAdvisor:

public class ApplicationWorkbenchWindowAdvisor extends WorkbenchWindowAdvisor {...    public void preWindowOpen() {        IWorkbenchWindowConfigurer configurer = getWindowConfigurer();        configurer.setInitialSize(new Point(600, 400));        configurer.setShowCoolBar(true);        configurer.setShowPerspectiveBar(true);        configurer.setShowStatusLine(true);        configurer.setShowProgressIndicator(false);        configurer.setShowFastViewBars(false);                IWorkbenchWindow workbenchWindow=  configurer.getWindow();        workbenchWindow=  configurer.getWindow();                Shell shell 

= WorkbenchWindow. getShell (); TrimmedPartLayout layout = (TrimmedPartLayout) shell. getLayout (); CustomTrimmedPartLayout customLayout = new partition (layout. clientArea. getParent (); customLayout. clientArea =

 layout.clientArea;        shell.setLayout(customLayout);        Label bannerLabel 

= New Label (customLayout. banner, SWT. SIMPLE | SWT. CENTER); customLayout. banner. setBackground (...); GridData gridData = new GridData (SWT. FILL, SWT. FILL, true, true); bannerLabel. setLayoutData (gridData); Image image =

 Activator.getImageDescriptor(bannerExtensionPoint.getImage()).createImage();        bannerLabel.setImage(image);    }....}

 

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The Code marked as green is used to replace the Layout class.

The Code marked as blue is used to create a Label in the banner and load an image as the banner.