Calculating a Toolbar’s Height

NSToolbar does not currently provide a method for returning its height. The Objective-C function in Listing 1 calculates the height of the toolbar in a window, returning 0 if the toolbar is hidden.

Listing 1 Objective-C function to calculate toolbar height

float ToolbarHeightForWindow(NSWindow *window)

    NSToolbar *toolbar;

    float toolbarHeight = 0.0;

    NSRect windowFrame;

    toolbar = [window toolbar];

    if(toolbar && [toolbar isVisible])

        windowFrame = [NSWindow contentRectForFrameRect:[window frame]

                                styleMask:[window styleMask]];

        toolbarHeight = NSHeight(windowFrame)

                        - NSHeight([[window contentView] frame]);

    return toolbarHeight;

In Java, you can calculate a toolbar’s height using the ToolbarHeightForWindow static method using the class in Listing 2.

Listing 2 Java static method to calculate toolbar height

public class ToolbarHeightCalculator

    public static float ToolbarHeightForWindow(NSWindow window)

        NSToolbar toolbar = window.toolbar();

        float toolbarHeight = (float)0.0;

        if(toolbar != null && toolbar.isVisible())

            NSRect windowFrame = NSWindow.contentRectForFrameRect(

                                 window.frame(), window.styleMask());

            toolbarHeight = windowFrame.height()

                            - window.contentView().frame().height();

        return toolbarHeight;

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Last updated: 2007-01-08

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