ComponentBoundsConstrainer - Drag within a fixed area

General JUCE discussion
1

I am attempting to drag a component within a fixed area, but I am not having any joy in doing so. I figure I must be doing something obviously wrong, but am new to C++ and Juce.. .

My component is drawn, and the required limits are within an area of the main component, so can't use the setMinimumOnscreenAmounts, so am attempting to use checkBounds. In my component I have a constrainer,  as such:

ComponentBoundsConstrainer constrainer;

In my main component I calculate the Rectangle<int> limits to restrict the area in which the component may move, which is provided to the component. In my components mouseDrag I attempt to use the constrainer.checkBounds to limit where it can be dragged to.

void myComponent::mouseDrag (const MouseEvent& e)
{

    Rectangle<int> bounds(0, 0, 100, 100);
    Rectangle<int> previousBounds(getX(), getY(), getWidth(), getHeight());
    constrainer.checkBounds(bounds, previousBounds, limits, false, false, false, false);
}

But this appears to have no effect... I'm obviously doing something wrong, so, um, what part am I missing?

2

Well, you're missing the part where you actually do something with the rectangle that you've created!

(But regardless of that, the code you wrote doesn't appear to make much sense anyway)

3

Skinned the cat a different way thats much more suitable for my requirements.

4

BTW the ComponentDragger class might be useful.