Function onMouse

examples/States/ExampleUIStates.cpp:227–293

Mouse press event. This UI will de/activate blocks when you click them and report it as a state change to the plugin. */

      This UI will de/activate blocks when you click them and report it as a state change to the plugin.
    */
    bool onMouse(const MouseEvent& ev) override
    {
        // Test for left-clicked + pressed first.
        if (ev.button != 1 || ! ev.press)
            return false;

        const uint width = getWidth();
        const uint height = getHeight();

        Rectangle<double> r;

        r.setWidth(width/3 - 6);
        r.setHeight(height/3 - 6);

        // handle left, center and right columns
        for (int i=0; i<3; ++i)
        {
            r.setX(3 + i*width/3);

            // top
            r.setY(3);

            if (r.contains(ev.pos))
            {
                // index that this block applies to
                const uint32_t index = 0+i;

                // invert block state
                fParamGrid[index] = !fParamGrid[index];

                // report change to host (and thus plugin)
                setState(getStateKeyFromIndex(index), fParamGrid[index] ? "true" : "false");

                // trigger repaint
                repaint();
                break;
            }

            // middle
            r.setY(3 + height/3);

            if (r.contains(ev.pos))
            {
                // same as before
                const uint32_t index = 3+i;
                fParamGrid[index] = !fParamGrid[index];
                setState(getStateKeyFromIndex(index), fParamGrid[index] ? "true" : "false");
                repaint();
                break;
            }

            // bottom
            r.setY(3 + height*2/3);

            if (r.contains(ev.pos))
            {
                // same as before
                const uint32_t index = 6+i;