Function onMouse

examples/Parameters/ExampleUIParameters.cpp:183–256

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

      This UI will de/activate blocks when you click them and reports it as a parameter 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();
        const uint minwh = std::min(width, height);

        Rectangle<double> r;

        r.setWidth(minwh/3 - 6);
        r.setHeight(minwh/3 - 6);

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

            // top
            r.setY(3);

            if (r.contains(ev.pos))
            {
                // parameter 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)
                editParameter(index, true);
                setParameterValue(index, fParamGrid[index] ? 1.0f : 0.0f);
                editParameter(index, false);

                // trigger repaint
                repaint();
                break;
            }

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

            if (r.contains(ev.pos))
            {
                // same as before
                const uint32_t index = 3+i;
                fParamGrid[index] = !fParamGrid[index];
                editParameter(index, true);
                setParameterValue(index, fParamGrid[index] ? 1.0f : 0.0f);
                editParameter(index, false);
                repaint();
                break;
            }

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