ui::OpacityLayerScope¶

Header: winui/render/Renderer.hpp.

Pushes an opacity layer when it is made and pops it when it goes out of scope.

Example:

class FadedSwatch : public ui::Element
{
    ui::Color color_ = ui::colors::Black;

    void render_override(ui::Renderer& r, const ui::RenderContext&) const override
    {
        const ui::OpacityLayerScope faded{r, 0.4f};
        r.fill_rounded_rect(bounds(), 4.0f, color_); // drawn at 40 %
    }
};

OpacityLayerScope¶

OpacityLayerScope(Renderer& renderer, float opacity)

Draws everything in the scope as one layer at opacity (Renderer::push_opacity_layer()).

~OpacityLayerScope¶

~OpacityLayerScope()

Pops the layer.

OpacityLayerScope¶

OpacityLayerScope(const OpacityLayerScope&) = delete

operator=¶

OpacityLayerScope& operator=(const OpacityLayerScope&) = delete