WidgetProxy.h

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#pragma once

#include <memory>
#include <vector>

#include "open3d/visualization/gui/Gui.h"
#include "open3d/visualization/gui/Widget.h"

namespace open3d {

namespace visualization {
namespace gui {

class WidgetProxy : public Widget {
public:
    WidgetProxy();
    ~WidgetProxy() override;

    void AddChild(std::shared_ptr<Widget> child) override;
    const std::vector<std::shared_ptr<Widget>> GetChildren() const override;

    virtual void SetWidget(std::shared_ptr<Widget> widget);

    virtual std::shared_ptr<Widget> GetWidget();

    const Rect& GetFrame() const override;
    void SetFrame(const Rect& f) override;

    const Color& GetBackgroundColor() const override;
    bool IsDefaultBackgroundColor() const override;
    void SetBackgroundColor(const Color& color) override;

    bool IsVisible() const override;
    void SetVisible(bool vis) override;

    bool IsEnabled() const override;
    void SetEnabled(bool enabled) override;
    void SetTooltip(const char* text) override;
    const char* GetTooltip() const override;
    Size CalcPreferredSize(const LayoutContext& context,
                           const Constraints& constraints) const override;
    Size CalcMinimumSize(const LayoutContext& context) const override;
    void Layout(const LayoutContext& context) override;
    DrawResult Draw(const DrawContext& context) override;
    EventResult Mouse(const MouseEvent& e) override;
    EventResult Key(const KeyEvent& e) override;
    DrawResult Tick(const TickEvent& e) override;

protected:
    virtual std::shared_ptr<Widget> GetActiveWidget() const;

private:
    struct Impl;
    std::unique_ptr<Impl> impl_;
};

}  // namespace gui
}  // namespace visualization
}  // namespace open3d