ImageWidget.h

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// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2023 www.open3d.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include "open3d/visualization/gui/Widget.h"
 
#include "open3d/visualization/gui/UIImage.h"
 
namespace open3d {
namespace visualization {
namespace gui {
 
class ImageWidget : public Widget {
    using Super = Widget;
 
public:
    ImageWidget();
    explicit ImageWidget(const char* image_path);
    explicit ImageWidget(std::shared_ptr<geometry::Image> image);
    explicit ImageWidget(std::shared_ptr<t::geometry::Image> image);
    explicit ImageWidget(visualization::rendering::TextureHandle texture_id,
                         float u0 = 0.0f,
                         float v0 = 0.0f,
                         float u1 = 1.0f,
                         float v1 = 1.0f);
    ImageWidget(std::shared_ptr<UIImage> image);
    ~ImageWidget();
 
    void UpdateImage(std::shared_ptr<geometry::Image> image);
    void UpdateImage(std::shared_ptr<t::geometry::Image> image);
 
    std::shared_ptr<UIImage> GetUIImage() const;
    void SetUIImage(std::shared_ptr<UIImage> image);
 
    Size CalcPreferredSize(const LayoutContext& context,
                           const Constraints& constraints) const override;
 
    void Layout(const LayoutContext& context) override;
 
    DrawResult Draw(const DrawContext& context) override;
 
private:
    struct Impl;
    std::unique_ptr<Impl> impl_;
};
 
}  // namespace gui
}  // namespace visualization
}  // namespace open3d