Gui.h

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// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2023 www.open3d.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
namespace open3d {
namespace visualization {
namespace gui {
 
struct Point {
    int x;
    int y;
 
    Point();
    Point(int x_, int y_);
};
 
struct Size {
    int width;
    int height;
 
    Size();
    Size(int w, int h);
};
 
struct Rect {
    int x;
    int y;
    int width;
    int height;
 
    Rect();
    Rect(int x_, int y_, int w_, int h_);
 
    int GetTop() const;
    int GetBottom() const;
    int GetLeft() const;
    int GetRight() const;
 
    bool Contains(int x, int y) const;
    bool Contains(const Point& pt) const;
 
    Rect UnionedWith(const Rect& r) const;
 
    bool operator==(const Rect& other) const;
    bool operator!=(const Rect& other) const;
};
 
enum class BorderShape { NONE = 0, RECT, ROUNDED_RECT };
 
enum class Alignment : unsigned int {
    LEFT = 1,
    HCENTER = 2,
    RIGHT = 3,
    TOP = (1 << 4),
    VCENTER = (2 << 4),
    BOTTOM = (3 << 4),
    CENTER = (2 | (2 << 4))
};
constexpr Alignment operator|(Alignment x, Alignment y) {
    return Alignment((unsigned int)(x) | (unsigned int)(y));
}
 
using FontId = unsigned int;
 
enum class FontStyle {
    NORMAL = 0,
    BOLD = 1,
    ITALIC = 2,
    BOLD_ITALIC = 3  
};
 
class FontContext {
public:
    virtual ~FontContext(){};
 
    virtual void* GetFont(FontId font_id) = 0;
};
 
}  // namespace gui
}  // namespace visualization
}  // namespace open3d