76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
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// ----------------------------------------------------------------------------
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// - Open3D: www.open3d.org -
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// ----------------------------------------------------------------------------
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// Copyright (c) 2018-2023 www.open3d.org
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// SPDX-License-Identifier: MIT
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// ----------------------------------------------------------------------------
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#pragma once
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#include <functional>
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#include "open3d/visualization/gui/Widget.h"
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namespace open3d {
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namespace visualization {
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namespace gui {
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class Combobox : public Widget {
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public:
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Combobox();
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explicit Combobox(const std::vector<const char*>& items);
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~Combobox() override;
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void ClearItems();
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/// Adds an item to the combobox. Its index is the order in which it is
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/// added, so the first item's index is 0, the second is 1, etc.
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/// Returns the index of the new item.
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int AddItem(const char* name);
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/// Changes the item's text. \p index must be valid, otherwise
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/// nothing will happen.
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void ChangeItem(int index, const char* name);
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/// If an item exists with \p orig_name, it will be changed to
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/// \p new_name.
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void ChangeItem(const char* orig_name, const char* new_name);
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/// Removes the first item matching the given text.
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void RemoveItem(const char* name);
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/// Removes the item at \p index.
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void RemoveItem(int index);
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int GetNumberOfItems() const;
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/// Returns the text of the item at \p index. \p index must be
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/// valid.
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const char* GetItem(int index) const;
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int GetSelectedIndex() const;
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/// Returns the text of the selected value, or "" if nothing is selected
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const char* GetSelectedValue() const;
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/// Sets the selected item by index. Does not call the onValueChanged
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/// callback.
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void SetSelectedIndex(int index);
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/// Sets the selected item by value. Does nothing if \p value is not an
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/// item, but will return false. Does not call the onValueChanged callback
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bool SetSelectedValue(const char* value);
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Size CalcPreferredSize(const LayoutContext& context,
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const Constraints& constraints) const override;
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DrawResult Draw(const DrawContext& context) override;
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/// Specifies a callback function which will be called when the value
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/// changes as a result of user action.
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void SetOnValueChanged(
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std::function<void(const char*, int)> on_value_changed);
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private:
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struct Impl;
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std::unique_ptr<Impl> impl_;
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};
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} // namespace gui
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} // namespace visualization
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} // namespace open3d
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