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78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibGUI/GAbstractTableView.h>
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namespace GUI {
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class TreeView : public AbstractTableView {
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C_OBJECT(TreeView)
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public:
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virtual ~TreeView() override;
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virtual void scroll_into_view(const ModelIndex&, Orientation);
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virtual int item_count() const override;
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protected:
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explicit TreeView(Widget*);
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virtual void paint_event(PaintEvent&) override;
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virtual void doubleclick_event(MouseEvent&) override;
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virtual void keydown_event(KeyEvent&) override;
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virtual void did_update_selection() override;
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virtual void did_update_model() override;
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private:
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virtual ModelIndex index_at_event_position(const Point&, bool& is_toggle) const override;
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int item_height() const { return 16; }
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int max_item_width() const { return frame_inner_rect().width(); }
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int indent_width_in_pixels() const { return 16; }
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int icon_size() const { return 16; }
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int icon_spacing() const { return 2; }
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int toggle_size() const { return 9; }
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int text_padding() const { return 2; }
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virtual void toggle_index(const ModelIndex&) override;
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virtual void update_column_sizes() override;
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template<typename Callback>
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void traverse_in_paint_order(Callback) const;
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struct MetadataForIndex;
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MetadataForIndex& ensure_metadata_for_index(const ModelIndex&) const;
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mutable HashMap<void*, NonnullOwnPtr<MetadataForIndex>> m_view_metadata;
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RefPtr<GraphicsBitmap> m_expand_bitmap;
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RefPtr<GraphicsBitmap> m_collapse_bitmap;
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};
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}
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