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/*
* Copyright (c) 2021, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGUI/Frame.h>
#include <LibGfx/Rect.h>
namespace SpaceAnalyzer {
struct TreeMapNode {
virtual String name() const = 0;
virtual i64 area() const = 0;
virtual size_t num_children() const = 0;
virtual const TreeMapNode& child_at(size_t i) const = 0;
virtual void sort_children_by_area() const = 0;
protected:
virtual ~TreeMapNode() = default;
};
struct TreeMap : public RefCounted<TreeMap> {
virtual ~TreeMap() { }
virtual const TreeMapNode& root() const = 0;
};
class TreeMapWidget final : public GUI::Frame {
C_OBJECT(TreeMapWidget)
public:
virtual ~TreeMapWidget() override;
Function<void()> on_path_change;
Function<void(GUI::ContextMenuEvent&)> on_context_menu_request;
size_t path_size() const;
const TreeMapNode* path_node(size_t n) const;
size_t viewpoint() const;
void set_viewpoint(size_t);
void set_tree(RefPtr<TreeMap> tree);
private:
TreeMapWidget();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void doubleclick_event(GUI::MouseEvent&) override;
virtual void mousewheel_event(GUI::MouseEvent&) override;
virtual void context_menu_event(GUI::ContextMenuEvent&) override;
bool rect_can_contain_children(const Gfx::IntRect& rect) const;
bool rect_can_contain_label(const Gfx::IntRect& rect) const;
enum class HasLabel {
Yes,
No
};
enum class IsRemainder {
Yes,
No
};
template<typename Function>
void lay_out_children(const TreeMapNode&, const Gfx::IntRect&, int depth, Function);
void paint_cell_frame(GUI::Painter&, const TreeMapNode&, const Gfx::IntRect&, const Gfx::IntRect&, int depth, HasLabel has_label) const;
Vector<int> path_to_position(const Gfx::IntPoint&);
RefPtr<TreeMap> m_tree;
Vector<int> m_path;
size_t m_viewpoint;
const void* m_selected_node_cache;
};
}
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