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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Image.h"
#include <LibGUI/AbstractScrollableWidget.h>
namespace PixelPaint {
class LayerListWidget final
: public GUI::AbstractScrollableWidget
, ImageClient {
C_OBJECT(LayerListWidget);
public:
virtual ~LayerListWidget() override;
void set_image(Image*);
void set_selected_layer(Layer*);
Function<void(Layer*)> on_layer_select;
Function<void(GUI::ContextMenuEvent&)> on_context_menu_request;
void select_bottom_layer();
void select_top_layer();
void cycle_through_selection(int delta);
private:
explicit LayerListWidget();
virtual void paint_event(GUI::PaintEvent&) override;
virtual void mousedown_event(GUI::MouseEvent&) override;
virtual void mousemove_event(GUI::MouseEvent&) override;
virtual void mouseup_event(GUI::MouseEvent&) override;
virtual void context_menu_event(GUI::ContextMenuEvent&) override;
virtual void resize_event(GUI::ResizeEvent&) override;
virtual void image_did_add_layer(size_t) override;
virtual void image_did_remove_layer(size_t) override;
virtual void image_did_modify_layer(size_t) override;
virtual void image_did_modify_layer_stack() override;
void rebuild_gadgets();
void relayout_gadgets();
size_t hole_index_during_move() const;
struct Gadget {
size_t layer_index { 0 };
Gfx::IntRect rect;
bool is_moving { false };
Gfx::IntPoint movement_delta;
};
void get_gadget_rects(Gadget const&, Gfx::IntRect& outer_rect, Gfx::IntRect& thumbnail_rect, Gfx::IntRect& text_rect);
bool is_moving_gadget() const { return m_moving_gadget_index.has_value(); }
Optional<size_t> gadget_at(Gfx::IntPoint const&);
Vector<Gadget> m_gadgets;
RefPtr<Image> m_image;
Optional<size_t> m_moving_gadget_index;
Gfx::IntPoint m_moving_event_origin;
size_t m_selected_layer_index { 0 };
};
}
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