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https://github.com/RGBCube/serenity
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fd898be51a
When a layer bitmap is modified, we don't have to repaint the whole layer gadget in the layer list, only the little thumbnail. :^)
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include "Image.h"
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#include <LibGUI/AbstractScrollableWidget.h>
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namespace PixelPaint {
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class LayerListWidget final
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: public GUI::AbstractScrollableWidget
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, ImageClient {
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C_OBJECT(LayerListWidget);
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public:
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virtual ~LayerListWidget() override;
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void set_image(Image*);
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void set_selected_layer(Layer*);
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Function<void(Layer*)> on_layer_select;
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Function<void(GUI::ContextMenuEvent&)> on_context_menu_request;
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void select_bottom_layer();
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void select_top_layer();
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void cycle_through_selection(int delta);
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private:
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explicit LayerListWidget();
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virtual void paint_event(GUI::PaintEvent&) override;
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virtual void mousedown_event(GUI::MouseEvent&) override;
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virtual void mousemove_event(GUI::MouseEvent&) override;
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virtual void mouseup_event(GUI::MouseEvent&) override;
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virtual void context_menu_event(GUI::ContextMenuEvent&) override;
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virtual void resize_event(GUI::ResizeEvent&) override;
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virtual void image_did_add_layer(size_t) override;
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virtual void image_did_remove_layer(size_t) override;
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virtual void image_did_modify_layer_properties(size_t) override;
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virtual void image_did_modify_layer_bitmap(size_t) override;
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virtual void image_did_modify_layer_stack() override;
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void rebuild_gadgets();
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void relayout_gadgets();
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size_t hole_index_during_move() const;
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struct Gadget {
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size_t layer_index { 0 };
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Gfx::IntRect rect;
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bool is_moving { false };
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Gfx::IntPoint movement_delta;
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};
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void get_gadget_rects(Gadget const&, Gfx::IntRect& outer_rect, Gfx::IntRect& thumbnail_rect, Gfx::IntRect& text_rect);
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bool is_moving_gadget() const { return m_moving_gadget_index.has_value(); }
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Optional<size_t> gadget_at(Gfx::IntPoint const&);
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Vector<Gadget> m_gadgets;
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RefPtr<Image> m_image;
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Optional<size_t> m_moving_gadget_index;
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Gfx::IntPoint m_moving_event_origin;
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size_t m_selected_layer_index { 0 };
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};
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}
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