mirror of
https://github.com/RGBCube/serenity
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f7053059c9
Let's give ourselves the tools needed to update less than the entire image every time we paint. This patch adds plumbing so that Layer invalidations have a modified rect that gets passed on to Image, and then on to ImageEditor.
115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/*
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* Copyright (c) 2020-2021, 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 <AK/HashTable.h>
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/Result.h>
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#include <AK/Vector.h>
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#include <LibGUI/Command.h>
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#include <LibGUI/Forward.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/Size.h>
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namespace PixelPaint {
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class Layer;
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class ImageClient {
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public:
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virtual void image_did_add_layer(size_t) { }
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virtual void image_did_remove_layer(size_t) { }
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virtual void image_did_modify_layer(size_t) { }
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virtual void image_did_modify_layer_stack() { }
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virtual void image_did_change(Gfx::IntRect const&) { }
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virtual void image_select_layer(Layer*) { }
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virtual void image_did_change_title(String const&) { }
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protected:
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virtual ~ImageClient() = default;
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};
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class Image : public RefCounted<Image> {
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public:
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static RefPtr<Image> try_create_with_size(Gfx::IntSize const&);
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static Result<NonnullRefPtr<Image>, String> try_create_from_file(String const& file_path);
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static RefPtr<Image> try_create_from_bitmap(NonnullRefPtr<Gfx::Bitmap>);
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// This generates a new Bitmap with the final image (all layers composed according to their attributes.)
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RefPtr<Gfx::Bitmap> try_compose_bitmap(Gfx::BitmapFormat format) const;
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size_t layer_count() const { return m_layers.size(); }
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Layer const& layer(size_t index) const { return m_layers.at(index); }
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Layer& layer(size_t index) { return m_layers.at(index); }
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Gfx::IntSize const& size() const { return m_size; }
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Gfx::IntRect rect() const { return { {}, m_size }; }
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void add_layer(NonnullRefPtr<Layer>);
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RefPtr<Image> take_snapshot() const;
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void restore_snapshot(Image const&);
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void paint_into(GUI::Painter&, Gfx::IntRect const& dest_rect) const;
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Result<void, String> write_to_file(String const& file_path) const;
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Result<void, String> export_bmp_to_file(String const& file_path, bool preserve_alpha_channel);
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Result<void, String> export_png_to_file(String const& file_path, bool preserve_alpha_channel);
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void move_layer_to_front(Layer&);
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void move_layer_to_back(Layer&);
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void move_layer_up(Layer&);
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void move_layer_down(Layer&);
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void change_layer_index(size_t old_index, size_t new_index);
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void remove_layer(Layer&);
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void select_layer(Layer*);
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void add_client(ImageClient&);
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void remove_client(ImageClient&);
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void layer_did_modify_bitmap(Badge<Layer>, Layer const&, Gfx::IntRect const& modified_layer_rect);
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void layer_did_modify_properties(Badge<Layer>, Layer const&);
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size_t index_of(Layer const&) const;
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String const& path() const { return m_path; }
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void set_path(String);
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String const& title() const { return m_title; }
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void set_title(String);
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private:
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explicit Image(Gfx::IntSize const&);
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static Result<NonnullRefPtr<Image>, String> try_create_from_pixel_paint_file(String const& file_path);
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void did_change(Gfx::IntRect const& modified_rect = {});
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void did_modify_layer_stack();
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String m_path;
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String m_title;
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Gfx::IntSize m_size;
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NonnullRefPtrVector<Layer> m_layers;
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HashTable<ImageClient*> m_clients;
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};
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class ImageUndoCommand : public GUI::Command {
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public:
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ImageUndoCommand(Image& image);
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virtual void undo() override;
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virtual void redo() override;
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private:
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RefPtr<Image> m_snapshot;
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Image& m_image;
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};
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}
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