138 lines
5.2 KiB
C++
138 lines
5.2 KiB
C++
#pragma once
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#include "foundation/result.h"
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#include "paint/blend.h"
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#include <cstdint>
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#include <span>
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#include <string>
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#include <string_view>
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#include <vector>
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namespace pp::document {
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constexpr std::uint32_t max_canvas_dimension = 131072;
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constexpr std::uint32_t max_layer_count = 1024;
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constexpr std::uint32_t max_frame_count = 100000;
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constexpr std::uint32_t min_frame_duration_ms = 1;
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constexpr std::size_t min_document_history_entries = 2;
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constexpr std::size_t max_document_history_entries = 10000;
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constexpr std::size_t max_layer_name_length = 128;
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constexpr std::uint32_t cube_face_count = 6;
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constexpr std::uint32_t rgba8_components = 4;
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constexpr std::uint64_t max_face_pixel_payload_bytes = 1024ULL * 1024ULL * 1024ULL;
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struct DocumentConfig {
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std::uint32_t width = 0;
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std::uint32_t height = 0;
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std::uint32_t layer_count = 1;
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};
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struct LayerFacePixels {
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std::uint32_t face_index = 0;
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std::uint32_t x = 0;
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std::uint32_t y = 0;
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std::uint32_t width = 0;
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std::uint32_t height = 0;
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std::vector<std::uint8_t> rgba8;
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};
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struct AnimationFrame {
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std::uint32_t duration_ms = 100;
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std::vector<LayerFacePixels> face_pixels;
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};
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struct Layer {
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std::string name;
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bool visible = true;
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bool alpha_locked = false;
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float opacity = 1.0F;
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pp::paint::BlendMode blend_mode = pp::paint::BlendMode::normal;
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std::vector<AnimationFrame> frames;
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};
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struct DocumentLayerConfig {
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std::string_view name;
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bool visible = true;
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bool alpha_locked = false;
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float opacity = 1.0F;
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pp::paint::BlendMode blend_mode = pp::paint::BlendMode::normal;
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std::span<const AnimationFrame> frames;
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};
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struct DocumentSnapshotConfig {
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std::uint32_t width = 0;
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std::uint32_t height = 0;
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std::span<const DocumentLayerConfig> layers;
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std::span<const AnimationFrame> frames;
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};
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class CanvasDocument {
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public:
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[[nodiscard]] static pp::foundation::Result<CanvasDocument> create(DocumentConfig config);
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[[nodiscard]] static pp::foundation::Result<CanvasDocument> create_from_snapshot(DocumentSnapshotConfig config);
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[[nodiscard]] std::uint32_t width() const noexcept;
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[[nodiscard]] std::uint32_t height() const noexcept;
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[[nodiscard]] std::size_t active_layer_index() const noexcept;
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[[nodiscard]] std::size_t active_frame_index() const noexcept;
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[[nodiscard]] std::uint64_t animation_duration_ms() const noexcept;
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[[nodiscard]] pp::foundation::Result<std::uint64_t> layer_animation_duration_ms(std::size_t index) const noexcept;
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[[nodiscard]] std::size_t face_pixel_payload_count() const noexcept;
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[[nodiscard]] std::span<const Layer> layers() const noexcept;
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[[nodiscard]] std::span<const AnimationFrame> frames() const noexcept;
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[[nodiscard]] pp::foundation::Result<std::size_t> add_layer(std::string_view name);
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[[nodiscard]] pp::foundation::Status remove_layer(std::size_t index);
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[[nodiscard]] pp::foundation::Status move_layer(std::size_t from, std::size_t to);
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[[nodiscard]] pp::foundation::Status set_active_layer(std::size_t index) noexcept;
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[[nodiscard]] pp::foundation::Status rename_layer(std::size_t index, std::string_view name);
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[[nodiscard]] pp::foundation::Status set_layer_visible(std::size_t index, bool visible) noexcept;
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[[nodiscard]] pp::foundation::Status set_layer_alpha_locked(std::size_t index, bool alpha_locked) noexcept;
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[[nodiscard]] pp::foundation::Status set_layer_opacity(std::size_t index, float opacity) noexcept;
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[[nodiscard]] pp::foundation::Status set_layer_blend_mode(std::size_t index, pp::paint::BlendMode blend_mode) noexcept;
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[[nodiscard]] pp::foundation::Result<std::size_t> add_frame(std::uint32_t duration_ms);
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[[nodiscard]] pp::foundation::Result<std::size_t> duplicate_frame(std::size_t index);
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[[nodiscard]] pp::foundation::Status remove_frame(std::size_t index);
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[[nodiscard]] pp::foundation::Status move_frame(std::size_t from, std::size_t to);
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[[nodiscard]] pp::foundation::Status set_frame_duration(std::size_t index, std::uint32_t duration_ms) noexcept;
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[[nodiscard]] pp::foundation::Status set_active_frame(std::size_t index) noexcept;
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[[nodiscard]] pp::foundation::Status set_layer_frame_face_pixels(
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std::size_t layer_index,
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std::size_t frame_index,
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LayerFacePixels pixels);
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private:
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std::uint32_t width_ = 0;
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std::uint32_t height_ = 0;
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std::size_t active_layer_index_ = 0;
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std::size_t active_frame_index_ = 0;
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std::vector<Layer> layers_;
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std::vector<AnimationFrame> frames_;
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};
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class DocumentHistory {
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public:
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[[nodiscard]] static pp::foundation::Result<DocumentHistory> create(
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CanvasDocument initial_document,
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std::size_t max_entries = 256);
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[[nodiscard]] const CanvasDocument& current() const noexcept;
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[[nodiscard]] std::size_t size() const noexcept;
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[[nodiscard]] std::size_t current_index() const noexcept;
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[[nodiscard]] bool can_undo() const noexcept;
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[[nodiscard]] bool can_redo() const noexcept;
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[[nodiscard]] pp::foundation::Status apply(CanvasDocument next_document);
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[[nodiscard]] pp::foundation::Status undo() noexcept;
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[[nodiscard]] pp::foundation::Status redo() noexcept;
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private:
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std::size_t max_entries_ = 0;
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std::size_t current_index_ = 0;
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std::vector<CanvasDocument> entries_;
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};
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}
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