mirror of
https://github.com/SerenityOS/serenity
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60 lines
2.1 KiB
C++
60 lines
2.1 KiB
C++
/*
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* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@serenityos.org>
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* Copyright (c) 2023, 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 "Slide.h"
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#include <AK/DeprecatedString.h>
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#include <AK/HashMap.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/Vector.h>
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#include <LibGfx/Size.h>
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static constexpr int const PRESENTATION_FORMAT_VERSION = 1;
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// In-memory representation of the presentation stored in a file.
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// This class also contains all the parser code for loading .presenter files.
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class Presentation {
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public:
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~Presentation() = default;
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static ErrorOr<NonnullOwnPtr<Presentation>> load_from_file(StringView file_name);
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StringView title() const;
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StringView author() const;
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Gfx::IntSize normative_size() const { return m_normative_size; }
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Slide const& current_slide() const { return m_slides[m_current_slide.value()]; }
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unsigned current_slide_number() const { return m_current_slide.value(); }
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unsigned current_frame_in_slide_number() const { return m_current_frame_in_slide.value(); }
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bool has_next_frame() const;
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bool has_previous_frame() const;
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void next_frame();
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void previous_frame();
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void go_to_first_slide();
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ErrorOr<DeprecatedString> render();
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private:
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static HashMap<DeprecatedString, DeprecatedString> parse_metadata(JsonObject const& metadata_object);
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static ErrorOr<Gfx::IntSize> parse_presentation_size(JsonObject const& metadata_object);
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Presentation(Gfx::IntSize normative_size, HashMap<DeprecatedString, DeprecatedString> metadata);
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static NonnullOwnPtr<Presentation> construct(Gfx::IntSize normative_size, HashMap<DeprecatedString, DeprecatedString> metadata);
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void append_slide(Slide slide);
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Vector<Slide> m_slides {};
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// This is not a pixel size, but an abstract size used by the slide objects for relative positioning.
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Gfx::IntSize m_normative_size;
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HashMap<DeprecatedString, DeprecatedString> m_metadata;
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Checked<unsigned> m_current_slide { 0 };
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Checked<unsigned> m_current_frame_in_slide { 0 };
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};
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