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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
128 lines
5.1 KiB
C++
128 lines
5.1 KiB
C++
/**************************************************************************/
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/* editor_resource_preview.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef EDITOR_RESOURCE_PREVIEW_H
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#define EDITOR_RESOURCE_PREVIEW_H
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#include "core/os/semaphore.h"
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#include "core/os/thread.h"
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#include "core/templates/safe_refcount.h"
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#include "scene/main/node.h"
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#include "scene/resources/texture.h"
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class EditorResourcePreviewGenerator : public RefCounted {
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GDCLASS(EditorResourcePreviewGenerator, RefCounted);
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protected:
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static void _bind_methods();
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GDVIRTUAL1RC(bool, _handles, String)
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GDVIRTUAL2RC(Ref<Texture2D>, _generate, Ref<Resource>, Vector2i)
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GDVIRTUAL2RC(Ref<Texture2D>, _generate_from_path, String, Vector2i)
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GDVIRTUAL0RC(bool, _generate_small_preview_automatically)
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GDVIRTUAL0RC(bool, _can_generate_small_preview)
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public:
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virtual bool handles(const String &p_type) const;
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virtual Ref<Texture2D> generate(const Ref<Resource> &p_from, const Size2 &p_size) const;
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virtual Ref<Texture2D> generate_from_path(const String &p_path, const Size2 &p_size) const;
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virtual bool generate_small_preview_automatically() const;
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virtual bool can_generate_small_preview() const;
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EditorResourcePreviewGenerator();
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};
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class EditorResourcePreview : public Node {
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GDCLASS(EditorResourcePreview, Node);
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static EditorResourcePreview *singleton;
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struct QueueItem {
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Ref<Resource> resource;
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String path;
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ObjectID id;
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StringName function;
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Variant userdata;
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};
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List<QueueItem> queue;
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Mutex preview_mutex;
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Semaphore preview_sem;
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Thread thread;
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SafeFlag exit;
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SafeFlag exited;
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struct Item {
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Ref<Texture2D> preview;
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Ref<Texture2D> small_preview;
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int order = 0;
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uint32_t last_hash = 0;
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uint64_t modified_time = 0;
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};
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int order;
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HashMap<String, Item> cache;
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void _preview_ready(const String &p_str, const Ref<Texture2D> &p_texture, const Ref<Texture2D> &p_small_texture, ObjectID id, const StringName &p_func, const Variant &p_ud);
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void _generate_preview(Ref<ImageTexture> &r_texture, Ref<ImageTexture> &r_small_texture, const QueueItem &p_item, const String &cache_base);
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static void _thread_func(void *ud);
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void _thread();
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void _iterate();
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Vector<Ref<EditorResourcePreviewGenerator>> preview_generators;
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protected:
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static void _bind_methods();
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public:
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static EditorResourcePreview *get_singleton();
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// p_receiver_func callback has signature (String p_path, Ref<Texture2D> p_preview, Ref<Texture2D> p_preview_small, Variant p_userdata)
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// p_preview will be null if there was an error
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void queue_resource_preview(const String &p_path, Object *p_receiver, const StringName &p_receiver_func, const Variant &p_userdata);
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void queue_edited_resource_preview(const Ref<Resource> &p_res, Object *p_receiver, const StringName &p_receiver_func, const Variant &p_userdata);
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void add_preview_generator(const Ref<EditorResourcePreviewGenerator> &p_generator);
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void remove_preview_generator(const Ref<EditorResourcePreviewGenerator> &p_generator);
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void check_for_invalidation(const String &p_path);
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void start();
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void stop();
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EditorResourcePreview();
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~EditorResourcePreview();
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};
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#endif // EDITOR_RESOURCE_PREVIEW_H
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