mirror of
https://github.com/godotengine/godot
synced 2024-09-16 02:57:32 +00:00
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".
451 lines
16 KiB
C++
451 lines
16 KiB
C++
/**************************************************************************/
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/* editor_resource_preview.cpp */
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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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#include "editor_resource_preview.h"
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#include "core/config/project_settings.h"
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#include "core/io/file_access.h"
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#include "core/io/resource_loader.h"
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#include "core/io/resource_saver.h"
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#include "core/object/message_queue.h"
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#include "editor/editor_node.h"
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#include "editor/editor_paths.h"
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#include "editor/editor_scale.h"
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#include "editor/editor_settings.h"
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bool EditorResourcePreviewGenerator::handles(const String &p_type) const {
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bool success = false;
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if (GDVIRTUAL_CALL(_handles, p_type, success)) {
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return success;
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}
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ERR_FAIL_V_MSG(false, "EditorResourcePreviewGenerator::_handles needs to be overridden.");
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}
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Ref<Texture2D> EditorResourcePreviewGenerator::generate(const Ref<Resource> &p_from, const Size2 &p_size) const {
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Ref<Texture2D> preview;
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if (GDVIRTUAL_CALL(_generate, p_from, p_size, preview)) {
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return preview;
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}
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ERR_FAIL_V_MSG(Ref<Texture2D>(), "EditorResourcePreviewGenerator::_generate needs to be overridden.");
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}
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Ref<Texture2D> EditorResourcePreviewGenerator::generate_from_path(const String &p_path, const Size2 &p_size) const {
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Ref<Texture2D> preview;
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if (GDVIRTUAL_CALL(_generate_from_path, p_path, p_size, preview)) {
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return preview;
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}
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Ref<Resource> res = ResourceLoader::load(p_path);
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if (!res.is_valid()) {
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return res;
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}
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return generate(res, p_size);
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}
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bool EditorResourcePreviewGenerator::generate_small_preview_automatically() const {
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bool success = false;
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GDVIRTUAL_CALL(_generate_small_preview_automatically, success);
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return success;
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}
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bool EditorResourcePreviewGenerator::can_generate_small_preview() const {
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bool success = false;
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GDVIRTUAL_CALL(_can_generate_small_preview, success);
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return success;
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}
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void EditorResourcePreviewGenerator::_bind_methods() {
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GDVIRTUAL_BIND(_handles, "type");
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GDVIRTUAL_BIND(_generate, "resource", "size");
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GDVIRTUAL_BIND(_generate_from_path, "path", "size");
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GDVIRTUAL_BIND(_generate_small_preview_automatically);
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GDVIRTUAL_BIND(_can_generate_small_preview);
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}
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EditorResourcePreviewGenerator::EditorResourcePreviewGenerator() {
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}
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EditorResourcePreview *EditorResourcePreview::singleton = nullptr;
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void EditorResourcePreview::_thread_func(void *ud) {
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EditorResourcePreview *erp = (EditorResourcePreview *)ud;
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erp->_thread();
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}
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void EditorResourcePreview::_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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String path = p_str;
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{
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MutexLock lock(preview_mutex);
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uint32_t hash = 0;
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uint64_t modified_time = 0;
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if (p_str.begins_with("ID:")) {
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hash = uint32_t(p_str.get_slicec(':', 2).to_int());
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path = "ID:" + p_str.get_slicec(':', 1);
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} else {
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modified_time = FileAccess::get_modified_time(path);
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}
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Item item;
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item.order = order++;
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item.preview = p_texture;
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item.small_preview = p_small_texture;
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item.last_hash = hash;
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item.modified_time = modified_time;
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cache[path] = item;
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}
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MessageQueue::get_singleton()->push_call(id, p_func, path, p_texture, p_small_texture, p_ud);
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}
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void EditorResourcePreview::_generate_preview(Ref<ImageTexture> &r_texture, Ref<ImageTexture> &r_small_texture, const QueueItem &p_item, const String &cache_base) {
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String type;
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if (p_item.resource.is_valid()) {
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type = p_item.resource->get_class();
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} else {
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type = ResourceLoader::get_resource_type(p_item.path);
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}
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if (type.is_empty()) {
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r_texture = Ref<ImageTexture>();
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r_small_texture = Ref<ImageTexture>();
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return; //could not guess type
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}
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int thumbnail_size = EDITOR_GET("filesystem/file_dialog/thumbnail_size");
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thumbnail_size *= EDSCALE;
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r_texture = Ref<ImageTexture>();
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r_small_texture = Ref<ImageTexture>();
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for (int i = 0; i < preview_generators.size(); i++) {
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if (!preview_generators[i]->handles(type)) {
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continue;
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}
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Ref<Texture2D> generated;
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if (p_item.resource.is_valid()) {
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generated = preview_generators[i]->generate(p_item.resource, Vector2(thumbnail_size, thumbnail_size));
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} else {
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generated = preview_generators[i]->generate_from_path(p_item.path, Vector2(thumbnail_size, thumbnail_size));
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}
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r_texture = generated;
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int small_thumbnail_size = EditorNode::get_singleton()->get_theme_base()->get_theme_icon(SNAME("Object"), SNAME("EditorIcons"))->get_width(); // Kind of a workaround to retrieve the default icon size
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if (preview_generators[i]->can_generate_small_preview()) {
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Ref<Texture2D> generated_small;
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if (p_item.resource.is_valid()) {
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generated_small = preview_generators[i]->generate(p_item.resource, Vector2(small_thumbnail_size, small_thumbnail_size));
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} else {
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generated_small = preview_generators[i]->generate_from_path(p_item.path, Vector2(small_thumbnail_size, small_thumbnail_size));
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}
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r_small_texture = generated_small;
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}
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if (!r_small_texture.is_valid() && r_texture.is_valid() && preview_generators[i]->generate_small_preview_automatically()) {
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Ref<Image> small_image = r_texture->get_image();
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small_image = small_image->duplicate();
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small_image->resize(small_thumbnail_size, small_thumbnail_size, Image::INTERPOLATE_CUBIC);
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r_small_texture.instantiate();
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r_small_texture->set_image(small_image);
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}
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break;
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}
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if (!p_item.resource.is_valid()) {
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// cache the preview in case it's a resource on disk
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if (r_texture.is_valid()) {
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//wow it generated a preview... save cache
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bool has_small_texture = r_small_texture.is_valid();
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ResourceSaver::save(r_texture, cache_base + ".png");
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if (has_small_texture) {
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ResourceSaver::save(r_small_texture, cache_base + "_small.png");
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}
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Ref<FileAccess> f = FileAccess::open(cache_base + ".txt", FileAccess::WRITE);
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ERR_FAIL_COND_MSG(f.is_null(), "Cannot create file '" + cache_base + ".txt'. Check user write permissions.");
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f->store_line(itos(thumbnail_size));
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f->store_line(itos(has_small_texture));
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f->store_line(itos(FileAccess::get_modified_time(p_item.path)));
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f->store_line(FileAccess::get_md5(p_item.path));
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}
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}
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}
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void EditorResourcePreview::_iterate() {
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preview_mutex.lock();
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if (queue.size()) {
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QueueItem item = queue.front()->get();
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queue.pop_front();
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if (cache.has(item.path)) {
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//already has it because someone loaded it, just let it know it's ready
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String path = item.path;
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if (item.resource.is_valid()) {
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path += ":" + itos(cache[item.path].last_hash); //keep last hash (see description of what this is in condition below)
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}
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_preview_ready(path, cache[item.path].preview, cache[item.path].small_preview, item.id, item.function, item.userdata);
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preview_mutex.unlock();
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} else {
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preview_mutex.unlock();
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Ref<ImageTexture> texture;
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Ref<ImageTexture> small_texture;
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int thumbnail_size = EDITOR_GET("filesystem/file_dialog/thumbnail_size");
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thumbnail_size *= EDSCALE;
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if (item.resource.is_valid()) {
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_generate_preview(texture, small_texture, item, String());
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//adding hash to the end of path (should be ID:<objid>:<hash>) because of 5 argument limit to call_deferred
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_preview_ready(item.path + ":" + itos(item.resource->hash_edited_version()), texture, small_texture, item.id, item.function, item.userdata);
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} else {
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String temp_path = EditorPaths::get_singleton()->get_cache_dir();
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String cache_base = ProjectSettings::get_singleton()->globalize_path(item.path).md5_text();
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cache_base = temp_path.path_join("resthumb-" + cache_base);
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//does not have it, try to load a cached thumbnail
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String file = cache_base + ".txt";
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Ref<FileAccess> f = FileAccess::open(file, FileAccess::READ);
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if (f.is_null()) {
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// No cache found, generate
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_generate_preview(texture, small_texture, item, cache_base);
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} else {
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uint64_t modtime = FileAccess::get_modified_time(item.path);
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int tsize = f->get_line().to_int();
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bool has_small_texture = f->get_line().to_int();
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uint64_t last_modtime = f->get_line().to_int();
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bool cache_valid = true;
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if (tsize != thumbnail_size) {
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cache_valid = false;
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f.unref();
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} else if (last_modtime != modtime) {
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String last_md5 = f->get_line();
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String md5 = FileAccess::get_md5(item.path);
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f.unref();
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if (last_md5 != md5) {
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cache_valid = false;
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} else {
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//update modified time
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Ref<FileAccess> f2 = FileAccess::open(file, FileAccess::WRITE);
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if (f2.is_null()) {
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// Not returning as this would leave the thread hanging and would require
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// some proper cleanup/disabling of resource preview generation.
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ERR_PRINT("Cannot create file '" + file + "'. Check user write permissions.");
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} else {
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f2->store_line(itos(thumbnail_size));
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f2->store_line(itos(has_small_texture));
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f2->store_line(itos(modtime));
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f2->store_line(md5);
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}
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}
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} else {
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f.unref();
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}
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if (cache_valid) {
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Ref<Image> img;
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img.instantiate();
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Ref<Image> small_img;
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small_img.instantiate();
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if (img->load(cache_base + ".png") != OK) {
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cache_valid = false;
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} else {
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texture.instantiate();
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texture->set_image(img);
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if (has_small_texture) {
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if (small_img->load(cache_base + "_small.png") != OK) {
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cache_valid = false;
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} else {
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small_texture.instantiate();
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small_texture->set_image(small_img);
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}
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}
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}
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}
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if (!cache_valid) {
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_generate_preview(texture, small_texture, item, cache_base);
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}
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}
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_preview_ready(item.path, texture, small_texture, item.id, item.function, item.userdata);
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}
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}
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} else {
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preview_mutex.unlock();
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}
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}
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void EditorResourcePreview::_thread() {
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exited.clear();
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while (!exit.is_set()) {
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preview_sem.wait();
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_iterate();
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}
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exited.set();
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}
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void EditorResourcePreview::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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ERR_FAIL_NULL(p_receiver);
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ERR_FAIL_COND(!p_res.is_valid());
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{
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MutexLock lock(preview_mutex);
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String path_id = "ID:" + itos(p_res->get_instance_id());
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if (cache.has(path_id) && cache[path_id].last_hash == p_res->hash_edited_version()) {
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cache[path_id].order = order++;
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p_receiver->call(p_receiver_func, path_id, cache[path_id].preview, cache[path_id].small_preview, p_userdata);
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return;
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}
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cache.erase(path_id); //erase if exists, since it will be regen
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QueueItem item;
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item.function = p_receiver_func;
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item.id = p_receiver->get_instance_id();
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item.resource = p_res;
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item.path = path_id;
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item.userdata = p_userdata;
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queue.push_back(item);
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}
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preview_sem.post();
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}
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void EditorResourcePreview::queue_resource_preview(const String &p_path, Object *p_receiver, const StringName &p_receiver_func, const Variant &p_userdata) {
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ERR_FAIL_NULL(p_receiver);
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{
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MutexLock lock(preview_mutex);
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if (cache.has(p_path)) {
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cache[p_path].order = order++;
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p_receiver->call(p_receiver_func, p_path, cache[p_path].preview, cache[p_path].small_preview, p_userdata);
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return;
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}
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QueueItem item;
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item.function = p_receiver_func;
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item.id = p_receiver->get_instance_id();
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item.path = p_path;
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item.userdata = p_userdata;
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queue.push_back(item);
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}
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preview_sem.post();
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}
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void EditorResourcePreview::add_preview_generator(const Ref<EditorResourcePreviewGenerator> &p_generator) {
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preview_generators.push_back(p_generator);
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}
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void EditorResourcePreview::remove_preview_generator(const Ref<EditorResourcePreviewGenerator> &p_generator) {
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preview_generators.erase(p_generator);
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}
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EditorResourcePreview *EditorResourcePreview::get_singleton() {
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return singleton;
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}
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void EditorResourcePreview::_bind_methods() {
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ClassDB::bind_method("_preview_ready", &EditorResourcePreview::_preview_ready);
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ClassDB::bind_method(D_METHOD("queue_resource_preview", "path", "receiver", "receiver_func", "userdata"), &EditorResourcePreview::queue_resource_preview);
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ClassDB::bind_method(D_METHOD("queue_edited_resource_preview", "resource", "receiver", "receiver_func", "userdata"), &EditorResourcePreview::queue_edited_resource_preview);
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ClassDB::bind_method(D_METHOD("add_preview_generator", "generator"), &EditorResourcePreview::add_preview_generator);
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ClassDB::bind_method(D_METHOD("remove_preview_generator", "generator"), &EditorResourcePreview::remove_preview_generator);
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ClassDB::bind_method(D_METHOD("check_for_invalidation", "path"), &EditorResourcePreview::check_for_invalidation);
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ADD_SIGNAL(MethodInfo("preview_invalidated", PropertyInfo(Variant::STRING, "path")));
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}
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void EditorResourcePreview::check_for_invalidation(const String &p_path) {
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bool call_invalidated = false;
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{
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MutexLock lock(preview_mutex);
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if (cache.has(p_path)) {
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uint64_t modified_time = FileAccess::get_modified_time(p_path);
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if (modified_time != cache[p_path].modified_time) {
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cache.erase(p_path);
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call_invalidated = true;
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}
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}
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}
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if (call_invalidated) { //do outside mutex
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call_deferred(SNAME("emit_signal"), "preview_invalidated", p_path);
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}
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}
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void EditorResourcePreview::start() {
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ERR_FAIL_COND_MSG(thread.is_started(), "Thread already started.");
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thread.start(_thread_func, this);
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}
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void EditorResourcePreview::stop() {
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if (thread.is_started()) {
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exit.set();
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preview_sem.post();
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while (!exited.is_set()) {
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OS::get_singleton()->delay_usec(10000);
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RenderingServer::get_singleton()->sync(); //sync pending stuff, as thread may be blocked on rendering server
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}
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thread.wait_to_finish();
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}
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}
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EditorResourcePreview::EditorResourcePreview() {
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singleton = this;
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order = 0;
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}
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EditorResourcePreview::~EditorResourcePreview() {
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stop();
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}
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