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https://github.com/aseprite/aseprite.git
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8722c8ec16
This already fixes a lot of possible problems that can happen when a script is running and modifying some part of a sprite that is being backed up in a background thread. We still need some work to being able to lock a sprite two or more times in the same thread to write it. E.g. an app.transaction() should lock the sprite for write access, but the script transaction function could call a command, and that command could use a ContextWriter to lock the sprite again. At the moment this is not possible because we need a re-entrant RWLock implementation.
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
// Aseprite
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// Copyright (C) 2020 Igara Studio S.A.
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// Copyright (C) 2001-2018 David Capello
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//
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// This program is distributed under the terms of
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// the End-User License Agreement for Aseprite.
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "app/cmd/layer_from_background.h"
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#include "app/commands/command.h"
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#include "app/context_access.h"
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#include "app/modules/gui.h"
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#include "app/tx.h"
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#include "doc/layer.h"
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#include "doc/sprite.h"
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namespace app {
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class LayerFromBackgroundCommand : public Command {
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public:
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LayerFromBackgroundCommand();
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protected:
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bool onEnabled(Context* context) override;
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void onExecute(Context* context) override;
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};
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LayerFromBackgroundCommand::LayerFromBackgroundCommand()
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: Command(CommandId::LayerFromBackground(), CmdRecordableFlag)
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{
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}
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bool LayerFromBackgroundCommand::onEnabled(Context* context)
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{
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return context->checkFlags(ContextFlags::ActiveDocumentIsWritable |
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ContextFlags::HasActiveSprite |
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ContextFlags::HasActiveLayer |
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ContextFlags::ActiveLayerIsVisible |
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ContextFlags::ActiveLayerIsEditable |
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ContextFlags::ActiveLayerIsImage |
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ContextFlags::ActiveLayerIsBackground) &&
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// Isn't a reference layer
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!context->checkFlags(ContextFlags::ActiveLayerIsReference);
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}
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void LayerFromBackgroundCommand::onExecute(Context* context)
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{
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ContextWriter writer(context);
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Doc* document(writer.document());
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{
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Tx tx(writer, friendlyName());
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tx(new cmd::LayerFromBackground(writer.layer()));
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tx.commit();
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}
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#ifdef ENABLE_UI
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if (context->isUIAvailable())
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update_screen_for_document(document);
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#endif
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}
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Command* CommandFactory::createLayerFromBackgroundCommand()
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{
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return new LayerFromBackgroundCommand;
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}
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} // namespace app
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