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cardinal/include/helpers.hpp

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3.6 KiB
C++

/*
* DISTRHO Cardinal Plugin
* Copyright (C) 2021 Filipe Coelho <falktx@falktx.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of
* the License, or any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* For a full copy of the GNU General Public License see the LICENSE file.
*/
/**
* This file is an edited version of VCVRack's helpers.hpp
* Copyright (C) 2016-2021 VCV.
*
* This program is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 3 of
* the License, or (at your option) any later version.
*/
#pragma once
#include <app/ModuleWidget.hpp>
#include <engine/Module.hpp>
#include <unordered_map>
#include "DistrhoUtils.hpp"
namespace rack {
struct CardinalPluginModelHelper : plugin::Model {
virtual app::ModuleWidget* createModuleWidgetFromEngineLoad(engine::Module* m) = 0;
virtual void removeCachedModuleWidget(engine::Module* m) = 0;
};
template <class TModule, class TModuleWidget>
struct CardinalPluginModel : CardinalPluginModelHelper
{
std::unordered_map<engine::Module*, TModuleWidget*> widgets;
std::unordered_map<engine::Module*, bool> widgetNeedsDeletion;
engine::Module* createModule() override
{
engine::Module* const m = new TModule;
m->model = this;
return m;
}
app::ModuleWidget* createModuleWidget(engine::Module* const m) override
{
TModule* tm = nullptr;
if (m)
{
DISTRHO_SAFE_ASSERT_RETURN(m->model == this, nullptr);
if (widgets.find(m) != widgets.end())
{
widgetNeedsDeletion[m] = false;
return widgets[m];
}
tm = dynamic_cast<TModule*>(m);
}
app::ModuleWidget* const tmw = new TModuleWidget(tm);
DISTRHO_SAFE_ASSERT_RETURN(tmw->module == m, nullptr);
tmw->setModel(this);
return tmw;
}
app::ModuleWidget* createModuleWidgetFromEngineLoad(engine::Module* const m) override
{
DISTRHO_SAFE_ASSERT_RETURN(m != nullptr, nullptr);
DISTRHO_SAFE_ASSERT_RETURN(m->model == this, nullptr);
TModule* const tm = dynamic_cast<TModule*>(m);
DISTRHO_SAFE_ASSERT_RETURN(tm != nullptr, nullptr);
TModuleWidget* const tmw = new TModuleWidget(tm);
DISTRHO_SAFE_ASSERT_RETURN(tmw->module == m, nullptr);
tmw->setModel(this);
widgets[m] = tmw;
widgetNeedsDeletion[m] = true;
return tmw;
}
void removeCachedModuleWidget(engine::Module* const m) override
{
DISTRHO_SAFE_ASSERT_RETURN(m != nullptr,);
DISTRHO_SAFE_ASSERT_RETURN(m->model == this,);
if (widgets.find(m) == widgets.end())
return;
if (widgetNeedsDeletion[m])
delete widgets[m];
widgets.erase(m);
widgetNeedsDeletion.erase(m);
}
};
template <class TModule, class TModuleWidget>
CardinalPluginModel<TModule, TModuleWidget>* createModel(std::string slug)
{
CardinalPluginModel<TModule, TModuleWidget>* const o = new CardinalPluginModel<TModule, TModuleWidget>();
o->slug = slug;
return o;
}
}
#define createModel createModelOldVCV
#include_next "helpers.hpp"
#undef createModel