forked from quickshell/quickshell
feat: add Variants type for creating instances
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parent
23837e5195
commit
d14258df8e
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@ -25,6 +25,7 @@ qt_standard_project_setup(REQUIRES 6.6)
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qt_add_executable(qtshell
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src/cpp/main.cpp
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src/cpp/shell.cpp
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src/cpp/variants.cpp
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)
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qt_add_qml_module(qtshell URI QtShell)
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94
src/cpp/variants.cpp
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94
src/cpp/variants.cpp
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@ -0,0 +1,94 @@
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#include "variants.hpp"
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#include <algorithm>
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#include <utility>
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#include <qcontainerfwd.h>
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#include <qlogging.h>
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void Variants::setVariants(QVariantList variants) {
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this->mVariants = std::move(variants);
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qDebug() << "configurations updated:" << this->mVariants;
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this->updateVariants();
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}
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void Variants::componentComplete() {
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qDebug() << "configure ready";
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this->updateVariants();
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}
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void Variants::updateVariants() {
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if (this->mComponent == nullptr) {
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qWarning() << "Variants instance does not have a component specified";
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return;
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}
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// clean up removed entries
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for (auto iter = this->instances.values.begin(); iter < this->instances.values.end();) {
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if (this->mVariants.contains(iter->first)) {
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iter++;
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} else {
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iter->second->deleteLater();
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iter = this->instances.values.erase(iter);
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}
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}
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for (auto iter = this->mVariants.begin(); iter < this->mVariants.end(); iter++) {
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auto& variantObj = *iter;
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if (!variantObj.canConvert<QVariantMap>()) {
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qWarning() << "value passed to Variants is not an object and will be ignored:" << variantObj;
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} else {
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auto variant = variantObj.value<QVariantMap>();
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for (auto iter2 = this->mVariants.begin(); iter2 < iter; iter2++) {
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if (*iter2 == variantObj) {
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qWarning() << "same value specified twice in Variants, duplicates will be ignored:"
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<< variantObj;
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goto outer;
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}
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}
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if (this->instances.contains(variant)) {
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continue; // we dont need to recreate this one
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}
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auto* instance = this->mComponent->createWithInitialProperties(variant, nullptr);
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if (instance == nullptr) {
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qWarning() << "failed to create variant with object" << variant;
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continue;
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}
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instance->setParent(this);
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this->instances.insert(variant, instance);
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}
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outer:;
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}
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}
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template <typename K, typename V>
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bool AwfulMap<K, V>::contains(const K& key) const {
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return std::ranges::any_of(this->values, [&](const QPair<K, V>& pair) {
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return pair.first == key;
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});
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}
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template <typename K, typename V>
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void AwfulMap<K, V>::insert(K key, V value) {
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this->values.push_back(QPair<K, V>(key, value));
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}
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template <typename K, typename V>
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bool AwfulMap<K, V>::remove(const K& key) {
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for (auto iter = this->values.begin(); iter < this->values.end(); iter++) {
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if (iter->first == key) {
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this->values.erase(iter);
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return true;
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}
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}
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return false;
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}
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40
src/cpp/variants.hpp
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40
src/cpp/variants.hpp
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#pragma once
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#include <qcontainerfwd.h>
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#include <qlist.h>
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#include <qmap.h>
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#include <qobject.h>
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#include <qqmlcomponent.h>
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#include <qqmlparserstatus.h>
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// extremely inefficient map
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template <typename K, typename V>
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class AwfulMap {
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public:
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[[nodiscard]] bool contains(const K& key) const;
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void insert(K key, V value); // assumes no duplicates
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bool remove(const K& key); // returns true if anything was removed
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QList<QPair<K, V>> values;
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};
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class Variants: public QObject, public QQmlParserStatus {
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Q_OBJECT;
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Q_PROPERTY(QQmlComponent* component MEMBER mComponent);
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Q_PROPERTY(QVariantList variants MEMBER mVariants WRITE setVariants);
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Q_CLASSINFO("DefaultProperty", "component");
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QML_ELEMENT;
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public:
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explicit Variants(QObject* parent = nullptr): QObject(parent) {}
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void classBegin() override {};
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void componentComplete() override;
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private:
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void setVariants(QVariantList variants);
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void updateVariants();
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QQmlComponent* mComponent = nullptr;
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QVariantList mVariants;
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AwfulMap<QVariantMap, QObject*> instances;
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};
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