loadingdialog.cpp

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// Copyright (c) 2019-2020 The PIVX Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include "loadingdialog.h"
#include "ui_loadingdialog.h"
 
#include <QMovie>
 
void Worker::process(){
    if (runnable) {
        try {
            runnable->run(type);
        } catch (std::exception &e) {
            QString errorStr = QString::fromStdString(e.what());
            runnable->onError(errorStr, type);
            Q_EMIT error(errorStr, type);
        } catch (...) {
            QString errorStr = QString::fromStdString("Unknown error running background task");
            runnable->onError(errorStr, type);
            Q_EMIT error(errorStr, type);
        }
    } else {
        Q_EMIT error("Null runnable", type);
    }
    Q_EMIT finished();
};
 
LoadingDialog::LoadingDialog(QWidget *parent, QString loadingMsg) :
    QDialog(parent),
    ui(new Ui::LoadingDialog)
{
    ui->setupUi(this);
 
    this->setStyleSheet(parent->styleSheet());
 
    ui->frame->setProperty("cssClass", "container-loading");
 
    QMovie *movie = new QMovie("://ani-loading-dark");
    ui->labelMovie->setText("");
    ui->labelMovie->setMovie(movie);
    movie->start();
 
    ui->labelMessage->setProperty("cssClass", "text-loading");
    ui->labelDots->setProperty("cssClass", "text-loading");
 
    if (!loadingMsg.isEmpty()) {
        ui->labelMessage->setText(loadingMsg);
    }
}
 
void LoadingDialog::execute(Runnable *runnable, int type, std::unique_ptr<WalletModel::UnlockContext> pctx)
{
    loadingTimer = new QTimer(this);
    connect(loadingTimer, &QTimer::timeout, this, &LoadingDialog::loadingTextChange);
    loadingTimer->start(250);
 
    QThread* thread = new QThread;
    Worker* worker = (pctx == nullptr ?
                      new Worker(runnable, type) :
                      new WalletWorker(runnable, type, std::move(pctx)));
    worker->moveToThread(thread);
    connect(thread, &QThread::started, worker, &Worker::process);
    connect(worker, &Worker::finished, thread, &QThread::quit);
    connect(worker, &Worker::finished, worker, &Worker::deleteLater);
    connect(thread, &QThread::finished, thread, &QThread::deleteLater);
    connect(worker, &Worker::finished, this, &LoadingDialog::finished);
    thread->start();
}
 
void LoadingDialog::loadingTextChange(){
    if (loading == 4) {
        loading = 0;
    } else {
        loading++;
    }
    switch (loading) {
        case 1:
            ui->labelDots->setText("");
            break;
        case 2:
            ui->labelDots->setText(".");
            break;
        case 3:
            ui->labelDots->setText("..");
            break;
        case 4:
            ui->labelDots->setText("...");
            break;
    }
}
 
void LoadingDialog::finished(){
    loadingTimer->stop();
    accept();
    deleteLater();
}
 
LoadingDialog::~LoadingDialog()
{
    delete ui;
}