Files
slide/src/imageswitcher.cpp
Alfred Reynolds 8ac20f4b43 - Add support for loading configuration via a file rather than the command line
- Added "-c" command line option to look for config file "slide.options.json" in. Otherwise looks in ~/.config/slide/slide.options.json or /etc/slide/slide.options.json
- Added code to reload config options at runtime (when the image is scheduled to update)
2021-08-10 18:20:33 +12:00

65 lines
1.6 KiB
C++

#include "imageswitcher.h"
#include "imageselector.h"
#include "mainwindow.h"
#include <QDirIterator>
#include <QTimer>
#include <QApplication>
#include <iostream>
#include <memory>
#include <stdlib.h> /* srand, rand */
#include <time.h> /* time */
ImageSwitcher::ImageSwitcher(MainWindow& w, unsigned int timeoutMsec, std::shared_ptr<ImageSelector>& selector):
QObject::QObject(),
window(w),
timeout(timeoutMsec),
selector(selector),
timer(this),
timerNoContent(this)
{
}
void ImageSwitcher::updateImage()
{
if(reloadConfigIfNeeded)
{
reloadConfigIfNeeded();
}
ImageDetails imageDetails = selector->getNextImage(window.getBaseOptions());
if (imageDetails.filename == "")
{
window.warn("No image found.");
timerNoContent.start(timeoutNoContent);
}
else
{
window.setImage(imageDetails);
timerNoContent.stop(); // we have loaded content so stop the fast polling
}
}
void ImageSwitcher::start()
{
updateImage();
connect(&timer, SIGNAL(timeout()), this, SLOT(updateImage()));
connect(&timerNoContent, SIGNAL(timeout()), this, SLOT(updateImage()));
timer.start(timeout);
}
void ImageSwitcher::scheduleImageUpdate()
{
// update our image in 100msec, to let the system settle
QTimer::singleShot(100, this, SLOT(updateImage()));
}
void ImageSwitcher::setConfigFileReloader(std::function<void()> reloadConfigIfNeededIn)
{
reloadConfigIfNeeded = reloadConfigIfNeededIn;
}
void ImageSwitcher::setRotationTime(unsigned int timeoutMsecIn)
{
timeout = timeoutMsecIn;
timer.start(timeout);
}