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#include <sys/types.h>
#include <dirent.h>
#include <gtk/gtk.h>
#include <algorithm>
#include <string>
#include <vector>
#include "rgslideshow.h"
using namespace std;
RGSlideShow::RGSlideShow(GtkImage * image, string imgPath)
: _image(image), _totalSteps(0), _currentStep(0)
{
DIR *dir = opendir(imgPath.c_str());
struct dirent *entry;
imgPath += '/';
if (dir != NULL) {
for (entry = readdir(dir); entry != NULL; entry = readdir(dir)) {
if (entry->d_name[0] != '.')
_imageFileList.push_back(imgPath + entry->d_name);
}
}
sort(_imageFileList.begin(), _imageFileList.end());
}
void RGSlideShow::step()
{
_currentStep += 1;
refresh();
}
void RGSlideShow::refresh()
{
if (!_imageFileList.empty()) {
int current = 0;
if (_totalSteps) {
float stepping = (_totalSteps / (float)_imageFileList.size());
current = (int)((_currentStep + (stepping - 1) / 2) / stepping);
if (current >= _imageFileList.size())
current = _imageFileList.size() - 1;
}
gtk_image_set_from_file(_image, _imageFileList[current].c_str());
}
}
// vim:sts=3:sw=3
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