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/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee 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.
*
* RawTherapee 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.
*
* You should have received a copy of the GNU General Public License
* along with RawTherapee. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <list>
#include <memory>
#include <gtkmm.h>
#include "guiutils.h"
#include "threadutils.h"
#include "rtengine/noncopyable.h"
#include "rtengine/rtengine.h"
class PreviewListener
{
public:
virtual ~PreviewListener() = default;
virtual void previewImageChanged() = 0;
};
class PreviewHandler;
struct PreviewHandlerIdleHelper {
PreviewHandler* phandler;
bool destroyed;
int pending;
};
class PreviewHandler final : public rtengine::PreviewImageListener, public rtengine::NonCopyable
{
private:
friend int setImageUI (void* data);
friend int delImageUI (void* data);
friend int imageReadyUI (void* data);
IdleRegister idle_register;
protected:
rtengine::IImage8* image;
const std::unique_ptr<rtengine::procparams::CropParams> cropParams;
double previewScale;
PreviewHandlerIdleHelper* pih;
std::list<PreviewListener*> listeners;
MyMutex previewImgMutex;
Glib::RefPtr<Gdk::Pixbuf> previewImg;
public:
PreviewHandler ();
~PreviewHandler () override;
void addPreviewImageListener (PreviewListener* l)
{
listeners.push_back (l);
}
// previewimagelistener
void setImage(rtengine::IImage8* img, double scale, const rtengine::procparams::CropParams& cp) override;
void delImage(rtengine::IImage8* img) override;
void imageReady(const rtengine::procparams::CropParams& cp) override;
// this function is called when a new preview image arrives from rtengine
void previewImageChanged ();
// with this function it is possible to ask for a rough approximation of a (possibly zoomed) crop of the image
Glib::RefPtr<Gdk::Pixbuf> getRoughImage (int x, int y, int w, int h, double zoom);
Glib::RefPtr<Gdk::Pixbuf> getRoughImage (int desiredW, int desiredH, double& zoom);
rtengine::procparams::CropParams getCropParams ();
};
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