progress_monitor.h

// Copyright (c) 2009-2025 Avanquest Software. All rights reserved.
 
#ifndef PDFSDK_CXX_PROGRESS_MONITOR_H_INCLUDED_
#define PDFSDK_CXX_PROGRESS_MONITOR_H_INCLUDED_
 
#include <pdfsdk/cxx/callback.h>
#include <pdfsdk/progress_monitor.h>
 
namespace PDF {

class ProgressMonitor {
protected:
    ProgressMonitor() = default;
 
public:
    virtual ~ProgressMonitor() = default;
 
#ifndef SWIG
    const PDProgressMonitor* monitor() const { return &m_monitor; }
    void* userdata() { return this; }
#endif

    virtual void BeginOperation(double /*start*/, double /*end*/) { /* intentionally empty */ }

    virtual void EndOperation() {}

    virtual void SetCurrentValue(double /*value*/) { /* intentionally empty */ }

    virtual bool IsCanceled() const { return false; }
 
private:
    static PDErrCode PDFSDK_CALLCONV BeginOp(void* clientData, double progressMin, double progressMax) {
        PDFSDK_CALLBACK_BEGIN
            ProgressMonitor* monitor = static_cast<ProgressMonitor*>(clientData);
            monitor->BeginOperation(progressMin, progressMax);
            return kPDErrSuccess;
        PDFSDK_CALLBACK_END
    }
 
    static PDErrCode PDFSDK_CALLCONV EndOp(void* clientData) {
        PDFSDK_CALLBACK_BEGIN
            ProgressMonitor* monitor = static_cast<ProgressMonitor*>(clientData);
            monitor->EndOperation();
            return kPDErrSuccess;
        PDFSDK_CALLBACK_END
    }
 
    static PDErrCode PDFSDK_CALLCONV SetValue(void* clientData, double value) {
        PDFSDK_CALLBACK_BEGIN
            ProgressMonitor* monitor = static_cast<ProgressMonitor*>(clientData);
            monitor->SetCurrentValue(value);
            return kPDErrSuccess;
        PDFSDK_CALLBACK_END
    }
 
    static PDErrCode PDFSDK_CALLCONV IsCanceled(void* clientData, bool* pCanceled) {
        PDFSDK_CALLBACK_BEGIN
            ProgressMonitor* monitor = static_cast<ProgressMonitor*>(clientData);
            *pCanceled = monitor->IsCanceled();
            return kPDErrSuccess;
        PDFSDK_CALLBACK_END
    }
 
private:
    PDProgressMonitor m_monitor = {
            &ProgressMonitor::BeginOp,
            &ProgressMonitor::EndOp,
            &ProgressMonitor::SetValue,
            &ProgressMonitor::IsCanceled,
    };
};
 
}  // namespace PDF
 
#endif  // PDFSDK_CXX_PROGRESS_MONITOR_H_INCLUDED_