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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
Audacity: A Digital Audio Editor
ProjectSnap.cpp
Dmitry Vedenko
**********************************************************************/
#include "ProjectSnap.h"
#include "Project.h"
#include "XMLWriter.h"
#include "XMLAttributeValueView.h"
#include "ProjectRate.h"
#include "ProjectTimeSignature.h"
static const AudacityProject::AttachedObjects::RegisteredFactory sKey {
[](AudacityProject& project)
{
auto result = std::make_shared<ProjectSnap>(project);
return result;
}
};
ProjectSnap& ProjectSnap::Get(AudacityProject& project)
{
return project.AttachedObjects::Get<ProjectSnap>(sKey);
}
const ProjectSnap& ProjectSnap::Get(const AudacityProject& project)
{
return Get(const_cast<AudacityProject&>(project));
}
ProjectSnap::ProjectSnap(const AudacityProject& project)
: mProject(project)
{}
void ProjectSnap::SetSnapMode(SnapMode mode)
{
if (mSnapMode != mode)
{
mSnapMode = mode;
SnapModeSetting.WriteEnum(mSnapMode);
gPrefs->Flush();
Publish(SnapChangedMessage { mode, mSnapTo });
}
}
SnapMode ProjectSnap::GetSnapMode() const
{
return mSnapMode;
}
void ProjectSnap::SetSnapTo(Identifier snap)
{
if (mSnapTo != snap)
{
mSnapTo = snap;
SnapToSetting.Write(mSnapTo.GET());
gPrefs->Flush();
Publish(SnapChangedMessage { mSnapMode, snap });
}
}
Identifier ProjectSnap::GetSnapTo() const
{
return mSnapTo;
}
SnapResult ProjectSnap::SnapTime(double time) const
{
if (mSnapMode == SnapMode::SNAP_OFF)
return { time, false };
return SnapFunctionsRegistry::Snap(mSnapTo, mProject, time, mSnapMode == SnapMode::SNAP_NEAREST);
}
SnapResult ProjectSnap::SingleStep(double time, bool upwards) const
{
if (mSnapMode == SnapMode::SNAP_OFF)
return { time, false };
return SnapFunctionsRegistry::SingleStep(mSnapTo, mProject, time, upwards);
}
static ProjectFileIORegistry::AttributeWriterEntry entry {
[](const AudacityProject& project, XMLWriter& xmlFile)
{
// Keep this attr for compatibility
auto& snapSettings = ProjectSnap::Get(project);
xmlFile.WriteAttr(
wxT("snapto"), snapSettings.GetSnapMode() != SnapMode::SNAP_OFF ?
wxT("on") :
wxT("off"));
}
};
static ProjectFileIORegistry::AttributeReaderEntries entries {
// Just a pointer to function, but needing overload resolution as non-const:
(ProjectSnap & (*)(AudacityProject&)) & ProjectSnap::Get,
{
// PRL: The following has persisted as a per-project setting for long.
// Maybe that should be abandoned. Enough to save changes in the user
// preference file.
// DV: Keep the old behavior here: project only stored *off* and *nearest*
{ "snapto",
[](auto& snapSettings, auto value)
{
snapSettings.SetSnapMode(
value.ToWString() == wxT("on") ? SnapMode::SNAP_NEAREST :
SnapMode::SNAP_OFF);
} },
}
};
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