cxPresetWidget.cpp

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/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.
                 
Copyright (c) SINTEF Department of Medical Technology.
All rights reserved.
                 
CustusX is released under a BSD 3-Clause license.
                 
See Lisence.txt (https://github.com/SINTEFMedtek/CustusX/blob/master/License.txt) for details.
=========================================================================*/

#include "cxPresetWidget.h"

#include <QComboBox>
#include <QInputDialog>
#include "cxLogger.h"
#include "cxSettings.h"

namespace cx {

PresetWidget::PresetWidget(QWidget* parent) :
        BaseWidget(parent, "PresetWidget", "Presets"), mLayout(new QVBoxLayout(this))
{
        this->setToolTip("Select a predefined set of options");
        mPresetsComboBox = new QComboBox(this);
        mPresetsComboBox->setToolTip("Select a preset to use");
        connect(mPresetsComboBox, SIGNAL(currentIndexChanged(const QString&)), this,
                        SLOT(presetsBoxChangedSlot(const QString&)));

        mActionGroup = new QActionGroup(this);

        this->createAction(mActionGroup,
                        QIcon(":/icons/preset_reset.png"),
                        "Reset all transfer function values to the defaults", "",
                        SLOT(resetSlot()));

        this->createAction(mActionGroup,
                        QIcon(":/icons/preset_remove.png"),
                                        "Delete the current preset", "",
                        SLOT(deleteSlot()));

        this->createAction(mActionGroup,
                            QIcon(":/icons/preset_save.png"),
                                        "Add the current setting as a preset", "",
                        SLOT(saveSlot()));

        mLayout->addWidget(mPresetsComboBox);

        mButtonLayout = NULL;
        this->populateButtonLayout();

        this->setLayout(mLayout);
}

bool PresetWidget::requestSetCurrentPreset(QString name)
{
        if(mPresetsComboBox->findText(name) == -1)
                return false;

        mPresetsComboBox->setCurrentIndex(mPresetsComboBox->findText(name));
        return true;
}

QString PresetWidget::getCurrentPreset()
{
        return mPresetsComboBox->currentText();
}

void PresetWidget::showDetailed(bool detailed)
{
        if(!mButtonLayout)
                return;

        for(int i=0; i < mButtonLayout->count(); ++i)
        {
                QWidget* widget = mButtonLayout->itemAt(i)->widget();
                if(!widget)
                        continue;
                if(detailed)
                        widget->show();
                else
                        widget->hide();
        }
}

void PresetWidget::setPresets(PresetsPtr presets)
{
        if(!presets)
        {
                reportError("Trying to set presets to null...");
                return;
        }
        //TODO disconnect old stuff

        mPresets = presets;
        connect(mPresets.get(), SIGNAL(changed()), this, SLOT(populatePresetListSlot()));

        this->populatePresetListSlot();
    this->selectLastUsedPreset();
}

QString PresetWidget::getLastUsedPresetNameFromSettingsFile() const
{
    QString id = mPresets->getId();
    settings()->fillDefault(id, mPresets->getPresetList().first());

    QString lastUsedPresetName = settings()->value(id).toString();
    return lastUsedPresetName;
}

void PresetWidget::resetSlot()
{
        mPresetsComboBox->setCurrentIndex(0);
}

void PresetWidget::saveSlot()
{
        mPresets->save();
        this->populatePresetListSlot();
}

void PresetWidget::deleteSlot()
{
        mPresets->remove();
        this->populatePresetListSlot();
}

void PresetWidget::populatePresetListSlot()
{
        this->populatePresetList(mPresets->getPresetList(""));
}

void PresetWidget::presetsBoxChangedSlot(const QString& name)
{
    settings()->setValue(mPresets->getId(), name);
        emit presetSelected(name);
}

void PresetWidget::populateButtonLayout()
{
        //delete old stuff
        if(mButtonLayout)
        {
                QLayoutItem *child;
                while ((child = mButtonLayout->takeAt(0)) != 0)
                {
                        // delete both the layoutitem AND the widget. Not auto done because layoutitem is no QObject.
                        QWidget* widget = child->widget();
                        delete child;
                        delete widget;
                }
                delete mButtonLayout;
        }

        //make the new buttons
        mButtonLayout = new QHBoxLayout;
        mLayout->addLayout(mButtonLayout);

        QList<QAction*> actions = mActionGroup->actions();
        for (int i=0; i<actions.size(); ++i)
        {
                QToolButton* button = new QToolButton(this);
                button->setDefaultAction(actions[i]);
                button->show();
                mButtonLayout->addWidget(button);
        }
        mButtonLayout->addStretch();
}

void PresetWidget::populatePresetList(QStringList list)
{
        mPresetsComboBox->blockSignals(true);
        mPresetsComboBox->clear();

        mPresetsComboBox->addItem("<Default preset>");

        mPresetsComboBox->addItems(list);

        mPresetsComboBox->blockSignals(false);
}

QString PresetWidget::getNewPresetName(bool withoutSpaces = false)
{
        QString retval;

        // generate a name suggestion: identical if custom, appended by index if default.
        QString newName = PresetWidget::getCurrentPreset();
        if (!mPresets->getPresetList("").contains(newName))
                newName = "custom preset";
        if (mPresets->isDefaultPreset(newName))
                newName += "(2)";

        bool ok;
        QString text = QInputDialog::getText(this, "Save Preset",
                        "Custom Preset Name", QLineEdit::Normal, newName, &ok);
        if (!ok || text.isEmpty())
                text = newName;

        retval = text;
        if(withoutSpaces)
                retval = retval.replace(" ", "-");

    return retval;
}

void PresetWidget::selectLastUsedPreset()
{
    QString lastUsedPreset = this->getLastUsedPresetNameFromSettingsFile();
    this->requestSetCurrentPreset(lastUsedPreset);
}


} /* namespace cx */