/**
 * @file llpanelsnapshotlocal.cpp
 * @brief The panel provides UI for saving snapshot to a local folder.
 *
 * $LicenseInfo:firstyear=2011&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2011, Linden Research, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "llcombobox.h"
#include "llsidetraypanelcontainer.h"
#include "llsliderctrl.h"
#include "llspinctrl.h"

#include "llfloatersnapshot.h" // FIXME: replace with a snapshot storage model
#include "llpanelsnapshot.h"
#include "llsnapshotlivepreview.h"
#include "llviewercontrol.h" // gSavedSettings
#include "llviewerwindow.h"

/**
 * The panel provides UI for saving snapshot to a local folder.
 */
class LLPanelSnapshotLocal
:   public LLPanelSnapshot
{
    LOG_CLASS(LLPanelSnapshotLocal);

public:
    LLPanelSnapshotLocal();
    /*virtual*/ bool postBuild();
    /*virtual*/ void onOpen(const LLSD& key);

private:
    /*virtual*/ std::string getWidthSpinnerName() const     { return "local_snapshot_width"; }
    /*virtual*/ std::string getHeightSpinnerName() const    { return "local_snapshot_height"; }
    /*virtual*/ std::string getAspectRatioCBName() const    { return "local_keep_aspect_check"; }
    /*virtual*/ std::string getImageSizeComboName() const   { return "local_size_combo"; }
    /*virtual*/ std::string getImageSizePanelName() const   { return "local_image_size_lp"; }
    /*virtual*/ LLSnapshotModel::ESnapshotFormat getImageFormat() const;
    /*virtual*/ LLSnapshotModel::ESnapshotType getSnapshotType();
    /*virtual*/ void updateControls(const LLSD& info);

    S32 mLocalFormat;

    void onFormatComboCommit(LLUICtrl* ctrl);
    void onQualitySliderCommit(LLUICtrl* ctrl);
    void onSaveFlyoutCommit(LLUICtrl* ctrl);

    void onLocalSaved();
    void onLocalCanceled();
};

static LLPanelInjector<LLPanelSnapshotLocal> panel_class("llpanelsnapshotlocal");

LLPanelSnapshotLocal::LLPanelSnapshotLocal()
{
    mLocalFormat = gSavedSettings.getS32("SnapshotFormat");
    mCommitCallbackRegistrar.add("Local.Cancel",   { boost::bind(&LLPanelSnapshotLocal::cancel, this) });
}

// virtual
bool LLPanelSnapshotLocal::postBuild()
{
    getChild<LLUICtrl>("image_quality_slider")->setCommitCallback(boost::bind(&LLPanelSnapshotLocal::onQualitySliderCommit, this, _1));
    getChild<LLUICtrl>("local_format_combo")->setCommitCallback(boost::bind(&LLPanelSnapshotLocal::onFormatComboCommit, this, _1));
    getChild<LLUICtrl>("save_btn")->setCommitCallback(boost::bind(&LLPanelSnapshotLocal::onSaveFlyoutCommit, this, _1));

    return LLPanelSnapshot::postBuild();
}

// virtual
void LLPanelSnapshotLocal::onOpen(const LLSD& key)
{
    if(gSavedSettings.getS32("SnapshotFormat") != mLocalFormat)
    {
        getChild<LLComboBox>("local_format_combo")->selectNthItem(mLocalFormat);
    }
    LLPanelSnapshot::onOpen(key);
}

// virtual
LLSnapshotModel::ESnapshotFormat LLPanelSnapshotLocal::getImageFormat() const
{
    LLSnapshotModel::ESnapshotFormat fmt = LLSnapshotModel::SNAPSHOT_FORMAT_PNG;

    LLComboBox* local_format_combo = getChild<LLComboBox>("local_format_combo");
    const std::string id  = local_format_combo->getValue().asString();
    if (id == "PNG")
    {
        fmt = LLSnapshotModel::SNAPSHOT_FORMAT_PNG;
    }
    else if (id == "JPEG")
    {
        fmt = LLSnapshotModel::SNAPSHOT_FORMAT_JPEG;
    }
    else if (id == "BMP")
    {
        fmt = LLSnapshotModel::SNAPSHOT_FORMAT_BMP;
    }

    return fmt;
}

// virtual
void LLPanelSnapshotLocal::updateControls(const LLSD& info)
{
    LLSnapshotModel::ESnapshotFormat fmt =
        (LLSnapshotModel::ESnapshotFormat) gSavedSettings.getS32("SnapshotFormat");
    getChild<LLComboBox>("local_format_combo")->selectNthItem((S32) fmt);

    const bool show_quality_ctrls = (fmt == LLSnapshotModel::SNAPSHOT_FORMAT_JPEG);
    getChild<LLUICtrl>("image_quality_slider")->setVisible(show_quality_ctrls);
    getChild<LLUICtrl>("image_quality_level")->setVisible(show_quality_ctrls);

    getChild<LLUICtrl>("image_quality_slider")->setValue(gSavedSettings.getS32("SnapshotQuality"));
    updateImageQualityLevel();

    const bool have_snapshot = info.has("have-snapshot") ? info["have-snapshot"].asBoolean() : true;
    getChild<LLUICtrl>("save_btn")->setEnabled(have_snapshot);
}

void LLPanelSnapshotLocal::onFormatComboCommit(LLUICtrl* ctrl)
{
    mLocalFormat = getImageFormat();
    // will call updateControls()
    LLFloaterSnapshot::getInstance()->notify(LLSD().with("image-format-change", true));
}

void LLPanelSnapshotLocal::onQualitySliderCommit(LLUICtrl* ctrl)
{
    updateImageQualityLevel();

    LLSliderCtrl* slider = (LLSliderCtrl*)ctrl;
    S32 quality_val = llfloor((F32)slider->getValue().asReal());
    LLSD info;
    info["image-quality-change"] = quality_val;
    LLFloaterSnapshot::getInstance()->notify(info);
}

void LLPanelSnapshotLocal::onSaveFlyoutCommit(LLUICtrl* ctrl)
{
    if (ctrl->getValue().asString() == "save as")
    {
        gViewerWindow->resetSnapshotLoc();
    }

    LLFloaterSnapshot* floater = LLFloaterSnapshot::getInstance();

    floater->notify(LLSD().with("set-working", true));
    floater->saveLocal((boost::bind(&LLPanelSnapshotLocal::onLocalSaved, this)), (boost::bind(&LLPanelSnapshotLocal::onLocalCanceled, this)));
}

void LLPanelSnapshotLocal::onLocalSaved()
{
    mSnapshotFloater->postSave();
    LLFloaterSnapshot::getInstance()->notify(LLSD().with("set-finished", LLSD().with("ok", true).with("msg", "local")));
}

void LLPanelSnapshotLocal::onLocalCanceled()
{
    cancel();
    LLFloaterSnapshot::getInstance()->notify(LLSD().with("set-finished", LLSD().with("ok", false).with("msg", "local")));
}


LLSnapshotModel::ESnapshotType LLPanelSnapshotLocal::getSnapshotType()
{
    return LLSnapshotModel::SNAPSHOT_LOCAL;
}