/**
 * @file llfloaterwindowsize.cpp
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, 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 "llfloaterwindowsize.h"

// Viewer includes
#include "llviewerwindow.h"

// Linden library includes
#include "llcombobox.h"
#include "llfloater.h"
#include "llfloaterreg.h"
#include "llregex.h"
#include "lluictrl.h"

// Extract from strings of the form "<width> x <height>", e.g. "640 x 480".
bool extractWindowSizeFromString(const std::string& instr, U32 *width, U32 *height)
{
    boost::cmatch what;
    // matches (any number)(any non-number)(any number)
    const boost::regex expression("([0-9]+)[^0-9]+([0-9]+)");
    if (ll_regex_match(instr.c_str(), what, expression))
    {
        *width = atoi(what[1].first);
        *height = atoi(what[2].first);
        return true;
    }

    *width = 0;
    *height = 0;
    return false;
}


LLFloaterWindowSize::LLFloaterWindowSize(const LLSD& key)
:   LLFloater(key)
{}

LLFloaterWindowSize::~LLFloaterWindowSize()
{}

bool LLFloaterWindowSize::postBuild()
{
    center();
    initWindowSizeControls();
    getChild<LLUICtrl>("set_btn")->setCommitCallback(
        boost::bind(&LLFloaterWindowSize::onClickSet, this));
    getChild<LLUICtrl>("cancel_btn")->setCommitCallback(
        boost::bind(&LLFloaterWindowSize::onClickCancel, this));
    setDefaultBtn("set_btn");
    return true;
}

void LLFloaterWindowSize::initWindowSizeControls()
{
    LLComboBox* ctrl_window_size = getChild<LLComboBox>("window_size_combo");

    // Look to see if current window size matches existing window sizes, if so then
    // just set the selection value...
    const U32 height = gViewerWindow->getWindowHeightRaw();
    const U32 width = gViewerWindow->getWindowWidthRaw();
    for (S32 i=0; i < ctrl_window_size->getItemCount(); i++)
    {
        U32 height_test = 0;
        U32 width_test = 0;
        ctrl_window_size->setCurrentByIndex(i);
        std::string resolution = ctrl_window_size->getValue().asString();
        if (extractWindowSizeFromString(resolution, &width_test, &height_test))
        {
            if ((height_test == height) && (width_test == width))
            {
                return;
            }
        }
    }
    // ...otherwise, add a new entry with the current window height/width.
    LLUIString resolution_label = getString("resolution_format");
    resolution_label.setArg("[RES_X]", llformat("%d", width));
    resolution_label.setArg("[RES_Y]", llformat("%d", height));
    ctrl_window_size->add(resolution_label, ADD_TOP);
    ctrl_window_size->setCurrentByIndex(0);
}

void LLFloaterWindowSize::onClickSet()
{
    LLComboBox* ctrl_window_size = getChild<LLComboBox>("window_size_combo");
    U32 width = 0;
    U32 height = 0;
    std::string resolution = ctrl_window_size->getValue().asString();
    if (extractWindowSizeFromString(resolution, &width, &height))
    {
        LLViewerWindow::movieSize(width, height);
    }
    closeFloater();
}

void LLFloaterWindowSize::onClickCancel()
{
    closeFloater();
}