/** 
 * @file llfloatermap.cpp
 * @brief The "mini-map" or radar in the upper right part of the screen.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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"

// self include
#include "llfloatermap.h"

// Library includes
#include "llfloaterreg.h"
#include "llfontgl.h"
#include "llglheaders.h"

// Viewer includes
#include "llagentcamera.h"
#include "llviewercontrol.h"
#include "llnetmap.h"
#include "lltracker.h"
#include "llviewercamera.h"
#include "lldraghandle.h"
#include "lltextbox.h"
#include "llfloaterworldmap.h"
#include "llagent.h"

//
// Constants
//

// The minor cardinal direction labels are hidden if their height is more
// than this proportion of the map.
// <FS:Ansariel> FIRE-32341: Make minor directions visible at reasonable mini map size again
//const F32 MAP_MINOR_DIR_THRESHOLD = 0.035f;
const F32 MAP_MINOR_DIR_THRESHOLD = 0.07f;

const S32 MAP_PADDING_LEFT = 0;
const S32 MAP_PADDING_TOP = 2;
const S32 MAP_PADDING_RIGHT = 2;
const S32 MAP_PADDING_BOTTOM = 0;
//
// Member functions
//

LLFloaterMap::LLFloaterMap(const LLSD& key) 
	: LLFloater(key),
	  mTextBoxEast(NULL),
	  mTextBoxNorth(NULL),
	  mTextBoxWest(NULL),
	  mTextBoxSouth(NULL),
	  mTextBoxSouthEast(NULL),
	  mTextBoxNorthEast(NULL),
	  mTextBoxNorthWest(NULL),
	  mTextBoxSouthWest(NULL),
	  mMap(NULL)
{
}

LLFloaterMap::~LLFloaterMap()
{
}

BOOL LLFloaterMap::postBuild()
{
    mMap = getChild<LLNetMap>("Net Map");
    mMap->setToolTipMsg(getString("ToolTipMsg"));
    mMap->setParcelNameMsg(getString("ParcelNameMsg"));
    mMap->setParcelSalePriceMsg(getString("ParcelSalePriceMsg"));
    mMap->setParcelSaleAreaMsg(getString("ParcelSaleAreaMsg"));
    mMap->setParcelOwnerMsg(getString("ParcelOwnerMsg"));
    mMap->setRegionNameMsg(getString("RegionNameMsg"));
    mMap->setToolTipHintMsg(getString("ToolTipHintMsg"));
    mMap->setAltToolTipHintMsg(getString("AltToolTipHintMsg"));
    sendChildToBack(mMap);

    mTextBoxNorth     = getChild<LLTextBox>("floater_map_north");
    mTextBoxEast      = getChild<LLTextBox>("floater_map_east");
    mTextBoxWest      = getChild<LLTextBox>("floater_map_west");
    mTextBoxSouth     = getChild<LLTextBox>("floater_map_south");
    mTextBoxSouthEast = getChild<LLTextBox>("floater_map_southeast");
    mTextBoxNorthEast = getChild<LLTextBox>("floater_map_northeast");
    mTextBoxSouthWest = getChild<LLTextBox>("floater_map_southwest");
    mTextBoxNorthWest = getChild<LLTextBox>("floater_map_northwest");

    mTextBoxNorth->reshapeToFitText();
    mTextBoxEast->reshapeToFitText();
    mTextBoxWest->reshapeToFitText();
    mTextBoxSouth->reshapeToFitText();
    mTextBoxSouthEast->reshapeToFitText();
    mTextBoxNorthEast->reshapeToFitText();
    mTextBoxSouthWest->reshapeToFitText();
    mTextBoxNorthWest->reshapeToFitText();


    // <FS:Ansariel> Remove titlebar
    stretchMiniMap(getRect().getWidth() - MAP_PADDING_LEFT - MAP_PADDING_RIGHT,
        getRect().getHeight() - MAP_PADDING_TOP - MAP_PADDING_BOTTOM);

    updateMinorDirections();

    // Get the drag handle all the way in back
    sendChildToBack(getDragHandle());

    // <FS:Ansariel> Remove titlebar
    setIsChrome(TRUE);
    getDragHandle()->setTitleVisible(TRUE);
    // </FS:Ansariel>

    // keep onscreen
    gFloaterView->adjustToFitScreen(this, false);

    return true;
}

BOOL LLFloaterMap::handleDoubleClick(S32 x, S32 y, MASK mask)
{
	// If floater is minimized, minimap should be shown on doubleclick (STORM-299)
	if (isMinimized())
	{
		setMinimized(FALSE);
		return TRUE;
	}

	LLVector3d pos_global = mMap->viewPosToGlobal(x, y);
	
	// <FS:Ansariel> Synchronize double click handling throughout instances
	//LLTracker::stopTracking(false);
	//LLFloaterWorldMap* world_map = LLFloaterWorldMap::getInstance();
	//if (world_map)
	//{
	//	world_map->trackLocation(pos_global);
	//}
	//
	//if (gSavedSettings.getBOOL("DoubleClickTeleport"))
	//{
	//	// If DoubleClickTeleport is on, double clicking the minimap will teleport there
	//	gAgent.teleportViaLocationLookAt(pos_global);
	//}
	//else if (gSavedSettings.getBOOL("DoubleClickShowWorldMap"))
	//{
	//	LLFloaterReg::showInstance("world_map");
	//}
	mMap->performDoubleClickAction(pos_global);
	// </FS:Ansariel> Synchronize double click handling throughout instances
    return TRUE;
}

void LLFloaterMap::setDirectionPos(LLTextBox *text_box, F32 rotation)
{
    // Rotation is in radians.
    // Rotation of 0 means x = 1, y = 0 on the unit circle.

    F32 map_half_height  = (F32) (getRect().getHeight() / 2) - (getHeaderHeight() / 2);
    F32 map_half_width   = (F32) (getRect().getWidth() / 2);
    F32 text_half_height = (F32) (text_box->getRect().getHeight() / 2);
    F32 text_half_width  = (F32) (text_box->getRect().getWidth() / 2);
    F32 extra_padding    = (F32) (mTextBoxNorth->getRect().getWidth() / 2);
    F32 pos_half_height  = map_half_height - text_half_height - extra_padding;
    F32 pos_half_width   = map_half_width - text_half_width - extra_padding;

    F32 corner_angle               = atan2(pos_half_height, pos_half_width);
    F32 rotation_mirrored_into_top = abs(fmodf(rotation, F_PI));
    if (rotation < 0)
    {
        rotation_mirrored_into_top = F_PI - rotation_mirrored_into_top;
    }
    F32  rotation_mirrored_into_top_right = (F_PI_BY_TWO - abs(rotation_mirrored_into_top - F_PI_BY_TWO));
    bool at_left_right_edge               = rotation_mirrored_into_top_right < corner_angle;

    F32 part_x = cos(rotation);
    F32 part_y = sin(rotation);
    F32 y;
    F32 x;
    if (at_left_right_edge)
    {
        x = std::copysign(pos_half_width, part_x);
        y = x * part_y / part_x;
    }
    else
    {
        y = std::copysign(pos_half_height, part_y);
        x = y * part_x / part_y;
    }

    text_box->setOrigin(ll_round(map_half_width + x - text_half_width), ll_round(map_half_height + y - text_half_height));
}

void LLFloaterMap::updateMinorDirections()
{
	if (mTextBoxNorthEast == NULL)
	{
		return;
	}

	// Hide minor directions if they cover too much of the map
	bool show_minors = mTextBoxNorthEast->getRect().getHeight() < MAP_MINOR_DIR_THRESHOLD *
		llmin(getRect().getWidth(), getRect().getHeight());

	mTextBoxNorthEast->setVisible(show_minors);
	mTextBoxNorthWest->setVisible(show_minors);
	mTextBoxSouthWest->setVisible(show_minors);
	mTextBoxSouthEast->setVisible(show_minors);
}

// virtual
void LLFloaterMap::draw()
{
	F32 rotation = 0;

	static LLUICachedControl<bool> rotate_map("MiniMapRotate", true);
	if( rotate_map )
	{
		// rotate subsequent draws to agent rotation
		rotation = atan2( LLViewerCamera::getInstance()->getAtAxis().mV[VX], LLViewerCamera::getInstance()->getAtAxis().mV[VY] );
	}

	setDirectionPos( mTextBoxEast,  rotation );
	setDirectionPos( mTextBoxNorth, rotation + F_PI_BY_TWO );
	setDirectionPos( mTextBoxWest,  rotation + F_PI );
	setDirectionPos( mTextBoxSouth, rotation + F_PI + F_PI_BY_TWO );

	setDirectionPos( mTextBoxNorthEast, rotation +						F_PI_BY_TWO / 2);
	setDirectionPos( mTextBoxNorthWest, rotation + F_PI_BY_TWO +		F_PI_BY_TWO / 2);
	setDirectionPos( mTextBoxSouthWest, rotation + F_PI +				F_PI_BY_TWO / 2);
	setDirectionPos( mTextBoxSouthEast, rotation + F_PI + F_PI_BY_TWO + F_PI_BY_TWO / 2);

	// Note: we can't just gAgent.check cameraMouselook() because the transition states are wrong.
	if(gAgentCamera.cameraMouselook())
	{
		setMouseOpaque(FALSE);
		getDragHandle()->setMouseOpaque(FALSE);
	}
	else
	{
		setMouseOpaque(TRUE);
		getDragHandle()->setMouseOpaque(TRUE);
	}
	
	LLFloater::draw();
}

void LLFloaterMap::reshape(S32 width, S32 height, BOOL called_from_parent)
{
	LLFloater::reshape(width, height, called_from_parent);
	
	// <FS:Ansariel> Remove titlebar
	stretchMiniMap(width - MAP_PADDING_LEFT - MAP_PADDING_RIGHT, height - MAP_PADDING_TOP - MAP_PADDING_BOTTOM);

	updateMinorDirections();
}

LLFloaterMap* LLFloaterMap::getInstance()
{
	return LLFloaterReg::getTypedInstance<LLFloaterMap>("mini_map");
}

// <FS:Ansariel> FIRE-1825: Minimap floater background transparency
// virtual
F32 LLFloaterMap::getCurrentTransparency()
{
	static LLCachedControl<F32> fsMiniMapOpacity(gSavedSettings, "FSMiniMapOpacity");
	return fsMiniMapOpacity();
}

// <FS:Ansariel> Remove titlebar
void LLFloaterMap::setMinimized(BOOL b)
{
	LLFloater::setMinimized(b);
	if (b)
	{
		setTitle(getString("mini_map_caption"));
	}
	else
	{
		setTitle("");
	}
}

void LLFloaterMap::stretchMiniMap(S32 width,S32 height)
{
	//fix for ext-7112
	//by default ctrl can't overlap caption area
	if(mMap)
	{
		LLRect map_rect;
		map_rect.setLeftTopAndSize( MAP_PADDING_LEFT, getRect().getHeight() - MAP_PADDING_TOP, width, height);
		mMap->reshape( width, height, 1);
		mMap->setRect(map_rect);
	}
}
// </FS:Ansariel>
