/**
 * @file lltoolmorph.h
 * @brief A tool to select object faces.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

#ifndef LL_LLTOOLMORPH_H
#define LL_LLTOOLMORPH_H

#include "lltool.h"
#include "m4math.h"
#include "v2math.h"
#include "lldynamictexture.h"
#include "llundo.h"
#include "lltextbox.h"
#include "llstrider.h"
#include "llviewervisualparam.h"
#include "llframetimer.h"
#include "llviewertexture.h"

class LLViewerJointMesh;
class LLPolyMesh;
class LLViewerObject;
class LLJoint;

//-----------------------------------------------------------------------------
// LLVisualParamHint
//-----------------------------------------------------------------------------
class LLVisualParamHint : public LLViewerDynamicTexture
{
protected:
    virtual ~LLVisualParamHint();

public:
    LLVisualParamHint(
        S32 pos_x, S32 pos_y,
        S32 width, S32 height,
        LLViewerJointMesh *mesh,
        LLViewerVisualParam *param,
        LLWearable *wearable,
        F32 param_weight,
        LLJoint* jointp);

    /*virtual*/ S8 getType() const ;

    bool                    needsRender();
    void                    preRender(bool clear_depth);
    bool                    render();
    void                    requestUpdate( S32 delay_frames ) {mNeedsUpdate = true; mDelayFrames = delay_frames; }
    void                    setUpdateDelayFrames( S32 delay_frames ) { mDelayFrames = delay_frames; }
    void                    draw(F32 alpha);

    LLViewerVisualParam*    getVisualParam() { return mVisualParam; }
    F32                     getVisualParamWeight() { return mVisualParamWeight; }
    bool                    getVisible() { return mIsVisible; }

    void                    setAllowsUpdates( bool b ) { mAllowsUpdates = b; }

    const LLRect&           getRect()   { return mRect; }

    // Requests updates for all instances (excluding two possible exceptions)  Grungy but efficient.
    static void             requestHintUpdates( LLVisualParamHint* exception1 = NULL, LLVisualParamHint* exception2 = NULL );

protected:
    bool                    mNeedsUpdate;       // does this texture need to be re-rendered?
    bool                    mIsVisible;         // is this distortion hint visible?
    LLViewerJointMesh*      mJointMesh;         // mesh that this distortion applies to
    LLViewerVisualParam*    mVisualParam;       // visual param applied by this hint
    LLWearable*             mWearablePtr;       // wearable we're editing
    F32                     mVisualParamWeight;     // weight for this visual parameter
    bool                    mAllowsUpdates;     // updates are blocked unless this is true
    S32                     mDelayFrames;       // updates are blocked for this many frames
    LLRect                  mRect;
    F32                     mLastParamWeight;
    LLJoint*                mCamTargetJoint;    // joint to target with preview camera

    LLUIImagePtr mBackgroundp;

    typedef std::set< LLVisualParamHint* > instance_list_t;
    static instance_list_t sInstances;
};

// this class resets avatar data at the end of an update cycle
class LLVisualParamReset : public LLViewerDynamicTexture
{
protected:
    /*virtual */ ~LLVisualParamReset(){}
public:
    LLVisualParamReset();
    /*virtual */ bool render();
    /*virtual*/ S8 getType() const ;

    static bool sDirty;
};

#endif