path: root/indra/newview/llscrollingpanelparam.cpp

/**
 * @file llscrollingpanelparam.cpp
 * @brief UI panel for a list of visual param panels
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * 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 "llscrollingpanelparam.h"
#include "llviewerjointmesh.h"
#include "llviewervisualparam.h"
#include "llwearable.h"
#include "llviewervisualparam.h"
#include "lltoolmorph.h"
#include "lltrans.h"
#include "llbutton.h"
#include "llsliderctrl.h"
#include "llagent.h"
#include "llviewborder.h"
#include "llvoavatarself.h"

// Constants for LLPanelVisualParam
const F32 LLScrollingPanelParam::PARAM_STEP_TIME_THRESHOLD = 0.25f;

const S32 LLScrollingPanelParam::PARAM_HINT_WIDTH = 128;
const S32 LLScrollingPanelParam::PARAM_HINT_HEIGHT = 128;

// LLScrollingPanelParam
//static
S32 LLScrollingPanelParam::sUpdateDelayFrames = 0;

LLScrollingPanelParam::LLScrollingPanelParam( const LLPanel::Params& panel_params,
                          LLViewerJointMesh* mesh, LLViewerVisualParam* param, BOOL allow_modify, LLWearable* wearable, LLJoint* jointp, BOOL use_hints )
    : LLScrollingPanelParamBase( panel_params, mesh, param, allow_modify, wearable, jointp, use_hints)
{
    // *HACK To avoid hard coding texture position, lets use border's position for texture.
    LLViewBorder* left_border = getChild<LLViewBorder>("left_border");

    static LLUICachedControl<S32> slider_ctrl_height ("UISliderctrlHeight", 0);
    S32 pos_x = left_border->getRect().mLeft + left_border->getBorderWidth();
    S32 pos_y = left_border->getRect().mBottom + left_border->getBorderWidth();
    F32 min_weight = param->getMinWeight();
    F32 max_weight = param->getMaxWeight();

    mHintMin = new LLVisualParamHint( pos_x, pos_y, PARAM_HINT_WIDTH, PARAM_HINT_HEIGHT, mesh, (LLViewerVisualParam*) wearable->getVisualParam(param->getID()), wearable,  min_weight, jointp);
    pos_x = getChild<LLViewBorder>("right_border")->getRect().mLeft + left_border->getBorderWidth();
    mHintMax = new LLVisualParamHint( pos_x, pos_y, PARAM_HINT_WIDTH, PARAM_HINT_HEIGHT, mesh, (LLViewerVisualParam*) wearable->getVisualParam(param->getID()), wearable, max_weight, jointp );

    mHintMin->setAllowsUpdates( FALSE );
    mHintMax->setAllowsUpdates( FALSE );

    std::string min_name = LLTrans::getString(param->getMinDisplayName());
    std::string max_name = LLTrans::getString(param->getMaxDisplayName());
    getChild<LLUICtrl>("min param text")->setValue(min_name);
    getChild<LLUICtrl>("max param text")->setValue(max_name);

    LLButton* less = getChild<LLButton>("less");
    if (less)
    {
        less->setMouseDownCallback( LLScrollingPanelParam::onHintMinMouseDown, this );
        less->setMouseUpCallback( LLScrollingPanelParam::onHintMinMouseUp, this );
        less->setHeldDownCallback( LLScrollingPanelParam::onHintMinHeldDown, this );
        less->setHeldDownDelay( PARAM_STEP_TIME_THRESHOLD );
    }

    LLButton* more = getChild<LLButton>("more");
    if (more)
    {
        more->setMouseDownCallback( LLScrollingPanelParam::onHintMaxMouseDown, this );
        more->setMouseUpCallback( LLScrollingPanelParam::onHintMaxMouseUp, this );
        more->setHeldDownCallback( LLScrollingPanelParam::onHintMaxHeldDown, this );
        more->setHeldDownDelay( PARAM_STEP_TIME_THRESHOLD );
    }

    setVisible(FALSE);
    setBorderVisible( FALSE );
}

LLScrollingPanelParam::~LLScrollingPanelParam()
{
}
void LLScrollingPanelParam::updatePanel(BOOL allow_modify)
{
    if (!mWearable)
    {
        // not editing a wearable just now, no update necessary
        return;
    }
    LLScrollingPanelParamBase::updatePanel(allow_modify);

    mHintMin->requestUpdate( sUpdateDelayFrames++ );
    mHintMax->requestUpdate( sUpdateDelayFrames++ );
    getChildView("less")->setEnabled(mAllowModify);
    getChildView("more")->setEnabled(mAllowModify);
}

void LLScrollingPanelParam::setVisible( BOOL visible )
{
    if( getVisible() != visible )
    {
        LLPanel::setVisible( visible );
        if (mHintMin)
            mHintMin->setAllowsUpdates( visible );
        if (mHintMax)
            mHintMax->setAllowsUpdates( visible );

        if( visible )
        {
            if (mHintMin)
                mHintMin->setUpdateDelayFrames( sUpdateDelayFrames++ );
            if (mHintMax)
                mHintMax->setUpdateDelayFrames( sUpdateDelayFrames++ );
        }
    }
}

void LLScrollingPanelParam::draw()
{
    if( !mWearable )
    {
        return;
    }

    getChildView("less")->setVisible( mHintMin->getVisible());
    getChildView("more")->setVisible( mHintMax->getVisible());

    // hide borders if texture has been loaded
    getChildView("left_border")->setVisible( !mHintMin->getVisible());
    getChildView("right_border")->setVisible( !mHintMax->getVisible());

    // Draw all the children except for the labels
    getChildView("min param text")->setVisible( FALSE );
    getChildView("max param text")->setVisible( FALSE );
    LLPanel::draw();

    // If we're in a focused floater, don't apply the floater's alpha to visual param hint,
    // making its behavior similar to texture controls'.
    F32 alpha = getTransparencyType() == TT_ACTIVE ? 1.0f : getCurrentTransparency();

    // Draw the hints over the "less" and "more" buttons.
    gGL.pushUIMatrix();
    {
        const LLRect& r = mHintMin->getRect();
        gGL.translateUI((F32)r.mLeft, (F32)r.mBottom, 0.f);
        mHintMin->draw(alpha);
    }
    gGL.popUIMatrix();

    gGL.pushUIMatrix();
    {
        const LLRect& r = mHintMax->getRect();
        gGL.translateUI((F32)r.mLeft, (F32)r.mBottom, 0.f);
        mHintMax->draw(alpha);
    }
    gGL.popUIMatrix();


    // Draw labels on top of the buttons
    getChildView("min param text")->setVisible( TRUE );
    drawChild(getChild<LLView>("min param text"));

    getChildView("max param text")->setVisible( TRUE );
    drawChild(getChild<LLView>("max param text"));
}

// static
void LLScrollingPanelParam::onSliderMouseDown(LLUICtrl* ctrl, void* userdata)
{
}

// static
void LLScrollingPanelParam::onSliderMouseUp(LLUICtrl* ctrl, void* userdata)
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;
    LLVisualParamHint::requestHintUpdates( self->mHintMin, self->mHintMax );
}

// static
void LLScrollingPanelParam::onHintMinMouseDown( void* userdata )
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;
    self->onHintMouseDown( self->mHintMin );
}

// static
void LLScrollingPanelParam::onHintMaxMouseDown( void* userdata )
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;
    self->onHintMouseDown( self->mHintMax );
}


void LLScrollingPanelParam::onHintMouseDown( LLVisualParamHint* hint )
{
    // morph towards this result
    F32 current_weight = mWearable->getVisualParamWeight( hint->getVisualParam()->getID() );

    // if we have maxed out on this morph, we shouldn't be able to click it
    if( hint->getVisualParamWeight() != current_weight )
    {
        mMouseDownTimer.reset();
        mLastHeldTime = 0.f;
    }
}

// static
void LLScrollingPanelParam::onHintMinHeldDown( void* userdata )
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;
    self->onHintHeldDown( self->mHintMin );
}

// static
void LLScrollingPanelParam::onHintMaxHeldDown( void* userdata )
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;
    self->onHintHeldDown( self->mHintMax );
}

void LLScrollingPanelParam::onHintHeldDown( LLVisualParamHint* hint )
{
    F32 current_weight = mWearable->getVisualParamWeight( hint->getVisualParam()->getID() );

    if (current_weight != hint->getVisualParamWeight() )
    {
        const F32 FULL_BLEND_TIME = 2.f;
        F32 elapsed_time = mMouseDownTimer.getElapsedTimeF32() - mLastHeldTime;
        mLastHeldTime += elapsed_time;

        F32 new_weight;
        if (current_weight > hint->getVisualParamWeight() )
        {
            new_weight = current_weight - (elapsed_time / FULL_BLEND_TIME);
        }
        else
        {
            new_weight = current_weight + (elapsed_time / FULL_BLEND_TIME);
        }

        // Make sure we're not taking the slider out of bounds
        // (this is where some simple UI limits are stored)
        F32 new_percent = weightToPercent(new_weight);
        LLSliderCtrl* slider = getChild<LLSliderCtrl>("param slider");
        if (slider)
        {
            if (slider->getMinValue() < new_percent
                && new_percent < slider->getMaxValue())
            {
                mWearable->setVisualParamWeight( hint->getVisualParam()->getID(), new_weight);
                mWearable->writeToAvatar(gAgentAvatarp);
                gAgentAvatarp->updateVisualParams();

                slider->setValue( weightToPercent( new_weight ) );
            }
        }
    }
}

// static
void LLScrollingPanelParam::onHintMinMouseUp( void* userdata )
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;

    F32 elapsed_time = self->mMouseDownTimer.getElapsedTimeF32();

    LLVisualParamHint* hint = self->mHintMin;

    if (elapsed_time < PARAM_STEP_TIME_THRESHOLD)
    {
        // step in direction
        F32 current_weight = self->mWearable->getVisualParamWeight( hint->getVisualParam()->getID() );
        F32 range = self->mHintMax->getVisualParamWeight() - self->mHintMin->getVisualParamWeight();
        // step a fraction in the negative directiona
        F32 new_weight = current_weight - (range / 10.f);
        F32 new_percent = self->weightToPercent(new_weight);
        LLSliderCtrl* slider = self->getChild<LLSliderCtrl>("param slider");
        if (slider)
        {
            if (slider->getMinValue() < new_percent
                && new_percent < slider->getMaxValue())
            {
                self->mWearable->setVisualParamWeight(hint->getVisualParam()->getID(), new_weight);
                self->mWearable->writeToAvatar(gAgentAvatarp);
                slider->setValue( self->weightToPercent( new_weight ) );
            }
        }
    }

    LLVisualParamHint::requestHintUpdates( self->mHintMin, self->mHintMax );
}

void LLScrollingPanelParam::onHintMaxMouseUp( void* userdata )
{
    LLScrollingPanelParam* self = (LLScrollingPanelParam*) userdata;

    F32 elapsed_time = self->mMouseDownTimer.getElapsedTimeF32();

    if (isAgentAvatarValid())
    {
        LLVisualParamHint* hint = self->mHintMax;

        if (elapsed_time < PARAM_STEP_TIME_THRESHOLD)
        {
            // step in direction
            F32 current_weight = self->mWearable->getVisualParamWeight( hint->getVisualParam()->getID() );
            F32 range = self->mHintMax->getVisualParamWeight() - self->mHintMin->getVisualParamWeight();
            // step a fraction in the negative direction
            F32 new_weight = current_weight + (range / 10.f);
            F32 new_percent = self->weightToPercent(new_weight);
            LLSliderCtrl* slider = self->getChild<LLSliderCtrl>("param slider");
            if (slider)
            {
                if (slider->getMinValue() < new_percent
                    && new_percent < slider->getMaxValue())
                {
                    self->mWearable->setVisualParamWeight(hint->getVisualParam()->getID(), new_weight);
                    self->mWearable->writeToAvatar(gAgentAvatarp);
                    slider->setValue( self->weightToPercent( new_weight ) );
                }
            }
        }
    }

    LLVisualParamHint::requestHintUpdates( self->mHintMin, self->mHintMax );
}


F32 LLScrollingPanelParam::weightToPercent( F32 weight )
{
    LLViewerVisualParam* param = mParam;
    return (weight - param->getMinWeight()) /  (param->getMaxWeight() - param->getMinWeight()) * 100.f;
}

F32 LLScrollingPanelParam::percentToWeight( F32 percent )
{
    LLViewerVisualParam* param = mParam;
    return percent / 100.f * (param->getMaxWeight() - param->getMinWeight()) + param->getMinWeight();
}