lltoolobjpicker.cpp

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// LLToolObjPicker is a transient tool, useful for a single object pick.

#include "llviewerprecompiledheaders.h"

#include "lltoolobjpicker.h"

#include "llagent.h"
#include "llselectmgr.h"
#include "llworld.h"
#include "viewer.h"                             // for gFPSClamped, pie menus
#include "llviewercontrol.h"
#include "llmenugl.h"
#include "lltoolmgr.h"
#include "llviewerobject.h"
#include "llviewerobjectlist.h"
#include "llviewermenu.h"
#include "llviewercamera.h"
#include "llviewerwindow.h"
#include "lldrawable.h"

LLToolObjPicker* gToolObjPicker = NULL;

LLToolObjPicker::LLToolObjPicker()
:       LLTool( "ObjPicker", NULL ),
        mPicked( FALSE ),
        mHitObjectID( LLUUID::null ),
        mExitCallback( NULL ),
        mExitCallbackData( NULL )
{ }


// returns TRUE if an object was selected 
BOOL LLToolObjPicker::handleMouseDown(S32 x, S32 y, MASK mask)
{
        LLView* viewp = gViewerWindow->getRootView();
        BOOL handled = viewp->handleMouseDown(x, y, mask);

        mHitObjectID.setNull();

        if (! handled)
        {
                // didn't click in any UI object, so must have clicked in the world
                gViewerWindow->hitObjectOrLandGlobalAsync(x, y, mask, pickCallback);
                handled = TRUE;
        }
        else
        {
                if (hasMouseCapture())
                {
                        setMouseCapture(FALSE);
                }
                else
                {
                        llwarns << "PickerTool doesn't have mouse capture on mouseDown" << llendl;      
                }
        }

        // Pass mousedown to base class
        LLTool::handleMouseDown(x, y, mask);

        return handled;
}

void LLToolObjPicker::pickCallback(S32 x, S32 y, MASK mask)
{
        // You must hit the body for this tool to think you hit the object.
        LLViewerObject* objectp = NULL;
        objectp = gObjectList.findObject( gLastHitObjectID );
        if (objectp)
        {
                gToolObjPicker->mHitObjectID = objectp->mID;
                gToolObjPicker->mPicked = TRUE;
        }
}


BOOL LLToolObjPicker::handleMouseUp(S32 x, S32 y, MASK mask)
{
        LLView* viewp = gViewerWindow->getRootView();
        BOOL handled = viewp->handleHover(x, y, mask);
        if (handled)
        {
                // let UI handle this
        }

        LLTool::handleMouseUp(x, y, mask);
        if (hasMouseCapture())
        {
                setMouseCapture(FALSE);
        }
        else
        {
                llwarns << "PickerTool doesn't have mouse capture on mouseUp" << llendl;        
        }
        return handled;
}


BOOL LLToolObjPicker::handleHover(S32 x, S32 y, MASK mask)
{
        LLView *viewp = gViewerWindow->getRootView();
        BOOL handled = viewp->handleHover(x, y, mask);
        if (!handled) 
        {
                // Used to do pick on hover.  Now we just always display the cursor.
                ECursorType cursor = UI_CURSOR_ARROWLOCKED;

                cursor = UI_CURSOR_TOOLPICKOBJECT3;

                gViewerWindow->getWindow()->setCursor(cursor);
        }
        return handled;
}


void LLToolObjPicker::onMouseCaptureLost()
{
        if (mExitCallback)
        {
                mExitCallback(mExitCallbackData);

                mExitCallback = NULL;
                mExitCallbackData = NULL;
        }

        mPicked = FALSE;
        mHitObjectID.setNull();
}

// virtual
void LLToolObjPicker::setExitCallback(void (*callback)(void *), void *callback_data)
{
        mExitCallback = callback;
        mExitCallbackData = callback_data;
}

// virtual
void LLToolObjPicker::handleSelect()
{
        LLTool::handleSelect();
        setMouseCapture(TRUE);
}

// virtual
void LLToolObjPicker::handleDeselect()
{
        if (hasMouseCapture())
        {
                LLTool::handleDeselect();
                setMouseCapture(FALSE);
        }
}

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