tranlate.cpp

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// $Id: tranlate.cpp 1282 2006-06-09 09:46:49Z alex $
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 */
// Operation for doing an interactive Translation of the selection

/*
*/

#include "camtypes.h"
#include "tranlate.h"

//#include "docview.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "rik.h"
//#include "clikdrag.h"

// Register my files version number
DECLARE_SOURCE("$Revision: 1282 $");

// An implement to match the Declare in the .h file.
CC_IMPLEMENT_DYNCREATE(OpTranslateTrans, TransOperation)

// This will get Camelot to display the filename and linenumber of any memory allocations
// that are not released at program exit
#define new CAM_DEBUG_NEW





/********************************************************************************************

>   OpTranslateTrans::OpTranslateTrans()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    20/7/93
    Purpose:    Constructor. Does nothing.

********************************************************************************************/

OpTranslateTrans::OpTranslateTrans(): TransOperation()
{
    //Set status line help
    StatusHelpID = _R(IDS_TRANSLTRANS_STATUS1);
    StatusHelpID2 = _R(IDS_TRANSLTRANS_STATUS2);
    CanScaleLines = FALSE;
}




/********************************************************************************************

>   void OpTranslateTrans::InitTransformImmediate(OpParam* pOpParam)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    27/7/94
    Inputs:     pOpParam - The parameters that were passed into the operation
    Purpose:    Sets up the transform ready for an immediate translation. This is called from
                DoWithParam()
    SeeAlso:    TransOperation::DoWithParam()

********************************************************************************************/

void OpTranslateTrans::InitTransformImmediate(OpParam* pOpParam)
{
    // Set the initial position
    StartPos = DocCoord(0,0);
    RawStartPos = StartPos;
    MagStartPos = StartPos;

    // and copy the offset to translate by from Param2
    DocCoord* Offset = (DocCoord*)( PVOID(pOpParam->Param2) );
    LastPos.x = Offset->x;
    LastPos.y = Offset->y;

    OriginalGridOffset.x=0;
    OriginalGridOffset.y=0;
}


/********************************************************************************************

>   virtual void OpTranslateTrans::InitTransformOnDrag(DocCoord PointerPos, ClickModifiers ClickMods)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    19/7/94
    Inputs:     PointerPos - The position of the mouse at the start of the drag
                ClickMods - the keyboard modifiers that were active at the start of the drag
    Purpose:    Sets up the parameters needed to build the transform matrix at the start
                of the drag. This base class version of this function does nothing.

********************************************************************************************/

void OpTranslateTrans::InitTransformOnDrag(DocCoord PointerPos, ClickModifiers ClickMods)
{
    // make a note of the current mouse position
    LastPos = PointerPos;

    // Record the offset from the mouse pos to the grid
    OriginalGridOffset = GetStartPos();
    DocView::ForceSnapToGrid(StartSpread, &OriginalGridOffset);
    OriginalGridOffset = GetStartPos() - OriginalGridOffset;
}




/********************************************************************************************

>   virtual void OpTranslateTrans::UpdateTransformOnDrag(DocCoord PointerPos, Spread* pSpread,
                                    ClickModifiers& ClickMods)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    19/7/94
    Inputs:     PointerPos - The latest position of the mouse
    Purpose:    Does the calculations needed when the mouse moves to keep all the params
                needed to build the rotation matrix up to date.

********************************************************************************************/

void OpTranslateTrans::UpdateTransformOnDrag(DocCoord PointerPos, Spread* pSpread, ClickModifiers& ClickMods)
{
    if (!ClickMods.Constrain)
    {
        // Apply snapping to the pointer pos
        // First apply magnetic snapping alone
        if (MagneticGripPoint && DocView::SnapSelected(pSpread, &PointerPos, TRUE, FALSE))
        {
            // Magnetic snapping worked!
        }
        else
        {
            // Magnetic snapping failed!
            // If magnetic snapping failed then try grid snapping
            // on the adjusted coordinate
            if (ClickMods.Alternative1)
            {
                PointerPos = PointerPos - OriginalGridOffset;
                DocView::SnapSelected(pSpread, &PointerPos, FALSE, TRUE);
                PointerPos = PointerPos + OriginalGridOffset;
            }
            else
            {
                DocCoord Offset = PointerPos - LastPos;
                DocRect Bounds( BoundingData.x, BoundingData.y,
                                BoundingData.x+BoundingData.Width, BoundingData.y+BoundingData.Height
                               );
                Bounds.lo = Bounds.lo + Offset;
                Bounds.hi = Bounds.hi + Offset;
                DocRect SnappedBounds = Bounds;
                DocView::SnapSelected(pSpread,&SnappedBounds,LastRawPos,RawPos);
                PointerPos = PointerPos + (SnappedBounds.lo - Bounds.lo);
            }
        }
    }

    // Work out the offset from the last mouse pos
    INT32 dx = PointerPos.x - LastPos.x;
    INT32 dy = PointerPos.y - LastPos.y;

    // Add the offset into the structure
    BoundingData.x += dx;
    BoundingData.y += dy;
    BoundingData.XYChanged = TRUE;

    // Make a mental note of the current position
    LastPos = PointerPos;

    // Update the current spread (must do this if CanChangeSpread returns TRUE)
    CurrentSpread = pSpread;
}



/********************************************************************************************

>   virtual BOOL OpTranslateTrans::CanChangeSpread()

    Author:     Phil_Martin (Xara Group Ltd) <camelotdev@xara.com>
    Created:    05/June/2006
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if this transform allows the drag to be transferred to another spread
    Purpose:    Tell the baseclass functions whether to draw drag feedback only on the start
                spread or to allow drag rendering to be done on other spreads too.

********************************************************************************************/

BOOL OpTranslateTrans::CanChangeSpread()
{
    return TRUE;
}


/********************************************************************************************

>   void OpTranslateTrans::BuildMatrix()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    19/7/94
    Purpose:    Builds the transform matrix required to rotate the selection about the
                point CentreOfRot by the required number of degrees

********************************************************************************************/

void OpTranslateTrans::BuildMatrix()
{
    // Build a translation matrix by takeing the offset from the last mouse position
    // to the start mouse position
        Transform = Matrix(LastPos.x-GetStartPos().x, LastPos.y-GetStartPos().y);
}



/********************************************************************************************

>   virtual BOOL OpTranslateTrans::ShouldPointerBeOffset()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    13/9/94
    Returns:    FALSE
    Purpose:    Tells the base class of the operation that we want our mouse coords to be
                left alone

********************************************************************************************/

BOOL OpTranslateTrans::ShouldPointerBeOffset()
{
    return FALSE;
}




/********************************************************************************************

>   virtual void OpTranslateTrans::ConstrainDrag(DocCoord* PointerPos)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    19/7/94
    Inputs:     PointerPos - The current position of the mouse that needs to be constrained
    Outputs:    PointerPos - The position of the mouse after it has been constrained
    Purpose:    Will constrain the mouse position to lie along rays from the centre of
                rotation at the constrain angle apart (45 degrees by default)

********************************************************************************************/

void OpTranslateTrans::ConstrainDrag(DocCoord* PointerPos)
{
    // Lock the mouse to move along the axis or diagonally
    DocCoord Blobby = GetStartPos();
    DocView::ConstrainToAngle(Blobby, PointerPos);
}


/********************************************************************************************

>   BOOL OpTranslateTrans::Declare()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    5/7/93
    Returns:    TRUE if all went OK, False otherwise
    Purpose:    Adds the operation to the list of all known operations

********************************************************************************************/

BOOL OpTranslateTrans::Declare()
{
    return (RegisterOpDescriptor(0, _R(IDS_SELECTOR_MOVE), CC_RUNTIME_CLASS(OpTranslateTrans),
                                OPTOKEN_TRANSLATE, TransOperation::GetState)); 
}

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