opsmpshp.cpp

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// $Id: opsmpshp.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
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----------------------------------

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 */
// The Ellipes creation and Editing operations


/*
*/


#include "camtypes.h"
#include "opsmpshp.h"

// Code headers
//#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "attrmgr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "document.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "docview.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "fillattr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "noderect.h"
#include "progress.h"
#include "objchge.h"
//#include "rndrgn.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "trans2d.h" - in camtypes.h [AUTOMATICALLY REMOVED]

// Resource headers
//#include "mario.h"
//#include "resource.h"
//#include "rik.h"
#include "bubbleid.h"

CC_IMPLEMENT_DYNCREATE( OpEditRectangle, SelOperation )


#define new CAM_DEBUG_NEW


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

>   OpEditRectangle::OpEditRectangle()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/6/94
    Purpose:    Dummy Contrustor

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

OpEditRectangle::OpEditRectangle()
{
    RectPath = NULL;
}




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

>   void OpEditRectangle::DoDrag(DocCoord Anchor, Spread* pSpread, NodeEllipse* pElip, INT32 Corner)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/6/94
    Inputs:     Anchor - The starting position of the drag
                pSpread - The spread that the drag started over
                pElip - The NodeEllipse that is being edited
                Corner - The corner of the Parallelogram that is fixed
    Purpose:    Starts up a drag for editing a NodeEllipse. It records the start postion and
                start spread etc as well as copying the parallelogram of the NodeEllipse
                to change and creating a new NodeEllipse for the purpose of render EORed
                stuff

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

void OpEditRectangle::DoDrag(DocCoord Anchor, Spread* pSpread, NodeRect* pRect, INT32 Corner)
{
    // Various starting positions
    StartSpread = pSpread;
    StartPoint = Anchor;
    LastMousePosition = Anchor;

    // The original shape in the tree
    OldRect = pRect;

    // Make a copy of the bounding parallelogram
    Parallel[0] = pRect->Parallel[0];
    Parallel[1] = pRect->Parallel[1];
    Parallel[2] = pRect->Parallel[2];
    Parallel[3] = pRect->Parallel[3];

    // Which corner of the parallelogram is not moving
    FixedCorner = Corner;

    // We will make a rect for the drag blobs
    UseRect = FALSE;
    RectPath = new NodeRect;
    if (RectPath!=NULL)
    {   
        if (RectPath->SetUpPath(12,12))
        {
            // Mark the Ellipse as being valid
            UseRect = TRUE;

            // Give the ellipse a valid path
            RectPath->CreateShape(pRect->GetBoundingRect());
            RectPath->Parallel[Corner] = Parallel[Corner];

            // Build a rect from the parallel ready for the Eor blobs
            RebuildParallelogram(Anchor);

            // and draw the blobs in
            RenderDragBlobs(DocRect(0,0,0,0), StartSpread, FALSE);

            // And tell the Dragging system that we need drags to happen
            StartDrag( DRAGTYPE_AUTOSCROLL );
        }
    }

    // If we do not have a path, then report the error
    if (UseRect == FALSE)
        InformError(_R(IDS_OUT_OF_MEMORY), _R(IDS_OK));
}
    


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

>   void OpEditRectangle::DragPointerMove(DocCoord PointerPos, ClickModifiers ClickMods,
                                        Spread* pSpread, BOOL bSolidDrag)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/6/94
    Inputs:     PointerPos - The current position of the mouse
                ClickMods - Which buttons and modifiers are held down
                pSpread - The Spread that the mouse is over now.
    Purpose:    Recalculates the ellipse according to the new position of the corner that
                is being dragged, EORs it to the screen and keeps the Parallelogram up
                to date.

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

void OpEditRectangle::DragPointerMove(DocCoord PointerPos, ClickModifiers ClickMods, Spread* pSpread, BOOL bSolidDrag)
{
    // Snap the actual mouse position to the grid if needed
    DocView::SnapCurrent(pSpread, &PointerPos);

    // Constrain the mouse motion if needed
    if (ClickMods.Constrain)
        DocView::ConstrainToAngle(StartPoint, &PointerPos);

    // If the mouse is in a different position then do something
    if (PointerPos != LastMousePosition)
    {
        // First Rub out the old Drag blobs
        RenderDragBlobs(DocRect(0,0,0,0), StartSpread, bSolidDrag);

        // Make sure that the coords are relative to the coorect spread
        if (pSpread != StartSpread)
            PointerPos = MakeRelativeToSpread(StartSpread, pSpread, PointerPos);

        // Build an ellipse ready for the Eor blobs
        RebuildParallelogram(PointerPos);

        // Update the last mouse position and re-calc the bounding rect
        LastMousePosition = PointerPos;
        RenderDragBlobs(DocRect(0,0,0,0), StartSpread, bSolidDrag);
    }
}




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

>   void OpEditRectangle::DragFinished(DocCoord PointerPos, ClickModifiers ClickMods,
                                    Spread* pSpread, BOOL Success, BOOL bSolidDrag)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/6/94
    Inputs:     PointerPos - The current position of the mouse
                ClickMods - Which buttons and modifiers are held down
                pSpread - The Spread that the mouse is over now.
                Success - TRUE if the drag was completed sucessfully.
    Purpose:    If the drag was a success then a copy of the original node in the tree is
                created and updated ellipse built. The original NodeEllipse is hidden and
                the new one if inserted into the tree. If any of these things fail then
                the operation will fail.

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

void OpEditRectangle::DragFinished(DocCoord PointerPos, ClickModifiers ClickMods, Spread*, BOOL Success, BOOL bSolidDrag)
{
    // First Rub out the old Drag blobs and end the drag
    RenderDragBlobs(DocRect(0,0,0,0), StartSpread, bSolidDrag);
    EndDrag();

    // Flag to say if everything has worked
    BOOL IsOk = FALSE;

    // if the drag was a sucess then start to build undo etc
    if (Success)
    {
        // Will the ellipse allow the op?
        ObjChangeFlags cFlags;
        cFlags.ReplaceNode = TRUE;
        ObjChangeParam ObjChange(OBJCHANGE_STARTING,cFlags,OldRect,this);
        IsOk = OldRect->AllowOp(&ObjChange);    

        // build all the undo and complete the edit
        if (IsOk) IsOk = CompleteOperation();

        if (IsOk)
        {
            // Update all the effected parents
            ObjChange.Define(OBJCHANGE_FINISHED,cFlags,OldRect,this);
            IsOk = UpdateChangedNodes(&ObjChange);
        }
    }

    // If something went wrong, then fail
    if (IsOk==FALSE)
        FailAndExecute();

    // If we have an rect to work with then get rid of it
    if (UseRect)
        delete RectPath;

    // always call end
    End();
}




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

>   BOOL OpEditRectangle::CompleteOperation()

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/8/94
    Returns:    TRUE if it worked, FALSE if it failed
    Purpose:    Builds all the undo and generally edits the rectangle.

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

BOOL OpEditRectangle::CompleteOperation()
{
    // Start a slow job
    BeginSlowJob();

    // Get a node to copy the original into
    Node* pNode;
    if (!OldRect->NodeCopy(&pNode))
        return FALSE;

    // Get our new node as the correct type
    ENSURE(pNode->IsKindOf(CC_RUNTIME_CLASS(NodeRect)), "Node should have been a NodeRect");
    NodeRect* pRect = (NodeRect*) pNode;

    // Create an rect to fill the bounding rect
    pRect->Parallel[0] = RectPath->Parallel[0];
    pRect->Parallel[1] = RectPath->Parallel[1];
    pRect->Parallel[2] = RectPath->Parallel[2];
    pRect->Parallel[3] = RectPath->Parallel[3];

    pRect->UpdateShape();
    pRect->InkPath.IsFilled = TRUE;

    // Start building the undo
    if (!DoStartSelOp(FALSE))
        return FALSE;

    // Add the new rect to the tree
    if (!DoInsertNewNode(pRect, OldRect, NEXT, TRUE))
        return FALSE;

    // Invalidate the region of the old rect
    if (!DoInvalidateNodeRegion(OldRect, TRUE))
        return FALSE;

    // and remove the old Rect from the tree
    if (!DoHideNode(OldRect, TRUE))
        return FALSE;

    // Transform the Node Children according to bounding box changes
    if (!TransformChildAttrs(pRect))
        return FALSE;

    // everything has worked, so return TRUE
    return TRUE;
}



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

>   BOOL OpEditRectangle::TransformChildAttrs(NodeRect* pRect)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/8/94
    Purpose:    This performs a bodge that Charles asked to be added that scales the attributes
                when the rectangle is edited.

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

BOOL OpEditRectangle::TransformChildAttrs(NodeRect* pRect)
{
    DocRect OldBounds = OldRect->GetBoundingRect(TRUE);
    DocRect NewBounds = pRect->GetBoundingRect(TRUE);

    // Get the Width and Height of the two rectangles
    INT32 OldWidth  = OldBounds.Width();
    INT32 OldHeight = OldBounds.Height();
    INT32 NewWidth  = NewBounds.Width();
    INT32 NewHeight = NewBounds.Height();

    // Find the Centre of each rectangle
    OldBounds.Translate(OldWidth/2, OldHeight/2);
    NewBounds.Translate(NewWidth/2, NewHeight/2);
    DocCoord OldCentre = OldBounds.lo;
    DocCoord NewCentre = NewBounds.lo;

    // Calculate the difference in size between the two rectangles
    FIXED16 xscale = FIXED16(double(NewWidth)/double(OldWidth));
    FIXED16 yscale = FIXED16(double(NewHeight)/double(OldHeight));

    // And now make a transform for the attribute
    // First move the old attribute position to the origin
    Matrix AttrTrans = Matrix(-OldCentre.x, -OldCentre.y);

    // Now scale it
    AttrTrans *= Matrix(xscale, yscale);

    // And finally move it to the new position
    AttrTrans *= Matrix(NewCentre.x, NewCentre.y);

    // Now scan for all Attribute Children and Transform them
    Node* pNode = pRect->FindFirstChild();
    while (pNode != NULL)
    {
        if (pNode->IsKindOf(CC_RUNTIME_CLASS(AttrFillGeometry)))
        {
            // get the transform to use
            Trans2DMatrix* Trans = new Trans2DMatrix(AttrTrans);

            // get the node and transform it
            //NodeAttribute* NodeToTransform = (NodeAttribute*)pNode;
//          RangeControl rc = {TRUE, TRUE, FALSE};
            Range temp(pNode, pNode, RangeControl(TRUE,TRUE,FALSE));
            if (!DoTransformNodes(temp, Trans))
            {
                delete Trans;
                return FALSE;
            }
        }

        // go get the next one
        pNode = pNode->FindNext();
    }

    return TRUE;
}




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

>   void OpEditRectangle::RebuildParallelogram(DocCoord PointerPos)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/6/94
    Inputs:     PointerPos - The coords of the Parallelograms corner that is being dragged
    Purpose:    Recalculates the parallelogram based on the corner being dragged and the
                fixed corner. The new parallelogram is copied into the Ellipse we are using
                for EORing and the Ellipse rebuilt to fit the parallelogram

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

void OpEditRectangle::RebuildParallelogram(DocCoord PointerPos)
{
    // Lets number the coordinates. 0 is the fixed one and go clockwise from there
    INT32 pos0, pos1, pos2, pos3;
    pos0 = FixedCorner;

    if (pos0>1)
        pos2 = pos0-2;
    else
        pos2 = pos0+2;

    if (pos0==3)
        pos1 = 0;
    else
        pos1 = pos0+1;

    if (pos0==0)
        pos3 = 3;
    else
        pos3 = pos0-1;

    // Calculate the offsets from the old point and the fixed point
    double dx0 = PointerPos.x - Parallel[pos2].x;
    double dy0 = PointerPos.y - Parallel[pos2].y;

    double dx3 = Parallel[pos1].x - Parallel[pos0].x;
    double dy3 = Parallel[pos1].y - Parallel[pos0].y;

    double dx4 = Parallel[pos3].x - Parallel[pos0].x;
    double dy4 = Parallel[pos3].y - Parallel[pos0].y;
    
    // Calculate the bits that we need to know
    double dx1 = dx3 * ((dy0*dx4-dy4*dx0) / (dx4*dy3-dy4*dx3));
    double dy1 = dy3 * ((dy0*dx4-dy4*dx0) / (dx4*dy3-dy4*dx3));
    double dx2 = dx4 * ((dx3*dy0-dy3*dx0) / (dy4*dx3-dx4*dy3));
    double dy2 = dy4 * ((dx3*dy0-dy3*dx0) / (dy4*dx3-dx4*dy3));

    // Change the parallelogram
    RectPath->Parallel[pos1].x = Parallel[pos1].x + (INT32)dx1;
    RectPath->Parallel[pos1].y = Parallel[pos1].y + (INT32)dy1;

    RectPath->Parallel[pos3].x = Parallel[pos3].x + (INT32)dx2;
    RectPath->Parallel[pos3].y = Parallel[pos3].y + (INT32)dy2;
    
    RectPath->Parallel[pos2] = PointerPos;

    // Build an ellipse in this parallelogram
    RectPath->UpdateShape();
}



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

>   void OpEditRectangle::RenderDragBlobs(DocRect Rect, Spread* pSpread, BOOL bSolidDrag)

    Author:     Rik_Heywood (Xara Group Ltd) <camelotdev@xara.com>
    Created:    1/6/94
    Inputs:     Rect - the rect that needs redrawing
                pSpread  - the spread that is being rendered
    Purpose:    Renders the Ellipse as it will look if the drag were to end. If we failed
                to create the Ellipse earlier, it will draw a bounding rect

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

void OpEditRectangle::RenderDragBlobs(DocRect Rect, Spread* pSpread, BOOL bSolidDrag)
{
    // If being called from DocView::RenderView, then the spread could be wrong
    if (pSpread != StartSpread)
        return;

    // Decide what to area to redraw
    DocRect* pRect = NULL;
    if (!Rect.IsEmpty())
        pRect = &Rect;

    // Start an eor render session
    RenderRegion* pRegion = DocView::RenderOnTop(pRect, pSpread, ClippedEOR);
    while (pRegion)
    {
        // Set the line colour 
        pRegion->SetLineColour(COLOUR_XORNEW);

        // Draw the Rectangle
        RectPath->RenderEorDrag(pRegion);

        // Get the Next render region
        pRegion = DocView::GetNextOnTop(pRect);
    }
}




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

>   BOOL OpEditRectangle::Declare()

    Author:     Mario_Shamtani (Xara Group Ltd) <camelotdev@xara.com>
    Created:    21/9/93
    Returns:    TRUE if all went OK, False otherwise
    Purpose:    Adds the operation to the list of all known operations

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

BOOL OpEditRectangle::Init()
{
    return (RegisterOpDescriptor(
                                0, 
                                _R(IDS_RECTANGLE_TOOL),
                                CC_RUNTIME_CLASS(OpEditRectangle), 
                                OPTOKEN_EDITRECT,
                                OpEditRectangle::GetState,
                                0,  /* help ID */
                                _R(IDBBL_EDITRECTOP),
                                0   /* bitmap ID */));
}


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

>   OpState OpEditRectangle::GetState(String_256* Description, OpDescriptor*)

    Author:     Mario_Shamtani (Xara Group Ltd) <camelotdev@xara.com>
    Created:    15/11/93
    Outputs:    Description - GetState fills this string with an approriate description
                of the current state of the push tool
    Returns:    The state of the operation, so that menu items (ticks and greying can be
                done properly
    Purpose:    Find out the state of the operation at the specific time

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

OpState OpEditRectangle::GetState(String_256* Description, OpDescriptor*)
{
    OpState Blobby;
    
    return Blobby;
}

---