dragtool.cpp

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// $Id: dragtool.cpp 1282 2006-06-09 09:46:49Z alex $
// Implementation of the drag tool.
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 */

#include "camtypes.h"
#include "dragtool.h"
#include "toollist.h"
#include "selector.h"
//#include "spread.h" - in camtypes.h [AUTOMATICALLY REMOVED]

DECLARE_SOURCE( "$Revision: 1282 $" );

// Run-time type checking etc etc
CC_IMPLEMENT_MEMDUMP(DragTool, Tool_v1)

// report memory line info
#define new  CAM_DEBUG_NEW

// These are still char* while we wait for resource technology to be developed for modules
TCHAR* DragTool::FamilyName = _T("Drag Tools");
TCHAR* DragTool::ToolName   = _T("Drag Tool");
TCHAR* DragTool::Purpose    = _T("The parent tool of Selector and Slice tools");
TCHAR* DragTool::Author     = _T("Karim MacDonald");

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

>   virtual void DragTool::DragMove(TransformBoundingData* pBoundingData)

    Author:     Karim_MacDonald (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/10/1999
    Purpose:    Placeholder for base-class implementations.
                Does nothing here.

********************************************************************************************/
void DragTool::DragMove(TransformBoundingData* pBoundingData)
{
    // empty.
}



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

>   virtual BOOL DragTool::BeyondFixedRange(double fpFixedVal)

    Author:     Karim_MacDonald (Xara Group Ltd) <camelotdev@xara.com> from JustinF's SelectorTool::BeyondFixedRange code.
    Created:    14/10/1999
    Inputs:     fpFixedVal      the double that is to be converted to fixed-point
    Returns:    TRUE if the number is beyond the range that fixed-piont numbers can
                represent, FALSE if its OK to convert.
    Purpose:    Checks for under/overflow in fixed-point calculations.

                This function hails from SelectorTool::BeyondFixedRange.
                The reason it is here is that it needs to be called from
                a pointer to a DragTool, without going through everyone
                elses code and re-casting their pointer to SelectorTool*.
                Because it is a small function, it is implemented here, as well as
                in SelectorTool.

********************************************************************************************/
BOOL DragTool::BeyondFixedRange(double fpFixedVal)
{
    const double fpMinFixPt = 1.0 / (INT32(SHRT_MAX) + 1);      // 1/32768
    const double fpMaxFixPt = SHRT_MAX;                         // 32767
    double fp = fabs(fpFixedVal);
    return fp < fpMinFixPt || fp > fpMaxFixPt;
}

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

>   virtual void DragTool::OnClick(DocCoord PointerPos, ClickType cType, ClickModifiers cMods, Spread* pSpread)

    Author:     Chris_Snook (Xara Group Ltd) <camelotdev@xara.com>
    Created:    17/7/2000
    Inputs:     standard things
    Returns:    -
    Purpose:    Call this function (for derived classes) when you don't want to process the
                message yourself (or you don't want to handle it).  This function locates the
                selector tool - and allows it to handle the message.

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

void DragTool::OnClick(DocCoord PointerPos, ClickType cType, ClickModifiers cMods, Spread* pSpread)
{
    if ((cType == CLICKTYPE_SINGLE) || (cType == CLICKTYPE_UP))
    {   
        ToolListItem* pSelectorItem = Tool::Find(TOOLID_SELECTOR);
        ERROR3IF(pSelectorItem == NULL, "ARGH! No Selector when we got a click!");
        ERROR3IF(pSelectorItem->m_pTool == NULL, "ARGH! No Selector when we got a click!");
        Tool* pSelector = pSelectorItem->m_pTool;

        if (pSelector)
        {   
            SelectorTool::AllowGuidelineScan (FALSE);
            pSelector->OnClick(PointerPos, cType, cMods, pSpread);
            SelectorTool::AllowGuidelineScan (TRUE);
        }
    }
}

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