dragpick.cpp

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// $Id: dragcol.cpp 1149 2006-05-22 08:50:00Z alex $
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 */
// DragCol.cpp - Colour DragInformation base class

/*
*/


#include "camtypes.h"

//#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "ccolbar.h"
#include "coldlog.h"
#include "colourix.h"
#include "colormgr.h"
#include "devcolor.h"
//#include "docview.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "dragpick.h"
#include "dragmgr.h"
#include "keypress.h"
#include "camframe.h"
//#include "resource.h"
#include "sgcolour.h"
#include "camview.h"
//#include "attrmgr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "fillattr.h" - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "ink.h" - in camtypes.h [AUTOMATICALLY REMOVED]
#include "lineattr.h"

#include "palman.h"

#include "backgrnd.h"   // OpBackground
#include "keypress.h"   // KeyPress
//#include "galstr.h"       // _R(IDS_DRAGCOL_DROP_SETPAGEBACKGROUND)

CC_IMPLEMENT_DYNCREATE(ColourPickerDragInformation, DragInformation)



const INT32 CellSize = 16;      // X/Y size of the solid-dragged colour square



// Default to non-transparent dragging
INT32 ColourPickerDragInformation::DragTransparency = 0;



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

>   void ColourPickerDragInformation::InitObject(void)
     
    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006

    Purpose:    Shared code for initialising the object - called by all constructors

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

void ColourPickerDragInformation::InitObject(void)
{
    // Init member variables
    TheColour = DocColour(COLOUR_TRANS);
    m_Status=NO_COLOUR;

    // Set up a few things about this drag
    DoesSolidDrag = TRUE;
    
    // offset of colour swatch from the pointer
    SolidDragOffset.x = 14;
    SolidDragOffset.y = 4;     
    
    // size of the solid drag redraw
    SolidDragSize.x = CellSize;
    SolidDragSize.y = CellSize;
}



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

>   void ColourPickerDragInformation::ColourPickerDragInformation() 
     
    Author:     Chris_Snook (Xara Group Ltd) <camelotdev@xara.com>
    Created:    12/1/95       

    Purpose:    Constructor

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

ColourPickerDragInformation::ColourPickerDragInformation()
{
    InitObject();
}


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

>   static BOOL ColourPickerDragInformation::Init()

    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006
    Returns:    -
    Purpose:    Initialise any Colour Drag stuff. (eg. ini file preferences).
    SeeAlso:    -

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

BOOL ColourPickerDragInformation::Init()
{
    // Setup preference for drag transparency
    if (GetApplication()->DeclareSection(_T("Dragging"), 1))
        GetApplication()->DeclarePref( NULL, _T("ColourPickerDragTransparency"), &DragTransparency, 0, 100);

    return TRUE;
}




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

>   void ColourPickerDragInformation::GetCursorID(DragTarget* pDragTarget)

    Author:     Will_Cowling (Xara Group Ltd) <camelotdev@xara.com>
    Created:    25/3/95
    Purpose:    Set cursor over this target


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

UINT32 ColourPickerDragInformation::GetCursorID(DragTarget* pDragTarget)
{
    return GetCursorID();
}



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

>   virtual BOOL ColourPickerDragInformation::GetStatusLineText(String_256 * TheText, DragTarget* pDragTarget)

    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006
    Returns:    Whether String is valid
    Purpose:    provide status line text for this target
   
********************************************************************************************/

BOOL ColourPickerDragInformation::GetStatusLineText(String_256 * TheText, DragTarget* pDragTarget)
{
    return GetStatusLineText(TheText);
}


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

>   virtual UINT32 ColourPickerDragInformation::GetCursorID()

    Author:     Chris_Snook (Xara Group Ltd) <camelotdev@xara.com>
    Created:    15/1/95
    Returns:    a cursor ID to set during this drag
    Purpose:    Determines what cursor to display during a colour drag
   
********************************************************************************************/

UINT32 ColourPickerDragInformation::GetCursorID()
{
    switch (m_Status)
    {
        case DOC_COLOUR:
            return _R(IDC_COLOURPICKERCURSORDOC);
        case SCREEN_COLOUR:
            return _R(IDC_COLOURPICKERCURSOR);
        case COLOURBAR_COLOUR:
            return _R(IDC_COLOURPICKERCURSORCOLBAR);
        default:
            break;
    }

    return(_R(IDC_COLOURPICKERCURSORNOREAD));
}



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

>   virtual BOOL ColourPickerDragInformation::GetStatusLineText(String_256 * TheText)

    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006

    Outputs:    TheText - If it returns TRUE, this is filled in with status line text
    Returns:    Whether String is valid

    Purpose:    provide status line text for this drag
   
********************************************************************************************/

BOOL ColourPickerDragInformation::GetStatusLineText(String_256 *TheText)
{
    ResourceID r;
    switch (m_Status)
    {
        case DOC_COLOUR:
            r = _R(IDS_DRAGGINGCOLOURPICKERTOOLDOCRC);
            break;
        case SCREEN_COLOUR:
            r = _R(IDS_DRAGGINGCOLOURPICKERTOOLRS);
            break;
        case COLOURBAR_COLOUR:
            r = _R(IDS_DRAGGINGCOLOURPICKERTOOLCOLOURBARRC);
            break;
        default:
            r = _R(IDS_DRAGGINGCOLOURPICKERTOOLNOREAD);
    }

    *TheText=String_256(r);
    return TRUE;
}




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

>   void ColourPickerDragInformation::OnDrawSolidDrag(CRect DragRect,CDC * TheDC) 
     
    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006
    Inputs:     TheDC - pointer to a DC ready to draw into.
    Outputs:    -
    Returns:    -
    Purpose:    allows the drag to draw into a Device Context - DragManager will look after
                painting the background etc.
    Errors:     -
    SeeAlso:    -

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

BOOL ColourPickerDragInformation::OnDrawSolidDrag(wxPoint Origin, wxDC *TheDC)
{
    if (m_Status == NO_COLOUR)
        return FALSE;   

    // set up gbrush
//  CPalette * OldPal = NULL;
//  if (PaletteManager::UsePalette())
//  {
//      OldPal = PaletteManager::StartPaintPalette( TheDC );
//  }

    GBrush GDrawBrush;
    GDrawBrush.Init(TheDC);
    GDrawBrush.Start();

    // get a gbrush brush
    Document *ScopeDoc = Document::GetSelected();
    ERROR2IF(ScopeDoc == NULL, FALSE, "No Selected Doc !");

    wxBrush* pDragBrush = new wxBrush;
    
    BOOL BrushCreate = TRUE;

    if (pDragBrush != NULL )
    {
        if (TheColour.IsTransparent())
        {
//          TheDC->SetBkColor(RGB(255,255,255));        // ensure white background
            pDragBrush->SetStyle(wxCROSSDIAG_HATCH);
            pDragBrush->SetColour(wxColour(0,0,0));     // Fill with black/white cross hatch
        }
        else
        {
            DWORD ScreenWord;

            ColourContextRGBT *CCrgbt = (ColourContextRGBT *)
                        ColourManager::GetColourContext(COLOURMODEL_RGBT, DocView::GetSelected());
            ScreenWord = ConvertColourToScreenWord(CCrgbt, &TheColour);

            // create the Brush and Pen
            if (GDrawBrush.Available())
            {
                GDrawBrush.GetLogBrush((COLORREF)ScreenWord, pDragBrush);
            }
            else
                pDragBrush->SetColour((COLORREF)ScreenWord);
        }

        wxPen MyPen(wxColour(0,0,0));

        // Set the brush origin so the dither (or Hatch) patterns
        // don't move around as you drag.
//      TheDC->SetBrushOrg(Origin.x, Origin.y);
        
        //the rectangle to draw into
        wxRect DrawRect(Origin.x, Origin.y, SolidDragSize.x-1, SolidDragSize.y-1);

        // select brushes and pens ..
        TheDC->SetBrush(*pDragBrush);
        TheDC->SetPen(MyPen);

        // draw the thingy. In this case, it's a colour patch, circular for a spot colour, else a square
#ifndef WEBSTER // don't distinguish spots in Webster Martin 15/07/97
        if (!TheColour.IsTransparent() && TheColour.GetSpotParent() != NULL)
            TheDC->DrawEllipse(DrawRect);
        else
#endif // WEBSTER
            TheDC->DrawRectangle(DrawRect);
                                    
        // clean up the dc
        TheDC->SetBrush(wxNullBrush);
        TheDC->SetPen(wxNullPen);

        // delete the objects
        delete pDragBrush;
    }
    else
        BrushCreate = FALSE;
    
    // Finish with GBrush
    GDrawBrush.Stop();
//  if (OldPal)
//      PaletteManager::StopPaintPalette(TheDC, OldPal);
    
    // problems !!!
    ERROR2IF(!BrushCreate, FALSE, "Failed to make a solid drag brush!");

    return TRUE;
}



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

>   virtual INT32 ColourPickerDragInformation::GetDragTransparency()
 
    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006
    Returns:    -
    Purpose:    Specifies how transparent a drag should be.
                A value of 0, will cause a normal solid blit.
                Any other value (between 0 and 100), will cause a masked blit.
    SeeAlso:    -

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

INT32 ColourPickerDragInformation::GetDragTransparency()
{
    return ColourPickerDragInformation::DragTransparency;
}


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

>   virtual BOOL ColourPickerDragInformation::OnMouseMove(wxPoint p)
 
    Author:     Alex Bligh <alex@alex.org.uk>
    Created:    30/05/2006
    Returns:    -
    Purpose:    Called on a mouse move. Find the doc colour under point p
    SeeAlso:    -

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

BOOL ColourPickerDragInformation::OnMouseMove(wxPoint p)
{
    Status OldStatus = m_Status;
    m_Status = SCREEN_COLOUR;
    DocColour col(COLOUR_TRANS);

    CWindowID   WinID=::wxChildWindowFromPoint(p, FALSE, -1);
    DocView*    pDocView=NULL;
    Spread*     pSpread=NULL;
    WinCoord    WndPos(0,0);
    DocCoord    DocPos(0,0);

    ColourEditDlg* pColourEditDlg = ColourEditDlg::GetColourEditDlg ();
    // Check we can't pick from the colour picker
    wxWindow * w = WinID;
    while (w)
    {
        if (pColourEditDlg && (w==pColourEditDlg->WindowID))
        {
            // No picking colours from the colour editor
            m_Status = NO_COLOUR;
            break;
        }
        if (w->IsKindOf(CLASSINFO(CColourBar)))
        {
            wxPoint cpoint = w->ScreenToClient(p);
            if (((CColourBar*) w)->IsColourPickerOverStripRect (w, cpoint))
            {
                IndexedColour * pIndexedColour = NULL;
                m_Status = COLOURBAR_COLOUR;
                ((CColourBar*) w)->DoColourPickerColour (w, cpoint, &pIndexedColour);
                if (pIndexedColour)
                {
                    // Disassociate from indexed colour
                    DocColour Temp;
                    Temp.MakeRefToIndexedColour(pIndexedColour);
                    INT32 r, g, b;
                    Temp.GetRGBValue(&r, &g, &b);
                    col = DocColour(r, g, b);
                }
                break;
            }
        }
        w=w->GetParent();
    }

    Pixel32bpp Pix;
    NodeRenderableInk* pNode = NULL;

    if (m_Status == SCREEN_COLOUR)
    {
        if (WinID != NULL)
            pDocView=CCamView::GetDocViewFromWindowID(WinID);
    
        if (pDocView != NULL)
        {
            OilCoord OilPos = WndPos.ToOil(pDocView, TRUE);
            pSpread = pDocView->OilToSpreadCoord(OilPos, &DocPos);
        }
    
        if (pDocView)       // were over an active (or inactive document)
        {
            if (pDocView==DocView::GetSelected())
            {
                pNode = NodeRenderableInk::FindSimpleAtPointForColourPicker (pSpread, DocPos, Pix);
                m_Status = DOC_COLOUR;
            }
            else
            {   
                m_Status = SCREEN_COLOUR;
            }
        }
    }

    switch (m_Status)
    {
        case DOC_COLOUR:
        {
            const double conversion = 1.0/255.0;
                            
            FIXED24 rValF24 = Pix.Red * conversion;
            FIXED24 gValF24 = Pix.Green * conversion;
            FIXED24 bValF24 = Pix.Blue * conversion;
            FIXED24 tValF24 = Pix.Alpha * conversion;
            
            //DocColour* TheColour = new DocColour (rValF24, gValF24, bValF24);
            ColourRGBT TheColourRGBT;
            TheColourRGBT.Red = rValF24;
            TheColourRGBT.Green = gValF24;
            TheColourRGBT.Blue = bValF24;
            TheColourRGBT.Transparent = tValF24;
            col = DOCCOLOUR_RGBT(&TheColourRGBT);//DocColour (rValF24, gValF24, bValF24);
        }

        case SCREEN_COLOUR:
        {
            wxColour c(*wxBLACK);
            ScreenDC.GetPixel(p, &c);

            const double conversion = 1.0/255.0;

            FIXED24 rValF24 = c.Red() * conversion;
            FIXED24 gValF24 = c.Green() * conversion;
            FIXED24 bValF24 = c.Blue() * conversion;

            col=DocColour(rValF24, gValF24, bValF24);
        }

        case COLOURBAR_COLOUR:
        default:
            break;

    }

    if ((OldStatus != m_Status ) || (col !=TheColour))
    {
        TheColour = col;

        // COLOURBAR_COLOUR has already updated the colour picker
        if ((m_Status != NO_COLOUR) && (m_Status != COLOURBAR_COLOUR))
        {
            IndexedColour* theIndexedColour = ColourManager::GenerateNewUnnamedColour (ColourManager::GetColourList(), &TheColour);
    
            // Tell the colour edit dlg about the node that this colour came
            // from so it can block attribute application if its the same node
            if (pColourEditDlg && theIndexedColour)
                pColourEditDlg->SetEditingColour (theIndexedColour, pNode);
            //pColourEditDlg->SetEditingColour (theIndexedColour);
        }

    }

    return TRUE;
}

---