[wxWidgets.git] / wxPython / src / pseudodc.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        common/pseudodc.cpp
// Purpose:     Implementation of the wxPseudoDC Class
// Author:      Paul Lanier
// Modified by:
// Created:     05/25/06
// RCS-ID:      $Id$
// Copyright:   (c) wxWidgets team
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
//include "wx/wxprec.h"

#undef DEBUG
#include <Python.h>
#include "wx/wxPython/wxPython.h"
#include "wx/wxPython/pseudodc.h"

// wxList based class definitions
#include <wx/listimpl.cpp>
WX_DEFINE_LIST(pdcOpList);
WX_DEFINE_LIST(pdcObjectList);

//----------------------------------------------------------------------------
// Helper functions used for drawing greyed out versions of objects
//----------------------------------------------------------------------------
wxColour &MakeColourGrey(const wxColour &c)
{
    static wxColour rval;
    rval.Set(byte((230-c.Red())*0.7+c.Red()),
             byte((230-c.Green())*0.7+c.Green()),
             byte((230-c.Blue())*0.7+c.Blue()));
    return rval;
}
wxBrush &GetGreyBrush(wxBrush &brush)
{
	static wxBrush b;
	wxColour c;
	b = brush;
	c = MakeColourGrey(brush.GetColour());
	b.SetColour(c);
	return b;
}

wxPen &GetGreyPen(wxPen &pen)
{
	static wxPen p;
	wxColour c;
	p = pen;
	c = MakeColourGrey(pen.GetColour());
	p.SetColour(c);
	return p;
}

void GreyOutImage(wxImage &img)
{
    unsigned char *data = img.GetData();
    unsigned char r,g,b;
    unsigned char mr,mg,mb;
    int i, tst;
    int len = img.GetHeight()*img.GetWidth()*3;
    if (img.HasMask())
    {
        mr = img.GetMaskRed();
        mg = img.GetMaskGreen();
        mb = img.GetMaskBlue();
    }
    tst=0;
    for (i=0;i<len;i+=3)
    {
        r=data[i]; g=data[i+1]; b=data[i+2];
        if (!img.HasMask() || 
            r!=mr || g!=mg || b!=mb)
        {
            if (!tst)
            {
                tst=1;
            }
            r = (unsigned char)((230.0-r)*0.7+r);
            g = (unsigned char)((230.0-g)*0.7+g);
            b = (unsigned char)((230.0-b)*0.7+b);
            data[i]=r; data[i+1]=g; data[i+2]=b;
        }
    }
}

wxIcon &GetGreyIcon(wxIcon &icon)
{
    wxBitmap bmp;
    bmp.CopyFromIcon(icon);
    wxImage img = bmp.ConvertToImage();
    GreyOutImage(img);
    wxBitmap bmp2(img,32);
    static wxIcon rval;
    rval.CopyFromBitmap(bmp2);
    return rval;
}

wxBitmap &GetGreyBitmap(wxBitmap &bmp)
{
    wxImage img = bmp.ConvertToImage();
    GreyOutImage(img);
    static wxBitmap rval(img,32);
    return rval;
}

// ============================================================================
// various pdcOp class implementation methods
// ============================================================================

// ----------------------------------------------------------------------------
// pdcDrawPolyPolygonOp constructor
// ----------------------------------------------------------------------------
pdcDrawPolyPolygonOp::pdcDrawPolyPolygonOp(int n, int count[], wxPoint points[],
                 wxCoord xoffset, wxCoord yoffset, int fillStyle) 
{
    m_n=n; m_xoffset=xoffset; m_yoffset=yoffset; m_fillStyle=fillStyle;
    int total_n=0;
    if (n)
    {
        m_count = new int[n];
        for(int i=0; i<n; i++) 
        {
            total_n+=count[i];
            m_count[i]=count[i];
        }
        if (total_n)
        {
            m_points = new wxPoint[total_n];
            for(int j=0; j<total_n; j++)
                m_points[j] = points[j];
        }
        else m_points=NULL;
    }
    else
    {
        m_points=NULL;
        m_count=NULL;
    }
    m_totaln = total_n;
}

// ----------------------------------------------------------------------------
// pdcDrawPolyPolygonOp destructor
// ----------------------------------------------------------------------------
pdcDrawPolyPolygonOp::~pdcDrawPolyPolygonOp()
{
    if (m_points) delete m_points;
    if (m_count) delete m_count;
    m_points=NULL;
    m_count=NULL;
}
        
// ----------------------------------------------------------------------------
// pdcDrawLinesOp constructor
// ----------------------------------------------------------------------------
pdcDrawLinesOp::pdcDrawLinesOp(int n, wxPoint points[],
             wxCoord xoffset, wxCoord yoffset)
{
    m_n=n; m_xoffset=xoffset; m_yoffset=yoffset;
    if (n)
    {
        m_points = new wxPoint[n];
        for (int i=0; i<n; i++)
            m_points[i] = points[i];
    }
    else m_points=NULL;
}

// ----------------------------------------------------------------------------
// pdcDrawLinesOp destructor
// ----------------------------------------------------------------------------
pdcDrawLinesOp::~pdcDrawLinesOp()
{
    if (m_points) delete m_points;
    m_points=NULL;
}
        
// ----------------------------------------------------------------------------
// pdcDrawPolygonOp constructor
// ----------------------------------------------------------------------------
pdcDrawPolygonOp::pdcDrawPolygonOp(int n, wxPoint points[],
             wxCoord xoffset, wxCoord yoffset, int fillStyle)
{
    m_n=n; m_xoffset=xoffset; m_yoffset=yoffset; m_fillStyle=fillStyle;
    if (n)
    {
        m_points = new wxPoint[n];
        for (int i=0; i<n; i++)
            m_points[i] = points[i];
    }
    else m_points=NULL;
}

// ----------------------------------------------------------------------------
// pdcDrawPolygonOp destructor
// ----------------------------------------------------------------------------
pdcDrawPolygonOp::~pdcDrawPolygonOp()
{
    if (m_points) delete m_points;
    m_points=NULL;
}

#if wxUSE_SPLINES
// ----------------------------------------------------------------------------
// pdcDrawSplineOp constructor
// ----------------------------------------------------------------------------
pdcDrawSplineOp::pdcDrawSplineOp(int n, wxPoint points[])
{
    m_n=n;
    if (n)
    {
        m_points = new wxPoint[n];
        for(int i=0; i<n; i++)
            m_points[i] = points[i];
    }
    else m_points=NULL;
}

// ----------------------------------------------------------------------------
// pdcDrawSplineOp destructor
// ----------------------------------------------------------------------------
pdcDrawSplineOp::~pdcDrawSplineOp()
{
    if (m_points) delete m_points;
    m_points=NULL;
}
#endif // wxUSE_SPLINES

// ============================================================================
// pdcObject implementation
// ============================================================================
// ----------------------------------------------------------------------------
// DrawToDC - play back the op list to the DC 
// ----------------------------------------------------------------------------
void pdcObject::DrawToDC(wxDC *dc)
{
    pdcOpList::Node *node = m_oplist.GetFirst(); 
    while(node)
    {
        node->GetData()->DrawToDC(dc, m_greyedout);
        node = node->GetNext();
    }
}

// ----------------------------------------------------------------------------
// Translate - translate all the operations by some dx,dy
// ----------------------------------------------------------------------------
void pdcObject::Translate(wxCoord dx, wxCoord dy)
{
    pdcOpList::Node *node = m_oplist.GetFirst(); 
    while(node)
    {
        node->GetData()->Translate(dx,dy);
        node = node->GetNext();
    }
	if (m_bounded) 
	{
		m_bounds.x += dx;
		m_bounds.y += dy;
	}
}

// ----------------------------------------------------------------------------
// SetGreyedOut - set the greyout member and cache grey versions of everything
// if greyout is true
// ----------------------------------------------------------------------------
void pdcObject::SetGreyedOut(bool greyout) 
{
	m_greyedout=greyout;
	if (greyout)
	{
		pdcOpList::Node *node = m_oplist.GetFirst(); 
        pdcOp *obj;
		while(node)
		{

			obj = node->GetData();
            obj->CacheGrey();
			node = node->GetNext();
		}
	}
}

// ============================================================================
// wxPseudoDC implementation
// ============================================================================

// ----------------------------------------------------------------------------
// Destructor
// ----------------------------------------------------------------------------
wxPseudoDC::~wxPseudoDC()
{
    // delete all the nodes in the list
	RemoveAll();
	
}

// ----------------------------------------------------------------------------
// ClearAll - remove all nodes from list
// ----------------------------------------------------------------------------
void wxPseudoDC::RemoveAll(void)
{
    m_objectlist.Clear();
    m_currId = -1;
	m_lastObjNode = NULL;
}

// ----------------------------------------------------------------------------
// GetLen - return the number of operations in the current op list
// ----------------------------------------------------------------------------
int wxPseudoDC::GetLen(void)
{
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    int len=0;
    while (pt) 
    {
        len += pt->GetData()->GetLen();
        pt = pt->GetNext();
    }
    return len;
}

// ----------------------------------------------------------------------------
// FindObjNode - find and return an object node by id.  If node doesn't exist
//               and create is true then create one and return it.  Otherwise
//               return NULL.
// ----------------------------------------------------------------------------
pdcObjectList::Node *wxPseudoDC::FindObjNode(int id, bool create)
{
    // see if last operation was for same id
    if (m_lastObjNode && m_lastObjNode->GetData()->GetId() == id)
        return m_lastObjNode;
    // if not then search for it
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    while (pt) 
    {
        if (pt->GetData()->GetId() == id)
		{
        
            // cache this node for future operations
            m_lastObjNode = pt;
            return pt;
        }
        pt = pt->GetNext();
    }
    // if create then create and return a new node
    if (create) 
    {
        // cache this node for future operations
        m_lastObjNode = m_objectlist.Append(new pdcObject(id));
        return m_lastObjNode;
    }
    // otherwise just return NULL
    return NULL;
}

// ----------------------------------------------------------------------------
// AddToList - Add a node to the list at the end (preserve draw order)
// ----------------------------------------------------------------------------
void wxPseudoDC::AddToList(pdcOp *newOp)
{
    pdcObjectList::Node *pt = FindObjNode(m_currId, true);
    pt->GetData()->AddOp(newOp);
}

// ----------------------------------------------------------------------------
// ClearID - remove all the operations associated with a single ID
// ----------------------------------------------------------------------------
void wxPseudoDC::ClearId(int id)
{
    pdcObjectList::Node *pt = FindObjNode(id);
    if (pt) pt->GetData()->Clear();
}

// ----------------------------------------------------------------------------
// RemoveID - Remove the object node (and all operations) associated with an id
// ----------------------------------------------------------------------------
void wxPseudoDC::RemoveId(int id)
{
    pdcObjectList::Node *pt = FindObjNode(id);
    if (pt) 
    {
        if (m_lastObjNode == pt)
            m_lastObjNode = NULL;
        m_objectlist.DeleteNode(pt);
    }
}

// ----------------------------------------------------------------------------
// SetIdBounds - Set the bounding rect for a given id
// ----------------------------------------------------------------------------
void wxPseudoDC::SetIdBounds(int id, wxRect& rect)
{
    pdcObjectList::Node *pt = FindObjNode(id, true);
    pt->GetData()->SetBounds(rect);
}

// ----------------------------------------------------------------------------
// GetIdBounds - Get the bounding rect for a given id
// ----------------------------------------------------------------------------
void wxPseudoDC::GetIdBounds(int id, wxRect& rect)
{
    pdcObjectList::Node *pt = FindObjNode(id);
	if (pt && pt->GetData()->IsBounded())
		rect = pt->GetData()->GetBounds();
	else
		rect.x = rect.y = rect.width = rect.height = 0;
}

// ----------------------------------------------------------------------------
// TranslateId - Translate all the operations of a single id
// ----------------------------------------------------------------------------
void wxPseudoDC::TranslateId(int id, wxCoord dx, wxCoord dy)
{
    pdcObjectList::Node *pt = FindObjNode(id);
    if (pt) pt->GetData()->Translate(dx,dy);
}

// ----------------------------------------------------------------------------
// DrawIdToDC - Draw a specific id to the dc passed in
// ----------------------------------------------------------------------------
void wxPseudoDC::DrawIdToDC(int id, wxDC *dc)
{
    pdcObjectList::Node *pt = FindObjNode(id);
    if (pt) pt->GetData()->DrawToDC(dc);
}

// ----------------------------------------------------------------------------
// SetIdGreyedOut - Set the greyedout member of id
// ----------------------------------------------------------------------------
void wxPseudoDC::SetIdGreyedOut(int id, bool greyout)
{
    pdcObjectList::Node *pt = FindObjNode(id);
    if (pt) pt->GetData()->SetGreyedOut(greyout);
}

// ----------------------------------------------------------------------------
// GetIdGreyedOut - Get the greyedout member of id
// ----------------------------------------------------------------------------
bool wxPseudoDC::GetIdGreyedOut(int id)
{
    pdcObjectList::Node *pt = FindObjNode(id);
    if (pt) return pt->GetData()->GetGreyedOut();
	else return false;
}

// ----------------------------------------------------------------------------
// FindObjectsByBBox - Return a list of all the ids whose bounding boxes
//                     contain (x,y)
// ----------------------------------------------------------------------------
PyObject *wxPseudoDC::FindObjectsByBBox(wxCoord x, wxCoord y)
{
    //wxPyBlock_t blocked = wxPyBeginBlockThreads();
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    pdcObject *obj;
    PyObject* pyList = NULL;
    pyList = PyList_New(0);
    wxRect r;
    while (pt) 
    {
        obj = pt->GetData();
        r = obj->GetBounds();
        if (obj->IsBounded() && r.Contains(x,y))
        {
            PyObject* pyObj = PyInt_FromLong((long)obj->GetId());
            PyList_Insert(pyList, 0, pyObj);
            Py_DECREF(pyObj);
        }
        pt = pt->GetNext();
    }
    //wxPyEndBlockThreads(blocked);
    return pyList;
}

// ----------------------------------------------------------------------------
// FindObjects - Return a list of all the ids that draw to (x,y)
// ----------------------------------------------------------------------------
PyObject *wxPseudoDC::FindObjects(wxCoord x, wxCoord y, 
                                  wxCoord radius, const wxColor& bg)
{
    //wxPyBlock_t blocked = wxPyBeginBlockThreads();
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    pdcObject *obj;
    PyObject* pyList = NULL;
    pyList = PyList_New(0);
    wxBrush bgbrush(bg);
    wxPen bgpen(bg);
    // special case radius = 0
    if (radius == 0)
    {
        wxBitmap bmp(4,4,24);
        wxMemoryDC memdc;
        wxColor pix;
        wxRect viewrect(x-2,y-2,4,4);
        // setup the memdc for rendering
        memdc.SelectObject(bmp);
        memdc.SetBackground(bgbrush);
        memdc.Clear();
        memdc.SetDeviceOrigin(2-x,2-y);
        while (pt) 
        {
            obj = pt->GetData();
            if (obj->IsBounded() && obj->GetBounds().Contains(x,y))
            {
                // start clean
                memdc.SetBrush(bgbrush);
                memdc.SetPen(bgpen);
                memdc.DrawRectangle(viewrect);
                // draw the object
                obj->DrawToDC(&memdc);
                memdc.GetPixel(x,y,&pix);
                // clear and update rgn2
                if (pix != bg)
                {
                    PyObject* pyObj = PyInt_FromLong((long)obj->GetId());
                    PyList_Insert(pyList, 0, pyObj);
                    Py_DECREF(pyObj);
                }
            }
            pt = pt->GetNext();
        }
        memdc.SelectObject(wxNullBitmap);
    }
    else
    {
        wxRect viewrect(x-radius,y-radius,2*radius,2*radius);
        wxBitmap maskbmp(2*radius,2*radius,24);
        wxMemoryDC maskdc;
        // create bitmap with circle for masking
        maskdc.SelectObject(maskbmp);
        maskdc.SetBackground(*wxBLACK_BRUSH);
        maskdc.Clear();
        maskdc.SetBrush(*wxWHITE_BRUSH);
        maskdc.SetPen(*wxWHITE_PEN);
        maskdc.DrawCircle(radius,radius,radius);
        // now setup a memdc for rendering our object
        wxBitmap bmp(2*radius,2*radius,24);
        wxMemoryDC memdc;
        memdc.SelectObject(bmp);
        // set the origin so (x,y) is in the bmp center
        memdc.SetDeviceOrigin(radius-x,radius-y);
        // a region will be used to see if the result is empty
        wxRegion rgn2;
        while (pt) 
        {
            obj = pt->GetData();
            if (obj->IsBounded() && viewrect.Intersects(obj->GetBounds()))
            {
                // start clean
                //memdc.Clear();
                memdc.SetBrush(bgbrush);
                memdc.SetPen(bgpen);
                memdc.DrawRectangle(viewrect);
                // draw the object
                obj->DrawToDC(&memdc);
                // remove background color
                memdc.SetLogicalFunction(wxXOR);
                memdc.SetBrush(bgbrush);
                memdc.SetPen(bgpen);
                memdc.DrawRectangle(viewrect);
                memdc.SetLogicalFunction(wxCOPY);
#ifdef __WXMAC__
                // wxAND is not supported on wxMac, but it doesn't seem to
                // hurt anything to use wxCOPY instead...
                memdc.Blit(x-radius,y-radius,2*radius,2*radius,&maskdc,0,0,wxCOPY);
#else
                // AND with circle bitmap
                memdc.Blit(x-radius,y-radius,2*radius,2*radius,&maskdc,0,0,wxAND);
#endif
                // clear and update rgn2
                memdc.SelectObject(wxNullBitmap);
                rgn2.Clear();
                rgn2.Union(bmp, *wxBLACK);
                //rgn2.Intersect(rgn);
                memdc.SelectObject(bmp);
                if (!rgn2.IsEmpty())
                {
                    PyObject* pyObj = PyInt_FromLong((long)obj->GetId());
                    PyList_Insert(pyList, 0, pyObj);
                    Py_DECREF(pyObj);
                }
            }
            pt = pt->GetNext();
        }
        maskdc.SelectObject(wxNullBitmap);
        memdc.SelectObject(wxNullBitmap);
    }
    //wxPyEndBlockThreads(blocked);
    return pyList;
}

// ----------------------------------------------------------------------------
// DrawToDCClipped - play back the op list to the DC but clip any objects
//                   known to be not in rect.  This is a coarse level of 
//                   clipping to speed things up when lots of objects are off 
//                   screen and doesn't affect the dc level clipping
// ----------------------------------------------------------------------------
void wxPseudoDC::DrawToDCClipped(wxDC *dc, const wxRect& rect)
{
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    pdcObject *obj;
    while (pt) 
    {
        obj = pt->GetData();
        if (!obj->IsBounded() || rect.Intersects(obj->GetBounds()))
            obj->DrawToDC(dc);
        pt = pt->GetNext();
    }
}
void wxPseudoDC::DrawToDCClippedRgn(wxDC *dc, const wxRegion& region)
{
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    pdcObject *obj;
    while (pt) 
    {
        obj = pt->GetData();
        if (!obj->IsBounded() || 
		    (region.Contains(obj->GetBounds()) != wxOutRegion))
            obj->DrawToDC(dc);
        pt = pt->GetNext();
    }
}

// ----------------------------------------------------------------------------
// DrawToDC - play back the op list to the DC 
// ----------------------------------------------------------------------------
void wxPseudoDC::DrawToDC(wxDC *dc)
{
    pdcObjectList::Node *pt = m_objectlist.GetFirst();
    while (pt) 
    {
        pt->GetData()->DrawToDC(dc);
        pt = pt->GetNext();
    }
}
Commit	Line	Data
7e664d85 RD	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: common/pseudodc.cpp
	3	// Purpose: Implementation of the wxPseudoDC Class
	4	// Author: Paul Lanier
	5	// Modified by:
	6	// Created: 05/25/06
	7	// RCS-ID: $Id$
	8	// Copyright: (c) wxWidgets team
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// For compilers that support precompilation, includes "wx.h".
6f67d537	13	//include "wx/wxprec.h"
7e664d85	14
6f67d537 RD	15	#undef DEBUG
	16	#include <Python.h>
	17	#include "wx/wxPython/wxPython.h"
7e664d85	18	#include "wx/wxPython/pseudodc.h"
7e664d85 RD	19
	20	// wxList based class definitions
	21	#include <wx/listimpl.cpp>
	22	WX_DEFINE_LIST(pdcOpList);
	23	WX_DEFINE_LIST(pdcObjectList);
	24
6f67d537 RD	25	//----------------------------------------------------------------------------
	26	// Helper functions used for drawing greyed out versions of objects
	27	//----------------------------------------------------------------------------
	28	wxColour &MakeColourGrey(const wxColour &c)
	29	{
	30	static wxColour rval;
	31	rval.Set(byte((230-c.Red())*0.7+c.Red()),
	32	byte((230-c.Green())*0.7+c.Green()),
	33	byte((230-c.Blue())*0.7+c.Blue()));
	34	return rval;
	35	}
	36	wxBrush &GetGreyBrush(wxBrush &brush)
	37	{
	38	static wxBrush b;
	39	wxColour c;
	40	b = brush;
	41	c = MakeColourGrey(brush.GetColour());
	42	b.SetColour(c);
	43	return b;
	44	}
	45
	46	wxPen &GetGreyPen(wxPen &pen)
	47	{
	48	static wxPen p;
	49	wxColour c;
	50	p = pen;
	51	c = MakeColourGrey(pen.GetColour());
	52	p.SetColour(c);
	53	return p;
	54	}
	55
	56	void GreyOutImage(wxImage &img)
	57	{
	58	unsigned char *data = img.GetData();
	59	unsigned char r,g,b;
	60	unsigned char mr,mg,mb;
	61	int i, tst;
	62	int len = img.GetHeight()img.GetWidth()3;
	63	if (img.HasMask())
	64	{
	65	mr = img.GetMaskRed();
	66	mg = img.GetMaskGreen();
	67	mb = img.GetMaskBlue();
	68	}
	69	tst=0;
	70	for (i=0;i<len;i+=3)
	71	{
	72	r=data[i]; g=data[i+1]; b=data[i+2];
	73	if (!img.HasMask() \|\|
	74	r!=mr \|\| g!=mg \|\| b!=mb)
	75	{
	76	if (!tst)
	77	{
	78	tst=1;
	79	}
	80	r = (unsigned char)((230.0-r)*0.7+r);
	81	g = (unsigned char)((230.0-g)*0.7+g);
	82	b = (unsigned char)((230.0-b)*0.7+b);
	83	data[i]=r; data[i+1]=g; data[i+2]=b;
	84	}
	85	}
	86	}
	87
	88	wxIcon &GetGreyIcon(wxIcon &icon)
89	{
90	wxBitmap bmp;
91	bmp.CopyFromIcon(icon);
92	wxImage img = bmp.ConvertToImage();
93	GreyOutImage(img);
94	wxBitmap bmp2(img,32);
95	static wxIcon rval;
96	rval.CopyFromBitmap(bmp2);
97	return rval;
98	}
99
100	wxBitmap &GetGreyBitmap(wxBitmap &bmp)
101	{
102	wxImage img = bmp.ConvertToImage();
103	GreyOutImage(img);
104	static wxBitmap rval(img,32);
105	return rval;
106	}
107
7e664d85 RD	108	// ============================================================================
	109	// various pdcOp class implementation methods
	110	// ============================================================================
	111
	112	// ----------------------------------------------------------------------------
	113	// pdcDrawPolyPolygonOp constructor
	114	// ----------------------------------------------------------------------------
	115	pdcDrawPolyPolygonOp::pdcDrawPolyPolygonOp(int n, int count[], wxPoint points[],
	116	wxCoord xoffset, wxCoord yoffset, int fillStyle)
	117	{
	118	m_n=n; m_xoffset=xoffset; m_yoffset=yoffset; m_fillStyle=fillStyle;
	119	int total_n=0;
	120	if (n)
	121	{
	122	m_count = new int[n];
	123	for(int i=0; i<n; i++)
	124	{
	125	total_n+=count[i];
	126	m_count[i]=count[i];
	127	}
	128	if (total_n)
	129	{
	130	m_points = new wxPoint[total_n];
	131	for(int j=0; j<total_n; j++)
	132	m_points[j] = points[j];
	133	}
	134	else m_points=NULL;
	135	}
	136	else
	137	{
	138	m_points=NULL;
	139	m_count=NULL;
	140	}
	141	m_totaln = total_n;
	142	}
	143
	144	// ----------------------------------------------------------------------------
	145	// pdcDrawPolyPolygonOp destructor
	146	// ----------------------------------------------------------------------------
	147	pdcDrawPolyPolygonOp::~pdcDrawPolyPolygonOp()
	148	{
	149	if (m_points) delete m_points;
	150	if (m_count) delete m_count;
	151	m_points=NULL;
	152	m_count=NULL;
	153	}
	154
	155	// ----------------------------------------------------------------------------
	156	// pdcDrawLinesOp constructor
	157	// ----------------------------------------------------------------------------
	158	pdcDrawLinesOp::pdcDrawLinesOp(int n, wxPoint points[],
	159	wxCoord xoffset, wxCoord yoffset)
	160	{
	161	m_n=n; m_xoffset=xoffset; m_yoffset=yoffset;
	162	if (n)
	163	{
	164	m_points = new wxPoint[n];
	165	for (int i=0; i<n; i++)
	166	m_points[i] = points[i];
	167	}
	168	else m_points=NULL;
	169	}
	170
	171	// ----------------------------------------------------------------------------
172	// pdcDrawLinesOp destructor
173	// ----------------------------------------------------------------------------
174	pdcDrawLinesOp::~pdcDrawLinesOp()
175	{
176	if (m_points) delete m_points;
177	m_points=NULL;
178	}
179
180	// ----------------------------------------------------------------------------
181	// pdcDrawPolygonOp constructor
182	// ----------------------------------------------------------------------------
183	pdcDrawPolygonOp::pdcDrawPolygonOp(int n, wxPoint points[],
184	wxCoord xoffset, wxCoord yoffset, int fillStyle)
185	{
186	m_n=n; m_xoffset=xoffset; m_yoffset=yoffset; m_fillStyle=fillStyle;
187	if (n)
188	{
189	m_points = new wxPoint[n];
190	for (int i=0; i<n; i++)
191	m_points[i] = points[i];
192	}
193	else m_points=NULL;
194	}
195
196	// ----------------------------------------------------------------------------
197	// pdcDrawPolygonOp destructor
198	// ----------------------------------------------------------------------------
199	pdcDrawPolygonOp::~pdcDrawPolygonOp()
200	{
201	if (m_points) delete m_points;
202	m_points=NULL;
203	}
204
205	#if wxUSE_SPLINES
206	// ----------------------------------------------------------------------------
207	// pdcDrawSplineOp constructor
208	// ----------------------------------------------------------------------------
209	pdcDrawSplineOp::pdcDrawSplineOp(int n, wxPoint points[])
210	{
211	m_n=n;
212	if (n)
213	{
214	m_points = new wxPoint[n];
215	for(int i=0; i<n; i++)
216	m_points[i] = points[i];
217	}
218	else m_points=NULL;
219	}
220
221	// ----------------------------------------------------------------------------
222	// pdcDrawSplineOp destructor
223	// ----------------------------------------------------------------------------
224	pdcDrawSplineOp::~pdcDrawSplineOp()
225	{
226	if (m_points) delete m_points;
227	m_points=NULL;
228	}
229	#endif // wxUSE_SPLINES
230
231	// ============================================================================
232	// pdcObject implementation
233	// ============================================================================
234	// ----------------------------------------------------------------------------
235	// DrawToDC - play back the op list to the DC
236	// ----------------------------------------------------------------------------
237	void pdcObject::DrawToDC(wxDC *dc)
238	{
239	pdcOpList::Node *node = m_oplist.GetFirst();
240	while(node)
241	{
6f67d537	242	node->GetData()->DrawToDC(dc, m_greyedout);
7e664d85 RD	243	node = node->GetNext();
	244	}
	245	}
	246
	247	// ----------------------------------------------------------------------------
	248	// Translate - translate all the operations by some dx,dy
	249	// ----------------------------------------------------------------------------
	250	void pdcObject::Translate(wxCoord dx, wxCoord dy)
	251	{
	252	pdcOpList::Node *node = m_oplist.GetFirst();
	253	while(node)
	254	{
	255	node->GetData()->Translate(dx,dy);
	256	node = node->GetNext();
	257	}
	258	if (m_bounded)
	259	{
	260	m_bounds.x += dx;
	261	m_bounds.y += dy;
	262	}
	263	}
	264
6f67d537 RD	265	// ----------------------------------------------------------------------------
	266	// SetGreyedOut - set the greyout member and cache grey versions of everything
	267	// if greyout is true
	268	// ----------------------------------------------------------------------------
	269	void pdcObject::SetGreyedOut(bool greyout)
	270	{
	271	m_greyedout=greyout;
	272	if (greyout)
	273	{
	274	pdcOpList::Node *node = m_oplist.GetFirst();
	275	pdcOp *obj;
	276	while(node)
	277	{
	278
	279	obj = node->GetData();
	280	obj->CacheGrey();
	281	node = node->GetNext();
	282	}
	283	}
	284	}
	285
7e664d85 RD	286	// ============================================================================
	287	// wxPseudoDC implementation
	288	// ============================================================================
	289
	290	// ----------------------------------------------------------------------------
	291	// Destructor
	292	// ----------------------------------------------------------------------------
	293	wxPseudoDC::~wxPseudoDC()
	294	{
	295	// delete all the nodes in the list
	296	RemoveAll();
	297
	298	}
	299
	300	// ----------------------------------------------------------------------------
	301	// ClearAll - remove all nodes from list
	302	// ----------------------------------------------------------------------------
	303	void wxPseudoDC::RemoveAll(void)
	304	{
	305	m_objectlist.Clear();
	306	m_currId = -1;
	307	m_lastObjNode = NULL;
	308	}
	309
	310	// ----------------------------------------------------------------------------
	311	// GetLen - return the number of operations in the current op list
	312	// ----------------------------------------------------------------------------
	313	int wxPseudoDC::GetLen(void)
	314	{
	315	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	316	int len=0;
	317	while (pt)
	318	{
	319	len += pt->GetData()->GetLen();
	320	pt = pt->GetNext();
	321	}
	322	return len;
	323	}
	324
	325	// ----------------------------------------------------------------------------
	326	// FindObjNode - find and return an object node by id. If node doesn't exist
	327	// and create is true then create one and return it. Otherwise
	328	// return NULL.
	329	// ----------------------------------------------------------------------------
	330	pdcObjectList::Node *wxPseudoDC::FindObjNode(int id, bool create)
	331	{
	332	// see if last operation was for same id
	333	if (m_lastObjNode && m_lastObjNode->GetData()->GetId() == id)
	334	return m_lastObjNode;
	335	// if not then search for it
	336	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	337	while (pt)
	338	{
	339	if (pt->GetData()->GetId() == id)
	340	{
	341
	342	// cache this node for future operations
	343	m_lastObjNode = pt;
	344	return pt;
	345	}
	346	pt = pt->GetNext();
	347	}
	348	// if create then create and return a new node
	349	if (create)
350	{
351	// cache this node for future operations
352	m_lastObjNode = m_objectlist.Append(new pdcObject(id));
353	return m_lastObjNode;
354	}
355	// otherwise just return NULL
356	return NULL;
357	}
358
359	// ----------------------------------------------------------------------------
360	// AddToList - Add a node to the list at the end (preserve draw order)
361	// ----------------------------------------------------------------------------
362	void wxPseudoDC::AddToList(pdcOp *newOp)
363	{
364	pdcObjectList::Node *pt = FindObjNode(m_currId, true);
365	pt->GetData()->AddOp(newOp);
366	}
367
368	// ----------------------------------------------------------------------------
369	// ClearID - remove all the operations associated with a single ID
370	// ----------------------------------------------------------------------------
371	void wxPseudoDC::ClearId(int id)
372	{
373	pdcObjectList::Node *pt = FindObjNode(id);
374	if (pt) pt->GetData()->Clear();
375	}
376
377	// ----------------------------------------------------------------------------
378	// RemoveID - Remove the object node (and all operations) associated with an id
379	// ----------------------------------------------------------------------------
380	void wxPseudoDC::RemoveId(int id)
381	{
382	pdcObjectList::Node *pt = FindObjNode(id);
383	if (pt)
384	{
385	if (m_lastObjNode == pt)
386	m_lastObjNode = NULL;
387	m_objectlist.DeleteNode(pt);
388	}
389	}
390
391	// ----------------------------------------------------------------------------
392	// SetIdBounds - Set the bounding rect for a given id
393	// ----------------------------------------------------------------------------
394	void wxPseudoDC::SetIdBounds(int id, wxRect& rect)
395	{
396	pdcObjectList::Node *pt = FindObjNode(id, true);
397	pt->GetData()->SetBounds(rect);
398	}
399
400	// ----------------------------------------------------------------------------
401	// GetIdBounds - Get the bounding rect for a given id
402	// ----------------------------------------------------------------------------
403	void wxPseudoDC::GetIdBounds(int id, wxRect& rect)
404	{
405	pdcObjectList::Node *pt = FindObjNode(id);
406	if (pt && pt->GetData()->IsBounded())
407	rect = pt->GetData()->GetBounds();
408	else
409	rect.x = rect.y = rect.width = rect.height = 0;
410	}
411
412	// ----------------------------------------------------------------------------
413	// TranslateId - Translate all the operations of a single id
414	// ----------------------------------------------------------------------------
415	void wxPseudoDC::TranslateId(int id, wxCoord dx, wxCoord dy)
416	{
417	pdcObjectList::Node *pt = FindObjNode(id);
418	if (pt) pt->GetData()->Translate(dx,dy);
419	}
420
421	// ----------------------------------------------------------------------------
422	// DrawIdToDC - Draw a specific id to the dc passed in
423	// ----------------------------------------------------------------------------
424	void wxPseudoDC::DrawIdToDC(int id, wxDC *dc)
425	{
426	pdcObjectList::Node *pt = FindObjNode(id);
427	if (pt) pt->GetData()->DrawToDC(dc);
428	}
429
6f67d537 RD	430	// ----------------------------------------------------------------------------
	431	// SetIdGreyedOut - Set the greyedout member of id
	432	// ----------------------------------------------------------------------------
	433	void wxPseudoDC::SetIdGreyedOut(int id, bool greyout)
	434	{
	435	pdcObjectList::Node *pt = FindObjNode(id);
	436	if (pt) pt->GetData()->SetGreyedOut(greyout);
	437	}
	438
	439	// ----------------------------------------------------------------------------
	440	// GetIdGreyedOut - Get the greyedout member of id
	441	// ----------------------------------------------------------------------------
	442	bool wxPseudoDC::GetIdGreyedOut(int id)
	443	{
	444	pdcObjectList::Node *pt = FindObjNode(id);
	445	if (pt) return pt->GetData()->GetGreyedOut();
	446	else return false;
	447	}
	448
	449	// ----------------------------------------------------------------------------
	450	// FindObjectsByBBox - Return a list of all the ids whose bounding boxes
	451	// contain (x,y)
	452	// ----------------------------------------------------------------------------
	453	PyObject *wxPseudoDC::FindObjectsByBBox(wxCoord x, wxCoord y)
	454	{
	455	//wxPyBlock_t blocked = wxPyBeginBlockThreads();
	456	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	457	pdcObject *obj;
	458	PyObject* pyList = NULL;
	459	pyList = PyList_New(0);
	460	wxRect r;
	461	while (pt)
	462	{
	463	obj = pt->GetData();
	464	r = obj->GetBounds();
	465	if (obj->IsBounded() && r.Contains(x,y))
	466	{
	467	PyObject* pyObj = PyInt_FromLong((long)obj->GetId());
	468	PyList_Insert(pyList, 0, pyObj);
	469	Py_DECREF(pyObj);
	470	}
	471	pt = pt->GetNext();
	472	}
	473	//wxPyEndBlockThreads(blocked);
	474	return pyList;
	475	}
	476
	477	// ----------------------------------------------------------------------------
	478	// FindObjects - Return a list of all the ids that draw to (x,y)
	479	// ----------------------------------------------------------------------------
	480	PyObject *wxPseudoDC::FindObjects(wxCoord x, wxCoord y,
	481	wxCoord radius, const wxColor& bg)
	482	{
	483	//wxPyBlock_t blocked = wxPyBeginBlockThreads();
	484	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	485	pdcObject *obj;
	486	PyObject* pyList = NULL;
	487	pyList = PyList_New(0);
	488	wxBrush bgbrush(bg);
	489	wxPen bgpen(bg);
	490	// special case radius = 0
	491	if (radius == 0)
	492	{
	493	wxBitmap bmp(4,4,24);
494	wxMemoryDC memdc;
495	wxColor pix;
496	wxRect viewrect(x-2,y-2,4,4);
497	// setup the memdc for rendering
498	memdc.SelectObject(bmp);
499	memdc.SetBackground(bgbrush);
500	memdc.Clear();
501	memdc.SetDeviceOrigin(2-x,2-y);
502	while (pt)
503	{
504	obj = pt->GetData();
505	if (obj->IsBounded() && obj->GetBounds().Contains(x,y))
506	{
507	// start clean
508	memdc.SetBrush(bgbrush);
509	memdc.SetPen(bgpen);
510	memdc.DrawRectangle(viewrect);
511	// draw the object
512	obj->DrawToDC(&memdc);
513	memdc.GetPixel(x,y,&pix);
514	// clear and update rgn2
515	if (pix != bg)
516	{
517	PyObject* pyObj = PyInt_FromLong((long)obj->GetId());
518	PyList_Insert(pyList, 0, pyObj);
519	Py_DECREF(pyObj);
520	}
521	}
522	pt = pt->GetNext();
523	}
524	memdc.SelectObject(wxNullBitmap);
525	}
526	else
527	{
528	wxRect viewrect(x-radius,y-radius,2radius,2radius);
529	wxBitmap maskbmp(2radius,2radius,24);
530	wxMemoryDC maskdc;
531	// create bitmap with circle for masking
532	maskdc.SelectObject(maskbmp);
533	maskdc.SetBackground(*wxBLACK_BRUSH);
534	maskdc.Clear();
535	maskdc.SetBrush(*wxWHITE_BRUSH);
536	maskdc.SetPen(*wxWHITE_PEN);
537	maskdc.DrawCircle(radius,radius,radius);
538	// now setup a memdc for rendering our object
539	wxBitmap bmp(2radius,2radius,24);
540	wxMemoryDC memdc;
541	memdc.SelectObject(bmp);
542	// set the origin so (x,y) is in the bmp center
543	memdc.SetDeviceOrigin(radius-x,radius-y);
544	// a region will be used to see if the result is empty
545	wxRegion rgn2;
546	while (pt)
547	{
548	obj = pt->GetData();
549	if (obj->IsBounded() && viewrect.Intersects(obj->GetBounds()))
550	{
551	// start clean
552	//memdc.Clear();
553	memdc.SetBrush(bgbrush);
554	memdc.SetPen(bgpen);
555	memdc.DrawRectangle(viewrect);
556	// draw the object
557	obj->DrawToDC(&memdc);
558	// remove background color
559	memdc.SetLogicalFunction(wxXOR);
560	memdc.SetBrush(bgbrush);
561	memdc.SetPen(bgpen);
562	memdc.DrawRectangle(viewrect);
563	memdc.SetLogicalFunction(wxCOPY);
6d44273e RD	564	#ifdef __WXMAC__
	565	// wxAND is not supported on wxMac, but it doesn't seem to
	566	// hurt anything to use wxCOPY instead...
	567	memdc.Blit(x-radius,y-radius,2radius,2radius,&maskdc,0,0,wxCOPY);
	568	#else
6f67d537 RD	569	// AND with circle bitmap
6f67d537 RD	570	memdc.Blit(x-radius,y-radius,2radius,2radius,&maskdc,0,0,wxAND);
6d44273e	571	#endif
6f67d537 RD	572	// clear and update rgn2
	573	memdc.SelectObject(wxNullBitmap);
	574	rgn2.Clear();
	575	rgn2.Union(bmp, *wxBLACK);
	576	//rgn2.Intersect(rgn);
	577	memdc.SelectObject(bmp);
	578	if (!rgn2.IsEmpty())
	579	{
	580	PyObject* pyObj = PyInt_FromLong((long)obj->GetId());
	581	PyList_Insert(pyList, 0, pyObj);
	582	Py_DECREF(pyObj);
	583	}
	584	}
	585	pt = pt->GetNext();
	586	}
	587	maskdc.SelectObject(wxNullBitmap);
	588	memdc.SelectObject(wxNullBitmap);
	589	}
	590	//wxPyEndBlockThreads(blocked);
	591	return pyList;
	592	}
	593
7e664d85 RD	594	// ----------------------------------------------------------------------------
	595	// DrawToDCClipped - play back the op list to the DC but clip any objects
	596	// known to be not in rect. This is a coarse level of
	597	// clipping to speed things up when lots of objects are off
	598	// screen and doesn't affect the dc level clipping
	599	// ----------------------------------------------------------------------------
	600	void wxPseudoDC::DrawToDCClipped(wxDC *dc, const wxRect& rect)
	601	{
	602	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	603	pdcObject *obj;
	604	while (pt)
	605	{
	606	obj = pt->GetData();
	607	if (!obj->IsBounded() \|\| rect.Intersects(obj->GetBounds()))
	608	obj->DrawToDC(dc);
	609	pt = pt->GetNext();
	610	}
	611	}
	612	void wxPseudoDC::DrawToDCClippedRgn(wxDC *dc, const wxRegion& region)
	613	{
	614	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	615	pdcObject *obj;
	616	while (pt)
	617	{
	618	obj = pt->GetData();
	619	if (!obj->IsBounded() \|\|
	620	(region.Contains(obj->GetBounds()) != wxOutRegion))
	621	obj->DrawToDC(dc);
	622	pt = pt->GetNext();
	623	}
	624	}
	625
	626	// ----------------------------------------------------------------------------
	627	// DrawToDC - play back the op list to the DC
	628	// ----------------------------------------------------------------------------
	629	void wxPseudoDC::DrawToDC(wxDC *dc)
	630	{
	631	pdcObjectList::Node *pt = m_objectlist.GetFirst();
	632	while (pt)
	633	{
	634	pt->GetData()->DrawToDC(dc);
	635	pt = pt->GetNext();
	636	}
	637	}
	638