[wxWidgets.git] / src / common / prntbase.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        prntbase.cpp
// Purpose:     Printing framework base class implementation
// Author:      Julian Smart
// Modified by:
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "prntbase.h"
#endif

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

#ifdef __BORLANDC__
#pragma hdrstop
#endif

// #define __GOOD_COMPILER__

#include "wx/defs.h"

#ifndef WX_PRECOMP
#include "wx/utils.h"
#include "wx/dc.h"
#include "wx/app.h"
#include "wx/msgdlg.h"
#include "wx/layout.h"
#include "wx/choice.h"
#include "wx/button.h"
#include "wx/settings.h"
#include "wx/dcmemory.h"
#include "wx/stattext.h"
#include "wx/intl.h"
#endif

#include "wx/prntbase.h"
#include "wx/dcprint.h"
#include "wx/printdlg.h"

#include <stdlib.h>
#include <string.h>

#ifdef __WINDOWS__
#include <windows.h>
#include <commdlg.h>

// Clash with Windows header files
#ifdef StartDoc
#undef StartDoc
#endif

#ifndef __WIN32__
#include <print.h>
#endif

#if !defined(APIENTRY)	// NT defines APIENTRY, 3.x not
#define APIENTRY FAR PASCAL
#endif
 
#ifdef __WIN32__
#define _EXPORT /**/
#else
#define _EXPORT _export
typedef signed short int SHORT ;
#endif
 
#if !defined(__WIN32__)	// 3.x uses FARPROC for dialogs
#define DLGPROC FARPROC
#endif

LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
#endif
 // End __WINDOWS__

#if !USE_SHARED_LIBRARY
IMPLEMENT_CLASS(wxPrinterBase, wxObject)
IMPLEMENT_ABSTRACT_CLASS(wxPrintout, wxObject)
IMPLEMENT_CLASS(wxPreviewCanvas, wxWindow)
IMPLEMENT_CLASS(wxPreviewControlBar, wxWindow)
IMPLEMENT_CLASS(wxPreviewFrame, wxFrame)
IMPLEMENT_CLASS(wxPrintPreviewBase, wxObject)

BEGIN_EVENT_TABLE(wxPrintAbortDialog, wxDialog)
	EVT_BUTTON(wxID_CANCEL, wxPrintAbortDialog::OnCancel)
END_EVENT_TABLE()

BEGIN_EVENT_TABLE(wxPreviewCanvas, wxScrolledWindow)
    EVT_PAINT(wxPreviewCanvas::OnPaint)
    EVT_SYS_COLOUR_CHANGED(wxPreviewCanvas::OnSysColourChanged)
END_EVENT_TABLE()
#endif

/*
 * Printer
 */
 
wxPrinterBase::wxPrinterBase(wxPrintData *data)
{
  currentPrintout = NULL;
  abortWindow = NULL;
  abortIt = FALSE;
  if (data)
    printData = (*data);
}

wxWindow *wxPrinterBase::abortWindow = NULL;
bool wxPrinterBase::abortIt = FALSE;

wxPrinterBase::~wxPrinterBase(void)
{
}

void wxPrintAbortDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
{
  wxPrinterBase::abortIt = TRUE;
  wxPrinterBase::abortWindow->Show(FALSE);
  wxPrinterBase::abortWindow->Close(TRUE);
  wxPrinterBase::abortWindow = NULL;
}

wxWindow *wxPrinterBase::CreateAbortWindow(wxWindow *parent, wxPrintout *WXUNUSED(printout))
{
  wxPrintAbortDialog *dialog = new wxPrintAbortDialog(parent, _("Printing"), wxPoint(0, 0), wxSize(400, 400));
  (void) new wxStaticText(dialog, -1, _("Please wait..."), wxPoint(5, 5));

  wxButton *button = new wxButton(dialog, wxID_CANCEL, _("Cancel"), wxPoint(5, 30));

  dialog->Fit();
  button->Centre(wxHORIZONTAL);

  dialog->Centre();
  return dialog;
}

void wxPrinterBase::ReportError(wxWindow *parent, wxPrintout *WXUNUSED(printout), char *message)
{
  wxMessageBox(message, "Printing Error", wxOK, parent);
}

/*
 * Printout class
 */
 
wxPrintout::wxPrintout(char *title)
{
  printoutTitle = title ? copystring(title) : (char*)NULL;
  printoutDC = NULL;
  pageWidthMM = 0;
  pageHeightMM = 0;
  pageWidthPixels = 0;
  pageHeightPixels = 0;
  PPIScreenX = 0;
  PPIScreenY = 0;
  PPIPrinterX = 0;
  PPIPrinterY = 0;
  isPreview = FALSE;
}

wxPrintout::~wxPrintout(void)
{
  if (printoutTitle)
    delete[] printoutTitle;
}

bool wxPrintout::OnBeginDocument(int WXUNUSED(startPage), int WXUNUSED(endPage))
{
  return GetDC()->StartDoc("Printing");
}

void wxPrintout::OnEndDocument(void)
{
  GetDC()->EndDoc();
}

void wxPrintout::OnBeginPrinting(void)
{
}

void wxPrintout::OnEndPrinting(void)
{
}

bool wxPrintout::HasPage(int page)
{
  return (page == 1);
}

void wxPrintout::GetPageInfo(int *minPage, int *maxPage, int *fromPage, int *toPage)
{
  *minPage = 1;
  *maxPage = 32000;
  *fromPage = 1;
  *toPage = 1;
}

/*
 * Preview canvas
 */
 
wxPreviewCanvas::wxPreviewCanvas(wxPrintPreviewBase *preview, wxWindow *parent,
		const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 wxScrolledWindow(parent, -1, pos, size, style, name)
{
  printPreview = preview;
  SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));

  SetScrollbars(40, 40, 100, 100);
}

wxPreviewCanvas::~wxPreviewCanvas(void)
{
}

void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
{
  wxPaintDC dc(this);

  if (printPreview)
  {
    printPreview->PaintPage(this, dc);
  }
}

// Responds to colour changes, and passes event on to children.
void wxPreviewCanvas::OnSysColourChanged(wxSysColourChangedEvent& event)
{
  SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
  Refresh();

  // Propagate the event to the non-top-level children
  wxWindow::OnSysColourChanged(event);
}

/*
 * Preview control bar
 */

BEGIN_EVENT_TABLE(wxPreviewControlBar, wxPanel)
	EVT_BUTTON(wxID_PREVIEW_CLOSE, 		wxPreviewControlBar::OnClose)
	EVT_BUTTON(wxID_PREVIEW_PRINT, 		wxPreviewControlBar::OnPrint)
	EVT_BUTTON(wxID_PREVIEW_PREVIOUS, 	wxPreviewControlBar::OnPrevious)
	EVT_BUTTON(wxID_PREVIEW_NEXT, 		wxPreviewControlBar::OnNext)
	EVT_CHOICE(wxID_PREVIEW_ZOOM, 		wxPreviewControlBar::OnZoom)
    EVT_PAINT(wxPreviewControlBar::OnPaint)
END_EVENT_TABLE()
 
wxPreviewControlBar::wxPreviewControlBar(wxPrintPreviewBase *preview, long buttons,
    wxWindow *parent, const wxPoint& pos, const wxSize& size,
    long style, const wxString& name):
  wxPanel(parent, -1, pos, size, style, name)
{
  printPreview = preview;
  closeButton = NULL;
  nextPageButton = NULL;
  previousPageButton = NULL;
  printButton = NULL;
  zoomControl = NULL;
  buttonFlags = buttons;
}

wxFont *wxPreviewControlBar::buttonFont = NULL;

wxPreviewControlBar::~wxPreviewControlBar(void)
{
}

void wxPreviewControlBar::OnPaint(wxPaintEvent& WXUNUSED(event))
{
  wxPaintDC dc(this);

  int w, h;
  GetSize(&w, &h);
  dc.SetPen(*wxBLACK_PEN);
  dc.SetBrush(*wxTRANSPARENT_BRUSH);
  dc.DrawLine( 0, h-1, w, h-1 );
}

void wxPreviewControlBar::OnClose(wxCommandEvent& WXUNUSED(event))
{
  wxPreviewFrame *frame = (wxPreviewFrame *)GetParent();
  frame->Close(TRUE);
}

void wxPreviewControlBar::OnPrint(wxCommandEvent& WXUNUSED(event))
{
  wxPrintPreviewBase *preview = GetPrintPreview();
  preview->Print(TRUE);
}

void wxPreviewControlBar::OnNext(wxCommandEvent& WXUNUSED(event))
{
  wxPrintPreviewBase *preview = GetPrintPreview();
  if (preview)
  {
    int currentPage = preview->GetCurrentPage();
    if ((preview->GetMaxPage() > 0) &&
        (currentPage < preview->GetMaxPage()) &&
        preview->GetPrintout()->HasPage(currentPage + 1))
    {
      preview->SetCurrentPage(currentPage + 1);
    }
  }
}

void wxPreviewControlBar::OnPrevious(wxCommandEvent& WXUNUSED(event))
{
  wxPrintPreviewBase *preview = GetPrintPreview();
  if (preview)
  {
    int currentPage = preview->GetCurrentPage();
    if ((preview->GetMinPage() > 0) &&
        (currentPage > preview->GetMinPage()) &&
        preview->GetPrintout()->HasPage(currentPage - 1))
    {
      preview->SetCurrentPage(currentPage - 1);
    }
  }
}

void wxPreviewControlBar::OnZoom(wxCommandEvent& WXUNUSED(event))
{
  int zoom = GetZoomControl();
  if (GetPrintPreview())
    GetPrintPreview()->SetZoom(zoom);
}

void wxPreviewControlBar::CreateButtons(void)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling

  SetSize(0, 0, 400, 40);

#ifdef __WINDOWS__
  int fontSize = 9;
#else
  int fontSize = 10;
#endif

  if (!buttonFont)
    buttonFont = wxTheFontList->FindOrCreateFont(fontSize, wxSWISS, wxNORMAL, wxBOLD);
  SetButtonFont(*buttonFont);

  int buttonWidth = 65;
  int buttonHeight = 24;

  int x = 5;
  int y = 5;
  int gap = 5;

  closeButton = new wxButton(this, wxID_PREVIEW_CLOSE, "Close",
  	wxPoint(x, y), wxSize(buttonWidth, buttonHeight));

  x += gap + buttonWidth;
  
  if (buttonFlags & wxPREVIEW_PRINT)
  {
    printButton =  new wxButton(this, wxID_PREVIEW_PRINT, "Print...", wxPoint(x, y),
		wxSize(buttonWidth, buttonHeight));
	x += gap + buttonWidth;
  }

  if (buttonFlags & wxPREVIEW_PREVIOUS)
  {
    previousPageButton = new wxButton(this, wxID_PREVIEW_PREVIOUS, "<<", wxPoint(x, y),
		wxSize(buttonWidth, buttonHeight));
	x += gap + buttonWidth;
  }

  if (buttonFlags & wxPREVIEW_NEXT)
  {
    nextPageButton = new wxButton(this, wxID_PREVIEW_NEXT, ">>",
	 	wxPoint(x, y), wxSize(buttonWidth, buttonHeight));
	x += gap + buttonWidth;
  }

  static wxString choices[] = { "10%", "20%", "25%", "30%", "35%", "40%", "45%", "50%", "55%", "60%",
    "65%", "70%", "75%", "80%", "85%", "90%", "95%", "100%", "110%", "120%", "150%", "200%" };
  int n = 22;
  if (buttonFlags & wxPREVIEW_ZOOM)
  {
    zoomControl = new wxChoice(this, wxID_PREVIEW_ZOOM, wxPoint(x, y),
		wxSize(100, -1), n, (wxString *)choices);
    SetZoomControl(printPreview->GetZoom());
  }

  closeButton->SetDefault();
  
#endif
}

void wxPreviewControlBar::SetZoomControl(int zoom)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling
  char buf[20];
  sprintf(buf, "%d%%", zoom);
  if (zoomControl)
    zoomControl->SetStringSelection(buf);
#endif
}

int wxPreviewControlBar::GetZoomControl(void)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling
  char buf[20];
  if (zoomControl && zoomControl->GetStringSelection())
  {
    strcpy(buf, zoomControl->GetStringSelection());
    buf[strlen(buf) - 1] = 0;
    return (int)atoi(buf);
  }
  else return 0;
#else
  return 0;
#endif
}


/*
 * Preview frame
 */

wxPreviewFrame::wxPreviewFrame(wxPrintPreviewBase *preview, wxFrame *parent, const wxString& title,
    const wxPoint& pos, const wxSize& size, long style, const wxString& name):
 wxFrame(parent, -1, title, pos, size, style, name)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling

  printPreview = preview;
  controlBar = NULL;
  previewCanvas = NULL;
#endif
}

wxPreviewFrame::~wxPreviewFrame(void)
{
}

bool wxPreviewFrame::OnClose(void)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling

  MakeModal(FALSE);
  
  // Need to delete the printout and the print preview
  wxPrintout *printout = printPreview->GetPrintout();
  if (printout)
  {
    delete printout;
    printPreview->SetPrintout(NULL);
    printPreview->SetCanvas(NULL);
    printPreview->SetFrame(NULL);
  }
  delete printPreview;
  return TRUE;
#else
  return FALSE;
#endif
}

void wxPreviewFrame::Initialize(void)
{

#ifdef __GOOD_COMPILER__ // Robert Roebling

  CreateStatusBar();
  
  CreateCanvas();
  CreateControlBar();

  printPreview->SetCanvas(previewCanvas);
  printPreview->SetFrame(this);

  // Set layout constraints here

  // Control bar constraints
  wxLayoutConstraints *c1 = new wxLayoutConstraints;
//  int w, h;
//  controlBar->GetSize(&w, &h);
  int h;
#ifdef __WINDOWS__
  h = 40;
#else
  h = 60;
#endif

  c1->left.SameAs       (this, wxLeft);
  c1->top.SameAs        (this, wxTop);
  c1->right.SameAs      (this, wxRight);
  c1->height.Absolute   (h);

  controlBar->SetConstraints(c1);

  // Canvas constraints
  wxLayoutConstraints *c2 = new wxLayoutConstraints;

  c2->left.SameAs       (this, wxLeft);
  c2->top.Below         (controlBar);
  c2->right.SameAs      (this, wxRight);
  c2->bottom.SameAs     (this, wxBottom);

  previewCanvas->SetConstraints(c2);

  SetAutoLayout(TRUE);

  MakeModal(TRUE);

  Layout();
  
#endif  
}

void wxPreviewFrame::CreateCanvas(void)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling

  previewCanvas = new wxPreviewCanvas(printPreview, this);
  
#endif
}

void wxPreviewFrame::CreateControlBar(void)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling

  long buttons = wxPREVIEW_DEFAULT;
  if (printPreview->GetPrintoutForPrinting())
    buttons |= wxPREVIEW_PRINT;
    
  controlBar = new wxPreviewControlBar(printPreview, buttons, this, wxPoint(0, 0), wxSize(400, 40));
  controlBar->CreateButtons();
#endif
}
 
/*
 * Print preview
 */

wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout *printout, wxPrintout *printoutForPrinting, wxPrintData *data)
{

#ifdef __GOOD_COMPILER__ // Robert Roebling

  isOk = TRUE;
  previewPrintout = printout;
  if (previewPrintout)
    previewPrintout->SetIsPreview(TRUE);
    
  printPrintout = printoutForPrinting;
  if (data)
    printData = (*data);

  previewCanvas = NULL;
  previewFrame = NULL;
  previewBitmap = NULL;
  currentPage = 1;
  currentZoom = 30;
  topMargin = 40;
  leftMargin = 40;
  pageWidth = 0;
  pageHeight = 0;

  printout->OnPreparePrinting();

  // Get some parameters from the printout, if defined
  int selFrom, selTo;
  printout->GetPageInfo(&minPage, &maxPage, &selFrom, &selTo);
  
#endif  
}

wxPrintPreviewBase::~wxPrintPreviewBase(void)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling

  if (previewPrintout)
    delete previewPrintout;
  if (previewBitmap)
    delete previewBitmap;
  if (printPrintout)
    delete printPrintout;
    
#endif
}

bool wxPrintPreviewBase::SetCurrentPage(int pageNum)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling
  if (currentPage == pageNum)
    return TRUE;

  currentPage = pageNum;
  if (previewBitmap)
  {
    delete previewBitmap;
    previewBitmap = NULL;
  }

  if (previewCanvas)
  {
    RenderPage(pageNum);
    previewCanvas->Refresh();
  }
  
#endif
  return TRUE;
}

bool wxPrintPreviewBase::PaintPage(wxWindow *canvas, wxDC& dc)
{

#ifdef __GOOD_COMPILER__  // Robert Roebling

  DrawBlankPage(canvas, dc);

  if (!previewBitmap)
    RenderPage(currentPage);
    
  if (!previewBitmap)
    return FALSE;

  if (!canvas)
    return FALSE;

  int canvasWidth, canvasHeight;
  canvas->GetSize(&canvasWidth, &canvasHeight);
  
  float zoomScale = (float)((float)currentZoom/(float)100);
  float actualWidth = (float)(zoomScale*pageWidth*previewScale);
//  float actualHeight = (float)(zoomScale*pageHeight*previewScale);

  float x = (float)((canvasWidth - actualWidth)/2.0);
  if (x < leftMargin)
    x = (float)leftMargin;
  float y = (float)topMargin;

  wxMemoryDC temp_dc;
  temp_dc.SelectObject(*previewBitmap);

  dc.Blit((float)x, (float)y, (float)previewBitmap->GetWidth(), (float)previewBitmap->GetHeight(), &temp_dc, (float)0, (float)0);

  temp_dc.SelectObject(wxNullBitmap);

#endif  
  
  return TRUE;
}

bool wxPrintPreviewBase::RenderPage(int pageNum)
{
  int canvasWidth, canvasHeight;
  
#ifdef __GOOD_COMPILER__  // Robert Roebling

  if (!previewCanvas)
  {
    wxMessageBox("wxPrintPreviewBase::RenderPage: must use wxPrintPreviewBase::SetCanvas to let me know about the canvas!",
      "Print Preview Failure", wxOK);
    return FALSE;
  }
  previewCanvas->GetSize(&canvasWidth, &canvasHeight);
  
  float zoomScale = (float)((float)currentZoom/(float)100);
  float actualWidth = (float)(zoomScale*pageWidth*previewScale);
  float actualHeight = (float)(zoomScale*pageHeight*previewScale);

  float x = (float)((canvasWidth - actualWidth)/2.0);
  if (x < leftMargin)
    x = (float)leftMargin;
//  float y = topMargin;


  if (!previewBitmap)
  {
    previewBitmap = new wxBitmap((int)actualWidth, (int)actualHeight);
    if (!previewBitmap || !previewBitmap->Ok())
    {
      if (previewBitmap)
        delete previewBitmap;
      wxMessageBox("Sorry, not enough memory to create a preview.", "Print Preview Failure", wxOK);
      return FALSE;
    }
  }
  
  wxMemoryDC memoryDC;
  memoryDC.SelectObject(*previewBitmap);

  memoryDC.Clear();

  previewPrintout->SetDC(&memoryDC);
  previewPrintout->SetPageSizePixels(pageWidth, pageHeight);

  previewPrintout->OnBeginPrinting();
  

  if (!previewPrintout->OnBeginDocument(printData.GetFromPage(), printData.GetToPage()))
  {
    wxMessageBox("Could not start document preview.", "Print Preview Failure", wxOK);
    
    memoryDC.SelectObject(wxNullBitmap);

    delete previewBitmap;
    return FALSE;
  }
  
  previewPrintout->OnPrintPage(pageNum);
  previewPrintout->OnEndDocument();
  previewPrintout->OnEndPrinting();

  previewPrintout->SetDC(NULL);
  
  memoryDC.SelectObject(wxNullBitmap);
#endif

  char buf[200];
  if (maxPage != 0)
    sprintf(buf, "Page %d of %d", pageNum, maxPage);
  else
    sprintf(buf, "Page %d", pageNum);

  if (previewFrame)
    previewFrame->SetStatusText(buf);

  return TRUE;
}


bool wxPrintPreviewBase::DrawBlankPage(wxWindow *canvas, wxDC& dc)
{

#ifdef __GOOD_COMPILER__ // Robert Roebling

  int canvasWidth, canvasHeight;
  canvas->GetSize(&canvasWidth, &canvasHeight);
  
  float zoomScale = (float)((float)currentZoom/(float)100);
  float actualWidth = zoomScale*pageWidth*previewScale;
  float actualHeight = zoomScale*pageHeight*previewScale;

  float x = (float)((canvasWidth - actualWidth)/2.0);
  if (x < leftMargin)
    x = (float)leftMargin;
  float y = (float)topMargin;

  // Draw shadow, allowing for 1-pixel border AROUND the actual page
  int shadowOffset = 4;
  dc.SetPen(*wxBLACK_PEN);
  dc.SetBrush(*wxBLACK_BRUSH);
  dc.DrawRectangle(x-1 + shadowOffset, y-1 + shadowOffset, actualWidth+2, actualHeight+2);

  // Draw blank page allowing for 1-pixel border AROUND the actual page
  dc.SetPen(*wxBLACK_PEN);
  dc.SetBrush(*wxWHITE_BRUSH);
  

  dc.DrawRectangle(x-1, y-1, actualWidth+2, actualHeight+2);
  
#endif

  return TRUE;
}

void wxPrintPreviewBase::SetZoom(int percent)
{
#ifdef __GOOD_COMPILER__ // Robert Roebling
  if (currentZoom == percent)
    return;
    
  currentZoom = percent;
  if (previewBitmap)
  {
    delete previewBitmap;
    previewBitmap = NULL;
  }
  RenderPage(currentPage);
  
  if (previewCanvas)
  {
    previewCanvas->Clear();
    previewCanvas->Refresh();
  }
#endif  
  
}
Commit	Line	Data
c801d85f KB	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: prntbase.cpp
	3	// Purpose: Printing framework base class implementation
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 04/01/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart and Markus Holzem
	9	// Licence: wxWindows license
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "prntbase.h"
	14	#endif
	15
	16	// For compilers that support precompilation, includes "wx.h".
	17	#include "wx/wxprec.h"
	18
	19	#ifdef __BORLANDC__
	20	#pragma hdrstop
	21	#endif
	22
	23	// #define __GOOD_COMPILER__
	24
	25	#include "wx/defs.h"
	26
	27	#ifndef WX_PRECOMP
	28	#include "wx/utils.h"
	29	#include "wx/dc.h"
	30	#include "wx/app.h"
	31	#include "wx/msgdlg.h"
	32	#include "wx/layout.h"
	33	#include "wx/choice.h"
	34	#include "wx/button.h"
	35	#include "wx/settings.h"
	36	#include "wx/dcmemory.h"
	37	#include "wx/stattext.h"
	38	#include "wx/intl.h"
	39	#endif
	40
	41	#include "wx/prntbase.h"
	42	#include "wx/dcprint.h"
	43	#include "wx/printdlg.h"
	44
	45	#include <stdlib.h>
	46	#include <string.h>
	47
	48	#ifdef __WINDOWS__
	49	#include <windows.h>
	50	#include <commdlg.h>
	51
	52	// Clash with Windows header files
	53	#ifdef StartDoc
	54	#undef StartDoc
	55	#endif
	56
	57	#ifndef __WIN32__
	58	#include <print.h>
	59	#endif
	60
	61	#if !defined(APIENTRY) // NT defines APIENTRY, 3.x not
	62	#define APIENTRY FAR PASCAL
	63	#endif
	64
65	#ifdef __WIN32__
66	#define _EXPORT /**/
67	#else
68	#define _EXPORT _export
69	typedef signed short int SHORT ;
70	#endif
71
72	#if !defined(__WIN32__) // 3.x uses FARPROC for dialogs
73	#define DLGPROC FARPROC
74	#endif
75
76	LONG APIENTRY _EXPORT wxAbortProc(HDC hPr, int Code);
77	#endif
78	// End __WINDOWS__
79
80	#if !USE_SHARED_LIBRARY
81	IMPLEMENT_CLASS(wxPrinterBase, wxObject)
82	IMPLEMENT_ABSTRACT_CLASS(wxPrintout, wxObject)
83	IMPLEMENT_CLASS(wxPreviewCanvas, wxWindow)
84	IMPLEMENT_CLASS(wxPreviewControlBar, wxWindow)
85	IMPLEMENT_CLASS(wxPreviewFrame, wxFrame)
86	IMPLEMENT_CLASS(wxPrintPreviewBase, wxObject)
87
88	BEGIN_EVENT_TABLE(wxPrintAbortDialog, wxDialog)
89	EVT_BUTTON(wxID_CANCEL, wxPrintAbortDialog::OnCancel)
90	END_EVENT_TABLE()
91
92	BEGIN_EVENT_TABLE(wxPreviewCanvas, wxScrolledWindow)
93	EVT_PAINT(wxPreviewCanvas::OnPaint)
94	EVT_SYS_COLOUR_CHANGED(wxPreviewCanvas::OnSysColourChanged)
95	END_EVENT_TABLE()
96	#endif
97
98	/*
99	* Printer
100	*/
101
102	wxPrinterBase::wxPrinterBase(wxPrintData *data)
103	{
104	currentPrintout = NULL;
105	abortWindow = NULL;
106	abortIt = FALSE;
107	if (data)
108	printData = (*data);
109	}
110
111	wxWindow *wxPrinterBase::abortWindow = NULL;
112	bool wxPrinterBase::abortIt = FALSE;
113
114	wxPrinterBase::~wxPrinterBase(void)
115	{
116	}
117
118	void wxPrintAbortDialog::OnCancel(wxCommandEvent& WXUNUSED(event))
119	{
120	wxPrinterBase::abortIt = TRUE;
121	wxPrinterBase::abortWindow->Show(FALSE);
122	wxPrinterBase::abortWindow->Close(TRUE);
123	wxPrinterBase::abortWindow = NULL;
124	}
125
126	wxWindow wxPrinterBase::CreateAbortWindow(wxWindow parent, wxPrintout *WXUNUSED(printout))
127	{
128	wxPrintAbortDialog *dialog = new wxPrintAbortDialog(parent, _("Printing"), wxPoint(0, 0), wxSize(400, 400));
129	(void) new wxStaticText(dialog, -1, _("Please wait..."), wxPoint(5, 5));
130
131	wxButton *button = new wxButton(dialog, wxID_CANCEL, _("Cancel"), wxPoint(5, 30));
132
133	dialog->Fit();
134	button->Centre(wxHORIZONTAL);
135
136	dialog->Centre();
137	return dialog;
138	}
139
140	void wxPrinterBase::ReportError(wxWindow parent, wxPrintout WXUNUSED(printout), char *message)
141	{
142	wxMessageBox(message, "Printing Error", wxOK, parent);
143	}
144
145	/*
146	* Printout class
147	*/
148
149	wxPrintout::wxPrintout(char *title)
150	{
151	printoutTitle = title ? copystring(title) : (char*)NULL;
152	printoutDC = NULL;
153	pageWidthMM = 0;
154	pageHeightMM = 0;
155	pageWidthPixels = 0;
156	pageHeightPixels = 0;
157	PPIScreenX = 0;
158	PPIScreenY = 0;
159	PPIPrinterX = 0;
160	PPIPrinterY = 0;
161	isPreview = FALSE;
162	}
163
164	wxPrintout::~wxPrintout(void)
165	{
166	if (printoutTitle)
167	delete[] printoutTitle;
168	}
169
170	bool wxPrintout::OnBeginDocument(int WXUNUSED(startPage), int WXUNUSED(endPage))
171	{
172	return GetDC()->StartDoc("Printing");
173	}
174
175	void wxPrintout::OnEndDocument(void)
176	{
177	GetDC()->EndDoc();
178	}
179
180	void wxPrintout::OnBeginPrinting(void)
181	{
182	}
183
184	void wxPrintout::OnEndPrinting(void)
185	{
186	}
187
188	bool wxPrintout::HasPage(int page)
189	{
190	return (page == 1);
191	}
192
193	void wxPrintout::GetPageInfo(int minPage, int maxPage, int fromPage, int toPage)
194	{
195	*minPage = 1;
196	*maxPage = 32000;
197	*fromPage = 1;
198	*toPage = 1;
199	}
200
201	/*
202	* Preview canvas
203	*/
204
205	wxPreviewCanvas::wxPreviewCanvas(wxPrintPreviewBase preview, wxWindow parent,
206	const wxPoint& pos, const wxSize& size, long style, const wxString& name):
207	wxScrolledWindow(parent, -1, pos, size, style, name)
208	{
209	printPreview = preview;
210	SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
211
212	SetScrollbars(40, 40, 100, 100);
213	}
214
215	wxPreviewCanvas::~wxPreviewCanvas(void)
216	{
217	}
218
219	void wxPreviewCanvas::OnPaint(wxPaintEvent& WXUNUSED(event))
220	{
221	wxPaintDC dc(this);
222
223	if (printPreview)
224	{
225	printPreview->PaintPage(this, dc);
226	}
227	}
228
229	// Responds to colour changes, and passes event on to children.
230	void wxPreviewCanvas::OnSysColourChanged(wxSysColourChangedEvent& event)
231	{
232	SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_APPWORKSPACE));
233	Refresh();
234
235	// Propagate the event to the non-top-level children
236	wxWindow::OnSysColourChanged(event);
237	}
238
239	/*
240	* Preview control bar
241	*/
242
243	BEGIN_EVENT_TABLE(wxPreviewControlBar, wxPanel)
244	EVT_BUTTON(wxID_PREVIEW_CLOSE, wxPreviewControlBar::OnClose)
245	EVT_BUTTON(wxID_PREVIEW_PRINT, wxPreviewControlBar::OnPrint)
246	EVT_BUTTON(wxID_PREVIEW_PREVIOUS, wxPreviewControlBar::OnPrevious)
247	EVT_BUTTON(wxID_PREVIEW_NEXT, wxPreviewControlBar::OnNext)
248	EVT_CHOICE(wxID_PREVIEW_ZOOM, wxPreviewControlBar::OnZoom)
249	EVT_PAINT(wxPreviewControlBar::OnPaint)
250	END_EVENT_TABLE()
251
252	wxPreviewControlBar::wxPreviewControlBar(wxPrintPreviewBase *preview, long buttons,
253	wxWindow *parent, const wxPoint& pos, const wxSize& size,
254	long style, const wxString& name):
255	wxPanel(parent, -1, pos, size, style, name)
256	{
257	printPreview = preview;
258	closeButton = NULL;
259	nextPageButton = NULL;
260	previousPageButton = NULL;
261	printButton = NULL;
262	zoomControl = NULL;
263	buttonFlags = buttons;
264	}
265
266	wxFont *wxPreviewControlBar::buttonFont = NULL;
267
268	wxPreviewControlBar::~wxPreviewControlBar(void)
269	{
270	}
271
272	void wxPreviewControlBar::OnPaint(wxPaintEvent& WXUNUSED(event))
273	{
274	wxPaintDC dc(this);
275
276	int w, h;
277	GetSize(&w, &h);
278	dc.SetPen(*wxBLACK_PEN);
279	dc.SetBrush(*wxTRANSPARENT_BRUSH);
280	dc.DrawLine( 0, h-1, w, h-1 );
281	}
282
283	void wxPreviewControlBar::OnClose(wxCommandEvent& WXUNUSED(event))
284	{
285	wxPreviewFrame frame = (wxPreviewFrame )GetParent();
286	frame->Close(TRUE);
287	}
288
289	void wxPreviewControlBar::OnPrint(wxCommandEvent& WXUNUSED(event))
290	{
291	wxPrintPreviewBase *preview = GetPrintPreview();
292	preview->Print(TRUE);
293	}
294
295	void wxPreviewControlBar::OnNext(wxCommandEvent& WXUNUSED(event))
296	{
297	wxPrintPreviewBase *preview = GetPrintPreview();
298	if (preview)
299	{
300	int currentPage = preview->GetCurrentPage();
301	if ((preview->GetMaxPage() > 0) &&
302	(currentPage < preview->GetMaxPage()) &&
303	preview->GetPrintout()->HasPage(currentPage + 1))
304	{
305	preview->SetCurrentPage(currentPage + 1);
306	}
307	}
308	}
309
310	void wxPreviewControlBar::OnPrevious(wxCommandEvent& WXUNUSED(event))
311	{
312	wxPrintPreviewBase *preview = GetPrintPreview();
313	if (preview)
314	{
315	int currentPage = preview->GetCurrentPage();
316	if ((preview->GetMinPage() > 0) &&
317	(currentPage > preview->GetMinPage()) &&
318	preview->GetPrintout()->HasPage(currentPage - 1))
319	{
320	preview->SetCurrentPage(currentPage - 1);
321	}
322	}
323	}
324
325	void wxPreviewControlBar::OnZoom(wxCommandEvent& WXUNUSED(event))
326	{
327	int zoom = GetZoomControl();
328	if (GetPrintPreview())
329	GetPrintPreview()->SetZoom(zoom);
330	}
331
332	void wxPreviewControlBar::CreateButtons(void)
333	{
334	#ifdef __GOOD_COMPILER__ // Robert Roebling
335
336	SetSize(0, 0, 400, 40);
337
338	#ifdef __WINDOWS__
339	int fontSize = 9;
340	#else
341	int fontSize = 10;
342	#endif
343
344	if (!buttonFont)
345	buttonFont = wxTheFontList->FindOrCreateFont(fontSize, wxSWISS, wxNORMAL, wxBOLD);
346	SetButtonFont(*buttonFont);
347
348	int buttonWidth = 65;
349	int buttonHeight = 24;
350
351	int x = 5;
352	int y = 5;
353	int gap = 5;
354
355	closeButton = new wxButton(this, wxID_PREVIEW_CLOSE, "Close",
356	wxPoint(x, y), wxSize(buttonWidth, buttonHeight));
357
358	x += gap + buttonWidth;
359
360	if (buttonFlags & wxPREVIEW_PRINT)
361	{
362	printButton = new wxButton(this, wxID_PREVIEW_PRINT, "Print...", wxPoint(x, y),
363	wxSize(buttonWidth, buttonHeight));
364	x += gap + buttonWidth;
365	}
366
367	if (buttonFlags & wxPREVIEW_PREVIOUS)
368	{
369	previousPageButton = new wxButton(this, wxID_PREVIEW_PREVIOUS, "<<", wxPoint(x, y),
370	wxSize(buttonWidth, buttonHeight));
371	x += gap + buttonWidth;
372	}
373
374	if (buttonFlags & wxPREVIEW_NEXT)
375	{
376	nextPageButton = new wxButton(this, wxID_PREVIEW_NEXT, ">>",
377	wxPoint(x, y), wxSize(buttonWidth, buttonHeight));
378	x += gap + buttonWidth;
379	}
380
381	static wxString choices[] = { "10%", "20%", "25%", "30%", "35%", "40%", "45%", "50%", "55%", "60%",
382	"65%", "70%", "75%", "80%", "85%", "90%", "95%", "100%", "110%", "120%", "150%", "200%" };
383	int n = 22;
384	if (buttonFlags & wxPREVIEW_ZOOM)
385	{
386	zoomControl = new wxChoice(this, wxID_PREVIEW_ZOOM, wxPoint(x, y),
387	wxSize(100, -1), n, (wxString *)choices);
388	SetZoomControl(printPreview->GetZoom());
389	}
390
391	closeButton->SetDefault();
392
393	#endif
394	}
395
396	void wxPreviewControlBar::SetZoomControl(int zoom)
397	{
398	#ifdef __GOOD_COMPILER__ // Robert Roebling
399	char buf[20];
400	sprintf(buf, "%d%%", zoom);
401	if (zoomControl)
402	zoomControl->SetStringSelection(buf);
403	#endif
404	}
405
406	int wxPreviewControlBar::GetZoomControl(void)
407	{
408	#ifdef __GOOD_COMPILER__ // Robert Roebling
409	char buf[20];
410	if (zoomControl && zoomControl->GetStringSelection())
411	{
412	strcpy(buf, zoomControl->GetStringSelection());
413	buf[strlen(buf) - 1] = 0;
414	return (int)atoi(buf);
415	}
416	else return 0;
aad5220b JS	417	#else
aad5220b JS	418	return 0;
c801d85f KB	419	#endif
	420	}
	421
	422
	423	/*
	424	* Preview frame
	425	*/
	426
	427	wxPreviewFrame::wxPreviewFrame(wxPrintPreviewBase preview, wxFrame parent, const wxString& title,
	428	const wxPoint& pos, const wxSize& size, long style, const wxString& name):
	429	wxFrame(parent, -1, title, pos, size, style, name)
	430	{
	431	#ifdef __GOOD_COMPILER__ // Robert Roebling
	432
	433	printPreview = preview;
	434	controlBar = NULL;
	435	previewCanvas = NULL;
	436	#endif
	437	}
	438
	439	wxPreviewFrame::~wxPreviewFrame(void)
	440	{
	441	}
	442
	443	bool wxPreviewFrame::OnClose(void)
	444	{
	445	#ifdef __GOOD_COMPILER__ // Robert Roebling
	446
	447	MakeModal(FALSE);
	448
	449	// Need to delete the printout and the print preview
	450	wxPrintout *printout = printPreview->GetPrintout();
	451	if (printout)
	452	{
	453	delete printout;
	454	printPreview->SetPrintout(NULL);
	455	printPreview->SetCanvas(NULL);
	456	printPreview->SetFrame(NULL);
	457	}
	458	delete printPreview;
	459	return TRUE;
aad5220b JS	460	#else
aad5220b JS	461	return FALSE;
c801d85f KB	462	#endif
	463	}
	464
	465	void wxPreviewFrame::Initialize(void)
	466	{
	467
	468	#ifdef __GOOD_COMPILER__ // Robert Roebling
	469
	470	CreateStatusBar();
	471
	472	CreateCanvas();
	473	CreateControlBar();
	474
	475	printPreview->SetCanvas(previewCanvas);
	476	printPreview->SetFrame(this);
	477
	478	// Set layout constraints here
	479
	480	// Control bar constraints
	481	wxLayoutConstraints *c1 = new wxLayoutConstraints;
	482	// int w, h;
	483	// controlBar->GetSize(&w, &h);
	484	int h;
	485	#ifdef __WINDOWS__
	486	h = 40;
	487	#else
	488	h = 60;
	489	#endif
	490
	491	c1->left.SameAs (this, wxLeft);
	492	c1->top.SameAs (this, wxTop);
	493	c1->right.SameAs (this, wxRight);
	494	c1->height.Absolute (h);
	495
	496	controlBar->SetConstraints(c1);
	497
	498	// Canvas constraints
	499	wxLayoutConstraints *c2 = new wxLayoutConstraints;
	500
	501	c2->left.SameAs (this, wxLeft);
	502	c2->top.Below (controlBar);
	503	c2->right.SameAs (this, wxRight);
	504	c2->bottom.SameAs (this, wxBottom);
	505
	506	previewCanvas->SetConstraints(c2);
	507
	508	SetAutoLayout(TRUE);
	509
	510	MakeModal(TRUE);
	511
	512	Layout();
	513
	514	#endif
	515	}
	516
	517	void wxPreviewFrame::CreateCanvas(void)
	518	{
	519	#ifdef __GOOD_COMPILER__ // Robert Roebling
	520
	521	previewCanvas = new wxPreviewCanvas(printPreview, this);
	522
	523	#endif
	524	}
	525
526	void wxPreviewFrame::CreateControlBar(void)
527	{
528	#ifdef __GOOD_COMPILER__ // Robert Roebling
529
530	long buttons = wxPREVIEW_DEFAULT;
531	if (printPreview->GetPrintoutForPrinting())
532	buttons \|= wxPREVIEW_PRINT;
533
534	controlBar = new wxPreviewControlBar(printPreview, buttons, this, wxPoint(0, 0), wxSize(400, 40));
535	controlBar->CreateButtons();
536	#endif
537	}
538
539	/*
540	* Print preview
541	*/
542
543	wxPrintPreviewBase::wxPrintPreviewBase(wxPrintout printout, wxPrintout printoutForPrinting, wxPrintData *data)
544	{
545
546	#ifdef __GOOD_COMPILER__ // Robert Roebling
547
548	isOk = TRUE;
549	previewPrintout = printout;
550	if (previewPrintout)
551	previewPrintout->SetIsPreview(TRUE);
552
553	printPrintout = printoutForPrinting;
554	if (data)
555	printData = (*data);
556
557	previewCanvas = NULL;
558	previewFrame = NULL;
559	previewBitmap = NULL;
560	currentPage = 1;
561	currentZoom = 30;
562	topMargin = 40;
563	leftMargin = 40;
564	pageWidth = 0;
565	pageHeight = 0;
566
567	printout->OnPreparePrinting();
568
569	// Get some parameters from the printout, if defined
570	int selFrom, selTo;
571	printout->GetPageInfo(&minPage, &maxPage, &selFrom, &selTo);
572
573	#endif
574	}
575
576	wxPrintPreviewBase::~wxPrintPreviewBase(void)
577	{
578	#ifdef __GOOD_COMPILER__ // Robert Roebling
579
580	if (previewPrintout)
581	delete previewPrintout;
582	if (previewBitmap)
583	delete previewBitmap;
584	if (printPrintout)
585	delete printPrintout;
586
587	#endif
588	}
589
590	bool wxPrintPreviewBase::SetCurrentPage(int pageNum)
591	{
592	#ifdef __GOOD_COMPILER__ // Robert Roebling
593	if (currentPage == pageNum)
594	return TRUE;
595
596	currentPage = pageNum;
597	if (previewBitmap)
598	{
599	delete previewBitmap;
600	previewBitmap = NULL;
601	}
602
603	if (previewCanvas)
604	{
605	RenderPage(pageNum);
606	previewCanvas->Refresh();
607	}
608
609	#endif
610	return TRUE;
611	}
612
613	bool wxPrintPreviewBase::PaintPage(wxWindow *canvas, wxDC& dc)
614	{
615
616	#ifdef __GOOD_COMPILER__ // Robert Roebling
617
618	DrawBlankPage(canvas, dc);
619
620	if (!previewBitmap)
621	RenderPage(currentPage);
622
623	if (!previewBitmap)
624	return FALSE;
625
626	if (!canvas)
627	return FALSE;
628
629	int canvasWidth, canvasHeight;
630	canvas->GetSize(&canvasWidth, &canvasHeight);
631
632	float zoomScale = (float)((float)currentZoom/(float)100);
633	float actualWidth = (float)(zoomScalepageWidthpreviewScale);
634	// float actualHeight = (float)(zoomScalepageHeightpreviewScale);
635
636	float x = (float)((canvasWidth - actualWidth)/2.0);
637	if (x < leftMargin)
638	x = (float)leftMargin;
639	float y = (float)topMargin;
640
641	wxMemoryDC temp_dc;
642	temp_dc.SelectObject(*previewBitmap);
643
644	dc.Blit((float)x, (float)y, (float)previewBitmap->GetWidth(), (float)previewBitmap->GetHeight(), &temp_dc, (float)0, (float)0);
645
646	temp_dc.SelectObject(wxNullBitmap);
647
648	#endif
649
650	return TRUE;
651	}
652
653	bool wxPrintPreviewBase::RenderPage(int pageNum)
654	{
655	int canvasWidth, canvasHeight;
656
657	#ifdef __GOOD_COMPILER__ // Robert Roebling
658
659	if (!previewCanvas)
660	{
661	wxMessageBox("wxPrintPreviewBase::RenderPage: must use wxPrintPreviewBase::SetCanvas to let me know about the canvas!",
662	"Print Preview Failure", wxOK);
663	return FALSE;
664	}
665	previewCanvas->GetSize(&canvasWidth, &canvasHeight);
666
667	float zoomScale = (float)((float)currentZoom/(float)100);
668	float actualWidth = (float)(zoomScalepageWidthpreviewScale);
669	float actualHeight = (float)(zoomScalepageHeightpreviewScale);
670
671	float x = (float)((canvasWidth - actualWidth)/2.0);
672	if (x < leftMargin)
673	x = (float)leftMargin;
674	// float y = topMargin;
675
676
677	if (!previewBitmap)
678	{
679	previewBitmap = new wxBitmap((int)actualWidth, (int)actualHeight);
680	if (!previewBitmap \|\| !previewBitmap->Ok())
681	{
682	if (previewBitmap)
683	delete previewBitmap;
684	wxMessageBox("Sorry, not enough memory to create a preview.", "Print Preview Failure", wxOK);
685	return FALSE;
686	}
687	}
688
689	wxMemoryDC memoryDC;
690	memoryDC.SelectObject(*previewBitmap);
691
692	memoryDC.Clear();
693
694	previewPrintout->SetDC(&memoryDC);
695	previewPrintout->SetPageSizePixels(pageWidth, pageHeight);
696
697	previewPrintout->OnBeginPrinting();
698
699
700	if (!previewPrintout->OnBeginDocument(printData.GetFromPage(), printData.GetToPage()))
701	{
702	wxMessageBox("Could not start document preview.", "Print Preview Failure", wxOK);
703
704	memoryDC.SelectObject(wxNullBitmap);
705
706	delete previewBitmap;
707	return FALSE;
708	}
709
710	previewPrintout->OnPrintPage(pageNum);
711	previewPrintout->OnEndDocument();
712	previewPrintout->OnEndPrinting();
713
714	previewPrintout->SetDC(NULL);
715
716	memoryDC.SelectObject(wxNullBitmap);
717	#endif
718
719	char buf[200];
720	if (maxPage != 0)
721	sprintf(buf, "Page %d of %d", pageNum, maxPage);
722	else
723	sprintf(buf, "Page %d", pageNum);
724
725	if (previewFrame)
726	previewFrame->SetStatusText(buf);
727
728	return TRUE;
729	}
730
731
732	bool wxPrintPreviewBase::DrawBlankPage(wxWindow *canvas, wxDC& dc)
733	{
734
735	#ifdef __GOOD_COMPILER__ // Robert Roebling
736
737	int canvasWidth, canvasHeight;
738	canvas->GetSize(&canvasWidth, &canvasHeight);
739
740	float zoomScale = (float)((float)currentZoom/(float)100);
741	float actualWidth = zoomScalepageWidthpreviewScale;
742	float actualHeight = zoomScalepageHeightpreviewScale;
743
744	float x = (float)((canvasWidth - actualWidth)/2.0);
745	if (x < leftMargin)
746	x = (float)leftMargin;
747	float y = (float)topMargin;
748
749	// Draw shadow, allowing for 1-pixel border AROUND the actual page
750	int shadowOffset = 4;
751	dc.SetPen(*wxBLACK_PEN);
752	dc.SetBrush(*wxBLACK_BRUSH);
753	dc.DrawRectangle(x-1 + shadowOffset, y-1 + shadowOffset, actualWidth+2, actualHeight+2);
754
755	// Draw blank page allowing for 1-pixel border AROUND the actual page
756	dc.SetPen(*wxBLACK_PEN);
757	dc.SetBrush(*wxWHITE_BRUSH);
758
759
760	dc.DrawRectangle(x-1, y-1, actualWidth+2, actualHeight+2);
761
762	#endif
763
764	return TRUE;
765	}
766
767	void wxPrintPreviewBase::SetZoom(int percent)
768	{
769	#ifdef __GOOD_COMPILER__ // Robert Roebling
770	if (currentZoom == percent)
771	return;
772
773	currentZoom = percent;
774	if (previewBitmap)
775	{
776	delete previewBitmap;
777	previewBitmap = NULL;
778	}
779	RenderPage(currentPage);
780
781	if (previewCanvas)
782	{
783	previewCanvas->Clear();
784	previewCanvas->Refresh();
785	}
786	#endif
787
788	}