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printing
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printing.cpp
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C/C++ Source or Header
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2002-08-19
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/////////////////////////////////////////////////////////////////////////////
// Name: printing.cpp
// Purpose: Printing demo for wxWindows
// Author: Julian Smart
// Modified by:
// Created: 1995
// RCS-ID: $Id: printing.cpp,v 1.29 2002/08/19 10:03:20 JS Exp $
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation
#endif
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#if !wxUSE_PRINTING_ARCHITECTURE
#error You must set wxUSE_PRINTING_ARCHITECTURE to 1 in setup.h to compile this demo.
#endif
// Set this to 1 if you want to test PostScript printing under MSW.
// However, you'll also need to edit src/msw/makefile.nt.
#define wxTEST_POSTSCRIPT_IN_MSW 0
#include <ctype.h>
#include "wx/metafile.h"
#include "wx/print.h"
#include "wx/printdlg.h"
#include "wx/accel.h"
#if wxTEST_POSTSCRIPT_IN_MSW
#include "wx/generic/printps.h"
#include "wx/generic/prntdlgg.h"
#endif
#include "printing.h"
#ifndef __WXMSW__
#include "mondrian.xpm"
#endif
// Declare a frame
MyFrame *frame = (MyFrame *) NULL;
// int orientation = wxPORTRAIT;
// Global print data, to remember settings during the session
wxPrintData *g_printData = (wxPrintData*) NULL ;
// Global page setup data
wxPageSetupData* g_pageSetupData = (wxPageSetupData*) NULL;
// Main proc
IMPLEMENT_APP(MyApp)
// Writes a header on a page. Margin units are in millimetres.
bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical);
MyApp::MyApp()
{
}
// The `main program' equivalent, creating the windows and returning the
// main frame
bool MyApp::OnInit(void)
{
m_testFont = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL);
g_printData = new wxPrintData;
g_pageSetupData = new wxPageSetupDialogData;
// Create the main frame window
frame = new MyFrame((wxFrame *) NULL, (char *) "wxWindows Printing Demo", wxPoint(0, 0), wxSize(400, 400));
// Give it a status line
frame->CreateStatusBar(2);
// Load icon and bitmap
frame->SetIcon( wxICON( mondrian) );
// Make a menubar
wxMenu *file_menu = new wxMenu;
file_menu->Append(WXPRINT_PRINT, "&Print...", "Print");
file_menu->Append(WXPRINT_PRINT_SETUP, "Print &Setup...", "Setup printer properties");
file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...", "Page setup");
file_menu->Append(WXPRINT_PREVIEW, "Print Pre&view", "Preview");
#if wxUSE_ACCEL
// Accelerators
wxAcceleratorEntry entries[1];
entries[0].Set(wxACCEL_CTRL, (int) 'V', WXPRINT_PREVIEW);
wxAcceleratorTable accel(1, entries);
frame->SetAcceleratorTable(accel);
#endif
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
file_menu->AppendSeparator();
file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...", "Print (PostScript)");
file_menu->Append(WXPRINT_PRINT_SETUP_PS, "Print Setup PostScript...", "Setup printer properties (PostScript)");
file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...", "Page setup (PostScript)");
file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript", "Preview (PostScript)");
#endif
file_menu->AppendSeparator();
file_menu->Append(WXPRINT_QUIT, "E&xit", "Exit program");
wxMenu *help_menu = new wxMenu;
help_menu->Append(WXPRINT_ABOUT, "&About", "About this demo");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
menu_bar->Append(help_menu, "&Help");
// Associate the menu bar with the frame
frame->SetMenuBar(menu_bar);
MyCanvas *canvas = new MyCanvas(frame, wxPoint(0, 0), wxSize(100, 100), wxRETAINED|wxHSCROLL|wxVSCROLL);
// Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
canvas->SetScrollbars(20, 20, 50, 50);
frame->canvas = canvas;
frame->Centre(wxBOTH);
frame->Show(TRUE);
frame->SetStatusText("Printing demo");
SetTopWindow(frame);
return TRUE;
}
int MyApp::OnExit()
{
delete wxGetApp().m_testFont;
delete g_printData;
delete g_pageSetupData;
return 1;
}
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(WXPRINT_QUIT, MyFrame::OnExit)
EVT_MENU(WXPRINT_PRINT, MyFrame::OnPrint)
EVT_MENU(WXPRINT_PREVIEW, MyFrame::OnPrintPreview)
EVT_MENU(WXPRINT_PRINT_SETUP, MyFrame::OnPrintSetup)
EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
EVT_MENU(WXPRINT_ABOUT, MyFrame::OnPrintAbout)
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
EVT_MENU(WXPRINT_PRINT_SETUP_PS, MyFrame::OnPrintSetupPS)
EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
#endif
END_EVENT_TABLE()
// Define my frame constructor
MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size):
wxFrame(frame, -1, title, pos, size)
{
canvas = (MyCanvas *) NULL;
}
void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
{
Close(TRUE);
}
void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
{
wxPrintDialogData printDialogData(* g_printData);
wxPrinter printer(& printDialogData);
MyPrintout printout("My printout");
if (!printer.Print(this, &printout, TRUE))
{
if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK);
else
wxMessageBox("You canceled printing", "Printing", wxOK);
}
else
{
(*g_printData) = printer.GetPrintDialogData().GetPrintData();
}
}
void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
{
// Pass two printout objects: for preview, and possible printing.
wxPrintDialogData printDialogData(* g_printData);
wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
if (!preview->Ok())
{
delete preview;
wxMessageBox("There was a problem previewing.\nPerhaps your current printer is not set correctly?", "Previewing", wxOK);
return;
}
wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
frame->Centre(wxBOTH);
frame->Initialize();
frame->Show(TRUE);
}
void MyFrame::OnPrintSetup(wxCommandEvent& WXUNUSED(event))
{
wxPrintDialogData printDialogData(* g_printData);
wxPrintDialog printerDialog(this, & printDialogData);
printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
printerDialog.ShowModal();
(*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
}
void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
{
(*g_pageSetupData) = * g_printData;
wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
pageSetupDialog.ShowModal();
(*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
(*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
}
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
{
wxPostScriptPrinter printer(g_printData);
MyPrintout printout("My printout");
printer.Print(this, &printout, TRUE);
(*g_printData) = printer.GetPrintData();
}
void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
{
// Pass two printout objects: for preview, and possible printing.
wxPrintDialogData printDialogData(* g_printData);
wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printDialogData);
wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650));
frame->Centre(wxBOTH);
frame->Initialize();
frame->Show(TRUE);
}
void MyFrame::OnPrintSetupPS(wxCommandEvent& WXUNUSED(event))
{
wxPrintDialogData printDialogData(* g_printData);
wxGenericPrintDialog printerDialog(this, & printDialogData);
printerDialog.GetPrintDialogData().SetSetupDialog(TRUE);
printerDialog.ShowModal();
(*g_printData) = printerDialog.GetPrintDialogData().GetPrintData();
}
void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
{
(*g_pageSetupData) = * g_printData;
wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
pageSetupDialog.ShowModal();
(*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
(*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
}
#endif
void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
{
(void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart",
"About wxWindows printing demo", wxOK|wxCENTRE);
}
void MyFrame::Draw(wxDC& dc)
{
dc.SetBackground(*wxWHITE_BRUSH);
dc.Clear();
dc.SetFont(* wxGetApp().m_testFont);
dc.SetBackgroundMode(wxTRANSPARENT);
dc.SetBrush(* wxCYAN_BRUSH);
dc.SetPen(* wxRED_PEN);
dc.DrawRectangle(0, 30, 200, 100);
dc.DrawText( wxT("Rectangle 200 by 100"), 40, 40);
dc.DrawEllipse(50, 140, 100, 50);
dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
#if wxUSE_UNICODE
char *test = "Greek (Ελληνικά) Γειά σας -- Hebrew שלום -- Japanese (日本語)";
wxString tmp = wxConvUTF8.cMB2WC( test );
dc.DrawText( tmp, 10, 200 );
#endif
dc.SetPen(* wxBLACK_PEN);
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
wxIcon my_icon = wxICON(mondrian) ;
dc.DrawIcon( my_icon, 100, 100);
}
void MyFrame::OnSize(wxSizeEvent& event )
{
wxFrame::OnSize(event);
}
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
END_EVENT_TABLE()
// Define a constructor for my canvas
MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
wxScrolledWindow(frame, -1, pos, size, style)
{
SetBackgroundColour(* wxWHITE);
}
MyCanvas::~MyCanvas(void)
{
}
// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
{
frame->Draw(dc);
}
void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event))
{
}
bool MyPrintout::OnPrintPage(int page)
{
wxDC *dc = GetDC();
if (dc)
{
if (page == 1)
DrawPageOne(dc);
else if (page == 2)
DrawPageTwo(dc);
dc->SetDeviceOrigin(0, 0);
dc->SetUserScale(1.0, 1.0);
wxChar buf[200];
wxSprintf(buf, wxT("PAGE %d"), page);
dc->DrawText(buf, 10, 10);
return TRUE;
}
else
return FALSE;
}
bool MyPrintout::OnBeginDocument(int startPage, int endPage)
{
if (!wxPrintout::OnBeginDocument(startPage, endPage))
return FALSE;
return TRUE;
}
void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
{
*minPage = 1;
*maxPage = 2;
*selPageFrom = 1;
*selPageTo = 2;
}
bool MyPrintout::HasPage(int pageNum)
{
return (pageNum == 1 || pageNum == 2);
}
void MyPrintout::DrawPageOne(wxDC *dc)
{
/* You might use THIS code if you were scaling
* graphics of known size to fit on the page.
*/
int w, h;
// We know the graphic is 200x200. If we didn't know this,
// we'd need to calculate it.
float maxX = 200;
float maxY = 200;
// Let's have at least 50 device units margin
float marginX = 50;
float marginY = 50;
// Add the margin to the graphic size
maxX += (2*marginX);
maxY += (2*marginY);
// Get the size of the DC in pixels
dc->GetSize(&w, &h);
// Calculate a suitable scaling factor
float scaleX=(float)(w/maxX);
float scaleY=(float)(h/maxY);
// Use x or y scaling factor, whichever fits on the DC
float actualScale = wxMin(scaleX,scaleY);
// Calculate the position on the DC for centring the graphic
float posX = (float)((w - (200*actualScale))/2.0);
float posY = (float)((h - (200*actualScale))/2.0);
// Set the scale and origin
dc->SetUserScale(actualScale, actualScale);
dc->SetDeviceOrigin( (long)posX, (long)posY );
frame->Draw(*dc);
}
void MyPrintout::DrawPageTwo(wxDC *dc)
{
/* You might use THIS code to set the printer DC to ROUGHLY reflect
* the screen text size. This page also draws lines of actual length 5cm
* on the page.
*/
// Get the logical pixels per inch of screen and printer
int ppiScreenX, ppiScreenY;
GetPPIScreen(&ppiScreenX, &ppiScreenY);
int ppiPrinterX, ppiPrinterY;
GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
// This scales the DC so that the printout roughly represents the
// the screen scaling. The text point size _should_ be the right size
// but in fact is too small for some reason. This is a detail that will
// need to be addressed at some point but can be fudged for the
// moment.
float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
// Now we have to check in case our real page size is reduced
// (e.g. because we're drawing to a print preview memory DC)
int pageWidth, pageHeight;
int w, h;
dc->GetSize(&w, &h);
GetPageSizePixels(&pageWidth, &pageHeight);
// If printer pageWidth == current DC width, then this doesn't
// change. But w might be the preview bitmap width, so scale down.
float overallScale = scale * (float)(w/(float)pageWidth);
dc->SetUserScale(overallScale, overallScale);
// Calculate conversion factor for converting millimetres into
// logical units.
// There are approx. 25.1 mm to the inch. There are ppi
// device units to the inch. Therefore 1 mm corresponds to
// ppi/25.1 device units. We also divide by the
// screen-to-printer scaling factor, because we need to
// unscale to pass logical units to DrawLine.
// Draw 50 mm by 50 mm L shape
float logUnitsFactor = (float)(ppiPrinterX/(scale*25.1));
float logUnits = (float)(50*logUnitsFactor);
dc->SetPen(* wxBLACK_PEN);
dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
dc->SetFont(* wxGetApp().m_testFont);
dc->SetBackgroundMode(wxTRANSPARENT);
{ // GetTextExtent demo:
wxString words[7] = {"This ", "is ", "GetTextExtent ", "testing ", "string. ", "Enjoy ", "it!"};
long w, h;
long x = 200, y= 250;
wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
dc->SetFont(fnt);
for (int i = 0; i < 7; i++) {
dc->GetTextExtent(words[i], &w, &h);
dc->DrawRectangle(x, y, w, h);
dc->DrawText(words[i], x, y);
x += w;
}
dc->SetFont(* wxGetApp().m_testFont);
}
dc->DrawText("Some test text", 200, 300 );
// TESTING
int leftMargin = 20;
int rightMargin = 20;
int topMargin = 20;
int bottomMargin = 20;
int pageWidthMM, pageHeightMM;
GetPageSizeMM(&pageWidthMM, &pageHeightMM);
float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
float topMarginLogical = (float)(logUnitsFactor*topMargin);
float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
dc->SetPen(* wxRED_PEN);
dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
(long)rightMarginLogical, (long)topMarginLogical);
dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
(long)rightMarginLogical, (long)bottomMarginLogical);
WritePageHeader(this, dc, "A header", logUnitsFactor);
}
// Writes a header on a page. Margin units are in millimetres.
bool WritePageHeader(wxPrintout *printout, wxDC *dc, char *text, float mmToLogical)
{
/*
static wxFont *headerFont = (wxFont *) NULL;
if (!headerFont)
{
headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
}
dc->SetFont(headerFont);
*/
int pageWidthMM, pageHeightMM;
printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
int leftMargin = 10;
int topMargin = 10;
int rightMargin = 10;
float leftMarginLogical = (float)(mmToLogical*leftMargin);
float topMarginLogical = (float)(mmToLogical*topMargin);
float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
long xExtent, yExtent;
dc->GetTextExtent(text, &xExtent, &yExtent);
float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
dc->DrawText(text, (long)xPos, (long)topMarginLogical);
dc->SetPen(* wxBLACK_PEN);
dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
(long)rightMarginLogical, (long)topMarginLogical+yExtent );
return TRUE;
}