758 lines
25 KiB
C++
758 lines
25 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: samples/printing.cpp
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// Purpose: Printing demo for wxWidgets
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// Author: Julian Smart
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// Modified by: Francesco Montorsi
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// Created: 1995
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#include "wx/log.h"
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#endif
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#if !wxUSE_PRINTING_ARCHITECTURE
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#error "You must set wxUSE_PRINTING_ARCHITECTURE to 1 in setup.h, and recompile the library."
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#endif
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#include <ctype.h>
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#include "wx/metafile.h"
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#include "wx/print.h"
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#include "wx/printdlg.h"
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#include "wx/image.h"
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#include "wx/accel.h"
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#if wxUSE_POSTSCRIPT
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#include "wx/generic/printps.h"
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#include "wx/generic/prntdlgg.h"
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#endif
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/graphics.h"
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#include "wx/scopedptr.h"
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#endif
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#ifdef __WXMAC__
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#include "wx/osx/printdlg.h"
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#endif
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#include "printing.h"
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#ifndef wxHAS_IMAGES_IN_RESOURCES
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#include "../sample.xpm"
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#endif
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// Global print data, to remember settings during the session
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wxPrintData *g_printData = NULL;
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// Global page setup data
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wxPageSetupDialogData* g_pageSetupData = NULL;
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// ----------------------------------------------------------------------------
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// MyApp
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// ----------------------------------------------------------------------------
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wxIMPLEMENT_APP(MyApp);
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bool MyApp::OnInit(void)
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{
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if ( !wxApp::OnInit() )
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return false;
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wxInitAllImageHandlers();
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// init global objects
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// -------------------
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g_printData = new wxPrintData;
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// You could set an initial paper size here
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#if 0
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g_printData->SetPaperId(wxPAPER_LETTER); // for Americans
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g_printData->SetPaperId(wxPAPER_A4); // for everyone else
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#endif
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g_pageSetupData = new wxPageSetupDialogData;
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// copy over initial paper size from print record
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(*g_pageSetupData) = *g_printData;
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// Set some initial page margins in mm.
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g_pageSetupData->SetMarginTopLeft(wxPoint(15, 15));
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g_pageSetupData->SetMarginBottomRight(wxPoint(15, 15));
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// init local GUI objects
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// ----------------------
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#if 0
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wxImage image( "test.jpg" );
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image.SetAlpha();
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int i,j;
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for (i = 0; i < image.GetWidth(); i++)
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for (j = 0; j < image.GetHeight(); j++)
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image.SetAlpha( i, j, 50 );
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m_bitmap = image;
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#endif
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m_angle = 30;
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m_testFont = wxFontInfo(10).Family(wxFONTFAMILY_SWISS);
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// Create the main frame window
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// ----------------------------
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MyFrame* frame = new MyFrame((wxFrame *) NULL, "wxWidgets Printing Demo",
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wxDefaultPosition, wxDefaultSize);
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frame->SetSize(frame->FromDIP(wxSize(400, 400)));
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frame->Centre(wxBOTH);
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frame->Show();
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return true;
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}
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int MyApp::OnExit()
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{
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delete g_printData;
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delete g_pageSetupData;
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return wxApp::OnExit();
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}
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void MyApp::Draw(wxDC&dc)
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{
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// This routine just draws a bunch of random stuff on the screen so that we
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// can check that different types of object are being drawn consistently
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// between the screen image, the print preview image (at various zoom
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// levels), and the printed page.
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dc.SetBackground(*wxWHITE_BRUSH);
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// dc.Clear();
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dc.SetFont(m_testFont);
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// dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
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dc.SetPen(*wxBLACK_PEN);
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dc.SetBrush(*wxLIGHT_GREY_BRUSH);
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dc.DrawRectangle(dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(230), dc.FromDIP(350));
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dc.DrawLine(dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(229), dc.FromDIP(349));
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dc.DrawLine(dc.FromDIP(229), dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(349));
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dc.SetBrush(*wxTRANSPARENT_BRUSH);
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dc.SetBrush(*wxCYAN_BRUSH);
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dc.SetPen(*wxRED_PEN);
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dc.DrawRoundedRectangle(dc.FromDIP(0), dc.FromDIP(20), dc.FromDIP(200), dc.FromDIP(80), 20);
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dc.DrawText( "Rectangle 200 by 80", dc.FromDIP(40), dc.FromDIP(40));
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dc.SetPen( wxPen(*wxBLACK, 0, wxPENSTYLE_DOT_DASH) );
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dc.DrawEllipse(dc.FromDIP(50), dc.FromDIP(140), dc.FromDIP(100), dc.FromDIP(50));
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dc.SetPen(*wxRED_PEN);
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dc.DrawText( "Test message: this is in 10 point text", dc.FromDIP(10), dc.FromDIP(180));
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dc.DrawRotatedText( "This\nis\na multi-line\ntext", dc.FromDIP(170), dc.FromDIP(100), -m_angle/1.5);
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#if wxUSE_UNICODE
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const char *test = "Hebrew שלום -- Japanese (日本語)";
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wxString tmp = wxConvUTF8.cMB2WC( test );
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dc.DrawText( tmp, dc.FromDIP(10), dc.FromDIP(200) );
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#endif
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wxPoint points[5];
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points[0].x = dc.FromDIP(0);
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points[0].y = dc.FromDIP(0);
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points[1].x = dc.FromDIP(20);
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points[1].y = dc.FromDIP(0);
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points[2].x = dc.FromDIP(20);
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points[2].y = dc.FromDIP(20);
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points[3].x = dc.FromDIP(10);
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points[3].y = dc.FromDIP(20);
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points[4].x = dc.FromDIP(10);
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points[4].y = dc.FromDIP(-20);
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dc.DrawPolygon( 5, points, dc.FromDIP(20), dc.FromDIP(250), wxODDEVEN_RULE );
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dc.DrawPolygon( 5, points, dc.FromDIP(50), dc.FromDIP(250), wxWINDING_RULE );
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dc.DrawArc( dc.FromDIP(20), dc.FromDIP(330), dc.FromDIP(40), dc.FromDIP(300), dc.FromDIP(20), dc.FromDIP(300) );
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{
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wxDCBrushChanger changeBrush(dc, *wxTRANSPARENT_BRUSH);
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dc.DrawArc( dc.FromDIP(60), dc.FromDIP(330), dc.FromDIP(80), dc.FromDIP(300), dc.FromDIP(60), dc.FromDIP(300) );
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}
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dc.DrawEllipticArc( dc.FromDIP(80), dc.FromDIP(250), dc.FromDIP(60), dc.FromDIP(30), 0.0, 270.0 );
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points[0].x = dc.FromDIP(150);
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points[0].y = dc.FromDIP(250);
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points[1].x = dc.FromDIP(180);
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points[1].y = dc.FromDIP(250);
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points[2].x = dc.FromDIP(180);
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points[2].y = dc.FromDIP(220);
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points[3].x = dc.FromDIP(200);
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points[3].y = dc.FromDIP(220);
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dc.DrawSpline( 4, points );
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wxString str;
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int i = 0;
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str.Printf( "---- Text at angle %d ----", i );
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dc.DrawRotatedText( str, dc.FromDIP(100), dc.FromDIP(300), i );
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i = m_angle;
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str.Printf( "---- Text at angle %d ----", i );
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dc.DrawRotatedText( str, dc.FromDIP(100), dc.FromDIP(300), i );
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wxIcon my_icon = wxICON(sample);
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dc.DrawIcon( my_icon, dc.FromDIP(100), dc.FromDIP(100));
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if (m_bitmap.IsOk())
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dc.DrawBitmap( m_bitmap, dc.FromDIP(10), dc.FromDIP(10) );
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#if wxUSE_GRAPHICS_CONTEXT
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wxScopedPtr<wxGraphicsContext> gc(wxGraphicsContext::CreateFromUnknownDC(dc));
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if (gc)
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{
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// make a path that contains a circle and some lines, centered at 100,100
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gc->SetPen( *wxRED_PEN );
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wxGraphicsPath path = gc->CreatePath();
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path.AddCircle( gc->FromDIP(50.0), gc->FromDIP(50.0), gc->FromDIP(50.0) );
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path.MoveToPoint(gc->FromDIP(0.0), gc->FromDIP(50.0));
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path.AddLineToPoint(gc->FromDIP(100.0), gc->FromDIP(50.0));
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path.MoveToPoint(gc->FromDIP(50.0), gc->FromDIP(0.0));
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path.AddLineToPoint(gc->FromDIP(50.0), gc->FromDIP(100.0) );
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path.CloseSubpath();
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path.AddRectangle(gc->FromDIP(25.0), gc->FromDIP(25.0), gc->FromDIP(50.0), gc->FromDIP(50.0));
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gc->StrokePath(path);
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// draw some text
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wxString text("Text by wxGraphicsContext");
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gc->SetFont( m_testFont, *wxBLACK );
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gc->DrawText(text, gc->FromDIP(25.0), gc->FromDIP(60.0));
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// draw rectangle around the text
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double w, h;
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gc->GetTextExtent(text, &w, &h);
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gc->SetPen( *wxBLACK_PEN );
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gc->DrawRectangle(gc->FromDIP(25.0), gc->FromDIP(60.0), w, h);
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}
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#endif
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}
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// ----------------------------------------------------------------------------
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// MyFrame
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// ----------------------------------------------------------------------------
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wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(wxID_EXIT, MyFrame::OnExit)
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EVT_MENU(wxID_PRINT, MyFrame::OnPrint)
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EVT_MENU(wxID_PREVIEW, MyFrame::OnPrintPreview)
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EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
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EVT_MENU(wxID_ABOUT, MyFrame::OnPrintAbout)
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#if wxUSE_POSTSCRIPT
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EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
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EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
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EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
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#endif
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#ifdef __WXMAC__
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EVT_MENU(WXPRINT_PAGE_MARGINS, MyFrame::OnPageMargins)
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#endif
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EVT_MENU(WXPRINT_ANGLEUP, MyFrame::OnAngleUp)
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EVT_MENU(WXPRINT_ANGLEDOWN, MyFrame::OnAngleDown)
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EVT_MENU_RANGE(WXPRINT_FRAME_MODAL_APP,
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WXPRINT_FRAME_MODAL_NON,
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MyFrame::OnPreviewFrameModalityKind)
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wxEND_EVENT_TABLE()
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MyFrame::MyFrame(wxFrame *frame, const wxString&title, const wxPoint&pos, const wxSize&size)
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: wxFrame(frame, wxID_ANY, title, pos, size)
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{
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m_canvas = NULL;
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m_previewModality = wxPreviewFrame_AppModal;
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#if wxUSE_STATUSBAR
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// Give us a status line
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CreateStatusBar(2);
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SetStatusText("Printing demo");
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#endif // wxUSE_STATUSBAR
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// Load icon and bitmap
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SetIcon( wxICON( sample) );
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// Make a menubar
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wxMenu *file_menu = new wxMenu;
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file_menu->Append(wxID_PRINT, "&Print...", "Print");
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file_menu->Append(WXPRINT_PAGE_SETUP, "Page Set&up...", "Page setup");
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#ifdef __WXMAC__
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file_menu->Append(WXPRINT_PAGE_MARGINS, "Page Margins...", "Page margins");
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#endif
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file_menu->Append(wxID_PREVIEW, "Print Pre&view", "Preview");
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wxMenu * const menuModalKind = new wxMenu;
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menuModalKind->AppendRadioItem(WXPRINT_FRAME_MODAL_APP, "&App modal");
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menuModalKind->AppendRadioItem(WXPRINT_FRAME_MODAL_WIN, "&Window modal");
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menuModalKind->AppendRadioItem(WXPRINT_FRAME_MODAL_NON, "&Not modal");
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file_menu->AppendSubMenu(menuModalKind, "Preview frame &modal kind");
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#if wxUSE_ACCEL
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// Accelerators
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wxAcceleratorEntry entries[1];
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entries[0].Set(wxACCEL_CTRL, (int) 'V', wxID_PREVIEW);
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wxAcceleratorTable accel(1, entries);
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SetAcceleratorTable(accel);
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#endif
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#if wxUSE_POSTSCRIPT
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file_menu->AppendSeparator();
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file_menu->Append(WXPRINT_PRINT_PS, "Print PostScript...", "Print (PostScript)");
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file_menu->Append(WXPRINT_PAGE_SETUP_PS, "Page Setup PostScript...", "Page setup (PostScript)");
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file_menu->Append(WXPRINT_PREVIEW_PS, "Print Preview PostScript", "Preview (PostScript)");
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#endif
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file_menu->AppendSeparator();
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file_menu->Append(WXPRINT_ANGLEUP, "Angle up\tAlt-U", "Raise rotated text angle");
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file_menu->Append(WXPRINT_ANGLEDOWN, "Angle down\tAlt-D", "Lower rotated text angle");
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file_menu->AppendSeparator();
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file_menu->Append(wxID_EXIT, "E&xit", "Exit program");
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wxMenu *help_menu = new wxMenu;
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help_menu->Append(wxID_ABOUT, "&About", "About this demo");
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wxMenuBar *menu_bar = new wxMenuBar;
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menu_bar->Append(file_menu, "&File");
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menu_bar->Append(help_menu, "&Help");
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// Associate the menu bar with the frame
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SetMenuBar(menu_bar);
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// create the canvas
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// -----------------
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m_canvas = new MyCanvas(this, wxPoint(0, 0), FromDIP(wxSize(100, 100)),
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wxRETAINED|wxHSCROLL|wxVSCROLL);
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// Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
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m_canvas->SetScrollbars(20, 20, 50, 50);
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}
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void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
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{
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Close(true /*force closing*/);
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}
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void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
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{
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wxPrintDialogData printDialogData(* g_printData);
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wxPrinter printer(&printDialogData);
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MyPrintout printout(this, "My printout");
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if (!printer.Print(this, &printout, true /*prompt*/))
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{
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if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
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{
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wxLogError("There was a problem printing. Perhaps your current printer is not set correctly?");
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}
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else
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{
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wxLogMessage("You canceled printing");
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}
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}
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else
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{
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(*g_printData) = printer.GetPrintDialogData().GetPrintData();
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}
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}
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void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
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{
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// Pass two printout objects: for preview, and possible printing.
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wxPrintDialogData printDialogData(* g_printData);
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wxPrintPreview *preview =
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new wxPrintPreview(new MyPrintout(this), new MyPrintout(this), &printDialogData);
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if (!preview->IsOk())
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{
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delete preview;
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wxLogError("There was a problem previewing.\nPerhaps your current printer is not set correctly?");
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return;
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}
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wxPreviewFrame *frame =
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new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), FromDIP(wxSize(600, 650)));
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frame->Centre(wxBOTH);
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frame->InitializeWithModality(m_previewModality);
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frame->Show();
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}
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void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
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{
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(*g_pageSetupData) = *g_printData;
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wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
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pageSetupDialog.ShowModal();
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(*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
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(*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
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}
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#if wxUSE_POSTSCRIPT
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void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
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{
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wxPrintDialogData printDialogData(* g_printData);
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wxPostScriptPrinter printer(&printDialogData);
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MyPrintout printout(this, "My printout");
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printer.Print(this, &printout, true/*prompt*/);
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(*g_printData) = printer.GetPrintDialogData().GetPrintData();
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}
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void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
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{
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// Pass two printout objects: for preview, and possible printing.
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wxPrintDialogData printDialogData(* g_printData);
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wxPrintPreview *preview = new wxPrintPreview(new MyPrintout(this), new MyPrintout(this), &printDialogData);
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wxPreviewFrame *frame =
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new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), FromDIP(wxSize(600, 650)));
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frame->Centre(wxBOTH);
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frame->Initialize();
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frame->Show();
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}
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void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
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{
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(*g_pageSetupData) = * g_printData;
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wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
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pageSetupDialog.ShowModal();
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(*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
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(*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
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}
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#endif
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#ifdef __WXMAC__
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void MyFrame::OnPageMargins(wxCommandEvent& WXUNUSED(event))
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{
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(*g_pageSetupData) = *g_printData;
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wxMacPageMarginsDialog pageMarginsDialog(this, g_pageSetupData);
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pageMarginsDialog.ShowModal();
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(*g_printData) = pageMarginsDialog.GetPageSetupDialogData().GetPrintData();
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(*g_pageSetupData) = pageMarginsDialog.GetPageSetupDialogData();
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}
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#endif
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void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
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{
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(void)wxMessageBox("wxWidgets printing demo\nAuthor: Julian Smart",
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"About wxWidgets printing demo", wxOK|wxCENTRE);
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}
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void MyFrame::OnAngleUp(wxCommandEvent& WXUNUSED(event))
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{
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wxGetApp().IncrementAngle();
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m_canvas->Refresh();
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}
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void MyFrame::OnAngleDown(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
wxGetApp().DecrementAngle();
|
|
m_canvas->Refresh();
|
|
}
|
|
|
|
void MyFrame::OnPreviewFrameModalityKind(wxCommandEvent& event)
|
|
{
|
|
m_previewModality = static_cast<wxPreviewFrameModalityKind>(
|
|
wxPreviewFrame_AppModal +
|
|
(event.GetId() - WXPRINT_FRAME_MODAL_APP));
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// MyCanvas
|
|
// ----------------------------------------------------------------------------
|
|
|
|
wxBEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
|
|
// EVT_PAINT(MyCanvas::OnPaint)
|
|
wxEND_EVENT_TABLE()
|
|
|
|
MyCanvas::MyCanvas(wxFrame *frame, const wxPoint&pos, const wxSize&size, long style)
|
|
: wxScrolledWindow(frame, wxID_ANY, pos, size, style)
|
|
{
|
|
SetBackgroundColour(*wxWHITE);
|
|
}
|
|
|
|
//void MyCanvas::OnPaint(wxPaintEvent& WXUNUSED(evt))
|
|
void MyCanvas::OnDraw(wxDC& dc)
|
|
{
|
|
//wxPaintDC dc(this);
|
|
wxGetApp().Draw(dc);
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// MyPrintout
|
|
// ----------------------------------------------------------------------------
|
|
|
|
bool MyPrintout::OnPrintPage(int page)
|
|
{
|
|
wxDC *dc = GetDC();
|
|
if (dc)
|
|
{
|
|
if (page == 1)
|
|
DrawPageOne();
|
|
else if (page == 2)
|
|
DrawPageTwo();
|
|
|
|
// Draw page numbers at top left corner of printable area, sized so that
|
|
// screen size of text matches paper size.
|
|
MapScreenSizeToPage();
|
|
|
|
dc->DrawText(wxString::Format("PAGE %d", page), 0, 0);
|
|
|
|
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()
|
|
{
|
|
// You might use THIS code if you were scaling graphics of known size to fit
|
|
// on the page. The commented-out code illustrates different ways of scaling
|
|
// the graphics.
|
|
|
|
// We know the graphic is 230x350. If we didn't know this, we'd need to
|
|
// calculate it.
|
|
wxCoord maxX = GetDC()->FromDIP(230);
|
|
wxCoord maxY = GetDC()->FromDIP(350);
|
|
|
|
// This sets the user scale and origin of the DC so that the image fits
|
|
// within the paper rectangle (but the edges could be cut off by printers
|
|
// that can't print to the edges of the paper -- which is most of them. Use
|
|
// this if your image already has its own margins.
|
|
// FitThisSizeToPaper(wxSize(maxX, maxY));
|
|
// wxRect fitRect = GetLogicalPaperRect();
|
|
|
|
// This sets the user scale and origin of the DC so that the image fits
|
|
// within the page rectangle, which is the printable area on Mac and MSW
|
|
// and is the entire page on other platforms.
|
|
// FitThisSizeToPage(wxSize(maxX, maxY));
|
|
// wxRect fitRect = GetLogicalPageRect();
|
|
|
|
// This sets the user scale and origin of the DC so that the image fits
|
|
// within the page margins as specified by g_PageSetupData, which you can
|
|
// change (on some platforms, at least) in the Page Setup dialog. Note that
|
|
// on Mac, the native Page Setup dialog doesn't let you change the margins
|
|
// of a wxPageSetupDialogData object, so you'll have to write your own dialog or
|
|
// use the Mac-only wxMacPageMarginsDialog, as we do in this program.
|
|
FitThisSizeToPageMargins(wxSize(maxX, maxY), *g_pageSetupData);
|
|
wxRect fitRect = GetLogicalPageMarginsRect(*g_pageSetupData);
|
|
|
|
// This sets the user scale and origin of the DC so that the image appears
|
|
// on the paper at the same size that it appears on screen (i.e., 10-point
|
|
// type on screen is 10-point on the printed page) and is positioned in the
|
|
// top left corner of the page rectangle (just as the screen image appears
|
|
// in the top left corner of the window).
|
|
// MapScreenSizeToPage();
|
|
// wxRect fitRect = GetLogicalPageRect();
|
|
|
|
// You could also map the screen image to the entire paper at the same size
|
|
// as it appears on screen.
|
|
// MapScreenSizeToPaper();
|
|
// wxRect fitRect = GetLogicalPaperRect();
|
|
|
|
// You might also wish to do you own scaling in order to draw objects at
|
|
// full native device resolution. In this case, you should do the following.
|
|
// Note that you can use the GetLogicalXXXRect() commands to obtain the
|
|
// appropriate rect to scale to.
|
|
// MapScreenSizeToDevice();
|
|
// wxRect fitRect = GetLogicalPageRect();
|
|
|
|
// Each of the preceding Fit or Map routines positions the origin so that
|
|
// the drawn image is positioned at the top left corner of the reference
|
|
// rectangle. You can easily center or right- or bottom-justify the image as
|
|
// follows.
|
|
|
|
// This offsets the image so that it is centered within the reference
|
|
// rectangle defined above.
|
|
wxCoord xoff = (fitRect.width - maxX) / 2;
|
|
wxCoord yoff = (fitRect.height - maxY) / 2;
|
|
OffsetLogicalOrigin(xoff, yoff);
|
|
|
|
// This offsets the image so that it is positioned at the bottom right of
|
|
// the reference rectangle defined above.
|
|
// wxCoord xoff = (fitRect.width - maxX);
|
|
// wxCoord yoff = (fitRect.height - maxY);
|
|
// OffsetLogicalOrigin(xoff, yoff);
|
|
|
|
wxGetApp().Draw(*GetDC());
|
|
}
|
|
|
|
void MyPrintout::DrawPageTwo()
|
|
{
|
|
// 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.
|
|
|
|
// Compare this to DrawPageOne(), which uses the really convenient routines
|
|
// from wxPrintout to fit the screen image onto the printed page. This page
|
|
// illustrates how to do all the scaling calculations yourself, if you're so
|
|
// inclined.
|
|
|
|
wxDC *dc = GetDC();
|
|
|
|
// 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 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.
|
|
double scale = double(ppiPrinterX) / 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.
|
|
double overallScale = scale * w / pageWidth;
|
|
dc->SetUserScale(overallScale, overallScale);
|
|
|
|
// Calculate conversion factor for converting millimetres into logical
|
|
// units. There are approx. 25.4 mm to the inch. There are ppi device units
|
|
// to the inch. Therefore 1 mm corresponds to ppi/25.4 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
|
|
double logUnitsFactor = ppiPrinterX / (scale * 25.4);
|
|
int logUnits = int(50 * logUnitsFactor);
|
|
dc->SetPen(* wxBLACK_PEN);
|
|
dc->DrawLine(50, 250, 50 + logUnits, 250);
|
|
dc->DrawLine(50, 250, 50, 250 + logUnits);
|
|
|
|
dc->SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
|
|
dc->SetBrush(*wxTRANSPARENT_BRUSH);
|
|
|
|
{ // GetTextExtent demo:
|
|
wxString words[7] = { "This ", "is ", "GetTextExtent ",
|
|
"testing ", "string. ", "Enjoy ", "it!" };
|
|
long x = 200, y= 250;
|
|
|
|
dc->SetFont(wxFontInfo(15).Family(wxFONTFAMILY_SWISS));
|
|
|
|
for (int i = 0; i < 7; i++)
|
|
{
|
|
wxCoord wordWidth, wordHeight;
|
|
wxString word = words[i];
|
|
word.Remove( word.Len()-1, 1 );
|
|
dc->GetTextExtent(word, &wordWidth, &wordHeight);
|
|
dc->DrawRectangle(x, y, wordWidth, wordHeight);
|
|
dc->GetTextExtent(words[i], &wordWidth, &wordHeight);
|
|
dc->DrawText(words[i], x, y);
|
|
x += wordWidth;
|
|
}
|
|
|
|
}
|
|
|
|
dc->SetFont(wxGetApp().GetTestFont());
|
|
|
|
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);
|
|
|
|
int leftMarginLogical = int(logUnitsFactor * leftMargin);
|
|
int topMarginLogical = int(logUnitsFactor * topMargin);
|
|
int bottomMarginLogical = int(logUnitsFactor * (pageHeightMM - bottomMargin));
|
|
int rightMarginLogical = int(logUnitsFactor * (pageWidthMM - rightMargin));
|
|
|
|
dc->SetPen(* wxRED_PEN);
|
|
dc->DrawLine(leftMarginLogical, topMarginLogical,
|
|
rightMarginLogical, topMarginLogical);
|
|
dc->DrawLine(leftMarginLogical, bottomMarginLogical,
|
|
rightMarginLogical, bottomMarginLogical);
|
|
|
|
WritePageHeader(this, dc, "A header", logUnitsFactor);
|
|
}
|
|
|
|
// Writes a header on a page. Margin units are in millimetres.
|
|
bool MyPrintout::WritePageHeader(wxPrintout *printout, wxDC *dc, const wxString&text, double mmToLogical)
|
|
{
|
|
int pageWidthMM, pageHeightMM;
|
|
|
|
printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
|
|
wxUnusedVar(pageHeightMM);
|
|
|
|
int leftMargin = 10;
|
|
int topMargin = 10;
|
|
int rightMargin = 10;
|
|
|
|
int leftMarginLogical = int(mmToLogical * leftMargin);
|
|
int topMarginLogical = int(mmToLogical * topMargin);
|
|
int rightMarginLogical = int(mmToLogical * (pageWidthMM - rightMargin));
|
|
|
|
wxCoord xExtent, yExtent;
|
|
dc->GetTextExtent(text, &xExtent, &yExtent);
|
|
|
|
int xPos = int(((((pageWidthMM - leftMargin - rightMargin) / 2.0) + leftMargin) * mmToLogical) - (xExtent / 2.0));
|
|
dc->DrawText(text, xPos, topMarginLogical);
|
|
|
|
dc->SetPen(* wxBLACK_PEN);
|
|
dc->DrawLine(leftMarginLogical, topMarginLogical + yExtent,
|
|
rightMarginLogical, topMarginLogical + yExtent);
|
|
|
|
return true;
|
|
}
|