X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ad813b00d5956f35f2b1585a276095e24ce8ad5a..59840ba3b16e4baf3228dd79c6b7ae40b55cf488:/samples/printing/printing.cpp?ds=sidebyside diff --git a/samples/printing/printing.cpp b/samples/printing/printing.cpp index 2deb53b0fd..45703a7f3d 100644 --- a/samples/printing/printing.cpp +++ b/samples/printing/printing.cpp @@ -1,13 +1,13 @@ -/* - * File: printing.cc - * Purpose: Printing demo for wxWindows class library - * Author: Julian Smart - * Created: 1995 - * Updated: - * Copyright: (c) 1995, AIAI, University of Edinburgh - */ - -/* static const char sccsid[] = "%W% %G%"; */ +///////////////////////////////////////////////////////////////////////////// +// Name: printing.cpp +// Purpose: Printing demo for wxWindows +// Author: Julian Smart +// Modified by: +// Created: 1995 +// RCS-ID: $Id$ +// Copyright: (c) Julian Smart +// Licence: wxWindows licence +///////////////////////////////////////////////////////////////////////////// #ifdef __GNUG__ #pragma implementation @@ -52,7 +52,13 @@ // Declare a frame MyFrame *frame = (MyFrame *) NULL; -int orientation = wxPORTRAIT; +// 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) @@ -68,230 +74,252 @@ MyApp::MyApp() // main frame bool MyApp::OnInit(void) { - m_testFont = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL); - - // 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; + m_testFont = new wxFont(10, wxSWISS, wxNORMAL, wxNORMAL); + + g_printData = new wxPrintData; + g_pageSetupData = new wxPageSetupDialogData; - 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"); + // Compatibility with old system. In fact, we might keep wxThePrintSetupData + // just for useful default values which we can optionally assign to our + // own print data object. +#if defined(__WXGTK__) || defined(__WXMOTIF__) + (*g_printData) = * wxThePrintSetupData; +#endif + + // 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); - -#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; +#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; - return 1; + 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) +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) +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) +wxFrame(frame, -1, title, pos, size) { - canvas = (MyCanvas *) NULL; + canvas = (MyCanvas *) NULL; } void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event)) { - Close(TRUE); + Close(TRUE); } void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event)) { - wxPrinter printer; - MyPrintout printout("My printout"); - if (!printer.Print(this, &printout, TRUE)) - wxMessageBox("There was a problem printing.\nPerhaps your current printer is not set correctly?", "Printing", wxOK); + 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)) { - wxPrintData printData; - printData.SetOrientation(orientation); - - // Pass two printout objects: for preview, and possible printing. - wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData); - if (!preview->Ok()) - { + // 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); + } + + 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)) { - wxPrintData data; - data.SetOrientation(orientation); - - wxPrintDialog printerDialog(this, & data); - - printerDialog.GetPrintData().SetSetupDialog(TRUE); - printerDialog.ShowModal(); + wxPrintDialogData printDialogData(* g_printData); + wxPrintDialog printerDialog(this, & printDialogData); + + printerDialog.GetPrintDialogData().SetSetupDialog(TRUE); + printerDialog.ShowModal(); - orientation = printerDialog.GetPrintData().GetOrientation(); + (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData(); } void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event)) { - wxPageSetupData data; - data.SetOrientation(orientation); + (*g_pageSetupData) = * g_printData; - wxPageSetupDialog pageSetupDialog(this, & data); - pageSetupDialog.ShowModal(); - - data = pageSetupDialog.GetPageSetupData(); - orientation = data.GetOrientation(); + 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; - MyPrintout printout("My printout"); - printer.Print(this, &printout, TRUE); + wxPostScriptPrinter printer(g_printData); + MyPrintout printout("My printout"); + printer.Print(this, &printout, TRUE); + + (*g_printData) = printer.GetPrintData(); } void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event)) { - wxPrintData printData; - printData.SetOrientation(orientation); - - // Pass two printout objects: for preview, and possible printing. - wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, & printData); - wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(100, 100), wxSize(600, 650)); - frame->Centre(wxBOTH); - frame->Initialize(); - frame->Show(TRUE); + // 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)) { - wxPrintData data; - data.SetOrientation(orientation); + wxPrintDialogData printDialogData(* g_printData); + wxGenericPrintDialog printerDialog(this, & printDialogData); - wxGenericPrintDialog printerDialog(this, & data); - printerDialog.GetPrintData().SetSetupDialog(TRUE); - printerDialog.ShowModal(); + printerDialog.GetPrintDialogData().SetSetupDialog(TRUE); + printerDialog.ShowModal(); - orientation = printerDialog.GetPrintData().GetOrientation(); + (*g_printData) = printerDialog.GetPrintDialogData().GetPrintData(); } void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event)) { - wxPageSetupData data; - data.SetOrientation(orientation); + (*g_pageSetupData) = * g_printData; - wxGenericPageSetupDialog pageSetupDialog(this, & data); - pageSetupDialog.ShowModal(); + wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData); + pageSetupDialog.ShowModal(); - orientation = pageSetupDialog.GetPageSetupData().GetOrientation(); + (*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData(); + (*g_pageSetupData) = pageSetupDialog.GetPageSetupData(); } #endif void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event)) { - (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk", - "About wxWindows printing demo", wxOK|wxCENTRE); + (void)wxMessageBox("wxWindows printing demo\nAuthor: Julian Smart julian.smart@ukonline.co.uk", + "About wxWindows printing demo", wxOK|wxCENTRE); } void MyFrame::Draw(wxDC& dc) { - dc.SetFont(* wxGetApp().m_testFont); - - dc.SetBackgroundMode(wxTRANSPARENT); - - dc.SetBrush(* wxCYAN_BRUSH); - dc.SetPen(* wxRED_PEN); - - dc.DrawRectangle(0, 30, 200, 100); - dc.DrawText("Rectangle 200 by 100", 40, 40); - - dc.DrawEllipse(50, 140, 100, 50); - - dc.DrawText("Test message: this is in 10 point text", 10, 180); - - 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); + 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("Rectangle 200 by 100", 40, 40); + + dc.DrawEllipse(50, 140, 100, 50); + + dc.DrawText("Test message: this is in 10 point text", 10, 180); + + 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 ) @@ -300,13 +328,14 @@ void MyFrame::OnSize(wxSizeEvent& event ) } BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) - EVT_MOUSE_EVENTS(MyCanvas::OnEvent) +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) + wxScrolledWindow(frame, -1, pos, size, style) { + SetBackgroundColour(* wxWHITE); } MyCanvas::~MyCanvas(void) @@ -316,7 +345,7 @@ MyCanvas::~MyCanvas(void) // Define the repainting behaviour void MyCanvas::OnDraw(wxDC& dc) { - frame->Draw(dc); + frame->Draw(dc); } void MyCanvas::OnEvent(wxMouseEvent& WXUNUSED(event)) @@ -325,196 +354,212 @@ 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); - - char buf[200]; - sprintf(buf, "PAGE %d", page); - dc->DrawText(buf, 10, 10); - - return TRUE; - } - else - return FALSE; + 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); + + char buf[200]; + sprintf(buf, "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; + 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; + *minPage = 1; + *maxPage = 2; + *selPageFrom = 1; + *selPageTo = 2; } bool MyPrintout::HasPage(int pageNum) { - return (pageNum == 1 || pageNum == 2); + 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); +* 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); - - dc->DrawText("Some test text", 200, 200 ); - - // 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); +* 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); + + dc->DrawText("Some test text", 200, 200 ); + + { // 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); + } + + // 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; +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; }