Remove wxRTTI macro for wxComboBox from Motif port.
[wxWidgets.git] / samples / printing / printing.cpp
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1/////////////////////////////////////////////////////////////////////////////
2// Name: samples/printing.cpp
3// Purpose: Printing demo for wxWidgets
4// Author: Julian Smart
5// Modified by: Francesco Montorsi
6// Created: 1995
7// RCS-ID: $Id$
8// Copyright: (c) Julian Smart
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12// For compilers that support precompilation, includes "wx/wx.h".
13#include "wx/wxprec.h"
14
15#ifdef __BORLANDC__
16 #pragma hdrstop
17#endif
18
19#ifndef WX_PRECOMP
20 #include "wx/wx.h"
21 #include "wx/log.h"
22#endif
23
24#if !wxUSE_PRINTING_ARCHITECTURE
25 #error "You must set wxUSE_PRINTING_ARCHITECTURE to 1 in setup.h, and recompile the library."
26#endif
27
28// Set this to 1 if you want to test PostScript printing under MSW.
29// However, you'll also need to edit src/msw/makefile.nt.
30#define wxTEST_POSTSCRIPT_IN_MSW 0
31
32#include <ctype.h>
33#include "wx/metafile.h"
34#include "wx/print.h"
35#include "wx/printdlg.h"
36#include "wx/image.h"
37#include "wx/accel.h"
38
39#if wxTEST_POSTSCRIPT_IN_MSW
40 #include "wx/generic/printps.h"
41 #include "wx/generic/prntdlgg.h"
42#endif
43
44#if wxUSE_GRAPHICS_CONTEXT
45 #include "wx/graphics.h"
46#endif
47
48#ifdef __WXMAC__
49 #include "wx/osx/printdlg.h"
50#endif
51
52#include "printing.h"
53
54#ifndef wxHAS_IMAGES_IN_RESOURCES
55 #include "../sample.xpm"
56#endif
57
58// Global print data, to remember settings during the session
59wxPrintData *g_printData = NULL;
60
61// Global page setup data
62wxPageSetupDialogData* g_pageSetupData = NULL;
63
64
65
66// ----------------------------------------------------------------------------
67// MyApp
68// ----------------------------------------------------------------------------
69
70IMPLEMENT_APP(MyApp)
71
72bool MyApp::OnInit(void)
73{
74 if ( !wxApp::OnInit() )
75 return false;
76
77 wxInitAllImageHandlers();
78
79
80 // init global objects
81 // -------------------
82
83 g_printData = new wxPrintData;
84
85 // You could set an initial paper size here
86#if 0
87 g_printData->SetPaperId(wxPAPER_LETTER); // for Americans
88 g_printData->SetPaperId(wxPAPER_A4); // for everyone else
89#endif
90
91 g_pageSetupData = new wxPageSetupDialogData;
92
93 // copy over initial paper size from print record
94 (*g_pageSetupData) = *g_printData;
95
96 // Set some initial page margins in mm.
97 g_pageSetupData->SetMarginTopLeft(wxPoint(15, 15));
98 g_pageSetupData->SetMarginBottomRight(wxPoint(15, 15));
99
100
101 // init local GUI objects
102 // ----------------------
103
104#if 0
105 wxImage image( wxT("test.jpg") );
106 image.SetAlpha();
107 int i,j;
108 for (i = 0; i < image.GetWidth(); i++)
109 for (j = 0; j < image.GetHeight(); j++)
110 image.SetAlpha( i, j, 50 );
111 m_bitmap = image;
112#endif
113 m_angle = 30;
114 m_testFont.Create(10, wxFONTFAMILY_SWISS, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
115
116
117 // Create the main frame window
118 // ----------------------------
119
120 MyFrame* frame = new MyFrame((wxFrame *) NULL, wxT("wxWidgets Printing Demo"),
121 wxPoint(0, 0), wxSize(400, 400));
122
123 frame->Centre(wxBOTH);
124 frame->Show();
125
126 return true;
127}
128
129int MyApp::OnExit()
130{
131 delete g_printData;
132 delete g_pageSetupData;
133
134 return wxApp::OnExit();
135}
136
137void MyApp::Draw(wxDC&dc)
138{
139 // This routine just draws a bunch of random stuff on the screen so that we
140 // can check that different types of object are being drawn consistently
141 // between the screen image, the print preview image (at various zoom
142 // levels), and the printed page.
143 dc.SetBackground(*wxWHITE_BRUSH);
144 // dc.Clear();
145 dc.SetFont(m_testFont);
146
147 // dc.SetBackgroundMode(wxTRANSPARENT);
148
149 dc.SetPen(*wxBLACK_PEN);
150 dc.SetBrush(*wxLIGHT_GREY_BRUSH);
151
152 dc.DrawRectangle(0, 0, 230, 350);
153 dc.DrawLine(0, 0, 229, 349);
154 dc.DrawLine(229, 0, 0, 349);
155 dc.SetBrush(*wxTRANSPARENT_BRUSH);
156
157 dc.SetBrush(*wxCYAN_BRUSH);
158 dc.SetPen(*wxRED_PEN);
159
160 dc.DrawRoundedRectangle(0, 20, 200, 80, 20);
161
162 dc.DrawText( wxT("Rectangle 200 by 80"), 40, 40);
163
164 dc.SetPen( wxPen(*wxBLACK, 0, wxPENSTYLE_DOT_DASH) );
165 dc.DrawEllipse(50, 140, 100, 50);
166 dc.SetPen(*wxRED_PEN);
167
168 dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
169
170#if wxUSE_UNICODE
171 const char *test = "Hebrew שלום -- Japanese (日本語)";
172 wxString tmp = wxConvUTF8.cMB2WC( test );
173 dc.DrawText( tmp, 10, 200 );
174#endif
175
176 wxPoint points[5];
177 points[0].x = 0;
178 points[0].y = 0;
179 points[1].x = 20;
180 points[1].y = 0;
181 points[2].x = 20;
182 points[2].y = 20;
183 points[3].x = 10;
184 points[3].y = 20;
185 points[4].x = 10;
186 points[4].y = -20;
187 dc.DrawPolygon( 5, points, 20, 250, wxODDEVEN_RULE );
188 dc.DrawPolygon( 5, points, 50, 250, wxWINDING_RULE );
189
190 dc.DrawEllipticArc( 80, 250, 60, 30, 0.0, 270.0 );
191
192 points[0].x = 150;
193 points[0].y = 250;
194 points[1].x = 180;
195 points[1].y = 250;
196 points[2].x = 180;
197 points[2].y = 220;
198 points[3].x = 200;
199 points[3].y = 220;
200 dc.DrawSpline( 4, points );
201
202 dc.DrawArc( 20,10, 10,10, 25,40 );
203
204 wxString str;
205 int i = 0;
206 str.Printf( wxT("---- Text at angle %d ----"), i );
207 dc.DrawRotatedText( str, 100, 300, i );
208
209 i = m_angle;
210 str.Printf( wxT("---- Text at angle %d ----"), i );
211 dc.DrawRotatedText( str, 100, 300, i );
212
213 wxIcon my_icon = wxICON(sample);
214
215 dc.DrawIcon( my_icon, 100, 100);
216
217 if (m_bitmap.IsOk())
218 dc.DrawBitmap( m_bitmap, 10, 10 );
219
220#if wxUSE_GRAPHICS_CONTEXT
221 wxGraphicsContext *gc = NULL;
222
223 wxPrinterDC *printer_dc = wxDynamicCast( &dc, wxPrinterDC );
224 if (printer_dc)
225 gc = wxGraphicsContext::Create( *printer_dc );
226
227 wxWindowDC *window_dc = wxDynamicCast( &dc, wxWindowDC );
228 if (window_dc)
229 gc = wxGraphicsContext::Create( *window_dc );
230
231#ifdef __WXMSW__
232 wxEnhMetaFileDC *emf_dc = wxDynamicCast( &dc, wxEnhMetaFileDC );
233 if (emf_dc)
234 gc = wxGraphicsContext::Create( *emf_dc );
235#endif
236
237 if (gc)
238 {
239 // make a path that contains a circle and some lines, centered at 100,100
240 gc->SetPen( *wxRED_PEN );
241
242 wxGraphicsPath path = gc->CreatePath();
243 path.AddCircle( 50.0, 50.0, 50.0 );
244 path.MoveToPoint(0.0, 50.0);
245 path.AddLineToPoint(100.0, 50.0);
246 path.MoveToPoint(50.0, 0.0);
247 path.AddLineToPoint(50.0, 100.0 );
248 path.CloseSubpath();
249 path.AddRectangle(25.0, 25.0, 50.0, 50.0);
250
251 gc->StrokePath(path);
252
253 // draw some text
254 wxString text("Text by wxGraphicsContext");
255 gc->SetFont( m_testFont, *wxBLACK );
256 gc->DrawText(text, 25.0, 60.0);
257
258 // draw rectangle around the text
259 double w, h, d, el;
260 gc->GetTextExtent(text, &w, &h, &d, &el);
261 gc->SetPen( *wxBLACK_PEN );
262 gc->DrawRectangle(25.0, 60.0, w, h);
263
264 delete gc;
265 }
266#endif
267}
268
269
270// ----------------------------------------------------------------------------
271// MyFrame
272// ----------------------------------------------------------------------------
273
274BEGIN_EVENT_TABLE(MyFrame, wxFrame)
275 EVT_MENU(wxID_EXIT, MyFrame::OnExit)
276 EVT_MENU(wxID_PRINT, MyFrame::OnPrint)
277 EVT_MENU(wxID_PREVIEW, MyFrame::OnPrintPreview)
278 EVT_MENU(WXPRINT_PAGE_SETUP, MyFrame::OnPageSetup)
279 EVT_MENU(wxID_ABOUT, MyFrame::OnPrintAbout)
280#if defined(__WXMSW__) &&wxTEST_POSTSCRIPT_IN_MSW
281 EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
282 EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
283 EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
284#endif
285#ifdef __WXMAC__
286 EVT_MENU(WXPRINT_PAGE_MARGINS, MyFrame::OnPageMargins)
287#endif
288 EVT_MENU(WXPRINT_ANGLEUP, MyFrame::OnAngleUp)
289 EVT_MENU(WXPRINT_ANGLEDOWN, MyFrame::OnAngleDown)
290
291 EVT_MENU_RANGE(WXPRINT_FRAME_MODAL_APP,
292 WXPRINT_FRAME_MODAL_NON,
293 MyFrame::OnPreviewFrameModalityKind)
294END_EVENT_TABLE()
295
296MyFrame::MyFrame(wxFrame *frame, const wxString&title, const wxPoint&pos, const wxSize&size)
297 : wxFrame(frame, wxID_ANY, title, pos, size)
298{
299 m_canvas = NULL;
300 m_previewModality = wxPreviewFrame_AppModal;
301
302#if wxUSE_STATUSBAR
303 // Give us a status line
304 CreateStatusBar(2);
305 SetStatusText(wxT("Printing demo"));
306#endif // wxUSE_STATUSBAR
307
308 // Load icon and bitmap
309 SetIcon( wxICON( sample) );
310
311 // Make a menubar
312 wxMenu *file_menu = new wxMenu;
313
314 file_menu->Append(wxID_PRINT, wxT("&Print..."), wxT("Print"));
315 file_menu->Append(WXPRINT_PAGE_SETUP, wxT("Page Set&up..."), wxT("Page setup"));
316#ifdef __WXMAC__
317 file_menu->Append(WXPRINT_PAGE_MARGINS, wxT("Page Margins..."), wxT("Page margins"));
318#endif
319 file_menu->Append(wxID_PREVIEW, wxT("Print Pre&view"), wxT("Preview"));
320
321 wxMenu * const menuModalKind = new wxMenu;
322 menuModalKind->AppendRadioItem(WXPRINT_FRAME_MODAL_APP, "&App modal");
323 menuModalKind->AppendRadioItem(WXPRINT_FRAME_MODAL_WIN, "&Window modal");
324 menuModalKind->AppendRadioItem(WXPRINT_FRAME_MODAL_NON, "&Not modal");
325 file_menu->AppendSubMenu(menuModalKind, "Preview frame &modal kind");
326#if wxUSE_ACCEL
327 // Accelerators
328 wxAcceleratorEntry entries[1];
329 entries[0].Set(wxACCEL_CTRL, (int) 'V', wxID_PREVIEW);
330 wxAcceleratorTable accel(1, entries);
331 SetAcceleratorTable(accel);
332#endif
333
334#if defined(__WXMSW__) &&wxTEST_POSTSCRIPT_IN_MSW
335 file_menu->AppendSeparator();
336 file_menu->Append(WXPRINT_PRINT_PS, wxT("Print PostScript..."), wxT("Print (PostScript)"));
337 file_menu->Append(WXPRINT_PAGE_SETUP_PS, wxT("Page Setup PostScript..."), wxT("Page setup (PostScript)"));
338 file_menu->Append(WXPRINT_PREVIEW_PS, wxT("Print Preview PostScript"), wxT("Preview (PostScript)"));
339#endif
340
341 file_menu->AppendSeparator();
342 file_menu->Append(WXPRINT_ANGLEUP, wxT("Angle up\tAlt-U"), wxT("Raise rotated text angle"));
343 file_menu->Append(WXPRINT_ANGLEDOWN, wxT("Angle down\tAlt-D"), wxT("Lower rotated text angle"));
344 file_menu->AppendSeparator();
345 file_menu->Append(wxID_EXIT, wxT("E&xit"), wxT("Exit program"));
346
347 wxMenu *help_menu = new wxMenu;
348 help_menu->Append(wxID_ABOUT, wxT("&About"), wxT("About this demo"));
349
350 wxMenuBar *menu_bar = new wxMenuBar;
351
352 menu_bar->Append(file_menu, wxT("&File"));
353 menu_bar->Append(help_menu, wxT("&Help"));
354
355 // Associate the menu bar with the frame
356 SetMenuBar(menu_bar);
357
358
359 // create the canvas
360 // -----------------
361
362 m_canvas = new MyCanvas(this, wxPoint(0, 0), wxSize(100, 100),
363 wxRETAINED|wxHSCROLL|wxVSCROLL);
364
365 // Give it scrollbars: the virtual canvas is 20 * 50 = 1000 pixels in each direction
366 m_canvas->SetScrollbars(20, 20, 50, 50);
367}
368
369void MyFrame::OnExit(wxCommandEvent& WXUNUSED(event))
370{
371 Close(true /*force closing*/);
372}
373
374void MyFrame::OnPrint(wxCommandEvent& WXUNUSED(event))
375{
376 wxPrintDialogData printDialogData(* g_printData);
377
378 wxPrinter printer(&printDialogData);
379 MyPrintout printout(this, wxT("My printout"));
380 if (!printer.Print(this, &printout, true /*prompt*/))
381 {
382 if (wxPrinter::GetLastError() == wxPRINTER_ERROR)
383 {
384 wxLogError(wxT("There was a problem printing. Perhaps your current printer is not set correctly?"));
385 }
386 else
387 {
388 wxLogMessage(wxT("You canceled printing"));
389 }
390 }
391 else
392 {
393 (*g_printData) = printer.GetPrintDialogData().GetPrintData();
394 }
395}
396
397void MyFrame::OnPrintPreview(wxCommandEvent& WXUNUSED(event))
398{
399 // Pass two printout objects: for preview, and possible printing.
400 wxPrintDialogData printDialogData(* g_printData);
401 wxPrintPreview *preview =
402 new wxPrintPreview(new MyPrintout(this), new MyPrintout(this), &printDialogData);
403 if (!preview->IsOk())
404 {
405 delete preview;
406 wxLogError(wxT("There was a problem previewing.\nPerhaps your current printer is not set correctly?"));
407 return;
408 }
409
410 wxPreviewFrame *frame =
411 new wxPreviewFrame(preview, this, wxT("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
412 frame->Centre(wxBOTH);
413 frame->InitializeWithModality(m_previewModality);
414 frame->Show();
415}
416
417void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
418{
419 (*g_pageSetupData) = *g_printData;
420
421 wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
422 pageSetupDialog.ShowModal();
423
424 (*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
425 (*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
426}
427
428#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
429void MyFrame::OnPrintPS(wxCommandEvent& WXUNUSED(event))
430{
431 wxPostScriptPrinter printer(g_printData);
432 MyPrintout printout(wxT("My printout"));
433 printer.Print(this, &printout, true/*prompt*/);
434
435 (*g_printData) = printer.GetPrintData();
436}
437
438void MyFrame::OnPrintPreviewPS(wxCommandEvent& WXUNUSED(event))
439{
440 // Pass two printout objects: for preview, and possible printing.
441 wxPrintDialogData printDialogData(* g_printData);
442 wxPrintPreview *preview = new wxPrintPreview(new MyPrintout, new MyPrintout, &printDialogData);
443 wxPreviewFrame *frame =
444 new wxPreviewFrame(preview, this, wxT("Demo Print Preview"), wxPoint(100, 100), wxSize(600, 650));
445 frame->Centre(wxBOTH);
446 frame->Initialize();
447 frame->Show();
448}
449
450void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
451{
452 (*g_pageSetupData) = * g_printData;
453
454 wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
455 pageSetupDialog.ShowModal();
456
457 (*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
458 (*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
459}
460#endif
461
462#ifdef __WXMAC__
463void MyFrame::OnPageMargins(wxCommandEvent& WXUNUSED(event))
464{
465 (*g_pageSetupData) = *g_printData;
466
467 wxMacPageMarginsDialog pageMarginsDialog(this, g_pageSetupData);
468 pageMarginsDialog.ShowModal();
469
470 (*g_printData) = pageMarginsDialog.GetPageSetupDialogData().GetPrintData();
471 (*g_pageSetupData) = pageMarginsDialog.GetPageSetupDialogData();
472}
473#endif
474
475void MyFrame::OnPrintAbout(wxCommandEvent& WXUNUSED(event))
476{
477 (void)wxMessageBox(wxT("wxWidgets printing demo\nAuthor: Julian Smart"),
478 wxT("About wxWidgets printing demo"), wxOK|wxCENTRE);
479}
480
481void MyFrame::OnAngleUp(wxCommandEvent& WXUNUSED(event))
482{
483 wxGetApp().IncrementAngle();
484 m_canvas->Refresh();
485}
486
487void MyFrame::OnAngleDown(wxCommandEvent& WXUNUSED(event))
488{
489 wxGetApp().DecrementAngle();
490 m_canvas->Refresh();
491}
492
493void MyFrame::OnPreviewFrameModalityKind(wxCommandEvent& event)
494{
495 m_previewModality = static_cast<wxPreviewFrameModalityKind>(
496 wxPreviewFrame_AppModal +
497 (event.GetId() - WXPRINT_FRAME_MODAL_APP));
498}
499
500// ----------------------------------------------------------------------------
501// MyCanvas
502// ----------------------------------------------------------------------------
503
504BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
505 // EVT_PAINT(MyCanvas::OnPaint)
506END_EVENT_TABLE()
507
508MyCanvas::MyCanvas(wxFrame *frame, const wxPoint&pos, const wxSize&size, long style)
509 : wxScrolledWindow(frame, wxID_ANY, pos, size, style)
510{
511 SetBackgroundColour(*wxWHITE);
512}
513
514//void MyCanvas::OnPaint(wxPaintEvent& WXUNUSED(evt))
515void MyCanvas::OnDraw(wxDC& dc)
516{
517 //wxPaintDC dc(this);
518 wxGetApp().Draw(dc);
519}
520
521
522// ----------------------------------------------------------------------------
523// MyPrintout
524// ----------------------------------------------------------------------------
525
526bool MyPrintout::OnPrintPage(int page)
527{
528 wxDC *dc = GetDC();
529 if (dc)
530 {
531 if (page == 1)
532 DrawPageOne();
533 else if (page == 2)
534 DrawPageTwo();
535
536 // Draw page numbers at top left corner of printable area, sized so that
537 // screen size of text matches paper size.
538 MapScreenSizeToPage();
539
540 dc->DrawText(wxString::Format(wxT("PAGE %d"), page), 0, 0);
541
542 return true;
543 }
544 else
545 return false;
546}
547
548bool MyPrintout::OnBeginDocument(int startPage, int endPage)
549{
550 if (!wxPrintout::OnBeginDocument(startPage, endPage))
551 return false;
552
553 return true;
554}
555
556void MyPrintout::GetPageInfo(int *minPage, int *maxPage, int *selPageFrom, int *selPageTo)
557{
558 *minPage = 1;
559 *maxPage = 2;
560 *selPageFrom = 1;
561 *selPageTo = 2;
562}
563
564bool MyPrintout::HasPage(int pageNum)
565{
566 return (pageNum == 1 || pageNum == 2);
567}
568
569void MyPrintout::DrawPageOne()
570{
571 // You might use THIS code if you were scaling graphics of known size to fit
572 // on the page. The commented-out code illustrates different ways of scaling
573 // the graphics.
574
575 // We know the graphic is 230x350. If we didn't know this, we'd need to
576 // calculate it.
577 wxCoord maxX = 230;
578 wxCoord maxY = 350;
579
580 // This sets the user scale and origin of the DC so that the image fits
581 // within the paper rectangle (but the edges could be cut off by printers
582 // that can't print to the edges of the paper -- which is most of them. Use
583 // this if your image already has its own margins.
584// FitThisSizeToPaper(wxSize(maxX, maxY));
585// wxRect fitRect = GetLogicalPaperRect();
586
587 // This sets the user scale and origin of the DC so that the image fits
588 // within the page rectangle, which is the printable area on Mac and MSW
589 // and is the entire page on other platforms.
590// FitThisSizeToPage(wxSize(maxX, maxY));
591// wxRect fitRect = GetLogicalPageRect();
592
593 // This sets the user scale and origin of the DC so that the image fits
594 // within the page margins as specified by g_PageSetupData, which you can
595 // change (on some platforms, at least) in the Page Setup dialog. Note that
596 // on Mac, the native Page Setup dialog doesn't let you change the margins
597 // of a wxPageSetupDialogData object, so you'll have to write your own dialog or
598 // use the Mac-only wxMacPageMarginsDialog, as we do in this program.
599 FitThisSizeToPageMargins(wxSize(maxX, maxY), *g_pageSetupData);
600 wxRect fitRect = GetLogicalPageMarginsRect(*g_pageSetupData);
601
602 // This sets the user scale and origin of the DC so that the image appears
603 // on the paper at the same size that it appears on screen (i.e., 10-point
604 // type on screen is 10-point on the printed page) and is positioned in the
605 // top left corner of the page rectangle (just as the screen image appears
606 // in the top left corner of the window).
607// MapScreenSizeToPage();
608// wxRect fitRect = GetLogicalPageRect();
609
610 // You could also map the screen image to the entire paper at the same size
611 // as it appears on screen.
612// MapScreenSizeToPaper();
613// wxRect fitRect = GetLogicalPaperRect();
614
615 // You might also wish to do you own scaling in order to draw objects at
616 // full native device resolution. In this case, you should do the following.
617 // Note that you can use the GetLogicalXXXRect() commands to obtain the
618 // appropriate rect to scale to.
619// MapScreenSizeToDevice();
620// wxRect fitRect = GetLogicalPageRect();
621
622 // Each of the preceding Fit or Map routines positions the origin so that
623 // the drawn image is positioned at the top left corner of the reference
624 // rectangle. You can easily center or right- or bottom-justify the image as
625 // follows.
626
627 // This offsets the image so that it is centered within the reference
628 // rectangle defined above.
629 wxCoord xoff = (fitRect.width - maxX) / 2;
630 wxCoord yoff = (fitRect.height - maxY) / 2;
631 OffsetLogicalOrigin(xoff, yoff);
632
633 // This offsets the image so that it is positioned at the bottom right of
634 // the reference rectangle defined above.
635// wxCoord xoff = (fitRect.width - maxX);
636// wxCoord yoff = (fitRect.height - maxY);
637// OffsetLogicalOrigin(xoff, yoff);
638
639 wxGetApp().Draw(*GetDC());
640}
641
642void MyPrintout::DrawPageTwo()
643{
644 // You might use THIS code to set the printer DC to ROUGHLY reflect
645 // the screen text size. This page also draws lines of actual length
646 // 5cm on the page.
647
648 // Compare this to DrawPageOne(), which uses the really convenient routines
649 // from wxPrintout to fit the screen image onto the printed page. This page
650 // illustrates how to do all the scaling calculations yourself, if you're so
651 // inclined.
652
653 wxDC *dc = GetDC();
654
655 // Get the logical pixels per inch of screen and printer
656 int ppiScreenX, ppiScreenY;
657 GetPPIScreen(&ppiScreenX, &ppiScreenY);
658 int ppiPrinterX, ppiPrinterY;
659 GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
660
661 // This scales the DC so that the printout roughly represents the screen
662 // scaling. The text point size _should_ be the right size but in fact is
663 // too small for some reason. This is a detail that will need to be
664 // addressed at some point but can be fudged for the moment.
665 float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
666
667 // Now we have to check in case our real page size is reduced (e.g. because
668 // we're drawing to a print preview memory DC)
669 int pageWidth, pageHeight;
670 int w, h;
671 dc->GetSize(&w, &h);
672 GetPageSizePixels(&pageWidth, &pageHeight);
673
674 // If printer pageWidth == current DC width, then this doesn't change. But w
675 // might be the preview bitmap width, so scale down.
676 float overallScale = scale * (float)(w/(float)pageWidth);
677 dc->SetUserScale(overallScale, overallScale);
678
679 // Calculate conversion factor for converting millimetres into logical
680 // units. There are approx. 25.4 mm to the inch. There are ppi device units
681 // to the inch. Therefore 1 mm corresponds to ppi/25.4 device units. We also
682 // divide by the screen-to-printer scaling factor, because we need to
683 // unscale to pass logical units to DrawLine.
684
685 // Draw 50 mm by 50 mm L shape
686 float logUnitsFactor = (float)(ppiPrinterX/(scale*25.4));
687 float logUnits = (float)(50*logUnitsFactor);
688 dc->SetPen(* wxBLACK_PEN);
689 dc->DrawLine(50, 250, (long)(50.0 + logUnits), 250);
690 dc->DrawLine(50, 250, 50, (long)(250.0 + logUnits));
691
692 dc->SetBackgroundMode(wxTRANSPARENT);
693 dc->SetBrush(*wxTRANSPARENT_BRUSH);
694
695 { // GetTextExtent demo:
696 wxString words[7] = { wxT("This "), wxT("is "), wxT("GetTextExtent "),
697 wxT("testing "), wxT("string. "), wxT("Enjoy "), wxT("it!") };
698 wxCoord w, h;
699 long x = 200, y= 250;
700 wxFont fnt(15, wxSWISS, wxNORMAL, wxNORMAL);
701
702 dc->SetFont(fnt);
703
704 for (int i = 0; i < 7; i++)
705 {
706 wxString word = words[i];
707 word.Remove( word.Len()-1, 1 );
708 dc->GetTextExtent(word, &w, &h);
709 dc->DrawRectangle(x, y, w, h);
710 dc->GetTextExtent(words[i], &w, &h);
711 dc->DrawText(words[i], x, y);
712 x += w;
713 }
714
715 }
716
717 dc->SetFont(wxGetApp().GetTestFont());
718
719 dc->DrawText(wxT("Some test text"), 200, 300 );
720
721 // TESTING
722
723 int leftMargin = 20;
724 int rightMargin = 20;
725 int topMargin = 20;
726 int bottomMargin = 20;
727
728 int pageWidthMM, pageHeightMM;
729 GetPageSizeMM(&pageWidthMM, &pageHeightMM);
730
731 float leftMarginLogical = (float)(logUnitsFactor*leftMargin);
732 float topMarginLogical = (float)(logUnitsFactor*topMargin);
733 float bottomMarginLogical = (float)(logUnitsFactor*(pageHeightMM - bottomMargin));
734 float rightMarginLogical = (float)(logUnitsFactor*(pageWidthMM - rightMargin));
735
736 dc->SetPen(* wxRED_PEN);
737 dc->DrawLine( (long)leftMarginLogical, (long)topMarginLogical,
738 (long)rightMarginLogical, (long)topMarginLogical);
739 dc->DrawLine( (long)leftMarginLogical, (long)bottomMarginLogical,
740 (long)rightMarginLogical, (long)bottomMarginLogical);
741
742 WritePageHeader(this, dc, wxT("A header"), logUnitsFactor);
743}
744
745// Writes a header on a page. Margin units are in millimetres.
746bool MyPrintout::WritePageHeader(wxPrintout *printout, wxDC *dc, const wxString&text, float mmToLogical)
747{
748#if 0
749 static wxFont *headerFont = (wxFont *) NULL;
750 if (!headerFont)
751 {
752 headerFont = wxTheFontList->FindOrCreateFont(16, wxSWISS, wxNORMAL, wxBOLD);
753 }
754 dc->SetFont(headerFont);
755#endif
756
757 int pageWidthMM, pageHeightMM;
758
759 printout->GetPageSizeMM(&pageWidthMM, &pageHeightMM);
760 wxUnusedVar(pageHeightMM);
761
762 int leftMargin = 10;
763 int topMargin = 10;
764 int rightMargin = 10;
765
766 float leftMarginLogical = (float)(mmToLogical*leftMargin);
767 float topMarginLogical = (float)(mmToLogical*topMargin);
768 float rightMarginLogical = (float)(mmToLogical*(pageWidthMM - rightMargin));
769
770 wxCoord xExtent, yExtent;
771 dc->GetTextExtent(text, &xExtent, &yExtent);
772
773 float xPos = (float)(((((pageWidthMM - leftMargin - rightMargin)/2.0)+leftMargin)*mmToLogical) - (xExtent/2.0));
774 dc->DrawText(text, (long)xPos, (long)topMarginLogical);
775
776 dc->SetPen(* wxBLACK_PEN);
777 dc->DrawLine( (long)leftMarginLogical, (long)(topMarginLogical+yExtent),
778 (long)rightMarginLogical, (long)topMarginLogical+yExtent );
779
780 return true;
781}