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Robert Lang's patch [ 1583183 ] Fixes printing/print preview inconsistencies

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42522 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2006-10-27 13:07:40 +00:00
parent ea28077683
commit f415cab9ef
32 changed files with 1308 additions and 294 deletions
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204
samples/printing/printing.cpp
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@@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////////
// Name: printing.cpp
// Name: samples/printing.cpp
// Purpose: Printing demo for wxWidgets
// Author: Julian Smart
// Modified by:
@@ -40,6 +40,10 @@
#include "wx/generic/prntdlgg.h"
#endif
#ifdef __WXMAC__
#include "wx/mac/printdlg.h"
#endif
#include "printing.h"
#ifndef __WXMSW__
@@ -60,7 +64,7 @@ MyFrame *frame = (MyFrame *) NULL;
wxPrintData *g_printData = (wxPrintData*) NULL ;
// Global page setup data
wxPageSetupData* g_pageSetupData = (wxPageSetupData*) NULL;
wxPageSetupDialogData* g_pageSetupData = (wxPageSetupDialogData*) NULL;
// Main proc
IMPLEMENT_APP(MyApp)
@@ -78,10 +82,20 @@ bool MyApp::OnInit(void)
m_testFont.Create(10, wxSWISS, wxNORMAL, wxNORMAL);
g_printData = new wxPrintData;
// Set an initial paper size
// g_printData->SetPaperId(wxPAPER_LETTER); // for Americans
g_printData->SetPaperId(wxPAPER_A4); // for everyone else
g_pageSetupData = new wxPageSetupDialogData;
// copy over initial paper size from print record
(*g_pageSetupData) = *g_printData;
// Set some initial page margins in mm.
g_pageSetupData->SetMarginTopLeft(wxPoint(15, 15));
g_pageSetupData->SetMarginBottomRight(wxPoint(15, 15));
// Create the main frame window
frame = new MyFrame((wxFrame *) NULL, _T("wxWidgets Printing Demo"), wxPoint(0, 0), wxSize(400, 400));
frame = new MyFrame((wxFrame *) NULL, _T("wxWidgets Printing Demo"),
wxPoint(0, 0), wxSize(400, 400));
#if wxUSE_STATUSBAR
// Give it a status line
@@ -96,6 +110,9 @@ bool MyApp::OnInit(void)
file_menu->Append(WXPRINT_PRINT, _T("&Print..."), _T("Print"));
file_menu->Append(WXPRINT_PAGE_SETUP, _T("Page Set&up..."), _T("Page setup"));
#ifdef __WXMAC__
file_menu->Append(WXPRINT_PAGE_MARGINS, _T("Page Margins..."), _T("Page margins"));
#endif
file_menu->Append(WXPRINT_PREVIEW, _T("Print Pre&view"), _T("Preview"));
#if wxUSE_ACCEL
@@ -112,6 +129,7 @@ bool MyApp::OnInit(void)
file_menu->Append(WXPRINT_PAGE_SETUP_PS, _T("Page Setup PostScript..."), _T("Page setup (PostScript)"));
file_menu->Append(WXPRINT_PREVIEW_PS, _T("Print Preview PostScript"), _T("Preview (PostScript)"));
#endif
file_menu->AppendSeparator();
file_menu->Append(WXPRINT_ANGLEUP, _T("Angle up\tAlt-U"), _T("Raise rotated text angle"));
file_menu->Append(WXPRINT_ANGLEDOWN, _T("Angle down\tAlt-D"), _T("Lower rotated text angle"));
@@ -166,6 +184,9 @@ EVT_MENU(WXPRINT_PRINT_PS, MyFrame::OnPrintPS)
EVT_MENU(WXPRINT_PREVIEW_PS, MyFrame::OnPrintPreviewPS)
EVT_MENU(WXPRINT_PAGE_SETUP_PS, MyFrame::OnPageSetupPS)
#endif
#ifdef __WXMAC__
EVT_MENU(WXPRINT_PAGE_MARGINS, MyFrame::OnPageMargins)
#endif
EVT_MENU(WXPRINT_ANGLEUP, MyFrame::OnAngleUp)
EVT_MENU(WXPRINT_ANGLEDOWN, MyFrame::OnAngleDown)
END_EVENT_TABLE()
@@ -236,8 +257,8 @@ void MyFrame::OnPageSetup(wxCommandEvent& WXUNUSED(event))
wxPageSetupDialog pageSetupDialog(this, g_pageSetupData);
pageSetupDialog.ShowModal();
(*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
(*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
(*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
(*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
}
#if defined(__WXMSW__) && wxTEST_POSTSCRIPT_IN_MSW
@@ -268,8 +289,22 @@ void MyFrame::OnPageSetupPS(wxCommandEvent& WXUNUSED(event))
wxGenericPageSetupDialog pageSetupDialog(this, g_pageSetupData);
pageSetupDialog.ShowModal();
(*g_printData) = pageSetupDialog.GetPageSetupData().GetPrintData();
(*g_pageSetupData) = pageSetupDialog.GetPageSetupData();
(*g_printData) = pageSetupDialog.GetPageSetupDialogData().GetPrintData();
(*g_pageSetupData) = pageSetupDialog.GetPageSetupDialogData();
}
#endif
#ifdef __WXMAC__
void MyFrame::OnPageMargins(wxCommandEvent& WXUNUSED(event))
{
(*g_pageSetupData) = *g_printData;
wxMacPageMarginsDialog pageMarginsDialog(this, g_pageSetupData);
pageMarginsDialog.ShowModal();
(*g_printData) = pageMarginsDialog.GetPageSetupDialogData().GetPrintData();
(*g_pageSetupData) = pageMarginsDialog.GetPageSetupDialogData();
}
#endif
@@ -294,12 +329,23 @@ void MyFrame::OnAngleDown(wxCommandEvent& WXUNUSED(event))
void MyFrame::Draw(wxDC& dc)
{
// This routine just draws a bunch of random stuff on the screen so that we
// can check that different types of object are being drawn consistently
// between the screen image, the print preview image (at various zoom
// levels), and the printed page.
dc.SetBackground(*wxWHITE_BRUSH);
dc.Clear();
dc.SetFont(wxGetApp().m_testFont);
dc.SetBackgroundMode(wxTRANSPARENT);
dc.SetPen(*wxBLACK_PEN);
dc.SetBrush(*wxLIGHT_GREY_BRUSH);
dc.DrawRectangle(0, 0, 230, 350);
dc.DrawLine(0, 0, 229, 349);
dc.DrawLine(229, 0, 0, 349);
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.SetBrush(*wxCYAN_BRUSH);
dc.SetPen(*wxRED_PEN);
@@ -313,7 +359,6 @@ void MyFrame::Draw(wxDC& dc)
dc.DrawText( wxT("Test message: this is in 10 point text"), 10, 180);
#if wxUSE_UNICODE
char *test = "Hebrew שלום -- Japanese (日本語)";
wxString tmp = wxConvUTF8.cMB2WC( test );
@@ -357,10 +402,6 @@ void MyFrame::Draw(wxDC& dc)
str.Printf( wxT("---- Text at angle %d ----"), i );
dc.DrawRotatedText( str, 100, 300, i );
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);
@@ -378,14 +419,12 @@ BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
END_EVENT_TABLE()
// Define a constructor for my canvas
MyCanvas::MyCanvas(wxFrame *frame, const wxPoint& pos, const wxSize& size, long style):
wxScrolledWindow(frame, wxID_ANY, pos, size, style)
{
SetBackgroundColour(* wxWHITE);
}
// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
{
frame->Draw(dc);
@@ -401,16 +440,16 @@ bool MyPrintout::OnPrintPage(int page)
if (dc)
{
if (page == 1)
DrawPageOne(dc);
DrawPageOne();
else if (page == 2)
DrawPageTwo(dc);
dc->SetDeviceOrigin(0, 0);
dc->SetUserScale(1.0, 1.0);
DrawPageTwo();
// Draw page numbers at top left corner of printable area, sized so that
// screen size of text matches paper size.
MapScreenSizeToPage();
wxChar buf[200];
wxSprintf(buf, wxT("PAGE %d"), page);
dc->DrawText(buf, 10, 10);
dc->DrawText(buf, 0, 0);
return true;
}
@@ -439,83 +478,120 @@ bool MyPrintout::HasPage(int pageNum)
return (pageNum == 1 || pageNum == 2);
}
void MyPrintout::DrawPageOne(wxDC *dc)
void MyPrintout::DrawPageOne()
{
// You might use THIS code if you were scaling
// graphics of known size to fit on the page.
// 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 200x200. If we didn't know this,
// we'd need to calculate it.
float maxX = 200;
float maxY = 200;
// We know the graphic is 230x350. If we didn't know this, we'd need to
// calculate it.
wxCoord maxX = 230;
wxCoord maxY = 350;
// Let's have at least 50 device units margin
float marginX = 50;
float marginY = 50;
// 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();
// Add the margin to the graphic size
maxX += (2*marginX);
maxY += (2*marginY);
// 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();
// Get the size of the DC in pixels
int w, h;
dc->GetSize(&w, &h);
// 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);
// Calculate a suitable scaling factor
float scaleX=(float)(w/maxX);
float scaleY=(float)(h/maxY);
// 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();
// Use x or y scaling factor, whichever fits on the DC
float actualScale = wxMin(scaleX,scaleY);
// You could also map the screen image to the entire paper at the same size
// as it appears on screen.
// MapScreenSizeToPaper();
// wxRect fitRect = GetLogicalPaperRect();
// 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);
// 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();
// Set the scale and origin
dc->SetUserScale(actualScale, actualScale);
dc->SetDeviceOrigin( (long)posX, (long)posY );
// 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.
frame->Draw(*dc);
// 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);
frame->Draw(*GetDC());
}
void MyPrintout::DrawPageTwo(wxDC *dc)
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
// 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.
// 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)
// 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.
// 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. 25.4 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
// 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