don't try to paint hidden windows

[wxWidgets.git] / src / msw / printwin.cpp

diff --git a/src/msw/printwin.cpp b/src/msw/printwin.cpp
index 59e6624042370f3d1a79f5817cf2f33c81622472..6856dd94620f9272bdb268f3cbe26b131f956c9a 100644 (file)
--- a/src/msw/printwin.cpp
+++ b/src/msw/printwin.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        printwin.cpp
+// Name:        src/msw/printwin.cpp
 // Purpose:     wxWindowsPrinter framework
 // Author:      Julian Smart
 // Modified by:
@@ -17,10 +17,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "printwin.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -28,13 +24,12 @@
     #pragma hdrstop
 #endif
 
-#include "wx/defs.h"
-
 // Don't use the Windows printer if we're in wxUniv mode and using
 // the PostScript architecture
 #if wxUSE_PRINTING_ARCHITECTURE && (!defined(__WXUNIVERSAL__) || !wxUSE_POSTSCRIPT_ARCHITECTURE_IN_MSW)
 
 #ifndef WX_PRECOMP
+    #include "wx/msw/wrapcdlg.h"
     #include "wx/window.h"
     #include "wx/msw/private.h"
     #include "wx/utils.h"
@@ -42,20 +37,16 @@
     #include "wx/app.h"
     #include "wx/msgdlg.h"
     #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/dcprint.h"
 #endif
 
 #include "wx/msw/printwin.h"
-#include "wx/dcprint.h"
 #include "wx/printdlg.h"
-#include "wx/log.h"
 #include "wx/msw/private.h"
 
 #include <stdlib.h>
 
-#include "wx/msw/private.h"
-
-#include <commdlg.h>
-
 #ifndef __WIN32__
     #include <print.h>
 #endif
@@ -185,7 +176,7 @@ bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt
     wxWindow *win = CreateAbortWindow(parent, printout);
     wxYield();
 
-#if defined(__BORLANDC__) || defined(__GNUWIN32__) || defined(__SALFORDC__) || !defined(__WIN32__)
+#if defined(__WATCOMC__) || defined(__BORLANDC__) || defined(__GNUWIN32__) || defined(__SALFORDC__) || !defined(__WIN32__)
 #ifdef STRICT
     ::SetAbortProc((HDC) dc->GetHDC(), (ABORTPROC) m_lpAbortProc);
 #else
@@ -210,6 +201,7 @@ bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt
         sm_lastError = wxPRINTER_ERROR;
 
         delete dc;
+        return false;
     }
     sm_abortWindow = win;
     sm_abortWindow->Show();
@@ -281,7 +273,7 @@ bool wxWindowsPrinter::Print(wxWindow *parent, wxPrintout *printout, bool prompt
 
     delete dc;
 
-    return (sm_lastError == wxPRINTER_NO_ERROR);
+    return sm_lastError == wxPRINTER_NO_ERROR;
 }
 
 wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
@@ -306,7 +298,7 @@ wxDC* wxWindowsPrinter::PrintDialog(wxWindow *parent)
     return dc;
 }
 
-bool wxWindowsPrinter::Setup(wxWindow *parent)
+bool wxWindowsPrinter::Setup(wxWindow *WXUNUSED(parent))
 {
 #if 0
     // We no longer expose that dialog
@@ -322,7 +314,7 @@ bool wxWindowsPrinter::Setup(wxWindow *parent)
 
     return (ret == wxID_OK);
 #else
-    return wxID_CANCEL;
+    return false;
 #endif
 }
 
@@ -360,28 +352,27 @@ bool wxWindowsPrintPreview::Print(bool interactive)
 
 void wxWindowsPrintPreview::DetermineScaling()
 {
-    HDC dc = ::GetDC(NULL);
+    ScreenHDC dc;
     int screenWidth = ::GetDeviceCaps(dc, HORZSIZE);
-    int screenYRes = ::GetDeviceCaps(dc, VERTRES);
+    int screenXRes = ::GetDeviceCaps(dc, HORZRES);
     int logPPIScreenX = ::GetDeviceCaps(dc, LOGPIXELSX);
     int logPPIScreenY = ::GetDeviceCaps(dc, LOGPIXELSY);
     m_previewPrintout->SetPPIScreen(logPPIScreenX, logPPIScreenY);
 
-    ::ReleaseDC(NULL, dc);
 
     // Get a device context for the currently selected printer
     wxPrinterDC printerDC(m_printDialogData.GetPrintData());
 
     int printerWidth = 150;
-    int printerHeight wxDUMMY_INITIALIZE(250);
     int printerXRes = 1500;
     int printerYRes = 2500;
 
-    dc = GetHdcOf(printerDC);
-    if ( dc )
+    if ( printerDC.Ok() )
     {
+        HDC dc = GetHdcOf(printerDC);
+
         printerWidth = ::GetDeviceCaps(dc, HORZSIZE);
-        printerHeight = ::GetDeviceCaps(dc, VERTSIZE);
+        int printerHeight = ::GetDeviceCaps(dc, VERTSIZE);
         printerXRes = ::GetDeviceCaps(dc, HORZRES);
         printerYRes = ::GetDeviceCaps(dc, VERTRES);
 
@@ -391,18 +382,29 @@ void wxWindowsPrintPreview::DetermineScaling()
         m_previewPrintout->SetPPIPrinter(logPPIPrinterX, logPPIPrinterY);
         m_previewPrintout->SetPageSizeMM(printerWidth, printerHeight);
 
-        if (logPPIPrinterX == 0 || logPPIPrinterY == 0 || printerWidth == 0 || printerHeight == 0)
+        if ( logPPIPrinterX == 0 ||
+                logPPIPrinterY == 0 ||
+                    printerWidth == 0 ||
+                        printerHeight == 0 )
+        {
             m_isOk = false;
+        }
     }
     else
+    {
         m_isOk = false;
+    }
 
     m_pageWidth = printerXRes;
     m_pageHeight = printerYRes;
 
     // At 100%, the page should look about page-size on the screen.
-    m_previewScale = (float)((float)screenWidth/(float)printerWidth);
-    m_previewScale = m_previewScale * (float)((float)screenYRes/(float)printerYRes);
+    //
+    // TODO: the scale could be different in vertical and horizontal directions
+    float screenDPI = (float)screenXRes / screenWidth;
+    float printerDPI = (float)printerXRes / printerWidth;
+
+    m_previewScale = screenDPI / printerDPI;
 }
 
 /****************************************************************************
@@ -428,9 +430,9 @@ LONG APIENTRY _EXPORT wxAbortProc(HDC WXUNUSED(hPr), int WXUNUSED(Code))
             DispatchMessage(&msg);
         }
 
-        /* bAbort is TRUE (return is FALSE) if the user has aborted */
+    /* bAbort is TRUE (return is FALSE) if the user has aborted */
 
-        return (!wxPrinterBase::sm_abortIt);
+    return !wxPrinterBase::sm_abortIt;
 }
 
 #endif