always properly check if SeekI() calls succeded; this makes CanRead() functions of...

[wxWidgets.git] / src / common / dcbase.cpp

diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp
index 12eaa1d211ff82ec2a8245e03cb90b4cdbf96dc2..224cf624a129de802905f74fbdaf7222224b2d0f 100644 (file)
--- a/src/common/dcbase.cpp
+++ b/src/common/dcbase.cpp
@@ -53,9 +53,9 @@
 #endif
 
 #ifdef __WXMAC__
-    #include "wx/mac/dcclient.h"
-    #include "wx/mac/dcmemory.h"
-    #include "wx/mac/dcscreen.h"
+    #include "wx/osx/dcclient.h"
+    #include "wx/osx/dcmemory.h"
+    #include "wx/osx/dcscreen.h"
 #endif
 
 #ifdef __WXPM__
@@ -131,34 +131,25 @@ IMPLEMENT_DYNAMIC_CLASS(wxDCFactoryCleanupModule, wxModule)
 // wxNativeDCFactory
 //-----------------------------------------------------------------------------
 
-wxDCImpl* wxNativeDCFactory::CreateWindowDC( wxWindowDC *owner )
-{
-    return new wxWindowDCImpl( owner );
-}
-
 wxDCImpl* wxNativeDCFactory::CreateWindowDC( wxWindowDC *owner, wxWindow *window )
 {
-    return new wxWindowDCImpl( owner, window );
-}
-
-wxDCImpl* wxNativeDCFactory::CreateClientDC( wxClientDC *owner )
-{
-    return new wxClientDCImpl( owner );
+    wxDCImpl * const impl = new wxWindowDCImpl( owner, window );
+    impl->InheritAttributes(window);
+    return impl;
 }
 
 wxDCImpl* wxNativeDCFactory::CreateClientDC( wxClientDC *owner, wxWindow *window )
 {
-    return new wxClientDCImpl( owner, window );
-}
-
-wxDCImpl* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner )
-{
-    return new wxPaintDCImpl( owner );
+    wxDCImpl * const impl = new wxClientDCImpl( owner, window );
+    impl->InheritAttributes(window);
+    return impl;
 }
 
 wxDCImpl* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner, wxWindow *window )
 {
-    return new wxPaintDCImpl( owner, window );
+    wxDCImpl * const impl = new wxPaintDCImpl( owner, window );
+    impl->InheritAttributes(window);
+    return impl;
 }
 
 wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner )
@@ -166,9 +157,19 @@ wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner )
     return new wxMemoryDCImpl( owner );
 }
 
-wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap )
+wxDCImpl* wxNativeDCFactory::CreateMemoryDC(wxMemoryDC *owner, wxBitmap& bitmap)
 {
-    return new wxMemoryDCImpl( owner, bitmap );
+    // the bitmap may be modified when it's selected into a memory DC so make
+    // sure changing this bitmap doesn't affect any other shallow copies of it
+    // (see wxMemoryDC::SelectObject())
+    //
+    // notice that we don't provide any ctor equivalent to SelectObjectAsSource
+    // method because this should be rarely needed and easy to work around by
+    // using the default ctor and calling SelectObjectAsSource itself
+    if ( bitmap.IsOk() )
+        bitmap.UnShare();
+
+    return new wxMemoryDCImpl(owner, bitmap);
 }
 
 wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxDC *dc )
@@ -299,12 +300,12 @@ wxPrinterDC::wxPrinterDC(const wxPrintData& data)
 {
 }
 
-wxRect wxPrinterDC::GetPaperRect()
+wxRect wxPrinterDC::GetPaperRect() const
 {
     return GetImpl()->GetPaperRect();
 }
 
-int wxPrinterDC::GetResolution()
+int wxPrinterDC::GetResolution() const
 {
     return GetImpl()->GetResolution();
 }
@@ -368,12 +369,12 @@ wxDCImpl::~wxDCImpl()
 
 wxCoord wxDCImpl::DeviceToLogicalX(wxCoord x) const
 {
-    return wxRound((double)(x - m_deviceOriginX - m_deviceLocalOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
+    return wxRound( (double)((x - m_deviceOriginX - m_deviceLocalOriginX) * m_signX) / m_scaleX ) + m_logicalOriginX ;
 }
 
 wxCoord wxDCImpl::DeviceToLogicalY(wxCoord y) const
 {
-    return wxRound((double)(y - m_deviceOriginY - m_deviceLocalOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
+    return wxRound( (double)((y - m_deviceOriginY - m_deviceLocalOriginY) * m_signY) / m_scaleY ) + m_logicalOriginY ;
 }
 
 wxCoord wxDCImpl::DeviceToLogicalXRel(wxCoord x) const
@@ -388,12 +389,12 @@ wxCoord wxDCImpl::DeviceToLogicalYRel(wxCoord y) const
 
 wxCoord wxDCImpl::LogicalToDeviceX(wxCoord x) const
 {
-    return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX * m_signY + m_deviceLocalOriginX;
+    return wxRound( (double)((x - m_logicalOriginX) * m_signX) * m_scaleX) + m_deviceOriginX + m_deviceLocalOriginX;
 }
 
 wxCoord wxDCImpl::LogicalToDeviceY(wxCoord y) const
 {
-    return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY * m_signY + m_deviceLocalOriginY;
+    return wxRound( (double)((y - m_logicalOriginY) * m_signY) * m_scaleY) + m_deviceOriginY + m_deviceLocalOriginY;
 }
 
 wxCoord wxDCImpl::LogicalToDeviceXRel(wxCoord x) const
@@ -412,7 +413,7 @@ void wxDCImpl::ComputeScaleAndOrigin()
     m_scaleY = m_logicalScaleY * m_userScaleY;
 }
 
-void wxDCImpl::SetMapMode( int mode )
+void wxDCImpl::SetMapMode( wxMappingMode mode )
 {
     switch (mode)
     {
@@ -649,7 +650,7 @@ wxDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest,
                         wxDC *source,
                         wxCoord xsrc, wxCoord ysrc,
                         wxCoord srcWidth, wxCoord srcHeight,
-                        int rop,
+                        wxRasterOperationMode rop,
                         bool useMask,
                         wxCoord xsrcMask,
                         wxCoord ysrcMask)
@@ -695,7 +696,7 @@ void wxDCImpl::DrawLines(const wxPointList *list, wxCoord xoffset, wxCoord yoffs
 
 void wxDCImpl::DrawPolygon(const wxPointList *list,
                            wxCoord xoffset, wxCoord yoffset,
-                           int fillStyle)
+                           wxPolygonFillMode fillStyle)
 {
     int n = list->GetCount();
     wxPoint *points = new wxPoint[n];
@@ -718,7 +719,7 @@ wxDCImpl::DoDrawPolyPolygon(int n,
                             int count[],
                             wxPoint points[],
                             wxCoord xoffset, wxCoord yoffset,
-                            int fillStyle)
+                            wxPolygonFillMode fillStyle)
 {
     if ( n == 1 )
     {
@@ -1107,6 +1108,16 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect,
     m_pen.SetColour(oldPenColour);
 }
 
+void wxDCImpl::InheritAttributes(wxWindow *win)
+{
+    wxCHECK_RET( win, "window can't be NULL" );
+
+    SetFont(win->GetFont());
+    SetTextForeground(win->GetForegroundColour());
+    SetTextBackground(win->GetBackgroundColour());
+    SetBackground(wxBrush(win->GetBackgroundColour()));
+}
+
 //-----------------------------------------------------------------------------
 // wxDC
 //-----------------------------------------------------------------------------
@@ -1637,3 +1648,15 @@ void wxDCImpl::CalculateEllipticPoints( wxPointList* points,
 } // CalculateEllipticPoints
 
 #endif // __WXWINCE__
+
+float wxDCImpl::GetFontPointSizeAdjustment(float dpi)
+{
+    // wxMSW has long-standing bug where wxFont point size is interpreted as
+    // "pixel size corresponding to given point size *on screen*". In other
+    // words, on a typical 600dpi printer and a typical 96dpi screen, fonts
+    // are ~6 times smaller when printing. Unfortunately, this bug is so severe
+    // that *all* printing code has to account for it and consequently, other
+    // ports need to emulate this bug too:
+    const wxSize screenPPI = wxGetDisplayPPI();
+    return float(screenPPI.y) / dpi;
+}