remove always-true test of unsigned >= 0

[wxWidgets.git] / src / x11 / dc.cpp

diff --git a/src/x11/dc.cpp b/src/x11/dc.cpp
index cad69fdf09bd3801055f2d80aeaf32bd2f351d9e..d391e78b9739543ac3c809ba6d3bb814e429384f 100644 (file)
--- a/src/x11/dc.cpp
+++ b/src/x11/dc.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        dc.cpp
+// Name:        src/x11/dc.cpp
 // Purpose:     wxDC class
 // Author:      Julian Smart
 // Modified by:
@@ -9,77 +9,47 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "dc.h"
-#endif
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
 #include "wx/dc.h"
-#include "wx/dcmemory.h"
-#include "wx/defs.h"
-
-IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
+#include "wx/x11/dc.h"
 
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
+#ifndef WX_PRECOMP
+    #include "wx/dcmemory.h"
+#endif
 
-#define mm2inches        0.0393700787402
-#define inches2mm        25.4
-#define mm2twips         56.6929133859
-#define twips2mm         0.0176388888889
-#define mm2pt            2.83464566929
-#define pt2mm            0.352777777778
+IMPLEMENT_ABSTRACT_CLASS(wxX11DCImpl, wxDCImpl)
 
 //-----------------------------------------------------------------------------
 // wxDC
 //-----------------------------------------------------------------------------
 
-wxDC::wxDC()
+wxX11DCImpl::wxX11DCImpl( wxDC *owner ) :
+   wxDCImpl( owner )
 {
-    m_ok = FALSE;
-
-#if 1
-    m_mm_to_pix_x = 1.0;
-    m_mm_to_pix_y = 1.0;
-#else
-    m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() /
-                    (double)wxGetDisplaySizeMM().GetWidth();
-    m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() /
-                    (double)wxGetDisplaySizeMM().GetHeight();
-#endif
-
-    m_needComputeScaleX = FALSE; /* not used yet */
-    m_needComputeScaleY = FALSE; /* not used yet */
-
-    m_logicalFunction = wxCOPY;
+    m_ok = false;
 
     m_pen = *wxBLACK_PEN;
     m_font = *wxNORMAL_FONT;
     m_brush = *wxWHITE_BRUSH;
 
     m_backgroundMode = wxTRANSPARENT;
-
-    m_isInteractive = FALSE;  // ???
 }
 
-void wxDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+void wxX11DCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
 {
-    m_clipping = TRUE;
+    m_clipping = true;
     m_clipX1 = x;
     m_clipY1 = y;
     m_clipX2 = x + width;
     m_clipY2 = y + height;
 }
 
-void wxDC::DestroyClippingRegion()
-{
-    m_clipping = FALSE;
-}
-
-void wxDC::DoGetSizeMM( int* width, int* height ) const
+void wxX11DCImpl::DoGetSizeMM( int* width, int* height ) const
 {
     int w, h;
-    GetSize( &w, &h );
+    DoGetSize( &w, &h );
 
     if ( width )
         *width = int( double(w) / (m_scaleX*m_mm_to_pix_x) );
@@ -88,121 +58,8 @@ void wxDC::DoGetSizeMM( int* width, int* height ) const
 }
 
 // Resolution in pixels per logical inch
-wxSize wxDC::GetPPI() const
+wxSize wxX11DCImpl::GetPPI() const
 {
     // TODO (should probably be pure virtual)
     return wxSize(0, 0);
 }
-
-void wxDC::SetMapMode( int mode )
-{
-    switch (mode)
-    {
-    case wxMM_TWIPS:
-        SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
-        break;
-    case wxMM_POINTS:
-        SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
-        break;
-    case wxMM_METRIC:
-        SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
-        break;
-    case wxMM_LOMETRIC:
-        SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
-        break;
-    default:
-    case wxMM_TEXT:
-        SetLogicalScale( 1.0, 1.0 );
-        break;
-    }
-    if (mode != wxMM_TEXT)
-    {
-        m_needComputeScaleX = TRUE;
-        m_needComputeScaleY = TRUE;
-    }
-}
-
-void wxDC::SetUserScale( double x, double y )
-{
-    // allow negative ? -> no
-    m_userScaleX = x;
-    m_userScaleY = y;
-    ComputeScaleAndOrigin();
-}
-
-void wxDC::SetLogicalScale( double x, double y )
-{
-    // allow negative ?
-    m_logicalScaleX = x;
-    m_logicalScaleY = y;
-    ComputeScaleAndOrigin();
-}
-
-void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y )
-{
-    m_logicalOriginX = x * m_signX;   // is this still correct ?
-    m_logicalOriginY = y * m_signY;
-    ComputeScaleAndOrigin();
-}
-
-void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y )
-{
-    // only wxPostScripDC has m_signX = -1, we override SetDeviceOrigin there
-    m_deviceOriginX = x;
-    m_deviceOriginY = y;
-    ComputeScaleAndOrigin();
-}
-
-void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
-{
-    m_signX = xLeftRight ?  1 : -1;
-    m_signY = yBottomUp  ? -1 :  1;
-    ComputeScaleAndOrigin();
-}
-
-wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
-{
-  return ((wxDC *)this)->XDEV2LOG(x);
-}
-
-wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
-{
-  return ((wxDC *)this)->YDEV2LOG(y);
-}
-
-wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
-{
-  return ((wxDC *)this)->XDEV2LOGREL(x);
-}
-
-wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
-{
-  return ((wxDC *)this)->YDEV2LOGREL(y);
-}
-
-wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
-{
-  return ((wxDC *)this)->XLOG2DEV(x);
-}
-
-wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
-{
-  return ((wxDC *)this)->YLOG2DEV(y);
-}
-
-wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
-{
-  return ((wxDC *)this)->XLOG2DEVREL(x);
-}
-
-wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
-{
-  return ((wxDC *)this)->YLOG2DEVREL(y);
-}
-
-void wxDC::ComputeScaleAndOrigin()
-{
-    m_scaleX = m_logicalScaleX * m_userScaleX;
-    m_scaleY = m_logicalScaleY * m_userScaleY;
-}
-