#include "wx/dynarray.h"
#include "wx/math.h"
#include "wx/image.h"
-#include "wx/cmndata.h"
+#include "wx/region.h"
+#include "wx/affinematrix2d.h"
#define wxUSE_NEW_DC 1
class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
class WXDLLIMPEXP_FWD_CORE wxPrintData;
+#if wxUSE_GRAPHICS_CONTEXT
+class WXDLLIMPEXP_FWD_CORE wxGraphicsContext;
+#endif
+
// Logical ops
enum wxRasterOperationMode
{
wxMM_POINTS
};
+// Description of text characteristics.
+struct wxFontMetrics
+{
+ wxFontMetrics()
+ {
+ height =
+ ascent =
+ descent =
+ internalLeading =
+ externalLeading =
+ averageWidth = 0;
+ }
+
+ int height, // Total character height.
+ ascent, // Part of the height above the baseline.
+ descent, // Part of the height below the baseline.
+ internalLeading, // Intra-line spacing.
+ externalLeading, // Inter-line spacing.
+ averageWidth; // Average font width, a.k.a. "x-width".
+};
+
#if WXWIN_COMPATIBILITY_2_8
//-----------------------------------------------------------------------------
return NULL;
}
+ virtual void* GetHandle() const { return NULL; }
+
// query dimension, colour deps, resolution
virtual void DoGetSize(int *width, int *height) const = 0;
virtual wxCoord GetCharHeight() const = 0;
virtual wxCoord GetCharWidth() const = 0;
+
+ // The derived classes should really override DoGetFontMetrics() to return
+ // the correct values in the future but for now provide a default
+ // implementation in terms of DoGetTextExtent() to avoid breaking the
+ // compilation of all other ports as wxMSW is the only one to implement it.
+ virtual void DoGetFontMetrics(int *height,
+ int *ascent,
+ int *descent,
+ int *internalLeading,
+ int *externalLeading,
+ int *averageWidth) const;
+
virtual void DoGetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
// clipping
+ // Note that this pure virtual method has an implementation that updates
+ // the values returned by DoGetClippingBox() and so can be called from the
+ // derived class overridden version if it makes sense (i.e. if the clipping
+ // box coordinates are not already updated in some other way).
virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
- wxCoord width, wxCoord height) = 0;
+ wxCoord w, wxCoord h) = 0;
// NB: this function works with device coordinates, not the logical ones!
virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0;
}
virtual void SetLogicalScale(double x, double y);
- virtual void GetLogicalScale(double *x, double *y)
+ virtual void GetLogicalScale(double *x, double *y) const
{
if ( x ) *x = m_logicalScaleX;
if ( y ) *y = m_logicalScaleY;
if ( y ) *y = m_deviceOriginY;
}
+#if wxUSE_DC_TRANSFORM_MATRIX
+ // Transform matrix support is not available in most ports right now
+ // (currently only wxMSW provides it) so do nothing in these methods by
+ // default.
+ virtual bool CanUseTransformMatrix() const
+ { return false; }
+ virtual bool SetTransformMatrix(const wxAffineMatrix2D& WXUNUSED(matrix))
+ { return false; }
+ virtual wxAffineMatrix2D GetTransformMatrix() const
+ { return wxAffineMatrix2D(); }
+ virtual void ResetTransformMatrix()
+ { }
+#endif // wxUSE_DC_TRANSFORM_MATRIX
+
virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y );
virtual void ComputeScaleAndOrigin();
// this needs to overidden if the axis is inverted
virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
+#ifdef __WXMSW__
+ // Native Windows functions using the underlying HDC don't honour GDI+
+ // transformations which may be applied to it. Using this function we can
+ // transform the coordinates manually before passing them to such functions
+ // (as in e.g. wxRendererMSW code). It doesn't do anything if this is not a
+ // wxGCDC.
+ virtual wxRect MSWApplyGDIPlusTransform(const wxRect& r) const
+ {
+ return r;
+ }
+#endif // __WXMSW__
+
+
// ---------------------------------------------------------
// the actual drawing API
virtual int GetResolution() const
{ return -1; }
+#if wxUSE_GRAPHICS_CONTEXT
+ virtual wxGraphicsContext* GetGraphicsContext() const
+ { return NULL; }
+ virtual void SetGraphicsContext( wxGraphicsContext* WXUNUSED(ctx) )
+ {}
+#endif
+
private:
wxDC *m_owner;
wxWindow *GetWindow() const
{ return m_pimpl->GetWindow(); }
+ void *GetHandle() const
+ { return m_pimpl->GetHandle(); }
+
bool IsOk() const
{ return m_pimpl && m_pimpl->IsOk(); }
wxCoord GetCharWidth() const
{ return m_pimpl->GetCharWidth(); }
+ wxFontMetrics GetFontMetrics() const
+ {
+ wxFontMetrics fm;
+ m_pimpl->DoGetFontMetrics(&fm.height, &fm.ascent, &fm.descent,
+ &fm.internalLeading, &fm.externalLeading,
+ &fm.averageWidth);
+ return fm;
+ }
+
void GetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
void SetLogicalScale(double x, double y)
{ m_pimpl->SetLogicalScale( x, y ); }
- void GetLogicalScale(double *x, double *y)
+ void GetLogicalScale(double *x, double *y) const
{ m_pimpl->GetLogicalScale( x, y ); }
void SetLogicalOrigin(wxCoord x, wxCoord y)
void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
{ m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); }
+#if wxUSE_DC_TRANSFORM_MATRIX
+ bool CanUseTransformMatrix() const
+ { return m_pimpl->CanUseTransformMatrix(); }
+
+ bool SetTransformMatrix(const wxAffineMatrix2D &matrix)
+ { return m_pimpl->SetTransformMatrix(matrix); }
+
+ wxAffineMatrix2D GetTransformMatrix() const
+ { return m_pimpl->GetTransformMatrix(); }
+
+ void ResetTransformMatrix()
+ { m_pimpl->ResetTransformMatrix(); }
+#endif // wxUSE_DC_TRANSFORM_MATRIX
+
// mostly internal
void SetDeviceLocalOrigin( wxCoord x, wxCoord y )
{ m_pimpl->SetDeviceLocalOrigin( x, y ); }
#endif // WXWIN_COMPATIBILITY_2_8
#ifdef __WXMSW__
+ // GetHDC() is the simplest way to retrieve an HDC From a wxDC but only
+ // works if this wxDC is GDI-based and fails for GDI+ contexts (and
+ // anything else without HDC, e.g. wxPostScriptDC)
WXHDC GetHDC() const;
+
+ // don't use these methods manually, use GetTempHDC() instead
+ virtual WXHDC AcquireHDC() { return GetHDC(); }
+ virtual void ReleaseHDC(WXHDC WXUNUSED(hdc)) { }
+
+ // helper class holding the result of GetTempHDC() with std::auto_ptr<>-like
+ // semantics, i.e. it is moved when copied
+ class TempHDC
+ {
+ public:
+ TempHDC(wxDC& dc)
+ : m_dc(dc),
+ m_hdc(dc.AcquireHDC())
+ {
+ }
+
+ TempHDC(const TempHDC& thdc)
+ : m_dc(thdc.m_dc),
+ m_hdc(thdc.m_hdc)
+ {
+ const_cast<TempHDC&>(thdc).m_hdc = 0;
+ }
+
+ ~TempHDC()
+ {
+ if ( m_hdc )
+ m_dc.ReleaseHDC(m_hdc);
+ }
+
+ WXHDC GetHDC() const { return m_hdc; }
+
+ private:
+ wxDC& m_dc;
+ WXHDC m_hdc;
+
+ wxDECLARE_NO_ASSIGN_CLASS(TempHDC);
+ };
+
+ // GetTempHDC() also works for wxGCDC (but still not for wxPostScriptDC &c)
+ TempHDC GetTempHDC() { return TempHDC(*this); }
#endif // __WXMSW__
+#if wxUSE_GRAPHICS_CONTEXT
+ virtual wxGraphicsContext* GetGraphicsContext() const
+ {
+ return m_pimpl->GetGraphicsContext();
+ }
+ virtual void SetGraphicsContext( wxGraphicsContext* ctx )
+ {
+ m_pimpl->SetGraphicsContext(ctx);
+ }
+#endif
+
protected:
// ctor takes ownership of the pointer
wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
~wxDCTextColourChanger()
{
- if ( m_colFgOld.Ok() )
+ if ( m_colFgOld.IsOk() )
m_dc.SetTextForeground(m_colFgOld);
}
void Set(const wxColour& col)
{
- if ( !m_colFgOld.Ok() )
+ if ( !m_colFgOld.IsOk() )
m_colFgOld = m_dc.GetTextForeground();
m_dc.SetTextForeground(col);
}
~wxDCPenChanger()
{
- if ( m_penOld.Ok() )
+ if ( m_penOld.IsOk() )
m_dc.SetPen(m_penOld);
}
~wxDCBrushChanger()
{
- if ( m_brushOld.Ok() )
+ if ( m_brushOld.IsOk() )
m_dc.SetBrush(m_brushOld);
}
class WXDLLIMPEXP_CORE wxDCFontChanger
{
public:
- wxDCFontChanger(wxDC& dc, const wxFont& font) : m_dc(dc), m_fontOld(dc.GetFont())
+ wxDCFontChanger(wxDC& dc)
+ : m_dc(dc), m_fontOld()
+ {
+ }
+
+ wxDCFontChanger(wxDC& dc, const wxFont& font)
+ : m_dc(dc), m_fontOld(dc.GetFont())
+ {
+ m_dc.SetFont(font);
+ }
+
+ void Set(const wxFont& font)
{
+ if ( !m_fontOld.IsOk() )
+ m_fontOld = m_dc.GetFont();
m_dc.SetFont(font);
}
~wxDCFontChanger()
{
- if ( m_fontOld.Ok() )
+ if ( m_fontOld.IsOk() )
m_dc.SetFont(m_fontOld);
}
projects / wxWidgets.git / blobdiff