virtual Bitmap* GetGDIPlusBitmap() { return m_bitmap; }
+#if wxUSE_IMAGE
+ wxImage ConvertToImage() const;
+#endif // wxUSE_IMAGE
+
private :
Bitmap* m_bitmap;
Bitmap* m_helper;
virtual Brush* GetGDIPlusBrush() { return m_textBrush; }
virtual Font* GetGDIPlusFont() { return m_font; }
+
private :
+ // Common part of all ctors, flags here is a combination of values of
+ // FontStyle GDI+ enum.
+ void Init(const wxString& name,
+ REAL size,
+ int style,
+ const wxColour& col,
+ Unit fontUnit = UnitPixel);
+
Brush* m_textBrush;
Font* m_font;
};
wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height );
wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd );
wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr);
- wxGDIPlusContext();
+ wxGDIPlusContext(wxGraphicsRenderer* renderer);
virtual ~wxGDIPlusContext();
wxDouble m_fontScaleRatio;
-private:
- void Init();
- void SetDefaults();
+ // Used from ctors (including those in the derived classes) and takes
+ // ownership of the graphics pointer that must be non-NULL.
+ void Init(Graphics* graphics, int width, int height);
+private:
virtual void DoDrawText(const wxString& str, wxDouble x, wxDouble y)
{ DoDrawFilledText(str, x, y, wxNullGraphicsBrush); }
virtual void DoDrawFilledText(const wxString& str, wxDouble x, wxDouble y,
wxDECLARE_NO_COPY_CLASS(wxGDIPlusContext);
};
-class wxGDIPlusMeasuringContext : public wxGDIPlusContext
+#if wxUSE_IMAGE
+
+class wxGDIPlusImageContext : public wxGDIPlusContext
{
public:
- wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL), 1000, 1000 )
+ wxGDIPlusImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
+ wxGDIPlusContext(renderer),
+ m_image(image),
+ m_bitmap(renderer, image)
+ {
+ Init
+ (
+ new Graphics(m_bitmap.GetGDIPlusBitmap()),
+ image.GetWidth(),
+ image.GetHeight()
+ );
+ }
+
+ virtual ~wxGDIPlusImageContext()
{
+ m_image = m_bitmap.ConvertToImage();
}
- wxGDIPlusMeasuringContext()
+
+private:
+ wxImage& m_image;
+ wxGDIPlusBitmapData m_bitmap;
+
+ wxDECLARE_NO_COPY_CLASS(wxGDIPlusImageContext);
+};
+
+#endif // wxUSE_IMAGE
+
+class wxGDIPlusMeasuringContext : public wxGDIPlusContext
+{
+public:
+ wxGDIPlusMeasuringContext( wxGraphicsRenderer* renderer ) : wxGDIPlusContext( renderer , m_hdc = GetDC(NULL), 1000, 1000 )
{
}
virtual wxGraphicsContext * CreateContext( wxWindow* window );
+#if wxUSE_IMAGE
+ virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
+#endif // wxUSE_IMAGE
+
virtual wxGraphicsContext * CreateMeasuringContext();
// Path
// create a native bitmap representation
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
+#if wxUSE_IMAGE
+ virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
+#endif // wxUSE_IMAGE
// stub: should not be called directly
virtual wxGraphicsFont CreateFont( const wxFont& WXUNUSED(font),
// wxGDIPlusFont implementation
//-----------------------------------------------------------------------------
+void
+wxGDIPlusFontData::Init(const wxString& name,
+ REAL size,
+ int style,
+ const wxColour& col,
+ Unit fontUnit)
+{
+ // This scaling is needed when we use unit other than the
+ // default UnitPoint. It works for both display and printing.
+ size *= 100.0f / 72.0f;
+
+ m_font = new Font(name, size, style, fontUnit);
+
+ m_textBrush = new SolidBrush(wxColourToColor(col));
+}
+
wxGDIPlusFontData::wxGDIPlusFontData( wxGraphicsRenderer* renderer,
const wxGDIPlusContext* gc,
const wxFont &font,
const wxColour& col )
: wxGraphicsObjectRefData( renderer )
{
- wxWCharBuffer s = font.GetFaceName().wc_str( *wxConvUI );
int style = FontStyleRegular;
if ( font.GetStyle() == wxFONTSTYLE_ITALIC )
style |= FontStyleItalic;
if ( fontUnit == UnitDisplay )
fontUnit = UnitPixel;
- REAL points = font.GetPointSize();
-
- // This scaling is needed when we use unit other than the
- // default UnitPoint. It works for both display and printing.
- REAL size = points * (100.0 / 72.0);
-
// NB: font unit should match context's unit. We can use UnitPixel,
// as that is what the print context should use.
- m_font = new Font( s, size, style, fontUnit );
-
- m_textBrush = new SolidBrush(wxColourToColor(col));
+ Init(font.GetFaceName(), font.GetPointSize(), style, col, fontUnit);
}
wxGDIPlusFontData::~wxGDIPlusFontData()
m_bitmap = image;
}
+#if wxUSE_IMAGE
+
+wxImage wxGDIPlusBitmapData::ConvertToImage() const
+{
+ // We could use Bitmap::LockBits() and convert to wxImage directly but
+ // passing by wxBitmap is easier. It would be nice to measure performance
+ // of the two methods but for this the second one would need to be written
+ // first...
+ HBITMAP hbmp;
+ if ( m_bitmap->GetHBITMAP(Color(0xffffffff), &hbmp) != Gdiplus::Ok )
+ return wxNullImage;
+
+ wxBitmap bmp;
+ bmp.SetWidth(m_bitmap->GetWidth());
+ bmp.SetHeight(m_bitmap->GetHeight());
+ bmp.SetHBITMAP(hbmp);
+ bmp.SetDepth(IsAlphaPixelFormat(m_bitmap->GetPixelFormat()) ? 32 : 24);
+ return bmp.ConvertToImage();
+}
+
+#endif // wxUSE_IMAGE
+
wxGDIPlusBitmapData::~wxGDIPlusBitmapData()
{
delete m_bitmap;
delete m_helper;
}
+// ----------------------------------------------------------------------------
+// wxGraphicsBitmap implementation
+// ----------------------------------------------------------------------------
+
+#if wxUSE_IMAGE
+
+wxImage wxGraphicsBitmap::ConvertToImage() const
+{
+ const wxGDIPlusBitmapData* const
+ data = static_cast<wxGDIPlusBitmapData*>(GetGraphicsData());
+
+ return data ? data->ConvertToImage() : wxNullImage;
+}
+
+#endif // wxUSE_IMAGE
+
//-----------------------------------------------------------------------------
// wxGDIPlusPath implementation
//-----------------------------------------------------------------------------
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HDC hdc, wxDouble width, wxDouble height )
: wxGraphicsContext(renderer)
{
- Init();
- m_context = new Graphics( hdc);
- m_width = width;
- m_height = height;
- SetDefaults();
+ Init(new Graphics(hdc), width, height);
}
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, const wxDC& dc )
: wxGraphicsContext(renderer)
{
- Init();
-
wxMSWDCImpl *msw = wxDynamicCast( dc.GetImpl() , wxMSWDCImpl );
HDC hdc = (HDC) msw->GetHDC();
-
- m_context = new Graphics(hdc);
wxSize sz = dc.GetSize();
- m_width = sz.x;
- m_height = sz.y;
- SetDefaults();
+ Init(new Graphics(hdc), sz.x, sz.y);
}
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, HWND hwnd )
: wxGraphicsContext(renderer)
{
- Init();
- m_enableOffset = true;
- m_context = new Graphics( hwnd);
RECT rect = wxGetWindowRect(hwnd);
- m_width = rect.right - rect.left;
- m_height = rect.bottom - rect.top;
- SetDefaults();
+ Init(new Graphics(hwnd), rect.right - rect.left, rect.bottom - rect.top);
+ m_enableOffset = true;
}
wxGDIPlusContext::wxGDIPlusContext( wxGraphicsRenderer* renderer, Graphics* gr )
: wxGraphicsContext(renderer)
{
- Init();
- m_context = gr;
- SetDefaults();
+ Init(gr, 0, 0);
}
-wxGDIPlusContext::wxGDIPlusContext() : wxGraphicsContext(NULL)
+wxGDIPlusContext::wxGDIPlusContext(wxGraphicsRenderer* renderer)
+ : wxGraphicsContext(renderer)
{
- Init();
+ // Derived class must call Init() later but just set m_context to NULL for
+ // safety to avoid crashing in our dtor if Init() ends up not being called.
+ m_context = NULL;
}
-void wxGDIPlusContext::Init()
+void wxGDIPlusContext::Init(Graphics* graphics, int width, int height)
{
- m_context = NULL;
+ m_context = graphics;
m_state1 = 0;
- m_state2= 0;
- m_height = 0;
- m_width = 0;
+ m_state2 = 0;
+ m_width = width;
+ m_height = height;
m_fontScaleRatio = 1.0;
-}
-void wxGDIPlusContext::SetDefaults()
-{
m_context->SetTextRenderingHint(TextRenderingHintSystemDefault);
m_context->SetPixelOffsetMode(PixelOffsetModeHalf);
m_context->SetSmoothingMode(SmoothingModeHighQuality);
return context;
}
+#if wxUSE_IMAGE
+wxGraphicsContext * wxGDIPlusRenderer::CreateContextFromImage(wxImage& image)
+{
+ ENSURE_LOADED_OR_RETURN(NULL);
+ wxGDIPlusContext* context = new wxGDIPlusImageContext(this, image);
+ context->EnableOffset(true);
+ return context;
+}
+
+#endif // wxUSE_IMAGE
+
wxGraphicsContext * wxGDIPlusRenderer::CreateMeasuringContext()
{
ENSURE_LOADED_OR_RETURN(NULL);
return wxNullGraphicsBitmap;
}
+#if wxUSE_IMAGE
+
+wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmapFromImage(const wxImage& image)
+{
+ ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
+ if ( image.IsOk() )
+ {
+ // Notice that we rely on conversion from wxImage to wxBitmap here but
+ // we could probably do it more efficiently by converting from wxImage
+ // to GDI+ Bitmap directly, i.e. copying wxImage pixels to the buffer
+ // returned by Bitmap::LockBits(). However this would require writing
+ // code specific for this task while like this we can reuse existing
+ // code (see also wxGDIPlusBitmapData::ConvertToImage()).
+ wxGraphicsBitmap gb;
+ gb.SetRefData(new wxGDIPlusBitmapData(this, image));
+ return gb;
+ }
+ else
+ return wxNullGraphicsBitmap;
+}
+
+#endif // wxUSE_IMAGE
+
wxGraphicsBitmap wxGDIPlusRenderer::CreateBitmapFromNativeBitmap( void *bitmap )
{
ENSURE_LOADED_OR_RETURN(wxNullGraphicsBitmap);
projects / wxWidgets.git / blobdiff