added the possibility to rescale the image during loading, especially useful with...

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

diff --git a/src/common/graphcmn.cpp b/src/common/graphcmn.cpp
index 49a2a879676dfc4880d8419a89a1ef59feba48f6..f48a1be3dcd12538543fc0d79614a031fd43b124 100644 (file)
--- a/src/common/graphcmn.cpp
+++ b/src/common/graphcmn.cpp
@@ -3,7 +3,7 @@
 // Purpose:     graphics context methods common to all platforms
 // Author:      Stefan Csomor
 // Modified by:
 // Purpose:     graphics context methods common to all platforms
 // Author:      Stefan Csomor
 // Modified by:

-// Created:     
+// Created:

 // RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
 // Licence:     wxWindows licence
 // RCS-ID:      $Id$
 // Copyright:   (c) Stefan Csomor
 // Licence:     wxWindows licence


@@ -59,42 +59,42 @@ wxGraphicsObjectRefData::wxGraphicsObjectRefData( const wxGraphicsObjectRefData*
 {
     m_renderer = data->m_renderer;
 }
 {
     m_renderer = data->m_renderer;
 }

-wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const 
-{ 
-    return m_renderer ; 
+wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const
+{
+    return m_renderer ;

 }
 
 }
 

-wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const 
+wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const

 {
     return new wxGraphicsObjectRefData(this);
 }
 
 {
     return new wxGraphicsObjectRefData(this);
 }
 

-wxGraphicsObject::wxGraphicsObject() 
+wxGraphicsObject::wxGraphicsObject()

 {
 }
 
 {
 }
 

-wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer ) 
+wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer )

 {
     SetRefData( new wxGraphicsObjectRefData(renderer));
 }
 
 {
     SetRefData( new wxGraphicsObjectRefData(renderer));
 }
 

-wxGraphicsObject::~wxGraphicsObject() 
+wxGraphicsObject::~wxGraphicsObject()

 {
 }
 
 {
 }
 

-bool wxGraphicsObject::IsNull() const 
-{ 
-    return m_refData == NULL; 
+bool wxGraphicsObject::IsNull() const
+{
+    return m_refData == NULL;

 }
 
 }
 

-wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const 
-{ 
-    return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() ); 
+wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const
+{
+    return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() );

 }
 
 }
 

-wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const 
-{ 
-    return (wxGraphicsObjectRefData*) m_refData; 
+wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const
+{
+    return (wxGraphicsObjectRefData*) m_refData;

 }
 
 wxObjectRefData* wxGraphicsObject::CreateRefData() const
 }
 
 wxObjectRefData* wxGraphicsObject::CreateRefData() const


@@ -138,7 +138,7 @@ void wxGraphicsMatrix::Concat( const wxGraphicsMatrix *t )
 }
 
 // sets the matrix to the respective values
 }
 
 // sets the matrix to the respective values

-void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d, 
+void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,

                            wxDouble tx, wxDouble ty)
 {
     AllocExclusive();
                            wxDouble tx, wxDouble ty)
 {
     AllocExclusive();


@@ -190,7 +190,7 @@ void wxGraphicsMatrix::Rotate( wxDouble angle )
 {
     AllocExclusive();
     GetMatrixData()->Rotate(angle);
 {
     AllocExclusive();
     GetMatrixData()->Rotate(angle);

-}  
+}

 
 //
 // apply the transforms
 
 //
 // apply the transforms


@@ -252,9 +252,9 @@ void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble star
 
 wxRect2DDouble wxGraphicsPath::GetBox() const
 {
 
 wxRect2DDouble wxGraphicsPath::GetBox() const
 {

-       wxDouble x,y,w,h;
-       GetBox(&x,&y,&w,&h);
-       return wxRect2DDouble( x,y,w,h );
+    wxDouble x,y,w,h;
+    GetBox(&x,&y,&w,&h);
+    return wxRect2DDouble( x,y,w,h );

 }
 
 bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, int fillStyle ) const
 }
 
 bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, int fillStyle ) const


@@ -271,7 +271,7 @@ void wxGraphicsPath::MoveToPoint( wxDouble x, wxDouble y )
     GetPathData()->MoveToPoint(x,y);
 }
 
     GetPathData()->MoveToPoint(x,y);
 }
 

-// adds a straight line from the current point to (x,y) 
+// adds a straight line from the current point to (x,y)

 void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y )
 {
     AllocExclusive();
 void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y )
 {
     AllocExclusive();


@@ -313,7 +313,7 @@ void wxGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startA
 }
 
 //
 }
 
 //

-// These are convenience functions which - if not available natively will be assembled 
+// These are convenience functions which - if not available natively will be assembled

 // using the primitives from above
 //
 
 // using the primitives from above
 //
 


@@ -324,7 +324,7 @@ void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x,
     GetPathData()->AddQuadCurveToPoint(cx,cy,x,y);
 }
 
     GetPathData()->AddQuadCurveToPoint(cx,cy,x,y);
 }
 

-// appends a rectangle as a new closed subpath 
+// appends a rectangle as a new closed subpath

 void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {
     AllocExclusive();
 void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
 {
     AllocExclusive();


@@ -339,7 +339,7 @@ void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r )
 }
 
 // appends a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 }
 
 // appends a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)

-void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) 
+void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )

 {
     GetPathData()->AddArcToPoint(x1,y1,x2,y2,r);
 }
 {
     GetPathData()->AddArcToPoint(x1,y1,x2,y2,r);
 }


@@ -425,6 +425,9 @@ void wxGraphicsPathData::AddCircle( wxDouble x, wxDouble y, wxDouble r )
 
 void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 {
 
 void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 {

+    if (w <= 0. || h <= 0.)
+      return;
+

     wxDouble rw = w/2;
     wxDouble rh = h/2;
     wxDouble xc = x + rw;
     wxDouble rw = w/2;
     wxDouble rh = h/2;
     wxDouble xc = x + rw;


@@ -455,7 +458,7 @@ void wxGraphicsPathData::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w
 
 // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
 
 // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
 void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )

-{   
+{

     wxPoint2DDouble current;
     GetCurrentPoint(&current.m_x,&current.m_y);
     wxPoint2DDouble p1(x1,y1);
     wxPoint2DDouble current;
     GetCurrentPoint(&current.m_x,&current.m_y);
     wxPoint2DDouble p1(x1,y1);


@@ -498,20 +501,20 @@ void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2,
 IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject)
 
 
 IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject)
 
 

-wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer) 
+wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : wxGraphicsObject(renderer)

 {
     m_logicalFunction = wxCOPY;
 }
 
 {
     m_logicalFunction = wxCOPY;
 }
 

-wxGraphicsContext::~wxGraphicsContext() 
+wxGraphicsContext::~wxGraphicsContext()

 {
 }
 
 {
 }
 

-bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message)) 
+bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message))

 {
     return true;
 }
 {
     return true;
 }

-    
+

 void wxGraphicsContext::EndDoc()
 {
 }
 void wxGraphicsContext::EndDoc()
 {
 }


@@ -520,7 +523,7 @@ void wxGraphicsContext::StartPage(wxDouble WXUNUSED(width),
                                   wxDouble WXUNUSED(height))
 {
 }
                                   wxDouble WXUNUSED(height))
 {
 }

-    
+

 void wxGraphicsContext::EndPage()
 {
 }
 void wxGraphicsContext::EndPage()
 {
 }


@@ -533,7 +536,7 @@ void wxGraphicsContext::Flush()
 void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) )
 {
 }
 void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) )
 {
 }

-    
+

 wxDouble wxGraphicsContext::GetAlpha() const
 {
     return 1.0;
 wxDouble wxGraphicsContext::GetAlpha() const
 {
     return 1.0;


@@ -553,7 +556,7 @@ void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY)
 }
 
 // sets the pen
 }
 
 // sets the pen

-void wxGraphicsContext::SetPen( const wxGraphicsPen& pen ) 
+void wxGraphicsContext::SetPen( const wxGraphicsPen& pen )

 {
     m_pen = pen;
 }
 {
     m_pen = pen;
 }


@@ -565,9 +568,9 @@ void wxGraphicsContext::SetPen( const wxPen& pen )
     else
         SetPen( CreatePen( pen ) );
 }
     else
         SetPen( CreatePen( pen ) );
 }

-    
+

 // sets the brush for filling
 // sets the brush for filling

-void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush ) 
+void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush )

 {
     m_brush = brush;
 }
 {
     m_brush = brush;
 }


@@ -581,7 +584,7 @@ void wxGraphicsContext::SetBrush( const wxBrush& brush )
 }
 
 // sets the brush for filling
 }
 
 // sets the brush for filling

-void wxGraphicsContext::SetFont( const wxGraphicsFont& font ) 
+void wxGraphicsContext::SetFont( const wxGraphicsFont& font )

 {
     m_font = font;
 }
 {
     m_font = font;
 }


@@ -610,7 +613,11 @@ void wxGraphicsContext::DrawPath( const wxGraphicsPath& path, int fillStyle )
     StrokePath( path );
 }
 
     StrokePath( path );
 }
 

-void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
+void
+wxGraphicsContext::DoDrawRotatedText(const wxString &str,
+                                     wxDouble x,
+                                     wxDouble y,
+                                     wxDouble angle)

 {
     Translate(x,y);
     Rotate( -angle );
 {
     Translate(x,y);
     Rotate( -angle );


@@ -619,18 +626,22 @@ void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, w
     Translate(-x,-y);
 }
 
     Translate(-x,-y);
 }
 

-void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, const wxGraphicsBrush& backgroundBrush ) 
+void
+wxGraphicsContext::DoDrawFilledText(const wxString &str,
+                                    wxDouble x,
+                                    wxDouble y,
+                                    const wxGraphicsBrush& backgroundBrush)

 {
     wxGraphicsBrush formerBrush = m_brush;
 {
     wxGraphicsBrush formerBrush = m_brush;

-       wxGraphicsPen formerPen = m_pen;
+    wxGraphicsPen formerPen = m_pen;

     wxDouble width;
     wxDouble height;
     wxDouble descent;
     wxDouble externalLeading;
     GetTextExtent( str , &width, &height, &descent, &externalLeading );
     SetBrush( backgroundBrush );
     wxDouble width;
     wxDouble height;
     wxDouble descent;
     wxDouble externalLeading;
     GetTextExtent( str , &width, &height, &descent, &externalLeading );
     SetBrush( backgroundBrush );

-       // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape
-       SetPen( wxNullGraphicsPen );
+    // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape
+    SetPen( wxNullGraphicsPen );

 
     wxGraphicsPath path = CreatePath();
     path.AddRectangle( x , y, width, height );
 
     wxGraphicsPath path = CreatePath();
     path.AddRectangle( x , y, width, height );


@@ -638,13 +649,17 @@ void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, c
 
     DrawText( str, x ,y);
     SetBrush( formerBrush );
 
     DrawText( str, x ,y);
     SetBrush( formerBrush );

-       SetPen( formerPen );
+    SetPen( formerPen );

 }
 
 }
 

-void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle, const wxGraphicsBrush& backgroundBrush )
+void
+wxGraphicsContext::DoDrawRotatedFilledText(const wxString &str,
+                                           wxDouble x, wxDouble y,
+                                           wxDouble angle,
+                                           const wxGraphicsBrush& backgroundBrush)

 {
     wxGraphicsBrush formerBrush = m_brush;
 {
     wxGraphicsBrush formerBrush = m_brush;

-       wxGraphicsPen formerPen = m_pen;
+    wxGraphicsPen formerPen = m_pen;

 
     wxDouble width;
     wxDouble height;
 
     wxDouble width;
     wxDouble height;


@@ -652,8 +667,8 @@ void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, w
     wxDouble externalLeading;
     GetTextExtent( str , &width, &height, &descent, &externalLeading );
     SetBrush( backgroundBrush );
     wxDouble externalLeading;
     GetTextExtent( str , &width, &height, &descent, &externalLeading );
     SetBrush( backgroundBrush );

-       // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape
-       SetPen( wxNullGraphicsPen );
+    // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape
+    SetPen( wxNullGraphicsPen );

 
     wxGraphicsPath path = CreatePath();
     path.MoveToPoint( x , y );
 
     wxGraphicsPath path = CreatePath();
     path.MoveToPoint( x , y );


@@ -665,7 +680,7 @@ void wxGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, w
     FillPath( path );
     DrawText( str, x ,y, angle);
     SetBrush( formerBrush );
     FillPath( path );
     DrawText( str, x ,y, angle);
     SetBrush( formerBrush );

-       SetPen( formerPen );
+    SetPen( formerPen );

 }
 
 void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2)
 }
 
 void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2)


@@ -730,7 +745,7 @@ void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoint
 }
 
 // create a 'native' matrix corresponding to these values
 }
 
 // create a 'native' matrix corresponding to these values

-wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d, 
+wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,

     wxDouble tx, wxDouble ty) const
 {
     return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty);
     wxDouble tx, wxDouble ty) const
 {
     return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty);


@@ -752,13 +767,13 @@ wxGraphicsBrush wxGraphicsContext::CreateBrush(const wxBrush& brush ) const
 }
 
 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2
 }
 
 // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2

-wxGraphicsBrush wxGraphicsContext::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, 
+wxGraphicsBrush wxGraphicsContext::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2,

                                                    const wxColour&c1, const wxColour&c2) const
 {
     return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2,c1,c2);
 }
 
                                                    const wxColour&c1, const wxColour&c2) const
 {
     return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2,c1,c2);
 }
 

-// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) 
+// sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc)

 // with radius r and color cColor
 wxGraphicsBrush wxGraphicsContext::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
                                                    const wxColour &oColor, const wxColour &cColor) const
 // with radius r and color cColor
 wxGraphicsBrush wxGraphicsContext::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
                                                    const wxColour &oColor, const wxColour &cColor) const


@@ -790,18 +805,18 @@ wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp
 #endif
 }
 
 #endif
 }
 

-/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc) 
+/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc)

 {
     return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc);
 }
 
 {
     return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc);
 }
 

-/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc) 
+/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc)

 {
     return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc);
 }
 
 #if wxUSE_PRINTING_ARCHITECTURE
 {
     return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc);
 }
 
 #if wxUSE_PRINTING_ARCHITECTURE

-/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc) 
+/* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc)

 {
     return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc);
 }
 {
     return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc);
 }