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new graphics context implementation

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42162 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2006-10-20 11:56:32 +00:00
parent f7862d3e49
commit 1056ddcf24
1 changed files with 100 additions and 27 deletions
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127
src/mac/carbon/graphics.cpp
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@@ -170,14 +170,15 @@ class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
public:
wxMacCoreGraphicsContext( CGrafPtr port );
wxMacCoreGraphicsContext( CGContextRef cgcontext );
wxMacCoreGraphicsContext( WindowRef window );
wxMacCoreGraphicsContext();
~wxMacCoreGraphicsContext();
void Init();
// creates a path instance that corresponds to the type of graphics context, ie GDIPlus, cairo, CoreGraphics ...
virtual wxGraphicsPath * CreatePath();
@@ -191,6 +192,14 @@ public:
// clips drawings to the region
virtual void Clip( const wxRegion &region );
// clips drawings to the rect
virtual void Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h );
// resets the clipping to original extent
virtual void ResetClip();
virtual void * GetNativeContext();
//
// transformation
//
@@ -259,17 +268,18 @@ public:
virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
CGContextRef GetNativeContext();
void SetNativeContext( CGContextRef cg );
CGPathDrawingMode GetDrawingMode() const { return m_mode; }
private:
CGContextRef m_cgContext;
CGrafPtr m_qdPort;
WindowRef m_windowRef;
bool m_releaseContext;
CGPathDrawingMode m_mode;
ATSUStyle m_macATSUIStyle;
wxPen m_pen;
wxBrush m_brush;
wxFont m_font;
wxColor m_textForegroundColor;
};
@@ -305,30 +315,40 @@ static const double RAD2DEG = 180.0 / M_PI;
// wxGraphicsContext implementation
//-----------------------------------------------------------------------------
wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( CGrafPtr port )
void wxMacCoreGraphicsContext::Init()
{
m_qdPort = port;
m_cgContext = NULL;
m_mode = kCGPathFill;
m_macATSUIStyle = NULL;
m_releaseContext = false;
}
wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( CGContextRef cgcontext )
{
m_qdPort = NULL;
m_cgContext = cgcontext;
m_mode = kCGPathFill;
m_macATSUIStyle = NULL;
Init();
m_cgContext = cgcontext;
CGContextSaveGState( m_cgContext );
CGContextSaveGState( m_cgContext );
}
wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( WindowRef window )
{
Init();
m_windowRef = window;
OSStatus status = QDBeginCGContext( GetWindowPort( window ) , &m_cgContext );
wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
Rect bounds;
GetWindowBounds( window, kWindowContentRgn, &bounds );
CGContextSaveGState( m_cgContext );
CGContextTranslateCTM( m_cgContext , 0 , bounds.bottom - bounds.top );
CGContextScaleCTM( m_cgContext , 1 , -1 );
CGContextSaveGState( m_cgContext );
m_releaseContext = true;
}
wxMacCoreGraphicsContext::wxMacCoreGraphicsContext()
{
m_qdPort = NULL;
m_cgContext = NULL;
m_mode = kCGPathFill;
m_macATSUIStyle = NULL;
Init();
}
wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
@@ -340,20 +360,51 @@ wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
CGContextRestoreGState( m_cgContext );
}
if ( m_qdPort )
CGContextRelease( m_cgContext );
if ( m_releaseContext )
QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
}
void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
{
// ClipCGContextToRegion ( m_cgContext, &bounds , (RgnHandle) dc->m_macCurrentClipRgn );
HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
HIShapeReplacePathInCGContext( shape, m_cgContext );
CGContextClip( m_cgContext );
CFRelease( shape );
}
// clips drawings to the rect
void wxMacCoreGraphicsContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
HIRect r = CGRectMake( x , y , w , h );
CGContextClipToRect( m_cgContext, r );
}
// resets the clipping to original extent
void wxMacCoreGraphicsContext::ResetClip()
{
CGContextRestoreGState( m_cgContext );
CGContextSaveGState( m_cgContext );
}
void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath *p )
{
const wxMacCoreGraphicsPath* path = dynamic_cast< const wxMacCoreGraphicsPath*>( p );
int width = m_pen.GetWidth();
if ( width == 0 )
width = 1 ;
if ( m_pen.GetStyle() == wxTRANSPARENT )
width = 0 ;
bool offset = ( width % 2 ) == 1 ;
if ( offset )
CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
CGContextAddPath( m_cgContext , path->GetPath() );
CGContextStrokePath( m_cgContext );
if ( offset )
CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
}
void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath *p , int fillStyle )
@@ -369,8 +420,22 @@ void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath *p , int fillStyle
mode = kCGPathEOFillStroke;
}
int width = m_pen.GetWidth();
if ( width == 0 )
width = 1 ;
if ( m_pen.GetStyle() == wxTRANSPARENT )
width = 0 ;
bool offset = ( width % 2 ) == 1 ;
if ( offset )
CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
CGContextAddPath( m_cgContext , path->GetPath() );
CGContextDrawPath( m_cgContext , mode );
if ( offset )
CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
}
void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath *p , int fillStyle )
@@ -386,19 +451,9 @@ void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath *p , int fillStyle
wxGraphicsPath* wxMacCoreGraphicsContext::CreatePath()
{
// make sure that we now have a real cgref, before doing
// anything with paths
CGContextRef cg = GetNativeContext();
cg = NULL;
return new wxMacCoreGraphicsPath();
}
CGContextRef wxMacCoreGraphicsContext::GetNativeContext()
{
return m_cgContext;
}
void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
{
// we allow either setting or clearing but not replacing
@@ -456,6 +511,8 @@ void wxMacCoreGraphicsContext::PopState()
void wxMacCoreGraphicsContext::SetTextColor( const wxColour &col )
{
m_textForegroundColor = col;
// to recreate the native font after color change
SetFont( m_font );
}
#pragma mark -
@@ -1171,6 +1228,7 @@ void wxMacCoreGraphicsContext::SetFont( const wxFont &font )
if ( font.Ok() )
{
m_font = font ;
OSStatus status;
status = ATSUCreateAndCopyStyle( (ATSUStyle) font.MacGetATSUStyle() , (ATSUStyle*) &m_macATSUIStyle );
@@ -1205,9 +1263,24 @@ void wxMacCoreGraphicsContext::SetFont( const wxFont &font )
}
}
void * wxMacCoreGraphicsContext::GetNativeContext()
{
return m_cgContext;
}
wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC &dc )
{
return new wxMacCoreGraphicsContext((CGContextRef)dc.GetWindow()->MacGetCGContextRef() );
}
wxGraphicsContext* wxGraphicsContext::Create( wxWindow * window )
{
return new wxMacCoreGraphicsContext( (WindowRef) window->MacGetTopLevelWindowRef() );
}
wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context )
{
return new wxMacCoreGraphicsContext((CGContextRef)context);
}
#endif // wxMAC_USE_CORE_GRAPHICS