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on demand creation of native CGContexts , so that pure text measuring contexts don't need a native counterpart

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42248 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2006-10-22 20:38:53 +00:00
parent 06077aaf2c
commit eec960fa89
1 changed files with 129 additions and 63 deletions
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192
src/mac/carbon/graphics.cpp
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@@ -38,13 +38,24 @@
typedef float CGFloat;
#endif
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
#if !defined( __DARWIN__ ) || defined(__MWERKS__)
#ifndef M_PI
const double M_PI = 3.14159265358979;
#endif
#endif
static const double RAD2DEG = 180.0 / M_PI;
//
// Graphics Path
//
class WXDLLEXPORT wxMacCoreGraphicsPath : public wxGraphicsPath
{
DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsPath)
public :
wxMacCoreGraphicsPath();
~wxMacCoreGraphicsPath();
@@ -84,11 +95,24 @@ public :
// 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)
virtual void AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r );
CGPathRef GetPath() const;
// returns the native path
virtual void * GetNativePath() const { return m_path; }
// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
virtual void UnGetNativePath(void *p) {}
DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsPath)
DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsPath)
private :
CGMutablePathRef m_path;
};
//-----------------------------------------------------------------------------
// wxGraphicsPath implementation
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsPath, wxGraphicsPath)
wxMacCoreGraphicsPath::wxMacCoreGraphicsPath()
{
m_path = CGPathCreateMutable();
@@ -149,11 +173,6 @@ void wxMacCoreGraphicsPath::CloseSubpath()
CGPathCloseSubpath( m_path );
}
CGPathRef wxMacCoreGraphicsPath::GetPath() const
{
return m_path;
}
// gets the last point of the current path, (0,0) if not yet set
void wxMacCoreGraphicsPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
{
@@ -168,13 +187,13 @@ void wxMacCoreGraphicsPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
class WXDLLEXPORT wxMacCoreGraphicsContext : public wxGraphicsContext
{
DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
public:
wxMacCoreGraphicsContext( CGContextRef cgcontext );
wxMacCoreGraphicsContext( WindowRef window );
wxMacCoreGraphicsContext( wxWindow* window );
wxMacCoreGraphicsContext();
~wxMacCoreGraphicsContext();
@@ -272,9 +291,17 @@ public:
void SetNativeContext( CGContextRef cg );
CGPathDrawingMode GetDrawingMode() const { return m_mode; }
DECLARE_NO_COPY_CLASS(wxMacCoreGraphicsContext)
DECLARE_DYNAMIC_CLASS(wxMacCoreGraphicsContext)
private:
void EnsureIsValid();
CGContextRef m_cgContext;
WindowRef m_windowRef;
int m_originX;
int m_originY;
wxMacCFRefHolder<HIShapeRef> m_clipRgn;
bool m_releaseContext;
CGPathDrawingMode m_mode;
ATSUStyle m_macATSUIStyle;
@@ -284,18 +311,6 @@ private:
wxColor m_textForegroundColor;
};
//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------
#if !defined( __DARWIN__ ) || defined(__MWERKS__)
#ifndef M_PI
const double M_PI = 3.14159265358979;
#endif
#endif
static const double RAD2DEG = 180.0 / M_PI;
//-----------------------------------------------------------------------------
// device context implementation
//
@@ -308,20 +323,19 @@ static const double RAD2DEG = 180.0 / M_PI;
// state we were called with, the other one after changing to HI Graphics orientation
// (this one is used for getting back clippings etc)
//-----------------------------------------------------------------------------
// wxGraphicsPath implementation
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// wxGraphicsContext implementation
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxMacCoreGraphicsContext, wxGraphicsContext)
void wxMacCoreGraphicsContext::Init()
{
m_cgContext = NULL;
m_mode = kCGPathFill;
m_macATSUIStyle = NULL;
m_releaseContext = false;
m_clipRgn.Set(HIShapeCreateEmpty());
}
wxMacCoreGraphicsContext::wxMacCoreGraphicsContext( CGContextRef cgcontext )
@@ -336,15 +350,14 @@ 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( wxWindow* window )
{
Init();
m_windowRef = (WindowRef) window->MacGetTopLevelWindowRef();
m_originX = m_originY = 0;
window->MacWindowToRootWindow( &m_originX , &m_originY );
}
wxMacCoreGraphicsContext::wxMacCoreGraphicsContext()
@@ -356,7 +369,7 @@ wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
{
if ( m_cgContext )
{
CGContextSynchronize( m_cgContext );
// TODO : when is this necessary - should we add a Flush() method ? CGContextSynchronize( m_cgContext );
CGContextRestoreGState( m_cgContext );
CGContextRestoreGState( m_cgContext );
}
@@ -365,31 +378,76 @@ wxMacCoreGraphicsContext::~wxMacCoreGraphicsContext()
QDEndCGContext( GetWindowPort( m_windowRef ) , &m_cgContext);
}
void wxMacCoreGraphicsContext::EnsureIsValid()
{
if ( !m_cgContext )
{
OSStatus status = QDBeginCGContext( GetWindowPort( m_windowRef ) , &m_cgContext );
wxASSERT_MSG( status == noErr , wxT("Cannot nest wxDCs on the same window") );
Rect bounds;
GetWindowBounds( m_windowRef, kWindowContentRgn, &bounds );
CGContextSaveGState( m_cgContext );
CGContextTranslateCTM( m_cgContext , 0 , bounds.bottom - bounds.top );
CGContextScaleCTM( m_cgContext , 1 , -1 );
CGContextTranslateCTM( m_cgContext, m_originX, m_originY );
CGContextSaveGState( m_cgContext );
m_releaseContext = true;
if ( !HIShapeIsEmpty(m_clipRgn) )
{
HIShapeReplacePathInCGContext( m_clipRgn, m_cgContext );
CGContextClip( m_cgContext );
}
}
}
void wxMacCoreGraphicsContext::Clip( const wxRegion &region )
{
HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
HIShapeReplacePathInCGContext( shape, m_cgContext );
CGContextClip( m_cgContext );
CFRelease( shape );
if( m_cgContext )
{
HIShapeRef shape = HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() );
HIShapeReplacePathInCGContext( shape, m_cgContext );
CGContextClip( m_cgContext );
CFRelease( shape );
}
else
{
m_clipRgn.Set(HIShapeCreateWithQDRgn( (RgnHandle) region.GetWXHRGN() ));
}
}
// 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 );
HIRect r = CGRectMake( x , y , w , h );
if ( m_cgContext )
{
CGContextClipToRect( m_cgContext, r );
}
else
{
m_clipRgn.Set(HIShapeCreateWithRect(&r));
}
}
// resets the clipping to original extent
void wxMacCoreGraphicsContext::ResetClip()
{
CGContextRestoreGState( m_cgContext );
CGContextSaveGState( m_cgContext );
if ( m_cgContext )
{
CGContextRestoreGState( m_cgContext );
CGContextSaveGState( m_cgContext );
}
else
{
m_clipRgn.Set(HIShapeCreateEmpty());
}
}
void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath *p )
void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath *path )
{
const wxMacCoreGraphicsPath* path = dynamic_cast< const wxMacCoreGraphicsPath*>( p );
EnsureIsValid();
int width = m_pen.GetWidth();
if ( width == 0 )
width = 1 ;
@@ -401,16 +459,17 @@ void wxMacCoreGraphicsContext::StrokePath( const wxGraphicsPath *p )
if ( offset )
CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
CGContextAddPath( m_cgContext , path->GetPath() );
CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
CGContextStrokePath( m_cgContext );
if ( offset )
CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
}
void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath *p , int fillStyle )
void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath *path , int fillStyle )
{
const wxMacCoreGraphicsPath* path = dynamic_cast< const wxMacCoreGraphicsPath*>( p );
EnsureIsValid();
CGPathDrawingMode mode = m_mode;
if ( fillStyle == wxODDEVEN_RULE )
@@ -432,18 +491,18 @@ void wxMacCoreGraphicsContext::DrawPath( const wxGraphicsPath *p , int fillStyle
if ( offset )
CGContextTranslateCTM( m_cgContext, 0.5, 0.5 );
CGContextAddPath( m_cgContext , path->GetPath() );
CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
CGContextDrawPath( m_cgContext , mode );
if ( offset )
CGContextTranslateCTM( m_cgContext, -0.5, -0.5 );
}
void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath *p , int fillStyle )
void wxMacCoreGraphicsContext::FillPath( const wxGraphicsPath *path , int fillStyle )
{
const wxMacCoreGraphicsPath* path = dynamic_cast< const wxMacCoreGraphicsPath*>( p );
CGContextAddPath( m_cgContext , path->GetPath() );
EnsureIsValid();
CGContextAddPath( m_cgContext , (CGPathRef) path->GetNativePath() );
if ( fillStyle == wxODDEVEN_RULE )
CGContextEOFillPath( m_cgContext );
else
@@ -467,21 +526,29 @@ void wxMacCoreGraphicsContext::SetNativeContext( CGContextRef cg )
void wxMacCoreGraphicsContext::Translate( wxDouble dx , wxDouble dy )
{
EnsureIsValid();
CGContextTranslateCTM( m_cgContext, dx, dy );
}
void wxMacCoreGraphicsContext::Scale( wxDouble xScale , wxDouble yScale )
{
EnsureIsValid();
CGContextScaleCTM( m_cgContext , xScale , yScale );
}
void wxMacCoreGraphicsContext::Rotate( wxDouble angle )
{
EnsureIsValid();
CGContextRotateCTM( m_cgContext , angle );
}
void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
EnsureIsValid();
CGImageRef image = (CGImageRef)( bmp.CGImageCreate() );
HIRect r = CGRectMake( x , y , w , h );
HIViewDrawCGImage( m_cgContext , &r , image );
@@ -490,6 +557,8 @@ void wxMacCoreGraphicsContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDo
void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
EnsureIsValid();
CGRect r = CGRectMake( 00 , 00 , w , h );
CGContextSaveGState( m_cgContext );
CGContextTranslateCTM( m_cgContext, x , y + h );
@@ -501,11 +570,15 @@ void wxMacCoreGraphicsContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDoubl
void wxMacCoreGraphicsContext::PushState()
{
EnsureIsValid();
CGContextSaveGState( m_cgContext );
}
void wxMacCoreGraphicsContext::PopState()
{
EnsureIsValid();
CGContextRestoreGState( m_cgContext );
}
@@ -979,6 +1052,8 @@ void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDoub
void wxMacCoreGraphicsContext::DrawText( const wxString &str, wxDouble x, wxDouble y, wxDouble angle )
{
EnsureIsValid();
OSStatus status = noErr;
ATSUTextLayout atsuLayout;
UniCharCount chars = str.length();
@@ -1276,16 +1351,7 @@ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC &dc )
wxGraphicsContext* wxGraphicsContext::Create( wxWindow * window )
{
wxGraphicsContext* ctx = new wxMacCoreGraphicsContext( (WindowRef) window->MacGetTopLevelWindowRef() );
CGContextRef cg = (CGContextRef) ctx->GetNativeContext() ;
CGContextRestoreGState( cg );
int x , y;
x = y = 0;
window->MacWindowToRootWindow( &x , &y );
CGContextTranslateCTM( cg, x, y );
CGContextSaveGState( cg );
return ctx;
return new wxMacCoreGraphicsContext( window );
}
wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context )