--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// Name: src/generic/graphicc.cpp
+// Purpose: cairo device context class
+// Author: Stefan Csomor
+// Modified by:
+// Created: 01/02/97
+// RCS-ID: $Id$
+// Copyright: (c) Stefan Csomor
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#include "wx/wxprec.h"
+
+#include "wx/dc.h"
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+#pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+#include "wx/image.h"
+#include "wx/window.h"
+#include "wx/dc.h"
+#include "wx/utils.h"
+#include "wx/dialog.h"
+#include "wx/app.h"
+#include "wx/bitmap.h"
+#include "wx/dcmemory.h"
+#include "wx/log.h"
+#include "wx/icon.h"
+#include "wx/dcprint.h"
+#include "wx/module.h"
+#endif
+
+#include "wx/graphics.h"
+
+#include <vector>
+
+using namespace std;
+
+//-----------------------------------------------------------------------------
+// constants
+//-----------------------------------------------------------------------------
+
+const double RAD2DEG = 180.0 / M_PI;
+
+//-----------------------------------------------------------------------------
+// Local functions
+//-----------------------------------------------------------------------------
+
+static inline double dmin(double a, double b)
+{
+ return a < b ? a : b;
+}
+static inline double dmax(double a, double b)
+{
+ return a > b ? a : b;
+}
+
+static inline double DegToRad(double deg)
+{
+ return (deg * M_PI) / 180.0;
+}
+static inline double RadToDeg(double deg)
+{
+ return (deg * 180.0) / M_PI;
+}
+
+//-----------------------------------------------------------------------------
+// device context implementation
+//
+// more and more of the dc functionality should be implemented by calling
+// the appropricate wxCairoContext, but we will have to do that step by step
+// also coordinate conversions should be moved to native matrix ops
+//-----------------------------------------------------------------------------
+
+// we always stock two context states, one at entry, to be able to preserve the
+// 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
+//-----------------------------------------------------------------------------
+
+// TODO remove this dependency (gdiplus needs the macros)
+
+#ifndef max
+#define max(a,b) (((a) > (b)) ? (a) : (b))
+#endif
+
+#ifndef min
+#define min(a,b) (((a) < (b)) ? (a) : (b))
+#endif
+
+#include <cairo.h>
+#include <gtk/gtk.h>
+
+class WXDLLEXPORT wxCairoPath : public wxGraphicsPath
+{
+ DECLARE_NO_COPY_CLASS(wxCairoPath)
+public :
+ wxCairoPath();
+ ~wxCairoPath();
+
+
+ //
+ // These are the path primitives from which everything else can be constructed
+ //
+
+ // begins a new subpath at (x,y)
+ virtual void MoveToPoint( wxDouble x, wxDouble y );
+
+ // adds a straight line from the current point to (x,y)
+ virtual void AddLineToPoint( wxDouble x, wxDouble y );
+
+ // adds a cubic Bezier curve from the current point, using two control points and an end point
+ virtual void AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y );
+
+
+ // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle
+ virtual void AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) ;
+
+ // gets the last point of the current path, (0,0) if not yet set
+ virtual void GetCurrentPoint( wxDouble& x, wxDouble&y) ;
+
+ // closes the current sub-path
+ virtual void CloseSubpath();
+
+ //
+ // These are convenience functions which - if not available natively will be assembled
+ // using the primitives from above
+ //
+
+ /*
+
+ // appends a rectangle as a new closed subpath
+ virtual void AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) ;
+ // appends an ellipsis as a new closed subpath fitting the passed rectangle
+ virtual void AddEllipsis( wxDouble x, wxDouble y, wxDouble w , wxDouble h ) ;
+
+ // 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 ) ;
+ */
+
+ cairo_path_t* GetPath() const;
+private :
+ cairo_t* m_pathContext;
+};
+
+wxCairoPath::wxCairoPath()
+{
+ cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
+ m_pathContext = cairo_create(surface);
+ cairo_surface_destroy (surface);
+}
+
+wxCairoPath::~wxCairoPath()
+{
+ cairo_destroy(m_pathContext);
+}
+
+cairo_path_t* wxCairoPath::GetPath() const
+{
+ return cairo_copy_path(m_pathContext) ;
+}
+
+//
+// The Primitives
+//
+
+void wxCairoPath::MoveToPoint( wxDouble x , wxDouble y )
+{
+ cairo_move_to(m_pathContext,x,y);
+}
+
+void wxCairoPath::AddLineToPoint( wxDouble x , wxDouble y )
+{
+ cairo_line_to(m_pathContext,x,y);
+}
+
+void wxCairoPath::CloseSubpath()
+{
+ cairo_close_path(m_pathContext);
+}
+
+void wxCairoPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y )
+{
+ cairo_curve_to(m_pathContext,cx1,cy1,cx2,cy2,x,y);
+}
+
+// gets the last point of the current path, (0,0) if not yet set
+void wxCairoPath::GetCurrentPoint( wxDouble& x, wxDouble&y)
+{
+ double dx,dy;
+ cairo_get_current_point(m_pathContext,&dx,&dy);
+ x = dx;
+ y = dy;
+}
+
+void wxCairoPath::AddArc( wxDouble x, wxDouble y, wxDouble r, double startAngle, double endAngle, bool clockwise )
+{
+ // as clockwise means positive in our system (y pointing downwards)
+ // TODO make this interpretation dependent of the
+ // real device trans
+ if ( clockwise||(endAngle-startAngle)>=2*M_PI)
+ cairo_arc(m_pathContext,x,y,r,startAngle,endAngle);
+ else
+ cairo_arc_negative(m_pathContext,x,y,r,startAngle,endAngle);
+}
+
+/*
+void wxCairoPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+ m_path->AddRectangle(RectF(x,y,w,h));
+}
+*/
+//
+//
+//
+/*
+// closes the current subpath
+void wxCairoPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r )
+{
+// CGPathAddArcToPoint( m_path, NULL , x1, y1, x2, y2, r);
+}
+
+*/
+
+class WXDLLEXPORT wxCairoContext : public wxGraphicsContext
+{
+ DECLARE_NO_COPY_CLASS(wxCairoContext)
+
+public:
+ wxCairoContext( const wxWindowDC& dc );
+ wxCairoContext();
+ virtual ~wxCairoContext();
+
+ virtual void Clip( const wxRegion ®ion );
+ virtual void StrokePath( const wxGraphicsPath *p );
+ virtual void FillPath( const wxGraphicsPath *p , int fillStyle = wxWINDING_RULE );
+
+ virtual wxGraphicsPath* CreatePath();
+ virtual void SetPen( const wxPen &pen );
+ virtual void SetBrush( const wxBrush &brush );
+ virtual void SetLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2) ;
+ virtual void SetRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
+ const wxColour &oColor, const wxColour &cColor);
+
+ virtual void Translate( wxDouble dx , wxDouble dy );
+ virtual void Scale( wxDouble xScale , wxDouble yScale );
+ virtual void Rotate( wxDouble angle );
+
+ virtual void DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
+ virtual void DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
+ virtual void PushState();
+ virtual void PopState();
+
+ virtual void SetFont( const wxFont &font );
+ virtual void SetTextColor( const wxColour &col );
+ virtual void DrawText( const wxString &str, wxDouble x, wxDouble y);
+ virtual void GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
+ wxDouble *descent, wxDouble *externalLeading ) const;
+ virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
+
+private:
+ cairo_t* m_context;
+ bool m_penTransparent;
+ bool m_brushTransparent;
+
+ wxPen m_pen;
+ wxBrush m_brush;
+ cairo_pattern_t* m_brushPattern;
+ wxColour m_textColour;
+};
+
+
+
+
+//-----------------------------------------------------------------------------
+// wxCairoContext implementation
+//-----------------------------------------------------------------------------
+
+wxCairoContext::wxCairoContext( const wxWindowDC& dc )
+{
+ m_context = gdk_cairo_create( dc.m_window ) ;
+ PushState();
+ PushState();
+ m_penTransparent = true;
+ m_brushTransparent = true;
+ m_brushPattern = NULL ;
+}
+
+wxCairoContext::~wxCairoContext()
+{
+ if ( m_context )
+ {
+ PopState();
+ PopState();
+ cairo_destroy(m_context);
+ if ( m_brushPattern )
+ cairo_pattern_destroy(m_brushPattern);
+ }
+}
+
+
+void wxCairoContext::Clip( const wxRegion ®ion )
+{
+ // ClipCGContextToRegion ( m_context, &bounds , (RgnHandle) dc->m_macCurrentClipRgn );
+}
+
+void wxCairoContext::StrokePath( const wxGraphicsPath *p )
+{
+ if ( m_penTransparent )
+ return;
+
+ const wxCairoPath* path = dynamic_cast< const wxCairoPath*>( p );
+ cairo_path_t* cp = path->GetPath() ;
+ cairo_append_path(m_context,cp);
+
+ // setup pen
+
+ // TODO: * m_dc->m_scaleX
+ double penWidth = m_pen.GetWidth();
+ if (penWidth <= 0.0)
+ penWidth = 0.1;
+
+ cairo_set_line_width(m_context,penWidth);
+ cairo_set_source_rgba(m_context,m_pen.GetColour().Red()/255.0,
+ m_pen.GetColour().Green()/255.0, m_pen.GetColour().Blue()/255.0,m_pen.GetColour().Alpha()/255.0);
+
+ cairo_line_cap_t cap;
+ switch ( m_pen.GetCap() )
+ {
+ case wxCAP_ROUND :
+ cap = CAIRO_LINE_CAP_ROUND;
+ break;
+
+ case wxCAP_PROJECTING :
+ cap = CAIRO_LINE_CAP_SQUARE;
+ break;
+
+ case wxCAP_BUTT :
+ cap = CAIRO_LINE_CAP_BUTT;
+ break;
+
+ default :
+ cap = CAIRO_LINE_CAP_BUTT;
+ break;
+ }
+ cairo_set_line_cap(m_context,cap);
+
+ cairo_line_join_t join;
+ switch ( m_pen.GetJoin() )
+ {
+ case wxJOIN_BEVEL :
+ join = CAIRO_LINE_JOIN_BEVEL;
+ break;
+
+ case wxJOIN_MITER :
+ join = CAIRO_LINE_JOIN_MITER;
+ break;
+
+ case wxJOIN_ROUND :
+ join = CAIRO_LINE_JOIN_ROUND;
+ break;
+
+ default :
+ join = CAIRO_LINE_JOIN_MITER;
+ break;
+ }
+ cairo_set_line_join(m_context,join);
+
+ int num_dashes = 0;
+ const double * dashes = NULL;
+ double offset = 0.0;
+
+ const double dashUnit = penWidth < 1.0 ? 1.0 : penWidth;
+
+ double *userLengths = NULL;
+ const double dotted[] =
+ {
+ dashUnit , dashUnit + 2.0
+ };
+ const double short_dashed[] =
+ {
+ 9.0 , 6.0
+ };
+ const double dashed[] =
+ {
+ 19.0 , 9.0
+ };
+ const double dotted_dashed[] =
+ {
+ 9.0 , 6.0 , 3.0 , 3.0
+ };
+
+ switch ( m_pen.GetStyle() )
+ {
+ case wxSOLID :
+ break;
+
+ case wxDOT :
+ dashes = dotted ;
+ num_dashes = WXSIZEOF(dotted)
+ ;
+ break;
+
+ case wxLONG_DASH :
+ dashes = dotted ;
+ num_dashes = WXSIZEOF(dashed);
+ break;
+
+ case wxSHORT_DASH :
+ dashes = dotted ;
+ num_dashes = WXSIZEOF(short_dashed);
+ break;
+
+ case wxDOT_DASH :
+ dashes = dotted ;
+ num_dashes = WXSIZEOF(dotted_dashed);
+ break;
+
+ case wxUSER_DASH :
+ {
+ wxDash *wxdashes ;
+ num_dashes = m_pen.GetDashes( &wxdashes ) ;
+ if ((wxdashes != NULL) && (num_dashes > 0))
+ {
+ userLengths = new double[num_dashes] ;
+ for ( int i = 0 ; i < num_dashes ; ++i )
+ {
+ userLengths[i] = wxdashes[i] * dashUnit ;
+
+ if ( i % 2 == 1 && userLengths[i] < dashUnit + 2.0 )
+ userLengths[i] = dashUnit + 2.0 ;
+ else if ( i % 2 == 0 && userLengths[i] < dashUnit )
+ userLengths[i] = dashUnit ;
+ }
+ }
+ dashes = userLengths ;
+ }
+ break;
+ case wxSTIPPLE :
+ {
+ /*
+ wxBitmap* bmp = pen.GetStipple();
+ if ( bmp && bmp->Ok() )
+ {
+ wxDELETE( m_penImage );
+ wxDELETE( m_penBrush );
+ m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
+ m_penBrush = new TextureBrush(m_penImage);
+ m_pen->SetBrush( m_penBrush );
+ }
+ */
+ }
+ break;
+ default :
+ if ( m_pen.GetStyle() >= wxFIRST_HATCH && m_pen.GetStyle() <= wxLAST_HATCH )
+ {
+ /*
+ wxDELETE( m_penBrush );
+ HatchStyle style = HatchStyleHorizontal;
+ switch( pen.GetStyle() )
+ {
+ case wxBDIAGONAL_HATCH :
+ style = HatchStyleBackwardDiagonal;
+ break ;
+ case wxCROSSDIAG_HATCH :
+ style = HatchStyleDiagonalCross;
+ break ;
+ case wxFDIAGONAL_HATCH :
+ style = HatchStyleForwardDiagonal;
+ break ;
+ case wxCROSS_HATCH :
+ style = HatchStyleCross;
+ break ;
+ case wxHORIZONTAL_HATCH :
+ style = HatchStyleHorizontal;
+ break ;
+ case wxVERTICAL_HATCH :
+ style = HatchStyleVertical;
+ break ;
+
+ }
+ m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
+ pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
+ m_pen->SetBrush( m_penBrush )
+ */
+ }
+ break;
+ }
+
+ cairo_set_dash(m_context,(double*)dashes,num_dashes,offset);
+ if ( userLengths )
+ delete[] userLengths;
+ cairo_stroke(m_context);
+ cairo_path_destroy(cp);
+}
+
+void wxCairoContext::FillPath( const wxGraphicsPath *p , int fillStyle )
+{
+ if ( !m_brushTransparent )
+ {
+ const wxCairoPath* path = dynamic_cast< const wxCairoPath*>( p );
+ cairo_path_t* cp = path->GetPath() ;
+ cairo_append_path(m_context,cp);
+
+ if ( m_brushPattern )
+ {
+ cairo_set_source(m_context,m_brushPattern);
+ }
+ else
+ {
+ cairo_set_source_rgba(m_context,m_brush.GetColour().Red()/255.0,
+ m_brush.GetColour().Green()/255.0,
+ m_brush.GetColour().Blue()/255.0,
+ m_brush.GetColour().Alpha()/255.0);
+ }
+
+ cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
+ cairo_fill(m_context);
+ cairo_path_destroy(cp);
+ }
+}
+
+wxGraphicsPath* wxCairoContext::CreatePath()
+{
+ return new wxCairoPath();
+}
+
+void wxCairoContext::Rotate( wxDouble angle )
+{
+ cairo_rotate(m_context,angle);
+}
+
+void wxCairoContext::Translate( wxDouble dx , wxDouble dy )
+{
+ cairo_translate(m_context,dx,dy);
+}
+
+void wxCairoContext::Scale( wxDouble xScale , wxDouble yScale )
+{
+ cairo_scale(m_context,xScale,yScale);
+ /*
+ PointF penWidth( m_pen->GetWidth(), 0);
+ Matrix matrix ;
+ if ( !m_penTransparent )
+ {
+ m_context->GetTransform(&matrix);
+ matrix.TransformVectors(&penWidth);
+ }
+ m_context->ScaleTransform(xScale,yScale);
+ if ( !m_penTransparent )
+ {
+ m_context->GetTransform(&matrix);
+ matrix.Invert();
+ matrix.TransformVectors(&penWidth) ;
+ m_pen->SetWidth( sqrt( penWidth.X*penWidth.X + penWidth.Y*penWidth.Y));
+ }
+ */
+}
+
+void wxCairoContext::PushState()
+{
+ cairo_save(m_context);
+}
+
+void wxCairoContext::PopState()
+{
+ cairo_restore(m_context);
+}
+
+void wxCairoContext::SetTextColor( const wxColour &col )
+{
+ m_textColour = col;
+}
+
+void wxCairoContext::SetPen( const wxPen &pen )
+{
+ m_pen = pen ;
+ m_penTransparent = pen.GetStyle() == wxTRANSPARENT;
+ if ( m_penTransparent )
+ return;
+
+ /*
+
+ case wxSTIPPLE :
+ {
+ wxBitmap* bmp = pen.GetStipple();
+ if ( bmp && bmp->Ok() )
+ {
+ wxDELETE( m_penImage );
+ wxDELETE( m_penBrush );
+ m_penImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
+ m_penBrush = new TextureBrush(m_penImage);
+ m_pen->SetBrush( m_penBrush );
+ }
+
+ }
+ break;
+ default :
+ if ( pen.GetStyle() >= wxFIRST_HATCH && pen.GetStyle() <= wxLAST_HATCH )
+ {
+ wxDELETE( m_penBrush );
+ HatchStyle style = HatchStyleHorizontal;
+ switch( pen.GetStyle() )
+ {
+ case wxBDIAGONAL_HATCH :
+ style = HatchStyleBackwardDiagonal;
+ break ;
+ case wxCROSSDIAG_HATCH :
+ style = HatchStyleDiagonalCross;
+ break ;
+ case wxFDIAGONAL_HATCH :
+ style = HatchStyleForwardDiagonal;
+ break ;
+ case wxCROSS_HATCH :
+ style = HatchStyleCross;
+ break ;
+ case wxHORIZONTAL_HATCH :
+ style = HatchStyleHorizontal;
+ break ;
+ case wxVERTICAL_HATCH :
+ style = HatchStyleVertical;
+ break ;
+
+ }
+ m_penBrush = new HatchBrush(style,Color( pen.GetColour().Alpha() , pen.GetColour().Red() ,
+ pen.GetColour().Green() , pen.GetColour().Blue() ), Color.Transparent );
+ m_pen->SetBrush( m_penBrush );
+ }
+ break;
+ }
+ if ( dashStyle != DashStyleSolid )
+ m_pen->SetDashStyle(dashStyle);
+ */
+}
+
+void wxCairoContext::SetBrush( const wxBrush &brush )
+{
+ m_brush = brush;
+ if (m_brushPattern)
+ {
+ cairo_pattern_destroy(m_brushPattern);
+ m_brushPattern = NULL;
+ }
+ m_brushTransparent = brush.GetStyle() == wxTRANSPARENT;
+
+ if ( m_brushTransparent )
+ return;
+ /*
+ wxDELETE(m_brush);
+
+ if ( brush.GetStyle() == wxSOLID)
+ {
+ m_brush = new SolidBrush( Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
+ brush.GetColour().Green() , brush.GetColour().Blue() ) );
+ }
+ else if ( brush.IsHatch() )
+ {
+ HatchStyle style = HatchStyleHorizontal;
+ switch( brush.GetStyle() )
+ {
+ case wxBDIAGONAL_HATCH :
+ style = HatchStyleBackwardDiagonal;
+ break ;
+ case wxCROSSDIAG_HATCH :
+ style = HatchStyleDiagonalCross;
+ break ;
+ case wxFDIAGONAL_HATCH :
+ style = HatchStyleForwardDiagonal;
+ break ;
+ case wxCROSS_HATCH :
+ style = HatchStyleCross;
+ break ;
+ case wxHORIZONTAL_HATCH :
+ style = HatchStyleHorizontal;
+ break ;
+ case wxVERTICAL_HATCH :
+ style = HatchStyleVertical;
+ break ;
+
+ }
+ m_brush = new HatchBrush(style,Color( brush.GetColour().Alpha() , brush.GetColour().Red() ,
+ brush.GetColour().Green() , brush.GetColour().Blue() ), Color.Transparent );
+ }
+ else
+ {
+ wxBitmap* bmp = brush.GetStipple();
+ if ( bmp && bmp->Ok() )
+ {
+ wxDELETE( m_brushImage );
+ m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
+ m_brush = new TextureBrush(m_brushImage);
+ }
+ }
+ */
+}
+
+void wxCairoContext::SetLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, const wxColour&c1, const wxColour&c2)
+{
+ if ( m_brushPattern )
+ {
+ cairo_pattern_destroy(m_brushPattern);
+ m_brushPattern=NULL;
+ }
+
+ m_brushTransparent = false;
+ m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
+ cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,c1.Red()/255.0,
+ c1.Green()/255.0, c1.Blue()/255.0,c1.Alpha()/255.0);
+ cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,c2.Red()/255.0,
+ c2.Green()/255.0, c2.Blue()/255.0,c2.Alpha()/255.0);
+ wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
+}
+
+void wxCairoContext::SetRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius,
+ const wxColour &oColor, const wxColour &cColor)
+{
+ if ( m_brushPattern )
+ {
+ cairo_pattern_destroy(m_brushPattern);
+ m_brushPattern=NULL;
+ }
+
+ m_brushTransparent = false;
+ m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
+ cairo_pattern_add_color_stop_rgba(m_brushPattern,0.0,oColor.Red()/255.0,
+ oColor.Green()/255.0, oColor.Blue()/255.0,oColor.Alpha()/255.0);
+ cairo_pattern_add_color_stop_rgba(m_brushPattern,1.0,cColor.Red()/255.0,
+ cColor.Green()/255.0, cColor.Blue()/255.0,cColor.Alpha()/255.0);
+ wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS, wxT("Couldn't create cairo pattern"));
+ }
+
+void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+ /*
+ Bitmap* image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
+ m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
+ delete image ;
+ */
+}
+
+void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
+{
+ /*
+ Bitmap* image = Bitmap::FromHICON((HICON)icon.GetHICON());
+ m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
+ delete image ;
+ */
+}
+
+
+void wxCairoContext::DrawText( const wxString &str, wxDouble x, wxDouble y )
+{
+ if ( str.IsEmpty())
+ return ;
+ cairo_move_to(m_context,x,y);
+ const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
+
+ cairo_set_source_rgba(m_context,m_textColour.Red()/255.0,
+ m_textColour.Green()/255.0, m_textColour.Blue()/255.0,m_textColour.Alpha()/255.0);
+ cairo_show_text(m_context,buf);
+
+ // TODO m_backgroundMode == wxSOLID
+}
+
+void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
+ wxDouble *descent, wxDouble *externalLeading ) const
+{
+ /*
+ wxWCharBuffer s = str.wc_str( *wxConvUI );
+ FontFamily ffamily ;
+
+ m_font->GetFamily(&ffamily) ;
+
+ REAL factorY = m_context->GetDpiY() / 72.0 ;
+
+ REAL rDescent = ffamily.GetCellDescent(FontStyleRegular) *
+ m_font->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
+ REAL rAscent = ffamily.GetCellAscent(FontStyleRegular) *
+ m_font->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
+ REAL rHeight = ffamily.GetLineSpacing(FontStyleRegular) *
+ m_font->GetSize() / ffamily.GetEmHeight(FontStyleRegular);
+
+ if ( height )
+ *height = rHeight * factorY + 0.5 ;
+ if ( descent )
+ *descent = rDescent * factorY + 0.5 ;
+ if ( externalLeading )
+ *externalLeading = (rHeight - rAscent - rDescent) * factorY + 0.5 ;
+ // measuring empty strings is not guaranteed, so do it by hand
+ if ( str.IsEmpty())
+ {
+ if ( width )
+ *width = 0 ;
+ }
+ else
+ {
+ // MeasureString does return a rectangle that is way too large, so it is
+ // not usable here
+ RectF layoutRect(0,0, 100000.0f, 100000.0f);
+ StringFormat strFormat;
+ CharacterRange strRange(0,wcslen(s));
+ strFormat.SetMeasurableCharacterRanges(1,&strRange);
+ Region region ;
+ m_context->MeasureCharacterRanges(s, -1 , m_font,layoutRect, &strFormat,1,®ion) ;
+ RectF bbox ;
+ region.GetBounds(&bbox,m_context);
+ if ( width )
+ *width = bbox.GetRight()-bbox.GetLeft()+0.5;
+ }
+ */
+}
+
+void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
+{
+ widths.Empty();
+ widths.Add(0, text.length());
+
+ if (text.empty())
+ return;
+ /*
+ wxWCharBuffer ws = text.wc_str( *wxConvUI );
+ size_t len = wcslen( ws ) ;
+ wxASSERT_MSG(text.length() == len , wxT("GetPartialTextExtents not yet implemented for multichar situations"));
+
+ RectF layoutRect(0,0, 100000.0f, 100000.0f);
+ StringFormat strFormat;
+
+ CharacterRange* ranges = new CharacterRange[len] ;
+ Region* regions = new Region[len];
+ for( int i = 0 ; i < len ; ++i)
+ {
+ ranges[i].First = i ;
+ ranges[i].Length = 1 ;
+ }
+ strFormat.SetMeasurableCharacterRanges(len,ranges);
+ m_context->MeasureCharacterRanges(ws, -1 , m_font,layoutRect, &strFormat,1,regions) ;
+
+ RectF bbox ;
+ for ( int i = 0 ; i < len ; ++i)
+ {
+ regions[i].GetBounds(&bbox,m_context);
+ widths[i] = bbox.GetRight()-bbox.GetLeft();
+ }
+ */
+}
+
+void wxCairoContext::SetFont( const wxFont &font )
+{
+ cairo_select_font_face(m_context,font.GetFaceName().mb_str(wxConvUTF8),
+ font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL,
+ font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL);
+
+ cairo_set_font_size(m_context,font.GetPointSize());
+ // TODO UNDERLINE
+ // TODO FIX SIZE
+}
+
+wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc )
+{
+ return new wxCairoContext(dc);
+}
\ No newline at end of file
projects / wxWidgets.git / commitdiff
