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dolphin/Externals/wxWidgets3/src/generic/graphicc.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name: src/generic/graphicc.cpp
// Purpose: cairo device context class
// Author: Stefan Csomor
// Modified by:
// Created: 2006-10-03
// Copyright: (c) 2006 Stefan Csomor
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_GRAPHICS_CONTEXT
#include "wx/graphics.h"
#if wxUSE_CAIRO
// keep cairo.h from defining dllimport as we're defining the symbols inside
// the wx dll in order to load them dynamically.
#define cairo_public
#include <cairo.h>
bool wxCairoInit();
#ifndef WX_PRECOMP
#include "wx/bitmap.h"
#include "wx/icon.h"
#include "wx/dcclient.h"
#include "wx/dcmemory.h"
#include "wx/dcprint.h"
#include "wx/window.h"
#endif
#include "wx/private/graphics.h"
#include "wx/rawbmp.h"
#include "wx/vector.h"
using namespace std;
//-----------------------------------------------------------------------------
// 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>
#ifdef __WXMSW__
#include <cairo-win32.h>
// Notice that the order is important: cairo-win32.h includes windows.h which
// pollutes the global name space with macros so include our own header which
// #undefines them after it.
#include "wx/msw/private.h"
#endif
#ifdef __WXGTK__
#include <gtk/gtk.h>
#include "wx/fontutil.h"
#ifndef __WXGTK3__
#include "wx/gtk/dc.h"
#endif
#endif
#ifdef __WXMAC__
#include "wx/osx/private.h"
#include <cairo-quartz.h>
#include <cairo-atsui.h>
#endif
class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
{
public :
wxCairoPathData(wxGraphicsRenderer* renderer, cairo_t* path = NULL);
~wxCairoPathData();
virtual wxGraphicsObjectRefData *Clone() const;
//
// 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) const;
// adds another path
virtual void AddPath( const wxGraphicsPathData* path );
// 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 ) ;
*/
// returns the native path
virtual void * GetNativePath() const ;
// give the native path returned by GetNativePath() back (there might be some deallocations necessary)
virtual void UnGetNativePath(void *p) const;
// transforms each point of this path by the matrix
virtual void Transform( const wxGraphicsMatrixData* matrix ) ;
// gets the bounding box enclosing all points (possibly including control points)
virtual void GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const;
virtual bool Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle = wxWINDING_RULE) const;
private :
cairo_t* m_pathContext;
};
class WXDLLIMPEXP_CORE wxCairoMatrixData : public wxGraphicsMatrixData
{
public :
wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix = NULL ) ;
virtual ~wxCairoMatrixData() ;
virtual wxGraphicsObjectRefData *Clone() const ;
// concatenates the matrix
virtual void Concat( const wxGraphicsMatrixData *t );
// sets the matrix to the respective values
virtual void Set(wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
wxDouble tx=0.0, wxDouble ty=0.0);
// gets the component valuess of the matrix
virtual void Get(wxDouble* a=NULL, wxDouble* b=NULL, wxDouble* c=NULL,
wxDouble* d=NULL, wxDouble* tx=NULL, wxDouble* ty=NULL) const;
// makes this the inverse matrix
virtual void Invert();
// returns true if the elements of the transformation matrix are equal ?
virtual bool IsEqual( const wxGraphicsMatrixData* t) const ;
// return true if this is the identity matrix
virtual bool IsIdentity() const;
//
// transformation
//
// add the translation to this matrix
virtual void Translate( wxDouble dx , wxDouble dy );
// add the scale to this matrix
virtual void Scale( wxDouble xScale , wxDouble yScale );
// add the rotation to this matrix (radians)
virtual void Rotate( wxDouble angle );
//
// apply the transforms
//
// applies that matrix to the point
virtual void TransformPoint( wxDouble *x, wxDouble *y ) const;
// applies the matrix except for translations
virtual void TransformDistance( wxDouble *dx, wxDouble *dy ) const;
// returns the native representation
virtual void * GetNativeMatrix() const;
private:
cairo_matrix_t m_matrix ;
} ;
// Common base class for pens and brushes.
class wxCairoPenBrushBaseData : public wxGraphicsObjectRefData
{
public:
wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
const wxColour& col,
bool isTransparent);
virtual ~wxCairoPenBrushBaseData();
virtual void Apply( wxGraphicsContext* context );
protected:
// Call this to use the given bitmap as stipple. Bitmap must be non-null
// and valid.
void InitStipple(wxBitmap* bmp);
// Call this to use the given hatch style. Hatch style must be valid.
void InitHatch(wxHatchStyle hatchStyle);
double m_red;
double m_green;
double m_blue;
double m_alpha;
cairo_pattern_t* m_pattern;
class wxCairoBitmapData* m_bmpdata;
private:
// Called once to allocate m_pattern if needed.
void InitHatchPattern(cairo_t* ctext);
wxHatchStyle m_hatchStyle;
wxDECLARE_NO_COPY_CLASS(wxCairoPenBrushBaseData);
};
class WXDLLIMPEXP_CORE wxCairoPenData : public wxCairoPenBrushBaseData
{
public:
wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen );
~wxCairoPenData();
void Init();
virtual void Apply( wxGraphicsContext* context );
virtual wxDouble GetWidth() { return m_width; }
private :
double m_width;
cairo_line_cap_t m_cap;
cairo_line_join_t m_join;
int m_count;
const double *m_lengths;
double *m_userLengths;
wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
};
class WXDLLIMPEXP_CORE wxCairoBrushData : public wxCairoPenBrushBaseData
{
public:
wxCairoBrushData( wxGraphicsRenderer* renderer );
wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
wxDouble x2, wxDouble y2,
const wxGraphicsGradientStops& stops);
void CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
wxDouble xc, wxDouble yc, wxDouble radius,
const wxGraphicsGradientStops& stops);
protected:
virtual void Init();
// common part of Create{Linear,Radial}GradientBrush()
void AddGradientStops(const wxGraphicsGradientStops& stops);
};
class wxCairoFontData : public wxGraphicsObjectRefData
{
public:
wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font, const wxColour& col );
wxCairoFontData(wxGraphicsRenderer* renderer,
double sizeInPixels,
const wxString& facename,
int flags,
const wxColour& col);
~wxCairoFontData();
virtual bool Apply( wxGraphicsContext* context );
#ifdef __WXGTK__
const wxFont& GetFont() const { return m_wxfont; }
#endif
private :
void InitColour(const wxColour& col);
void InitFontComponents(const wxString& facename,
cairo_font_slant_t slant,
cairo_font_weight_t weight);
double m_size;
double m_red;
double m_green;
double m_blue;
double m_alpha;
#ifdef __WXMAC__
cairo_font_face_t *m_font;
#elif defined(__WXGTK__)
wxFont m_wxfont;
#endif
// These members are used when the font is created from its face name and
// flags (and not from wxFont) and also even when creating it from wxFont
// on the platforms not covered above.
//
// Notice that we can't use cairo_font_face_t instead of storing those,
// even though it would be simpler and need less #ifdefs, because
// cairo_toy_font_face_create() that we'd need to create it is only
// available in Cairo 1.8 and we require just 1.2 currently. If we do drop
// support for < 1.8 versions in the future it would be definitely better
// to use cairo_toy_font_face_create() instead.
wxCharBuffer m_fontName;
cairo_font_slant_t m_slant;
cairo_font_weight_t m_weight;
};
class wxCairoBitmapData : public wxGraphicsBitmapData
{
public:
wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp );
#if wxUSE_IMAGE
wxCairoBitmapData(wxGraphicsRenderer* renderer, const wxImage& image);
#endif // wxUSE_IMAGE
wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap );
~wxCairoBitmapData();
virtual cairo_surface_t* GetCairoSurface() { return m_surface; }
virtual cairo_pattern_t* GetCairoPattern() { return m_pattern; }
virtual void* GetNativeBitmap() const { return m_surface; }
virtual wxSize GetSize() { return wxSize(m_width, m_height); }
#if wxUSE_IMAGE
wxImage ConvertToImage() const;
#endif // wxUSE_IMAGE
private :
// Allocate m_buffer for the bitmap of the given size in the given format.
//
// Returns the stride used for the buffer.
int InitBuffer(int width, int height, cairo_format_t format);
// Really create the surface using the buffer (which was supposed to be
// filled since InitBuffer() call).
void InitSurface(cairo_format_t format, int stride);
cairo_surface_t* m_surface;
cairo_pattern_t* m_pattern;
int m_width;
int m_height;
unsigned char* m_buffer;
};
class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
{
public:
wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
#ifdef __WXGTK__
wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window );
#endif
#ifdef __WXMSW__
wxCairoContext( wxGraphicsRenderer* renderer, HDC context );
#endif
wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context );
wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window);
// If this ctor is used, Init() must be called by the derived class later.
wxCairoContext( wxGraphicsRenderer* renderer );
virtual ~wxCairoContext();
virtual bool ShouldOffset() const
{
if ( !m_enableOffset )
return false;
int penwidth = 0 ;
if ( !m_pen.IsNull() )
{
penwidth = (int)((wxCairoPenData*)m_pen.GetRefData())->GetWidth();
if ( penwidth == 0 )
penwidth = 1;
}
return ( penwidth % 2 ) == 1;
}
virtual void Clip( const wxRegion &region );
#ifdef __WXMSW__
cairo_surface_t* m_mswSurface;
WindowHDC m_mswWindowHDC;
#endif
// 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();
virtual bool SetAntialiasMode(wxAntialiasMode antialias);
virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
virtual bool SetCompositionMode(wxCompositionMode op);
virtual void BeginLayer(wxDouble opacity);
virtual void EndLayer();
virtual void StrokePath( const wxGraphicsPath& p );
virtual void FillPath( const wxGraphicsPath& p , wxPolygonFillMode fillStyle = wxWINDING_RULE );
virtual void Translate( wxDouble dx , wxDouble dy );
virtual void Scale( wxDouble xScale , wxDouble yScale );
virtual void Rotate( wxDouble angle );
// concatenates this transform with the current transform of this context
virtual void ConcatTransform( const wxGraphicsMatrix& matrix );
// sets the transform of this context
virtual void SetTransform( const wxGraphicsMatrix& matrix );
// gets the matrix of this context
virtual wxGraphicsMatrix GetTransform() const;
virtual void DrawBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
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 GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const;
virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
protected:
virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
void Init(cairo_t *context);
private:
cairo_t* m_context;
wxVector<float> m_layerOpacities;
wxDECLARE_NO_COPY_CLASS(wxCairoContext);
};
#if wxUSE_IMAGE
// ----------------------------------------------------------------------------
// wxCairoImageContext: context associated with a wxImage.
// ----------------------------------------------------------------------------
class wxCairoImageContext : public wxCairoContext
{
public:
wxCairoImageContext(wxGraphicsRenderer* renderer, wxImage& image) :
wxCairoContext(renderer),
m_image(image),
m_data(renderer, image)
{
Init(cairo_create(m_data.GetCairoSurface()));
}
virtual ~wxCairoImageContext()
{
m_image = m_data.ConvertToImage();
}
private:
wxImage& m_image;
wxCairoBitmapData m_data;
wxDECLARE_NO_COPY_CLASS(wxCairoImageContext);
};
#endif // wxUSE_IMAGE
// ----------------------------------------------------------------------------
// wxCairoPenBrushBaseData implementation
//-----------------------------------------------------------------------------
wxCairoPenBrushBaseData::wxCairoPenBrushBaseData(wxGraphicsRenderer* renderer,
const wxColour& col,
bool isTransparent)
: wxGraphicsObjectRefData(renderer)
{
m_hatchStyle = wxHATCHSTYLE_INVALID;
m_pattern = NULL;
m_bmpdata = NULL;
if ( isTransparent )
{
m_red =
m_green =
m_blue =
m_alpha = 0;
}
else // non-transparent
{
m_red = col.Red()/255.0;
m_green = col.Green()/255.0;
m_blue = col.Blue()/255.0;
m_alpha = col.Alpha()/255.0;
}
}
wxCairoPenBrushBaseData::~wxCairoPenBrushBaseData()
{
if (m_bmpdata)
{
// Deleting the bitmap data also deletes the pattern referenced by
// m_pattern, so set it to NULL to avoid deleting it twice.
delete m_bmpdata;
m_pattern = NULL;
}
if (m_pattern)
cairo_pattern_destroy(m_pattern);
}
void wxCairoPenBrushBaseData::InitHatchPattern(cairo_t* ctext)
{
cairo_surface_t* const
surface = cairo_surface_create_similar(
cairo_get_target(ctext), CAIRO_CONTENT_COLOR_ALPHA, 10, 10
);
cairo_t* const cr = cairo_create(surface);
cairo_set_line_cap(cr, CAIRO_LINE_CAP_SQUARE);
cairo_set_line_width(cr, 1);
cairo_set_line_join(cr,CAIRO_LINE_JOIN_MITER);
switch ( m_hatchStyle )
{
case wxHATCHSTYLE_CROSS:
cairo_move_to(cr, 5, 0);
cairo_line_to(cr, 5, 10);
cairo_move_to(cr, 0, 5);
cairo_line_to(cr, 10, 5);
break;
case wxHATCHSTYLE_BDIAGONAL:
cairo_move_to(cr, 0, 10);
cairo_line_to(cr, 10, 0);
break;
case wxHATCHSTYLE_FDIAGONAL:
cairo_move_to(cr, 0, 0);
cairo_line_to(cr, 10, 10);
break;
case wxHATCHSTYLE_CROSSDIAG:
cairo_move_to(cr, 0, 0);
cairo_line_to(cr, 10, 10);
cairo_move_to(cr, 10, 0);
cairo_line_to(cr, 0, 10);
break;
case wxHATCHSTYLE_HORIZONTAL:
cairo_move_to(cr, 0, 5);
cairo_line_to(cr, 10, 5);
break;
case wxHATCHSTYLE_VERTICAL:
cairo_move_to(cr, 5, 0);
cairo_line_to(cr, 5, 10);
break;
default:
wxFAIL_MSG(wxS("Invalid hatch pattern style."));
}
cairo_set_source_rgba(cr, m_red, m_green, m_blue, m_alpha);
cairo_stroke(cr);
cairo_destroy(cr);
m_pattern = cairo_pattern_create_for_surface(surface);
cairo_surface_destroy(surface);
cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
}
void wxCairoPenBrushBaseData::InitStipple(wxBitmap* bmp)
{
wxCHECK_RET( bmp && bmp->IsOk(), wxS("Invalid stippled bitmap") );
m_bmpdata = new wxCairoBitmapData(GetRenderer(), *bmp);
m_pattern = m_bmpdata->GetCairoPattern();
cairo_pattern_set_extend(m_pattern, CAIRO_EXTEND_REPEAT);
}
void wxCairoPenBrushBaseData::InitHatch(wxHatchStyle hatchStyle)
{
// We can't create m_pattern right now as we don't have the Cairo context
// needed for it, so just remember that we need to do it.
m_hatchStyle = hatchStyle;
}
void wxCairoPenBrushBaseData::Apply( wxGraphicsContext* context )
{
cairo_t* const ctext = (cairo_t*) context->GetNativeContext();
if ( m_hatchStyle != wxHATCHSTYLE_INVALID && !m_pattern )
InitHatchPattern(ctext);
if ( m_pattern )
cairo_set_source(ctext, m_pattern);
else
cairo_set_source_rgba(ctext, m_red, m_green, m_blue, m_alpha);
}
//-----------------------------------------------------------------------------
// wxCairoPenData implementation
//-----------------------------------------------------------------------------
wxCairoPenData::~wxCairoPenData()
{
delete[] m_userLengths;
}
void wxCairoPenData::Init()
{
m_lengths = NULL;
m_userLengths = NULL;
m_width = 0;
m_count = 0;
}
wxCairoPenData::wxCairoPenData( wxGraphicsRenderer* renderer, const wxPen &pen )
: wxCairoPenBrushBaseData(renderer, pen.GetColour(), pen.IsTransparent())
{
Init();
m_width = pen.GetWidth();
if (m_width <= 0.0)
m_width = 0.1;
switch ( pen.GetCap() )
{
case wxCAP_ROUND :
m_cap = CAIRO_LINE_CAP_ROUND;
break;
case wxCAP_PROJECTING :
m_cap = CAIRO_LINE_CAP_SQUARE;
break;
case wxCAP_BUTT :
m_cap = CAIRO_LINE_CAP_BUTT;
break;
default :
m_cap = CAIRO_LINE_CAP_BUTT;
break;
}
switch ( pen.GetJoin() )
{
case wxJOIN_BEVEL :
m_join = CAIRO_LINE_JOIN_BEVEL;
break;
case wxJOIN_MITER :
m_join = CAIRO_LINE_JOIN_MITER;
break;
case wxJOIN_ROUND :
m_join = CAIRO_LINE_JOIN_ROUND;
break;
default :
m_join = CAIRO_LINE_JOIN_MITER;
break;
}
const double dashUnit = m_width < 1.0 ? 1.0 : m_width;
const double dotted[] =
{
dashUnit , dashUnit + 2.0
};
static const double short_dashed[] =
{
9.0 , 6.0
};
static const double dashed[] =
{
19.0 , 9.0
};
static const double dotted_dashed[] =
{
9.0 , 6.0 , 3.0 , 3.0
};
switch ( pen.GetStyle() )
{
case wxPENSTYLE_SOLID :
break;
case wxPENSTYLE_DOT :
m_count = WXSIZEOF(dotted);
m_userLengths = new double[ m_count ] ;
memcpy( m_userLengths, dotted, sizeof(dotted) );
m_lengths = m_userLengths;
break;
case wxPENSTYLE_LONG_DASH :
m_lengths = dashed ;
m_count = WXSIZEOF(dashed);
break;
case wxPENSTYLE_SHORT_DASH :
m_lengths = short_dashed ;
m_count = WXSIZEOF(short_dashed);
break;
case wxPENSTYLE_DOT_DASH :
m_lengths = dotted_dashed ;
m_count = WXSIZEOF(dotted_dashed);
break;
case wxPENSTYLE_USER_DASH :
{
wxDash *wxdashes ;
m_count = pen.GetDashes( &wxdashes ) ;
if ((wxdashes != NULL) && (m_count > 0))
{
m_userLengths = new double[m_count] ;
for ( int i = 0 ; i < m_count ; ++i )
{
m_userLengths[i] = wxdashes[i] * dashUnit ;
if ( i % 2 == 1 && m_userLengths[i] < dashUnit + 2.0 )
m_userLengths[i] = dashUnit + 2.0 ;
else if ( i % 2 == 0 && m_userLengths[i] < dashUnit )
m_userLengths[i] = dashUnit ;
}
}
m_lengths = m_userLengths ;
}
break;
case wxPENSTYLE_STIPPLE :
case wxPENSTYLE_STIPPLE_MASK :
case wxPENSTYLE_STIPPLE_MASK_OPAQUE :
InitStipple(pen.GetStipple());
break;
default :
if ( pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
&& pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
{
InitHatch(static_cast<wxHatchStyle>(pen.GetStyle()));
}
break;
}
}
void wxCairoPenData::Apply( wxGraphicsContext* context )
{
wxCairoPenBrushBaseData::Apply(context);
cairo_t * ctext = (cairo_t*) context->GetNativeContext();
cairo_set_line_width(ctext,m_width);
cairo_set_line_cap(ctext,m_cap);
cairo_set_line_join(ctext,m_join);
cairo_set_dash(ctext,(double*)m_lengths,m_count,0.0);
}
//-----------------------------------------------------------------------------
// wxCairoBrushData implementation
//-----------------------------------------------------------------------------
wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer )
: wxCairoPenBrushBaseData(renderer, wxColour(), true /* transparent */)
{
Init();
}
wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer,
const wxBrush &brush )
: wxCairoPenBrushBaseData(renderer, brush.GetColour(), brush.IsTransparent())
{
Init();
switch ( brush.GetStyle() )
{
case wxBRUSHSTYLE_STIPPLE:
case wxBRUSHSTYLE_STIPPLE_MASK:
case wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE:
InitStipple(brush.GetStipple());
break;
default:
if ( brush.IsHatch() )
InitHatch(static_cast<wxHatchStyle>(brush.GetStyle()));
break;
}
}
void wxCairoBrushData::AddGradientStops(const wxGraphicsGradientStops& stops)
{
// loop over all the stops, they include the beginning and ending ones
const unsigned numStops = stops.GetCount();
for ( unsigned n = 0; n < numStops; n++ )
{
const wxGraphicsGradientStop stop = stops.Item(n);
const wxColour col = stop.GetColour();
cairo_pattern_add_color_stop_rgba
(
m_pattern,
stop.GetPosition(),
col.Red()/255.0,
col.Green()/255.0,
col.Blue()/255.0,
col.Alpha()/255.0
);
}
wxASSERT_MSG(cairo_pattern_status(m_pattern) == CAIRO_STATUS_SUCCESS,
wxT("Couldn't create cairo pattern"));
}
void
wxCairoBrushData::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
wxDouble x2, wxDouble y2,
const wxGraphicsGradientStops& stops)
{
m_pattern = cairo_pattern_create_linear(x1,y1,x2,y2);
AddGradientStops(stops);
}
void
wxCairoBrushData::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
wxDouble xc, wxDouble yc,
wxDouble radius,
const wxGraphicsGradientStops& stops)
{
m_pattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
AddGradientStops(stops);
}
void wxCairoBrushData::Init()
{
m_pattern = NULL;
m_bmpdata = NULL;
}
//-----------------------------------------------------------------------------
// wxCairoFontData implementation
//-----------------------------------------------------------------------------
void wxCairoFontData::InitColour(const wxColour& col)
{
m_red = col.Red()/255.0;
m_green = col.Green()/255.0;
m_blue = col.Blue()/255.0;
m_alpha = col.Alpha()/255.0;
}
void
wxCairoFontData::InitFontComponents(const wxString& facename,
cairo_font_slant_t slant,
cairo_font_weight_t weight)
{
m_fontName = facename.mb_str(wxConvUTF8);
m_slant = slant;
m_weight = weight;
}
wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
const wxColour& col )
: wxGraphicsObjectRefData(renderer)
#ifdef __WXGTK__
, m_wxfont(font)
#endif
{
InitColour(col);
m_size = font.GetPointSize();
#ifdef __WXMAC__
m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
#elif defined(__WXGTK__)
#else
InitFontComponents
(
font.GetFaceName(),
font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC
: CAIRO_FONT_SLANT_NORMAL,
font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD
: CAIRO_FONT_WEIGHT_NORMAL
);
#endif
}
wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
double sizeInPixels,
const wxString& facename,
int flags,
const wxColour& col) :
wxGraphicsObjectRefData(renderer)
{
InitColour(col);
// Resolution for Cairo image surfaces is 72 DPI meaning that the sizes in
// points and pixels are identical, so we can just pass the size in pixels
// directly to cairo_set_font_size().
m_size = sizeInPixels;
#if defined(__WXMAC__)
m_font = NULL;
#endif
// There is no need to set m_underlined under wxGTK in this case, it can
// only be used if m_font != NULL.
InitFontComponents
(
facename,
flags & wxFONTFLAG_ITALIC ? CAIRO_FONT_SLANT_ITALIC
: CAIRO_FONT_SLANT_NORMAL,
flags & wxFONTFLAG_BOLD ? CAIRO_FONT_WEIGHT_BOLD
: CAIRO_FONT_WEIGHT_NORMAL
);
}
wxCairoFontData::~wxCairoFontData()
{
#ifdef __WXMAC__
if ( m_font )
cairo_font_face_destroy( m_font );
#endif
}
bool wxCairoFontData::Apply( wxGraphicsContext* context )
{
cairo_t * ctext = (cairo_t*) context->GetNativeContext();
cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
#ifdef __WXGTK__
if (m_wxfont.IsOk())
{
// Nothing to do, the caller uses Pango layout functions to do
// everything.
return true;
}
#elif defined(__WXMAC__)
if ( m_font )
{
cairo_set_font_face(ctext, m_font);
cairo_set_font_size(ctext, m_size );
return true;
}
#endif
// If we get here, we must be on a platform without native font support or
// we're using toy Cairo API even under wxGTK/wxMac.
cairo_select_font_face(ctext, m_fontName, m_slant, m_weight );
cairo_set_font_size(ctext, m_size );
// Indicate that we don't use native fonts for the platforms which care
// about this (currently only wxGTK).
return false;
}
//-----------------------------------------------------------------------------
// wxCairoPathData implementation
//-----------------------------------------------------------------------------
wxCairoPathData::wxCairoPathData( wxGraphicsRenderer* renderer, cairo_t* pathcontext)
: wxGraphicsPathData(renderer)
{
if (pathcontext)
{
m_pathContext = pathcontext;
}
else
{
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
m_pathContext = cairo_create(surface);
cairo_surface_destroy (surface);
}
}
wxCairoPathData::~wxCairoPathData()
{
cairo_destroy(m_pathContext);
}
wxGraphicsObjectRefData *wxCairoPathData::Clone() const
{
cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,1,1);
cairo_t* pathcontext = cairo_create(surface);
cairo_surface_destroy (surface);
cairo_path_t* path = cairo_copy_path(m_pathContext);
cairo_append_path(pathcontext, path);
cairo_path_destroy(path);
return new wxCairoPathData( GetRenderer() ,pathcontext);
}
void* wxCairoPathData::GetNativePath() const
{
return cairo_copy_path(m_pathContext) ;
}
void wxCairoPathData::UnGetNativePath(void *p) const
{
cairo_path_destroy((cairo_path_t*)p);
}
//
// The Primitives
//
void wxCairoPathData::MoveToPoint( wxDouble x , wxDouble y )
{
cairo_move_to(m_pathContext,x,y);
}
void wxCairoPathData::AddLineToPoint( wxDouble x , wxDouble y )
{
cairo_line_to(m_pathContext,x,y);
}
void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
{
cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
cairo_append_path(m_pathContext, p);
UnGetNativePath(p);
}
void wxCairoPathData::CloseSubpath()
{
cairo_close_path(m_pathContext);
}
void wxCairoPathData::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 wxCairoPathData::GetCurrentPoint( wxDouble* x, wxDouble* y) const
{
double dx,dy;
cairo_get_current_point(m_pathContext,&dx,&dy);
if (x)
*x = dx;
if (y)
*y = dy;
}
void wxCairoPathData::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);
}
// transforms each point of this path by the matrix
void wxCairoPathData::Transform( const wxGraphicsMatrixData* matrix )
{
// as we don't have a true path object, we have to apply the inverse
// matrix to the context
cairo_matrix_t m = *((cairo_matrix_t*) matrix->GetNativeMatrix());
cairo_matrix_invert( &m );
cairo_transform(m_pathContext,&m);
}
// gets the bounding box enclosing all points (possibly including control points)
void wxCairoPathData::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const
{
double x1,y1,x2,y2;
cairo_stroke_extents( m_pathContext, &x1, &y1, &x2, &y2 );
if ( x2 < x1 )
{
*x = x2;
*w = x1-x2;
}
else
{
*x = x1;
*w = x2-x1;
}
if( y2 < y1 )
{
*y = y2;
*h = y1-y2;
}
else
{
*y = y1;
*h = y2-y1;
}
}
bool wxCairoPathData::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const
{
cairo_set_fill_rule(m_pathContext,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
return cairo_in_fill( m_pathContext, x, y) != 0;
}
//-----------------------------------------------------------------------------
// wxCairoMatrixData implementation
//-----------------------------------------------------------------------------
wxCairoMatrixData::wxCairoMatrixData(wxGraphicsRenderer* renderer, const cairo_matrix_t* matrix )
: wxGraphicsMatrixData(renderer)
{
if ( matrix )
m_matrix = *matrix;
}
wxCairoMatrixData::~wxCairoMatrixData()
{
// nothing to do
}
wxGraphicsObjectRefData *wxCairoMatrixData::Clone() const
{
return new wxCairoMatrixData(GetRenderer(),&m_matrix);
}
// concatenates the matrix
void wxCairoMatrixData::Concat( const wxGraphicsMatrixData *t )
{
cairo_matrix_multiply( &m_matrix, &m_matrix, (cairo_matrix_t*) t->GetNativeMatrix());
}
// sets the matrix to the respective values
void wxCairoMatrixData::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d,
wxDouble tx, wxDouble ty)
{
cairo_matrix_init( &m_matrix, a, b, c, d, tx, ty);
}
// gets the component valuess of the matrix
void wxCairoMatrixData::Get(wxDouble* a, wxDouble* b, wxDouble* c,
wxDouble* d, wxDouble* tx, wxDouble* ty) const
{
if (a) *a = m_matrix.xx;
if (b) *b = m_matrix.yx;
if (c) *c = m_matrix.xy;
if (d) *d = m_matrix.yy;
if (tx) *tx= m_matrix.x0;
if (ty) *ty= m_matrix.y0;
}
// makes this the inverse matrix
void wxCairoMatrixData::Invert()
{
cairo_matrix_invert( &m_matrix );
}
// returns true if the elements of the transformation matrix are equal ?
bool wxCairoMatrixData::IsEqual( const wxGraphicsMatrixData* t) const
{
const cairo_matrix_t* tm = (cairo_matrix_t*) t->GetNativeMatrix();
return (
m_matrix.xx == tm->xx &&
m_matrix.yx == tm->yx &&
m_matrix.xy == tm->xy &&
m_matrix.yy == tm->yy &&
m_matrix.x0 == tm->x0 &&
m_matrix.y0 == tm->y0 ) ;
}
// return true if this is the identity matrix
bool wxCairoMatrixData::IsIdentity() const
{
return ( m_matrix.xx == 1 && m_matrix.yy == 1 &&
m_matrix.yx == 0 && m_matrix.xy == 0 && m_matrix.x0 == 0 && m_matrix.y0 == 0);
}
//
// transformation
//
// add the translation to this matrix
void wxCairoMatrixData::Translate( wxDouble dx , wxDouble dy )
{
cairo_matrix_translate( &m_matrix, dx, dy) ;
}
// add the scale to this matrix
void wxCairoMatrixData::Scale( wxDouble xScale , wxDouble yScale )
{
cairo_matrix_scale( &m_matrix, xScale, yScale) ;
}
// add the rotation to this matrix (radians)
void wxCairoMatrixData::Rotate( wxDouble angle )
{
cairo_matrix_rotate( &m_matrix, angle) ;
}
//
// apply the transforms
//
// applies that matrix to the point
void wxCairoMatrixData::TransformPoint( wxDouble *x, wxDouble *y ) const
{
double lx = *x, ly = *y ;
cairo_matrix_transform_point( &m_matrix, &lx, &ly);
*x = lx;
*y = ly;
}
// applies the matrix except for translations
void wxCairoMatrixData::TransformDistance( wxDouble *dx, wxDouble *dy ) const
{
double lx = *dx, ly = *dy ;
cairo_matrix_transform_distance( &m_matrix, &lx, &ly);
*dx = lx;
*dy = ly;
}
// returns the native representation
void * wxCairoMatrixData::GetNativeMatrix() const
{
return (void*) &m_matrix;
}
// ----------------------------------------------------------------------------
// wxCairoBitmap implementation
// ----------------------------------------------------------------------------
int wxCairoBitmapData::InitBuffer(int width, int height, cairo_format_t format)
{
wxUnusedVar(format); // Only really unused with Cairo < 1.6.
// Determine the stride: use cairo_format_stride_for_width() if available
// but fall back to 4*width for the earlier versions as this is what that
// function always returns, even in latest Cairo, anyhow.
int stride;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 6, 0)
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 6, 0) )
{
stride = cairo_format_stride_for_width(format, width);
// All our code would totally break if stride were not a multiple of 4
// so ensure this is the case.
if ( stride % 4 )
{
wxFAIL_MSG("Unexpected Cairo image surface stride.");
stride += 4 - stride % 4;
}
}
else
#endif
stride = 4*width;
m_width = width;
m_height = height;
m_buffer = new unsigned char[height*stride];
return stride;
}
void wxCairoBitmapData::InitSurface(cairo_format_t format, int stride)
{
m_surface = cairo_image_surface_create_for_data(
m_buffer, format, m_width, m_height, stride);
m_pattern = cairo_pattern_create_for_surface(m_surface);
}
wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, cairo_surface_t* bitmap ) :
wxGraphicsBitmapData( renderer )
{
m_surface = bitmap;
m_pattern = cairo_pattern_create_for_surface(m_surface);
}
wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
{
wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
#ifdef wxHAS_RAW_BITMAP
// Create a surface object and copy the bitmap pixel data to it. if the
// image has alpha (or a mask represented as alpha) then we'll use a
// different format and iterator than if it doesn't...
cairo_format_t bufferFormat = bmp.GetDepth() == 32
#if defined(__WXGTK__) && !defined(__WXGTK3__)
|| bmp.GetMask()
#endif
? CAIRO_FORMAT_ARGB32
: CAIRO_FORMAT_RGB24;
int stride = InitBuffer(bmp.GetWidth(), bmp.GetHeight(), bufferFormat);
wxBitmap bmpSource = bmp; // we need a non-const instance
wxUint32* data = (wxUint32*)m_buffer;
if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
{
// use the bitmap's alpha
wxAlphaPixelData
pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
wxAlphaPixelData::Iterator p(pixData);
for (int y=0; y<m_height; y++)
{
wxAlphaPixelData::Iterator rowStart = p;
wxUint32* const rowStartDst = data;
for (int x=0; x<m_width; x++)
{
// Each pixel in CAIRO_FORMAT_ARGB32 is a 32-bit quantity,
// with alpha in the upper 8 bits, then red, then green, then
// blue. The 32-bit quantities are stored native-endian.
// Pre-multiplied alpha is used.
unsigned char alpha = p.Alpha();
if (alpha == 0)
*data = 0;
else
*data = ( alpha << 24
| (p.Red() * alpha/255) << 16
| (p.Green() * alpha/255) << 8
| (p.Blue() * alpha/255) );
++data;
++p;
}
data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
else // no alpha
{
wxNativePixelData
pixData(bmpSource, wxPoint(0, 0), wxSize(m_width, m_height));
wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
wxNativePixelData::Iterator p(pixData);
for (int y=0; y<m_height; y++)
{
wxNativePixelData::Iterator rowStart = p;
wxUint32* const rowStartDst = data;
for (int x=0; x<m_width; x++)
{
// Each pixel in CAIRO_FORMAT_RGB24 is a 32-bit quantity, with
// the upper 8 bits unused. Red, Green, and Blue are stored in
// the remaining 24 bits in that order. The 32-bit quantities
// are stored native-endian.
*data = ( p.Red() << 16 | p.Green() << 8 | p.Blue() );
++data;
++p;
}
data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
#if defined(__WXMSW__) || defined(__WXGTK3__)
// if there is a mask, set the alpha bytes in the target buffer to
// fully transparent or fully opaque
if (bmpSource.GetMask())
{
wxBitmap bmpMask = bmpSource.GetMask()->GetBitmap();
bufferFormat = CAIRO_FORMAT_ARGB32;
data = (wxUint32*)m_buffer;
wxNativePixelData
pixData(bmpMask, wxPoint(0, 0), wxSize(m_width, m_height));
wxCHECK_RET( pixData, wxT("Failed to gain raw access to mask data."));
wxNativePixelData::Iterator p(pixData);
for (int y=0; y<m_height; y++)
{
wxNativePixelData::Iterator rowStart = p;
wxUint32* const rowStartDst = data;
for (int x=0; x<m_width; x++)
{
if (p.Red()+p.Green()+p.Blue() == 0)
*data = 0;
else
*data = (wxALPHA_OPAQUE << 24) | (*data & 0x00FFFFFF);
++data;
++p;
}
data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
#endif
InitSurface(bufferFormat, stride);
#endif // wxHAS_RAW_BITMAP
}
#if wxUSE_IMAGE
// Helper functions for dealing with alpha pre-multiplication.
namespace
{
inline unsigned char Premultiply(unsigned char alpha, unsigned char data)
{
return alpha ? (data * alpha)/0xff : data;
}
inline unsigned char Unpremultiply(unsigned char alpha, unsigned char data)
{
return alpha ? (data * 0xff)/alpha : data;
}
} // anonymous namespace
wxCairoBitmapData::wxCairoBitmapData(wxGraphicsRenderer* renderer,
const wxImage& image)
: wxGraphicsBitmapData(renderer)
{
const cairo_format_t bufferFormat = image.HasAlpha()
? CAIRO_FORMAT_ARGB32
: CAIRO_FORMAT_RGB24;
int stride = InitBuffer(image.GetWidth(), image.GetHeight(), bufferFormat);
// Copy wxImage data into the buffer. Notice that we work with wxUint32
// values and not bytes becase Cairo always works with buffers in native
// endianness.
wxUint32* dst = reinterpret_cast<wxUint32*>(m_buffer);
const unsigned char* src = image.GetData();
if ( bufferFormat == CAIRO_FORMAT_ARGB32 )
{
const unsigned char* alpha = image.GetAlpha();
for ( int y = 0; y < m_height; y++ )
{
wxUint32* const rowStartDst = dst;
for ( int x = 0; x < m_width; x++ )
{
const unsigned char a = *alpha++;
*dst++ = a << 24 |
Premultiply(a, src[0]) << 16 |
Premultiply(a, src[1]) << 8 |
Premultiply(a, src[2]);
src += 3;
}
dst = rowStartDst + stride / 4;
}
}
else // RGB
{
for ( int y = 0; y < m_height; y++ )
{
wxUint32* const rowStartDst = dst;
for ( int x = 0; x < m_width; x++ )
{
*dst++ = src[0] << 16 |
src[1] << 8 |
src[2];
src += 3;
}
dst = rowStartDst + stride / 4;
}
}
InitSurface(bufferFormat, stride);
}
wxImage wxCairoBitmapData::ConvertToImage() const
{
wxImage image(m_width, m_height, false /* don't clear */);
// Get the surface type and format.
wxCHECK_MSG( cairo_surface_get_type(m_surface) == CAIRO_SURFACE_TYPE_IMAGE,
wxNullImage,
wxS("Can't convert non-image surface to image.") );
switch ( cairo_image_surface_get_format(m_surface) )
{
case CAIRO_FORMAT_ARGB32:
image.SetAlpha();
break;
case CAIRO_FORMAT_RGB24:
// Nothing to do, we don't use alpha by default.
break;
case CAIRO_FORMAT_A8:
case CAIRO_FORMAT_A1:
wxFAIL_MSG(wxS("Unsupported Cairo image surface type."));
return wxNullImage;
default:
wxFAIL_MSG(wxS("Unknown Cairo image surface type."));
return wxNullImage;
}
// Prepare for copying data.
const wxUint32* src = (wxUint32*)cairo_image_surface_get_data(m_surface);
wxCHECK_MSG( src, wxNullImage, wxS("Failed to get Cairo surface data.") );
int stride = cairo_image_surface_get_stride(m_surface);
wxCHECK_MSG( stride > 0, wxNullImage,
wxS("Failed to get Cairo surface stride.") );
// As we work with wxUint32 pointers and not char ones, we need to adjust
// the stride accordingly. This should be lossless as the stride must be a
// multiple of pixel size.
wxASSERT_MSG( !(stride % sizeof(wxUint32)), wxS("Unexpected stride.") );
stride /= sizeof(wxUint32);
unsigned char* dst = image.GetData();
unsigned char *alpha = image.GetAlpha();
if ( alpha )
{
// We need to also copy alpha and undo the pre-multiplication as Cairo
// stores pre-multiplied values in this format while wxImage does not.
for ( int y = 0; y < m_height; y++ )
{
const wxUint32* const rowStart = src;
for ( int x = 0; x < m_width; x++ )
{
const wxUint32 argb = *src++;
*alpha++ = (argb & 0xff000000) >> 24;
// Copy the RGB data undoing the pre-multiplication.
*dst++ = Unpremultiply(*alpha, (argb & 0x00ff0000) >> 16);
*dst++ = Unpremultiply(*alpha, (argb & 0x0000ff00) >> 8);
*dst++ = Unpremultiply(*alpha, (argb & 0x000000ff));
}
src = rowStart + stride;
}
}
else // RGB
{
// Things are pretty simple in this case, just copy RGB bytes.
for ( int y = 0; y < m_height; y++ )
{
const wxUint32* const rowStart = src;
for ( int x = 0; x < m_width; x++ )
{
const wxUint32 argb = *src++;
*dst++ = (argb & 0x00ff0000) >> 16;
*dst++ = (argb & 0x0000ff00) >> 8;
*dst++ = (argb & 0x000000ff);
}
src = rowStart + stride;
}
}
return image;
}
#endif // wxUSE_IMAGE
wxCairoBitmapData::~wxCairoBitmapData()
{
if (m_pattern)
cairo_pattern_destroy(m_pattern);
if (m_surface)
cairo_surface_destroy(m_surface);
delete [] m_buffer;
}
//-----------------------------------------------------------------------------
// wxCairoContext implementation
//-----------------------------------------------------------------------------
class wxCairoOffsetHelper
{
public :
wxCairoOffsetHelper( cairo_t* ctx , bool offset )
{
m_ctx = ctx;
m_offset = offset;
if ( m_offset )
cairo_translate( m_ctx, 0.5, 0.5 );
}
~wxCairoOffsetHelper( )
{
if ( m_offset )
cairo_translate( m_ctx, -0.5, -0.5 );
}
public :
cairo_t* m_ctx;
bool m_offset;
} ;
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc )
: wxGraphicsContext(renderer)
{
#ifdef __WXMSW__
// wxMSW contexts always use MM_ANISOTROPIC, which messes up
// text rendering when printing using Cairo. Switch it to MM_TEXT
// map mode to avoid this problem.
HDC hdc = (HDC)dc.GetHDC();
::SetMapMode(hdc, MM_TEXT);
m_mswSurface = cairo_win32_printing_surface_create(hdc);
Init( cairo_create(m_mswSurface) );
#endif
#ifdef __WXGTK20__
const wxDCImpl *impl = dc.GetImpl();
cairo_t* cr = static_cast<cairo_t*>(impl->GetCairoContext());
if (cr)
Init(cairo_reference(cr));
#endif
wxSize sz = dc.GetSize();
m_width = sz.x;
m_height = sz.y;
wxPoint org = dc.GetDeviceOrigin();
cairo_translate( m_context, org.x, org.y );
double sx,sy;
dc.GetUserScale( &sx, &sy );
// TODO: Determine if these fixes are needed on other platforms too.
// On MSW, without this the printer context will not respect wxDC SetMapMode calls.
// For example, using dc.SetMapMode(wxMM_POINTS) can let us share printer and screen
// drawing code
#ifdef __WXMSW__
double lsx,lsy;
dc.GetLogicalScale( &lsx, &lsy );
sx *= lsx;
sy *= lsy;
#endif
cairo_scale( m_context, sx, sy );
org = dc.GetLogicalOrigin();
cairo_translate( m_context, -org.x, -org.y );
}
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
: wxGraphicsContext(renderer)
{
int width, height;
dc.GetSize( &width, &height );
m_width = width;
m_height = height;
m_enableOffset = true;
#ifdef __WXMSW__
m_mswSurface = cairo_win32_surface_create((HDC)dc.GetHDC());
Init( cairo_create(m_mswSurface) );
#endif
#ifdef __WXGTK3__
cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
if (cr)
Init(cairo_reference(cr));
#elif defined __WXGTK20__
wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
#if 0
wxGraphicsMatrix matrix = CreateMatrix();
wxPoint org = dc.GetDeviceOrigin();
matrix.Translate( org.x, org.y );
org = dc.GetLogicalOrigin();
matrix.Translate( -org.x, -org.y );
double sx,sy;
dc.GetUserScale( &sx, &sy );
matrix.Scale( sx, sy );
ConcatTransform( matrix );
#endif
#endif
#ifdef __WXMAC__
CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
Init( cairo_create( surface ) );
cairo_surface_destroy( surface );
#endif
}
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc )
: wxGraphicsContext(renderer)
{
int width, height;
dc.GetSize( &width, &height );
m_width = width;
m_height = height;
m_enableOffset = true;
#ifdef __WXMSW__
HDC hdc = (HDC)dc.GetHDC();
HBITMAP bitmap = (HBITMAP)GetCurrentObject(hdc, OBJ_BITMAP);
BITMAP info;
bool hasBitmap = false;
// cairo_win32_surface_create creates a 24-bit bitmap,
// so if we have alpha, we need to create a 32-bit surface instead.
if (!GetObject(bitmap, sizeof(info), &info) || info.bmBitsPixel < 32)
m_mswSurface = cairo_win32_surface_create(hdc);
else {
hasBitmap = true;
m_mswSurface = cairo_image_surface_create_for_data((unsigned char*)info.bmBits,
CAIRO_FORMAT_ARGB32,
info.bmWidth,
info.bmHeight,
info.bmWidthBytes);
}
Init( cairo_create(m_mswSurface) );
// If we've created a image surface, we need to flip the Y axis so that
// all drawing will appear right side up.
if (hasBitmap) {
cairo_matrix_t matrix;
cairo_matrix_init(&matrix, 1.0, 0.0, 0.0, -1.0, 0.0, height);
cairo_set_matrix(m_context, &matrix);
}
#endif
#ifdef __WXGTK3__
cairo_t* cr = static_cast<cairo_t*>(dc.GetImpl()->GetCairoContext());
if (cr)
Init(cairo_reference(cr));
#elif defined __WXGTK20__
wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
#if 0
wxGraphicsMatrix matrix = CreateMatrix();
wxPoint org = dc.GetDeviceOrigin();
matrix.Translate( org.x, org.y );
org = dc.GetLogicalOrigin();
matrix.Translate( -org.x, -org.y );
double sx,sy;
dc.GetUserScale( &sx, &sy );
matrix.Scale( sx, sy );
ConcatTransform( matrix );
#endif
#endif
#ifdef __WXMAC__
CGContextRef cgcontext = (CGContextRef)dc.GetWindow()->MacGetCGContextRef();
cairo_surface_t* surface = cairo_quartz_surface_create_for_cg_context(cgcontext, width, height);
Init( cairo_create( surface ) );
cairo_surface_destroy( surface );
#endif
}
#ifdef __WXGTK20__
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
: wxGraphicsContext(renderer)
{
Init( gdk_cairo_create( window ) );
#ifdef __WXGTK3__
m_width = gdk_window_get_width(window);
m_height = gdk_window_get_height(window);
#else
int width, height;
gdk_drawable_get_size(window, &width, &height);
m_width = width;
m_height = height;
#endif
}
#endif
#ifdef __WXMSW__
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, HDC handle )
: wxGraphicsContext(renderer)
{
m_mswSurface = cairo_win32_surface_create(handle);
Init( cairo_create(m_mswSurface) );
m_width =
m_height = 0;
}
#endif
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
: wxGraphicsContext(renderer)
{
Init( context );
m_width =
m_height = 0;
}
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
: wxGraphicsContext(renderer)
#ifdef __WXMSW__
, m_mswWindowHDC(GetHwndOf(window))
#endif
{
m_enableOffset = true;
#ifdef __WXGTK__
// something along these lines (copied from dcclient)
// Some controls don't have m_wxwindow - like wxStaticBox, but the user
// code should still be able to create wxClientDCs for them, so we will
// use the parent window here then.
if (window->m_wxwindow == NULL)
{
window = window->GetParent();
}
wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
wxSize sz = window->GetSize();
m_width = sz.x;
m_height = sz.y;
#endif
#ifdef __WXMSW__
m_mswSurface = cairo_win32_surface_create((HDC)m_mswWindowHDC);
Init(cairo_create(m_mswSurface));
#endif
}
wxCairoContext::wxCairoContext(wxGraphicsRenderer* renderer) :
wxGraphicsContext(renderer)
{
m_context = NULL;
}
wxCairoContext::~wxCairoContext()
{
if ( m_context )
{
PopState();
PopState();
cairo_destroy(m_context);
}
#ifdef __WXMSW__
if ( m_mswSurface )
cairo_surface_destroy(m_mswSurface);
#endif
}
void wxCairoContext::Init(cairo_t *context)
{
m_context = context ;
PushState();
PushState();
}
void wxCairoContext::Clip( const wxRegion& region )
{
// Create a path with all the rectangles in the region
wxGraphicsPath path = GetRenderer()->CreatePath();
wxRegionIterator ri(region);
while (ri)
{
path.AddRectangle(ri.GetX(), ri.GetY(), ri.GetW(), ri.GetH());
++ri;
}
// Put it in the context
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
cairo_append_path(m_context, cp);
// clip to that path
cairo_clip(m_context);
path.UnGetNativePath(cp);
}
void wxCairoContext::Clip( wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
// Create a path with this rectangle
wxGraphicsPath path = GetRenderer()->CreatePath();
path.AddRectangle(x,y,w,h);
// Put it in the context
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
cairo_append_path(m_context, cp);
// clip to that path
cairo_clip(m_context);
path.UnGetNativePath(cp);
}
void wxCairoContext::ResetClip()
{
cairo_reset_clip(m_context);
}
void wxCairoContext::StrokePath( const wxGraphicsPath& path )
{
if ( !m_pen.IsNull() )
{
wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
cairo_append_path(m_context,cp);
((wxCairoPenData*)m_pen.GetRefData())->Apply(this);
cairo_stroke(m_context);
path.UnGetNativePath(cp);
}
}
void wxCairoContext::FillPath( const wxGraphicsPath& path , wxPolygonFillMode fillStyle )
{
if ( !m_brush.IsNull() )
{
wxCairoOffsetHelper helper( m_context, ShouldOffset() ) ;
cairo_path_t* cp = (cairo_path_t*) path.GetNativePath() ;
cairo_append_path(m_context,cp);
((wxCairoBrushData*)m_brush.GetRefData())->Apply(this);
cairo_set_fill_rule(m_context,fillStyle==wxODDEVEN_RULE ? CAIRO_FILL_RULE_EVEN_ODD : CAIRO_FILL_RULE_WINDING);
cairo_fill(m_context);
path.UnGetNativePath(cp);
}
}
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);
}
// concatenates this transform with the current transform of this context
void wxCairoContext::ConcatTransform( const wxGraphicsMatrix& matrix )
{
cairo_transform(m_context,(const cairo_matrix_t *) matrix.GetNativeMatrix());
}
// sets the transform of this context
void wxCairoContext::SetTransform( const wxGraphicsMatrix& matrix )
{
cairo_set_matrix(m_context,(const cairo_matrix_t*) matrix.GetNativeMatrix());
}
// gets the matrix of this context
wxGraphicsMatrix wxCairoContext::GetTransform() const
{
wxGraphicsMatrix matrix = CreateMatrix();
cairo_get_matrix(m_context,(cairo_matrix_t*) matrix.GetNativeMatrix());
return matrix;
}
void wxCairoContext::PushState()
{
cairo_save(m_context);
}
void wxCairoContext::PopState()
{
cairo_restore(m_context);
}
void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
wxGraphicsBitmap bitmap = GetRenderer()->CreateBitmap(bmp);
DrawBitmap(bitmap, x, y, w, h);
}
void wxCairoContext::DrawBitmap(const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
PushState();
// In case we're scaling the image by using a width and height different
// than the bitmap's size create a pattern transformation on the surface and
// draw the transformed pattern.
wxCairoBitmapData* data = static_cast<wxCairoBitmapData*>(bmp.GetRefData());
cairo_pattern_t* pattern = data->GetCairoPattern();
wxSize size = data->GetSize();
wxDouble scaleX = w / size.GetWidth();
wxDouble scaleY = h / size.GetHeight();
// prepare to draw the image
cairo_translate(m_context, x, y);
cairo_scale(m_context, scaleX, scaleY);
cairo_set_source(m_context, pattern);
// use the original size here since the context is scaled already...
cairo_rectangle(m_context, 0, 0, size.GetWidth(), size.GetHeight());
// fill the rectangle using the pattern
cairo_fill(m_context);
PopState();
}
void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
// An icon is a bitmap on wxGTK, so do this the easy way. When we want to
// start using the Cairo backend on other platforms then we may need to
// fiddle with this...
DrawBitmap(icon, x, y, w, h);
}
void wxCairoContext::DoDrawText(const wxString& str, wxDouble x, wxDouble y)
{
wxCHECK_RET( !m_font.IsNull(),
wxT("wxCairoContext::DrawText - no valid font set") );
if ( str.empty())
return;
const wxCharBuffer data = str.utf8_str();
if ( !data )
return;
if ( ((wxCairoFontData*)m_font.GetRefData())->Apply(this) )
{
#ifdef __WXGTK__
PangoLayout *layout = pango_cairo_create_layout (m_context);
const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
pango_layout_set_text(layout, data, data.length());
font.GTKSetPangoAttrs(layout);
cairo_move_to(m_context, x, y);
pango_cairo_show_layout (m_context, layout);
g_object_unref (layout);
// Don't use Cairo text API, we already did everything.
return;
#endif
}
// Cairo's x,y for drawing text is at the baseline, so we need to adjust
// the position we move to by the ascent.
cairo_font_extents_t fe;
cairo_font_extents(m_context, &fe);
cairo_move_to(m_context, x, y+fe.ascent);
cairo_show_text(m_context, data);
}
void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const
{
wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetTextExtent - no valid font set") );
if ( width )
*width = 0;
if ( height )
*height = 0;
if ( descent )
*descent = 0;
if ( externalLeading )
*externalLeading = 0;
if ( str.empty())
return;
if ( ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this) )
{
#ifdef __WXGTK__
int w, h;
PangoLayout *layout = pango_cairo_create_layout (m_context);
const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
const wxCharBuffer data = str.utf8_str();
if ( !data )
{
return;
}
pango_layout_set_text(layout, data, data.length());
pango_layout_get_pixel_size (layout, &w, &h);
if ( width )
*width = w;
if ( height )
*height = h;
if (descent)
{
PangoLayoutIter *iter = pango_layout_get_iter(layout);
int baseline = pango_layout_iter_get_baseline(iter);
pango_layout_iter_free(iter);
*descent = h - PANGO_PIXELS(baseline);
}
g_object_unref (layout);
return;
#endif
}
if (width)
{
const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
cairo_text_extents_t te;
cairo_text_extents(m_context, buf, &te);
*width = te.width;
}
if (height || descent || externalLeading)
{
cairo_font_extents_t fe;
cairo_font_extents(m_context, &fe);
// some backends have negative descents
if ( fe.descent < 0 )
fe.descent = -fe.descent;
if ( fe.height < (fe.ascent + fe.descent ) )
{
// some backends are broken re height ... (eg currently ATSUI)
fe.height = fe.ascent + fe.descent;
}
if (height)
*height = fe.height;
if ( descent )
*descent = fe.descent;
if ( externalLeading )
*externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
}
}
void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
{
widths.Empty();
wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
#ifdef __WXGTK__
const wxCharBuffer data = text.utf8_str();
int w = 0;
if (data.length())
{
PangoLayout* layout = pango_cairo_create_layout(m_context);
const wxFont& font = static_cast<wxCairoFontData*>(m_font.GetRefData())->GetFont();
pango_layout_set_font_description(layout, font.GetNativeFontInfo()->description);
pango_layout_set_text(layout, data, data.length());
PangoLayoutIter* iter = pango_layout_get_iter(layout);
PangoRectangle rect;
do {
pango_layout_iter_get_cluster_extents(iter, NULL, &rect);
w += rect.width;
widths.Add(PANGO_PIXELS(w));
} while (pango_layout_iter_next_cluster(iter));
pango_layout_iter_free(iter);
g_object_unref(layout);
}
size_t i = widths.GetCount();
const size_t len = text.length();
while (i++ < len)
widths.Add(PANGO_PIXELS(w));
#else
// TODO
#endif
}
void * wxCairoContext::GetNativeContext()
{
return m_context;
}
bool wxCairoContext::SetAntialiasMode(wxAntialiasMode antialias)
{
if (m_antialias == antialias)
return true;
m_antialias = antialias;
cairo_antialias_t antialiasMode;
switch (antialias)
{
case wxANTIALIAS_DEFAULT:
antialiasMode = CAIRO_ANTIALIAS_DEFAULT;
break;
case wxANTIALIAS_NONE:
antialiasMode = CAIRO_ANTIALIAS_NONE;
break;
default:
return false;
}
cairo_set_antialias(m_context, antialiasMode);
return true;
}
bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
{
// placeholder
return false;
}
bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
{
if ( m_composition == op )
return true;
m_composition = op;
cairo_operator_t cop;
switch (op)
{
case wxCOMPOSITION_CLEAR:
cop = CAIRO_OPERATOR_CLEAR;
break;
case wxCOMPOSITION_SOURCE:
cop = CAIRO_OPERATOR_SOURCE;
break;
case wxCOMPOSITION_OVER:
cop = CAIRO_OPERATOR_OVER;
break;
case wxCOMPOSITION_IN:
cop = CAIRO_OPERATOR_IN;
break;
case wxCOMPOSITION_OUT:
cop = CAIRO_OPERATOR_OUT;
break;
case wxCOMPOSITION_ATOP:
cop = CAIRO_OPERATOR_ATOP;
break;
case wxCOMPOSITION_DEST:
cop = CAIRO_OPERATOR_DEST;
break;
case wxCOMPOSITION_DEST_OVER:
cop = CAIRO_OPERATOR_DEST_OVER;
break;
case wxCOMPOSITION_DEST_IN:
cop = CAIRO_OPERATOR_DEST_IN;
break;
case wxCOMPOSITION_DEST_OUT:
cop = CAIRO_OPERATOR_DEST_OUT;
break;
case wxCOMPOSITION_DEST_ATOP:
cop = CAIRO_OPERATOR_DEST_ATOP;
break;
case wxCOMPOSITION_XOR:
cop = CAIRO_OPERATOR_XOR;
break;
case wxCOMPOSITION_ADD:
cop = CAIRO_OPERATOR_ADD;
break;
default:
return false;
}
cairo_set_operator(m_context, cop);
return true;
}
void wxCairoContext::BeginLayer(wxDouble opacity)
{
m_layerOpacities.push_back(opacity);
cairo_push_group(m_context);
}
void wxCairoContext::EndLayer()
{
float opacity = m_layerOpacities.back();
m_layerOpacities.pop_back();
cairo_pop_group_to_source(m_context);
cairo_paint_with_alpha(m_context,opacity);
}
//-----------------------------------------------------------------------------
// wxCairoRenderer declaration
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxCairoRenderer : public wxGraphicsRenderer
{
public :
wxCairoRenderer() {}
virtual ~wxCairoRenderer() {}
// Context
virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
virtual wxGraphicsContext * CreateContext( const wxPrinterDC& dc);
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
virtual wxGraphicsContext * CreateContextFromNativeWindow( void * window );
#if wxUSE_IMAGE
virtual wxGraphicsContext * CreateContextFromImage(wxImage& image);
#endif // wxUSE_IMAGE
virtual wxGraphicsContext * CreateContext( wxWindow* window );
virtual wxGraphicsContext * CreateMeasuringContext();
#ifdef __WXMSW__
#if wxUSE_ENH_METAFILE
virtual wxGraphicsContext * CreateContext( const wxEnhMetaFileDC& dc);
#endif
#endif
// Path
virtual wxGraphicsPath CreatePath();
// Matrix
virtual wxGraphicsMatrix CreateMatrix( wxDouble a=1.0, wxDouble b=0.0, wxDouble c=0.0, wxDouble d=1.0,
wxDouble tx=0.0, wxDouble ty=0.0);
virtual wxGraphicsPen CreatePen(const wxPen& pen) ;
virtual wxGraphicsBrush CreateBrush(const wxBrush& brush ) ;
virtual wxGraphicsBrush
CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
wxDouble x2, wxDouble y2,
const wxGraphicsGradientStops& stops);
virtual wxGraphicsBrush
CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
wxDouble xc, wxDouble yc,
wxDouble radius,
const wxGraphicsGradientStops& stops);
// sets the font
virtual wxGraphicsFont CreateFont( const wxFont &font , const wxColour &col = *wxBLACK ) ;
virtual wxGraphicsFont CreateFont(double sizeInPixels,
const wxString& facename,
int flags = wxFONTFLAG_DEFAULT,
const wxColour& col = *wxBLACK);
// create a native bitmap representation
virtual wxGraphicsBitmap CreateBitmap( const wxBitmap &bitmap );
#if wxUSE_IMAGE
virtual wxGraphicsBitmap CreateBitmapFromImage(const wxImage& image);
virtual wxImage CreateImageFromBitmap(const wxGraphicsBitmap& bmp);
#endif // wxUSE_IMAGE
// create a graphics bitmap from a native bitmap
virtual wxGraphicsBitmap CreateBitmapFromNativeBitmap( void* bitmap );
// create a subimage from a native image representation
virtual wxGraphicsBitmap CreateSubBitmap( const wxGraphicsBitmap &bitmap, wxDouble x, wxDouble y, wxDouble w, wxDouble h );
DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
} ;
//-----------------------------------------------------------------------------
// wxCairoRenderer implementation
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
static wxCairoRenderer gs_cairoGraphicsRenderer;
#ifdef __WXGTK__
#define ENSURE_LOADED_OR_RETURN(returnOnFail)
#else
#define ENSURE_LOADED_OR_RETURN(returnOnFail) \
if (!wxCairoInit()) \
return returnOnFail
#endif
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxWindowDC& dc)
{
ENSURE_LOADED_OR_RETURN(NULL);
return new wxCairoContext(this,dc);
}
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
{
ENSURE_LOADED_OR_RETURN(NULL);
return new wxCairoContext(this,dc);
}
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxPrinterDC& dc)
{
ENSURE_LOADED_OR_RETURN(NULL);
return new wxCairoContext(this, dc);
}
#ifdef __WXMSW__
#if wxUSE_ENH_METAFILE
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& WXUNUSED(dc) )
{
return NULL;
}
#endif
#endif
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
{
ENSURE_LOADED_OR_RETURN(NULL);
#ifdef __WXMSW__
return new wxCairoContext(this,(HDC)context);
#else
return new wxCairoContext(this,(cairo_t*)context);
#endif
}
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
{
#ifdef __WXGTK__
return new wxCairoContext(this, static_cast<GdkWindow*>(window));
#else
wxUnusedVar(window);
return NULL;
#endif
}
#if wxUSE_IMAGE
wxGraphicsContext * wxCairoRenderer::CreateContextFromImage(wxImage& image)
{
ENSURE_LOADED_OR_RETURN(NULL);
return new wxCairoImageContext(this, image);
}
#endif // wxUSE_IMAGE
wxGraphicsContext * wxCairoRenderer::CreateMeasuringContext()
{
#ifdef __WXGTK__
return CreateContextFromNativeWindow(gdk_get_default_root_window());
#else
return NULL;
// TODO
#endif
}
wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
{
ENSURE_LOADED_OR_RETURN(NULL);
return new wxCairoContext(this, window );
}
// Path
wxGraphicsPath wxCairoRenderer::CreatePath()
{
wxGraphicsPath path;
ENSURE_LOADED_OR_RETURN(path);
path.SetRefData( new wxCairoPathData(this) );
return path;
}
// Matrix
wxGraphicsMatrix wxCairoRenderer::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d,
wxDouble tx, wxDouble ty)
{
wxGraphicsMatrix m;
ENSURE_LOADED_OR_RETURN(m);
wxCairoMatrixData* data = new wxCairoMatrixData( this );
data->Set( a,b,c,d,tx,ty ) ;
m.SetRefData(data);
return m;
}
wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
{
wxGraphicsPen p;
ENSURE_LOADED_OR_RETURN(p);
if (pen.IsOk() && pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
{
p.SetRefData(new wxCairoPenData( this, pen ));
}
return p;
}
wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
{
wxGraphicsBrush p;
ENSURE_LOADED_OR_RETURN(p);
if (brush.IsOk() && brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
{
p.SetRefData(new wxCairoBrushData( this, brush ));
}
return p;
}
wxGraphicsBrush
wxCairoRenderer::CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
wxDouble x2, wxDouble y2,
const wxGraphicsGradientStops& stops)
{
wxGraphicsBrush p;
ENSURE_LOADED_OR_RETURN(p);
wxCairoBrushData* d = new wxCairoBrushData( this );
d->CreateLinearGradientBrush(x1, y1, x2, y2, stops);
p.SetRefData(d);
return p;
}
wxGraphicsBrush
wxCairoRenderer::CreateRadialGradientBrush(wxDouble xo, wxDouble yo,
wxDouble xc, wxDouble yc, wxDouble r,
const wxGraphicsGradientStops& stops)
{
wxGraphicsBrush p;
ENSURE_LOADED_OR_RETURN(p);
wxCairoBrushData* d = new wxCairoBrushData( this );
d->CreateRadialGradientBrush(xo, yo, xc, yc, r, stops);
p.SetRefData(d);
return p;
}
wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
{
wxGraphicsFont p;
ENSURE_LOADED_OR_RETURN(p);
if ( font.IsOk() )
{
p.SetRefData(new wxCairoFontData( this , font, col ));
}
return p;
}
wxGraphicsFont
wxCairoRenderer::CreateFont(double sizeInPixels,
const wxString& facename,
int flags,
const wxColour& col)
{
wxGraphicsFont font;
ENSURE_LOADED_OR_RETURN(font);
font.SetRefData(new wxCairoFontData(this, sizeInPixels, facename, flags, col));
return font;
}
wxGraphicsBitmap wxCairoRenderer::CreateBitmap( const wxBitmap& bmp )
{
wxGraphicsBitmap p;
ENSURE_LOADED_OR_RETURN(p);
if ( bmp.IsOk() )
{
p.SetRefData(new wxCairoBitmapData( this , bmp ));
}
return p;
}
#if wxUSE_IMAGE
wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromImage(const wxImage& image)
{
wxGraphicsBitmap bmp;
ENSURE_LOADED_OR_RETURN(bmp);
if ( image.IsOk() )
{
bmp.SetRefData(new wxCairoBitmapData(this, image));
}
return bmp;
}
wxImage wxCairoRenderer::CreateImageFromBitmap(const wxGraphicsBitmap& bmp)
{
wxImage image;
ENSURE_LOADED_OR_RETURN(image);
const wxCairoBitmapData* const
data = static_cast<wxCairoBitmapData*>(bmp.GetGraphicsData());
if (data)
image = data->ConvertToImage();
return image;
}
#endif // wxUSE_IMAGE
wxGraphicsBitmap wxCairoRenderer::CreateBitmapFromNativeBitmap( void* bitmap )
{
wxGraphicsBitmap p;
ENSURE_LOADED_OR_RETURN(p);
if ( bitmap != NULL )
{
p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
}
return p;
}
wxGraphicsBitmap
wxCairoRenderer::CreateSubBitmap(const wxGraphicsBitmap& WXUNUSED(bitmap),
wxDouble WXUNUSED(x),
wxDouble WXUNUSED(y),
wxDouble WXUNUSED(w),
wxDouble WXUNUSED(h))
{
wxGraphicsBitmap p;
wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
return p;
}
wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
{
return &gs_cairoGraphicsRenderer;
}
#else // !wxUSE_CAIRO
wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
{
return NULL;
}
#endif // wxUSE_CAIRO/!wxUSE_CAIRO
// MSW and OS X have their own native default renderers, but the other ports
// use Cairo by default
#if !(defined(__WXMSW__) || defined(__WXOSX__))
wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
{
return GetCairoRenderer();
}
#endif // !(__WXMSW__ || __WXOSX__)
#endif // wxUSE_GRAPHICS_CONTEXT
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