// Author: Stefan Csomor
// Modified by:
// Created: 2006-10-03
-// RCS-ID: $Id$
// Copyright: (c) 2006 Stefan Csomor
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if wxUSE_CAIRO
-#include "wx/cairo.h"
+// 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/dcclient.h"
#include "wx/dcmemory.h"
#include "wx/dcprint.h"
- #ifdef __WXGTK__
- #include "wx/window.h"
- #endif
+ #include "wx/window.h"
#endif
#include "wx/private/graphics.h"
#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
-
-#ifdef __WXMSW__
-#include <cairo-win32.h>
#endif
#ifdef __WXMAC__
cairo_matrix_t m_matrix ;
} ;
-class WXDLLIMPEXP_CORE wxCairoPenData : public wxGraphicsObjectRefData
+// 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 );
private :
double m_width;
- double m_red;
- double m_green;
- double m_blue;
- double m_alpha;
-
cairo_line_cap_t m_cap;
cairo_line_join_t m_join;
const double *m_lengths;
double *m_userLengths;
- wxPen m_pen;
-
wxDECLARE_NO_COPY_CLASS(wxCairoPenData);
};
-class WXDLLIMPEXP_CORE wxCairoBrushData : public wxGraphicsObjectRefData
+class WXDLLIMPEXP_CORE wxCairoBrushData : public wxCairoPenBrushBaseData
{
public:
wxCairoBrushData( wxGraphicsRenderer* renderer );
wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush );
- ~wxCairoBrushData ();
-
- virtual void Apply( wxGraphicsContext* context );
void CreateLinearGradientBrush(wxDouble x1, wxDouble y1,
wxDouble x2, wxDouble y2,
// common part of Create{Linear,Radial}GradientBrush()
void AddGradientStops(const wxGraphicsGradientStops& stops);
-
-private :
- double m_red;
- double m_green;
- double m_blue;
- double m_alpha;
-
- cairo_pattern_t* m_brushPattern;
};
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 void Apply( wxGraphicsContext* context );
+ virtual bool Apply( wxGraphicsContext* context );
#ifdef __WXGTK__
- const PangoFontDescription* GetFont() const { return m_font; }
- bool GetUnderlined() const { return m_underlined; }
+ 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;
- bool m_underlined;
double m_red;
double m_green;
double m_blue;
#ifdef __WXMAC__
cairo_font_face_t *m_font;
#elif defined(__WXGTK__)
- PangoFontDescription* m_font;
-#else
+ 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;
-#endif
};
-class wxCairoBitmapData : public wxGraphicsObjectRefData
+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;
wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
wxCairoContext( wxGraphicsRenderer* renderer, const wxPrinterDC& dc );
#ifdef __WXGTK__
- wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
+ 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);
- wxCairoContext();
+
+ // If this ctor is used, Init() must be called by the derived class later.
+ wxCairoContext( wxGraphicsRenderer* renderer );
+
virtual ~wxCairoContext();
virtual bool ShouldOffset() const
virtual void Clip( const wxRegion ®ion );
#ifdef __WXMSW__
cairo_surface_t* m_mswSurface;
+ WindowHDC m_mswWindowHDC;
#endif
// clips drawings to the rect
virtual bool SetAntialiasMode(wxAntialiasMode antialias);
+ virtual bool SetInterpolationQuality(wxInterpolationQuality interpolation);
+
virtual bool SetCompositionMode(wxCompositionMode op);
virtual void BeginLayer(wxDouble opacity);
protected:
virtual void DoDrawText( const wxString &str, wxDouble x, wxDouble y );
-private:
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( wxGraphicsRenderer* renderer, const wxPen &pen )
-: wxGraphicsObjectRefData(renderer)
+ : wxCairoPenBrushBaseData(renderer, pen.GetColour(), pen.IsTransparent())
{
Init();
- m_pen = pen;
- m_width = m_pen.GetWidth();
+ m_width = pen.GetWidth();
if (m_width <= 0.0)
m_width = 0.1;
- m_red = m_pen.GetColour().Red()/255.0;
- m_green = m_pen.GetColour().Green()/255.0;
- m_blue = m_pen.GetColour().Blue()/255.0;
- m_alpha = m_pen.GetColour().Alpha()/255.0;
-
- switch ( m_pen.GetCap() )
+ switch ( pen.GetCap() )
{
case wxCAP_ROUND :
m_cap = CAIRO_LINE_CAP_ROUND;
break;
}
- switch ( m_pen.GetJoin() )
+ switch ( pen.GetJoin() )
{
case wxJOIN_BEVEL :
m_join = CAIRO_LINE_JOIN_BEVEL;
9.0 , 6.0 , 3.0 , 3.0
};
- switch ( m_pen.GetStyle() )
+ switch ( pen.GetStyle() )
{
case wxPENSTYLE_SOLID :
break;
case wxPENSTYLE_USER_DASH :
{
wxDash *wxdashes ;
- m_count = m_pen.GetDashes( &wxdashes ) ;
+ m_count = pen.GetDashes( &wxdashes ) ;
if ((wxdashes != NULL) && (m_count > 0))
{
m_userLengths = new double[m_count] ;
m_lengths = m_userLengths ;
}
break;
+
case wxPENSTYLE_STIPPLE :
- {
- /*
- wxBitmap* bmp = pen.GetStipple();
- if ( bmp && bmp->IsOk() )
- {
- 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 );
- }
- */
- }
+ case wxPENSTYLE_STIPPLE_MASK :
+ case wxPENSTYLE_STIPPLE_MASK_OPAQUE :
+ InitStipple(pen.GetStipple());
break;
+
default :
- if ( m_pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
- && m_pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
+ if ( pen.GetStyle() >= wxPENSTYLE_FIRST_HATCH
+ && pen.GetStyle() <= wxPENSTYLE_LAST_HATCH )
{
- /*
- wxDELETE( m_penBrush );
- HatchStyle style = HatchStyleHorizontal;
- switch( pen.GetStyle() )
- {
- case wxPENSTYLE_BDIAGONAL_HATCH :
- style = HatchStyleBackwardDiagonal;
- break ;
- case wxPENSTYLE_CROSSDIAG_HATCH :
- style = HatchStyleDiagonalCross;
- break ;
- case wxPENSTYLE_FDIAGONAL_HATCH :
- style = HatchStyleForwardDiagonal;
- break ;
- case wxPENSTYLE_CROSS_HATCH :
- style = HatchStyleCross;
- break ;
- case wxPENSTYLE_HORIZONTAL_HATCH :
- style = HatchStyleHorizontal;
- break ;
- case wxPENSTYLE_VERTICAL_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 )
- */
+ 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_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
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::wxCairoBrushData( wxGraphicsRenderer* renderer )
- : wxGraphicsObjectRefData( renderer )
+ : wxCairoPenBrushBaseData(renderer, wxColour(), true /* transparent */)
{
Init();
}
-wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer, const wxBrush &brush )
- : wxGraphicsObjectRefData(renderer)
+wxCairoBrushData::wxCairoBrushData( wxGraphicsRenderer* renderer,
+ const wxBrush &brush )
+ : wxCairoPenBrushBaseData(renderer, brush.GetColour(), brush.IsTransparent())
{
Init();
- m_red = brush.GetColour().Red()/255.0;
- m_green = brush.GetColour().Green()/255.0;
- m_blue = brush.GetColour().Blue()/255.0;
- m_alpha = brush.GetColour().Alpha()/255.0;
- /*
- if ( brush.GetStyle() == wxBRUSHSTYLE_SOLID)
+ switch ( brush.GetStyle() )
{
- 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 wxBRUSHSTYLE_BDIAGONAL_HATCH :
- style = HatchStyleBackwardDiagonal;
- break ;
- case wxBRUSHSTYLE_CROSSDIAG_HATCH :
- style = HatchStyleDiagonalCross;
- break ;
- case wxBRUSHSTYLE_FDIAGONAL_HATCH :
- style = HatchStyleForwardDiagonal;
- break ;
- case wxBRUSHSTYLE_CROSS_HATCH :
- style = HatchStyleCross;
- break ;
- case wxBRUSHSTYLE_HORIZONTAL_HATCH :
- style = HatchStyleHorizontal;
- break ;
- case wxBRUSHSTYLE_VERTICAL_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->IsOk() )
- {
- wxDELETE( m_brushImage );
- m_brushImage = Bitmap::FromHBITMAP((HBITMAP)bmp->GetHBITMAP(),(HPALETTE)bmp->GetPalette()->GetHPALETTE());
- m_brush = new TextureBrush(m_brushImage);
- }
- }
- */
-}
-
-wxCairoBrushData::~wxCairoBrushData ()
-{
- if (m_brushPattern)
- cairo_pattern_destroy(m_brushPattern);
-}
+ case wxBRUSHSTYLE_STIPPLE:
+ case wxBRUSHSTYLE_STIPPLE_MASK:
+ case wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE:
+ InitStipple(brush.GetStipple());
+ break;
-void wxCairoBrushData::Apply( wxGraphicsContext* context )
-{
- cairo_t * ctext = (cairo_t*) context->GetNativeContext();
- if ( m_brushPattern )
- {
- cairo_set_source(ctext,m_brushPattern);
- }
- else
- {
- cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
+ default:
+ if ( brush.IsHatch() )
+ InitHatch(static_cast<wxHatchStyle>(brush.GetStyle()));
+ break;
}
}
cairo_pattern_add_color_stop_rgba
(
- m_brushPattern,
+ m_pattern,
stop.GetPosition(),
col.Red()/255.0,
col.Green()/255.0,
);
}
- wxASSERT_MSG(cairo_pattern_status(m_brushPattern) == CAIRO_STATUS_SUCCESS,
+ wxASSERT_MSG(cairo_pattern_status(m_pattern) == CAIRO_STATUS_SUCCESS,
wxT("Couldn't create cairo pattern"));
}
wxDouble x2, wxDouble y2,
const wxGraphicsGradientStops& stops)
{
- m_brushPattern = cairo_pattern_create_linear(x1,y1,x2,y2);
+ m_pattern = cairo_pattern_create_linear(x1,y1,x2,y2);
AddGradientStops(stops);
}
wxDouble radius,
const wxGraphicsGradientStops& stops)
{
- m_brushPattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
+ m_pattern = cairo_pattern_create_radial(xo,yo,0.0,xc,yc,radius);
AddGradientStops(stops);
}
void wxCairoBrushData::Init()
{
- m_brushPattern = NULL;
+ m_pattern = NULL;
+ m_bmpdata = NULL;
}
//-----------------------------------------------------------------------------
// wxCairoFontData implementation
//-----------------------------------------------------------------------------
-wxCairoFontData::wxCairoFontData( wxGraphicsRenderer* renderer, const wxFont &font,
- const wxColour& col ) : wxGraphicsObjectRefData(renderer)
+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();
- m_underlined = font.GetUnderlined();
#ifdef __WXMAC__
m_font = cairo_quartz_font_face_create_for_cgfont( font.OSXGetCGFont() );
#elif defined(__WXGTK__)
- m_font = pango_font_description_copy( font.GetNativeFontInfo()->description );
#else
- m_fontName = font.GetFaceName().mb_str(wxConvUTF8);
- m_slant = font.GetStyle() == wxFONTSTYLE_ITALIC ? CAIRO_FONT_SLANT_ITALIC:CAIRO_FONT_SLANT_NORMAL;
- m_weight = font.GetWeight() == wxFONTWEIGHT_BOLD ? CAIRO_FONT_WEIGHT_BOLD:CAIRO_FONT_WEIGHT_NORMAL;
+ 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__
- cairo_font_face_destroy( m_font );
-#elif defined(__WXGTK__)
- pango_font_description_free( m_font );
-#else
+ if ( m_font )
+ cairo_font_face_destroy( m_font );
#endif
}
-void wxCairoFontData::Apply( wxGraphicsContext* context )
+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__
- // the rest is done using Pango layouts
+ if (m_wxfont.IsOk())
+ {
+ // Nothing to do, the caller uses Pango layout functions to do
+ // everything.
+ return true;
+ }
#elif defined(__WXMAC__)
- cairo_set_font_face(ctext, m_font);
- cairo_set_font_size(ctext, m_size );
-#else
+ 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 );
-#endif
+
+ // Indicate that we don't use native fonts for the platforms which care
+ // about this (currently only wxGTK).
+ return false;
}
//-----------------------------------------------------------------------------
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 ) :
- wxGraphicsObjectRefData( renderer )
+ wxGraphicsBitmapData( renderer )
{
m_surface = bitmap;
m_pattern = cairo_pattern_create_for_surface(m_surface);
}
-wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsObjectRefData( renderer )
+wxCairoBitmapData::wxCairoBitmapData( wxGraphicsRenderer* renderer, const wxBitmap& bmp ) : wxGraphicsBitmapData( renderer )
{
wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
#ifdef wxHAS_RAW_BITMAP
- int bw = m_width = bmp.GetWidth();
- int bh = m_height = bmp.GetHeight();
- wxBitmap bmpSource = bmp; // we need a non-const instance
- m_buffer = new unsigned char[bw*bh*4];
- wxUint32* data = (wxUint32*)m_buffer;
-
// 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...
- if (bmpSource.HasAlpha() || bmpSource.GetMask())
+ 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 )
{
- m_surface = cairo_image_surface_create_for_data(
- m_buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
- wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ // 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<bh; y++)
+ for (int y=0; y<m_height; y++)
{
wxAlphaPixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
+ 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
++data;
++p;
}
+
+ data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
else // no alpha
{
- m_surface = cairo_image_surface_create_for_data(
- m_buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
- wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ 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<bh; y++)
+ for (int y=0; y<m_height; y++)
{
wxNativePixelData::Iterator rowStart = p;
- for (int x=0; x<bw; x++)
+ 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
++data;
++p;
}
+
+ data = rowStartDst + stride / 4;
p = rowStart;
p.OffsetY(pixData, 1);
}
}
- m_pattern = cairo_pattern_create_for_surface(m_surface);
+#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)
delete [] m_buffer;
}
-
-
//-----------------------------------------------------------------------------
// wxCairoContext implementation
//-----------------------------------------------------------------------------
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();
- Init( (cairo_t*) impl->GetCairoContext() );
-
+ 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;
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 );
-#endif
}
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc )
m_enableOffset = true;
-#ifdef __WXGTK20__
+#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() ) );
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 __WXGTK20__
+#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() ) );
}
#ifdef __WXGTK20__
-wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
+wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkWindow *window )
: wxGraphicsContext(renderer)
{
- Init( gdk_cairo_create( drawable ) );
+ 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( drawable, &width, &height );
+ gdk_drawable_get_size(window, &width, &height);
m_width = width;
m_height = height;
+#endif
}
#endif
}
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
-: wxGraphicsContext(renderer)
+ : wxGraphicsContext(renderer)
+#ifdef __WXMSW__
+ , m_mswWindowHDC(GetHwndOf(window))
+#endif
{
m_enableOffset = true;
#ifdef __WXGTK__
#endif
#ifdef __WXMSW__
- m_mswSurface = cairo_win32_surface_create((HDC)window->GetHandle());
+ 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 )
if ( !data )
return;
- ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
-
+ if ( ((wxCairoFontData*)m_font.GetRefData())->Apply(this) )
+ {
#ifdef __WXGTK__
- size_t datalen = strlen(data);
+ 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);
- PangoLayout *layout = pango_cairo_create_layout (m_context);
- wxCairoFontData* font_data = (wxCairoFontData*) m_font.GetRefData();
- pango_layout_set_font_description( layout, font_data->GetFont());
- pango_layout_set_text(layout, data, datalen);
+ cairo_move_to(m_context, x, y);
+ pango_cairo_show_layout (m_context, layout);
- if (font_data->GetUnderlined())
- {
- PangoAttrList *attrs = pango_attr_list_new();
- PangoAttribute *attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
- pango_attr_list_insert(attrs, attr);
- pango_layout_set_attributes(layout, attrs);
- pango_attr_list_unref(attrs);
- }
+ g_object_unref (layout);
- cairo_move_to(m_context, x, y);
- pango_cairo_show_layout (m_context, layout);
+ // Don't use Cairo text API, we already did everything.
+ return;
+#endif
+ }
- g_object_unref (layout);
-#else
// 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_move_to(m_context, x, y+fe.ascent);
cairo_show_text(m_context, data);
-#endif
}
void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
if ( str.empty())
return;
+ if ( ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this) )
+ {
#ifdef __WXGTK__
- int w, h;
+ int w, h;
- PangoLayout *layout = pango_cairo_create_layout (m_context);
- pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
- const wxCharBuffer data = str.utf8_str();
- if ( !data )
- {
+ 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
}
- pango_layout_set_text( layout, data, strlen(data) );
- 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);
-#else
- ((wxCairoFontData*)m_font.GetRefData())->Apply((wxCairoContext*)this);
if (width)
{
if ( externalLeading )
*externalLeading = wxMax(0, fe.height - (fe.ascent + fe.descent));
}
-#endif
}
void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
{
widths.Empty();
- widths.Add(0, text.length());
-
wxCHECK_RET( !m_font.IsNull(), wxT("wxCairoContext::GetPartialTextExtents - no valid font set") );
-
- if (text.empty())
- return;
-
+#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 true;
}
+bool wxCairoContext::SetInterpolationQuality(wxInterpolationQuality WXUNUSED(interpolation))
+{
+ // placeholder
+ return false;
+}
+
bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
{
if ( m_composition == op )
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 );
// 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 );
-private :
DECLARE_DYNAMIC_CLASS_NO_COPY(wxCairoRenderer)
} ;
IMPLEMENT_DYNAMIC_CLASS(wxCairoRenderer,wxGraphicsRenderer)
static wxCairoRenderer gs_cairoGraphicsRenderer;
-// temporary hack to allow creating a cairo context on any platform
-extern wxGraphicsRenderer* gCairoRenderer;
-wxGraphicsRenderer* gCairoRenderer = &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)
{
-#ifdef __WXGTK20__
- const wxDCImpl *impl = dc.GetImpl();
- cairo_t* context = (cairo_t*) impl->GetCairoContext();
- if (context)
- return new wxCairoContext(this,dc);
- else
-#endif
- return NULL;
+ ENSURE_LOADED_OR_RETURN(NULL);
+ return new wxCairoContext(this, dc);
}
#ifdef __WXMSW__
#if wxUSE_ENH_METAFILE
-wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& dc)
+wxGraphicsContext * wxCairoRenderer::CreateContext( const wxEnhMetaFileDC& WXUNUSED(dc) )
{
return NULL;
}
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
{
+ ENSURE_LOADED_OR_RETURN(NULL);
#ifdef __WXMSW__
return new wxCairoContext(this,(HDC)context);
#else
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeWindow( void * window )
{
#ifdef __WXGTK__
- return new wxCairoContext(this,(GdkDrawable*)window);
+ 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());
-#endif
+#else
return NULL;
// TODO
+#endif
}
wxGraphicsContext * wxCairoRenderer::CreateContext( wxWindow* window )
{
+ ENSURE_LOADED_OR_RETURN(NULL);
return new wxCairoContext(this, window );
}
wxGraphicsPath wxCairoRenderer::CreatePath()
{
wxGraphicsPath path;
+ ENSURE_LOADED_OR_RETURN(path);
path.SetRefData( new wxCairoPathData(this) );
return path;
}
{
wxGraphicsMatrix m;
+ ENSURE_LOADED_OR_RETURN(m);
wxCairoMatrixData* data = new wxCairoMatrixData( this );
data->Set( a,b,c,d,tx,ty ) ;
m.SetRefData(data);
wxGraphicsPen wxCairoRenderer::CreatePen(const wxPen& pen)
{
- if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT )
- return wxNullGraphicsPen;
- else
+ wxGraphicsPen p;
+ ENSURE_LOADED_OR_RETURN(p);
+ if (pen.IsOk() && pen.GetStyle() != wxPENSTYLE_TRANSPARENT)
{
- wxGraphicsPen p;
p.SetRefData(new wxCairoPenData( this, pen ));
- return p;
}
+ return p;
}
wxGraphicsBrush wxCairoRenderer::CreateBrush(const wxBrush& brush )
{
- if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT )
- return wxNullGraphicsBrush;
- else
+ wxGraphicsBrush p;
+ ENSURE_LOADED_OR_RETURN(p);
+ if (brush.IsOk() && brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT)
{
- wxGraphicsBrush p;
p.SetRefData(new wxCairoBrushData( this, brush ));
- return p;
}
+ return p;
}
wxGraphicsBrush
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);
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;
}
-// sets the font
wxGraphicsFont wxCairoRenderer::CreateFont( const wxFont &font , const wxColour &col )
{
+ wxGraphicsFont p;
+ ENSURE_LOADED_OR_RETURN(p);
if ( font.IsOk() )
{
- wxGraphicsFont p;
p.SetRefData(new wxCairoFontData( this , font, col ));
- return p;
}
- else
- return wxNullGraphicsFont;
+ 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() )
{
- wxGraphicsBitmap p;
p.SetRefData(new wxCairoBitmapData( this , bmp ));
- return p;
}
- else
- return wxNullGraphicsBitmap;
+ 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 )
{
- wxGraphicsBitmap p;
p.SetRefData(new wxCairoBitmapData( this , (cairo_surface_t*) bitmap ));
- return p;
}
- else
- return wxNullGraphicsBitmap;
+ return p;
}
wxGraphicsBitmap
wxDouble WXUNUSED(w),
wxDouble WXUNUSED(h))
{
+ wxGraphicsBitmap p;
wxFAIL_MSG("wxCairoRenderer::CreateSubBitmap is not implemented.");
- return wxNullGraphicsBitmap;
+ return p;
}
wxGraphicsRenderer* wxGraphicsRenderer::GetCairoRenderer()
projects / wxWidgets.git / blobdiff