#include "wx/wxprec.h"
-#include "wx/dc.h"
-
#ifdef __BORLANDC__
#pragma hdrstop
#endif
+#if wxUSE_GRAPHICS_CONTEXT
+
+#include "wx/dc.h"
+
#ifndef WX_PRECOMP
#include "wx/image.h"
#include "wx/window.h"
#include "wx/module.h"
#endif
-#ifdef __WXGTK__
-#include "wx/gtk/win_gtk.h"
-#endif
-
-#include "wx/graphics.h"
-
-#if wxUSE_GRAPHICS_CONTEXT
+#include "wx/private/graphics.h"
+#include "wx/rawbmp.h"
#include <vector>
#include <cairo.h>
#ifdef __WXGTK__
#include <gtk/gtk.h>
+#include "wx/fontutil.h"
+#include "wx/gtk/dc.h"
+#endif
+
+#ifdef __WXMSW__
+#include <cairo-win32.h>
+#endif
+
+#ifdef __WXMAC__
+#include "wx/mac/private.h"
+#include <cairo-quartz.h>
+#include <cairo-atsui.h>
#endif
class WXDLLIMPEXP_CORE wxCairoPathData : public wxGraphicsPathData
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();
~wxCairoFontData();
virtual void Apply( wxGraphicsContext* context );
+#ifdef __WXGTK__
+ const PangoFontDescription* GetFont() const { return m_font; }
+#endif
private :
- wxCharBuffer m_fontName;
double m_size;
- cairo_font_slant_t m_slant;
- cairo_font_weight_t m_weight;
double m_red;
double m_green;
double m_blue;
double m_alpha;
+#ifdef __WXMAC__
+ cairo_font_face_t *m_font;
+#elif defined(__WXGTK__)
+ PangoFontDescription* m_font;
+#else
+ wxCharBuffer m_fontName;
+ cairo_font_slant_t m_slant;
+ cairo_font_weight_t m_weight;
+#endif
};
class WXDLLIMPEXP_CORE wxCairoContext : public wxGraphicsContext
public:
wxCairoContext( wxGraphicsRenderer* renderer, const wxWindowDC& dc );
+ wxCairoContext( wxGraphicsRenderer* renderer, const wxMemoryDC& dc );
#ifdef __WXGTK__
wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable );
#endif
wxCairoContext();
virtual ~wxCairoContext();
+ virtual bool ShouldOffset() const
+ {
+ 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 ®ion );
// clips drawings to the rect
virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const;
private:
+ void Init(cairo_t *context);
+
cairo_t* m_context;
};
break;
case wxLONG_DASH :
- m_lengths = dotted ;
+ m_lengths = dashed ;
m_count = WXSIZEOF(dashed);
break;
case wxSHORT_DASH :
- m_lengths = dotted ;
+ m_lengths = short_dashed ;
m_count = WXSIZEOF(short_dashed);
break;
case wxDOT_DASH :
- m_lengths = dotted ;
+ m_lengths = dotted_dashed ;
m_count = WXSIZEOF(dotted_dashed);
break;
m_green = col.Green()/255.0;
m_blue = col.Blue()/255.0;
m_alpha = col.Alpha()/255.0;
-
m_size = font.GetPointSize();
+
+#ifdef __WXMAC__
+ m_font = cairo_atsui_font_face_create_for_atsu_font_id( font.MacGetATSUFontID() );
+#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;
+#endif
}
wxCairoFontData::~wxCairoFontData()
{
+#ifdef __WXMAC__
+ cairo_font_face_destroy( m_font );
+#elif defined(__WXGTK__)
+ pango_font_description_free( m_font );
+#else
+#endif
}
void wxCairoFontData::Apply( wxGraphicsContext* context )
{
cairo_t * ctext = (cairo_t*) context->GetNativeContext();
cairo_set_source_rgba(ctext,m_red,m_green, m_blue,m_alpha);
- cairo_select_font_face(ctext,m_fontName,m_slant,m_weight);
- cairo_set_font_size(ctext,m_size);
- // TODO UNDERLINE
- // TODO FIX SIZE
+#ifdef __WXGTK__
+ // the rest is done using Pango layouts
+#elif defined(__WXMAC__)
+ cairo_set_font_face(ctext, m_font);
+ cairo_set_font_size(ctext, m_size );
+#else
+ cairo_select_font_face(ctext, m_fontName, m_slant, m_weights );
+ cairo_set_font_size(ctext, m_size );
+#endif
}
//-----------------------------------------------------------------------------
void wxCairoPathData::AddPath( const wxGraphicsPathData* path )
{
- // TODO
+ cairo_path_t* p = (cairo_path_t*)path->GetNativePath();
+ cairo_append_path(m_pathContext, p);
+ UnGetNativePath(p);
}
void wxCairoPathData::CloseSubpath()
}
}
-bool wxCairoPathData::Contains( wxDouble x, wxDouble y, int fillStyle ) const
+bool wxCairoPathData::Contains( wxDouble x, wxDouble y, int WXUNUSED(fillStyle) ) const
{
return cairo_in_stroke( m_pathContext, x, y) != 0;
}
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()
{
// 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 wxWindowDC& dc )
: wxGraphicsContext(renderer)
{
#ifdef __WXGTK__
- m_context = gdk_cairo_create( dc.m_window ) ;
+ wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
+ Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
+#endif
+#ifdef __WXMAC__
+ int width, height;
+ dc.GetSize( &width, &height );
+ 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)
+{
+#ifdef __WXGTK__
+ wxGTKDCImpl *impldc = (wxGTKDCImpl*) dc.GetImpl();
+ Init( gdk_cairo_create( impldc->GetGDKWindow() ) );
+#endif
+#ifdef __WXMAC__
+ int width, height;
+ dc.GetSize( &width, &height );
+ 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
- PushState();
- PushState();
}
#ifdef __WXGTK__
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, GdkDrawable *drawable )
: wxGraphicsContext(renderer)
{
- m_context = gdk_cairo_create( drawable ) ;
- PushState();
- PushState();
+ Init( gdk_cairo_create( drawable ) );
}
#endif
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, cairo_t *context )
: wxGraphicsContext(renderer)
{
- m_context = context ;
- PushState();
- PushState();
+ Init( context );
}
wxCairoContext::wxCairoContext( wxGraphicsRenderer* renderer, wxWindow *window)
#ifdef __WXGTK__
// something along these lines (copied from dcclient)
- GtkWidget *widget = window->m_wxwindow;
-
// 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 ( !widget )
+ if (window->m_wxwindow == NULL)
{
window = window->GetParent();
- widget = window->m_wxwindow;
}
- wxASSERT_MSG( widget, wxT("wxCairoContext needs a widget") );
+ wxASSERT_MSG( window->m_wxwindow, wxT("wxCairoContext needs a widget") );
- GtkPizza *pizza = GTK_PIZZA( widget );
- GdkDrawable* drawable = pizza->bin_window;
- m_context = gdk_cairo_create( drawable ) ;
+ Init(gdk_cairo_create(window->GTKGetDrawingWindow()));
#endif
- PushState();
- PushState();
}
wxCairoContext::~wxCairoContext()
}
}
+void wxCairoContext::Init(cairo_t *context)
+{
+ m_context = context ;
+ PushState();
+ PushState();
+}
+
-void wxCairoContext::Clip( const wxRegion & WXUNUSED(region) )
+void wxCairoContext::Clip( const wxRegion& region )
{
-// TODO
+ // 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 )
{
-// TODO
+ // 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()
{
-// TODO
+ cairo_reset_clip(m_context);
}
{
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);
{
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);
void wxCairoContext::DrawBitmap( const wxBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
- /*
- Bitmap* image = Bitmap::FromHBITMAP((HBITMAP)bmp.GetHBITMAP(),(HPALETTE)bmp.GetPalette()->GetHPALETTE());
- m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
- delete image ;
- */
+ wxCHECK_RET( bmp.IsOk(), wxT("Invalid bitmap in wxCairoContext::DrawBitmap"));
+
+ cairo_surface_t* surface;
+ int bw = bmp.GetWidth();
+ int bh = bmp.GetHeight();
+ wxBitmap bmpSource = bmp; // we need a non-const instance
+ unsigned char* buffer = new unsigned char[bw*bh*4];
+ wxUint32* data = (wxUint32*)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())
+ {
+ surface = cairo_image_surface_create_for_data(
+ buffer, CAIRO_FORMAT_ARGB32, bw, bh, bw*4);
+ wxAlphaPixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxAlphaPixelData::Iterator p(pixData);
+ for (int y=0; y<bh; y++)
+ {
+ wxAlphaPixelData::Iterator rowStart = p;
+ for (int x=0; x<bw; 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;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+ else // no alpha
+ {
+ surface = cairo_image_surface_create_for_data(
+ buffer, CAIRO_FORMAT_RGB24, bw, bh, bw*4);
+ wxNativePixelData pixData(bmpSource, wxPoint(0,0), wxSize(bw, bh));
+ wxCHECK_RET( pixData, wxT("Failed to gain raw access to bitmap data."));
+
+ wxNativePixelData::Iterator p(pixData);
+ for (int y=0; y<bh; y++)
+ {
+ wxNativePixelData::Iterator rowStart = p;
+ for (int x=0; x<bw; 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;
+ }
+ p = rowStart;
+ p.OffsetY(pixData, 1);
+ }
+ }
+
+
+ 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.
+ cairo_pattern_t* pattern = cairo_pattern_create_for_surface(surface);
+ wxDouble scaleX = w / bw;
+ wxDouble scaleY = h / bh;
+ cairo_scale(m_context, scaleX, scaleY);
+
+ // prepare to draw the image
+ cairo_translate(m_context, x, y);
+ cairo_set_source(m_context, pattern);
+ // use the original size here since the context is scaled already...
+ cairo_rectangle(m_context, 0, 0, bw, bh);
+ // fill the rectangle using the pattern
+ cairo_fill(m_context);
+
+ // clean up
+ cairo_pattern_destroy(pattern);
+ cairo_surface_destroy(surface);
+ delete [] buffer;
+ PopState();
}
void wxCairoContext::DrawIcon( const wxIcon &icon, wxDouble x, wxDouble y, wxDouble w, wxDouble h )
{
- /*
- Bitmap* image = Bitmap::FromHICON((HICON)icon.GetHICON());
- m_context->DrawImage(image,(REAL) x,(REAL) y,(REAL) w,(REAL) h) ;
- delete image ;
- */
+ // 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::DrawText( const wxString &str, wxDouble x, wxDouble y )
{
- if ( m_font.IsNull() || str.IsEmpty())
- return ;
- cairo_move_to(m_context,x,y);
- const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
+ if ( m_font.IsNull() || str.empty())
+ return;
+
+#ifdef __WXGTK__
+ const wxCharBuffer data = str.utf8_str();
+ if ( !data )
+ return;
+ size_t datalen = strlen(data);
((wxCairoFontData*)m_font.GetRefData())->Apply(this);
+
+ PangoLayout *layout = pango_cairo_create_layout (m_context);
+ pango_layout_set_font_description( layout, ((wxCairoFontData*)m_font.GetRefData())->GetFont());
+ pango_layout_set_text(layout, data, datalen);
+ cairo_move_to(m_context, x, y);
+ pango_cairo_show_layout (m_context, layout);
+
+ g_object_unref (layout);
+#else
+ ((wxCairoFontData*)m_font.GetRefData())->Apply(this);
+ // 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);
+
+ const wxWX2MBbuf buf(str.mb_str(wxConvUTF8));
cairo_show_text(m_context,buf);
+#endif
}
void wxCairoContext::GetTextExtent( const wxString &str, wxDouble *width, wxDouble *height,
wxDouble *descent, wxDouble *externalLeading ) const
{
- // TODO
+ if ( width )
+ *width = 0;
+ if ( height )
+ *height = 0;
+ if ( descent )
+ *descent = 0;
+ if ( externalLeading )
+ *externalLeading = 0;
+
+ if ( m_font.IsNull() || str.empty())
+ return;
+
+#ifdef __WXGTK__
+ 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 )
+ {
+ return;
+ }
+ 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)
+ {
+ 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));
+ }
+#endif
}
void wxCairoContext::GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const
// Context
virtual wxGraphicsContext * CreateContext( const wxWindowDC& dc);
-
-#ifdef __WXMSW__
virtual wxGraphicsContext * CreateContext( const wxMemoryDC& dc);
-#endif
virtual wxGraphicsContext * CreateContextFromNativeContext( void * context );
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__
wxGraphicsRenderer* wxGraphicsRenderer::GetDefaultRenderer()
return new wxCairoContext(this,dc);
}
-#ifdef __WXMSW__
wxGraphicsContext * wxCairoRenderer::CreateContext( const wxMemoryDC& dc)
{
- return NULL;
+ return new wxCairoContext(this,dc);
}
-#endif
wxGraphicsContext * wxCairoRenderer::CreateContextFromNativeContext( void * context )
{
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