// Purpose: graphics context methods common to all platforms
// Author: Stefan Csomor
// Modified by:
-// Created:
+// Created:
// RCS-ID: $Id$
// Copyright: (c) Stefan Csomor
// Licence: wxWindows licence
}
void wxGCDC::SetGraphicsContext( wxGraphicsContext* ctx )
-{
+{
delete m_graphicContext;
m_graphicContext = ctx;
- m_matrixOriginal = m_graphicContext->GetTransform();
+ if ( m_graphicContext )
+ {
+ m_matrixOriginal = m_graphicContext->GetTransform();
+ m_ok = true;
+ // apply the stored transformations to the passed in context
+ ComputeScaleAndOrigin();
+ m_graphicContext->SetFont( m_font , m_textForegroundColour );
+ m_graphicContext->SetPen( m_pen );
+ m_graphicContext->SetBrush( m_brush);
+ }
}
wxGCDC::wxGCDC(const wxWindowDC& dc)
{
Init();
- m_graphicContext = wxGraphicsContext::Create(dc);
- m_matrixOriginal = m_graphicContext->GetTransform();
- m_ok = true;
- if ( dc.GetFont().Ok())
- m_graphicContext->SetFont( m_graphicContext->CreateFont(dc.GetFont(),dc.GetTextForeground()));
- if ( dc.GetPen().Ok())
- m_graphicContext->SetPen( m_graphicContext->CreatePen(dc.GetPen()));
- if ( dc.GetBrush().Ok())
- m_graphicContext->SetBrush( m_graphicContext->CreateBrush(dc.GetBrush()));
+ SetGraphicsContext( wxGraphicsContext::Create(dc) );
+}
+
+#ifdef __WXMSW__
+wxGCDC::wxGCDC(const wxMemoryDC& dc)
+{
+ Init();
+ SetGraphicsContext( wxGraphicsContext::Create(dc) );
}
+#endif
void wxGCDC::Init()
{
m_brush = *wxWHITE_BRUSH;
m_graphicContext = NULL;
+ m_logicalFunctionSupported = true;
}
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid DC") );
wxCHECK_RET( bmp.Ok(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid bitmap") );
- m_graphicContext->DrawBitmap( bmp, x , y , bmp.GetWidth() , bmp.GetHeight() );
+ if ( bmp.GetDepth() == 1 )
+ {
+ m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
+ m_graphicContext->SetBrush( wxBrush( m_textBackgroundColour , wxSOLID ) );
+ m_graphicContext->DrawRectangle( x , y , bmp.GetWidth() , bmp.GetHeight() );
+ m_graphicContext->SetBrush( wxBrush( m_textForegroundColour , wxSOLID ) );
+ m_graphicContext->DrawBitmap( bmp, x , y , bmp.GetWidth() , bmp.GetHeight() );
+ m_graphicContext->SetBrush( m_graphicContext->CreateBrush(m_brush));
+ m_graphicContext->SetPen( m_graphicContext->CreatePen(m_pen));
+ }
+ else
+ m_graphicContext->DrawBitmap( bmp, x , y , bmp.GetWidth() , bmp.GetHeight() );
}
void wxGCDC::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
void wxGCDC::DoSetClippingRegionAsRegion( const wxRegion ®ion )
{
+ // region is in device coordinates
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegionAsRegion - invalid DC") );
if (region.Empty())
return;
}
+ wxRegion logRegion( region );
wxCoord x, y, w, h;
- region.GetBox( x, y, w, h );
- m_graphicContext->Clip( region );
+ logRegion.Offset( DeviceToLogicalX(0), DeviceToLogicalY(0) );
+ logRegion.GetBox( x, y, w, h );
+
+ m_graphicContext->Clip( logRegion );
if ( m_clipping )
{
m_clipX1 = wxMax( m_clipX1, x );
void wxGCDC::DestroyClippingRegion()
{
m_graphicContext->ResetClip();
+ // currently the clip eg of a window extends to the area between the scrollbars
+ // so we must explicitely make sure it only covers the area we want it to draw
+ int width, height ;
+ GetSize( &width , &height ) ;
+ m_graphicContext->Clip( DeviceToLogicalX(0) , DeviceToLogicalY(0) , width, height );
+
m_graphicContext->SetPen( m_pen );
m_graphicContext->SetBrush( m_brush );
{
m_scaleX = m_logicalScaleX * m_userScaleX;
m_scaleY = m_logicalScaleY * m_userScaleY;
- m_deviceOriginX = /* m_deviceOriginX + */ m_logicalOriginX;
- m_deviceOriginY = /* m_deviceOriginY + */ m_logicalOriginY;
- m_matrixCurrent = m_graphicContext->CreateMatrix();
- m_matrixCurrent.Translate( m_deviceOriginX , m_deviceOriginY );
- m_matrixCurrent.Scale( m_scaleX, m_scaleY );
-
- m_graphicContext->SetTransform( m_matrixOriginal );
- m_graphicContext->ConcatTransform( m_matrixCurrent );
+ if ( m_graphicContext )
+ {
+ m_matrixCurrent = m_graphicContext->CreateMatrix();
+ m_matrixCurrent.Translate( m_deviceOriginX, m_deviceOriginY );
+ m_matrixCurrent.Scale( m_scaleX, m_scaleY );
+ // the logical origin sets the origin to have new coordinates
+ m_matrixCurrent.Translate( -m_logicalOriginX, -m_logicalOriginY );
+
+ m_graphicContext->SetTransform( m_matrixOriginal );
+ m_graphicContext->ConcatTransform( m_matrixCurrent );
+ }
}
void wxGCDC::SetPalette( const wxPalette& WXUNUSED(palette) )
m_graphicContext->SetBrush( m_brush );
}
}
-
+
void wxGCDC::SetBackground( const wxBrush &brush )
{
if (m_backgroundBrush == brush)
return;
m_logicalFunction = function;
-#if wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
-
- CGContextRef cgContext = ((wxCairoContext*)(m_graphicContext))->GetNativeContext();
- if ( m_logicalFunction == wxCOPY )
- CGContextSetBlendMode( cgContext, kCGBlendModeNormal );
- else if ( m_logicalFunction == wxINVERT )
- CGContextSetBlendMode( cgContext, kCGBlendModeExclusion );
+ if ( m_graphicContext->SetLogicalFunction( function ) )
+ m_logicalFunctionSupported=true;
else
- CGContextSetBlendMode( cgContext, kCGBlendModeNormal );
-#endif
-
+ m_logicalFunctionSupported=false;
}
bool wxGCDC::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLine - invalid DC") );
-#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
-
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
-#endif
m_graphicContext->StrokeLine(x1,y1,x2,y2);
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
int w = 0, h = 0;
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
double dx = x1 - xc;
wxGraphicsPath path = m_graphicContext->CreatePath();
if ( fill && ((x1!=x2)||(y1!=y2)) )
path.MoveToPoint( xc, yc );
- path.AddArc( xc, yc , rad , DegToRad(sa) , DegToRad(ea), false );
+ // since these angles (ea,sa) are measured counter-clockwise, we invert them to
+ // get clockwise angles
+ path.AddArc( xc, yc , rad , DegToRad(-sa) , DegToRad(-ea), false );
if ( fill && ((x1!=x2)||(y1!=y2)) )
path.AddLineToPoint( xc, yc );
m_graphicContext->DrawPath(path);
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipticArc - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- bool fill = m_brush.GetStyle() != wxTRANSPARENT;
-
wxGraphicsPath path = m_graphicContext->CreatePath();
m_graphicContext->PushState();
- m_graphicContext->Translate(x+w/2,y+h/2);
+ m_graphicContext->Translate(x+w/2.0,y+h/2.0);
wxDouble factor = ((wxDouble) w) / h;
m_graphicContext->Scale( factor , 1.0);
- if ( fill && (sa!=ea) )
- path.MoveToPoint(0,0);
+
// since these angles (ea,sa) are measured counter-clockwise, we invert them to
// get clockwise angles
- path.AddArc( 0, 0, h/2 , DegToRad(-sa) , DegToRad(-ea), sa > ea );
- if ( fill && (sa!=ea) )
- path.AddLineToPoint(0,0);
+ path.AddArc( 0, 0, h/2.0 , DegToRad(-sa) , DegToRad(-ea), sa > ea );
m_graphicContext->DrawPath( path );
m_graphicContext->PopState();
}
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLines - invalid DC") );
-#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES
-
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
-#endif
wxPoint2DDouble* pointsD = new wxPoint2DDouble[n];
for( int i = 0; i < n; ++i)
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawSpline - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
wxGraphicsPath path = m_graphicContext->CreatePath();
if ( n <= 0 || (m_brush.GetStyle() == wxTRANSPARENT && m_pen.GetStyle() == wxTRANSPARENT ) )
return;
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
bool closeIt = false;
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRectangle - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
// CMB: draw nothing if transformed w or h is 0
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRoundedRectangle - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
if (radius < 0.0)
if (w == 0 || h == 0)
return;
+ if ( m_graphicContext->ShouldOffset() )
+ {
+ // if we are offsetting the entire rectangle is moved 0.5, so the
+ // border line gets off by 1
+ w -= 1;
+ h -= 1;
+ }
m_graphicContext->DrawRoundedRectangle( x,y,w,h,radius);
}
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipse - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
+ if ( m_graphicContext->ShouldOffset() )
+ {
+ // if we are offsetting the entire rectangle is moved 0.5, so the
+ // border line gets off by 1
+ w -= 1;
+ h -= 1;
+ }
m_graphicContext->DrawEllipse(x,y,w,h);
}
bool wxGCDC::DoBlit(
wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
- wxDC *source, wxCoord xsrc, wxCoord ysrc, int logical_func , bool WXUNUSED(useMask),
+ wxDC *source, wxCoord xsrc, wxCoord ysrc, int logical_func , bool useMask,
wxCoord xsrcMask, wxCoord ysrcMask )
{
- wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid DC") );
- wxCHECK_MSG( source->Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid source DC") );
-
+ return DoStretchBlit( xdest, ydest, width, height,
+ source, xsrc, ysrc, width, height, logical_func, useMask,
+ xsrcMask,ysrcMask );
+}
+
+bool wxGCDC::DoStretchBlit(
+ wxCoord xdest, wxCoord ydest, wxCoord dstWidth, wxCoord dstHeight,
+ wxDC *source, wxCoord xsrc, wxCoord ysrc, wxCoord srcWidth, wxCoord srcHeight,
+ int logical_func , bool WXUNUSED(useMask),
+ wxCoord xsrcMask, wxCoord ysrcMask )
+{
+ wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoStretchBlit - invalid DC") );
+ wxCHECK_MSG( source->Ok(), false, wxT("wxGCDC(cg)::DoStretchBlit - invalid source DC") );
+
if ( logical_func == wxNO_OP )
return true;
else if ( logical_func != wxCOPY )
ysrcMask = ysrc;
}
- wxCoord yysrc = source-> LogicalToDeviceY(ysrc);
- wxCoord xxsrc = source-> LogicalToDeviceX(xsrc);
- wxCoord wwsrc = source-> LogicalToDeviceXRel(width);
- wxCoord hhsrc = source-> LogicalToDeviceYRel(height);
-
- wxBitmap blit;
- wxMemoryDC* memdc = wxDynamicCast(source,wxMemoryDC);
- if ( memdc )
- {
- blit = memdc->GetSelectedBitmap();
+ wxRect subrect(source->LogicalToDeviceX(xsrc),
+ source->LogicalToDeviceY(ysrc),
+ source->LogicalToDeviceXRel(srcWidth),
+ source->LogicalToDeviceYRel(srcHeight));
- wxASSERT_MSG( blit.Ok() , wxT("Invalid bitmap for blitting") );
+ // if needed clip the subrect down to the size of the source DC
+ wxCoord sw, sh;
+ source->GetSize(&sw, &sh);
+ sw = source->LogicalToDeviceXRel(sw);
+ sh = source->LogicalToDeviceYRel(sh);
+ if (subrect.x + subrect.width > sw)
+ subrect.width = sw - subrect.x;
+ if (subrect.y + subrect.height > sh)
+ subrect.height = sh - subrect.y;
- wxCoord bmpwidth = blit.GetWidth();
- wxCoord bmpheight = blit.GetHeight();
+ wxBitmap blit = source->GetAsBitmap( &subrect );
- if ( xxsrc != 0 || yysrc != 0 || bmpwidth != wwsrc || bmpheight != hhsrc )
- {
- wwsrc = wxMin( wwsrc , bmpwidth - xxsrc );
- hhsrc = wxMin( hhsrc , bmpheight - yysrc );
- if ( wwsrc > 0 && hhsrc > 0 )
- {
- if ( xxsrc >= 0 && yysrc >= 0 )
- {
- wxRect subrect( xxsrc, yysrc, wwsrc , hhsrc );
- // TODO we perhaps could add a DrawSubBitmap call to dc for performance reasons
- blit = blit.GetSubBitmap( subrect );
- }
- else
- {
- // in this case we'd probably have to adjust the different coordinates, but
- // we have to find out proper contract first
- blit = wxNullBitmap;
- }
- }
- else
- {
- blit = wxNullBitmap;
- }
- }
- }
- else
- {
- wxWindowDC* windc = wxDynamicCast(source,wxWindowDC);
- if (windc)
- {
- wxBitmap bmp;
- bmp = windc->GetAsBitmap();
- if (bmp.IsOk())
- blit = bmp.GetSubBitmap( wxRect(xsrc, ysrc, width, height ) );
- }
- }
-
if ( blit.Ok() )
{
- m_graphicContext->DrawBitmap( blit, xdest , ydest , width , height );
+ m_graphicContext->DrawBitmap( blit, xdest, ydest,
+ dstWidth, dstHeight);
}
else
{
if ( str.length() == 0 )
return;
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- m_graphicContext->DrawText( str, x ,y , DegToRad(angle ));
+ if ( m_backgroundMode == wxTRANSPARENT )
+ m_graphicContext->DrawText( str, x ,y , DegToRad(angle ));
+ else
+ m_graphicContext->DrawText( str, x ,y , DegToRad(angle ), m_graphicContext->CreateBrush( wxBrush(m_textBackgroundColour,wxSOLID) ) );
}
void wxGCDC::DoDrawText(const wxString& str, wxCoord x, wxCoord y)
if ( str.length() == 0 )
return;
- if ( m_logicalFunction != wxCOPY )
+
+ if ( !m_logicalFunctionSupported )
return;
- m_graphicContext->DrawText( str, x ,y);
+ if ( m_backgroundMode == wxTRANSPARENT )
+ m_graphicContext->DrawText( str, x ,y);
+ else
+ m_graphicContext->DrawText( str, x ,y , m_graphicContext->CreateBrush( wxBrush(m_textBackgroundColour,wxSOLID) ) );
}
bool wxGCDC::CanGetTextExtent() const
m_graphicContext->GetTextExtent( str, &w, &h, &d, &e );
if ( height )
- *height = h;
+ *height = (wxCoord)h;
if ( descent )
- *descent = d;
+ *descent = (wxCoord)d;
if ( externalLeading )
- *externalLeading =e;
+ *externalLeading = (wxCoord)e;
if ( width )
- *width = w;
+ *width = (wxCoord)w;
if ( theFont )
{
wxPen p = *wxTRANSPARENT_PEN;
m_graphicContext->SetPen( p );
DoDrawRectangle( 0, 0, 32000 , 32000 );
- m_graphicContext->SetPen( m_pen );
+ m_graphicContext->SetPen( m_pen );
m_graphicContext->SetBrush( m_brush );
}
projects / wxWidgets.git / blobdiff