// 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;
+ 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_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") );
- wxCoord xx = LogicalToDeviceX(x);
- wxCoord yy = LogicalToDeviceY(y);
- wxCoord w = bmp.GetWidth();
- wxCoord h = bmp.GetHeight();
- wxCoord ww = LogicalToDeviceXRel(w);
- wxCoord hh = LogicalToDeviceYRel(h);
-
- m_graphicContext->DrawBitmap( bmp, xx , yy , ww , hh );
+ 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 )
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawIcon - invalid DC") );
wxCHECK_RET( icon.Ok(), wxT("wxGCDC(cg)::DoDrawIcon - invalid icon") );
- wxCoord xx = LogicalToDeviceX(x);
- wxCoord yy = LogicalToDeviceY(y);
wxCoord w = icon.GetWidth();
wxCoord h = icon.GetHeight();
- wxCoord ww = LogicalToDeviceXRel(w);
- wxCoord hh = LogicalToDeviceYRel(h);
- m_graphicContext->DrawIcon( icon , xx, yy, ww, hh );
+ m_graphicContext->DrawIcon( icon , x, y, w, h );
}
-void wxGCDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+void wxGCDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegion - invalid DC") );
- wxCoord xx, yy, ww, hh;
- xx = LogicalToDeviceX(x);
- yy = LogicalToDeviceY(y);
- ww = LogicalToDeviceXRel(width);
- hh = LogicalToDeviceYRel(height);
-
- m_graphicContext->Clip( xx, yy, ww, hh );
+ m_graphicContext->Clip( x, y, w, h );
if ( m_clipping )
{
- m_clipX1 = wxMax( m_clipX1, xx );
- m_clipY1 = wxMax( m_clipY1, yy );
- m_clipX2 = wxMin( m_clipX2, (xx + ww) );
- m_clipY2 = wxMin( m_clipY2, (yy + hh) );
+ m_clipX1 = wxMax( m_clipX1, x );
+ m_clipY1 = wxMax( m_clipY1, y );
+ m_clipX2 = wxMin( m_clipX2, (x + w) );
+ m_clipY2 = wxMin( m_clipY2, (y + h) );
}
else
{
m_clipping = true;
- m_clipX1 = xx;
- m_clipY1 = yy;
- m_clipX2 = xx + ww;
- m_clipY2 = yy + hh;
+ m_clipX1 = x;
+ m_clipY1 = y;
+ m_clipX2 = x + w;
+ m_clipY2 = y + h;
}
}
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 );
- wxCoord xx, yy, ww, hh;
- xx = LogicalToDeviceX(x);
- yy = LogicalToDeviceY(y);
- ww = LogicalToDeviceXRel(w);
- hh = LogicalToDeviceYRel(h);
-
- // if we have a scaling that we cannot map onto native regions
- // we must use the box
- if ( ww != w || hh != h )
+
+ logRegion.Offset( DeviceToLogicalX(0), DeviceToLogicalY(0) );
+ logRegion.GetBox( x, y, w, h );
+
+ m_graphicContext->Clip( logRegion );
+ if ( m_clipping )
{
- wxGCDC::DoSetClippingRegion( x, y, w, h );
+ m_clipX1 = wxMax( m_clipX1, x );
+ m_clipY1 = wxMax( m_clipY1, y );
+ m_clipX2 = wxMin( m_clipX2, (x + w) );
+ m_clipY2 = wxMin( m_clipY2, (y + h) );
}
else
{
- m_graphicContext->Clip( region );
- if ( m_clipping )
- {
- m_clipX1 = wxMax( m_clipX1, xx );
- m_clipY1 = wxMax( m_clipY1, yy );
- m_clipX2 = wxMin( m_clipX2, (xx + ww) );
- m_clipY2 = wxMin( m_clipY2, (yy + hh) );
- }
- else
- {
- m_clipping = true;
+ m_clipping = true;
- m_clipX1 = xx;
- m_clipY1 = yy;
- m_clipX2 = xx + ww;
- m_clipY2 = yy + hh;
- }
+ m_clipX1 = x;
+ m_clipY1 = y;
+ m_clipX2 = x + w;
+ m_clipY2 = y + h;
}
}
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 );
void wxGCDC::ComputeScaleAndOrigin()
{
- // CMB: copy scale to see if it changes
- double origScaleX = m_scaleX;
- double origScaleY = m_scaleY;
m_scaleX = m_logicalScaleX * m_userScaleX;
m_scaleY = m_logicalScaleY * m_userScaleY;
- m_deviceOriginX = m_deviceOriginX + m_logicalOriginX;
- m_deviceOriginY = m_deviceOriginY + m_logicalOriginY;
- // CMB: if scale has changed call SetPen to recalulate the line width
- if (m_scaleX != origScaleX || m_scaleY != origScaleY)
+ if ( m_graphicContext )
{
- // this is a bit artificial, but we need to force wxDC to think
- // the pen has changed
- wxPen pen(GetPen());
- m_pen = wxNullPen;
- SetPen(pen);
- SetFont(m_font);
+ 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 );
}
}
{
wxFont f = font;
if ( f.Ok() )
- f.SetPointSize( LogicalToDeviceYRel(font.GetPointSize()));
+ f.SetPointSize( /*LogicalToDeviceYRel*/(font.GetPointSize()));
m_graphicContext->SetFont( f, m_textForegroundColour );
}
}
m_pen = pen;
if ( m_graphicContext )
{
- if ( m_pen.GetStyle() == wxSOLID || m_pen.GetStyle() == wxTRANSPARENT )
- {
- m_graphicContext->SetPen( m_pen );
- }
- else
- {
- // we have to compensate for moved device origins etc. otherwise patterned pens are standing still
- // eg when using a wxScrollWindow and scrolling around
- int origX = LogicalToDeviceX( 0 );
- int origY = LogicalToDeviceY( 0 );
- m_graphicContext->Translate( origX , origY );
- m_graphicContext->SetPen( m_pen );
- m_graphicContext->Translate( -origX , -origY );
- }
+ m_graphicContext->SetPen( m_pen );
}
}
m_brush = brush;
if ( m_graphicContext )
{
- if ( brush.GetStyle() == wxSOLID || brush.GetStyle() == wxTRANSPARENT )
- {
- m_graphicContext->SetBrush( m_brush );
- }
- else
- {
- // we have to compensate for moved device origins etc. otherwise patterned brushes are standing still
- // eg when using a wxScrollWindow and scrolling around
- // TODO on MSW / GDIPlus this still occurs with hatched brushes
- int origX = LogicalToDeviceX(0);
- int origY = LogicalToDeviceY(0);
- m_graphicContext->Translate( origX , origY );
- m_graphicContext->SetBrush( m_brush );
- m_graphicContext->Translate( -origX , -origY );
- }
+ 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
-
- wxCoord xx1 = LogicalToDeviceX(x1);
- wxCoord yy1 = LogicalToDeviceY(y1);
- wxCoord xx2 = LogicalToDeviceX(x2);
- wxCoord yy2 = LogicalToDeviceY(y2);
- m_graphicContext->StrokeLine(xx1,yy1,xx2,yy2);
+ m_graphicContext->StrokeLine(x1,y1,x2,y2);
CalcBoundingBox(x1, y1);
CalcBoundingBox(x2, y2);
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
int w = 0, h = 0;
GetSize( &w, &h );
- wxCoord xx = LogicalToDeviceX(x);
- wxCoord yy = LogicalToDeviceY(y);
- wxCoord xw = LogicalToDeviceX(w);
- wxCoord x0 = LogicalToDeviceX(0);
- wxCoord y0 = LogicalToDeviceY(0);
- wxCoord yh = LogicalToDeviceY(h);
+ m_graphicContext->StrokeLine(0,y,w,y);
+ m_graphicContext->StrokeLine(x,0,x,h);
- m_graphicContext->StrokeLine(x0,yy,xw,yy);
- m_graphicContext->StrokeLine(xx,y0,xx,yh);
-
- CalcBoundingBox(x0, y0);
- CalcBoundingBox(x0+xw, y0+yh);
+ CalcBoundingBox(0, 0);
+ CalcBoundingBox(0+w, 0+h);
}
void wxGCDC::DoDrawArc( wxCoord x1, wxCoord y1,
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- wxCoord xx1 = LogicalToDeviceX(x1);
- wxCoord yy1 = LogicalToDeviceY(y1);
- wxCoord xx2 = LogicalToDeviceX(x2);
- wxCoord yy2 = LogicalToDeviceY(y2);
- wxCoord xxc = LogicalToDeviceX(xc);
- wxCoord yyc = LogicalToDeviceY(yc);
-
- double dx = xx1 - xxc;
- double dy = yy1 - yyc;
+ double dx = x1 - xc;
+ double dy = y1 - yc;
double radius = sqrt((double)(dx * dx + dy * dy));
wxCoord rad = (wxCoord)radius;
double sa, ea;
- if (xx1 == xx2 && yy1 == yy2)
+ if (x1 == x2 && y1 == y2)
{
sa = 0.0;
ea = 360.0;
}
else
{
- sa = (xx1 - xxc == 0) ?
- (yy1 - yyc < 0) ? 90.0 : -90.0 :
- -atan2(double(yy1 - yyc), double(xx1 - xxc)) * RAD2DEG;
- ea = (xx2 - xxc == 0) ?
- (yy2 - yyc < 0) ? 90.0 : -90.0 :
- -atan2(double(yy2 - yyc), double(xx2 - xxc)) * RAD2DEG;
+ sa = (x1 - xc == 0) ?
+ (y1 - yc < 0) ? 90.0 : -90.0 :
+ -atan2(double(y1 - yc), double(x1 - xc)) * RAD2DEG;
+ ea = (x2 - xc == 0) ?
+ (y2 - yc < 0) ? 90.0 : -90.0 :
+ -atan2(double(y2 - yc), double(x2 - xc)) * RAD2DEG;
}
bool fill = m_brush.GetStyle() != wxTRANSPARENT;
- wxGraphicsPath* path = m_graphicContext->CreatePath();
+ wxGraphicsPath path = m_graphicContext->CreatePath();
if ( fill && ((x1!=x2)||(y1!=y2)) )
- path->MoveToPoint( xxc, yyc );
- path->AddArc( xxc, yyc , rad , DegToRad(sa) , DegToRad(ea), false );
+ path.MoveToPoint( xc, yc );
+ // 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( xxc, yyc );
+ path.AddLineToPoint( xc, yc );
m_graphicContext->DrawPath(path);
- delete path;
}
void wxGCDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h,
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipticArc - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- wxCoord xx = LogicalToDeviceX(x);
- wxCoord yy = LogicalToDeviceY(y);
- wxCoord ww = m_signX * LogicalToDeviceXRel(w);
- wxCoord hh = m_signY * LogicalToDeviceYRel(h);
-
- // handle -ve width and/or height
- if (ww < 0)
- {
- ww = -ww;
- xx = xx - ww;
- }
- if (hh < 0)
- {
- hh = -hh;
- yy = yy - hh;
- }
-
- bool fill = m_brush.GetStyle() != wxTRANSPARENT;
-
- wxGraphicsPath* path = m_graphicContext->CreatePath();
+ wxGraphicsPath path = m_graphicContext->CreatePath();
m_graphicContext->PushState();
- m_graphicContext->Translate(xx+ww/2,yy+hh/2);
- wxDouble factor = ((wxDouble) ww) / hh;
+ 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, hh/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();
- delete path;
}
void wxGCDC::DoDrawPoint( wxCoord x, wxCoord y )
{
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)
{
- pointsD[i].m_x = LogicalToDeviceX(points[i].x + xoffset);
- pointsD[i].m_y = LogicalToDeviceY(points[i].y + yoffset);
+ pointsD[i].m_x = points[i].x + xoffset;
+ pointsD[i].m_y = points[i].y + yoffset;
}
m_graphicContext->StrokeLines( n , pointsD);
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawSpline - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- wxGraphicsPath* path = m_graphicContext->CreatePath();
+ wxGraphicsPath path = m_graphicContext->CreatePath();
wxList::compatibility_iterator node = points->GetFirst();
if (node == wxList::compatibility_iterator())
wxCoord cx1 = ( x1 + x2 ) / 2;
wxCoord cy1 = ( y1 + y2 ) / 2;
- path->MoveToPoint( LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) );
- path->AddLineToPoint( LogicalToDeviceX( cx1 ) , LogicalToDeviceY( cy1 ) );
+ path.MoveToPoint( x1 , y1 );
+ path.AddLineToPoint( cx1 , cy1 );
#if !wxUSE_STL
while ((node = node->GetNext()) != NULL)
wxCoord cx4 = (x1 + x2) / 2;
wxCoord cy4 = (y1 + y2) / 2;
- path->AddQuadCurveToPoint(
- LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) ,
- LogicalToDeviceX( cx4 ) , LogicalToDeviceY( cy4 ) );
+ path.AddQuadCurveToPoint(x1 , y1 ,cx4 , cy4 );
cx1 = cx4;
cy1 = cy4;
}
- path->AddLineToPoint( LogicalToDeviceX( x2 ) , LogicalToDeviceY( y2 ) );
+ path.AddLineToPoint( x2 , y2 );
m_graphicContext->StrokePath( path );
- delete path;
}
#endif // wxUSE_SPLINES
if ( n <= 0 || (m_brush.GetStyle() == wxTRANSPARENT && m_pen.GetStyle() == wxTRANSPARENT ) )
return;
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
bool closeIt = false;
wxPoint2DDouble* pointsD = new wxPoint2DDouble[n+(closeIt?1:0)];
for( int i = 0; i < n; ++i)
{
- pointsD[i].m_x = LogicalToDeviceX(points[i].x + xoffset);
- pointsD[i].m_y = LogicalToDeviceY(points[i].y + yoffset);
+ pointsD[i].m_x = points[i].x + xoffset;
+ pointsD[i].m_y = points[i].y + yoffset;
}
if ( closeIt )
pointsD[n] = pointsD[0];
int fillStyle)
{
wxASSERT(n > 1);
- wxGraphicsPath* path = m_graphicContext->CreatePath();
+ wxGraphicsPath path = m_graphicContext->CreatePath();
int i = 0;
for ( int j = 0; j < n; ++j)
{
wxPoint start = points[i];
- path->MoveToPoint(LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset));
+ path.MoveToPoint( start.x+ xoffset, start.y+ yoffset);
++i;
int l = count[j];
for ( int k = 1; k < l; ++k)
{
- path->AddLineToPoint( LogicalToDeviceX(points[i].x+ xoffset), LogicalToDeviceY(points[i].y+ yoffset));
+ path.AddLineToPoint( points[i].x+ xoffset, points[i].y+ yoffset);
++i;
}
// close the polygon
if ( start != points[i-1])
- path->AddLineToPoint( LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset));
+ path.AddLineToPoint( start.x+ xoffset, start.y+ yoffset);
}
m_graphicContext->DrawPath( path , fillStyle);
- delete path;
}
-void wxGCDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+void wxGCDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRectangle - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- wxCoord xx = LogicalToDeviceX(x);
- wxCoord yy = LogicalToDeviceY(y);
- wxCoord ww = m_signX * LogicalToDeviceXRel(width);
- wxCoord hh = m_signY * LogicalToDeviceYRel(height);
-
// CMB: draw nothing if transformed w or h is 0
- if (ww == 0 || hh == 0)
+ if (w == 0 || h == 0)
return;
- // CMB: handle -ve width and/or height
- if (ww < 0)
- {
- ww = -ww;
- xx = xx - ww;
- }
- if (hh < 0)
- {
- hh = -hh;
- yy = yy - hh;
- }
if ( m_graphicContext->ShouldOffset() )
{
// if we are offsetting the entire rectangle is moved 0.5, so the
// border line gets off by 1
- ww -= 1;
- hh -= 1;
+ w -= 1;
+ h -= 1;
}
- m_graphicContext->DrawRectangle( xx,yy,ww,hh);
+ m_graphicContext->DrawRectangle(x,y,w,h);
}
void wxGCDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y,
- wxCoord width, wxCoord height,
+ wxCoord w, wxCoord h,
double radius)
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRoundedRectangle - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
if (radius < 0.0)
- radius = - radius * ((width < height) ? width : height);
- wxCoord xx = LogicalToDeviceX(x);
- wxCoord yy = LogicalToDeviceY(y);
- wxCoord ww = m_signX * LogicalToDeviceXRel(width);
- wxCoord hh = m_signY * LogicalToDeviceYRel(height);
+ radius = - radius * ((w < h) ? w : h);
// CMB: draw nothing if transformed w or h is 0
- if (ww == 0 || hh == 0)
+ if (w == 0 || h == 0)
return;
- // CMB: handle -ve width and/or height
- if (ww < 0)
- {
- ww = -ww;
- xx = xx - ww;
- }
- if (hh < 0)
+ if ( m_graphicContext->ShouldOffset() )
{
- hh = -hh;
- yy = yy - hh;
+ // 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( xx,yy,ww,hh,radius);
+ m_graphicContext->DrawRoundedRectangle( x,y,w,h,radius);
}
-void wxGCDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+void wxGCDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipse - invalid DC") );
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- wxDouble xx = LogicalToDeviceX(x);
- wxDouble yy = LogicalToDeviceY(y);
- wxDouble ww = m_signX * LogicalToDeviceXRel(width);
- wxDouble hh = m_signY * LogicalToDeviceYRel(height);
-
- // CMB: draw nothing if transformed w or h is 0
- if (ww == 0 || hh == 0)
- return;
-
- // CMB: handle -ve width and/or height
- if (ww < 0)
- {
- ww = -ww;
- xx = xx - ww;
- }
- if (hh < 0)
+ if ( m_graphicContext->ShouldOffset() )
{
- hh = -hh;
- yy = yy - hh;
+ // 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(xx,yy,ww,hh);
+ m_graphicContext->DrawEllipse(x,y,w,h);
}
bool wxGCDC::CanDrawBitmap() const
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 )
+{
+ 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)::DoBlit - invalid DC") );
- wxCHECK_MSG( source->Ok(), false, wxT("wxGCDC(cg)::DoBlit - invalid source DC") );
+ 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 )
+ {
+ wxFAIL_MSG( wxT("Blitting is only supported with wxCOPY logical operation.") );
+ return false;
+ }
if (xsrcMask == -1 && ysrcMask == -1)
{
ysrcMask = ysrc;
}
- wxCoord yysrc = source-> LogicalToDeviceY(ysrc);
- wxCoord xxsrc = source-> LogicalToDeviceX(xsrc);
- wxCoord wwsrc = source-> LogicalToDeviceXRel(width);
- wxCoord hhsrc = source-> LogicalToDeviceYRel(height);
-
- wxCoord yydest = LogicalToDeviceY(ydest);
- wxCoord xxdest = LogicalToDeviceX(xdest);
- wxCoord wwdest = LogicalToDeviceXRel(width);
- wxCoord hhdest = LogicalToDeviceYRel(height);
-
- wxMemoryDC* memdc = wxDynamicCast(source,wxMemoryDC);
- if ( memdc && logical_func == wxCOPY )
- {
- wxBitmap blit = memdc->GetSelectedBitmap();
-
- wxASSERT_MSG( blit.Ok() , wxT("Invalid bitmap for blitting") );
+ wxRect subrect(source->LogicalToDeviceX(xsrc),
+ source->LogicalToDeviceY(ysrc),
+ source->LogicalToDeviceXRel(srcWidth),
+ source->LogicalToDeviceYRel(srcHeight));
- wxCoord bmpwidth = blit.GetWidth();
- wxCoord bmpheight = blit.GetHeight();
+ // 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;
- 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;
- }
- }
+ wxBitmap blit = source->GetAsBitmap( &subrect );
- if ( blit.Ok() )
- {
- m_graphicContext->DrawBitmap( blit, xxdest , yydest , wwdest , hhdest );
- }
+ if ( blit.Ok() )
+ {
+ m_graphicContext->DrawBitmap( blit, xdest, ydest,
+ dstWidth, dstHeight);
}
else
{
- wxFAIL_MSG( wxT("Blitting is only supported from bitmap contexts, and only with wxCOPY logical operation.") );
+ wxFAIL_MSG( wxT("Cannot Blit. Unable to get contents of DC as bitmap.") );
return false;
}
if ( str.length() == 0 )
return;
- if ( m_logicalFunction != wxCOPY )
+ if ( !m_logicalFunctionSupported )
return;
- int drawX = LogicalToDeviceX(x);
- int drawY = LogicalToDeviceY(y);
-
- m_graphicContext->DrawText( str, drawX ,drawY , 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 )
- return;
- int drawX = LogicalToDeviceX(x);
- int drawY = LogicalToDeviceY(y);
+ if ( !m_logicalFunctionSupported )
+ return;
- m_graphicContext->DrawText( str, drawX ,drawY);
+ 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
void wxGCDC::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *height,
wxCoord *descent, wxCoord *externalLeading ,
- wxFont *theFont ) const
+ const wxFont *theFont ) const
{
wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") );
m_graphicContext->GetTextExtent( str, &w, &h, &d, &e );
if ( height )
- *height = DeviceToLogicalYRel((wxCoord)h);
+ *height = (wxCoord)h;
if ( descent )
- *descent = DeviceToLogicalYRel((wxCoord)d);
+ *descent = (wxCoord)d;
if ( externalLeading )
- *externalLeading = DeviceToLogicalYRel((wxCoord)e);
+ *externalLeading = (wxCoord)e;
if ( width )
- *width = DeviceToLogicalXRel((wxCoord)w);
+ *width = (wxCoord)w;
if ( theFont )
{
m_graphicContext->GetPartialTextExtents( text, widthsD );
for ( size_t i = 0; i < widths.GetCount(); ++i )
- widths[i] = DeviceToLogicalXRel((wxCoord)(widthsD[i] + 0.5));
+ widths[i] = (wxCoord)(widthsD[i] + 0.5);
return true;
}
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 );
}
break;
}
- m_graphicContext->SetBrush( m_graphicContext->CreateLinearGradientBrush(
- LogicalToDeviceX(start.x),LogicalToDeviceY(start.y),
- LogicalToDeviceX(end.x),LogicalToDeviceY(end.y), initialColour, destColour));
-
- wxDouble xx = LogicalToDeviceX(rect.x);
- wxDouble yy = LogicalToDeviceY(rect.y);
- wxDouble ww = m_signX * LogicalToDeviceXRel(rect.width);
- wxDouble hh = m_signY * LogicalToDeviceYRel(rect.height);
-
- if (ww == 0 || hh == 0)
+ if (rect.width == 0 || rect.height == 0)
return;
- if (ww < 0)
- {
- ww = -ww;
- xx = xx - ww;
- }
- if (hh < 0)
- {
- hh = -hh;
- yy = yy - hh;
- }
-
+ m_graphicContext->SetBrush( m_graphicContext->CreateLinearGradientBrush(
+ start.x,start.y,end.x,end.y, initialColour, destColour));
m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
- m_graphicContext->DrawRectangle(xx,yy,ww,hh);
+ m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
m_graphicContext->SetPen(m_pen);
}
else
nRadius = cy;
- wxDouble xx = LogicalToDeviceX(rect.x);
- wxDouble yy = LogicalToDeviceY(rect.y);
- wxDouble ww = m_signX * LogicalToDeviceXRel(rect.width);
- wxDouble hh = m_signY * LogicalToDeviceYRel(rect.height);
-
- if (ww == 0 || hh == 0)
- return;
-
- if (ww < 0)
- {
- ww = -ww;
- xx = xx - ww;
- }
- if (hh < 0)
- {
- hh = -hh;
- yy = yy - hh;
- }
-
+ // make sure the background is filled (todo move into specific platform implementation ?)
m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
m_graphicContext->SetBrush( wxBrush( destColour) );
- m_graphicContext->DrawRectangle( xx,yy,ww,hh);
+ m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
m_graphicContext->SetBrush( m_graphicContext->CreateRadialGradientBrush(
- xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y),
- xx+LogicalToDeviceX(circleCenter.x),yy+LogicalToDeviceY(circleCenter.y),
- LogicalToDeviceXRel(nRadius),
- initialColour,destColour));
+ rect.x+circleCenter.x,rect.y+circleCenter.y,
+ rect.x+circleCenter.x,rect.y+circleCenter.y,
+ nRadius,initialColour,destColour));
- m_graphicContext->DrawRectangle( xx,yy,ww,hh);
+ m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
m_graphicContext->SetPen(m_pen);
}
projects / wxWidgets.git / blobdiff