From 1b89a5cd94246c473b73fea239ee8a6066d410da Mon Sep 17 00:00:00 2001 From: Stefan Csomor Date: Thu, 26 Oct 2006 06:07:29 +0000 Subject: [PATCH] move the graphics context bridge dc into separate file git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42425 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- src/common/dcgraph.cpp | 1156 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1156 insertions(+) create mode 100644 src/common/dcgraph.cpp diff --git a/src/common/dcgraph.cpp b/src/common/dcgraph.cpp new file mode 100644 index 0000000000..136775cbad --- /dev/null +++ b/src/common/dcgraph.cpp @@ -0,0 +1,1156 @@ +///////////////////////////////////////////////////////////////////////////// +// Name: src/common/graphcmn.cpp +// Purpose: graphics context methods common to all platforms +// Author: Stefan Csomor +// Modified by: +// Created: +// RCS-ID: $Id$ +// Copyright: (c) Stefan Csomor +// Licence: wxWindows licence +///////////////////////////////////////////////////////////////////////////// + +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.h" + +#if defined(__BORLANDC__) + #pragma hdrstop +#endif + +#if wxUSE_GRAPHICS_CONTEXT + +#include "wx/graphics.h" + +#ifndef WX_PRECOMP + #include "wx/icon.h" + #include "wx/bitmap.h" + #include "wx/dcmemory.h" + #include "wx/region.h" +#endif + +//----------------------------------------------------------------------------- +// constants +//----------------------------------------------------------------------------- + +static const double RAD2DEG = 180.0 / M_PI; + +//----------------------------------------------------------------------------- +// Local functions +//----------------------------------------------------------------------------- + +static inline double DegToRad(double deg) +{ + return (deg * M_PI) / 180.0; +} + +//----------------------------------------------------------------------------- +// wxDC bridge class +//----------------------------------------------------------------------------- + +#ifdef __WXMAC__ +IMPLEMENT_DYNAMIC_CLASS(wxGCDC, wxDCBase) +#else +IMPLEMENT_DYNAMIC_CLASS(wxGCDC, wxDC) +#endif + +wxGCDC::wxGCDC() +{ + Init(); +} + +void wxGCDC::SetGraphicsContext( wxGraphicsContext* ctx ) +{ + delete m_graphicContext; + m_graphicContext = ctx; +} + +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())); +} + +void wxGCDC::Init() +{ + m_ok = false; + m_colour = true; + m_mm_to_pix_x = mm2pt; + m_mm_to_pix_y = mm2pt; + + m_pen = *wxBLACK_PEN; + m_font = *wxNORMAL_FONT; + m_brush = *wxWHITE_BRUSH; + + m_graphicContext = NULL; +} + + +wxGCDC::~wxGCDC() +{ + delete m_graphicContext; +} + +void wxGCDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool WXUNUSED(useMask) ) +{ + 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 ); +} + +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 ); +} + +void wxGCDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoord height ) +{ + 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 ); + 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_clipX1 = xx; + m_clipY1 = yy; + m_clipX2 = xx + ww; + m_clipY2 = yy + hh; + } +} + +void wxGCDC::DoSetClippingRegionAsRegion( const wxRegion ®ion ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoSetClippingRegionAsRegion - invalid DC") ); + + if (region.Empty()) + { + DestroyClippingRegion(); + return; + } + + 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 ) + { + wxGCDC::DoSetClippingRegion( x, y, w, 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_clipX1 = xx; + m_clipY1 = yy; + m_clipX2 = xx + ww; + m_clipY2 = yy + hh; + } + } +} + +void wxGCDC::DestroyClippingRegion() +{ + m_graphicContext->ResetClip(); + m_graphicContext->SetPen( m_pen ); + m_graphicContext->SetBrush( m_brush ); + + m_clipping = false; +} + +void wxGCDC::DoGetSizeMM( int* width, int* height ) const +{ + int w = 0, h = 0; + + GetSize( &w, &h ); + if (width) + *width = long( double(w) / (m_scaleX * m_mm_to_pix_x) ); + if (height) + *height = long( double(h) / (m_scaleY * m_mm_to_pix_y) ); +} + +void wxGCDC::SetTextForeground( const wxColour &col ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") ); + + if ( col != m_textForegroundColour ) + { + m_textForegroundColour = col; + m_graphicContext->SetFont( m_font, m_textForegroundColour ); + } +} + +void wxGCDC::SetTextBackground( const wxColour &col ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::SetTextBackground - invalid DC") ); + + m_textBackgroundColour = col; +} + +void wxGCDC::SetMapMode( int mode ) +{ + switch (mode) + { + case wxMM_TWIPS: + SetLogicalScale( twips2mm * m_mm_to_pix_x, twips2mm * m_mm_to_pix_y ); + break; + + case wxMM_POINTS: + SetLogicalScale( pt2mm * m_mm_to_pix_x, pt2mm * m_mm_to_pix_y ); + break; + + case wxMM_METRIC: + SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y ); + break; + + case wxMM_LOMETRIC: + SetLogicalScale( m_mm_to_pix_x / 10.0, m_mm_to_pix_y / 10.0 ); + break; + + case wxMM_TEXT: + default: + SetLogicalScale( 1.0, 1.0 ); + break; + } + + ComputeScaleAndOrigin(); +} + +void wxGCDC::SetUserScale( double x, double y ) +{ + // allow negative ? -> no + + m_userScaleX = x; + m_userScaleY = y; + ComputeScaleAndOrigin(); +} + +void wxGCDC::SetLogicalScale( double x, double y ) +{ + // allow negative ? + m_logicalScaleX = x; + m_logicalScaleY = y; + ComputeScaleAndOrigin(); +} + +void wxGCDC::SetLogicalOrigin( wxCoord x, wxCoord y ) +{ + m_logicalOriginX = x * m_signX; // is this still correct ? + m_logicalOriginY = y * m_signY; + ComputeScaleAndOrigin(); +} + +void wxGCDC::SetDeviceOrigin( wxCoord x, wxCoord y ) +{ + m_deviceOriginX = x; + m_deviceOriginY = y; + ComputeScaleAndOrigin(); +} + +void wxGCDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) +{ + m_signX = (xLeftRight ? 1 : -1); + m_signY = (yBottomUp ? -1 : 1); + ComputeScaleAndOrigin(); +} + +wxSize wxGCDC::GetPPI() const +{ + return wxSize(72, 72); +} + +int wxGCDC::GetDepth() const +{ + return 32; +} + +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) + { + // 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); + } +} + +void wxGCDC::SetPalette( const wxPalette& WXUNUSED(palette) ) +{ + +} + +void wxGCDC::SetBackgroundMode( int mode ) +{ + m_backgroundMode = mode; +} + +void wxGCDC::SetFont( const wxFont &font ) +{ + m_font = font; + if ( m_graphicContext ) + { + wxFont f = font; + if ( f.Ok() ) + f.SetPointSize( LogicalToDeviceYRel(font.GetPointSize())); + m_graphicContext->SetFont( f, m_textForegroundColour ); + } +} + +void wxGCDC::SetPen( const wxPen &pen ) +{ + if ( m_pen == pen ) + return; + + 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 ); + } + } +} + +void wxGCDC::SetBrush( const wxBrush &brush ) +{ + if (m_brush == brush) + return; + + 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 ); + } + } +} + +void wxGCDC::SetBackground( const wxBrush &brush ) +{ + if (m_backgroundBrush == brush) + return; + + m_backgroundBrush = brush; + if (!m_backgroundBrush.Ok()) + return; +} + +void wxGCDC::SetLogicalFunction( int function ) +{ + if (m_logicalFunction == function) + 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 ); + else + CGContextSetBlendMode( cgContext, kCGBlendModeNormal ); +#endif + +} + +bool wxGCDC::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), + const wxColour& WXUNUSED(col), int WXUNUSED(style)) +{ + return false; +} + +bool wxGCDC::DoGetPixel( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxColour *WXUNUSED(col) ) const +{ + // wxCHECK_MSG( 0 , false, wxT("wxGCDC(cg)::DoGetPixel - not implemented") ); + return false; +} + +void wxGCDC::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLine - invalid DC") ); + +#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES + + if ( m_logicalFunction != wxCOPY ) + 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); + + CalcBoundingBox(x1, y1); + CalcBoundingBox(x2, y2); +} + +void wxGCDC::DoCrossHair( wxCoord x, wxCoord y ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + 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(x0,yy,xw,yy); + m_graphicContext->StrokeLine(xx,y0,xx,yh); + + CalcBoundingBox(x0, y0); + CalcBoundingBox(x0+xw, y0+yh); +} + +void wxGCDC::DoDrawArc( wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord xc, wxCoord yc ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + 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 radius = sqrt((double)(dx * dx + dy * dy)); + wxCoord rad = (wxCoord)radius; + double sa, ea; + if (xx1 == xx2 && yy1 == yy2) + { + sa = 0.0; + ea = 360.0; + } + else if (radius == 0.0) + { + sa = ea = 0.0; + } + 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; + } + + bool fill = m_brush.GetStyle() != wxTRANSPARENT; + + 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 ); + if ( fill && ((x1!=x2)||(y1!=y2)) ) + path->AddLineToPoint( xxc, yyc ); + m_graphicContext->DrawPath(path); + delete path; +} + +void wxGCDC::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h, + double sa, double ea ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipticArc - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + 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(); + m_graphicContext->PushState(); + m_graphicContext->Translate(xx+ww/2,yy+hh/2); + wxDouble factor = ((wxDouble) ww) / hh; + 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); + m_graphicContext->DrawPath( path ); + m_graphicContext->PopState(); + delete path; +} + +void wxGCDC::DoDrawPoint( wxCoord x, wxCoord y ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPoint - invalid DC") ); + + DoDrawLine( x , y , x + 1 , y + 1 ); +} + +void wxGCDC::DoDrawLines(int n, wxPoint points[], + wxCoord xoffset, wxCoord yoffset) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawLines - invalid DC") ); + +#if !wxMAC_USE_CORE_GRAPHICS_BLEND_MODES + + if ( m_logicalFunction != wxCOPY ) + 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); + } + + m_graphicContext->StrokeLines( n , pointsD); + delete[] pointsD; +} + +#if wxUSE_SPLINES +void wxGCDC::DoDrawSpline(wxList *points) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawSpline - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + return; + + wxGraphicsPath* path = m_graphicContext->CreatePath(); + + wxList::compatibility_iterator node = points->GetFirst(); + if (node == wxList::compatibility_iterator()) + // empty list + return; + + wxPoint *p = (wxPoint *)node->GetData(); + + wxCoord x1 = p->x; + wxCoord y1 = p->y; + + node = node->GetNext(); + p = (wxPoint *)node->GetData(); + + wxCoord x2 = p->x; + wxCoord y2 = p->y; + wxCoord cx1 = ( x1 + x2 ) / 2; + wxCoord cy1 = ( y1 + y2 ) / 2; + + path->MoveToPoint( LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) ); + path->AddLineToPoint( LogicalToDeviceX( cx1 ) , LogicalToDeviceY( cy1 ) ); +#if !wxUSE_STL + + while ((node = node->GetNext()) != NULL) +#else + + while ((node = node->GetNext())) +#endif // !wxUSE_STL + + { + p = (wxPoint *)node->GetData(); + x1 = x2; + y1 = y2; + x2 = p->x; + y2 = p->y; + wxCoord cx4 = (x1 + x2) / 2; + wxCoord cy4 = (y1 + y2) / 2; + + path->AddQuadCurveToPoint( + LogicalToDeviceX( x1 ) , LogicalToDeviceY( y1 ) , + LogicalToDeviceX( cx4 ) , LogicalToDeviceY( cy4 ) ); + + cx1 = cx4; + cy1 = cy4; + } + + path->AddLineToPoint( LogicalToDeviceX( x2 ) , LogicalToDeviceY( y2 ) ); + + m_graphicContext->StrokePath( path ); + delete path; +} +#endif // wxUSE_SPLINES + +void wxGCDC::DoDrawPolygon( int n, wxPoint points[], + wxCoord xoffset, wxCoord yoffset, + int fillStyle ) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawPolygon - invalid DC") ); + + if ( n <= 0 || (m_brush.GetStyle() == wxTRANSPARENT && m_pen.GetStyle() == wxTRANSPARENT ) ) + return; + if ( m_logicalFunction != wxCOPY ) + return; + + bool closeIt = false; + if (points[n-1] != points[0]) + closeIt = true; + + 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); + } + if ( closeIt ) + pointsD[n] = pointsD[0]; + + m_graphicContext->DrawLines( n+(closeIt?1:0) , pointsD, fillStyle); + delete[] pointsD; +} + +void wxGCDC::DoDrawPolyPolygon(int n, + int count[], + wxPoint points[], + wxCoord xoffset, + wxCoord yoffset, + int fillStyle) +{ + wxASSERT(n > 1); + 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)); + ++i; + int l = count[j]; + for ( int k = 1; k < l; ++k) + { + path->AddLineToPoint( LogicalToDeviceX(points[i].x+ xoffset), LogicalToDeviceY(points[i].y+ yoffset)); + ++i; + } + // close the polygon + if ( start != points[i-1]) + path->AddLineToPoint( LogicalToDeviceX(start.x+ xoffset), LogicalToDeviceY(start.y+ yoffset)); + } + m_graphicContext->DrawPath( path , fillStyle); + delete path; +} + +void wxGCDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRectangle - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + 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) + return; + + // CMB: handle -ve width and/or height + if (ww < 0) + { + ww = -ww; + xx = xx - ww; + } + if (hh < 0) + { + hh = -hh; + yy = yy - hh; + } + m_graphicContext->DrawRectangle( xx,yy,ww,hh); +} + +void wxGCDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, + wxCoord width, wxCoord height, + double radius) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRoundedRectangle - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + 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); + + // 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) + { + hh = -hh; + yy = yy - hh; + } + + m_graphicContext->DrawRoundedRectangle( xx,yy,ww,hh,radius); +} + +void wxGCDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawEllipse - invalid DC") ); + + if ( m_logicalFunction != wxCOPY ) + 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) + { + hh = -hh; + yy = yy - hh; + } + + m_graphicContext->DrawEllipse(xx,yy,ww,hh); +} + +bool wxGCDC::CanDrawBitmap() const +{ + return true; +} + +bool wxGCDC::DoBlit( + wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, + wxDC *source, wxCoord xsrc, wxCoord ysrc, 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") ); + + if ( logical_func == wxNO_OP ) + return true; + + if (xsrcMask == -1 && ysrcMask == -1) + { + xsrcMask = xsrc; + 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") ); + + wxCoord bmpwidth = blit.GetWidth(); + wxCoord bmpheight = blit.GetHeight(); + + 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; + } + } + + if ( blit.Ok() ) + { + m_graphicContext->DrawBitmap( blit, xxdest , yydest , wwdest , hhdest ); + } + } + else + { + wxFAIL_MSG( wxT("Blitting is only supported from bitmap contexts, and only with wxCOPY logical operation.") ); + return false; + } + + return true; +} + +void wxGCDC::DoDrawRotatedText(const wxString& str, wxCoord x, wxCoord y, + double angle) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") ); + + if ( str.length() == 0 ) + return; + if ( m_logicalFunction != wxCOPY ) + return; + + int drawX = LogicalToDeviceX(x); + int drawY = LogicalToDeviceY(y); + + m_graphicContext->DrawText( str, drawX ,drawY , DegToRad(angle )); +} + +void wxGCDC::DoDrawText(const wxString& str, wxCoord x, wxCoord y) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") ); + + if ( str.length() == 0 ) + return; + if ( m_logicalFunction != wxCOPY ) + return; + + int drawX = LogicalToDeviceX(x); + int drawY = LogicalToDeviceY(y); + + m_graphicContext->DrawText( str, drawX ,drawY); +} + +bool wxGCDC::CanGetTextExtent() const +{ + wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::CanGetTextExtent - invalid DC") ); + + return true; +} + +void wxGCDC::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *height, + wxCoord *descent, wxCoord *externalLeading , + wxFont *theFont ) const +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") ); + + if ( theFont ) + { + m_graphicContext->SetFont( *theFont, m_textForegroundColour ); + } + + wxDouble h , d , e , w; + + m_graphicContext->GetTextExtent( str, &w, &h, &d, &e ); + + if ( height ) + *height = DeviceToLogicalYRel((wxCoord)h); + if ( descent ) + *descent = DeviceToLogicalYRel((wxCoord)d); + if ( externalLeading ) + *externalLeading = DeviceToLogicalYRel((wxCoord)e); + if ( width ) + *width = DeviceToLogicalXRel((wxCoord)w); + + if ( theFont ) + { + m_graphicContext->SetFont( m_font, m_textForegroundColour ); + } +} + +bool wxGCDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const +{ + wxCHECK_MSG( Ok(), false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") ); + widths.Clear(); + widths.Add(0,text.Length()); + if ( text.IsEmpty() ) + return true; + + wxArrayDouble widthsD; + + m_graphicContext->GetPartialTextExtents( text, widthsD ); + for ( size_t i = 0; i < widths.GetCount(); ++i ) + widths[i] = DeviceToLogicalXRel((wxCoord)(widthsD[i] + 0.5)); + + return true; +} + +wxCoord wxGCDC::GetCharWidth(void) const +{ + wxCoord width; + DoGetTextExtent( wxT("g") , &width , NULL , NULL , NULL , NULL ); + + return width; +} + +wxCoord wxGCDC::GetCharHeight(void) const +{ + wxCoord height; + DoGetTextExtent( wxT("g") , NULL , &height , NULL , NULL , NULL ); + + return height; +} + +void wxGCDC::Clear(void) +{ + wxCHECK_RET( Ok(), wxT("wxGCDC(cg)::Clear - invalid DC") ); + // TODO better implementation / incorporate size info into wxGCDC or context + m_graphicContext->SetBrush( m_backgroundBrush ); + wxPen p = *wxTRANSPARENT_PEN; + m_graphicContext->SetPen( p ); + DoDrawRectangle( 0, 0, 32000 , 32000 ); + m_graphicContext->SetPen( m_pen ); + m_graphicContext->SetBrush( m_brush ); +} + +void wxGCDC::DoGetSize(int *width, int *height) const +{ + *width = 1000; + *height = 1000; +} + +void wxGCDC::DoGradientFillLinear(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection ) +{ + wxPoint start; + wxPoint end; + switch( nDirection) + { + case wxWEST : + start = rect.GetRightBottom(); + start.x++; + end = rect.GetLeftBottom(); + break; + case wxEAST : + start = rect.GetLeftBottom(); + end = rect.GetRightBottom(); + end.x++; + break; + case wxNORTH : + start = rect.GetLeftBottom(); + start.y++; + end = rect.GetLeftTop(); + break; + case wxSOUTH : + start = rect.GetLeftTop(); + end = rect.GetLeftBottom(); + end.y++; + break; + default : + 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) + return; + + if (ww < 0) + { + ww = -ww; + xx = xx - ww; + } + if (hh < 0) + { + hh = -hh; + yy = yy - hh; + } + + m_graphicContext->SetPen(*wxTRANSPARENT_PEN); + m_graphicContext->DrawRectangle(xx,yy,ww,hh); + m_graphicContext->SetPen(m_pen); +} + +void wxGCDC::DoGradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + const wxPoint& circleCenter) +{ + //Radius + wxInt32 cx = rect.GetWidth() / 2; + wxInt32 cy = rect.GetHeight() / 2; + wxInt32 nRadius; + if (cx < cy) + nRadius = cx; + 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; + } + + m_graphicContext->SetPen(*wxTRANSPARENT_PEN); + m_graphicContext->SetBrush( wxBrush( destColour) ); + m_graphicContext->DrawRectangle( xx,yy,ww,hh); + + 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)); + + m_graphicContext->DrawRectangle( xx,yy,ww,hh); + m_graphicContext->SetPen(m_pen); +} + +void wxGCDC::DoDrawCheckMark(wxCoord x, wxCoord y, + wxCoord width, wxCoord height) +{ + wxDCBase::DoDrawCheckMark(x,y,width,height); +} + +#endif // wxUSE_GRAPHICS_CONTEXT -- 2.47.2