X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/957ea55146a1dd3e29ea803936527344672a947f..54e280d8601f48d80bc2fc1d882b43a5f664c999:/src/common/dcbase.cpp diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp index e0b7d7a41b..807c0cae30 100644 --- a/src/common/dcbase.cpp +++ b/src/common/dcbase.cpp @@ -30,33 +30,69 @@ #include "wx/dcscreen.h" #include "wx/dcprint.h" #include "wx/prntbase.h" +#include "wx/scopeguard.h" #ifndef WX_PRECOMP #include "wx/math.h" + #include "wx/module.h" #endif #ifdef __WXMSW__ -#include "wx/msw/dcclient.h" -#include "wx/msw/dcmemory.h" -#include "wx/msw/dcscreen.h" + #include "wx/msw/dcclient.h" + #include "wx/msw/dcmemory.h" + #include "wx/msw/dcscreen.h" #endif -#ifdef __WXGTK__ -#include "wx/gtk/dcclient.h" -#include "wx/gtk/dcmemory.h" -#include "wx/gtk/dcscreen.h" +#ifdef __WXGTK20__ + #include "wx/gtk/dcclient.h" + #include "wx/gtk/dcmemory.h" + #include "wx/gtk/dcscreen.h" +#elif defined(__WXGTK__) + #include "wx/gtk1/dcclient.h" + #include "wx/gtk1/dcmemory.h" + #include "wx/gtk1/dcscreen.h" #endif #ifdef __WXMAC__ -#include "wx/mac/dcclient.h" -#include "wx/mac/dcmemory.h" -#include "wx/mac/dcscreen.h" + #include "wx/osx/dcclient.h" + #include "wx/osx/dcmemory.h" + #include "wx/osx/dcscreen.h" +#endif + +#ifdef __WXPM__ + #include "wx/os2/dcclient.h" + #include "wx/os2/dcmemory.h" + #include "wx/os2/dcscreen.h" +#endif + +#ifdef __WXCOCOA__ + #include "wx/cocoa/dcclient.h" + #include "wx/cocoa/dcmemory.h" + #include "wx/cocoa/dcscreen.h" +#endif + +#ifdef __WXMOTIF__ + #include "wx/motif/dcclient.h" + #include "wx/motif/dcmemory.h" + #include "wx/motif/dcscreen.h" #endif #ifdef __WXX11__ -#include "wx/x11/dcclient.h" -#include "wx/x11/dcmemory.h" -#include "wx/x11/dcscreen.h" + #include "wx/x11/dcclient.h" + #include "wx/x11/dcmemory.h" + #include "wx/x11/dcscreen.h" +#endif + +#ifdef __WXDFB__ + #include "wx/dfb/dcclient.h" + #include "wx/dfb/dcmemory.h" + #include "wx/dfb/dcscreen.h" +#endif + +#ifdef __WXPALMOS__ + #include "wx/palmos/dcclient.h" + #include "wx/palmos/dcmemory.h" + #include "wx/palmos/dcscreen.h" #endif //---------------------------------------------------------------------------- @@ -65,54 +101,56 @@ wxDCFactory *wxDCFactory::m_factory = NULL; -void wxDCFactory::SetDCFactory( wxDCFactory *factory ) +void wxDCFactory::Set(wxDCFactory *factory) { - if (wxDCFactory::m_factory) - delete wxDCFactory::m_factory; + delete m_factory; - wxDCFactory::m_factory = factory; + m_factory = factory; } -wxDCFactory *wxDCFactory::GetFactory() +wxDCFactory *wxDCFactory::Get() { - if (!wxDCFactory::m_factory) - wxDCFactory::m_factory = new wxNativeDCFactory; + if ( !m_factory ) + m_factory = new wxNativeDCFactory; - return wxDCFactory::m_factory; + return m_factory; } +class wxDCFactoryCleanupModule : public wxModule +{ +public: + virtual bool OnInit() { return true; } + virtual void OnExit() { wxDCFactory::Set(NULL); } + +private: + DECLARE_DYNAMIC_CLASS(wxDCFactoryCleanupModule) +}; + +IMPLEMENT_DYNAMIC_CLASS(wxDCFactoryCleanupModule, wxModule) + //----------------------------------------------------------------------------- // wxNativeDCFactory //----------------------------------------------------------------------------- -wxDCImpl* wxNativeDCFactory::CreateWindowDC( wxWindowDC *owner ) -{ - return new wxWindowDCImpl( owner ); -} - wxDCImpl* wxNativeDCFactory::CreateWindowDC( wxWindowDC *owner, wxWindow *window ) -{ - return new wxWindowDCImpl( owner, window ); -} - -wxDCImpl* wxNativeDCFactory::CreateClientDC( wxClientDC *owner ) { - return new wxClientDCImpl( owner ); + wxDCImpl * const impl = new wxWindowDCImpl( owner, window ); + impl->InheritAttributes(window); + return impl; } wxDCImpl* wxNativeDCFactory::CreateClientDC( wxClientDC *owner, wxWindow *window ) { - return new wxClientDCImpl( owner, window ); -} - -wxDCImpl* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner ) -{ - return new wxPaintDCImpl( owner ); + wxDCImpl * const impl = new wxClientDCImpl( owner, window ); + impl->InheritAttributes(window); + return impl; } wxDCImpl* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner, wxWindow *window ) { - return new wxPaintDCImpl( owner, window ); + wxDCImpl * const impl = new wxPaintDCImpl( owner, window ); + impl->InheritAttributes(window); + return impl; } wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner ) @@ -120,9 +158,19 @@ wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner ) return new wxMemoryDCImpl( owner ); } -wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) +wxDCImpl* wxNativeDCFactory::CreateMemoryDC(wxMemoryDC *owner, wxBitmap& bitmap) { - return new wxMemoryDCImpl( owner, bitmap ); + // the bitmap may be modified when it's selected into a memory DC so make + // sure changing this bitmap doesn't affect any other shallow copies of it + // (see wxMemoryDC::SelectObject()) + // + // notice that we don't provide any ctor equivalent to SelectObjectAsSource + // method because this should be rarely needed and easy to work around by + // using the default ctor and calling SelectObjectAsSource itself + if ( bitmap.IsOk() ) + bitmap.UnShare(); + + return new wxMemoryDCImpl(owner, bitmap); } wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) @@ -147,34 +195,24 @@ wxDCImpl *wxNativeDCFactory::CreatePrinterDC( wxPrinterDC *owner, const wxPrintD // wxWindowDC //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC) - -wxWindowDC::wxWindowDC() -{ -} +IMPLEMENT_ABSTRACT_CLASS(wxWindowDC, wxDC) -wxWindowDC::wxWindowDC( wxWindow *win ) +wxWindowDC::wxWindowDC(wxWindow *win) + : wxDC(wxDCFactory::Get()->CreateWindowDC(this, win)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateWindowDC( this, win ); } //----------------------------------------------------------------------------- // wxClientDC //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC) +IMPLEMENT_ABSTRACT_CLASS(wxClientDC, wxWindowDC) -wxClientDC::wxClientDC() +wxClientDC::wxClientDC(wxWindow *win) + : wxWindowDC(wxDCFactory::Get()->CreateClientDC(this, win)) { } -wxClientDC::wxClientDC( wxWindow *win ) -{ - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateClientDC( this, win ); -} - //----------------------------------------------------------------------------- // wxMemoryDC //----------------------------------------------------------------------------- @@ -182,21 +220,18 @@ wxClientDC::wxClientDC( wxWindow *win ) IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC) wxMemoryDC::wxMemoryDC() + : wxDC(wxDCFactory::Get()->CreateMemoryDC(this)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateMemoryDC( this ); } -wxMemoryDC::wxMemoryDC( wxBitmap& bitmap ) +wxMemoryDC::wxMemoryDC(wxBitmap& bitmap) + : wxDC(wxDCFactory::Get()->CreateMemoryDC(this, bitmap)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateMemoryDC( this, bitmap ); } -wxMemoryDC::wxMemoryDC( wxDC *dc ) +wxMemoryDC::wxMemoryDC(wxDC *dc) + : wxDC(wxDCFactory::Get()->CreateMemoryDC(this, dc)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateMemoryDC( this, dc ); } void wxMemoryDC::SelectObject(wxBitmap& bmp) @@ -225,23 +260,18 @@ wxBitmap& wxMemoryDC::GetSelectedBitmap() return GetImpl()->GetSelectedBitmap(); } - + //----------------------------------------------------------------------------- // wxPaintDC //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC) +IMPLEMENT_ABSTRACT_CLASS(wxPaintDC, wxClientDC) -wxPaintDC::wxPaintDC() +wxPaintDC::wxPaintDC(wxWindow *win) + : wxClientDC(wxDCFactory::Get()->CreatePaintDC(this, win)) { } -wxPaintDC::wxPaintDC( wxWindow *win ) -{ - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreatePaintDC( this, win ); -} - //----------------------------------------------------------------------------- // wxScreenDC //----------------------------------------------------------------------------- @@ -249,9 +279,8 @@ wxPaintDC::wxPaintDC( wxWindow *win ) IMPLEMENT_DYNAMIC_CLASS(wxScreenDC, wxWindowDC) wxScreenDC::wxScreenDC() + : wxDC(wxDCFactory::Get()->CreateScreenDC(this)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateScreenDC( this ); } //----------------------------------------------------------------------------- @@ -263,33 +292,26 @@ wxScreenDC::wxScreenDC() IMPLEMENT_DYNAMIC_CLASS(wxPrinterDC, wxDC) wxPrinterDC::wxPrinterDC() + : wxDC(wxDCFactory::Get()->CreatePrinterDC(this, wxPrintData())) { - wxPrintData data; // Does this make sense? - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreatePrinterDC( this, data ); -} - -wxPrinterDC::wxPrinterDC( const wxPrintData &data ) -{ - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreatePrinterDC( this, data ); } -wxPrinterDC::~wxPrinterDC() +wxPrinterDC::wxPrinterDC(const wxPrintData& data) + : wxDC(wxDCFactory::Get()->CreatePrinterDC(this, data)) { } -wxRect wxPrinterDC::GetPaperRect() +wxRect wxPrinterDC::GetPaperRect() const { return GetImpl()->GetPaperRect(); } -int wxPrinterDC::GetResolution() +int wxPrinterDC::GetResolution() const { return GetImpl()->GetResolution(); } -#endif +#endif // wxUSE_PRINTING_ARCHITECTURE //----------------------------------------------------------------------------- // wxDCImpl @@ -314,11 +336,11 @@ wxDCImpl::wxDCImpl( wxDC *owner ) , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0) , m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0) , m_logicalFunction(wxCOPY) - , m_backgroundMode(wxTRANSPARENT) + , m_backgroundMode(wxBRUSHSTYLE_TRANSPARENT) , m_mappingMode(wxMM_TEXT) , m_pen() , m_brush() - , m_backgroundBrush(*wxTRANSPARENT_BRUSH) + , m_backgroundBrush() , m_textForegroundColour(*wxBLACK) , m_textBackgroundColour(*wxWHITE) , m_font() @@ -333,7 +355,7 @@ wxDCImpl::wxDCImpl( wxDC *owner ) (double)wxGetDisplaySizeMM().GetWidth(); m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / (double)wxGetDisplaySizeMM().GetHeight(); - + ResetBoundingBox(); ResetClipping(); } @@ -348,12 +370,12 @@ wxDCImpl::~wxDCImpl() wxCoord wxDCImpl::DeviceToLogicalX(wxCoord x) const { - return wxRound((double)(x - m_deviceOriginX - m_deviceLocalOriginX) / m_scaleX) * m_signX + m_logicalOriginX; + return wxRound( (double)((x - m_deviceOriginX - m_deviceLocalOriginX) * m_signX) / m_scaleX ) + m_logicalOriginX ; } wxCoord wxDCImpl::DeviceToLogicalY(wxCoord y) const { - return wxRound((double)(y - m_deviceOriginY - m_deviceLocalOriginY) / m_scaleY) * m_signY + m_logicalOriginY; + return wxRound( (double)((y - m_deviceOriginY - m_deviceLocalOriginY) * m_signY) / m_scaleY ) + m_logicalOriginY ; } wxCoord wxDCImpl::DeviceToLogicalXRel(wxCoord x) const @@ -368,12 +390,12 @@ wxCoord wxDCImpl::DeviceToLogicalYRel(wxCoord y) const wxCoord wxDCImpl::LogicalToDeviceX(wxCoord x) const { - return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX * m_signY + m_deviceLocalOriginX; + return wxRound( (double)((x - m_logicalOriginX) * m_signX) * m_scaleX) + m_deviceOriginX + m_deviceLocalOriginX; } wxCoord wxDCImpl::LogicalToDeviceY(wxCoord y) const { - return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY * m_signY + m_deviceLocalOriginY; + return wxRound( (double)((y - m_logicalOriginY) * m_signY) * m_scaleY) + m_deviceOriginY + m_deviceLocalOriginY; } wxCoord wxDCImpl::LogicalToDeviceXRel(wxCoord x) const @@ -392,7 +414,7 @@ void wxDCImpl::ComputeScaleAndOrigin() m_scaleY = m_logicalScaleY * m_userScaleY; } -void wxDCImpl::SetMapMode( int mode ) +void wxDCImpl::SetMapMode( wxMappingMode mode ) { switch (mode) { @@ -548,7 +570,7 @@ void wxDCImpl::GetMultiLineTextExtent(const wxString& text, wxString curLine; for ( wxString::const_iterator pc = text.begin(); ; ++pc ) { - if ( pc == text.end() || *pc == _T('\n') ) + if ( pc == text.end() || *pc == wxT('\n') ) { if ( curLine.empty() ) { @@ -564,7 +586,7 @@ void wxDCImpl::GetMultiLineTextExtent(const wxString& text, if ( !heightLineDefault ) { // but we don't know it yet - choose something reasonable - DoGetTextExtent(_T("W"), NULL, &heightLineDefault, + DoGetTextExtent(wxT("W"), NULL, &heightLineDefault, NULL, NULL, font); } @@ -629,13 +651,13 @@ wxDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest, wxDC *source, wxCoord xsrc, wxCoord ysrc, wxCoord srcWidth, wxCoord srcHeight, - int rop, + wxRasterOperationMode rop, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) { wxCHECK_MSG( srcWidth && srcHeight && dstWidth && dstHeight, false, - _T("invalid blit size") ); + wxT("invalid blit size") ); // emulate the stretching by modifying the DC scale double xscale = (double)srcWidth/dstWidth, @@ -675,7 +697,7 @@ void wxDCImpl::DrawLines(const wxPointList *list, wxCoord xoffset, wxCoord yoffs void wxDCImpl::DrawPolygon(const wxPointList *list, wxCoord xoffset, wxCoord yoffset, - int fillStyle) + wxPolygonFillMode fillStyle) { int n = list->GetCount(); wxPoint *points = new wxPoint[n]; @@ -698,7 +720,7 @@ wxDCImpl::DoDrawPolyPolygon(int n, int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, - int fillStyle) + wxPolygonFillMode fillStyle) { if ( n == 1 ) { @@ -725,7 +747,7 @@ wxDCImpl::DoDrawPolyPolygon(int n, } pen = GetPen(); - SetPen(wxPen(*wxBLACK, 0, wxTRANSPARENT)); + SetPen(wxPen(*wxBLACK, 0, wxPENSTYLE_TRANSPARENT)); DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle); SetPen(pen); for (i = j = 0; i < n; i++) @@ -738,38 +760,21 @@ wxDCImpl::DoDrawPolyPolygon(int n, #if wxUSE_SPLINES -void wxDCImpl::DoDrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3) +void wxDCImpl::DrawSpline(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord x3, wxCoord y3) { - wxPointList point_list; - - wxPoint *point1 = new wxPoint; - point1->x = x1; point1->y = y1; - point_list.Append( point1 ); - - wxPoint *point2 = new wxPoint; - point2->x = x2; point2->y = y2; - point_list.Append( point2 ); - - wxPoint *point3 = new wxPoint; - point3->x = x3; point3->y = y3; - point_list.Append( point3 ); - - DoDrawSpline(&point_list); - - for( wxPointList::compatibility_iterator node = point_list.GetFirst(); node; node = node->GetNext() ) - { - wxPoint *p = node->GetData(); - delete p; - } + wxPoint points[] = { wxPoint(x1, y1), wxPoint(x2, y2), wxPoint(x3, y3) }; + DrawSpline(WXSIZEOF(points), points); } -void wxDCImpl::DoDrawSpline(int n, wxPoint points[]) +void wxDCImpl::DrawSpline(int n, wxPoint points[]) { wxPointList list; - for (int i =0; i < n; i++) - list.Append( &points[i] ); + for ( int i = 0; i < n; i++ ) + list.Append(&points[i]); - DoDrawSpline(&list); + DrawSpline(&list); } // ----------------------------------- spline code ---------------------------------------- @@ -784,7 +789,7 @@ void wx_spline_push(double x1, double y1, double x2, double y2, double x3, doubl static bool wx_spline_add_point(double x, double y); static void wx_spline_draw_point_array(wxDC *dc); -wxPointList wx_spline_point_list; +static wxPointList wx_spline_point_list; #define half(z1, z2) ((z1+z2)/2.0) #define THRESHOLD 5 @@ -993,7 +998,7 @@ void wxDCImpl::DoGradientFillLinear(const wxRect& rect, nB = nB1 + (nB2-nB1)*(w-x)/w; wxColour colour(nR,nG,nB); - SetPen(wxPen(colour, 1, wxSOLID)); + SetPen(wxPen(colour, 1, wxPENSTYLE_SOLID)); SetBrush(wxBrush(colour)); if(nDirection == wxEAST) DoDrawRectangle(rect.GetRight()-x-xDelta+1, rect.GetTop(), @@ -1030,7 +1035,7 @@ void wxDCImpl::DoGradientFillLinear(const wxRect& rect, nB = nB1 + (nB2-nB1)*(w-y)/w; wxColour colour(nR,nG,nB); - SetPen(wxPen(colour, 1, wxSOLID)); + SetPen(wxPen(colour, 1, wxPENSTYLE_SOLID)); SetBrush(wxBrush(colour)); if(nDirection == wxNORTH) DoDrawRectangle(rect.GetLeft(), rect.GetTop()+y, @@ -1050,8 +1055,9 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, const wxColour& destColour, const wxPoint& circleCenter) { - //save the old pen color - wxColour oldPenColour = m_pen.GetColour(); + // save the old pen and ensure it is restored on exit + const wxPen penOrig = m_pen; + wxON_BLOCK_EXIT_SET(m_pen, penOrig); wxUint8 nR1 = destColour.Red(); wxUint8 nG1 = destColour.Green(); @@ -1096,12 +1102,21 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100)); //set the pixel - m_pen.SetColour(wxColour(nR,nG,nB)); + m_pen = wxColour(nR,nG,nB); DoDrawPoint(x + rect.GetLeft(), y + rect.GetTop()); } } - //return old pen color - m_pen.SetColour(oldPenColour); +} + +void wxDCImpl::InheritAttributes(wxWindow *win) +{ + wxCHECK_RET( win, "window can't be NULL" ); + + SetFont(win->GetFont()); + SetTextForeground(win->GetForegroundColour()); + SetTextBackground(win->GetBackgroundColour()); + SetBackground(win->GetBackgroundColour()); + SetLayoutDirection(win->GetLayoutDirection()); } //----------------------------------------------------------------------------- @@ -1110,6 +1125,15 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject) +void wxDC::CopyAttributes(const wxDC& dc) +{ + SetFont(dc.GetFont()); + SetTextForeground(dc.GetTextForeground()); + SetTextBackground(dc.GetTextBackground()); + SetBackground(dc.GetBackground()); + SetLayoutDirection(dc.GetLayoutDirection()); +} + void wxDC::DrawLabel(const wxString& text, const wxBitmap& bitmap, const wxRect& rect, @@ -1181,10 +1205,16 @@ void wxDC::DrawLabel(const wxString& text, yUnderscore = 0; // split the string into lines and draw each of them separately + // + // NB: while wxDC::DrawText() on some platforms supports drawing multi-line + // strings natively, this is not the case for all of them, notably not + // wxMSW which uses this function for multi-line texts, so we may only + // call DrawText() for single-line strings from here to avoid infinite + // recursion. wxString curLine; for ( wxString::const_iterator pc = text.begin(); ; ++pc ) { - if ( *pc == _T('\n') || pc == text.end() ) + if ( pc == text.end() || *pc == '\n' ) { int xRealStart = x; // init it here to avoid compielr warnings @@ -1249,7 +1279,7 @@ void wxDC::DrawLabel(const wxString& text, if ( startUnderscore != endUnderscore ) { // it should be of the same colour as text - SetPen(wxPen(GetTextForeground(), 0, wxSOLID)); + SetPen(wxPen(GetTextForeground(), 0, wxPENSTYLE_SOLID)); yUnderscore--; @@ -1288,7 +1318,7 @@ void wxDC::GetTextExtent(const wxString& string, *externalLeading = externalLeading2; } -void wxDC::GetLogicalOrigin(long *x, long *y) const +void wxDC::GetLogicalOrigin(long *x, long *y) const { wxCoord x2, y2; m_pimpl->DoGetLogicalOrigin(&x2, &y2); @@ -1298,7 +1328,7 @@ void wxDC::GetLogicalOrigin(long *x, long *y) const *y = y2; } -void wxDC::GetDeviceOrigin(long *x, long *y) const +void wxDC::GetDeviceOrigin(long *x, long *y) const { wxCoord x2, y2; m_pimpl->DoGetDeviceOrigin(&x2, &y2); @@ -1306,9 +1336,9 @@ void wxDC::GetDeviceOrigin(long *x, long *y) const *x = x2; if ( y ) *y = y2; - } - -void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const + } + +void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const { wxCoord xx,yy,ww,hh; m_pimpl->DoGetClippingBox(&xx, &yy, &ww, &hh); @@ -1316,6 +1346,340 @@ void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const if (y) *y = yy; if (w) *w = ww; if (h) *h = hh; - } - + } + +void wxDC::DrawObject(wxDrawObject* drawobject) +{ + drawobject->Draw(*this); + CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); + CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); +} + #endif // WXWIN_COMPATIBILITY_2_8 + +/* +Notes for wxWidgets DrawEllipticArcRot(...) + +wxDCBase::DrawEllipticArcRot(...) draws a rotated elliptic arc or an ellipse. +It uses wxDCBase::CalculateEllipticPoints(...) and wxDCBase::Rotate(...), +which are also new. + +All methods are generic, so they can be implemented in wxDCBase. +DoDrawEllipticArcRot(...) is virtual, so it can be called from deeper +methods like (WinCE) wxDC::DoDrawArc(...). + +CalculateEllipticPoints(...) fills a given list of wxPoints with some points +of an elliptic arc. The algorithm is pixel-based: In every row (in flat +parts) or every column (in steep parts) only one pixel is calculated. +Trigonometric calculation (sin, cos, tan, atan) is only done if the +starting angle is not equal to the ending angle. The calculation of the +pixels is done using simple arithmetic only and should perform not too +bad even on devices without floating point processor. I didn't test this yet. + +Rotate(...) rotates a list of point pixel-based, you will see rounding errors. +For instance: an ellipse rotated 180 degrees is drawn +slightly different from the original. + +The points are then moved to an array and used to draw a polyline and/or polygon +(with center added, the pie). +The result looks quite similar to the native ellipse, only e few pixels differ. + +The performance on a desktop system (Athlon 1800, WinXP) is about 7 times +slower as DrawEllipse(...), which calls the native API. +An rotated ellipse outside the clipping region takes nearly the same time, +while an native ellipse outside takes nearly no time to draw. + +If you draw an arc with this new method, you will see the starting and ending angles +are calculated properly. +If you use DrawEllipticArc(...), you will see they are only correct for circles +and not properly calculated for ellipses. + +Peter Lenhard +p.lenhard@t-online.de +*/ + +#ifdef __WXWINCE__ +void wxDCImpl::DoDrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord w, wxCoord h, + double sa, double ea, double angle ) +{ + wxPointList list; + + CalculateEllipticPoints( &list, x, y, w, h, sa, ea ); + Rotate( &list, angle, wxPoint( x+w/2, y+h/2 ) ); + + // Add center (for polygon/pie) + list.Append( new wxPoint( x+w/2, y+h/2 ) ); + + // copy list into array and delete list elements + int n = list.GetCount(); + wxPoint *points = new wxPoint[n]; + int i = 0; + wxPointList::compatibility_iterator node; + for ( node = list.GetFirst(); node; node = node->GetNext(), i++ ) + { + wxPoint *point = node->GetData(); + points[i].x = point->x; + points[i].y = point->y; + delete point; + } + + // first draw the pie without pen, if necessary + if( GetBrush() != *wxTRANSPARENT_BRUSH ) + { + wxPen tempPen( GetPen() ); + SetPen( *wxTRANSPARENT_PEN ); + DoDrawPolygon( n, points, 0, 0 ); + SetPen( tempPen ); + } + + // then draw the arc without brush, if necessary + if( GetPen() != *wxTRANSPARENT_PEN ) + { + // without center + DoDrawLines( n-1, points, 0, 0 ); + } + + delete [] points; + +} // DrawEllipticArcRot + +void wxDCImpl::Rotate( wxPointList* points, double angle, wxPoint center ) +{ + if( angle != 0.0 ) + { + double pi(M_PI); + double dSinA = -sin(angle*2.0*pi/360.0); + double dCosA = cos(angle*2.0*pi/360.0); + wxPointList::compatibility_iterator node; + for ( node = points->GetFirst(); node; node = node->GetNext() ) + { + wxPoint* point = node->GetData(); + + // transform coordinates, if necessary + if( center.x ) point->x -= center.x; + if( center.y ) point->y -= center.y; + + // calculate rotation, rounding simply by implicit cast to integer + int xTemp = point->x * dCosA - point->y * dSinA; + point->y = point->x * dSinA + point->y * dCosA; + point->x = xTemp; + + // back transform coordinates, if necessary + if( center.x ) point->x += center.x; + if( center.y ) point->y += center.y; + } + } +} + +void wxDCImpl::CalculateEllipticPoints( wxPointList* points, + wxCoord xStart, wxCoord yStart, + wxCoord w, wxCoord h, + double sa, double ea ) +{ + double pi = M_PI; + double sar = 0; + double ear = 0; + int xsa = 0; + int ysa = 0; + int xea = 0; + int yea = 0; + int sq = 0; + int eq = 0; + bool bUseAngles = false; + if( w<0 ) w = -w; + if( h<0 ) h = -h; + // half-axes + wxCoord a = w/2; + wxCoord b = h/2; + // decrement 1 pixel if ellipse is smaller than 2*a, 2*b + int decrX = 0; + if( 2*a == w ) decrX = 1; + int decrY = 0; + if( 2*b == h ) decrY = 1; + // center + wxCoord xCenter = xStart + a; + wxCoord yCenter = yStart + b; + // calculate data for start and end, if necessary + if( sa != ea ) + { + bUseAngles = true; + // normalisation of angles + while( sa<0 ) sa += 360; + while( ea<0 ) ea += 360; + while( sa>=360 ) sa -= 360; + while( ea>=360 ) ea -= 360; + // calculate quadrant numbers + if( sa > 270 ) sq = 3; + else if( sa > 180 ) sq = 2; + else if( sa > 90 ) sq = 1; + if( ea > 270 ) eq = 3; + else if( ea > 180 ) eq = 2; + else if( ea > 90 ) eq = 1; + sar = sa * pi / 180.0; + ear = ea * pi / 180.0; + // correct angle circle -> ellipse + sar = atan( -a/(double)b * tan( sar ) ); + if ( sq == 1 || sq == 2 ) sar += pi; + ear = atan( -a/(double)b * tan( ear ) ); + if ( eq == 1 || eq == 2 ) ear += pi; + // coordinates of points + xsa = xCenter + a * cos( sar ); + if( sq == 0 || sq == 3 ) xsa -= decrX; + ysa = yCenter + b * sin( sar ); + if( sq == 2 || sq == 3 ) ysa -= decrY; + xea = xCenter + a * cos( ear ); + if( eq == 0 || eq == 3 ) xea -= decrX; + yea = yCenter + b * sin( ear ); + if( eq == 2 || eq == 3 ) yea -= decrY; + } // if iUseAngles + // calculate c1 = b^2, c2 = b^2/a^2 with a = w/2, b = h/2 + double c1 = b * b; + double c2 = 2.0 / w; + c2 *= c2; + c2 *= c1; + wxCoord x = 0; + wxCoord y = b; + long x2 = 1; + long y2 = y*y; + long y2_old = 0; + long y_old = 0; + // Lists for quadrant 1 to 4 + wxPointList pointsarray[4]; + // Calculate points for first quadrant and set in all quadrants + for( x = 0; x <= a; ++x ) + { + x2 = x2+x+x-1; + y2_old = y2; + y_old = y; + bool bNewPoint = false; + while( y2 > c1 - c2 * x2 && y > 0 ) + { + bNewPoint = true; + y2 = y2-y-y+1; + --y; + } + // old y now to big: set point with old y, old x + if( bNewPoint && x>1) + { + int x1 = x - 1; + // remove points on the same line + pointsarray[0].Insert( new wxPoint( xCenter + x1 - decrX, yCenter - y_old ) ); + pointsarray[1].Append( new wxPoint( xCenter - x1, yCenter - y_old ) ); + pointsarray[2].Insert( new wxPoint( xCenter - x1, yCenter + y_old - decrY ) ); + pointsarray[3].Append( new wxPoint( xCenter + x1 - decrX, yCenter + y_old - decrY ) ); + } // set point + } // calculate point + + // Starting and/or ending points for the quadrants, first quadrant gets both. + pointsarray[0].Insert( new wxPoint( xCenter + a - decrX, yCenter ) ); + pointsarray[0].Append( new wxPoint( xCenter, yCenter - b ) ); + pointsarray[1].Append( new wxPoint( xCenter - a, yCenter ) ); + pointsarray[2].Append( new wxPoint( xCenter, yCenter + b - decrY ) ); + pointsarray[3].Append( new wxPoint( xCenter + a - decrX, yCenter ) ); + + // copy quadrants in original list + if( bUseAngles ) + { + // Copy the right part of the points in the lists + // and delete the wxPoints, because they do not leave this method. + points->Append( new wxPoint( xsa, ysa ) ); + int q = sq; + bool bStarted = false; + bool bReady = false; + bool bForceTurn = ( sq == eq && sa > ea ); + while( !bReady ) + { + wxPointList::compatibility_iterator node; + for( node = pointsarray[q].GetFirst(); node; node = node->GetNext() ) + { + // once: go to starting point in start quadrant + if( !bStarted && + ( + node->GetData()->x < xsa+1 && q <= 1 + || + node->GetData()->x > xsa-1 && q >= 2 + ) + ) + { + bStarted = true; + } + + // copy point, if not at ending point + if( bStarted ) + { + if( q != eq || bForceTurn + || + ( (wxPoint*) node->GetData() )->x > xea+1 && q <= 1 + || + ( (wxPoint*) node->GetData() )->x < xea-1 && q >= 2 + ) + { + // copy point + wxPoint* pPoint = new wxPoint( *(node->GetData()) ); + points->Append( pPoint ); + } + else if( q == eq && !bForceTurn || node->GetData()->x == xea) + { + bReady = true; + } + } + } // for node + ++q; + if( q > 3 ) q = 0; + bForceTurn = false; + bStarted = true; + } // while not bReady + points->Append( new wxPoint( xea, yea ) ); + + // delete points + for( q = 0; q < 4; ++q ) + { + wxPointList::compatibility_iterator node; + for( node = pointsarray[q].GetFirst(); node; node = node->GetNext() ) + { + wxPoint *p = node->GetData(); + delete p; + } + } + } + else + { + wxPointList::compatibility_iterator node; + // copy whole ellipse, wxPoints will be deleted outside + for( node = pointsarray[0].GetFirst(); node; node = node->GetNext() ) + { + wxPoint *p = node->GetData(); + points->Append( p ); + } + for( node = pointsarray[1].GetFirst(); node; node = node->GetNext() ) + { + wxPoint *p = node->GetData(); + points->Append( p ); + } + for( node = pointsarray[2].GetFirst(); node; node = node->GetNext() ) + { + wxPoint *p = node->GetData(); + points->Append( p ); + } + for( node = pointsarray[3].GetFirst(); node; node = node->GetNext() ) + { + wxPoint *p = node->GetData(); + points->Append( p ); + } + } // not iUseAngles +} // CalculateEllipticPoints + +#endif // __WXWINCE__ + +float wxDCImpl::GetFontPointSizeAdjustment(float dpi) +{ + // wxMSW has long-standing bug where wxFont point size is interpreted as + // "pixel size corresponding to given point size *on screen*". In other + // words, on a typical 600dpi printer and a typical 96dpi screen, fonts + // are ~6 times smaller when printing. Unfortunately, this bug is so severe + // that *all* printing code has to account for it and consequently, other + // ports need to emulate this bug too: + const wxSize screenPPI = wxGetDisplayPPI(); + return float(screenPPI.y) / dpi; +}