X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/888dde65f43d5f57e8fb2028b27191cca1741403..12b5f4b4d2d8a07962da7ba3b78c8c1ec2634a67:/src/common/dcbase.cpp diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp index 194e4422fb..224cf624a1 100644 --- a/src/common/dcbase.cpp +++ b/src/common/dcbase.cpp @@ -29,31 +29,69 @@ #include "wx/dcmemory.h" #include "wx/dcscreen.h" #include "wx/dcprint.h" -#include "wx/dcbuffer.h" // for IMPLEMENT_DYNAMIC_CLASS #include "wx/prntbase.h" #ifndef WX_PRECOMP #include "wx/math.h" + #include "wx/module.h" #endif -#if wxUSE_NEW_DC - #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" +#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 //---------------------------------------------------------------------------- @@ -62,54 +100,56 @@ 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 ) @@ -117,9 +157,19 @@ 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 ) @@ -132,42 +182,34 @@ wxDCImpl* wxNativeDCFactory::CreateScreenDC( wxScreenDC *owner ) return new wxScreenDCImpl( owner ); } +#if wxUSE_PRINTING_ARCHITECTURE wxDCImpl *wxNativeDCFactory::CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data ) { wxPrintFactory *factory = wxPrintFactory::GetFactory(); return factory->CreatePrinterDCImpl( owner, data ); } +#endif //----------------------------------------------------------------------------- // wxWindowDC //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC) +IMPLEMENT_ABSTRACT_CLASS(wxWindowDC, wxDC) -wxWindowDC::wxWindowDC() +wxWindowDC::wxWindowDC(wxWindow *win) + : wxDC(wxDCFactory::Get()->CreateWindowDC(this, win)) { } -wxWindowDC::wxWindowDC( wxWindow *win ) -{ - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateWindowDC( this, win ); -} - //----------------------------------------------------------------------------- // wxClientDC //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxWindowDC) - -wxClientDC::wxClientDC() -{ -} +IMPLEMENT_ABSTRACT_CLASS(wxClientDC, wxWindowDC) -wxClientDC::wxClientDC( wxWindow *win ) +wxClientDC::wxClientDC(wxWindow *win) + : wxWindowDC(wxDCFactory::Get()->CreateClientDC(this, win)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreateClientDC( this, win ); } //----------------------------------------------------------------------------- @@ -177,21 +219,18 @@ 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) @@ -220,21 +259,16 @@ wxBitmap& wxMemoryDC::GetSelectedBitmap() return GetImpl()->GetSelectedBitmap(); } - + //----------------------------------------------------------------------------- // wxPaintDC //----------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxClientDC) - -wxPaintDC::wxPaintDC() -{ -} +IMPLEMENT_ABSTRACT_CLASS(wxPaintDC, wxClientDC) -wxPaintDC::wxPaintDC( wxWindow *win ) +wxPaintDC::wxPaintDC(wxWindow *win) + : wxClientDC(wxDCFactory::Get()->CreatePaintDC(this, win)) { - wxDCFactory *factory = wxDCFactory::GetFactory(); - m_pimpl = factory->CreatePaintDC( this, win ); } //----------------------------------------------------------------------------- @@ -244,44 +278,39 @@ 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 ); } //----------------------------------------------------------------------------- // wxPrinterDC //----------------------------------------------------------------------------- +#if wxUSE_PRINTING_ARCHITECTURE + 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 // wxUSE_PRINTING_ARCHITECTURE //----------------------------------------------------------------------------- // wxDCImpl @@ -306,11 +335,11 @@ 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() @@ -325,7 +354,7 @@ wxDCImpl::wxDCImpl( wxDC *owner ) (double)wxGetDisplaySizeMM().GetWidth(); m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / (double)wxGetDisplaySizeMM().GetHeight(); - + ResetBoundingBox(); ResetClipping(); } @@ -340,12 +369,12 @@ 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 @@ -360,12 +389,12 @@ 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 @@ -384,7 +413,7 @@ void wxDCImpl::ComputeScaleAndOrigin() m_scaleY = m_logicalScaleY * m_userScaleY; } -void wxDCImpl::SetMapMode( int mode ) +void wxDCImpl::SetMapMode( wxMappingMode mode ) { switch (mode) { @@ -621,7 +650,7 @@ 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) @@ -667,7 +696,7 @@ 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]; @@ -690,7 +719,7 @@ wxDCImpl::DoDrawPolyPolygon(int n, int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, - int fillStyle) + wxPolygonFillMode fillStyle) { if ( n == 1 ) { @@ -717,7 +746,7 @@ 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++) @@ -730,38 +759,21 @@ 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 ---------------------------------------- @@ -985,7 +997,7 @@ 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(), @@ -1022,7 +1034,7 @@ 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, @@ -1096,6 +1108,16 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, 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(wxBrush(win->GetBackgroundColour())); +} + //----------------------------------------------------------------------------- // wxDC //----------------------------------------------------------------------------- @@ -1176,7 +1198,7 @@ void wxDC::DrawLabel(const wxString& text, 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 @@ -1241,7 +1263,7 @@ 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--; @@ -1280,7 +1302,7 @@ 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); @@ -1290,7 +1312,7 @@ 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); @@ -1298,9 +1320,9 @@ 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); @@ -1308,1256 +1330,129 @@ void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const if (y) *y = yy; if (w) *w = ww; if (h) *h = hh; - } - + } + #endif // WXWIN_COMPATIBILITY_2_8 +/* +Notes for wxWidgets DrawEllipticArcRot(...) -#else // wxUSE_NEW_DC +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(...). -// bool wxDCBase::sm_cacheing = false; +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. -IMPLEMENT_ABSTRACT_CLASS(wxDCBase, wxObject) +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. -// ============================================================================ -// implementation -// ============================================================================ +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. -IMPLEMENT_DYNAMIC_CLASS(wxBufferedDC, wxMemoryDC) -IMPLEMENT_ABSTRACT_CLASS(wxBufferedPaintDC, wxBufferedDC) +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. -wxDCBase::wxDCBase() - : m_colour(wxColourDisplay()) - , m_ok(true) - , m_clipping(false) - , m_isInteractive(0) - , m_isBBoxValid(false) - , m_logicalOriginX(0), m_logicalOriginY(0) - , m_deviceOriginX(0), m_deviceOriginY(0) - , m_deviceLocalOriginX(0), m_deviceLocalOriginY(0) - , m_logicalScaleX(1.0), m_logicalScaleY(1.0) - , m_userScaleX(1.0), m_userScaleY(1.0) - , m_scaleX(1.0), m_scaleY(1.0) - , m_signX(1), m_signY(1) - , 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_mappingMode(wxMM_TEXT) - , m_pen() - , m_brush() - , m_backgroundBrush(*wxTRANSPARENT_BRUSH) - , m_textForegroundColour(*wxBLACK) - , m_textBackgroundColour(*wxWHITE) - , m_font() -#if wxUSE_PALETTE - , m_palette() - , m_hasCustomPalette(false) -#endif // wxUSE_PALETTE -{ - m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() / - (double)wxGetDisplaySizeMM().GetWidth(); - m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / - (double)wxGetDisplaySizeMM().GetHeight(); - - ResetBoundingBox(); - ResetClipping(); -} +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. -wxDCBase::~wxDCBase() -{ -} +Peter Lenhard +p.lenhard@t-online.de +*/ -#if WXWIN_COMPATIBILITY_2_6 -void wxDCBase::BeginDrawing() +#ifdef __WXWINCE__ +void wxDCImpl::DoDrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord w, wxCoord h, + double sa, double ea, double angle ) { -} + wxPointList list; -void wxDCBase::EndDrawing() -{ -} -#endif // WXWIN_COMPATIBILITY_2_6 + CalculateEllipticPoints( &list, x, y, w, h, sa, ea ); + Rotate( &list, angle, wxPoint( x+w/2, y+h/2 ) ); -#if WXWIN_COMPATIBILITY_2_8 - // for compatibility with the old code when wxCoord was long everywhere -void wxDCBase::GetTextExtent(const wxString& string, - long *x, long *y, - long *descent, - long *externalLeading, - const wxFont *theFont) const + // 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++ ) { - wxCoord x2, y2, descent2, externalLeading2; - DoGetTextExtent(string, &x2, &y2, - &descent2, &externalLeading2, - theFont); - if ( x ) - *x = x2; - if ( y ) - *y = y2; - if ( descent ) - *descent = descent2; - if ( externalLeading ) - *externalLeading = externalLeading2; + wxPoint *point = node->GetData(); + points[i].x = point->x; + points[i].y = point->y; + delete point; } -void wxDCBase::GetLogicalOrigin(long *x, long *y) const + // first draw the pie without pen, if necessary + if( GetBrush() != *wxTRANSPARENT_BRUSH ) { - wxCoord x2, y2; - DoGetLogicalOrigin(&x2, &y2); - if ( x ) - *x = x2; - if ( y ) - *y = y2; + wxPen tempPen( GetPen() ); + SetPen( *wxTRANSPARENT_PEN ); + DoDrawPolygon( n, points, 0, 0 ); + SetPen( tempPen ); } -void wxDCBase::GetDeviceOrigin(long *x, long *y) const - { - wxCoord x2, y2; - DoGetDeviceOrigin(&x2, &y2); - if ( x ) - *x = x2; - if ( y ) - *y = y2; - } - -void wxDCBase::GetClippingBox(long *x, long *y, long *w, long *h) const + // then draw the arc without brush, if necessary + if( GetPen() != *wxTRANSPARENT_PEN ) { - wxCoord xx,yy,ww,hh; - DoGetClippingBox(&xx, &yy, &ww, &hh); - if (x) *x = xx; - if (y) *y = yy; - if (w) *w = ww; - if (h) *h = hh; - } -#endif // WXWIN_COMPATIBILITY_2_8 - - - -// ---------------------------------------------------------------------------- -// coordinate conversions and transforms -// ---------------------------------------------------------------------------- - -wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const -{ - return wxRound((double)(x - m_deviceOriginX - m_deviceLocalOriginX) / m_scaleX) * m_signX + m_logicalOriginX; -} - -wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const -{ - return wxRound((double)(y - m_deviceOriginY - m_deviceLocalOriginY) / m_scaleY) * m_signY + m_logicalOriginY; -} - -wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const -{ - return wxRound((double)(x) / m_scaleX); -} + // without center + DoDrawLines( n-1, points, 0, 0 ); + } -wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const -{ - return wxRound((double)(y) / m_scaleY); -} + delete [] points; -wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const -{ - return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX + m_deviceLocalOriginX; -} +} // DrawEllipticArcRot -wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const +void wxDCImpl::Rotate( wxPointList* points, double angle, wxPoint center ) { - return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY + m_deviceLocalOriginY; -} + 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(); -wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const -{ - return wxRound((double)(x) * m_scaleX); -} + // transform coordinates, if necessary + if( center.x ) point->x -= center.x; + if( center.y ) point->y -= center.y; -wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const -{ - return wxRound((double)(y) * m_scaleY); -} + // 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; -void wxDCBase::ComputeScaleAndOrigin() -{ - m_scaleX = m_logicalScaleX * m_userScaleX; - m_scaleY = m_logicalScaleY * m_userScaleY; + // back transform coordinates, if necessary + if( center.x ) point->x += center.x; + if( center.y ) point->y += center.y; + } + } } -void wxDCBase::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; - default: - case wxMM_TEXT: - SetLogicalScale( 1.0, 1.0 ); - break; - } - m_mappingMode = mode; -} - -void wxDCBase::SetUserScale( double x, double y ) -{ - // allow negative ? -> no - m_userScaleX = x; - m_userScaleY = y; - ComputeScaleAndOrigin(); -} - -void wxDCBase::SetLogicalScale( double x, double y ) -{ - // allow negative ? - m_logicalScaleX = x; - m_logicalScaleY = y; - ComputeScaleAndOrigin(); -} - -void wxDCBase::SetLogicalOrigin( wxCoord x, wxCoord y ) -{ - m_logicalOriginX = x * m_signX; - m_logicalOriginY = y * m_signY; - ComputeScaleAndOrigin(); -} - -void wxDCBase::SetDeviceOrigin( wxCoord x, wxCoord y ) -{ - m_deviceOriginX = x; - m_deviceOriginY = y; - ComputeScaleAndOrigin(); -} - -void wxDCBase::SetDeviceLocalOrigin( wxCoord x, wxCoord y ) -{ - m_deviceLocalOriginX = x; - m_deviceLocalOriginY = y; - ComputeScaleAndOrigin(); -} - -void wxDCBase::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) -{ - // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there - // wxWidgets 2.9: no longer override it - m_signX = (xLeftRight ? 1 : -1); - m_signY = (yBottomUp ? -1 : 1); - ComputeScaleAndOrigin(); -} - -// ---------------------------------------------------------------------------- -// special symbols -// ---------------------------------------------------------------------------- - -void wxDCBase::DoDrawCheckMark(wxCoord x1, wxCoord y1, - wxCoord width, wxCoord height) -{ - wxCHECK_RET( Ok(), wxT("invalid window dc") ); - - wxCoord x2 = x1 + width, - y2 = y1 + height; - - // the pen width is calibrated to give 3 for width == height == 10 - wxDCPenChanger pen((wxDC&)*this, - wxPen(GetTextForeground(), (width + height + 1)/7)); - - // we're drawing a scaled version of wx/generic/tick.xpm here - wxCoord x3 = x1 + (4*width) / 10, // x of the tick bottom - y3 = y1 + height / 2; // y of the left tick branch - DoDrawLine(x1, y3, x3, y2); - DoDrawLine(x3, y2, x2, y1); - - CalcBoundingBox(x1, y1); - CalcBoundingBox(x2, y2); -} - -// ---------------------------------------------------------------------------- -// stubs for functions not implemented in all ports -// ---------------------------------------------------------------------------- - -bool -wxDCBase::DoStretchBlit(wxCoord xdest, wxCoord ydest, - wxCoord dstWidth, wxCoord dstHeight, - wxDC *source, - wxCoord xsrc, wxCoord ysrc, - wxCoord srcWidth, wxCoord srcHeight, - int rop, - bool useMask, - wxCoord xsrcMask, - wxCoord ysrcMask) -{ - wxCHECK_MSG( srcWidth && srcHeight && dstWidth && dstHeight, false, - _T("invalid blit size") ); - - // emulate the stretching by modifying the DC scale - double xscale = (double)srcWidth/dstWidth, - yscale = (double)srcHeight/dstHeight; - - double xscaleOld, yscaleOld; - GetUserScale(&xscaleOld, &yscaleOld); - SetUserScale(xscaleOld/xscale, yscaleOld/yscale); - - bool rc = DoBlit(wxCoord(xdest*xscale), wxCoord(ydest*yscale), - wxCoord(dstWidth*xscale), wxCoord(dstHeight*yscale), - source, - xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask); - - SetUserScale(xscaleOld, yscaleOld); - - return rc; -} - -// ---------------------------------------------------------------------------- -// line/polygons -// ---------------------------------------------------------------------------- - -void wxDCBase::DrawLines(const wxPointList *list, wxCoord xoffset, wxCoord yoffset) -{ - unsigned int n = list->GetCount(); - wxPoint *points = new wxPoint[n]; - - unsigned 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; - } - - DoDrawLines(n, points, xoffset, yoffset); - - delete [] points; -} - -#if WXWIN_COMPATIBILITY_2_8 -void wxDCBase::DrawLines(const wxList *list, wxCoord xoffset, wxCoord yoffset ) -{ - unsigned int n = list->GetCount(); - wxPoint *points = new wxPoint[n]; - - unsigned int i = 0; - wxObjectList::compatibility_iterator node; - for ( node = list->GetFirst(); node; node = node->GetNext(), i++ ) - { - wxPoint *point = (wxPoint*) node->GetData(); - points[i].x = point->x; - points[i].y = point->y; - } - - DoDrawLines(n, points, xoffset, yoffset); - - delete [] points; -} -#endif // WXWIN_COMPATIBILITY_2_8 - - -void wxDCBase::DrawPolygon(const wxPointList *list, - wxCoord xoffset, wxCoord yoffset, - int fillStyle) -{ - unsigned int n = list->GetCount(); - wxPoint *points = new wxPoint[n]; - - unsigned 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; - } - - DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); - - delete [] points; -} - - -#if WXWIN_COMPATIBILITY_2_8 -void wxDCBase::DrawPolygon(const wxList *list, - wxCoord xoffset, wxCoord yoffset, - int fillStyle ) -{ - unsigned int n = list->GetCount(); - wxPoint *points = new wxPoint[n]; - - unsigned int i = 0; - wxObjectList::compatibility_iterator node; - for ( node = list->GetFirst(); node; node = node->GetNext(), i++ ) - { - wxPoint *point = (wxPoint*) node->GetData(); - points[i].x = point->x; - points[i].y = point->y; - } - - DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); - - delete [] points; -} -#endif // WXWIN_COMPATIBILITY_2_8 - -void -wxDCBase::DoDrawPolyPolygon(int n, - int count[], - wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle) -{ - if ( n == 1 ) - { - DoDrawPolygon(count[0], points, xoffset, yoffset, fillStyle); - return; - } - - int i, j, lastOfs; - wxPoint* pts; - wxPen pen; - - for (i = j = lastOfs = 0; i < n; i++) - { - lastOfs = j; - j += count[i]; - } - pts = new wxPoint[j+n-1]; - for (i = 0; i < j; i++) - pts[i] = points[i]; - for (i = 2; i <= n; i++) - { - lastOfs -= count[n-i]; - pts[j++] = pts[lastOfs]; - } - - pen = GetPen(); - SetPen(wxPen(*wxBLACK, 0, wxTRANSPARENT)); - DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle); - SetPen(pen); - for (i = j = 0; i < n; i++) - { - DoDrawLines(count[i], pts+j, xoffset, yoffset); - j += count[i]; - } - delete[] pts; -} - -// ---------------------------------------------------------------------------- -// splines -// ---------------------------------------------------------------------------- - -#if wxUSE_SPLINES - -void wxDCBase::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 ); - - DrawSpline(&point_list); - - for( wxPointList::compatibility_iterator node = point_list.GetFirst(); node; node = node->GetNext() ) - { - wxPoint *p = node->GetData(); - delete p; - } -} - -void wxDCBase::DrawSpline(int n, wxPoint points[]) -{ - wxPointList list; - for (int i =0; i < n; i++) - list.Append( &points[i] ); - - DrawSpline(&list); -} - -// ----------------------------------- spline code ---------------------------------------- - -void wx_quadratic_spline(double a1, double b1, double a2, double b2, - double a3, double b3, double a4, double b4); -void wx_clear_stack(); -int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3, - double *y3, double *x4, double *y4); -void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, - double x4, double y4); -static bool wx_spline_add_point(double x, double y); -static void wx_spline_draw_point_array(wxDCBase *dc); - -wxPointList wx_spline_point_list; - -#define half(z1, z2) ((z1+z2)/2.0) -#define THRESHOLD 5 - -/* iterative version */ - -void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4, - double b4) -{ - register double xmid, ymid; - double x1, y1, x2, y2, x3, y3, x4, y4; - - wx_clear_stack(); - wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4); - - while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) { - xmid = (double)half(x2, x3); - ymid = (double)half(y2, y3); - if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD && - fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) { - wx_spline_add_point( x1, y1 ); - wx_spline_add_point( xmid, ymid ); - } else { - wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3), - (double)half(x3, x4), (double)half(y3, y4), x4, y4); - wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2), - (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid); - } - } -} - -/* utilities used by spline drawing routines */ - -typedef struct wx_spline_stack_struct { - double x1, y1, x2, y2, x3, y3, x4, y4; -} Stack; - -#define SPLINE_STACK_DEPTH 20 -static Stack wx_spline_stack[SPLINE_STACK_DEPTH]; -static Stack *wx_stack_top; -static int wx_stack_count; - -void wx_clear_stack() -{ - wx_stack_top = wx_spline_stack; - wx_stack_count = 0; -} - -void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4) -{ - wx_stack_top->x1 = x1; - wx_stack_top->y1 = y1; - wx_stack_top->x2 = x2; - wx_stack_top->y2 = y2; - wx_stack_top->x3 = x3; - wx_stack_top->y3 = y3; - wx_stack_top->x4 = x4; - wx_stack_top->y4 = y4; - wx_stack_top++; - wx_stack_count++; -} - -int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, - double *x3, double *y3, double *x4, double *y4) -{ - if (wx_stack_count == 0) - return (0); - wx_stack_top--; - wx_stack_count--; - *x1 = wx_stack_top->x1; - *y1 = wx_stack_top->y1; - *x2 = wx_stack_top->x2; - *y2 = wx_stack_top->y2; - *x3 = wx_stack_top->x3; - *y3 = wx_stack_top->y3; - *x4 = wx_stack_top->x4; - *y4 = wx_stack_top->y4; - return (1); -} - -static bool wx_spline_add_point(double x, double y) -{ - wxPoint *point = new wxPoint( wxRound(x), wxRound(y) ); - wx_spline_point_list.Append( point ); - return true; -} - -static void wx_spline_draw_point_array(wxDCBase *dc) -{ - dc->DrawLines(&wx_spline_point_list, 0, 0 ); - wxPointList::compatibility_iterator node = wx_spline_point_list.GetFirst(); - while (node) - { - wxPoint *point = node->GetData(); - delete point; - wx_spline_point_list.Erase(node); - node = wx_spline_point_list.GetFirst(); - } -} - -#if WXWIN_COMPATIBILITY_2_8 -void wxDCBase::DrawSpline(const wxList *points) -{ - wxPointList list; - wxObjectList::compatibility_iterator node = points->GetFirst(); - while (node) - { - list.Append( (wxPoint*) node->GetData() ); - node = node->GetNext(); - } - DoDrawSpline( &list ); -} -#endif // WXWIN_COMPATIBILITY_2_8 - -void wxDCBase::DoDrawSpline( const wxPointList *points ) -{ - wxCHECK_RET( Ok(), wxT("invalid window dc") ); - - wxPoint *p; - double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; - double x1, y1, x2, y2; - - wxPointList::compatibility_iterator node = points->GetFirst(); - if (!node) - // empty list - return; - - p = node->GetData(); - - x1 = p->x; - y1 = p->y; - - node = node->GetNext(); - p = node->GetData(); - - x2 = p->x; - y2 = p->y; - cx1 = (double)((x1 + x2) / 2); - cy1 = (double)((y1 + y2) / 2); - cx2 = (double)((cx1 + x2) / 2); - cy2 = (double)((cy1 + y2) / 2); - - wx_spline_add_point(x1, y1); - - while ((node = node->GetNext()) -#if !wxUSE_STL - != NULL -#endif // !wxUSE_STL - ) - { - p = node->GetData(); - x1 = x2; - y1 = y2; - x2 = p->x; - y2 = p->y; - cx4 = (double)(x1 + x2) / 2; - cy4 = (double)(y1 + y2) / 2; - cx3 = (double)(x1 + cx4) / 2; - cy3 = (double)(y1 + cy4) / 2; - - wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4); - - cx1 = cx4; - cy1 = cy4; - cx2 = (double)(cx1 + x2) / 2; - cy2 = (double)(cy1 + y2) / 2; - } - - wx_spline_add_point( cx1, cy1 ); - wx_spline_add_point( x2, y2 ); - - wx_spline_draw_point_array( this ); -} - -#endif // wxUSE_SPLINES - -// ---------------------------------------------------------------------------- -// Partial Text Extents -// ---------------------------------------------------------------------------- - - -// Each element of the widths array will be the width of the string up to and -// including the corresponding character in text. This is the generic -// implementation, the port-specific classes should do this with native APIs -// if available and if faster. Note: pango_layout_index_to_pos is much slower -// than calling GetTextExtent!! - -#define FWC_SIZE 256 - -class FontWidthCache -{ -public: - FontWidthCache() : m_scaleX(1), m_widths(NULL) { } - ~FontWidthCache() { delete []m_widths; } - - void Reset() - { - if (!m_widths) - m_widths = new int[FWC_SIZE]; - - memset(m_widths, 0, sizeof(int)*FWC_SIZE); - } - - wxFont m_font; - double m_scaleX; - int *m_widths; -}; - -static FontWidthCache s_fontWidthCache; - -bool wxDCBase::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const -{ - int totalWidth = 0; - - const size_t len = text.length(); - widths.Empty(); - widths.Add(0, len); - - // reset the cache if font or horizontal scale have changed - if ( !s_fontWidthCache.m_widths || - !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) || - (s_fontWidthCache.m_font != GetFont()) ) - { - s_fontWidthCache.Reset(); - s_fontWidthCache.m_font = GetFont(); - s_fontWidthCache.m_scaleX = m_scaleX; - } - - // Calculate the position of each character based on the widths of - // the previous characters - int w, h; - for ( size_t i = 0; i < len; i++ ) - { - const wxChar c = text[i]; - unsigned int c_int = (unsigned int)c; - - if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0)) - { - w = s_fontWidthCache.m_widths[c_int]; - } - else - { - GetTextExtent(c, &w, &h); - if (c_int < FWC_SIZE) - s_fontWidthCache.m_widths[c_int] = w; - } - - totalWidth += w; - widths[i] = totalWidth; - } - - return true; -} - - -// ---------------------------------------------------------------------------- -// enhanced text drawing -// ---------------------------------------------------------------------------- - -void wxDCBase::GetMultiLineTextExtent(const wxString& text, - wxCoord *x, - wxCoord *y, - wxCoord *h, - const wxFont *font) const -{ - wxCoord widthTextMax = 0, widthLine, - heightTextTotal = 0, heightLineDefault = 0, heightLine = 0; - - wxString curLine; - for ( wxString::const_iterator pc = text.begin(); ; ++pc ) - { - if ( pc == text.end() || *pc == _T('\n') ) - { - if ( curLine.empty() ) - { - // we can't use GetTextExtent - it will return 0 for both width - // and height and an empty line should count in height - // calculation - - // assume that this line has the same height as the previous - // one - if ( !heightLineDefault ) - heightLineDefault = heightLine; - - if ( !heightLineDefault ) - { - // but we don't know it yet - choose something reasonable - GetTextExtent(_T("W"), NULL, &heightLineDefault, - NULL, NULL, font); - } - - heightTextTotal += heightLineDefault; - } - else - { - GetTextExtent(curLine, &widthLine, &heightLine, - NULL, NULL, font); - if ( widthLine > widthTextMax ) - widthTextMax = widthLine; - heightTextTotal += heightLine; - } - - if ( pc == text.end() ) - { - break; - } - else // '\n' - { - curLine.clear(); - } - } - else - { - curLine += *pc; - } - } - - if ( x ) - *x = widthTextMax; - if ( y ) - *y = heightTextTotal; - if ( h ) - *h = heightLine; -} - -void wxDCBase::DrawLabel(const wxString& text, - const wxBitmap& bitmap, - const wxRect& rect, - int alignment, - int indexAccel, - wxRect *rectBounding) -{ - // find the text position - wxCoord widthText, heightText, heightLine; - GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine); - - wxCoord width, height; - if ( bitmap.Ok() ) - { - width = widthText + bitmap.GetWidth(); - height = bitmap.GetHeight(); - } - else // no bitmap - { - width = widthText; - height = heightText; - } - - wxCoord x, y; - if ( alignment & wxALIGN_RIGHT ) - { - x = rect.GetRight() - width; - } - else if ( alignment & wxALIGN_CENTRE_HORIZONTAL ) - { - x = (rect.GetLeft() + rect.GetRight() + 1 - width) / 2; - } - else // alignment & wxALIGN_LEFT - { - x = rect.GetLeft(); - } - - if ( alignment & wxALIGN_BOTTOM ) - { - y = rect.GetBottom() - height; - } - else if ( alignment & wxALIGN_CENTRE_VERTICAL ) - { - y = (rect.GetTop() + rect.GetBottom() + 1 - height) / 2; - } - else // alignment & wxALIGN_TOP - { - y = rect.GetTop(); - } - - // draw the bitmap first - wxCoord x0 = x, - y0 = y, - width0 = width; - if ( bitmap.Ok() ) - { - DrawBitmap(bitmap, x, y, true /* use mask */); - - wxCoord offset = bitmap.GetWidth() + 4; - x += offset; - width -= offset; - - y += (height - heightText) / 2; - } - - // we will draw the underscore under the accel char later - wxCoord startUnderscore = 0, - endUnderscore = 0, - yUnderscore = 0; - - // split the string into lines and draw each of them separately - wxString curLine; - for ( wxString::const_iterator pc = text.begin(); ; ++pc ) - { - if ( pc == text.end() || *pc == _T('\n') ) - { - int xRealStart = x; // init it here to avoid compielr warnings - - if ( !curLine.empty() ) - { - // NB: can't test for !(alignment & wxALIGN_LEFT) because - // wxALIGN_LEFT is 0 - if ( alignment & (wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL) ) - { - wxCoord widthLine; - GetTextExtent(curLine, &widthLine, NULL); - - if ( alignment & wxALIGN_RIGHT ) - { - xRealStart += width - widthLine; - } - else // if ( alignment & wxALIGN_CENTRE_HORIZONTAL ) - { - xRealStart += (width - widthLine) / 2; - } - } - //else: left aligned, nothing to do - - DrawText(curLine, xRealStart, y); - } - - y += heightLine; - - // do we have underscore in this line? we can check yUnderscore - // because it is set below to just y + heightLine if we do - if ( y == yUnderscore ) - { - // adjust the horz positions to account for the shift - startUnderscore += xRealStart; - endUnderscore += xRealStart; - } - - if ( pc == text.end() ) - break; - - curLine.clear(); - } - else // not end of line - { - if ( pc - text.begin() == indexAccel ) - { - // remeber to draw underscore here - GetTextExtent(curLine, &startUnderscore, NULL); - curLine += *pc; - GetTextExtent(curLine, &endUnderscore, NULL); - - yUnderscore = y + heightLine; - } - else - { - curLine += *pc; - } - } - } - - // draw the underscore if found - if ( startUnderscore != endUnderscore ) - { - // it should be of the same colour as text - SetPen(wxPen(GetTextForeground(), 0, wxSOLID)); - - yUnderscore--; - - DrawLine(startUnderscore, yUnderscore, endUnderscore, yUnderscore); - } - - // return bounding rect if requested - if ( rectBounding ) - { - *rectBounding = wxRect(x, y - heightText, widthText, heightText); - } - - CalcBoundingBox(x0, y0); - CalcBoundingBox(x0 + width0, y0 + height); -} - - -void wxDCBase::DoGradientFillLinear(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - wxDirection nDirection) -{ - // save old pen - wxPen oldPen = m_pen; - wxBrush oldBrush = m_brush; - - wxUint8 nR1 = initialColour.Red(); - wxUint8 nG1 = initialColour.Green(); - wxUint8 nB1 = initialColour.Blue(); - wxUint8 nR2 = destColour.Red(); - wxUint8 nG2 = destColour.Green(); - wxUint8 nB2 = destColour.Blue(); - wxUint8 nR, nG, nB; - - if ( nDirection == wxEAST || nDirection == wxWEST ) - { - wxInt32 x = rect.GetWidth(); - wxInt32 w = x; // width of area to shade - wxInt32 xDelta = w/256; // height of one shade bend - if (xDelta < 1) - xDelta = 1; - - while (x >= xDelta) - { - x -= xDelta; - if (nR1 > nR2) - nR = nR1 - (nR1-nR2)*(w-x)/w; - else - nR = nR1 + (nR2-nR1)*(w-x)/w; - - if (nG1 > nG2) - nG = nG1 - (nG1-nG2)*(w-x)/w; - else - nG = nG1 + (nG2-nG1)*(w-x)/w; - - if (nB1 > nB2) - nB = nB1 - (nB1-nB2)*(w-x)/w; - else - nB = nB1 + (nB2-nB1)*(w-x)/w; - - wxColour colour(nR,nG,nB); - SetPen(wxPen(colour, 1, wxSOLID)); - SetBrush(wxBrush(colour)); - if(nDirection == wxEAST) - DrawRectangle(rect.GetRight()-x-xDelta+1, rect.GetTop(), - xDelta, rect.GetHeight()); - else //nDirection == wxWEST - DrawRectangle(rect.GetLeft()+x, rect.GetTop(), - xDelta, rect.GetHeight()); - } - } - else // nDirection == wxNORTH || nDirection == wxSOUTH - { - wxInt32 y = rect.GetHeight(); - wxInt32 w = y; // height of area to shade - wxInt32 yDelta = w/255; // height of one shade bend - if (yDelta < 1) - yDelta = 1; - - while (y > 0) - { - y -= yDelta; - if (nR1 > nR2) - nR = nR1 - (nR1-nR2)*(w-y)/w; - else - nR = nR1 + (nR2-nR1)*(w-y)/w; - - if (nG1 > nG2) - nG = nG1 - (nG1-nG2)*(w-y)/w; - else - nG = nG1 + (nG2-nG1)*(w-y)/w; - - if (nB1 > nB2) - nB = nB1 - (nB1-nB2)*(w-y)/w; - else - nB = nB1 + (nB2-nB1)*(w-y)/w; - - wxColour colour(nR,nG,nB); - SetPen(wxPen(colour, 1, wxSOLID)); - SetBrush(wxBrush(colour)); - if(nDirection == wxNORTH) - DrawRectangle(rect.GetLeft(), rect.GetTop()+y, - rect.GetWidth(), yDelta); - else //nDirection == wxSOUTH - DrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta+1, - rect.GetWidth(), yDelta); - } - } - - SetPen(oldPen); - SetBrush(oldBrush); -} - -void wxDCBase::DoGradientFillConcentric(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - const wxPoint& circleCenter) -{ - //save the old pen color - wxColour oldPenColour = m_pen.GetColour(); - - wxUint8 nR1 = destColour.Red(); - wxUint8 nG1 = destColour.Green(); - wxUint8 nB1 = destColour.Blue(); - wxUint8 nR2 = initialColour.Red(); - wxUint8 nG2 = initialColour.Green(); - wxUint8 nB2 = initialColour.Blue(); - wxUint8 nR, nG, nB; - - - //Radius - wxInt32 cx = rect.GetWidth() / 2; - wxInt32 cy = rect.GetHeight() / 2; - wxInt32 nRadius; - if (cx < cy) - nRadius = cx; - else - nRadius = cy; - - //Offset of circle - wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2); - wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2); - - for ( wxInt32 x = 0; x < rect.GetWidth(); x++ ) - { - for ( wxInt32 y = 0; y < rect.GetHeight(); y++ ) - { - //get color difference - wxInt32 nGradient = ((nRadius - - (wxInt32)sqrt( - pow((double)(x - cx - nCircleOffX), 2) + - pow((double)(y - cy - nCircleOffY), 2) - )) * 100) / nRadius; - - //normalize Gradient - if (nGradient < 0 ) - nGradient = 0; - - //get dest colors - nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100)); - nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100)); - nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100)); - - //set the pixel - m_pen.SetColour(wxColour(nR,nG,nB)); - DrawPoint(wxPoint(x + rect.GetLeft(), y + rect.GetTop())); - } - } - //return old pen color - m_pen.SetColour(oldPenColour); -} - -/* -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 wxDCBase::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 wxDCBase::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 wxDCBase::CalculateEllipticPoints( wxPointList* points, - wxCoord xStart, wxCoord yStart, - wxCoord w, wxCoord h, - double sa, double ea ) +void wxDCImpl::CalculateEllipticPoints( wxPointList* points, + wxCoord xStart, wxCoord yStart, + wxCoord w, wxCoord h, + double sa, double ea ) { double pi = M_PI; double sar = 0; @@ -2754,4 +1649,14 @@ void wxDCBase::CalculateEllipticPoints( wxPointList* points, #endif // __WXWINCE__ -#endif // wxUSE_NEW_DC +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; +}