X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/28b4db7f890258e83fa0a57ea85c72585e48b756..b81e45065986abc34676fecc31515efeb3f3a8d4:/src/common/dcbase.cpp diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp index 77b09b154b..224cf624a1 100644 --- a/src/common/dcbase.cpp +++ b/src/common/dcbase.cpp @@ -1,11 +1,11 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: common/dcbase.cpp +// Name: src/common/dcbase.cpp // Purpose: generic methods of the wxDC Class // Author: Vadim Zeitlin // Modified by: // Created: 05/25/99 // RCS-ID: $Id$ -// Copyright: (c) wxWindows team +// Copyright: (c) wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -13,10 +13,6 @@ // declarations // ============================================================================ -#ifdef __GNUG__ - #pragma implementation "dcbase.h" -#endif - // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- @@ -29,29 +25,614 @@ #endif #include "wx/dc.h" +#include "wx/dcclient.h" +#include "wx/dcmemory.h" +#include "wx/dcscreen.h" +#include "wx/dcprint.h" +#include "wx/prntbase.h" + +#ifndef WX_PRECOMP + #include "wx/math.h" + #include "wx/module.h" +#endif -#include +#ifdef __WXMSW__ + #include "wx/msw/dcclient.h" + #include "wx/msw/dcmemory.h" + #include "wx/msw/dcscreen.h" +#endif -// bool wxDCBase::sm_cacheing = FALSE; +#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 -// ============================================================================ -// implementation -// ============================================================================ +#ifdef __WXMAC__ + #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 + +//---------------------------------------------------------------------------- +// wxDCFactory +//---------------------------------------------------------------------------- + +wxDCFactory *wxDCFactory::m_factory = NULL; + +void wxDCFactory::Set(wxDCFactory *factory) +{ + delete m_factory; + + m_factory = factory; +} + +wxDCFactory *wxDCFactory::Get() +{ + if ( !m_factory ) + m_factory = new wxNativeDCFactory; + + 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, wxWindow *window ) +{ + wxDCImpl * const impl = new wxWindowDCImpl( owner, window ); + impl->InheritAttributes(window); + return impl; +} + +wxDCImpl* wxNativeDCFactory::CreateClientDC( wxClientDC *owner, wxWindow *window ) +{ + wxDCImpl * const impl = new wxClientDCImpl( owner, window ); + impl->InheritAttributes(window); + return impl; +} + +wxDCImpl* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner, wxWindow *window ) +{ + wxDCImpl * const impl = new wxPaintDCImpl( owner, window ); + impl->InheritAttributes(window); + return impl; +} + +wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner ) +{ + return new wxMemoryDCImpl( owner ); +} + +wxDCImpl* wxNativeDCFactory::CreateMemoryDC(wxMemoryDC *owner, wxBitmap& 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 ) +{ + return new wxMemoryDCImpl( owner, dc ); +} + +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_ABSTRACT_CLASS(wxWindowDC, wxDC) + +wxWindowDC::wxWindowDC(wxWindow *win) + : wxDC(wxDCFactory::Get()->CreateWindowDC(this, win)) +{ +} + +//----------------------------------------------------------------------------- +// wxClientDC +//----------------------------------------------------------------------------- + +IMPLEMENT_ABSTRACT_CLASS(wxClientDC, wxWindowDC) + +wxClientDC::wxClientDC(wxWindow *win) + : wxWindowDC(wxDCFactory::Get()->CreateClientDC(this, win)) +{ +} + +//----------------------------------------------------------------------------- +// wxMemoryDC +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC) + +wxMemoryDC::wxMemoryDC() + : wxDC(wxDCFactory::Get()->CreateMemoryDC(this)) +{ +} + +wxMemoryDC::wxMemoryDC(wxBitmap& bitmap) + : wxDC(wxDCFactory::Get()->CreateMemoryDC(this, bitmap)) +{ +} + +wxMemoryDC::wxMemoryDC(wxDC *dc) + : wxDC(wxDCFactory::Get()->CreateMemoryDC(this, dc)) +{ +} + +void wxMemoryDC::SelectObject(wxBitmap& bmp) +{ + // make sure that the given wxBitmap is not sharing its data with other + // wxBitmap instances as its contents will be modified by any drawing + // operation done on this DC + if (bmp.IsOk()) + bmp.UnShare(); + + GetImpl()->DoSelect(bmp); +} + +void wxMemoryDC::SelectObjectAsSource(const wxBitmap& bmp) +{ + GetImpl()->DoSelect(bmp); +} + +const wxBitmap& wxMemoryDC::GetSelectedBitmap() const +{ + return GetImpl()->GetSelectedBitmap(); +} + +wxBitmap& wxMemoryDC::GetSelectedBitmap() +{ + return GetImpl()->GetSelectedBitmap(); +} + + +//----------------------------------------------------------------------------- +// wxPaintDC +//----------------------------------------------------------------------------- + +IMPLEMENT_ABSTRACT_CLASS(wxPaintDC, wxClientDC) + +wxPaintDC::wxPaintDC(wxWindow *win) + : wxClientDC(wxDCFactory::Get()->CreatePaintDC(this, win)) +{ +} + +//----------------------------------------------------------------------------- +// wxScreenDC +//----------------------------------------------------------------------------- + +IMPLEMENT_DYNAMIC_CLASS(wxScreenDC, wxWindowDC) + +wxScreenDC::wxScreenDC() + : wxDC(wxDCFactory::Get()->CreateScreenDC(this)) +{ +} + +//----------------------------------------------------------------------------- +// wxPrinterDC +//----------------------------------------------------------------------------- + +#if wxUSE_PRINTING_ARCHITECTURE + +IMPLEMENT_DYNAMIC_CLASS(wxPrinterDC, wxDC) + +wxPrinterDC::wxPrinterDC() + : wxDC(wxDCFactory::Get()->CreatePrinterDC(this, wxPrintData())) +{ +} + +wxPrinterDC::wxPrinterDC(const wxPrintData& data) + : wxDC(wxDCFactory::Get()->CreatePrinterDC(this, data)) +{ +} + +wxRect wxPrinterDC::GetPaperRect() const +{ + return GetImpl()->GetPaperRect(); +} + +int wxPrinterDC::GetResolution() const +{ + return GetImpl()->GetResolution(); +} + +#endif // wxUSE_PRINTING_ARCHITECTURE + +//----------------------------------------------------------------------------- +// wxDCImpl +//----------------------------------------------------------------------------- + +IMPLEMENT_ABSTRACT_CLASS(wxDCImpl, wxObject) + +wxDCImpl::wxDCImpl( wxDC *owner ) + : m_window(NULL) + , 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(wxBRUSHSTYLE_TRANSPARENT) + , m_mappingMode(wxMM_TEXT) + , m_pen() + , m_brush() + , m_backgroundBrush() + , m_textForegroundColour(*wxBLACK) + , m_textBackgroundColour(*wxWHITE) + , m_font() +#if wxUSE_PALETTE + , m_palette() + , m_hasCustomPalette(false) +#endif // wxUSE_PALETTE +{ + m_owner = owner; + + m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() / + (double)wxGetDisplaySizeMM().GetWidth(); + m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / + (double)wxGetDisplaySizeMM().GetHeight(); + + ResetBoundingBox(); + ResetClipping(); +} + +wxDCImpl::~wxDCImpl() +{ +} // ---------------------------------------------------------------------------- -// special symbols +// coordinate conversions and transforms // ---------------------------------------------------------------------------- -void wxDCBase::DoDrawCheckMark(wxCoord x1, wxCoord y1, +wxCoord wxDCImpl::DeviceToLogicalX(wxCoord x) const +{ + 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_signY) / m_scaleY ) + m_logicalOriginY ; +} + +wxCoord wxDCImpl::DeviceToLogicalXRel(wxCoord x) const +{ + return wxRound((double)(x) / m_scaleX); +} + +wxCoord wxDCImpl::DeviceToLogicalYRel(wxCoord y) const +{ + return wxRound((double)(y) / m_scaleY); +} + +wxCoord wxDCImpl::LogicalToDeviceX(wxCoord x) const +{ + 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_signY) * m_scaleY) + m_deviceOriginY + m_deviceLocalOriginY; +} + +wxCoord wxDCImpl::LogicalToDeviceXRel(wxCoord x) const +{ + return wxRound((double)(x) * m_scaleX); +} + +wxCoord wxDCImpl::LogicalToDeviceYRel(wxCoord y) const +{ + return wxRound((double)(y) * m_scaleY); +} + +void wxDCImpl::ComputeScaleAndOrigin() +{ + m_scaleX = m_logicalScaleX * m_userScaleX; + m_scaleY = m_logicalScaleY * m_userScaleY; +} + +void wxDCImpl::SetMapMode( wxMappingMode 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 wxDCImpl::SetUserScale( double x, double y ) +{ + // allow negative ? -> no + m_userScaleX = x; + m_userScaleY = y; + ComputeScaleAndOrigin(); +} + +void wxDCImpl::SetLogicalScale( double x, double y ) +{ + // allow negative ? + m_logicalScaleX = x; + m_logicalScaleY = y; + ComputeScaleAndOrigin(); +} + +void wxDCImpl::SetLogicalOrigin( wxCoord x, wxCoord y ) +{ + m_logicalOriginX = x * m_signX; + m_logicalOriginY = y * m_signY; + ComputeScaleAndOrigin(); +} + +void wxDCImpl::SetDeviceOrigin( wxCoord x, wxCoord y ) +{ + m_deviceOriginX = x; + m_deviceOriginY = y; + ComputeScaleAndOrigin(); +} + +void wxDCImpl::SetDeviceLocalOrigin( wxCoord x, wxCoord y ) +{ + m_deviceLocalOriginX = x; + m_deviceLocalOriginY = y; + ComputeScaleAndOrigin(); +} + +void wxDCImpl::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(); +} + + +// 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 wxDCImpl::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 + { + DoGetTextExtent(c, &w, &h); + if (c_int < FWC_SIZE) + s_fontWidthCache.m_widths[c_int] = w; + } + + totalWidth += w; + widths[i] = totalWidth; + } + + return true; +} + +void wxDCImpl::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 + DoGetTextExtent(_T("W"), NULL, &heightLineDefault, + NULL, NULL, font); + } + + heightTextTotal += heightLineDefault; + } + else + { + DoGetTextExtent(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 wxDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height) { - wxCHECK_RET( Ok(), wxT("invalid window dc") ); + wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxCoord x2 = x1 + width, y2 = y1 + height; - // this is to yield width of 3 for width == height == 10 - SetPen(wxPen(GetTextForeground(), (width + height + 1) / 7, wxSOLID)); + // the pen width is calibrated to give 3 for width == height == 10 + wxDCPenChanger pen( *m_owner, 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 @@ -63,19 +644,47 @@ void wxDCBase::DoDrawCheckMark(wxCoord x1, wxCoord y1, CalcBoundingBox(x2, y2); } -// ---------------------------------------------------------------------------- -// line/polygons -// ---------------------------------------------------------------------------- +bool +wxDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest, + wxCoord dstWidth, wxCoord dstHeight, + wxDC *source, + wxCoord xsrc, wxCoord ysrc, + wxCoord srcWidth, wxCoord srcHeight, + wxRasterOperationMode 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); -void wxDCBase::DrawLines(const wxList *list, wxCoord xoffset, wxCoord yoffset) + return rc; +} + +void wxDCImpl::DrawLines(const wxPointList *list, wxCoord xoffset, wxCoord yoffset) { int n = list->GetCount(); wxPoint *points = new wxPoint[n]; int i = 0; - for ( wxList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ ) + for ( wxPointList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ ) { - wxPoint *point = (wxPoint *)node->GetData(); + wxPoint *point = node->GetData(); points[i].x = point->x; points[i].y = point->y; } @@ -85,18 +694,17 @@ void wxDCBase::DrawLines(const wxList *list, wxCoord xoffset, wxCoord yoffset) delete [] points; } - -void wxDCBase::DrawPolygon(const wxList *list, +void wxDCImpl::DrawPolygon(const wxPointList *list, wxCoord xoffset, wxCoord yoffset, - int fillStyle) + wxPolygonFillMode fillStyle) { int n = list->GetCount(); wxPoint *points = new wxPoint[n]; int i = 0; - for ( wxList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ ) + for ( wxPointList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ ) { - wxPoint *point = (wxPoint *)node->GetData(); + wxPoint *point = node->GetData(); points[i].x = point->x; points[i].y = point->y; } @@ -106,45 +714,64 @@ void wxDCBase::DrawPolygon(const wxList *list, delete [] points; } -// ---------------------------------------------------------------------------- -// splines -// ---------------------------------------------------------------------------- - -#if wxUSE_SPLINES - -// TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?) -void wxDCBase::DrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3) +void +wxDCImpl::DoDrawPolyPolygon(int n, + int count[], + wxPoint points[], + wxCoord xoffset, wxCoord yoffset, + wxPolygonFillMode fillStyle) { - wxList point_list; - - wxPoint *point1 = new wxPoint; - point1->x = x1; point1->y = y1; - point_list.Append((wxObject*)point1); - - wxPoint *point2 = new wxPoint; - point2->x = x2; point2->y = y2; - point_list.Append((wxObject*)point2); + if ( n == 1 ) + { + DoDrawPolygon(count[0], points, xoffset, yoffset, fillStyle); + return; + } - wxPoint *point3 = new wxPoint; - point3->x = x3; point3->y = y3; - point_list.Append((wxObject*)point3); + int i, j, lastOfs; + wxPoint* pts; + wxPen pen; - DrawSpline(&point_list); + 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]; + } - for( wxList::compatibility_iterator node = point_list.GetFirst(); node; node = node->GetNext() ) + pen = GetPen(); + SetPen(wxPen(*wxBLACK, 0, wxPENSTYLE_TRANSPARENT)); + DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle); + SetPen(pen); + for (i = j = 0; i < n; i++) { - wxPoint *p = (wxPoint *)node->GetData(); - delete p; + DoDrawLines(count[i], pts+j, xoffset, yoffset); + j += count[i]; } + delete[] pts; } -void wxDCBase::DrawSpline(int n, wxPoint points[]) +#if wxUSE_SPLINES + +void wxDCImpl::DrawSpline(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord x3, wxCoord y3) { - wxList list; - for (int i =0; i < n; i++) - { - list.Append((wxObject*)&points[i]); - } + wxPoint points[] = { wxPoint(x1, y1), wxPoint(x2, y2), wxPoint(x3, y3) }; + DrawSpline(WXSIZEOF(points), points); +} + +void wxDCImpl::DrawSpline(int n, wxPoint points[]) +{ + wxPointList list; + for ( int i = 0; i < n; i++ ) + list.Append(&points[i]); DrawSpline(&list); } @@ -159,9 +786,9 @@ int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3, 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); +static void wx_spline_draw_point_array(wxDC *dc); -wxList wx_spline_point_list; +wxPointList wx_spline_point_list; #define half(z1, z2) ((z1+z2)/2.0) #define THRESHOLD 5 @@ -244,42 +871,44 @@ int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, static bool wx_spline_add_point(double x, double y) { - wxPoint *point = new wxPoint ; - point->x = (int) x; - point->y = (int) y; - wx_spline_point_list.Append((wxObject*)point); - return TRUE; + 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) +static void wx_spline_draw_point_array(wxDC *dc) { - dc->DrawLines(&wx_spline_point_list, 0, 0 ); - wxList::compatibility_iterator node = wx_spline_point_list.GetFirst(); - while (node) - { - wxPoint *point = (wxPoint *)node->GetData(); - delete point; - wx_spline_point_list.Erase(node); - node = wx_spline_point_list.GetFirst(); - } + 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(); + } } -void wxDCBase::DoDrawSpline( wxList *points ) +void wxDCImpl::DoDrawSpline( const wxPointList *points ) { - wxCHECK_RET( Ok(), wxT("invalid window dc") ); + wxCHECK_RET( IsOk(), wxT("invalid window dc") ); wxPoint *p; double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; double x1, y1, x2, y2; - wxList::compatibility_iterator node = points->GetFirst(); + wxPointList::compatibility_iterator node = points->GetFirst(); + if (!node) + // empty list + return; + p = (wxPoint *)node->GetData(); x1 = p->x; y1 = p->y; node = node->GetNext(); - p = (wxPoint *)node->GetData(); + p = node->GetData(); x2 = p->x; y2 = p->y; @@ -296,7 +925,7 @@ void wxDCBase::DoDrawSpline( wxList *points ) #endif // !wxUSE_STL ) { - p = (wxPoint *)node->GetData(); + p = node->GetData(); x1 = x2; y1 = y2; x2 = p->x; @@ -317,83 +946,185 @@ void wxDCBase::DoDrawSpline( wxList *points ) wx_spline_add_point( cx1, cy1 ); wx_spline_add_point( x2, y2 ); - wx_spline_draw_point_array( this ); + wx_spline_draw_point_array( m_owner ); } #endif // wxUSE_SPLINES -// ---------------------------------------------------------------------------- -// enhanced text drawing -// ---------------------------------------------------------------------------- -void wxDCBase::GetMultiLineTextExtent(const wxString& text, - wxCoord *x, - wxCoord *y, - wxCoord *h, - wxFont *font) -{ - wxCoord widthTextMax = 0, widthLine, - heightTextTotal = 0, heightLineDefault = 0, heightLine = 0; - wxString curLine; - for ( const wxChar *pc = text; ; pc++ ) +void wxDCImpl::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 ) { - if ( *pc == _T('\n') || *pc == _T('\0') ) + 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) { - 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 + x -= xDelta; + if (nR1 > nR2) + nR = nR1 - (nR1-nR2)*(w-x)/w; + else + nR = nR1 + (nR2-nR1)*(w-x)/w; - // assume that this line has the same height as the previous - // one - if ( !heightLineDefault ) - heightLineDefault = heightLine; + if (nG1 > nG2) + nG = nG1 - (nG1-nG2)*(w-x)/w; + else + nG = nG1 + (nG2-nG1)*(w-x)/w; - if ( !heightLineDefault ) - { - // but we don't know it yet - choose something reasonable - GetTextExtent(_T("W"), NULL, &heightLineDefault, - NULL, NULL, font); - } + 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, wxPENSTYLE_SOLID)); + SetBrush(wxBrush(colour)); + if(nDirection == wxEAST) + DoDrawRectangle(rect.GetRight()-x-xDelta+1, rect.GetTop(), + xDelta, rect.GetHeight()); + else //nDirection == wxWEST + DoDrawRectangle(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; - heightTextTotal += heightLineDefault; - } + while (y > 0) + { + y -= yDelta; + if (nR1 > nR2) + nR = nR1 - (nR1-nR2)*(w-y)/w; else - { - GetTextExtent(curLine, &widthLine, &heightLine, - NULL, NULL, font); - if ( widthLine > widthTextMax ) - widthTextMax = widthLine; - heightTextTotal += heightLine; - } + nR = nR1 + (nR2-nR1)*(w-y)/w; - if ( *pc == _T('\n') ) - { - curLine.clear(); - } + if (nG1 > nG2) + nG = nG1 - (nG1-nG2)*(w-y)/w; else - { - // the end of string - break; - } + 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, wxPENSTYLE_SOLID)); + SetBrush(wxBrush(colour)); + if(nDirection == wxNORTH) + DoDrawRectangle(rect.GetLeft(), rect.GetTop()+y, + rect.GetWidth(), yDelta); + else //nDirection == wxSOUTH + DoDrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta+1, + rect.GetWidth(), yDelta); } - else + } + + SetPen(oldPen); + SetBrush(oldBrush); +} + +void wxDCImpl::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++ ) { - curLine += *pc; + //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)); + DoDrawPoint(x + rect.GetLeft(), y + rect.GetTop()); } } + //return old pen color + m_pen.SetColour(oldPenColour); +} - if ( x ) - *x = widthTextMax; - if ( y ) - *y = heightTextTotal; - if ( h ) - *h = heightLine; +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())); } -void wxDCBase::DrawLabel(const wxString& text, +//----------------------------------------------------------------------------- +// wxDC +//----------------------------------------------------------------------------- + +IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject) + +void wxDC::DrawLabel(const wxString& text, const wxBitmap& bitmap, const wxRect& rect, int alignment, @@ -449,7 +1180,7 @@ void wxDCBase::DrawLabel(const wxString& text, width0 = width; if ( bitmap.Ok() ) { - DrawBitmap(bitmap, x, y, TRUE /* use mask */); + DrawBitmap(bitmap, x, y, true /* use mask */); wxCoord offset = bitmap.GetWidth() + 4; x += offset; @@ -465,9 +1196,9 @@ void wxDCBase::DrawLabel(const wxString& text, // split the string into lines and draw each of them separately wxString curLine; - for ( const wxChar *pc = text; ; pc++ ) + for ( wxString::const_iterator pc = text.begin(); ; ++pc ) { - if ( *pc == _T('\n') || *pc == _T('\0') ) + if ( pc == text.end() || *pc == '\n' ) { int xRealStart = x; // init it here to avoid compielr warnings @@ -505,14 +1236,14 @@ void wxDCBase::DrawLabel(const wxString& text, endUnderscore += xRealStart; } - if ( *pc == _T('\0') ) + if ( pc == text.end() ) break; curLine.clear(); } else // not end of line { - if ( pc - text.c_str() == indexAccel ) + if ( pc - text.begin() == indexAccel ) { // remeber to draw underscore here GetTextExtent(curLine, &startUnderscore, NULL); @@ -532,7 +1263,7 @@ void wxDCBase::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--; @@ -548,3 +1279,384 @@ void wxDCBase::DrawLabel(const wxString& text, CalcBoundingBox(x0, y0); CalcBoundingBox(x0 + width0, y0 + height); } + +#if WXWIN_COMPATIBILITY_2_8 + // for compatibility with the old code when wxCoord was long everywhere +void wxDC::GetTextExtent(const wxString& string, + long *x, long *y, + long *descent, + long *externalLeading, + const wxFont *theFont) const + { + wxCoord x2, y2, descent2, externalLeading2; + m_pimpl->DoGetTextExtent(string, &x2, &y2, + &descent2, &externalLeading2, + theFont); + if ( x ) + *x = x2; + if ( y ) + *y = y2; + if ( descent ) + *descent = descent2; + if ( externalLeading ) + *externalLeading = externalLeading2; + } + +void wxDC::GetLogicalOrigin(long *x, long *y) const + { + wxCoord x2, y2; + m_pimpl->DoGetLogicalOrigin(&x2, &y2); + if ( x ) + *x = x2; + if ( y ) + *y = y2; + } + +void wxDC::GetDeviceOrigin(long *x, long *y) const + { + wxCoord x2, y2; + m_pimpl->DoGetDeviceOrigin(&x2, &y2); + if ( x ) + *x = x2; + if ( y ) + *y = y2; + } + +void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const + { + wxCoord xx,yy,ww,hh; + m_pimpl->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 + +/* +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; +}