X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c933e267beed72a1c535c8d30ac930fc80587add..7198c3368055d88249a338eb33b21f051f674806:/src/common/dcbase.cpp?ds=inline diff --git a/src/common/dcbase.cpp b/src/common/dcbase.cpp index 1d0505599a..d1e8ddea76 100644 --- a/src/common/dcbase.cpp +++ b/src/common/dcbase.cpp @@ -30,6 +30,7 @@ #include "wx/dcscreen.h" #include "wx/dcprint.h" #include "wx/prntbase.h" +#include "wx/scopeguard.h" #ifndef WX_PRECOMP #include "wx/math.h" @@ -131,34 +132,25 @@ 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 ) @@ -166,9 +158,19 @@ wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner ) return new wxMemoryDCImpl( owner ); } -wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) +wxDCImpl* wxNativeDCFactory::CreateMemoryDC(wxMemoryDC *owner, wxBitmap& bitmap) { - return new wxMemoryDCImpl( owner, bitmap ); + // the bitmap may be modified when it's selected into a memory DC so make + // sure changing this bitmap doesn't affect any other shallow copies of it + // (see wxMemoryDC::SelectObject()) + // + // notice that we don't provide any ctor equivalent to SelectObjectAsSource + // method because this should be rarely needed and easy to work around by + // using the default ctor and calling SelectObjectAsSource itself + if ( bitmap.IsOk() ) + bitmap.UnShare(); + + return new wxMemoryDCImpl(owner, bitmap); } wxDCImpl* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) @@ -234,6 +236,12 @@ wxMemoryDC::wxMemoryDC(wxDC *dc) void wxMemoryDC::SelectObject(wxBitmap& bmp) { + if ( bmp.IsSameAs(GetSelectedBitmap()) ) + { + // Nothing to do, this bitmap is already selected. + return; + } + // 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 @@ -299,12 +307,12 @@ wxPrinterDC::wxPrinterDC(const wxPrintData& data) { } -wxRect wxPrinterDC::GetPaperRect() +wxRect wxPrinterDC::GetPaperRect() const { return GetImpl()->GetPaperRect(); } -int wxPrinterDC::GetResolution() +int wxPrinterDC::GetResolution() const { return GetImpl()->GetResolution(); } @@ -412,7 +420,7 @@ void wxDCImpl::ComputeScaleAndOrigin() m_scaleY = m_logicalScaleY * m_userScaleY; } -void wxDCImpl::SetMapMode( int mode ) +void wxDCImpl::SetMapMode( wxMappingMode mode ) { switch (mode) { @@ -568,7 +576,7 @@ void wxDCImpl::GetMultiLineTextExtent(const wxString& text, wxString curLine; for ( wxString::const_iterator pc = text.begin(); ; ++pc ) { - if ( pc == text.end() || *pc == _T('\n') ) + if ( pc == text.end() || *pc == wxT('\n') ) { if ( curLine.empty() ) { @@ -584,7 +592,7 @@ void wxDCImpl::GetMultiLineTextExtent(const wxString& text, if ( !heightLineDefault ) { // but we don't know it yet - choose something reasonable - DoGetTextExtent(_T("W"), NULL, &heightLineDefault, + DoGetTextExtent(wxT("W"), NULL, &heightLineDefault, NULL, NULL, font); } @@ -649,13 +657,13 @@ wxDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest, wxDC *source, wxCoord xsrc, wxCoord ysrc, wxCoord srcWidth, wxCoord srcHeight, - int rop, + wxRasterOperationMode rop, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) { wxCHECK_MSG( srcWidth && srcHeight && dstWidth && dstHeight, false, - _T("invalid blit size") ); + wxT("invalid blit size") ); // emulate the stretching by modifying the DC scale double xscale = (double)srcWidth/dstWidth, @@ -695,7 +703,7 @@ 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]; @@ -718,7 +726,7 @@ wxDCImpl::DoDrawPolyPolygon(int n, int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, - int fillStyle) + wxPolygonFillMode fillStyle) { if ( n == 1 ) { @@ -728,7 +736,6 @@ wxDCImpl::DoDrawPolyPolygon(int n, int i, j, lastOfs; wxPoint* pts; - wxPen pen; for (i = j = lastOfs = 0; i < n; i++) { @@ -744,10 +751,11 @@ wxDCImpl::DoDrawPolyPolygon(int n, pts[j++] = pts[lastOfs]; } - pen = GetPen(); - SetPen(wxPen(*wxBLACK, 0, wxPENSTYLE_TRANSPARENT)); - DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle); - SetPen(pen); + { + wxDCPenChanger setTransp(*m_owner, *wxTRANSPARENT_PEN); + DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle); + } + for (i = j = 0; i < n; i++) { DoDrawLines(count[i], pts+j, xoffset, yoffset); @@ -787,7 +795,7 @@ void wx_spline_push(double x1, double y1, double x2, double y2, double x3, doubl static bool wx_spline_add_point(double x, double y); static void wx_spline_draw_point_array(wxDC *dc); -wxPointList wx_spline_point_list; +static wxPointList wx_spline_point_list; #define half(z1, z2) ((z1+z2)/2.0) #define THRESHOLD 5 @@ -919,9 +927,9 @@ void wxDCImpl::DoDrawSpline( const wxPointList *points ) wx_spline_add_point(x1, y1); while ((node = node->GetNext()) -#if !wxUSE_STL +#if !wxUSE_STD_CONTAINERS != NULL -#endif // !wxUSE_STL +#endif // !wxUSE_STD_CONTAINERS ) { p = node->GetData(); @@ -1053,8 +1061,9 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, const wxColour& destColour, const wxPoint& circleCenter) { - //save the old pen color - wxColour oldPenColour = m_pen.GetColour(); + // save the old pen and ensure it is restored on exit + const wxPen penOrig = m_pen; + wxON_BLOCK_EXIT_SET(m_pen, penOrig); wxUint8 nR1 = destColour.Red(); wxUint8 nG1 = destColour.Green(); @@ -1066,45 +1075,84 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, //Radius - wxInt32 cx = rect.GetWidth() / 2; - wxInt32 cy = rect.GetHeight() / 2; - wxInt32 nRadius; + double cx = rect.GetWidth() / 2; + double cy = rect.GetHeight() / 2; + double dRadius; if (cx < cy) - nRadius = cx; + dRadius = cx; else - nRadius = cy; + dRadius = cy; //Offset of circle - wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2); - wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2); + double ptX, ptY; + ptX = circleCenter.x; + ptY = circleCenter.y; + double nCircleOffX = ptX - cx; + double nCircleOffY = ptY - cy; + + double dGradient; + double dx, dy; 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; + dx = x; + dy = y; + + dGradient = ((dRadius - sqrt( (dx - cx - nCircleOffX) * (dx - cx - nCircleOffX) + +(dy - cy - nCircleOffY) * (dy - cy - nCircleOffY) + ) + ) * 100 + ) / dRadius; //normalize Gradient - if (nGradient < 0 ) - nGradient = 0; + if (dGradient < 0) + dGradient = 0.0; //get dest colors - nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100)); - nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100)); - nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100)); + nR = (wxUint8)(nR1 + ((nR2 - nR1) * dGradient / 100)); + nG = (wxUint8)(nG1 + ((nG2 - nG1) * dGradient / 100)); + nB = (wxUint8)(nB1 + ((nB2 - nB1) * dGradient / 100)); //set the pixel - m_pen.SetColour(wxColour(nR,nG,nB)); + SetPen(wxColour(nR,nG,nB)); DoDrawPoint(x + rect.GetLeft(), y + rect.GetTop()); } } - //return old pen color - m_pen.SetColour(oldPenColour); +} + +void wxDCImpl::InheritAttributes(wxWindow *win) +{ + wxCHECK_RET( win, "window can't be NULL" ); + + SetFont(win->GetFont()); + SetTextForeground(win->GetForegroundColour()); + SetTextBackground(win->GetBackgroundColour()); + SetBackground(win->GetBackgroundColour()); + SetLayoutDirection(win->GetLayoutDirection()); +} + +void wxDCImpl::DoGetFontMetrics(int *height, + int *ascent, + int *descent, + int *internalLeading, + int *externalLeading, + int *averageWidth) const +{ + // Average width is typically the same as width of 'x'. + wxCoord h, d; + DoGetTextExtent("x", averageWidth, &h, &d, externalLeading); + + if ( height ) + *height = h; + if ( ascent ) + *ascent = h - d; + if ( descent ) + *descent = d; + if ( internalLeading ) + *internalLeading = 0; } //----------------------------------------------------------------------------- @@ -1113,6 +1161,15 @@ void wxDCImpl::DoGradientFillConcentric(const wxRect& rect, IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject) +void wxDC::CopyAttributes(const wxDC& dc) +{ + SetFont(dc.GetFont()); + SetTextForeground(dc.GetTextForeground()); + SetTextBackground(dc.GetTextBackground()); + SetBackground(dc.GetBackground()); + SetLayoutDirection(dc.GetLayoutDirection()); +} + void wxDC::DrawLabel(const wxString& text, const wxBitmap& bitmap, const wxRect& rect, @@ -1125,7 +1182,7 @@ void wxDC::DrawLabel(const wxString& text, GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine); wxCoord width, height; - if ( bitmap.Ok() ) + if ( bitmap.IsOk() ) { width = widthText + bitmap.GetWidth(); height = bitmap.GetHeight(); @@ -1167,7 +1224,7 @@ void wxDC::DrawLabel(const wxString& text, wxCoord x0 = x, y0 = y, width0 = width; - if ( bitmap.Ok() ) + if ( bitmap.IsOk() ) { DrawBitmap(bitmap, x, y, true /* use mask */); @@ -1184,6 +1241,12 @@ void wxDC::DrawLabel(const wxString& text, yUnderscore = 0; // split the string into lines and draw each of them separately + // + // NB: while wxDC::DrawText() on some platforms supports drawing multi-line + // strings natively, this is not the case for all of them, notably not + // wxMSW which uses this function for multi-line texts, so we may only + // call DrawText() for single-line strings from here to avoid infinite + // recursion. wxString curLine; for ( wxString::const_iterator pc = text.begin(); ; ++pc ) { @@ -1254,7 +1317,14 @@ void wxDC::DrawLabel(const wxString& text, // it should be of the same colour as text SetPen(wxPen(GetTextForeground(), 0, wxPENSTYLE_SOLID)); - yUnderscore--; + // This adjustment is relatively arbitrary: we need to draw the + // underline slightly higher to avoid overflowing the character cell + // but whether we should do it 1, 2 or 3 pixels higher is not clear. + // + // The currently used value seems to be compatible with native MSW + // behaviour, i.e. it results in the same appearance of the owner-drawn + // and normal labels. + yUnderscore -= 2; DrawLine(startUnderscore, yUnderscore, endUnderscore, yUnderscore); } @@ -1321,6 +1391,13 @@ void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const if (h) *h = hh; } +void wxDC::DrawObject(wxDrawObject* drawobject) +{ + drawobject->Draw(*this); + CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); + CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); +} + #endif // WXWIN_COMPATIBILITY_2_8 /* @@ -1525,7 +1602,7 @@ void wxDCImpl::CalculateEllipticPoints( wxPointList* points, y2 = y2-y-y+1; --y; } - // old y now to big: set point with old y, old x + // old y now too big: set point with old y, old x if( bNewPoint && x>1) { int x1 = x - 1; @@ -1637,3 +1714,15 @@ void wxDCImpl::CalculateEllipticPoints( wxPointList* points, } // 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; +}