///////////////////////////////////////////////////////////////////////////// // Name: dc.cpp // Purpose: wxDC class // Author: Julian Smart // Modified by: // Created: 01/02/97 // RCS-ID: $Id$ // Copyright: (c) Julian Smart and Markus Holzem // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // =========================================================================== // declarations // =========================================================================== // --------------------------------------------------------------------------- // headers // --------------------------------------------------------------------------- #ifdef __GNUG__ #pragma implementation "dc.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/window.h" #include "wx/dc.h" #include "wx/utils.h" #include "wx/dialog.h" #include "wx/app.h" #include "wx/bitmap.h" #include "wx/dcmemory.h" #include "wx/log.h" #include "wx/icon.h" #endif #include "wx/dcprint.h" #include #include #include "wx/msw/private.h" // needs to be before #include #if wxUSE_COMMON_DIALOGS #if wxUSE_NORLANDER_HEADERS #include #endif #include #endif #ifndef __WIN32__ #include #endif IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject) // --------------------------------------------------------------------------- // constants // --------------------------------------------------------------------------- static const int VIEWPORT_EXTENT = 1000; static const int MM_POINTS = 9; static const int MM_METRIC = 10; // usually this is defined in math.h #ifndef M_PI static const double M_PI = 3.14159265358979323846; #endif // M_PI // ROPs which don't have standard names (see "Ternary Raster Operations" in the // MSDN docs for how this and other numbers in wxDC::Blit() are obtained) #define DSTCOPY 0x00AA0029 // a.k.a. NOP operation // --------------------------------------------------------------------------- // private functions // --------------------------------------------------------------------------- // convert degrees to radians static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } // =========================================================================== // implementation // =========================================================================== // --------------------------------------------------------------------------- // wxDC // --------------------------------------------------------------------------- // Default constructor wxDC::wxDC() { m_canvas = NULL; m_oldBitmap = 0; m_oldPen = 0; m_oldBrush = 0; m_oldFont = 0; m_oldPalette = 0; m_bOwnsDC = FALSE; m_hDC = 0; m_windowExtX = VIEWPORT_EXTENT; m_windowExtY = VIEWPORT_EXTENT; m_hDCCount = 0; } wxDC::~wxDC() { if ( m_hDC != 0 ) { SelectOldObjects(m_hDC); if ( m_bOwnsDC ) { if ( m_canvas == NULL ) ::DeleteDC(GetHdc()); else ::ReleaseDC((HWND)m_canvas->GetHWND(), GetHdc()); } } } // This will select current objects out of the DC, // which is what you have to do before deleting the // DC. void wxDC::SelectOldObjects(WXHDC dc) { if (dc) { if (m_oldBitmap) { ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap); if (m_selectedBitmap.Ok()) { m_selectedBitmap.SetSelectedInto(NULL); } } m_oldBitmap = 0; if (m_oldPen) { ::SelectObject((HDC) dc, (HPEN) m_oldPen); } m_oldPen = 0; if (m_oldBrush) { ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush); } m_oldBrush = 0; if (m_oldFont) { ::SelectObject((HDC) dc, (HFONT) m_oldFont); } m_oldFont = 0; if (m_oldPalette) { ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE); } m_oldPalette = 0; } m_brush = wxNullBrush; m_pen = wxNullPen; m_palette = wxNullPalette; m_font = wxNullFont; m_backgroundBrush = wxNullBrush; m_selectedBitmap = wxNullBitmap; } // --------------------------------------------------------------------------- // clipping // --------------------------------------------------------------------------- void wxDC::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch) { m_clipping = TRUE; m_clipX1 = (int)cx; m_clipY1 = (int)cy; m_clipX2 = (int)(cx + cw); m_clipY2 = (int)(cy + ch); DoClipping((WXHDC) m_hDC); } void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) { wxCHECK_RET( region.GetHRGN(), wxT("invalid clipping region") ); wxRect box = region.GetBox(); m_clipping = TRUE; m_clipX1 = box.x; m_clipY1 = box.y; m_clipX2 = box.x + box.width; m_clipY2 = box.y + box.height; #ifdef __WIN16__ SelectClipRgn(GetHdc(), (HRGN) region.GetHRGN()); #else ExtSelectClipRgn(GetHdc(), (HRGN) region.GetHRGN(), RGN_AND); #endif } void wxDC::DoClipping(WXHDC dc) { if (m_clipping && dc) { IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1), XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2)); } } void wxDC::DestroyClippingRegion() { if (m_clipping && m_hDC) { // TODO: this should restore the previous clipping region, // so that OnPaint processing works correctly, and the update clipping region // doesn't get destroyed after the first DestroyClippingRegion. HRGN rgn = CreateRectRgn(0, 0, 32000, 32000); SelectClipRgn(GetHdc(), rgn); DeleteObject(rgn); } m_clipping = FALSE; } // --------------------------------------------------------------------------- // query capabilities // --------------------------------------------------------------------------- bool wxDC::CanDrawBitmap() const { return TRUE; } bool wxDC::CanGetTextExtent() const { // What sort of display is it? int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY); return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER); } int wxDC::GetDepth() const { return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL); } // --------------------------------------------------------------------------- // drawing // --------------------------------------------------------------------------- void wxDC::Clear() { RECT rect; if ( m_canvas ) { GetClientRect((HWND) m_canvas->GetHWND(), &rect); } else { // No, I think we should simply ignore this if printing on e.g. // a printer DC. // wxCHECK_RET( m_selectedBitmap.Ok(), wxT("this DC can't be cleared") ); if (!m_selectedBitmap.Ok()) return; rect.left = 0; rect.top = 0; rect.right = m_selectedBitmap.GetWidth(); rect.bottom = m_selectedBitmap.GetHeight(); } (void) ::SetMapMode(GetHdc(), MM_TEXT); DWORD colour = GetBkColor(GetHdc()); HBRUSH brush = CreateSolidBrush(colour); FillRect(GetHdc(), &rect, brush); DeleteObject(brush); ::SetMapMode(GetHdc(), MM_ANISOTROPIC); ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); } void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) { if ( !::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), col.GetPixel(), style == wxFLOOD_SURFACE ? FLOODFILLSURFACE : FLOODFILLBORDER) ) { // quoting from the MSDN docs: // // Following are some of the reasons this function might fail: // // * The filling could not be completed. // * The specified point has the boundary color specified by the // crColor parameter (if FLOODFILLBORDER was requested). // * The specified point does not have the color specified by // crColor (if FLOODFILLSURFACE was requested) // * The point is outside the clipping region that is, it is not // visible on the device. // wxLogLastError("ExtFloodFill"); } CalcBoundingBox(x, y); } bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const { // get the color of the pixel COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)); // get the color of the pen COLORREF pencolor = 0x00ffffff; if (m_pen.Ok()) { pencolor = m_pen.GetColour().GetPixel(); } // return the color of the pixel if( col ) { col->Set(GetRValue(pixelcolor), GetGValue(pixelcolor), GetBValue(pixelcolor)); } // check, if color of the pixels is the same as the color of the current // pen and return TRUE if it is, FALSE otherwise return pixelcolor == pencolor; } void wxDC::DoCrossHair(wxCoord x, wxCoord y) { wxCoord x1 = x-VIEWPORT_EXTENT; wxCoord y1 = y-VIEWPORT_EXTENT; wxCoord x2 = x+VIEWPORT_EXTENT; wxCoord y2 = y+VIEWPORT_EXTENT; (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), NULL); (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y)); (void)MoveToEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), NULL); (void)LineTo(GetHdc(), XLOG2DEV(x), YLOG2DEV(y2)); CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); } void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) { (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL); (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2)); /* MATTHEW: [6] New normalization */ #if WX_STANDARD_GRAPHICS (void)LineTo(GetHdc(), XLOG2DEV(x2) + 1, YLOG2DEV(y2)); #endif CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); } void wxDC::DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2, wxCoord xc, wxCoord yc) { double dx = xc-x1; double dy = yc-y1; double radius = (double)sqrt(dx*dx+dy*dy) ;; if (x1==x2 && x2==y2) { DrawEllipse(xc,yc,(wxCoord)(radius*2.0),(wxCoord)(radius*2.0)); return; } wxCoord xx1 = XLOG2DEV(x1); wxCoord yy1 = YLOG2DEV(y1); wxCoord xx2 = XLOG2DEV(x2); wxCoord yy2 = YLOG2DEV(y2); wxCoord xxc = XLOG2DEV(xc); wxCoord yyc = YLOG2DEV(yc); wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1))); (void)MoveToEx(GetHdc(), (int) xx1, (int) yy1, NULL); wxCoord xxx1 = (wxCoord) (xxc-ray); wxCoord yyy1 = (wxCoord) (yyc-ray); wxCoord xxx2 = (wxCoord) (xxc+ray); wxCoord yyy2 = (wxCoord) (yyc+ray); if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT) { // Have to add 1 to bottom-right corner of rectangle // to make semi-circles look right (crooked line otherwise). // Unfortunately this is not a reliable method, depends // on the size of shape. // TODO: figure out why this happens! Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2); } else Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2); CalcBoundingBox((wxCoord)(xc-radius), (wxCoord)(yc-radius)); CalcBoundingBox((wxCoord)(xc+radius), (wxCoord)(yc+radius)); } void wxDC::DoDrawPoint(wxCoord x, wxCoord y) { COLORREF color = 0x00ffffff; if (m_pen.Ok()) { color = m_pen.GetColour().GetPixel(); } SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color); CalcBoundingBox(x, y); } void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle) { COLORREF old_textground = ::GetTextColor(GetHdc()); COLORREF old_background = ::GetBkColor(GetHdc()); if (m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) { if (m_textForegroundColour.Ok()) { //just the oposite from what is expected see help on pattern brush // 1 in mask becomes bk color ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel() ); } if (m_textBackgroundColour.Ok()) { //just the oposite from what is expected // 0 in mask becomes text color ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel() ); } if (m_backgroundMode == wxTRANSPARENT) SetBkMode(GetHdc(), TRANSPARENT); else SetBkMode(GetHdc(), OPAQUE); } // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) { POINT *cpoints = new POINT[n]; int i; for (i = 0; i < n; i++) { cpoints[i].x = (int)(points[i].x + xoffset); cpoints[i].y = (int)(points[i].y + yoffset); CalcBoundingBox(cpoints[i].x, cpoints[i].y); } int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); (void)Polygon(GetHdc(), cpoints, n); SetPolyFillMode(GetHdc(),prev); delete[] cpoints; } else { int i; for (i = 0; i < n; i++) CalcBoundingBox(points[i].x, points[i].y); int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); (void)Polygon(GetHdc(), (POINT*) points, n); SetPolyFillMode(GetHdc(),prev); } if (m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE) { ::SetBkMode(GetHdc(), TRANSPARENT); ::SetTextColor(GetHdc(), old_textground); ::SetBkColor(GetHdc(), old_background); } } void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) { // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) { POINT *cpoints = new POINT[n]; int i; for (i = 0; i < n; i++) { cpoints[i].x = (int)(points[i].x + xoffset); cpoints[i].y = (int)(points[i].y + yoffset); CalcBoundingBox(cpoints[i].x, cpoints[i].y); } (void)Polyline(GetHdc(), cpoints, n); delete[] cpoints; } else { int i; for (i = 0; i < n; i++) CalcBoundingBox(points[i].x, points[i].y); (void)Polyline(GetHdc(), (POINT*) points, n); } } void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { COLORREF colFgOld = 0, colBgOld = 0; if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE ) { colFgOld = ::GetTextColor(GetHdc()); colBgOld = ::GetBkColor(GetHdc()); if ( m_textForegroundColour.Ok() ) { // just the oposite from what is expected see help on pattern brush // 1 in mask becomes bk color ::SetBkColor(GetHdc(), m_textForegroundColour.GetPixel()); } if ( m_textBackgroundColour.Ok() ) { // 0 in mask becomes text color ::SetTextColor(GetHdc(), m_textBackgroundColour.GetPixel()); } // VZ: IMHO this does strictly nothing here SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT : OPAQUE); } wxCoord x2 = x + width; wxCoord y2 = y + height; // Windows draws the filled rectangles without outline (i.e. drawn with a // transparent pen) one pixel smaller in both directions and we want them // to have the same size regardless of which pen is used - adjust if ( m_pen.GetStyle() == wxTRANSPARENT ) { // x2++; // y2++; } (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); if ( m_brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE ) { // restore the colours we changed ::SetBkMode(GetHdc(), TRANSPARENT); ::SetTextColor(GetHdc(), colFgOld); ::SetBkColor(GetHdc(), colBgOld); } } void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) { // Now, a negative radius value is interpreted to mean // 'the proportion of the smallest X or Y dimension' if (radius < 0.0) { double smallest = 0.0; if (width < height) smallest = width; else smallest = height; radius = (- radius * smallest); } wxCoord x2 = (x+width); wxCoord y2 = (y+height); (void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius))); CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); } void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { wxCoord x2 = (x+width); wxCoord y2 = (y+height); (void)Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); } // Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) { wxCoord x2 = (x+w); wxCoord y2 = (y+h); int rx1 = XLOG2DEV(x+w/2); int ry1 = YLOG2DEV(y+h/2); int rx2 = rx1; int ry2 = ry1; sa = DegToRad(sa); ea = DegToRad(ea); rx1 += (int)(100.0 * abs(w) * cos(sa)); ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa)); rx2 += (int)(100.0 * abs(w) * cos(ea)); ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea)); // draw pie with NULL_PEN first and then outline otherwise a line is // drawn from the start and end points to the centre HPEN orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN)); if (m_signY > 0) { (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1, rx1, ry1, rx2, ry2); } else { (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2), rx1, ry1-1, rx2, ry2-1); } ::SelectObject(GetHdc(), orig_pen); (void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2), rx1, ry1, rx2, ry2); CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); } void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) { wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") ); ::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon)); CalcBoundingBox(x, y); CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight()); } void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ) { wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") ); int width = bmp.GetWidth(), height = bmp.GetHeight(); HBITMAP hbmpMask = 0; if ( useMask ) { wxMask *mask = bmp.GetMask(); if ( mask ) hbmpMask = (HBITMAP)mask->GetMaskBitmap(); if ( !hbmpMask ) { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter useMask = FALSE; } } if ( useMask ) { #ifdef __WIN32__ HDC hdcMem = ::CreateCompatibleDC(GetHdc()); ::SelectObject(hdcMem, GetHbitmapOf(bmp)); // use MaskBlt() with ROP which doesn't do anything to dst in the mask // points bool ok = ::MaskBlt(GetHdc(), x, y, width, height, hdcMem, 0, 0, hbmpMask, 0, 0, MAKEROP4(SRCCOPY, DSTCOPY)) != 0; ::DeleteDC(hdcMem); if ( !ok ) #endif // Win32 { // Rather than reproduce wxDC::Blit, let's do it at the wxWin API // level wxMemoryDC memDC; memDC.SelectObject(bmp); Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask); memDC.SelectObject(wxNullBitmap); } } else // no mask, just use BitBlt() { HDC cdc = GetHdc(); HDC memdc = ::CreateCompatibleDC( cdc ); HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( ); wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") ); COLORREF old_textground = ::GetTextColor(GetHdc()); COLORREF old_background = ::GetBkColor(GetHdc()); if (m_textForegroundColour.Ok()) { ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() ); } if (m_textBackgroundColour.Ok()) { ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); } ::SelectObject( memdc, hbitmap ); ::BitBlt( cdc, x, y, width, height, memdc, 0, 0, SRCCOPY); ::DeleteDC( memdc ); ::SetTextColor(GetHdc(), old_textground); ::SetBkColor(GetHdc(), old_background); } } void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) { DrawAnyText(text, x, y); // update the bounding box CalcBoundingBox(x, y); wxCoord w, h; GetTextExtent(text, &w, &h); CalcBoundingBox(x + w, y + h); } void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) { // prepare for drawing the text if ( m_textForegroundColour.Ok() ) SetTextColor(GetHdc(), m_textForegroundColour.GetPixel()); DWORD old_background = 0; if ( m_textBackgroundColour.Ok() ) { old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); } SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT : OPAQUE); if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), text.c_str(), text.length()) == 0 ) { wxLogLastError("TextOut"); } // restore the old parameters (text foreground colour may be left because // it never is set to anything else, but background should remain // transparent even if we just drew an opaque string) if ( m_textBackgroundColour.Ok() ) (void)SetBkColor(GetHdc(), old_background); SetBkMode(GetHdc(), TRANSPARENT); } void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) { // we test that we have some font because otherwise we should still use the // "else" part below to avoid that DrawRotatedText(angle = 180) and // DrawRotatedText(angle = 0) use different fonts (we can't use the default // font for drawing rotated fonts unfortunately) if ( (angle == 0.0) && m_font.Ok() ) { DoDrawText(text, x, y); } else { // NB: don't take DEFAULT_GUI_FONT because it's not TrueType and so // can't have non zero orientation/escapement wxFont font = m_font.Ok() ? m_font : *wxNORMAL_FONT; HFONT hfont = (HFONT)font.GetResourceHandle(); LOGFONT lf; if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 ) { wxLogLastError("GetObject(hfont)"); } // GDI wants the angle in tenth of degree long angle10 = (long)(angle * 10); lf.lfEscapement = angle10; lf. lfOrientation = angle10; hfont = ::CreateFontIndirect(&lf); if ( !hfont ) { wxLogLastError("CreateFont"); } else { HFONT hfontOld = (HFONT)::SelectObject(GetHdc(), hfont); DrawAnyText(text, x, y); (void)::SelectObject(GetHdc(), hfontOld); (void)::DeleteObject(hfont); } // call the bounding box by adding all four vertices of the rectangle // containing the text to it (simpler and probably not slower than // determining which of them is really topmost/leftmost/...) wxCoord w, h; GetTextExtent(text, &w, &h); double rad = DegToRad(angle); // "upper left" and "upper right" CalcBoundingBox(x, y); CalcBoundingBox(x + w*cos(rad), y - h*sin(rad)); // "bottom left" and "bottom right" x += (wxCoord)(h*sin(rad)); y += (wxCoord)(h*cos(rad)); CalcBoundingBox(x, y); CalcBoundingBox(x + h*sin(rad), y + h*cos(rad)); } } // --------------------------------------------------------------------------- // set GDI objects // --------------------------------------------------------------------------- void wxDC::SetPalette(const wxPalette& palette) { // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldPalette) { ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); m_oldPalette = 0; } m_palette = palette; if (!m_palette.Ok()) { // Setting a NULL colourmap is a way of restoring // the original colourmap if (m_oldPalette) { ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); m_oldPalette = 0; } return; } if (m_palette.Ok() && m_palette.GetHPALETTE()) { HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), TRUE); if (!m_oldPalette) m_oldPalette = (WXHPALETTE) oldPal; ::RealizePalette(GetHdc()); } } void wxDC::SetFont(const wxFont& the_font) { // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldFont) { ::SelectObject(GetHdc(), (HFONT) m_oldFont); m_oldFont = 0; } m_font = the_font; if (!the_font.Ok()) { if (m_oldFont) ::SelectObject(GetHdc(), (HFONT) m_oldFont); m_oldFont = 0; } if (m_font.Ok() && m_font.GetResourceHandle()) { HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle()); if (f == (HFONT) NULL) { wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont.")); } if (!m_oldFont) m_oldFont = (WXHFONT) f; } } void wxDC::SetPen(const wxPen& pen) { // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldPen) { ::SelectObject(GetHdc(), (HPEN) m_oldPen); m_oldPen = 0; } m_pen = pen; if (!m_pen.Ok()) { if (m_oldPen) ::SelectObject(GetHdc(), (HPEN) m_oldPen); m_oldPen = 0; } if (m_pen.Ok()) { if (m_pen.GetResourceHandle()) { HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle()); if (!m_oldPen) m_oldPen = (WXHPEN) p; } } } void wxDC::SetBrush(const wxBrush& brush) { // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldBrush) { ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); m_oldBrush = 0; } m_brush = brush; if (!m_brush.Ok()) { if (m_oldBrush) ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); m_oldBrush = 0; } if (m_brush.Ok()) { if (m_brush.GetResourceHandle()) { HBRUSH b = 0; b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle()); if (!m_oldBrush) m_oldBrush = (WXHBRUSH) b; } } } void wxDC::SetBackground(const wxBrush& brush) { m_backgroundBrush = brush; if (!m_backgroundBrush.Ok()) return; if (m_canvas) { bool customColours = TRUE; // If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to // change background colours from the control-panel specified colours. if (m_canvas->IsKindOf(CLASSINFO(wxWindow)) && ((m_canvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS)) customColours = FALSE; if (customColours) { if (m_backgroundBrush.GetStyle()==wxTRANSPARENT) { m_canvas->SetTransparent(TRUE); } else { // New behaviour, 10/2/99: setting the background brush of a DC // doesn't affect the window background colour. However, // I'm leaving in the transparency setting because it's needed by // various controls (e.g. wxStaticText) to determine whether to draw // transparently or not. TODO: maybe this should be a new function // wxWindow::SetTransparency(). Should that apply to the child itself, or the // parent? // m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour()); m_canvas->SetTransparent(FALSE); } } } COLORREF new_color = m_backgroundBrush.GetColour().GetPixel(); { (void)SetBkColor(GetHdc(), new_color); } } void wxDC::SetBackgroundMode(int mode) { m_backgroundMode = mode; // SetBackgroundColour now only refers to text background // and m_backgroundMode is used there /* if (m_backgroundMode == wxTRANSPARENT) ::SetBkMode(GetHdc(), TRANSPARENT); else ::SetBkMode(GetHdc(), OPAQUE); */ } void wxDC::SetLogicalFunction(int function) { m_logicalFunction = function; SetRop(m_hDC); } void wxDC::SetRop(WXHDC dc) { if ( !dc || m_logicalFunction < 0 ) return; int rop; switch (m_logicalFunction) { case wxCLEAR: rop = R2_BLACK; break; case wxXOR: rop = R2_XORPEN; break; case wxINVERT: rop = R2_NOT; break; case wxOR_REVERSE: rop = R2_MERGEPENNOT; break; case wxAND_REVERSE: rop = R2_MASKPENNOT; break; case wxCOPY: rop = R2_COPYPEN; break; case wxAND: rop = R2_MASKPEN; break; case wxAND_INVERT: rop = R2_MASKNOTPEN; break; case wxNO_OP: rop = R2_NOP; break; case wxNOR: rop = R2_NOTMERGEPEN; break; case wxEQUIV: rop = R2_NOTXORPEN; break; case wxSRC_INVERT: rop = R2_NOTCOPYPEN; break; case wxOR_INVERT: rop = R2_MERGENOTPEN; break; case wxNAND: rop = R2_NOTMASKPEN; break; case wxOR: rop = R2_MERGEPEN; break; case wxSET: rop = R2_WHITE; break; default: wxFAIL_MSG( wxT("unsupported logical function") ); return; } SetROP2(GetHdc(), rop); } bool wxDC::StartDoc(const wxString& message) { // We might be previewing, so return TRUE to let it continue. return TRUE; } void wxDC::EndDoc() { } void wxDC::StartPage() { } void wxDC::EndPage() { } // --------------------------------------------------------------------------- // text metrics // --------------------------------------------------------------------------- wxCoord wxDC::GetCharHeight() const { TEXTMETRIC lpTextMetric; GetTextMetrics(GetHdc(), &lpTextMetric); return YDEV2LOGREL(lpTextMetric.tmHeight); } wxCoord wxDC::GetCharWidth() const { TEXTMETRIC lpTextMetric; GetTextMetrics(GetHdc(), &lpTextMetric); return XDEV2LOGREL(lpTextMetric.tmAveCharWidth); } void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, wxCoord *descent, wxCoord *externalLeading, wxFont *theFont) const { wxFont *fontToUse = (wxFont*) theFont; if (!fontToUse) fontToUse = (wxFont*) &m_font; SIZE sizeRect; TEXTMETRIC tm; GetTextExtentPoint(GetHdc(), WXSTRINGCAST string, wxStrlen(WXSTRINGCAST string), &sizeRect); GetTextMetrics(GetHdc(), &tm); if (x) *x = XDEV2LOGREL(sizeRect.cx); if (y) *y = YDEV2LOGREL(sizeRect.cy); if (descent) *descent = tm.tmDescent; if (externalLeading) *externalLeading = tm.tmExternalLeading; } void wxDC::SetMapMode(int mode) { m_mappingMode = mode; int pixel_width = 0; int pixel_height = 0; int mm_width = 0; int mm_height = 0; pixel_width = GetDeviceCaps(GetHdc(), HORZRES); pixel_height = GetDeviceCaps(GetHdc(), VERTRES); mm_width = GetDeviceCaps(GetHdc(), HORZSIZE); mm_height = GetDeviceCaps(GetHdc(), VERTSIZE); if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0)) { return; } double mm2pixelsX = pixel_width/mm_width; double mm2pixelsY = pixel_height/mm_height; switch (mode) { case wxMM_TWIPS: { m_logicalScaleX = (twips2mm * mm2pixelsX); m_logicalScaleY = (twips2mm * mm2pixelsY); break; } case wxMM_POINTS: { m_logicalScaleX = (pt2mm * mm2pixelsX); m_logicalScaleY = (pt2mm * mm2pixelsY); break; } case wxMM_METRIC: { m_logicalScaleX = mm2pixelsX; m_logicalScaleY = mm2pixelsY; break; } case wxMM_LOMETRIC: { m_logicalScaleX = (mm2pixelsX/10.0); m_logicalScaleY = (mm2pixelsY/10.0); break; } default: case wxMM_TEXT: { m_logicalScaleX = 1.0; m_logicalScaleY = 1.0; break; } } if (::GetMapMode(GetHdc()) != MM_ANISOTROPIC) ::SetMapMode(GetHdc(), MM_ANISOTROPIC); SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); m_windowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT); m_windowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT); ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); } void wxDC::SetUserScale(double x, double y) { m_userScaleX = x; m_userScaleY = y; SetMapMode(m_mappingMode); } void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) { m_signX = xLeftRight ? 1 : -1; m_signY = yBottomUp ? -1 : 1; SetMapMode(m_mappingMode); } void wxDC::SetSystemScale(double x, double y) { m_scaleX = x; m_scaleY = y; SetMapMode(m_mappingMode); } void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) { m_logicalOriginX = x; m_logicalOriginY = y; ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); } void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) { m_deviceOriginX = x; m_deviceOriginY = y; ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); } // --------------------------------------------------------------------------- // coordinates transformations // --------------------------------------------------------------------------- wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const { return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX); } wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const { return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX)); } wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const { return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY); } wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const { return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY)); } wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const { return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX); } wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const { return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX); } wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const { return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY); } wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const { return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY); } // --------------------------------------------------------------------------- // bit blit // --------------------------------------------------------------------------- bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop, bool useMask) { wxMask *mask = NULL; if ( useMask ) { const wxBitmap& bmp = source->m_selectedBitmap; mask = bmp.GetMask(); if ( !(bmp.Ok() && mask && mask->GetMaskBitmap()) ) { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter useMask = FALSE; } } COLORREF old_textground = ::GetTextColor(GetHdc()); COLORREF old_background = ::GetBkColor(GetHdc()); if (m_textForegroundColour.Ok()) { ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() ); } if (m_textBackgroundColour.Ok()) { ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); } DWORD dwRop = SRCCOPY; switch (rop) { case wxXOR: dwRop = SRCINVERT; break; case wxINVERT: dwRop = DSTINVERT; break; case wxOR_REVERSE: dwRop = 0x00DD0228; break; case wxAND_REVERSE: dwRop = SRCERASE; break; case wxCLEAR: dwRop = BLACKNESS; break; case wxSET: dwRop = WHITENESS; break; case wxOR_INVERT: dwRop = MERGEPAINT; break; case wxAND: dwRop = SRCAND; break; case wxOR: dwRop = SRCPAINT; break; case wxEQUIV: dwRop = 0x00990066; break; case wxNAND: dwRop = 0x007700E6; break; case wxAND_INVERT: dwRop = 0x00220326; break; case wxCOPY: dwRop = SRCCOPY; break; case wxNO_OP: dwRop = DSTCOPY; break; case wxSRC_INVERT: dwRop = NOTSRCCOPY; break; case wxNOR: dwRop = NOTSRCCOPY; break; default: wxFAIL_MSG( wxT("unsupported logical function") ); return FALSE; } bool success; if (useMask) { #ifdef __WIN32__ // we want the part of the image corresponding to the mask to be // transparent, so use "DSTCOPY" ROP for the mask points (the usual // meaning of fg and bg is inverted which corresponds to wxWin notion // of the mask which is also contrary to the Windows one) success = ::MaskBlt(GetHdc(), xdest, ydest, width, height, GetHdcOf(*source), xsrc, ysrc, (HBITMAP)mask->GetMaskBitmap(), 0, 0, MAKEROP4(dwRop, DSTCOPY)) != 0; if ( !success ) #endif // Win32 { // Blit bitmap with mask // create a temp buffer bitmap and DCs to access it and the mask HDC dc_mask = ::CreateCompatibleDC(GetHdcOf(*source)); HDC dc_buffer = ::CreateCompatibleDC(GetHdc()); HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height); ::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap()); ::SelectObject(dc_buffer, buffer_bmap); // copy dest to buffer if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, GetHdc(), xdest, ydest, SRCCOPY) ) { wxLogLastError("BitBlt"); } // copy src to buffer using selected raster op if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, GetHdcOf(*source), xsrc, ysrc, dwRop) ) { wxLogLastError("BitBlt"); } // set masked area in buffer to BLACK (pixel value 0) COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255)); COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0)); if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, dc_mask, xsrc, ysrc, SRCAND) ) { wxLogLastError("BitBlt"); } // set unmasked area in dest to BLACK ::SetBkColor(GetHdc(), RGB(0, 0, 0)); ::SetTextColor(GetHdc(), RGB(255, 255, 255)); if ( !::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height, dc_mask, xsrc, ysrc, SRCAND) ) { wxLogLastError("BitBlt"); } ::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values ::SetTextColor(GetHdc(), prevCol); // OR buffer to dest success = ::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height, dc_buffer, 0, 0, SRCPAINT) != 0; if ( !success ) { wxLogLastError("BitBlt"); } // tidy up temporary DCs and bitmap ::SelectObject(dc_mask, 0); ::DeleteDC(dc_mask); ::SelectObject(dc_buffer, 0); ::DeleteDC(dc_buffer); ::DeleteObject(buffer_bmap); } } else // no mask, just BitBlt() it { success = ::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height, GetHdcOf(*source), xsrc, ysrc, dwRop) != 0; if ( !success ) { wxLogLastError("BitBlt"); } } ::SetTextColor(GetHdc(), old_textground); ::SetBkColor(GetHdc(), old_background); return success; } void wxDC::DoGetSize(int *w, int *h) const { if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES); if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES); } void wxDC::DoGetSizeMM(int *w, int *h) const { if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE); if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE); } wxSize wxDC::GetPPI() const { int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); return wxSize(x, y); } // For use by wxWindows only, unless custom units are required. void wxDC::SetLogicalScale(double x, double y) { m_logicalScaleX = x; m_logicalScaleY = y; } #if WXWIN_COMPATIBILITY void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y, float *descent, float *externalLeading, wxFont *theFont, bool use16bit) const { wxCoord x1, y1, descent1, externalLeading1; GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit); *x = x1; *y = y1; if (descent) *descent = descent1; if (externalLeading) *externalLeading = externalLeading1; } #endif // --------------------------------------------------------------------------- // spline drawing code // --------------------------------------------------------------------------- #if wxUSE_SPLINES class wxSpline: public wxObject { public: int type; wxList *points; wxSpline(wxList *list); void DeletePoints(); // Doesn't delete points ~wxSpline(); }; void wx_draw_open_spline(wxDC *dc, wxSpline *spline); 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(wxDC *dc); wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3); void wxDC::DoDrawSpline(wxList *list) { wxSpline spline(list); wx_draw_open_spline(this, &spline); } wxList wx_spline_point_list; void wx_draw_open_spline(wxDC *dc, wxSpline *spline) { wxPoint *p; double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; double x1, y1, x2, y2; wxNode *node = spline->points->First(); p = (wxPoint *)node->Data(); x1 = p->x; y1 = p->y; node = node->Next(); p = (wxPoint *)node->Data(); 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->Next()) != NULL) { p = (wxPoint *)node->Data(); 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((double)wx_round(cx1), (double)wx_round(cy1)); wx_spline_add_point(x2, y2); wx_spline_draw_point_array(dc); } /********************* CURVES FOR SPLINES ***************************** The following spline drawing routine is from "An Algorithm for High-Speed Curve Generation" by George Merrill Chaikin, Computer Graphics and Image Processing, 3, Academic Press, 1974, 346-349. and "On Chaikin's Algorithm" by R. F. Riesenfeld, Computer Graphics and Image Processing, 4, Academic Press, 1975, 304-310. ***********************************************************************/ #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((double)wx_round(x1), (double)wx_round(y1)); wx_spline_add_point((double)wx_round(xmid), (double)wx_round(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; point->x = (int) x; point->y = (int) y; wx_spline_point_list.Append((wxObject*)point); return TRUE; } static void wx_spline_draw_point_array(wxDC *dc) { dc->DrawLines(&wx_spline_point_list, 0, 0); wxNode *node = wx_spline_point_list.First(); while (node) { wxPoint *point = (wxPoint *)node->Data(); delete point; delete node; node = wx_spline_point_list.First(); } } wxSpline::wxSpline(wxList *list) { points = list; } wxSpline::~wxSpline() { } void wxSpline::DeletePoints() { for(wxNode *node = points->First(); node; node = points->First()) { wxPoint *point = (wxPoint *)node->Data(); delete point; delete node; } delete points; } #endif // wxUSE_SPLINES