X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b5371ab8cdc1dbace91ad022ec616bcd053b3c20..77c8787c164beb31e6a0eafbd3215bc377af6946:/src/msw/dc.cpp?ds=sidebyside diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp index 91de2abe8e..dd4750f6a0 100644 --- a/src/msw/dc.cpp +++ b/src/msw/dc.cpp @@ -1,6 +1,6 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: dc.cpp -// Purpose: wxDC class +// Name: src/msw/dc.cpp +// Purpose: wxDC class for MSW port // Author: Julian Smart // Modified by: // Created: 01/02/97 @@ -17,10 +17,6 @@ // headers // --------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "dc.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -29,6 +25,8 @@ #endif #ifndef WX_PRECOMP + #include "wx/msw/wrapcdlg.h" + #include "wx/image.h" #include "wx/window.h" #include "wx/dc.h" #include "wx/utils.h" @@ -38,32 +36,29 @@ #include "wx/dcmemory.h" #include "wx/log.h" #include "wx/icon.h" + #include "wx/dcprint.h" + #include "wx/module.h" #endif -#include "wx/msw/private.h" // needs to be before #include - #include "wx/sysopt.h" -#include "wx/dcprint.h" -#include "wx/module.h" -#include "wx/dynload.h" +#include "wx/dynlib.h" #ifdef wxHAVE_RAW_BITMAP #include "wx/rawbmp.h" #endif #include -#include - -#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__) - #include -#endif #ifndef __WIN32__ #include #endif #ifndef AC_SRC_ALPHA -#define AC_SRC_ALPHA 1 + #define AC_SRC_ALPHA 1 +#endif + +#ifndef LAYOUT_RTL + #define LAYOUT_RTL 1 #endif /* Quaternary raster codes */ @@ -92,11 +87,6 @@ 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 @@ -112,13 +102,17 @@ static const int MM_METRIC = 10; coordinates used. */ -// logical to device -#define XLOG2DEV(x) (x) -#define YLOG2DEV(y) (y) - -// device to logical -#define XDEV2LOG(x) (x) -#define YDEV2LOG(y) (y) +#ifdef __WXWINCE__ + #define XLOG2DEV(x) ((x-m_logicalOriginX)*m_signX) + #define YLOG2DEV(y) ((y-m_logicalOriginY)*m_signY) + #define XDEV2LOG(x) ((x)*m_signX+m_logicalOriginX) + #define YDEV2LOG(y) ((y)*m_signY+m_logicalOriginY) +#else + #define XLOG2DEV(x) (x) + #define YLOG2DEV(y) (y) + #define XDEV2LOG(x) (x) + #define YDEV2LOG(y) (y) +#endif // --------------------------------------------------------------------------- // private functions @@ -137,14 +131,17 @@ static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } // otherwise static bool AlphaBlt(HDC hdcDst, int x, int y, int w, int h, - HDC hdcSrc, + int srcX, int srcY, HDC hdcSrc, const wxBitmap& bmpSrc); #ifdef wxHAVE_RAW_BITMAP -// our (limited) AlphaBlend() replacement + +// our (limited) AlphaBlend() replacement for Windows versions not providing it static void -wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, const wxBitmap& bmp); -#endif +wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, + int srcX, int srcY, const wxBitmap& bmp); + +#endif // wxHAVE_RAW_BITMAP // ---------------------------------------------------------------------------- // private classes @@ -176,7 +173,8 @@ private: class StretchBltModeChanger { public: - StretchBltModeChanger(HDC hdc, int mode) + StretchBltModeChanger(HDC hdc, + int WXUNUSED_IN_WINCE(mode)) : m_hdc(hdc) { #ifndef __WXWINCE__ @@ -202,6 +200,45 @@ private: DECLARE_NO_COPY_CLASS(StretchBltModeChanger) }; +// helper class to cache dynamically loaded libraries and not attempt reloading +// them if it fails +class wxOnceOnlyDLLLoader +{ +public: + // ctor argument must be a literal string as we don't make a copy of it! + wxOnceOnlyDLLLoader(const wxChar *dllName) + : m_dllName(dllName) + { + }; + + + // return the symbol with the given name or NULL if the DLL not loaded + // or symbol not present + void *GetSymbol(const wxChar *name) + { + // we're prepared to handle errors here + wxLogNull noLog; + + if ( m_dllName ) + { + m_dll.Load(m_dllName); + + // reset the name whether we succeeded or failed so that we don't + // try again the next time + m_dllName = NULL; + } + + return m_dll.IsLoaded() ? m_dll.GetSymbol(name) : NULL; + } + +private: + wxDynamicLibrary m_dll; + const wxChar *m_dllName; +}; + +static wxOnceOnlyDLLLoader wxGDI32DLL(_T("gdi32")); +static wxOnceOnlyDLLLoader wxMSIMG32DLL(_T("msimg32")); + // =========================================================================== // implementation // =========================================================================== @@ -219,7 +256,7 @@ wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc) m_colFgOld = ::GetTextColor(hdc); m_colBgOld = ::GetBkColor(hdc); - // note that Windows convention is opposite to wxWindows one, this is + // note that Windows convention is opposite to wxWidgets one, this is // why text colour becomes the background one and vice versa const wxColour& colFg = dc.GetTextForeground(); if ( colFg.Ok() ) @@ -238,12 +275,12 @@ wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc) : OPAQUE); // flag which telsl us to undo changes in the dtor - m_changed = TRUE; + m_changed = true; } else { // nothing done, nothing to undo - m_changed = FALSE; + m_changed = false; } } @@ -264,23 +301,6 @@ wxColourChanger::~wxColourChanger() // wxDC // --------------------------------------------------------------------------- -// Default constructor -wxDC::wxDC() -{ - m_canvas = NULL; - - m_oldBitmap = 0; - m_oldPen = 0; - m_oldBrush = 0; - m_oldFont = 0; -#if wxUSE_PALETTE - m_oldPalette = 0; -#endif // wxUSE_PALETTE - - m_bOwnsDC = FALSE; - m_hDC = 0; -} - wxDC::~wxDC() { if ( m_hDC != 0 ) @@ -378,6 +398,24 @@ void wxDC::UpdateClipBox() m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom); } +void +wxDC::DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const +{ + // check if we should try to retrieve the clipping region possibly not set + // by our SetClippingRegion() but preset by Windows:this can only happen + // when we're associated with an existing HDC usign SetHDC(), see there + if ( m_clipping && !m_clipX1 && !m_clipX2 ) + { + wxDC *self = wxConstCast(this, wxDC); + self->UpdateClipBox(); + + if ( !m_clipX1 && !m_clipX2 ) + self->m_clipping = false; + } + + wxDCBase::DoGetClippingBox(x, y, w, h); +} + // common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion() void wxDC::SetClippingHrgn(WXHRGN hrgn) { @@ -388,11 +426,17 @@ void wxDC::SetClippingHrgn(WXHRGN hrgn) // note that we combine the new clipping region with the existing one: this // is compatible with what the other ports do and is the documented // behaviour now (starting with 2.3.3) -#if defined(__WIN16__) || defined(__WXWINCE__) +#if defined(__WXWINCE__) RECT rectClip; if ( !::GetClipBox(GetHdc(), &rectClip) ) return; + // GetClipBox returns logical coordinates, so transform to device + rectClip.left = LogicalToDeviceX(rectClip.left); + rectClip.top = LogicalToDeviceY(rectClip.top); + rectClip.right = LogicalToDeviceX(rectClip.right); + rectClip.bottom = LogicalToDeviceY(rectClip.bottom); + HRGN hrgnDest = ::CreateRectRgn(0, 0, 0, 0); HRGN hrgnClipOld = ::CreateRectRgn(rectClip.left, rectClip.top, rectClip.right, rectClip.bottom); @@ -404,16 +448,16 @@ void wxDC::SetClippingHrgn(WXHRGN hrgn) ::DeleteObject(hrgnClipOld); ::DeleteObject(hrgnDest); -#else // Win32 +#else // !WinCE if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR ) { wxLogLastError(_T("ExtSelectClipRgn")); return; } -#endif // Win16/32 +#endif // WinCE/!WinCE - m_clipping = TRUE; + m_clipping = true; UpdateClipBox(); } @@ -451,6 +495,14 @@ void wxDC::DestroyClippingRegion() if (m_clipping && m_hDC) { +#if 1 + // On a PocketPC device (not necessarily emulator), resetting + // the clip region as per the old method causes bad display + // problems. In fact setting a null region is probably OK + // on desktop WIN32 also, since the WIN32 docs imply that the user + // clipping region is independent from the paint clipping region. + ::SelectClipRgn(GetHdc(), 0); +#else // 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 @@ -458,9 +510,10 @@ void wxDC::DestroyClippingRegion() HRGN rgn = CreateRectRgn(0, 0, 32000, 32000); ::SelectClipRgn(GetHdc(), rgn); ::DeleteObject(rgn); +#endif } - m_clipping = FALSE; + wxDCBase::DestroyClippingRegion(); } // --------------------------------------------------------------------------- @@ -469,14 +522,14 @@ void wxDC::DestroyClippingRegion() bool wxDC::CanDrawBitmap() const { - return TRUE; + return true; } bool wxDC::CanGetTextExtent() const { #ifdef __WXMICROWIN__ // TODO Extend MicroWindows' GetDeviceCaps function - return TRUE; + return true; #else // What sort of display is it? int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY); @@ -513,9 +566,9 @@ void wxDC::Clear() if (!m_selectedBitmap.Ok()) return; - rect.left = 0; rect.top = 0; - rect.right = m_selectedBitmap.GetWidth(); - rect.bottom = m_selectedBitmap.GetHeight(); + rect.left = -m_deviceOriginX; rect.top = -m_deviceOriginY; + rect.right = m_selectedBitmap.GetWidth()-m_deviceOriginX; + rect.bottom = m_selectedBitmap.GetHeight()-m_deviceOriginY; } #ifndef __WXWINCE__ @@ -527,10 +580,10 @@ void wxDC::Clear() ::FillRect(GetHdc(), &rect, brush); ::DeleteObject(brush); +#ifndef __WXWINCE__ int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX, height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY; -#ifndef __WXWINCE__ ::SetMapMode(GetHdc(), MM_ANISOTROPIC); ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); @@ -540,13 +593,15 @@ void wxDC::Clear() #endif } -bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) +bool wxDC::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x), + wxCoord WXUNUSED_IN_WINCE(y), + const wxColour& WXUNUSED_IN_WINCE(col), + int WXUNUSED_IN_WINCE(style)) { #ifdef __WXWINCE__ - return FALSE; + return false; #else - - WXMICROWIN_CHECK_HDC_RET(FALSE) + WXMICROWIN_CHECK_HDC_RET(false) bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), col.GetPixel(), @@ -577,16 +632,16 @@ bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const { - WXMICROWIN_CHECK_HDC_RET(FALSE) + WXMICROWIN_CHECK_HDC_RET(false) - wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") ); + wxCHECK_MSG( col, false, _T("NULL colour parameter in wxDC::GetPixel") ); // get the color of the pixel COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)); wxRGBToColour(*col, pixelcolor); - return TRUE; + return true; } void wxDC::DoCrossHair(wxCoord x, wxCoord y) @@ -681,12 +736,13 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height) { - WXMICROWIN_CHECK_HDC - + // cases when we don't have DrawFrameControl() +#if defined(__SYMANTEC__) || defined(__WXMICROWIN__) + return wxDCBase::DoDrawCheckMark(x1, y1, width, height); +#else // normal case wxCoord x2 = x1 + width, y2 = y1 + height; -#if defined(__WIN32__) && !defined(__SYMANTEC__) && !defined(__WXMICROWIN__) RECT rect; rect.left = x1; rect.top = y1; @@ -698,25 +754,10 @@ void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, #else DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK); #endif -#else // Win16 - // In WIN16, draw a cross - HPEN blackPen = ::CreatePen(PS_SOLID, 1, RGB(0, 0, 0)); - HPEN whiteBrush = (HPEN)::GetStockObject(WHITE_BRUSH); - HPEN hPenOld = (HPEN)::SelectObject(GetHdc(), blackPen); - HPEN hBrushOld = (HPEN)::SelectObject(GetHdc(), whiteBrush); - ::SetROP2(GetHdc(), R2_COPYPEN); - Rectangle(GetHdc(), x1, y1, x2, y2); - MoveToEx(GetHdc(), x1, y1, NULL); - LineTo(GetHdc(), x2, y2); - MoveToEx(GetHdc(), x2, y1, NULL); - LineTo(GetHdc(), x1, y2); - ::SelectObject(GetHdc(), hPenOld); - ::SelectObject(GetHdc(), hBrushOld); - ::DeleteObject(blackPen); -#endif // Win32/16 CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); +#endif // Microwin/Normal } void wxDC::DoDrawPoint(wxCoord x, wxCoord y) @@ -734,7 +775,11 @@ void wxDC::DoDrawPoint(wxCoord x, wxCoord y) CalcBoundingBox(x, y); } -void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle) +void wxDC::DoDrawPolygon(int n, + wxPoint points[], + wxCoord xoffset, + wxCoord yoffset, + int WXUNUSED_IN_WINCE(fillStyle)) { WXMICROWIN_CHECK_HDC @@ -779,18 +824,21 @@ void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffs void wxDC::DoDrawPolyPolygon(int n, - int start[], + int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, int fillStyle) { +#ifdef __WXWINCE__ + wxDCBase::DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); +#else WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling int i, cnt; for (i = cnt = 0; i < n; i++) - cnt += start[i]; + cnt += count[i]; // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) @@ -803,9 +851,13 @@ wxDC::DoDrawPolyPolygon(int n, CalcBoundingBox(cpoints[i].x, cpoints[i].y); } +#ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); - (void)PolyPolygon(GetHdc(), cpoints, start, n); +#endif + (void)PolyPolygon(GetHdc(), cpoints, count, n); +#ifndef __WXWINCE__ SetPolyFillMode(GetHdc(),prev); +#endif delete[] cpoints; } else @@ -813,10 +865,16 @@ wxDC::DoDrawPolyPolygon(int n, for (i = 0; i < cnt; i++) CalcBoundingBox(points[i].x, points[i].y); +#ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); - (void)PolyPolygon(GetHdc(), (POINT*) points, start, n); +#endif + (void)PolyPolygon(GetHdc(), (POINT*) points, count, n); +#ifndef __WXWINCE__ SetPolyFillMode(GetHdc(),prev); +#endif } +#endif + // __WXWINCE__ } void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) @@ -872,11 +930,14 @@ void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) // transparent pen) one pixel smaller in both directions and we want them // to have the same size regardless of which pen is used - adjust - // I wonder if this shouldn´t be done after the LOG2DEV() conversions. RR. + // I wonder if this shouldnt be done after the LOG2DEV() conversions. RR. if ( m_pen.GetStyle() == wxTRANSPARENT ) { + // Apparently not needed for WinCE (see e.g. Life! demo) +#ifndef __WXWINCE__ x2++; y2++; +#endif } (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); @@ -936,6 +997,105 @@ void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) CalcBoundingBox(x2, y2); } +#if wxUSE_SPLINES +void wxDC::DoDrawSpline(wxList *points) +{ +#ifdef __WXWINCE__ + // WinCE does not support ::PolyBezier so use generic version + wxDCBase::DoDrawSpline(points); +#else + // quadratic b-spline to cubic bezier spline conversion + // + // quadratic spline with control points P0,P1,P2 + // P(s) = P0*(1-s)^2 + P1*2*(1-s)*s + P2*s^2 + // + // bezier spline with control points B0,B1,B2,B3 + // B(s) = B0*(1-s)^3 + B1*3*(1-s)^2*s + B2*3*(1-s)*s^2 + B3*s^3 + // + // control points of bezier spline calculated from b-spline + // B0 = P0 + // B1 = (2*P1 + P0)/3 + // B2 = (2*P1 + P2)/3 + // B3 = P2 + + WXMICROWIN_CHECK_HDC + + wxASSERT_MSG( points, wxT("NULL pointer to spline points?") ); + + const size_t n_points = points->GetCount(); + wxASSERT_MSG( n_points > 2 , wxT("incomplete list of spline points?") ); + + const size_t n_bezier_points = n_points * 3 + 1; + POINT *lppt = (POINT *)malloc(n_bezier_points*sizeof(POINT)); + size_t bezier_pos = 0; + wxCoord x1, y1, x2, y2, cx1, cy1, cx4, cy4; + + wxList::compatibility_iterator node = points->GetFirst(); + wxPoint *p = (wxPoint *)node->GetData(); + lppt[ bezier_pos ].x = x1 = p->x; + lppt[ bezier_pos ].y = y1 = p->y; + bezier_pos++; + lppt[ bezier_pos ] = lppt[ bezier_pos-1 ]; + bezier_pos++; + + node = node->GetNext(); + p = (wxPoint *)node->GetData(); + + x2 = p->x; + y2 = p->y; + cx1 = ( x1 + x2 ) / 2; + cy1 = ( y1 + y2 ) / 2; + lppt[ bezier_pos ].x = XLOG2DEV(cx1); + lppt[ bezier_pos ].y = YLOG2DEV(cy1); + bezier_pos++; + lppt[ bezier_pos ] = lppt[ bezier_pos-1 ]; + bezier_pos++; + +#if !wxUSE_STL + while ((node = node->GetNext()) != NULL) +#else + while ((node = node->GetNext())) +#endif // !wxUSE_STL + { + p = (wxPoint *)node->GetData(); + x1 = x2; + y1 = y2; + x2 = p->x; + y2 = p->y; + cx4 = (x1 + x2) / 2; + cy4 = (y1 + y2) / 2; + // B0 is B3 of previous segment + // B1: + lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx1)/3); + lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy1)/3); + bezier_pos++; + // B2: + lppt[ bezier_pos ].x = XLOG2DEV((x1*2+cx4)/3); + lppt[ bezier_pos ].y = YLOG2DEV((y1*2+cy4)/3); + bezier_pos++; + // B3: + lppt[ bezier_pos ].x = XLOG2DEV(cx4); + lppt[ bezier_pos ].y = YLOG2DEV(cy4); + bezier_pos++; + cx1 = cx4; + cy1 = cy4; + } + + lppt[ bezier_pos ] = lppt[ bezier_pos-1 ]; + bezier_pos++; + lppt[ bezier_pos ].x = XLOG2DEV(x2); + lppt[ bezier_pos ].y = YLOG2DEV(y2); + bezier_pos++; + lppt[ bezier_pos ] = lppt[ bezier_pos-1 ]; + bezier_pos++; + + ::PolyBezier( GetHdc(), lppt, bezier_pos ); + + free(lppt); +#endif +} +#endif + // 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) { @@ -1023,7 +1183,7 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask MemoryHDC hdcMem; SelectInHDC select(hdcMem, GetHbitmapOf(bmp)); - if ( AlphaBlt(GetHdc(), x, y, width, height, hdcMem, bmp) ) + if ( AlphaBlt(GetHdc(), x, y, width, height, 0, 0, hdcMem, bmp) ) return; } @@ -1037,7 +1197,7 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter - useMask = FALSE; + useMask = false; } } if ( useMask ) @@ -1046,9 +1206,9 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask // use MaskBlt() with ROP which doesn't do anything to dst in the mask // points // On some systems, MaskBlt succeeds yet is much much slower - // than the wxWindows fall-back implementation. So we need + // than the wxWidgets fall-back implementation. So we need // to be able to switch this on and off at runtime. - bool ok = FALSE; + bool ok = false; #if wxUSE_SYSTEM_OPTIONS if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0) #endif @@ -1085,7 +1245,8 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask // Rather than reproduce wxDC::Blit, let's do it at the wxWin API // level wxMemoryDC memDC; - memDC.SelectObject(bmp); + + memDC.SelectObjectAsSource(bmp); Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask); @@ -1248,13 +1409,13 @@ void wxDC::DoDrawRotatedText(const wxString& text, // "upper left" and "upper right" CalcBoundingBox(x, y); - CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(h*sin(rad))); + CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad))); // "bottom left" and "bottom right" x += (wxCoord)(h*sin(rad)); y += (wxCoord)(h*cos(rad)); CalcBoundingBox(x, y); - CalcBoundingBox(x + wxCoord(h*sin(rad)), y + wxCoord(h*cos(rad))); + CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad))); } #endif } @@ -1281,7 +1442,7 @@ void wxDC::DoSelectPalette(bool realize) { HPALETTE oldPal = ::SelectPalette(GetHdc(), GetHpaletteOf(m_palette), - FALSE); + false); if (!m_oldPalette) m_oldPalette = (WXHPALETTE) oldPal; @@ -1295,7 +1456,7 @@ void wxDC::SetPalette(const wxPalette& palette) if ( palette.Ok() ) { m_palette = palette; - DoSelectPalette(TRUE); + DoSelectPalette(true); } } @@ -1320,36 +1481,44 @@ void wxDC::InitializePalette() #endif // wxUSE_PALETTE -void wxDC::SetFont(const wxFont& the_font) +// SetFont/Pen/Brush() really ask to be implemented as a single template +// function... but doing it is not worth breaking OpenWatcom build + +void wxDC::SetFont(const wxFont& font) { WXMICROWIN_CHECK_HDC - // 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 ( font == m_font ) + return; - if (!the_font.Ok()) + if ( font.Ok() ) { - if (m_oldFont) - ::SelectObject(GetHdc(), (HFONT) m_oldFont); - m_oldFont = 0; - } + HGDIOBJ hfont = ::SelectObject(GetHdc(), GetHfontOf(font)); + if ( hfont == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(font)")); + } + else // selected ok + { + if ( !m_oldFont ) + m_oldFont = (WXHFONT)hfont; - if (m_font.Ok() && m_font.GetResourceHandle()) + m_font = font; + } + } + else // invalid font, reset the current font { - HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle()); - if (f == (HFONT) NULL) + if ( m_oldFont ) { - wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont.")); + if ( ::SelectObject(GetHdc(), (HPEN) m_oldFont) == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(old font)")); + } + + m_oldFont = 0; } - if (!m_oldFont) - m_oldFont = (WXHFONT) f; + + m_font = wxNullFont; } } @@ -1384,7 +1553,7 @@ void wxDC::SetPen(const wxPen& pen) wxLogLastError(_T("SelectObject(old pen)")); } - m_oldPen = NULL; + m_oldPen = 0; } m_pen = wxNullPen; @@ -1395,48 +1564,55 @@ void wxDC::SetBrush(const wxBrush& brush) { WXMICROWIN_CHECK_HDC - // 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 ( brush == m_brush ) + return; - if (m_brush.Ok()) + if ( brush.Ok() ) { - // to make sure the brush is alligned with the logical coordinates - wxBitmap *stipple = m_brush.GetStipple(); + // we must make sure the brush is aligned with the logical coordinates + // before selecting it + wxBitmap *stipple = brush.GetStipple(); if ( stipple && stipple->Ok() ) { -#ifdef __WIN32__ - ::SetBrushOrgEx(GetHdc(), - m_deviceOriginX % stipple->GetWidth(), - m_deviceOriginY % stipple->GetHeight(), - NULL); // don't need previous brush origin -#else - ::SetBrushOrg(GetHdc(), - m_deviceOriginX % stipple->GetWidth(), - m_deviceOriginY % stipple->GetHeight()); -#endif + if ( !::SetBrushOrgEx + ( + GetHdc(), + m_deviceOriginX % stipple->GetWidth(), + m_deviceOriginY % stipple->GetHeight(), + NULL // [out] previous brush origin + ) ) + { + wxLogLastError(_T("SetBrushOrgEx()")); + } } - if ( m_brush.GetResourceHandle() ) + HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush)); + if ( hbrush == HGDI_ERROR ) { - HBRUSH b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle()); - if (!m_oldBrush) - m_oldBrush = (WXHBRUSH) b; + wxLogLastError(_T("SelectObject(brush)")); + } + else // selected ok + { + if ( !m_oldBrush ) + m_oldBrush = (WXHBRUSH)hbrush; + + m_brush = brush; } } + else // invalid brush, reset the current brush + { + if ( m_oldBrush ) + { + if ( ::SelectObject(GetHdc(), (HPEN) m_oldBrush) == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(old brush)")); + } + + m_oldBrush = 0; + } + + m_brush = wxNullBrush; + } } void wxDC::SetBackground(const wxBrush& brush) @@ -1506,8 +1682,8 @@ void wxDC::SetRop(WXHDC dc) bool wxDC::StartDoc(const wxString& WXUNUSED(message)) { - // We might be previewing, so return TRUE to let it continue. - return TRUE; + // We might be previewing, so return true to let it continue. + return true; } void wxDC::EndDoc() @@ -1576,10 +1752,42 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, } SIZE sizeRect; - TEXTMETRIC tm; + const size_t len = string.length(); + if ( !::GetTextExtentPoint32(GetHdc(), string, len, &sizeRect) ) + { + wxLogLastError(_T("GetTextExtentPoint32()")); + } + +#if !defined(_WIN32_WCE) || (_WIN32_WCE >= 400) + // the result computed by GetTextExtentPoint32() may be too small as it + // accounts for under/overhang of the first/last character while we want + // just the bounding rect for this string so adjust the width as needed + // (using API not available in 2002 SDKs of WinCE) + if ( len > 0 ) + { + ABC width; + const wxChar chFirst = *string.begin(); + if ( ::GetCharABCWidths(GetHdc(), chFirst, chFirst, &width) ) + { + if ( width.abcA < 0 ) + sizeRect.cx -= width.abcA; + + if ( len > 1 ) + { + const wxChar chLast = *string.rbegin(); + ::GetCharABCWidths(GetHdc(), chLast, chLast, &width); + } + //else: we already have the width of the last character + + if ( width.abcC < 0 ) + sizeRect.cx -= width.abcC; + } + //else: GetCharABCWidths() failed, not a TrueType font? + } +#endif // !defined(_WIN32_WCE) || (_WIN32_WCE >= 400) - GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect); - GetTextMetrics(GetHdc(), &tm); + TEXTMETRIC tm; + ::GetTextMetrics(GetHdc(), &tm); if (x) *x = sizeRect.cx; @@ -1596,6 +1804,51 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, } } + +// Each element of the array will be the width of the string up to and +// including the coresoponding character in text. + +bool wxDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const +{ + static int maxLenText = -1; + static int maxWidth = -1; + int fit = 0; + SIZE sz = {0,0}; + int stlen = text.length(); + + if (maxLenText == -1) + { + // Win9x and WinNT+ have different limits + int version = wxGetOsVersion(); + maxLenText = version == wxOS_WINDOWS_NT ? 65535 : 8192; + maxWidth = version == wxOS_WINDOWS_NT ? INT_MAX : 32767; + } + + widths.Empty(); + widths.Add(0, stlen); // fill the array with zeros + if (stlen == 0) + return true; + + if (!::GetTextExtentExPoint(GetHdc(), + text.c_str(), // string to check + wxMin(stlen, maxLenText), + maxWidth, + &fit, // [out] count of chars + // that will fit + &widths[0], // array to fill + &sz)) + { + // API failed + wxLogLastError(wxT("GetTextExtentExPoint")); + return false; + } + + return true; +} + + + + void wxDC::SetMapMode(int mode) { WXMICROWIN_CHECK_HDC @@ -1671,18 +1924,17 @@ void wxDC::SetUserScale(double x, double y) { WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_userScaleX && y == m_userScaleY ) return; m_userScaleX = x; m_userScaleY = y; - SetMapMode(m_mappingMode); -#endif + this->SetMapMode(m_mappingMode); } -void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) +void wxDC::SetAxisOrientation(bool WXUNUSED_IN_WINCE(xLeftRight), + bool WXUNUSED_IN_WINCE(yBottomUp)) { WXMICROWIN_CHECK_HDC @@ -1704,13 +1956,13 @@ void wxDC::SetSystemScale(double x, double y) { WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_scaleX && y == m_scaleY ) return; m_scaleX = x; m_scaleY = y; +#ifndef __WXWINCE__ SetMapMode(m_mappingMode); #endif } @@ -1719,13 +1971,13 @@ void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) { WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_logicalOriginX && y == m_logicalOriginY ) return; m_logicalOriginX = x; m_logicalOriginY = y; +#ifndef __WXWINCE__ ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); #endif } @@ -1734,7 +1986,6 @@ void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) { WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_deviceOriginX && y == m_deviceOriginY ) return; @@ -1742,7 +1993,6 @@ void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) m_deviceOriginY = y; ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); -#endif } // --------------------------------------------------------------------------- @@ -1803,16 +2053,19 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, int rop, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) { - wxCHECK_MSG( source, FALSE, _T("wxDC::Blit(): NULL wxDC pointer") ); + wxCHECK_MSG( source, false, _T("wxDC::Blit(): NULL wxDC pointer") ); - WXMICROWIN_CHECK_HDC_RET(FALSE) + WXMICROWIN_CHECK_HDC_RET(false) + // if either the source or destination has alpha channel, we must use + // AlphaBlt() as other function don't handle it correctly const wxBitmap& bmpSrc = source->m_selectedBitmap; - if ( bmpSrc.Ok() && bmpSrc.HasAlpha() ) + if ( bmpSrc.Ok() && (bmpSrc.HasAlpha() || + (m_selectedBitmap.Ok() && m_selectedBitmap.HasAlpha())) ) { if ( AlphaBlt(GetHdc(), xdest, ydest, width, height, - GetHdcOf(*source), bmpSrc) ) - return TRUE; + xsrc, ysrc, GetHdcOf(*source), bmpSrc) ) + return true; } wxMask *mask = NULL; @@ -1824,7 +2077,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter - useMask = FALSE; + useMask = false; } } @@ -1865,10 +2118,10 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, case wxNOR: dwRop = NOTSRCCOPY; break; default: wxFAIL_MSG( wxT("unsupported logical function") ); - return FALSE; + return false; } - bool success = FALSE; + bool success = false; if (useMask) { @@ -1879,7 +2132,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, // of the mask which is also contrary to the Windows one) // On some systems, MaskBlt succeeds yet is much much slower - // than the wxWindows fall-back implementation. So we need + // than the wxWidgets fall-back implementation. So we need // to be able to switch this on and off at runtime. #if wxUSE_SYSTEM_OPTIONS if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0) @@ -2018,14 +2271,18 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, ds.dsBm.bmBits, (LPBITMAPINFO)&ds.dsBmih, DIB_RGB_COLORS, - SRCCOPY + dwRop ) == (int)GDI_ERROR ) { - wxLogLastError(wxT("StretchDIBits")); + // On Win9x this API fails most (all?) of the time, so + // logging it becomes quite distracting. Since it falls + // back to the code below this is not really serious, so + // don't log it. + //wxLogLastError(wxT("StretchDIBits")); } else { - success = TRUE; + success = true; } } } @@ -2051,7 +2308,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } else { - success = TRUE; + success = true; } } @@ -2071,7 +2328,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } else { - success = TRUE; + success = true; } } } @@ -2082,12 +2339,14 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, return success; } -void wxDC::DoGetSize(int *w, int *h) const +void wxDC::GetDeviceSize(int *width, int *height) const { WXMICROWIN_CHECK_HDC - if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES); - if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES); + if ( width ) + *width = ::GetDeviceCaps(GetHdc(), HORZRES); + if ( height ) + *height = ::GetDeviceCaps(GetHdc(), VERTRES); } void wxDC::DoGetSizeMM(int *w, int *h) const @@ -2122,7 +2381,7 @@ void wxDC::DoGetSizeMM(int *w, int *h) const wxSize wxDC::GetPPI() const { - WXMICROWIN_CHECK_HDC_RET(wxSize()) + WXMICROWIN_CHECK_HDC_RET(wxSize(0,0)) int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); @@ -2130,7 +2389,7 @@ wxSize wxDC::GetPPI() const return wxSize(x, y); } -// For use by wxWindows only, unless custom units are required. +// For use by wxWidgets only, unless custom units are required. void wxDC::SetLogicalScale(double x, double y) { WXMICROWIN_CHECK_HDC @@ -2265,7 +2524,7 @@ void wxDC::ClearCache() class wxDCModule : public wxModule { public: - virtual bool OnInit() { return TRUE; } + virtual bool OnInit() { return true; } virtual void OnExit() { wxDC::ClearCache(); } private: @@ -2282,7 +2541,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule) static bool AlphaBlt(HDC hdcDst, int x, int y, int width, int height, - HDC hdcSrc, + int srcX, int srcY, HDC hdcSrc, const wxBitmap& bmp) { wxASSERT_MSG( bmp.Ok() && bmp.HasAlpha(), _T("AlphaBlt(): invalid bitmap") ); @@ -2295,32 +2554,8 @@ static bool AlphaBlt(HDC hdcDst, HDC,int,int,int,int, BLENDFUNCTION); - // bitmaps can be drawn only from GUI thread so there is no need to - // protect this static variable from multiple threads - static bool s_triedToLoad = FALSE; - static AlphaBlend_t pfnAlphaBlend = NULL; - if ( !s_triedToLoad ) - { - s_triedToLoad = TRUE; - - // don't give errors about the DLL being unavailable, we're - // prepared to handle this - wxLogNull nolog; - - wxDynamicLibrary dll(_T("msimg32.dll")); - if ( dll.IsLoaded() ) - { - pfnAlphaBlend = (AlphaBlend_t)dll.GetSymbol(_T("AlphaBlend")); - if ( pfnAlphaBlend ) - { - // we must keep the DLL loaded if we want to be able to - // call AlphaBlend() so just never unload it at all, not a - // big deal - dll.Detach(); - } - } - } - + static AlphaBlend_t + pfnAlphaBlend = (AlphaBlend_t)wxMSIMG32DLL.GetSymbol(_T("AlphaBlend")); if ( pfnAlphaBlend ) { BLENDFUNCTION bf; @@ -2330,27 +2565,30 @@ static bool AlphaBlt(HDC hdcDst, bf.AlphaFormat = AC_SRC_ALPHA; if ( pfnAlphaBlend(hdcDst, x, y, width, height, - hdcSrc, 0, 0, width, height, + hdcSrc, srcX, srcY, width, height, bf) ) { // skip wxAlphaBlend() call below - return TRUE; + return true; } wxLogLastError(_T("AlphaBlend")); } +#else + wxUnusedVar(hdcSrc); #endif // defined(AC_SRC_OVER) // AlphaBlend() unavailable of failed: use our own (probably much slower) // implementation #ifdef wxHAVE_RAW_BITMAP - wxAlphaBlend(hdcDst, x, y, width, height, bmp); + wxAlphaBlend(hdcDst, x, y, width, height, srcX, srcY, bmp); - return TRUE; + return true; #else // !wxHAVE_RAW_BITMAP // no wxAlphaBlend() neither, fall back to using simple BitBlt() (we lose // alpha but at least something will be shown like this) - return FALSE; + wxUnusedVar(bmp); + return false; #endif // wxHAVE_RAW_BITMAP } @@ -2359,14 +2597,16 @@ static bool AlphaBlt(HDC hdcDst, #ifdef wxHAVE_RAW_BITMAP static void -wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSrc) +wxAlphaBlend(HDC hdcDst, int xDst, int yDst, + int w, int h, + int srcX, int srcY, const wxBitmap& bmpSrc) { // get the destination DC pixels wxBitmap bmpDst(w, h, 32 /* force creating RGBA DIB */); MemoryHDC hdcMem; SelectInHDC select(hdcMem, GetHbitmapOf(bmpDst)); - if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, 0, 0, SRCCOPY) ) + if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, xDst, yDst, SRCCOPY) ) { wxLogLastError(_T("BitBlt")); } @@ -2381,6 +2621,8 @@ wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSr wxAlphaPixelData::Iterator pDst(dataDst), pSrc(dataSrc); + pSrc.Offset(dataSrc, srcX, srcY); + for ( int y = 0; y < h; y++ ) { wxAlphaPixelData::Iterator pDstRowStart = pDst, @@ -2414,3 +2656,110 @@ wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, const wxBitmap& bmpSr } #endif // #ifdef wxHAVE_RAW_BITMAP + +void wxDC::DoGradientFillLinear (const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection) +{ + // use native function if we have compile-time support it and can load it + // during run-time (linking to it statically would make the program + // unusable on earlier Windows versions) +#if defined(GRADIENT_FILL_RECT_H) && wxUSE_DYNLIB_CLASS + typedef BOOL + (WINAPI *GradientFill_t)(HDC, PTRIVERTEX, ULONG, PVOID, ULONG, ULONG); + static GradientFill_t pfnGradientFill = + (GradientFill_t)wxMSIMG32DLL.GetSymbol(_T("GradientFill")); + + if ( pfnGradientFill ) + { + GRADIENT_RECT grect; + grect.UpperLeft = 0; + grect.LowerRight = 1; + + // invert colours direction if not filling from left-to-right or + // top-to-bottom + int firstVertex = nDirection == wxNORTH || nDirection == wxWEST ? 1 : 0; + + // one vertex for upper left and one for upper-right + TRIVERTEX vertices[2]; + + vertices[0].x = rect.GetLeft(); + vertices[0].y = rect.GetTop(); + vertices[1].x = rect.GetRight()+1; + vertices[1].y = rect.GetBottom()+1; + + vertices[firstVertex].Red = (COLOR16)(initialColour.Red() << 8); + vertices[firstVertex].Green = (COLOR16)(initialColour.Green() << 8); + vertices[firstVertex].Blue = (COLOR16)(initialColour.Blue() << 8); + vertices[firstVertex].Alpha = 0; + vertices[1 - firstVertex].Red = (COLOR16)(destColour.Red() << 8); + vertices[1 - firstVertex].Green = (COLOR16)(destColour.Green() << 8); + vertices[1 - firstVertex].Blue = (COLOR16)(destColour.Blue() << 8); + vertices[1 - firstVertex].Alpha = 0; + + if ( (*pfnGradientFill) + ( + GetHdc(), + vertices, + WXSIZEOF(vertices), + &grect, + 1, + nDirection == wxWEST || nDirection == wxEAST + ? GRADIENT_FILL_RECT_H + : GRADIENT_FILL_RECT_V + ) ) + { + // skip call of the base class version below + return; + } + + wxLogLastError(_T("GradientFill")); + } +#endif // wxUSE_DYNLIB_CLASS + + wxDCBase::DoGradientFillLinear(rect, initialColour, destColour, nDirection); +} + +static DWORD wxGetDCLayout(HDC hdc) +{ + typedef DWORD (WINAPI *GetLayout_t)(HDC); + static GetLayout_t + pfnGetLayout = (GetLayout_t)wxGDI32DLL.GetSymbol(_T("GetLayout")); + + return pfnGetLayout ? pfnGetLayout(hdc) : (DWORD)-1; +} + +wxLayoutDirection wxDC::GetLayoutDirection() const +{ + DWORD layout = wxGetDCLayout(GetHdc()); + + if ( layout == (DWORD)-1 ) + return wxLayout_Default; + + return layout & LAYOUT_RTL ? wxLayout_RightToLeft : wxLayout_LeftToRight; +} + +void wxDC::SetLayoutDirection(wxLayoutDirection dir) +{ + typedef DWORD (WINAPI *SetLayout_t)(HDC, DWORD); + static SetLayout_t + pfnSetLayout = (SetLayout_t)wxGDI32DLL.GetSymbol(_T("SetLayout")); + if ( !pfnSetLayout ) + return; + + if ( dir == wxLayout_Default ) + { + dir = wxTheApp->GetLayoutDirection(); + if ( dir == wxLayout_Default ) + return; + } + + DWORD layout = wxGetDCLayout(GetHdc()); + if ( dir == wxLayout_RightToLeft ) + layout |= LAYOUT_RTL; + else + layout &= ~LAYOUT_RTL; + + pfnSetLayout(GetHdc(), layout); +}