X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/994a3786b974a2c5b8dfce631193ae0031e7da3f..85d3d198c2fa866d39763ace3eebf14c0d164ba7:/src/msw/dc.cpp diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp index 09d21ad3d0..dd4750f6a0 100644 --- a/src/msw/dc.cpp +++ b/src/msw/dc.cpp @@ -1,11 +1,11 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem +// Copyright: (c) Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// @@ -17,10 +17,6 @@ // headers // --------------------------------------------------------------------------- -#ifdef __GNUG__ - #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" @@ -38,23 +36,44 @@ #include "wx/dcmemory.h" #include "wx/log.h" #include "wx/icon.h" + #include "wx/dcprint.h" + #include "wx/module.h" #endif #include "wx/sysopt.h" -#include "wx/dcprint.h" -#include "wx/module.h" +#include "wx/dynlib.h" + +#ifdef wxHAVE_RAW_BITMAP +#include "wx/rawbmp.h" +#endif #include -#include -#include "wx/msw/private.h" // needs to be before #include +#ifndef __WIN32__ + #include +#endif -#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__) - #include +#ifndef AC_SRC_ALPHA + #define AC_SRC_ALPHA 1 #endif -#ifndef __WIN32__ - #include +#ifndef LAYOUT_RTL + #define LAYOUT_RTL 1 +#endif + +/* Quaternary raster codes */ +#ifndef MAKEROP4 +#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore)) +#endif + +// apparently with MicroWindows it is possible that HDC is 0 so we have to +// check for this ourselves +#ifdef __WXMICROWIN__ + #define WXMICROWIN_CHECK_HDC if ( !GetHDC() ) return; + #define WXMICROWIN_CHECK_HDC_RET(x) if ( !GetHDC() ) return x; +#else + #define WXMICROWIN_CHECK_HDC + #define WXMICROWIN_CHECK_HDC_RET(x) #endif IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase) @@ -68,11 +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 @@ -88,13 +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 @@ -103,6 +121,28 @@ static const int MM_METRIC = 10; // convert degrees to radians static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } +// call AlphaBlend() to blit contents of hdcSrc to hdcDst using alpha +// +// NB: bmpSrc is the bitmap selected in hdcSrc, it is not really needed +// to pass it to this function but as we already have it at the point +// of call anyhow we do +// +// return true if we could draw the bitmap in one way or the other, false +// otherwise +static bool AlphaBlt(HDC hdcDst, + int x, int y, int w, int h, + int srcX, int srcY, HDC hdcSrc, + const wxBitmap& bmpSrc); + +#ifdef wxHAVE_RAW_BITMAP + +// our (limited) AlphaBlend() replacement for Windows versions not providing it +static void +wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, + int srcX, int srcY, const wxBitmap& bmp); + +#endif // wxHAVE_RAW_BITMAP + // ---------------------------------------------------------------------------- // private classes // ---------------------------------------------------------------------------- @@ -125,8 +165,80 @@ private: COLORREF m_colFgOld, m_colBgOld; bool m_changed; + + DECLARE_NO_COPY_CLASS(wxColourChanger) }; +// this class saves the old stretch blit mode during its life time +class StretchBltModeChanger +{ +public: + StretchBltModeChanger(HDC hdc, + int WXUNUSED_IN_WINCE(mode)) + : m_hdc(hdc) + { +#ifndef __WXWINCE__ + m_modeOld = ::SetStretchBltMode(m_hdc, mode); + if ( !m_modeOld ) + wxLogLastError(_T("SetStretchBltMode")); +#endif + } + + ~StretchBltModeChanger() + { +#ifndef __WXWINCE__ + if ( !::SetStretchBltMode(m_hdc, m_modeOld) ) + wxLogLastError(_T("SetStretchBltMode")); +#endif + } + +private: + const HDC m_hdc; + + int m_modeOld; + + 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 // =========================================================================== @@ -144,7 +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() ) @@ -163,12 +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; } } @@ -189,23 +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 ) @@ -243,10 +338,12 @@ void wxDC::SelectOldObjects(WXHDC dc) if (m_oldBitmap) { ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap); +#ifdef __WXDEBUG__ if (m_selectedBitmap.Ok()) { m_selectedBitmap.SetSelectedInto(NULL); } +#endif } m_oldBitmap = 0; if (m_oldPen) @@ -290,9 +387,7 @@ void wxDC::SelectOldObjects(WXHDC dc) void wxDC::UpdateClipBox() { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC RECT rect; ::GetClipBox(GetHdc(), &rect); @@ -303,23 +398,45 @@ 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) { wxCHECK_RET( hrgn, wxT("invalid clipping region") ); -#ifdef __WXMICROWIN__ - if (!GetHdc()) return; -#endif // __WXMICROWIN__ + WXMICROWIN_CHECK_HDC // 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) -#ifdef __WIN16__ +#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); @@ -331,16 +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(); } @@ -374,12 +491,18 @@ void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) void wxDC::DestroyClippingRegion() { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC 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 @@ -387,9 +510,10 @@ void wxDC::DestroyClippingRegion() HRGN rgn = CreateRectRgn(0, 0, 32000, 32000); ::SelectClipRgn(GetHdc(), rgn); ::DeleteObject(rgn); +#endif } - m_clipping = FALSE; + wxDCBase::DestroyClippingRegion(); } // --------------------------------------------------------------------------- @@ -398,14 +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); @@ -416,9 +540,7 @@ bool wxDC::CanGetTextExtent() const int wxDC::GetDepth() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return 16; -#endif + WXMICROWIN_CHECK_HDC_RET(16) return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL); } @@ -429,9 +551,7 @@ int wxDC::GetDepth() const void wxDC::Clear() { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC RECT rect; if ( m_canvas ) @@ -446,38 +566,48 @@ 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__ (void) ::SetMapMode(GetHdc(), MM_TEXT); +#endif DWORD colour = ::GetBkColor(GetHdc()); HBRUSH brush = ::CreateSolidBrush(colour); ::FillRect(GetHdc(), &rect, brush); ::DeleteObject(brush); +#ifndef __WXWINCE__ int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX, height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY; ::SetMapMode(GetHdc(), MM_ANISOTROPIC); + ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); ::SetWindowExtEx(GetHdc(), width, height, NULL); ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); +#endif } -void 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 __WXMICROWIN__ - if (!GetHDC()) return; -#endif +#ifdef __WXWINCE__ + return false; +#else + WXMICROWIN_CHECK_HDC_RET(false) - if ( !::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), + bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), col.GetPixel(), style == wxFLOOD_SURFACE ? FLOODFILLSURFACE - : FLOODFILLBORDER) ) + : FLOODFILLBORDER) ) ; + if (!success) { // quoting from the MSDN docs: // @@ -495,40 +625,36 @@ void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) } CalcBoundingBox(x, y); + + return success; +#endif } bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return FALSE; -#endif + 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) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC 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)); + wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y)); + wxDrawLine(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), XLOG2DEV(x), YLOG2DEV(y2)); CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); @@ -536,12 +662,9 @@ void wxDC::DoCrossHair(wxCoord x, wxCoord y) void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC - (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL); - (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2)); + wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2)); CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); @@ -553,9 +676,16 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif +#ifdef __WXWINCE__ + // Slower emulation since WinCE doesn't support Pie and Arc + double r = sqrt( (x1-xc)*(x1-xc) + (y1-yc)*(y1-yc) ); + double sa = acos((x1-xc)/r)/M_PI*180; // between 0 and 180 + if( y1>yc ) sa = -sa; // below center + double ea = atan2(yc-y2, x2-xc)/M_PI*180; + DoDrawEllipticArcRot( xc-r, yc-r, 2*r, 2*r, sa, ea ); +#else + + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -600,52 +730,39 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, CalcBoundingBox(xc - r, yc - r); CalcBoundingBox(xc + r, yc + r); +#endif } void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif - + // 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(__SC__) && !defined(__WXMICROWIN__) RECT rect; rect.left = x1; rect.top = y1; rect.right = x2; rect.bottom = y2; +#ifdef __WXWINCE__ + DrawFrameControl(GetHdc(), &rect, DFC_BUTTON, DFCS_BUTTONCHECK); +#else DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK); -#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 +#endif CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); +#endif // Microwin/Normal } void wxDC::DoDrawPoint(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC COLORREF color = 0x00ffffff; if (m_pen.Ok()) @@ -658,11 +775,13 @@ 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)) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -678,9 +797,13 @@ void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffs CalcBoundingBox(cpoints[i].x, cpoints[i].y); } +#ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); +#endif (void)Polygon(GetHdc(), cpoints, n); +#ifndef __WXWINCE__ SetPolyFillMode(GetHdc(),prev); +#endif delete[] cpoints; } else @@ -689,17 +812,74 @@ void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffs for (i = 0; i < n; i++) CalcBoundingBox(points[i].x, points[i].y); +#ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); +#endif (void)Polygon(GetHdc(), (POINT*) points, n); +#ifndef __WXWINCE__ SetPolyFillMode(GetHdc(),prev); +#endif } } -void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) +void +wxDC::DoDrawPolyPolygon(int n, + int count[], + wxPoint points[], + wxCoord xoffset, + wxCoord yoffset, + int fillStyle) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; +#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 += count[i]; + + // Do things less efficiently if we have offsets + if (xoffset != 0 || yoffset != 0) + { + POINT *cpoints = new POINT[cnt]; + for (i = 0; i < cnt; i++) + { + cpoints[i].x = (int)(points[i].x + xoffset); + cpoints[i].y = (int)(points[i].y + yoffset); + + CalcBoundingBox(cpoints[i].x, cpoints[i].y); + } +#ifndef __WXWINCE__ + int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); #endif + (void)PolyPolygon(GetHdc(), cpoints, count, n); +#ifndef __WXWINCE__ + SetPolyFillMode(GetHdc(),prev); +#endif + delete[] cpoints; + } + else + { + for (i = 0; i < cnt; i++) + CalcBoundingBox(points[i].x, points[i].y); + +#ifndef __WXWINCE__ + int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); +#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) +{ + WXMICROWIN_CHECK_HDC // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) @@ -728,9 +908,7 @@ void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -752,11 +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)); @@ -769,9 +950,7 @@ void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -780,11 +959,7 @@ void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord h if (radius < 0.0) { - double smallest = 0.0; - if (width < height) - smallest = width; - else - smallest = height; + double smallest = (width < height) ? width : height; radius = (- radius * smallest); } @@ -809,9 +984,7 @@ void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord h void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -824,12 +997,113 @@ 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) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif +#ifdef __WXWINCE__ + DoDrawEllipticArcRot( x, y, w, h, sa, ea ); +#else + + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -870,13 +1144,12 @@ void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,d CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); +#endif } void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") ); @@ -892,9 +1165,7 @@ void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") ); @@ -907,6 +1178,15 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask HPALETTE oldPal = 0; #endif // wxUSE_PALETTE + if ( bmp.HasAlpha() ) + { + MemoryHDC hdcMem; + SelectInHDC select(hdcMem, GetHbitmapOf(bmp)); + + if ( AlphaBlt(GetHdc(), x, y, width, height, 0, 0, hdcMem, bmp) ) + return; + } + if ( useMask ) { wxMask *mask = bmp.GetMask(); @@ -917,7 +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 ) @@ -926,9 +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 @@ -965,7 +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); @@ -1018,9 +1299,7 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC DrawAnyText(text, x, y); @@ -1034,9 +1313,7 @@ void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // prepare for drawing the text if ( m_textForegroundColour.Ok() ) @@ -1051,11 +1328,19 @@ void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT : OPAQUE); +#ifdef __WXWINCE__ + if ( ::ExtTextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), 0, NULL, + text.c_str(), text.length(), NULL) == 0 ) + { + wxLogLastError(wxT("TextOut")); + } +#else if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), text.c_str(), text.length()) == 0 ) { wxLogLastError(wxT("TextOut")); } +#endif // restore the old parameters (text foreground colour may be left because // it never is set to anything else, but background should remain @@ -1070,9 +1355,7 @@ void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // we test that we have some font because otherwise we should still use the // "else" part below to avoid that DrawRotatedText(angle = 180) and @@ -1126,13 +1409,13 @@ void wxDC::DoDrawRotatedText(const wxString& text, // "upper left" and "upper right" CalcBoundingBox(x, y); - CalcBoundingBox(x + w*cos(rad), y - 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 + h*sin(rad), y + h*cos(rad)); + CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad))); } #endif } @@ -1145,9 +1428,7 @@ void wxDC::DoDrawRotatedText(const wxString& text, void wxDC::DoSelectPalette(bool realize) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. @@ -1161,7 +1442,7 @@ void wxDC::DoSelectPalette(bool realize) { HPALETTE oldPal = ::SelectPalette(GetHdc(), GetHpaletteOf(m_palette), - FALSE); + false); if (!m_oldPalette) m_oldPalette = (WXHPALETTE) oldPal; @@ -1175,7 +1456,7 @@ void wxDC::SetPalette(const wxPalette& palette) if ( palette.Ok() ) { m_palette = palette; - DoSelectPalette(TRUE); + DoSelectPalette(true); } } @@ -1200,176 +1481,155 @@ void wxDC::InitializePalette() #endif // wxUSE_PALETTE -void wxDC::SetFont(const wxFont& the_font) -{ -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif +// SetFont/Pen/Brush() really ask to be implemented as a single template +// function... but doing it is not worth breaking OpenWatcom build - // 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; - } +void wxDC::SetFont(const wxFont& font) +{ + WXMICROWIN_CHECK_HDC - 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; } } void wxDC::SetPen(const wxPen& pen) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif - - // 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; - } + WXMICROWIN_CHECK_HDC - m_pen = pen; + if ( pen == m_pen ) + return; - if (!m_pen.Ok()) + if ( pen.Ok() ) { - if (m_oldPen) - ::SelectObject(GetHdc(), (HPEN) m_oldPen); - m_oldPen = 0; - } + HGDIOBJ hpen = ::SelectObject(GetHdc(), GetHpenOf(pen)); + if ( hpen == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(pen)")); + } + else // selected ok + { + if ( !m_oldPen ) + m_oldPen = (WXHPEN)hpen; - if (m_pen.Ok()) + m_pen = pen; + } + } + else // invalid pen, reset the current pen { - if (m_pen.GetResourceHandle()) + if ( m_oldPen ) { - HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle()); - if (!m_oldPen) - m_oldPen = (WXHPEN) p; + if ( ::SelectObject(GetHdc(), (HPEN) m_oldPen) == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(old pen)")); + } + + m_oldPen = 0; } + + m_pen = wxNullPen; } } void wxDC::SetBrush(const wxBrush& brush) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif - - // 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; - } + WXMICROWIN_CHECK_HDC - 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()")); + } + } + + HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush)); + if ( hbrush == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(brush)")); } + else // selected ok + { + if ( !m_oldBrush ) + m_oldBrush = (WXHBRUSH)hbrush; - if ( m_brush.GetResourceHandle() ) + m_brush = brush; + } + } + else // invalid brush, reset the current brush + { + if ( m_oldBrush ) { - HBRUSH b = 0; - b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle()); - if (!m_oldBrush) - m_oldBrush = (WXHBRUSH) b; + 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) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_backgroundBrush = brush; - if (!m_backgroundBrush.Ok()) - return; - - if (m_canvas) + if ( m_backgroundBrush.Ok() ) { - 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)SetBkColor(GetHdc(), m_backgroundBrush.GetColour().GetPixel()); } } void wxDC::SetBackgroundMode(int mode) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_backgroundMode = mode; @@ -1379,9 +1639,7 @@ void wxDC::SetBackgroundMode(int mode) void wxDC::SetLogicalFunction(int function) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_logicalFunction = function; @@ -1424,8 +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() @@ -1446,9 +1704,7 @@ void wxDC::EndPage() wxCoord wxDC::GetCharHeight() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return 0; -#endif + WXMICROWIN_CHECK_HDC_RET(0) TEXTMETRIC lpTextMetric; @@ -1459,9 +1715,7 @@ wxCoord wxDC::GetCharHeight() const wxCoord wxDC::GetCharWidth() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return 0; -#endif + WXMICROWIN_CHECK_HDC_RET(0) TEXTMETRIC lpTextMetric; @@ -1498,10 +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; @@ -1518,11 +1804,54 @@ 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) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_mappingMode = mode; @@ -1544,8 +1873,8 @@ void wxDC::SetMapMode(int mode) return; } - double mm2pixelsX = pixel_width / mm_width, - mm2pixelsY = pixel_height / mm_height; + double mm2pixelsX = (double)pixel_width / mm_width, + mm2pixelsY = (double)pixel_height / mm_height; switch (mode) { @@ -1577,6 +1906,7 @@ void wxDC::SetMapMode(int mode) // VZ: it seems very wasteful to always use MM_ANISOTROPIC when in 99% of // cases we could do with MM_TEXT and in the remaining 0.9% with // MM_ISOTROPIC (TODO!) +#ifndef __WXWINCE__ ::SetMapMode(GetHdc(), MM_ANISOTROPIC); int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX, @@ -1587,13 +1917,12 @@ void wxDC::SetMapMode(int mode) ::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL); ::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL); +#endif } void wxDC::SetUserScale(double x, double y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC if ( x == m_userScaleX && y == m_userScaleY ) return; @@ -1601,15 +1930,15 @@ void wxDC::SetUserScale(double x, double y) m_userScaleX = x; m_userScaleY = y; - SetMapMode(m_mappingMode); + this->SetMapMode(m_mappingMode); } -void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) +void wxDC::SetAxisOrientation(bool WXUNUSED_IN_WINCE(xLeftRight), + bool WXUNUSED_IN_WINCE(yBottomUp)) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC +#ifndef __WXWINCE__ int signX = xLeftRight ? 1 : -1, signY = yBottomUp ? -1 : 1; @@ -1620,13 +1949,12 @@ void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) SetMapMode(m_mappingMode); } +#endif } void wxDC::SetSystemScale(double x, double y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC if ( x == m_scaleX && y == m_scaleY ) return; @@ -1634,14 +1962,14 @@ void wxDC::SetSystemScale(double x, double y) m_scaleX = x; m_scaleY = y; +#ifndef __WXWINCE__ SetMapMode(m_mappingMode); +#endif } void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC if ( x == m_logicalOriginX && y == m_logicalOriginY ) return; @@ -1649,14 +1977,14 @@ void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) m_logicalOriginX = x; m_logicalOriginY = y; +#ifndef __WXWINCE__ ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); +#endif } void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC if ( x == m_deviceOriginX && y == m_deviceOriginY ) return; @@ -1725,21 +2053,31 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, int rop, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return FALSE; -#endif + wxCHECK_MSG( source, false, _T("wxDC::Blit(): NULL wxDC pointer") ); + + 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() || + (m_selectedBitmap.Ok() && m_selectedBitmap.HasAlpha())) ) + { + if ( AlphaBlt(GetHdc(), xdest, ydest, width, height, + xsrc, ysrc, GetHdcOf(*source), bmpSrc) ) + return true; + } wxMask *mask = NULL; if ( useMask ) { - const wxBitmap& bmp = source->m_selectedBitmap; - mask = bmp.GetMask(); + mask = bmpSrc.GetMask(); - if ( !(bmp.Ok() && mask && mask->GetMaskBitmap()) ) + if ( !(bmpSrc.Ok() && mask && mask->GetMaskBitmap()) ) { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter - useMask = FALSE; + useMask = false; } } @@ -1759,7 +2097,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); } - DWORD dwRop = SRCCOPY; + DWORD dwRop; switch (rop) { case wxXOR: dwRop = SRCINVERT; break; @@ -1780,10 +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) { @@ -1794,16 +2132,22 @@ 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) #endif { - success = ::MaskBlt(GetHdc(), xdest, ydest, width, height, - GetHdcOf(*source), xsrc, ysrc, - (HBITMAP)mask->GetMaskBitmap(), xsrcMask, ysrcMask, - MAKEROP4(dwRop, DSTCOPY)) != 0; + success = ::MaskBlt + ( + GetHdc(), + xdest, ydest, width, height, + GetHdcOf(*source), + xsrc, ysrc, + (HBITMAP)mask->GetMaskBitmap(), + xsrcMask, ysrcMask, + MAKEROP4(dwRop, DSTCOPY) + ) != 0; } if ( !success ) @@ -1893,35 +2237,121 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } else // no mask, just BitBlt() it { - success = ::BitBlt(GetHdc(), xdest, ydest, - (int)width, (int)height, - GetHdcOf(*source), xsrc, ysrc, dwRop) != 0; + // if we already have a DIB, draw it using StretchDIBits(), otherwise + // use StretchBlt() if available and finally fall back to BitBlt() + + // FIXME: use appropriate WinCE functions +#ifndef __WXWINCE__ + const int caps = ::GetDeviceCaps(GetHdc(), RASTERCAPS); + if ( bmpSrc.Ok() && (caps & RC_STRETCHDIB) ) + { + DIBSECTION ds; + wxZeroMemory(ds); + + if ( ::GetObject(GetHbitmapOf(bmpSrc), + sizeof(ds), + &ds) == sizeof(ds) ) + { + StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR); + + // Figure out what co-ordinate system we're supposed to specify + // ysrc in. + const LONG hDIB = ds.dsBmih.biHeight; + if ( hDIB > 0 ) + { + // reflect ysrc + ysrc = hDIB - (ysrc + height); + } + + if ( ::StretchDIBits(GetHdc(), + xdest, ydest, + width, height, + xsrc, ysrc, + width, height, + ds.dsBm.bmBits, + (LPBITMAPINFO)&ds.dsBmih, + DIB_RGB_COLORS, + dwRop + ) == (int)GDI_ERROR ) + { + // 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; + } + } + } + + if ( !success && (caps & RC_STRETCHBLT) ) +#endif + // __WXWINCE__ + { +#ifndef __WXWINCE__ + StretchBltModeChanger changeMode(GetHdc(), COLORONCOLOR); +#endif + + if ( !::StretchBlt + ( + GetHdc(), + xdest, ydest, width, height, + GetHdcOf(*source), + xsrc, ysrc, width, height, + dwRop + ) ) + { + wxLogLastError(_T("StretchBlt")); + } + else + { + success = true; + } + } + if ( !success ) { - wxLogLastError(wxT("BitBlt")); + if ( !::BitBlt + ( + GetHdc(), + xdest, ydest, + (int)width, (int)height, + GetHdcOf(*source), + xsrc, ysrc, + dwRop + ) ) + { + wxLogLastError(_T("BitBlt")); + } + else + { + success = true; + } } } + ::SetTextColor(GetHdc(), old_textground); ::SetBkColor(GetHdc(), old_background); return success; } -void wxDC::DoGetSize(int *w, int *h) const +void wxDC::GetDeviceSize(int *width, int *height) const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + 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 { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // if we implement it in terms of DoGetSize() instead of directly using the // results returned by GetDeviceCaps(HORZ/VERTSIZE) as was done before, it @@ -1951,9 +2381,7 @@ void wxDC::DoGetSizeMM(int *w, int *h) const wxSize wxDC::GetPPI() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return wxSize(); -#endif + WXMICROWIN_CHECK_HDC_RET(wxSize(0,0)) int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); @@ -1961,35 +2389,18 @@ 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) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC 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 -{ -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif - - 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 +// ---------------------------------------------------------------------------- +// DC caching +// ---------------------------------------------------------------------------- #if wxUSE_DC_CACHEING @@ -2031,10 +2442,10 @@ wxDCCacheEntry::~wxDCCacheEntry() wxDCCacheEntry* wxDC::FindBitmapInCache(WXHDC dc, int w, int h) { int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL); - wxNode* node = sm_bitmapCache.First(); + wxList::compatibility_iterator node = sm_bitmapCache.GetFirst(); while (node) { - wxDCCacheEntry* entry = (wxDCCacheEntry*) node->Data(); + wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData(); if (entry->m_depth == depth) { @@ -2052,7 +2463,7 @@ wxDCCacheEntry* wxDC::FindBitmapInCache(WXHDC dc, int w, int h) return entry; } - node = node->Next(); + node = node->GetNext(); } WXHBITMAP hBitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h); if ( !hBitmap) @@ -2067,10 +2478,10 @@ wxDCCacheEntry* wxDC::FindBitmapInCache(WXHDC dc, int w, int h) wxDCCacheEntry* wxDC::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc) { int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL); - wxNode* node = sm_dcCache.First(); + wxList::compatibility_iterator node = sm_dcCache.GetFirst(); while (node) { - wxDCCacheEntry* entry = (wxDCCacheEntry*) node->Data(); + wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData(); // Don't return the same one as we already have if (!notThis || (notThis != entry)) @@ -2081,7 +2492,7 @@ wxDCCacheEntry* wxDC::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc) } } - node = node->Next(); + node = node->GetNext(); } WXHDC hDC = (WXHDC) ::CreateCompatibleDC((HDC) dc); if ( !hDC) @@ -2105,19 +2516,15 @@ void wxDC::AddToDCCache(wxDCCacheEntry* entry) void wxDC::ClearCache() { - sm_bitmapCache.DeleteContents(TRUE); - sm_bitmapCache.Clear(); - sm_bitmapCache.DeleteContents(FALSE); - sm_dcCache.DeleteContents(TRUE); - sm_dcCache.Clear(); - sm_dcCache.DeleteContents(FALSE); + WX_CLEAR_LIST(wxList, sm_dcCache); + WX_CLEAR_LIST(wxList, sm_bitmapCache); } // Clean up cache at app exit class wxDCModule : public wxModule { public: - virtual bool OnInit() { return TRUE; } + virtual bool OnInit() { return true; } virtual void OnExit() { wxDC::ClearCache(); } private: @@ -2126,6 +2533,233 @@ private: IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule) -#endif - // wxUSE_DC_CACHEING +#endif // wxUSE_DC_CACHEING +// ---------------------------------------------------------------------------- +// alpha channel support +// ---------------------------------------------------------------------------- + +static bool AlphaBlt(HDC hdcDst, + int x, int y, int width, int height, + int srcX, int srcY, HDC hdcSrc, + const wxBitmap& bmp) +{ + wxASSERT_MSG( bmp.Ok() && bmp.HasAlpha(), _T("AlphaBlt(): invalid bitmap") ); + wxASSERT_MSG( hdcDst && hdcSrc, _T("AlphaBlt(): invalid HDC") ); + + // do we have AlphaBlend() and company in the headers? +#if defined(AC_SRC_OVER) && wxUSE_DYNLIB_CLASS + // yes, now try to see if we have it during run-time + typedef BOOL (WINAPI *AlphaBlend_t)(HDC,int,int,int,int, + HDC,int,int,int,int, + BLENDFUNCTION); + + static AlphaBlend_t + pfnAlphaBlend = (AlphaBlend_t)wxMSIMG32DLL.GetSymbol(_T("AlphaBlend")); + if ( pfnAlphaBlend ) + { + BLENDFUNCTION bf; + bf.BlendOp = AC_SRC_OVER; + bf.BlendFlags = 0; + bf.SourceConstantAlpha = 0xff; + bf.AlphaFormat = AC_SRC_ALPHA; + + if ( pfnAlphaBlend(hdcDst, x, y, width, height, + hdcSrc, srcX, srcY, width, height, + bf) ) + { + // skip wxAlphaBlend() call below + 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, srcX, srcY, bmp); + + 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) + wxUnusedVar(bmp); + return false; +#endif // wxHAVE_RAW_BITMAP +} + + +// wxAlphaBlend: our fallback if ::AlphaBlend() is unavailable +#ifdef wxHAVE_RAW_BITMAP + +static void +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, xDst, yDst, SRCCOPY) ) + { + wxLogLastError(_T("BitBlt")); + } + + // combine them with the source bitmap using alpha + wxAlphaPixelData dataDst(bmpDst), + dataSrc((wxBitmap &)bmpSrc); + + wxCHECK_RET( dataDst && dataSrc, + _T("failed to get raw data in wxAlphaBlend") ); + + wxAlphaPixelData::Iterator pDst(dataDst), + pSrc(dataSrc); + + pSrc.Offset(dataSrc, srcX, srcY); + + for ( int y = 0; y < h; y++ ) + { + wxAlphaPixelData::Iterator pDstRowStart = pDst, + pSrcRowStart = pSrc; + + for ( int x = 0; x < w; x++ ) + { + // note that source bitmap uses premultiplied alpha (as required by + // the real AlphaBlend) + const unsigned beta = 255 - pSrc.Alpha(); + + pDst.Red() = pSrc.Red() + (beta * pDst.Red() + 127) / 255; + pDst.Blue() = pSrc.Blue() + (beta * pDst.Blue() + 127) / 255; + pDst.Green() = pSrc.Green() + (beta * pDst.Green() + 127) / 255; + + ++pDst; + ++pSrc; + } + + pDst = pDstRowStart; + pSrc = pSrcRowStart; + pDst.OffsetY(dataDst, 1); + pSrc.OffsetY(dataSrc, 1); + } + + // and finally blit them back to the destination DC + if ( !::BitBlt(hdcDst, xDst, yDst, w, h, hdcMem, 0, 0, SRCCOPY) ) + { + wxLogLastError(_T("BitBlt")); + } +} + +#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); +}