X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e12be2f7fb5f55553795b7c4168007173511d581..645f9bd3772a7a4ca3687553e1af53e5a0bb51c1:/src/msw/dc.cpp?ds=sidebyside diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp index 45c51e9417..4420abf53a 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" @@ -29,50 +25,94 @@ #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" #include "wx/dialog.h" #include "wx/app.h" #include "wx/bitmap.h" #include "wx/dcmemory.h" #include "wx/log.h" + #include "wx/math.h" #include "wx/icon.h" + #include "wx/dcprint.h" + #include "wx/module.h" #endif -#include "wx/dcprint.h" +#include "wx/msw/dc.h" +#include "wx/sysopt.h" +#include "wx/dynlib.h" + +#ifdef wxHAS_RAW_BITMAP + #include "wx/rawbmp.h" +#endif #include -#include -#if wxUSE_COMMON_DIALOGS -#if wxUSE_NORLANDER_HEADERS - #include +#include "wx/msw/private/dc.h" + +using namespace wxMSWImpl; + +#ifndef AC_SRC_ALPHA + #define AC_SRC_ALPHA 1 #endif - #include + +#ifndef LAYOUT_RTL + #define LAYOUT_RTL 1 #endif -#ifndef __WIN32__ - #include +/* Quaternary raster codes */ +#ifndef MAKEROP4 +#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore)) #endif -#include "wx/msw/private.h" +// 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, wxObject) +IMPLEMENT_ABSTRACT_CLASS(wxMSWDCImpl, wxDCImpl) // --------------------------------------------------------------------------- // constants // --------------------------------------------------------------------------- -static const int VIEWPORT_EXTENT = 1000; +// The device space in Win32 GDI measures 2^27*2^27 , so we use 2^27-1 as the +// maximal possible view port extent. +static const int VIEWPORT_EXTENT = 134217727; + +// 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 -static const int MM_POINTS = 9; -static const int MM_METRIC = 10; +// ---------------------------------------------------------------------------- +// macros for logical <-> device coords conversion +// ---------------------------------------------------------------------------- -// usually this is defined in math.h -#ifndef M_PI - static const double M_PI = 3.14159265358979323846; -#endif // M_PI +/* + We currently let Windows do all the translations itself so these macros are + not really needed (any more) but keep them to enhance readability of the + code by allowing to see where are the logical and where are the device + coordinates used. + */ + +#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 @@ -81,60 +121,338 @@ 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 dstWidth, int dstHeight, + int srcX, int srcY, + int srcWidth, int srcHeight, + HDC hdcSrc, + const wxBitmap& bmp); + +#ifdef wxHAS_RAW_BITMAP + +// our (limited) AlphaBlend() replacement for Windows versions not providing it +static void +wxAlphaBlend(HDC hdcDst, int xDst, int yDst, + int dstWidth, int dstHeight, + int srcX, int srcY, + int srcWidth, int srcHeight, + const wxBitmap& bmpSrc); + +#endif // wxHAS_RAW_BITMAP + +// ---------------------------------------------------------------------------- +// private classes +// ---------------------------------------------------------------------------- + +// instead of duplicating the same code which sets and then restores text +// colours in each wxDC method working with wxSTIPPLE_MASK_OPAQUE brushes, +// encapsulate this in a small helper class + +// wxBrushAttrsSetter: changes the text colours in the ctor if required and +// restores them in the dtor +class wxBrushAttrsSetter : private wxBkModeChanger, + private wxTextColoursChanger +{ +public: + wxBrushAttrsSetter(wxMSWDCImpl& dc); + +private: + wxDECLARE_NO_COPY_CLASS(wxBrushAttrsSetter); +}; + +#ifdef __WXWINCE__ + +#define SET_STRETCH_BLT_MODE(hdc) + +#else // !__WXWINCE__ + +// this class sets the stretch blit mode to COLORONCOLOR during its lifetime +// +// don't use it directly, use SET_STRETCH_BLT_MODE() macro instead as it +// expands to nothing under WinCE which doesn't have SetStretchBltMode() +class StretchBltModeChanger +{ +public: + StretchBltModeChanger(HDC hdc) + : m_hdc(hdc) + { + m_modeOld = ::SetStretchBltMode(m_hdc, COLORONCOLOR); + if ( !m_modeOld ) + { + wxLogLastError(wxT("SetStretchBltMode")); + } + } + + ~StretchBltModeChanger() + { + if ( !::SetStretchBltMode(m_hdc, m_modeOld) ) + { + wxLogLastError(wxT("SetStretchBltMode")); + } + } + +private: + const HDC m_hdc; + + int m_modeOld; + + wxDECLARE_NO_COPY_CLASS(StretchBltModeChanger); +}; + +#define SET_STRETCH_BLT_MODE(hdc) \ + StretchBltModeChanger wxMAKE_UNIQUE_NAME(stretchModeChanger)(hdc) + +#endif // __WXWINCE__/!__WXWINCE__ + +#if wxUSE_DYNLIB_CLASS + +// 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; + } + + void Unload() + { + if ( m_dll.IsLoaded() ) + { + m_dll.Unload(); + } + } + +private: + wxDynamicLibrary m_dll; + const wxChar *m_dllName; +}; + +static wxOnceOnlyDLLLoader wxMSIMG32DLL(wxT("msimg32")); + +// we must ensure that DLLs are unloaded before the static objects cleanup time +// because we may hit the notorious DllMain() dead lock in this case if wx is +// used as a DLL (attempting to unload another DLL from inside DllMain() hangs +// under Windows because it tries to reacquire the same lock) +class wxGDIDLLsCleanupModule : public wxModule +{ +public: + virtual bool OnInit() { return true; } + virtual void OnExit() { wxMSIMG32DLL.Unload(); } + +private: + DECLARE_DYNAMIC_CLASS(wxGDIDLLsCleanupModule) +}; + +IMPLEMENT_DYNAMIC_CLASS(wxGDIDLLsCleanupModule, wxModule) + +namespace +{ + +#if wxUSE_DC_TRANSFORM_MATRIX + +// Class used to dynamically load world transform related API functions. +class GdiWorldTransformFuncs +{ +public: + static bool IsOk() + { + if ( !ms_worldTransformSymbolsLoaded ) + LoadWorldTransformSymbols(); + + return ms_pfnSetGraphicsMode && + ms_pfnSetWorldTransform && + ms_pfnGetWorldTransform && + ms_pfnModifyWorldTransform; + } + + typedef int (WINAPI *SetGraphicsMode_t)(HDC, int); + static SetGraphicsMode_t SetGraphicsMode() + { + if ( !ms_worldTransformSymbolsLoaded ) + LoadWorldTransformSymbols(); + + return ms_pfnSetGraphicsMode; + } + + typedef BOOL (WINAPI *SetWorldTransform_t)(HDC, const XFORM *); + static SetWorldTransform_t SetWorldTransform() + { + if ( !ms_worldTransformSymbolsLoaded ) + LoadWorldTransformSymbols(); + + return ms_pfnSetWorldTransform; + } + + typedef BOOL (WINAPI *GetWorldTransform_t)(HDC, LPXFORM); + static GetWorldTransform_t GetWorldTransform() + { + if ( !ms_worldTransformSymbolsLoaded ) + LoadWorldTransformSymbols(); + + return ms_pfnGetWorldTransform; + } + + typedef BOOL (WINAPI *ModifyWorldTransform_t)(HDC, const XFORM *, DWORD); + static ModifyWorldTransform_t ModifyWorldTransform() + { + if ( !ms_worldTransformSymbolsLoaded ) + LoadWorldTransformSymbols(); + + return ms_pfnModifyWorldTransform; + } + +private: + static void LoadWorldTransformSymbols() + { + wxDynamicLibrary dll(wxT("gdi32.dll")); + + wxDL_INIT_FUNC(ms_pfn, SetGraphicsMode, dll); + wxDL_INIT_FUNC(ms_pfn, SetWorldTransform, dll); + wxDL_INIT_FUNC(ms_pfn, GetWorldTransform, dll); + wxDL_INIT_FUNC(ms_pfn, ModifyWorldTransform, dll); + + ms_worldTransformSymbolsLoaded = true; + } + + static SetGraphicsMode_t ms_pfnSetGraphicsMode; + static SetWorldTransform_t ms_pfnSetWorldTransform; + static GetWorldTransform_t ms_pfnGetWorldTransform; + static ModifyWorldTransform_t ms_pfnModifyWorldTransform; + + static bool ms_worldTransformSymbolsLoaded; +}; + +GdiWorldTransformFuncs::SetGraphicsMode_t + GdiWorldTransformFuncs::ms_pfnSetGraphicsMode = NULL; +GdiWorldTransformFuncs::SetWorldTransform_t + GdiWorldTransformFuncs::ms_pfnSetWorldTransform = NULL; +GdiWorldTransformFuncs::GetWorldTransform_t + GdiWorldTransformFuncs::ms_pfnGetWorldTransform = NULL; +GdiWorldTransformFuncs::ModifyWorldTransform_t + GdiWorldTransformFuncs::ms_pfnModifyWorldTransform = NULL; + +bool GdiWorldTransformFuncs::ms_worldTransformSymbolsLoaded = false; + +#endif // wxUSE_DC_TRANSFORM_MATRIX + +} // anonymous namespace + +#endif // wxUSE_DYNLIB_CLASS + // =========================================================================== // implementation // =========================================================================== -// --------------------------------------------------------------------------- -// wxDC -// --------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// wxBrushAttrsSetter +// ---------------------------------------------------------------------------- -// Default constructor -wxDC::wxDC() +wxBrushAttrsSetter::wxBrushAttrsSetter(wxMSWDCImpl& dc) + : wxBkModeChanger(GetHdcOf(dc)), + wxTextColoursChanger(GetHdcOf(dc)) { - m_canvas = NULL; - - m_oldBitmap = 0; - m_oldPen = 0; - m_oldBrush = 0; - m_oldFont = 0; - m_oldPalette = 0; + const wxBrush& brush = dc.GetBrush(); + if ( brush.IsOk() && brush.GetStyle() == wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE ) + { + // note that Windows convention is opposite to wxWidgets one, this is + // why text colour becomes the background one and vice versa + wxTextColoursChanger::Change(dc.GetTextBackground(), + dc.GetTextForeground()); - m_bOwnsDC = FALSE; - m_hDC = 0; + wxBkModeChanger::Change(dc.GetBackgroundMode()); + } +} - m_windowExtX = VIEWPORT_EXTENT; - m_windowExtY = VIEWPORT_EXTENT; +// ---------------------------------------------------------------------------- +// wxDC MSW-specific methods +// ---------------------------------------------------------------------------- - m_hDCCount = 0; +WXHDC wxDC::GetHDC() const +{ + wxMSWDCImpl * const impl = wxDynamicCast(GetImpl(), wxMSWDCImpl); + return impl ? impl->GetHDC() : 0; } +// --------------------------------------------------------------------------- +// wxMSWDCImpl +// --------------------------------------------------------------------------- + +wxMSWDCImpl::wxMSWDCImpl( wxDC *owner, WXHDC hDC ) : + wxDCImpl( owner ) +{ + Init(); + m_hDC = hDC; +} -wxDC::~wxDC() +wxMSWDCImpl::~wxMSWDCImpl() { - if ( m_hDC != 0 ) { + if ( m_hDC != 0 ) + { SelectOldObjects(m_hDC); - if ( m_bOwnsDC ) { - if ( m_canvas == NULL ) - ::DeleteDC(GetHdc()); + + // if we own the HDC, we delete it, otherwise we just release it + + if ( m_bOwnsDC ) + { + ::DeleteDC(GetHdc()); + } + else // we don't own our HDC + { + if (m_window) + { + ::ReleaseDC(GetHwndOf(m_window), GetHdc()); + } else - ::ReleaseDC((HWND)m_canvas->GetHWND(), GetHdc()); + { + // Must have been a wxScreenDC + ::ReleaseDC((HWND) NULL, GetHdc()); + } } } - } // This will select current objects out of the DC, // which is what you have to do before deleting the // DC. -void wxDC::SelectOldObjects(WXHDC dc) +void wxMSWDCImpl::SelectOldObjects(WXHDC dc) { if (dc) { if (m_oldBitmap) { ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap); - if (m_selectedBitmap.Ok()) + if (m_selectedBitmap.IsOk()) { m_selectedBitmap.SetSelectedInto(NULL); } @@ -155,16 +473,21 @@ void wxDC::SelectOldObjects(WXHDC dc) ::SelectObject((HDC) dc, (HFONT) m_oldFont); } m_oldFont = 0; + +#if wxUSE_PALETTE if (m_oldPalette) { - ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE); + ::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, FALSE); } m_oldPalette = 0; +#endif // wxUSE_PALETTE } m_brush = wxNullBrush; m_pen = wxNullPen; +#if wxUSE_PALETTE m_palette = wxNullPalette; +#endif // wxUSE_PALETTE m_font = wxNullFont; m_backgroundBrush = wxNullBrush; m_selectedBitmap = wxNullBitmap; @@ -174,78 +497,163 @@ void wxDC::SelectOldObjects(WXHDC dc) // clipping // --------------------------------------------------------------------------- -void wxDC::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch) +void wxMSWDCImpl::UpdateClipBox() { - m_clipping = TRUE; - m_clipX1 = (int)cx; - m_clipY1 = (int)cy; - m_clipX2 = (int)(cx + cw); - m_clipY2 = (int)(cy + ch); + WXMICROWIN_CHECK_HDC + + RECT rect; + ::GetClipBox(GetHdc(), &rect); - DoClipping((WXHDC) m_hDC); + m_clipX1 = (wxCoord) XDEV2LOG(rect.left); + m_clipY1 = (wxCoord) YDEV2LOG(rect.top); + m_clipX2 = (wxCoord) XDEV2LOG(rect.right); + m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom); } -void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) +void +wxMSWDCImpl::DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const { - wxCHECK_RET( region.GetHRGN(), wxT("invalid clipping region") ); + // 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 ) + { + wxMSWDCImpl *self = wxConstCast(this, wxMSWDCImpl); + self->UpdateClipBox(); - wxRect box = region.GetBox(); + if ( !m_clipX1 && !m_clipX2 ) + self->m_clipping = false; + } - m_clipping = TRUE; - m_clipX1 = box.x; - m_clipY1 = box.y; - m_clipX2 = box.x + box.width; - m_clipY2 = box.y + box.height; + wxDCImpl::DoGetClippingBox(x, y, w, h); +} -#ifdef __WIN16__ - SelectClipRgn(GetHdc(), (HRGN) region.GetHRGN()); -#else - ExtSelectClipRgn(GetHdc(), (HRGN) region.GetHRGN(), RGN_AND); -#endif +// common part of DoSetClippingRegion() and DoSetDeviceClippingRegion() +void wxMSWDCImpl::SetClippingHrgn(WXHRGN hrgn) +{ + wxCHECK_RET( hrgn, wxT("invalid clipping region") ); + + 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) +#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); + + if ( ::CombineRgn(hrgnDest, hrgnClipOld, (HRGN)hrgn, RGN_AND) != ERROR ) + { + ::SelectClipRgn(GetHdc(), hrgnDest); + } + + ::DeleteObject(hrgnClipOld); + ::DeleteObject(hrgnDest); +#else // !WinCE + if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR ) + { + wxLogLastError(wxT("ExtSelectClipRgn")); + + return; + } +#endif // WinCE/!WinCE + + m_clipping = true; + + UpdateClipBox(); } -void wxDC::DoClipping(WXHDC dc) +void wxMSWDCImpl::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h) { - if (m_clipping && dc) + // the region coords are always the device ones, so do the translation + // manually + // + // FIXME: possible +/-1 error here, to check! + HRGN hrgn = ::CreateRectRgn(LogicalToDeviceX(x), + LogicalToDeviceY(y), + LogicalToDeviceX(x + w), + LogicalToDeviceY(y + h)); + if ( !hrgn ) + { + wxLogLastError(wxT("CreateRectRgn")); + } + else { - IntersectClipRect((HDC) dc, XLOG2DEV(m_clipX1), YLOG2DEV(m_clipY1), - XLOG2DEV(m_clipX2), YLOG2DEV(m_clipY2)); + SetClippingHrgn((WXHRGN)hrgn); + + ::DeleteObject(hrgn); } } -void wxDC::DestroyClippingRegion() +void wxMSWDCImpl::DoSetDeviceClippingRegion(const wxRegion& region) +{ + SetClippingHrgn(region.GetHRGN()); +} + +void wxMSWDCImpl::DestroyClippingRegion() { + 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 DestroyClippingRegion. + // so that OnPaint processing works correctly, and the update + // clipping region doesn't get destroyed after the first + // DestroyClippingRegion. HRGN rgn = CreateRectRgn(0, 0, 32000, 32000); - SelectClipRgn(GetHdc(), rgn); - DeleteObject(rgn); + ::SelectClipRgn(GetHdc(), rgn); + ::DeleteObject(rgn); +#endif } - m_clipping = FALSE; + + wxDCImpl::DestroyClippingRegion(); } // --------------------------------------------------------------------------- // query capabilities // --------------------------------------------------------------------------- -bool wxDC::CanDrawBitmap() const +bool wxMSWDCImpl::CanDrawBitmap() const { - return TRUE; + return true; } -bool wxDC::CanGetTextExtent() const +bool wxMSWDCImpl::CanGetTextExtent() const { +#ifdef __WXMICROWIN__ + // TODO Extend MicroWindows' GetDeviceCaps function + return true; +#else // What sort of display is it? int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY); return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER); +#endif } -int wxDC::GetDepth() const +int wxMSWDCImpl::GetDepth() const { + WXMICROWIN_CHECK_HDC_RET(16) + return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL); } @@ -253,110 +661,145 @@ int wxDC::GetDepth() const // drawing // --------------------------------------------------------------------------- -void wxDC::Clear() +void wxMSWDCImpl::Clear() { + WXMICROWIN_CHECK_HDC + RECT rect; - if ( m_canvas ) + if (m_window) { - GetClientRect((HWND) m_canvas->GetHWND(), &rect); + GetClientRect((HWND) m_window->GetHWND(), &rect); } else { - wxCHECK_RET( m_selectedBitmap.Ok(), wxT("this DC can't be cleared") ); - - rect.left = 0; rect.top = 0; - rect.right = m_selectedBitmap.GetWidth(); - rect.bottom = m_selectedBitmap.GetHeight(); + // No, I think we should simply ignore this if printing on e.g. + // a printer DC. + // wxCHECK_RET( m_selectedBitmap.IsOk(), wxT("this DC can't be cleared") ); + if (!m_selectedBitmap.IsOk()) + return; + + 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); + DWORD colour = ::GetBkColor(GetHdc()); + HBRUSH brush = ::CreateSolidBrush(colour); + ::FillRect(GetHdc(), &rect, brush); + ::DeleteObject(brush); - ::SetMapMode(GetHdc(), MM_ANISOTROPIC); - ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); - ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); - ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); - ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); + RealizeScaleAndOrigin(); } -void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) +bool wxMSWDCImpl::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x), + wxCoord WXUNUSED_IN_WINCE(y), + const wxColour& WXUNUSED_IN_WINCE(col), + wxFloodFillStyle WXUNUSED_IN_WINCE(style)) { - (void)ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), - col.GetPixel(), - style == wxFLOOD_SURFACE ? FLOODFILLSURFACE - : FLOODFILLBORDER); +#ifdef __WXWINCE__ + return false; +#else + WXMICROWIN_CHECK_HDC_RET(false) + + bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), + col.GetPixel(), + style == wxFLOOD_SURFACE ? FLOODFILLSURFACE + : FLOODFILLBORDER) ) ; + if (!success) + { + // quoting from the MSDN docs: + // + // Following are some of the reasons this function might fail: + // + // * The filling could not be completed. + // * The specified point has the boundary color specified by the + // crColor parameter (if FLOODFILLBORDER was requested). + // * The specified point does not have the color specified by + // crColor (if FLOODFILLSURFACE was requested) + // * The point is outside the clipping region that is, it is not + // visible on the device. + // + wxLogLastError(wxT("ExtFloodFill")); + } CalcBoundingBox(x, y); + + return success; +#endif } -bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const +bool wxMSWDCImpl::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const { - // added by steve 29.12.94 (copied from DrawPoint) - // returns TRUE for pixels in the color of the current pen - // and FALSE for all other pixels colors - // if col is non-NULL return the color of the pixel + WXMICROWIN_CHECK_HDC_RET(false) + + wxCHECK_MSG( col, false, wxT("NULL colour parameter in wxMSWDCImpl::GetPixel") ); // get the color of the pixel COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)); - // get the color of the pen - COLORREF pencolor = 0x00ffffff; - if (m_pen.Ok()) - { - pencolor = m_pen.GetColour().GetPixel(); - } - // return the color of the pixel - if(col) - col->Set(GetRValue(pixelcolor),GetGValue(pixelcolor),GetBValue(pixelcolor)); + wxRGBToColour(*col, pixelcolor); - // check, if color of the pixels is the same as the color - // of the current pen - return(pixelcolor==pencolor); + return true; } -void wxDC::DoCrossHair(wxCoord x, wxCoord y) +void wxMSWDCImpl::DoCrossHair(wxCoord x, wxCoord y) { + 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); } -void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) +void wxMSWDCImpl::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) { - (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL); - (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2)); + WXMICROWIN_CHECK_HDC - /* MATTHEW: [6] New normalization */ -#if WX_STANDARD_GRAPHICS - (void)LineTo(GetHdc(), XLOG2DEV(x2) + 1, YLOG2DEV(y2)); -#endif + wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2)); CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); } -void wxDC::DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2, wxCoord xc, wxCoord yc) +// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1) +// and ending at (x2, y2) +void wxMSWDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord xc, wxCoord yc) { - double dx = xc-x1; - double dy = yc-y1; - double radius = (double)sqrt(dx*dx+dy*dy) ;; - if (x1==x2 && x2==y2) + double dx = xc - x1; + double dy = yc - y1; + wxCoord r = (wxCoord)sqrt(dx*dx + dy*dy); + + +#ifdef __WXWINCE__ + // Slower emulation since WinCE doesn't support Pie and Arc + 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 + + wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling + + // treat the special case of full circle separately + if ( x1 == x2 && y1 == y2 ) { - DrawEllipse(xc,yc,(wxCoord)(radius*2.0),(wxCoord)(radius*2.0)); + GetOwner()->DrawEllipse(xc - r, yc - r, 2*r, 2*r); return; } @@ -366,35 +809,67 @@ void wxDC::DoDrawArc(wxCoord x1,wxCoord y1,wxCoord x2,wxCoord y2, wxCoord xc, wx wxCoord yy2 = YLOG2DEV(y2); wxCoord xxc = XLOG2DEV(xc); wxCoord yyc = YLOG2DEV(yc); - wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1))); + dx = xxc - xx1; + dy = yyc - yy1; + wxCoord ray = (wxCoord)sqrt(dx*dx + dy*dy); - (void)MoveToEx(GetHdc(), (int) xx1, (int) yy1, NULL); wxCoord xxx1 = (wxCoord) (xxc-ray); wxCoord yyy1 = (wxCoord) (yyc-ray); wxCoord xxx2 = (wxCoord) (xxc+ray); wxCoord yyy2 = (wxCoord) (yyc+ray); - if (m_brush.Ok() && m_brush.GetStyle() !=wxTRANSPARENT) + + if ( m_brush.IsNonTransparent() ) { // Have to add 1 to bottom-right corner of rectangle // to make semi-circles look right (crooked line otherwise). // Unfortunately this is not a reliable method, depends // on the size of shape. // TODO: figure out why this happens! - Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, - xx1,yy1,xx2,yy2); + Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2); } else - Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, - xx1,yy1,xx2,yy2); + { + Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2); + } + + CalcBoundingBox(xc - r, yc - r); + CalcBoundingBox(xc + r, yc + r); +#endif +} + +void wxMSWDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1, + wxCoord width, wxCoord height) +{ + // 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; + + RECT rect; + rect.left = x1; + rect.top = y1; + rect.right = x2; + rect.bottom = y2; + +#ifdef __WXWINCE__ + DrawFrameControl(GetHdc(), &rect, DFC_BUTTON, DFCS_BUTTONCHECK | DFCS_CHECKED); +#else + DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK); +#endif - CalcBoundingBox((wxCoord)(xc-radius), (wxCoord)(yc-radius)); - CalcBoundingBox((wxCoord)(xc+radius), (wxCoord)(yc+radius)); + CalcBoundingBox(x1, y1); + CalcBoundingBox(x2, y2); +#endif // Microwin/Normal } -void wxDC::DoDrawPoint(wxCoord x, wxCoord y) +void wxMSWDCImpl::DoDrawPoint(wxCoord x, wxCoord y) { + WXMICROWIN_CHECK_HDC + COLORREF color = 0x00ffffff; - if (m_pen.Ok()) + if (m_pen.IsOk()) { color = m_pen.GetColour().GetPixel(); } @@ -404,8 +879,16 @@ void wxDC::DoDrawPoint(wxCoord x, wxCoord y) CalcBoundingBox(x, y); } -void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle) +void wxMSWDCImpl::DoDrawPolygon(int n, + wxPoint points[], + wxCoord xoffset, + wxCoord yoffset, + wxPolygonFillMode WXUNUSED_IN_WINCE(fillStyle)) { + WXMICROWIN_CHECK_HDC + + wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling + // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) { @@ -418,9 +901,13 @@ 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 @@ -429,14 +916,75 @@ 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 +wxMSWDCImpl::DoDrawPolyPolygon(int n, + int count[], + wxPoint points[], + wxCoord xoffset, + wxCoord yoffset, + wxPolygonFillMode fillStyle) +{ +#ifdef __WXWINCE__ + wxDCImpl::DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); +#else + WXMICROWIN_CHECK_HDC + + wxBrushAttrsSetter 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) +void wxMSWDCImpl::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) { @@ -462,68 +1010,62 @@ void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset } } -void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) +void wxMSWDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { + WXMICROWIN_CHECK_HDC + + wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling + wxCoord x2 = x + width; wxCoord y2 = y + height; - /* MATTHEW: [6] new normalization */ -#if WX_STANDARD_GRAPHICS - bool do_brush, do_pen; + wxCoord x2dev = XLOG2DEV(x2), + y2dev = YLOG2DEV(y2); - do_brush = m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT; - do_pen = m_pen.Ok() && m_pen.GetStyle() != wxTRANSPARENT; + // Windows (but not Windows CE) draws the filled rectangles without outline + // (i.e. drawn with a transparent pen) one pixel smaller in both directions + // and we want them to have the same size regardless of which pen is used +#ifndef __WXWINCE__ + if ( m_pen.IsTransparent() ) + { + x2dev++; + y2dev++; + } +#endif // !__WXWINCE__ - if (do_brush) { - HPEN orig_pen = NULL; + (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), x2dev, y2dev); - if (do_pen || !m_pen.Ok()) - orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN)); + CalcBoundingBox(x, y); + CalcBoundingBox(x2, y2); +} - (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), - XLOG2DEV(x2) + 1, YLOG2DEV(y2) + 1); +void wxMSWDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) +{ + WXMICROWIN_CHECK_HDC - if (do_pen || !m_pen.Ok()) - ::SelectObject(GetHdc() , orig_pen); - } - if (do_pen) { - HBRUSH orig_brush = NULL; + wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling - if (do_brush || !m_brush.Ok()) - orig_brush = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH) ::GetStockObject(NULL_BRUSH)); - - (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), - XLOG2DEV(x2), YLOG2DEV(y2)); - - if (do_brush || !m_brush.Ok()) - ::SelectObject(GetHdc(), orig_brush); - } -#else - (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); -#endif - - CalcBoundingBox(x, y); - CalcBoundingBox(x2, y2); -} - -void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) -{ - // Now, a negative radius value is interpreted to mean - // 'the proportion of the smallest X or Y dimension' + // Now, a negative radius value is interpreted to mean + // 'the proportion of the smallest X or Y dimension' if (radius < 0.0) { - double smallest = 0.0; - if (width < height) - smallest = width; - else - smallest = height; + double smallest = (width < height) ? width : height; radius = (- radius * smallest); } wxCoord x2 = (x+width); wxCoord y2 = (y+height); + // Windows draws the filled rectangles without outline (i.e. drawn with a + // transparent pen) one pixel smaller in both directions and we want them + // to have the same size regardless of which pen is used - adjust + if ( m_pen.IsTransparent() ) + { + x2++; + y2++; + } + (void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius))); @@ -531,22 +1073,133 @@ void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord h CalcBoundingBox(x2, y2); } -void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) +void wxMSWDCImpl::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { - wxCoord x2 = (x+width); - wxCoord y2 = (y+height); + WXMICROWIN_CHECK_HDC + + wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling - (void)Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); + // +1 below makes the ellipse more similar to other platforms. + // In particular, DoDrawEllipse(x,y,1,1) should draw one point. + wxCoord x2 = x + width + 1; + wxCoord y2 = y + height + 1; + + // Problem: Windows GDI Ellipse() with x2-x == y2-y == 3 and transparent + // pen doesn't draw anything. Should we provide a workaround? + + ::Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2)); CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); } +#if wxUSE_SPLINES && !defined(__WXWINCE__) +void wxMSWDCImpl::DoDrawSpline(const wxPointList *points) +{ + // 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; + + wxPointList::compatibility_iterator node = points->GetFirst(); + wxPoint *p = 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 = 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_STD_CONTAINERS + while ((node = node->GetNext()) != NULL) +#else + while ((node = node->GetNext())) +#endif // !wxUSE_STD_CONTAINERS + { + 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 // wxUSE_SPLINES + // 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) +void wxMSWDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) { - wxCoord x2 = (x+w); - wxCoord y2 = (y+h); +#ifdef __WXWINCE__ + DoDrawEllipticArcRot( x, y, w, h, sa, ea ); +#else + + WXMICROWIN_CHECK_HDC + + wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling + + wxCoord x2 = x + w; + wxCoord y2 = y + h; int rx1 = XLOG2DEV(x+w/2); int ry1 = YLOG2DEV(y+h/2); @@ -561,48 +1214,157 @@ void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,d rx2 += (int)(100.0 * abs(w) * cos(ea)); ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea)); + // Swap start and end positions if the end angle is less than the start angle. + if (ea < sa) { + int temp; + temp = rx2; + rx2 = rx1; + rx1 = temp; + temp = ry2; + ry2 = ry1; + ry1 = temp; + } + // draw pie with NULL_PEN first and then outline otherwise a line is // drawn from the start and end points to the centre - HPEN orig_pen = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN)); + HPEN hpenOld = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN)); if (m_signY > 0) { (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1, - rx1, ry1, rx2, ry2); + rx1, ry1, rx2, ry2); } else { (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2), - rx1, ry1-1, rx2, ry2-1); + rx1, ry1-1, rx2, ry2-1); } - ::SelectObject(GetHdc(), orig_pen); + + ::SelectObject(GetHdc(), hpenOld); + (void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2), - rx1, ry1, rx2, ry2); + rx1, ry1, rx2, ry2); CalcBoundingBox(x, y); CalcBoundingBox(x2, y2); +#endif } -void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) +void wxMSWDCImpl::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) { -#if defined(__WIN32__) && !defined(__SC__) && !defined(__TWIN32__) - ::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON(), - icon.GetWidth(), icon.GetHeight(), 0, 0, DI_NORMAL); + WXMICROWIN_CHECK_HDC + + wxCHECK_RET( icon.IsOk(), wxT("invalid icon in DrawIcon") ); + +#ifdef __WIN32__ + ::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon), icon.GetWidth(), icon.GetHeight(), 0, NULL, DI_NORMAL); #else - ::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), (HICON) icon.GetHICON()); + ::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon)); #endif CalcBoundingBox(x, y); - CalcBoundingBox(x+icon.GetWidth(), y+icon.GetHeight()); + CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight()); } -void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ) +void wxMSWDCImpl::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ) { - if (!bmp.Ok()) - return; + WXMICROWIN_CHECK_HDC + + wxCHECK_RET( bmp.IsOk(), wxT("invalid bitmap in wxMSWDCImpl::DrawBitmap") ); + + int width = bmp.GetWidth(), + height = bmp.GetHeight(); + + HBITMAP hbmpMask = 0; + +#if wxUSE_PALETTE + HPALETTE oldPal = 0; +#endif // wxUSE_PALETTE - // If we're not drawing transparently, and not drawing to a printer, - // optimize this function to use Windows functions. - if (!useMask && !IsKindOf(CLASSINFO(wxPrinterDC))) + if ( bmp.HasAlpha() ) + { + MemoryHDC hdcMem; + SelectInHDC select(hdcMem, GetHbitmapOf(bmp)); + + if ( AlphaBlt(GetHdc(), x, y, width, height, 0, 0, width, height, hdcMem, bmp) ) + return; + } + + SET_STRETCH_BLT_MODE(GetHdc()); + + if ( useMask ) + { + wxMask *mask = bmp.GetMask(); + if ( mask ) + hbmpMask = (HBITMAP)mask->GetMaskBitmap(); + + if ( !hbmpMask ) + { + // don't give assert here because this would break existing + // programs - just silently ignore useMask parameter + useMask = false; + } + } + if ( useMask ) + { +#ifdef __WIN32__ + // use MaskBlt() with ROP which doesn't do anything to dst in the mask + // points + bool ok = false; + +#if wxUSE_SYSTEM_OPTIONS + // On some systems, MaskBlt succeeds yet is much much slower + // than the wxWidgets fall-back implementation. So we need + // to be able to switch this on and off at runtime. + // + // NB: don't query the value of the option every time but do it only + // once as otherwise it can have real (and bad) performance + // implications (see #11172) + static bool + s_maskBltAllowed = wxSystemOptions::GetOptionInt("no-maskblt") == 0; + if ( s_maskBltAllowed ) +#endif // wxUSE_SYSTEM_OPTIONS + { + HDC cdc = GetHdc(); + HDC hdcMem = ::CreateCompatibleDC(GetHdc()); + HGDIOBJ hOldBitmap = ::SelectObject(hdcMem, GetHbitmapOf(bmp)); +#if wxUSE_PALETTE + wxPalette *pal = bmp.GetPalette(); + if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 ) + { + oldPal = ::SelectPalette(hdcMem, GetHpaletteOf(*pal), FALSE); + ::RealizePalette(hdcMem); + } +#endif // wxUSE_PALETTE + + ok = ::MaskBlt(cdc, x, y, width, height, + hdcMem, 0, 0, + hbmpMask, 0, 0, + MAKEROP4(SRCCOPY, DSTCOPY)) != 0; + +#if wxUSE_PALETTE + if (oldPal) + ::SelectPalette(hdcMem, oldPal, FALSE); +#endif // wxUSE_PALETTE + + ::SelectObject(hdcMem, hOldBitmap); + ::DeleteDC(hdcMem); + } + + if ( !ok ) +#endif // Win32 + { + // Rather than reproduce wxMSWDCImpl::Blit, let's do it at the wxWin API + // level + wxMemoryDC memDC; + + memDC.SelectObjectAsSource(bmp); + + GetOwner()->Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask); + + memDC.SelectObject(wxNullBitmap); + } + } + else // no mask, just use BitBlt() { HDC cdc = GetHdc(); HDC memdc = ::CreateCompatibleDC( cdc ); @@ -610,96 +1372,98 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") ); - ::SelectObject( memdc, hbitmap ); - ::BitBlt( cdc, x, y, bmp.GetWidth(), bmp.GetHeight(), memdc, 0, 0, SRCCOPY); - ::DeleteDC( memdc ); - } - else - { - // Rather than reproduce wxDC::Blit, let's do it at the wxWin API level - wxMemoryDC memDC; - memDC.SelectObject(bmp); + wxTextColoursChanger textCol(GetHdc(), *this); + +#if wxUSE_PALETTE + wxPalette *pal = bmp.GetPalette(); + if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 ) + { + oldPal = ::SelectPalette(memdc, GetHpaletteOf(*pal), FALSE); + ::RealizePalette(memdc); + } +#endif // wxUSE_PALETTE - /* Not sure if we need this. The mask should leave the - * masked areas as per the original background of this DC. - */ - /* - // There might be transparent areas, so make these - // the same colour as this DC - memDC.SetBackground(* GetBackground()); - memDC.Clear(); - */ + HGDIOBJ hOldBitmap = ::SelectObject( memdc, hbitmap ); + ::BitBlt( cdc, x, y, width, height, memdc, 0, 0, SRCCOPY); - Blit(x, y, bmp.GetWidth(), bmp.GetHeight(), & memDC, 0, 0, wxCOPY, useMask); +#if wxUSE_PALETTE + if (oldPal) + ::SelectPalette(memdc, oldPal, FALSE); +#endif // wxUSE_PALETTE - memDC.SelectObject(wxNullBitmap); + ::SelectObject( memdc, hOldBitmap ); + ::DeleteDC( memdc ); } } -void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) +void wxMSWDCImpl::DoDrawText(const wxString& text, wxCoord x, wxCoord y) { + // For compatibility with other ports (notably wxGTK) and because it's + // genuinely useful, we allow passing multiline strings to DrawText(). + // However there is no native MSW function to draw them directly so we + // instead reuse the generic DrawLabel() method to render them. Of course, + // DrawLabel() itself will call back to us but with single line strings + // only so there won't be any infinite recursion here. + if ( text.find('\n') != wxString::npos ) + { + GetOwner()->DrawLabel(text, wxRect(x, y, 0, 0)); + return; + } + + WXMICROWIN_CHECK_HDC + DrawAnyText(text, x, y); // update the bounding box CalcBoundingBox(x, y); wxCoord w, h; - GetTextExtent(text, &w, &h); + GetOwner()->GetTextExtent(text, &w, &h); CalcBoundingBox(x + w, y + h); } -void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) +void wxMSWDCImpl::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) { - // prepare for drawing the text - if ( m_textForegroundColour.Ok() ) - SetTextColor(GetHdc(), m_textForegroundColour.GetPixel()); + WXMICROWIN_CHECK_HDC - DWORD old_background = 0; - if ( m_textBackgroundColour.Ok() ) - { - old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); - } + // prepare for drawing the text + wxTextColoursChanger textCol(GetHdc(), *this); - SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT - : OPAQUE); + wxBkModeChanger bkMode(GetHdc(), m_backgroundMode); - if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), - text.c_str(), text.length()) == 0 ) + if ( ::ExtTextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), 0, NULL, + text.c_str(), text.length(), NULL) == 0 ) { - wxLogLastError("TextOut"); + wxLogLastError(wxT("TextOut")); } - - // restore the old parameters (text foreground colour may be left because - // it never is set to anything else, but background should remain - // transparent even if we just drew an opaque string) - if ( m_textBackgroundColour.Ok() ) - (void)SetBkColor(GetHdc(), old_background); - - SetBkMode(GetHdc(), TRANSPARENT); } -void wxDC::DoDrawRotatedText(const wxString& text, +void wxMSWDCImpl::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) { + 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 // DrawRotatedText(angle = 0) use different fonts (we can't use the default // font for drawing rotated fonts unfortunately) - if ( (angle == 0.0) && m_font.Ok() ) + if ( (angle == 0.0) && m_font.IsOk() ) { DoDrawText(text, x, y); } +#ifndef __WXMICROWIN__ else { - // NB: don't take DEFAULT_GUI_FONT because it's not TrueType and so - // can't have non zero orientation/escapement - wxFont font = m_font.Ok() ? m_font : *wxNORMAL_FONT; + // NB: don't take DEFAULT_GUI_FONT (a.k.a. wxSYS_DEFAULT_GUI_FONT) + // because it's not TrueType and so can't have non zero + // orientation/escapement under Win9x + wxFont font = m_font.IsOk() ? m_font : *wxSWISS_FONT; HFONT hfont = (HFONT)font.GetResourceHandle(); LOGFONT lf; if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 ) { - wxLogLastError("GetObject(hfont)"); + wxLogLastError(wxT("GetObject(hfont)")); } // GDI wants the angle in tenth of degree @@ -710,7 +1474,7 @@ void wxDC::DoDrawRotatedText(const wxString& text, hfont = ::CreateFontIndirect(&lf); if ( !hfont ) { - wxLogLastError("CreateFont"); + wxLogLastError(wxT("CreateFont")); } else { @@ -719,267 +1483,311 @@ void wxDC::DoDrawRotatedText(const wxString& text, DrawAnyText(text, x, y); (void)::SelectObject(GetHdc(), hfontOld); + (void)::DeleteObject(hfont); } // call the bounding box by adding all four vertices of the rectangle // containing the text to it (simpler and probably not slower than // determining which of them is really topmost/leftmost/...) wxCoord w, h; - GetTextExtent(text, &w, &h); + GetOwner()->GetTextExtent(text, &w, &h); double rad = DegToRad(angle); // "upper left" and "upper right" CalcBoundingBox(x, y); - CalcBoundingBox(x + w*cos(rad), y - h*sin(rad)); + 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 } // --------------------------------------------------------------------------- // set GDI objects // --------------------------------------------------------------------------- -void wxDC::SetPalette(const wxPalette& palette) +#if wxUSE_PALETTE + +void wxMSWDCImpl::DoSelectPalette(bool realize) { + WXMICROWIN_CHECK_HDC + // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldPalette) { - ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); + ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, FALSE); m_oldPalette = 0; } - m_palette = palette; - - if (!m_palette.Ok()) + if ( m_palette.IsOk() ) { - // Setting a NULL colourmap is a way of restoring - // the original colourmap - if (m_oldPalette) - { - ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); - m_oldPalette = 0; - } - - return; - } - - if (m_palette.Ok() && m_palette.GetHPALETTE()) - { - HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), TRUE); + HPALETTE oldPal = ::SelectPalette(GetHdc(), + GetHpaletteOf(m_palette), + false); if (!m_oldPalette) m_oldPalette = (WXHPALETTE) oldPal; - ::RealizePalette(GetHdc()); + if (realize) + ::RealizePalette(GetHdc()); } } -void wxDC::SetFont(const wxFont& the_font) +void wxMSWDCImpl::SetPalette(const wxPalette& palette) { - // Set the old object temporarily, in case the assignment deletes an object - // that's not yet selected out. - if (m_oldFont) + if ( palette.IsOk() ) { - ::SelectObject(GetHdc(), (HFONT) m_oldFont); - m_oldFont = 0; + m_palette = palette; + DoSelectPalette(true); } +} - m_font = the_font; - - if (!the_font.Ok()) +void wxMSWDCImpl::InitializePalette() +{ + if ( wxDisplayDepth() <= 8 ) { - if (m_oldFont) - ::SelectObject(GetHdc(), (HFONT) m_oldFont); - m_oldFont = 0; - } + // look for any window or parent that has a custom palette. If any has + // one then we need to use it in drawing operations + wxWindow *win = m_window->GetAncestorWithCustomPalette(); - if (m_font.Ok() && m_font.GetResourceHandle()) - { - HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle()); - if (f == (HFONT) NULL) + m_hasCustomPalette = win && win->HasCustomPalette(); + if ( m_hasCustomPalette ) { - wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont.")); + m_palette = win->GetPalette(); + + // turn on MSW translation for this palette + DoSelectPalette(); } - if (!m_oldFont) - m_oldFont = (WXHFONT) f; } } -void wxDC::SetPen(const wxPen& pen) +#endif // wxUSE_PALETTE + +// SetFont/Pen/Brush() really ask to be implemented as a single template +// function... but doing it is not worth breaking OpenWatcom build + +void wxMSWDCImpl::SetFont(const wxFont& font) { - // 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 ( font == m_font ) + return; - if (!m_pen.Ok()) + if ( font.IsOk() ) { - if (m_oldPen) - ::SelectObject(GetHdc(), (HPEN) m_oldPen); - m_oldPen = 0; - } + HGDIOBJ hfont = ::SelectObject(GetHdc(), GetHfontOf(font)); + if ( hfont == HGDI_ERROR ) + { + wxLogLastError(wxT("SelectObject(font)")); + } + else // selected ok + { + if ( !m_oldFont ) + m_oldFont = (WXHFONT)hfont; - if (m_pen.Ok()) + m_font = font; + } + } + else // invalid font, reset the current font { - if (m_pen.GetResourceHandle()) + if ( m_oldFont ) { - HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle()); - if (!m_oldPen) - m_oldPen = (WXHPEN) p; + if ( ::SelectObject(GetHdc(), (HPEN) m_oldFont) == HGDI_ERROR ) + { + wxLogLastError(wxT("SelectObject(old font)")); + } + + m_oldFont = 0; } + + m_font = wxNullFont; } } -void wxDC::SetBrush(const wxBrush& brush) +void wxMSWDCImpl::SetPen(const wxPen& pen) { - // 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 ( pen == m_pen ) + return; - if (!m_brush.Ok()) + if ( pen.IsOk() ) { - if (m_oldBrush) - ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); - m_oldBrush = 0; - } + HGDIOBJ hpen = ::SelectObject(GetHdc(), GetHpenOf(pen)); + if ( hpen == HGDI_ERROR ) + { + wxLogLastError(wxT("SelectObject(pen)")); + } + else // selected ok + { + if ( !m_oldPen ) + m_oldPen = (WXHPEN)hpen; - if (m_brush.Ok()) + m_pen = pen; + } + } + else // invalid pen, reset the current pen { - if (m_brush.GetResourceHandle()) + if ( m_oldPen ) { - HBRUSH b = 0; - b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle()); - if (!m_oldBrush) - m_oldBrush = (WXHBRUSH) b; + if ( ::SelectObject(GetHdc(), (HPEN) m_oldPen) == HGDI_ERROR ) + { + wxLogLastError(wxT("SelectObject(old pen)")); + } + + m_oldPen = 0; } + + m_pen = wxNullPen; } } -void wxDC::SetBackground(const wxBrush& brush) +void wxMSWDCImpl::SetBrush(const wxBrush& brush) { - m_backgroundBrush = brush; + WXMICROWIN_CHECK_HDC - if (!m_backgroundBrush.Ok()) + if ( brush == m_brush ) return; - if (m_canvas) + if ( brush.IsOk() ) { - 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) + // we must make sure the brush is aligned with the logical coordinates + // before selecting it or using the same brush for the background of + // different windows would result in discontinuities + wxSize sizeBrushBitmap = wxDefaultSize; + wxBitmap *stipple = brush.GetStipple(); + if ( stipple && stipple->IsOk() ) + sizeBrushBitmap = stipple->GetSize(); + else if ( brush.IsHatch() ) + sizeBrushBitmap = wxSize(8, 8); + + if ( sizeBrushBitmap.IsFullySpecified() ) { - if (m_backgroundBrush.GetStyle()==wxTRANSPARENT) + if ( !::SetBrushOrgEx + ( + GetHdc(), + m_deviceOriginX % sizeBrushBitmap.x, + m_deviceOriginY % sizeBrushBitmap.y, + NULL // [out] previous brush origin + ) ) { - m_canvas->SetTransparent(TRUE); + wxLogLastError(wxT("SetBrushOrgEx()")); } - else + } + + HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush)); + if ( hbrush == HGDI_ERROR ) + { + wxLogLastError(wxT("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 ) { - // 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); + wxLogLastError(wxT("SelectObject(old brush)")); } + + m_oldBrush = 0; } + + m_brush = wxNullBrush; } - COLORREF new_color = m_backgroundBrush.GetColour().GetPixel(); +} + +void wxMSWDCImpl::SetBackground(const wxBrush& brush) +{ + WXMICROWIN_CHECK_HDC + + m_backgroundBrush = brush; + + if ( m_backgroundBrush.IsOk() ) { - (void)SetBkColor(GetHdc(), new_color); + (void)SetBkColor(GetHdc(), m_backgroundBrush.GetColour().GetPixel()); } } -void wxDC::SetBackgroundMode(int mode) +void wxMSWDCImpl::SetBackgroundMode(int mode) { + WXMICROWIN_CHECK_HDC + m_backgroundMode = mode; // SetBackgroundColour now only refers to text background // and m_backgroundMode is used there - -/* - if (m_backgroundMode == wxTRANSPARENT) - ::SetBkMode(GetHdc(), TRANSPARENT); - else - ::SetBkMode(GetHdc(), OPAQUE); -*/ } -void wxDC::SetLogicalFunction(int function) +void wxMSWDCImpl::SetLogicalFunction(wxRasterOperationMode function) { + WXMICROWIN_CHECK_HDC + m_logicalFunction = function; - SetRop((WXHDC) m_hDC); + SetRop(m_hDC); } -void wxDC::SetRop(WXHDC dc) +void wxMSWDCImpl::SetRop(WXHDC dc) { - if (!dc || m_logicalFunction < 0) + if ( !dc || m_logicalFunction < 0 ) return; - int c_rop; - // These may be wrong + int rop; + switch (m_logicalFunction) { - // case wxXOR: c_rop = R2_XORPEN; break; - case wxXOR: c_rop = R2_NOTXORPEN; break; - case wxINVERT: c_rop = R2_NOT; break; - case wxOR_REVERSE: c_rop = R2_MERGEPENNOT; break; - case wxAND_REVERSE: c_rop = R2_MASKPENNOT; break; - case wxCLEAR: c_rop = R2_WHITE; break; - case wxSET: c_rop = R2_BLACK; break; - case wxSRC_INVERT: c_rop = R2_NOTCOPYPEN; break; - case wxOR_INVERT: c_rop = R2_MERGENOTPEN; break; - case wxAND: c_rop = R2_MASKPEN; break; - case wxOR: c_rop = R2_MERGEPEN; break; - case wxAND_INVERT: c_rop = R2_MASKNOTPEN; break; - case wxEQUIV: - case wxNAND: - case wxCOPY: - default: - c_rop = R2_COPYPEN; break; + case wxCLEAR: rop = R2_BLACK; break; + case wxXOR: rop = R2_XORPEN; break; + case wxINVERT: rop = R2_NOT; break; + case wxOR_REVERSE: rop = R2_MERGEPENNOT; break; + case wxAND_REVERSE: rop = R2_MASKPENNOT; break; + case wxCOPY: rop = R2_COPYPEN; break; + case wxAND: rop = R2_MASKPEN; break; + case wxAND_INVERT: rop = R2_MASKNOTPEN; break; + case wxNO_OP: rop = R2_NOP; break; + case wxNOR: rop = R2_NOTMERGEPEN; break; + case wxEQUIV: rop = R2_NOTXORPEN; break; + case wxSRC_INVERT: rop = R2_NOTCOPYPEN; break; + case wxOR_INVERT: rop = R2_MERGENOTPEN; break; + case wxNAND: rop = R2_NOTMASKPEN; break; + case wxOR: rop = R2_MERGEPEN; break; + case wxSET: rop = R2_WHITE; break; + default: + wxFAIL_MSG( wxS("unknown logical function") ); + return; } - SetROP2((HDC) dc, c_rop); + + SetROP2(GetHdc(), rop); } -bool wxDC::StartDoc(const wxString& message) +bool wxMSWDCImpl::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() +void wxMSWDCImpl::EndDoc() { } -void wxDC::StartPage() +void wxMSWDCImpl::StartPage() { } -void wxDC::EndPage() +void wxMSWDCImpl::EndPage() { } @@ -987,659 +1795,1156 @@ void wxDC::EndPage() // text metrics // --------------------------------------------------------------------------- -wxCoord wxDC::GetCharHeight() const +wxCoord wxMSWDCImpl::GetCharHeight() const { + WXMICROWIN_CHECK_HDC_RET(0) + TEXTMETRIC lpTextMetric; GetTextMetrics(GetHdc(), &lpTextMetric); - return YDEV2LOGREL(lpTextMetric.tmHeight); + return lpTextMetric.tmHeight; } -wxCoord wxDC::GetCharWidth() const +wxCoord wxMSWDCImpl::GetCharWidth() const { + WXMICROWIN_CHECK_HDC_RET(0) + TEXTMETRIC lpTextMetric; GetTextMetrics(GetHdc(), &lpTextMetric); - return XDEV2LOGREL(lpTextMetric.tmAveCharWidth); + return lpTextMetric.tmAveCharWidth; } -void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, - wxCoord *descent, wxCoord *externalLeading, - wxFont *theFont) const +void wxMSWDCImpl::DoGetFontMetrics(int *height, + int *ascent, + int *descent, + int *internalLeading, + int *externalLeading, + int *averageWidth) const { - wxFont *fontToUse = (wxFont*) theFont; - if (!fontToUse) - fontToUse = (wxFont*) &m_font; - - SIZE sizeRect; TEXTMETRIC tm; - GetTextExtentPoint(GetHdc(), WXSTRINGCAST string, wxStrlen(WXSTRINGCAST string), &sizeRect); GetTextMetrics(GetHdc(), &tm); - if (x) *x = XDEV2LOGREL(sizeRect.cx); - if (y) *y = YDEV2LOGREL(sizeRect.cy); - if (descent) *descent = tm.tmDescent; - if (externalLeading) *externalLeading = tm.tmExternalLeading; -} - -void wxDC::SetMapMode(int mode) + if ( height ) + *height = tm.tmHeight; + if ( ascent ) + *ascent = tm.tmAscent; + if ( descent ) + *descent = tm.tmDescent; + if ( internalLeading ) + *internalLeading = tm.tmInternalLeading; + if ( externalLeading ) + *externalLeading = tm.tmExternalLeading; + if ( averageWidth ) + *averageWidth = tm.tmAveCharWidth; +} + +void wxMSWDCImpl::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, + wxCoord *descent, wxCoord *externalLeading, + const wxFont *font) const { - m_mappingMode = mode; - - int pixel_width = 0; - int pixel_height = 0; - int mm_width = 0; - int mm_height = 0; +#ifdef __WXMICROWIN__ + if (!GetHDC()) + { + if (x) *x = 0; + if (y) *y = 0; + if (descent) *descent = 0; + if (externalLeading) *externalLeading = 0; + return; + } +#endif // __WXMICROWIN__ - pixel_width = GetDeviceCaps(GetHdc(), HORZRES); - pixel_height = GetDeviceCaps(GetHdc(), VERTRES); - mm_width = GetDeviceCaps(GetHdc(), HORZSIZE); - mm_height = GetDeviceCaps(GetHdc(), VERTSIZE); + HFONT hfontOld; + if ( font ) + { + wxASSERT_MSG( font->IsOk(), wxT("invalid font in wxMSWDCImpl::GetTextExtent") ); - if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0)) + hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font)); + } + else // don't change the font { - return; + hfontOld = 0; } - double mm2pixelsX = pixel_width/mm_width; - double mm2pixelsY = pixel_height/mm_height; + SIZE sizeRect; + const size_t len = string.length(); + if ( !::GetTextExtentPoint32(GetHdc(), string.wx_str(), len, &sizeRect) ) + { + wxLogLastError(wxT("GetTextExtentPoint32()")); + } - switch (mode) +#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 ) { - case wxMM_TWIPS: - { - m_logicalScaleX = (twips2mm * mm2pixelsX); - m_logicalScaleY = (twips2mm * mm2pixelsY); - break; - } - case wxMM_POINTS: - { - m_logicalScaleX = (pt2mm * mm2pixelsX); - m_logicalScaleY = (pt2mm * mm2pixelsY); - break; - } - case wxMM_METRIC: - { - m_logicalScaleX = mm2pixelsX; - m_logicalScaleY = mm2pixelsY; - break; - } - case wxMM_LOMETRIC: - { - m_logicalScaleX = (mm2pixelsX/10.0); - m_logicalScaleY = (mm2pixelsY/10.0); - break; - } - default: - case wxMM_TEXT: + ABC width; + const wxChar chFirst = *string.begin(); + if ( ::GetCharABCWidths(GetHdc(), chFirst, chFirst, &width) ) { - m_logicalScaleX = 1.0; - m_logicalScaleY = 1.0; - break; + 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) - if (::GetMapMode(GetHdc()) != MM_ANISOTROPIC) - ::SetMapMode(GetHdc(), MM_ANISOTROPIC); + if (x) + *x = sizeRect.cx; + if (y) + *y = sizeRect.cy; - SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); - m_windowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT); - m_windowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT); - ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); - ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); - ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); + if ( descent || externalLeading ) + { + DoGetFontMetrics(NULL, NULL, descent, NULL, externalLeading, NULL); + } + + if ( hfontOld ) + { + ::SelectObject(GetHdc(), hfontOld); + } } -void wxDC::SetUserScale(double x, double y) + +// Each element of the array will be the width of the string up to and +// including the coresoponding character in text. + +bool wxMSWDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const { - m_userScaleX = x; - m_userScaleY = y; + 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; + } - SetMapMode(m_mappingMode); + 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::SetAxisOrientation(bool xLeftRight, bool yBottomUp) +namespace { - m_signX = xLeftRight ? 1 : -1; - m_signY = yBottomUp ? -1 : 1; - SetMapMode(m_mappingMode); +void ApplyEffectiveScale(double scale, int sign, int *device, int *logical) +{ + // To reduce rounding errors as much as possible, we try to use the largest + // possible extent (2^27-1) for the device space but we must also avoid + // overflowing the int range i.e. ensure that logical extents are less than + // 2^31 in magnitude. So the minimal scale we can use is 1/16 as for + // anything smaller VIEWPORT_EXTENT/scale would overflow the int range. + static const double MIN_LOGICAL_SCALE = 1./16; + + double physExtent = VIEWPORT_EXTENT; + if ( scale < MIN_LOGICAL_SCALE ) + { + physExtent *= scale/MIN_LOGICAL_SCALE; + scale = MIN_LOGICAL_SCALE; + } + + *device = wxRound(physExtent); + *logical = sign*wxRound(VIEWPORT_EXTENT/scale); } -void wxDC::SetSystemScale(double x, double y) +} // anonymous namespace + +void wxMSWDCImpl::RealizeScaleAndOrigin() { - m_scaleX = x; - m_scaleY = y; + // although it may seem wasteful to always use MM_ANISOTROPIC here instead + // of using MM_TEXT if there is no scaling, benchmarking doesn't detect any + // noticeable difference between these mapping modes +#ifndef __WXWINCE__ + ::SetMapMode(GetHdc(), MM_ANISOTROPIC); + + // wxWidgets API assumes that the coordinate space is "infinite" (i.e. only + // limited by 2^32 range of the integer coordinates) but in MSW API we must + // actually specify the extents that we use so compute them here. - SetMapMode(m_mappingMode); + int devExtX, devExtY, // Viewport, i.e. device space, extents. + logExtX, logExtY; // Window, i.e. logical coordinate space, extents. + + ApplyEffectiveScale(m_scaleX, m_signX, &devExtX, &logExtX); + ApplyEffectiveScale(m_scaleY, m_signY, &devExtY, &logExtY); + + ::SetViewportExtEx(GetHdc(), devExtX, devExtY, NULL); + ::SetWindowExtEx(GetHdc(), logExtX, logExtY, NULL); + + ::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL); + ::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL); +#endif } -void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) +void wxMSWDCImpl::SetMapMode(wxMappingMode mode) { - m_logicalOriginX = x; - m_logicalOriginY = y; + WXMICROWIN_CHECK_HDC + + m_mappingMode = mode; + + if ( mode == wxMM_TEXT ) + { + m_logicalScaleX = + m_logicalScaleY = 1.0; + } + else // need to do some calculations + { + int pixel_width = ::GetDeviceCaps(GetHdc(), HORZRES), + pixel_height = ::GetDeviceCaps(GetHdc(), VERTRES), + mm_width = ::GetDeviceCaps(GetHdc(), HORZSIZE), + mm_height = ::GetDeviceCaps(GetHdc(), VERTSIZE); + + if ( (mm_width == 0) || (mm_height == 0) ) + { + // we can't calculate mm2pixels[XY] then! + return; + } + + double mm2pixelsX = (double)pixel_width / mm_width, + mm2pixelsY = (double)pixel_height / mm_height; + + switch (mode) + { + case wxMM_TWIPS: + m_logicalScaleX = twips2mm * mm2pixelsX; + m_logicalScaleY = twips2mm * mm2pixelsY; + break; + + case wxMM_POINTS: + m_logicalScaleX = pt2mm * mm2pixelsX; + m_logicalScaleY = pt2mm * mm2pixelsY; + break; + + case wxMM_METRIC: + m_logicalScaleX = mm2pixelsX; + m_logicalScaleY = mm2pixelsY; + break; + + case wxMM_LOMETRIC: + m_logicalScaleX = mm2pixelsX / 10.0; + m_logicalScaleY = mm2pixelsY / 10.0; + break; + + default: + wxFAIL_MSG( wxT("unknown mapping mode in SetMapMode") ); + } + } - ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); + ComputeScaleAndOrigin(); + + RealizeScaleAndOrigin(); } -void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) +void wxMSWDCImpl::SetUserScale(double x, double y) { - m_deviceOriginX = x; - m_deviceOriginY = y; + WXMICROWIN_CHECK_HDC - ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); -} + if ( x == m_userScaleX && y == m_userScaleY ) + return; -// --------------------------------------------------------------------------- -// coordinates transformations -// --------------------------------------------------------------------------- + wxDCImpl::SetUserScale(x,y); -wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const + RealizeScaleAndOrigin(); +} + +void wxMSWDCImpl::SetAxisOrientation(bool xLeftRight, + bool yBottomUp) { - return (wxCoord) (((x) - m_deviceOriginX)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX) - m_logicalOriginX); + WXMICROWIN_CHECK_HDC + + int signX = xLeftRight ? 1 : -1, + signY = yBottomUp ? -1 : 1; + + if (signX == m_signX && signY == m_signY) + return; + + wxDCImpl::SetAxisOrientation( xLeftRight, yBottomUp ); + + RealizeScaleAndOrigin(); } -wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const +void wxMSWDCImpl::SetLogicalOrigin(wxCoord x, wxCoord y) { - return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX)); + WXMICROWIN_CHECK_HDC + + if ( x == m_logicalOriginX && y == m_logicalOriginY ) + return; + + wxDCImpl::SetLogicalOrigin( x, y ); + + RealizeScaleAndOrigin(); } -wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const +// For use by wxWidgets only, unless custom units are required. +void wxMSWDCImpl::SetLogicalScale(double x, double y) { - return (wxCoord) (((y) - m_deviceOriginY)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY) - m_logicalOriginY); + WXMICROWIN_CHECK_HDC + + wxDCImpl::SetLogicalScale(x,y); } -wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const +void wxMSWDCImpl::SetDeviceOrigin(wxCoord x, wxCoord y) { - return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY)); + WXMICROWIN_CHECK_HDC + + if ( x == m_deviceOriginX && y == m_deviceOriginY ) + return; + + wxDCImpl::SetDeviceOrigin( x, y ); + + ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); } -wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const +// ---------------------------------------------------------------------------- +// Transform matrix +// ---------------------------------------------------------------------------- + +#if wxUSE_DC_TRANSFORM_MATRIX + +bool wxMSWDCImpl::CanUseTransformMatrix() const { - return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX); + return GdiWorldTransformFuncs::IsOk(); } -wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const +bool wxMSWDCImpl::SetTransformMatrix(const wxAffineMatrix2D &matrix) { - return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX); + if ( !GdiWorldTransformFuncs::IsOk() ) + return false; + + if ( matrix.IsIdentity() ) + { + ResetTransformMatrix(); + return true; + } + + if ( !GdiWorldTransformFuncs::SetGraphicsMode()(GetHdc(), GM_ADVANCED) ) + { + wxLogLastError(wxT("SetGraphicsMode")); + return false; + } + + wxMatrix2D mat; + wxPoint2DDouble tr; + matrix.Get(&mat, &tr); + + XFORM xform; + xform.eM11 = mat.m_11; + xform.eM12 = mat.m_12; + xform.eM21 = mat.m_21; + xform.eM22 = mat.m_22; + xform.eDx = tr.m_x; + xform.eDy = tr.m_y; + + if ( !GdiWorldTransformFuncs::SetWorldTransform()(GetHdc(), &xform) ) + { + wxLogLastError(wxT("SetWorldTransform")); + return false; + } + + return true; } -wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const +wxAffineMatrix2D wxMSWDCImpl::GetTransformMatrix() const { - return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY); + wxAffineMatrix2D transform; + + if ( !GdiWorldTransformFuncs::IsOk() ) + return transform; + + XFORM xform; + if ( !GdiWorldTransformFuncs::GetWorldTransform()(GetHdc(), &xform) ) + { + wxLogLastError(wxT("GetWorldTransform")); + return transform; + } + + wxMatrix2D m(xform.eM11, xform.eM12, xform.eM21, xform.eM22); + wxPoint2DDouble p(xform.eDx, xform.eDy); + transform.Set(m, p); + + return transform; } -wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const +void wxMSWDCImpl::ResetTransformMatrix() { - return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY); + if ( GdiWorldTransformFuncs::IsOk() ) + { + GdiWorldTransformFuncs::ModifyWorldTransform()(GetHdc(), NULL, MWT_IDENTITY); + GdiWorldTransformFuncs::SetGraphicsMode()(GetHdc(), GM_COMPATIBLE); + } } +#endif // wxUSE_DC_TRANSFORM_MATRIX + // --------------------------------------------------------------------------- // bit blit // --------------------------------------------------------------------------- -bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, - wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop, bool useMask) -{ - wxCoord xdest1 = xdest; - wxCoord ydest1 = ydest; - wxCoord xsrc1 = xsrc; - wxCoord ysrc1 = ysrc; - - // Chris Breeze 18/5/98: use text foreground/background colours - // when blitting from 1-bit bitmaps - COLORREF old_textground = ::GetTextColor(GetHdc()); - COLORREF old_background = ::GetBkColor(GetHdc()); - if (m_textForegroundColour.Ok()) - { - ::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() ); - } - if (m_textBackgroundColour.Ok()) - { - ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); - } - - DWORD dwRop = rop == wxCOPY ? SRCCOPY : - rop == wxCLEAR ? WHITENESS : - rop == wxSET ? BLACKNESS : - rop == wxINVERT ? DSTINVERT : - rop == wxAND ? MERGECOPY : - rop == wxOR ? MERGEPAINT : - rop == wxSRC_INVERT ? NOTSRCCOPY : - rop == wxXOR ? SRCINVERT : - rop == wxOR_REVERSE ? MERGEPAINT : - rop == wxAND_REVERSE ? SRCERASE : - rop == wxSRC_OR ? SRCPAINT : - rop == wxSRC_AND ? SRCAND : - SRCCOPY; - - bool success = TRUE; - if (useMask && source->m_selectedBitmap.Ok() && source->m_selectedBitmap.GetMask()) - { - -#if 0 // __WIN32__ - // Not implemented under Win95 (or maybe a specific device?) - if (MaskBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, - (HDC) source->m_hDC, xsrc1, ysrc1, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap(), - 0, 0, 0xAACC0020)) + +bool wxMSWDCImpl::DoBlit(wxCoord dstX, wxCoord dstY, + wxCoord dstWidth, wxCoord dstHeight, + wxDC *source, + wxCoord srcX, wxCoord srcY, + wxRasterOperationMode rop, bool useMask, + wxCoord srcMaskX, wxCoord srcMaskY) +{ + return DoStretchBlit(dstX, dstY, dstWidth, dstHeight, source, srcX, srcY, dstWidth, dstHeight, rop, useMask, srcMaskX, srcMaskY); +} + +bool wxMSWDCImpl::DoStretchBlit(wxCoord xdest, wxCoord ydest, + wxCoord dstWidth, wxCoord dstHeight, + wxDC *source, + wxCoord xsrc, wxCoord ysrc, + wxCoord srcWidth, wxCoord srcHeight, + wxRasterOperationMode rop, bool useMask, + wxCoord xsrcMask, wxCoord ysrcMask) +{ + wxCHECK_MSG( source, false, wxT("wxMSWDCImpl::Blit(): NULL wxDC pointer") ); + + WXMICROWIN_CHECK_HDC_RET(false) + + wxMSWDCImpl *implSrc = wxDynamicCast( source->GetImpl(), wxMSWDCImpl ); + if ( !implSrc ) + { + // TODO: Do we want to be able to blit from other DCs too? + return false; + } + + const HDC hdcSrc = GetHdcOf(*implSrc); + + // if either the source or destination has alpha channel, we must use + // AlphaBlt() as other function don't handle it correctly + const wxBitmap& bmpSrc = implSrc->GetSelectedBitmap(); + if ( bmpSrc.IsOk() && (bmpSrc.HasAlpha() || + (m_selectedBitmap.IsOk() && m_selectedBitmap.HasAlpha())) ) + { + if ( AlphaBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight, + xsrc, ysrc, srcWidth, srcHeight, hdcSrc, bmpSrc) ) + return true; + } + + wxMask *mask = NULL; + if ( useMask ) + { + mask = bmpSrc.GetMask(); + + if ( !(bmpSrc.IsOk() && mask && mask->GetMaskBitmap()) ) { - // Success + // don't give assert here because this would break existing + // programs - just silently ignore useMask parameter + useMask = false; } - else + } + + if (xsrcMask == -1 && ysrcMask == -1) + { + xsrcMask = xsrc; ysrcMask = ysrc; + } + + wxTextColoursChanger textCol(GetHdc(), *this); + + DWORD dwRop; + switch (rop) + { + case wxXOR: dwRop = SRCINVERT; break; + case wxINVERT: dwRop = DSTINVERT; break; + case wxOR_REVERSE: dwRop = 0x00DD0228; break; + case wxAND_REVERSE: dwRop = SRCERASE; break; + case wxCLEAR: dwRop = BLACKNESS; break; + case wxSET: dwRop = WHITENESS; break; + case wxOR_INVERT: dwRop = MERGEPAINT; break; + case wxAND: dwRop = SRCAND; break; + case wxOR: dwRop = SRCPAINT; break; + case wxEQUIV: dwRop = 0x00990066; break; + case wxNAND: dwRop = 0x007700E6; break; + case wxAND_INVERT: dwRop = 0x00220326; break; + case wxCOPY: dwRop = SRCCOPY; break; + case wxNO_OP: dwRop = DSTCOPY; break; + case wxSRC_INVERT: dwRop = NOTSRCCOPY; break; + case wxNOR: dwRop = NOTSRCCOPY; break; + default: + wxFAIL_MSG( wxT("unsupported logical function") ); + return false; + } + + bool success = false; + + if (useMask) + { +#ifdef __WIN32__ + // we want the part of the image corresponding to the mask to be + // transparent, so use "DSTCOPY" ROP for the mask points (the usual + // meaning of fg and bg is inverted which corresponds to wxWin notion + // of the mask which is also contrary to the Windows one) + + // On some systems, MaskBlt succeeds yet is much much slower + // 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 { - // New code from Chris Breeze, 15/7/98 + if ( dstWidth == srcWidth && dstHeight == srcHeight ) + { + success = ::MaskBlt + ( + GetHdc(), + xdest, ydest, dstWidth, dstHeight, + hdcSrc, + xsrc, ysrc, + (HBITMAP)mask->GetMaskBitmap(), + xsrcMask, ysrcMask, + MAKEROP4(dwRop, DSTCOPY) + ) != 0; + } + } + + if ( !success ) +#endif // Win32 + { // Blit bitmap with mask + HDC dc_mask ; + HDC dc_buffer ; + HBITMAP buffer_bmap ; + +#if wxUSE_DC_CACHEING + // create a temp buffer bitmap and DCs to access it and the mask + wxDCCacheEntry* dcCacheEntry1 = FindDCInCache(NULL, hdcSrc); + dc_mask = (HDC) dcCacheEntry1->m_dc; + + wxDCCacheEntry* dcCacheEntry2 = FindDCInCache(dcCacheEntry1, GetHDC()); + dc_buffer = (HDC) dcCacheEntry2->m_dc; + + wxDCCacheEntry* bitmapCacheEntry = FindBitmapInCache(GetHDC(), + dstWidth, dstHeight); + + buffer_bmap = (HBITMAP) bitmapCacheEntry->m_bitmap; +#else // !wxUSE_DC_CACHEING + // create a temp buffer bitmap and DCs to access it and the mask + dc_mask = ::CreateCompatibleDC(hdcSrc); + dc_buffer = ::CreateCompatibleDC(GetHdc()); + buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), dstWidth, dstHeight); +#endif // wxUSE_DC_CACHEING/!wxUSE_DC_CACHEING + HGDIOBJ hOldMaskBitmap = ::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap()); + HGDIOBJ hOldBufferBitmap = ::SelectObject(dc_buffer, buffer_bmap); + + // copy dest to buffer + if ( !::BitBlt(dc_buffer, 0, 0, dstWidth, dstHeight, + GetHdc(), xdest, ydest, SRCCOPY) ) + { + wxLogLastError(wxT("BitBlt")); + } + + SET_STRETCH_BLT_MODE(GetHdc()); - if (IsKindOf(CLASSINFO(wxPrinterDC))) + // copy src to buffer using selected raster op + if ( !::StretchBlt(dc_buffer, 0, 0, dstWidth, dstHeight, + hdcSrc, xsrc, ysrc, srcWidth, srcHeight, dwRop) ) { - // If we are printing source colours are screen colours - // not printer colours and so we need copy the bitmap - // pixel by pixel. - RECT rect; - HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC); - HDC dc_src = (HDC) source->m_hDC; - - ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap()); - for (int x = 0; x < width; x++) - { - for (int y = 0; y < height; y++) - { - COLORREF cref = ::GetPixel(dc_mask, x, y); - if (cref) - { - HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y)); - rect.left = xdest1 + x; rect.right = rect.left + 1; - rect.top = ydest1 + y; rect.bottom = rect.top + 1; - ::FillRect(GetHdc(), &rect, brush); - ::DeleteObject(brush); - } - } - } - ::SelectObject(dc_mask, 0); - ::DeleteDC(dc_mask); + wxLogLastError(wxT("StretchBlt")); } - else + + // set masked area in buffer to BLACK { - // create a temp buffer bitmap and DCs to access it and the mask - HDC dc_mask = ::CreateCompatibleDC((HDC) source->m_hDC); - HDC dc_buffer = ::CreateCompatibleDC(GetHdc()); - HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height); - ::SelectObject(dc_mask, (HBITMAP) source->m_selectedBitmap.GetMask()->GetMaskBitmap()); - ::SelectObject(dc_buffer, buffer_bmap); - - // copy dest to buffer - ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, - GetHdc(), xdest1, ydest1, SRCCOPY); - - // copy src to buffer using selected raster op - ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, - (HDC) source->m_hDC, xsrc1, ysrc1, dwRop); - - // set masked area in buffer to BLACK (pixel value 0) - COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255)); - COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0)); - ::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, - dc_mask, xsrc1, ysrc1, SRCAND); + wxTextColoursChanger textCol2(GetHdc(), *wxBLACK, *wxWHITE); + if ( !::StretchBlt(dc_buffer, 0, 0, dstWidth, dstHeight, + dc_mask, xsrcMask, ysrcMask, + srcWidth, srcHeight, SRCAND) ) + { + wxLogLastError(wxT("StretchBlt")); + } // set unmasked area in dest to BLACK ::SetBkColor(GetHdc(), RGB(0, 0, 0)); ::SetTextColor(GetHdc(), RGB(255, 255, 255)); - ::BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, - dc_mask, xsrc1, ysrc1, SRCAND); - ::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values - ::SetTextColor(GetHdc(), prevCol); + if ( !::StretchBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight, + dc_mask, xsrcMask, ysrcMask, + srcWidth, srcHeight, SRCAND) ) + { + wxLogLastError(wxT("StretchBlt")); + } + } // restore the original text and background colours - // OR buffer to dest - success = (::BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, - dc_buffer, 0, 0, SRCPAINT) != 0); + // OR buffer to dest + success = ::BitBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight, + dc_buffer, 0, 0, SRCPAINT) != 0; + if ( !success ) + { + wxLogLastError(wxT("BitBlt")); + } + + // tidy up temporary DCs and bitmap + ::SelectObject(dc_mask, hOldMaskBitmap); + ::SelectObject(dc_buffer, hOldBufferBitmap); - // tidy up temporary DCs and bitmap - ::SelectObject(dc_mask, 0); +#if !wxUSE_DC_CACHEING + { ::DeleteDC(dc_mask); - ::SelectObject(dc_buffer, 0); ::DeleteDC(dc_buffer); ::DeleteObject(buffer_bmap); } +#endif } } - else + else // no mask, just BitBlt() it { - // If we are printing, source colours are screen colours - // not printer colours and so we need copy the bitmap - // pixel by pixel. - if (IsKindOf(CLASSINFO(wxPrinterDC))) + // 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.IsOk() && (caps & RC_STRETCHDIB) ) { - HDC dc_src = (HDC) source->m_hDC; - RECT rect; - for (int y = 0; y < height; y++) - { - // This is Stefan Csomor's optimisation, where - // identical adjacent pixels are drawn together. - // We still need a faster way of drawing bitmaps, - // perhaps converting to a DIB first and using SetDIBitsToDevice. - for (int x = 0; x < width; x++) - { - COLORREF col = ::GetPixel(dc_src, x, y) ; - HBRUSH brush = ::CreateSolidBrush( col ); - - rect.left = xdest1 + x; - rect.top = ydest1 + y; - while( (x + 1 < width) && (::GetPixel(dc_src, x + 1, y) == col ) ) - { - ++x ; - } - rect.right = xdest1 + x + 1; - rect.bottom = rect.top + 1; - ::FillRect((HDC) m_hDC, &rect, brush); - ::DeleteObject(brush); - } - } -/* - HDC dc_src = (HDC) source->m_hDC; - RECT rect; - for (int x = 0; x < width; x++) + DIBSECTION ds; + wxZeroMemory(ds); + + if ( ::GetObject(GetHbitmapOf(bmpSrc), + sizeof(ds), + &ds) == sizeof(ds) ) { - for (int y = 0; y < height; y++) + SET_STRETCH_BLT_MODE(GetHdc()); + + // 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 + srcHeight); + } + + if ( ::StretchDIBits(GetHdc(), + xdest, ydest, + dstWidth, dstHeight, + xsrc, ysrc, + srcWidth, srcHeight, + 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 { - HBRUSH brush = ::CreateSolidBrush(::GetPixel(dc_src, x, y)); - rect.left = xdest1 + x; rect.right = rect.left + 1; - rect.top = ydest1 + y; rect.bottom = rect.top + 1; - ::FillRect(GetHdc(), &rect, brush); - ::DeleteObject(brush); + success = true; } } -*/ - } - else + } + + if ( !success && (caps & RC_STRETCHBLT) ) +#endif + // __WXWINCE__ { - success = (BitBlt(GetHdc(), xdest1, ydest1, (int)width, (int)height, (HDC) source->m_hDC, - xsrc1, ysrc1, dwRop) != 0); + SET_STRETCH_BLT_MODE(GetHdc()); + + if ( !::StretchBlt + ( + GetHdc(), + xdest, ydest, dstWidth, dstHeight, + hdcSrc, + xsrc, ysrc, srcWidth, srcHeight, + dwRop + ) ) + { + wxLogLastError(wxT("StretchBlt")); + } + else + { + success = true; + } + } + + if ( !success ) + { + if ( !::BitBlt(GetHdc(), xdest, ydest, dstWidth, dstHeight, + hdcSrc, xsrc, ysrc, dwRop) ) + { + wxLogLastError(wxT("BitBlt")); + } + else + { + success = true; + } } } - ::SetTextColor(GetHdc(), old_textground); - ::SetBkColor(GetHdc(), old_background); return success; } -void wxDC::DoGetSize(int *w, int *h) const +void wxMSWDCImpl::GetDeviceSize(int *width, int *height) const { - if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES); - if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES); + WXMICROWIN_CHECK_HDC + + if ( width ) + *width = ::GetDeviceCaps(GetHdc(), HORZRES); + if ( height ) + *height = ::GetDeviceCaps(GetHdc(), VERTRES); } -void wxDC::DoGetSizeMM(int *w, int *h) const +void wxMSWDCImpl::DoGetSizeMM(int *w, int *h) const { - if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE); - if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE); + 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 + // will also work for wxWindowDC and wxClientDC even though their size is + // not the same as the total size of the screen + int wPixels, hPixels; + DoGetSize(&wPixels, &hPixels); + + if ( w ) + { + int wTotal = ::GetDeviceCaps(GetHdc(), HORZRES); + + wxCHECK_RET( wTotal, wxT("0 width device?") ); + + *w = (wPixels * ::GetDeviceCaps(GetHdc(), HORZSIZE)) / wTotal; + } + + if ( h ) + { + int hTotal = ::GetDeviceCaps(GetHdc(), VERTRES); + + wxCHECK_RET( hTotal, wxT("0 height device?") ); + + *h = (hPixels * ::GetDeviceCaps(GetHdc(), VERTSIZE)) / hTotal; + } } -wxSize wxDC::GetPPI() const +wxSize wxMSWDCImpl::GetPPI() const { + WXMICROWIN_CHECK_HDC_RET(wxSize(0,0)) + int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); return wxSize(x, y); } -// For use by wxWindows only, unless custom units are required. -void wxDC::SetLogicalScale(double x, double y) +// ---------------------------------------------------------------------------- +// DC caching +// ---------------------------------------------------------------------------- + +#if wxUSE_DC_CACHEING + +/* + * This implementation is a bit ugly and uses the old-fashioned wxList class, so I will + * improve it in due course, either using arrays, or simply storing pointers to one + * entry for the bitmap, and two for the DCs. -- JACS + */ + +wxObjectList wxMSWDCImpl::sm_bitmapCache; +wxObjectList wxMSWDCImpl::sm_dcCache; + +wxDCCacheEntry::wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth) { - m_logicalScaleX = x; - m_logicalScaleY = y; + m_bitmap = hBitmap; + m_dc = 0; + m_width = w; + m_height = h; + m_depth = depth; } -#if WXWIN_COMPATIBILITY -void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y, - float *descent, float *externalLeading, - wxFont *theFont, bool use16bit) const +wxDCCacheEntry::wxDCCacheEntry(WXHDC hDC, int depth) { - 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; + m_bitmap = 0; + m_dc = hDC; + m_width = 0; + m_height = 0; + m_depth = depth; } -#endif - -// --------------------------------------------------------------------------- -// spline drawing code -// --------------------------------------------------------------------------- -#if wxUSE_SPLINES +wxDCCacheEntry::~wxDCCacheEntry() +{ + if (m_bitmap) + ::DeleteObject((HBITMAP) m_bitmap); + if (m_dc) + ::DeleteDC((HDC) m_dc); +} -class wxSpline: public wxObject +wxDCCacheEntry* wxMSWDCImpl::FindBitmapInCache(WXHDC dc, int w, int h) { -public: - int type; - wxList *points; + int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL); + wxList::compatibility_iterator node = sm_bitmapCache.GetFirst(); + while (node) + { + wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData(); - wxSpline(wxList *list); - void DeletePoints(); + if (entry->m_depth == depth) + { + if (entry->m_width < w || entry->m_height < h) + { + ::DeleteObject((HBITMAP) entry->m_bitmap); + entry->m_bitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h); + if ( !entry->m_bitmap) + { + wxLogLastError(wxT("CreateCompatibleBitmap")); + } + entry->m_width = w; entry->m_height = h; + return entry; + } + return entry; + } - // Doesn't delete points - ~wxSpline(); -}; + node = node->GetNext(); + } + WXHBITMAP hBitmap = (WXHBITMAP) ::CreateCompatibleBitmap((HDC) dc, w, h); + if ( !hBitmap) + { + wxLogLastError(wxT("CreateCompatibleBitmap")); + } + wxDCCacheEntry* entry = new wxDCCacheEntry(hBitmap, w, h, depth); + AddToBitmapCache(entry); + return entry; +} -void wx_draw_open_spline(wxDC *dc, wxSpline *spline); +wxDCCacheEntry* wxMSWDCImpl::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc) +{ + int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL); + wxList::compatibility_iterator node = sm_dcCache.GetFirst(); + while (node) + { + wxDCCacheEntry* entry = (wxDCCacheEntry*) node->GetData(); + + // Don't return the same one as we already have + if (!notThis || (notThis != entry)) + { + if (entry->m_depth == depth) + { + return entry; + } + } -void wx_quadratic_spline(double a1, double b1, double a2, double b2, - double a3, double b3, double a4, double b4); -void wx_clear_stack(); -int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3, - double *y3, double *x4, double *y4); -void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, - double x4, double y4); -static bool wx_spline_add_point(double x, double y); -static void wx_spline_draw_point_array(wxDC *dc); -wxSpline *wx_make_spline(int x1, int y1, int x2, int y2, int x3, int y3); + node = node->GetNext(); + } + WXHDC hDC = (WXHDC) ::CreateCompatibleDC((HDC) dc); + if ( !hDC) + { + wxLogLastError(wxT("CreateCompatibleDC")); + } + wxDCCacheEntry* entry = new wxDCCacheEntry(hDC, depth); + AddToDCCache(entry); + return entry; +} -void wxDC::DoDrawSpline(wxList *list) +void wxMSWDCImpl::AddToBitmapCache(wxDCCacheEntry* entry) { - wxSpline spline(list); + sm_bitmapCache.Append(entry); +} - wx_draw_open_spline(this, &spline); +void wxMSWDCImpl::AddToDCCache(wxDCCacheEntry* entry) +{ + sm_dcCache.Append(entry); } -wxList wx_spline_point_list; +void wxMSWDCImpl::ClearCache() +{ + WX_CLEAR_LIST(wxList, sm_dcCache); + WX_CLEAR_LIST(wxList, sm_bitmapCache); +} -void wx_draw_open_spline(wxDC *dc, wxSpline *spline) +// Clean up cache at app exit +class wxDCModule : public wxModule { - wxPoint *p; - double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4; - double x1, y1, x2, y2; +public: + virtual bool OnInit() { return true; } + virtual void OnExit() { wxMSWDCImpl::ClearCache(); } - wxNode *node = spline->points->First(); - p = (wxPoint *)node->Data(); +private: + DECLARE_DYNAMIC_CLASS(wxDCModule) +}; - x1 = p->x; - y1 = p->y; +IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule) - node = node->Next(); - p = (wxPoint *)node->Data(); +#endif // wxUSE_DC_CACHEING - x2 = p->x; - y2 = p->y; - cx1 = (double)((x1 + x2) / 2); - cy1 = (double)((y1 + y2) / 2); - cx2 = (double)((cx1 + x2) / 2); - cy2 = (double)((cy1 + y2) / 2); +// ---------------------------------------------------------------------------- +// alpha channel support +// ---------------------------------------------------------------------------- - wx_spline_add_point(x1, y1); +static bool AlphaBlt(HDC hdcDst, + int x, int y, int dstWidth, int dstHeight, + int srcX, int srcY, + int srcWidth, int srcHeight, + HDC hdcSrc, + const wxBitmap& bmp) +{ + wxASSERT_MSG( bmp.IsOk() && bmp.HasAlpha(), wxT("AlphaBlt(): invalid bitmap") ); + wxASSERT_MSG( hdcDst && hdcSrc, wxT("AlphaBlt(): invalid HDC") ); - while ((node = node->Next()) != NULL) - { - p = (wxPoint *)node->Data(); - x1 = x2; - y1 = y2; - x2 = p->x; - y2 = p->y; - cx4 = (double)(x1 + x2) / 2; - cy4 = (double)(y1 + y2) / 2; - cx3 = (double)(x1 + cx4) / 2; - cy3 = (double)(y1 + cy4) / 2; + // 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); - wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4); + static AlphaBlend_t + pfnAlphaBlend = (AlphaBlend_t)wxMSIMG32DLL.GetSymbol(wxT("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, dstWidth, dstHeight, + hdcSrc, srcX, srcY, srcWidth, srcHeight, + bf) ) + { + // skip wxAlphaBlend() call below + return true; + } - cx1 = cx4; - cy1 = cy4; - cx2 = (double)(cx1 + x2) / 2; - cy2 = (double)(cy1 + y2) / 2; + wxLogLastError(wxT("AlphaBlend")); } +#else + wxUnusedVar(hdcSrc); +#endif // defined(AC_SRC_OVER) - wx_spline_add_point((double)wx_round(cx1), (double)wx_round(cy1)); - wx_spline_add_point(x2, y2); - - wx_spline_draw_point_array(dc); + // AlphaBlend() unavailable of failed: use our own (probably much slower) + // implementation +#ifdef wxHAS_RAW_BITMAP + wxAlphaBlend(hdcDst, x, y, dstWidth, dstHeight, srcX, srcY, srcWidth, srcHeight, bmp); + return true; +#else // !wxHAS_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 // wxHAS_RAW_BITMAP/!wxHAS_RAW_BITMAP } -/********************* CURVES FOR SPLINES ***************************** - The following spline drawing routine is from +// wxAlphaBlend: our fallback if ::AlphaBlend() is unavailable +#ifdef wxHAS_RAW_BITMAP - "An Algorithm for High-Speed Curve Generation" - by George Merrill Chaikin, - Computer Graphics and Image Processing, 3, Academic Press, - 1974, 346-349. +static void +wxAlphaBlend(HDC hdcDst, int xDst, int yDst, + int dstWidth, int dstHeight, + int srcX, int srcY, + int srcWidth, int srcHeight, + const wxBitmap& bmpSrc) +{ + // get the destination DC pixels + wxBitmap bmpDst(dstWidth, dstHeight, 32 /* force creating RGBA DIB */); + MemoryHDC hdcMem; + SelectInHDC select(hdcMem, GetHbitmapOf(bmpDst)); - and + if ( !::BitBlt(hdcMem, 0, 0, dstWidth, dstHeight, hdcDst, xDst, yDst, SRCCOPY) ) + { + wxLogLastError(wxT("BitBlt")); + } - "On Chaikin's Algorithm" by R. F. Riesenfeld, - Computer Graphics and Image Processing, 4, Academic Press, - 1975, 304-310. + // combine them with the source bitmap using alpha + wxAlphaPixelData dataDst(bmpDst), + dataSrc((wxBitmap &)bmpSrc); -***********************************************************************/ + wxCHECK_RET( dataDst && dataSrc, + wxT("failed to get raw data in wxAlphaBlend") ); -#define half(z1, z2) ((z1+z2)/2.0) -#define THRESHOLD 5 + wxAlphaPixelData::Iterator pDst(dataDst), + pSrc(dataSrc); -/* iterative version */ -void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4, - double b4) -{ - register double xmid, ymid; - double x1, y1, x2, y2, x3, y3, x4, y4; + for ( int y = 0; y < dstHeight; y++ ) + { + wxAlphaPixelData::Iterator pDstRowStart = pDst; - wx_clear_stack(); - wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4); + for ( int x = 0; x < dstWidth; x++ ) + { + // source is point sampled, Alpha StretchBlit is ugly on Win95 + // (but does not impact performance) + pSrc.MoveTo(dataSrc, srcX + (srcWidth*x/dstWidth), srcY + (srcHeight*y/dstHeight)); + + // note that source bitmap uses premultiplied alpha (as required by + // the real AlphaBlend) + const unsigned beta = 255 - pSrc.Alpha(); - while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) { - xmid = (double)half(x2, x3); - ymid = (double)half(y2, y3); - if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD && - fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) { - wx_spline_add_point((double)wx_round(x1), (double)wx_round(y1)); - wx_spline_add_point((double)wx_round(xmid), (double)wx_round(ymid)); - } else { - wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3), - (double)half(x3, x4), (double)half(y3, y4), x4, y4); - wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2), - (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid); + 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; } + + pDst = pDstRowStart; + pDst.OffsetY(dataDst, 1); + } + + // and finally blit them back to the destination DC + if ( !::BitBlt(hdcDst, xDst, yDst, dstWidth, dstHeight, hdcMem, 0, 0, SRCCOPY) ) + { + wxLogLastError(wxT("BitBlt")); } } +#endif // wxHAS_RAW_BITMAP + +void wxMSWDCImpl::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(wxT("GradientFill")); -/* utilities used by spline drawing routines */ + 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(wxT("GradientFill")); + } +#endif // wxUSE_DYNLIB_CLASS -typedef struct wx_spline_stack_struct { - double x1, y1, x2, y2, x3, y3, x4, y4; + wxDCImpl::DoGradientFillLinear(rect, initialColour, destColour, nDirection); } -Stack; -#define SPLINE_STACK_DEPTH 20 -static Stack wx_spline_stack[SPLINE_STACK_DEPTH]; -static Stack *wx_stack_top; -static int wx_stack_count; +#if wxUSE_DYNLIB_CLASS -void wx_clear_stack() +static DWORD wxGetDCLayout(HDC hdc) { - wx_stack_top = wx_spline_stack; - wx_stack_count = 0; -} + typedef DWORD (WINAPI *GetLayout_t)(HDC); + static GetLayout_t + wxDL_INIT_FUNC(s_pfn, GetLayout, wxDynamicLibrary(wxT("gdi32.dll"))); -void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4) -{ - wx_stack_top->x1 = x1; - wx_stack_top->y1 = y1; - wx_stack_top->x2 = x2; - wx_stack_top->y2 = y2; - wx_stack_top->x3 = x3; - wx_stack_top->y3 = y3; - wx_stack_top->x4 = x4; - wx_stack_top->y4 = y4; - wx_stack_top++; - wx_stack_count++; + return s_pfnGetLayout ? s_pfnGetLayout(hdc) : (DWORD)-1; } -int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, - double *x3, double *y3, double *x4, double *y4) +wxLayoutDirection wxMSWDCImpl::GetLayoutDirection() const { - if (wx_stack_count == 0) - return (0); - wx_stack_top--; - wx_stack_count--; - *x1 = wx_stack_top->x1; - *y1 = wx_stack_top->y1; - *x2 = wx_stack_top->x2; - *y2 = wx_stack_top->y2; - *x3 = wx_stack_top->x3; - *y3 = wx_stack_top->y3; - *x4 = wx_stack_top->x4; - *y4 = wx_stack_top->y4; - return (1); -} + DWORD layout = wxGetDCLayout(GetHdc()); -static bool wx_spline_add_point(double x, double y) -{ - wxPoint *point = new wxPoint; - point->x = (int) x; - point->y = (int) y; - wx_spline_point_list.Append((wxObject*)point); - return TRUE; + if ( layout == (DWORD)-1 ) + return wxLayout_Default; + + return layout & LAYOUT_RTL ? wxLayout_RightToLeft : wxLayout_LeftToRight; } -static void wx_spline_draw_point_array(wxDC *dc) +void wxMSWDCImpl::SetLayoutDirection(wxLayoutDirection dir) { - dc->DrawLines(&wx_spline_point_list, 0, 0); - wxNode *node = wx_spline_point_list.First(); - while (node) + typedef DWORD (WINAPI *SetLayout_t)(HDC, DWORD); + static SetLayout_t + wxDL_INIT_FUNC(s_pfn, SetLayout, wxDynamicLibrary(wxT("gdi32.dll"))); + if ( !s_pfnSetLayout ) + return; + + if ( dir == wxLayout_Default ) { - wxPoint *point = (wxPoint *)node->Data(); - delete point; - delete node; - node = wx_spline_point_list.First(); + dir = wxTheApp->GetLayoutDirection(); + if ( dir == wxLayout_Default ) + return; } -} -wxSpline::wxSpline(wxList *list) -{ - points = list; + DWORD layout = wxGetDCLayout(GetHdc()); + if ( dir == wxLayout_RightToLeft ) + layout |= LAYOUT_RTL; + else + layout &= ~LAYOUT_RTL; + + s_pfnSetLayout(GetHdc(), layout); } -wxSpline::~wxSpline() +#else // !wxUSE_DYNLIB_CLASS + +// we can't provide RTL support without dynamic loading, so stub it out +wxLayoutDirection wxMSWDCImpl::GetLayoutDirection() const { + return wxLayout_Default; } -void wxSpline::DeletePoints() +void wxMSWDCImpl::SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { - for(wxNode *node = points->First(); node; node = points->First()) - { - wxPoint *point = (wxPoint *)node->Data(); - delete point; - delete node; - } - delete points; } - -#endif // wxUSE_SPLINES - +#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS