X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7ecf5ac7cd334ba3f447625dd7d970d62c302fcc..2d956b58023a4955313a1c1531bc70a0deb0b831:/src/msw/dc.cpp diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp index 0bbb739078..293626093c 100644 --- a/src/msw/dc.cpp +++ b/src/msw/dc.cpp @@ -40,15 +40,16 @@ #include "wx/icon.h" #endif -#include "wx/settings.h" +#include "wx/sysopt.h" #include "wx/dcprint.h" +#include "wx/module.h" #include #include #include "wx/msw/private.h" // needs to be before #include -#if wxUSE_COMMON_DIALOGS +#if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__) #include #endif @@ -76,6 +77,25 @@ static const int MM_METRIC = 10; // MSDN docs for how this and other numbers in wxDC::Blit() are obtained) #define DSTCOPY 0x00AA0029 // a.k.a. NOP operation +// ---------------------------------------------------------------------------- +// macros for logical <-> device coords conversion +// ---------------------------------------------------------------------------- + +/* + 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. + */ + +// logical to device +#define XLOG2DEV(x) (x) +#define YLOG2DEV(y) (y) + +// device to logical +#define XDEV2LOG(x) (x) +#define YDEV2LOG(y) (y) + // --------------------------------------------------------------------------- // private functions // --------------------------------------------------------------------------- @@ -117,7 +137,8 @@ private: wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc) { - if ( dc.GetBrush().GetStyle() == wxSTIPPLE_MASK_OPAQUE ) + const wxBrush& brush = dc.GetBrush(); + if ( brush.Ok() && brush.GetStyle() == wxSTIPPLE_MASK_OPAQUE ) { HDC hdc = GetHdcOf(dc); m_colFgOld = ::GetTextColor(hdc); @@ -177,16 +198,14 @@ wxDC::wxDC() m_oldPen = 0; m_oldBrush = 0; m_oldFont = 0; +#if wxUSE_PALETTE m_oldPalette = 0; +#endif // wxUSE_PALETTE m_bOwnsDC = FALSE; m_hDC = 0; - - m_windowExtX = VIEWPORT_EXTENT; - m_windowExtY = VIEWPORT_EXTENT; } - wxDC::~wxDC() { if ( m_hDC != 0 ) @@ -245,16 +264,21 @@ 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; @@ -266,8 +290,12 @@ void wxDC::SelectOldObjects(WXHDC dc) void wxDC::UpdateClipBox() { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + RECT rect; - GetClipBox(GetHdc(), &rect); + ::GetClipBox(GetHdc(), &rect); m_clipX1 = (wxCoord) XDEV2LOG(rect.left); m_clipY1 = (wxCoord) YDEV2LOG(rect.top); @@ -275,10 +303,50 @@ void wxDC::UpdateClipBox() m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom); } -void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h) +// common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion() +void wxDC::SetClippingHrgn(WXHRGN hrgn) { + wxCHECK_RET( hrgn, wxT("invalid clipping region") ); + +#ifdef __WXMICROWIN__ + if (!GetHdc()) return; +#endif // __WXMICROWIN__ + + // note that we combine the new clipping region with the existing one: this + // is compatible with what the other ports do and is the documented + // behaviour now (starting with 2.3.3) +#ifdef __WIN16__ + RECT rectClip; + if ( !::GetClipBox(GetHdc(), &rectClip) ) + return; + + 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 // Win32 + if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR ) + { + wxLogLastError(_T("ExtSelectClipRgn")); + + return; + } +#endif // Win16/32 + m_clipping = TRUE; + UpdateClipBox(); +} + +void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h) +{ // the region coords are always the device ones, so do the translation // manually // @@ -293,41 +361,32 @@ void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h) } else { - if ( ::SelectClipRgn(GetHdc(), hrgn) == ERROR ) - { - wxLogLastError(_T("SelectClipRgn")); - } - DeleteObject(hrgn); + SetClippingHrgn((WXHRGN)hrgn); - UpdateClipBox(); + ::DeleteObject(hrgn); } } void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) { - wxCHECK_RET( GetHrgnOf(region), wxT("invalid clipping region") ); - - m_clipping = TRUE; - -#ifdef __WIN16__ - SelectClipRgn(GetHdc(), GetHrgnOf(region)); -#else // Win32 - ExtSelectClipRgn(GetHdc(), GetHrgnOf(region), RGN_AND); -#endif // Win16/32 - - UpdateClipBox(); + SetClippingHrgn(region.GetHRGN()); } void wxDC::DestroyClippingRegion() { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + if (m_clipping && m_hDC) { // TODO: this should restore the previous clipping region, - // so that OnPaint processing works correctly, and the update clipping region - // doesn't get destroyed after the first DestroyClippingRegion. + // 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); } m_clipping = FALSE; @@ -357,6 +416,10 @@ bool wxDC::CanGetTextExtent() const int wxDC::GetDepth() const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return 16; +#endif + return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL); } @@ -366,6 +429,10 @@ int wxDC::GetDepth() const void wxDC::Clear() { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + RECT rect; if ( m_canvas ) { @@ -386,24 +453,32 @@ void wxDC::Clear() (void) ::SetMapMode(GetHdc(), MM_TEXT); - 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); + + int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX, + height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY; ::SetMapMode(GetHdc(), MM_ANISOTROPIC); ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); - ::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL); + ::SetWindowExtEx(GetHdc(), width, height, NULL); ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); } -void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) +bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) { - if ( !::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), +#ifdef __WXMICROWIN__ + if (!GetHDC()) return FALSE; +#endif + + bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), col.GetPixel(), style == wxFLOOD_SURFACE ? FLOODFILLSURFACE - : FLOODFILLBORDER) ) + : FLOODFILLBORDER) ) ; + if (!success) { // quoting from the MSDN docs: // @@ -421,10 +496,16 @@ void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) } CalcBoundingBox(x, y); + + return success; } bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return FALSE; +#endif + wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") ); // get the color of the pixel @@ -437,6 +518,10 @@ bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const void wxDC::DoCrossHair(wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxCoord x1 = x-VIEWPORT_EXTENT; wxCoord y1 = y-VIEWPORT_EXTENT; wxCoord x2 = x+VIEWPORT_EXTENT; @@ -454,13 +539,13 @@ void wxDC::DoCrossHair(wxCoord x, wxCoord y) void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + (void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL); (void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2)); - // Normalization: Windows doesn't draw the last point of the line. - // But apparently neither does GTK+, so we take it out again. -// (void)LineTo(GetHdc(), XLOG2DEV(x2) + 1, YLOG2DEV(y2)); - CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); } @@ -471,6 +556,10 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling double dx = xc - x1; @@ -519,6 +608,10 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxCoord x2 = x1 + width, y2 = y1 + height; @@ -553,6 +646,10 @@ void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, void wxDC::DoDrawPoint(wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + COLORREF color = 0x00ffffff; if (m_pen.Ok()) { @@ -566,6 +663,10 @@ void wxDC::DoDrawPoint(wxCoord x, wxCoord y) void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling // Do things less efficiently if we have offsets @@ -599,6 +700,10 @@ void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffs void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) { @@ -626,6 +731,10 @@ void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling wxCoord x2 = x + width; @@ -663,6 +772,10 @@ void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling // Now, a negative radius value is interpreted to mean @@ -699,6 +812,10 @@ void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord h void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling wxCoord x2 = (x+width); @@ -713,6 +830,10 @@ void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) // Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling wxCoord x2 = x + w; @@ -756,6 +877,10 @@ void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,d void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") ); #ifdef __WIN32__ @@ -770,6 +895,10 @@ void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") ); int width = bmp.GetWidth(), @@ -777,6 +906,10 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask HBITMAP hbmpMask = 0; +#if wxUSE_PALETTE + HPALETTE oldPal = 0; +#endif // wxUSE_PALETTE + if ( useMask ) { wxMask *mask = bmp.GetMask(); @@ -790,7 +923,6 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask useMask = FALSE; } } - if ( useMask ) { #ifdef __WIN32__ @@ -800,15 +932,33 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask // than the wxWindows fall-back implementation. So we need // to be able to switch this on and off at runtime. bool ok = FALSE; - if (wxSystemSettings::GetOptionInt(wxT("no-maskblt")) == 0) +#if wxUSE_SYSTEM_OPTIONS + if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0) +#endif { + HDC cdc = GetHdc(); HDC hdcMem = ::CreateCompatibleDC(GetHdc()); - ::SelectObject(hdcMem, GetHbitmapOf(bmp)); + 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(GetHdc(), x, y, width, height, + 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); } @@ -844,8 +994,24 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() ); } - ::SelectObject( memdc, hbitmap ); +#if wxUSE_PALETTE + wxPalette *pal = bmp.GetPalette(); + if ( pal && ::GetDeviceCaps(cdc,BITSPIXEL) <= 8 ) + { + oldPal = ::SelectPalette(memdc, GetHpaletteOf(*pal), FALSE); + ::RealizePalette(memdc); + } +#endif // wxUSE_PALETTE + + HGDIOBJ hOldBitmap = ::SelectObject( memdc, hbitmap ); ::BitBlt( cdc, x, y, width, height, memdc, 0, 0, SRCCOPY); + +#if wxUSE_PALETTE + if (oldPal) + ::SelectPalette(memdc, oldPal, FALSE); +#endif // wxUSE_PALETTE + + ::SelectObject( memdc, hOldBitmap ); ::DeleteDC( memdc ); ::SetTextColor(GetHdc(), old_textground); @@ -855,6 +1021,10 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + DrawAnyText(text, x, y); // update the bounding box @@ -867,6 +1037,10 @@ void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // prepare for drawing the text if ( m_textForegroundColour.Ok() ) SetTextColor(GetHdc(), m_textForegroundColour.GetPixel()); @@ -899,6 +1073,10 @@ void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // 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 @@ -910,9 +1088,10 @@ void wxDC::DoDrawRotatedText(const wxString& text, #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.Ok() ? m_font : *wxSWISS_FONT; HFONT hfont = (HFONT)font.GetResourceHandle(); LOGFONT lf; if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 ) @@ -965,43 +1144,71 @@ void wxDC::DoDrawRotatedText(const wxString& text, // set GDI objects // --------------------------------------------------------------------------- -void wxDC::SetPalette(const wxPalette& palette) +#if wxUSE_PALETTE + +void wxDC::DoSelectPalette(bool realize) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_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.Ok() ) { - // Setting a NULL colourmap is a way of restoring - // the original colourmap - if (m_oldPalette) - { - ::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE); - m_oldPalette = 0; - } + HPALETTE oldPal = ::SelectPalette(GetHdc(), + GetHpaletteOf(m_palette), + FALSE); + if (!m_oldPalette) + m_oldPalette = (WXHPALETTE) oldPal; - return; + if (realize) + ::RealizePalette(GetHdc()); } +} - if (m_palette.Ok() && m_palette.GetHPALETTE()) +void wxDC::SetPalette(const wxPalette& palette) +{ + if ( palette.Ok() ) { - HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), TRUE); - if (!m_oldPalette) - m_oldPalette = (WXHPALETTE) oldPal; + m_palette = palette; + DoSelectPalette(TRUE); + } +} + +void wxDC::InitializePalette() +{ + if ( wxDisplayDepth() <= 8 ) + { + // 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_canvas->GetAncestorWithCustomPalette(); - ::RealizePalette(GetHdc()); + m_hasCustomPalette = win && win->HasCustomPalette(); + if ( m_hasCustomPalette ) + { + m_palette = win->GetPalette(); + + // turn on MSW translation for this palette + DoSelectPalette(); + } } } +#endif // wxUSE_PALETTE + void wxDC::SetFont(const wxFont& the_font) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldFont) @@ -1033,6 +1240,10 @@ void wxDC::SetFont(const wxFont& the_font) void wxDC::SetPen(const wxPen& pen) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldPen) @@ -1063,6 +1274,10 @@ void wxDC::SetPen(const wxPen& pen) void wxDC::SetBrush(const wxBrush& brush) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. if (m_oldBrush) @@ -1087,12 +1302,12 @@ void wxDC::SetBrush(const wxBrush& brush) if ( stipple && stipple->Ok() ) { #ifdef __WIN32__ - ::SetBrushOrgEx(GetHdc(), + ::SetBrushOrgEx(GetHdc(), m_deviceOriginX % stipple->GetWidth(), m_deviceOriginY % stipple->GetHeight(), NULL); // don't need previous brush origin #else - ::SetBrushOrg(GetHdc(), + ::SetBrushOrg(GetHdc(), m_deviceOriginX % stipple->GetWidth(), m_deviceOriginY % stipple->GetHeight()); #endif @@ -1110,6 +1325,10 @@ void wxDC::SetBrush(const wxBrush& brush) void wxDC::SetBackground(const wxBrush& brush) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + m_backgroundBrush = brush; if (!m_backgroundBrush.Ok()) @@ -1151,22 +1370,22 @@ void wxDC::SetBackground(const wxBrush& brush) void wxDC::SetBackgroundMode(int mode) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + 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); - Last change: AC 29 Jan 101 8:54 pm -*/ } void wxDC::SetLogicalFunction(int function) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + m_logicalFunction = function; SetRop(m_hDC); @@ -1230,26 +1449,45 @@ void wxDC::EndPage() wxCoord wxDC::GetCharHeight() const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return 0; +#endif + TEXTMETRIC lpTextMetric; GetTextMetrics(GetHdc(), &lpTextMetric); - return YDEV2LOGREL(lpTextMetric.tmHeight); + return lpTextMetric.tmHeight; } wxCoord wxDC::GetCharWidth() const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return 0; +#endif + 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 *font) const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) + { + if (x) *x = 0; + if (y) *y = 0; + if (descent) *descent = 0; + if (externalLeading) *externalLeading = 0; + return; + } +#endif // __WXMICROWIN__ + HFONT hfontOld; if ( font ) { @@ -1268,10 +1506,14 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, GetTextExtentPoint(GetHdc(), string, string.length(), &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; + if (x) + *x = sizeRect.cx; + if (y) + *y = sizeRect.cy; + if (descent) + *descent = tm.tmDescent; + if (externalLeading) + *externalLeading = tm.tmExternalLeading; if ( hfontOld ) { @@ -1281,74 +1523,84 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, void wxDC::SetMapMode(int mode) { - m_mappingMode = mode; - - int pixel_width = 0; - int pixel_height = 0; - int mm_width = 0; - int mm_height = 0; +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif - pixel_width = GetDeviceCaps(GetHdc(), HORZRES); - pixel_height = GetDeviceCaps(GetHdc(), VERTRES); - mm_width = GetDeviceCaps(GetHdc(), HORZSIZE); - mm_height = GetDeviceCaps(GetHdc(), VERTSIZE); + m_mappingMode = mode; - if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0)) + if ( mode == wxMM_TEXT ) { - return; + m_logicalScaleX = + m_logicalScaleY = 1.0; } - - double mm2pixelsX = pixel_width/mm_width; - double mm2pixelsY = pixel_height/mm_height; - - switch (mode) + else // need to do some calculations { - 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: + 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) ) { - m_logicalScaleX = (mm2pixelsX/10.0); - m_logicalScaleY = (mm2pixelsY/10.0); - break; + // we can't calculate mm2pixels[XY] then! + return; } - default: - case wxMM_TEXT: + + double mm2pixelsX = pixel_width / mm_width, + mm2pixelsY = pixel_height / mm_height; + + switch (mode) { - m_logicalScaleX = 1.0; - m_logicalScaleY = 1.0; - break; + 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( _T("unknown mapping mode in SetMapMode") ); } } - if (::GetMapMode(GetHdc()) != MM_ANISOTROPIC) - ::SetMapMode(GetHdc(), MM_ANISOTROPIC); + // VZ: it seems very wasteful to always use MM_ANISOTROPIC when in 99% of + // cases we could do with MM_TEXT and in the remaining 0.9% with + // MM_ISOTROPIC (TODO!) + ::SetMapMode(GetHdc(), MM_ANISOTROPIC); + + int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX, + height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY; - 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); + ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); + ::SetWindowExtEx(GetHdc(), width, height, NULL); + + ::SetViewportOrgEx(GetHdc(), m_deviceOriginX, m_deviceOriginY, NULL); + ::SetWindowOrgEx(GetHdc(), m_logicalOriginX, m_logicalOriginY, NULL); } void wxDC::SetUserScale(double x, double y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + + if ( x == m_userScaleX && y == m_userScaleY ) + return; + m_userScaleX = x; m_userScaleY = y; @@ -1357,14 +1609,31 @@ void wxDC::SetUserScale(double x, double y) void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) { - m_signX = xLeftRight ? 1 : -1; - m_signY = yBottomUp ? -1 : 1; +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif - SetMapMode(m_mappingMode); + int signX = xLeftRight ? 1 : -1, + signY = yBottomUp ? -1 : 1; + + if ( signX != m_signX || signY != m_signY ) + { + m_signX = signX; + m_signY = signY; + + SetMapMode(m_mappingMode); + } } void wxDC::SetSystemScale(double x, double y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + + if ( x == m_scaleX && y == m_scaleY ) + return; + m_scaleX = x; m_scaleY = y; @@ -1373,6 +1642,13 @@ void wxDC::SetSystemScale(double x, double y) void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + + if ( x == m_logicalOriginX && y == m_logicalOriginY ) + return; + m_logicalOriginX = x; m_logicalOriginY = y; @@ -1381,6 +1657,13 @@ void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + + if ( x == m_deviceOriginX && y == m_deviceOriginY ) + return; + m_deviceOriginX = x; m_deviceOriginY = y; @@ -1393,46 +1676,46 @@ void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const { - double xRel = x - m_deviceOriginX; - xRel /= m_logicalScaleX*m_userScaleX*m_signX*m_scaleX; - return (wxCoord)(xRel + m_logicalOriginX); + return DeviceToLogicalXRel(x - m_deviceOriginX)*m_signX + m_logicalOriginX; } wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const { - return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX)); + // axis orientation is not taken into account for conversion of a distance + return (wxCoord)(x / (m_logicalScaleX*m_userScaleX*m_scaleX)); } wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const { - double yRel = y - m_deviceOriginY; - yRel /= m_logicalScaleY*m_userScaleY*m_signY*m_scaleY; - return (wxCoord)(yRel + m_logicalOriginY); + return DeviceToLogicalYRel(y - m_deviceOriginY)*m_signY + m_logicalOriginY; } wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const { - return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY)); + // axis orientation is not taken into account for conversion of a distance + return (wxCoord)( y / (m_logicalScaleY*m_userScaleY*m_scaleY)); } wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const { - return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX); + return LogicalToDeviceXRel(x - m_logicalOriginX)*m_signX + m_deviceOriginX; } wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const { - return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX); + // axis orientation is not taken into account for conversion of a distance + return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_scaleX); } wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const { - return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY); + return LogicalToDeviceYRel(y - m_logicalOriginY)*m_signY + m_deviceOriginY; } wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const { - return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY); + // axis orientation is not taken into account for conversion of a distance + return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_scaleY); } // --------------------------------------------------------------------------- @@ -1442,8 +1725,13 @@ wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, - int rop, bool useMask) + int rop, bool useMask, + wxCoord xsrcMask, wxCoord ysrcMask) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return FALSE; +#endif + wxMask *mask = NULL; if ( useMask ) { @@ -1458,6 +1746,11 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } } + if (xsrcMask == -1 && ysrcMask == -1) + { + xsrcMask = xsrc; ysrcMask = ysrc; + } + COLORREF old_textground = ::GetTextColor(GetHdc()); COLORREF old_background = ::GetBkColor(GetHdc()); if (m_textForegroundColour.Ok()) @@ -1506,11 +1799,13 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, // On some systems, MaskBlt succeeds yet is much much slower // than the wxWindows fall-back implementation. So we need // to be able to switch this on and off at runtime. - if (wxSystemSettings::GetOptionInt(wxT("no-maskblt")) == 0) +#if wxUSE_SYSTEM_OPTIONS + if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0) +#endif { success = ::MaskBlt(GetHdc(), xdest, ydest, width, height, GetHdcOf(*source), xsrc, ysrc, - (HBITMAP)mask->GetMaskBitmap(), xsrc, ysrc, + (HBITMAP)mask->GetMaskBitmap(), xsrcMask, ysrcMask, MAKEROP4(dwRop, DSTCOPY)) != 0; } @@ -1518,13 +1813,30 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, #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, source->GetHDC()); + dc_mask = (HDC) dcCacheEntry1->m_dc; + wxDCCacheEntry* dcCacheEntry2 = FindDCInCache(dcCacheEntry1, GetHDC()); + dc_buffer = (HDC) dcCacheEntry2->m_dc; + + wxDCCacheEntry* bitmapCacheEntry = FindBitmapInCache(GetHDC(), + width, height); + + buffer_bmap = (HBITMAP) bitmapCacheEntry->m_bitmap; +#else // !wxUSE_DC_CACHEING // create a temp buffer bitmap and DCs to access it and the mask - HDC dc_mask = ::CreateCompatibleDC(GetHdcOf(*source)); - HDC dc_buffer = ::CreateCompatibleDC(GetHdc()); - HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height); - ::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap()); - ::SelectObject(dc_buffer, buffer_bmap); + dc_mask = ::CreateCompatibleDC(GetHdcOf(*source)); + dc_buffer = ::CreateCompatibleDC(GetHdc()); + buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height); +#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, (int)width, (int)height, @@ -1544,7 +1856,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255)); COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0)); if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height, - dc_mask, xsrc, ysrc, SRCAND) ) + dc_mask, xsrcMask, ysrcMask, SRCAND) ) { wxLogLastError(wxT("BitBlt")); } @@ -1553,7 +1865,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, ::SetBkColor(GetHdc(), RGB(0, 0, 0)); ::SetTextColor(GetHdc(), RGB(255, 255, 255)); if ( !::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height, - dc_mask, xsrc, ysrc, SRCAND) ) + dc_mask, xsrcMask, ysrcMask, SRCAND) ) { wxLogLastError(wxT("BitBlt")); } @@ -1570,11 +1882,16 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } // tidy up temporary DCs and bitmap - ::SelectObject(dc_mask, 0); - ::DeleteDC(dc_mask); - ::SelectObject(dc_buffer, 0); - ::DeleteDC(dc_buffer); - ::DeleteObject(buffer_bmap); + ::SelectObject(dc_mask, hOldMaskBitmap); + ::SelectObject(dc_buffer, hOldBufferBitmap); + +#if !wxUSE_DC_CACHEING + { + ::DeleteDC(dc_mask); + ::DeleteDC(dc_buffer); + ::DeleteObject(buffer_bmap); + } +#endif } } else // no mask, just BitBlt() it @@ -1595,18 +1912,52 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, void wxDC::DoGetSize(int *w, int *h) const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES); if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES); } void wxDC::DoGetSizeMM(int *w, int *h) const { - if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE); - if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE); +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + + // 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, _T("0 width device?") ); + + *w = (wPixels * ::GetDeviceCaps(GetHdc(), HORZSIZE)) / wTotal; + } + + if ( h ) + { + int hTotal = ::GetDeviceCaps(GetHdc(), VERTRES); + + wxCHECK_RET( hTotal, _T("0 height device?") ); + + *h = (hPixels * ::GetDeviceCaps(GetHdc(), VERTSIZE)) / hTotal; + } } wxSize wxDC::GetPPI() const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return wxSize(); +#endif + int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); @@ -1616,6 +1967,10 @@ wxSize wxDC::GetPPI() const // For use by wxWindows only, unless custom units are required. void wxDC::SetLogicalScale(double x, double y) { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + m_logicalScaleX = x; m_logicalScaleY = y; } @@ -1625,6 +1980,10 @@ void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y, float *descent, float *externalLeading, wxFont *theFont, bool use16bit) const { +#ifdef __WXMICROWIN__ + if (!GetHDC()) return; +#endif + wxCoord x1, y1, descent1, externalLeading1; GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit); *x = x1; *y = y1; @@ -1635,4 +1994,141 @@ void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y, } #endif +#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 + */ + +wxList wxDC::sm_bitmapCache; +wxList wxDC::sm_dcCache; + +wxDCCacheEntry::wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth) +{ + m_bitmap = hBitmap; + m_dc = 0; + m_width = w; + m_height = h; + m_depth = depth; +} + +wxDCCacheEntry::wxDCCacheEntry(WXHDC hDC, int depth) +{ + m_bitmap = 0; + m_dc = hDC; + m_width = 0; + m_height = 0; + m_depth = depth; +} + +wxDCCacheEntry::~wxDCCacheEntry() +{ + if (m_bitmap) + ::DeleteObject((HBITMAP) m_bitmap); + if (m_dc) + ::DeleteDC((HDC) m_dc); +} + +wxDCCacheEntry* wxDC::FindBitmapInCache(WXHDC dc, int w, int h) +{ + int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL); + wxNode* node = sm_bitmapCache.First(); + while (node) + { + wxDCCacheEntry* entry = (wxDCCacheEntry*) node->Data(); + + 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; + } + + node = node->Next(); + } + 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; +} + +wxDCCacheEntry* wxDC::FindDCInCache(wxDCCacheEntry* notThis, WXHDC dc) +{ + int depth = ::GetDeviceCaps((HDC) dc, PLANES) * ::GetDeviceCaps((HDC) dc, BITSPIXEL); + wxNode* node = sm_dcCache.First(); + while (node) + { + wxDCCacheEntry* entry = (wxDCCacheEntry*) node->Data(); + + // Don't return the same one as we already have + if (!notThis || (notThis != entry)) + { + if (entry->m_depth == depth) + { + return entry; + } + } + + node = node->Next(); + } + WXHDC hDC = (WXHDC) ::CreateCompatibleDC((HDC) dc); + if ( !hDC) + { + wxLogLastError(wxT("CreateCompatibleDC")); + } + wxDCCacheEntry* entry = new wxDCCacheEntry(hDC, depth); + AddToDCCache(entry); + return entry; +} + +void wxDC::AddToBitmapCache(wxDCCacheEntry* entry) +{ + sm_bitmapCache.Append(entry); +} + +void wxDC::AddToDCCache(wxDCCacheEntry* entry) +{ + sm_dcCache.Append(entry); +} + +void wxDC::ClearCache() +{ + sm_bitmapCache.DeleteContents(TRUE); + sm_bitmapCache.Clear(); + sm_bitmapCache.DeleteContents(FALSE); + sm_dcCache.DeleteContents(TRUE); + sm_dcCache.Clear(); + sm_dcCache.DeleteContents(FALSE); +} + +// Clean up cache at app exit +class wxDCModule : public wxModule +{ +public: + virtual bool OnInit() { return TRUE; } + virtual void OnExit() { wxDC::ClearCache(); } + +private: + DECLARE_DYNAMIC_CLASS(wxDCModule) +}; + +IMPLEMENT_DYNAMIC_CLASS(wxDCModule, wxModule) + +#endif + // wxUSE_DC_CACHEING