X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b9b1f368fe78f4f52dd355faf9f7c0672659697d..ec5f0c24123fe801fb82b69771c171c0b9d064fc:/src/msw/dc.cpp diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp index 0dc13d5a1f..a56e537832 100644 --- a/src/msw/dc.cpp +++ b/src/msw/dc.cpp @@ -29,6 +29,7 @@ #endif #ifndef WX_PRECOMP + #include "wx/image.h" #include "wx/window.h" #include "wx/dc.h" #include "wx/utils.h" @@ -41,6 +42,7 @@ #endif #include "wx/msw/private.h" // needs to be before #include +#include "wx/msw/missing.h" // needs to be before #include #include "wx/sysopt.h" #include "wx/dcprint.h" @@ -52,7 +54,6 @@ #endif #include -#include #if wxUSE_COMMON_DIALOGS && !defined(__WXMICROWIN__) #include @@ -71,6 +72,16 @@ #define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore)) #endif +// apparently with MicroWindows it is possible that HDC is 0 so we have to +// check for this ourselves +#ifdef __WXMICROWIN__ + #define WXMICROWIN_CHECK_HDC if ( !GetHDC() ) return; + #define WXMICROWIN_CHECK_HDC_RET(x) if ( !GetHDC() ) return x; +#else + #define WXMICROWIN_CHECK_HDC + #define WXMICROWIN_CHECK_HDC_RET(x) +#endif + IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase) // --------------------------------------------------------------------------- @@ -82,11 +93,6 @@ static const int VIEWPORT_EXTENT = 1000; static const int MM_POINTS = 9; static const int MM_METRIC = 10; -// usually this is defined in math.h -#ifndef M_PI - static const double M_PI = 3.14159265358979323846; -#endif // M_PI - // ROPs which don't have standard names (see "Ternary Raster Operations" in the // MSDN docs for how this and other numbers in wxDC::Blit() are obtained) #define DSTCOPY 0x00AA0029 // a.k.a. NOP operation @@ -102,13 +108,17 @@ static const int MM_METRIC = 10; coordinates used. */ -// logical to device -#define XLOG2DEV(x) (x) -#define YLOG2DEV(y) (y) - -// device to logical -#define XDEV2LOG(x) (x) -#define YDEV2LOG(y) (y) +#ifdef __WXWINCE__ + #define XLOG2DEV(x) ((x-m_logicalOriginX)*m_signX+m_deviceOriginX) + #define YLOG2DEV(y) ((y-m_logicalOriginY)*m_signY+m_deviceOriginY) + #define XDEV2LOG(x) ((x-m_deviceOriginX)*m_signX+m_logicalOriginX) + #define YDEV2LOG(y) ((y-m_deviceOriginY)*m_signY+m_logicalOriginY) +#else + #define XLOG2DEV(x) (x) + #define YLOG2DEV(y) (y) + #define XDEV2LOG(x) (x) + #define YDEV2LOG(y) (y) +#endif // --------------------------------------------------------------------------- // private functions @@ -173,6 +183,8 @@ public: m_modeOld = ::SetStretchBltMode(m_hdc, mode); if ( !m_modeOld ) wxLogLastError(_T("SetStretchBltMode")); +#else + wxUnusedVar(mode); #endif } @@ -209,7 +221,7 @@ wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc) m_colFgOld = ::GetTextColor(hdc); m_colBgOld = ::GetBkColor(hdc); - // note that Windows convention is opposite to wxWindows one, this is + // note that Windows convention is opposite to wxWidgets one, this is // why text colour becomes the background one and vice versa const wxColour& colFg = dc.GetTextForeground(); if ( colFg.Ok() ) @@ -228,12 +240,12 @@ wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc) : OPAQUE); // flag which telsl us to undo changes in the dtor - m_changed = TRUE; + m_changed = true; } else { // nothing done, nothing to undo - m_changed = FALSE; + m_changed = false; } } @@ -267,7 +279,7 @@ wxDC::wxDC() m_oldPalette = 0; #endif // wxUSE_PALETTE - m_bOwnsDC = FALSE; + m_bOwnsDC = false; m_hDC = 0; } @@ -357,9 +369,7 @@ void wxDC::SelectOldObjects(WXHDC dc) void wxDC::UpdateClipBox() { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC RECT rect; ::GetClipBox(GetHdc(), &rect); @@ -370,19 +380,35 @@ void wxDC::UpdateClipBox() m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom); } +void +wxDC::DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const +{ + // check if we should try to retrieve the clipping region possibly not set + // by our SetClippingRegion() but preset by Windows:this can only happen + // when we're associated with an existing HDC usign SetHDC(), see there + if ( m_clipping && !m_clipX1 && !m_clipX2 ) + { + wxDC *self = wxConstCast(this, wxDC); + self->UpdateClipBox(); + + if ( !m_clipX1 && !m_clipX2 ) + self->m_clipping = false; + } + + wxDCBase::DoGetClippingBox(x, y, w, h); +} + // common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion() void wxDC::SetClippingHrgn(WXHRGN hrgn) { wxCHECK_RET( hrgn, wxT("invalid clipping region") ); -#ifdef __WXMICROWIN__ - if (!GetHdc()) return; -#endif // __WXMICROWIN__ + WXMICROWIN_CHECK_HDC // note that we combine the new clipping region with the existing one: this // is compatible with what the other ports do and is the documented // behaviour now (starting with 2.3.3) -#if defined(__WIN16__) || defined(__WXWINCE__) +#if defined(__WXWINCE__) RECT rectClip; if ( !::GetClipBox(GetHdc(), &rectClip) ) return; @@ -398,16 +424,16 @@ void wxDC::SetClippingHrgn(WXHRGN hrgn) ::DeleteObject(hrgnClipOld); ::DeleteObject(hrgnDest); -#else // Win32 +#else // !WinCE if ( ::ExtSelectClipRgn(GetHdc(), (HRGN)hrgn, RGN_AND) == ERROR ) { wxLogLastError(_T("ExtSelectClipRgn")); return; } -#endif // Win16/32 +#endif // WinCE/!WinCE - m_clipping = TRUE; + m_clipping = true; UpdateClipBox(); } @@ -441,9 +467,7 @@ void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) void wxDC::DestroyClippingRegion() { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC if (m_clipping && m_hDC) { @@ -456,7 +480,7 @@ void wxDC::DestroyClippingRegion() ::DeleteObject(rgn); } - m_clipping = FALSE; + wxDCBase::DestroyClippingRegion(); } // --------------------------------------------------------------------------- @@ -465,14 +489,14 @@ void wxDC::DestroyClippingRegion() bool wxDC::CanDrawBitmap() const { - return TRUE; + return true; } bool wxDC::CanGetTextExtent() const { #ifdef __WXMICROWIN__ // TODO Extend MicroWindows' GetDeviceCaps function - return TRUE; + return true; #else // What sort of display is it? int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY); @@ -483,9 +507,7 @@ bool wxDC::CanGetTextExtent() const int wxDC::GetDepth() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return 16; -#endif + WXMICROWIN_CHECK_HDC_RET(16) return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL); } @@ -496,9 +518,7 @@ int wxDC::GetDepth() const void wxDC::Clear() { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC RECT rect; if ( m_canvas ) @@ -527,10 +547,10 @@ void wxDC::Clear() ::FillRect(GetHdc(), &rect, brush); ::DeleteObject(brush); +#ifndef __WXWINCE__ int width = DeviceToLogicalXRel(VIEWPORT_EXTENT)*m_signX, height = DeviceToLogicalYRel(VIEWPORT_EXTENT)*m_signY; -#ifndef __WXWINCE__ ::SetMapMode(GetHdc(), MM_ANISOTROPIC); ::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL); @@ -543,12 +563,14 @@ void wxDC::Clear() bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) { #ifdef __WXWINCE__ - return FALSE; + wxUnusedVar(x); + wxUnusedVar(y); + wxUnusedVar(col); + wxUnusedVar(style); + return false; #else -#ifdef __WXMICROWIN__ - if (!GetHDC()) return FALSE; -#endif + WXMICROWIN_CHECK_HDC_RET(false) bool success = (0 != ::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), col.GetPixel(), @@ -579,25 +601,21 @@ bool wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style) bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return FALSE; -#endif + WXMICROWIN_CHECK_HDC_RET(false) - wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") ); + wxCHECK_MSG( col, false, _T("NULL colour parameter in wxDC::GetPixel") ); // get the color of the pixel COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)); wxRGBToColour(*col, pixelcolor); - return TRUE; + return true; } void wxDC::DoCrossHair(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxCoord x1 = x-VIEWPORT_EXTENT; wxCoord y1 = y-VIEWPORT_EXTENT; @@ -613,9 +631,7 @@ void wxDC::DoCrossHair(wxCoord x, wxCoord y) void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2)); @@ -638,9 +654,7 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, DoDrawEllipticArcRot( xc-r, yc-r, 2*r, 2*r, sa, ea ); #else -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -691,9 +705,7 @@ void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxCoord x2 = x1 + width, y2 = y1 + height; @@ -710,8 +722,8 @@ void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, #else DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK); #endif -#else // Win16 - // In WIN16, draw a cross +#else // Symantec-MicroWin + // draw a cross HPEN blackPen = ::CreatePen(PS_SOLID, 1, RGB(0, 0, 0)); HPEN whiteBrush = (HPEN)::GetStockObject(WHITE_BRUSH); HPEN hPenOld = (HPEN)::SelectObject(GetHdc(), blackPen); @@ -725,7 +737,7 @@ void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, ::SelectObject(GetHdc(), hPenOld); ::SelectObject(GetHdc(), hBrushOld); ::DeleteObject(blackPen); -#endif // Win32/16 +#endif // Win32/Symantec-MicroWin CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); @@ -733,9 +745,7 @@ void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1, void wxDC::DoDrawPoint(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC COLORREF color = 0x00ffffff; if (m_pen.Ok()) @@ -750,9 +760,7 @@ 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 + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -770,6 +778,8 @@ void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffs } #ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); +#else + wxUnusedVar(fillStyle); #endif (void)Polygon(GetHdc(), cpoints, n); #ifndef __WXWINCE__ @@ -795,20 +805,21 @@ void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffs void wxDC::DoDrawPolyPolygon(int n, - int start[], + int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, int fillStyle) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif +#ifdef __WXWINCE__ + wxDCBase::DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); +#else + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling int i, cnt; for (i = cnt = 0; i < n; i++) - cnt += start[i]; + cnt += count[i]; // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) @@ -821,9 +832,13 @@ wxDC::DoDrawPolyPolygon(int n, CalcBoundingBox(cpoints[i].x, cpoints[i].y); } +#ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); - (void)PolyPolygon(GetHdc(), cpoints, start, n); +#endif + (void)PolyPolygon(GetHdc(), cpoints, count, n); +#ifndef __WXWINCE__ SetPolyFillMode(GetHdc(),prev); +#endif delete[] cpoints; } else @@ -831,17 +846,21 @@ wxDC::DoDrawPolyPolygon(int n, for (i = 0; i < cnt; i++) CalcBoundingBox(points[i].x, points[i].y); +#ifndef __WXWINCE__ int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING); - (void)PolyPolygon(GetHdc(), (POINT*) points, start, n); +#endif + (void)PolyPolygon(GetHdc(), (POINT*) points, count, n); +#ifndef __WXWINCE__ SetPolyFillMode(GetHdc(),prev); +#endif } +#endif + // __WXWINCE__ } void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // Do things less efficiently if we have offsets if (xoffset != 0 || yoffset != 0) @@ -870,9 +889,7 @@ void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -911,9 +928,7 @@ void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -947,9 +962,7 @@ void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord h void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -969,9 +982,7 @@ void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,d DoDrawEllipticArcRot( x, y, w, h, sa, ea ); #else -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling @@ -1017,9 +1028,7 @@ 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 + WXMICROWIN_CHECK_HDC wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") ); @@ -1035,9 +1044,7 @@ void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask ) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") ); @@ -1069,7 +1076,7 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter - useMask = FALSE; + useMask = false; } } if ( useMask ) @@ -1078,9 +1085,9 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask // use MaskBlt() with ROP which doesn't do anything to dst in the mask // points // On some systems, MaskBlt succeeds yet is much much slower - // than the wxWindows fall-back implementation. So we need + // than the wxWidgets fall-back implementation. So we need // to be able to switch this on and off at runtime. - bool ok = FALSE; + bool ok = false; #if wxUSE_SYSTEM_OPTIONS if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0) #endif @@ -1170,9 +1177,7 @@ void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC DrawAnyText(text, x, y); @@ -1186,9 +1191,7 @@ void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // prepare for drawing the text if ( m_textForegroundColour.Ok() ) @@ -1230,9 +1233,7 @@ void wxDC::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // we test that we have some font because otherwise we should still use the // "else" part below to avoid that DrawRotatedText(angle = 180) and @@ -1286,13 +1287,13 @@ void wxDC::DoDrawRotatedText(const wxString& text, // "upper left" and "upper right" CalcBoundingBox(x, y); - CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(h*sin(rad))); + CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad))); // "bottom left" and "bottom right" x += (wxCoord)(h*sin(rad)); y += (wxCoord)(h*cos(rad)); CalcBoundingBox(x, y); - CalcBoundingBox(x + wxCoord(h*sin(rad)), y + wxCoord(h*cos(rad))); + CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad))); } #endif } @@ -1305,9 +1306,7 @@ void wxDC::DoDrawRotatedText(const wxString& text, void wxDC::DoSelectPalette(bool realize) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // Set the old object temporarily, in case the assignment deletes an object // that's not yet selected out. @@ -1321,7 +1320,7 @@ void wxDC::DoSelectPalette(bool realize) { HPALETTE oldPal = ::SelectPalette(GetHdc(), GetHpaletteOf(m_palette), - FALSE); + false); if (!m_oldPalette) m_oldPalette = (WXHPALETTE) oldPal; @@ -1335,7 +1334,7 @@ void wxDC::SetPalette(const wxPalette& palette) if ( palette.Ok() ) { m_palette = palette; - DoSelectPalette(TRUE); + DoSelectPalette(true); } } @@ -1360,130 +1359,143 @@ void wxDC::InitializePalette() #endif // wxUSE_PALETTE -void wxDC::SetFont(const wxFont& the_font) -{ -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif +// SetFont/Pen/Brush() really ask to be implemented as a single template +// function... but doing it is not worth breaking OpenWatcom build - // Set the old object temporarily, in case the assignment deletes an object - // that's not yet selected out. - if (m_oldFont) - { - ::SelectObject(GetHdc(), (HFONT) m_oldFont); - m_oldFont = 0; - } +void wxDC::SetFont(const wxFont& font) +{ + WXMICROWIN_CHECK_HDC - m_font = the_font; + if ( font == m_font ) + return; - if (!the_font.Ok()) + if ( font.Ok() ) { - if (m_oldFont) - ::SelectObject(GetHdc(), (HFONT) m_oldFont); - m_oldFont = 0; - } + HGDIOBJ hfont = ::SelectObject(GetHdc(), GetHfontOf(font)); + if ( hfont == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(font)")); + } + else // selected ok + { + if ( !m_oldFont ) + m_oldFont = (WXHPEN)hfont; - if (m_font.Ok() && m_font.GetResourceHandle()) + m_font = font; + } + } + else // invalid font, reset the current font { - HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle()); - if (f == (HFONT) NULL) + if ( m_oldFont ) { - wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont.")); + if ( ::SelectObject(GetHdc(), (HPEN) m_oldFont) == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(old font)")); + } + + m_oldFont = 0; } - if (!m_oldFont) - m_oldFont = (WXHFONT) f; + + m_font = wxNullFont; } } void wxDC::SetPen(const wxPen& pen) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC - // Set the old object temporarily, in case the assignment deletes an object - // that's not yet selected out. - if (m_oldPen) - { - ::SelectObject(GetHdc(), (HPEN) m_oldPen); - m_oldPen = 0; - } - - m_pen = pen; + if ( pen == m_pen ) + return; - if (!m_pen.Ok()) + if ( pen.Ok() ) { - if (m_oldPen) - ::SelectObject(GetHdc(), (HPEN) m_oldPen); - m_oldPen = 0; - } + HGDIOBJ hpen = ::SelectObject(GetHdc(), GetHpenOf(pen)); + if ( hpen == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(pen)")); + } + else // selected ok + { + if ( !m_oldPen ) + m_oldPen = (WXHPEN)hpen; - if (m_pen.Ok()) + m_pen = pen; + } + } + else // invalid pen, reset the current pen { - if (m_pen.GetResourceHandle()) + if ( m_oldPen ) { - HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle()); - if (!m_oldPen) - m_oldPen = (WXHPEN) p; + if ( ::SelectObject(GetHdc(), (HPEN) m_oldPen) == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(old pen)")); + } + + m_oldPen = 0; } + + m_pen = wxNullPen; } } void wxDC::SetBrush(const wxBrush& brush) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC - // Set the old object temporarily, in case the assignment deletes an object - // that's not yet selected out. - if (m_oldBrush) - { - ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); - m_oldBrush = 0; - } - - m_brush = brush; - - if (!m_brush.Ok()) - { - if (m_oldBrush) - ::SelectObject(GetHdc(), (HBRUSH) m_oldBrush); - m_oldBrush = 0; - } + if ( brush == m_brush ) + return; - if (m_brush.Ok()) + if ( brush.Ok() ) { - // to make sure the brush is alligned with the logical coordinates - wxBitmap *stipple = m_brush.GetStipple(); + // we must make sure the brush is aligned with the logical coordinates + // before selecting it + wxBitmap *stipple = brush.GetStipple(); if ( stipple && stipple->Ok() ) { -#ifdef __WIN32__ - ::SetBrushOrgEx(GetHdc(), - m_deviceOriginX % stipple->GetWidth(), - m_deviceOriginY % stipple->GetHeight(), - NULL); // don't need previous brush origin -#else - ::SetBrushOrg(GetHdc(), - m_deviceOriginX % stipple->GetWidth(), - m_deviceOriginY % stipple->GetHeight()); -#endif + if ( !::SetBrushOrgEx + ( + GetHdc(), + m_deviceOriginX % stipple->GetWidth(), + m_deviceOriginY % stipple->GetHeight(), + NULL // [out] previous brush origin + ) ) + { + wxLogLastError(_T("SetBrushOrgEx()")); + } } - if ( m_brush.GetResourceHandle() ) + HGDIOBJ hbrush = ::SelectObject(GetHdc(), GetHbrushOf(brush)); + if ( hbrush == HGDI_ERROR ) { - HBRUSH b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle()); - if (!m_oldBrush) - m_oldBrush = (WXHBRUSH) b; + wxLogLastError(_T("SelectObject(brush)")); + } + else // selected ok + { + if ( !m_oldBrush ) + m_oldBrush = (WXHPEN)hbrush; + + m_brush = brush; } } + else // invalid brush, reset the current brush + { + if ( m_oldBrush ) + { + if ( ::SelectObject(GetHdc(), (HPEN) m_oldBrush) == HGDI_ERROR ) + { + wxLogLastError(_T("SelectObject(old brush)")); + } + + m_oldBrush = 0; + } + + m_brush = wxNullBrush; + } } void wxDC::SetBackground(const wxBrush& brush) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_backgroundBrush = brush; @@ -1495,9 +1507,7 @@ void wxDC::SetBackground(const wxBrush& brush) void wxDC::SetBackgroundMode(int mode) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_backgroundMode = mode; @@ -1507,9 +1517,7 @@ void wxDC::SetBackgroundMode(int mode) void wxDC::SetLogicalFunction(int function) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_logicalFunction = function; @@ -1552,8 +1560,8 @@ void wxDC::SetRop(WXHDC dc) bool wxDC::StartDoc(const wxString& WXUNUSED(message)) { - // We might be previewing, so return TRUE to let it continue. - return TRUE; + // We might be previewing, so return true to let it continue. + return true; } void wxDC::EndDoc() @@ -1574,9 +1582,7 @@ void wxDC::EndPage() wxCoord wxDC::GetCharHeight() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return 0; -#endif + WXMICROWIN_CHECK_HDC_RET(0) TEXTMETRIC lpTextMetric; @@ -1587,9 +1593,7 @@ wxCoord wxDC::GetCharHeight() const wxCoord wxDC::GetCharWidth() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return 0; -#endif + WXMICROWIN_CHECK_HDC_RET(0) TEXTMETRIC lpTextMetric; @@ -1646,11 +1650,52 @@ void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, } } + +// Each element of the array will be the width of the string up to and +// including the coresoponding character in text. + +bool wxDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const +{ + static int maxLenText = -1; + static int maxWidth = -1; + int fit = 0; + SIZE sz = {0,0}; + int stlen = text.Length(); + + if (maxLenText == -1) + { + // Win9x and WinNT+ have different limits + int version = wxGetOsVersion(); + maxLenText = version == wxWINDOWS_NT ? 65535 : 8192; + maxWidth = version == wxWINDOWS_NT ? INT_MAX : 32767; + } + + widths.Empty(); + widths.Add(0, stlen); // fill the array with zeros + + if (!::GetTextExtentExPoint(GetHdc(), + text.c_str(), // string to check + wxMin(stlen, maxLenText), + maxWidth, + &fit, // [out] count of chars + // that will fit + &widths[0], // array to fill + &sz)) + { + // API failed + wxLogLastError(wxT("GetTextExtentExPoint")); + return false; + } + + return true; +} + + + + void wxDC::SetMapMode(int mode) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_mappingMode = mode; @@ -1721,26 +1766,20 @@ void wxDC::SetMapMode(int mode) void wxDC::SetUserScale(double x, double y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_userScaleX && y == m_userScaleY ) return; m_userScaleX = x; m_userScaleY = y; - SetMapMode(m_mappingMode); -#endif + this->SetMapMode(m_mappingMode); } void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC #ifndef __WXWINCE__ int signX = xLeftRight ? 1 : -1, @@ -1753,56 +1792,53 @@ void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp) SetMapMode(m_mappingMode); } +#else + wxUnusedVar(xLeftRight); + wxUnusedVar(yBottomUp); #endif } void wxDC::SetSystemScale(double x, double y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_scaleX && y == m_scaleY ) return; m_scaleX = x; m_scaleY = y; +#ifndef __WXWINCE__ SetMapMode(m_mappingMode); #endif } void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_logicalOriginX && y == m_logicalOriginY ) return; m_logicalOriginX = x; m_logicalOriginY = y; +#ifndef __WXWINCE__ ::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL); #endif } void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC -#ifndef __WXWINCE__ if ( x == m_deviceOriginX && y == m_deviceOriginY ) return; m_deviceOriginX = x; m_deviceOriginY = y; +#ifndef __WXWINCE__ ::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL); #endif } @@ -1865,18 +1901,19 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, int rop, bool useMask, wxCoord xsrcMask, wxCoord ysrcMask) { - wxCHECK_MSG( source, FALSE, _T("wxDC::Blit(): NULL wxDC pointer") ); + wxCHECK_MSG( source, false, _T("wxDC::Blit(): NULL wxDC pointer") ); -#ifdef __WXMICROWIN__ - if (!GetHDC()) return FALSE; -#endif + WXMICROWIN_CHECK_HDC_RET(false) + // if either the source or destination has alpha channel, we must use + // AlphaBlt() as other function don't handle it correctly const wxBitmap& bmpSrc = source->m_selectedBitmap; - if ( bmpSrc.Ok() && bmpSrc.HasAlpha() ) + if ( bmpSrc.Ok() && (bmpSrc.HasAlpha() || + (m_selectedBitmap.Ok() && m_selectedBitmap.HasAlpha())) ) { if ( AlphaBlt(GetHdc(), xdest, ydest, width, height, GetHdcOf(*source), bmpSrc) ) - return TRUE; + return true; } wxMask *mask = NULL; @@ -1888,7 +1925,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, { // don't give assert here because this would break existing // programs - just silently ignore useMask parameter - useMask = FALSE; + useMask = false; } } @@ -1929,10 +1966,10 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, case wxNOR: dwRop = NOTSRCCOPY; break; default: wxFAIL_MSG( wxT("unsupported logical function") ); - return FALSE; + return false; } - bool success = FALSE; + bool success = false; if (useMask) { @@ -1943,7 +1980,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, // of the mask which is also contrary to the Windows one) // On some systems, MaskBlt succeeds yet is much much slower - // than the wxWindows fall-back implementation. So we need + // than the wxWidgets fall-back implementation. So we need // to be able to switch this on and off at runtime. #if wxUSE_SYSTEM_OPTIONS if (wxSystemOptions::GetOptionInt(wxT("no-maskblt")) == 0) @@ -2085,11 +2122,15 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, SRCCOPY ) == (int)GDI_ERROR ) { - wxLogLastError(wxT("StretchDIBits")); + // On Win9x this API fails most (all?) of the time, so + // logging it becomes quite distracting. Since it falls + // back to the code below this is not really serious, so + // don't log it. + //wxLogLastError(wxT("StretchDIBits")); } else { - success = TRUE; + success = true; } } } @@ -2115,7 +2156,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } else { - success = TRUE; + success = true; } } @@ -2135,7 +2176,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, } else { - success = TRUE; + success = true; } } } @@ -2148,9 +2189,7 @@ bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, void wxDC::DoGetSize(int *w, int *h) const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES); if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES); @@ -2158,9 +2197,7 @@ void wxDC::DoGetSize(int *w, int *h) const void wxDC::DoGetSizeMM(int *w, int *h) const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC // if we implement it in terms of DoGetSize() instead of directly using the // results returned by GetDeviceCaps(HORZ/VERTSIZE) as was done before, it @@ -2190,9 +2227,7 @@ void wxDC::DoGetSizeMM(int *w, int *h) const wxSize wxDC::GetPPI() const { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return wxSize(); -#endif + WXMICROWIN_CHECK_HDC_RET(wxSize(0,0)) int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX); int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY); @@ -2200,12 +2235,10 @@ wxSize wxDC::GetPPI() const return wxSize(x, y); } -// For use by wxWindows only, unless custom units are required. +// For use by wxWidgets only, unless custom units are required. void wxDC::SetLogicalScale(double x, double y) { -#ifdef __WXMICROWIN__ - if (!GetHDC()) return; -#endif + WXMICROWIN_CHECK_HDC m_logicalScaleX = x; m_logicalScaleY = y; @@ -2337,7 +2370,7 @@ void wxDC::ClearCache() class wxDCModule : public wxModule { public: - virtual bool OnInit() { return TRUE; } + virtual bool OnInit() { return true; } virtual void OnExit() { wxDC::ClearCache(); } private: @@ -2369,11 +2402,11 @@ static bool AlphaBlt(HDC hdcDst, // bitmaps can be drawn only from GUI thread so there is no need to // protect this static variable from multiple threads - static bool s_triedToLoad = FALSE; + static bool s_triedToLoad = false; static AlphaBlend_t pfnAlphaBlend = NULL; if ( !s_triedToLoad ) { - s_triedToLoad = TRUE; + s_triedToLoad = true; // don't give errors about the DLL being unavailable, we're // prepared to handle this @@ -2406,7 +2439,7 @@ static bool AlphaBlt(HDC hdcDst, bf) ) { // skip wxAlphaBlend() call below - return TRUE; + return true; } wxLogLastError(_T("AlphaBlend")); @@ -2418,11 +2451,12 @@ static bool AlphaBlt(HDC hdcDst, #ifdef wxHAVE_RAW_BITMAP wxAlphaBlend(hdcDst, x, y, width, height, bmp); - return TRUE; + return true; #else // !wxHAVE_RAW_BITMAP // no wxAlphaBlend() neither, fall back to using simple BitBlt() (we lose // alpha but at least something will be shown like this) - return FALSE; + wxUnusedVar(bmp); + return false; #endif // wxHAVE_RAW_BITMAP }