+ #include "wx/msw/wrapcdlg.h"
+ #include "wx/image.h"
+ #include "wx/window.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/msw/dc.h"
+#include "wx/sysopt.h"
+#include "wx/dynlib.h"
+
+#ifdef wxHAS_RAW_BITMAP
+ #include "wx/rawbmp.h"
+#endif
+
+#include <string.h>
+
+#include "wx/msw/private/dc.h"
+#include "wx/private/textmeasure.h"
+
+using namespace wxMSWImpl;
+
+#ifndef AC_SRC_ALPHA
+ #define AC_SRC_ALPHA 1
+#endif
+
+#ifndef LAYOUT_RTL
+ #define LAYOUT_RTL 1
+#endif
+
+/* Quaternary raster codes */
+#ifndef MAKEROP4
+#define MAKEROP4(fore,back) (DWORD)((((back) << 8) & 0xFF000000) | (fore))
+#endif
+
+// apparently with MicroWindows it is possible that HDC is 0 so we have to
+// check for this ourselves
+#ifdef __WXMICROWIN__
+ #define WXMICROWIN_CHECK_HDC if ( !GetHDC() ) return;
+ #define WXMICROWIN_CHECK_HDC_RET(x) if ( !GetHDC() ) return x;
+#else
+ #define WXMICROWIN_CHECK_HDC
+ #define WXMICROWIN_CHECK_HDC_RET(x)
+#endif
+
+IMPLEMENT_ABSTRACT_CLASS(wxMSWDCImpl, wxDCImpl)
+
+// ---------------------------------------------------------------------------
+// constants
+// ---------------------------------------------------------------------------
+
+// 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
+
+// ----------------------------------------------------------------------------
+// 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.
+ */
+
+#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
+// ---------------------------------------------------------------------------
+
+// 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
+
+namespace wxMSW
+{
+
+// Wrappers for the dynamically loaded {Set,Get}Layout() functions. They work
+// in exactly the same way as the standard functions and return GDI_ERROR if
+// they're not actually available.
+DWORD GetLayout(HDC hdc);
+DWORD SetLayout(HDC hdc, DWORD dwLayout);
+
+// Create a compatible HDC and copy the layout of the source DC to it. This is
+// necessary in order to draw bitmaps (which are usually blitted from a
+// temporary compatible memory DC to the real target DC) using the same layout.
+HDC CreateCompatibleDCWithLayout(HDC hdc);
+
+} // namespace wxMSW
+
+// ----------------------------------------------------------------------------
+// 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
+// ===========================================================================
+
+// ----------------------------------------------------------------------------
+// wxBrushAttrsSetter
+// ----------------------------------------------------------------------------
+
+wxBrushAttrsSetter::wxBrushAttrsSetter(wxMSWDCImpl& dc)
+ : wxBkModeChanger(GetHdcOf(dc)),
+ wxTextColoursChanger(GetHdcOf(dc))
+{
+ 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());
+
+ wxBkModeChanger::Change(dc.GetBackgroundMode());
+ }
+}
+
+// ----------------------------------------------------------------------------
+// wxDC MSW-specific methods
+// ----------------------------------------------------------------------------
+
+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;
+}
+
+wxMSWDCImpl::~wxMSWDCImpl()
+{
+ if ( m_hDC != 0 )
+ {
+ SelectOldObjects(m_hDC);
+
+ // 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
+ {
+ // 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 wxMSWDCImpl::SelectOldObjects(WXHDC dc)
+{
+ if (dc)
+ {
+ if (m_oldBitmap)
+ {
+ ::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
+ if (m_selectedBitmap.IsOk())
+ {
+ m_selectedBitmap.SetSelectedInto(NULL);
+ }
+ }
+ m_oldBitmap = 0;
+ if (m_oldPen)
+ {
+ ::SelectObject((HDC) dc, (HPEN) m_oldPen);
+ }
+ m_oldPen = 0;
+ if (m_oldBrush)
+ {
+ ::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
+ }
+ m_oldBrush = 0;
+ if (m_oldFont)
+ {
+ ::SelectObject((HDC) dc, (HFONT) m_oldFont);
+ }
+ m_oldFont = 0;
+
+#if wxUSE_PALETTE
+ if (m_oldPalette)
+ {
+ ::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;
+}
+
+// ---------------------------------------------------------------------------
+// clipping
+// ---------------------------------------------------------------------------
+
+void wxMSWDCImpl::UpdateClipBox()
+{
+ WXMICROWIN_CHECK_HDC
+
+ RECT rect;
+ ::GetClipBox(GetHdc(), &rect);
+
+ 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
+wxMSWDCImpl::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 )
+ {
+ wxMSWDCImpl *self = wxConstCast(this, wxMSWDCImpl);
+ self->UpdateClipBox();
+
+ if ( !m_clipX1 && !m_clipX2 )
+ self->m_clipping = false;
+ }
+
+ wxDCImpl::DoGetClippingBox(x, y, w, h);
+}
+
+// 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 wxMSWDCImpl::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
+{
+ // 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
+ {
+ SetClippingHrgn((WXHRGN)hrgn);
+
+ ::DeleteObject(hrgn);
+ }
+}
+
+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.
+ HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
+ ::SelectClipRgn(GetHdc(), rgn);
+ ::DeleteObject(rgn);
+#endif
+ }
+
+ wxDCImpl::DestroyClippingRegion();
+}
+
+// ---------------------------------------------------------------------------
+// query capabilities
+// ---------------------------------------------------------------------------
+
+bool wxMSWDCImpl::CanDrawBitmap() const
+{
+ return true;
+}
+
+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 wxMSWDCImpl::GetDepth() const
+{
+ WXMICROWIN_CHECK_HDC_RET(16)
+
+ return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
+}
+
+// ---------------------------------------------------------------------------
+// drawing
+// ---------------------------------------------------------------------------
+
+void wxMSWDCImpl::Clear()
+{
+ WXMICROWIN_CHECK_HDC
+
+ RECT rect;
+ if (m_window)
+ {
+ GetClientRect((HWND) m_window->GetHWND(), &rect);
+ }
+ else
+ {
+ // 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);
+
+ RealizeScaleAndOrigin();
+}
+
+bool wxMSWDCImpl::DoFloodFill(wxCoord WXUNUSED_IN_WINCE(x),
+ wxCoord WXUNUSED_IN_WINCE(y),
+ const wxColour& WXUNUSED_IN_WINCE(col),
+ wxFloodFillStyle WXUNUSED_IN_WINCE(style))
+{
+#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 wxMSWDCImpl::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
+{
+ 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));
+
+ wxRGBToColour(*col, pixelcolor);
+
+ return true;
+}
+
+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;
+
+ 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 wxMSWDCImpl::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
+{
+ WXMICROWIN_CHECK_HDC
+
+ wxDrawLine(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), XLOG2DEV(x2), YLOG2DEV(y2));
+
+ CalcBoundingBox(x1, y1);
+ CalcBoundingBox(x2, y2);
+}
+
+// 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;
+ 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 )
+ {
+ GetOwner()->DrawEllipse(xc - r, yc - r, 2*r, 2*r);
+ return;
+ }
+
+ wxCoord xx1 = XLOG2DEV(x1);
+ wxCoord yy1 = YLOG2DEV(y1);
+ wxCoord xx2 = XLOG2DEV(x2);
+ wxCoord yy2 = YLOG2DEV(y2);
+ wxCoord xxc = XLOG2DEV(xc);
+ wxCoord yyc = YLOG2DEV(yc);
+ dx = xxc - xx1;
+ dy = yyc - yy1;
+ wxCoord ray = (wxCoord)sqrt(dx*dx + dy*dy);
+
+ wxCoord xxx1 = (wxCoord) (xxc-ray);
+ wxCoord yyy1 = (wxCoord) (yyc-ray);
+ wxCoord xxx2 = (wxCoord) (xxc+ray);
+ wxCoord yyy2 = (wxCoord) (yyc+ray);
+
+ 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);
+ }
+ else
+ {
+ 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(x1, y1);
+ CalcBoundingBox(x2, y2);
+#endif // Microwin/Normal
+}
+
+void wxMSWDCImpl::DoDrawPoint(wxCoord x, wxCoord y)
+{
+ WXMICROWIN_CHECK_HDC
+
+ COLORREF color = 0x00ffffff;
+ if (m_pen.IsOk())
+ {
+ color = m_pen.GetColour().GetPixel();
+ }
+
+ SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color);
+
+ CalcBoundingBox(x, y);
+}
+
+void wxMSWDCImpl::DoDrawPolygon(int n,
+ const 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)
+ {
+ POINT *cpoints = new POINT[n];
+ int i;
+ for (i = 0; i < n; 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)Polygon(GetHdc(), cpoints, n);
+#ifndef __WXWINCE__
+ SetPolyFillMode(GetHdc(),prev);
+#endif
+ delete[] cpoints;
+ }
+ else
+ {
+ int i;
+ 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,
+ const int count[],
+ const 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 wxMSWDCImpl::DoDrawLines(int n, const wxPoint points[], wxCoord xoffset, wxCoord yoffset)
+{
+ WXMICROWIN_CHECK_HDC
+
+ // Do things less efficiently if we have offsets
+ if (xoffset != 0 || yoffset != 0)
+ {
+ POINT *cpoints = new POINT[n];
+ int i;
+ for (i = 0; i < n; i++)
+ {
+ cpoints[i].x = (int)(points[i].x + xoffset);
+ cpoints[i].y = (int)(points[i].y + yoffset);
+
+ CalcBoundingBox(cpoints[i].x, cpoints[i].y);
+ }
+ (void)Polyline(GetHdc(), cpoints, n);
+ delete[] cpoints;
+ }
+ else
+ {
+ int i;
+ for (i = 0; i < n; i++)
+ CalcBoundingBox(points[i].x, points[i].y);
+
+ (void)Polyline(GetHdc(), (POINT*) points, n);
+ }
+}
+
+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;
+
+ wxCoord x2dev = XLOG2DEV(x2),
+ y2dev = YLOG2DEV(y2);
+
+ // 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__
+
+ (void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), x2dev, y2dev);
+
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
+}
+
+void wxMSWDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
+{
+ WXMICROWIN_CHECK_HDC
+
+ wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
+
+ // Now, a negative radius value is interpreted to mean
+ // 'the proportion of the smallest X or Y dimension'
+
+ if (radius < 0.0)
+ {
+ 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)));
+
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
+}
+
+void wxMSWDCImpl::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
+{
+ WXMICROWIN_CHECK_HDC
+
+ wxBrushAttrsSetter cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
+
+ // +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 wxMSWDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
+{
+#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);
+ int rx2 = rx1;
+ int ry2 = ry1;
+
+ sa = DegToRad(sa);
+ ea = DegToRad(ea);
+
+ rx1 += (int)(100.0 * abs(w) * cos(sa));
+ ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa));
+ 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 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);
+ }
+ else
+ {
+ (void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
+ rx1, ry1-1, rx2, ry2-1);
+ }
+
+ ::SelectObject(GetHdc(), hpenOld);
+
+ (void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
+ rx1, ry1, rx2, ry2);
+
+ CalcBoundingBox(x, y);
+ CalcBoundingBox(x2, y2);
+#endif
+}
+
+void wxMSWDCImpl::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
+{
+ 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), GetHiconOf(icon));
projects / wxWidgets.git / blobdiff