const wxBitmap& bmpSrc);
#ifdef wxHAVE_RAW_BITMAP
-// our (limited) AlphaBlend() replacement
+
+// our (limited) AlphaBlend() replacement for Windows versions not providing it
static void
-wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h, int srcX, int srcY, const wxBitmap& bmp);
-#endif
+wxAlphaBlend(HDC hdcDst, int x, int y, int w, int h,
+ int srcX, int srcY, const wxBitmap& bmp);
+
+#endif // wxHAVE_RAW_BITMAP
// ----------------------------------------------------------------------------
// private classes
DECLARE_NO_COPY_CLASS(StretchBltModeChanger)
};
+// support for dynamic loading of msimg32.dll which we use for some functions
+class wxMSImg32DLL
+{
+public:
+ // return the symbol with the given name if the DLL not loaded or symbol
+ // not present
+ static void *GetSymbol(const wxChar *name)
+ {
+ wxLogNull noLog;
+
+ if ( !ms_triedToLoad )
+ {
+ ms_triedToLoad = true;
+ ms_dll.Load(_T("msimg32"));
+ }
+
+ return ms_dll.IsLoaded() ? ms_dll.GetSymbol(name) : NULL;
+ }
+
+private:
+ static wxDynamicLibrary ms_dll;
+ static bool ms_triedToLoad;
+};
+
+wxDynamicLibrary wxMSImg32DLL::ms_dll;
+bool wxMSImg32DLL::ms_triedToLoad = false;
+
+// helper macro for getting the symbols from msimg32.dll: it supposes that a
+// type "name_t" is defined and casts the returned symbol to it automatically
+#define wxMSIMG32_SYMBOL(name) (name ## _t)wxMSImg32DLL::GetSymbol(_T(#name))
+
// ===========================================================================
// implementation
// ===========================================================================
// wxDC
// ---------------------------------------------------------------------------
-// Default constructor
-wxDC::wxDC()
-{
- m_canvas = NULL;
-
- m_oldBitmap = 0;
- m_oldPen = 0;
- m_oldBrush = 0;
- m_oldFont = 0;
-#if wxUSE_PALETTE
- m_oldPalette = 0;
-#endif // wxUSE_PALETTE
-
- m_bOwnsDC = false;
- m_hDC = 0;
-}
-
wxDC::~wxDC()
{
if ( m_hDC != 0 )
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
HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
::SelectClipRgn(GetHdc(), rgn);
::DeleteObject(rgn);
+#endif
}
wxDCBase::DestroyClippingRegion();
return success;
}
-void wxDC::DoGetSize(int *w, int *h) const
+void wxDC::GetDeviceSize(int *width, int *height) const
{
WXMICROWIN_CHECK_HDC
- if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES);
- if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES);
+ if ( width )
+ *width = ::GetDeviceCaps(GetHdc(), HORZRES);
+ if ( height )
+ *height = ::GetDeviceCaps(GetHdc(), VERTRES);
}
void wxDC::DoGetSizeMM(int *w, int *h) const
HDC,int,int,int,int,
BLENDFUNCTION);
- // 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 AlphaBlend_t pfnAlphaBlend = NULL;
- if ( !s_triedToLoad )
- {
- s_triedToLoad = true;
-
- // don't give errors about the DLL being unavailable, we're
- // prepared to handle this
- wxLogNull nolog;
-
- wxDynamicLibrary dll(_T("msimg32.dll"));
- if ( dll.IsLoaded() )
- {
- pfnAlphaBlend = (AlphaBlend_t)dll.GetSymbol(_T("AlphaBlend"));
- if ( pfnAlphaBlend )
- {
- // we must keep the DLL loaded if we want to be able to
- // call AlphaBlend() so just never unload it at all, not a
- // big deal
- dll.Detach();
- }
- }
- }
-
+ static AlphaBlend_t pfnAlphaBlend = wxMSIMG32_SYMBOL(AlphaBlend);
if ( pfnAlphaBlend )
{
BLENDFUNCTION bf;
#ifdef wxHAVE_RAW_BITMAP
static void
-wxAlphaBlend(HDC hdcDst, int xDst, int yDst, int w, int h, int srcX, int srcY, const wxBitmap& bmpSrc)
+wxAlphaBlend(HDC hdcDst, int xDst, int yDst,
+ int w, int h,
+ int srcX, int srcY, const wxBitmap& bmpSrc)
{
// get the destination DC pixels
wxBitmap bmpDst(w, h, 32 /* force creating RGBA DIB */);
MemoryHDC hdcMem;
SelectInHDC select(hdcMem, GetHbitmapOf(bmpDst));
- if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, 0, 0, SRCCOPY) )
+ if ( !::BitBlt(hdcMem, 0, 0, w, h, hdcDst, xDst, yDst, SRCCOPY) )
{
wxLogLastError(_T("BitBlt"));
}
}
#endif // #ifdef wxHAVE_RAW_BITMAP
+
+void wxDC::DoGradientFillLinear (const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ wxDirection nDirection)
+{
+ // use native function if we have compile-time support it and can load it
+ // during run-time (linking to it statically would make the program
+ // unusable on earlier Windows versions)
+#if defined(GRADIENT_FILL_RECT_H) && wxUSE_DYNLIB_CLASS
+ typedef BOOL
+ (WINAPI *GradientFill_t)(HDC, PTRIVERTEX, ULONG, PVOID, ULONG, ULONG);
+ static GradientFill_t pfnGradientFill = wxMSIMG32_SYMBOL(GradientFill);
+
+ if ( pfnGradientFill )
+ {
+ GRADIENT_RECT grect;
+ grect.UpperLeft = 0;
+ grect.LowerRight = 1;
+
+ // invert colours direction if not filling from left-to-right or
+ // top-to-bottom
+ int firstVertex = nDirection == wxNORTH || nDirection == wxWEST ? 1 : 0;
+
+ // one vertex for upper left and one for upper-right
+ TRIVERTEX vertices[2];
+
+ vertices[0].x = rect.GetLeft();
+ vertices[0].y = rect.GetTop();
+ vertices[1].x = rect.GetRight();
+ vertices[1].y = rect.GetBottom();
+
+ vertices[firstVertex].Red = (COLOR16)(initialColour.Red() << 8);
+ vertices[firstVertex].Green = (COLOR16)(initialColour.Green() << 8);
+ vertices[firstVertex].Blue = (COLOR16)(initialColour.Blue() << 8);
+ vertices[firstVertex].Alpha = 0;
+ vertices[1 - firstVertex].Red = (COLOR16)(destColour.Red() << 8);
+ vertices[1 - firstVertex].Green = (COLOR16)(destColour.Green() << 8);
+ vertices[1 - firstVertex].Blue = (COLOR16)(destColour.Blue() << 8);
+ vertices[1 - firstVertex].Alpha = 0;
+
+ if (nDirection == wxWEST ||
+ nDirection == wxEAST)
+ if ( (*pfnGradientFill)
+ (
+ GetHdc(),
+ vertices,
+ WXSIZEOF(vertices),
+ &grect,
+ 1,
+ nDirection == wxWEST || nDirection == wxEAST
+ ? GRADIENT_FILL_RECT_H
+ : GRADIENT_FILL_RECT_V
+ ) )
+ {
+ // skip call of the base class version below
+ return;
+ }
+
+ wxLogLastError(_T("GradientFill"));
+ }
+#endif // wxUSE_DYNLIB_CLASS
+
+ wxDCBase::DoGradientFillLinear(rect, initialColour, destColour, nDirection);
+}
projects / wxWidgets.git / blobdiff