diff options
| -rw-r--r-- | win32/ScintillaWin.cxx | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/win32/ScintillaWin.cxx b/win32/ScintillaWin.cxx index 647ae982e..1f0b6deeb 100644 --- a/win32/ScintillaWin.cxx +++ b/win32/ScintillaWin.cxx @@ -212,6 +212,8 @@ class ScintillaWin : void HorizontalScrollMessage(WPARAM wParam); void RealizeWindowPalette(bool inBackGround); void FullPaint(); + void FullPaintDC(HDC dc); + bool IsCompatibleDC(HDC dc); virtual int SetScrollInfo(int nBar, LPCSCROLLINFO lpsi, BOOL bRedraw); virtual bool GetScrollInfo(int nBar, LPSCROLLINFO lpsi); @@ -548,6 +550,15 @@ sptr_t ScintillaWin::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam case WM_PAINT: return WndPaint(wParam); + case WM_PRINTCLIENT: { + HDC hdc = reinterpret_cast<HDC>(wParam); + if (!IsCompatibleDC(hdc)) { + return ::DefWindowProc(MainHWND(), iMessage, wParam, lParam); + } + FullPaintDC(hdc); + } + break; + case WM_VSCROLL: ScrollMessage(wParam); break; @@ -1842,19 +1853,43 @@ void ScintillaWin::RealizeWindowPalette(bool inBackGround) { * This paint will not be abandoned. */ void ScintillaWin::FullPaint() { + HDC hdc = ::GetDC(MainHWND()); + FullPaintDC(hdc); + ::ReleaseDC(MainHWND(), hdc); +} + +/** + * Redraw all of text area on the specified DC. + * This paint will not be abandoned. + */ +void ScintillaWin::FullPaintDC(HDC hdc) { paintState = painting; rcPaint = GetClientRectangle(); paintingAllText = true; - HDC hdc = ::GetDC(MainHWND()); AutoSurface surfaceWindow(hdc, this); if (surfaceWindow) { Paint(surfaceWindow, rcPaint); surfaceWindow->Release(); } - ::ReleaseDC(MainHWND(), hdc); paintState = notPainting; } +static bool CompareDevCap(HDC hdc, HDC hOtherDC, int nIndex) { + return ::GetDeviceCaps(hdc, nIndex) == ::GetDeviceCaps(hOtherDC, nIndex); +} + +bool ScintillaWin::IsCompatibleDC(HDC hOtherDC) { + HDC hdc = ::GetDC(MainHWND()); + bool isCompatible = + CompareDevCap(hdc, hOtherDC, TECHNOLOGY) && + CompareDevCap(hdc, hOtherDC, LOGPIXELSY) && + CompareDevCap(hdc, hOtherDC, LOGPIXELSX) && + CompareDevCap(hdc, hOtherDC, BITSPIXEL) && + CompareDevCap(hdc, hOtherDC, PLANES); + ::ReleaseDC(MainHWND(), hdc); + return isCompatible; +} + /// Implement IUnknown STDMETHODIMP ScintillaWin::QueryInterface(REFIID riid, PVOID *ppv) { *ppv = NULL; |