114 lines
2.2 KiB
C++
114 lines
2.2 KiB
C++
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/*
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* DEVDSC.C
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*
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* Purpose:
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* CDevDesc (Device Descriptor) class
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*
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* Owner:
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* Original RichEdit code: David R. Fulmer
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* Christian Fortini
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* Murray Sargent
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*/
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#include "_common.h"
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#include "_devdsc.h"
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#include "_edit.h"
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#include "_font.h"
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ASSERTDATA
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BOOL CDevDesc::SetDC(HDC hdc, LONG dxpInch, LONG dypInch)
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{
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TRACEBEGIN(TRCSUBSYSDISP, TRCSCOPEINTERN, "CDevDesc::SetDC");
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AssertSz((NULL == hdc) || (GetDeviceCaps(hdc, TECHNOLOGY) != DT_METAFILE),
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"CDevDesc::SetDC attempting to set a metafile");
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_hdc = hdc;
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if(!_hdc)
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{
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if(!_ped->_fInPlaceActive || !(hdc = _ped->TxGetDC()))
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{
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_dxpInch = _dypInch = 0;
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return FALSE;
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}
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}
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if (dxpInch == -1)
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{
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// Get device metrics - these should both succeed
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_dxpInch = (SHORT)GetDeviceCaps(hdc, LOGPIXELSX);
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AssertSz(_dxpInch != 0, "CDevDesc::SetDC _dxpInch is 0");
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}
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else
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_dxpInch = dxpInch;
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if (dypInch == -1)
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{
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_dypInch = (SHORT)GetDeviceCaps(hdc, LOGPIXELSY);
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AssertSz(_dypInch != 0, "CDevDesc::SetDC _dypInch is 0");
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}
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else
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_dypInch = dypInch;
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if(!_dxpInch || !_dypInch)
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return FALSE;
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// Release DC if we got the window DC
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if(!_hdc)
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_ped->TxReleaseDC(hdc);
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return TRUE;
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}
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void CDevDesc::SetMetafileDC(
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HDC hdcMetafile,
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LONG xMeasurePerInch,
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LONG yMeasurePerInch)
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{
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_fMetafile = TRUE;
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_hdc = hdcMetafile;
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_dxpInch = (SHORT) xMeasurePerInch;
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_dypInch = (SHORT) yMeasurePerInch;
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}
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HDC CDevDesc::GetScreenDC() const
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{
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TRACEBEGIN(TRCSUBSYSDISP, TRCSCOPEINTERN, "CDevDesc::GetScreenDC");
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Assert(!_hdc);
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Assert(_ped);
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return _ped->TxGetDC();
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}
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VOID CDevDesc::ReleaseScreenDC(HDC hdc) const
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{
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TRACEBEGIN(TRCSUBSYSDISP, TRCSCOPEINTERN, "CDevDesc::ReleaseScreenDC");
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Assert(!_hdc);
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Assert(_ped);
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_ped->TxReleaseDC(hdc);
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}
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void CDevDesc::LRtoDR(RECT &rcDest, const RECT &rcSrc, TFLOW tflow) const
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{
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TRACEBEGIN(TRCSUBSYSDISP, TRCSCOPEINTERN, "CDevDesc::LRtoDR");
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if (!IsUVerticalTflow(tflow))
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{
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rcDest.left = LXtoDX(rcSrc.left);
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rcDest.right = LXtoDX(rcSrc.right);
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rcDest.top = LYtoDY(rcSrc.top);
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rcDest.bottom = LYtoDY(rcSrc.bottom);
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}
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else
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{
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rcDest.left = LYtoDY(rcSrc.left);
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rcDest.right = LYtoDY(rcSrc.right);
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rcDest.top = LXtoDX(rcSrc.top);
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rcDest.bottom = LXtoDX(rcSrc.bottom);
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}
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}
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