Initial revision

1 files changed, 116 insertions, 0 deletions

diff --git a/windirstat/selectobject.h b/windirstat/selectobject.h
new file mode 100644
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+++ b/windirstat/selectobject.h
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+// selectobject.h	- Declaration and implementation of Device Context helper classes.
+//
+// WinDirStat - Directory Statistics
+// Copyright (C) 2003 Bernhard Seifert
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// Author: bseifert@users.sourceforge.net, bseifert@daccord.net
+
+
+// Example:
+// Instead of writing 
+//     CGdiObject *old= pdc->SelectObject(&brush); ...; pdc->SelectObject(old);
+// we can simply write
+//     CSelectObject sobrush(pdc, &brush);
+// and the destructor will reselect the old object.
+
+#pragma once
+
+
+class CSelectObject
+{
+public:
+	CSelectObject(CDC *pdc, CGdiObject *pObject)
+	{ m_pOldObject= pdc->SelectObject(pObject); m_pdc= pdc; }
+	~CSelectObject()
+	{ m_pdc->SelectObject(m_pOldObject); }
+protected:
+	CDC *m_pdc;
+	CGdiObject *m_pOldObject;
+};
+
+class CSelectStockObject
+{
+public:
+	CSelectStockObject(CDC *pdc, int nIndex)
+	{ m_pOldObject= pdc->SelectStockObject(nIndex); m_pdc= pdc; }
+	~CSelectStockObject()
+	{ m_pdc->SelectObject(m_pOldObject); }
+protected:
+	CDC *m_pdc;
+	CGdiObject *m_pOldObject;
+};
+
+class CSetBkMode
+{
+public:
+	CSetBkMode(CDC *pdc, int mode)
+	{ m_pdc= pdc; m_oldMode= pdc->SetBkMode(mode); }
+	~CSetBkMode()
+	{ m_pdc->SetBkMode(m_oldMode); }
+protected:
+	CDC *m_pdc;
+	int m_oldMode;
+};
+
+class CSetTextColor
+{
+public:
+	CSetTextColor(CDC *pdc, COLORREF color)
+	{ m_pdc= pdc; m_oldColor= pdc->SetTextColor(color); }
+	~CSetTextColor()
+	{ m_pdc->SetTextColor(m_oldColor); }
+protected:
+	CDC *m_pdc;
+	COLORREF m_oldColor;
+};
+
+class CSetBkColor
+{
+public:
+	CSetBkColor(CDC *pdc, COLORREF color)
+	{ m_pdc= pdc; m_oldColor= pdc->SetBkColor(color); }
+	~CSetBkColor()
+	{ m_pdc->SetBkColor(m_oldColor); }
+protected:
+	CDC *m_pdc;
+	COLORREF m_oldColor;
+};
+
+class CSaveDC
+{
+public:
+	CSaveDC(CDC *pdc) { m_pdc= pdc; m_save= pdc->SaveDC(); }
+	~CSaveDC() { m_pdc->RestoreDC(m_save); }
+protected:
+	CDC *m_pdc;
+	int m_save;
+};
+
+inline BOOL CreateRectRgn(CRgn& rgn, CRect rc)
+{
+	return rgn.CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
+}
+
+inline COLORREF MakeShadowColor(COLORREF c, int percent)
+{
+	return RGB(
+		GetRValue(c) * percent / 100,
+		GetGValue(c) * percent / 100,
+		GetBValue(c) * percent / 100
+	);
+}
+