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patch for bounding box initialization

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7487 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2000-05-25 18:29:26 +00:00
parent 92963bc943
commit b0d2cd55b4
1 changed files with 18 additions and 4 deletions
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22
include/wx/dc.h
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@@ -48,6 +48,7 @@ public:
{ {
m_clipping = FALSE; m_clipping = FALSE;
m_ok = TRUE; m_ok = TRUE;
m_isBBoxValid = FALSE;
m_minX = m_minY = m_maxX = m_maxY = 0; m_minX = m_minY = m_maxX = m_maxY = 0;
@@ -400,10 +401,22 @@ public:
virtual void CalcBoundingBox(wxCoord x, wxCoord y) virtual void CalcBoundingBox(wxCoord x, wxCoord y)
{ {
if ( x < m_minX ) m_minX = x; if ( m_isBBoxValid )
if ( y < m_minY ) m_minY = y; {
if ( x > m_maxX ) m_maxX = x; if ( x < m_minX ) m_minX = x;
if ( y > m_maxY ) m_maxY = y; if ( y < m_minY ) m_minY = y;
if ( x > m_maxX ) m_maxX = x;
if ( y > m_maxY ) m_maxY = y;
}
else
{
m_isBBoxValid = TRUE;
m_minX = x;
m_minY = y;
m_maxX = x;
m_maxY = y;
}
} }
// Get the final bounding box of the PostScript or Metafile picture. // Get the final bounding box of the PostScript or Metafile picture.
@@ -577,6 +590,7 @@ protected:
bool m_ok:1; bool m_ok:1;
bool m_clipping:1; bool m_clipping:1;
bool m_isInteractive:1; bool m_isInteractive:1;
bool m_isBBoxValid:1;
// coordinate system variables // coordinate system variables