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drawpanel.cpp: fixed a serious bug in draw grid fast algo. 

Fast algo currently disabled (tests needed)
This commit is contained in:
charras 2010-01-15 19:18:29 +00:00
parent b41e4e6947
commit 8789ca5f1d
1 changed files with 7 additions and 4 deletions
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11
common/drawpanel.cpp
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@ -769,11 +769,13 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
// Under linux, to be tested (could be depend on linux versions
// so perhaps could be necessary to set this option at run time.
#ifndef __WXMSW__
#if 1
// Use a pixel based draw to display grid
// There is a lot of calls, so the cost is hight
// and grid is slowly drawn on some platforms
#if defined ( __WXMAC__ )
wxWindowUpdateLocker(this); // under macOSX: drawings are faster with this
#endif
for( ii = 0; ; ii++ )
{
xg = wxRound(ii * screen_grid_size.x);
@ -792,10 +794,11 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
}
#else // Currently on test: Use a fast way to draw the grid
// But this is fast if the Blit function is fast. Not true on all platforms
// But this is fast only if the Blit function is fast. Not true on all platforms
// a grid column is drawn; and then copied to others grid columns
// this is possible because the grid is drawn only after clearing the screen.
// under MACOSX, is very slow and seems crash under Linux
// under MACOSX, is very slow
wxSize screenSize = GetClientSize();
ii = 1;
xg = wxRound(ii * screen_grid_size.x);
int x0pos = GRMapX( org.x + xg);
@ -815,7 +818,7 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
if( xg > size.x )
break;
xpos = GRMapX( org.x + xg );
DC->Blit( xpos, ypos, 1, size.y, DC, x0pos, ypos );
DC->Blit( xpos, ypos, 1, screenSize.y, DC, x0pos, ypos );
}
#endif
}