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attempt to find a suitable way to draw grid depending on platforms

This commit is contained in:
charras 2010-01-14 08:55:45 +00:00
parent e15341411d
commit 2c9dd50851
1 changed files with 14 additions and 2 deletions
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16
common/drawpanel.cpp
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@ -12,6 +12,7 @@
#include "class_base_screen.h"
#include "wxstruct.h"
#include <wx/wupdlock.h>
#include "kicad_device_context.h"
#define CURSOR_SIZE 12 // Cursor size in pixels
@ -760,9 +761,18 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
GRSetColorPen( DC, color );
int xpos, ypos;
#if 0 // Use a pixel based draw to display grid
// Draw grid: the best algorithm depend on the platform.
// under macOSX, the first method is better
// under window, the second method is better
// Under linux, to be tested (could be depend on linux versions
// so perhaps could be necessary to set this option at run time.
#if defined ( __WXMAC__ )
// 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
wxWindowUpdateLocker(this); // under macOSX: drawings are faster with this
for( ii = 0; ; ii++ )
{
xg = wxRound(ii * screen_grid_size.x);
@ -775,14 +785,16 @@ void WinEDA_DrawPanel::DrawBackGround( wxDC* DC )
yg = wxRound(jj * screen_grid_size.y);
if( yg > size.y )
break;
int ypos = org.y + yg;
ypos = org.y + yg;
DC->DrawPoint( xpos, GRMapY( ypos ) );
}
}
#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
// 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
ii = 1;
xg = wxRound(ii * screen_grid_size.x);
int x0pos = GRMapX( org.x + xg);