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Modify drawing on "Alpha Screen" in drawing sample to make transparency effect more visible.

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Use transparent colours in drawing operations to show more clearly transparency effects.
This commit is contained in:
Artur Wieczorek
2016-01-07 21:32:22 +01:00
parent 525296aec5
commit 9aa5a4de0c
1 changed files with 4 additions and 3 deletions
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7
samples/drawing/drawing.cpp
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@@ -1027,14 +1027,14 @@ void MyCanvas::DrawAlpha(wxDC& dc)
dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ; dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
dc.SetPen( wxPen( wxColour( 0, 0, 128 ), 12)); dc.SetPen( wxPen( wxColour( 0, 0, 128 ), 12));
dc.SetBrush(*wxBLUE_BRUSH); dc.SetBrush( wxColour(0, 0, 255, 192) );
r.Offset( width * 0.8 , - width * 0.66 ) ; r.Offset( width * 0.8 , - width * 0.66 ) ;
dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ; dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
dc.SetPen( wxPen( wxColour( 128, 128, 0 ), 12)); dc.SetPen( wxPen( wxColour( 128, 128, 0 ), 12));
dc.SetBrush( wxBrush( wxColour( 192, 192, 0))); dc.SetBrush( wxBrush( wxColour( 192, 192, 0, 192)));
r.Offset( width * 0.8 , width *0.5 ) ; r.Offset( width * 0.8 , width *0.5 ) ;
@@ -1044,7 +1044,8 @@ void MyCanvas::DrawAlpha(wxDC& dc)
dc.SetBrush( wxBrush( wxColour(255,255,128,128) ) ); dc.SetBrush( wxBrush( wxColour(255,255,128,128) ) );
dc.DrawRoundedRectangle( 0 , margin + width / 2 , width * 3 , 100 , radius) ; dc.DrawRoundedRectangle( 0 , margin + width / 2 , width * 3 , 100 , radius) ;
dc.SetTextForeground( wxColour(255,255,0,128) ); dc.SetTextBackground( wxColour(160, 192, 160, 160) );
dc.SetTextForeground( wxColour(255, 128, 128, 128) );
dc.SetFont( wxFont( 40, wxFONTFAMILY_SWISS, wxFONTSTYLE_ITALIC, wxFONTWEIGHT_NORMAL ) ); dc.SetFont( wxFont( 40, wxFONTFAMILY_SWISS, wxFONTSTYLE_ITALIC, wxFONTWEIGHT_NORMAL ) );
dc.DrawText( wxT("Hello!"), 120, 80 ); dc.DrawText( wxT("Hello!"), 120, 80 );
} }