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Show grey version of image with alpha channel.

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39620 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Włodzimierz Skiba
2006-06-07 16:59:33 +00:00
parent d0e834f399
commit 9061c15cee
2 changed files with 14 additions and 5 deletions
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15
samples/image/image.cpp
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@@ -17,7 +17,7 @@
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#include "wx/wx.h"
#endif
#include "wx/image.h"
@@ -89,6 +89,7 @@ public:
wxBitmap my_toucan_flipped_horiz;
wxBitmap my_toucan_flipped_vert;
wxBitmap my_toucan_flipped_both;
wxBitmap my_toucan_grey;
wxBitmap my_toucan_head;
int xH, yH ;
@@ -468,11 +469,15 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
else
my_horse_png = wxBitmap( image );
image = wxImage(wxT("toucan.png"));
my_toucan = wxBitmap(image);
if ( !image.LoadFile( dir + _T("toucan.png")) )
wxLogError(wxT("Can't load PNG image"));
else
my_toucan = wxBitmap(image);
my_toucan_flipped_horiz = wxBitmap(image.Mirror(true));
my_toucan_flipped_vert = wxBitmap(image.Mirror(false));
my_toucan_flipped_both = wxBitmap(image.Mirror(true).Mirror(false));
my_toucan_grey = wxBitmap(image.ConvertToGreyscale());
my_toucan_head = wxBitmap(image.GetSubImage(wxRect(40, 7, 80, 60)));
#endif // wxUSE_LIBPNG
@@ -752,6 +757,10 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
dc.DrawText(wxT("Flipped both h&v"), x+50, y);
dc.DrawBitmap(my_toucan_flipped_both, x, y+15);
y += yy;
dc.DrawText(wxT("In greyscale"), x+50, y);
dc.DrawBitmap(my_toucan_grey, x, y+15);
y += yy;
dc.DrawText(wxT("Toucan's head"), x+50, y);
dc.DrawBitmap(my_toucan_head, x, y+15);