Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Add wxTransparentColour global pseudo-variable.

Browse Source 
Introduce a symbolic name for a fully transparent colour.

See #11897.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63856 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2010-04-05 11:44:33 +00:00
parent f49c80c105
commit cd300ef760
3 changed files with 8 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
include/wx/colour.h
View File

@@ -43,6 +43,10 @@ class WXDLLIMPEXP_FWD_CORE wxColour;
const unsigned char wxALPHA_TRANSPARENT = 0;
const unsigned char wxALPHA_OPAQUE = 0xff;
// a valid but fully transparent colour
#define wxTransparentColour wxColour(0, 0, 0, wxALPHA_TRANSPARENT)
#define wxTransparentColor wxTransparentColour
// ----------------------------------------------------------------------------
// wxVariant support
// ----------------------------------------------------------------------------
@@ -149,14 +153,14 @@ public:
// manipulation
// ------------
// These methods are static because they are mostly used
// within tight loops (where we don't want to instantiate wxColour's)
static void MakeMono (unsigned char* r, unsigned char* g, unsigned char* b, bool on);
static void MakeDisabled(unsigned char* r, unsigned char* g, unsigned char* b, unsigned char brightness = 255);
static void MakeGrey (unsigned char* r, unsigned char* g, unsigned char* b); // integer version
static void MakeGrey (unsigned char* r, unsigned char* g, unsigned char* b,
static void MakeGrey (unsigned char* r, unsigned char* g, unsigned char* b,
double weight_r, double weight_g, double weight_b); // floating point version
static unsigned char AlphaBlend (unsigned char fg, unsigned char bg, double alpha);
static void ChangeLightness(unsigned char* r, unsigned char* g, unsigned char* b, int ialpha);