diff options
author | Kurt Jung <kurt.w.jung@code.google.com> | 2013-08-13 12:01:05 -0400 |
---|---|---|
committer | Kurt Jung <kurt.w.jung@code.google.com> | 2013-08-13 12:01:05 -0400 |
commit | 3d921b9e0ed6dd64b81b477017d1fc79d0e77e9a (patch) | |
tree | 3f342301ebc142c2a93a8e82d056bb496c3c557e /fpdf.go | |
parent | 5d510c1aa2c794e82c114cf0adf540f6829886d7 (diff) |
Documentation updates regarding transparency
Diffstat (limited to 'fpdf.go')
-rw-r--r-- | fpdf.go | 16 |
1 files changed, 11 insertions, 5 deletions
@@ -812,14 +812,20 @@ func (f *Fpdf) Arc(x, y, rx, ry, degRotate, degStart, degEnd float64, styleStr s } // Set the alpha blending channel. The blending effect applies to text, -// drawings and images. alpha must be a value between 0.0 (fully transparent) -// to 1.0 (fully opaque). Values outside of this range result in an error. +// drawings and images. +// +// alpha must be a value between 0.0 (fully transparent) to 1.0 (fully opaque). +// Values outside of this range result in an error. +// // blendModeStr must be one of "Normal", "Multiply", "Screen", "Overlay", // "Darken", "Lighten", "ColorDodge", "ColorBurn","HardLight", "SoftLight", // "Difference", "Exclusion", "Hue", "Saturation", "Color", or "Luminosity". An -// empty string is replaced with "Normal". To reset normal rendering after -// applying a blending mode, call this method with alpha set to 1.0 and -// blendModeStr set to "Normal". +// empty string is replaced with "Normal". +// +// To reset normal rendering after applying a blending mode, call this method +// with alpha set to 1.0 and blendModeStr set to "Normal". +// +// See tutorial 12 for an example of this function. func (f *Fpdf) SetAlpha(alpha float64, blendModeStr string) { if f.err != nil { return |