diff options
Diffstat (limited to 'redo/area.go')
| -rw-r--r-- | redo/area.go | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/redo/area.go b/redo/area.go index 683e3f8..01b7208 100644 --- a/redo/area.go +++ b/redo/area.go @@ -39,6 +39,12 @@ type Area interface { RepaintAll() } +type areabase struct { + width int + height int + handler AreaHandler +} + // AreaHandler represents the events that an Area should respond to. // These methods are all executed on the main goroutine, not necessarily the same one that you created the AreaHandler in; you are responsible for the thread safety of any members of the actual type that implements ths interface. // (Having to use this interface does not strike me as being particularly Go-like, but the nature of Paint makes channel-based event handling a non-option; in practice, deadlocks occur.) @@ -287,7 +293,11 @@ func NewArea(width int, height int, handler AreaHandler) Area { if handler == nil { panic("handler passed to NewArea() must not be nil") } - return newArea(width, height, handler) + return newArea(&areabase{ + width: width, + height: height, + handler: handler, + }) } // internal function, but shared by all system implementations: &img.Pix[0] is not necessarily the first pixel in the image |