// 15 july 2014 package ui // #include "winapi_windows.h" import "C" type label struct { *controlSingleHWNDWithText standalone bool } var labelclass = toUTF16("STATIC") func newLabel(text string) Label { hwnd := C.newControl(labelclass, // SS_NOPREFIX avoids accelerator translation; SS_LEFTNOWORDWRAP clips text past the end // controls are vertically aligned to the top by default (thanks Xeek in irc.freenode.net/#winapi) C.SS_NOPREFIX|C.SS_LEFTNOWORDWRAP, C.WS_EX_TRANSPARENT) l := &label{ controlSingleHWNDWithText: newControlSingleHWNDWithText(hwnd), } l.fpreferredSize = l.preferredSize l.fnTabStops = func() int { // labels are not tab stops return 0 } l.SetText(text) C.controlSetControlFont(l.hwnd) return l } func (l *label) Text() string { return l.text() } func (l *label) SetText(text string) { l.setText(text) } const ( // via http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing labelHeight = 8 labelYOffset = 3 ) func (l *label) preferredSize(d *sizing) (width, height int) { return int(l.textlen), fromdlgunitsY(labelHeight, d) } /*TODO func (l *label) commitResize(c *allocation, d *sizing) { if !l.standalone { yoff := fromdlgunitsY(labelYOffset, d) c.y += yoff c.height -= yoff // by default, labels are drawn offset by the internal leading (the space reserved for accents on uppercase letters) // the above calculation assumes otherwise, so account for the difference // there will be enough space left over for the internal leading anyway (at least on the standard fonts) // don't do this to standalone labels, otherwise those accents get cut off! c.y -= int(d.internalLeading) c.height += int(d.internalLeading) } basecommitResize(l, c, d) } */