func (slct *Select) Show(workarea xrect.Rect, tabCompleteType int,
groups []*SelectShowGroup, data interface{}) bool {
if slct.showing {
return false
}
// if there aren't any groups, we obviously don't need to show anything.
if len(groups) == 0 {
return false
}
// So maybe there are groups, but there aren't any items...
foundItem := false
for _, group := range groups {
if len(group.items) > 0 {
foundItem = true
break
}
}
if !foundItem {
return false
}
slct.groups = groups
slct.tabComplete = tabCompleteType
slct.win.Stack(xproto.StackModeAbove)
slct.input.Reset()
// Position the initial list of items with no filter.
slct.FilterItems("")
// Create some short aliases and start computing the geometry of the
// prompt window.
bs := slct.theme.BorderSize
pad := slct.theme.Padding
inpHeight := slct.input.Geom.Height()
height := 2*(bs+pad) + inpHeight + bs
maxFontWidth := 0
didGroupSpacing := false
for _, group := range slct.groups {
if len(group.items) > 0 && group.hasGroup() {
maxFontWidth = misc.Max(maxFontWidth, group.win.Geom.Width())
height += group.win.Geom.Height() + slct.theme.GroupSpacing
didGroupSpacing = true
}
for _, item := range group.items {
maxFontWidth = misc.Max(maxFontWidth, item.regular.Geom.Width())
height += item.regular.Geom.Height() + itemTopSpace + itemBotSpace
}
}
if didGroupSpacing {
height -= slct.theme.GroupSpacing
}
maxWidth := int(float64(workarea.Width()) * 0.8)
width := misc.Min(maxWidth, maxFontWidth+2*(bs+pad))
// position the damn window based on its width/height (i.e., center it)
posx := workarea.X() + workarea.Width()/2 - width/2
posy := workarea.Y() + workarea.Height()/2 - height/2
// Issue the configure requests. We also need to adjust the borders.
slct.win.MoveResize(posx, posy, width, height)
slct.bInp.MoveResize(0, bs+inpHeight, width, bs)
slct.bTop.Resize(width, bs)
slct.bBot.MoveResize(0, height-bs, width, bs)
slct.bLft.Resize(bs, height)
slct.bRht.MoveResize(width-bs, 0, bs, height)
slct.showing = true
slct.data = data
slct.selected = -1
slct.win.Map()
slct.bInp.Focus()
return true
}
// Show will map and show the slice of items provided.
//
// 'workarea' is the rectangle to position the prompt window in. (i.e.,
// typically the rectangle of the monitor to place it on.)
//
// 'keyStr' is an optional parameter. If this prompt is shown in
// response to a keybinding, then keyStr should be the keybinding used.
// If there are modifiers used in the keyStr, the prompt will automatically
// close if all of the modifiers are released. (This is the "alt-tab"
// functionality.)
// Note that if you don't want this auto-closing feature, simply leave keyStr
// blank, even if the prompt is shown in response to a key binding.
//
// Show returns false if the prompt cannot be shown for some reason.
func (cycle *Cycle) Show(workarea xrect.Rect,
keyStr string, items []*CycleItem) bool {
if cycle.showing {
return false
}
// If there are no items, obviously quit.
if len(items) == 0 {
return false
}
// Note that SmartGrab is smart and avoids races. Check it out
// in xgbutil/keybind.go if you're interested.
// This makes it impossible to press and release alt-tab too quickly
// to have it not register.
if cycle.config.Grab {
if err := keybind.SmartGrab(cycle.X, cycle.X.Dummy()); err != nil {
logger.Warning.Printf(
"Could not grab keyboard for prompt cycle: %s", err)
return false
}
}
// Save the list of cycle items (this how we know when to cycle between
// them). Namely, cycle.selected is an index to this list.
cycle.items = items
// Save the modifiers used, if any.
cycle.grabMods, _, _ = keybind.ParseString(cycle.X, keyStr)
// Put the prompt window on top of the window stack.
cycle.win.Stack(xproto.StackModeAbove)
// Create some short aliases and start computing the geometry of the
// cycle window.
bs := cycle.theme.BorderSize
cbs := cycle.theme.IconBorderSize
is := cycle.theme.IconSize
pad := cycle.theme.Padding
maxWidth := int(float64(workarea.Width()) * 0.8)
x, y := bs+pad, bs+pad+cbs+cycle.fontHeight
width := 2 * (bs + pad)
height := (2 * (bs + pad + cbs)) + is + cbs + cycle.fontHeight
maxFontWidth := 0
widthStatic := false // when true, we stop increasing width
for _, item := range items {
maxFontWidth = misc.Max(maxFontWidth, item.text.Geom.Width())
// Check if we should move on to the next row.
if x+(is+(2*cbs))+pad+bs > maxWidth {
x = bs + pad
y += is + (2 * cbs)
height += is + (2 * cbs)
widthStatic = true
}
// Position the icon window and map its active version or its
// inactive version if it's iconified.
item.show(x, y)
// Only increase the width if we're still adding icons to the first row.
if !widthStatic {
width += is + (2 * cbs)
}
x += is + (2 * cbs)
}
// If the computed width is less than the max font width, then increase
// the width of the prompt to fit the longest window title.
// Forcefully cap it as the maxWidth, though.
if maxFontWidth+2*(pad+bs) > width {
width = misc.Min(maxWidth, maxFontWidth+2*(pad+bs))
}
// position the damn window based on its width/height (i.e., center it)
posx := workarea.X() + workarea.Width()/2 - width/2
posy := workarea.Y() + workarea.Height()/2 - height/2
// Issue the configure requests. We also need to adjust the borders.
cycle.win.MoveResize(posx, posy, width, height)
cycle.bTop.Resize(width, bs)
cycle.bBot.MoveResize(0, height-bs, width, bs)
cycle.bLft.Resize(bs, height)
cycle.bRht.MoveResize(width-bs, 0, bs, height)
cycle.showing = true
cycle.selected = -1
cycle.win.Map()
return true
}