86 lines
2.1 KiB
Go
86 lines
2.1 KiB
Go
// 12 december 2015
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package ui
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import (
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"unsafe"
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)
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// #include "pkgui.h"
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import "C"
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// Box is a Control that holds a group of Controls horizontally
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// or vertically. If horizontally, then all controls have the same
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// height. If vertically, then all controls have the same width.
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// By default, each control has its preferred width (horizontal)
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// or height (vertical); if a control is marked "stretchy", it will
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// take whatever space is left over. If multiple controls are marked
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// stretchy, they will be given equal shares of the leftover space.
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// There can also be space between each control ("padding").
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type Box struct {
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ControlBase
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b *C.uiBox
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children []Control
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}
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// NewHorizontalBox creates a new horizontal Box.
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func NewHorizontalBox() *Box {
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b := new(Box)
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b.b = C.uiNewHorizontalBox()
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b.ControlBase = NewControlBase(b, uintptr(unsafe.Pointer(b.b)))
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return b
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}
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// NewVerticalBox creates a new vertical Box.
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func NewVerticalBox() *Box {
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b := new(Box)
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b.b = C.uiNewVerticalBox()
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b.ControlBase = NewControlBase(b, uintptr(unsafe.Pointer(b.b)))
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return b
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}
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// Destroy destroys the Box. If the Box has children,
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// Destroy calls Destroy on those Controls as well.
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func (b *Box) Destroy() {
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for len(b.children) != 0 {
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c := b.children[0]
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b.Delete(0)
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c.Destroy()
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}
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b.ControlBase.Destroy()
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}
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// Append adds the given control to the end of the Box.
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func (b *Box) Append(child Control, stretchy bool) {
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c := (*C.uiControl)(nil)
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// TODO this part is wrong for Box?
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if child != nil {
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c = touiControl(child.LibuiControl())
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}
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C.uiBoxAppend(b.b, c, frombool(stretchy))
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b.children = append(b.children, child)
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}
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// Delete deletes the nth control of the Box.
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func (b *Box) Delete(n int) {
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b.children = append(b.children[:n], b.children[n + 1:]...)
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C.uiBoxDelete(b.b, C.int(n))
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}
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// Padded returns whether there is space between each control
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// of the Box.
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func (b *Box) Padded() bool {
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return tobool(C.uiBoxPadded(b.b))
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}
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// SetPadded controls whether there is space between each control
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// of the Box. The size of the padding is determined by the OS and
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// its best practices.
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func (b *Box) SetPadded(padded bool) {
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C.uiBoxSetPadded(b.b, frombool(padded))
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}
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