122 lines
2.6 KiB
Go
122 lines
2.6 KiB
Go
// 14 june 2016
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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 "ui.h"
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import "C"
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type Align int
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const (
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AlignFill Align = iota
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AlignStart
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AlignCenter
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AlignEnd
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)
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type At int
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const (
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AtLeading At = iota
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AtTop
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AtTrailing
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AtBottom
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)
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// Grid is a container Control that arranges controls in rows and columns, with
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// stretchy ("expanding") rows, stretchy ("expanding") columns, cells that span
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// rows and columns, and cells whose content is aligned in either direction
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// rather than just filling.
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type Grid struct {
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c *C.uiControl
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g *C.uiGrid
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children []Control
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}
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// NewGrid creates a new Grid.
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func NewGrid() *Grid {
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g := new(Grid)
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g.g = C.uiNewGrid()
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g.c = (*C.uiControl)(unsafe.Pointer(g.g))
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return g
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}
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// Destroy destroys the Grid. If the Grid has children,
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// Destroy calls Destroy on those Controls as well.
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func (g *Grid) Destroy() {
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for len(g.children) != 0 {
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c := g.children[0]
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g.Delete(0)
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c.Destroy()
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}
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C.uiControlDestroy(g.c)
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}
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// LibuiControl returns the libui uiControl pointer that backs
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// the Grid. This is only used by package ui itself and should
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// not be called by programs.
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func (g *Grid) LibuiControl() uintptr {
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return uintptr(unsafe.Pointer(g.c))
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}
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// Handle returns the OS-level handle associated with this Grid.
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func (g *Grid) Handle() uintptr {
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return uintptr(C.uiControlHandle(g.c))
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}
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// Show shows the Grid.
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func (g *Grid) Show() {
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C.uiControlShow(g.c)
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}
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// Hide hides the Grid.
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func (g *Grid) Hide() {
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C.uiControlHide(g.c)
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}
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// Enable enables the Grid.
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func (g *Grid) Enable() {
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C.uiControlEnable(g.c)
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}
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// Disable disables the Grid.
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func (g *Grid) Disable() {
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C.uiControlDisable(g.c)
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}
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// Append adds the given control to the end of the Grid.
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func (g *Grid) Append(child Control, left, top, xspan, yspan int, hexpand bool, uialign Align, vexpand bool, valign Align) {
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c := (*C.uiControl)(nil)
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if child != nil {
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c = touiControl(child.LibuiControl())
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}
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C.uiGridAppend(g.g, c, C.int(left), C.int(top), C.int(xspan), C.int(yspan), frombool(hexpand), C.uiAlign(uialign), frombool(vexpand), C.uiAlign(valign))
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g.children = append(g.children, child)
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}
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// Delete deletes the nth control of the Grid.
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func (g *Grid) Delete(n int) {
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g.children = append(g.children[:n], g.children[n + 1:]...)
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//C.uiGridDelete(g.g, C.int(n))
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}
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// TODO: InsertAt
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// Padded returns whether there is space between each control
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// of the Grid.
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func (g *Grid) Padded() bool {
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return tobool(C.uiGridPadded(g.g))
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}
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// SetPadded controls whether there is space between each control
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// of the Grid. The size of the padding is determined by the OS and
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// its best practices.
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func (g *Grid) SetPadded(padded bool) {
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C.uiGridSetPadded(g.g, frombool(padded))
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}
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