125 lines
2.9 KiB
Go
125 lines
2.9 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 "ui.h"
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// extern void doCheckboxOnToggled(uiCheckbox *, void *);
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// static inline void realuiCheckboxOnToggled(uiCheckbox *c)
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// {
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// uiCheckboxOnToggled(c, doCheckboxOnToggled, NULL);
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// }
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import "C"
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// no need to lock this; only the GUI thread can access it
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var checkboxes = make(map[*C.uiCheckbox]*Checkbox)
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// Checkbox is a Control that represents a box with a text label at its
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// side. When the user clicks the checkbox, a check mark will appear
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// in the box; clicking it again removes the check.
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type Checkbox struct {
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co *C.uiControl
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c *C.uiCheckbox
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onToggled func(*Checkbox)
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}
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// NewCheckbox creates a new Checkbox with the given text as its label.
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func NewCheckbox(text string) *Checkbox {
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c := new(Checkbox)
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ctext := C.CString(text)
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c.c = C.uiNewCheckbox(ctext)
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c.co = (*C.uiControl)(unsafe.Pointer(c.c))
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freestr(ctext)
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C.realuiCheckboxOnToggled(c.c)
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checkboxes[c.c] = c
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return c
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}
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// Destroy destroys the Checkbox.
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func (c *Checkbox) Destroy() {
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delete(checkboxes, c.c)
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C.uiControlDestroy(c.co)
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}
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// LibuiControl returns the libui uiControl pointer that backs
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// the Window. This is only used by package ui itself and should
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// not be called by programs.
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func (c *Checkbox) LibuiControl() uintptr {
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return uintptr(unsafe.Pointer(c.co))
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}
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// Handle returns the OS-level handle associated with this Checkbox.
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// On Windows this is an HWND of a standard Windows API BUTTON
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// class (as provided by Common Controls version 6).
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// On GTK+ this is a pointer to a GtkCheckButton.
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// On OS X this is a pointer to a NSButton.
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func (c *Checkbox) Handle() uintptr {
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return uintptr(C.uiControlHandle(c.co))
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}
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// Show shows the Checkbox.
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func (c *Checkbox) Show() {
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C.uiControlShow(c.co)
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}
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// Hide hides the Checkbox.
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func (c *Checkbox) Hide() {
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C.uiControlHide(c.co)
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}
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// Enable enables the Checkbox.
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func (c *Checkbox) Enable() {
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C.uiControlEnable(c.co)
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}
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// Disable disables the Checkbox.
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func (c *Checkbox) Disable() {
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C.uiControlDisable(c.co)
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}
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// Text returns the Checkbox's text.
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func (c *Checkbox) Text() string {
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ctext := C.uiCheckboxText(c.c)
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text := C.GoString(ctext)
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C.uiFreeText(ctext)
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return text
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}
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// SetText sets the Checkbox's text to text.
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func (c *Checkbox) SetText(text string) {
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ctext := C.CString(text)
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C.uiCheckboxSetText(c.c, ctext)
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freestr(ctext)
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}
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// OnToggled registers f to be run when the user clicks the Checkbox.
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// Only one function can be registered at a time.
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func (c *Checkbox) OnToggled(f func(*Checkbox)) {
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c.onToggled = f
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}
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//export doCheckboxOnToggled
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func doCheckboxOnToggled(cc *C.uiCheckbox, data unsafe.Pointer) {
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c := checkboxes[cc]
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if c.onToggled != nil {
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c.onToggled(c)
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}
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}
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// Checked returns whether the Checkbox is checked.
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func (c *Checkbox) Checked() bool {
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return tobool(C.uiCheckboxChecked(c.c))
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}
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// SetChecked sets whether the Checkbox is checked.
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func (c *Checkbox) SetChecked(checked bool) {
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C.uiCheckboxSetChecked(c.c, frombool(checked))
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}
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