diff options
| -rw-r--r-- | progressbar.go | 77 | ||||
| -rw-r--r-- | zz_test.go | 25 |
2 files changed, 100 insertions, 2 deletions
diff --git a/progressbar.go b/progressbar.go new file mode 100644 index 0000000..ef5116c --- /dev/null +++ b/progressbar.go @@ -0,0 +1,77 @@ +// 12 december 2015 + +package ui + +import ( + "unsafe" +) + +// #include "ui.h" +import "C" + +// ProgressBar is a Control that represents a horizontal bar that +// is filled in progressively over time as a process completes. +type ProgressBar struct { + c *C.uiControl + p *C.uiProgressBar +} + +// NewProgressBar creates a new ProgressBar. +func NewProgressBar() *ProgressBar { + p := new(ProgressBar) + + p.p = C.uiNewProgressBar() + p.c = (*C.uiControl)(unsafe.Pointer(p.p)) + + return p +} + +// Destroy destroys the ProgressBar. +func (p *ProgressBar) Destroy() { + C.uiControlDestroy(p.c) +} + +// LibuiControl returns the libui uiControl pointer that backs +// the Window. This is only used by package ui itself and should +// not be called by programs. +func (p *ProgressBar) LibuiControl() uintptr { + return uintptr(unsafe.Pointer(p.c)) +} + +// Handle returns the OS-level handle associated with this ProgressBar. +// On Windows this is an HWND of a standard Windows API +// PROGRESS_CLASS class (as provided by Common Controls +// version 6). +// On GTK+ this is a pointer to a GtkProgressBar. +// On OS X this is a pointer to a NSProgressIndicator. +func (p *ProgressBar) Handle() uintptr { + return uintptr(C.uiControlHandle(p.c)) +} + +// Show shows the ProgressBar. +func (p *ProgressBar) Show() { + C.uiControlShow(p.c) +} + +// Hide hides the ProgressBar. +func (p *ProgressBar) Hide() { + C.uiControlHide(p.c) +} + +// Enable enables the ProgressBar. +func (p *ProgressBar) Enable() { + C.uiControlEnable(p.c) +} + +// Disable disables the ProgressBar. +func (p *ProgressBar) Disable() { + C.uiControlDisable(p.c) +} + +// TODO Value + +// SetValue sets the ProgressBar's currently displayed percentage +// to value. value must be between 0 and 100 inclusive. +func (p *ProgressBar) SetValue(value int) { + C.uiProgressBarSetValue(p.p, C.int(value)) +} @@ -2,17 +2,38 @@ package ui +import "time" import "testing" func TestIt(t *testing.T) { err := Main(func() { w := NewWindow("Hello", 320, 240, false) + stop := make(chan struct{}) w.OnClosing(func(w *Window) bool { + stop <- struct{}{} Quit() return true }) - l := NewLabel("A Label") - w.SetChild(l) + p := NewProgressBar() + w.SetChild(p) + go func() { + value := 0 + ticker := time.NewTicker(time.Second / 2) + for { + select { + case <-ticker.C: + QueueMain(func() { + value++ + if value > 100 { + value = 0 + } + p.SetValue(value) + }) + case <-stop: + return + } + } + }() w.Show() }) if err != nil { |