remove unnecessary window.Do from window methods

window.go

@@ -126,11 +126,9 @@ func NewWindow(config WindowConfig) (*Window, error) {
 
 // Delete destroys a window. The window can't be used any further.
 func (w *Window) Delete() {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.Destroy()
 	})
-	})
 }
 
 // Clear clears the window with a color.
@@ -161,51 +159,41 @@ func (w *Window) Update() {
 
 // SetTitle changes the title of a window.
 func (w *Window) SetTitle(title string) {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.SetTitle(title)
 	})
-	})
 }
 
 // SetSize resizes a window to the specified size in pixels.
 // In case of a fullscreen window, it changes the resolution of that window.
 func (w *Window) SetSize(width, height float64) {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.SetSize(int(width), int(height))
 	})
-	})
 }
 
 // Size returns the size of the client area of a window (the part you can draw on).
 func (w *Window) Size() (width, height float64) {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		wi, hi := w.window.GetSize()
 		width = float64(wi)
 		height = float64(hi)
 	})
-	})
 	return width, height
 }
 
 // Show makes a window visible if it was hidden.
 func (w *Window) Show() {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.Show()
 	})
-	})
 }
 
 // Hide hides a window if it was visible.
 func (w *Window) Hide() {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.Hide()
 	})
-	})
 }
 
 // SetFullscreen sets a window fullscreen on a given monitor. If the monitor is nil, the window will be resored to windowed instead.
@@ -215,7 +203,6 @@ func (w *Window) Hide() {
 func (w *Window) SetFullscreen(monitor *Monitor) {
 	if w.Monitor() != monitor {
 		if monitor == nil {
-			w.Do(func(pixelgl.Context) {
 			pixelgl.Do(func() {
 				w.window.SetMonitor(
 					nil,
@@ -226,9 +213,7 @@ func (w *Window) SetFullscreen(monitor *Monitor) {
 					0,
 				)
 			})
-			})
 		} else {
-			w.Do(func(pixelgl.Context) {
 			pixelgl.Do(func() {
 				w.restore.xpos, w.restore.ypos = w.window.GetPos()
 				w.restore.width, w.restore.height = w.window.GetSize()
@@ -244,7 +229,6 @@ func (w *Window) SetFullscreen(monitor *Monitor) {
 					int(refreshRate),
 				)
 			})
-			})
 		}
 	}
 }
@@ -256,12 +240,9 @@ func (w *Window) IsFullscreen() bool {
 
 // Monitor returns a monitor a fullscreen window is on. If the window is not fullscreen, this function returns nil.
 func (w *Window) Monitor() *Monitor {
-	var monitor *glfw.Monitor
+	monitor := pixelgl.DoVal(func() interface{} {
-	w.Do(func(pixelgl.Context) {
-		monitor = pixelgl.DoVal(func() interface{} {
 		return w.window.GetMonitor()
 	}).(*glfw.Monitor)
-	})
 	if monitor == nil {
 		return nil
 	}
@@ -272,40 +253,31 @@ func (w *Window) Monitor() *Monitor {
 
 // Focus brings a window to the front and sets input focus.
 func (w *Window) Focus() {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.Focus()
 	})
-	})
 }
 
 // Focused returns true if a window has input focus.
 func (w *Window) Focused() bool {
-	var focused bool
+	focused := pixelgl.DoVal(func() interface{} {
-	w.Do(func(pixelgl.Context) {
-		focused = pixelgl.DoVal(func() interface{} {
 		return w.window.GetAttrib(glfw.Focused) == glfw.True
 	}).(bool)
-	})
 	return focused
 }
 
 // Maximize puts a windowed window to a maximized state.
 func (w *Window) Maximize() {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.Maximize()
 	})
-	})
 }
 
 // Restore restores a windowed window from a maximized state.
 func (w *Window) Restore() {
-	w.Do(func(pixelgl.Context) {
 	pixelgl.Do(func() {
 		w.window.Restore()
 	})
-	})
 }
 
 var currentWindow struct {