public void TestFullSizeThumbDragging()
        {
            Screen screen = new Screen(100, 100);
            VerticalSliderControl slider = new VerticalSliderControl();

            slider.Bounds    = new UniRectangle(10, 10, 100, 100);
            slider.ThumbSize = 1.0f;
            screen.Desktop.Children.Add(slider);

            // Move the mouse over the thumb, press the left mouse button and drag
            // it to a new location
            slider.ProcessMouseMove(100, 100, 50, 50);
            slider.ProcessMousePress(MouseButtons.Left);
            slider.ProcessMouseMove(100, 100, 50, 60);
            Assert.That(slider.ThumbPosition, Is.EqualTo(0.0f).Within(16).Ulps);
        }
        public void TestThumbDragging()
        {
            Screen screen = new Screen(100, 100);
            VerticalSliderControl slider = new VerticalSliderControl();

            slider.Bounds        = new UniRectangle(10, 10, 100, 100);
            slider.ThumbSize     = 0.33f;
            slider.ThumbPosition = 0.25f;
            screen.Desktop.Children.Add(slider);

            float movableRange = 1.0f - slider.ThumbSize;
            float top          = movableRange * slider.ThumbPosition;
            float bottom       = top + slider.ThumbSize;

            top    *= slider.Bounds.Size.Y.Offset;
            bottom *= slider.Bounds.Size.Y.Offset;
            float thumbHeight = bottom - top;

            float target = movableRange * (1.0f - slider.ThumbPosition);

            target *= slider.Bounds.Size.Y.Offset;

            // Move the mouse over the thumb, press the left mouse button and drag
            // it to a new location
            slider.ProcessMouseMove(100, 100, 50, top + thumbHeight / 2.0f);
            slider.ProcessMousePress(MouseButtons.Left);
            slider.ProcessMouseMove(100, 100, 50, target + thumbHeight / 2.0f);
            Assert.That(slider.ThumbPosition, Is.EqualTo(0.75f).Within(16).Ulps);

            slider.ProcessMouseMove(100, 100, 50, slider.Bounds.Location.Y.Offset);
            Assert.That(slider.ThumbPosition, Is.EqualTo(0.0f).Within(16).Ulps);

            slider.ProcessMouseMove(
                100, 100, 50, slider.Bounds.Location.Y.Offset + slider.Bounds.Size.Y.Offset
                );
            Assert.That(slider.ThumbPosition, Is.EqualTo(1.0f).Within(16).Ulps);
        }
    public void TestFullSizeThumbDragging() {
      Screen screen = new Screen(100, 100);
      VerticalSliderControl slider = new VerticalSliderControl();
      slider.Bounds = new UniRectangle(10, 10, 100, 100);
      slider.ThumbSize = 1.0f;
      screen.Desktop.Children.Add(slider);

      // Move the mouse over the thumb, press the left mouse button and drag
      // it to a new location
      slider.ProcessMouseMove(100, 100, 50, 50);
      slider.ProcessMousePress(MouseButtons.Left);
      slider.ProcessMouseMove(100, 100, 50, 60);
      Assert.That(slider.ThumbPosition, Is.EqualTo(0.0f).Within(16).Ulps);
    }
    public void TestThumbDragging() {
      Screen screen = new Screen(100, 100);
      VerticalSliderControl slider = new VerticalSliderControl();
      slider.Bounds = new UniRectangle(10, 10, 100, 100);
      slider.ThumbSize = 0.33f;
      slider.ThumbPosition = 0.25f;
      screen.Desktop.Children.Add(slider);

      float movableRange = 1.0f - slider.ThumbSize;
      float top = movableRange * slider.ThumbPosition;
      float bottom = top + slider.ThumbSize;

      top *= slider.Bounds.Size.Y.Offset;
      bottom *= slider.Bounds.Size.Y.Offset;
      float thumbHeight = bottom - top;

      float target = movableRange * (1.0f - slider.ThumbPosition);
      target *= slider.Bounds.Size.Y.Offset;

      // Move the mouse over the thumb, press the left mouse button and drag
      // it to a new location
      slider.ProcessMouseMove(100, 100, 50, top + thumbHeight / 2.0f);
      slider.ProcessMousePress(MouseButtons.Left);
      slider.ProcessMouseMove(100, 100, 50, target + thumbHeight / 2.0f);
      Assert.That(slider.ThumbPosition, Is.EqualTo(0.75f).Within(16).Ulps);

      slider.ProcessMouseMove(100, 100, 50, slider.Bounds.Location.Y.Offset);
      Assert.That(slider.ThumbPosition, Is.EqualTo(0.0f).Within(16).Ulps);

      slider.ProcessMouseMove(
        100, 100, 50, slider.Bounds.Location.Y.Offset + slider.Bounds.Size.Y.Offset
      );
      Assert.That(slider.ThumbPosition, Is.EqualTo(1.0f).Within(16).Ulps);
    }