public void TestGetTouchPointerStyle()
{
var sourceImage = CreateSourceImage();
var visualZoomController = new VisualZoomController(sourceImage, new Size(60, 50));
visualZoomController.ZoomPercent = 25;
Assert.AreEqual(new Point(5, 6), visualZoomController.ImageLocation, "Precondition.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(5, 6)), "Image is too small to shift.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(10, 10)), "Image is too small to shift.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(0, 0)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(0, 10)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(59, 10)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(10, 0)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(10, 49)), "Outside of image.");
visualZoomController.ZoomPercent = 100;
Assert.IsTrue(visualZoomController.ZoomedImageSize.Width > visualZoomController.ImageBoxSize.Width, "Precondition.");
Assert.IsTrue(visualZoomController.ZoomedImageSize.Height > visualZoomController.ImageBoxSize.Height, "Precondition.");
Assert.AreEqual(VisualController.TouchPointerStyle.Shift, visualZoomController.GetTouchPointerStyle(new Point(0, 0)));
Assert.AreEqual(VisualController.TouchPointerStyle.Shift, visualZoomController.GetTouchPointerStyle(new Point(10, 10)));
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(-1, -1)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(-1, 10)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(visualZoomController.ZoomedImageSize.Width, 10)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(10, -1)), "Outside of image.");
Assert.AreEqual(VisualController.TouchPointerStyle.None, visualZoomController.GetTouchPointerStyle(new Point(10, visualZoomController.ZoomedImageSize.Height)), "Outside of image.");
}
public void TestShift()
{
var sourceImage = new CodedImage {
Size = new Size(200, 150)
};
int[] sourcePixels;
using (sourceImage.LockPixels(out sourcePixels))
{
for (int i = 0; i < sourcePixels.Length; i++)
{
sourcePixels[i] = i;
}
}
var visualZoomController = new VisualZoomController(sourceImage, new Size(60, 50));
visualZoomController.ZoomPercent = 100;
visualZoomController.OnTouched(new Point(20, 20));
visualZoomController.OnShift(new Point(40, 30));
Assert.AreEqual(new Rectangle(0, 0, 60, 50), visualZoomController.VisualImageFrame, "Frame should not be moved beyond left-top edges.");
visualZoomController.OnShift(new Point(30, 25));
Assert.AreEqual(new Rectangle(10, 5, 60, 50), visualZoomController.VisualImageFrame, "Frame should be shifted on distance (10, 5).");
AssertVisualImageFrameForZoom100(visualZoomController.VisualImage, visualZoomController.VisualImageFrame, sourceImage.Size);
visualZoomController.OnShift(new Point(-200, -150));
Assert.AreEqual(new Rectangle(140, 100, 60, 50), visualZoomController.VisualImageFrame, "Frame should not be moved beyond right-bottom edges.");
AssertVisualImageFrameForZoom100(visualZoomController.VisualImage, visualZoomController.VisualImageFrame, sourceImage.Size);
}
void AssertInitialZoom(Size imageSize, Size imageBoxSize, int expectedZoom, Size expectedVisualSize)
{
var sourceImage = new CodedImage {
Size = imageSize
};
var visualZoomController = new VisualZoomController(sourceImage, imageBoxSize);
Assert.AreEqual(expectedZoom, visualZoomController.ZoomPercent);
Assert.AreEqual(expectedVisualSize, visualZoomController.VisualImage.Size);
}
public void TestVisualZoomController()
{
var sourceImage = CreateSourceImage();
var visualZoomController = new VisualZoomController(sourceImage, new Size(60, 50));
visualZoomController.ZoomPercent = 100;
Assert.AreEqual(new Size(60, 50), visualZoomController.ImageBoxSize);
Assert.AreEqual(100, visualZoomController.ZoomPercent, "Default zoom percent value.");
Assert.AreEqual(ImageResampler.FilterType.Box, visualZoomController.UpscaleFilterType, "Default upscale filter.");
Assert.AreEqual(ImageResampler.FilterType.Lanczos3, visualZoomController.DownscaleFilterType, "Default downscale filter.");
}
public void TestUpdateVisualImage()
{
var sourceImage = CreateSourceImage();
var visualZoomController = new VisualZoomController(sourceImage, new Size(60, 50));
visualZoomController.ZoomPercent = 100;
Assert.AreEqual(100, visualZoomController.ZoomPercent);
Assert.AreEqual(sourceImage.Size, visualZoomController.ZoomedImageSize);
Assert.AreEqual(new Rectangle(0, 0, 60, 50), visualZoomController.VisualImageFrame);
Assert.AreEqual(new Point(0, 0), visualZoomController.ImageLocation);
AssertVisualImageFrameForZoom100(visualZoomController.VisualImage, visualZoomController.VisualImageFrame, sourceImage.Size);
}
public void TestUpdateParameters()
{
var sourceImage = CreateSourceImage();
var visualZoomController = new VisualZoomController(sourceImage, new Size(60, 50));
visualZoomController.ZoomPercent = 100;
Assert.AreEqual(100, visualZoomController.ZoomPercent);
Assert.AreEqual(sourceImage.Size, visualZoomController.ZoomedImageSize);
Assert.AreEqual(new Rectangle(0, 0, 60, 50), visualZoomController.VisualImageFrame);
Assert.AreEqual(new Point(0, 0), visualZoomController.ImageLocation);
visualZoomController.ZoomPercent = 25;
Assert.AreEqual(new Size(50, 37), visualZoomController.ZoomedImageSize);
Assert.AreEqual(new Rectangle(0, 0, 50, 37), visualZoomController.VisualImageFrame);
Assert.AreEqual(new Point(5, 6), visualZoomController.ImageLocation);
visualZoomController.ZoomPercent = 150;
Assert.AreEqual(new Size(300, 225), visualZoomController.ZoomedImageSize);
Assert.AreEqual(new Rectangle(0, 0, 60, 50), visualZoomController.VisualImageFrame);
Assert.AreEqual(new Point(0, 0), visualZoomController.ImageLocation);
}
