public void TestMeasureOverride()
{
var rand = new Random();
var imageSize = new Vector3(100, 50, 0);
var sprite = new Sprite {
Region = new Rectangle(0, 0, (int)imageSize.X, (int)imageSize.Y), Borders = new Vector4(1, 2, 3, 4)
};
var image = new ImageElement {
Source = (SpriteFromTexture)sprite
};
// Fixed sized
image.StretchType = StretchType.None;
image.Measure(rand.NextVector3());
Assert.Equal(imageSize, image.DesiredSizeWithMargins);
// Uniform sized
image.StretchType = StretchType.Uniform;
image.Measure(new Vector3(50));
Assert.Equal(new Vector3(50, 25, 0), image.DesiredSizeWithMargins);
// Uniform to fill sized
image.StretchType = StretchType.UniformToFill;
image.Measure(new Vector3(50));
Assert.Equal(new Vector3(100, 50, 0), image.DesiredSizeWithMargins);
// Fill on stretch
image.StretchType = StretchType.FillOnStretch;
image.Measure(new Vector3(50));
Assert.Equal(new Vector3(50, 25, 0), image.DesiredSizeWithMargins);
// Fill
image.StretchType = StretchType.Fill;
image.Measure(new Vector3(50));
Assert.Equal(new Vector3(50, 50, 0), image.DesiredSizeWithMargins);
// Test minimal size due to borders
image.StretchType = StretchType.Fill;
image.Measure(new Vector3());
Assert.Equal(new Vector3(4, 6, 0), image.DesiredSizeWithMargins);
// Test with infinite value
for (var type = 0; type < 5; ++type)
{
TestMeasureOverrideInfiniteValues((StretchType)type);
}
// Test stretch directions
image.StretchType = StretchType.Fill;
image.StretchDirection = StretchDirection.DownOnly;
image.Measure(new Vector3(200, 300, 220));
Assert.Equal(new Vector3(100, 50, 0), image.DesiredSizeWithMargins);
image.Measure(new Vector3(20, 15, 30));
Assert.Equal(new Vector3(20, 15, 0), image.DesiredSizeWithMargins);
image.StretchDirection = StretchDirection.UpOnly;
image.Measure(new Vector3(200, 300, 220));
Assert.Equal(new Vector3(200, 300, 0), image.DesiredSizeWithMargins);
image.Measure(new Vector3(20, 30, 22));
Assert.Equal(new Vector3(100, 50, 0), image.DesiredSizeWithMargins);
}
private void TestMeasureOverrideInfiniteValues(StretchType stretch)
{
var imageSize = new Vector3(100, 50, 0);
var sprite = new Sprite {
Region = new Rectangle(0, 0, (int)imageSize.X, (int)imageSize.Y), Borders = new Vector4(1, 2, 3, 4)
};
var image = new ImageElement {
Source = (SpriteFromTexture)sprite, StretchType = stretch
};
image.Measure(new Vector3(float.PositiveInfinity));
Assert.Equal(imageSize, image.DesiredSizeWithMargins);
image.Measure(new Vector3(150, float.PositiveInfinity, 10));
Assert.Equal(stretch == StretchType.None ? imageSize : new Vector3(150, 75, 0), image.DesiredSizeWithMargins);
}