32 lines
1.2 KiB
C#
32 lines
1.2 KiB
C#
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using UnityEngine;
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using UnityEngine.UI;
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static class CanvasExtension {
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public static Vector2 SizeToParent(this RawImage image, float padding = 0) {
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float w = 0, h = 0;
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var parent = image.transform.parent.GetComponent<RectTransform>();
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var imageTransform = image.GetComponent<RectTransform>();
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// check if there is something to do
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if (image.texture != null) {
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if (!parent) { return imageTransform.sizeDelta; } //if we don't have a parent, just return our current width;
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padding = 1 - padding;
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float ratio = image.texture.width / (float)image.texture.height;
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var bounds = new Rect(0, 0, parent.rect.width, parent.rect.height);
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if (Mathf.RoundToInt(imageTransform.eulerAngles.z) % 180 == 90) {
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//Invert the bounds if the image is rotated
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bounds.size = new Vector2(bounds.height, bounds.width);
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}
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//Size by height first
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h = bounds.height * padding;
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w = h * ratio;
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if (w < bounds.width * padding) { //If it doesn't fit, fallback to width;
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w = bounds.width * padding;
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h = w / ratio;
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}
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}
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imageTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Horizontal, w);
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imageTransform.SetSizeWithCurrentAnchors(RectTransform.Axis.Vertical, h);
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return imageTransform.sizeDelta;
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}
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}
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