ImageViewerManager.cs
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using System;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Networking;
using System.Collections;
using TMPro;
/**
* 功能描述: 图片放大组件
* @author wangQc
* @date 2025/6/4 09:17
*/
public class ImageViewerManager : MonoBehaviour
{
public static ImageViewerManager Instance;
public GameObject panel;
public Image contentBg;
public Image imageContainer;
public Image fullImage;
public TextMeshProUGUI contentTextMeshProUGUI;
public Image logoImage;
public Transform timeGrid;
public GameObject timePrefab;
void Awake()
{
Instance = this;
panel.SetActive(false);
var panelBtn = panel.GetComponent<Button>();
panelBtn.onClick.AddListener(Hide);
}
public void ShowImage(string url,string content,string logo,string time)
{
int initHeight = 180;
int lineHeight = 75; // 每行高
int totalLines = Mathf.CeilToInt(content.Length / 30f);//每行30个字数
int contentBgHeight = totalLines * lineHeight;
if (contentBgHeight <= initHeight)
{
contentBgHeight = initHeight;
}
contentBg.rectTransform.sizeDelta = new Vector2(contentBg.rectTransform.sizeDelta.x, contentBgHeight + 20);
contentTextMeshProUGUI.text = content;
//清空
fullImage.sprite = null;
panel.SetActive(true);
StartCoroutine(ImageLoader.LoadImage(url, fullImage, (width, height) => {
Debug.Log($"图片原始宽高 = {width} x {height}");
float targetWidth = 1160f; // 目标参考宽度
float maxHeight = 2000f; // 高度最大不超过 2000
// 原图比例
float aspectRatio = (float)height / width;
// 计算按目标宽度缩放后的高度
float scaledHeight = targetWidth * aspectRatio;
// 当前缩放系数（默认按 targetWidth 缩放）
float scale = targetWidth / width;
// 如果缩放后的高度 > 2000，高度优先限制
if (scaledHeight > maxHeight)
{
// 按高度 2000 缩放
scale = maxHeight / height;
}
// 如果图片原图宽度 < 1160，放大
else if (width < targetWidth)
{
scale = targetWidth / width;
}
// 最终缩放后的宽高
float finalWidth = width * scale;
float finalHeight = height * scale;
// 应用 sizeDelta
imageContainer.rectTransform.sizeDelta = new Vector2(finalWidth, finalHeight);
Debug.Log($"最终显示宽高 = {finalWidth} x {finalHeight}");
// 加载 logo
StartCoroutine(ImageLoader.LoadImage(logo, logoImage));
//logo根据图片大小缩放比例
// logoImage.rectTransform.sizeDelta = new Vector2(finalHeight * 0.2f, finalHeight * 0.1f);
}));
//时间
foreach (Transform child in timeGrid)
{
Destroy(child.gameObject);
}
time = time.Replace("年", "p").Replace("月", "p").Replace("日", "");
foreach (char c in time)
{
GameObject timeObj = Instantiate(timePrefab, timeGrid);
var timeTextMeshPro = timeObj.GetComponent<TextMeshProUGUI>();
timeTextMeshPro.text = "<sprite name=\""+c+"\">";
}
}
public void Hide()
{
fullImage.sprite = null;
panel.SetActive(false);
//清空原来的时间
foreach (Transform child in timeGrid)
{
Destroy(child.gameObject);
}
}
}