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[feature][API] add SaveAsImage()

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This commit is contained in:
monitor1394
2022-09-22 08:37:56 +08:00
parent eba8986f18
commit bd9a0df52b
8 changed files with 147 additions and 0 deletions
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1
CHANGELOG.md
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@@ -58,6 +58,7 @@
## master
* (2022.09.22) 增加`SaveAsImage()`接口保存图表到图片
* (2022.09.21) 修复`InsertSerie()`接口不刷新图表的问题
* (2022.09.21) 优化`PolarChart`对`Line`热力图的支持
* (2022.09.20) 增加`PolarChart`对`Heatmap`热力图的支持

5
Editor/Charts/BaseChartEditor.cs
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@@ -16,6 +16,7 @@ namespace XCharts.Editor
public static readonly GUIContent btnAddComponent = new GUIContent("Add Main Component", "");
public static readonly GUIContent btnCovertXYAxis = new GUIContent("Covert XY Axis", "");
public static readonly GUIContent btnRebuildChartObject = new GUIContent("Rebuild Chart Object", "");
public static readonly GUIContent btnSaveAsImage = new GUIContent("Save As Image", "");
public static readonly GUIContent btnCheckWarning = new GUIContent("Check Warning", "");
public static readonly GUIContent btnHideWarning = new GUIContent("Hide Warning", "");
}
@@ -279,6 +280,10 @@ namespace XCharts.Editor
{
m_Chart.RebuildChartObject();
}
if (GUILayout.Button(Styles.btnSaveAsImage))
{
m_Chart.SaveAsImage();
}
if (m_CheckWarning)
{
EditorGUILayout.BeginHorizontal();

8
Plugins.meta Normal file
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@@ -0,0 +1,8 @@
fileFormatVersion: 2
guid: 6558d1464a47441d18df18c4a403b2f2
folderAsset: yes
DefaultImporter:
externalObjects: {}
userData:
assetBundleName:
assetBundleVariant:

24
Plugins/Download.jslib Normal file
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@@ -0,0 +1,24 @@
mergeInto(LibraryManager.library, {
Download: function (str, fn) {
var msg = UTF8ToString(str);
var fname = UTF8ToString(fn);
function fixBinary(bin) {
var length = bin.length;
var buf = new ArrayBuffer(length);
var arr = new Uint8Array(buf);
for (var i = 0; i < length; i++) {
arr[i] = bin.charCodeAt(i);
}
return buf;
}
var binary = fixBinary(atob(msg));
var data = new Blob([binary]);
var link = document.createElement('a');
link.download = fname;
link.href = URL.createObjectURL(data);
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
}
});

34
Plugins/Download.jslib.meta Normal file
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@@ -0,0 +1,34 @@
fileFormatVersion: 2
guid: 821b9cd60f13648a396c76481da2191c
PluginImporter:
externalObjects: {}
serializedVersion: 2
iconMap: {}
executionOrder: {}
isPreloaded: 0
isOverridable: 0
platformData:
- first:
Any:
second:
enabled: 0
settings: {}
- first:
Editor: Editor
second:
enabled: 0
settings:
DefaultValueInitialized: true
- first:
Facebook: WebGL
second:
enabled: 1
settings: {}
- first:
WebGL: WebGL
second:
enabled: 1
settings: {}
userData:
assetBundleName:
assetBundleVariant:

10
Runtime/Internal/BaseChart.API.cs
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@@ -588,5 +588,15 @@ namespace XCharts.Runtime
SerieHelper.GetItemColor(out color, out toColor, serie, null, m_Theme);
return color;
}
/// <summary>
/// 保存图表为图片。
/// </summary>
/// <param name="imageType">type of image: png, jpg, exr</param>
/// <param name="savePath">save path</param>
public void SaveAsImage(string imageType = "png", string savePath = "")
{
StartCoroutine(SaveAsImageSync(imageType, savePath));
}
}
}

7
Runtime/Internal/BaseChart.cs
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@@ -1,4 +1,5 @@
using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using UnityEngine;
@@ -741,5 +742,11 @@ namespace XCharts.Runtime
InitComponentHandlers();
InitSerieHandlers();
}
private IEnumerator SaveAsImageSync(string imageType, string path)
{
yield return new WaitForEndOfFrame();
ChartHelper.SaveAsImage(rectTransform, canvas, imageType, path);
}
}
}

58
Runtime/Internal/Utilities/ChartHelper.cs
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@@ -1,5 +1,6 @@
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.RegularExpressions;
using UnityEngine;
@@ -896,5 +897,62 @@ namespace XCharts.Runtime
if (valueOrRate >= -maxRate && valueOrRate <= maxRate) return valueOrRate * total;
else return valueOrRate;
}
[DllImport("__Internal")]
private static extern void Download(string base64str, string fileName);
public static Texture2D SaveAsImage(RectTransform rectTransform, Canvas canvas, string imageType = "png", string path = "")
{
var cam = canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : canvas.worldCamera;
var pos = RectTransformUtility.WorldToScreenPoint(cam, rectTransform.position);
var width = rectTransform.rect.width * canvas.scaleFactor;
var height = rectTransform.rect.height * canvas.scaleFactor;
var posX = pos.x + rectTransform.rect.xMin * canvas.scaleFactor;
var posY = pos.y + rectTransform.rect.yMin * canvas.scaleFactor;
var rect = new Rect(posX, posY, width, height);
var tex = new Texture2D((int) width, (int) height, TextureFormat.RGBA32, false);
tex.ReadPixels(rect, 0, 0);
tex.Apply();
byte[] bytes;
switch (imageType)
{
case "png":
bytes = tex.EncodeToPNG();
break;
case "jpg":
bytes = tex.EncodeToJPG();
break;
case "exr":
bytes = tex.EncodeToEXR();
break;
default:
Debug.LogError("SaveAsImage ERROR: not support image type:" + imageType);
return null;
}
var fileName = rectTransform.name + "." + imageType;
#if UNITY_WEBGL
string base64str = Convert.ToBase64String(bytes);
Download(base64str, fileName);
Debug.Log("SaveAsImage: download by brower:" + fileName);
return tex;
#endif
if (string.IsNullOrEmpty(path))
{
var dir = Application.persistentDataPath + "/SavedImage";
#if UNITY_EDITOR
dir = Application.dataPath + "/../SavedImage";
#else
dir = Application.persistentDataPath + "/SavedImage";
#endif
if (!System.IO.Directory.Exists(dir))
{
System.IO.Directory.CreateDirectory(dir);
}
path = dir + "/" + fileName;
}
System.IO.File.WriteAllBytes(path, bytes);
Debug.Log("SaveAsImage:" + path);
return tex;
}
}
}