public bool GetTexture(string url, string savePath, RawImage ownerUI, Dictionary <RawImage, string> uiToUrlMap, bool resetUI, Action loadDoneAction)
{
if (m_TextureCache != null)
{
if (m_TextureCache.GetTexture(url, savePath, ownerUI, uiToUrlMap, resetUI, loadDoneAction))
{
return(true);
}
}
var loadTask = new TextureDownloadTask();
loadTask.downloadUrl = url;
loadTask.ownerUI = ownerUI;
loadTask.savePath = savePath;
loadTask.uiToUrlMap = uiToUrlMap;
loadTask.resetUI = resetUI;
loadTask.loadDoneAction = loadDoneAction;
m_WaitDownloadTasks.Enqueue(loadTask);
if (m_CurrentIdleTask > 0)
{
LaunchNextLoadTask();
}
return(true);
}
private void LaunchNextLoadTask()
{
if (m_CurrentIdleTask > 0 && m_WaitDownloadTasks.Count > 0)
{
var tryTimes = m_WaitDownloadTasks.Count;
TextureDownloadTask task = new TextureDownloadTask();
bool needLaunchTask = false;
while (tryTimes > 0)
{
--tryTimes;
task = m_WaitDownloadTasks.Dequeue();
if (m_DownloadingTask.Contains(task.downloadUrl))
{
m_WaitDownloadTasks.Enqueue(task);
}
else
{
needLaunchTask = true;
break;
}
}
if (!needLaunchTask)
{
return;
}
if (m_TextureCache != null)
{
if (m_TextureCache.GetTexture(task.downloadUrl, task.savePath, task.ownerUI, task.uiToUrlMap, task.resetUI, task.loadDoneAction))
{
LaunchNextLoadTask();
return;
}
}
--m_CurrentIdleTask;
m_DownloadingTask.Add(task.downloadUrl);
ActionShcheduler.Instance.RunAsync(() =>
{
var webClient = new WebClient();
byte[] data;
try
{
data = webClient.DownloadData(task.downloadUrl);
var contentType = webClient.ResponseHeaders["Content-Type"];
if (string.IsNullOrEmpty(contentType) || !contentType.StartsWith("image"))
{
data = null;
}
}
catch (Exception e)
{
Debug.LogError("load image from htpp error:" + e);
data = null;
}
ActionShcheduler.Instance.QueueOnMainThread(() =>
{
try
{
if (data != null)
{
CacheTextureToDisk(task.downloadUrl, task.savePath, data);
}
if (data != null && task.ownerUI != null && task.uiToUrlMap.ContainsKey(task.ownerUI) && task.uiToUrlMap[task.ownerUI] == task.downloadUrl)
{
Texture2D texture = new Texture2D(2, 2, TextureFormat.RGB24, false);
texture.LoadImage(data);
texture.Apply(false);
task.ownerUI.texture = texture;
task.uiToUrlMap.Remove(task.ownerUI);
CacheTexture(task.downloadUrl, texture);
if (task.loadDoneAction != null)
{
task.loadDoneAction();
}
}
}
finally
{
++m_CurrentIdleTask;
m_DownloadingTask.Remove(task.downloadUrl);
LaunchNextLoadTask();
}
});
});
}
}
