public static PDFJS_Promise <Texture2D> RenderPageToTextureAsync(PDFPage page, float scale = 1.0f)
{
PDFJS_Promise <Texture2D> renderPromise = new PDFJS_Promise <Texture2D>();
#if !UNITY_WEBGL || UNITY_EDITOR
using (PDFRenderer renderer = new PDFRenderer())
{
renderPromise.HasFinished = true;
renderPromise.HasSucceeded = true;
renderPromise.HasReceivedJSResponse = true;
Vector2 size = page.GetPageSize(scale);
renderPromise.Result = renderer.RenderPageToTexture(page, (int)size.x, (int)size.y);
}
#else
RenderPageParameters parameters = new RenderPageParameters(page.NativePointer, null, page.GetPageSize(scale));
PDFJS_Library.Instance.PreparePromiseCoroutine(RenderPageCoroutine, renderPromise, parameters).Start();
#endif
return(renderPromise);
}
Texture2D RenderPageToTexture(PDFPage page)
{
return(RenderPageToTexture(page, (int)page.GetPageSize().x, (int)page.GetPageSize().y, null,
RenderSettings.defaultRenderSettings));
}
byte[] RenderPageToByteArray(PDFPage page)
{
return(RenderPageToByteArray(page, (int)page.GetPageSize().x, (int)page.GetPageSize().y, null,
RenderSettings.defaultRenderSettings));
}
private static IEnumerator RenderPageCoroutine(PDFJS_PromiseCoroutine promiseCoroutine, IPDFJS_Promise promise, object parameters)
{
PDFJS_Promise <PDFJS_WebGLCanvas> renderToCanvasPromise = new PDFJS_Promise <PDFJS_WebGLCanvas>();
PDFJS_Library.Instance.PreparePromiseCoroutine(null, renderToCanvasPromise, null);
IntPtr pageHandle = ((RenderPageParameters)parameters).pageHandle;
Texture2D texture = ((RenderPageParameters)parameters).existingTexture;
Vector2 newtextureSize = ((RenderPageParameters)parameters).newTextureSize;
Vector2 pageSize = PDFPage.GetPageSize(pageHandle, 1.0f);
float scale = 1.0f;
if (texture != null)
{
float wf = pageSize.x / texture.width;
float hf = pageSize.y / texture.height;
scale = 1.0f / Mathf.Max(wf, hf);
}
else
{
float wf = pageSize.x / ((int)newtextureSize.x);
float hf = pageSize.y / ((int)newtextureSize.y);
scale = 1.0f / Mathf.Max(wf, hf);
}
PDFJS_RenderPageIntoCanvas(renderToCanvasPromise.PromiseHandle, pageHandle.ToInt32(), scale);
while (!renderToCanvasPromise.HasReceivedJSResponse)
{
yield return(null);
}
if (renderToCanvasPromise.HasSucceeded)
{
int canvasHandle = int.Parse(renderToCanvasPromise.JSObjectHandle);
using (PDFJS_WebGLCanvas canvas = new PDFJS_WebGLCanvas(new IntPtr(canvasHandle)))
{
PDFJS_Promise <Texture2D> renderToTexturePromise = promise as PDFJS_Promise <Texture2D>;
if (texture == null)
{
texture = new Texture2D((int)newtextureSize.x, (int)newtextureSize.y, TextureFormat.ARGB32, false);
texture.filterMode = FilterMode.Bilinear;
texture.Apply();
}
PDFJS_RenderCanvasIntoTexture(canvasHandle, texture.GetNativeTexturePtr().ToInt32());
renderToTexturePromise.Result = texture;
renderToTexturePromise.HasSucceeded = true;
renderToTexturePromise.HasFinished = true;
promiseCoroutine.ExecuteThenAction(true, texture);
}
}
else
{
PDFJS_Promise <Texture2D> renderToTexturePromise = promise as PDFJS_Promise <Texture2D>;
renderToTexturePromise.Result = null;
renderToTexturePromise.HasSucceeded = false;
renderToTexturePromise.HasFinished = true;
promiseCoroutine.ExecuteThenAction(false, null);
}
}