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In my app I need to pass images from one page to another page image view to display. I am taking a photo from camera and do some stuffs, then I want to send that images to the second page.
if (await isCamAvailable())
{
MediaFile photo1 = await CrossMedia.Current.TakePhotoAsync(new StoreCameraMediaOptions() { Directory = "NewBusiness", Name = "image1.jpg", PhotoSize = PhotoSize.MaxWidthHeight, MaxWidthHeight = 1024, CompressionQuality = 95 });
if (photo1 != null)
{
PhotoImage1.Source = ImageSource.FromStream(() => { return photo1.GetStream(); });
countList.Remove("a");
countList.Add("a");
}
}
Then I am added it to a string array by doing
private List<string> sendImgList = new List<string>();
sendImgList.Add(createImgByteString(photo1.GetStream()));
private string createImgByteString(Stream data)
{
var bytes = new byte[data.Length];
return Convert.ToBase64String(bytes);
}
Then from second page (for testing i just added only one image)
foreach (string ss in imgList) {
byte[] Base64Stream = Convert.FromBase64String(ss);
imgView.Source = ImageSource.FromStream(() => new MemoryStream(Base64Stream));
}
I followed this example. But image not showing.
https://forums.xamarin.com/discussion/139360/how-to-transfer-images-from-one-page-to-another
Also getting this in logcat..
[0:] ImageLoaderSourceHandler: Image data was invalid: Xamarin.Forms.StreamImageSource05-29 14:22:43.758 W/monodroid-assembly( 8737): typemap: unable to find mapping to a Java type from managed type 'System.Byte, mscorlib'
It seems that you used the Media.Plugin . Why don't you pass the ImageSource directly?
If you do want to convert it to byte array , check the following code
public byte[] GetImageStreamAsBytes(Stream input)
{
var buffer = new byte[16*1024];
using (MemoryStream ms = new MemoryStream())
{
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
return ms.ToArray();
}
}
var imgDate = GetImageStreamAsBytes(photo1.GetStream());
It would be better to pass the byte array directly .
The best mode to pass parameter in pages is with Prism.
https://prismlibrary.com/docs/xamarin-forms/navigation/passing-parameters.html
>
_navigationService.NavigateAsync(new Uri("MainPage", new NavigationParameters
{
{ "key_parameter", image }
})));
And on other page:
>
public override void OnNavigatedTo(INavigationParameters parameters)
{
image = (Image)parameters["key_parameter"];
}
Someone helped me get this code for taking a picture using xamarin forms labs camera:
picker = DependencyService.Get<IMediaPicker> ();
task = picker.TakePhotoAsync (new CameraMediaStorageOptions {
DefaultCamera = CameraDevice.Rear,
MaxPixelDimension = 800,
});
img.BackgroundColor = Color.Gray;
Device.StartTimer (TimeSpan.FromMilliseconds (250), () => {
if (task != null) {
if (task.Status == TaskStatus.RanToCompletion) {
Device.BeginInvokeOnMainThread (async () => {
//img.Source = ImageSource.FromStream (() => task.Result.Source);
var fileAccess = Resolver.Resolve<IFileAccess> ();
string imageName = "img_user_" + User.CurrentUser().id + "_" + DateTime.Now.ToString ("yy_MM_dd_HH_mm_ss") + ".jpg";
fileName = imageName;
fileAccess.WriteStream (imageName, task.Result.Source);
fileLocation = fileAccess.FullPath(imageName);
FileStream fileStream = new FileStream(fileAccess.FullPath(imageName), FileMode.Open, System.IO.FileAccess.Read);
imageUrl = (string)test[0]["url"];
img.Source = imageUrl;
});
}
return task.Status != TaskStatus.Canceled
&& task.Status != TaskStatus.Faulted
&& task.Status != TaskStatus.RanToCompletion;
}
return true;
});
It saves the image, but the actual size of the phone picture taken is huge, is there a way to resize it.
UPDATE: The original answer is not useful, see below for updated answer. The issue was the PCL library was very slow and consumed too much memory.
ORIGINAL ANSWER (do not use):
I found an image I/O library, ImageTools-PCL, which I forked on github and trimmed down what wouldn't compile in Xamarin, keeping the modifications to minimum and the result seems to work.
To use it download the linked repository, compile it with Xamarin and add the DLLs from Build folder to your Forms project.
To resize an image you can do this (should fit the context of your question)
var decoder = new ImageTools.IO.Jpeg.JpegDecoder ();
ImageTools.ExtendedImage inImage = new ImageTools.ExtendedImage ();
decoder.Decode (inImage, task.Result.Source);
var outImage = ImageTools.ExtendedImage.Resize (inImage, 1024, new ImageTools.Filtering.BilinearResizer ());
var encoder = new ImageTools.IO.Jpeg.JpegEncoder ();
encoder.Encode (outImage, fileAccess.CreateStream (imageName));
ImageSource imgSource = ImageSource.FromFile (fileAccess.FullPath (imageName));
UPDATED ANSWER:
Get Xamarin.XLabs from nuget, learn about using Resolver, create an IImageService interface with Resize method.
Implementation for iOS:
public class ImageServiceIOS: IImageService{
public void ResizeImage(string sourceFile, string targetFile, float maxWidth, float maxHeight)
{
if (File.Exists(sourceFile) && !File.Exists(targetFile))
{
using (UIImage sourceImage = UIImage.FromFile(sourceFile))
{
var sourceSize = sourceImage.Size;
var maxResizeFactor = Math.Min(maxWidth / sourceSize.Width, maxHeight / sourceSize.Height);
if (!Directory.Exists(Path.GetDirectoryName(targetFile)))
Directory.CreateDirectory(Path.GetDirectoryName(targetFile));
if (maxResizeFactor > 0.9)
{
File.Copy(sourceFile, targetFile);
}
else
{
var width = maxResizeFactor * sourceSize.Width;
var height = maxResizeFactor * sourceSize.Height;
UIGraphics.BeginImageContextWithOptions(new CGSize((float)width, (float)height), true, 1.0f);
// UIGraphics.GetCurrentContext().RotateCTM(90 / Math.PI);
sourceImage.Draw(new CGRect(0, 0, (float)width, (float)height));
var resultImage = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
if (targetFile.ToLower().EndsWith("png"))
resultImage.AsPNG().Save(targetFile, true);
else
resultImage.AsJPEG().Save(targetFile, true);
}
}
}
}
}
Implementation of the service for Android:
public class ImageServiceDroid: IImageService{
public void ResizeImage(string sourceFile, string targetFile, float maxWidth, float maxHeight)
{
if (!File.Exists(targetFile) && File.Exists(sourceFile))
{
// First decode with inJustDecodeBounds=true to check dimensions
var options = new BitmapFactory.Options()
{
InJustDecodeBounds = false,
InPurgeable = true,
};
using (var image = BitmapFactory.DecodeFile(sourceFile, options))
{
if (image != null)
{
var sourceSize = new Size((int)image.GetBitmapInfo().Height, (int)image.GetBitmapInfo().Width);
var maxResizeFactor = Math.Min(maxWidth / sourceSize.Width, maxHeight / sourceSize.Height);
string targetDir = System.IO.Path.GetDirectoryName(targetFile);
if (!Directory.Exists(targetDir))
Directory.CreateDirectory(targetDir);
if (maxResizeFactor > 0.9)
{
File.Copy(sourceFile, targetFile);
}
else
{
var width = (int)(maxResizeFactor * sourceSize.Width);
var height = (int)(maxResizeFactor * sourceSize.Height);
using (var bitmapScaled = Bitmap.CreateScaledBitmap(image, height, width, true))
{
using (Stream outStream = File.Create(targetFile))
{
if (targetFile.ToLower().EndsWith("png"))
bitmapScaled.Compress(Bitmap.CompressFormat.Png, 100, outStream);
else
bitmapScaled.Compress(Bitmap.CompressFormat.Jpeg, 95, outStream);
}
bitmapScaled.Recycle();
}
}
image.Recycle();
}
else
Log.E("Image scaling failed: " + sourceFile);
}
}
}
}
#Sten's answer might encounter out-of-memory problem on some android devices. Here's my solution to implement the ResizeImage function
, which is according to google's "Loading Large Bitmaps Efficiently" document:
public void ResizeImage (string sourceFile, string targetFile, int reqWidth, int reqHeight)
{
if (!File.Exists (targetFile) && File.Exists (sourceFile)) {
var downImg = decodeSampledBitmapFromFile (sourceFile, reqWidth, reqHeight);
using (var outStream = File.Create (targetFile)) {
if (targetFile.ToLower ().EndsWith ("png"))
downImg.Compress (Bitmap.CompressFormat.Png, 100, outStream);
else
downImg.Compress (Bitmap.CompressFormat.Jpeg, 95, outStream);
}
downImg.Recycle();
}
}
public static Bitmap decodeSampledBitmapFromFile (string path, int reqWidth, int reqHeight)
{
// First decode with inJustDecodeBounds=true to check dimensions
var options = new BitmapFactory.Options ();
options.InJustDecodeBounds = true;
BitmapFactory.DecodeFile (path, options);
// Calculate inSampleSize
options.InSampleSize = calculateInSampleSize (options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.InJustDecodeBounds = false;
return BitmapFactory.DecodeFile (path, options);
}
public static int calculateInSampleSize (BitmapFactory.Options options, int reqWidth, int reqHeight)
{
// Raw height and width of image
int height = options.OutHeight;
int width = options.OutWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
int halfHeight = height / 2;
int halfWidth = width / 2;
// Calculate the largest inSampleSize value that is a power of 2 and keeps both
// height and width larger than the requested height and width.
while ((halfHeight / inSampleSize) > reqHeight
&& (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
}
return inSampleSize;
}
You can do this natively for each platform and use an interface. Heres an example for IOS
In your PCL project you need to add an interface
public interface IImageResizer
{
byte[] ResizeImage (byte[] imageData, double width, double height);
}
Then to resize an image in your code, you can load the IOS implementation of that interface using the DependencyService and run the ResizeImage method
var resizer = DependencyService.Get<IImageResizer>();
var resizedBytes = resizer.ResizeImage (originalImageByteArray, 400, 400);
Stream stream = new MemoryStream(resizedBytes);
image.Source = ImageSource.FromStream(stream);
IOS Implementation, add this class to your IOS project.
[assembly: Xamarin.Forms.Dependency (typeof (ImageResizer_iOS))]
namespace YourNamespace
{
public class ImageResizer_iOS : IImageResizer
{
public byte[] ResizeImage (byte[] imageData, double maxWidth, double maxHeight)
{
UIImage originalImage = ImageFromByteArray (imageData);
double width = 300, height = 300;
double maxAspect = (double)maxWidth / (double)maxHeight;
double aspect = (double)originalImage.Size.Width/(double)originalImage.Size.Height;
if (maxAspect > aspect && originalImage.Size.Width > maxWidth) {
//Width is the bigger dimension relative to max bounds
width = maxWidth;
height = maxWidth / aspect;
}else if (maxAspect <= aspect && originalImage.Size.Height > maxHeight){
//Height is the bigger dimension
height = maxHeight;
width = maxHeight * aspect;
}
return originalImage.Scale(new SizeF((float)width,(float)height)).AsJPEG ().ToArray ();
}
public static MonoTouch.UIKit.UIImage ImageFromByteArray(byte[] data)
{
if (data == null) {
return null;
}
MonoTouch.UIKit.UIImage image;
try {
image = new MonoTouch.UIKit.UIImage(MonoTouch.Foundation.NSData.FromArray(data));
} catch (Exception e) {
Console.WriteLine ("Image load failed: " + e.Message);
return null;
}
return image;
}
}
}
An update from the Xamarin Media Plugin allows you to resize the image
https://github.com/jamesmontemagno/MediaPlugin
... barring that, and you need a more generic resize option (say the image comes from a web call, and not the device, then have a look at:
https://github.com/InquisitorJax/Wibci.Xamarin.Images
I am working on webapi. I had optimized the images and saving in folder here. I had uploaded images into one folder before uploading in to the destination folder.
I am optimizing a single image in to 3 different sizes (large, thumbnail, medium) but image sizes are saved in one folder, now I need to make return those images to view page and bind to view page. How can I do that? I am new to webapi.
Here my controllers
public Task<HttpResponseMessage> Post()
{
if (!Request.Content.IsMimeMultipartContent("form-data"))
{
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
var uploadFolder = HostingEnvironment.MapPath("~/App_Sprites/UploadFolder");
uploadFolder = Path.Combine(uploadFolder, DateTime.Now.ToString("yyyyMMddhhmmssfff"));
Directory.CreateDirectory(uploadFolder);
var streamProvider = new PreserveFilenameMultipartFileStreamProvider(uploadFolder);
return Request.Content.ReadAsMultipartAsync(streamProvider).ContinueWith(t =>
{
foreach (var uploadedFile in Directory.GetFiles(uploadFolder))
{
var thumbnail = Path.Combine(uploadFolder, "thumb-" + Path.GetFileName(uploadedFile));
var medium = Path.Combine(uploadFolder, "medium-" + Path.GetFileName(uploadedFile));
var large = Path.Combine(uploadFolder, "large-" + Path.GetFileName(uploadedFile));
ImageTools.Resize(uploadedFile, thumbnail, 80, 80);
ImageTools.Resize(uploadedFile, medium, 48, 48);
ImageTools.Resize(uploadedFile, large, 128, 128);
}
return Request.CreateResponse(HttpStatusCode.Accepted);
});
}
}
and my class file
public class ImageTools
{
public static void Resize(string original, string output, int width, int height)
{
using (var image = Image.FromFile(original))
using (var thumbnail = new Bitmap(width, height))
using (var graphics = Graphics.FromImage(thumbnail))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.DrawImage(image, 0, 0, width, height);
ImageCodecInfo[] info = ImageCodecInfo.GetImageEncoders();
EncoderParameters encoderParameters;
encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 100L);
thumbnail.Save(output, info[1], encoderParameters);
}
}
}
and class file for save
public class PreserveFilenameMultipartFileStreamProvider : MultipartFileStreamProvider
{
public PreserveFilenameMultipartFileStreamProvider(string rootPath)
: base(rootPath)
{
}
public override string GetLocalFileName(HttpContentHeaders headers)
{
return headers.ContentDisposition.FileName.Replace("\"", "");
}
}
finally my layout page
#using (Html.BeginRouteForm("DefaultApi", new { httproute = "", controller = "Upload" }, FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<input type="file" name="image" multiple="multiple" accept="image/*" />
<button type="submit">Upload</button>
}
Here I had the images in folder now I need to save those images as well. I need bind those in my layout page how could I do that?
as of above question i have example sight that helps more follow and look for as above question to implement the coding for your implement
http://www.codeproject.com/Articles/379980/Fancy-ASP-NET-MVC-Image-Uploader?msg=4389108#xx4389108xx
as of above question no problem i think it is increasing with quality option you just have to do simple just decrease the quality make upload image and check it once
public static void Resize(string original, string output, int width, int height)
{
using (var image = Image.FromFile(original))
using (var thumbnail = new Bitmap(width, height))
using (var graphics = Graphics.FromImage(thumbnail))
{
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.DrawImage(image, 0, 0, width, height);
ImageCodecInfo[] info = ImageCodecInfo.GetImageEncoders();
EncoderParameters encoderParameters;
encoderParameters = new EncoderParameters(1);
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality, 80L);
thumbnail.Save(output, info[1], encoderParameters);
}
}
Can anyone help me to take a full page screenshot using Selenium webdriver. I am using c#/Nunit. The current method i am using is not taking the full browser page.
I am using the code below to take the screenshot.
public void TakeScreenShot(IWebDriver webDriver,string testName,string className)
{
string folderName = String.Format("{0}.{1}", className, testName);
// Create Screenshot folder
string createdFolderLocation = CreateFolder(folderName);
// Take the screenshot
Screenshot ss = ((ITakesScreenshot)webDriver).GetScreenshot();
string screenshot = ss.AsBase64EncodedString;
byte[] screenshotAsByteArray = ss.AsByteArray;
// Save the screenshot
ss.SaveAsFile((string.Format("{0}\\{1}",createdFolderLocation,testName + ".Jpeg")), System.Drawing.Imaging.ImageFormat.Jpeg);
ss.ToString();
}
You can use this package https://www.nuget.org/packages/Noksa.WebDriver.ScreenshotsExtensions/
In order to take a screenshot of the entire page, use the VerticalCombineDecorator:
var vcs = new VerticalCombineDecorator(new ScreenshotMaker());
var screen = _driver.TakeScreenshot(vcs);
"Full-page" screenshots are defined by WebDriver to include the entirety of the page displayed in the browser, not the browser chrome (URL bar, toolbar, window resizing handles, and so on). If you don't care about getting the full DOM in your screenshot, you don't need to use WebDriver to get your screenshot. You can use the API of your operating system to handle that instead.
This one I used in our solution:
public byte[] TakeScreenshot()
{
try
{
var getMaxSide = "return Math.max(document.body.scroll{0}, document.body.offset{0}, document.documentElement.client{0}, document.documentElement.scroll{0}, document.documentElement.offset{0})";
var scrollHeight = (Driver as IJavaScriptExecutor).ExecuteScript(string.Format(getMaxSide, "Height"));
var scrollWidth = (Driver as IJavaScriptExecutor).ExecuteScript(string.Format(getMaxSide, "Width"));
Driver.Manage().Window.Size = new Size(int.Parse(scrollWidth.ToString()), int.Parse(scrollHeight.ToString()));
return (Driver as ITakesScreenshot).GetScreenshot().AsByteArray;
}
catch
{
return Array.Empty<byte>();
}
}
Then you can use the result to attach it to e.g. Allure or NUnit test results:
private void AttachScreenshot()
{
var screenshot = _browser?.TakeScreenshot();
if (screenshot.Length > 0)
{
// add screenshot to test results
var path = DateTime.Now.Ticks.ToString() + ".png";
File.WriteAllBytes(path, screenshot);
TestContext.AddTestAttachment(path, "screenshot");
// attach screenshot to Allure report
AllureLifecycle.Instance.AddAttachment("screenshot", "image/png", screenshot);
}
}
Try changing the size of the browser window to something huge before taking your screen shot. I have the size to 10 less than the width, and 10 less than the height. Try adding rather than subtracting.
driver = new FirefoxDriver(firefoxProfile);
if (Config.MAXIMIZE_BROWSER_WINDOW)
{
driver.Manage().Window.Size = new System.Drawing.Size(System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width - 10, System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height - 10);
}
you may try this
IWebDriver driver = new PhantomJSDriver();
driver.Navigate().GoToUrl("http://www.google.com");
((ITakesScreenshot)driver).GetScreenshot().SaveAsFile("image.png", ImageFormat.Png);
Greetings from 2017))!
If the page size is larger than the screen size - you can use the PhantomJS driver (PhantomJS download page)
var fileName = "test.png";
var size = new Size(800, 2000);
var url = "https://stackoverflow.com/";
using (var driver = new PhantomJSDriver())
{
driver.Manage().Window.Size = size;
driver.Navigate().GoToUrl(url);
((ITakesScreenshot)driver)
.GetScreenshot()
.SaveAsFile(fileName, ImageFormat.Png);
driver.Close();
}
I remeber that ((ITakesScreenshot)webDriver).GetScreenshot(); takes full page screenshot but if you have some ajax request and other loading elements you can add scrolling and at the end to wait some seconds, after that you will know that it took full loaded page screenshot.
for (int second = 0;; second++)
{
if (second >= 4)
{
break;
}
((IJavaScriptExecutor)Global.Driver).ExecuteScript("window.scrollBy(0,800)", string.Empty);
Thread.Sleep(500);
}
Thread.Sleep(3000);
Try this hope it will work fine for u.
public void TakeScreenshot(string SSName)
{
try
{
string path = "D:\\WorkSpace\\Screenshot\\";
Screenshot ss = ((ITakesScreenshot)driver).GetScreenshot();
ss.SaveAsFile((path + SSName), System.Drawing.Imaging.ImageFormat.Jpeg);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
throw;
}
}
Changing browser height doesn't always work. This is the solution I used. It scrolls through the page and composes the full-page screenshot.
public static Image TakeFullPageScreenshot(this RemoteWebDriver driver, int maxHeight = 10000)
{
Bitmap fullPageScreenshot = null;
using (var fullMs = new MemoryStream((driver.GetScreenshot()).AsByteArray)) {
fullPageScreenshot = Image.FromStream(fullMs) as Bitmap;
}
var originalPageOffset = driver.GetPageOffset();
var prevPageOffset = 0;
var currentPageOffset = 0;
var scrollLength = (int)(driver.Manage().Window.Size.Height / 1.5);
while (fullPageScreenshot.Height < maxHeight)
{
prevPageOffset = driver.GetPageOffset().Y;
driver.ScrollPageBy(0, scrollLength);
System.Threading.Thread.Sleep(500);
currentPageOffset = driver.GetPageOffset().Y;
if (prevPageOffset == currentPageOffset)
{
break;
}
var pageMovedBy = currentPageOffset - prevPageOffset;
using (var ms = new MemoryStream(driver.GetScreenshot().AsByteArray))
{
using (var viewPortScreenshot = Image.FromStream(ms) as Bitmap)
{
var croppedScreenshot = CropBitmapAtRect(viewPortScreenshot, new Rectangle(0, viewPortScreenshot.Height - pageMovedBy, viewPortScreenshot.Width, pageMovedBy));
var newFullPage = AppendBitmap(fullPageScreenshot, croppedScreenshot);
fullPageScreenshot.Dispose();
fullPageScreenshot = newFullPage;
}
}
}
driver.ScrollPageTo(originalPageOffset.X, originalPageOffset.Y);
return fullPageScreenshot;
}
public static Bitmap CropBitmapAtRect(Bitmap b, Rectangle r)
{
Bitmap nb = new Bitmap(r.Width, r.Height);
using (Graphics g = Graphics.FromImage(nb))
{
g.DrawImage(b, -r.X, -r.Y);
return nb;
}
}
public static Bitmap AppendBitmap(Bitmap source, Bitmap target, int spacing = 0)
{
int w = Math.Max(source.Width, target.Width);
int h = source.Height + target.Height + spacing;
Bitmap bmp = new Bitmap(w, h);
using (Graphics g = Graphics.FromImage(bmp))
{
g.DrawImage(source, 0, 0);
g.DrawImage(target, 0, source.Height + spacing);
}
return bmp;
}
public static void ScrollPageBy(this RemoteWebDriver driver, int x = 0, int y = 0)
{
driver.ExecuteScript(#"window.scroll(window.pageXOffset + arguments[0], window.pageYOffset + arguments[1]);", x, y);
}
public static void ScrollPageTo(this RemoteWebDriver driver, int x = 0, int y = 0)
{
driver.ExecuteScript(#"window.scroll(arguments[0], arguments[1]);", x, y);
}
public static Point GetPageOffset(this RemoteWebDriver driver)
{
var offsetArray = driver.ExecuteScript(#"return [window.pageXOffset, window.pageYOffset];") as ReadOnlyCollection<object>;
var x = (long)offsetArray[0];
var y = (long)offsetArray[1];
return new Point((int)x, (int)y);
}
based on the answer from #Michal Kalous I created an etension class.
This also takes into account the font size currently set in widows and the real viewport size and removes the vertical scrollbar by setting body.style.overflowY to hidden.
Usage
RemoteWebDriver driver = new EdgeDriver();
driver.SetViewportSize(1200, 1200);
driver.Navigate().GoToUrl("https://www.bikereview.info/en/ktm-1290-super-duke-rr-innerhalb-von-48-minuten-ausverkauft.html");
Image tempImage = driver.TakeFullPageScreenshot();
tempImage.Save(#"c:\full.png", ImageFormat.Png);
driver.Close();
driver.Quit();
Extension-Class
using System;
using System.Drawing;
using System.IO;
using OpenQA.Selenium.Remote;
using System.Collections.ObjectModel;
using System.Runtime.InteropServices;
using OpenQA.Selenium;
namespace TestRenderHtmlToPng
{
public static class RemoteWebDriverExtensions
{
public static Image TakeFullPageScreenshot(this RemoteWebDriver driver, int maxHeight = 10000)
{
//Screenshots depend on fontscaleing-property in windows
double DpiScalingFactor = GetDpiScalingFactor();
Bitmap fullPageScreenshot = null;
using (var fullMs = new MemoryStream((driver.GetScreenshotOverflowHidden()).AsByteArray))
{
fullPageScreenshot = Image.FromStream(fullMs) as Bitmap;
}
var originalPageOffset = driver.GetPageOffset();
var prevPageOffset = 0;
var currentPageOffset = 0;
var scrollLength = driver.GetWindowInnerHeight();
while (fullPageScreenshot.Height < maxHeight)
{
prevPageOffset = driver.GetPageOffset().Y;
driver.ScrollPageBy(0, scrollLength);
System.Threading.Thread.Sleep(100);
currentPageOffset = driver.GetPageOffset().Y;
if (prevPageOffset == currentPageOffset)
{
break;
}
var pageMovedBy = currentPageOffset - prevPageOffset;
pageMovedBy = (int)(pageMovedBy * DpiScalingFactor);
using (var ms = new MemoryStream(driver.GetScreenshotOverflowHidden().AsByteArray))
{
Bitmap fullPageScreenshot1 = Image.FromStream(ms) as Bitmap;
using (var viewPortScreenshot = Image.FromStream(ms) as Bitmap)
{
var s = driver.Manage().Window.Size;
var croppedScreenshot = CropBitmapAtRect(viewPortScreenshot, new Rectangle(0, viewPortScreenshot.Height - pageMovedBy, viewPortScreenshot.Width, pageMovedBy));
var newFullPage = AppendBitmap(fullPageScreenshot, croppedScreenshot);
fullPageScreenshot.Dispose();
fullPageScreenshot = newFullPage;
}
}
}
driver.ScrollPageTo(originalPageOffset.X, originalPageOffset.Y);
return fullPageScreenshot;
}
private static Bitmap CropBitmapAtRect(Bitmap b, Rectangle r)
{
Bitmap nb = new Bitmap(r.Width, r.Height);
using (Graphics g = Graphics.FromImage(nb))
{
g.DrawImage(b, -r.X, -r.Y);
return nb;
}
}
private static Bitmap AppendBitmap(Bitmap source, Bitmap target, int spacing = 0)
{
int w = Math.Max(source.Width, target.Width);
int h = source.Height + target.Height + spacing;
Bitmap bmp = new Bitmap(w, h);
using (Graphics g = Graphics.FromImage(bmp))
{
g.DrawImage(source, 0, 0);
g.DrawImage(target, 0, source.Height + spacing);
}
return bmp;
}
private static Screenshot GetScreenshotOverflowHidden(this RemoteWebDriver driver)
{
driver.ExecuteScript(#" document.body.style.overflowY = ""hidden"";");
var s = driver.GetScreenshot();
driver.ExecuteScript(#" document.body.style.overflowY = """";");
return s;
}
private static void ScrollPageBy(this RemoteWebDriver driver, int x = 0, int y = 0)
{
driver.ExecuteScript(#"window.scroll(window.pageXOffset + arguments[0], window.pageYOffset + arguments[1]);", x, y);
}
private static void ScrollPageTo(this RemoteWebDriver driver, int x = 0, int y = 0)
{
driver.ExecuteScript(#"window.scroll(arguments[0], arguments[1]);", x, y);
}
public static void SetViewportSize(this RemoteWebDriver driver, int width, int height)
{
var jsGetPadding = #"return [ window.outerWidth - window.innerWidth,window.outerHeight - window.innerHeight ];";
var paddingArray = driver.ExecuteScript(jsGetPadding) as ReadOnlyCollection<object>;
driver.Manage().Window.Size = new Size(width + int.Parse(paddingArray[0].ToString()), height + int.Parse(paddingArray[1].ToString()));
}
private static Point GetPageOffset(this RemoteWebDriver driver)
{
var offsetArray = driver.ExecuteScript(#"return [window.pageXOffset, window.pageYOffset];") as ReadOnlyCollection<object>;
var x = int.Parse(offsetArray[0].ToString());
var y = int.Parse(offsetArray[1].ToString().Split(',')[0]);
return new Point((int)x, (int)y);
}
private static int GetWindowInnerHeight(this RemoteWebDriver driver)
{
var Value = driver.ExecuteScript(#"return [window.innerHeight];") as ReadOnlyCollection<object>;
return int.Parse(Value[0].ToString());
}
[DllImport("gdi32.dll")]
private static extern int GetDeviceCaps(IntPtr hdc, int nIndex);
public enum DeviceCap
{
VERTRES = 10,
DESKTOPVERTRES = 117,
// http://pinvoke.net/default.aspx/gdi32/GetDeviceCaps.html
// https://stackoverflow.com/questions/5977445/how-to-get-windows-display-settings#answer-21450169
}
private static float GetDpiScalingFactor()
{
Graphics g = Graphics.FromHwnd(IntPtr.Zero);
IntPtr desktop = g.GetHdc();
int LogicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.VERTRES);
int PhysicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.DESKTOPVERTRES);
float ScreenScalingFactor = (float)PhysicalScreenHeight / (float)LogicalScreenHeight;
return ScreenScalingFactor; // 1.25 = 125%
}
}
}
I am using the blitting technique that Jeff from 8bitrocket.com uses for creating tiles. I am trying to paint 2 layers of bitmapdata onto a bitmap. One the first layer is the background ( 1 image). and the second layer is the tiles. In that class below. the updateMap is the method that gets called in the loop to repaint the image.
package com.eapi
{
/**
* ...
* #author Anthony Gordon
*/
import com.objects.XmlManager;
import flash.display.MovieClip;
import flash.display.Sprite;
import flash.events.*;
import flash.display.BitmapData;
import flash.display.Bitmap
import flash.geom.Rectangle;
import flash.geom.Point;
import flash.display.DisplayObject;
public class EngineApi extends MovieClip
{
public var images:Array;
public var world:Array;
//w stands for world, how big it is in columns and rows
private var wCols:Number = 50;
private var wRows:Number = 16;
public var wWidth:Number;
public var wHeight:Number;
//v stands for view, which means your field of view
public var vRows:Number;
public var vCols:Number;
public var vWidth:Number = 540;
public var vHeight:Number = 360;
//how big your indivual tile is
public var tileW:Number = 80;
public var tileH:Number = 80;
public var offsX:Number = 0;
public var offsY:Number = 0;
public var xEnd:Number = 0;
public var yEnd:Number = 0;
public var tilex:int;
public var tiley:int;
public var scrollx:Number = 0;
public var scrolly:Number = 0;
private var screen:Bitmap;
private var canvas:BitmapData;
private var buffer:BitmapData;
public var mapHolder:Array;
private var scrollLoop:Boolean;
private var minLoop:Number;
private var maxLoop:Number;
public var currentMap:Number = 0;
private var queue:Array;
public var currentCol:Number = 0;
public var currentRow:Number = 0;
public var enviroment:Array;
public var currentTileSheet:Number = 0;
private var layer1:Sprite;
private var layer2:Sprite;
private var layer3:Sprite;
private var layer4:Sprite;
private var layer5:Sprite;
public var background:BitmapData
protected var stageObject:Array;
protected var gameObjects:Array;
public function EngineApi(w:Number = 540,h:Number = 360, tw:Number = 50, th:Number = 50)
{
stageObject = new Array();
gameObjects = new Array();
//Add Layers
layer1 = new Sprite();
layer2 = new Sprite();
layer3 = new Sprite();
layer4 = new Sprite();
layer5 = new Sprite();
//end
images = new Array();
vWidth = w;
vHeight = h;
tileW = tw;
tileH = th;
queue = new Array();
mapHolder = new Array();
vCols = Math.floor(vWidth/tileW);
vRows = Math.floor(vHeight/tileH);
wWidth = wCols * tileW;
wHeight = wRows * tileH;
canvas = new BitmapData(vWidth,vHeight,true,0x000000);
buffer = new BitmapData(vWidth + 2 * tileW, vHeight + 2 * tileH ,false,0x000000);
screen = new Bitmap(canvas);
addChild(screen);
addChild(layer1);
addChild(layer2);
addChild(layer3);
addChild(layer4);
addChild(layer5);
}
public function addGameChild(object:IGameObject, layer:Number):void
{
switch(layer)
{
case 1:
layer1.addChild(DisplayObject(object));
break;
case 2:
layer2.addChild(DisplayObject(object));
break;
case 3:
layer3.addChild(DisplayObject(object));
break;
case 4:
layer4.addChild(DisplayObject(object));
break;
case 5:
layer5.addChild(DisplayObject(object));
break;
default:
}
if (object.IsDisplay == true)
gameObjects.push(object);
stageObject.push(object);
}
public function UpDateMap():void
{
offsX += scrollx;
offsY += scrolly;
tilex = int(offsX/tileW);
tiley = int(offsY/tileH);
xEnd = tilex + vWidth;
yEnd = tiley + vHeight;
var tileNum:int;
var tilePoint:Point = new Point(0,0);
var tileRect:Rectangle = new Rectangle(0, 0, tileW, tileH);
var rowCtr:int=0;
var colCtr:int=0;
for (rowCtr=0; rowCtr <= vRows; rowCtr++) {
for (colCtr = 0; colCtr <= vCols; colCtr++) {
currentCol = colCtr+tilex;
currentRow = rowCtr+tiley;
tileNum = mapHolder[currentMap][rowCtr+tiley][colCtr+tilex];
tilePoint.x = colCtr * tileW;
tilePoint.y = rowCtr * tileH;
tileRect.x = int((tileNum % 100))* tileW;
tileRect.y = int((tileNum / 100))* tileH;
buffer.copyPixels(images[currentTileSheet],tileRect,tilePoint);
}
}//End Loop
var bgRect:Rectangle = new Rectangle(0, 0, 544, 510);
var bgPoint:Point = new Point(0, 0);
var bufferRect:Rectangle = new Rectangle(0,0,vWidth,vHeight);
var bufferPoint:Point = new Point();
bufferRect.x = offsX % tileW;
bufferRect.y = offsY % tileH;
canvas.copyPixels(background,bgRect,bgPoint);
canvas.copyPixels(buffer,bufferRect,bufferPoint);
}//End UpdateMap
public function StartRender():void
{
addEventListener(Event.ENTER_FRAME, loop);
}
protected function loop(e:Event):void
{
UpDateMap();
UpdateObjects();
}
protected function UpdateObjects():void
{
for (var i:Number = 0; i < stageObject.length; i++)
{
stageObject[i].UpdateObject();
}
for (var g:Number = 0; g < stageObject.length; g++)
{
if (stageObject[g].Garbage && stageObject[g].IsDisplay)
{
removeChild(DisplayObject(stageObject[g]));
stageObject[g] = null;
}
else if (stageObject[g].Garbage == true && stageObject[g].IsDisplay == false)
{
stageObject[g] = null;
}
}
}
public function StopRender():void
{
removeEventListener(Event.ENTER_FRAME, loop);
}
}
}
It's not the complete code, but if I remove canvas.copyPixels(background,bgRect,bgPoint); or canvas.copyPixels(buffer,bufferRect,bufferPoint); I can see either or. If I paint them both then I can only see the one that painted last. My tile image is 128 x 32. 0 - 3. array 3 is transparent image. I used that hoping that I could see through the image and see the background. I was wrong.
At first it was an all black background, but then I changed the transparent constructor to true on the buffer variable. Now it shows a white background (like the stage), but still no background image.
I'm not sure I completely understand the example, but it looks like the issue is that you're using copyPixels--this should replace the old pixels in the canvas bmp with new values.
Try using draw for the foreground instead:
canvas.copyPixels(background, bgRect, bgPoint);
canvas.draw(buffer, transform, null, null, clipRect);
Also, I'm not sure why you're drawing the background image to a different rect than the foreground? There may be something there.
I took a seperate movieclip and used it as a parallax behind the blitting tiles.