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Applitools Eyes SDK for Selenium Java WebDriver
/*
* Applitools software.
*/
package com.applitools.eyes;
import com.applitools.utils.ArgumentGuard;
import com.applitools.utils.ImageUtils;
import org.openqa.selenium.Dimension;
import org.openqa.selenium.Point;
import org.openqa.selenium.WebElement;
import java.awt.image.BufferedImage;
import java.util.Iterator;
public class EyesWebDriverScreenshot extends EyesScreenshot {
private enum ScreenshotType {VIEWPORT, ENTIRE_FRAME}
private final Logger logger;
private final EyesWebDriver driver;
private final FrameChain frameChain;
private final Location scrollPosition;
private final ScreenshotType screenshotType;
// The top/left coordinates of the frame window(!) relative to the top/left
// of the screenshot. Used for calculations, so can also be outside(!)
// the screenshot.
private final Location frameLocationInScreenshot;
// The part of the frame window which is visible in the screenshot
private final Region frameWindow;
private static Location calcFrameLocationInScreenshot(Logger logger,
FrameChain frameChain, ScreenshotType screenshotType) {
logger.verbose("Getting first frame..");
Iterator frameIterator = frameChain.iterator();
Frame firstFrame = frameIterator.next();
logger.verbose("Done!");
Location locationInScreenshot = new Location(firstFrame.getLocation());
// We only consider scroll of the default content if this is
// a viewport screenshot.
if (screenshotType == ScreenshotType.VIEWPORT) {
Location defaultContentScroll = firstFrame
.getParentScrollPosition();
locationInScreenshot.offset(-defaultContentScroll.getX(),
-defaultContentScroll.getY());
}
logger.verbose("Iterating over frames..");
Frame frame;
while (frameIterator.hasNext()) {
logger.verbose("Getting next frame...");
frame = frameIterator.next();
logger.verbose("Done!");
Location frameLocation = frame.getLocation();
// For inner frames we must consider the scroll
Location frameParentScrollPosition = frame
.getParentScrollPosition();
// Offsetting the location in the screenshot
locationInScreenshot.offset(
frameLocation.getX() - frameParentScrollPosition.getX(),
frameLocation.getY() - frameParentScrollPosition.getY());
}
logger.verbose("Done!");
return locationInScreenshot;
}
/**
* @param logger A Logger instance.
* @param driver The web driver used to get the screenshot.
* @param image The actual screenshot image.
* @param screenshotType (Optional) The screenshot's type (e.g.,
* viewport/full page).
* @param frameLocationInScreenshot (Optional) The current frame's
* location in the screenshot.
*/
public EyesWebDriverScreenshot(Logger logger, EyesWebDriver driver,
BufferedImage image,
ScreenshotType screenshotType,
Location frameLocationInScreenshot) {
super(image);
ArgumentGuard.notNull(logger, "logger");
ArgumentGuard.notNull(driver, "driver");
this.logger = logger;
this.driver = driver;
ScrollPositionProvider positionProvider =
new ScrollPositionProvider(logger, driver);
RectangleSize viewportSize = driver.getDefaultContentViewportSize();
frameChain = driver.getFrameChain();
// If we're inside a frame, then the frame size is given by the frame
// chain. Otherwise, it's the size of the entire page.
RectangleSize frameSize;
if (frameChain.size() != 0) {
frameSize = frameChain.getCurrentFrameSize();
} else {
// get entire page size might throw an exception for applications
// which don't support Javascript (e.g., Appium). In that case
// we'll use the viewport size as the frame's size.
RectangleSize fs;
try {
fs = positionProvider.getEntireSize();
} catch (EyesDriverOperationException e) {
fs = viewportSize;
}
frameSize = fs;
}
// Getting the scroll position. For native Appium apps we can't get the
// scroll position, so we use (0,0)
Location sp;
try {
sp = positionProvider.getCurrentPosition();
} catch (EyesDriverOperationException e) {
sp = new Location(0, 0);
}
scrollPosition = sp;
if (screenshotType == null) {
if (image.getWidth() <= viewportSize.getWidth()
&& image.getHeight() <= viewportSize.getHeight()) {
screenshotType = ScreenshotType.VIEWPORT;
} else {
screenshotType = ScreenshotType.ENTIRE_FRAME;
}
}
this.screenshotType = screenshotType;
// This is used for frame related calculations.
if (frameLocationInScreenshot == null) {
if (frameChain.size() > 0) {
frameLocationInScreenshot =
calcFrameLocationInScreenshot(logger, frameChain,
this.screenshotType);
} else {
frameLocationInScreenshot = new Location(0, 0);
if (this.screenshotType == ScreenshotType.VIEWPORT) {
frameLocationInScreenshot.offset(-scrollPosition.getX(),
-scrollPosition.getY());
}
}
}
this.frameLocationInScreenshot = frameLocationInScreenshot;
logger.verbose("Calculating frame window..");
this.frameWindow = new Region(frameLocationInScreenshot, frameSize);
this.frameWindow.intersect(new Region(0, 0, image.getWidth(),
image.getHeight()));
if (this.frameWindow.getWidth() <= 0 ||
this.frameWindow.getHeight() <= 0) {
throw new EyesException("Got empty frame window for screenshot!");
}
logger.verbose("Done!");
}
/**
* See {@link #EyesWebDriverScreenshot(Logger, EyesWebDriver, BufferedImage, ScreenshotType, Location)}.
* {@code screenshotType} defaults to {@code null}.
* {@code frameLocationInScreenshot} defaults to {@code null}.
*
* @param logger A Logger instance.
* @param driver The web driver used to get the screenshot.
* @param image The actual screenshot image.
*/
public EyesWebDriverScreenshot(Logger logger, EyesWebDriver driver,
BufferedImage image) {
this(logger, driver, image, null, null);
}
// TODO replace "entireFrameSize" as frame window ctor identifier
/**
* Creates a frame(!) window screenshot.
* @param logger A Logger instance.
* @param driver The web driver used to get the screenshot.
* @param image The actual screenshot image.
* @param entireFrameSize The full internal size of the frame.
*/
public EyesWebDriverScreenshot(Logger logger, EyesWebDriver driver,
BufferedImage image,
RectangleSize entireFrameSize) {
super(image);
ArgumentGuard.notNull(driver, "logger");
ArgumentGuard.notNull(driver, "driver");
ArgumentGuard.notNull(entireFrameSize, "entireFrameSize");
this.logger = logger;
this.driver = driver;
frameChain = driver.getFrameChain();
// The frame comprises the entire screenshot.
screenshotType = ScreenshotType.ENTIRE_FRAME;
scrollPosition = new Location(0, 0);
frameLocationInScreenshot = new Location(0, 0);
frameWindow = new Region(new Location(0, 0), entireFrameSize);
}
/**
* @return The region of the frame which is available in the screenshot,
* in screenshot coordinates.
*/
public Region getFrameWindow() {
return frameWindow;
}
/**
* @return A copy of the frame chain which was available when the
* screenshot was created.
*/
public FrameChain getFrameChain() {
return new FrameChain(logger, frameChain);
}
@Override
public EyesWebDriverScreenshot getSubScreenshot(Region region,
CoordinatesType coordinatesType, boolean throwIfClipped) {
logger.verbose(String.format("getSubScreenshot([%s], %s, %b)",
region, coordinatesType, throwIfClipped));
ArgumentGuard.notNull(region, "region");
ArgumentGuard.notNull(coordinatesType, "coordinatesType");
// We calculate intersection based on as-is coordinates.
Region asIsSubScreenshotRegion = getIntersectedRegion(region,
coordinatesType, CoordinatesType.SCREENSHOT_AS_IS);
if (asIsSubScreenshotRegion.isEmpty() ||
(throwIfClipped &&
!asIsSubScreenshotRegion.getSize().equals(
region.getSize()))) {
throw new OutOfBoundsException(String.format(
"Region [%s, (%s)] is out of screenshot bounds [%s]",
region, coordinatesType, frameWindow));
}
BufferedImage subScreenshotImage =
ImageUtils.getImagePart(image, asIsSubScreenshotRegion);
// The frame location in the sub screenshot is the negative of the
// context-as-is location of the region.
Location contextAsIsRegionLocation =
convertLocation(asIsSubScreenshotRegion.getLocation(),
CoordinatesType.SCREENSHOT_AS_IS,
CoordinatesType.CONTEXT_AS_IS);
Location frameLocationInSubScreenshot =
new Location(-contextAsIsRegionLocation.getX(),
-contextAsIsRegionLocation.getY());
EyesWebDriverScreenshot result = new EyesWebDriverScreenshot(logger,
driver, subScreenshotImage, screenshotType,
frameLocationInSubScreenshot);
logger.verbose("Done!");
return result;
}
@Override
protected Location convertLocation(Location location,
CoordinatesType from, CoordinatesType to) {
ArgumentGuard.notNull(location, "location");
ArgumentGuard.notNull(from, "from");
ArgumentGuard.notNull(to, "to");
Location result = new Location(location);
if (from == to) {
return result;
}
// If we're not inside a frame, and the screenshot is the entire
// page, then the context as-is/relative are the same (notice
// screenshot as-is might be different, e.g.,
// if it is actually a sub-screenshot of a region).
if (frameChain.size() == 0 &&
screenshotType == ScreenshotType.ENTIRE_FRAME) {
if ((from == CoordinatesType.CONTEXT_RELATIVE
|| from == CoordinatesType.CONTEXT_AS_IS)
&& to == CoordinatesType.SCREENSHOT_AS_IS) {
// If this is not a sub-screenshot, this will have no effect.
result.offset(frameLocationInScreenshot.getX(),
frameLocationInScreenshot.getY());
} else if (from == CoordinatesType.SCREENSHOT_AS_IS &&
(to == CoordinatesType.CONTEXT_RELATIVE
|| to == CoordinatesType.CONTEXT_AS_IS)){
result.offset(-frameLocationInScreenshot.getX(),
-frameLocationInScreenshot.getY());
}
return result;
}
switch (from) {
case CONTEXT_AS_IS:
switch (to) {
case CONTEXT_RELATIVE:
result.offset(scrollPosition.getX(),
scrollPosition.getY());
break;
case SCREENSHOT_AS_IS:
result.offset(frameLocationInScreenshot.getX(),
frameLocationInScreenshot.getY());
break;
default:
throw new CoordinatesTypeConversionException(from, to);
}
break;
case CONTEXT_RELATIVE:
switch (to) {
case SCREENSHOT_AS_IS:
// First, convert context-relative to context-as-is.
result.offset(-scrollPosition.getX(),
-scrollPosition.getY());
// Now convert context-as-is to screenshot-as-is.
result.offset(frameLocationInScreenshot.getX(),
frameLocationInScreenshot.getY());
break;
case CONTEXT_AS_IS:
result.offset(-scrollPosition.getX(),
-scrollPosition.getY());
break;
default:
throw new CoordinatesTypeConversionException(from, to);
}
break;
case SCREENSHOT_AS_IS:
switch (to) {
case CONTEXT_RELATIVE:
// First convert to context-as-is.
result.offset(-frameLocationInScreenshot.getX(),
-frameLocationInScreenshot.getY());
// Now convert to context-relative.
result.offset(scrollPosition.getX(),
scrollPosition.getY());
break;
case CONTEXT_AS_IS:
result.offset(-frameLocationInScreenshot.getX(),
-frameLocationInScreenshot.getY());
break;
default:
throw new CoordinatesTypeConversionException(from, to);
}
break;
default:
throw new CoordinatesTypeConversionException(from, to);
}
return result;
}
@Override
public Location getLocationInScreenshot(Location location,
CoordinatesType coordinatesType) throws OutOfBoundsException {
location = convertLocation(location, coordinatesType,
CoordinatesType.SCREENSHOT_AS_IS);
// Making sure it's within the screenshot bounds
if (!frameWindow.contains(location)) {
throw new OutOfBoundsException(String.format(
"Location %s ('%s') is not visible in screenshot!", location,
coordinatesType));
}
return location;
}
@Override
protected Region getIntersectedRegion(Region region,
CoordinatesType originalCoordinatesType,
CoordinatesType resultCoordinatesType) {
if (region.isEmpty()) {
return new Region(region);
}
Region intersectedRegion = convertRegionLocation(region,
originalCoordinatesType, CoordinatesType.SCREENSHOT_AS_IS);
switch (originalCoordinatesType) {
// If the request was context based, we intersect with the frame
// window.
case CONTEXT_AS_IS:
case CONTEXT_RELATIVE:
intersectedRegion.intersect(frameWindow);
break;
// If the request is screenshot based, we intersect with the image
case SCREENSHOT_AS_IS:
intersectedRegion.intersect(new Region(0, 0,
image.getWidth(), image.getHeight()));
break;
default:
throw new CoordinatesTypeConversionException(
String.format("Unknown coordinates type: '%s'",
originalCoordinatesType));
}
// If the intersection is empty we don't want to convert the
// coordinates.
if(intersectedRegion.isEmpty()) {
return intersectedRegion;
}
// Converting the result to the required coordinates type.
intersectedRegion = convertRegionLocation(intersectedRegion,
CoordinatesType.SCREENSHOT_AS_IS, resultCoordinatesType);
return intersectedRegion;
}
@SuppressWarnings("UnusedDeclaration")
/**
* Gets the elements region in the screenshot.
*
* @param element The element which region we want to intersect.
* @return The intersected region, in {@code SCREENSHOT_AS_IS} coordinates
* type.
*/
public Region getIntersectedRegion(WebElement element) {
ArgumentGuard.notNull(element, "element");
Point pl = element.getLocation();
Dimension ds = element.getSize();
Region elementRegion = new Region(pl.getX(), pl.getY(), ds.getWidth(),
ds.getHeight());
// Since the element coordinates are in context relative
elementRegion = getIntersectedRegion(elementRegion,
CoordinatesType.CONTEXT_RELATIVE);
if (!elementRegion.isEmpty()) {
elementRegion = convertRegionLocation(elementRegion,
CoordinatesType.CONTEXT_RELATIVE,
CoordinatesType.SCREENSHOT_AS_IS);
}
return elementRegion;
}
}
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