Plasma/Plasma UX improvement project

About

Plasma UX improvement is a student project undertaken by a group from The Norwegian School of Information Technology in Oslo, Norway. The project is organized as a part-time internship at Nokia Qt Development Frameworks in Oslo. The project started in January 2012 and will finish in mid May 2012.

Goal

The goal of the project is to analyze the Plasma Active User Interface, identify elements with potential for improvement, and create prototypes of alternative solutions with the goal of improving user experience.

Areas of Focus

The project has chosen to focus on some key elements of the interface. The elements chosen are all central ones which most users will interact with frequently. Suggestions for improvements are based modern theories of user interface design for touch devices.

Browser

• Browser design document below

Keyboard

• Keyboard design document below

Peek&Launch

• Drag and snap functionality
• Tap and double-tap function

Activity Selection

• Opening adjustments
• Size of activity area
• Tap to open

Note: This page will be updated as work progresses, and code will be made available.

Browser Design Document

Introduction

This document covers the in-depth design aspects of the new Qt Browser, planned for prototyping and implementation on the WeTab.

Why improve the browser usability?

The browser is one of many things on the Plasma Active user interface that utilizes many of the elements that we want to improve in out project. It has the ground structure for a functioning application, yet lacks finesse in intuitive control. Things such as buttons, text fields, and scrolling, zooming as well as other functions could be improved greatly with simple design conventions and structuring.

Issues with the current browser

As it stands, the Plasma Active 2 web browser is operative and works to the extent that it needs to, but certain things could be changed in order to improve the user experience. They are as follows:

Icon conventions

The icons in the browser follow new icon conventions, not really descriptive of their functions. In their own right, they make sense from a user perspective, but only if the user unlearns the icon conventions of previous browser experiences. Some issues with icons are not apparent in the browser alone but throughout the Plasma Active interface. For example, the “Magnifying glass” is an icon used to imply search functions. Placing such an icon in a text field would be sufficient to tell the user that this field is for searching. Other times however, the magnifying glass presents the option of zooming in the field of view. Also, when searching, the icon that implies that a search is being conducted is in the shape of a flashlight. This could leave users to believe that looking for such an icon would lead them to a search function, when in reality it may as well zoom in the view for them.

In the browser, the address bar where the URL for websites are written has an icon for deleting the current content of this bar (represented as a black circle with a white cross in it). Beside the URL bar on the right side (thus close to said icon) is the “stop” icon for canceling the loading of a website. This icon differs in size, but is otherwise identical to the “clear address field” button. Placed so closely together, this can cause confusion in users.

Another concern with central icon elements is the “Favorites” button, displayed in the browser as a heart symbol. Logic makes this a viable choice for a favorite-label, but seeing as almost browsers that leaves the user a choice for marking material in this way (Youtube, Spotify, and various internet browsers) use stars symbols to mark a favorite, we feel that this might be the safe approach in this case too. We want to make users feel like they can understand any interface from the get-go, but we also want people to recognize familiar elements.

The issues with the icons are not the most important aspects of this browser prototype (as it will represent designs in the browser alone), but in a tablet in general, icons are more often interpreted at first glance, making icons, and their descriptive nature very important to keep organized and uniform.

Responsive interface elements

A loading icon is a good way to show the user that something is happening, and that he can now patiently wait, as there is no delay of any kind, but his request is being processed. Early testing done by the team members showed that the lack of response from the buttons and requests actually made the user click the same buttons over and over, resulting in a pile-up of processes (i.e. opening 10 browsers at once or pressing “search” several times, resetting the search query over and over instead of carrying it out).

The same lack of response is found in the pressing of buttons. The natural way to go about this is giving the user a sensation through touch or visually, whenever a button is pressed. A subtle vibration from the device is not possible with the current hardware, but visually showing the button changing shape/color certainly is. Even small changes to the element give the user a feeling of response from the device, telling the user that his input has been received.

As far as buttons go, borders are very important. The user must always know what areas of the screen will record input. All buttons should have a border, representing the area of where the button can be touched in order to be activated. Borders also help differentiate between what is an idle icon and what is an actual button.

Scrolling and zooming

Navigating through a website or online content on a touch screen usually entails these two things. We read a text, and we scroll down almost as we would trace our text in a book with the tip of our fingers. The hand-to-eye coordination is in perfect balance, because the scrolling sensitivity feels as if the activity itself was affected by natural physics. Scrolling with Plasma Active, there is not always a way to scroll with the finger. Sometimes, the scroll bar on the right side of the screen has to be used, and it’s not always a comfortable way to navigate. What used to be natural for us is now mechanically boxed into this feature that is both inaccurate and oversensitive. We want to standardize the way users scroll, so that all scrollable planes are using the same option, and will never force the user to result to using a scrolling bar.

Zooming is also problematic because it leaves the user with the choice of pressing a button to enlarge the window, yet to a predefined default. Being that web pages are all different in shape and size, this option could mean the content is enlarged too much, or too little. The dominant design for zooming in most every device these days is the “pinch-zoom”, where the user can change the size of the field of view by performing a “squeezing” motion with two fingers pressing toward each other or away from each other (while touching both fingers to the screen). This will respectively zoom in and out.

The Peek & Launch bar vs. a whole new bar

An element that is always present on the Plasma Active is the “Peek & Launch” bar (P&L). This bar is part of the global interface, meaning that whatever the user is doing on the tab, this tab is always present, and ready for use. The bar itself is hidden on the whole width of the top of the screen.

The initial idea for an earlier design was to change the P&L bar to accommodate use of the browser, making the P&L context sensitive to the application that the user was in. This has been changed to a general bar for the browser alone, functioning in the same way as the P&L, but not replacing it. We found this to be a better solution for the project. For changes to the P&L bar directly, see its respective design document.

Functions of the dropdown bar

With the top toolbar ever present on screen, this means that it should be able to present the user with options that are relevant to the task he is currently doing. The design for this bar will rely heavily on the design of the P&L bar, acting similarly to it in a lot of ways. Seeing as the bar can be pulled down in two “steps”, the first one revealing the current open programs (as well as the system tray) and the second level of the bar (revealed when pulled down even further) revealing programs available to open, this “tiered” dropdown is a good idea for organizing elements.

For instance, the idea of the browser using this mechanic is to have the first level of the dropdown show options as such you would have in a normal browser, like a back and forward button, a search bar, an address bar, and a refresh button. To be clear, this is the part of the bar that is shown on screen at all times, and is not dropped down at will. For reference, we call this UI level 1.

Visual design and explanation

For the first image, we look at the interface for the first level of the bar, and how it looks on screen.

Fig.1: The first level

The first level consists of 6 elements:

• A slider for going back or forward one page/tab (bottom left slider)
• A toggle slider for activating tab slide or site slide (top left slider)
• An address bar for entering URL’s (top text field)
• A free search for keywords (bottom text field)
• A button with a “stop” and a “refresh” function (seen here as a green button.
• An indented tray with two functions (subject to change): Favorite current site (star icon) and open new tab (plus icon)

While these are the standard options for browsing, dragging the bar further down reveals the second level of options.

Fig.2: The second level

This level is simply an extension of the first one, but while the first navigates the existing site, this next level organizes the sites that are currently open, but not in the main view. Simply put, they are what the industry calls “tabs”, a number of websites that are open, but minimized for the sake of watching the currently selected site (without having to navigate away from the other sites). For the sake of reference, there are three sites open in the list of tabs, plus a fourth empty one, that opens up a fresh site and adds it to the tab “wheel”. This list is scrollable, meaning that the user can place more tabs on this bar than currently in the field of vision.

In this image, the contents of the windows labeled “website preview” are to feature small screens of the site in question.

To the far right, a “new tab” label is accompanied by an empty tab window with a plus (+) sign on it. Clicking this will put the site that is currently in view into the tabs list, and the main view will change into an empty site, where the user can search for new content on the web.

Dragging the bar down further reveals the topmost and final bar, level three.

Fig.3: The third level

Seen here on the bottom is part of the second level, shown purposely for reference. The top is, like the first two levels, connected, and supplies even more options for the user:

• The leftmost field is a scrolling wheel, where activities are listed. These activities are created from the activities already created outside of the browser. Selecting each activity brings up a whole new set of tabs, tabs that are saved there after each session, so that every time the user selects his “Work” tab (example), tabs that he previously had open the last time he was browsing in this activity are still there. Next to this, are two buttons (plus and minus icons) that either adds a new activity (to browser only) or removes an activity. When pressed, the buttons prompt the user with a name selection for the new activity, or a removal assurance prompt as to avoid misclicking, deleting tabs unintentionally.
• The other field more to the right is a list of favorites. As mentioned earlier, these are selected by the user by simply pressing the star icon in the indented tray (level one) while on that site, marking it a favorite, and putting that website in the favorites list. (List is meant to show proper names for websites, current “WEBSITE” labeling is for demonstrative purposes only)
• To the right of the favorites list, there is also a button with a plus (+) sign for adding favorites independently.
• Above this button is a toggle slider that selects the favorites that the user has saved based on two categories: “All”, which lists every site that the user has listed as a favorite, and “Act.”, short for “Activity”, which lists the favorites selected while in a specific activity. These favorites are the ones that were marked accordingly while in an activity.
• Below these is the filter text field, filtering favorite websites as the user inputs texts, making it easier to find specific favorites as the list grows larger.

The toggle philosophy

Being that “toggle buttons” (buttons with binary states) are what makes the most prominent addition to the new changes is because of an attempt to improve the UI to have one set of tools fit many different types of users. The idea is to create shortcuts to certain functions, in line with the theory of NUI; A user interface that anyone can easily pick up, but can also be mastered to a point where an advanced user has the functions available to them to make the experience feel more adaptive to the user’s needs. By having toggle buttons, we hope to do just that. Having the user discover what features are available to him/her while having them choose to apply them as they go, or choose not to. Not throw tons of tools at them at once, leaving them overwhelmed.

Browsing the net is often a speedy ordeal, and taking travel distance into account, changing modes and toggle on/off functions with the three-step bar could take more time than a user wants. For the future we plan to look into adding a third setting to the toggle button on the back/forth slider so that activities can also be changed on the fly. (as well as improvements to other functions in the browser)

Back/forward buttons vs. sliders

Adding the slider as some of the core browsing functionality is based on the notion of having each session of browsing structured as pages in a book. By removing buttons, we also remove the feeling of having the back and forth navigating feel imprecise. Often, going back through more than one site quickly means that we click the back button repeatedly without allowing the sites to load along the way. Just as often, we overshoot or miss the site we wanted to end up on. By introducing the slider button, we make back/forth navigating a breeze. By simply having each site present an image, we can create the notion of going back through a series of images, each one a stamp of however the site looked when you left it. Flicking the slider bar will make the screen slide to either side, with the sliding motion corresponding to the motion of the slider bar.

To elaborate, imagine that the site currently being viewed is covering the entire screen (except for the user interface elements). The borders of the screen are what frame the site itself. Imagine then, that on each side of this one site, another is connected, at the edge of the one that is being viewed. If you were going ever “deeper” into a website, you would probably only have other sites connected to the left side of the screen, i.e. the previous sites you visited. If you were to go back to any of these sites however, you would have sites connected to the right side as well. Consider it as a film reel, where you only view one frame at once, but on each side, more frames are connected to it.

This analogy brings us to the use of the back/forward slider. The slider is what allows the user to flick back and forth and even scroll through the reel of sites visited. Flicking the slider will take you back (or forward depending on the direction) one step, with a transition showing the current site sliding off to the right, while at the same time, the site that is in the previous slot of the “film reel” is being slid in from the left. The edges of each site are connected.

The user can also drag and hold the slider to one direction to scroll through the sites faster. While the reel of sites are being scrolled through, each site is in frame for half a second, before being slid away, giving the new entry half a second to stay on screen, et cetera. Letting go of the slider will take the site that is closest to being viewed at that time, and put in on screen (giving sites that are being less than halfway out of focus a chance to be selected).

What’s important to note is that the sites aren’t viewed in full or even buffered, but are rather given a screenshot image of what the site looked like on screen at the time it was navigated away from. They are simply there to give a visual reminder for the user, as we all know that holding down the back button in traditional browsers tend to have long titles that are cut off or in other ways fail to indicate what the site was presenting. This is why images are better.

Circular browsing

Having an organized design is the quintessence of what Plasma Active is. It takes the tediousness out of what we humans have used for so long: Lists. We list things because it helps us remember, and because it gives us a sequential approach to handling tasks, be it work-related or domestic. The problem with lists is that they start and end, and although it is a bold statement to say that anything acts otherwise, it is important in this day and age of technology to challenge what we conceive as “the best way”. The very way we organize our day is done through sequential lists, and this is fine. However, in some instances of the technology, it’s best to conceive something as a cycle. We believe that when browsing through anything, the feeling of something being part of a cycle appeals to us as human beings. You always end up back where you started, but never because you go the wrong way. To allow ourselves to be poetic, it simply marks the end of a journey. One that takes you back home, to where you feel like you have had a good trip. It is a trip you can take again, and see whatever you saw the previous time, or you can take a slightly different route, exploring new things, yet knowing that all the sights and places you have been will never disappear, or become forgotten.

This philosophy, albeit somewhat clichéd, matters to us because we like to feel like we surround ourselves with the information we want, and not pick out one part, look at it, and then go on to the next part. Circular browsing is quite simple, but it changes a lot: A cycle is a list that has the start and end connected to each other. Having a cycle, we never need to stop and turn back. We just keep on cycling until we are back at the place we wanted to be. We never leave anything behind, and we can add new things to the cycle without ever removing anything from it. We just get a bigger cycle.

Keyboard Design Document

Introduction

This document will cover the design aspects in-depth for the new keyboard, which is planned for prototyping and implementation on the MeeGo-based WeTab tablet computer.

Issues with the current keyboard design

We found that the keys on the current keyboard design were too narrow for people who might have larger fingertips than normal. They would sometimes hit the wrong key when they were trying to press the one adjacent to it.

There were also some keys that we deemed unnecessary for a touch keyboard designer for the average user present. Keys like the semicolon (;), apostrophe (‘), backslash/slash (/, \) and the brackets ([]) could be removed from the main keyset and accessed via the special symbols keyset which already exists. It is becoming clear that this keyboard was designed by a programmer with coding in mind, and not design and usability. The Tab-key, for example, sees very little use to be included in this design. Its function can be emulated by touching the text field, for example. The spacebar is also very long and takes up quite a lot of space on the keyboard, and could be shortened.

One of the things we were concerned about was the obstruction of the screen when using the keyboard. On the original, one could tap the arrow button to anchor the keyboard to the top or the bottom of the screen. We could not think of why anyone would use the keyboard on the top enough for this to be included, and removing the arrow icon can free up horizontal space on the keyboard.

Fig.1: The existing keyboard design in Plasma Active, showing the lower case letters

What could be improved?

With issues from the current design in mind, what are we going to improve with our own keyboard design?

• Improved keyboard for Plasma Active design notes
  • Prevent keyboard from blocking too much content
  • More intuitive way of moving the keyboard around
    • Grab and drag to a custom position
  • Touch-friendly keys
    • Can be used by both children and adults without difficulties

Note that every image below this point is from a prototype in development and is not to scale. Appearance and layout may be changed in the final version.

How it's used

Whenever you touch an area on the screen where you can input or edit text, the keyboard will show up on the lower half of the screen. It can then be used like any touch keyboards; you press keys to manipulate the text edit area on the screen. Multiple keysets like symbols, numbers and accented letters are accessed by pressing the appropriate key on the keyboard.

The keysets

The main keyset you will see when the keyboard appears is the one with lower-case letters. This uses the QWERTY-layout, as most people are familiar with that type of layout. This is considered to be the default layout.

Fig.2.1: The keyboard in its default (lower case) keyset

Shift/Caps-lock

If you touch either of the shift-buttons (the buttons marked with an upward arrow) once, you will transform the lower-case letters into upper-case letters until you press a key. The upper-case letter will be entered into the text area and the keys will return to their lower-case state.

Fig.2.2: The upper case keyset

If you double-touch the shift keys, you will activate caps-lock. The keys will stay upper-case until you turn it off by touching either of the shift buttons once. When caps-lock is active, both of the shift buttons will turn green. They will stay green until caps-lock is switched off.

Fig.2.3: Left shift button when caps lock is active

Numbers and symbols

If you touch either of the buttons marked “?123+” once, the keyboard layout will change to display the numbers 0 to 9 and a variety of symbols. While this layout is active, touching the shift buttons will toggle the keyboard layout to display even more symbols. Touching the button marked “ABC” will change it back to the standard letter layout.

Fig.2.3: The numbers keyset with a few frequently used symbols

Fig.2.4: The symbols keyset shown when you press shift while the numbers keyset is active