information visualization course

© Anselm Spoerri

Web Design

Information Visualization Course

Prof. Anselm [email protected]

© Anselm Spoerri

Lecture 7 – Overview

Meaning– Recap: Web Design Matrix– Presentation Pyramid

Mechanics– AP Element Recap– AP Element and Elastic Layout– Interaction Design: Rollovers– Dreamweaver Step-by-Step Demos

– Interactivity: Rollovers | Image Maps | AP Elements

– Fireworks

– Recap

– New Features: Import Image, Text as Mask

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Recap – Web Guiding Principles

Common Sense– No right way to design, but there are better ways :)

Make it short– More likely to be used and remembered– Cut in ½ and cut in ½ again

Don't make me think– Get rid of question marks - each item has clear purpose

Make it work at a glance– People have little time

Support intented task - manage expectations

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User Behavior Design Implications Design Specifics

1 Use Grid System

2 Create Visual Hierarchy and Guide Eye

3 Typography Heuristics

• Design for Scanning

• Make page work at a glance • Create Visual Hierarchy

• Make obvious what you can do

• Don't make users think

• Repetition & Consistency

User Behavior Design ImplicationsUser Behavior Design Implications Design Specifics

Scan pages - don't read them

Choose first “reasonable item”

Muddle through

Stick to what works

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Presentation Pyramid: Summary Paragraph Page

More detailed information

Two to Three Paragraphs

Summary

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Recap – CSS: AP Element = AP Div

AP Element = Absolutely Positioned Element = AP Div

Specify exact coordinates with respect to:• Body / AP parent element (position: absolute)• Browser window (position: fixed) [not all browsers support it]

then set top, right, bottom and/or left: value;

takes element out of “natural/normal flow”

• More Layout Control & Flexibility• Layout flexibility like in print design• Change visibility of AP Elements

• Nesting AP Elements• Inherit properties from parent AP Element such as visibility

AP elements can overlap specify a stacking order (z-index) to position elements in 3D.

Vertical-align: baseline/ middle / sub / super / top / bottom / text-top / text-bottom

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AP Elements and Elastic Layout

Incorporate AP Elements into Elastic Layout– AP Elements takes “div” out of the “linear flow” of page

position: relative

– Add position: relative to ancestor element to which you want your absolutely positioned element to be offset; otherwise element will be offset with respect to body or AP parent.

– relative element will not show up in AP Panel in DW

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AP Elements and Elastic Layout (cont.)

#container { /* width: 80%; margin: 0 auto; */}

#mainContent {/* properties */ }

#apDiv1 { position: absolute; left: 25px; top: 25px; }

<div id=“container”>

<div id=“mainContent”>

<div id=“apDiv1”>Hello</div>

</div>

</div>

apDiv1 will NOT move with #container when browser width is changed

How to change this?

Add position: relative to #container declaration

#container {position: relative; /* elastic properties */; }

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Interaction Design

Interactivity Choices– Rollovers

– “Jointed” = interact with page element and it changes its appearance

example

– “Disjointed” = interact with page element and OTHER elements change

example

– Image Maps– Interact with Hotspots = Circle, Rectangle, Polygon

example

– AP Elements– Control Visibility

example

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Disjointed Rollover

1. Select Graphic2. Select “+” in Behavior Window3. Select “Swap Image”4. Select Image(s) to swap and browse to

replacement image (* indicator now next to image)5. Select “Preload Images”

Importance of NAMING your graphic elements

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“Behavior Management”

Changing Which Event Triggers Action– Select Event in “Behaviors” Window

– Press on black triangleand pull down menu appears

– Select which event triggers behavior(mouse click or mouse over etc.)

Multiple Behaviors–Can attach multiple actions to same object

–Action for “MouseOver” (Default)–Action for “MouseClick”–Etc.

–Press “+” icon and select

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Only “onMouseOver” event visible?

Or

Most of Behaviors grayed out?

“Behavior Management” – Show Events for …

Select thisto have more

EVENT and BEHAVIOR options

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Image Map

Create Hotspot(s)– Select Image

– Select hotspot tool in “Properties Inspector”

– Make sure all Property Inspector options visible

(if not, click bottom right triangle)

– Rectangle / Circle: draw shape over hotspot region

– Polygon: trace contour of hotspot region by clicking mouse

– Select Hopsot using “hotspot selection arrow”

– Attach Behavior

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Dreamweaver – Example – Step by Step

Layout & Interactions– Create layout for navigation and multiple images

– Work with Animated GIFs

– Create Disjointed Rollovers

– Use of "blank images" that can be swapped

– Assign "image swaps"

– Orchestration of multiple Animated GIFs

– Create Image Map: move over, single click, double click

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Step 0 – Download files and Initialize

Download Files and Images

Launch Dreamweaver

Initialize– File > New– View > select “Design”– View > Rulers > select “Show” and “Pixels”– Windows > select “Properties” and “Behaviors”

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Step 1a – Create AP Elements

Create AP Element

– Standard Mode + Layout View– Insert > Layout Object > AP Div

or

Click “Draw AP Div” button in “Insert” panel, then drag to draw

ID = “Main”; Width = 700; Height = 500; L = 0; T = 0;

Nested AP Elements in “Main” AP Element

1. ID = “Left”; Width = 100; Height = 50; L = 300; T = 50;

2. ID = “Right”; Width = 100; Height = 50; L = 500; T = 50;

3. ID = “Center”; Width = 300; Height = 300; L = 300; T = 150;

4. ID = “ImageMap”; Width = 200; Height = 200; L = 50; T = 200;

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Step 1b – Create Tables Inside AP Element

Open file “layout1a” to continue

Create Table inside of AP Element– Place Cursor inside “Center” AP Element– Insert > Table 3 Columns x 3 Rows– Select all Nine Cells– Property Inspector : Width = Height = 100

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Step 1c – Insert Images and Assign Names

Open file “layout1b” to continue

Insert Images– Place Cursor inside “Left” AP Element– Insert > Image

– “Select Image Source” dialog opens– Select “images” folder– Select “bilbao_L”

Name Image– Select image (you want to name)– “Properties Inspector” changes to “Image” and its thumbnail shows– Enter name “bilbao” next to thumbnail

Why name image?– Want to be able to refer to image (and select in a list)

e.g. so that we swap it with another image in rollover

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Step 1d – Insert Images and Assign Names

Insert & Name Images– Place Cursor inside AP Element / Table Cell

(if cell is selected you can not insert)

– Insert > Image– “Right” AP Element = “dancebutton” and name it “dance”

– 9 Cells of 3x3 Table:– Cell1and1 = “whiteCell” and name “cell1and1”– Cell1and2 = “whiteCell” and name “cell1and2”…– Cell3and2 = “whiteCell” and name “cell3and2”– Cell3and3 = “whiteCell” and name “cell3and3”

Why white placeholder images?– Will be used for “disjointed rollover”

e.g. when we move mouse across “dance” imagethe placeholders will be exchanged with dance images

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Step 2a – Create Simple Rollover Using Behaviors

Open file “layout2” to continue (press F12 to view in Browser)

Attach Behavior to Image– Select image = “dance” (BTW: similar for text)

– In “Properties” window, enter dummy hyperlink = #into hyperlink field

– In “Behaviors” window, select “+” icon– Select “Swap Image” in pull down menu – Specify which of listed images should swapped

with which another image (using “Browse” and “Select”)

1. Select “dance”2. Browse to & select “dance_text”(a star symbol will be placed toimage being swapped)

Always select “Preload Images”

If want initial images restoredon MouseOut, select check boxFor now do not select it.

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Step 2b – Create Simple Rollover Using Behaviors

Done so far (Open file “layout2a” to continue)

Attached Simple Rollover to “dance” so mouse-over changes it to “dance_text” Use F12 to test it

Next Attached Simple Rollover to “bilbao” so mouse-over changes it to “bilbao_text”

Attach Behavior to Image = “bilbao”– Select image = “bilbao” – In “Behaviors” window, select “+” icon

– Select “Swap Image” in pull down menu – Select “bilbao” and Browse to & select “bilbao_text”– “Restore Images on MouseOut” not selected

What is missing?– When moving mouse over “dance” we want “bilbao” to change as well We want to create a Disjointed Rollover, where not only image we move

mouse over is changed

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Step 2c – Create Disjointed Rollover Using Behaviors

Done so far (Open file “layout2b” to continue)

Attached Simple Rollovers to “dance” and “bilbao”

Next Attach Disjointed Rollover to “dance” so “bilbao” changes to “bilbao_L”

Attach Disjointed Rollover to “bilbao” so “dance” changes to “dancebutton”

Attach Behavior to ImageSelect image = “dance” – In “Behaviors” window, double click on “Swap Image” behavior– In “Behavior - Swap Image dialog” for “dance” image

– Select “bilbao” and Browse to & select “bilbao_L”– “Restore Images on MouseOut” not selected

Select image = “bilbao” – In “Behaviors” window, double click on “Swap Image” behavior– In “Behavior - Swap Image dialog” for “bilbao” image

– Select “dance” and Browse to & select “dancebutton” – “Restore Images on MouseOut” not selected

Use F12 to test it

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Step 2d – Add Disjointed Rollovers Using Behaviors

Add further Disjointed Rollovers to “dance” image (Open file “layout2c” to continue)

Select “dance” image

In “Behaviors” window, double click on “Swap Image” behavior

Still in “Behavior - Swap Image dialog” for “dance” image

– Select “cell1and1” and browse & select “dance1_1”


…


– Make sure “Preload Images” selected

“Restore Images on MouseOut” not selected

Press F12 to test page in Browser

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Step 2e – Add Disjointed Rollovers Using Behaviors

Add further Disjointed Rollovers to “bilbao” image (Open file “layout2d” to continue)

Select “bilbao” image

In “Behaviors” window, double click on “Swap Image” behavior

“Behavior - Swap Image dialog” for “bilbao” image

– Select “cell1and1” and browse & select “bilbao1_1”


…


– Make sure “Preload Images” selected

“Restore Images on MouseOut” not selected

The “bilbaox_x” images are Animated GIFs

– Open in Fireworks if you want to examine them

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Coordinating Animated GIFs

Corners Middle Center

State 1

State 2

State 3

State 4

Example

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Step 3 – Creating Image Map

Open file “layout3” to continue

Insert Images– “lmageMap” AP Element = “imagemap” and name it “imagemap”

Open file “layout3plus”

Create Hotspot– Select “imagemap” image– Select “Polygon” hotspot tool in “Properties” window– Trace contour of dancer by clicking mouse along contour– Select Hopsot that was created– Attach “Swap Image” behavior

and make same swaps as with “dance” imagebut “Restore Images on MouseOut” selected

– Swapped on mouse click = “onClick”

Final file “layout4”

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AP Elements – Interactivity Demo

Download Files and Images

DemoUse Tracing Image to Guide Placement of AP ElementsUse AP Elements to create “disjointed” rollover without need to use GIF

or JPEG images example

Launch DreamweaverPanels open: Properties, Insert, AP ElementsShow Rulers and Grid

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Step 1 – Tracing Image

Tracing Image Example

– File > New: HTML and <blank> Layout and Transitional

– Modify > Page Properties : select sans serif typeface

– Modify > Page Properties : select “Tracing Image” category

– Browse for tracing image = “i-R_Opening_Page”

and set transparency = 50%

– Standard Mode:

– Create main AP Element that will hold other elements

L = 0px; T = 0px; W = 600px; H = 600px view in Split View

– Create four AP Elements (along earth contour) nested in main AP Element

– Enter text : experiment with size / bolding to create “visual flow”

– Experiment with visibility setting of main and/or “children” AP Elements

Step-by-Step files: tracingimage1, tracingimage2, tracingimage3

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Step 2a – Create AP Elements with Images

Create AP Elements with Images– Click “Draw AP Div” button in “Insert” panel, then drag to draw

– AP Element0: W = 800; H = 800; ID = Main;

– AP Element1: W = 160; H = 120; ID = Paris; Overflow = hidden;

– AP Element2: W = 160; H = 120; ID = Furcup; Overflow = hidden;

– Select AP Elements (using SHIFT select) and apply “Modify > Align = Left”

– “Paris” AP Element: Insert image “paris” …

Preview in Browser (press F12 for IE): notice overflow hidden

Select image and resize to 160 x 120 and ID = paris

Press F12: whole image now visible

– “Furcup” AP Element: Insert image “furcup” and resize to 160 x 120 and ID = furcup

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Step 2b – Create Text AP Elements and Manage Visibility

Open file “layers1”

Create AP Elements with Text– Click “Draw AP Div” (AP Element) button in “Layout” toolbar, then drag to draw

– AP Element3: W = 250, H = 150, ID = IntroText, Visibility = Hidden

– AP Element4: select and copy “IntroText” AP Element,

deselect and paste; rename it “ParisText” in AP Elements Panel

(notice: new AP element is in exact same position as “IntroText” as we want it;but it is not nested inside “Main” AP Element)

hold Control key as you drag “ParisText” below “Main”

– AP Element5: copy & paste “IntroText” and rename “FurcupText”

Perform same steps as for “ParisText”

Enter text into AP Elements– Select AP Element in “AP Element” Panel and enter text

AP Elements / AP Element Visibility Management– “AP Elements” Window: click in “eye” column to make “IntoText” = visible

and drag “IntroText” to top of stack

– Make “ParisText” and “FurcupText” = invisible

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Step 2c – Use AP Elements to create “disjointed” rollover

Open file “layers2”

Attach “Show-Hide Elements” Behavior– Select “paris” image (can also select AP div that contains image)

– “Behavior” Window: click “+” and select “Show-Hide Elements”

– “Show Hide Elements” Dialog: select “IntroText” and “hide”– “ParisText” = show and “”FurcupText” = hide

– “Behavior” Window: select event associated with “paris” imageand click on pull-down menu to select “(onMouseOver)”

– Attach behavior for “(onMouseOut)” to image “paris”(can also select AP div that contains image)

where now “IntroText” = show and “ParisText” & “FurcupText” = hide

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Resources: Behaviors - General

How to Attach Behavior to Text– Can not attach a behavior to plain text. – Easiest way is to add a null link (#) to the text,

then attach a behavior to the null link.

Behaviors Window– Window > Behaviors– Press (+) to attach action.

Press (-) to remove selected action.– Actions for a given event are executed in specified order.

Use (up) and (down) arrow buttons move the selected action. – Order of execution of actions can be changed only for a

particular event, e.g. onLoad or onClick event.– Different events appear depending on the object selected.

Make sure the correct page element or tag is selected. – To select a specific tag, use the tag selector at the bottom left of

the Document window.– “Show Events For” specifies the browsers in which the current

behavior should work.

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Resources: Events – Useful Subset

onClick – User clicks element and releases mouse

onDblClick – User double-clicks the specified element

onLoad – Generated when an image or page is loaded

onMouseDown – User presses the mouse button

onMouseOver – Mouse first moves over specified element

onMouseUp – Generated when a pressed mouse button is released

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Recap – Fireworks: Simple Image Manipulation

Goal– Create or manipulate image to create Visual Focus & Hierarchy– Create imagery for Navigation Bar, Rollovers or Image Map– Create frames for Animated GIF

Create Smaller Image– Modify > Canvas > Image Size– Specify Width / Height

– Make sure width & height linked (check “Constrain Proportions” box)

– File > Image Preview > Export (do not overwrite original)

Create Image of Specific Size– Select “Crop” tool– Specify Crop Area by holding mouse down and moving cursor

– Change size of crop area by interacting with its corner handles– Move crop area by selecting inside crop area

– Double–click or enter Enter– File > Image Preview > Export

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Recap – Fireworks: Selection

Goal– Want to combine part of image with other images to create collage

How?– Create Selection

– Select object you want select (parts of) or trace– Select “Selection” or “Lasso” tool – Perform Selection or Lasso Action– Edit > Copy– Edit > Paste (new object is created)

– Control Layer Visibility and Stacking Order in “Layers” Panel– (De)select EYE icon and select & drag layer to desired stack position

– Control Object Properties– Select Object and use Properties Inspector

Selection / Lasso Tool– Rectangular or Rounded, Circle, Ellipse

– Click Tool icon, hold mouse and choose shape of selection– Square or Circle - hold down shift key while drag mouse

– Lasso, Polygon Lasso– Lasso: Hold down mouse and draw shape - release of mouse closes shape– Polygon: Mouse click creates corner - double click closes polygon

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Recap – Fireworks: Create Text and Images for Animation

Goal: Create Text– Text for buttons in Navigation Bar– Text for links or captions in Image Map– Add text to frame of Animated GIF

How?– Select “Text” tool – Move Cursor & Click Mouse where you want text to start

– Text Property Inspector: type face & size, anti-aliasing, color, effects– Type (text layer is created – make sure layer towards top of stack)

– Select “Pointer” Tool to move text – Select “Text” Tool and select (part of) text to change its properties

Create Images for Animated GIF1. Select “Crop” tool 2. Specify Width & Height3. Create Cropped Image Area and double–click4. File > Image Preview > Export as GIF5. Apply “Edit > Undo” to go back to state before “crop” action

and return to step 3.

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Fireworks - Import Image

File > Import … (navigate to image you want)

Align Insertion Pointer and Clickwith upper left corner of canvas or location of your choice.

– If you hold & drag mouse, then you can specify size of inserted image.

Specify Transparency– Select object

– Specify transparency in Property Inspector

See “Lec6InsertImage.png” file

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Fireworks - Using Text as a Mask

Create or Select Text Object

Position Text Object so that so that it overlaps object or group of objects to be masked

Edit > Cut Text Object

Select Object(s) to Mask– If masking multiple objects, they must be grouped

Edit > Paste as Mask or Modify > Mask > Paste as Mask

See “Lec6TextMask.png” file

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