windows presentation foudation - wpf day 2

8/10/2019 Windows Presentation Foudation - WPF Day 2

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By

Apex TG India Pvt Ltd

WPF, Windows Presentation FoundationA platform for building rich user experiences on Windows
http://www.apextgi.in/http://www.apextgi.in/


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Presentation Scope

What's covered:

XMALBasic Ee!ents o" WP#Architect$reProperty Syste! % &ependency Property

o$ted EventsBindin( Syste!Styin( % Te!patin(

What)s *ot covered:+ontros Li,rary

Graphics % M$ti Media&oc$!ents


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4/21

Tech Anaysis

WinForms

PDF WinForms +

GDI

WindowsMediaPlayer

Direct3D WPF

Forms,Controls

X X X

Complex text X X

Images X X

ideo ! "#dio X X

$D Grap%ics X X

3D Grap%ics X X

e"erence: http:%%windowsclient.net/wpf/white-papers/when-to-adopt-wpf.aspx


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The Appication +ass

Additiona appication.scoped services5 inc$din( +reatin( and !ana(in( co!!on appication in"rastr$ct$re0

Trac4in( and interactin( /ith appication i"eti!e0 Start$p Activated &eactivated Sh$tdo/nMode 28nLastWindo/+ose58nMainWindo/+ose5 8nExpicitSh$tdo/n3

SessionEndin( 2Lo((in( o""5Sh$ttin( do/n5estartin(5i,ernatin(3 Exit

etrievin( and processin( co!!and.ine para!eters0 Example Sharin( appication.scope properties and reso$rces0

Exa!pes in +ode &etectin( and respondin( to $nhanded exceptions0 Exa!pe in +ode


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The Appication +ass

et$rnin( exit codes0

Exa!pe in +ode Mana(in( /indo/s in standaone appications Trac4in( and !ana(in( navi(ation

using System.Windows.Navigation!. "#yperlin$ %ontrol

?=ri8"Pa(eTo*avi(ateTo0xa!?@

*avi(ate to Another Pa(e


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The Appication +ass

(.)rogrammatic Navigation with a )ac$ *+,

%% +reate a pac4 =I =ri $ri > new=ri2?AnotherPa(e0xa!?5 =riCind0eative3

%% Get the navi(ation service that /as $sed to

%% navi(ate to this pa(e5 and navi(ate to

%% AnotherPa(e0xa!

this0*avi(ationService0*avi(ate2$ri3

%onfiguring the #ost Windows itle Width and

#eight

0ragment Navigation

Navigation to a content fragment

PageURI1ElementName


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Navigation 2ifetime

Navigating0 8cc$rs /hen a ne/ navi(ation is reD$ested0 +an ,e$sed to cance the navi(ation0

Navigation)rogress0 8cc$rs periodicay d$rin( a do/noad toprovide navi(ation pro(ress in"or!ation0

Navigated0 8cc$rs /hen the pa(e has ,een ocated anddo/noaded0

NavigationStopped0 8cc$rs /hen the navi(ation is stopped 2,ycain( StopLoadin(35 or /hen a ne/ navi(ation is reD$ested /hie a

c$rrent navi(ation is in pro(ress0 Navigation0ailed0 8cc$rs /hen an error is raised /hie navi(atin(

to the reD$ested content0 2oad%ompleted0 8cc$rs /hen content that /as navi(ated to is

oaded and parsed5 and has ,e($n renderin(0 0ragmentNavigation8cc$rs /hen navi(ation to a content

"ra(!ent ,e(ins5 /hich happens: I!!ediatey5 i" the desired "ra(!ent is in the c$rrent content0 A"ter the so$rce content has ,een oaded5 i" the desired "ra(!ent is in

di""erent content0


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Navigation 2ifetime


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Navigation 2ifetime

3ournal /journal entry(3ournalEntry class)

The ,ac4 stac45 the "or/ard stac4

90 &ecarative !echanis!s provided ,y WP#


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Navigation 2ifetime

Structured Navigation 4verviewStructured Navigation with )age0unction

8ther Types o" Str$ct$red *avi(ation NavigationWindow %lass

,ro/ser.stye navi(ation into yo$r standaone appications

*avi(ation osts

%onfiguring the Application 5efinition for 6S7uildIn MSB$id proect


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WP# Architect$re


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WP# Architect$re

6ore declarative 9property centric9 model of programming

System.hreading.5ispatcher4b:ect Support for concurrency and threading. !essa(in( syste! i!pe!ented ,y the dispatcher0 +reate a +L o,ect that has STA ,ehavior0

hread affinity;

A co!ponent $ses the identity o" the exec$tin( thread to store so!e type o"state0 8LE 60K5 the cip,oard5 and Internet Exporer a reD$ire sin(e thread a""inity

2STA3 exec$tion0

he dispatcher; Basic !essa(e dispatchin( syste!5 /ith !$tipe prioritied D$e$es

Exa!pes o" !essa(es inc$de: a/ inp$t noti"ications 2!o$se !oved3 #ra!e/or4 "$nctions 2ayo$t3 =ser co!!ands 2exec$te this !ethod30


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WP# Architect$re

System.Windows.5ependency4b:ect

5ependency )roperties; To co!p$te the va$e o" a property ,ased on the va$e

o" other inp$ts Syste! properties s$ch as the!es and $ser pre"erence F$st.in.ti!e property deter!ination !echanis!s s$ch as data

,indin( and ani!ations%story,oards M$tipe.$se te!pates s$ch as reso$rces and styes 1a$es 4no/n thro$(h parent.chid reationships /ith other

ee!ents in the ee!ent tree

Also 0or; Se".contained vaidation

&e"a$t va$es +a,ac4s that !onitor chan(es to other propertiesA syste! that can coerce property va$es ,ased on potentiay

r$nti!e in"or!ation0


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WP# Architect$re

System.Windows.6edia.'isual

B$idin( a tree o" vis$a o,ects &ra/in( instr$ctions and !etadata a,o$t ho/ to render

those instr$ctions

2cippin(5 trans"or!ation5 etc030

Point o" connection ,et/een these t/o s$,syste!s5 the!ana(ed API and the $n!ana(ed !icore0


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WP# Architect$re

+o!position:

In =ser76 and G&I: 2I!!ediate !ode cippin( syste!3

a cippin( ,o$nds o$tside o" /hich the co!ponent isn)t ao/edto to$ch the pixes5 and then the co!ponent is as4ed to paintpixes in that ,ox0

Good "or !e!ory constrained environ!ent0

In WP#: ?Painter's a(orith!? paintin( !ode0

To render "ro! the ,ac4 to the "ront o" the dispay0

Each co!ponent to paint over the previo$s co!ponent's dispay0

+o!pex5 partiay transparent shapes0 Better "or ne/ type o" (raphics o,ect0


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WP# Architect$re

System.Windows.*,Element

%ore subsystems including 2ayout ,nput and Events.

2ayout;

!. A fixed set of layout models e. +ule; Si>e to content.

Arrange phase; o allows a parent to position and determine the final si>e of each child.

,nput;

4n a $ernel mode device driver. ?ets routed to the correct process and thread by involving the Windows $ernel and *ser(&. +outed to W)0. W)0 raw input message and sent to the dispatcher. +aw input events to be converted to multiple actual events.


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WP# Architect$re

+outing through the element tree. Events are said to 9bubble9 if they traverse from a target up

the tree to the root. Events are said to 9tunnel9 if that start at the root and

traverse down to a target.

,n the dispatcher for your application you would call

ranslateAccelerator which would sniff the inputmessages in *ser(& and determine if any matched aregistered accelerator.

%ommand7indings.

o define functionality in terms of a command end point @something that implements ,%ommand.

Enable an element to define a mapping between an inputgesture


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WP# Architect$re

System.Windows.0ramewor$Element A set of policies and customi>ations on the subsystems introduced in lower

layers of W)0. A set of new subsystems

)olicies; Application layout 5irect access to animation through the 7eginStoryboard method he data binding subsystem; one or more properties from a given element

to be bound to a piece of data Styling Subsystem; 7ind a set of properties from a shared definition to one

or more instances of an element.

System.Windows.%ontrols.%ontrol emplating allows a control to describe itCs rendering in a parameteri>ed

declarative manner.

he implementation of a control provides a data model and interactionmodel

his split between the data model


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W)0 property system

A set o" services that can ,e $sed to extend the "$nctionaity o" a co!!onan($a(e r$nti!e 2+L3 property0

5ependency property; A property that is ,ac4ed ,y the WP# property syste!0 What 0orD 90 A /ay to co!p$te the va$e o" a property ,ased on the va$e o" other

inp$ts Syste! properties s$ch as the!es and $ser pre"erence

F$st.in.ti!e property deter!ination !echanis!s s$ch as data ,indin( andani!ations%story,oards M$tipe.$se te!pates s$ch as reso$rces and styes 1a$es 4no/n thro$(h parent.chid reationships /ith other ee!ents in the

ee!ent tree0

60 To provide se".contained vaidation5 de"a$t va$es5 ca,ac4s that!onitor chan(es to other properties

70 A syste! that can coerce property va$es ,ased on potentiay r$nti!e

in"or!ation0 0 &erived casses can aso chan(e so!e speci"ic characteristics o" an

existin( property ,y overridin( dependency property !etadata5 rather thanoverridin( the act$a i!pe!entation o" existin( properties or creatin( ne/properties0


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windows presentation foudation - wpf day 2

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