Creating Slick User Interfaces With Qt
34
1 Creating Slick User Interfaces With Qt Espen Riskedal / Cutehacks SEE 2010
-
Upload
espen-riskedal -
Category
Technology
-
view
8.552 -
download
0
description
Describes four different ways of creating GUIs in Qt and what their pros and cons are. The different ways are: QWidget, QGraphicsView, Qt Quick and QtWebKit using HTML5. Thanks to Marius, Ariya, Alessandro and Henrik for helping out with it :) First given at SEE2010 in Amsterdam (http://www.see2010.org/)
Transcript of Creating Slick User Interfaces With Qt
1
Creating
Slick User InterfacesWith Qt
Espen Riskedal / CutehacksSEE 2010
2
Purpose of this talk
Explain which Qttechnologies to use now,and what to choosein the future.
3
Espen Riskedal
Masters from University of Bergen
6 years in Trolltech
2 years in NOKIA
Co-founded Cutehacks AS
4
Mobile appsSymbian
MeeGo
Android
5
Agenda
A quick Qt primerThe good and the bad
QWidget
QGraphicsView
Qt Quick
QtWebKit (HTML5)
Conclusion
6
A quick Qt primer«Which class was
that again?»
QWidget
QWebView
QDeclarativeView
QGraphicsView
QFrame
QAbstractScrollArea
QPaintDeviceQObject
8
QWidget QGraphicsView
Qt Quick QtWebKit
The Good and the Bad
«What do I gainand what do I lose?»
QWidget
11
QWidget
Low-level
Painting
Alien widgets
Scrolling
Mature
High-level
Touch interface
Resolution dep.
Style API
Transformations
Good Bad
Yr.noby cutehacks.com
Flightsby cutehacks.com
Programming tip #1Hire a designer :)
Programming tip #2qDrawBorderPixmap (...)
Programming tip #3QWidget::scroll(...)Qt::WA_OpaquePaintEvent
QGraphicsView
QGraphicsView
Resolution indep.
Transformations
Lightweight items
Layers
Anchor layouts
Components
Performance
Style API
Good Bad
Orange Wednesdaysby orange.co.uk
Images from http://blog.symbian.org/2010/07/30/building-orange-wednesdays-in-qt/
Programming tip #4QGraphicsItem::setCacheMode()QGraphicsItem::DeviceCoordinateCache
Qt Quick
21
Qt Quick
Property bindings
Rapid prototyping
Resolution indep.
No compile
Anchor layouts
Components
Memory
Style API
Good Bad
Work in progressby cutehacks.com
Flickr mobileby qt.nokia.com
Programming tip #5don't mix too many layers of transparencydon't build too deep hierarchiesdon't put javascript in the critical path
QtWebkit + HTML5
25
QtWebKit + HTML5
Standard
Cross-platform
Designer friendly
Corporations
Memory
CPU
Immature
Good Bad
Sencha Touchby sencha.com
Programming tip #6QGraphicsWebView
Conclusion
«It depends :-)»
29
Conclusion
Right now
Custom widgets on top
of QWidget
30
Conclusion
Near future (Q1 2011)
Qt Quick
31
Conclusion
A year from now (Q3 2011)
HTML5?
Qt Quick withQt components?
32
Multi platform
33
THANK YOU!
Questions?
