adapting gnome applications to maemo fremantle
DESCRIPTION
Presentation given in Maemo Summit 2009 about Adapting GNOME Applications to Maemo Fremantle.TRANSCRIPT
static void_f_do_barnacle_install_properties(GObjectClass
*gobject_class){
GParamSpec *pspec;
/* Party code attribute */ pspec = g_param_spec_uint64 (F_DO_BARNACLE_CODE,
"Barnacle code.", "Barnacle code",
0, G_MAXUINT64,
G_MAXUINT64 /* default value */,
G_PARAM_READABLE | G_PARAM_WRITABLE |
G_PARAM_PRIVATE);
g_object_class_install_property (gobject_class,
F_DO_BARNACLE_PROP_CODE,
Joaquim Rocha (jrocha on IRC)[email protected]
Adapting GNOMEApplications toMaemo Fremantle
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
whoami
● GTK+ && Hildon && Python developer
● Igalian since 2008
● Part of Hildon Input Methods project
What porting means?
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
What porting means
● Before Fremantle:● Make an application RUN in Maemo
● After Fremantle:● ADAPT an application to Maemo
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
Why bothering?
● Your application gets better● Your users get happier● Your fingers too!
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
GNOME Applications
● Coding will be easier – it is GTK+!● Lots of interesting applications waiting to be ported!● If you're a GNOME user, you may have your common
applications available to you.
Root view / Sub view
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
Root view / sub view philosophy
● Applications are stacks of windows
● The root window is the base● E.g.: List of emails
● Actions that break the usage flow, will be sub views:● E.g.: Reading an email
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
Root View Sub View
This means: no GTKPaned!
Black Chapter
FAIL!FAIL!
What to do with this!?
Divide and Conquer
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
When a box is tapped,a dialog appears...
Use a GtkToggle button or a HildonPickerButton
Replaced the GtkSpinButtons by HildonEntries and not by HildonPickerButtons because the changes are shown immediately in the image.
Assign the numeric GtkInputMode
Text is the focus here, so, instead of a GtkNotebook, the style properties are in a GtkDialog launched from the text properties HildonAppMenu
GtkSpinButtons are replaced by HildonPickerButtons with a TouchSelectorEntry assigned
HildonAppMenu
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
HildonAppMenu
● Really different from a GtkMenu!!
● Do not stuff it: Keep a low number of items
● Use filters to display HOW contents are shown, not WHICH contents are shown
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
DRY: Don't Repeat Yourself
How to keep a low number of menu items?
Choose the most used/important menus and sub-menus from the menu bar.
Pages can be chosen using gestures, so, no need for Next/Previous menus.
The status bar and toolbar are not used in EOG for Maemo, so, no menus are needed.
The Zoom In / Zoom Out functionalities are accomplished by using the Increase / Decrease hard-keys.
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
Following the Hildon Interface Guidelines
● HIG says: don't show menu items that are insensitive● Here's a helpful tip:
● Connect a callback to the “show” signal of each HildonAppMenu item
● The callback shows/hides the item according to its “sensitive” property
EOG with no images loaded
EOG with an image loaded
Migrating Preferences Dialogs
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
Preferences Dialogs
● Dialogs with a GtkNotebook to group different kinds of preferences
● Tabs' labels define groups' names
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
How to migrate it to Fremantle?
● Use a HildonPannableArea
● Add a GtkVBox with ALL the preferences groups and use a GtkLabel above each one, identifying it
Adapting GNOME Applications to Maemo Fremantle · Joaquim Rocha <[email protected]>
Where to go from here?
● Maemo 5 Developer Guide:
http://wiki.maemo.org/Documentation/Maemo_5_Developer_Guide
● Maemo 5 API Reference:
http://maemo.org/api_refs/5.0/5.0-final/hildon/
Questions?
Thank you!