Subject: [E-devel] [Patch] Evas touch event patch.
Nice to meet you.
I'm Eunmi Lee, developing mobile web browser and working on WebKit EFL port.
I need new type of event for touch, so I've made patch to add
EVAS_CALLBACK_TOUCH event to the evas.
I will explain history of this patch.
Currently, many web applications and sites use TouchEvent and they can
do everything(scrolling, zooming and so on) like native application
using TouchEvent.
So, I'm also want to provide TouchEvent for web in the WebKit EFL port,
but I got a problem during making TouchEvent because EFL's touch
event's structure (Mouse, Multi Event) is different from Web
TouchEvent's one.
Let me explain about Web TouchEvent firstly.
Web TouchEvent is consist of type and touch points list simply.
There are 3 kinds of type.
TouchStart: Happens every time a finger is placed on the screen.
TouchEnd: Happens every time a finger is removed from the screen.
TouchMove: Happens as a finger already placed on the screen is moved
across the screen.
for example, we can make (1 finger starts to touch), (2 fingers are
moving), (1 finger is released duirng 3 fingers are moving) and so on.
You can see the detailed information in the following url:
http://www.sitepen.com/blog/2008/07/10/touching-and-gesturing-on-the-iphone
However, EFL's touch event is consist of six kinds of type :
MOUSE_DOWN, MOUSE_UP, MOUSE_MOVE, MULTI_DOWN, MULTI_UP, MULTI_MOVE.
So, I have to make a converter to make web touch event from EFL's
touch event.
You can reference attatched image file : evas_touch_event.png.
To tell the truth, converting code is not a big one.
But, I want to reduce this additional job and make code simple.
In the WebKit QT port, they don't have to make converting code for
TouchEvent,
because they have QTouchEvent, it has type and touchPoints list and
they can be mapped to Web TouchEvent one by one.
I think iPhone and Android also have such kind of event.
That's all why I want to add new touch event type to the evas.
about my patch:
- EVAS_CALLBACK_TOUCH event is added
- touch_points Eina_List is added to the Evas structure to maintain
current touch lists.
- process MOUSE/MULTI UP, DOWN, MOVE to make TOUCH event.
It is my first time to modify eves codes and actually I don't know too
much about evas.
So, I will be grateful if you send any feedback and comments.
SVN revision: 63796
We want to free the grab even if mouse up happened outside of the
object's region (that's the whole point of grabbing...). Also, we don't
want to update the grabbed list anywhere but in mouse down.
SVN revision: 60788
We only need to change the list of grabbed objects if we are initiating
a new grab, and not if are already in a grab because of multi touch.
SVN revision: 60787
ATTENTION: if you find any weird issues, please let me know. After testing
here, reading the code and discussing it with raster I decided to commit it,
but this is a very sensitive area. :P
SVN revision: 60651
Make this function recursive, so it can adjust the coords for all
parent objects. It starts with the grand-grand-grand-...-parent and goes
down until the same object.
SVN revision: 52407
We are iterating EINA_INLIST_REVERSE_FOREACH(list, obj) in a recursive
function. Don't mark the other objects as havemap_parent if the first
in the list has it.
SVN revision: 52403
This commit moves Evas.h contents a lot, but it should not change code
(some conts were added, some function attributes were changed).
The purpose of such is to define the order that doxygen show modules
in its documentation.
I also splitted documentation a bit more, and added a src/examples to
list useful example code. Right now it is just a pure-evas
draw-and-save using buffer engine.
NOTE: there is lots to document, and the @todo list is quite long but
I guess lots of things there were done already. Raster, could
you review this list?
SVN revision: 47308
Previously, due to propagation to parent, an event could have
been received more than once by an object. This triggered
strange behaviour in edje for example where you could receive
mouse,down,1 signal many time for one swallowed object.
This patch is a fix for that problem, I hope it doesn't break
anything (e17 and elementary_test run fine here, but report
any break related to events please).
SVN revision: 46869
ChunEon Park
Carsten Haitzler
EunMi Lee
Lucas De Marchi
Tom Hacohen
Vincent Torri
Mike Blumenkrantz
Gustavo Sverzut Barbieri
Cedric BAIL