Hi Sam, 2009/2/11 Quiring, Sam <[email protected]>
> Greetings, > > Over in the Mozilla accessibility mailing list ( > [email protected]) I asked how to determine the topmost > object under the mouse, the object that would get the event if the user > clicked? Aaron Leventhal answered "MSAA and AT-SPI have a way to get the > accessible object at a point". With some help I eventually discovered the > at-spi routine AccessibleComponent_getAccessibleAtPoint(), which has worked > great until today. > > I have a GTK window on the screen and the mouse is hovering over a Text > box. Below is a dump of part of the at-spi accessibility tree representing > that area of the window. The mouse is at (x,y) = (1060, 538). This is > inside the text object shown at the last line of the dump. > > I call AccessibleComponent_getAccessibleAtPoint(...,1060, 538) on the "page > tab list" object and it returns NULL. Given the data in the dump, I can see > how this might have happened: there are exactly 2 children of "page tab > list" and neither contain (1060, 538): > I have noticed incorrect value with respect to Nautilus, when I try to get the values using AccessibleComponent_getExtents. Its the value provided by individual application, where the object is located and not the job of at-spi (I guess). Thanks Nagappan > > child 2/2 (n:,d:,r:page tab list) Box[756,508,506,170] [actions: ] [subs: > Component Selection ] (children: 2) > child 1/2 (n:,d:,r:page tab) Box[-2147483648,-2147483648,0,0] [actions: ] > [subs: Component Text ] (children: 1) > child 2/2 (n:,d:,r:page tab) Box[756,508,0,0] [actions: ] [subs: > Component Text ] (children: 1) > but if we look further, we can see that deeper descendents do contain > (1060, 538), including the text box at the bottom of the dump, which is what > I was looking for. > > Is this a bug in AccessibleComponent_getAccessibleAtPoint()? If not, is > there another routine I should be calling to get the accessible object at a > point? > > -Sam > > > *key: Box[x, y, width, height]* > child 2/2 (n:,d:,r:page tab list) Box[756,508,506,170] [actions: ] [subs: > Component Selection ] (children: 2) > child 2/2 - [states: enabled, sensitive, showing, visible] > child 1/2 (n:,d:,r:page tab) Box[-2147483648,-2147483648,0,0] [actions: ] > [subs: Component Text ] (children: 1) > child 2/2 (n:,d:,r:page tab) Box[756,508,0,0] [actions: ] [subs: > Component Text ] (children: 1) > child 1/1 (n:,d:,r:filler) Box[756,508,506,170] [actions: ] [subs: > Component ] (children: 2) > child 1/2 (n:,d:,r:scroll pane) Box[762,514,494,122] [actions: ] > [subs: Component ] (children: 2) > child 1/2 (n:,d:,r:viewport) Box[762,514,476,122] [actions: ] > [subs: Component ] (children: 1) > child 1/1 (n:,d:,r:panel) Box[764,516,472,385] [actions: ] [subs: > Component ] (children: 12) > child 1/12 (n:,d:,r:panel) Box[1162,528,68,56] [actions: ] > [subs: Component ] (children: 1) > ... > child 11/12 (n:,d:,r:panel) Box[912,528,250,25] [actions: ] > [subs: Component ] (children: 1) > child 1/1 (n:,d:,r:text) Box[912,528,250,25] [actions: > activate] [subs: Action Component EditableText Text ] (children: 0) > > _______________________________________________ > Gnome-accessibility-devel mailing list > [email protected] > http://mail.gnome.org/mailman/listinfo/gnome-accessibility-devel > > -- Linux Desktop (GUI Application) Testing Project - http://ldtp.freedesktop.org http://nagappanal.blogspot.com
_______________________________________________ Gnome-accessibility-devel mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gnome-accessibility-devel
