[Qt-interest] How install shortcuts for multiple widgets?

[Wilhelm]

Am 09.02.2011 10:10, schrieb Jaco Naude:
> Are you setting the action's context to be application wide?

What do you mean: I'm not aware of an action context, I only know
shortcut context ...

> 
> On Wed, Feb 9, 2011 at 8:31 AM, Wilhelm <wilhelm.meier at fh-kl.de
> <mailto:wilhelm.meier at fh-kl.de>> wrote:
> 
>     Hi Jaco,
> 
>     Am 09.02.2011 06:35, schrieb Jaco Naude:
>     > Hi Wilhelm
>     >
>     > One way to solve the problem is to have a front-end action with
>     multiple
>     > backend actions. The active backend action will then depend on the
>     > widget that has focus and you connect the triggered() signal of the
>     > frontend action to the triggered() signal on the backend action etc.
> 
>     Yes, that was my first idea: to have a say ProxyAction for all those
>     actions. But I thought there must be al solution in Qt allready.
> 
>     Then I came across the shortcutContext property of QAction and tried to
>     set the contexts of all the "overlapping" actions to Qt::WidgetShortcut
>     instead of the default Qt::WindowShortcut. But I noticed no change !?!
> 
>     The description of Qt::WidgetShortcut says:
>     The shortcut is active when its parent widget has focus.
> 
>     So if I install an action on a QWidget I would assume that the actions
>     shortcut is only active if the QWidget has focus, right? But this seems
>     to be broken somehow. Or do I misinterpret something?
> 
>     >
>     > Look at the screenshot below which shows what I mean:
>     > http://www.qtilities.org/images/screenshots/conan_screenshot2.jpg
>     >
>     > The "Expand All" action exists at multiple places (10 in this case)
>     > where I have tree views. The one that has focus must be the active
>     > backend action, in this case it is a widget called
>     > "Qtilities.Core.ObjectPool". Note that it shows it is active and
>     the the
>     > connection analyzer shows us that the triggered() signals are
>     connected
>     > correctly.
>     >
>     > To activate your action will depend on your implementation. In my
>     case I
>     > use contexts with IDs to define what the active context is. For
>     example
>     > if I want to activate the action in the QEvent::FocusIn of my widget I
>     > install an event filter on the view and do something like this:
>     >
>     > bool MyWidget::eventFilter(QObject *object, QEvent *event) {
>     >   if (object == d->tree_view && event->type() == QEvent::FocusIn) {
>     >       CONTEXT_MANAGER->setNewContext(contextString(),true);
>     >       return false;
>     >   }
>     > }
>     >
>     > See
>     http://www.qtilities.org/docs_master/page_action_management.html for
>     > more details.
>     >
>     > Hope this helps,
>     > Cheers
>     > Jaco
>     >
>     >
>     > On Tue, Feb 8, 2011 at 9:06 PM, Wilhelm <wilhelm.meier at fh-kl.de
>     <mailto:wilhelm.meier at fh-kl.de>
>     > <mailto:wilhelm.meier at fh-kl.de <mailto:wilhelm.meier at fh-kl.de>>>
>     wrote:
>     >
>     >     Hi all,
>     >
>     >     what is the "right" way to install shortcuts (say Ctrl-S) without
>     >     getting the "... ambiguous shortcut ..." error?
>     >
>     >     If I have an application menu with an action using shortcut
>     Ctrl-S and
>     >     e.g. several other widgets which also install this shortcut I
>     get the
>     >     above error.
>     >
>     >     So the question is, how to setup up an applications-wide
>     shortcut Ctrl-S
>     >     that saves a file A if triggered in a texteditor widget A if
>     that has
>     >     focus, or saves a file B if triggered in a texteditor widget B
>     if that
>     >     has focus?
>     >
>     >     I tried using the shortcut-context and setting it to
>     WidgetContext but
>     >     without luck.
>     >
>     >     Any hints?
>     >
>     >     --
>     >     Wilhelm
>     >
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>     >
>     >
> 
> 
>     --
>     Wilhelm
> 
> 


-- 
Wilhelm