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Adding the new kFeatureDisableKeyFiltering OSystem feature.

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This feature is used by agi's prediction dialog and is a hint to the backend
to temporarily switch off any keyboard mapping, used in devices with limited
keyboard input. Also, supply some comments to the newly added event & feature.

svn-id: r27069
This commit is contained in:
Kostas Nakos 2007-06-03 18:44:03 +00:00
parent cd6f145577
commit 5df28554ac
3 changed files with 25 additions and 2 deletions
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6
common/events.h
View File

@ -57,6 +57,12 @@ enum EventType {
EVENT_QUIT = 10,
EVENT_SCREEN_CHANGED = 11,
/** The backend requests the agi engine's predictive dialog to be shown.
* TODO: Fingolfin suggests that it would be of better value to expand
* on this notion by generalizing its use. For example the backend could
* use events to ask for the save game dialog or to pause the engine.
* An associated enumerated type can accomplish this.
**/
EVENT_PREDICTIVE_DIALOG = 12
};

19
common/system.h
View File

@ -125,7 +125,7 @@ public:
kFeatureAutoComputeDirtyRects,
/**
* This flags determines either cursor can have its own palette or not
* This flag determines either cursor can have its own palette or not
* It is currently used only by some Macintosh versions of Humongous
* Entertainment games. If backend doesn't implement this feature then
* engine switches to b/w version of cursors.
@ -142,7 +142,22 @@ public:
/**
* Set to true to iconify the window.
*/
kFeatureIconifyWindow
kFeatureIconifyWindow,
/**
* This feature, set to true, is a hint toward the backend to disable all
* key filtering/mapping, in cases where it would be beneficial to do so.
* As an example case, this is used in the agi engine's predictive dialog.
* When the dialog is displayed this feature is set so that backends with
* phone-like keypad temporarily unmap all user actions which leads to
* comfortable word entry. Conversely, when the dialog exits the feature
* is set to false.
* TODO: Fingolfin suggests that the way the feature is used can be
* generalized in this sense: Have a keyboard mapping feature, which the
* engine queries for to assign keys to actions ("Here's my default key
* map for these actions, what do you want them set to?").
*/
kFeatureDisableKeyFiltering
};
/**

2
engines/agi/predictive.cpp
View File

@ -120,6 +120,7 @@ bool AgiEngine::predictiveDialog(void) {
AgiBlock tmpwindow;
_predictiveDialogRunning = true;
_system->setFeatureState(OSystem::kFeatureDisableKeyFiltering, true);
// FIXME: Move this to a more appropriate place.
initAsciiToNumTable();
@ -405,6 +406,7 @@ processkey:
_gfx->doUpdate();
}
_system->setFeatureState(OSystem::kFeatureDisableKeyFiltering, false);
_predictiveDialogRunning = false;
return rc;