Merge lp:~vanvugt/mir/fix-1437166 into lp:mir

[Daniel van Vugt]

mir_proving_server: Remember to return true if an event has been handled.
Otherwise it will be called twice, and for toggle() functions that means
they get instantly inverted, resulting in no change.

This fixes LP: #1437166, but the root cause remains open as LP: #1437174.

[PS Jenkins bot (ps-jenkins)]

PASSED: Continuous integration, rev:2433
http://jenkins.qa.ubuntu.com/job/mir-ci/3392/
Executed test runs:
    SUCCESS: http://jenkins.qa.ubuntu.com/job/mir-android-vivid-i386-build/1860
    SUCCESS: http://jenkins.qa.ubuntu.com/job/mir-clang-vivid-amd64-build/1859
    SUCCESS: http://jenkins.qa.ubuntu.com/job/mir-mediumtests-vivid-touch/1810
    SUCCESS: http://jenkins.qa.ubuntu.com/job/mir-vivid-amd64-ci/1389
        deb: http://jenkins.qa.ubuntu.com/job/mir-vivid-amd64-ci/1389/artifact/work/output/*zip*/output.zip
    SUCCESS: http://jenkins.qa.ubuntu.com/job/mir-mediumtests-builder-vivid-armhf/1810
        deb: http://jenkins.qa.ubuntu.com/job/mir-mediumtests-builder-vivid-armhf/1810/artifact/work/output/*zip*/output.zip
    SUCCESS: http://jenkins.qa.ubuntu.com/job/mir-mediumtests-runner-mako/4765
    SUCCESS: http://s-jenkins.ubuntu-ci:8080/job/touch-flash-device/19223

Click here to trigger a rebuild:
http://s-jenkins.ubuntu-ci:8080/job/mir-ci/3392/rebuild

review: Approve (continuous-integration)

[Alan Griffiths (alan-griffiths)]

Sure

review: Approve

=== modified file 'playground/demo-shell/window_manager.cpp'
--- playground/demo-shell/window_manager.cpp	2015-03-25 02:48:40 +0000
+++ playground/demo-shell/window_manager.cpp	2015-03-27 07:05:41 +0000
@@ -366,11 +366,13 @@
                  event.key.scan_code == KEY_N)
         {
             toggle(inverse);
+            return true;
         }
         else if (event.key.modifiers & mir_key_modifier_meta &&
                  event.key.scan_code == KEY_C)
         {
             toggle(contrast);
+            return true;
         }
     }
     else if (event.type == mir_event_type_motion &&