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Tweak EndGroup() to facilitate fixing #2550 later (currently should have no side-effect0. Demo: Add extra widget to status query test.

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omar
2019-05-12 21:35:05 +02:00
parent aca6ee1a91
commit 7355c84701
2 changed files with 19 additions and 11 deletions
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9
imgui.cpp
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@ -6825,10 +6825,13 @@ void ImGui::EndGroup()
// If the current ActiveId was declared within the boundary of our group, we copy it to LastItemId so IsItemActive(), IsItemDeactivated() etc. will be functional on the entire group.
// It would be be neater if we replaced window.DC.LastItemId by e.g. 'bool LastItemIsActive', but would put a little more burden on individual widgets.
// (and if you grep for LastItemId you'll notice it is only used in that context.
if ((group_data.BackupActiveIdIsAlive != g.ActiveId) && (g.ActiveIdIsAlive == g.ActiveId) && g.ActiveId) // && g.ActiveIdWindow->RootWindow == window->RootWindow)
// Also if you grep for LastItemId you'll notice it is only used in that context.
// (The tests not symmetrical because ActiveIdIsAlive is an ID itself, in order to be able to handle ActiveId being overwritten during the frame.)
const bool group_contains_curr_active_id = (group_data.BackupActiveIdIsAlive != g.ActiveId) && (g.ActiveIdIsAlive == g.ActiveId) && g.ActiveId;
const bool group_contains_prev_active_id = !group_data.BackupActiveIdPreviousFrameIsAlive && g.ActiveIdPreviousFrameIsAlive;
if (group_contains_curr_active_id)
window->DC.LastItemId = g.ActiveId;
else if (!group_data.BackupActiveIdPreviousFrameIsAlive && g.ActiveIdPreviousFrameIsAlive) // && g.ActiveIdPreviousFrameWindow->RootWindow == window->RootWindow)
else if (group_contains_prev_active_id)
window->DC.LastItemId = g.ActiveIdPreviousFrame;
window->DC.LastItemRect = group_bb;