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Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). Made ActiveIdIsAlive track the actual ID to avoid incorrect polling in BeginGroup/EndGroup when the ID changes within the group. (#2023, #820, #956, #1875).

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This commit is contained in:
omar
2018-08-16 13:33:16 -07:00
parent 8972ebae73
commit 341ebd961b
3 changed files with 10 additions and 8 deletions
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1
CHANGELOG.txt
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@@ -63,6 +63,7 @@ Other Changes:
- Misc: Added ImGuiMouseCursor_Hand cursor enum + corresponding software cursor. (#1913, 1914) [@aiekick, @ocornut]
- Misc: Tweaked software mouse cursor offset to match the offset of the corresponding Windows 10 cursors.
- Made assertion more clear when trying to call Begin() outside of the NewFrame()..EndFrame() scope. (#1987)
- Fixed assertion when transitioning from an active ID to another within a group, affecting ColorPicker (broken in 1.62). (#2023, #820, #956, #1875).
- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).
- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)

11
imgui.cpp
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@@ -2271,7 +2271,7 @@ void ImGui::SetActiveID(ImGuiID id, ImGuiWindow* window)
g.ActiveIdWindow = window;
if (id)
{
g.ActiveIdIsAlive = true;
g.ActiveIdIsAlive = id;
g.ActiveIdSource = (g.NavActivateId == id || g.NavInputId == id || g.NavJustTabbedId == id || g.NavJustMovedToId == id) ? ImGuiInputSource_Nav : ImGuiInputSource_Mouse;
}
}
@@ -2322,7 +2322,7 @@ void ImGui::KeepAliveID(ImGuiID id)
{
ImGuiContext& g = *GImGui;
if (g.ActiveId == id)
g.ActiveIdIsAlive = true;
g.ActiveIdIsAlive = id;
if (g.ActiveIdPreviousFrame == id)
g.ActiveIdPreviousFrameIsAlive = true;
}
@@ -3934,7 +3934,7 @@ void ImGui::NewFrame()
g.HoveredIdPreviousFrame = g.HoveredId;
g.HoveredId = 0;
g.HoveredIdAllowOverlap = false;
if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
if (g.ActiveIdIsAlive != g.ActiveId && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
ClearActiveID();
if (g.ActiveId)
g.ActiveIdTimer += g.IO.DeltaTime;
@@ -3942,7 +3942,8 @@ void ImGui::NewFrame()
g.ActiveIdPreviousFrame = g.ActiveId;
g.ActiveIdPreviousFrameWindow = g.ActiveIdWindow;
g.ActiveIdPreviousFrameValueChanged = g.ActiveIdValueChanged;
g.ActiveIdIsAlive = g.ActiveIdPreviousFrameIsAlive = false;
g.ActiveIdIsAlive = 0;
g.ActiveIdPreviousFrameIsAlive = false;
g.ActiveIdIsJustActivated = false;
if (g.ScalarAsInputTextId && g.ActiveId != g.ScalarAsInputTextId)
g.ScalarAsInputTextId = 0;
@@ -13155,7 +13156,7 @@ 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 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.ActiveIdIsAlive && g.ActiveId) // && g.ActiveIdWindow->RootWindow == window->RootWindow)
if ((group_data.BackupActiveIdIsAlive != g.ActiveId) && (g.ActiveIdIsAlive == g.ActiveId) && g.ActiveId) // && g.ActiveIdWindow->RootWindow == window->RootWindow)
window->DC.LastItemId = g.ActiveId;
else if (!group_data.BackupActiveIdPreviousFrameIsAlive && g.ActiveIdPreviousFrameIsAlive) // && g.ActiveIdPreviousFrameWindow->RootWindow == window->RootWindow)
window->DC.LastItemId = g.ActiveIdPreviousFrame;

6
imgui_internal.h
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@@ -408,7 +408,7 @@ struct ImGuiGroupData
float BackupCurrentLineHeight;
float BackupCurrentLineTextBaseOffset;
float BackupLogLinePosY;
bool BackupActiveIdIsAlive;
ImGuiID BackupActiveIdIsAlive;
bool BackupActiveIdPreviousFrameIsAlive;
bool AdvanceCursor;
};
@@ -637,8 +637,8 @@ struct ImGuiContext
float HoveredIdTimer;
ImGuiID ActiveId; // Active widget
ImGuiID ActiveIdPreviousFrame;
ImGuiID ActiveIdIsAlive; // Active widget has been seen this frame (we can't use a bool as the ActiveId may change within the frame)
float ActiveIdTimer;
bool ActiveIdIsAlive; // Active widget has been seen this frame
bool ActiveIdIsJustActivated; // Set at the time of activation for one frame
bool ActiveIdAllowOverlap; // Active widget allows another widget to steal active id (generally for overlapping widgets, but not always)
bool ActiveIdValueChanged;
@@ -784,8 +784,8 @@ struct ImGuiContext
HoveredIdTimer = 0.0f;
ActiveId = 0;
ActiveIdPreviousFrame = 0;
ActiveIdIsAlive = 0;
ActiveIdTimer = 0.0f;
ActiveIdIsAlive = false;
ActiveIdIsJustActivated = false;
ActiveIdAllowOverlap = false;
ActiveIdValueChanged = false;