From f8b7d5c76d114dc86366200199d6b48bbfe98316 Mon Sep 17 00:00:00 2001
From: ocornut <omarcornut@gmail.com>
Date: Wed, 27 May 2015 22:53:43 +0100
Subject: [PATCH] Tracking ActiveIdWindow along with ActiveId

---
 imgui.cpp | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/imgui.cpp b/imgui.cpp
index ea70d592..fe182ea2 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1250,8 +1250,9 @@ struct ImGuiState
     ImGuiID                 ActiveId;                           // Active widget
     ImGuiID                 ActiveIdPreviousFrame;
     bool                    ActiveIdIsAlive;
-    bool                    ActiveIdIsJustActivated;            // Set when 
-    bool                    ActiveIdIsFocusedOnly;              // Set only by active widget. Denote focus but no active interaction.
+    bool                    ActiveIdIsJustActivated;            // Set at the time of activation for one frame
+    bool                    ActiveIdIsFocusedOnly;              // Set only by active widget. Denote focus but no active interaction
+    ImGuiWindow*            ActiveIdWindow;
     ImGuiWindow*            MovedWindow;                        // Track the child window we clicked on to move a window. Only valid if ActiveID is the "#MOVE" identifier of a window.
     float                   SettingsDirtyTimer;
     ImVector<ImGuiIniData>  Settings;
@@ -1466,12 +1467,13 @@ static inline ImGuiWindow* GetParentWindow()
     return g.CurrentWindowStack[g.CurrentWindowStack.size() - 2];
 }
 
-static void SetActiveId(ImGuiID id) 
+static void SetActiveId(ImGuiID id, ImGuiWindow* window = NULL) 
 {
     ImGuiState& g = *GImGui;
     g.ActiveId = id; 
     g.ActiveIdIsFocusedOnly = false;
     g.ActiveIdIsJustActivated = true;
+    g.ActiveIdWindow = window;
 }
 
 static void RegisterAliveId(ImGuiID id)
@@ -2379,7 +2381,7 @@ void ImGui::Render()
             {
                 IM_ASSERT(g.MovedWindow == NULL);
                 g.MovedWindow = g.HoveredWindow;
-                SetActiveId(g.HoveredRootWindow->MoveID);
+                SetActiveId(g.HoveredRootWindow->MoveID, g.HoveredRootWindow);
             }
             else if (g.FocusedWindow != NULL)
             {
@@ -4887,7 +4889,7 @@ static bool ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
                 }
                 else
                 {
-                    SetActiveId(id);
+                    SetActiveId(id, window);
                 }
                 FocusWindow(window);
             }
@@ -5537,7 +5539,7 @@ static bool SliderFloatAsInputText(const char* label, float* v, ImGuiID id, int
     char text_buf[64];
     ImFormatString(text_buf, IM_ARRAYSIZE(text_buf), "%.*f", decimal_precision, *v);
 
-    SetActiveId(g.ScalarAsInputTextId);
+    SetActiveId(g.ScalarAsInputTextId, window);
     g.HoveredId = 0;
 
     // Our replacement widget will override the focus ID (registered previously to allow for a TAB focus to happen)
@@ -5767,7 +5769,7 @@ bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, c
     const bool tab_focus_requested = window->FocusItemRegister(g.ActiveId == id);
     if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]))
     {
-        SetActiveId(id);
+        SetActiveId(id, window);
         FocusWindow(window);
 
         const bool is_ctrl_down = g.IO.KeyCtrl;
@@ -5825,7 +5827,7 @@ bool ImGui::VSliderFloat(const char* label, const ImVec2& size, float* v, float
 
     if (hovered && g.IO.MouseClicked[0])
     {
-        SetActiveId(id);
+        SetActiveId(id, window);
         FocusWindow(window);
     }
 
@@ -6071,7 +6073,7 @@ bool ImGui::DragFloat(const char* label, float *v, float v_speed, float v_min, f
     const bool tab_focus_requested = window->FocusItemRegister(g.ActiveId == id);
     if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] | g.IO.MouseDoubleClicked[0])))
     {
-        SetActiveId(id);
+        SetActiveId(id, window);
         FocusWindow(window);
 
         if (tab_focus_requested || g.IO.KeyCtrl || g.IO.MouseDoubleClicked[0])
@@ -6855,16 +6857,14 @@ bool ImGui::InputText(const char* label, char* buf, size_t buf_size, ImGuiInputT
             if (focus_requested_by_tab || (user_clicked && is_ctrl_down))
                 select_all = true;
         }
-        SetActiveId(id);
+        SetActiveId(id, window);
         FocusWindow(window);
     }
     else if (io.MouseClicked[0])
     {
         // Release focus when we click outside
         if (g.ActiveId == id)
-        {
             SetActiveId(0);
-        }
     }
 
     // Although we are active we don't prevent mouse from hovering other elements unless we are interacting right now with the widget.