Updated ImGui.

3rdparty/ocornut-imgui/imgui.cpp

@@ -614,6 +614,7 @@ static inline bool      IsWindowContentHoverable(ImGuiWindow* window);
 static void             ClearSetNextWindowData();
 static void             CheckStacksSize(ImGuiWindow* window, bool write);
 static void             Scrollbar(ImGuiWindow* window, bool horizontal);
+static ImVec2           CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window);
 
 static void             AddDrawListToRenderList(ImVector<ImDrawList*>& out_render_list, ImDrawList* draw_list);
 static void             AddWindowToRenderList(ImVector<ImDrawList*>& out_render_list, ImGuiWindow* window);
@@ -756,25 +757,21 @@ ImGuiIO::ImGuiIO()
     IniSavingRate = 5.0f;
     IniFilename = "imgui.ini";
     LogFilename = "imgui_log.txt";
-    Fonts = &GImDefaultFontAtlas;
-    FontGlobalScale = 1.0f;
-    FontDefault = NULL;
-    DisplayFramebufferScale = ImVec2(1.0f, 1.0f);
-    MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
-    MousePosPrev = ImVec2(-FLT_MAX, -FLT_MAX);
     MouseDoubleClickTime = 0.30f;
     MouseDoubleClickMaxDist = 6.0f;
-    MouseDragThreshold = 6.0f;
-    for (int i = 0; i < IM_ARRAYSIZE(MouseDownDuration); i++)
-        MouseDownDuration[i] = MouseDownDurationPrev[i] = -1.0f;
-    for (int i = 0; i < IM_ARRAYSIZE(KeysDownDuration); i++)
-        KeysDownDuration[i] = KeysDownDurationPrev[i] = -1.0f;
     for (int i = 0; i < ImGuiKey_COUNT; i++)
         KeyMap[i] = -1;
     KeyRepeatDelay = 0.250f;
     KeyRepeatRate = 0.050f;
     UserData = NULL;
 
+    Fonts = &GImDefaultFontAtlas;
+    FontGlobalScale = 1.0f;
+    FontDefault = NULL;
+    FontAllowUserScaling = false;
+    DisplayFramebufferScale = ImVec2(1.0f, 1.0f);
+    DisplayVisibleMin = DisplayVisibleMax = ImVec2(0.0f, 0.0f);
+
     // User functions
     RenderDrawListsFn = NULL;
     MemAllocFn = malloc;
@@ -785,6 +782,13 @@ ImGuiIO::ImGuiIO()
     ImeSetInputScreenPosFn = ImeSetInputScreenPosFn_DefaultImpl;
     ImeWindowHandle = NULL;
 
+    // Input (NB: we already have memset zero the entire structure)
+    MousePos = ImVec2(-FLT_MAX, -FLT_MAX);
+    MousePosPrev = ImVec2(-FLT_MAX, -FLT_MAX);
+    MouseDragThreshold = 6.0f;
+    for (int i = 0; i < IM_ARRAYSIZE(MouseDownDuration); i++) MouseDownDuration[i] = MouseDownDurationPrev[i] = -1.0f;
+    for (int i = 0; i < IM_ARRAYSIZE(KeysDownDuration); i++) KeysDownDuration[i] = KeysDownDurationPrev[i] = -1.0f;
+
     // Set OS X style defaults based on __APPLE__ compile time flag
 #ifdef __APPLE__
     OSXBehaviors = true;
@@ -1257,12 +1261,12 @@ void ImGui::ColorConvertRGBtoHSV(float r, float g, float b, float& out_h, float&
     float K = 0.f;
     if (g < b)
     {
-        const float tmp = g; g = b; b = tmp;
+        ImSwap(g, b);
         K = -1.f;
     }
     if (r < g)
     {
-        const float tmp = r; r = g; g = tmp;
+        ImSwap(r, g);
         K = -2.f / 6.f - K;
     }
 
@@ -1773,14 +1777,13 @@ ImGuiWindow::ImGuiWindow(const char* name)
     Name = ImStrdup(name);
     ID = ImHash(name, 0);
     IDStack.push_back(ID);
-    MoveId = GetID("#MOVE");
-
     Flags = 0;
     OrderWithinParent = 0;
     PosFloat = Pos = ImVec2(0.0f, 0.0f);
     Size = SizeFull = ImVec2(0.0f, 0.0f);
     SizeContents = SizeContentsExplicit = ImVec2(0.0f, 0.0f);
     WindowPadding = ImVec2(0.0f, 0.0f);
+    MoveId = GetID("#MOVE");
     Scroll = ImVec2(0.0f, 0.0f);
     ScrollTarget = ImVec2(FLT_MAX, FLT_MAX);
     ScrollTargetCenterRatio = ImVec2(0.5f, 0.5f);
@@ -1808,9 +1811,9 @@ ImGuiWindow::ImGuiWindow(const char* name)
     DrawList = (ImDrawList*)ImGui::MemAlloc(sizeof(ImDrawList));
     IM_PLACEMENT_NEW(DrawList) ImDrawList();
     DrawList->_OwnerName = Name;
+    ParentWindow = NULL;
     RootWindow = NULL;
     RootNonPopupWindow = NULL;
-    ParentWindow = NULL;
 
     FocusIdxAllCounter = FocusIdxTabCounter = -1;
     FocusIdxAllRequestCurrent = FocusIdxTabRequestCurrent = INT_MAX;
@@ -1870,11 +1873,10 @@ ImGuiWindow* ImGui::GetParentWindow()
 void ImGui::SetActiveID(ImGuiID id, ImGuiWindow* window)
 {
     ImGuiContext& g = *GImGui;
+    g.ActiveIdIsJustActivated = (g.ActiveId != id);
     g.ActiveId = id;
     g.ActiveIdAllowOverlap = false;
-    g.ActiveIdIsJustActivated = true;
-    if (id)
-        g.ActiveIdIsAlive = true;
+    g.ActiveIdIsAlive |= (id != 0);
     g.ActiveIdWindow = window;
 }
 
@@ -1930,15 +1932,15 @@ void ImGui::ItemSize(const ImRect& bb, float text_offset_y)
 // declares their minimum size requirement to ItemSize() and then use a larger region for drawing/interaction, which is passed to ItemAdd().
 bool ImGui::ItemAdd(const ImRect& bb, const ImGuiID* id)
 {
-    ImGuiWindow* window = GetCurrentWindow();
+    ImGuiContext& g = *GImGui;
+    ImGuiWindow* window = g.CurrentWindow;
     window->DC.LastItemId = id ? *id : 0;
     window->DC.LastItemRect = bb;
     window->DC.LastItemHoveredAndUsable = window->DC.LastItemHoveredRect = false;
     if (IsClippedEx(bb, id, false))
         return false;
 
-    // This is a sensible default, but widgets are free to override it after calling ItemAdd()
-    ImGuiContext& g = *GImGui;
+    // Setting LastItemHoveredAndUsable for IsItemHovered(). This is a sensible default, but widgets are free to override it.
     if (IsMouseHoveringRect(bb.Min, bb.Max))
     {
         // Matching the behavior of IsHovered() but allow if ActiveId==window->MoveID (we clicked on the window background)
@@ -1979,7 +1981,7 @@ bool ImGui::IsHovered(const ImRect& bb, ImGuiID id, bool flatten_childs)
     return false;
 }
 
-bool ImGui::FocusableItemRegister(ImGuiWindow* window, bool is_active, bool tab_stop)
+bool ImGui::FocusableItemRegister(ImGuiWindow* window, ImGuiID id, bool tab_stop)
 {
     ImGuiContext& g = *GImGui;
 
@@ -1988,13 +1990,10 @@ bool ImGui::FocusableItemRegister(ImGuiWindow* window, bool is_active, bool tab_
     if (allow_keyboard_focus)
         window->FocusIdxTabCounter++;
 
-    // Process keyboard input at this point: TAB, Shift-TAB switch focus
-    // We can always TAB out of a widget that doesn't allow tabbing in.
-    if (tab_stop && window->FocusIdxAllRequestNext == INT_MAX && window->FocusIdxTabRequestNext == INT_MAX && is_active && IsKeyPressedMap(ImGuiKey_Tab))
-    {
-        // Modulo on index will be applied at the end of frame once we've got the total counter of items.
-        window->FocusIdxTabRequestNext = window->FocusIdxTabCounter + (g.IO.KeyShift ? (allow_keyboard_focus ? -1 : 0) : +1);
-    }
+    // Process keyboard input at this point: TAB/Shift-TAB to tab out of the currently focused item.
+    // Note that we can always TAB out of a widget that doesn't allow tabbing in.
+    if (tab_stop && (g.ActiveId == id) && window->FocusIdxAllRequestNext == INT_MAX && window->FocusIdxTabRequestNext == INT_MAX && !g.IO.KeyCtrl && IsKeyPressedMap(ImGuiKey_Tab))
+        window->FocusIdxTabRequestNext = window->FocusIdxTabCounter + (g.IO.KeyShift ? (allow_keyboard_focus ? -1 : 0) : +1); // Modulo on index will be applied at the end of frame once we've got the total counter of items.
 
     if (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent)
         return true;
@@ -2161,6 +2160,23 @@ void ImGui::NewFrame()
     g.RenderDrawData.CmdLists = NULL;
     g.RenderDrawData.CmdListsCount = g.RenderDrawData.TotalVtxCount = g.RenderDrawData.TotalIdxCount = 0;
 
+    // Clear reference to active widget if the widget isn't alive anymore
+    g.HoveredIdPreviousFrame = g.HoveredId;
+    g.HoveredId = 0;
+    g.HoveredIdAllowOverlap = false;
+    if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
+        ClearActiveID();
+    g.ActiveIdPreviousFrame = g.ActiveId;
+    g.ActiveIdIsAlive = false;
+    g.ActiveIdIsJustActivated = false;
+    if (g.ScalarAsInputTextId && g.ActiveId != g.ScalarAsInputTextId)
+        g.ScalarAsInputTextId = 0;
+
+    // Update keyboard input state
+    memcpy(g.IO.KeysDownDurationPrev, g.IO.KeysDownDuration, sizeof(g.IO.KeysDownDuration));
+    for (int i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++)
+        g.IO.KeysDownDuration[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownDuration[i] < 0.0f ? 0.0f : g.IO.KeysDownDuration[i] + g.IO.DeltaTime) : -1.0f;
+
     // Update mouse input state
     // If mouse just appeared or disappeared (usually denoted by -FLT_MAX component, but in reality we test for -256000.0f) we cancel out movement in MouseDelta
     if (IsMousePosValid(&g.IO.MousePos) && IsMousePosValid(&g.IO.MousePosPrev))
@@ -2195,9 +2211,6 @@ void ImGui::NewFrame()
             g.IO.MouseDragMaxDistanceSqr[i] = ImMax(g.IO.MouseDragMaxDistanceSqr[i], ImLengthSqr(g.IO.MousePos - g.IO.MouseClickedPos[i]));
         }
     }
-    memcpy(g.IO.KeysDownDurationPrev, g.IO.KeysDownDuration, sizeof(g.IO.KeysDownDuration));
-    for (int i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++)
-        g.IO.KeysDownDuration[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownDuration[i] < 0.0f ? 0.0f : g.IO.KeysDownDuration[i] + g.IO.DeltaTime) : -1.0f;
 
     // Calculate frame-rate for the user, as a purely luxurious feature
     g.FramerateSecPerFrameAccum += g.IO.DeltaTime - g.FramerateSecPerFrame[g.FramerateSecPerFrameIdx];
@@ -2205,17 +2218,7 @@ void ImGui::NewFrame()
     g.FramerateSecPerFrameIdx = (g.FramerateSecPerFrameIdx + 1) % IM_ARRAYSIZE(g.FramerateSecPerFrame);
     g.IO.Framerate = 1.0f / (g.FramerateSecPerFrameAccum / (float)IM_ARRAYSIZE(g.FramerateSecPerFrame));
 
-    // Clear reference to active widget if the widget isn't alive anymore
-    g.HoveredIdPreviousFrame = g.HoveredId;
-    g.HoveredId = 0;
-    g.HoveredIdAllowOverlap = false;
-    if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
-        ClearActiveID();
-    g.ActiveIdPreviousFrame = g.ActiveId;
-    g.ActiveIdIsAlive = false;
-    g.ActiveIdIsJustActivated = false;
-
-    // Handle user moving window (at the beginning of the frame to avoid input lag or sheering). Only valid for root windows.
+    // Handle user moving window with mouse (at the beginning of the frame to avoid input lag or sheering). Only valid for root windows.
     if (g.MovedWindowMoveId && g.MovedWindowMoveId == g.ActiveId)
     {
         KeepAliveID(g.MovedWindowMoveId);
@@ -2226,7 +2229,7 @@ void ImGui::NewFrame()
             if (!(g.MovedWindow->Flags & ImGuiWindowFlags_NoMove))
             {
                 g.MovedWindow->PosFloat += g.IO.MouseDelta;
-                if (!(g.MovedWindow->Flags & ImGuiWindowFlags_NoSavedSettings) && (g.IO.MouseDelta.x != 0.0f || g.IO.MouseDelta.y != 0.0f))
+                if (g.IO.MouseDelta.x != 0.0f || g.IO.MouseDelta.y != 0.0f)
                     MarkIniSettingsDirty(g.MovedWindow);
             }
             FocusWindow(g.MovedWindow);
@@ -2634,6 +2637,19 @@ static void AddWindowToRenderList(ImVector<ImDrawList*>& out_render_list, ImGuiW
     }
 }
 
+static void AddWindowToRenderListSelectLayer(ImGuiWindow* window)
+{
+    // FIXME: Generalize this with a proper layering system so e.g. user can draw in specific layers, below text, ..
+    ImGuiContext& g = *GImGui;
+    g.IO.MetricsActiveWindows++;
+    if (window->Flags & ImGuiWindowFlags_Popup)
+        AddWindowToRenderList(g.RenderDrawLists[1], window);
+    else if (window->Flags & ImGuiWindowFlags_Tooltip)
+        AddWindowToRenderList(g.RenderDrawLists[2], window);
+    else
+        AddWindowToRenderList(g.RenderDrawLists[0], window);
+}
+
 // When using this function it is sane to ensure that float are perfectly rounded to integer values, to that e.g. (int)(max.x-min.x) in user's render produce correct result.
 void ImGui::PushClipRect(const ImVec2& clip_rect_min, const ImVec2& clip_rect_max, bool intersect_with_current_clip_rect)
 {
@@ -2735,16 +2751,7 @@ void ImGui::Render()
         {
             ImGuiWindow* window = g.Windows[i];
             if (window->Active && window->HiddenFrames <= 0 && (window->Flags & (ImGuiWindowFlags_ChildWindow)) == 0)
-            {
-                // FIXME: Generalize this with a proper layering system so e.g. user can draw in specific layers, below text, ..
-                g.IO.MetricsActiveWindows++;
-                if (window->Flags & ImGuiWindowFlags_Popup)
-                    AddWindowToRenderList(g.RenderDrawLists[1], window);
-                else if (window->Flags & ImGuiWindowFlags_Tooltip)
-                    AddWindowToRenderList(g.RenderDrawLists[2], window);
-                else
-                    AddWindowToRenderList(g.RenderDrawLists[0], window);
-            }
+                AddWindowToRenderListSelectLayer(window);
         }
 
         // Flatten layers
@@ -3139,7 +3146,7 @@ bool ImGui::IsAnyWindowHovered()
 static bool IsKeyPressedMap(ImGuiKey key, bool repeat)
 {
     const int key_index = GImGui->IO.KeyMap[key];
-    return ImGui::IsKeyPressed(key_index, repeat);
+    return (key_index >= 0) ? ImGui::IsKeyPressed(key_index, repeat) : false;
 }
 
 int ImGui::GetKeyIndex(ImGuiKey imgui_key)
@@ -3156,6 +3163,25 @@ bool ImGui::IsKeyDown(int user_key_index)
     return GImGui->IO.KeysDown[user_key_index];
 }
 
+int ImGui::CalcTypematicPressedRepeatAmount(float t, float t_prev, float repeat_delay, float repeat_rate)
+{
+    if (t == 0.0f)
+        return 1;
+    if (t <= repeat_delay || repeat_rate <= 0.0f)
+        return 0;
+    const int count = (int)((t - repeat_delay) / repeat_rate) - (int)((t_prev - repeat_delay) / repeat_rate);
+    return (count > 0) ? count : 0;
+}
+
+int ImGui::GetKeyPressedAmount(int key_index, float repeat_delay, float repeat_rate)
+{
+    ImGuiContext& g = *GImGui;
+    if (key_index < 0) return false;
+    IM_ASSERT(key_index >= 0 && key_index < IM_ARRAYSIZE(g.IO.KeysDown));
+    const float t = g.IO.KeysDownDuration[key_index];
+    return CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, repeat_delay, repeat_rate);
+}
+
 bool ImGui::IsKeyPressed(int user_key_index, bool repeat)
 {
     ImGuiContext& g = *GImGui;
@@ -3164,13 +3190,8 @@ bool ImGui::IsKeyPressed(int user_key_index, bool repeat)
     const float t = g.IO.KeysDownDuration[user_key_index];
     if (t == 0.0f)
         return true;
-
     if (repeat && t > g.IO.KeyRepeatDelay)
-    {
-        float delay = g.IO.KeyRepeatDelay, rate = g.IO.KeyRepeatRate;
-        if ((fmodf(t - delay, rate) > rate*0.5f) != (fmodf(t - delay - g.IO.DeltaTime, rate) > rate*0.5f))
-            return true;
-    }
+        return GetKeyPressedAmount(user_key_index, g.IO.KeyRepeatDelay, g.IO.KeyRepeatRate) > 0;
     return false;
 }
 
@@ -3710,7 +3731,6 @@ void ImGui::EndChild()
             sz.x = ImMax(4.0f, sz.x);
         if (window->AutoFitChildAxises & 0x02)
             sz.y = ImMax(4.0f, sz.y);
-
         ImGui::End();
 
         ImGuiWindow* parent_window = GetCurrentWindow();
@@ -3883,6 +3903,24 @@ static void ApplySizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
     window->SizeFull = new_size;
 }
 
+static ImVec2 CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window)
+{
+    ImVec2 scroll = window->Scroll;
+    float cr_x = window->ScrollTargetCenterRatio.x;
+    float cr_y = window->ScrollTargetCenterRatio.y;
+    if (window->ScrollTarget.x < FLT_MAX)
+        scroll.x = window->ScrollTarget.x - cr_x * (window->SizeFull.x - window->ScrollbarSizes.x);
+    if (window->ScrollTarget.y < FLT_MAX)
+        scroll.y = window->ScrollTarget.y - (1.0f - cr_y) * (window->TitleBarHeight() + window->MenuBarHeight()) - cr_y * (window->SizeFull.y - window->ScrollbarSizes.y);
+    scroll = ImMax(scroll, ImVec2(0.0f, 0.0f));
+    if (!window->Collapsed && !window->SkipItems)
+    {
+        scroll.x = ImMin(scroll.x, ImMax(0.0f, window->SizeContents.x - (window->SizeFull.x - window->ScrollbarSizes.x))); // == GetScrollMaxX for that window
+        scroll.y = ImMin(scroll.y, ImMax(0.0f, window->SizeContents.y - (window->SizeFull.y - window->ScrollbarSizes.y))); // == GetScrollMaxY for that window
+    }
+    return scroll;
+}
+
 // Push a new ImGui window to add widgets to.
 // - A default window called "Debug" is automatically stacked at the beginning of every frame so you can use widgets without explicitly calling a Begin/End pair.
 // - Begin/End can be called multiple times during the frame with the same window name to append content.
@@ -3997,11 +4035,12 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         if (!(g.CurrentWindowStack[root_idx]->Flags & ImGuiWindowFlags_ChildWindow))
             break;
     for (root_non_popup_idx = root_idx; root_non_popup_idx > 0; root_non_popup_idx--)
-        if (!(g.CurrentWindowStack[root_non_popup_idx]->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Popup)))
+        if (!(g.CurrentWindowStack[root_non_popup_idx]->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Popup)) || (g.CurrentWindowStack[root_non_popup_idx]->Flags & ImGuiWindowFlags_Modal))
             break;
     window->ParentWindow = parent_window;
     window->RootWindow = g.CurrentWindowStack[root_idx];
-    window->RootNonPopupWindow = g.CurrentWindowStack[root_non_popup_idx];      // This is merely for displaying the TitleBgActive color.
+    window->RootNonPopupWindow = g.CurrentWindowStack[root_non_popup_idx];      // Used to display TitleBgActive color and for selecting which window to use for NavWindowing
+
 
     // When reusing window again multiple times a frame, just append content (don't need to setup again)
     if (first_begin_of_the_frame)
@@ -4164,10 +4203,11 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         // Position tooltip (always follows mouse)
         if ((flags & ImGuiWindowFlags_Tooltip) != 0 && !window_pos_set_by_api)
         {
-            ImRect rect_to_avoid(g.IO.MousePos.x - 16, g.IO.MousePos.y - 8, g.IO.MousePos.x + 24, g.IO.MousePos.y + 24); // FIXME: Completely hard-coded. Perhaps center on cursor hit-point instead?
-            window->PosFloat = FindBestPopupWindowPos(g.IO.MousePos, window->Size, &window->AutoPosLastDirection, rect_to_avoid);
+            ImVec2 ref_pos = g.IO.MousePos;
+            ImRect rect_to_avoid(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24, ref_pos.y + 24); // FIXME: Completely hard-coded. Perhaps center on cursor hit-point instead?
+            window->PosFloat = FindBestPopupWindowPos(ref_pos, window->Size, &window->AutoPosLastDirection, rect_to_avoid);
             if (window->AutoPosLastDirection == -1)
-                window->PosFloat = g.IO.MousePos + ImVec2(2,2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
+                window->PosFloat = ref_pos + ImVec2(2,2); // If there's not enough room, for tooltip we prefer avoiding the cursor at all cost even if it means that part of the tooltip won't be visible.
         }
 
         // Clamp position so it stays visible
@@ -4195,23 +4235,8 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         window->FocusIdxAllRequestNext = window->FocusIdxTabRequestNext = INT_MAX;
 
         // Apply scrolling
-        if (window->ScrollTarget.x < FLT_MAX)
-        {
-            window->Scroll.x = window->ScrollTarget.x;
-            window->ScrollTarget.x = FLT_MAX;
-        }
-        if (window->ScrollTarget.y < FLT_MAX)
-        {
-            float center_ratio = window->ScrollTargetCenterRatio.y;
-            window->Scroll.y = window->ScrollTarget.y - ((1.0f - center_ratio) * (window->TitleBarHeight() + window->MenuBarHeight())) - (center_ratio * (window->SizeFull.y - window->ScrollbarSizes.y));
-            window->ScrollTarget.y = FLT_MAX;
-        }
-        window->Scroll = ImMax(window->Scroll, ImVec2(0.0f, 0.0f));
-        if (!window->Collapsed && !window->SkipItems)
-        {
-            window->Scroll.x = ImMin(window->Scroll.x, GetScrollMaxX());
-            window->Scroll.y = ImMin(window->Scroll.y, GetScrollMaxY());
-        }
+        window->Scroll = CalcNextScrollFromScrollTargetAndClamp(window);
+        window->ScrollTarget = ImVec2(FLT_MAX, FLT_MAX);
 
         // Modal window darkens what is behind them
         if ((flags & ImGuiWindowFlags_Modal) != 0 && window == GetFrontMostModalRootWindow())
@@ -4222,8 +4247,8 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         const float window_rounding = (flags & ImGuiWindowFlags_ChildWindow) ? style.ChildWindowRounding : style.WindowRounding;
         if (window->Collapsed)
         {
-            // Draw title bar only
-            RenderFrame(title_bar_rect.GetTL(), title_bar_rect.GetBR(),  GetColorU32(ImGuiCol_TitleBgCollapsed), true, window_rounding);
+            // Title bar only
+            RenderFrame(title_bar_rect.GetTL(), title_bar_rect.GetBR(), GetColorU32(ImGuiCol_TitleBgCollapsed), true, window_rounding);
         }
         else
         {
@@ -4238,24 +4263,27 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
                 bool hovered, held;
                 ButtonBehavior(resize_rect, resize_id, &hovered, &held, ImGuiButtonFlags_FlattenChilds);
                 resize_col = GetColorU32(held ? ImGuiCol_ResizeGripActive : hovered ? ImGuiCol_ResizeGripHovered : ImGuiCol_ResizeGrip);
-
                 if (hovered || held)
                     g.MouseCursor = ImGuiMouseCursor_ResizeNWSE;
 
+                ImVec2 size_target(FLT_MAX,FLT_MAX);
                 if (g.HoveredWindow == window && held && g.IO.MouseDoubleClicked[0])
                 {
                     // Manual auto-fit when double-clicking
-                    ApplySizeFullWithConstraint(window, size_auto_fit);
-                    MarkIniSettingsDirty(window);
+                    size_target = size_auto_fit;
                     ClearActiveID();
                 }
                 else if (held)
                 {
                     // We don't use an incremental MouseDelta but rather compute an absolute target size based on mouse position
-                    ApplySizeFullWithConstraint(window, (g.IO.MousePos - g.ActiveIdClickOffset + resize_rect.GetSize()) - window->Pos);
-                    MarkIniSettingsDirty(window);
+                    size_target = (g.IO.MousePos - g.ActiveIdClickOffset + resize_rect.GetSize()) - window->Pos;
                 }
 
+                if (size_target.x != FLT_MAX && size_target.y != FLT_MAX)
+                {
+                    ApplySizeFullWithConstraint(window, size_target);
+                    MarkIniSettingsDirty(window);
+                }
                 window->Size = window->SizeFull;
                 title_bar_rect = window->TitleBarRect();
             }
@@ -4281,11 +4309,12 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
                 bg_color.w = bg_alpha;
             bg_color.w *= style.Alpha;
             if (bg_color.w > 0.0f)
-                window->DrawList->AddRectFilled(window->Pos+ImVec2(0,window->TitleBarHeight()), window->Pos+window->Size, ColorConvertFloat4ToU32(bg_color), window_rounding, (flags & ImGuiWindowFlags_NoTitleBar) ? ImGuiCorner_All : ImGuiCorner_BottomLeft|ImGuiCorner_BottomRight);
+                window->DrawList->AddRectFilled(window->Pos+ImVec2(0,window->TitleBarHeight()), window->Pos+window->Size, ColorConvertFloat4ToU32(bg_color), window_rounding, (flags & ImGuiWindowFlags_NoTitleBar) ? ImGuiCorner_All : ImGuiCorner_BotLeft|ImGuiCorner_BotRight);
 
             // Title bar
+            const bool is_focused = g.NavWindow && window->RootNonPopupWindow == g.NavWindow->RootNonPopupWindow;
             if (!(flags & ImGuiWindowFlags_NoTitleBar))
-                window->DrawList->AddRectFilled(title_bar_rect.GetTL(), title_bar_rect.GetBR(), GetColorU32((g.NavWindow && window->RootNonPopupWindow == g.NavWindow->RootNonPopupWindow) ? ImGuiCol_TitleBgActive : ImGuiCol_TitleBg), window_rounding, ImGuiCorner_TopLeft|ImGuiCorner_TopRight);
+                window->DrawList->AddRectFilled(title_bar_rect.GetTL(), title_bar_rect.GetBR(), GetColorU32(is_focused ? ImGuiCol_TitleBgActive : ImGuiCol_TitleBg), window_rounding, ImGuiCorner_TopLeft|ImGuiCorner_TopRight);
 
             // Menu bar
             if (flags & ImGuiWindowFlags_MenuBar)
@@ -4375,11 +4404,12 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         // Title bar
         if (!(flags & ImGuiWindowFlags_NoTitleBar))
         {
+            // Close button
             if (p_open != NULL)
             {
-                const float pad = 2.0f;
-                const float rad = (window->TitleBarHeight() - pad*2.0f) * 0.5f;
-                if (CloseButton(window->GetID("#CLOSE"), window->Rect().GetTR() + ImVec2(-pad - rad, pad + rad), rad))
+                const float PAD = 2.0f;
+                const float rad = (window->TitleBarHeight() - PAD*2.0f) * 0.5f;
+                if (CloseButton(window->GetID("#CLOSE"), window->Rect().GetTR() + ImVec2(-PAD - rad, PAD + rad), rad))
                     *p_open = false;
             }
 
@@ -4505,9 +4535,9 @@ static void Scrollbar(ImGuiWindow* window, bool horizontal)
     float window_rounding = (window->Flags & ImGuiWindowFlags_ChildWindow) ? style.ChildWindowRounding : style.WindowRounding;
     int window_rounding_corners;
     if (horizontal)
-        window_rounding_corners = ImGuiCorner_BottomLeft | (other_scrollbar ? 0 : ImGuiCorner_BottomRight);
+        window_rounding_corners = ImGuiCorner_BotLeft | (other_scrollbar ? 0 : ImGuiCorner_BotRight);
     else
-        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImGuiCorner_TopRight : 0) | (other_scrollbar ? 0 : ImGuiCorner_BottomRight);
+        window_rounding_corners = (((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImGuiCorner_TopRight : 0) | (other_scrollbar ? 0 : ImGuiCorner_BotRight);
     window->DrawList->AddRectFilled(bb.Min, bb.Max, ImGui::GetColorU32(ImGuiCol_ScrollbarBg), window_rounding, window_rounding_corners);
     bb.Expand(ImVec2(-ImClamp((float)(int)((bb.Max.x - bb.Min.x - 2.0f) * 0.5f), 0.0f, 3.0f), -ImClamp((float)(int)((bb.Max.y - bb.Min.y - 2.0f) * 0.5f), 0.0f, 3.0f)));
 
@@ -6458,11 +6488,6 @@ bool ImGui::InputScalarAsWidgetReplacement(const ImRect& aabb, const char* label
         g.ScalarAsInputTextId = g.ActiveId;
         SetHoveredID(id);
     }
-    else if (g.ActiveId != g.ScalarAsInputTextId)
-    {
-        // Release
-        g.ScalarAsInputTextId = 0;
-    }
     if (text_value_changed)
         return DataTypeApplyOpFromText(buf, GImGui->InputTextState.InitialText.begin(), data_type, data_ptr, NULL);
     return false;
@@ -6690,7 +6715,7 @@ bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, c
 
     // Tabbing or CTRL-clicking on Slider turns it into an input box
     bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, g.ActiveId == id);
+    const bool tab_focus_requested = FocusableItemRegister(window, id);
     if (tab_focus_requested || (hovered && g.IO.MouseClicked[0]))
     {
         SetActiveID(id, window);
@@ -6705,9 +6730,8 @@ bool ImGui::SliderFloat(const char* label, float* v, float v_min, float v_max, c
     if (start_text_input || (g.ActiveId == id && g.ScalarAsInputTextId == id))
         return InputScalarAsWidgetReplacement(frame_bb, label, ImGuiDataType_Float, v, id, decimal_precision);
 
-    ItemSize(total_bb, style.FramePadding.y);
-
     // Actual slider behavior + render grab
+    ItemSize(total_bb, style.FramePadding.y);
     const bool value_changed = SliderBehavior(frame_bb, id, v, v_min, v_max, power, decimal_precision);
 
     // Display value using user-provided display format so user can add prefix/suffix/decorations to the value.
@@ -6907,15 +6931,20 @@ bool ImGui::DragBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_s
                 v_speed = (v_max - v_min) * g.DragSpeedDefaultRatio;
             float v_cur = g.DragCurrentValue;
             const ImVec2 mouse_drag_delta = GetMouseDragDelta(0, 1.0f);
-            if (fabsf(mouse_drag_delta.x - g.DragLastMouseDelta.x) > 0.0f)
+            float adjust_delta = 0.0f;
+            //if (g.ActiveIdSource == ImGuiInputSource_Mouse)
             {
-                float speed = v_speed;
+                adjust_delta = mouse_drag_delta.x - g.DragLastMouseDelta.x;
                 if (g.IO.KeyShift && g.DragSpeedScaleFast >= 0.0f)
-                    speed = speed * g.DragSpeedScaleFast;
+                    adjust_delta *= g.DragSpeedScaleFast;
                 if (g.IO.KeyAlt && g.DragSpeedScaleSlow >= 0.0f)
-                    speed = speed * g.DragSpeedScaleSlow;
+                    adjust_delta *= g.DragSpeedScaleSlow;
+            }
+            adjust_delta *= v_speed;
+            g.DragLastMouseDelta.x = mouse_drag_delta.x;
 
-                float adjust_delta = (mouse_drag_delta.x - g.DragLastMouseDelta.x) * speed;
+            if (fabsf(adjust_delta) > 0.0f)
+            {
                 if (fabsf(power - 1.0f) > 0.001f)
                 {
                     // Logarithmic curve on both side of 0.0
@@ -6930,7 +6959,6 @@ bool ImGui::DragBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_s
                 {
                     v_cur += adjust_delta;
                 }
-                g.DragLastMouseDelta.x = mouse_drag_delta.x;
 
                 // Clamp
                 if (v_min < v_max)
@@ -6988,7 +7016,7 @@ bool ImGui::DragFloat(const char* label, float* v, float v_speed, float v_min, f
 
     // Tabbing or CTRL-clicking on Drag turns it into an input box
     bool start_text_input = false;
-    const bool tab_focus_requested = FocusableItemRegister(window, g.ActiveId == id);
+    const bool tab_focus_requested = FocusableItemRegister(window, id);
     if (tab_focus_requested || (hovered && (g.IO.MouseClicked[0] | g.IO.MouseDoubleClicked[0])))
     {
         SetActiveID(id, window);
@@ -7329,7 +7357,7 @@ void ImGui::ProgressBar(float fraction, const ImVec2& size_arg, const char* over
     RenderFrame(bb.Min, bb.Max, GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
     bb.Expand(ImVec2(-window->BorderSize, -window->BorderSize));
     const ImVec2 fill_br = ImVec2(ImLerp(bb.Min.x, bb.Max.x, fraction), bb.Max.y);
-    RenderFrame(bb.Min, fill_br, GetColorU32(ImGuiCol_PlotHistogram), false, style.FrameRounding);
+    RenderRectFilledRangeH(window->DrawList, bb, GetColorU32(ImGuiCol_PlotHistogram), 0.0f, fraction, style.FrameRounding);
 
     // Default displaying the fraction as percentage string, but user can override it
     char overlay_buf[32];
@@ -7793,7 +7821,7 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
     // NB: we are only allowed to access 'edit_state' if we are the active widget.
     ImGuiTextEditState& edit_state = g.InputTextState;
 
-    const bool focus_requested = FocusableItemRegister(window, g.ActiveId == id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
+    const bool focus_requested = FocusableItemRegister(window, id, (flags & (ImGuiInputTextFlags_CallbackCompletion|ImGuiInputTextFlags_AllowTabInput)) == 0);    // Using completion callback disable keyboard tabbing
     const bool focus_requested_by_code = focus_requested && (window->FocusIdxAllCounter == window->FocusIdxAllRequestCurrent);
     const bool focus_requested_by_tab = focus_requested && !focus_requested_by_code;
 
@@ -7806,6 +7834,8 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
     const bool user_clicked = hovered && io.MouseClicked[0];
     const bool user_scrolled = is_multiline && g.ActiveId == 0 && edit_state.Id == id && g.ActiveIdPreviousFrame == draw_window->GetIDNoKeepAlive("#SCROLLY");
 
+    bool clear_active_id = false;
+
     bool select_all = (g.ActiveId != id) && (flags & ImGuiInputTextFlags_AutoSelectAll) != 0;
     if (focus_requested || user_clicked || user_scrolled)
     {
@@ -7851,8 +7881,7 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
     else if (io.MouseClicked[0])
     {
         // Release focus when we click outside
-        if (g.ActiveId == id)
-            ClearActiveID();
+        clear_active_id = true;
     }
 
     bool value_changed = false;
@@ -7925,9 +7954,12 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
             // Consume characters
             memset(g.IO.InputCharacters, 0, sizeof(g.IO.InputCharacters));
         }
+    }
 
-        // Handle various key-presses
-        bool cancel_edit = false;
+    bool cancel_edit = false;
+    if (g.ActiveId == id && !g.ActiveIdIsJustActivated && !clear_active_id)
+    {
+        // Handle key-presses
         const int k_mask = (io.KeyShift ? STB_TEXTEDIT_K_SHIFT : 0);
         const bool is_shortcut_key_only = (io.OSXBehaviors ? (io.KeySuper && !io.KeyCtrl) : (io.KeyCtrl && !io.KeySuper)) && !io.KeyAlt && !io.KeyShift; // OS X style: Shortcuts using Cmd/Super instead of Ctrl
         const bool is_wordmove_key_down = io.OSXBehaviors ? io.KeyAlt : io.KeyCtrl;                     // OS X style: Text editing cursor movement using Alt instead of Ctrl
@@ -7954,8 +7986,7 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
             bool ctrl_enter_for_new_line = (flags & ImGuiInputTextFlags_CtrlEnterForNewLine) != 0;
             if (!is_multiline || (ctrl_enter_for_new_line && !io.KeyCtrl) || (!ctrl_enter_for_new_line && io.KeyCtrl))
             {
-                ClearActiveID();
-                enter_pressed = true;
+                enter_pressed = clear_active_id = true;
             }
             else if (is_editable)
             {
@@ -7970,10 +8001,10 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
             if (InputTextFilterCharacter(&c, flags, callback, user_data))
                 edit_state.OnKeyPressed((int)c);
         }
-        else if (IsKeyPressedMap(ImGuiKey_Escape))                                     { ClearActiveID(); cancel_edit = true; }
-        else if (is_shortcut_key_only && IsKeyPressedMap(ImGuiKey_Z) && is_editable)   { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UNDO); edit_state.ClearSelection(); }
-        else if (is_shortcut_key_only && IsKeyPressedMap(ImGuiKey_Y) && is_editable)   { edit_state.OnKeyPressed(STB_TEXTEDIT_K_REDO); edit_state.ClearSelection(); }
-        else if (is_shortcut_key_only && IsKeyPressedMap(ImGuiKey_A))                  { edit_state.SelectAll(); edit_state.CursorFollow = true; }
+        else if (IsKeyPressedMap(ImGuiKey_Escape))                                      { clear_active_id = cancel_edit = true; }
+        else if (is_shortcut_key_only && IsKeyPressedMap(ImGuiKey_Z) && is_editable)    { edit_state.OnKeyPressed(STB_TEXTEDIT_K_UNDO); edit_state.ClearSelection(); }
+        else if (is_shortcut_key_only && IsKeyPressedMap(ImGuiKey_Y) && is_editable)    { edit_state.OnKeyPressed(STB_TEXTEDIT_K_REDO); edit_state.ClearSelection(); }
+        else if (is_shortcut_key_only && IsKeyPressedMap(ImGuiKey_A))                   { edit_state.SelectAll(); edit_state.CursorFollow = true; }
         else if (is_shortcut_key_only && !is_password && ((IsKeyPressedMap(ImGuiKey_X) && is_editable) || IsKeyPressedMap(ImGuiKey_C)) && (!is_multiline || edit_state.HasSelection()))
         {
             // Cut, Copy
@@ -8024,7 +8055,10 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
                 ImGui::MemFree(clipboard_filtered);
             }
         }
+    }
 
+    if (g.ActiveId == id)
+    {
         if (cancel_edit)
         {
             // Restore initial value
@@ -8034,7 +8068,11 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
                 value_changed = true;
             }
         }
-        else
+
+        // When using 'ImGuiInputTextFlags_EnterReturnsTrue' as a special case we reapply the live buffer back to the input buffer before clearing ActiveId, even though strictly speaking it wasn't modified on this frame.
+        // If we didn't do that, code like InputInt() with ImGuiInputTextFlags_EnterReturnsTrue would fail. Also this allows the user to use InputText() with ImGuiInputTextFlags_EnterReturnsTrue without maintaining any user-side storage.
+        bool apply_edit_back_to_user_buffer = !cancel_edit || (enter_pressed && (flags & ImGuiInputTextFlags_EnterReturnsTrue) != 0);
+        if (apply_edit_back_to_user_buffer)
         {
             // Apply new value immediately - copy modified buffer back
             // Note that as soon as the input box is active, the in-widget value gets priority over any underlying modification of the input buffer
@@ -8122,6 +8160,10 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
         }
     }
 
+    // Release active ID at the end of the function (so e.g. pressing Return still does a final application of the value)
+    if (clear_active_id && g.ActiveId == id)
+        ClearActiveID();
+
     // Render
     // Select which buffer we are going to display. When ImGuiInputTextFlags_NoLiveEdit is set 'buf' might still be the old value. We set buf to NULL to prevent accidental usage from now on.
     const char* buf_display = (g.ActiveId == id && is_editable) ? edit_state.TempTextBuffer.Data : buf; buf = NULL; 
@@ -8961,6 +9003,7 @@ bool ImGui::BeginMenu(const char* label, bool enabled)
     }
 
     bool hovered = enabled && IsHovered(window->DC.LastItemRect, id);
+
     if (menuset_is_open)
         g.NavWindow = backed_nav_window;
 
@@ -9091,7 +9134,7 @@ void ImGui::RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU
                     continue;
                 int rounding_corners_flags_cell = 0;
                 if (y1 <= p_min.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImGuiCorner_TopLeft;    if (x2 >= p_max.x) rounding_corners_flags_cell |= ImGuiCorner_TopRight; }
-                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImGuiCorner_BottomLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImGuiCorner_BottomRight; }
+                if (y2 >= p_max.y) { if (x1 <= p_min.x) rounding_corners_flags_cell |= ImGuiCorner_BotLeft; if (x2 >= p_max.x) rounding_corners_flags_cell |= ImGuiCorner_BotRight; }
                 rounding_corners_flags_cell &= rounding_corners_flags;
                 window->DrawList->AddRectFilled(ImVec2(x1,y1), ImVec2(x2,y2), col_bg2, rounding_corners_flags_cell ? rounding : 0.0f, rounding_corners_flags_cell);
             }
@@ -9151,8 +9194,8 @@ bool ImGui::ColorButton(const char* desc_id, const ImVec4& col, ImGuiColorEditFl
     if ((flags & ImGuiColorEditFlags_AlphaPreviewHalf) && col.w < 1.0f)
     {
         float mid_x = (float)(int)((bb.Min.x + bb.Max.x) * 0.5f + 0.5f);
-        RenderColorRectWithAlphaCheckerboard(ImVec2(bb.Min.x + grid_step, bb.Min.y), bb.Max, GetColorU32(col), grid_step, ImVec2(-grid_step, 0.0f), rounding, ImGuiCorner_TopRight|ImGuiCorner_BottomRight);
-        window->DrawList->AddRectFilled(bb.Min, ImVec2(mid_x, bb.Max.y), GetColorU32(col_without_alpha), rounding, ImGuiCorner_TopLeft|ImGuiCorner_BottomLeft);
+        RenderColorRectWithAlphaCheckerboard(ImVec2(bb.Min.x + grid_step, bb.Min.y), bb.Max, GetColorU32(col), grid_step, ImVec2(-grid_step, 0.0f), rounding, ImGuiCorner_TopRight|ImGuiCorner_BotRight);
+        window->DrawList->AddRectFilled(bb.Min, ImVec2(mid_x, bb.Max.y), GetColorU32(col_without_alpha), rounding, ImGuiCorner_TopLeft|ImGuiCorner_BotLeft);
     }
     else
     {

3rdparty/ocornut-imgui/imgui.h

@@ -412,11 +412,11 @@ namespace ImGui
     IMGUI_API void          PopClipRect();
 
     // Utilities
-    IMGUI_API bool          IsItemHovered();                                                    // was the last item hovered by mouse?
-    IMGUI_API bool          IsItemRectHovered();                                                // was the last item hovered by mouse? even if another item is active or window is blocked by popup while we are hovering this
-    IMGUI_API bool          IsItemActive();                                                     // was the last item active? (e.g. button being held, text field being edited- items that don't interact will always return false)
-    IMGUI_API bool          IsItemClicked(int mouse_button = 0);                                // was the last item clicked? (e.g. button/node just clicked on)
-    IMGUI_API bool          IsItemVisible();                                                    // was the last item visible? (aka not out of sight due to clipping/scrolling.)
+    IMGUI_API bool          IsItemHovered();                                                    // is the last item hovered by mouse (and usable)?
+    IMGUI_API bool          IsItemRectHovered();                                                // is the last item hovered by mouse? even if another item is active or window is blocked by popup while we are hovering this
+    IMGUI_API bool          IsItemActive();                                                     // is the last item active? (e.g. button being held, text field being edited- items that don't interact will always return false)
+    IMGUI_API bool          IsItemClicked(int mouse_button = 0);                                // is the last item clicked? (e.g. button/node just clicked on)
+    IMGUI_API bool          IsItemVisible();                                                    // is the last item visible? (aka not out of sight due to clipping/scrolling.)
     IMGUI_API bool          IsAnyItemHovered();
     IMGUI_API bool          IsAnyItemActive();
     IMGUI_API ImVec2        GetItemRectMin();                                                   // get bounding rect of last item in screen space
@@ -425,7 +425,7 @@ namespace ImGui
     IMGUI_API void          SetItemAllowOverlap();                                              // allow last item to be overlapped by a subsequent item. sometimes useful with invisible buttons, selectables, etc. to catch unused area.
     IMGUI_API bool          IsWindowFocused();                                                  // is current window focused
     IMGUI_API bool          IsWindowHovered();                                                  // is current window hovered and hoverable (not blocked by a popup) (differentiate child windows from each others)
-    IMGUI_API bool          IsWindowRectHovered();                                              // is current window rectnagle hovered, disregarding of any consideration of being blocked by a popup. (unlike IsWindowHovered() this will return true even if the window is blocked because of a popup)
+    IMGUI_API bool          IsWindowRectHovered();                                              // is current window rectangle hovered, disregarding of any consideration of being blocked by a popup. (unlike IsWindowHovered() this will return true even if the window is blocked because of a popup)
     IMGUI_API bool          IsRootWindowFocused();                                              // is current root window focused (root = top-most parent of a child, otherwise self)
     IMGUI_API bool          IsRootWindowOrAnyChildFocused();                                    // is current root window or any of its child (including current window) focused
     IMGUI_API bool          IsRootWindowOrAnyChildHovered();                                    // is current root window or any of its child (including current window) hovered and hoverable (not blocked by a popup)
@@ -452,6 +452,7 @@ namespace ImGui
     IMGUI_API bool          IsKeyDown(int user_key_index);                                      // is key being held. == io.KeysDown[user_key_index]. note that imgui doesn't know the semantic of each entry of io.KeyDown[]. Use your own indices/enums according to how your backend/engine stored them into KeyDown[]!
     IMGUI_API bool          IsKeyPressed(int user_key_index, bool repeat = true);               // was key pressed (went from !Down to Down). if repeat=true, uses io.KeyRepeatDelay / KeyRepeatRate
     IMGUI_API bool          IsKeyReleased(int user_key_index);                                  // was key released (went from Down to !Down)..
+    IMGUI_API int           GetKeyPressedAmount(int key_index, float repeat_delay, float rate); // uses provided repeat rate/delay. return a count, most often 0 or 1 but might be >1 if RepeatRate is small enough that DeltaTime > RepeatRate
     IMGUI_API bool          IsMouseDown(int button);                                            // is mouse button held
     IMGUI_API bool          IsMouseClicked(int button, bool repeat = false);                    // did mouse button clicked (went from !Down to Down)
     IMGUI_API bool          IsMouseDoubleClicked(int button);                                   // did mouse button double-clicked. a double-click returns false in IsMouseClicked(). uses io.MouseDoubleClickTime.
@@ -788,7 +789,7 @@ struct ImGuiIO
     float         MouseDragThreshold;       // = 6.0f               // Distance threshold before considering we are dragging
     int           KeyMap[ImGuiKey_COUNT];   // <unset>              // Map of indices into the KeysDown[512] entries array
     float         KeyRepeatDelay;           // = 0.250f             // When holding a key/button, time before it starts repeating, in seconds (for buttons in Repeat mode, etc.).
-    float         KeyRepeatRate;            // = 0.020f             // When holding a key/button, rate at which it repeats, in seconds.
+    float         KeyRepeatRate;            // = 0.050f             // When holding a key/button, rate at which it repeats, in seconds.
     void*         UserData;                 // = NULL               // Store your own data for retrieval by callbacks.
 
     ImFontAtlas*  Fonts;                    // <auto>               // Load and assemble one or more fonts into a single tightly packed texture. Output to Fonts array.

3rdparty/ocornut-imgui/imgui_demo.cpp

@@ -2107,7 +2107,7 @@ static void ShowExampleAppConstrainedResize(bool* p_open)
         ImGui::Combo("Constraint", &type, desc, IM_ARRAYSIZE(desc)); 
         if (ImGui::Button("200x200")) { ImGui::SetWindowSize(ImVec2(200,200)); } ImGui::SameLine();
         if (ImGui::Button("500x500")) { ImGui::SetWindowSize(ImVec2(500,500)); } ImGui::SameLine();
-        if (ImGui::Button("800x200")) ImGui::SetWindowSize(ImVec2(800,200));
+        if (ImGui::Button("800x200")) { ImGui::SetWindowSize(ImVec2(800,200)); }
         for (int i = 0; i < 10; i++) 
             ImGui::Text("Hello, sailor! Making this line long enough for the example.");
     }

3rdparty/ocornut-imgui/imgui_draw.cpp

@@ -696,30 +696,30 @@ void ImDrawList::PathArcToFast(const ImVec2& centre, float radius, int a_min_of_
         circle_vtx_builds = true;
     }
 
-    if (a_min_of_12 > a_max_of_12) return;
-    if (radius == 0.0f)
+    if (radius == 0.0f || a_min_of_12 > a_max_of_12)
     {
         _Path.push_back(centre);
+        return;
     }
-    else
+    _Path.reserve(_Path.Size + (a_max_of_12 - a_min_of_12 + 1));
+    for (int a = a_min_of_12; a <= a_max_of_12; a++)
     {
-        _Path.reserve(_Path.Size + (a_max_of_12 - a_min_of_12 + 1));
-        for (int a = a_min_of_12; a <= a_max_of_12; a++)
-        {
-            const ImVec2& c = circle_vtx[a % circle_vtx_count];
-            _Path.push_back(ImVec2(centre.x + c.x * radius, centre.y + c.y * radius));
-        }
+        const ImVec2& c = circle_vtx[a % circle_vtx_count];
+        _Path.push_back(ImVec2(centre.x + c.x * radius, centre.y + c.y * radius));
     }
 }
 
-void ImDrawList::PathArcTo(const ImVec2& centre, float radius, float amin, float amax, int num_segments)
+void ImDrawList::PathArcTo(const ImVec2& centre, float radius, float a_min, float a_max, int num_segments)
 {
     if (radius == 0.0f)
+    {
         _Path.push_back(centre);
+        return;
+    }
     _Path.reserve(_Path.Size + (num_segments + 1));
     for (int i = 0; i <= num_segments; i++)
     {
-        const float a = amin + ((float)i / (float)num_segments) * (amax - amin);
+        const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);
         _Path.push_back(ImVec2(centre.x + cosf(a) * radius, centre.y + sinf(a) * radius));
     }
 }
@@ -777,31 +777,30 @@ void ImDrawList::PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImV
 void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, int rounding_corners)
 {
     const int corners_top = ImGuiCorner_TopLeft | ImGuiCorner_TopRight;
-    const int corners_bottom = ImGuiCorner_BottomLeft | ImGuiCorner_BottomRight;
-    const int corners_left = ImGuiCorner_TopLeft | ImGuiCorner_BottomLeft;
-    const int corners_right = ImGuiCorner_TopRight | ImGuiCorner_BottomRight;
+    const int corners_bottom = ImGuiCorner_BotLeft | ImGuiCorner_BotRight;
+    const int corners_left = ImGuiCorner_TopLeft | ImGuiCorner_BotLeft;
+    const int corners_right = ImGuiCorner_TopRight | ImGuiCorner_BotRight;
 
-    float r = rounding;
-    r = ImMin(r, fabsf(b.x-a.x) * ( ((rounding_corners & corners_top)  == corners_top)  || ((rounding_corners & corners_bottom) == corners_bottom) ? 0.5f : 1.0f ) - 1.0f);
-    r = ImMin(r, fabsf(b.y-a.y) * ( ((rounding_corners & corners_left) == corners_left) || ((rounding_corners & corners_right)  == corners_right)  ? 0.5f : 1.0f ) - 1.0f);
+    rounding = ImMin(rounding, fabsf(b.x - a.x) * ( ((rounding_corners & corners_top)  == corners_top)  || ((rounding_corners & corners_bottom) == corners_bottom) ? 0.5f : 1.0f ) - 1.0f);
+    rounding = ImMin(rounding, fabsf(b.y - a.y) * ( ((rounding_corners & corners_left) == corners_left) || ((rounding_corners & corners_right)  == corners_right)  ? 0.5f : 1.0f ) - 1.0f);
 
-    if (r <= 0.0f || rounding_corners == 0)
+    if (rounding <= 0.0f || rounding_corners == 0)
     {
         PathLineTo(a);
-        PathLineTo(ImVec2(b.x,a.y));
+        PathLineTo(ImVec2(b.x, a.y));
         PathLineTo(b);
-        PathLineTo(ImVec2(a.x,b.y));
+        PathLineTo(ImVec2(a.x, b.y));
     }
     else
     {
-        const float r0 = (rounding_corners & ImGuiCorner_TopLeft) ? r : 0.0f;
-        const float r1 = (rounding_corners & ImGuiCorner_TopRight) ? r : 0.0f;
-        const float r2 = (rounding_corners & ImGuiCorner_BottomRight) ? r : 0.0f;
-        const float r3 = (rounding_corners & ImGuiCorner_BottomLeft) ? r : 0.0f;
-        PathArcToFast(ImVec2(a.x+r0,a.y+r0), r0, 6, 9);
-        PathArcToFast(ImVec2(b.x-r1,a.y+r1), r1, 9, 12);
-        PathArcToFast(ImVec2(b.x-r2,b.y-r2), r2, 0, 3);
-        PathArcToFast(ImVec2(a.x+r3,b.y-r3), r3, 3, 6);
+        const float rounding_tl = (rounding_corners & ImGuiCorner_TopLeft) ? rounding : 0.0f;
+        const float rounding_tr = (rounding_corners & ImGuiCorner_TopRight) ? rounding : 0.0f;
+        const float rounding_br = (rounding_corners & ImGuiCorner_BotRight) ? rounding : 0.0f;
+        const float rounding_bl = (rounding_corners & ImGuiCorner_BotLeft) ? rounding : 0.0f;
+        PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9);
+        PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12);
+        PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3);
+        PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6);
     }
 }
 
@@ -2332,6 +2331,78 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
     draw_list->_VtxCurrentIdx = (unsigned int)draw_list->VtxBuffer.Size;
 }
 
+//-----------------------------------------------------------------------------
+// Internals Drawing Helpers
+//-----------------------------------------------------------------------------
+
+static inline float ImAcos01(float x)
+{
+    if (x <= 0.0f) return IM_PI * 0.5f;
+    if (x >= 1.0f) return 0.0f;
+    return acosf(x);
+    //return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.
+}
+
+// FIXME: Cleanup and move code to ImDrawList.
+void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding)
+{
+    if (x_end_norm == x_start_norm)
+        return;
+    if (x_start_norm > x_end_norm)
+        ImSwap(x_start_norm, x_end_norm);
+
+    ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y);
+    ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y);
+    if (rounding == 0.0f)
+    {
+        draw_list->AddRectFilled(p0, p1, col, 0.0f);
+        return;
+    }
+
+    rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding);
+    const float inv_rounding = 1.0f / rounding;
+    const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding);
+    const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding);
+    const float x0 = ImMax(p0.x, rect.Min.x + rounding);
+    if (arc0_b == arc0_e)
+    {
+        draw_list->PathLineTo(ImVec2(x0, p1.y));
+        draw_list->PathLineTo(ImVec2(x0, p0.y));
+    }
+    else if (arc0_b == 0.0f && arc0_e == IM_PI*0.5f)
+    {
+        draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL
+        draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR
+    }
+    else
+    {
+        draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b, 3); // BL
+        draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e, 3); // TR
+    }
+    if (p1.x > rect.Min.x + rounding)
+    {
+        const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding);
+        const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding);
+        const float x1 = ImMin(p1.x, rect.Max.x - rounding);
+        if (arc1_b == arc1_e)
+        {
+            draw_list->PathLineTo(ImVec2(x1, p0.y));
+            draw_list->PathLineTo(ImVec2(x1, p1.y));
+        }
+        else if (arc1_b == 0.0f && arc1_e == IM_PI*0.5f)
+        {
+            draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR
+            draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3);  // BR
+        }
+        else
+        {
+            draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b, 3); // TR
+            draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e, 3); // BR
+        }
+    }
+    draw_list->PathFillConvex(col);
+}
+
 //-----------------------------------------------------------------------------
 // DEFAULT FONT DATA
 //-----------------------------------------------------------------------------

3rdparty/ocornut-imgui/imgui_internal.h

@@ -138,6 +138,7 @@ static inline int    ImClamp(int v, int mn, int mx)
 static inline float  ImClamp(float v, float mn, float mx)                       { return (v < mn) ? mn : (v > mx) ? mx : v; }
 static inline ImVec2 ImClamp(const ImVec2& f, const ImVec2& mn, ImVec2 mx)      { return ImVec2(ImClamp(f.x,mn.x,mx.x), ImClamp(f.y,mn.y,mx.y)); }
 static inline float  ImSaturate(float f)                                        { return (f < 0.0f) ? 0.0f : (f > 1.0f) ? 1.0f : f; }
+static inline void   ImSwap(float& a, float& b)                                 { float tmp = a; a = b; b = tmp; }
 static inline int    ImLerp(int a, int b, float t)                              { return (int)(a + (b - a) * t); }
 static inline float  ImLerp(float a, float b, float t)                          { return a + (b - a) * t; }
 static inline ImVec2 ImLerp(const ImVec2& a, const ImVec2& b, float t)          { return ImVec2(a.x + (b.x - a.x) * t, a.y + (b.y - a.y) * t); }
@@ -234,8 +235,8 @@ enum ImGuiCorner
 {
     ImGuiCorner_TopLeft     = 1 << 0, // 1
     ImGuiCorner_TopRight    = 1 << 1, // 2
-    ImGuiCorner_BottomRight = 1 << 2, // 4
-    ImGuiCorner_BottomLeft  = 1 << 3, // 8
+    ImGuiCorner_BotRight    = 1 << 2, // 4
+    ImGuiCorner_BotLeft     = 1 << 3, // 8
     ImGuiCorner_All         = 0x0F
 };
 
@@ -537,7 +538,7 @@ struct ImGuiContext
         DragCurrentValue = 0.0f;
         DragLastMouseDelta = ImVec2(0.0f, 0.0f);
         DragSpeedDefaultRatio = 1.0f / 100.0f;
-        DragSpeedScaleSlow = 0.01f;
+        DragSpeedScaleSlow = 1.0f / 100.0f;
         DragSpeedScaleFast = 10.0f;
         ScrollbarClickDeltaToGrabCenter = ImVec2(0.0f, 0.0f);
         TooltipOverrideCount = 0;
@@ -696,9 +697,10 @@ struct IMGUI_API ImGuiWindow
     ImGuiStorage            StateStorage;
     float                   FontWindowScale;                    // Scale multiplier per-window
     ImDrawList*             DrawList;
-    ImGuiWindow*            RootWindow;                         // If we are a child window, this is pointing to the first non-child parent window. Else point to ourself.
-    ImGuiWindow*            RootNonPopupWindow;                 // If we are a child window, this is pointing to the first non-child non-popup parent window. Else point to ourself.
-    ImGuiWindow*            ParentWindow;                       // If we are a child window, this is pointing to our parent window. Else point to NULL.
+    ImGuiWindow*            ParentWindow;                       // Immediate parent in the window stack *regardless* of whether this window is a child window or not)
+    ImGuiWindow*            RootWindow;                         // Generally point to ourself. If we are a child window, this is pointing to the first non-child parent window.
+    ImGuiWindow*            RootNonPopupWindow;                 // Generally point to ourself. Used to display TitleBgActive color and for selecting which window to use for NavWindowing
+
 
     // Navigation / Focus
     int                     FocusIdxAllCounter;                 // Start at -1 and increase as assigned via FocusItemRegister()
@@ -754,7 +756,7 @@ namespace ImGui
     IMGUI_API bool          ItemAdd(const ImRect& bb, const ImGuiID* id);
     IMGUI_API bool          IsClippedEx(const ImRect& bb, const ImGuiID* id, bool clip_even_when_logged);
     IMGUI_API bool          IsHovered(const ImRect& bb, ImGuiID id, bool flatten_childs = false);
-    IMGUI_API bool          FocusableItemRegister(ImGuiWindow* window, bool is_active, bool tab_stop = true);      // Return true if focus is requested
+    IMGUI_API bool          FocusableItemRegister(ImGuiWindow* window, ImGuiID id, bool tab_stop = true);      // Return true if focus is requested
     IMGUI_API void          FocusableItemUnregister(ImGuiWindow* window);
     IMGUI_API ImVec2        CalcItemSize(ImVec2 size, float default_x, float default_y);
     IMGUI_API float         CalcWrapWidthForPos(const ImVec2& pos, float wrap_pos_x);
@@ -762,6 +764,8 @@ namespace ImGui
     IMGUI_API void          OpenPopupEx(ImGuiID id, bool reopen_existing);
     IMGUI_API bool          IsPopupOpen(ImGuiID id);
 
+    IMGUI_API int           CalcTypematicPressedRepeatAmount(float t, float t_prev, float repeat_delay, float repeat_rate);
+
     // New Columns API
     IMGUI_API void          BeginColumns(const char* id, int count, ImGuiColumnsFlags flags = 0); // setup number of columns. use an identifier to distinguish multiple column sets. close with EndColumns().
     IMGUI_API void          EndColumns();                                                         // close columns
@@ -778,6 +782,7 @@ namespace ImGui
     IMGUI_API void          RenderCollapseTriangle(ImVec2 pos, bool is_open, float scale = 1.0f);
     IMGUI_API void          RenderBullet(ImVec2 pos);
     IMGUI_API void          RenderCheckMark(ImVec2 pos, ImU32 col);
+    IMGUI_API void          RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding);
     IMGUI_API const char*   FindRenderedTextEnd(const char* text, const char* text_end = NULL); // Find the optional ## from which we stop displaying text.
 
     IMGUI_API bool          ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags = 0);