Merge branch 'master' into navigation

README.md

@@ -226,14 +226,17 @@ Double-chocolate sponsors:
 - Mobigame
 - Insomniac Games (sponsored the gamepad/keyboard navigation branch)
 - Aras Pranckevičius
+- Lizardcube
+- Greggman
 
 Salty caramel supporters:
-- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko.
+- Jetha Chan, Wild Sheep Studio, Pastagames, Mārtiņš Možeiko, Daniel Collin, Recognition Robotics, Chris Genova, ikrima, Glenn Fiedler, Geoffrey Evans, Dakko Dakko, Mercury Labs, Singularity Demo Group, Mischa Alff, Sebastien Ronsse.
 
 Caramel supporters:
-- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, [Kit framework](http://svkonsult.se/kit), Josh Faust, Martin Donlon, Quinton, Felix.
+- Michel Courtine, César Leblic, Dale Kim, Alex Evans, Rui Figueira, Paul Patrashcu, Jerome Lanquetot, Ctrl Alt Ninja, Paul Fleming, Neil Henning, Stephan Dilly, Neil Blakey-Milner, Aleksei, NeiloGD, Justin Paver, FiniteSol, Vincent Pancaldi, James Billot, Robin Hübner, furrtek, Eric, Simon Barratt, Game Atelier, Julian Bosch, Simon Lundmark, Vincent Hamm, Farhan Wali, Jeff Roberts, Matt Reyer, Colin Riley, Victor Martins, Josh Simmons, Garrett Hoofman, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Kit framework, Josh Faust, Martin Donlon, Quinton, Felix, Andrew Belt, Codecat, Cort Stratton, Claudio Canepa, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Roger Clark, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Miloš Tošić.
 
 And other supporters; thanks!
+(Please contact me or PR if you would like to be added or removed from this list)
 
 License
 -------

TODO.txt

@@ -44,6 +44,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
  - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
  - widgets: add disabled and read-only modes (#211)
+ - widgets: add always-allow-overlap mode.
  - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
  - widgets: activate by identifier (trigger button, focus given id)
 
@@ -98,7 +99,8 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - plot: option/feature: draw unit
  - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
 
- - clipper: ability to force display 1 item in the list would be convenient. 
+ - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
+ - clipper: ability to disable the clipping through a simple flag/bool.
  - clipper: ability to run without knowing full count in advance.
 
  - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
@@ -173,7 +175,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 
 !- style: better default styles.
 !- style: move border to style structure, remove _ShowBorder flag.
- - style: border types: out-screen, in-screen, etc. 
+ - style: border types: out-screen, in-screen, etc. (#447)
  - style/optimization: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding.
  - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
  - style: color-box not always square?
@@ -200,6 +202,8 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - markup: simple markup language for color change?
 
 !- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
+ - font: enforce monospace through ImFontConfig (for icons?)
+ - font: finish CustomRectRegister() to allow mapping unicode codepoint to custom texture data 
  - font: PushFontSize API (#1018)
  - font/atlas: incremental updates
  - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
@@ -232,6 +236,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
  - examples: window minimize, maximize (#583)
  - examples: provide a zero-framerate/idle example.
  - examples: document WantCaptureKeyboard, WantCaptureMouse in example apps. (#446)
+ - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // the problem is that DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
  - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
  - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
  - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)

examples/directx11_example/main.cpp

@@ -60,8 +60,8 @@ HRESULT CreateDeviceD3D(HWND hWnd)
     UINT createDeviceFlags = 0;
     //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
     D3D_FEATURE_LEVEL featureLevel;
-    const D3D_FEATURE_LEVEL featureLevelArray[1] = { D3D_FEATURE_LEVEL_11_0, };
+    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
-    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 1, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
+    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
         return E_FAIL;
 
     CreateRenderTarget();

imgui.cpp

@@ -240,6 +240,7 @@
  Here is a change-log of API breaking changes, if you are using one of the functions listed, expect to have to fix some code.
  Also read releases logs https://github.com/ocornut/imgui/releases for more details.
 
+ - 2017/09/25 (1.52) - removed SetNextWindowPosCenter() because SetNextWindowPos() now has the optional pivot information to do the same and more. Kept redirection function (will obsolete). 
  - 2017/08/25 (1.52) - io.MousePos needs to be set to ImVec2(-FLT_MAX,-FLT_MAX) when mouse is unavailable/missing. Previously ImVec2(-1,-1) was enough but we now accept negative mouse coordinates. In your binding if you need to support unavailable mouse, make sure to replace "io.MousePos = ImVec2(-1,-1)" with "io.MousePos = ImVec2(-FLT_MAX,-FLT_MAX)".
  - 2017/08/22 (1.51) - renamed IsItemHoveredRect() to IsItemRectHovered(). Kept inline redirection function (will obsolete).
                      - renamed IsMouseHoveringAnyWindow() to IsAnyWindowHovered() for consistency. Kept inline redirection function (will obsolete).
@@ -659,10 +660,8 @@ static void             MarkIniSettingsDirty(ImGuiWindow* window);
 
 static ImRect           GetVisibleRect();
 
-static bool             BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags);
 static void             CloseInactivePopups();
 static void             ClosePopupToLevel(int remaining);
-static void             ClosePopup(ImGuiID id);
 static ImGuiWindow*     GetFrontMostModalRootWindow();
 static ImVec2           FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, int* last_dir, const ImRect& rect_to_avoid);
 
@@ -1849,7 +1848,7 @@ ImGuiWindow::ImGuiWindow(const char* name)
     AutoPosLastDirection = -1;
     HiddenFrames = 0;
     SetWindowPosAllowFlags = SetWindowSizeAllowFlags = SetWindowCollapsedAllowFlags = ImGuiCond_Always | ImGuiCond_Once | ImGuiCond_FirstUseEver | ImGuiCond_Appearing;
-    SetWindowPosCenterWanted = false;
+    SetWindowPosVal = SetWindowPosPivot = ImVec2(FLT_MAX, FLT_MAX);
 
     LastFrameActive = -1;
     ItemWidthDefault = 0.0f;
@@ -4261,9 +4260,9 @@ static void ClosePopupToLevel(int remaining)
     g.OpenPopupStack.resize(remaining);
 }
 
-static void ClosePopup(ImGuiID id)
+void ImGui::ClosePopup(ImGuiID id)
 {
-    if (!ImGui::IsPopupOpen(id))
+    if (!IsPopupOpen(id))
         return;
     ImGuiContext& g = *GImGui;
     ClosePopupToLevel(g.OpenPopupStack.Size - 1);
@@ -4289,18 +4288,18 @@ static inline void ClearSetNextWindowData()
     g.SetNextWindowSizeConstraint = g.SetNextWindowFocus = false;
 }
 
-static bool BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
+bool ImGui::BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
 {
     ImGuiContext& g = *GImGui;
     ImGuiWindow* window = g.CurrentWindow;
-    if (!ImGui::IsPopupOpen(id))
+    if (!IsPopupOpen(id))
     {
         ClearSetNextWindowData(); // We behave like Begin() and need to consume those values
         return false;
     }
 
-    ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+    PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
-    ImGuiWindowFlags flags = extra_flags|ImGuiWindowFlags_Popup|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_AlwaysAutoResize;
+    ImGuiWindowFlags flags = extra_flags|ImGuiWindowFlags_Popup|ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoSavedSettings;
 
     char name[20];
     if (flags & ImGuiWindowFlags_ChildMenu)
@@ -4308,11 +4307,11 @@ static bool BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags)
     else
         ImFormatString(name, IM_ARRAYSIZE(name), "##popup_%08x", id); // Not recycling, so we can close/open during the same frame
 
-    bool is_open = ImGui::Begin(name, NULL, flags);
+    bool is_open = Begin(name, NULL, flags);
     if (!(window->Flags & ImGuiWindowFlags_ShowBorders))
         g.CurrentWindow->Flags &= ~ImGuiWindowFlags_ShowBorders;
     if (!is_open) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
-        ImGui::EndPopup();
+        EndPopup();
 
     return is_open;
 }
@@ -4325,7 +4324,7 @@ bool ImGui::BeginPopup(const char* str_id)
         ClearSetNextWindowData(); // We behave like Begin() and need to consume those values
         return false;
     }
-    return BeginPopupEx(g.CurrentWindow->GetID(str_id), ImGuiWindowFlags_ShowBorders);
+    return BeginPopupEx(g.CurrentWindow->GetID(str_id), ImGuiWindowFlags_ShowBorders | ImGuiWindowFlags_AlwaysAutoResize);
 }
 
 bool ImGui::IsPopupOpen(ImGuiID id)
@@ -4351,11 +4350,15 @@ bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags ext
         return false;
     }
 
+    // Center modal windows by default
+    if ((window->SetWindowPosAllowFlags & g.SetNextWindowPosCond) == 0)
+        SetNextWindowPos(g.IO.DisplaySize * 0.5f, ImGuiCond_Appearing, ImVec2(0.5f, 0.5f));
+
     ImGuiWindowFlags flags = extra_flags|ImGuiWindowFlags_Popup|ImGuiWindowFlags_Modal|ImGuiWindowFlags_NoCollapse|ImGuiWindowFlags_NoSavedSettings;
     bool is_open = ImGui::Begin(name, p_open, flags);
     if (!is_open || (p_open && !*p_open)) // NB: is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
     {
-        ImGui::EndPopup();
+        EndPopup();
         if (is_open)
             ClosePopup(id);
         return false;
@@ -4633,7 +4636,7 @@ static ImGuiWindow* CreateNewWindow(const char* name, ImVec2 size, ImGuiWindowFl
     return window;
 }
 
-static void ApplySizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
+static ImVec2 CalcSizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
 {
     ImGuiContext& g = *GImGui;
     if (g.SetNextWindowSizeConstraint)
@@ -4655,7 +4658,32 @@ static void ApplySizeFullWithConstraint(ImGuiWindow* window, ImVec2 new_size)
     }
     if (!(window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_AlwaysAutoResize)))
         new_size = ImMax(new_size, g.Style.WindowMinSize);
-    window->SizeFull = new_size;
+    return new_size;
+}
+
+static ImVec2 CalcSizeAutoFit(ImGuiWindow* window)
+{
+    ImGuiContext& g = *GImGui;
+    ImGuiStyle& style = g.Style;
+    ImGuiWindowFlags flags = window->Flags;
+    ImVec2 size_auto_fit;
+    if ((flags & ImGuiWindowFlags_Tooltip) != 0)
+    {
+        // Tooltip always resize. We keep the spacing symmetric on both axises for aesthetic purpose.
+        size_auto_fit = window->SizeContents + window->WindowPadding - ImVec2(0.0f, style.ItemSpacing.y);
+    }
+    else
+    {
+        // Handling case of auto fit window not fitting on the screen (on either axis): we are growing the size on the other axis to compensate for expected scrollbar. FIXME: Might turn bigger than DisplaySize-WindowPadding.
+        size_auto_fit = ImClamp(window->SizeContents + window->WindowPadding, style.WindowMinSize, ImMax(style.WindowMinSize, g.IO.DisplaySize - g.Style.DisplaySafeAreaPadding));
+        ImVec2 size_auto_fit_after_constraint = CalcSizeFullWithConstraint(window, size_auto_fit);
+        if (size_auto_fit_after_constraint.x < window->SizeContents.x && !(flags & ImGuiWindowFlags_NoScrollbar) && (flags & ImGuiWindowFlags_HorizontalScrollbar))
+            size_auto_fit.y += style.ScrollbarSize;
+        if (size_auto_fit_after_constraint.y < window->SizeContents.y && !(flags & ImGuiWindowFlags_NoScrollbar))
+            size_auto_fit.x += style.ScrollbarSize * 2.0f;
+        size_auto_fit.y = ImMax(size_auto_fit.y - style.ItemSpacing.y, 0.0f);
+    }
+    return size_auto_fit;
 }
 
 static ImVec2 CalcNextScrollFromScrollTargetAndClamp(ImGuiWindow* window)
@@ -4750,9 +4778,12 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         if (window->Appearing) 
             window->SetWindowPosAllowFlags |= ImGuiCond_Appearing;
         window_pos_set_by_api = (window->SetWindowPosAllowFlags & g.SetNextWindowPosCond) != 0;
-        if (window_pos_set_by_api && ImLengthSqr(g.SetNextWindowPosVal - ImVec2(-FLT_MAX,-FLT_MAX)) < 0.001f)
+        if (window_pos_set_by_api && ImLengthSqr(g.SetNextWindowPosPivot) > 0.00001f)
         {
-            window->SetWindowPosCenterWanted = true;                            // May be processed on the next frame if this is our first frame and we are measuring size
+            // May be processed on the next frame if this is our first frame and we are measuring size
+            // FIXME: Look into removing the branch so everything can go through this same code path for consistency.
+            window->SetWindowPosVal = g.SetNextWindowPosVal;
+            window->SetWindowPosPivot = g.SetNextWindowPosPivot;
             window->SetWindowPosAllowFlags &= ~(ImGuiCond_Once | ImGuiCond_FirstUseEver | ImGuiCond_Appearing);
         }
         else
@@ -4874,26 +4905,8 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         // Lock window padding so that altering the ShowBorders flag for children doesn't have side-effects.
         window->WindowPadding = ((flags & ImGuiWindowFlags_ChildWindow) && !(flags & (ImGuiWindowFlags_AlwaysUseWindowPadding | ImGuiWindowFlags_ShowBorders | ImGuiWindowFlags_ComboBox | ImGuiWindowFlags_Popup))) ? ImVec2(0,0) : style.WindowPadding;
 
-        // Calculate auto-fit size
+        // Calculate auto-fit size, handle automatic resize
-        ImVec2 size_auto_fit;
+        const ImVec2 size_auto_fit = CalcSizeAutoFit(window);
-        if ((flags & ImGuiWindowFlags_Tooltip) != 0)
-        {
-            // Tooltip always resize. We keep the spacing symmetric on both axises for aesthetic purpose.
-            size_auto_fit = window->SizeContents + window->WindowPadding - ImVec2(0.0f, style.ItemSpacing.y);
-        }
-        else
-        {
-            size_auto_fit = ImClamp(window->SizeContents + window->WindowPadding, style.WindowMinSize, ImMax(style.WindowMinSize, g.IO.DisplaySize - g.Style.DisplaySafeAreaPadding));
-
-            // Handling case of auto fit window not fitting in screen on one axis, we are growing auto fit size on the other axis to compensate for expected scrollbar. FIXME: Might turn bigger than DisplaySize-WindowPadding.
-            if (size_auto_fit.x < window->SizeContents.x && !(flags & ImGuiWindowFlags_NoScrollbar) && (flags & ImGuiWindowFlags_HorizontalScrollbar))
-                size_auto_fit.y += style.ScrollbarSize;
-            if (size_auto_fit.y < window->SizeContents.y && !(flags & ImGuiWindowFlags_NoScrollbar))
-                size_auto_fit.x += style.ScrollbarSize;
-            size_auto_fit.y = ImMax(size_auto_fit.y - style.ItemSpacing.y, 0.0f);
-        }
-
-        // Handle automatic resize
         if (window->Collapsed)
         {
             // We still process initial auto-fit on collapsed windows to get a window width,
@@ -4903,13 +4916,13 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
             if (window->AutoFitFramesY > 0)
                 window->SizeFull.y = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.y, size_auto_fit.y) : size_auto_fit.y;
         }
-        else
+        else if (!window_size_set_by_api)
         {
-            if ((flags & ImGuiWindowFlags_AlwaysAutoResize) && !window_size_set_by_api)
+            if (flags & ImGuiWindowFlags_AlwaysAutoResize)
             {
                 window->SizeFull = size_auto_fit;
             }
-            else if ((window->AutoFitFramesX > 0 || window->AutoFitFramesY > 0) && !window_size_set_by_api)
+            else if (window->AutoFitFramesX > 0 || window->AutoFitFramesY > 0)
             {
                 // Auto-fit only grows during the first few frames
                 if (window->AutoFitFramesX > 0)
@@ -4921,7 +4934,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
         }
 
         // Apply minimum/maximum window size constraints and final size
-        ApplySizeFullWithConstraint(window, window->SizeFull);
+        window->SizeFull = CalcSizeFullWithConstraint(window, window->SizeFull);
         window->Size = window->Collapsed ? window->TitleBarRect().GetSize() : window->SizeFull;
         
         // POSITION
@@ -4938,13 +4951,11 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
             window->Size = window->SizeFull = size_on_first_use; // NB: argument name 'size_on_first_use' misleading here, it's really just 'size' as provided by user passed via BeginChild()->Begin().
         }
 
-        bool window_pos_center = false;
+        const bool window_pos_with_pivot = (window->SetWindowPosVal.x != FLT_MAX && window->HiddenFrames == 0);
-        window_pos_center |= (window->SetWindowPosCenterWanted && window->HiddenFrames == 0);
+        if (window_pos_with_pivot)
-        window_pos_center |= ((flags & ImGuiWindowFlags_Modal) && !window_pos_set_by_api && window_just_appearing_after_hidden_for_resize);
-        if (window_pos_center)
         {
-            // Center (any sort of window)
+            // Position given a pivot (e.g. for centering)
-            SetWindowPos(window, ImMax(style.DisplaySafeAreaPadding, fullscreen_rect.GetCenter() - window->SizeFull * 0.5f), 0);
+            SetWindowPos(window, ImMax(style.DisplaySafeAreaPadding, window->SetWindowPosVal - window->SizeFull * window->SetWindowPosPivot), 0);
         }
         else if (flags & ImGuiWindowFlags_ChildMenu)
         {
@@ -5073,7 +5084,7 @@ bool ImGui::Begin(const char* name, bool* p_open, const ImVec2& size_on_first_us
 
                 if (size_target.x != FLT_MAX && size_target.y != FLT_MAX)
                 {
-                    ApplySizeFullWithConstraint(window, size_target);
+                    window->SizeFull = CalcSizeFullWithConstraint(window, size_target);
                     MarkIniSettingsDirty(window);
                 }
 
@@ -5846,7 +5857,7 @@ static void SetWindowPos(ImGuiWindow* window, const ImVec2& pos, ImGuiCond cond)
     if (cond && (window->SetWindowPosAllowFlags & cond) == 0)
         return;
     window->SetWindowPosAllowFlags &= ~(ImGuiCond_Once | ImGuiCond_FirstUseEver | ImGuiCond_Appearing);
-    window->SetWindowPosCenterWanted = false;
+    window->SetWindowPosVal = ImVec2(FLT_MAX, FLT_MAX);
 
     // Set
     const ImVec2 old_pos = window->Pos;
@@ -5969,19 +5980,20 @@ void ImGui::SetWindowFocus(const char* name)
     }
 }
 
-void ImGui::SetNextWindowPos(const ImVec2& pos, ImGuiCond cond)
+void ImGui::SetNextWindowPos(const ImVec2& pos, ImGuiCond cond, const ImVec2& pivot)
 {
     ImGuiContext& g = *GImGui;
     g.SetNextWindowPosVal = pos;
+    g.SetNextWindowPosPivot = pivot;
     g.SetNextWindowPosCond = cond ? cond : ImGuiCond_Always;
 }
 
+#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
 void ImGui::SetNextWindowPosCenter(ImGuiCond cond)
 {
-    ImGuiContext& g = *GImGui;
+    SetNextWindowPos(ImGui::GetIO().DisplaySize * 0.5f, cond, ImVec2(0.5f, 0.5f));
-    g.SetNextWindowPosVal = ImVec2(-FLT_MAX, -FLT_MAX);
-    g.SetNextWindowPosCond = cond ? cond : ImGuiCond_Always;
 }
+#endif
 
 void ImGui::SetNextWindowSize(const ImVec2& size, ImGuiCond cond)
 {
@@ -9503,7 +9515,7 @@ bool ImGui::Combo(const char* label, int* current_item, const char* items_separa
     return value_changed;
 }
 
-bool ImGui::BeginCombo(const char* label, const char* preview_value, float popup_opened_height)
+bool ImGui::BeginCombo(const char* label, const char* preview_value, ImVec2 popup_size)
 {
     ImGuiWindow* window = GetCurrentWindow();
     if (window->SkipItems)
@@ -9569,17 +9581,24 @@ bool ImGui::BeginCombo(const char* label, const char* preview_value, float popup
     if (!popup_open)
         return false;
 
+    if (popup_size.x == 0.0f)
+        popup_size.x = w;
+
     float popup_y1 = frame_bb.Max.y;
-    float popup_y2 = ImClamp(popup_y1 + popup_opened_height, popup_y1, g.IO.DisplaySize.y - style.DisplaySafeAreaPadding.y);
+    float popup_y2 = ImClamp(popup_y1 + popup_size.y, popup_y1, g.IO.DisplaySize.y - style.DisplaySafeAreaPadding.y);
-    if ((popup_y2 - popup_y1) < ImMin(popup_opened_height, frame_bb.Min.y - style.DisplaySafeAreaPadding.y))
+    if ((popup_y2 - popup_y1) < ImMin(popup_size.y, frame_bb.Min.y - style.DisplaySafeAreaPadding.y))
     {
         // Position our combo ABOVE because there's more space to fit! (FIXME: Handle in Begin() or use a shared helper. We have similar code in Begin() for popup placement)
-        popup_y1 = ImClamp(frame_bb.Min.y - popup_opened_height, style.DisplaySafeAreaPadding.y, frame_bb.Min.y);
+        popup_y1 = ImClamp(frame_bb.Min.y - popup_size.y, style.DisplaySafeAreaPadding.y, frame_bb.Min.y);
         popup_y2 = frame_bb.Min.y;
+        SetNextWindowPos(ImVec2(frame_bb.Min.x, frame_bb.Min.y), ImGuiCond_Always, ImVec2(0.0f, 1.0f));
     }
-    ImRect popup_rect(ImVec2(frame_bb.Min.x, popup_y1), ImVec2(frame_bb.Max.x, popup_y2));
+    else
-    SetNextWindowPos(popup_rect.Min);
+    {
-    SetNextWindowSize(popup_rect.GetSize());
+        // Position our combo below
+        SetNextWindowPos(ImVec2(frame_bb.Min.x, frame_bb.Max.y), ImGuiCond_Always, ImVec2(0.0f, 0.0f));
+    }
+    SetNextWindowSize(ImVec2(popup_size.x, popup_y2 - popup_y1), ImGuiCond_Appearing);
     PushStyleVar(ImGuiStyleVar_WindowPadding, style.FramePadding);
 
     const ImGuiWindowFlags flags = ImGuiWindowFlags_ComboBox | ((window->Flags & ImGuiWindowFlags_ShowBorders) ? ImGuiWindowFlags_ShowBorders : 0);
@@ -9612,9 +9631,9 @@ bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(voi
     // Size default to hold ~7 items
     if (height_in_items < 0)
         height_in_items = 7;
-    float popup_opened_height = (g.FontSize + style.ItemSpacing.y) * ImMin(items_count, height_in_items) + (style.FramePadding.y * 3);
+    float popup_height = (g.FontSize + style.ItemSpacing.y) * ImMin(items_count, height_in_items) + (style.FramePadding.y * 3);
 
-    if (!BeginCombo(label, preview_text, popup_opened_height))
+    if (!BeginCombo(label, preview_text, ImVec2(0.0f, popup_height)))
         return false;
 
     // Display items
@@ -10057,7 +10076,7 @@ bool ImGui::BeginMenu(const char* label, bool enabled)
     if (menu_is_open)
     {
         SetNextWindowPos(popup_pos, ImGuiCond_Always);
-        ImGuiWindowFlags flags = ImGuiWindowFlags_ShowBorders | ((window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu)) ? ImGuiWindowFlags_ChildMenu|ImGuiWindowFlags_ChildWindow : ImGuiWindowFlags_ChildMenu);
+        ImGuiWindowFlags flags = ImGuiWindowFlags_ShowBorders | ImGuiWindowFlags_AlwaysAutoResize | ((window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu)) ? ImGuiWindowFlags_ChildMenu|ImGuiWindowFlags_ChildWindow : ImGuiWindowFlags_ChildMenu);
         menu_is_open = BeginPopupEx(id, flags); // menu_is_open can be 'false' when the popup is completely clipped (e.g. zero size display)
     }
 
@@ -10245,7 +10264,10 @@ static void ColorEditOptionsPopup(ImGuiColorEditFlags flags, float* col)
         sprintf(buf, "(%d,%d,%d,%d)", cr, cg, cb, ca);
         if (ImGui::Selectable(buf))
             ImGui::SetClipboardText(buf);
-        sprintf(buf, (flags & ImGuiColorEditFlags_NoAlpha) ? "0x%02X%02X%02X" : "0x%02X%02X%02X%02X", cr, cg, cb, ca);
+        if (flags & ImGuiColorEditFlags_NoAlpha)
+            sprintf(buf, "0x%02X%02X%02X", cr, cg, cb);
+        else
+            sprintf(buf, "0x%02X%02X%02X%02X", cr, cg, cb, ca);
         if (ImGui::Selectable(buf))
             ImGui::SetClipboardText(buf);
         ImGui::EndPopup();

imgui.h

@@ -153,8 +153,7 @@ namespace ImGui
     IMGUI_API bool          IsWindowAppearing();
     IMGUI_API void          SetWindowFontScale(float scale);                                    // per-window font scale. Adjust IO.FontGlobalScale if you want to scale all windows
 
-    IMGUI_API void          SetNextWindowPos(const ImVec2& pos, ImGuiCond cond = 0);            // set next window position. call before Begin()
+    IMGUI_API void          SetNextWindowPos(const ImVec2& pos, ImGuiCond cond = 0, const ImVec2& pivot = ImVec2(0,0)); // set next window position. call before Begin(). use pivot=(0.5f,0.5f) to center on given point, etc.
-    IMGUI_API void          SetNextWindowPosCenter(ImGuiCond cond = 0);                         // set next window position to be centered on screen. call before Begin()
     IMGUI_API void          SetNextWindowSize(const ImVec2& size, ImGuiCond cond = 0);          // set next window size. set axis to 0.0f to force an auto-fit on this axis. call before Begin()
     IMGUI_API void          SetNextWindowSizeConstraints(const ImVec2& size_min, const ImVec2& size_max, ImGuiSizeConstraintCallback custom_callback = NULL, void* custom_callback_data = NULL); // set next window size limits. use -1,-1 on either X/Y axis to preserve the current size. Use callback to apply non-trivial programmatic constraints.
     IMGUI_API void          SetNextWindowContentSize(const ImVec2& size);                       // set next window content size (enforce the range of scrollbars). set axis to 0.0f to leave it automatic. call before Begin()
@@ -495,6 +494,7 @@ namespace ImGui
 
     // Obsolete functions (Will be removed! Also see 'API BREAKING CHANGES' section in imgui.cpp)
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
+    static void             SetNextWindowPosCenter(ImGuiCond cond = 0);                        // OBSOLETE 1.52+
     static inline bool      IsItemHoveredRect() { return IsItemRectHovered(); }                // OBSOLETE 1.51+
     static inline bool      IsPosHoveringAnyWindow(const ImVec2&) { IM_ASSERT(0); return false; } // OBSOLETE 1.51+. This was partly broken. You probably wanted to use ImGui::GetIO().WantCaptureMouse instead.
     static inline bool      IsMouseHoveringAnyWindow() { return IsAnyWindowHovered(); }        // OBSOLETE 1.51+

imgui_demo.cpp

@@ -1437,7 +1437,7 @@ void ImGui::ShowTestWindow(bool* p_open)
                 ImGui::OpenPopup("Delete?");
             if (ImGui::BeginPopupModal("Delete?", NULL, ImGuiWindowFlags_AlwaysAutoResize))
             {
-                ImGui::Text("All those beautiful files will be deleted.\nThis operation cannot be undone!\n\n");
+                    ImGui::Text("All those beautiful files will be deleted.\nThis operation cannot be undone!\n\n");
                 ImGui::Separator();
 
                 //static int dummy_i = 0;
@@ -2125,20 +2125,30 @@ static void ShowExampleAppConstrainedResize(bool* p_open)
     ImGui::End();
 }
 
-// Demonstrate creating a simple static window with no decoration.
+// Demonstrate creating a simple static window with no decoration + a context-menu to choose which corner of the screen to use.
 static void ShowExampleAppFixedOverlay(bool* p_open)
 {
-    ImGui::SetNextWindowPos(ImVec2(10,10));
+    const float DISTANCE = 10.0f;
+    static int corner = 0;
+    ImVec2 window_pos = ImVec2((corner & 1) ? ImGui::GetIO().DisplaySize.x - DISTANCE : DISTANCE, (corner & 2) ? ImGui::GetIO().DisplaySize.y - DISTANCE : DISTANCE);
+    ImVec2 window_pos_pivot = ImVec2((corner & 1) ? 1.0f : 0.0f, (corner & 2) ? 1.0f : 0.0f);
+    ImGui::SetNextWindowPos(window_pos, ImGuiCond_Always, window_pos_pivot);
     ImGui::PushStyleColor(ImGuiCol_WindowBg, ImVec4(0.0f, 0.0f, 0.0f, 0.3f));
-    if (!ImGui::Begin("Example: Fixed Overlay", p_open, ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_NoFocusOnAppearing|ImGuiWindowFlags_NoNavFocus|ImGuiWindowFlags_NoNavInputs))
+    if (ImGui::Begin("Example: Fixed Overlay", p_open, ImGuiWindowFlags_NoTitleBar|ImGuiWindowFlags_NoResize|ImGuiWindowFlags_AlwaysAutoResize|ImGuiWindowFlags_NoMove|ImGuiWindowFlags_NoSavedSettings|ImGuiWindowFlags_NoFocusOnAppearing|ImGuiWindowFlags_NoNavFocus|ImGuiWindowFlags_NoNavInputs))
     {
+        ImGui::Text("Simple overlay\nin the corner of the screen.\n(right-click to change position)");
+        ImGui::Separator();
+        ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y);
+        if (ImGui::BeginPopupContextWindow())
+        {
+            if (ImGui::MenuItem("Top-left", NULL, corner == 0)) corner = 0;
+            if (ImGui::MenuItem("Top-right", NULL, corner == 1)) corner = 1;
+            if (ImGui::MenuItem("Bottom-left", NULL, corner == 2)) corner = 2;
+            if (ImGui::MenuItem("Bottom-right", NULL, corner == 3)) corner = 3;
+            ImGui::EndPopup();
+        }
         ImGui::End();
-        return;
     }
-    ImGui::Text("Simple overlay\non the top-left side of the screen.");
-    ImGui::Separator();
-    ImGui::Text("Mouse Position: (%.1f,%.1f)", ImGui::GetIO().MousePos.x, ImGui::GetIO().MousePos.y);
-    ImGui::End();
     ImGui::PopStyleColor();
 }
 

imgui_draw.cpp

@@ -42,6 +42,9 @@
 #if __has_warning("-Wreserved-id-macro")
 #pragma clang diagnostic ignored "-Wreserved-id-macro"      // warning : macro name is a reserved identifier                //
 #endif
+#if __has_warning("-Wdouble-promotion")
+#pragma clang diagnostic ignored "-Wdouble-promotion"       // warning: implicit conversion from 'float' to 'double' when passing argument to function
+#endif
 #elif defined(__GNUC__)
 #pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
 #pragma GCC diagnostic ignored "-Wdouble-promotion"         // warning: implicit conversion from 'float' to 'double' when passing argument to function
@@ -69,7 +72,6 @@ namespace IMGUI_STB_NAMESPACE
 
 #ifdef __clang__
 #pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wold-style-cast"         // warning : use of old-style cast                              // yes, they are more terse.
 #pragma clang diagnostic ignored "-Wunused-function"
 #pragma clang diagnostic ignored "-Wmissing-prototypes"
 #endif

imgui_internal.h

@@ -476,6 +476,7 @@ struct ImGuiContext
 
     // Storage for SetNexWindow** and SetNextTreeNode*** functions
     ImVec2                  SetNextWindowPosVal;
+    ImVec2                  SetNextWindowPosPivot;
     ImVec2                  SetNextWindowSizeVal;
     ImVec2                  SetNextWindowContentSizeVal;
     bool                    SetNextWindowCollapsedVal;
@@ -763,7 +764,8 @@ struct IMGUI_API ImGuiWindow
     ImGuiCond               SetWindowPosAllowFlags;             // store condition flags for next SetWindowPos() call.
     ImGuiCond               SetWindowSizeAllowFlags;            // store condition flags for next SetWindowSize() call.
     ImGuiCond               SetWindowCollapsedAllowFlags;       // store condition flags for next SetWindowCollapsed() call.
-    bool                    SetWindowPosCenterWanted;
+    ImVec2                  SetWindowPosVal;                    // store window position when using a non-zero Pivot (position set needs to be processed when we know the window size)
+    ImVec2                  SetWindowPosPivot;                  // store window pivot for positioning. ImVec2(0,0) when positioning from top-left corner; ImVec2(0.5f,0.5f) for centering; ImVec2(1,1) for bottom right.
 
     ImGuiDrawContext        DC;                                 // Temporary per-window data, reset at the beginning of the frame
     ImVector<ImGuiID>       IDStack;                            // ID stack. ID are hashes seeded with the value at the top of the stack
@@ -845,7 +847,9 @@ namespace ImGui
     IMGUI_API void          PopItemFlag();
 
     IMGUI_API void          OpenPopupEx(ImGuiID id, bool reopen_existing);
+    IMGUI_API void          ClosePopup(ImGuiID id);
     IMGUI_API bool          IsPopupOpen(ImGuiID id);
+    IMGUI_API bool          BeginPopupEx(ImGuiID id, ImGuiWindowFlags extra_flags);
 
     IMGUI_API int           CalcTypematicPressedRepeatAmount(float t, float t_prev, float repeat_delay, float repeat_rate);
 
@@ -855,7 +859,7 @@ namespace ImGui
     IMGUI_API void          PushColumnClipRect(int column_index = -1);
 
     // FIXME-WIP: New Combo API
-    IMGUI_API bool          BeginCombo(const char* label, const char* preview_value, float popup_opened_height);
+    IMGUI_API bool          BeginCombo(const char* label, const char* preview_value, ImVec2 popup_size = ImVec2(0.0f,0.0f));
     IMGUI_API void          EndCombo();
 
     // NB: All position are in absolute pixels coordinates (never using window coordinates internally)