Updated ImGui.

3rdparty/ocornut-imgui/imgui.cpp

@@ -661,7 +661,7 @@ static ImRect           GetVisibleRect();
 static void             CloseInactivePopups(ImGuiWindow* ref_window);
 static void             ClosePopupToLevel(int remaining);
 static ImGuiWindow*     GetFrontMostModalRootWindow();
-static ImVec2           FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, int* last_dir, const ImRect& rect_to_avoid);
+static ImVec2           FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& rect_to_avoid);
 
 static bool             InputTextFilterCharacter(unsigned int* p_char, ImGuiInputTextFlags flags, ImGuiTextEditCallback callback, void* user_data);
 static int              InputTextCalcTextLenAndLineCount(const char* text_begin, const char** out_text_end);
@@ -1850,7 +1850,7 @@ ImGuiWindow::ImGuiWindow(const char* name)
     AutoFitFramesX = AutoFitFramesY = -1;
     AutoFitOnlyGrows = false;
     AutoFitChildAxises = 0x00;
-    AutoPosLastDirection = -1;
+    AutoPosLastDirection = ImGuiDir_None;
     HiddenFrames = 0;
     SetWindowPosAllowFlags = SetWindowSizeAllowFlags = SetWindowCollapsedAllowFlags = ImGuiCond_Always | ImGuiCond_Once | ImGuiCond_FirstUseEver | ImGuiCond_Appearing;
     SetWindowPosVal = SetWindowPosPivot = ImVec2(FLT_MAX, FLT_MAX);
@@ -2238,6 +2238,11 @@ int ImGui::GetFrameCount()
     return GImGui->FrameCount;
 }
 
+ImDrawList* ImGui::GetOverlayDrawList()
+{
+    return &GImGui->OverlayDrawList;
+}
+
 void ImGui::NewFrame()
 {
     ImGuiContext& g = *GImGui;
@@ -4017,28 +4022,39 @@ static void CheckStacksSize(ImGuiWindow* window, bool write)
     IM_ASSERT(p_backup == window->DC.StackSizesBackup + IM_ARRAYSIZE(window->DC.StackSizesBackup));
 }
 
-static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, int* last_dir, const ImRect& r_inner)
+static ImVec2 FindBestPopupWindowPos(const ImVec2& base_pos, const ImVec2& size, ImGuiDir* last_dir, const ImRect& r_avoid)
 {
     const ImGuiStyle& style = GImGui->Style;
 
-    // Clamp into visible area while not overlapping the cursor. Safety padding is optional if our popup size won't fit without it.
+    // r_avoid = the rectangle to avoid (e.g. for tooltip it is a rectangle around the mouse cursor which we want to avoid. for popups it's a small point around the cursor.)
+    // r_outer = the visible area rectangle, minus safe area padding. If our popup size won't fit because of safe area padding we ignore it.
     ImVec2 safe_padding = style.DisplaySafeAreaPadding;
     ImRect r_outer(GetVisibleRect());
     r_outer.Expand(ImVec2((size.x - r_outer.GetWidth() > safe_padding.x*2) ? -safe_padding.x : 0.0f, (size.y - r_outer.GetHeight() > safe_padding.y*2) ? -safe_padding.y : 0.0f));
     ImVec2 base_pos_clamped = ImClamp(base_pos, r_outer.Min, r_outer.Max - size);
+    //GImGui->OverlayDrawList.AddRect(r_avoid.Min, r_avoid.Max, IM_COL32(255,0,0,255));
+    //GImGui->OverlayDrawList.AddRect(r_outer.Min, r_outer.Max, IM_COL32(0,255,0,255));
 
-    for (int n = (*last_dir != -1) ? -1 : 0; n < 4; n++)   // Last, Right, down, up, left. (Favor last used direction).
+    const ImGuiDir dir_prefered_order[ImGuiDir_Count_] = { ImGuiDir_Right, ImGuiDir_Down, ImGuiDir_Up, ImGuiDir_Left };
+    for (int n = (*last_dir != ImGuiDir_None) ? -1 : 0; n < ImGuiDir_Count_; n++)
     {
-        const int dir = (n == -1) ? *last_dir : n;
-        ImRect rect(dir == 0 ? r_inner.Max.x : r_outer.Min.x, dir == 1 ? r_inner.Max.y : r_outer.Min.y, dir == 3 ? r_inner.Min.x : r_outer.Max.x, dir == 2 ? r_inner.Min.y : r_outer.Max.y);
-        if (rect.GetWidth() < size.x || rect.GetHeight() < size.y)
+        const ImGuiDir dir = (n == -1) ? *last_dir : dir_prefered_order[n];
+        float avail_w = (dir == ImGuiDir_Left ? r_avoid.Min.x : r_outer.Max.x) - (dir == ImGuiDir_Right ? r_avoid.Max.x : r_outer.Min.x);
+        if (avail_w < size.x)
             continue;
+        float avail_h = (dir == ImGuiDir_Up ? r_avoid.Min.y : r_outer.Max.y) - (dir == ImGuiDir_Down ? r_avoid.Max.y : r_outer.Min.y);
+        if (avail_h < size.y)
+            continue;
+
+        ImVec2 pos;
+        pos.x = (dir == ImGuiDir_Left) ? r_avoid.Min.x - size.x : (dir == ImGuiDir_Right) ? r_avoid.Max.x : base_pos_clamped.x;
+        pos.y = (dir == ImGuiDir_Up)   ? r_avoid.Min.y - size.y : (dir == ImGuiDir_Down)  ? r_avoid.Max.y : base_pos_clamped.y;
         *last_dir = dir;
-        return ImVec2(dir == 0 ? r_inner.Max.x : dir == 3 ? r_inner.Min.x - size.x : base_pos_clamped.x, dir == 1 ? r_inner.Max.y : dir == 2 ? r_inner.Min.y - size.y : base_pos_clamped.y);
+        return pos;
     }
 
     // Fallback, try to keep within display
-    *last_dir = -1;
+    *last_dir = ImGuiDir_None;
     ImVec2 pos = base_pos;
     pos.x = ImMax(ImMin(pos.x + size.x, r_outer.Max.x) - size.x, r_outer.Min.x);
     pos.y = ImMax(ImMin(pos.y + size.y, r_outer.Max.y) - size.y, r_outer.Min.y);
@@ -4382,7 +4398,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         if (window_just_activated_by_user)
         {
             // Popup first latch mouse position, will position itself when it appears next frame
-            window->AutoPosLastDirection = -1;
+            window->AutoPosLastDirection = ImGuiDir_None;
             if ((flags & ImGuiWindowFlags_Popup) != 0 && !window_pos_set_by_api)
                 window->PosFloat = g.IO.MousePos;
         }
@@ -4436,28 +4452,29 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
 
         // Calculate auto-fit size, handle automatic resize
         const ImVec2 size_auto_fit = CalcSizeAutoFit(window);
+        ImVec2 size_for_scrollbars_visibility = window->SizeFullAtLastBegin;
         if (window->Collapsed)
         {
             // We still process initial auto-fit on collapsed windows to get a window width,
             // But otherwise we don't honor ImGuiWindowFlags_AlwaysAutoResize when collapsed.
             if (window->AutoFitFramesX > 0)
-                window->SizeFull.x = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.x, size_auto_fit.x) : size_auto_fit.x;
+                window->SizeFull.x = size_for_scrollbars_visibility.x = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.x, size_auto_fit.x) : size_auto_fit.x;
             if (window->AutoFitFramesY > 0)
-                window->SizeFull.y = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.y, size_auto_fit.y) : size_auto_fit.y;
+                window->SizeFull.y = size_for_scrollbars_visibility.y = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.y, size_auto_fit.y) : size_auto_fit.y;
         }
         else if (!window_size_set_by_api)
         {
             if (flags & ImGuiWindowFlags_AlwaysAutoResize)
             {
-                window->SizeFull = size_auto_fit;
+                window->SizeFull = size_for_scrollbars_visibility = size_auto_fit;
             }
             else if (window->AutoFitFramesX > 0 || window->AutoFitFramesY > 0)
             {
                 // Auto-fit only grows during the first few frames
                 if (window->AutoFitFramesX > 0)
-                    window->SizeFull.x = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.x, size_auto_fit.x) : size_auto_fit.x;
+                    window->SizeFull.x = size_for_scrollbars_visibility.x = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.x, size_auto_fit.x) : size_auto_fit.x;
                 if (window->AutoFitFramesY > 0)
-                    window->SizeFull.y = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.y, size_auto_fit.y) : size_auto_fit.y;
+                    window->SizeFull.y = size_for_scrollbars_visibility.y = window->AutoFitOnlyGrows ? ImMax(window->SizeFull.y, size_auto_fit.y) : size_auto_fit.y;
                 MarkIniSettingsDirty(window);
             }
         }
@@ -4476,10 +4493,10 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         // Update scrollbar status (based on the Size that was effective during last frame or the auto-resized Size). 
         if (!window->Collapsed)
         {
-            window->ScrollbarY = (flags & ImGuiWindowFlags_AlwaysVerticalScrollbar) || ((window->SizeContents.y > window->SizeFullAtLastBegin.y) && !(flags & ImGuiWindowFlags_NoScrollbar));
-            window->ScrollbarX = (flags & ImGuiWindowFlags_AlwaysHorizontalScrollbar) || ((window->SizeContents.x > window->SizeFullAtLastBegin.x - (window->ScrollbarY ? style.ScrollbarSize : 0.0f) - window->WindowPadding.x) && !(flags & ImGuiWindowFlags_NoScrollbar) && (flags & ImGuiWindowFlags_HorizontalScrollbar));
+            window->ScrollbarY = (flags & ImGuiWindowFlags_AlwaysVerticalScrollbar) || ((window->SizeContents.y > size_for_scrollbars_visibility.y) && !(flags & ImGuiWindowFlags_NoScrollbar));
+            window->ScrollbarX = (flags & ImGuiWindowFlags_AlwaysHorizontalScrollbar) || ((window->SizeContents.x > size_for_scrollbars_visibility.x - (window->ScrollbarY ? style.ScrollbarSize : 0.0f) - window->WindowPadding.x) && !(flags & ImGuiWindowFlags_NoScrollbar) && (flags & ImGuiWindowFlags_HorizontalScrollbar));
             if (window->ScrollbarX && !window->ScrollbarY)
-                window->ScrollbarY = (window->SizeContents.y > window->SizeFullAtLastBegin.y + style.ScrollbarSize) && !(flags & ImGuiWindowFlags_NoScrollbar);
+                window->ScrollbarY = (window->SizeContents.y > size_for_scrollbars_visibility.y + style.ScrollbarSize) && !(flags & ImGuiWindowFlags_NoScrollbar);
             window->ScrollbarSizes = ImVec2(window->ScrollbarY ? style.ScrollbarSize : 0.0f, window->ScrollbarX ? style.ScrollbarSize : 0.0f);
         }
 
@@ -4523,9 +4540,9 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
         if ((flags & ImGuiWindowFlags_Tooltip) != 0 && !window_pos_set_by_api)
         {
             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?
+            ImRect rect_to_avoid(ref_pos.x - 16, ref_pos.y - 8, ref_pos.x + 24, ref_pos.y + 24); // FIXME: Completely hard-coded. Store boxes in mouse cursor data? Scale? Center on cursor hit-point?
             window->PosFloat = FindBestPopupWindowPos(ref_pos, window->Size, &window->AutoPosLastDirection, rect_to_avoid);
-            if (window->AutoPosLastDirection == -1)
+            if (window->AutoPosLastDirection == ImGuiDir_None)
                 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.
         }
 
@@ -4603,7 +4620,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
                     ImRect resize_rect(corner, corner + grip.InnerDir * grip_hover_size);
                     resize_rect.FixInverted();
                     bool hovered, held;
-                    ButtonBehavior(resize_rect, window->GetID((void*)intptr_t(resize_grip_n)), &hovered, &held, ImGuiButtonFlags_FlattenChilds);
+                    ButtonBehavior(resize_rect, window->GetID((void*)(intptr_t)resize_grip_n), &hovered, &held, ImGuiButtonFlags_FlattenChilds);
                     if (hovered || held)
                         g.MouseCursor = (resize_grip_n & 1) ? ImGuiMouseCursor_ResizeNESW : ImGuiMouseCursor_ResizeNWSE;
 
@@ -4629,7 +4646,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
                     const float BORDER_APPEAR_TIMER = 0.05f; // Reduce visual noise
                     bool hovered, held;
                     ImRect border_rect = GetBorderRect(window, border_n, grip_hover_size, BORDER_SIZE);
-                    ButtonBehavior(border_rect, window->GetID((void*)intptr_t(border_n+4)), &hovered, &held, ImGuiButtonFlags_FlattenChilds);
+                    ButtonBehavior(border_rect, window->GetID((void*)(intptr_t)(border_n+4)), &hovered, &held, ImGuiButtonFlags_FlattenChilds);
                     if ((hovered && g.HoveredIdTimer > BORDER_APPEAR_TIMER) || held)
                     {
                         g.MouseCursor = (border_n & 1) ? ImGuiMouseCursor_ResizeEW : ImGuiMouseCursor_ResizeNS;

3rdparty/ocornut-imgui/imgui.h

@@ -441,6 +441,7 @@ namespace ImGui
     IMGUI_API bool          IsRectVisible(const ImVec2& rect_min, const ImVec2& rect_max);      // test if rectangle (in screen space) is visible / not clipped. to perform coarse clipping on user's side.
     IMGUI_API float         GetTime();
     IMGUI_API int           GetFrameCount();
+    IMGUI_API ImDrawList*   GetOverlayDrawList();                                               // this draw list will be the last rendered one, useful to quickly draw overlays shapes/text
     IMGUI_API const char*   GetStyleColorName(ImGuiCol idx);
     IMGUI_API ImVec2        CalcItemRectClosestPoint(const ImVec2& pos, bool on_edge = false, float outward = +0.0f);   // utility to find the closest point the last item bounding rectangle edge. useful to visually link items
     IMGUI_API ImVec2        CalcTextSize(const char* text, const char* text_end = NULL, bool hide_text_after_double_hash = false, float wrap_width = -1.0f);
@@ -738,7 +739,7 @@ enum ImGuiMouseCursor_
     ImGuiMouseCursor_Move,              // Unused
     ImGuiMouseCursor_ResizeNS,          // Unused
     ImGuiMouseCursor_ResizeEW,          // When hovering over a column
-    ImGuiMouseCursor_ResizeNESW,        // Unused
+    ImGuiMouseCursor_ResizeNESW,        // When hovering over the bottom-left corner of a window
     ImGuiMouseCursor_ResizeNWSE,        // When hovering over the bottom-right corner of a window
     ImGuiMouseCursor_Count_
 };

3rdparty/ocornut-imgui/imgui_demo.cpp

@@ -1810,6 +1810,8 @@ void ImGui::ShowTestWindow(bool* p_open)
         if (ImGui::TreeNode("Dragging"))
         {
             ImGui::TextWrapped("You can use ImGui::GetMouseDragDelta(0) to query for the dragged amount on any widget.");
+            for (int button = 0; button < 3; button++)
+                ImGui::Text("IsMouseDragging(%d) = %d", button, ImGui::IsMouseDragging(button));
             ImGui::Button("Drag Me");
             if (ImGui::IsItemActive())
             {
@@ -1828,12 +1830,16 @@ void ImGui::ShowTestWindow(bool* p_open)
 
         if (ImGui::TreeNode("Mouse cursors"))
         {
+            const char* mouse_cursors_names[] = { "Arrow", "TextInput", "Move", "ResizeNS", "ResizeEW", "ResizeNESW", "ResizeNWSE" };
+            IM_ASSERT(IM_ARRAYSIZE(mouse_cursors_names) == ImGuiMouseCursor_Count_);
+
+            ImGui::Text("Current mouse cursor = %d: %s", ImGui::GetMouseCursor(), mouse_cursors_names[ImGui::GetMouseCursor()]);
             ImGui::Text("Hover to see mouse cursors:");
             ImGui::SameLine(); ShowHelpMarker("Your application can render a different mouse cursor based on what ImGui::GetMouseCursor() returns. If software cursor rendering (io.MouseDrawCursor) is set ImGui will draw the right cursor for you, otherwise your backend needs to handle it.");
             for (int i = 0; i < ImGuiMouseCursor_Count_; i++)
             {
                 char label[32];
-                sprintf(label, "Mouse cursor %d", i);
+                sprintf(label, "Mouse cursor %d: %s", i, mouse_cursors_names[i]);
                 ImGui::Bullet(); ImGui::Selectable(label, false);
                 if (ImGui::IsItemHovered())
                     ImGui::SetMouseCursor(i);

3rdparty/ocornut-imgui/imgui_internal.h

@@ -248,7 +248,8 @@ enum ImGuiDir
     ImGuiDir_Left    = 0,
     ImGuiDir_Right   = 1,
     ImGuiDir_Up      = 2,
-    ImGuiDir_Down    = 3
+    ImGuiDir_Down    = 3,
+    ImGuiDir_Count_
 };
 
 // 2D axis aligned bounding-box
@@ -726,7 +727,7 @@ struct IMGUI_API ImGuiWindow
     int                     AutoFitFramesX, AutoFitFramesY;
     bool                    AutoFitOnlyGrows;
     int                     AutoFitChildAxises;
-    int                     AutoPosLastDirection;
+    ImGuiDir                AutoPosLastDirection;
     int                     HiddenFrames;
     ImGuiCond               SetWindowPosAllowFlags;             // store condition flags for next SetWindowPos() call.
     ImGuiCond               SetWindowSizeAllowFlags;            // store condition flags for next SetWindowSize() call.