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Added a mechanism to compact/free the larger allocations of unused windows (buffers are compacted when a window is unused for 60 seconds, as per io.ConfigWindowsMemoryCompactTimer = 60.0f). Note that memory usage has never been reported as a problem, so this is merely a touch of overzealous luxury. (#2636)

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This commit is contained in:
omar
2019-06-30 12:48:19 +02:00
parent 45a0db5979
commit 62f75c7fb1
5 changed files with 63 additions and 2 deletions
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9
imgui_internal.h
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@ -1321,8 +1321,8 @@ struct IMGUI_API ImGuiWindow
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.
ImVector<ImGuiID> IDStack; // ID stack. ID are hashes seeded with the value at the top of the stack. (In theory this should be in the TempData structure)
ImGuiWindowTempData DC; // Temporary per-window data, reset at the beginning of the frame. This used to be called ImGuiDrawContext, hence the "DC" variable name.
ImVector<ImGuiID> IDStack; // ID stack. ID are hashes seeded with the value at the top of the stack
// The best way to understand what those rectangles are is to use the 'Metrics -> Tools -> Show windows rectangles' viewer.
// The main 'OuterRect', omitted as a field, is window->Rect().
@ -1334,6 +1334,7 @@ struct IMGUI_API ImGuiWindow
ImRect ContentsRegionRect; // FIXME: This is currently confusing/misleading. It is essentially WorkRect but not handling of scrolling. We currently rely on it as right/bottom aligned sizing operation need some size to rely on.
int LastFrameActive; // Last frame number the window was Active.
float LastTimeActive;
float ItemWidthDefault;
ImGuiMenuColumns MenuColumns; // Simplified columns storage for menu items
ImGuiStorage StateStorage;
@ -1352,6 +1353,10 @@ struct IMGUI_API ImGuiWindow
ImGuiID NavLastIds[ImGuiNavLayer_COUNT]; // Last known NavId for this window, per layer (0/1)
ImRect NavRectRel[ImGuiNavLayer_COUNT]; // Reference rectangle, in window relative space
bool MemoryCompacted;
int MemoryDrawListIdxCapacity;
int MemoryDrawListVtxCapacity;
public:
ImGuiWindow(ImGuiContext* context, const char* name);
~ImGuiWindow();
@ -1483,6 +1488,8 @@ namespace ImGui
IMGUI_API void SetWindowPos(ImGuiWindow* window, const ImVec2& pos, ImGuiCond cond = 0);
IMGUI_API void SetWindowSize(ImGuiWindow* window, const ImVec2& size, ImGuiCond cond = 0);
IMGUI_API void SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond = 0);
IMGUI_API void GcCompactTransientWindowBuffers(ImGuiWindow* window);
IMGUI_API void GcAwakeTransientWindowBuffers(ImGuiWindow* window);
IMGUI_API void SetCurrentFont(ImFont* font);
inline ImFont* GetDefaultFont() { ImGuiContext& g = *GImGui; return g.IO.FontDefault ? g.IO.FontDefault : g.IO.Fonts->Fonts[0]; }