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Reorganized context handling to be more explicit,

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- YOU NOW NEED TO CALL ImGui::CreateContext() AT THE BEGINNING OF YOUR APP, AND CALL ImGui::DestroyContext() AT THE END.
- removed Shutdown() function, as DestroyContext() serve this purpose.
- you may pass a ImFontAtlas* pointer to CreateContext() to share a font atlas between contexts. Otherwhise CreateContext() will create its own font atlas instance.
- removed allocator parameters from CreateContext(), they are now setup with SetAllocatorFunctions(), and shared by all contexts.
- removed the default global context and font atlas instance, which were confusing for users of DLL reloading and users of multiple contexts
(#1565, #586, #992, #1007, #1558)
This commit is contained in:
omar
2018-01-21 19:58:32 +01:00
parent 7e4d28a49d
commit 5e2aa6185c
3 changed files with 49 additions and 34 deletions
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8
imgui_internal.h
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@ -497,6 +497,7 @@ struct ImGuiNextWindowData
struct ImGuiContext
{
bool Initialized;
bool FontAtlasOwnedByContext; // Io.Fonts-> is owned by the ImGuiContext and will be destructed along with it.
ImGuiIO IO;
ImGuiStyle Style;
ImFont* Font; // (Shortcut) == FontStack.empty() ? IO.Font : FontStack.back()
@ -598,11 +599,13 @@ struct ImGuiContext
int WantTextInputNextFrame;
char TempBuffer[1024*3+1]; // temporary text buffer
ImGuiContext() : OverlayDrawList(NULL)
ImGuiContext(ImFontAtlas* shared_font_atlas) : OverlayDrawList(NULL)
{
Initialized = false;
Font = NULL;
FontSize = FontBaseSize = 0.0f;
FontAtlasOwnedByContext = shared_font_atlas ? false : true;
IO.Fonts = shared_font_atlas ? shared_font_atlas : IM_NEW(ImFontAtlas)();
Time = 0.0f;
FrameCount = 0;
@ -864,7 +867,8 @@ namespace ImGui
IMGUI_API void BringWindowToBack(ImGuiWindow* window);
IMGUI_API bool IsWindowChildOf(ImGuiWindow* window, ImGuiWindow* potential_parent);
IMGUI_API void Initialize();
IMGUI_API void Initialize(ImGuiContext* context);
IMGUI_API void Shutdown(ImGuiContext* context); // Since 1.54 this is a _private_ function. You can call DestroyContext() to destroy the context created by CreateContext().
IMGUI_API void MarkIniSettingsDirty();
IMGUI_API ImGuiSettingsHandler* FindSettingsHandler(const char* type_name);