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MultiSelect: added ImGuiSelectionExternalStorage helper. Simplify bool demo.

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ocornut 2024-06-05 19:00:13 +02:00
parent f9caf4447a
commit db4898cb91
3 changed files with 39 additions and 22 deletions
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16
imgui.h
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@ -44,7 +44,7 @@ Index of this file:
// [SECTION] ImGuiIO
// [SECTION] Misc data structures (ImGuiInputTextCallbackData, ImGuiSizeCallbackData, ImGuiPayload)
// [SECTION] Helpers (ImGuiOnceUponAFrame, ImGuiTextFilter, ImGuiTextBuffer, ImGuiStorage, ImGuiListClipper, Math Operators, ImColor)
// [SECTION] Multi-Select API flags and structures (ImGuiMultiSelectFlags, ImGuiMultiSelectIO, ImGuiSelectionRequest, ImGuiSelectionBasicStorage)
// [SECTION] Multi-Select API flags and structures (ImGuiMultiSelectFlags, ImGuiMultiSelectIO, ImGuiSelectionRequest, ImGuiSelectionBasicStorage, ImGuiSelectionExternalStorage)
// [SECTION] Drawing API (ImDrawCallback, ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter, ImDrawFlags, ImDrawListFlags, ImDrawList, ImDrawData)
// [SECTION] Font API (ImFontConfig, ImFontGlyph, ImFontGlyphRangesBuilder, ImFontAtlasFlags, ImFontAtlas, ImFont)
// [SECTION] Viewports (ImGuiViewportFlags, ImGuiViewport)
@ -180,6 +180,7 @@ struct ImGuiOnceUponAFrame; // Helper for running a block of code not mo
struct ImGuiPayload; // User data payload for drag and drop operations
struct ImGuiPlatformImeData; // Platform IME data for io.PlatformSetImeDataFn() function.
struct ImGuiSelectionBasicStorage; // Optional helper to store multi-selection state + apply multi-selection requests.
struct ImGuiSelectionExternalStorage;//Optional helper to apply multi-selection requests to existing randomly accessible storage.
struct ImGuiSelectionRequest; // A selection request (stored in ImGuiMultiSelectIO)
struct ImGuiSizeCallbackData; // Callback data when using SetNextWindowSizeConstraints() (rare/advanced use)
struct ImGuiStorage; // Helper for key->value storage (container sorted by key)
@ -2860,6 +2861,19 @@ struct ImGuiSelectionBasicStorage
ImGuiID GetStorageIdFromIndex(int idx) { return AdapterIndexToStorageId(this, idx); }
};
// Optional helper to apply multi-selection requests to existing randomly accessible storage.
// Convenient if you want to quickly wire multi-select API on e.g. an array of bool or items storing their own selection state.
struct ImGuiSelectionExternalStorage
{
// Members
void (*AdapterSetItemSelected)(ImGuiSelectionExternalStorage* self, int idx, bool selected); // e.g. AdapterSetItemSelected = [](ImGuiSelectionExternalStorage* self, int idx, bool selected) { ((MyItems**)self->UserData)[idx]->Selected = selected; }
void* UserData; // User data for use by adapter function // e.g. selection.UserData = (void*)my_items;
// Methods
ImGuiSelectionExternalStorage() { memset(this, 0, sizeof(*this)); }
IMGUI_API void ApplyRequests(ImGuiMultiSelectIO* ms_io); // Generic function, using AdapterSetItemSelected()
};
//-----------------------------------------------------------------------------
// [SECTION] Drawing API (ImDrawCmd, ImDrawIdx, ImDrawVert, ImDrawChannel, ImDrawListSplitter, ImDrawListFlags, ImDrawList, ImDrawData)
// Hold a series of drawing commands. The user provides a renderer for ImDrawData which essentially contains an array of ImDrawList.