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InputText: CharFilter callback event sets CursorPos/SelectionStart/SelectionEnd. (#816)

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ocornut
2026-04-09 14:52:49 +02:00
parent 11de9df44c
commit f4ed421a88
4 changed files with 8 additions and 5 deletions
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1
docs/CHANGELOG.txt
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@@ -47,6 +47,7 @@ Other Changes:
- InputTextMultiline: fixed an issue processing deactivation logic when an active
multi-line edit is clipped due to being out of view.
- Fixed a crash when toggling ReadOnly while active. (#9354)
- CharFilter callback event sets CursorPos/SelectionStart/SelectionEnd. (#816)
- Tables:
- Fixed issues reporting ideal size to parent window/container: (#9352, #7651)
- When both scrollbars are visible but only one of ScrollX/ScrollY was explicitly requested.

1
docs/TODO.txt
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@@ -63,7 +63,6 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
- input text: preserve scrolling when unfocused?
- input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
- input text: expose CursorPos in char filter event (#816)
- input text: try usage idiom of using InputText with data only exposed through get/set accessors, without extraneous copy/alloc. (#3009)
- input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return nullptr if not active (available in internals)
- input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)

8
imgui.h
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@@ -2642,7 +2642,7 @@ struct ImGuiInputTextCallbackData
ImGuiInputTextFlags EventFlag; // One ImGuiInputTextFlags_Callback* // Read-only
ImGuiInputTextFlags Flags; // What user passed to InputText() // Read-only
void* UserData; // What user passed to InputText() // Read-only
ImGuiID ID; // Widget ID // Read-only
ImGuiID ID; // Widget ID // Read-only
// Arguments for the different callback events
// - During Resize callback, Buf will be same as your input buffer.
@@ -2656,9 +2656,9 @@ struct ImGuiInputTextCallbackData
char* Buf; // Text buffer // Read-write // [Resize] Can replace pointer / [Completion,History,Always] Only write to pointed data, don't replace the actual pointer!
int BufTextLen; // Text length (in bytes) // Read-write // [Resize,Completion,History,Always] Exclude zero-terminator storage. In C land: == strlen(some_text), in C++ land: string.length()
int BufSize; // Buffer size (in bytes) = capacity+1 // Read-only // [Resize,Completion,History,Always] Include zero-terminator storage. In C land: == ARRAYSIZE(my_char_array), in C++ land: string.capacity()+1
int CursorPos; // // Read-write // [Completion,History,Always]
int SelectionStart; // // Read-write // [Completion,History,Always] == to SelectionEnd when no selection
int SelectionEnd; // // Read-write // [Completion,History,Always]
int CursorPos; // // Read-write // [Completion,History,Always,CharFilter]
int SelectionStart; // // Read-write // [Completion,History,Always,CharFilter] == to SelectionEnd when no selection
int SelectionEnd; // // Read-write // [Completion,History,Always,CharFilter]
// Helper functions for text manipulation.
// Use those function to benefit from the CallbackResize behaviors. Calling those function reset the selection.

3
imgui_widgets.cpp
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@@ -4521,6 +4521,9 @@ static bool InputTextFilterCharacter(ImGuiContext* ctx, ImGuiInputTextState* sta
callback_data.EventFlag = ImGuiInputTextFlags_CallbackCharFilter;
callback_data.EventChar = (ImWchar)c;
callback_data.EventActivated = (g.ActiveId == state->ID && g.ActiveIdIsJustActivated);
callback_data.CursorPos = state->Stb->cursor;
callback_data.SelectionStart = state->Stb->select_start;
callback_data.SelectionEnd = state->Stb->select_end;
callback_data.UserData = user_data;
if (callback(&callback_data) != 0)
return false;