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InputText: fixed an infinite loop error happening if a custom input text callback modifies/clear BufTextLen before calling InsertChars(). (#8994, #3237)

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+ misc comments.
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ocornut
2025-10-08 19:00:34 +02:00
parent bee2720faa
commit 2b770a029b
4 changed files with 12 additions and 5 deletions
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5
docs/CHANGELOG.txt
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@@ -64,6 +64,11 @@ Other Changes:
The grip is not visible before hovering to reduce clutter.
- InputText: fixed single-line InputText() not applying fine character clipping
properly (regression in 1.92.3). (#8967) [@Cyphall]
- InputText: fixed an infinite loop error happening if a custom input text
callback modifies/clear BufTextLen before calling InsertChars().
(regression from 1.92.3). Note that this never really worked correctly, but
previously it would only temporary wreck cursor position, and since 1.92.3 it
would go in an infinite loop. (#8994, #3237)
- Style: added ImGuiCol_UnsavedMarker, color of the unsaved document marker when
using ImGuiWindowFlags_UnsavedDocument/ImGuiTabItemFlags_UnsavedDocument. (#8983)
- IO: added ImGuiPlatformIO::ClearPlatformHandlers(), ClearRendererHandlers()

2
imgui_demo.cpp
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@@ -4804,7 +4804,7 @@ static void DemoWindowLayout()
ImGui::SameLine();
scroll_to_off |= ImGui::Button("Scroll Offset");
bool scroll_to_pos = ImGui::DragFloat("##pos", &scroll_to_pos_px, 1.00f, -10, FLT_MAX, "X/Y = %.0f px");;
bool scroll_to_pos = ImGui::DragFloat("##pos", &scroll_to_pos_px, 1.00f, -10, FLT_MAX, "X/Y = %.0f px");
ImGui::SameLine();
scroll_to_pos |= ImGui::Button("Scroll To Pos");
ImGui::PopItemWidth();

2
imgui_internal.h
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@@ -2484,7 +2484,7 @@ struct ImGuiContext
ImGuiWindow* LogWindow;
ImFileHandle LogFile; // If != NULL log to stdout/ file
ImGuiTextBuffer LogBuffer; // Accumulation buffer when log to clipboard. This is pointer so our GImGui static constructor doesn't call heap allocators.
const char* LogNextPrefix;
const char* LogNextPrefix; // See comment in LogSetNextTextDecoration(): doesn't copy underlying data, use carefully!
const char* LogNextSuffix;
float LogLinePosY;
bool LogLineFirstItem;

8
imgui_widgets.cpp
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@@ -3941,6 +3941,7 @@ static ImVec2 InputTextCalcTextSize(ImGuiContext* ctx, const char* text_begin, c
{
ImGuiContext& g = *ctx;
ImGuiInputTextState* obj = &g.InputTextState;
IM_ASSERT(text_end_display >= text_begin && text_end_display <= text_end);
return ImFontCalcTextSizeEx(g.Font, g.FontSize, FLT_MAX, obj->WrapWidth, text_begin, text_end_display, text_end, out_remaining, out_offset, flags);
}
@@ -4321,11 +4322,12 @@ void ImGuiInputTextCallbackData::InsertChars(int pos, const char* new_text, cons
memcpy(Buf + pos, new_text, (size_t)new_text_len * sizeof(char));
Buf[BufTextLen + new_text_len] = '\0';
if (CursorPos >= pos)
CursorPos += new_text_len;
SelectionStart = SelectionEnd = CursorPos;
BufDirty = true;
BufTextLen += new_text_len;
if (CursorPos >= pos)
CursorPos += new_text_len;
CursorPos = ImClamp(CursorPos, 0, BufTextLen);
SelectionStart = SelectionEnd = CursorPos;
}
void ImGui::PushPasswordFont()