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InputText: using CurLenA instead of TextA.Size for correctness. (#7925)

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Was harmless because TextA is always zero-terminated, and TextA.Size >= CurLenA + 1.
This commit is contained in:
ocornut 2024-11-04 20:24:36 +01:00
parent 75f83de52a
commit 82d0584e7b
1 changed files with 7 additions and 7 deletions
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14
imgui_widgets.cpp
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@ -3930,7 +3930,7 @@ namespace ImStb
{
static int STB_TEXTEDIT_STRINGLEN(const ImGuiInputTextState* obj) { return obj->CurLenA; }
static char STB_TEXTEDIT_GETCHAR(const ImGuiInputTextState* obj, int idx) { IM_ASSERT(idx <= obj->CurLenA); return obj->TextA[idx]; }
static float STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx) { unsigned int c; ImTextCharFromUtf8(&c, obj->TextA.Data + line_start_idx + char_idx, obj->TextA.Data + obj->TextA.Size); if ((ImWchar)c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance((ImWchar)c) * g.FontScale; }
static float STB_TEXTEDIT_GETWIDTH(ImGuiInputTextState* obj, int line_start_idx, int char_idx) { unsigned int c; ImTextCharFromUtf8(&c, obj->TextA.Data + line_start_idx + char_idx, obj->TextA.Data + obj->CurLenA); if ((ImWchar)c == '\n') return IMSTB_TEXTEDIT_GETWIDTH_NEWLINE; ImGuiContext& g = *obj->Ctx; return g.Font->GetCharAdvance((ImWchar)c) * g.FontScale; }
static char STB_TEXTEDIT_NEWLINE = '\n';
static void STB_TEXTEDIT_LAYOUTROW(StbTexteditRow* r, ImGuiInputTextState* obj, int line_start_idx)
{
@ -3953,7 +3953,7 @@ static int IMSTB_TEXTEDIT_GETNEXTCHARINDEX_IMPL(ImGuiInputTextState* obj, int id
if (idx >= obj->CurLenA)
return obj->CurLenA + 1;
unsigned int c;
return idx + ImTextCharFromUtf8(&c, obj->TextA.Data + idx, obj->TextA.Data + obj->TextA.Size);
return idx + ImTextCharFromUtf8(&c, obj->TextA.Data + idx, obj->TextA.Data + obj->CurLenA);
}
static int IMSTB_TEXTEDIT_GETPREVCHARINDEX_IMPL(ImGuiInputTextState* obj, int idx)
@ -3986,8 +3986,8 @@ static int is_word_boundary_from_right(ImGuiInputTextState* obj, int idx)
const char* curr_p = obj->TextA.Data + idx;
const char* prev_p = ImTextFindPreviousUtf8Codepoint(obj->TextA.Data, curr_p);
unsigned int curr_c; ImTextCharFromUtf8(&curr_c, curr_p, obj->TextA.Data + obj->TextA.Size);
unsigned int prev_c; ImTextCharFromUtf8(&prev_c, prev_p, obj->TextA.Data + obj->TextA.Size);
unsigned int curr_c; ImTextCharFromUtf8(&curr_c, curr_p, obj->TextA.Data + obj->CurLenA);
unsigned int prev_c; ImTextCharFromUtf8(&prev_c, prev_p, obj->TextA.Data + obj->CurLenA);
bool prev_white = ImCharIsBlankW(prev_c);
bool prev_separ = ImCharIsSeparatorW(prev_c);
@ -4002,8 +4002,8 @@ static int is_word_boundary_from_left(ImGuiInputTextState* obj, int idx)
const char* curr_p = obj->TextA.Data + idx;
const char* prev_p = ImTextFindPreviousUtf8Codepoint(obj->TextA.Data, curr_p);
unsigned int prev_c; ImTextCharFromUtf8(&prev_c, curr_p, obj->TextA.Data + obj->TextA.Size);
unsigned int curr_c; ImTextCharFromUtf8(&curr_c, prev_p, obj->TextA.Data + obj->TextA.Size);
unsigned int prev_c; ImTextCharFromUtf8(&prev_c, curr_p, obj->TextA.Data + obj->CurLenA);
unsigned int curr_c; ImTextCharFromUtf8(&curr_c, prev_p, obj->TextA.Data + obj->CurLenA);
bool prev_white = ImCharIsBlankW(prev_c);
bool prev_separ = ImCharIsSeparatorW(prev_c);
@ -5342,8 +5342,8 @@ void ImGui::DebugNodeInputTextState(ImGuiInputTextState* state)
Text("ID: 0x%08X, ActiveID: 0x%08X", state->ID, g.ActiveId);
DebugLocateItemOnHover(state->ID);
Text("CurLenA: %d, Cursor: %d, Selection: %d..%d", state->CurLenA, stb_state->cursor, stb_state->select_start, stb_state->select_end);
Text("TextA.Size: %d, Capacity: %d", state->TextA.Size, state->TextA.Capacity);
Text("BufCapacityA: %d", state->BufCapacityA);
Text("(Internal Buffer: TextA Size: %d, Capacity: %d)", state->TextA.Size, state->TextA.Capacity);
Text("has_preferred_x: %d (%.2f)", stb_state->has_preferred_x, stb_state->preferred_x);
Text("undo_point: %d, redo_point: %d, undo_char_point: %d, redo_char_point: %d", undo_state->undo_point, undo_state->redo_point, undo_state->undo_char_point, undo_state->redo_char_point);
if (BeginChild("undopoints", ImVec2(0.0f, GetTextLineHeight() * 10), ImGuiChildFlags_Borders | ImGuiChildFlags_ResizeY)) // Visualize undo state