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InputText(): Fixed state corruption/crash bug in stb_textedit redo logic when exhausting undo char buffer (#715 #681)

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ocornut 2016-07-14 13:08:37 +02:00
parent 88721118fd
commit c0f77f12ea
1 changed files with 3 additions and 1 deletions
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4
stb_textedit.h
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@ -1,4 +1,5 @@
// [ImGui] this is a slightly modified version of stb_truetype.h 1.8
// [ImGui] - fixed a state corruption/crash bug in stb_text_redo and stb_textedit_discard_redo (#715)
// [ImGui] - fixed a crash bug in stb_textedit_discard_redo (#681)
// [ImGui] - fixed some minor warnings
// [ImGui] - added STB_TEXTEDIT_MOVEWORDLEFT/STB_TEXTEDIT_MOVEWORDRIGHT custom handler (#473)
@ -1101,8 +1102,8 @@ static void stb_textedit_discard_redo(StbUndoState *state)
if (state->undo_rec[i].char_storage >= 0)
state->undo_rec[i].char_storage = state->undo_rec[i].char_storage + (short) n; // vsnet05
}
STB_TEXTEDIT_memmove(state->undo_rec + state->redo_point, state->undo_rec + state->redo_point-1, (size_t) ((size_t)(STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0])));
++state->redo_point;
STB_TEXTEDIT_memmove(state->undo_rec + state->redo_point-1, state->undo_rec + state->redo_point, (size_t) ((size_t)(STB_TEXTEDIT_UNDOSTATECOUNT - state->redo_point)*sizeof(state->undo_rec[0])));
}
}
@ -1260,6 +1261,7 @@ static void stb_text_redo(STB_TEXTEDIT_STRING *str, STB_TexteditState *state)
if (r.insert_length) {
// easy case: need to insert n characters
STB_TEXTEDIT_INSERTCHARS(str, r.where, &s->undo_char[r.char_storage], r.insert_length);
s->redo_char_point += r.insert_length;
}
state->cursor = r.where + r.insert_length;