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InputText(): lose cursor/undo-stack when reactivating focus is buffer has changed size

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ocornut 2015-09-12 00:02:59 +01:00
parent 0abe668221
commit f9928e96c7
1 changed files with 15 additions and 11 deletions
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22
imgui.cpp
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@ -7093,6 +7093,7 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
// Start edition
// Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
// From the moment we focused we are ignoring the content of 'buf'
const int prev_len_w = edit_state.CurLenW;
edit_state.Text.resize(buf_size); // wchar count <= utf-8 count
edit_state.InitialText.resize(buf_size); // utf-8
ImFormatString(edit_state.InitialText.Data, edit_state.InitialText.Size, "%s", buf);
@ -7102,15 +7103,10 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
edit_state.InputCursorScreenPos = ImVec2(-1.f, -1.f);
edit_state.CursorAnimReset();
if (edit_state.Id != id)
{
edit_state.Id = id;
edit_state.ScrollX = 0.f;
stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
if (!is_multiline && focus_requested_by_code)
select_all = true;
}
else
// Preserve cursor position and undo/redo stack if we come back to same widget
// FIXME: We should probably compare the whole buffer to be on the safety side. Comparing buf (utf8) and edit_state.Text (wchar).
const bool recycle_state = (edit_state.Id == id) && (prev_len_w == edit_state.CurLenW);
if (recycle_state)
{
// Recycle existing cursor/selection/undo stack but clamp position
// Note a single mouse click will override the cursor/position immediately by calling stb_textedit_click handler.
@ -7118,6 +7114,14 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
edit_state.StbState.select_start = ImMin(edit_state.StbState.select_start, edit_state.CurLenW);
edit_state.StbState.select_end = ImMin(edit_state.StbState.select_end, edit_state.CurLenW);
}
else
{
edit_state.Id = id;
edit_state.ScrollX = 0.f;
stb_textedit_initialize_state(&edit_state.StbState, !is_multiline);
if (!is_multiline && focus_requested_by_code)
select_all = true;
}
if (flags & ImGuiInputTextFlags_AlwaysInsertMode)
edit_state.StbState.insert_mode = true;
if (!is_multiline && (focus_requested_by_tab || (user_clicked && is_ctrl_down)))