UPDATE: Merge cells

.github/workflows/pypi.yml

@@ -117,7 +117,7 @@ jobs:
           MATURIN_REPOSITORY_URL: "https://test.pypi.org/legacy/"
         with:
           command: upload
-          args: "--skip-existing **/*.whl **/*.tar.gz"
+          args: "--skip-existing **/*.whl"
           working-directory: bindings/python
 
   publish-pypi:
@@ -137,5 +137,5 @@ jobs:
           MATURIN_REPOSITORY_URL: "https://upload.pypi.org/legacy/"
         with:
           command: upload
-          args: "--skip-existing **/*.whl **/*.tar.gz"
+          args: "--skip-existing **/*.whl"
           working-directory: bindings/python

Cargo.lock

@@ -721,10 +721,11 @@ dependencies = [
 
 [[package]]
 name = "pyo3"
-version = "0.25.0"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f239d656363bcee73afef85277f1b281e8ac6212a1d42aa90e55b90ed43c47a4"
+checksum = "57fe09249128b3173d092de9523eaa75136bf7ba85e0d69eca241c7939c933cc"
 dependencies = [
+ "cfg-if",
  "indoc",
  "libc",
  "memoffset",
@@ -738,9 +739,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-build-config"
-version = "0.25.0"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "755ea671a1c34044fa165247aaf6f419ca39caa6003aee791a0df2713d8f1b6d"
+checksum = "1cd3927b5a78757a0d71aa9dff669f903b1eb64b54142a9bd9f757f8fde65fd7"
 dependencies = [
  "once_cell",
  "target-lexicon",
@@ -748,9 +749,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-ffi"
-version = "0.25.0"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc95a2e67091e44791d4ea300ff744be5293f394f1bafd9f78c080814d35956e"
+checksum = "dab6bb2102bd8f991e7749f130a70d05dd557613e39ed2deeee8e9ca0c4d548d"
 dependencies = [
  "libc",
  "pyo3-build-config",
@@ -758,9 +759,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros"
-version = "0.25.0"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a179641d1b93920829a62f15e87c0ed791b6c8db2271ba0fd7c2686090510214"
+checksum = "91871864b353fd5ffcb3f91f2f703a22a9797c91b9ab497b1acac7b07ae509c7"
 dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
@@ -770,9 +771,9 @@ dependencies = [
 
 [[package]]
 name = "pyo3-macros-backend"
-version = "0.25.0"
+version = "0.23.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9dff85ebcaab8c441b0e3f7ae40a6963ecea8a9f5e74f647e33fcf5ec9a1e89e"
+checksum = "43abc3b80bc20f3facd86cd3c60beed58c3e2aa26213f3cda368de39c60a27e4"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -783,9 +784,8 @@ dependencies = [
 
 [[package]]
 name = "pyroncalc"
-version = "0.5.6"
+version = "0.5.0"
 dependencies = [
- "bitcode",
  "ironcalc",
  "pyo3",
  "serde",
@@ -979,9 +979,9 @@ dependencies = [
 
 [[package]]
 name = "target-lexicon"
-version = "0.13.2"
+version = "0.12.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e502f78cdbb8ba4718f566c418c52bc729126ffd16baee5baa718cf25dd5a69a"
+checksum = "61c41af27dd6d1e27b1b16b489db798443478cef1f06a660c96db617ba5de3b1"
 
 [[package]]
 name = "thiserror"
@@ -1070,7 +1070,7 @@ checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
 
 [[package]]
 name = "wasm"
-version = "0.5.3"
+version = "0.5.0"
 dependencies = [
  "ironcalc_base",
  "serde",

base/src/cell.rs

@@ -89,6 +89,8 @@ impl Cell {
             Cell::CellFormulaNumber { s, .. } => *s = style,
             Cell::CellFormulaString { s, .. } => *s = style,
             Cell::CellFormulaError { s, .. } => *s = style,
+            // Should we throw an error here?
+            Cell::Merged { .. } => {}
         };
     }
 
@@ -104,6 +106,8 @@ impl Cell {
             Cell::CellFormulaNumber { s, .. } => *s,
             Cell::CellFormulaString { s, .. } => *s,
             Cell::CellFormulaError { s, .. } => *s,
+            // A merged cell has no style
+            Cell::Merged { .. } => 0,
         }
     }
 
@@ -119,6 +123,7 @@ impl Cell {
             Cell::CellFormulaNumber { .. } => CellType::Number,
             Cell::CellFormulaString { .. } => CellType::Text,
             Cell::CellFormulaError { .. } => CellType::ErrorValue,
+            Cell::Merged { .. } => CellType::Number,
         }
     }
 
@@ -156,6 +161,7 @@ impl Cell {
                 let v = ei.to_localized_error_string(language);
                 CellValue::String(v)
             }
+            Cell::Merged { .. } => CellValue::None,
         }
     }
 

base/src/lib.rs

@@ -59,6 +59,7 @@ pub mod mock_time;
 
 pub use model::get_milliseconds_since_epoch;
 pub use model::Model;
+pub use model::CellStructure;
 pub use user_model::BorderArea;
 pub use user_model::ClipboardData;
 pub use user_model::UserModel;

base/src/model.rs

@@ -31,6 +31,7 @@ use crate::{
 };
 
 use chrono_tz::Tz;
+use serde::{Deserialize, Serialize};
 
 #[cfg(test)]
 pub use crate::mock_time::get_milliseconds_since_epoch;
@@ -72,6 +73,27 @@ pub(crate) enum CellState {
     Evaluating,
 }
 
+/// Cell structure indicates if the cell is part of a merged cell or not
+#[derive(Clone, Serialize, Deserialize)]
+pub enum CellStructure {
+    /// The cell is not part of a merged cell
+    Simple,
+    /// The cell is part of a merged cell, and teh root cell is (row, column)
+    Merged {
+        /// Row of the root cell
+        row: i32,
+        /// Column of the root cell
+        column: i32,
+    },
+    /// The cell is the root of a merged cell of dimensions (width, height)
+    MergedRoot {
+        /// Width of the merged cell
+        width: i32,
+        /// Height of the merged cell
+        height: i32,
+    },
+}
+
 /// A parsed formula for a defined name
 #[derive(Clone)]
 pub(crate) enum ParsedDefinedName {
@@ -751,6 +773,7 @@ impl Model {
                     }
                 }
             }
+            Merged { .. } => CalcResult::EmptyCell,
         }
     }
 
@@ -1438,6 +1461,10 @@ impl Model {
         value: String,
     ) -> Result<(), String> {
         // If value starts with "'" then we force the style to be quote_prefix
+        let cell = self.workbook.worksheet(sheet)?.cell(row, column);
+        if matches!(cell, Some(Cell::Merged { .. })) {
+            return Err("Cannot set value on merged cell".to_string());
+        }
         let style_index = self.get_cell_style_index(sheet, row, column)?;
         if let Some(new_value) = value.strip_prefix('\'') {
             // First check if it needs quoting
@@ -2258,6 +2285,91 @@ impl Model {
     pub fn delete_row_style(&mut self, sheet: u32, row: i32) -> Result<(), String> {
         self.workbook.worksheet_mut(sheet)?.delete_row_style(row)
     }
+
+    /// Returns the geometric structure of a cell
+    pub fn get_cell_structure(
+        &self,
+        sheet: u32,
+        row: i32,
+        column: i32,
+    ) -> Result<CellStructure, String> {
+        let worksheet = self.workbook.worksheet(sheet)?;
+        worksheet.get_cell_structure(row, column)
+    }
+
+    /// Merges cells
+    pub fn merge_cells(
+        &mut self,
+        sheet: u32,
+        row: i32,
+        column: i32,
+        width: i32,
+        height: i32,
+    ) -> Result<(), String> {
+        let worksheet = self.workbook.worksheet_mut(sheet)?;
+        let sheet_data = &mut worksheet.sheet_data;
+        // First check that it is possible to merge the cells
+        for r in row..(row + height) {
+            for c in column..(column + width) {
+                if let Some(Cell::Merged { .. }) =
+                    sheet_data.get(&r).and_then(|row_data| row_data.get(&c))
+                {
+                    return Err("Cannot merge cells".to_string());
+                }
+            }
+        }
+        worksheet
+            .merged_cells
+            .insert((row, column), (width, height));
+        for r in row..(row + height) {
+            for c in column..(column + width) {
+                // We remove everything except the "root" cell:
+                if r == row && c == column {
+                    continue;
+                }
+                if let Some(row_data) = sheet_data.get_mut(&r) {
+                    row_data.remove(&c);
+                    row_data.insert(c, Cell::Merged { r: row, c: column });
+                } else {
+                    let mut row_data = HashMap::new();
+                    row_data.insert(c, Cell::Merged { r: row, c: column });
+                    sheet_data.insert(r, row_data);
+                }
+            }
+        }
+        Ok(())
+    }
+
+    /// Unmerges cells
+    pub fn unmerge_cells(&mut self, sheet: u32, row: i32, column: i32) -> Result<(), String> {
+        let s = self.get_cell_style_index(sheet, row, column)?;
+        let worksheet = self.workbook.worksheet_mut(sheet)?;
+        let sheet_data = &mut worksheet.sheet_data;
+        let (width, height) = match worksheet.merged_cells.get(&(row, column)) {
+            Some((w, h)) => (*w, *h),
+            None => return Ok(()),
+        };
+        worksheet.merged_cells.remove(&(row, column));
+        for r in row..(row + width) {
+            for c in column..(column + height) {
+                // We remove everything except the "root" cell:
+                if r == row && c == column {
+                    continue;
+                }
+                if let Some(row_data) = sheet_data.get_mut(&r) {
+                    row_data.remove(&c);
+                    if s != 0 {
+                        row_data.insert(c, Cell::EmptyCell { s });
+                    }
+                } else if s != 0 {
+                    let mut row_data = HashMap::new();
+                    row_data.insert(c, Cell::EmptyCell { s });
+                    sheet_data.insert(r, row_data);
+                }
+            }
+        }
+        Ok(())
+    }
 }
 
 #[cfg(test)]

base/src/new_empty.rs

@@ -58,10 +58,10 @@ impl Model {
             rows: vec![],
             comments: vec![],
             dimension: "A1".to_string(),
-            merge_cells: vec![],
             name: name.to_string(),
             shared_formulas: vec![],
             sheet_data: Default::default(),
+            merged_cells: HashMap::new(),
             sheet_id,
             state: SheetState::Visible,
             color: Default::default(),
@@ -405,7 +405,6 @@ impl Model {
             },
             tables: HashMap::new(),
             views,
-            users: Vec::new(),
         };
         let parsed_formulas = Vec::new();
         let worksheets = &workbook.worksheets;

base/src/types.rs

@@ -39,14 +39,6 @@ pub struct WorkbookView {
     pub window_height: i64,
 }
 
-#[derive(Encode, Decode, Debug, PartialEq, Eq, Clone, Serialize, Deserialize)]
-pub struct WebUser {
-    pub id: String,
-    pub sheet: u32,
-    pub row: i32,
-    pub column: i32,
-}
-
 /// An internal representation of an IronCalc Workbook
 #[derive(Encode, Decode, Debug, PartialEq, Clone)]
 pub struct Workbook {
@@ -59,7 +51,6 @@ pub struct Workbook {
     pub metadata: Metadata,
     pub tables: HashMap<String, Table>,
     pub views: HashMap<u32, WorkbookView>,
-    pub users: Vec<WebUser>
 }
 
 /// A defined name. The `sheet_id` is the sheet index in case the name is local
@@ -119,7 +110,7 @@ pub struct Worksheet {
     pub sheet_id: u32,
     pub state: SheetState,
     pub color: Option<String>,
-    pub merge_cells: Vec<String>,
+    pub merged_cells: HashMap<(i32, i32), (i32, i32)>,
     pub comments: Vec<Comment>,
     pub frozen_rows: i32,
     pub frozen_columns: i32,
@@ -226,7 +217,10 @@ pub enum Cell {
         // Error Message: "Not implemented function"
         m: String,
     },
-    // TODO: Array formulas
+    Merged {
+        r: i32,
+        c: i32,
+    }, // TODO: Array formulas
 }
 
 impl Default for Cell {

base/src/user_model/common.rs

@@ -11,10 +11,10 @@ use crate::{
         types::{Area, CellReferenceIndex},
         utils::{is_valid_column_number, is_valid_row},
     },
-    model::Model,
+    model::{CellStructure, Model},
     types::{
         Alignment, BorderItem, CellType, Col, HorizontalAlignment, SheetProperties, SheetState,
-        Style, VerticalAlignment, WebUser,
+        Style, VerticalAlignment,
     },
     utils::is_valid_hex_color,
 };
@@ -293,11 +293,6 @@ impl UserModel {
         self.model.workbook.name = name.to_string();
     }
 
-    /// Set users
-    pub fn set_users(&mut self, users: &[WebUser]) {
-        self.model.workbook.users = users.to_vec();
-    }
-
     /// Undoes last change if any, places the change in the redo list and evaluates the model if needed
     ///
     /// See also:
@@ -1874,6 +1869,57 @@ impl UserModel {
         Ok(())
     }
 
+    /// Merges cells
+    pub fn merge_cells(
+        &mut self,
+        sheet: u32,
+        row: i32,
+        column: i32,
+        width: i32,
+        height: i32,
+    ) -> Result<(), String> {
+        let old_data = Vec::new();
+        let diff_list = vec![Diff::MergeCells {
+            sheet,
+            row,
+            column,
+            width,
+            height,
+            old_data,
+        }];
+        self.model.merge_cells(sheet, row, column, width, height)?;
+        self.push_diff_list(diff_list);
+        self.evaluate_if_not_paused();
+        Ok(())
+    }
+
+    /// Check if cell is part of a merged cell
+    pub fn get_cell_structure(&self, sheet: u32, row: i32, column: i32) -> Result<CellStructure, String> {
+        self.model.get_cell_structure(sheet, row, column)
+    }
+
+    /// Unmerges cells
+    pub fn unmerge_cells(&mut self, sheet: u32, row: i32, column: i32) -> Result<(), String> {
+        let (width, height) = self
+            .model
+            .workbook
+            .worksheet(sheet)?
+            .merged_cells
+            .get(&(row, column))
+            .ok_or("No merged cells found")?;
+        let diff_list = vec![Diff::UnmergeCells {
+            sheet,
+            row,
+            column,
+            width: *width,
+            height: *height,
+        }];
+        self.model.unmerge_cells(sheet, row, column)?;
+        self.push_diff_list(diff_list);
+        self.evaluate_if_not_paused();
+        Ok(())
+    }
+
     // **** Private methods ****** //
 
     pub(crate) fn push_diff_list(&mut self, diff_list: DiffList) {
@@ -2117,7 +2163,6 @@ impl UserModel {
                     worksheet.frozen_rows = old_data.frozen_rows;
                     worksheet.state = old_data.state.clone();
                     worksheet.color = old_data.color.clone();
-                    worksheet.merge_cells = old_data.merge_cells.clone();
                     worksheet.shared_formulas = old_data.shared_formulas.clone();
                     self.model.reset_parsed_structures();
 
@@ -2168,6 +2213,34 @@ impl UserModel {
                         self.model.delete_row_style(*sheet, *row)?;
                     }
                 }
+                Diff::MergeCells {
+                    sheet,
+                    row,
+                    column,
+                    width,
+                    height,
+                    old_data,
+                } => {
+                    needs_evaluation = true;
+                    self.model.unmerge_cells(*sheet, *row, *column)?;
+                    // for (r, c, v) in old_data.iter() {
+                    //     self.model
+                    //         .workbook
+                    //         .worksheet_mut(*sheet)?
+                    //         .update_cell(*r, *c, v.clone())?;
+                    // }
+                }
+                Diff::UnmergeCells {
+                    sheet,
+                    row,
+                    column,
+                    width,
+                    height,
+                } => {
+                    needs_evaluation = true;
+                    self.model
+                        .merge_cells(*sheet, *row, *column, *width, *height)?;
+                }
             }
         }
         if needs_evaluation {
@@ -2369,6 +2442,34 @@ impl UserModel {
                 } => {
                     self.model.delete_row_style(*sheet, *row)?;
                 }
+                Diff::MergeCells {
+                    sheet,
+                    row,
+                    column,
+                    width,
+                    height,
+                    old_data: _,
+                } => {
+                    needs_evaluation = true;
+                    self.model
+                        .merge_cells(*sheet, *row, *column, *width, *height)?;
+                    // for (r, c, v) in old_data.iter() {
+                    //     self.model
+                    //         .workbook
+                    //         .worksheet_mut(*sheet)?
+                    //         .update_cell(*r, *c, v.clone())?;
+                    // }
+                }
+                Diff::UnmergeCells {
+                    sheet,
+                    row,
+                    column,
+                    width,
+                    height,
+                } => {
+                    needs_evaluation = true;
+                    self.model.unmerge_cells(*sheet, *row, *column)?;
+                }
             }
         }
 

base/src/user_model/history.rs

@@ -161,7 +161,21 @@ pub(crate) enum Diff {
         new_scope: Option<u32>,
         new_formula: String,
     },
-    // FIXME: we are missing SetViewDiffs
+    MergeCells {
+        sheet: u32,
+        row: i32,
+        column: i32,
+        width: i32,
+        height: i32,
+        old_data: Vec<(Cell, Style)>,
+    },
+    UnmergeCells {
+        sheet: u32,
+        row: i32,
+        column: i32,
+        width: i32,
+        height: i32,
+    }, // FIXME: we are missing SetViewDiffs
 }
 
 pub(crate) type DiffList = Vec<Diff>;

base/src/user_model/ui.rs

@@ -2,7 +2,10 @@
 
 use serde::{Deserialize, Serialize};
 
-use crate::expressions::utils::{is_valid_column_number, is_valid_row};
+use crate::{
+    expressions::utils::{is_valid_column_number, is_valid_row},
+    CellStructure,
+};
 
 use super::common::UserModel;
 
@@ -97,26 +100,47 @@ impl UserModel {
         if !is_valid_row(row) {
             return Err(format!("Invalid row: '{row}'"));
         }
-        if self.model.workbook.worksheet(sheet).is_err() {
+        let worksheet = self.model.workbook.worksheet_mut(sheet)?;
-            return Err(format!("Invalid worksheet index {}", sheet));
+        let structure = worksheet.get_cell_structure(row, column)?;
+        // check if the selected cell is a merged cell
+        let [row_start, columns_start, row_end, columns_end] = match structure {
+            CellStructure::Simple => [row, column, row, column],
+            CellStructure::Merged {
+                row: row_start,
+                column: column_start,
+            } => {
+                let (width, height) = match worksheet.merged_cells.get(&(row_start, column_start)) {
+                    Some(s) => s,
+                    None => return Err(format!("Merged cell not found: ({row_start}, {column_start}) when clicking at ({row}, {column}).")),
+                };
+                let row_end = row_start + height - 1;
+                let column_end = column_start + width - 1;
+                [row_start, column_start, row_end, column_end]
             }
-        if let Ok(worksheet) = self.model.workbook.worksheet_mut(sheet) {
+            CellStructure::MergedRoot { width, height } => {
+                let row_start = row;
+                let columns_start = column;
+                let row_end = row + height - 1;
+                let columns_end = column + width - 1;
+                [row_start, columns_start, row_end, columns_end]
+            }
+        };
         if let Some(view) = worksheet.views.get_mut(&0) {
-                view.row = row;
+            view.row = row_start;
-                view.column = column;
+            view.column = columns_start;
-                view.range = [row, column, row, column];
+            view.range = [row_start, columns_start, row_end, columns_end];
-            }
         }
+
         Ok(())
     }
 
     /// Sets the selected range. Note that the selected cell must be in one of the corners.
     pub fn set_selected_range(
         &mut self,
-        start_row: i32,
+        row_start: i32,
-        start_column: i32,
+        column_start: i32,
-        end_row: i32,
+        row_end: i32,
-        end_column: i32,
+        column_end: i32,
     ) -> Result<(), String> {
         let sheet = if let Some(view) = self.model.workbook.views.get(&self.model.view_id) {
             view.sheet
@@ -124,42 +148,72 @@ impl UserModel {
             0
         };
 
-        if !is_valid_column_number(start_column) {
+        if !is_valid_column_number(column_start) {
-            return Err(format!("Invalid column: '{start_column}'"));
+            return Err(format!("Invalid column: '{column_start}'"));
         }
-        if !is_valid_row(start_row) {
+        if !is_valid_row(row_start) {
-            return Err(format!("Invalid row: '{start_row}'"));
+            return Err(format!("Invalid row: '{row_start}'"));
         }
 
-        if !is_valid_column_number(end_column) {
+        if !is_valid_column_number(column_end) {
-            return Err(format!("Invalid column: '{end_column}'"));
+            return Err(format!("Invalid column: '{column_end}'"));
+        }
+        if !is_valid_row(row_end) {
+            return Err(format!("Invalid row: '{row_end}'"));
+        }
+        let mut start_row = row_start;
+        let mut start_column = column_start;
+        let mut end_row = row_end;
+        let mut end_column = column_end;
+        let worksheet = self.model.workbook.worksheet_mut(sheet)?;
+        let merged_cells = &worksheet.merged_cells;
+        if !merged_cells.is_empty() {
+            // We need to check if there are merged cells in the selected range
+            for row in row_start..=row_end {
+                for column in column_start..=column_end {
+                    let structure = &worksheet.get_cell_structure(row, column)?;
+                    match structure {
+                        CellStructure::Simple => {}
+                        CellStructure::Merged { row: r, column: c } => {
+                            // The selected range must contain the merged cell
+                            let (width, height) = match merged_cells.get(&(*r, *c)) {
+                                Some(s) => s,
+                                None => return Err(format!("Merged cell not found: ({r}, {c}) when selecting range ({start_row}, {start_column}, {end_row}, {end_column}).")),
+                            };
+                            start_row = start_row.min(*r);
+                            start_column = start_column.min(*c);
+                            end_row = end_row.max(*r + height - 1);
+                            end_column = end_column.max(*c + width - 1);
+
+                        }
+                        CellStructure::MergedRoot { width, height } => {
+                            // The selected range must contain the merged cell
+                            end_row = end_row.max(row + height - 1);
+                            end_column = end_column.max(column + width - 1);
+                        }
+                    }
                 }
-        if !is_valid_row(end_row) {
-            return Err(format!("Invalid row: '{end_row}'"));
             }
-        if self.model.workbook.worksheet(sheet).is_err() {
-            return Err(format!("Invalid worksheet index {}", sheet));
         }
-        if let Ok(worksheet) = self.model.workbook.worksheet_mut(sheet) {
         if let Some(view) = worksheet.views.get_mut(&0) {
-                let selected_row = view.row;
+            // let selected_row = view.row;
-                let selected_column = view.column;
+            // let selected_column = view.column;
-                // The selected cells must be on one of the corners of the selected range:
+            // // The selected cells must be on one of the corners of the selected range:
-                if selected_row != start_row && selected_row != end_row {
+            // if selected_row != start_row && selected_row != end_row {
-                    return Err(format!(
+            //     return Err(format!(
-                        "The selected cells is not in one of the corners. Row: '{}' and row range '({}, {})'",
+            //             "The selected cells is not in one of the corners. Row: '{}' and row range '({}, {})'",
-                        selected_row, start_row, end_row
+            //             selected_row, start_row, end_row
-                    ));
+            //         ));
-                }
+            // }
-                if selected_column != start_column && selected_column != end_column {
+            // if selected_column != start_column && selected_column != end_column {
-                    return Err(format!(
+            //     return Err(format!(
-                        "The selected cells is not in one of the corners. Column '{}' and column range '({}, {})'",
+            //             "The selected cells is not in one of the corners. Column '{}' and column range '({}, {})'",
-                        selected_column, start_column, end_column
+            //             selected_column, start_column, end_column
-                    ));
+            //         ));
-                }
+            // }
             view.range = [start_row, start_column, end_row, end_column];
         }
-        }
+
         Ok(())
     }
 

base/src/worksheet.rs

@@ -1,6 +1,7 @@
 use crate::constants::{self, LAST_COLUMN, LAST_ROW};
 use crate::expressions::types::CellReferenceIndex;
 use crate::expressions::utils::{is_valid_column_number, is_valid_row};
+use crate::CellStructure;
 use crate::{expressions::token::Error, types::*};
 
 use std::collections::HashMap;
@@ -38,6 +39,24 @@ impl Worksheet {
         self.sheet_data.get(&row)?.get(&column)
     }
 
+    pub fn get_cell_structure(&self, row: i32, column: i32) -> Result<CellStructure, String> {
+        if let Some((width, height)) = self.merged_cells.get(&(row, column)) {
+            return Ok(CellStructure::MergedRoot {
+                width: *width,
+                height: *height,
+            });
+        }
+        let cell = self.cell(row, column);
+        if let Some(Cell::Merged { r, c }) = cell {
+            return Ok(CellStructure::Merged {
+                row: *r,
+                column: *c,
+            });
+        }
+
+        Ok(CellStructure::Simple)
+    }
+
     pub(crate) fn cell_mut(&mut self, row: i32, column: i32) -> Option<&mut Cell> {
         self.sheet_data.get_mut(&row)?.get_mut(&column)
     }

bindings/python/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pyroncalc"
-version = "0.5.6"
+version = "0.5.0"
 edition = "2021"
 
 
@@ -13,8 +13,7 @@ crate-type = ["cdylib"]
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 xlsx = { package= "ironcalc", path = "../../xlsx", version = "0.5.0" }
-pyo3 = { version = "0.25", features = ["extension-module"] }
+pyo3 = { version = "0.23", features = ["extension-module"] }
-bitcode = "0.6.3"
 
 
 [features]

bindings/python/pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "ironcalc"
-version = "0.5.6"
+version = "0.5.0"
 description = "Create, edit and evaluate Excel spreadsheets"
 requires-python = ">=3.10"
 keywords = [

bindings/python/src/lib.rs

@@ -2,8 +2,8 @@ use pyo3::exceptions::PyException;
 use pyo3::{create_exception, prelude::*, wrap_pyfunction};
 
 use types::{PySheetProperty, PyStyle};
-use xlsx::base::types::{Style, Workbook};
+use xlsx::base::types::Style;
-use xlsx::base::{Model, UserModel};
+use xlsx::base::Model;
 
 use xlsx::export::{save_to_icalc, save_to_xlsx};
 use xlsx::import;
@@ -14,60 +14,6 @@ use crate::types::PyCellType;
 
 create_exception!(_ironcalc, WorkbookError, PyException);
 
-#[pyclass]
-pub struct PyUserModel {
-    /// The user model, which is a wrapper around the Model
-    pub model: UserModel,
-}
-
-#[pymethods]
-impl PyUserModel {
-    /// Saves the user model to an xlsx file
-    pub fn save_to_xlsx(&self, file: &str) -> PyResult<()> {
-        let model = self.model.get_model();
-        save_to_xlsx(model, file).map_err(|e| WorkbookError::new_err(e.to_string()))
-    }
-
-    /// Saves the user model to file in the internal binary ic format
-    pub fn save_to_icalc(&self, file: &str) -> PyResult<()> {
-        let model = self.model.get_model();
-        save_to_icalc(model, file).map_err(|e| WorkbookError::new_err(e.to_string()))
-    }
-
-    pub fn apply_external_diffs(&mut self, external_diffs: &[u8]) -> PyResult<()> {
-        self.model
-            .apply_external_diffs(external_diffs)
-            .map_err(|e| WorkbookError::new_err(e.to_string()))
-    }
-
-    pub fn flush_send_queue(&mut self) -> Vec<u8> {
-        self.model.flush_send_queue()
-    }
-
-    pub fn set_user_input(
-        &mut self,
-        sheet: u32,
-        row: i32,
-        column: i32,
-        value: &str,
-    ) -> PyResult<()> {
-        self.model
-            .set_user_input(sheet, row, column, value)
-            .map_err(|e| WorkbookError::new_err(e.to_string()))
-    }
-
-    pub fn get_formatted_cell_value(&self, sheet: u32, row: i32, column: i32) -> PyResult<String> {
-        self.model
-            .get_formatted_cell_value(sheet, row, column)
-            .map_err(|e| WorkbookError::new_err(e.to_string()))
-    }
-
-    pub fn to_bytes(&self) -> PyResult<Vec<u8>> {
-        let bytes = self.model.to_bytes();
-        Ok(bytes)
-    }
-}
-
 /// This is a model implementing the 'raw' API
 #[pyclass]
 pub struct PyModel {
@@ -86,12 +32,6 @@ impl PyModel {
         save_to_icalc(&self.model, file).map_err(|e| WorkbookError::new_err(e.to_string()))
     }
 
-    /// To bytes
-    pub fn to_bytes(&self) -> PyResult<Vec<u8>> {
-        let bytes = self.model.to_bytes();
-        Ok(bytes)
-    }
-
     /// Evaluates the workbook
     pub fn evaluate(&mut self) {
         self.model.evaluate()
@@ -309,15 +249,6 @@ pub fn load_from_icalc(file_name: &str) -> PyResult<PyModel> {
     Ok(PyModel { model })
 }
 
-#[pyfunction]
-pub fn load_from_bytes(bytes: &[u8]) -> PyResult<PyModel> {
-    let workbook: Workbook =
-        bitcode::decode(bytes).map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    let model =
-        Model::from_workbook(workbook).map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    Ok(PyModel { model })
-}
-
 /// Creates an empty model
 #[pyfunction]
 pub fn create(name: &str, locale: &str, tz: &str) -> PyResult<PyModel> {
@@ -326,43 +257,6 @@ pub fn create(name: &str, locale: &str, tz: &str) -> PyResult<PyModel> {
     Ok(PyModel { model })
 }
 
-#[pyfunction]
-pub fn create_user_model(name: &str, locale: &str, tz: &str) -> PyResult<PyUserModel> {
-    let model = UserModel::new_empty(name, locale, tz)
-        .map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    Ok(PyUserModel { model })
-}
-
-#[pyfunction]
-pub fn create_user_model_from_xlsx(
-    file_path: &str,
-    locale: &str,
-    tz: &str,
-) -> PyResult<PyUserModel> {
-    let model = import::load_from_xlsx(file_path, locale, tz)
-        .map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    let model = UserModel::from_model(model);
-    Ok(PyUserModel { model })
-}
-
-#[pyfunction]
-pub fn create_user_model_from_icalc(file_name: &str) -> PyResult<PyUserModel> {
-    let model =
-        import::load_from_icalc(file_name).map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    let model = UserModel::from_model(model);
-    Ok(PyUserModel { model })
-}
-
-#[pyfunction]
-pub fn create_user_model_from_bytes(bytes: &[u8]) -> PyResult<PyUserModel> {
-    let workbook: Workbook =
-        bitcode::decode(bytes).map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    let model =
-        Model::from_workbook(workbook).map_err(|e| WorkbookError::new_err(e.to_string()))?;
-    let user_model = UserModel::from_model(model);
-    Ok(PyUserModel { model: user_model })
-}
-
 #[pyfunction]
 #[allow(clippy::panic)]
 pub fn test_panic() {
@@ -378,14 +272,7 @@ fn ironcalc(m: &Bound<'_, PyModule>) -> PyResult<()> {
     m.add_function(wrap_pyfunction!(create, m)?)?;
     m.add_function(wrap_pyfunction!(load_from_xlsx, m)?)?;
     m.add_function(wrap_pyfunction!(load_from_icalc, m)?)?;
-    m.add_function(wrap_pyfunction!(load_from_bytes, m)?)?;
     m.add_function(wrap_pyfunction!(test_panic, m)?)?;
 
-    // User model functions
-    m.add_function(wrap_pyfunction!(create_user_model, m)?)?;
-    m.add_function(wrap_pyfunction!(create_user_model_from_bytes, m)?)?;
-    m.add_function(wrap_pyfunction!(create_user_model_from_xlsx, m)?)?;
-    m.add_function(wrap_pyfunction!(create_user_model_from_icalc, m)?)?;
-
     Ok(())
 }

bindings/python/tests/test_create.py

@@ -6,24 +6,3 @@ def test_simple():
     model.evaluate()
 
     assert model.get_formatted_cell_value(0, 1, 1) == "3"
-
-    bytes = model.to_bytes()
-
-    model2 = ic.load_from_bytes(bytes)
-    assert model2.get_formatted_cell_value(0, 1, 1) == "3"
-
-
-def test_simple_user():
-    model = ic.create_user_model("model", "en", "UTC")
-    model.set_user_input(0, 1, 1, "=1+2")
-    model.set_user_input(0, 1, 2, "=A1+3")
-
-    assert model.get_formatted_cell_value(0, 1, 1) == "3"
-    assert model.get_formatted_cell_value(0, 1, 2) == "6"
-
-    diffs = model.flush_send_queue()
-
-    model2 = ic.create_user_model("model", "en", "UTC")
-    model2.apply_external_diffs(diffs)
-    assert model2.get_formatted_cell_value(0, 1, 1) == "3"
-    assert model2.get_formatted_cell_value(0, 1, 2) == "6"

bindings/wasm/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "wasm"
-version = "0.5.3"
+version = "0.5.0"
 authors = ["Nicolas Hatcher <nicolas@theuniverse.today>"]
 description = "IronCalc Web bindings"
 license = "MIT/Apache-2.0"

bindings/wasm/fix_types.py

@@ -201,34 +201,24 @@ defined_name_list_types = r"""
   getDefinedNameList(): DefinedName[];
 """
 
-set_users = r"""
+merged_cells = r"""
-/**
-* @param {any} users
-*/
-  setUsers(users: any): void;
-"""
-
-set_users_types = r"""
-/**
-* @param {WebUser[]} users
-*/
-  setUsers(users: WebUser[]): void;
-"""
-
-get_users = r"""
 /**
+* @param {number} sheet
+* @param {number} row
+* @param {number} column
 * @returns {any}
 */
-  getUsers(): any;
+  getCellStructure(sheet: number, row: number, column: number): any;
-}
 """
 
-get_users_types = r"""
+merged_cells_types = r"""
 /**
-* @returns {WebUser[]}
+* @param {number} sheet
+* @param {number} row
+* @param {number} column
+* @returns {CellStructure}
 */
-  getUsers(): WebUser[];
+  getCellStructure(sheet: number, row: number, column: number): CellStructure;
-}
 """
 
 def fix_types(text):
@@ -245,8 +235,7 @@ def fix_types(text):
     text = text.replace(clipboard, clipboard_types)
     text = text.replace(paste_from_clipboard, paste_from_clipboard_types)
     text = text.replace(defined_name_list, defined_name_list_types)
-    text = text.replace(set_users, set_users_types)
+    text = text.replace(merged_cells, merged_cells_types)
-    text = text.replace(get_users, get_users_types)
     with open("types.ts") as f:
         types_str = f.read()
         header_types = "{}\n\n{}".format(header, types_str)

bindings/wasm/src/lib.rs

@@ -5,9 +5,7 @@ use wasm_bindgen::{
 };
 
 use ironcalc_base::{
-    expressions::{lexer::util::get_tokens as tokenizer, types::Area, utils::number_to_column},
+    expressions::{lexer::util::get_tokens as tokenizer, types::Area, utils::number_to_column}, types::{CellType, Style}, BorderArea, ClipboardData, UserModel as BaseModel
-    types::{CellType, Style, WebUser},
-    BorderArea, ClipboardData, UserModel as BaseModel,
 };
 
 fn to_js_error(error: String) -> JsError {
@@ -673,17 +671,35 @@ impl Model {
             .map_err(|e| to_js_error(e.to_string()))
     }
 
-    #[wasm_bindgen(js_name = "setUsers")]
+    #[wasm_bindgen(js_name = "mergeCells")]
-    pub fn set_users(&mut self, users: JsValue) -> Result<(), JsError> {
+    pub fn merge_cells(
-        let users: Vec<WebUser> =
+        &mut self,
-            serde_wasm_bindgen::from_value(users).map_err(|e| to_js_error(e.to_string()))?;
+        sheet: u32,
-        self.model.set_users(&users);
+        row: i32,
-        Ok(())
+        column: i32,
+        width: i32,
+        height: i32,
+    ) -> Result<(), JsError> {
+        self.model
+            .merge_cells(sheet, row, column, width, height)
+            .map_err(to_js_error)
     }
 
-    #[wasm_bindgen(js_name = "getUsers")]
+    #[wasm_bindgen(js_name = "unmergeCells")]
-    pub fn get_users(&self) -> Result<JsValue, JsError> {
+    pub fn unmerge_cells(&mut self, sheet: u32, row: i32, column: i32) -> Result<(), JsError> {
-        let users = self.model.get_model().workbook.users.clone();
+        self.model
-        serde_wasm_bindgen::to_value(&users).map_err(|e| to_js_error(e.to_string()))
+            .unmerge_cells(sheet, row, column)
+            .map_err(to_js_error)
+    }
+
+    #[wasm_bindgen(js_name = "getCellStructure")]
+    pub fn get_cell_structure(
+        &self,
+        sheet: u32,
+        row: i32,
+        column: i32,
+    ) -> Result<JsValue, JsError> {
+        let data = self.model.get_cell_structure(sheet, row, column).map_err(|e| to_js_error(e.to_string()))?;
+        serde_wasm_bindgen::to_value(&data).map_err(|e| to_js_error(e.to_string()))
     }
 }

bindings/wasm/types.ts

@@ -235,9 +235,7 @@ export interface DefinedName {
   formula: string;
 }
 
-export interface WebUser {
+export type CellStructure =
-  id: string;
+  | "Simple"
-  sheet: number;
+  | { Merged: { row: number; column: number } }
-  row: number;
+  | { MergedRoot: { width: number; height: number } };
-  column: number;
-}

webapp/IronCalc/package-lock.json

@@ -1,16 +1,16 @@
 {
   "name": "@ironcalc/workbook",
-  "version": "0.5.5",
+  "version": "0.3.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@ironcalc/workbook",
-      "version": "0.5.5",
+      "version": "0.3.2",
       "dependencies": {
         "@emotion/react": "^11.14.0",
         "@emotion/styled": "^11.14.0",
-        "@ironcalc/wasm": "0.5.3",
+        "@ironcalc/wasm": "file:../../bindings/wasm/pkg",
         "@mui/material": "^6.4",
         "@mui/system": "^6.4",
         "i18next": "^23.11.1",
@@ -43,6 +43,11 @@
         "react-dom": "^18.0.0 || ^19.0.0"
       }
     },
+    "../../bindings/wasm/pkg": {
+      "name": "@ironcalc/wasm",
+      "version": "0.5.0",
+      "license": "MIT/Apache-2.0"
+    },
     "node_modules/@adobe/css-tools": {
       "version": "4.4.2",
       "resolved": "https://registry.npmjs.org/@adobe/css-tools/-/css-tools-4.4.2.tgz",
@@ -1055,10 +1060,8 @@
       }
     },
     "node_modules/@ironcalc/wasm": {
-      "version": "0.5.3",
+      "resolved": "../../bindings/wasm/pkg",
-      "resolved": "https://registry.npmjs.org/@ironcalc/wasm/-/wasm-0.5.3.tgz",
+      "link": true
-      "integrity": "sha512-ryQKR5ISkSQnnsxBYDnrAUN+GDiAQUx0MzkVpJr7VQXiymOSMZbHfpv5geum1eSJV4gw1ft69syuNolIhVZ4Hg==",
-      "license": "MIT/Apache-2.0"
     },
     "node_modules/@isaacs/cliui": {
       "version": "8.0.2",

webapp/IronCalc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@ironcalc/workbook",
-  "version": "0.5.5",
+  "version": "0.3.2",
   "type": "module",
   "main": "./dist/ironcalc.js",
   "module": "./dist/ironcalc.js",
@@ -17,7 +17,7 @@
   "dependencies": {
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.0",
-    "@ironcalc/wasm": "0.5.3",
+    "@ironcalc/wasm": "file:../../bindings/wasm/pkg",
     "@mui/material": "^6.4",
     "@mui/system": "^6.4",
     "i18next": "^23.11.1",

webapp/IronCalc/src/components/Toolbar/Toolbar.tsx

@@ -40,6 +40,8 @@ import {
   ArrowMiddleFromLine,
   DecimalPlacesDecreaseIcon,
   DecimalPlacesIncreaseIcon,
+  MergeCellsIcon,
+  UnmergeCellsIcon,
 } from "../../icons";
 import { theme } from "../../theme";
 import BorderPicker from "../BorderPicker/BorderPicker";
@@ -74,6 +76,8 @@ type ToolbarProperties = {
   onClearFormatting: () => void;
   onIncreaseFontSize: (delta: number) => void;
   onDownloadPNG: () => void;
+  onMergeCells: () => void;
+  onUnmergeCells: () => void;
   fillColor: string;
   fontColor: string;
   fontSize: number;
@@ -429,6 +433,28 @@ function Toolbar(properties: ToolbarProperties) {
       >
         <ImageDown />
       </StyledButton>
+      <StyledButton
+        type="button"
+        $pressed={false}
+        disabled={!canEdit}
+        onClick={() => {
+          properties.onMergeCells();
+        }}
+        title={t("toolbar.merge_cells")}
+      >
+        <MergeCellsIcon /> 
+      </StyledButton>
+      <StyledButton
+        type="button"
+        $pressed={false}
+        disabled={!canEdit}
+        onClick={() => {
+          properties.onUnmergeCells();
+        }}
+        title={t("toolbar.unmerge_cells")}
+      >
+        <UnmergeCellsIcon /> 
+      </StyledButton>
 
       <ColorPicker
         color={properties.fontColor}

webapp/IronCalc/src/components/Workbook/Workbook.tsx

@@ -567,15 +567,19 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
           const {
             range: [rowStart, columnStart, rowEnd, columnEnd],
           } = model.getSelectedView();
-          // NB: cells outside of the displayed area are not rendered
+          const { topLeftCell, bottomRightCell } =
-          // I think the only reasonable way to do this would be server side.
+            worksheetCanvas.getVisibleCells();
+          const firstRow = Math.max(rowStart, topLeftCell.row);
+          const firstColumn = Math.max(columnStart, topLeftCell.column);
+          const lastRow = Math.min(rowEnd, bottomRightCell.row);
+          const lastColumn = Math.min(columnEnd, bottomRightCell.column);
           let [x, y] = worksheetCanvas.getCoordinatesByCell(
-            rowStart,
+            firstRow,
-            columnStart,
+            firstColumn,
           );
           const [x1, y1] = worksheetCanvas.getCoordinatesByCell(
-            rowEnd + 1,
+            lastRow + 1,
-            columnEnd + 1,
+            lastColumn + 1,
           );
           const width = (x1 - x) * devicePixelRatio;
           const height = (y1 - y) * devicePixelRatio;
@@ -607,6 +611,29 @@ const Workbook = (props: { model: Model; workbookState: WorkbookState }) => {
           downloadLink.download = "ironcalc.png";
           downloadLink.click();
         }}
+        onMergeCells={() => {
+          const {
+            sheet,
+            range: [rowStart, columnStart, rowEnd, columnEnd],
+          } = model.getSelectedView();
+          const row = Math.min(rowStart, rowEnd);
+          const column = Math.min(columnStart, columnEnd);
+
+          const width = Math.abs(columnEnd - columnStart) + 1;
+          const height = Math.abs(rowEnd - rowStart) + 1;
+          model.mergeCells(sheet, row, column, width, height);
+          setRedrawId((id) => id + 1);
+        }}
+        onUnmergeCells={() => {
+          const {
+            sheet,
+            range: [rowStart, columnStart, rowEnd, columnEnd],
+          } = model.getSelectedView();
+          const row = Math.min(rowStart, rowEnd);
+          const column = Math.min(columnStart, columnEnd);
+          model.unmergeCells(sheet, row, column);
+          setRedrawId((id) => id + 1);
+        }}
         onBorderChanged={(border: BorderOptions): void => {
           const {
             sheet,

webapp/IronCalc/src/components/Worksheet/usePointer.ts

@@ -236,17 +236,10 @@ const usePointer = (options: PointerSettings): PointerEvents => {
           );
           // we continue to select the new cell
         }
-        if (event.shiftKey) {
-          // We are extending the selection
-          options.onAreaSelecting(cell);
-          options.onAreaSelected();
-        } else {
-          // We are selecting a single cell
         options.onCellSelected(cell, event);
         isSelecting.current = true;
         worksheetWrapper.setPointerCapture(event.pointerId);
       }
-      }
     },
     [options],
   );

webapp/IronCalc/src/components/WorksheetCanvas/worksheetCanvas.ts

@@ -19,13 +19,6 @@ import {
   outlineColor,
 } from "./constants";
 
-export interface UserSelection {
-  userId: string;
-  color: string;
-  selection: [number, number, number, number, number]; // [sheet, rowStart, columnStart, rowEnd, columnEnd]
-  div: HTMLDivElement;
-}
-
 export interface CanvasSettings {
   model: Model;
   width: number;
@@ -393,10 +386,29 @@ export default class WorksheetCanvas {
     column: number,
     x: number,
     y: number,
-    width: number,
+    width1: number,
-    height: number,
+    height1: number,
   ): void {
     const selectedSheet = this.model.getSelectedSheet();
+    const structure = this.model.getCellStructure(selectedSheet, row, column);
+    if (typeof structure === 'object' && 'Merged' in structure) {
+      // We don't render merged cells
+      return;
+    }
+    let width = width1;
+    let height = height1;
+    if (typeof structure === 'object' && 'MergedRoot' in structure) {
+      const root = structure.MergedRoot;
+      const columns = root.width;
+      const rows = root.height;
+      for (let i = 1; i < columns; i += 1) {
+        width += this.getColumnWidth(selectedSheet, column + i);
+      }
+      for (let i = 1; i < rows; i += 1) {
+        height += this.getRowHeight(selectedSheet, row + i);
+      }
+    };
+
     const style = this.model.getCellStyle(selectedSheet, row, column);
 
     let backgroundColor = "#FFFFFF";
@@ -1251,33 +1263,6 @@ export default class WorksheetCanvas {
     editor.style.height = `${height - 1}px`;
   }
 
-  private drawUsersSelection(): void {
-    const users = this.model.getUsers();
-    for (const handle of document.querySelectorAll(
-      ".user-selection-ironcalc",
-    ))
-      handle.remove();
-    users.forEach((user, index) => {
-      const { sheet, row, column } = user;
-      if (sheet !== this.model.getSelectedSheet()) {
-        return;
-      }
-      const [x, y] = this.getCoordinatesByCell(row, column);
-      const width = this.getColumnWidth(sheet, column);
-      const height = this.getRowHeight(sheet, row);
-      const div = document.createElement("div");
-      const color = getColor(index + 1);
-      div.className = "user-selection-ironcalc";
-      div.style.left = `${x}px`;
-      div.style.top = `${y}px`;
-      div.style.width = `${width}px`;
-      div.style.height = `${height}px`;
-      div.style.border = `1px solid ${color}`;
-      div.style.position = "absolute";
-      this.canvas.parentElement?.appendChild(div);
-    });
-  }
-
   private drawCellOutline(): void {
     const { cellOutline, areaOutline, cellOutlineHandle } = this;
     if (this.workbookState.getEditingCell()) {
@@ -1629,7 +1614,6 @@ export default class WorksheetCanvas {
     context.stroke();
 
     this.drawCellOutline();
-    this.drawUsersSelection();
     this.drawCellEditor();
     this.drawExtendToArea();
     this.drawActiveRanges(topLeftCell, bottomRightCell);

webapp/IronCalc/src/icons/index.ts

@@ -23,6 +23,9 @@ import InsertRowBelow from "./insert-row-below.svg?react";
 import IronCalcIcon from "./ironcalc_icon.svg?react";
 import IronCalcLogo from "./orange+black.svg?react";
 
+import MergeCellsIcon from "./merge-cells.svg?react";
+import UnmergeCellsIcon from "./unmerge-cells.svg?react";
+
 import Fx from "./fx.svg?react";
 
 export {
@@ -47,5 +50,7 @@ export {
   InsertRowBelow,
   IronCalcIcon,
   IronCalcLogo,
+  MergeCellsIcon,
+  UnmergeCellsIcon,
   Fx,
 };

webapp/IronCalc/src/icons/merge-cells.svg

@@ -0,0 +1,4 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M8 2L3.33333 2C2.59695 2 2 2.59695 2 3.33333L2 5M8 2L12.6667 2C13.403 2 14 2.59695 14 3.33333L14 5M8 2L8 5M8 14L12.6667 14C13.403 14 14 13.403 14 12.6667L14 11M8 14L3.33333 14C2.59695 14 2 13.403 2 12.6667L2 11M8 14L8 11M2 5L2 11M2 5L14 5M2 11L14 11M14 5L14 11" stroke="#333333" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M5 8L11 8M5 8L6 9L6 7L5 8ZM11 8L10 7L10 9L11 8Z" stroke="#333333" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

webapp/IronCalc/src/icons/unmerge-cells.svg

@@ -0,0 +1,5 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M8 2L3.33333 2C2.59695 2 2 2.59695 2 3.33333L2 5M8 2L12.6667 2C13.403 2 14 2.59695 14 3.33333L14 5M8 2L8 5M8 14L12.6667 14C13.403 14 14 13.403 14 12.6667L14 11M8 14L3.33333 14C2.59695 14 2 13.403 2 12.6667L2 11M8 14L8 11M2 5L2 11M2 5L14 5M2 11L14 11M14 5L14 11" stroke="#333333" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M2 8L6 8M6 8L5 7L5 9L6 8Z" stroke="#333333" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M14 8L10 8M10 8L11 7L11 9L10 8Z" stroke="#333333" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

webapp/IronCalc/src/locale/en_us.json

@@ -27,6 +27,8 @@
     "vertical_align_top": "Align top",
     "selected_png": "Export Selected area as PNG",
     "wrap_text": "Wrap text",
+    "merge_cells": "Merge cells",
+    "unmerge_cells": "Unmerge cells",
     "format_menu": {
       "auto": "Auto",
       "number": "Number",

xlsx/src/export/worksheets.rs

@@ -220,6 +220,7 @@ pub(crate) fn get_worksheet_xml(
                         "<c r=\"{cell_name}\" t=\"e\"{style}><f>{formula}</f><v>{ei}</v></c>"
                     ));
                 }
+                Cell::Merged { .. } => { /* do nothing */ }
             }
         }
         let row_style_str = match row_style_dict.get(row_index) {
@@ -247,7 +248,7 @@ pub(crate) fn get_worksheet_xml(
     }
     let sheet_data = sheet_data_str.join("");
 
-    for merge_cell_ref in &worksheet.merge_cells {
+    for merge_cell_ref in &worksheet.merged_cells {
         merged_cells_str.push(format!("<mergeCell ref=\"{merge_cell_ref}\"/>"))
     }
     let merged_cells_count = merged_cells_str.len();

xlsx/src/import/mod.rs

@@ -110,7 +110,6 @@ fn load_xlsx_from_reader<R: Read + std::io::Seek>(
         metadata,
         tables,
         views,
-        users: Vec::new(),
     })
 }
 

xlsx/src/import/worksheets.rs

@@ -989,7 +989,7 @@ pub(super) fn load_sheet<R: Read + std::io::Seek>(
         sheet_data.insert(row_index, data_row);
     }
 
-    let merge_cells = load_merge_cells(ws)?;
+    let merged_cells = load_merged_cells(ws)?;
 
     // Conditional Formatting
     // <conditionalFormatting sqref="B1:B9">
@@ -1028,7 +1028,7 @@ pub(super) fn load_sheet<R: Read + std::io::Seek>(
             sheet_id,
             state: state.to_owned(),
             color,
-            merge_cells,
+            merged_cells,
             comments: settings.comments,
             frozen_rows: sheet_view.frozen_rows,
             frozen_columns: sheet_view.frozen_columns,