Commit 957e6021 authored by Committed by flypig
[calligra] Add optimisations for importing readonly XLSX docs. Contributes to JB#13262
This adds a number of optimisations when importing readonly XLSX format speadsheets. 1. Use the pre-calculated cell content values rather than performing a full recalculation using the cell formulae. 2. Calculate a minimal containing rectangle around the cells with content and import only those cells + a fixed border (5 cells by default). Cells with only a background colour are ignored. This avoids having to import large areas of empty cells (which are a common occurrence in Excel files, since they're generate if the user selects an entire column/row and applies a style to it). The following additional compile-time cmake flags are also added. MSOOXML_MAX_SPREADSHEET_COLS=<integer> Controls the maximum number of columns to import. Defaults to 0x7FFF, the maximum supported by Calligra. MSOOXML_MAX_SPREADSHEET_ROWS=<integer> Controls the maximum number of rows to import. Defaults to 0xFFFFF, the maximum supported by Calligra. MSOOXML_SPREADSHEET_CONTENT_BORDER=<integer> The size of border to add around the minimal containing rectangle for read only documents. Defaults to 5.
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