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/*
* An example of a simple Excel chart with patterns using the libxlsxwriter
* library.
*
* Copyright 2014-2025, John McNamara, jmcnamara@cpan.org
*
*/
#include "xlsxwriter.h"
/* Create a worksheet with a chart. */
int main() {
lxw_workbook *workbook = workbook_new("chart_pattern.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
lxw_chart *chart;
/* Add a bold format to use to highlight the header cells. */
lxw_format *bold = workbook_add_format(workbook);
format_set_bold(bold);
/* Write some data for the chart. */
worksheet_write_string(worksheet, 0, 0, "Shingle", bold);
worksheet_write_number(worksheet, 1, 0, 105, NULL);
worksheet_write_number(worksheet, 2, 0, 150, NULL);
worksheet_write_number(worksheet, 3, 0, 130, NULL);
worksheet_write_number(worksheet, 4, 0, 90, NULL);
worksheet_write_string(worksheet, 0, 1, "Brick", bold);
worksheet_write_number(worksheet, 1, 1, 50, NULL);
worksheet_write_number(worksheet, 2, 1, 120, NULL);
worksheet_write_number(worksheet, 3, 1, 100, NULL);
worksheet_write_number(worksheet, 4, 1, 110, NULL);
/* Create a chart object. */
chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
/* Configure the chart. */
lxw_chart_series *series1 = chart_add_series(chart, NULL, "Sheet1!$A$2:$A$5");
lxw_chart_series *series2 = chart_add_series(chart, NULL, "Sheet1!$B$2:$B$5");
chart_series_set_name(series1, "=Sheet1!$A$1");
chart_series_set_name(series2, "=Sheet1!$B$1");
chart_title_set_name(chart, "Cladding types");
chart_axis_set_name(chart->x_axis, "Region");
chart_axis_set_name(chart->y_axis, "Number of houses");
/* Configure an add the chart series patterns. */
lxw_chart_pattern pattern1 = {.type = LXW_CHART_PATTERN_SHINGLE,
.fg_color = 0x804000,
.bg_color = 0XC68C53};
lxw_chart_pattern pattern2 = {.type = LXW_CHART_PATTERN_HORIZONTAL_BRICK,
.fg_color = 0XB30000,
.bg_color = 0XFF6666};
chart_series_set_pattern(series1, &pattern1);
chart_series_set_pattern(series2, &pattern2);
/* Configure and set the chart series borders. */
lxw_chart_line line1 = {.color = 0x804000};
lxw_chart_line line2 = {.color = 0xb30000};
chart_series_set_line(series1, &line1);
chart_series_set_line(series2, &line2);
/* Widen the gap between the series/categories. */
chart_set_series_gap(chart, 70);
/* Insert the chart into the worksheet. */
worksheet_insert_chart(worksheet, CELL("D2"), chart);
return workbook_close(workbook);
}
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