mirror of
https://github.com/jmcnamara/libxlsxwriter.git
synced 2026-05-21 06:45:21 -06:00
304 lines
10 KiB
C
304 lines
10 KiB
C
/*
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* A demo of an various Excel chart data label features that are available via
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* a libxlsxwriter chart.
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*
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* Copyright 2014-2020, John McNamara, jmcnamara@cpan.org
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*
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*/
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#include "xlsxwriter.h"
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/*
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* Create a worksheet with examples charts.
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*/
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int main() {
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lxw_workbook *workbook = workbook_new("chart_data_labels.xlsx");
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lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
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/* Add a bold format to use to highlight the header cells. */
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lxw_format *bold = workbook_add_format(workbook);
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format_set_bold(bold);
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/* Some chart positioning options. */
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lxw_chart_options options = {.x_offset = 25, .y_offset = 10};
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/* Write some data for the chart. */
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worksheet_write_string(worksheet, 0, 0, "Number", bold);
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worksheet_write_number(worksheet, 1, 0, 2, NULL);
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worksheet_write_number(worksheet, 2, 0, 3, NULL);
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worksheet_write_number(worksheet, 3, 0, 4, NULL);
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worksheet_write_number(worksheet, 4, 0, 5, NULL);
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worksheet_write_number(worksheet, 5, 0, 6, NULL);
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worksheet_write_number(worksheet, 6, 0, 7, NULL);
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worksheet_write_string(worksheet, 0, 1, "Data", bold);
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worksheet_write_number(worksheet, 1, 1, 20, NULL);
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worksheet_write_number(worksheet, 2, 1, 10, NULL);
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worksheet_write_number(worksheet, 3, 1, 20, NULL);
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worksheet_write_number(worksheet, 4, 1, 30, NULL);
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worksheet_write_number(worksheet, 5, 1, 40, NULL);
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worksheet_write_number(worksheet, 6, 1, 30, NULL);
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worksheet_write_string(worksheet, 0, 2, "Text", bold);
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worksheet_write_string(worksheet, 1, 2, "Jan", NULL);
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worksheet_write_string(worksheet, 2, 2, "Feb", NULL);
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worksheet_write_string(worksheet, 3, 2, "Mar", NULL);
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worksheet_write_string(worksheet, 4, 2, "Apr", NULL);
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worksheet_write_string(worksheet, 5, 2, "May", NULL);
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worksheet_write_string(worksheet, 6, 2, "Jun", NULL);
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/*
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* Chart 1. Example with standard data labels.
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*/
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lxw_chart *chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Chart with standard data labels");
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/* Add a data series to the chart. */
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lxw_chart_series *series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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/* Add the series data labels. */
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chart_series_set_labels(series);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D2"), chart, &options);
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/*
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* Chart 2. Example with value and category data labels.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Category and Value data labels");
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/* Add a data series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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/* Add the series data labels. */
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chart_series_set_labels(series);
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/* Turn on Value and Category labels. */
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chart_series_set_labels_options(series, LXW_FALSE, LXW_TRUE, LXW_TRUE);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D18"), chart, &options);
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/*
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* Chart 3. Example with standard data labels with different font.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Data labels with user defined font");
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/* Add a data series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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/* Add the series data labels. */
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chart_series_set_labels(series);
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lxw_chart_font font1 = {.bold = LXW_TRUE, .color = LXW_COLOR_RED, .rotation = -30};
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chart_series_set_labels_font(series, &font1);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D34"), chart, &options);
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/*
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* Chart 4.Example with custom string data labels.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Chart with custom string data labels");
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/* Add a data series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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/* Add the series data labels. */
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chart_series_set_labels(series);
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/* Create some custom labels. */
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lxw_chart_data_label data_label41 = {.value = "Amy"};
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lxw_chart_data_label data_label42 = {.value = "Bea"};
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lxw_chart_data_label data_label43 = {.value = "Eva"};
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lxw_chart_data_label data_label44 = {.value = "Fay"};
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lxw_chart_data_label data_label45 = {.value = "Liv"};
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lxw_chart_data_label data_label46 = {.value = "Una"};
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/* Create an array of label pointers. NULL indicates the end of the array. */
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lxw_chart_data_label *data_labels4[] = {
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&data_label41,
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&data_label42,
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&data_label43,
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&data_label44,
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&data_label45,
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&data_label46,
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NULL
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};
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/* Set the custom labels. */
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chart_series_set_labels_custom(series, data_labels4);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D50"), chart, &options);
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/*
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* Chart 5. Example with custom data labels from cells.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Chart with custom data labels from cells");
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/* Add a data series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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/* Add the series data labels. */
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chart_series_set_labels(series);
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/* Create some custom labels. */
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lxw_chart_data_label data_label51 = {.value = "=Sheet1!$C$2"};
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lxw_chart_data_label data_label52 = {.value = "=Sheet1!$C$3"};
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lxw_chart_data_label data_label53 = {.value = "=Sheet1!$C$4"};
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lxw_chart_data_label data_label54 = {.value = "=Sheet1!$C$5"};
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lxw_chart_data_label data_label55 = {.value = "=Sheet1!$C$6"};
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lxw_chart_data_label data_label56 = {.value = "=Sheet1!$C$7"};
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/* Create an array of label pointers. NULL indicates the end of the array. */
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lxw_chart_data_label *data_labels5[] = {
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&data_label51,
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&data_label52,
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&data_label53,
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&data_label54,
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&data_label55,
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&data_label56,
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NULL
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};
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/* Set the custom labels. */
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chart_series_set_labels_custom(series, data_labels5);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D66"), chart, &options);
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/*
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* Chart 6. Example with custom and default data labels.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Mixed custom and default data labels");
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/* Add a data series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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lxw_chart_font font2 = {.color = LXW_COLOR_RED};
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/* Add the series data labels. */
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chart_series_set_labels(series);
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/* Create some custom labels. */
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/* The following is used to get a mix of default and custom labels. The
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* items initialized with '{0}' and items without a custom label (points 5
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* and 6 which come after NULL) will get the default value. We also set a
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* font for the custom items as an extra example.
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*/
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lxw_chart_data_label data_label61 = {.value = "=Sheet1!$C$2", .font = &font2};
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lxw_chart_data_label data_label62 = {0};
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lxw_chart_data_label data_label63 = {.value = "=Sheet1!$C$4", .font = &font2};
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lxw_chart_data_label data_label64 = {.value = "=Sheet1!$C$5", .font = &font2};
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/* Create an array of label pointers. NULL indicates the end of the array. */
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lxw_chart_data_label *data_labels6[] = {
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&data_label61,
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&data_label62,
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&data_label63,
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&data_label64,
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NULL
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};
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/* Set the custom labels. */
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chart_series_set_labels_custom(series, data_labels6);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D82"), chart, &options);
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/*
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* Chart 7. Example with deleted custom data labels.
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*/
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chart = workbook_add_chart(workbook, LXW_CHART_COLUMN);
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/* Add a chart title. */
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chart_title_set_name(chart, "Chart with deleted data labels");
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/* Add a data series to the chart. */
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series = chart_add_series(chart, "=Sheet1!$A$2:$A$7",
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"=Sheet1!$B$2:$B$7");
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/* Add the series data labels. */
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chart_series_set_labels(series);
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/* Create some custom labels. */
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lxw_chart_data_label delete = {.delete = LXW_TRUE};
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lxw_chart_data_label keep = {.delete = LXW_FALSE};
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/* An initialized struct like this would also work: */
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/* lxw_chart_data_label keep = {0}; */
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/* Create an array of label pointers. NULL indicates the end of the array. */
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lxw_chart_data_label *data_labels7[] = {
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&delete,
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&keep,
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&delete,
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&delete,
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&keep,
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&delete,
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NULL
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};
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/* Set the custom labels. */
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chart_series_set_labels_custom(series, data_labels7);
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/* Turn off the legend. */
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chart_legend_set_position(chart, LXW_CHART_LEGEND_NONE);
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/* Insert the chart into the worksheet. */
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worksheet_insert_chart_opt(worksheet, CELL("D98"), chart, &options);
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return workbook_close(workbook);
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}
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