Initial skeleton for chartsheet class.

Issue #90

.indent.pro

@@ -50,6 +50,7 @@
 -T lxw_chart
 -T lxw_chart_axis
 -T lxw_chart_axis_display_unit
+-T lxw_chart_axis_label_alignment
 -T lxw_chart_axis_label_position
 -T lxw_chart_axis_tick_mark
 -T lxw_chart_axis_tick_position
@@ -77,6 +78,7 @@
 -T lxw_chart_title
 -T lxw_chart_trendline_type
 -T lxw_chart_type
+-T lxw_chartsheet
 -T lxw_col_options
 -T lxw_col_t
 -T lxw_color_t

docs/Doxyfile

@@ -764,6 +764,7 @@ INPUT                  = src/mainpage.dox                     \
                          ../include/xlsxwriter/worksheet.h    \
                          ../include/xlsxwriter/format.h       \
                          ../include/xlsxwriter/chart.h        \
+                         ../include/xlsxwriter/chartsheet.h   \
                          ../include/xlsxwriter/utility.h      \
                          ../include/xlsxwriter/common.h       \
                          src/working_with_formats.dox         \

docs/src/mainpage.dox

@@ -42,11 +42,12 @@ following sections for more information:
 - @ref tutorial02
 - @ref tutorial03
 
-- @ref workbook.h  "The Workbook object"
+- @ref workbook.h   "The Workbook object"
-- @ref worksheet.h "The Worksheet object"
+- @ref worksheet.h  "The Worksheet object"
-- @ref format.h    "The Format object"
+- @ref format.h     "The Format object"
-- @ref chart.h     "The Chart object"
+- @ref chart.h      "The Chart object"
-- @ref utility.h   "Utility functions and macros"
+- @ref chartsheet.h "The Chartsheet object"
+- @ref utility.h    "Utility functions and macros"
 
 - @ref working_with_formats
 - @ref working_with_colors

include/xlsxwriter/chartsheet.h

@@ -0,0 +1,93 @@
+/*
+ * libxlsxwriter
+ *
+ * Copyright 2014-2018, John McNamara, jmcnamara@cpan.org. See LICENSE.txt.
+ *
+ * chartsheet - A libxlsxwriter library for creating Excel XLSX chartsheet files.
+ *
+ */
+
+/**
+ * @page chartsheet_page The Chartsheet object
+ *
+ * The Chartsheet object represents an Excel chartsheet. It handles
+ * operations such as writing data to cells or formatting chartsheet
+ * layout.
+ *
+ * See @ref chartsheet.h for full details of the functionality.
+ *
+ * @file chartsheet.h
+ *
+ * @brief Functions related to adding data and formatting to a chartsheet.
+ *
+ * The Chartsheet object represents an Excel chartsheet. It handles
+ * operations such as writing data to cells or formatting chartsheet
+ * layout.
+ *
+ * A Chartsheet object isn't created directly. Instead a chartsheet is
+ * created by calling the workbook_add_chartsheet() function from a
+ * Workbook object:
+ *
+ * @code
+ *     #include "xlsxwriter.h"
+ *
+ *     int main() {
+ *
+ *         lxw_workbook  *workbook  = workbook_new("filename.xlsx");
+ *         lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
+ *
+ *         worksheet_write_string(worksheet, 0, 0, "Hello Excel", NULL);
+ *
+ *         return workbook_close(workbook);
+ *     }
+ * @endcode
+ *
+ */
+
+#ifndef __LXW_CHARTSHEET_H__
+#define __LXW_CHARTSHEET_H__
+
+#include <stdint.h>
+
+#include "common.h"
+#include "worksheet.h"
+#include "drawing.h"
+
+/*
+ * Struct to represent a chartsheet object.
+ */
+typedef struct lxw_chartsheet {
+
+    FILE *file;
+    lxw_worksheet *worksheet;
+    lxw_drawing *drawing;
+
+    uint16_t rel_count;
+
+} lxw_chartsheet;
+
+
+/* *INDENT-OFF* */
+#ifdef __cplusplus
+extern "C" {
+#endif
+/* *INDENT-ON* */
+
+lxw_chartsheet *lxw_chartsheet_new();
+void lxw_chartsheet_free(lxw_chartsheet *chartsheet);
+void lxw_chartsheet_assemble_xml_file(lxw_chartsheet *self);
+
+/* Declarations required for unit testing. */
+#ifdef TESTING
+
+STATIC void _chartsheet_xml_declaration(lxw_chartsheet *self);
+
+#endif /* TESTING */
+
+/* *INDENT-OFF* */
+#ifdef __cplusplus
+}
+#endif
+/* *INDENT-ON* */
+
+#endif /* __LXW_CHARTSHEET_H__ */

include/xlsxwriter/worksheet.h

@@ -3151,6 +3151,12 @@ void lxw_worksheet_prepare_chart(lxw_worksheet *worksheet,
 lxw_row *lxw_worksheet_find_row(lxw_worksheet *worksheet, lxw_row_t row_num);
 lxw_cell *lxw_worksheet_find_cell(lxw_row *row, lxw_col_t col_num);
 
+/*
+ * External functions to call intern XML methods shared with chartsheet.
+ */
+void lxw_worksheet_write_sheet_views(lxw_worksheet *worksheet);
+void lxw_worksheet_write_page_margins(lxw_worksheet *worksheet);
+
 /* Declarations required for unit testing. */
 #ifdef TESTING
 

src/chartsheet.c

@@ -0,0 +1,201 @@
+/*****************************************************************************
+ * chartsheet - A library for creating Excel XLSX chartsheet files.
+ *
+ * Used in conjunction with the libxlsxwriter library.
+ *
+ * Copyright 2014-2018, John McNamara, jmcnamara@cpan.org. See LICENSE.txt.
+ *
+ */
+
+#include "xlsxwriter/xmlwriter.h"
+#include "xlsxwriter/chartsheet.h"
+#include "xlsxwriter/utility.h"
+
+/*
+ * Forward declarations.
+ */
+
+/*****************************************************************************
+ *
+ * Private functions.
+ *
+ ****************************************************************************/
+
+/*
+ * Create a new chartsheet object.
+ */
+lxw_chartsheet *
+lxw_chartsheet_new()
+{
+    lxw_chartsheet *chartsheet = calloc(1, sizeof(lxw_chartsheet));
+    GOTO_LABEL_ON_MEM_ERROR(chartsheet, mem_error);
+
+    /* Use an embedded worksheet instance to write XML records that are
+     * shared with worksheet.c. */
+    chartsheet->worksheet = lxw_worksheet_new(NULL);
+    GOTO_LABEL_ON_MEM_ERROR(chartsheet->worksheet, mem_error);
+
+    return chartsheet;
+
+mem_error:
+    lxw_chartsheet_free(chartsheet);
+    return NULL;
+}
+
+/*
+ * Free a chartsheet object.
+ */
+void
+lxw_chartsheet_free(lxw_chartsheet *chartsheet)
+{
+    if (!chartsheet)
+        return;
+
+    lxw_worksheet_free(chartsheet->worksheet);
+
+    if (chartsheet->drawing)
+        lxw_drawing_free(chartsheet->drawing);
+
+    free(chartsheet);
+}
+
+/*****************************************************************************
+ *
+ * XML functions.
+ *
+ ****************************************************************************/
+
+/*
+ * Write the XML declaration.
+ */
+STATIC void
+_chartsheet_xml_declaration(lxw_chartsheet *self)
+{
+    lxw_xml_declaration(self->file);
+}
+
+/*
+ * Write the <chartsheet> element.
+ */
+STATIC void
+_chartsheet_write_chartsheet(lxw_chartsheet *self)
+{
+    struct xml_attribute_list attributes;
+    struct xml_attribute *attribute;
+    char xmlns[] = "http://schemas.openxmlformats.org/"
+        "spreadsheetml/2006/main";
+    char xmlns_r[] = "http://schemas.openxmlformats.org/"
+        "officeDocument/2006/relationships";
+
+    LXW_INIT_ATTRIBUTES();
+    LXW_PUSH_ATTRIBUTES_STR("xmlns", xmlns);
+    LXW_PUSH_ATTRIBUTES_STR("xmlns:r", xmlns_r);
+
+    lxw_xml_start_tag(self->file, "chartsheet", &attributes);
+    LXW_FREE_ATTRIBUTES();
+}
+
+/*
+ * Write the <sheetPr> element.
+ */
+STATIC void
+_chartsheet_write_sheet_pr(lxw_chartsheet *self)
+{
+    lxw_xml_empty_tag(self->file, "sheetPr", NULL);
+}
+
+/*
+ * Write the <sheetViews> element.
+ */
+STATIC void
+_chartsheet_write_sheet_views(lxw_chartsheet *self)
+{
+    lxw_worksheet_write_sheet_views(self->worksheet);
+}
+
+/*
+ * Write the <pageMargins> element.
+ */
+STATIC void
+_chartsheet_write_page_margins(lxw_chartsheet *self)
+{
+    lxw_worksheet_write_page_margins(self->worksheet);
+}
+
+/*
+ * Write the <drawing> element.
+ */
+STATIC void
+_chartsheet_write_drawing(lxw_chartsheet *self, uint16_t id)
+{
+    struct xml_attribute_list attributes;
+    struct xml_attribute *attribute;
+    char r_id[LXW_MAX_ATTRIBUTE_LENGTH];
+
+    lxw_snprintf(r_id, LXW_ATTR_32, "rId%d", id);
+
+    LXW_INIT_ATTRIBUTES();
+
+    LXW_PUSH_ATTRIBUTES_STR("r:id", r_id);
+
+    lxw_xml_empty_tag(self->file, "drawing", &attributes);
+
+    LXW_FREE_ATTRIBUTES();
+
+}
+
+/*
+ * Write the <drawing> elements.
+ */
+STATIC void
+_chartsheet_write_drawings(lxw_chartsheet *self)
+{
+    if (!self->drawing)
+        return;
+
+    self->rel_count++;
+
+    _chartsheet_write_drawing(self, self->rel_count);
+}
+
+/*****************************************************************************
+ *
+ * XML file assembly functions.
+ *
+ ****************************************************************************/
+
+/*
+ * Assemble and write the XML file.
+ */
+void
+lxw_chartsheet_assemble_xml_file(lxw_chartsheet *self)
+{
+    /* Set the embedded worksheet filehandle to the same as the chartsheet. */
+    self->worksheet->file = self->file;
+
+    /* Write the XML declaration. */
+    _chartsheet_xml_declaration(self);
+
+    /* Write the chartsheet element. */
+    _chartsheet_write_chartsheet(self);
+
+    /* Write the sheetPr element. */
+    _chartsheet_write_sheet_pr(self);
+
+    /* Write the sheetViews element. */
+    _chartsheet_write_sheet_views(self);
+
+    /* Write the pageMargins element. */
+    _chartsheet_write_page_margins(self);
+
+    /* Write the drawing element. */
+    _chartsheet_write_drawings(self);
+
+    lxw_xml_end_tag(self->file, "chartsheet");
+}
+
+/*****************************************************************************
+ *
+ * Public functions.
+ *
+ ****************************************************************************/

src/worksheet.c

@@ -3437,7 +3437,7 @@ _worksheet_write_sheet_protection(lxw_worksheet *self)
  * Write the <drawing> element.
  */
 STATIC void
-_write_drawing(lxw_worksheet *self, uint16_t id)
+_worksheet_write_drawing(lxw_worksheet *self, uint16_t id)
 {
     struct xml_attribute_list attributes;
     struct xml_attribute *attribute;
@@ -3459,14 +3459,14 @@ _write_drawing(lxw_worksheet *self, uint16_t id)
  * Write the <drawing> elements.
  */
 STATIC void
-_write_drawings(lxw_worksheet *self)
+_worksheet_write_drawings(lxw_worksheet *self)
 {
     if (!self->drawing)
         return;
 
     self->rel_count++;
 
-    _write_drawing(self, self->rel_count);
+    _worksheet_write_drawing(self, self->rel_count);
 }
 
 /*
@@ -3687,6 +3687,21 @@ _worksheet_write_data_validations(lxw_worksheet *self)
     LXW_FREE_ATTRIBUTES();
 }
 
+/*
+ * External functions to call intern XML methods shared with chartsheet.
+ */
+void
+lxw_worksheet_write_sheet_views(lxw_worksheet *self)
+{
+    _worksheet_write_sheet_views(self);
+}
+
+void
+lxw_worksheet_write_page_margins(lxw_worksheet *self)
+{
+    _worksheet_write_page_margins(self);
+}
+
 /*
  * Assemble and write the XML file.
  */
@@ -3754,7 +3769,7 @@ lxw_worksheet_assemble_xml_file(lxw_worksheet *self)
     _worksheet_write_col_breaks(self);
 
     /* Write the drawing element. */
-    _write_drawings(self);
+    _worksheet_write_drawings(self);
 
     /* Close the worksheet tag. */
     lxw_xml_end_tag(self->file, "worksheet");

test/unit/Makefile

@@ -37,6 +37,7 @@ SRCS += $(wildcard styles/test*.c)
 SRCS += $(wildcard drawing/test*.c)
 SRCS += $(wildcard chart/test*.c)
 SRCS += $(wildcard custom/test*.c)
+SRCS += $(wildcard chartsheet/test*.c)
 # End of SRCS
 
 OBJS  = $(patsubst %.c,%.o,$(SRCS))
@@ -70,6 +71,7 @@ all :
 	$(Q)$(MAKE) -C drawing
 	$(Q)$(MAKE) -C chart
 	$(Q)$(MAKE) -C custom
+	$(Q)$(MAKE) -C chartsheet
 # END make all
 
 clean :
@@ -87,6 +89,7 @@ clean :
 	$(Q)$(MAKE) clean -C drawing
 	$(Q)$(MAKE) clean -C chart
 	$(Q)$(MAKE) clean -C custom
+	$(Q)$(MAKE) clean -C chartsheet
 # END make clean
 
 

test/unit/chartsheet/Makefile

@@ -0,0 +1,8 @@
+###############################################################################
+#
+# Makefile for libxlsxwriter library.
+#
+# Copyright 2014-2015, John McNamara, jmcnamara@cpan.org
+#
+
+include ../Makefile.unit

test/unit/chartsheet/main.c

@@ -0,0 +1,15 @@
+/*
+ * Test runner for xmlwriter using ctest.
+ *
+ * Copyright 2014-2016 John McNamara, jmcnamara@cpan.org
+ *
+ */
+#define CTEST_MAIN
+
+#include "../ctest.h"
+
+int main(int argc, const char *argv[])
+{
+    return ctest_main(argc, argv);
+}
+

test/unit/chartsheet/test_chartsheet.c

@@ -0,0 +1,39 @@
+/*
+ * Tests for the lib_xlsx_writer library.
+ *
+ * Copyright 2014-2018, John McNamara, jmcnamara@cpan.org
+ *
+ */
+
+#include "../ctest.h"
+#include "../helper.h"
+
+#include "xlsxwriter/chartsheet.h"
+
+// Test assembling a complete Chartsheet file.
+CTEST(chartsheet, chartsheet) {
+
+    char* got;
+    char exp[] =
+        "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"
+        "<chartsheet xmlns=\"http://schemas.openxmlformats.org/spreadsheetml/2006/main\" xmlns:r=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships\">"
+          "<sheetPr/>"
+          "<sheetViews>"
+            "<sheetView workbookViewId=\"0\"/>"
+          "</sheetViews>"
+          "<pageMargins left=\"0.7\" right=\"0.7\" top=\"0.75\" bottom=\"0.75\" header=\"0.3\" footer=\"0.3\"/>"
+          "<drawing r:id=\"rId1\"/>"
+        "</chartsheet>";
+
+    FILE* testfile = lxw_tmpfile(NULL);
+
+    lxw_chartsheet *chartsheet = lxw_chartsheet_new(NULL);
+    chartsheet->file = testfile;
+    chartsheet->drawing = lxw_drawing_new(NULL);
+
+    lxw_chartsheet_assemble_xml_file(chartsheet);
+
+    RUN_XLSX_STREQ_SHORT(exp, got);
+
+    lxw_chartsheet_free(chartsheet);
+}

test/unit/chartsheet/test_chartsheet_xml_declaration.c

@@ -0,0 +1,28 @@
+/*
+ * Tests for the libxlsxwriter library.
+ *
+ * Copyright 2014-2016, John McNamara, jmcnamara@cpan.org
+ *
+ */
+
+#include "../ctest.h"
+#include "../helper.h"
+
+#include "xlsxwriter/chartsheet.h"
+
+// Test _xml_declaration().
+CTEST(chartsheet, xml_declaration) {
+
+    char* got;
+    char exp[] = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n";
+    FILE* testfile = tmpfile();
+
+    lxw_chartsheet *chartsheet = lxw_chartsheet_new();
+    chartsheet->file = testfile;
+
+    _chartsheet_xml_declaration(chartsheet);
+
+    RUN_XLSX_STREQ(exp, got);
+
+    lxw_chartsheet_free(chartsheet);
+}