EVOLUTION-MANAGER

Edit File: drawing.py

############################################################################### # # Drawing - A class for writing the Excel XLSX Drawing file. # # Copyright 2013-2020, John McNamara, jmcnamara@cpan.org # from . import xmlwriter from .shape import Shape from .utility import get_rgb_color class Drawing(xmlwriter.XMLwriter): """ A class for writing the Excel XLSX Drawing file. """ ########################################################################### # # Public API. # ########################################################################### def __init__(self): """ Constructor. """ super(Drawing, self).__init__() self.drawings = [] self.embedded = 0 self.orientation = 0 ########################################################################### # # Private API. # ########################################################################### def _assemble_xml_file(self): # Assemble and write the XML file. # Write the XML declaration. self._xml_declaration() # Write the xdr:wsDr element. self._write_drawing_workspace() if self.embedded: index = 0 for drawing_properties in self.drawings: # Write the xdr:twoCellAnchor element. index += 1 self._write_two_cell_anchor(index, drawing_properties) else: # Write the xdr:absoluteAnchor element. self._write_absolute_anchor(1) self._xml_end_tag('xdr:wsDr') # Close the file. self._xml_close() def _add_drawing_object(self): # Add a chart, image or shape sub object to the drawing. drawing_object = { 'anchor_type': None, 'dimensions': [], 'width': 0, 'height': 0, 'description': None, 'shape': None, 'anchor': None, 'rel_index': 0, 'url_rel_index': 0, 'tip': None } self.drawings.append(drawing_object) return drawing_object ########################################################################### # # XML methods. # ########################################################################### def _write_drawing_workspace(self): # Write the <xdr:wsDr> element. schema = 'http://schemas.openxmlformats.org/drawingml/' xmlns_xdr = schema + '2006/spreadsheetDrawing' xmlns_a = schema + '2006/main' attributes = [ ('xmlns:xdr', xmlns_xdr), ('xmlns:a', xmlns_a), ] self._xml_start_tag('xdr:wsDr', attributes) def _write_two_cell_anchor(self, index, drawing_properties): # Write the <xdr:twoCellAnchor> element. anchor_type = drawing_properties['type'] dimensions = drawing_properties['dimensions'] col_from = dimensions[0] row_from = dimensions[1] col_from_offset = dimensions[2] row_from_offset = dimensions[3] col_to = dimensions[4] row_to = dimensions[5] col_to_offset = dimensions[6] row_to_offset = dimensions[7] col_absolute = dimensions[8] row_absolute = dimensions[9] width = drawing_properties['width'] height = drawing_properties['height'] description = drawing_properties['description'] shape = drawing_properties['shape'] anchor = drawing_properties['anchor'] rel_index = drawing_properties['rel_index'] url_rel_index = drawing_properties['url_rel_index'] tip = drawing_properties['tip'] attributes = [] # Add attribute for positioning. if anchor == 2: attributes.append(('editAs', 'oneCell')) elif anchor == 3: attributes.append(('editAs', 'absolute')) # Add editAs attribute for shapes. if shape and shape.edit_as: attributes.append(('editAs', shape.edit_as)) self._xml_start_tag('xdr:twoCellAnchor', attributes) # Write the xdr:from element. self._write_from( col_from, row_from, col_from_offset, row_from_offset) # Write the xdr:from element. self._write_to( col_to, row_to, col_to_offset, row_to_offset) if anchor_type == 1: # Graphic frame. # Write the xdr:graphicFrame element for charts. self._write_graphic_frame(index, rel_index, description) elif anchor_type == 2: # Write the xdr:pic element. self._write_pic(index, rel_index, col_absolute, row_absolute, width, height, shape, description, url_rel_index, tip) else: # Write the xdr:sp element for shapes. self._write_sp(index, col_absolute, row_absolute, width, height, shape, url_rel_index, tip) # Write the xdr:clientData element. self._write_client_data() self._xml_end_tag('xdr:twoCellAnchor') def _write_absolute_anchor(self, frame_index): self._xml_start_tag('xdr:absoluteAnchor') # Write the <xdr:absoluteAnchor> element. # Different co-ordinates for horizontal (= 0) and vertical (= 1). if self.orientation == 0: # Write the xdr:pos element. self._write_pos(0, 0) # Write the xdr:ext element. self._write_ext(9308969, 6078325) else: # Write the xdr:pos element. self._write_pos(0, -47625) # Write the xdr:ext element. self._write_ext(6162675, 6124575) # Write the xdr:graphicFrame element. self._write_graphic_frame(frame_index, frame_index) # Write the xdr:clientData element. self._write_client_data() self._xml_end_tag('xdr:absoluteAnchor') def _write_from(self, col, row, col_offset, row_offset): # Write the <xdr:from> element. self._xml_start_tag('xdr:from') # Write the xdr:col element. self._write_col(col) # Write the xdr:colOff element. self._write_col_off(col_offset) # Write the xdr:row element. self._write_row(row) # Write the xdr:rowOff element. self._write_row_off(row_offset) self._xml_end_tag('xdr:from') def _write_to(self, col, row, col_offset, row_offset): # Write the <xdr:to> element. self._xml_start_tag('xdr:to') # Write the xdr:col element. self._write_col(col) # Write the xdr:colOff element. self._write_col_off(col_offset) # Write the xdr:row element. self._write_row(row) # Write the xdr:rowOff element. self._write_row_off(row_offset) self._xml_end_tag('xdr:to') def _write_col(self, data): # Write the <xdr:col> element. self._xml_data_element('xdr:col', data) def _write_col_off(self, data): # Write the <xdr:colOff> element. self._xml_data_element('xdr:colOff', data) def _write_row(self, data): # Write the <xdr:row> element. self._xml_data_element('xdr:row', data) def _write_row_off(self, data): # Write the <xdr:rowOff> element. self._xml_data_element('xdr:rowOff', data) def _write_pos(self, x, y): # Write the <xdr:pos> element. attributes = [('x', x), ('y', y)] self._xml_empty_tag('xdr:pos', attributes) def _write_ext(self, cx, cy): # Write the <xdr:ext> element. attributes = [('cx', cx), ('cy', cy)] self._xml_empty_tag('xdr:ext', attributes) def _write_graphic_frame(self, index, rel_index, name=None): # Write the <xdr:graphicFrame> element. attributes = [('macro', '')] self._xml_start_tag('xdr:graphicFrame', attributes) # Write the xdr:nvGraphicFramePr element. self._write_nv_graphic_frame_pr(index, name) # Write the xdr:xfrm element. self._write_xfrm() # Write the a:graphic element. self._write_atag_graphic(rel_index) self._xml_end_tag('xdr:graphicFrame') def _write_nv_graphic_frame_pr(self, index, name): # Write the <xdr:nvGraphicFramePr> element. if not name: name = 'Chart ' + str(index) self._xml_start_tag('xdr:nvGraphicFramePr') # Write the xdr:cNvPr element. self._write_c_nv_pr(index + 1, name, None, None, None) # Write the xdr:cNvGraphicFramePr element. self._write_c_nv_graphic_frame_pr() self._xml_end_tag('xdr:nvGraphicFramePr') def _write_c_nv_pr(self, index, name, description, url_rel_index, tip): # Write the <xdr:cNvPr> element. attributes = [('id', index), ('name', name)] # Add description attribute for images. if description is not None: attributes.append(('descr', description)) if url_rel_index: self._xml_start_tag('xdr:cNvPr', attributes) # Write the a:hlinkClick element. self._write_a_hlink_click(url_rel_index, tip) self._xml_end_tag('xdr:cNvPr') else: self._xml_empty_tag('xdr:cNvPr', attributes) def _write_a_hlink_click(self, rel_index, tip): # Write the <a:hlinkClick> element. schema = 'http://schemas.openxmlformats.org/officeDocument/' xmlns_r = schema + '2006/relationships' attributes = [ ('xmlns:r', xmlns_r), ('r:id', 'rId' + str(rel_index)), ] if tip: attributes.append(('tooltip', tip)) self._xml_empty_tag('a:hlinkClick', attributes) def _write_c_nv_graphic_frame_pr(self): # Write the <xdr:cNvGraphicFramePr> element. if self.embedded: self._xml_empty_tag('xdr:cNvGraphicFramePr') else: self._xml_start_tag('xdr:cNvGraphicFramePr') # Write the a:graphicFrameLocks element. self._write_a_graphic_frame_locks() self._xml_end_tag('xdr:cNvGraphicFramePr') def _write_a_graphic_frame_locks(self): # Write the <a:graphicFrameLocks> element. attributes = [('noGrp', 1)] self._xml_empty_tag('a:graphicFrameLocks', attributes) def _write_xfrm(self): # Write the <xdr:xfrm> element. self._xml_start_tag('xdr:xfrm') # Write the xfrmOffset element. self._write_xfrm_offset() # Write the xfrmOffset element. self._write_xfrm_extension() self._xml_end_tag('xdr:xfrm') def _write_xfrm_offset(self): # Write the <a:off> xfrm sub-element. attributes = [ ('x', 0), ('y', 0), ] self._xml_empty_tag('a:off', attributes) def _write_xfrm_extension(self): # Write the <a:ext> xfrm sub-element. attributes = [ ('cx', 0), ('cy', 0), ] self._xml_empty_tag('a:ext', attributes) def _write_atag_graphic(self, index): # Write the <a:graphic> element. self._xml_start_tag('a:graphic') # Write the a:graphicData element. self._write_atag_graphic_data(index) self._xml_end_tag('a:graphic') def _write_atag_graphic_data(self, index): # Write the <a:graphicData> element. uri = 'http://schemas.openxmlformats.org/drawingml/2006/chart' attributes = [('uri', uri,)] self._xml_start_tag('a:graphicData', attributes) # Write the c:chart element. self._write_c_chart('rId' + str(index)) self._xml_end_tag('a:graphicData') def _write_c_chart(self, r_id): # Write the <c:chart> element. schema = 'http://schemas.openxmlformats.org/' xmlns_c = schema + 'drawingml/2006/chart' xmlns_r = schema + 'officeDocument/2006/relationships' attributes = [ ('xmlns:c', xmlns_c), ('xmlns:r', xmlns_r), ('r:id', r_id), ] self._xml_empty_tag('c:chart', attributes) def _write_client_data(self): # Write the <xdr:clientData> element. self._xml_empty_tag('xdr:clientData') def _write_sp(self, index, col_absolute, row_absolute, width, height, shape, url_rel_index, tip): # Write the <xdr:sp> element. if shape and shape.connect: attributes = [('macro', '')] self._xml_start_tag('xdr:cxnSp', attributes) # Write the xdr:nvCxnSpPr element. self._write_nv_cxn_sp_pr(index, shape) # Write the xdr:spPr element. self._write_xdr_sp_pr(index, col_absolute, row_absolute, width, height, shape) self._xml_end_tag('xdr:cxnSp') else: # Add attribute for shapes. attributes = [('macro', ''), ('textlink', shape.textlink)] self._xml_start_tag('xdr:sp', attributes) # Write the xdr:nvSpPr element. self._write_nv_sp_pr(index, shape, url_rel_index, tip) # Write the xdr:spPr element. self._write_xdr_sp_pr(index, col_absolute, row_absolute, width, height, shape) # Write the xdr:style element. self._write_style() # Write the xdr:txBody element. if shape.text is not None: self._write_tx_body(col_absolute, row_absolute, width, height, shape) self._xml_end_tag('xdr:sp') def _write_nv_cxn_sp_pr(self, index, shape): # Write the <xdr:nvCxnSpPr> element. self._xml_start_tag('xdr:nvCxnSpPr') name = shape.name + ' ' + str(index) if name is not None: self._write_c_nv_pr(index, name, None, None, None) self._xml_start_tag('xdr:cNvCxnSpPr') attributes = [('noChangeShapeType', '1')] self._xml_empty_tag('a:cxnSpLocks', attributes) if shape.start: attributes = [('id', shape.start), ('idx', shape.start_index)] self._xml_empty_tag('a:stCxn', attributes) if shape.end: attributes = [('id', shape.end), ('idx', shape.end_index)] self._xml_empty_tag('a:endCxn', attributes) self._xml_end_tag('xdr:cNvCxnSpPr') self._xml_end_tag('xdr:nvCxnSpPr') def _write_nv_sp_pr(self, index, shape, url_rel_index, tip): # Write the <xdr:NvSpPr> element. attributes = [] self._xml_start_tag('xdr:nvSpPr') name = shape.name + ' ' + str(index) self._write_c_nv_pr(index + 1, name, None, url_rel_index, tip) if shape.name == 'TextBox': attributes = [('txBox', 1)] self._xml_empty_tag('xdr:cNvSpPr', attributes) self._xml_end_tag('xdr:nvSpPr') def _write_pic(self, index, rel_index, col_absolute, row_absolute, width, height, shape, description, url_rel_index, tip): # Write the <xdr:pic> element. self._xml_start_tag('xdr:pic') # Write the xdr:nvPicPr element. self._write_nv_pic_pr(index, rel_index, description, url_rel_index, tip) # Write the xdr:blipFill element. self._write_blip_fill(rel_index) # Write the xdr:spPr element. self._write_sp_pr(col_absolute, row_absolute, width, height, shape) self._xml_end_tag('xdr:pic') def _write_nv_pic_pr(self, index, rel_index, description, url_rel_index, tip): # Write the <xdr:nvPicPr> element. self._xml_start_tag('xdr:nvPicPr') # Write the xdr:cNvPr element. self._write_c_nv_pr(index + 1, 'Picture ' + str(index), description, url_rel_index, tip) # Write the xdr:cNvPicPr element. self._write_c_nv_pic_pr() self._xml_end_tag('xdr:nvPicPr') def _write_c_nv_pic_pr(self): # Write the <xdr:cNvPicPr> element. self._xml_start_tag('xdr:cNvPicPr') # Write the a:picLocks element. self._write_a_pic_locks() self._xml_end_tag('xdr:cNvPicPr') def _write_a_pic_locks(self): # Write the <a:picLocks> element. attributes = [('noChangeAspect', 1)] self._xml_empty_tag('a:picLocks', attributes) def _write_blip_fill(self, index): # Write the <xdr:blipFill> element. self._xml_start_tag('xdr:blipFill') # Write the a:blip element. self._write_a_blip(index) # Write the a:stretch element. self._write_a_stretch() self._xml_end_tag('xdr:blipFill') def _write_a_blip(self, index): # Write the <a:blip> element. schema = 'http://schemas.openxmlformats.org/officeDocument/' xmlns_r = schema + '2006/relationships' r_embed = 'rId' + str(index) attributes = [ ('xmlns:r', xmlns_r), ('r:embed', r_embed)] self._xml_empty_tag('a:blip', attributes) def _write_a_stretch(self): # Write the <a:stretch> element. self._xml_start_tag('a:stretch') # Write the a:fillRect element. self._write_a_fill_rect() self._xml_end_tag('a:stretch') def _write_a_fill_rect(self): # Write the <a:fillRect> element. self._xml_empty_tag('a:fillRect') def _write_sp_pr(self, col_absolute, row_absolute, width, height, shape=None): # Write the <xdr:spPr> element, for charts. self._xml_start_tag('xdr:spPr') # Write the a:xfrm element. self._write_a_xfrm(col_absolute, row_absolute, width, height) # Write the a:prstGeom element. self._write_a_prst_geom(shape) self._xml_end_tag('xdr:spPr') def _write_xdr_sp_pr(self, index, col_absolute, row_absolute, width, height, shape): # Write the <xdr:spPr> element for shapes. attributes = [] # attributes = [('bwMode', 'auto')] self._xml_start_tag('xdr:spPr', attributes) # Write the a:xfrm element. self._write_a_xfrm(col_absolute, row_absolute, width, height, shape) # Write the a:prstGeom element. self._write_a_prst_geom(shape) if shape.fill: if not shape.fill['defined']: # Write the a:solidFill element. self._write_a_solid_fill_scheme('lt1') elif 'none' in shape.fill: # Write the a:noFill element. self._xml_empty_tag('a:noFill') elif 'color' in shape.fill: # Write the a:solidFill element. self._write_a_solid_fill(get_rgb_color(shape.fill['color'])) if shape.gradient: # Write the a:gradFill element. self._write_a_grad_fill(shape.gradient) # Write the a:ln element. self._write_a_ln(shape.line) self._xml_end_tag('xdr:spPr') def _write_a_xfrm(self, col_absolute, row_absolute, width, height, shape=None): # Write the <a:xfrm> element. attributes = [] if shape: if shape.rotation: rotation = shape.rotation rotation *= 60000 attributes.append(('rot', rotation)) if shape.flip_h: attributes.append(('flipH', 1)) if shape.flip_v: attributes.append(('flipV', 1)) self._xml_start_tag('a:xfrm', attributes) # Write the a:off element. self._write_a_off(col_absolute, row_absolute) # Write the a:ext element. self._write_a_ext(width, height) self._xml_end_tag('a:xfrm') def _write_a_off(self, x, y): # Write the <a:off> element. attributes = [ ('x', x), ('y', y), ] self._xml_empty_tag('a:off', attributes) def _write_a_ext(self, cx, cy): # Write the <a:ext> element. attributes = [ ('cx', cx), ('cy', cy), ] self._xml_empty_tag('a:ext', attributes) def _write_a_prst_geom(self, shape=None): # Write the <a:prstGeom> element. attributes = [('prst', 'rect')] self._xml_start_tag('a:prstGeom', attributes) # Write the a:avLst element. self._write_a_av_lst(shape) self._xml_end_tag('a:prstGeom') def _write_a_av_lst(self, shape=None): # Write the <a:avLst> element. adjustments = [] if shape and shape.adjustments: adjustments = shape.adjustments if adjustments: self._xml_start_tag('a:avLst') i = 0 for adj in adjustments: i += 1 # Only connectors have multiple adjustments. if shape.connect: suffix = i else: suffix = '' # Scale Adjustments: 100,000 = 100%. adj_int = str(int(adj * 1000)) attributes = [('name', 'adj' + suffix), ('fmla', 'val' + adj_int)] self._xml_empty_tag('a:gd', attributes) self._xml_end_tag('a:avLst') else: self._xml_empty_tag('a:avLst') def _write_a_solid_fill(self, rgb): # Write the <a:solidFill> element. if rgb is None: rgb = 'FFFFFF' self._xml_start_tag('a:solidFill') # Write the a:srgbClr element. self._write_a_srgb_clr(rgb) self._xml_end_tag('a:solidFill') def _write_a_solid_fill_scheme(self, color, shade=None): attributes = [('val', color)] self._xml_start_tag('a:solidFill') if shade: self._xml_start_tag('a:schemeClr', attributes) self._write_a_shade(shade) self._xml_end_tag('a:schemeClr') else: self._xml_empty_tag('a:schemeClr', attributes) self._xml_end_tag('a:solidFill') def _write_a_ln(self, line): # Write the <a:ln> element. width = line.get('width', 0.75) # Round width to nearest 0.25, like Excel. width = int((width + 0.125) * 4) / 4.0 # Convert to internal units. width = int(0.5 + (12700 * width)) attributes = [ ('w', width), ('cmpd', 'sng') ] self._xml_start_tag('a:ln', attributes) if 'none' in line: # Write the a:noFill element. self._xml_empty_tag('a:noFill') elif 'color' in line: # Write the a:solidFill element. self._write_a_solid_fill(get_rgb_color(line['color'])) else: # Write the a:solidFill element. self._write_a_solid_fill_scheme('lt1', '50000') # Write the line/dash type. line_type = line.get('dash_type') if line_type: # Write the a:prstDash element. self._write_a_prst_dash(line_type) self._xml_end_tag('a:ln') def _write_tx_body(self, col_absolute, row_absolute, width, height, shape): # Write the <xdr:txBody> element. attributes = [] if shape.text_rotation != 0: if shape.text_rotation == 90: attributes.append(('vert', 'vert270')) if shape.text_rotation == -90: attributes.append(('vert', 'vert')) if shape.text_rotation == 270: attributes.append(('vert', 'wordArtVert')) if shape.text_rotation == 271: attributes.append(('vert', 'eaVert')) attributes.append(('wrap', 'square')) attributes.append(('rtlCol', "0")) if not shape.align['defined']: attributes.append(('anchor', 't')) else: if 'vertical' in shape.align: align = shape.align['vertical'] if align == 'top': attributes.append(('anchor', 't')) elif align == 'middle': attributes.append(('anchor', 'ctr')) elif align == 'bottom': attributes.append(('anchor', 'b')) else: attributes.append(('anchor', 't')) if 'horizontal' in shape.align: align = shape.align['horizontal'] if align == 'center': attributes.append(('anchorCtr', '1')) else: attributes.append(('anchorCtr', '0')) self._xml_start_tag('xdr:txBody') self._xml_empty_tag('a:bodyPr', attributes) self._xml_empty_tag('a:lstStyle') lines = shape.text.split('\n') # Set the font attributes. font = shape.font style_attrs = Shape._get_font_style_attributes(font) latin_attrs = Shape._get_font_latin_attributes(font) style_attrs.insert(0, ('lang', font['lang'])) if shape.textlink != '': attributes = [ ('id', '{B8ADDEFE-BF52-4FD4-8C5D-6B85EF6FF707}'), ('type', 'TxLink')] self._xml_start_tag('a:p') self._xml_start_tag('a:fld', attributes) self._write_font_run(font, style_attrs, latin_attrs, 'a:rPr') self._xml_data_element('a:t', shape.text) self._xml_end_tag('a:fld') self._write_font_run(font, style_attrs, latin_attrs, 'a:endParaRPr') self._xml_end_tag('a:p') else: for line in lines: self._xml_start_tag('a:p') if line == '': self._write_font_run(font, style_attrs, latin_attrs, 'a:endParaRPr') self._xml_end_tag('a:p') continue self._xml_start_tag('a:r') self._write_font_run(font, style_attrs, latin_attrs, 'a:rPr') self._xml_data_element('a:t', line) self._xml_end_tag('a:r') self._xml_end_tag('a:p') self._xml_end_tag('xdr:txBody') def _write_font_run(self, font, style_attrs, latin_attrs, run_type): # Write a:rPr or a:endParaRPr. if font.get('color') is not None: has_color = True else: has_color = False if latin_attrs or has_color: self._xml_start_tag(run_type, style_attrs) if has_color: self._write_a_solid_fill(get_rgb_color(font['color'])) if latin_attrs: self._write_a_latin(latin_attrs) self._write_a_cs(latin_attrs) self._xml_end_tag(run_type) else: self._xml_empty_tag(run_type, style_attrs) def _write_style(self): # Write the <xdr:style> element. self._xml_start_tag('xdr:style') # Write the a:lnRef element. self._write_a_ln_ref() # Write the a:fillRef element. self._write_a_fill_ref() # Write the a:effectRef element. self._write_a_effect_ref() # Write the a:fontRef element. self._write_a_font_ref() self._xml_end_tag('xdr:style') def _write_a_ln_ref(self): # Write the <a:lnRef> element. attributes = [('idx', '0')] self._xml_start_tag('a:lnRef', attributes) # Write the a:scrgbClr element. self._write_a_scrgb_clr() self._xml_end_tag('a:lnRef') def _write_a_fill_ref(self): # Write the <a:fillRef> element. attributes = [('idx', '0')] self._xml_start_tag('a:fillRef', attributes) # Write the a:scrgbClr element. self._write_a_scrgb_clr() self._xml_end_tag('a:fillRef') def _write_a_effect_ref(self): # Write the <a:effectRef> element. attributes = [('idx', '0')] self._xml_start_tag('a:effectRef', attributes) # Write the a:scrgbClr element. self._write_a_scrgb_clr() self._xml_end_tag('a:effectRef') def _write_a_scrgb_clr(self): # Write the <a:scrgbClr> element. attributes = [ ('r', '0'), ('g', '0'), ('b', '0'), ] self._xml_empty_tag('a:scrgbClr', attributes) def _write_a_font_ref(self): # Write the <a:fontRef> element. attributes = [('idx', 'minor')] self._xml_start_tag('a:fontRef', attributes) # Write the a:schemeClr element. self._write_a_scheme_clr('dk1') self._xml_end_tag('a:fontRef') def _write_a_scheme_clr(self, val): # Write the <a:schemeClr> element. attributes = [('val', val)] self._xml_empty_tag('a:schemeClr', attributes) def _write_a_shade(self, shade): # Write the <a:shade> element. attributes = [('val', shade)] self._xml_empty_tag('a:shade', attributes) def _write_a_prst_dash(self, val): # Write the <a:prstDash> element. attributes = [('val', val)] self._xml_empty_tag('a:prstDash', attributes) def _write_a_grad_fill(self, gradient): # Write the <a:gradFill> element. attributes = [('flip', 'none'), ('rotWithShape', '1')] if gradient['type'] == 'linear': attributes = [] self._xml_start_tag('a:gradFill', attributes) # Write the a:gsLst element. self._write_a_gs_lst(gradient) if gradient['type'] == 'linear': # Write the a:lin element. self._write_a_lin(gradient['angle']) else: # Write the a:path element. self._write_a_path(gradient['type']) # Write the a:tileRect element. self._write_a_tile_rect(gradient['type']) self._xml_end_tag('a:gradFill') def _write_a_gs_lst(self, gradient): # Write the <a:gsLst> element. positions = gradient['positions'] colors = gradient['colors'] self._xml_start_tag('a:gsLst') for i in range(len(colors)): pos = int(positions[i] * 1000) attributes = [('pos', pos)] self._xml_start_tag('a:gs', attributes) # Write the a:srgbClr element. # TODO: Wait for a feature request to support transparency. color = get_rgb_color(colors[i]) self._write_a_srgb_clr(color) self._xml_end_tag('a:gs') self._xml_end_tag('a:gsLst') def _write_a_lin(self, angle): # Write the <a:lin> element. angle = int(60000 * angle) attributes = [ ('ang', angle), ('scaled', '0'), ] self._xml_empty_tag('a:lin', attributes) def _write_a_path(self, gradient_type): # Write the <a:path> element. attributes = [('path', gradient_type)] self._xml_start_tag('a:path', attributes) # Write the a:fillToRect element. self._write_a_fill_to_rect(gradient_type) self._xml_end_tag('a:path') def _write_a_fill_to_rect(self, gradient_type): # Write the <a:fillToRect> element. if gradient_type == 'shape': attributes = [ ('l', '50000'), ('t', '50000'), ('r', '50000'), ('b', '50000'), ] else: attributes = [ ('l', '100000'), ('t', '100000'), ] self._xml_empty_tag('a:fillToRect', attributes) def _write_a_tile_rect(self, gradient_type): # Write the <a:tileRect> element. if gradient_type == 'shape': attributes = [] else: attributes = [ ('r', '-100000'), ('b', '-100000'), ] self._xml_empty_tag('a:tileRect', attributes) def _write_a_srgb_clr(self, val): # Write the <a:srgbClr> element. attributes = [('val', val)] self._xml_empty_tag('a:srgbClr', attributes) def _write_a_latin(self, attributes): # Write the <a:latin> element. self._xml_empty_tag('a:latin', attributes) def _write_a_cs(self, attributes): # Write the <a:latin> element. self._xml_empty_tag('a:cs', attributes)