presentation: initial work for presentations

_examples/presentation/simple/main.go

@@ -7,7 +7,8 @@ import (
 
 func main() {
 	ppt := presentation.New()
-	ppt.AddSlide()
+	slide := ppt.AddSlide()
+	_ = slide
 
 	ppt.SaveToFile("simple.pptx")
 }

_examples/presentation/use-template/main.go

@@ -0,0 +1,74 @@
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"baliance.com/gooxml/color"
+	"baliance.com/gooxml/schema/soo/pml"
+
+	"baliance.com/gooxml/presentation"
+)
+
+func main() {
+	ppt, err := presentation.OpenTemplate("template.pptx")
+	for i, layout := range ppt.SlideLayouts() {
+		fmt.Println(i, " LL ", layout.Name(), "/", layout.Type())
+	}
+
+	// remove any existing slides
+	for _, s := range ppt.Slides() {
+		ppt.RemoveSlide(s)
+	}
+	l, err := ppt.GetLayoutByName("Title and Caption")
+	if err != nil {
+		log.Fatalf("error retrieving layout: %s", err)
+	}
+	sld, err := ppt.AddDefaultSlideWithLayout(l)
+	if err != nil {
+		log.Fatalf("error adding slide: %s", err)
+	}
+
+	ph, _ := sld.GetPlaceholder(pml.ST_PlaceholderTypeTitle)
+	ph.SetText("Using gooxml")
+	ph, _ = sld.GetPlaceholder(pml.ST_PlaceholderTypeBody)
+	ph.SetText("Created with baliance.com/gooxml/")
+
+	tac, _ := ppt.GetLayoutByName("Title and Content")
+
+	sld, err = ppt.AddDefaultSlideWithLayout(tac)
+	if err != nil {
+		log.Fatalf("error adding slide: %s", err)
+	}
+
+	ph, _ = sld.GetPlaceholder(pml.ST_PlaceholderTypeTitle)
+	ph.SetText("Placeholders")
+	ph, _ = sld.GetPlaceholderByIndex(1)
+	ph.ClearAll()
+	para := ph.AddParagraph()
+
+	run := para.AddRun()
+	run.SetText("Adding paragraphs can create bullets depending on the placeholder")
+	para.AddBreak()
+	run = para.AddRun()
+	run.SetText("Line breaks work as expected within a paragraph")
+
+	for i := 1; i < 5; i++ {
+		para = ph.AddParagraph()
+		para.Properties().SetLevel(int32(i))
+		run = para.AddRun()
+		run.SetText("Level controls indentation")
+	}
+
+	para = ph.AddParagraph()
+	run = para.AddRun()
+	run.SetText("One Last Paragraph in a different font")
+	run.Properties().SetSize(20)
+	run.Properties().SetFont("Courier")
+	run.Properties().SetSolidFill(color.Red)
+
+	if err != nil {
+		log.Fatalf("error opening template: %s", err)
+	}
+	ppt.SaveToFile("mod.pptx")
+}

common/contenttypes.go

@@ -79,3 +79,16 @@ func (c ContentTypes) EnsureOverride(path, contentType string) {
 	// Didn't find a matching override for the target path, so add one
 	c.AddOverride(path, contentType)
 }
+
+// RemoveOverride removes an override given a path.
+func (c ContentTypes) RemoveOverride(path string) {
+	if !strings.HasPrefix(path, "/") {
+		path = "/" + path
+	}
+	for i, ovr := range c.x.Override {
+		if ovr.PartNameAttr == path {
+			copy(c.x.Override[i:], c.x.Override[i+1:])
+			c.x.Override = c.x.Override[0 : len(c.x.Override)-1]
+		}
+	}
+}

document/document.go

@@ -158,7 +158,6 @@ func (d *Document) Save(w io.Writer) error {
 	if err := zippkg.MarshalXMLByType(z, dt, gooxml.CorePropertiesType, d.CoreProperties.X()); err != nil {
 		return err
 	}
-
 	if d.Thumbnail != nil {
 		tn, err := z.Create("docProps/thumbnail.jpeg")
 		if err != nil {

drawing/paragraph.go

@@ -0,0 +1,49 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package drawing
+
+import (
+	"baliance.com/gooxml/schema/soo/dml"
+)
+
+// MakeParagraph constructs a new paragraph wrapper.
+func MakeParagraph(x *dml.CT_TextParagraph) Paragraph {
+	return Paragraph{x}
+}
+
+// Paragraph is a paragraph within a document.
+type Paragraph struct {
+	x *dml.CT_TextParagraph
+}
+
+// X returns the inner wrapped XML type.
+func (p Paragraph) X() *dml.CT_TextParagraph {
+	return p.x
+}
+
+// AddRun adds a new run to a paragraph.
+func (p Paragraph) AddRun() Run {
+	r := MakeRun(dml.NewEG_TextRun())
+	p.x.EG_TextRun = append(p.x.EG_TextRun, r.X())
+	return r
+}
+
+// AddBreak adds a new line break to a paragraph.
+func (p Paragraph) AddBreak() {
+	r := dml.NewEG_TextRun()
+	r.Br = dml.NewCT_TextLineBreak()
+	p.x.EG_TextRun = append(p.x.EG_TextRun, r)
+}
+
+// Properties returns the paragraph properties.
+func (p Paragraph) Properties() ParagraphProperties {
+	if p.x.PPr == nil {
+		p.x.PPr = dml.NewCT_TextParagraphProperties()
+	}
+	return MakeParagraphProperties(p.x.PPr)
+}

drawing/paragraphproperties.go

@@ -7,12 +7,32 @@
 
 package drawing
 
-import "baliance.com/gooxml/schema/soo/dml"
+import (
+	"baliance.com/gooxml"
+	"baliance.com/gooxml/schema/soo/dml"
+)
 
+// ParagraphProperties allows controlling paragraph properties.
 type ParagraphProperties struct {
 	x *dml.CT_TextParagraphProperties
 }
 
+// MakeParagraphProperties constructs a new ParagraphProperties wrapper.
 func MakeParagraphProperties(x *dml.CT_TextParagraphProperties) ParagraphProperties {
 	return ParagraphProperties{x}
 }
+
+// SetLevel sets the level of indentation of a paragraph.
+func (p ParagraphProperties) SetLevel(idx int32) {
+	p.x.LvlAttr = gooxml.Int32(idx)
+}
+
+// SetNumbered controls if bullets are numbered or not.
+func (p ParagraphProperties) SetNumbered(scheme dml.ST_TextAutonumberScheme) {
+	if scheme == dml.ST_TextAutonumberSchemeUnset {
+		p.x.BuAutoNum = nil
+	} else {
+		p.x.BuAutoNum = dml.NewCT_TextAutonumberBullet()
+		p.x.BuAutoNum.TypeAttr = scheme
+	}
+}

drawing/run.go

@@ -0,0 +1,44 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package drawing
+
+import "baliance.com/gooxml/schema/soo/dml"
+
+// MakeRun constructs a new Run wrapper.
+func MakeRun(x *dml.EG_TextRun) Run {
+	return Run{x}
+}
+
+// Run is a run within a paragraph.
+type Run struct {
+	x *dml.EG_TextRun
+}
+
+// X returns the inner wrapped XML type.
+func (r Run) X() *dml.EG_TextRun {
+	return r.x
+}
+
+// SetText sets the run's text contents.
+func (r Run) SetText(s string) {
+	r.x.Br = nil
+	r.x.Fld = nil
+	r.x.R = dml.NewCT_RegularTextRun()
+	r.x.R.T = s
+}
+
+// Properties returns the run's properties.
+func (r Run) Properties() RunProperties {
+	if r.x.R == nil {
+		r.x.R = dml.NewCT_RegularTextRun()
+	}
+	if r.x.R.RPr == nil {
+		r.x.R.RPr = dml.NewCT_TextCharacterProperties()
+	}
+	return RunProperties{r.x.R.RPr}
+}

drawing/runproperties.go

@@ -14,20 +14,27 @@ import (
 	"baliance.com/gooxml/schema/soo/dml"
 )
 
+// RunProperties controls the run properties.
 type RunProperties struct {
 	x *dml.CT_TextCharacterProperties
 }
 
+// MakeRunProperties constructs a new RunProperties wrapper.
 func MakeRunProperties(x *dml.CT_TextCharacterProperties) RunProperties {
 	return RunProperties{x}
 }
+
+// SetSize sets the font size of the run text
 func (r RunProperties) SetSize(sz measurement.Distance) {
 	r.x.SzAttr = gooxml.Int32(int32(sz / measurement.HundredthPoint))
 }
 
+// SetBold controls the bolding of a run.
 func (r RunProperties) SetBold(b bool) {
 	r.x.BAttr = gooxml.Bool(b)
 }
+
+// SetSolidFill controls the text color of a run.
 func (r RunProperties) SetSolidFill(c color.Color) {
 	r.x.NoFill = nil
 	r.x.BlipFill = nil
@@ -38,6 +45,8 @@ func (r RunProperties) SetSolidFill(c color.Color) {
 	r.x.SolidFill.SrgbClr = dml.NewCT_SRgbColor()
 	r.x.SolidFill.SrgbClr.ValAttr = *c.AsRGBString()
 }
+
+// SetFont controls the font of a run.
 func (r RunProperties) SetFont(s string) {
 	r.x.Latin = dml.NewCT_TextFont()
 	r.x.Latin.TypefaceAttr = s

filenames.go

@@ -81,6 +81,8 @@ func AbsoluteFilename(dt DocType, typ string, index int) string {
 			return "xl/workbook.xml"
 		case DocTypeDocument:
 			return "word/document.xml"
+		case DocTypePresentation:
+			return "ppt/presentation.xml"
 		default:
 			Log("unsupported type %s pair and %v", typ, dt)
 		}
@@ -91,6 +93,8 @@ func AbsoluteFilename(dt DocType, typ string, index int) string {
 			return fmt.Sprintf("xl/theme/theme%d.xml", index)
 		case DocTypeDocument:
 			return fmt.Sprintf("word/theme/theme%d.xml", index)
+		case DocTypePresentation:
+			return fmt.Sprintf("ppt/theme/theme%d.xml", index)
 		default:
 			Log("unsupported type %s pair and %v", typ, dt)
 		}
@@ -101,6 +105,8 @@ func AbsoluteFilename(dt DocType, typ string, index int) string {
 			return "xl/styles.xml"
 		case DocTypeDocument:
 			return "word/styles.xml"
+		case DocTypePresentation:
+			return "ppt/styles.xml"
 		default:
 			Log("unsupported type %s pair and %v", typ, dt)
 		}
@@ -145,6 +151,8 @@ func AbsoluteFilename(dt DocType, typ string, index int) string {
 			return fmt.Sprintf("word/media/image%d.png", index)
 		case DocTypeSpreadsheet:
 			return fmt.Sprintf("xl/media/image%d.png", index)
+		case DocTypePresentation:
+			return fmt.Sprintf("ppt/media/image%d.png", index)
 		default:
 			Log("unsupported type %s pair and %v", typ, dt)
 		}
@@ -154,7 +162,7 @@ func AbsoluteFilename(dt DocType, typ string, index int) string {
 	case SharedStingsType, SharedStringsContentType:
 		return "xl/sharedStrings.xml"
 
-		// WML
+	// WML
 	case FontTableType:
 		return "word/fontTable.xml"
 	case EndNotesType:
@@ -172,6 +180,14 @@ func AbsoluteFilename(dt DocType, typ string, index int) string {
 	case FooterType:
 		return fmt.Sprintf("word/footer%d.xml", index)
 
+	// PML
+	case SlideType:
+		return fmt.Sprintf("ppt/slides/slide%d.xml", index)
+	case SlideLayoutType:
+		return fmt.Sprintf("ppt/slideLayouts/slideLayout%d.xml", index)
+	case SlideMasterType:
+		return fmt.Sprintf("ppt/slideMasters/slideMaster%d.xml", index)
+
 	default:
 		Log("unsupported type %s", typ)
 	}

filenames_test.go

@@ -69,3 +69,28 @@ func TestSMLFilenames(t *testing.T) {
 		}
 	}
 }
+
+func TestPMLFilenames(t *testing.T) {
+	td := []struct {
+		Idx    int
+		Type   string
+		ExpAbs string
+	}{
+		{0, gooxml.CorePropertiesType, "docProps/core.xml"},
+		{0, gooxml.ExtendedPropertiesType, "docProps/app.xml"},
+		{0, gooxml.ThumbnailType, "docProps/thumbnail.jpeg"},
+		{0, gooxml.StylesType, "ppt/styles.xml"},
+
+		{0, gooxml.OfficeDocumentType, "ppt/presentation.xml"},
+		{4, gooxml.SlideType, "ppt/slides/slide4.xml"},
+		{5, gooxml.SlideLayoutType, "ppt/slideLayouts/slideLayout5.xml"},
+		{6, gooxml.SlideMasterType, "ppt/slideMasters/slideMaster6.xml"},
+		{7, gooxml.ThemeType, "ppt/theme/theme7.xml"},
+	}
+	for _, tc := range td {
+		abs := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, tc.Type, tc.Idx)
+		if abs != tc.ExpAbs {
+			t.Errorf("expected absolute filename of %s for document %s/%d, got %s", tc.ExpAbs, tc.Type, tc.Idx, abs)
+		}
+	}
+}

log.go

@@ -7,12 +7,14 @@
 
 package gooxml
 
-import "log"
+import (
+	"log"
+)
 
 // Log is used to log content from within the library.  The intent is to use
 // logging sparingly, preferring to return an error.  At the very least this
 // allows redirecting logs to somewhere more appropriate than stdout.
-var Log func(string, ...interface{}) = log.Printf
+var Log = log.Printf
 
 // DisableLogging sets the Log function to a no-op so that any log messages are
 // silently discarded.

presentation/open.go

@@ -0,0 +1,36 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package presentation
+
+import (
+	"fmt"
+	"os"
+)
+
+func OpenTemplate(fn string) (*Presentation, error) {
+	p, err := Open(fn)
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
+}
+
+// Open opens and reads a document from a file (.docx).
+func Open(filename string) (*Presentation, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, fmt.Errorf("error opening %s: %s", filename, err)
+	}
+	defer f.Close()
+	fi, err := os.Stat(filename)
+	if err != nil {
+		return nil, fmt.Errorf("error opening %s: %s", filename, err)
+	}
+	_ = fi
+	return Read(f, fi.Size())
+}

presentation/placeholder.go

@@ -0,0 +1,104 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package presentation
+
+import (
+	"errors"
+
+	"baliance.com/gooxml"
+	"baliance.com/gooxml/drawing"
+	"baliance.com/gooxml/schema/soo/dml"
+	"baliance.com/gooxml/schema/soo/pml"
+)
+
+// PlaceHolder is a place holder from a slide.
+type PlaceHolder struct {
+	x   *pml.CT_Shape
+	sld *pml.Sld
+}
+
+// X returns the inner wrapped XML type.
+func (s PlaceHolder) X() *pml.CT_Shape {
+	return s.x
+}
+
+// Type returns the placeholder type
+func (s PlaceHolder) Type() pml.ST_PlaceholderType {
+	return s.x.NvSpPr.NvPr.Ph.TypeAttr
+}
+
+// Index returns the placeholder index
+func (s PlaceHolder) Index() uint32 {
+	if s.x.NvSpPr.NvPr.Ph.IdxAttr == nil {
+		return 0
+	}
+	return *s.x.NvSpPr.NvPr.Ph.IdxAttr
+}
+
+// ClearAll completely clears a placeholder. To be useable, at least one
+// paragraph must be added after ClearAll via AddParagraph.
+func (s PlaceHolder) ClearAll() {
+	s.x.SpPr = dml.NewCT_ShapeProperties()
+	s.x.TxBody = dml.NewCT_TextBody()
+	s.x.TxBody.LstStyle = dml.NewCT_TextListStyle()
+}
+
+// Clear clears the placeholder contents and adds a single empty paragraph.  The
+// empty paragrah is required by PowerPoint or it will report the file as being
+// invalid.
+func (s PlaceHolder) Clear() {
+	s.ClearAll()
+	para := dml.NewCT_TextParagraph()
+	s.x.TxBody.P = []*dml.CT_TextParagraph{para}
+	para.EndParaRPr = dml.NewCT_TextCharacterProperties()
+	para.EndParaRPr.LangAttr = gooxml.String("en-US")
+}
+
+func (s PlaceHolder) Remove() error {
+	for i, spChc := range s.sld.CSld.SpTree.Choice {
+		for _, sp := range spChc.Sp {
+			if sp == s.x {
+				copy(s.sld.CSld.SpTree.Choice[i:], s.sld.CSld.SpTree.Choice[i+1:])
+				s.sld.CSld.SpTree.Choice = s.sld.CSld.SpTree.Choice[0 : len(s.sld.CSld.SpTree.Choice)-1]
+				return nil
+			}
+		}
+	}
+	return errors.New("placeholder not found in slide")
+}
+
+// SetText sets the text of a placeholder for the initial paragraph. This is a
+// shortcut method that is useful for things like titles which only contain a
+// single paragraph.
+func (s PlaceHolder) SetText(text string) {
+	s.Clear()
+	tr := dml.NewEG_TextRun()
+	tr.R = dml.NewCT_RegularTextRun()
+	tr.R.T = text
+	if len(s.x.TxBody.P) == 0 {
+		s.x.TxBody.P = append(s.x.TxBody.P, dml.NewCT_TextParagraph())
+	}
+	s.x.TxBody.P[0].EG_TextRun = nil
+	s.x.TxBody.P[0].EG_TextRun = append(s.x.TxBody.P[0].EG_TextRun, tr)
+}
+
+// Paragraphs returns the paragraphs defined in the placeholder.
+func (s PlaceHolder) Paragraphs() []drawing.Paragraph {
+	ret := []drawing.Paragraph{}
+	for _, p := range s.x.TxBody.P {
+		ret = append(ret, drawing.MakeParagraph(p))
+	}
+	return ret
+}
+
+// AddParagraph adds a new paragraph to a placeholder.
+func (s PlaceHolder) AddParagraph() drawing.Paragraph {
+	p := drawing.MakeParagraph(dml.NewCT_TextParagraph())
+	s.x.TxBody.P = append(s.x.TxBody.P, p.X())
+	return p
+}

presentation/presentation.go

@@ -9,15 +9,23 @@ package presentation
 
 import (
 	"archive/zip"
+	"bytes"
+	"encoding/xml"
+	"errors"
 	"fmt"
+	"image"
+	"image/jpeg"
 	"io"
+	"log"
 	"os"
+	"path/filepath"
 
 	"baliance.com/gooxml"
 	"baliance.com/gooxml/common"
 	"baliance.com/gooxml/measurement"
 	"baliance.com/gooxml/schema/soo/dml"
 	"baliance.com/gooxml/schema/soo/ofc/sharedTypes"
+	"baliance.com/gooxml/schema/soo/pkg/relationships"
 	"baliance.com/gooxml/schema/soo/pml"
 	"baliance.com/gooxml/zippkg"
 )
@@ -34,6 +42,7 @@ type Presentation struct {
 	layouts    []*pml.SldLayout
 	layoutRels []common.Relationships
 	themes     []*dml.Theme
+	themeRels  []common.Relationships
 }
 
 // New initializes and reurns a new presentation
@@ -73,8 +82,11 @@ func New() *Presentation {
 
 	p.masters = append(p.masters, m)
 
-	p.ContentTypes.AddOverride("/ppt/slideMasters/slideMaster1.xml", gooxml.SlideMasterContentType)
-	mrelID := p.prels.AddRelationship("slideMasters/slideMaster1.xml", gooxml.SlideMasterRelationshipType)
+	smFn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideMasterType, 1)
+	p.ContentTypes.AddOverride(smFn, gooxml.SlideMasterContentType)
+
+	mrelID := p.prels.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.OfficeDocumentType,
+		1, gooxml.SlideMasterType)
 	smid := pml.NewCT_SlideMasterIdListEntry()
 	smid.IdAttr = gooxml.Uint32(2147483648)
 	smid.RIdAttr = mrelID.ID()
@@ -83,9 +95,10 @@ func New() *Presentation {
 	p.masterRels = append(p.masterRels, mrel)
 
 	ls := pml.NewSldLayout()
-	lrid := mrel.AddRelationship("../slideLayouts/slideLayout1.xml", gooxml.SlideLayoutType)
-	p.ContentTypes.AddOverride("/ppt/slideLayouts/slideLayout1.xml", gooxml.SlideLayoutContentType)
-	mrel.AddRelationship("../theme/theme1.xml", gooxml.ThemeType)
+	lrid := mrel.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.SlideMasterType, 1, gooxml.SlideLayoutType)
+	slfn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideLayoutType, 1)
+	p.ContentTypes.AddOverride(slfn, gooxml.SlideLayoutContentType)
+	mrel.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.SlideMasterType, 1, gooxml.ThemeType)
 	p.layouts = append(p.layouts, ls)
 
 	m.SldLayoutIdLst = pml.NewCT_SlideLayoutIdList()
@@ -96,7 +109,7 @@ func New() *Presentation {
 
 	lrel := common.NewRelationships()
 	p.layoutRels = append(p.layoutRels, lrel)
-	lrel.AddRelationship("../slideMasters/slideMaster1.xml", gooxml.SlideMasterRelationshipType)
+	lrel.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.SlideType, 1, gooxml.SlideMasterType)
 	p.x.NotesSz.CxAttr = 6858000
 	p.x.NotesSz.CyAttr = 9144000
 
@@ -204,8 +217,13 @@ func New() *Presentation {
 		fp)
 
 	p.themes = append(p.themes, thm)
-	p.ContentTypes.AddOverride("/ppt/theme/theme1.xml", gooxml.ThemeContentType)
-	p.prels.AddRelationship("theme/theme1.xml", gooxml.ThemeType)
+	themeFn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.ThemeType, 1)
+	p.ContentTypes.AddOverride(themeFn, gooxml.ThemeContentType)
+	p.prels.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.OfficeDocumentType, 1, gooxml.ThemeType)
+
+	thmRel := common.NewRelationships()
+	p.themeRels = append(p.themeRels, thmRel)
+
 	return p
 }
 
@@ -214,6 +232,7 @@ func (p *Presentation) X() *pml.Presentation {
 	return p.x
 }
 
+// AddSlide adds a new slide to the presentation.
 func (p *Presentation) AddSlide() Slide {
 	sd := pml.NewCT_SlideIdListEntry()
 	sd.IdAttr = 256
@@ -231,82 +250,217 @@ func (p *Presentation) AddSlide() Slide {
 	slide.CSld.SpTree.GrpSpPr.Xfrm.ChOff = slide.CSld.SpTree.GrpSpPr.Xfrm.Off
 	slide.CSld.SpTree.GrpSpPr.Xfrm.ChExt = slide.CSld.SpTree.GrpSpPr.Xfrm.Ext
 
-	c := pml.NewCT_GroupShapeChoice()
-	slide.CSld.SpTree.Choice = append(slide.CSld.SpTree.Choice, c)
-	sp := pml.NewCT_Shape()
-	c.Sp = append(c.Sp, sp)
+	/*
+		c := pml.NewCT_GroupShapeChoice()
+		slide.CSld.SpTree.Choice = append(slide.CSld.SpTree.Choice, c)
+		sp := pml.NewCT_Shape()
+		c.Sp = append(c.Sp, sp)
 
-	sp.NvSpPr.NvPr.Ph = pml.NewCT_Placeholder()
-	sp.NvSpPr.NvPr.Ph.TypeAttr = pml.ST_PlaceholderTypeCtrTitle
+		sp.NvSpPr.NvPr.Ph = pml.NewCT_Placeholder()
+		sp.NvSpPr.NvPr.Ph.TypeAttr = pml.ST_PlaceholderTypeCtrTitle
 
-	sp.TxBody = dml.NewCT_TextBody()
-	para := dml.NewCT_TextParagraph()
-	sp.TxBody.P = append(sp.TxBody.P, para)
-
-	run := dml.NewEG_TextRun()
-	para.EG_TextRun = append(para.EG_TextRun, run)
-	run.R = dml.NewCT_RegularTextRun()
-	run.R.T = "testing 123"
+		sp.TxBody = dml.NewCT_TextBody()
+		para := dml.NewCT_TextParagraph()
+		sp.TxBody.P = append(sp.TxBody.P, para)
 
+		run := dml.NewEG_TextRun()
+		para.EG_TextRun = append(para.EG_TextRun, run)
+		run.R = dml.NewCT_RegularTextRun()
+		run.R.T = "testing 123"
+	*/
 	p.slides = append(p.slides, slide)
-	fn := fmt.Sprintf("slides/slide%d.xml", len(p.slides))
-	srelID := p.prels.AddRelationship(fn, gooxml.SlideType)
+	srelID := p.prels.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.OfficeDocumentType,
+		len(p.slides), gooxml.SlideType)
 	sd.RIdAttr = srelID.ID()
 
-	p.ContentTypes.AddOverride(fmt.Sprintf("/ppt/slides/slide%d.xml", len(p.slides)), gooxml.SlideContentType)
+	slidefn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideType, len(p.slides))
+	p.ContentTypes.AddOverride(slidefn, gooxml.SlideContentType)
 
 	srel := common.NewRelationships()
 	p.slideRels = append(p.slideRels, srel)
-	srel.AddRelationship("../slideLayouts/slideLayout1.xml", gooxml.SlideLayoutType)
+	// TODO: make the slide layout configurable
+	srel.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.SlideType,
+		len(p.layouts), gooxml.SlideLayoutType)
 
 	return Slide{sd, slide}
 }
 
+// AddSlideWithLayout adds a new slide with content copied from a layout.  Normally you should
+// use AddDefaultSlideWithLayout as it will do some post processing similar to PowerPoint to
+// clear place holder text, etc.
+func (p *Presentation) AddSlideWithLayout(l SlideLayout) (Slide, error) {
+	sd := pml.NewCT_SlideIdListEntry()
+	sd.IdAttr = 256
+	for _, id := range p.x.SldIdLst.SldId {
+		if id.IdAttr >= sd.IdAttr {
+			sd.IdAttr = id.IdAttr + 1
+		}
+	}
+	p.x.SldIdLst.SldId = append(p.x.SldIdLst.SldId, sd)
+
+	slide := pml.NewSld()
+
+	buf := bytes.Buffer{}
+	enc := xml.NewEncoder(&buf)
+	start := xml.StartElement{Name: xml.Name{Local: "slide"}}
+	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "xmlns"}, Value: "http://schemas.openxmlformats.org/presentationml/2006/main"})
+	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "xmlns:a"}, Value: "http://schemas.openxmlformats.org/drawingml/2006/main"})
+	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "xmlns:p"}, Value: "http://schemas.openxmlformats.org/presentationml/2006/main"})
+	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "xmlns:r"}, Value: "http://schemas.openxmlformats.org/officeDocument/2006/relationships"})
+	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "xmlns:sh"}, Value: "http://schemas.openxmlformats.org/officeDocument/2006/sharedTypes"})
+	start.Attr = append(start.Attr, xml.Attr{Name: xml.Name{Local: "xmlns:xml"}, Value: "http://www.w3.org/XML/1998/namespace"})
+
+	if err := l.x.CSld.MarshalXML(enc, start); err != nil {
+		return Slide{}, err
+	}
+	enc.Flush()
+
+	dec := xml.NewDecoder(&buf)
+	slide.CSld = pml.NewCT_CommonSlideData()
+	if err := dec.Decode(slide.CSld); err != nil {
+		return Slide{}, err
+	}
+
+	// clear layout name on the slide
+	slide.CSld.NameAttr = nil
+	//, chc := range slide.CSld.SpTree.Choice {
+	for i := 0; i < len(slide.CSld.SpTree.Choice); i++ {
+		chc := slide.CSld.SpTree.Choice[i]
+		for len(chc.Pic) > 0 {
+			copy(slide.CSld.SpTree.Choice[i:], slide.CSld.SpTree.Choice[i+1:])
+			slide.CSld.SpTree.Choice = slide.CSld.SpTree.Choice[0 : len(slide.CSld.SpTree.Choice)-1]
+			chc = slide.CSld.SpTree.Choice[i]
+		}
+	}
+
+	p.slides = append(p.slides, slide)
+
+	srelID := p.prels.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.OfficeDocumentType,
+		len(p.slides), gooxml.SlideType)
+	sd.RIdAttr = srelID.ID()
+
+	slidefn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideType, len(p.slides))
+	p.ContentTypes.AddOverride(slidefn, gooxml.SlideContentType)
+
+	srel := common.NewRelationships()
+	p.slideRels = append(p.slideRels, srel)
+	for i, lout := range p.layouts {
+		if lout == l.X() {
+			srel.AddAutoRelationship(gooxml.DocTypePresentation, gooxml.SlideType,
+				i+1, gooxml.SlideLayoutType)
+		}
+	}
+	csld := Slide{sd, slide}
+
+	return csld, nil
+}
+
+// AddDefaultSlideWithLayout tries to replicate what PowerPoint does when
+// inserting a slide with a new style by clearing placeholder content and removing
+// some placeholders.  Use AddSlideWithLayout if you need more control.
+func (p *Presentation) AddDefaultSlideWithLayout(l SlideLayout) (Slide, error) {
+	sld, err := p.AddSlideWithLayout(l)
+
+	for _, ph := range sld.PlaceHolders() {
+		// clear all placeholder content
+		ph.Clear()
+		// and drop some of the placeholders (footer, slide date/time, slide number)
+		switch ph.Type() {
+		case pml.ST_PlaceholderTypeFtr, pml.ST_PlaceholderTypeDt, pml.ST_PlaceholderTypeSldNum:
+			ph.Remove()
+		}
+	}
+
+	return sld, err
+}
+
 // Save writes the presentation out to a writer in the Zip package format
 func (p *Presentation) Save(w io.Writer) error {
+	if err := p.x.Validate(); err != nil {
+		log.Printf("validation error in document: %s", err)
+	}
+
+	dt := gooxml.DocTypePresentation
+
 	z := zip.NewWriter(w)
 	defer z.Close()
+	if err := zippkg.MarshalXML(z, gooxml.BaseRelsFilename, p.Rels.X()); err != nil {
+		return err
+	}
+	if err := zippkg.MarshalXMLByType(z, dt, gooxml.ExtendedPropertiesType, p.AppProperties.X()); err != nil {
+		return err
+	}
+	if err := zippkg.MarshalXMLByType(z, dt, gooxml.CorePropertiesType, p.CoreProperties.X()); err != nil {
+		return err
+	}
+	if p.Thumbnail != nil {
+		tn, err := z.Create("docProps/thumbnail.jpeg")
+		if err != nil {
+			return err
+		}
+		if err := jpeg.Encode(tn, p.Thumbnail, nil); err != nil {
+			return err
+		}
+	}
+
+	documentFn := gooxml.AbsoluteFilename(dt, gooxml.OfficeDocumentType, 0)
+	if err := zippkg.MarshalXML(z, documentFn, p.x); err != nil {
+		return err
+	}
+	if err := zippkg.MarshalXML(z, zippkg.RelationsPathFor(documentFn), p.prels.X()); err != nil {
+		return err
+	}
+
+	for i, slide := range p.slides {
+		spath := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideType, i+1)
+		zippkg.MarshalXML(z, spath, slide)
+		if !p.slideRels[i].IsEmpty() {
+			rpath := zippkg.RelationsPathFor(spath)
+			zippkg.MarshalXML(z, rpath, p.slideRels[i].X())
+		}
+	}
+	for i, m := range p.masters {
+		mpath := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideMasterType, i+1)
+		zippkg.MarshalXML(z, mpath, m)
+		if !p.masterRels[i].IsEmpty() {
+			rpath := zippkg.RelationsPathFor(mpath)
+			zippkg.MarshalXML(z, rpath, p.masterRels[i].X())
+		}
+	}
+	for i, l := range p.layouts {
+		mpath := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideLayoutType, i+1)
+		zippkg.MarshalXML(z, mpath, l)
+		if !p.layoutRels[i].IsEmpty() {
+			rpath := zippkg.RelationsPathFor(mpath)
+			zippkg.MarshalXML(z, rpath, p.layoutRels[i].X())
+		}
+	}
+	for i, l := range p.themes {
+		mpath := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.ThemeType, i+1)
+		zippkg.MarshalXML(z, mpath, l)
+		if !p.themeRels[i].IsEmpty() {
+			rpath := zippkg.RelationsPathFor(mpath)
+			zippkg.MarshalXML(z, rpath, p.themeRels[i].X())
+		}
+	}
+
+	for i, img := range p.Images {
+		fn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.ImageType, i+1)
+		if img.Path() != "" {
+			if err := zippkg.AddFileFromDisk(z, fn, img.Path()); err != nil {
+				return err
+			}
+		} else {
+			gooxml.Log("unsupported image source: %+v", img)
+		}
+	}
+
 	if err := zippkg.MarshalXML(z, gooxml.ContentTypesFilename, p.ContentTypes.X()); err != nil {
 		return err
 	}
-	if err := zippkg.MarshalXML(z, "_rels/.rels", p.Rels.X()); err != nil {
+	if err := p.WriteExtraFiles(z); err != nil {
 		return err
 	}
-	if err := zippkg.MarshalXML(z, "docProps/app.xml", p.AppProperties.X()); err != nil {
-		return err
-	}
-	if err := zippkg.MarshalXML(z, "docProps/core.xml", p.CoreProperties.X()); err != nil {
-		return err
-	}
-	if err := zippkg.MarshalXML(z, "ppt/presentation.xml", p.x); err != nil {
-		return err
-	}
-	if err := zippkg.MarshalXML(z, "ppt/_rels/presentation.xml.rels", p.prels.X()); err != nil {
-		return err
-	}
-	for i, slide := range p.slides {
-		spath := fmt.Sprintf("ppt/slides/slide%d.xml", i+1)
-		zippkg.MarshalXML(z, spath, slide)
-		rpath := zippkg.RelationsPathFor(spath)
-		zippkg.MarshalXML(z, rpath, p.slideRels[i].X())
-	}
-	for i, m := range p.masters {
-		mpath := fmt.Sprintf("ppt/slideMasters/slideMaster%d.xml", i+1)
-		zippkg.MarshalXML(z, mpath, m)
-		rpath := zippkg.RelationsPathFor(mpath)
-		zippkg.MarshalXML(z, rpath, p.masterRels[i].X())
-	}
-	for i, l := range p.layouts {
-		mpath := fmt.Sprintf("ppt/slideLayouts/slideLayout%d.xml", i+1)
-		zippkg.MarshalXML(z, mpath, l)
-		rpath := zippkg.RelationsPathFor(mpath)
-		zippkg.MarshalXML(z, rpath, p.layoutRels[i].X())
-	}
-	for i, l := range p.themes {
-		tpath := fmt.Sprintf("ppt/theme/theme%d.xml", i+1)
-		zippkg.MarshalXML(z, tpath, l)
-	}
-	p.WriteExtraFiles(z)
 	return nil
 }
 
@@ -341,3 +495,192 @@ func (p *Presentation) Validate() error {
 	}
 	return nil
 }
+
+// SlideMasters returns the slide masters defined in the presentation.
+func (p *Presentation) SlideMasters() []SlideMaster {
+	ret := []SlideMaster{}
+	for i, m := range p.masters {
+
+		ret = append(ret, SlideMaster{p, p.masterRels[i], m})
+	}
+	return ret
+}
+
+// SlideLayouts returns the slide layouts defined in the presentation.
+func (p *Presentation) SlideLayouts() []SlideLayout {
+	ret := []SlideLayout{}
+	for _, l := range p.layouts {
+		ret = append(ret, SlideLayout{l})
+	}
+	return ret
+}
+
+func (p *Presentation) onNewRelationship(decMap *zippkg.DecodeMap, target, typ string, files []*zip.File, rel *relationships.Relationship, src zippkg.Target) error {
+	dt := gooxml.DocTypePresentation
+
+	switch typ {
+	case gooxml.OfficeDocumentType:
+		p.x = pml.NewPresentation()
+		decMap.AddTarget(target, p.x, typ, 0)
+		decMap.AddTarget(zippkg.RelationsPathFor(target), p.prels.X(), typ, 0)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, 0)
+
+	case gooxml.CorePropertiesType:
+		decMap.AddTarget(target, p.CoreProperties.X(), typ, 0)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, 0)
+
+	case gooxml.ExtendedPropertiesType:
+		decMap.AddTarget(target, p.AppProperties.X(), typ, 0)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, 0)
+
+	case gooxml.SlideType:
+		sld := pml.NewSld()
+		p.slides = append(p.slides, sld)
+		decMap.AddTarget(target, sld, typ, uint32(len(p.slides)))
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, len(p.slides))
+
+		slRel := common.NewRelationships()
+		decMap.AddTarget(zippkg.RelationsPathFor(target), slRel.X(), typ, 0)
+		p.slideRels = append(p.slideRels, slRel)
+
+	case gooxml.SlideMasterType:
+		sm := pml.NewSldMaster()
+		if !decMap.AddTarget(target, sm, typ, uint32(len(p.masters)+1)) {
+			return nil
+		}
+		p.masters = append(p.masters, sm)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, len(p.masters))
+
+		// look for master rels
+		smRel := common.NewRelationships()
+		decMap.AddTarget(zippkg.RelationsPathFor(target), smRel.X(), typ, 0)
+		p.masterRels = append(p.masterRels, smRel)
+
+	case gooxml.SlideLayoutType:
+		sl := pml.NewSldLayout()
+		if !decMap.AddTarget(target, sl, typ, uint32(len(p.layouts)+1)) {
+			return nil
+		}
+		p.layouts = append(p.layouts, sl)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, len(p.layouts))
+
+		// look for layout rels
+		slRel := common.NewRelationships()
+		decMap.AddTarget(zippkg.RelationsPathFor(target), slRel.X(), typ, 0)
+		p.layoutRels = append(p.layoutRels, slRel)
+
+	case gooxml.ThumbnailType:
+		// read our thumbnail
+		for i, f := range files {
+			if f == nil {
+				continue
+			}
+			if f.Name == target {
+				rc, err := f.Open()
+				if err != nil {
+					return fmt.Errorf("error reading thumbnail: %s", err)
+				}
+				p.Thumbnail, _, err = image.Decode(rc)
+				rc.Close()
+				if err != nil {
+					return fmt.Errorf("error decoding thumbnail: %s", err)
+				}
+				files[i] = nil
+			}
+		}
+
+	case gooxml.ThemeType:
+		thm := dml.NewTheme()
+		if !decMap.AddTarget(target, thm, typ, uint32(len(p.themes)+1)) {
+			return nil
+		}
+		p.themes = append(p.themes, thm)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, len(p.themes))
+
+		// look for theme rels
+		thmRel := common.NewRelationships()
+		decMap.AddTarget(zippkg.RelationsPathFor(target), thmRel.X(), typ, 0)
+		p.themeRels = append(p.themeRels, thmRel)
+
+	case gooxml.ImageType:
+		target = filepath.Clean(target)
+		for i, f := range files {
+			if f == nil {
+				continue
+			}
+			if f.Name == target {
+				path, err := zippkg.ExtractToDiskTmp(f, p.TmpPath)
+				if err != nil {
+					return err
+				}
+				img, err := common.ImageFromFile(path)
+				if err != nil {
+					return err
+				}
+				iref := common.MakeImageRef(img, &p.DocBase, p.prels)
+				p.Images = append(p.Images, iref)
+				files[i] = nil
+				decMap.RecordIndex(target, len(p.Images))
+				break
+			}
+		}
+		idx := decMap.IndexFor(target)
+		rel.TargetAttr = gooxml.RelativeFilename(dt, src.Typ, typ, idx)
+
+	default:
+		gooxml.Log("unsupported relationship type: %s tgt: %s", typ, target)
+	}
+	return nil
+}
+
+// Slides returns the slides in the presentation.
+func (p *Presentation) Slides() []Slide {
+	ret := []Slide{}
+	for i, v := range p.slides {
+		ret = append(ret, Slide{p.x.SldIdLst.SldId[i], v})
+	}
+	return ret
+}
+
+// RemoveSlide removes a slide from a presentation.
+func (p *Presentation) RemoveSlide(s Slide) error {
+	removed := false
+	slideIdx := 0
+	for i, v := range p.slides {
+		if v == s.x {
+			if p.x.SldIdLst.SldId[i] != s.sid {
+				return errors.New("inconsistency in slides and ID list")
+			}
+			copy(p.slides[i:], p.slides[i+1:])
+			p.slides = p.slides[0 : len(p.slides)-1]
+
+			copy(p.slideRels[i:], p.slideRels[i+1:])
+			p.slideRels = p.slideRels[0 : len(p.slideRels)-1]
+
+			copy(p.x.SldIdLst.SldId[i:], p.x.SldIdLst.SldId[i+1:])
+			p.x.SldIdLst.SldId = p.x.SldIdLst.SldId[0 : len(p.x.SldIdLst.SldId)-1]
+
+			removed = true
+			slideIdx = i
+		}
+	}
+
+	if !removed {
+		return errors.New("unable to find slide")
+	}
+
+	// remove it from content types
+	fn := gooxml.AbsoluteFilename(gooxml.DocTypePresentation, gooxml.SlideType, slideIdx+1)
+	p.ContentTypes.RemoveOverride(fn)
+	return nil
+}
+
+// GetLayoutByName retrieves a slide layout given a layout name.
+func (p *Presentation) GetLayoutByName(name string) (SlideLayout, error) {
+	for _, l := range p.layouts {
+		if l.CSld.NameAttr != nil && name == *l.CSld.NameAttr {
+			return SlideLayout{l}, nil
+		}
+	}
+	return SlideLayout{}, errors.New("unable to find layout with that name")
+}

presentation/read.go

@@ -0,0 +1,56 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package presentation
+
+import (
+	"archive/zip"
+	"fmt"
+	"io"
+	"io/ioutil"
+
+	"baliance.com/gooxml"
+	"baliance.com/gooxml/zippkg"
+)
+
+// Read reads a document from an io.Reader.
+func Read(r io.ReaderAt, size int64) (*Presentation, error) {
+	doc := New()
+
+	td, err := ioutil.TempDir("", "gooxml-pptx")
+	if err != nil {
+		return nil, err
+	}
+	doc.TmpPath = td
+
+	zr, err := zip.NewReader(r, size)
+	if err != nil {
+		return nil, fmt.Errorf("parsing zip: %s", err)
+	}
+
+	files := []*zip.File{}
+	files = append(files, zr.File...)
+
+	decMap := zippkg.DecodeMap{}
+	decMap.SetOnNewRelationshipFunc(doc.onNewRelationship)
+	// we should discover all contents by starting with these two files
+	decMap.AddTarget(gooxml.ContentTypesFilename, doc.ContentTypes.X(), "", 0)
+	decMap.AddTarget(gooxml.BaseRelsFilename, doc.Rels.X(), "", 0)
+	if err := decMap.Decode(files); err != nil {
+		return nil, err
+	}
+
+	for _, f := range files {
+		if f == nil {
+			continue
+		}
+		if err := doc.AddExtraFileFromZip(f); err != nil {
+			return nil, err
+		}
+	}
+	return doc, nil
+}

presentation/slide.go

@@ -7,9 +7,64 @@
 
 package presentation
 
-import "baliance.com/gooxml/schema/soo/pml"
+import (
+	"errors"
+
+	"baliance.com/gooxml/schema/soo/pml"
+)
 
 type Slide struct {
 	sid *pml.CT_SlideIdListEntry
 	x   *pml.Sld
 }
+
+// X returns the inner wrapped XML type.
+func (s Slide) X() *pml.Sld {
+	return s.x
+}
+
+// PlaceHolders returns all of the content place holders within a given slide.
+func (s Slide) PlaceHolders() []PlaceHolder {
+	ret := []PlaceHolder{}
+	for _, spChc := range s.x.CSld.SpTree.Choice {
+		for _, sp := range spChc.Sp {
+			if sp.NvSpPr != nil && sp.NvSpPr.NvPr != nil && sp.NvSpPr.NvPr.Ph != nil {
+				ret = append(ret, PlaceHolder{sp, s.x})
+			}
+		}
+	}
+	return ret
+}
+
+// GetPlaceholder returns a placeholder given its type.  If there are multiplace
+// placeholders of the same type, this method returns the first one.  You must use the
+// PlaceHolders() method to access the others.
+func (s Slide) GetPlaceholder(t pml.ST_PlaceholderType) (PlaceHolder, error) {
+	for _, spChc := range s.x.CSld.SpTree.Choice {
+		for _, sp := range spChc.Sp {
+			if sp.NvSpPr != nil && sp.NvSpPr.NvPr != nil && sp.NvSpPr.NvPr.Ph != nil {
+				if sp.NvSpPr.NvPr.Ph.TypeAttr == t {
+					return PlaceHolder{sp, s.x}, nil
+				}
+			}
+		}
+	}
+	return PlaceHolder{}, errors.New("unable to find placeholder")
+}
+
+// GetPlaceholderByIndex returns a placeholder given its index.  If there are multiplace
+// placeholders of the same index, this method returns the first one.  You must use the
+// PlaceHolders() method to access the others.
+func (s Slide) GetPlaceholderByIndex(idx uint32) (PlaceHolder, error) {
+	for _, spChc := range s.x.CSld.SpTree.Choice {
+		for _, sp := range spChc.Sp {
+			if sp.NvSpPr != nil && sp.NvSpPr.NvPr != nil && sp.NvSpPr.NvPr.Ph != nil {
+				if (idx == 0 && sp.NvSpPr.NvPr.Ph.IdxAttr == nil) ||
+					(sp.NvSpPr.NvPr.Ph.IdxAttr != nil && *sp.NvSpPr.NvPr.Ph.IdxAttr == idx) {
+					return PlaceHolder{sp, s.x}, nil
+				}
+			}
+		}
+	}
+	return PlaceHolder{}, errors.New("unable to find placeholder")
+}

presentation/slidelayout.go

@@ -0,0 +1,35 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package presentation
+
+import (
+	"baliance.com/gooxml/schema/soo/pml"
+)
+
+// SlideLayout
+type SlideLayout struct {
+	x *pml.SldLayout
+}
+
+// X returns the inner wrapped XML type.
+func (s SlideLayout) X() *pml.SldLayout {
+	return s.x
+}
+
+// Type returns the type of the slide layout.
+func (s SlideLayout) Type() pml.ST_SlideLayoutType {
+	return s.x.TypeAttr
+}
+
+// Name returns the name of the slide layout.
+func (s SlideLayout) Name() string {
+	if s.x.CSld != nil && s.x.CSld.NameAttr != nil {
+		return *s.x.CSld.NameAttr
+	}
+	return ""
+}

presentation/slidemaster.go

@@ -0,0 +1,48 @@
+// Copyright 2017 Baliance. All rights reserved.
+//
+// Use of this source code is governed by the terms of the Affero GNU General
+// Public License version 3.0 as published by the Free Software Foundation and
+// appearing in the file LICENSE included in the packaging of this file. A
+// commercial license can be purchased by contacting sales@baliance.com.
+
+package presentation
+
+import (
+	"strconv"
+	"strings"
+
+	"baliance.com/gooxml/common"
+	"baliance.com/gooxml/schema/soo/pml"
+)
+
+// SlideMaster is the slide master for a presentation.
+type SlideMaster struct {
+	p    *Presentation
+	rels common.Relationships
+	x    *pml.SldMaster
+}
+
+// X returns the inner wrapped XML type.
+func (s SlideMaster) X() *pml.SldMaster {
+	return s.x
+}
+
+func (s SlideMaster) SlideLayouts() []SlideLayout {
+	nameToLayoutIdx := map[string]int{}
+	layouts := []SlideLayout{}
+	for _, r := range s.rels.Relationships() {
+		idxTxt := strings.Replace(r.Target(), "../slideLayouts/slideLayout", "", -1)
+		idxTxt = strings.Replace(idxTxt, ".xml", "", -1)
+		if idx, err := strconv.ParseInt(idxTxt, 10, 32); err == nil {
+			nameToLayoutIdx[r.ID()] = int(idx)
+		}
+	}
+
+	for _, lid := range s.x.SldLayoutIdLst.SldLayoutId {
+		if idx, ok := nameToLayoutIdx[lid.RIdAttr]; ok {
+			lout := s.p.layouts[idx-1]
+			layouts = append(layouts, SlideLayout{lout})
+		}
+	}
+	return layouts
+}

schemas.go

@@ -35,6 +35,8 @@ const (
 	SMLStyleSheetContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml"
 	TableType                = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/table"
 	TableContentType         = "application/vnd.openxmlformats-officedocument.spreadsheetml.table+xml"
+	ViewPropertiesType       = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/viewProps"
+	TableStylesType          = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/tableStyles"
 
 	// WML
 	HeaderType      = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/header"
@@ -46,12 +48,13 @@ const (
 	EndNotesType    = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/endnotes"
 
 	// PML
-	SlideType                   = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide"
-	SlideContentType            = "application/vnd.openxmlformats-officedocument.presentationml.slide+xml"
-	SlideMasterRelationshipType = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideMaster"
-	SlideMasterContentType      = "application/vnd.openxmlformats-officedocument.presentationml.slideMaster+xml"
-	SlideLayoutType             = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout"
-	SlideLayoutContentType      = "application/vnd.openxmlformats-officedocument.presentationml.slideLayout+xml"
+	SlideType                  = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide"
+	SlideContentType           = "application/vnd.openxmlformats-officedocument.presentationml.slide+xml"
+	SlideMasterType            = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideMaster"
+	SlideMasterContentType     = "application/vnd.openxmlformats-officedocument.presentationml.slideMaster+xml"
+	SlideLayoutType            = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout"
+	SlideLayoutContentType     = "application/vnd.openxmlformats-officedocument.presentationml.slideLayout+xml"
+	PresentationPropertiesType = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/presProps"
 
 	// VML
 	VMLDrawingType        = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing"

zippkg/decodemap.go

@@ -35,6 +35,8 @@ type DecodeMap struct {
 	basePaths   map[*relationships.Relationships]string
 	rels        []Target
 	decodeFunc  OnNewRelationshipFunc
+	decoded     map[string]struct{}
+	indices     map[string]int
 }
 
 // SetOnNewRelationshipFunc sets the function to be called when a new
@@ -55,12 +57,27 @@ type Target struct {
 // unmarshaled to.  filePath is the absolute path to the target, ifc is the
 // object to decode into, sourceFileType is the type of file that the reference
 // was discovered in, and index is the index of the source file type.
-func (d *DecodeMap) AddTarget(filePath string, ifc interface{}, sourceFileType string, idx uint32) {
+func (d *DecodeMap) AddTarget(filePath string, ifc interface{}, sourceFileType string, idx uint32) bool {
 	if d.pathsToIfcs == nil {
 		d.pathsToIfcs = make(map[string]Target)
 		d.basePaths = make(map[*relationships.Relationships]string)
+		d.decoded = make(map[string]struct{})
+		d.indices = make(map[string]int)
 	}
-	d.pathsToIfcs[filepath.Clean(filePath)] = Target{Path: filePath, Typ: sourceFileType, Ifc: ifc, Index: idx}
+	fn := filepath.Clean(filePath)
+	if _, ok := d.decoded[fn]; ok {
+		// already decoded this file
+		return false
+	}
+	d.decoded[fn] = struct{}{}
+	d.pathsToIfcs[fn] = Target{Path: filePath, Typ: sourceFileType, Ifc: ifc, Index: idx}
+	return true
+}
+func (d *DecodeMap) RecordIndex(path string, idx int) {
+	d.indices[path] = idx
+}
+func (d *DecodeMap) IndexFor(path string) int {
+	return d.indices[path]
 }
 
 // Decode loops decoding targets registered with AddTarget and calling th