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slide title

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This commit is contained in:
Júlio César Batista 2023-04-04 18:47:22 -03:00
parent 3a5c389d2b
commit 0f362c3024
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GPG key ID: 10C4B861BF314878
3 changed files with 31 additions and 20 deletions
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2
d2cli/main.go
View file

@ -795,7 +795,7 @@ func renderPPTX(ctx context.Context, ms *xmain.State, presentation *ppt.Presenta
return err
}
err = presentation.AddSlide(pngImg)
err = presentation.AddSlide(strings.Join(boardPath, " / "), pngImg)
if err != nil {
return err
}

11
lib/ppt/pptx.go
View file

@ -50,6 +50,10 @@ func addFile(zipFile *zip.Writer, filePath, content string) error {
// https://startbigthinksmall.wordpress.com/2010/01/04/points-inches-and-emus-measuring-units-in-office-open-xml/
const SLIDE_WIDTH = 9144000
const SLIDE_HEIGHT = 5143500
const HEADER_HEIGHT = 392471
const IMAGE_WIDTH = SLIDE_WIDTH
const IMAGE_HEIGHT = SLIDE_HEIGHT - HEADER_HEIGHT
const RELS_SLIDE_XML = `<?xml version='1.0' encoding='UTF-8' standalone='yes'?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/slideLayout" Target="../slideLayouts/slideLayout7.xml" /><Relationship Id="%s" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Target="../media/%s.png" /></Relationships>`
@ -57,10 +61,11 @@ func getRelsSlideXml(imageId string) string {
return fmt.Sprintf(RELS_SLIDE_XML, imageId, imageId)
}
const SLIDE_XML = `<?xml version='1.0' encoding='UTF-8' standalone='yes'?><p:sld xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><p:cSld><p:spTree><p:nvGrpSpPr><p:cNvPr id="1" name="" /><p:cNvGrpSpPr /><p:nvPr /></p:nvGrpSpPr><p:grpSpPr /><p:pic><p:nvPicPr><p:cNvPr id="2" name="%s" descr="%s" /><p:cNvPicPr><a:picLocks noChangeAspect="1" /></p:cNvPicPr><p:nvPr /></p:nvPicPr><p:blipFill><a:blip r:embed="%s" /><a:stretch><a:fillRect /></a:stretch></p:blipFill><p:spPr><a:xfrm><a:off x="%d" y="%d" /><a:ext cx="%d" cy="%d" /></a:xfrm><a:prstGeom prst="rect"><a:avLst /></a:prstGeom></p:spPr></p:pic></p:spTree></p:cSld><p:clrMapOvr><a:masterClrMapping /></p:clrMapOvr></p:sld>`
const SLIDE_XML = `<?xml version='1.0' encoding='UTF-8' standalone='yes'?><p:sld xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" xmlns:p="http://schemas.openxmlformats.org/presentationml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><p:cSld><p:spTree><p:nvGrpSpPr><p:cNvPr id="1" name="" /><p:cNvGrpSpPr /><p:nvPr /></p:nvGrpSpPr><p:grpSpPr /><p:pic><p:nvPicPr><p:cNvPr id="2" name="%s" descr="%s" /><p:cNvPicPr><a:picLocks noChangeAspect="1" /></p:cNvPicPr><p:nvPr /></p:nvPicPr><p:blipFill><a:blip r:embed="%s" /><a:stretch><a:fillRect /></a:stretch></p:blipFill><p:spPr><a:xfrm><a:off x="%d" y="%d" /><a:ext cx="%d" cy="%d" /></a:xfrm><a:prstGeom prst="rect"><a:avLst /></a:prstGeom></p:spPr></p:pic><p:sp><p:nvSpPr><p:cNvPr id="95" name="%s" /><p:cNvSpPr txBox="1" /><p:nvPr /></p:nvSpPr><p:spPr><a:xfrm><a:off x="4001" y="6239" /><a:ext cx="9135998" cy="%d" /></a:xfrm><a:prstGeom prst="rect"><a:avLst /></a:prstGeom><a:ln w="12700"><a:miter lim="400000" /></a:ln><a:extLst><a:ext uri="{C572A759-6A51-4108-AA02-DFA0A04FC94B}"><ma14:wrappingTextBoxFlag val="1" xmlns:ma14="http://schemas.microsoft.com/office/mac/drawingml/2011/main" /></a:ext></a:extLst></p:spPr><p:txBody><a:bodyPr lIns="45719" rIns="45719"><a:spAutoFit /></a:bodyPr><a:lstStyle><a:lvl1pPr><a:defRPr sz="2400" /></a:lvl1pPr></a:lstStyle><a:p><a:pPr /><a:r><a:t>%s</a:t></a:r></a:p></p:txBody></p:sp></p:spTree></p:cSld><p:clrMapOvr><a:masterClrMapping /></p:clrMapOvr></p:sld>`
func getSlideXml(imageId, imageName string, top, left, width, height int) string {
return fmt.Sprintf(SLIDE_XML, imageName, imageName, imageId, left, top, width, height)
func getSlideXml(slideTitle, imageId string, top, left, width, height int) string {
top += HEADER_HEIGHT
return fmt.Sprintf(SLIDE_XML, slideTitle, slideTitle, imageId, left, top, width, height, slideTitle, HEADER_HEIGHT, slideTitle)
}
func getPresentationXmlRels(slideFileNames []string) string {

38
lib/ppt/presentation.go
View file

@ -17,18 +17,19 @@ type Presentation struct {
}
type Slide struct {
Image []byte
Width int
Height int
Top int
Left int
Title string
Image []byte
ImageWidth int
ImageHeight int
ImageTop int
ImageLeft int
}
func NewPresentation() *Presentation {
return &Presentation{}
}
func (p *Presentation) AddSlide(pngContent []byte) error {
func (p *Presentation) AddSlide(title string, pngContent []byte) error {
src, err := png.Decode(bytes.NewReader(pngContent))
if err != nil {
return fmt.Errorf("error decoding PNG image: %v", err)
@ -39,23 +40,24 @@ func (p *Presentation) AddSlide(pngContent []byte) error {
// compute the size and position to fit the slide
if srcSize.X > srcSize.Y {
width = SLIDE_WIDTH
width = IMAGE_WIDTH
height = int(float64(width) * (float64(srcSize.X) / float64(srcSize.Y)))
left = 0
top = (SLIDE_HEIGHT - height) / 2
top = (IMAGE_HEIGHT - height) / 2
} else {
height = SLIDE_HEIGHT
height = IMAGE_HEIGHT
width = int(float64(height) * (float64(srcSize.X) / float64(srcSize.Y)))
top = 0
left = (SLIDE_WIDTH - width) / 2
left = (IMAGE_WIDTH - width) / 2
}
p.Slides = append(p.Slides, &Slide{
Image: pngContent,
Width: width,
Height: height,
Top: top,
Left: left,
Title: title,
Image: pngContent,
ImageWidth: width,
ImageHeight: height,
ImageTop: top,
ImageLeft: left,
})
return nil
@ -93,7 +95,11 @@ func (p *Presentation) SaveTo(filePath string) error {
}
// TODO: center the image?
err = addFile(zipFile, fmt.Sprintf("ppt/slides/%s.xml", slideFileName), getSlideXml(imageId, imageId, slide.Top, slide.Left, slide.Width, slide.Height))
err = addFile(
zipFile,
fmt.Sprintf("ppt/slides/%s.xml", slideFileName),
getSlideXml(slide.Title, imageId, slide.ImageTop, slide.ImageLeft, slide.ImageWidth, slide.ImageHeight),
)
if err != nil {
return err
}