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fix image size

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This commit is contained in:
Júlio César Batista 2023-04-05 16:09:33 -03:00
parent eb2518c0e4
commit 356ab93941
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GPG key ID: 10C4B861BF314878
2 changed files with 7 additions and 7 deletions
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4
lib/pptx/pptx.go
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@ -53,9 +53,11 @@ const SLIDE_WIDTH = 9144000
const SLIDE_HEIGHT = 5143500
const HEADER_HEIGHT = 392471
const IMAGE_WIDTH = SLIDE_WIDTH
const IMAGE_HEIGHT = SLIDE_HEIGHT - HEADER_HEIGHT
// keep the right aspect ratio: SLIDE_WIDTH / SLIDE_HEIGHT = IMAGE_WIDTH / IMAGE_HEIGHT
const IMAGE_WIDTH = IMAGE_HEIGHT * (SLIDE_WIDTH / SLIDE_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>`
func getRelsSlideXml(imageId string) string {

10
lib/pptx/presentation.go
View file

@ -53,21 +53,19 @@ func (p *Presentation) AddSlide(pngContent []byte, boardPath []string) error {
return fmt.Errorf("error decoding PNG image: %v", err)
}
var width, height, top, left int
var width, height int
srcSize := src.Bounds().Size()
// compute the size and position to fit the slide
if srcSize.X > srcSize.Y {
width = IMAGE_WIDTH
height = int(float64(width) * (float64(srcSize.X) / float64(srcSize.Y)))
left = 0
top = (IMAGE_HEIGHT - height) / 2
height = int(float64(width) * (float64(srcSize.Y) / float64(srcSize.X)))
} else {
height = IMAGE_HEIGHT
width = int(float64(height) * (float64(srcSize.X) / float64(srcSize.Y)))
top = 0
left = (IMAGE_WIDTH - width) / 2
}
top := (IMAGE_HEIGHT - height) / 2
left := (SLIDE_WIDTH - width) / 2
slide := &Slide{
BoardPath: make([]string, len(boardPath)),