Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) - Diagramming Components

MindFusion Forums › Diagramming Components › WPF › Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4)

(Moderator: Slavcho)

‹ Previous Topic | Next Topic ›

Pages: 1

Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) (Read 6541 times)

eXTruDEr YaBB Newbies Offline Mind con Fusion ;-) Posts: 7 Joined: Jun 14^th, 2016	Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Jun 14^th, 2016 at 3:20pm	Print Post
	Hi, I want to visualize a DinA4 Diagram inside of my tool. For this I'm using the MindFusion.Pdf.PageSizes.A4 to get the correct Bounds. I set a Ruler (Unit="Millimeter") around the Diagram to check its size. I expected 210 mm x 297 mm, but observed 126 mm x 178 mm. Further I want to export the diagram to a PDF. I set the PageSize of the PDF Exporter to MindFusion.Pdf.PageSize.A4, but the diagram inside of generated PDF is much smaller as expected.


	IP Logged

Slavcho YaBB Moderator Offline tech.support Posts: 3447 Joined: Oct 19^th, 2005	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #1 - Jun 14^th, 2016 at 4:27pm	Print Post
	Hi, Do you mean you are directly assigning the MindFusion.Pdf.PageSizes.A4 size to the Bounds rectangle? The PageSizes values are actually specified in PDF 72 DPI units and will not match diagram's default 96 DPI units, so you will have to multiply by 96/72. Also if you are trying to measure some diagram node with size specified in millimeters, you will have to set diagram's MeasureUnit property too. Regards, Slavcho Mindfusion


	IP Logged

eXTruDEr YaBB Newbies Offline Mind con Fusion ;-) Posts: 7 Joined: Jun 14^th, 2016	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #2 - Jun 16^th, 2016 at 11:43am	Print Post
	Thx Using your information, I could solve my problem with the PDF export. BUT: If I use the PageSizes (*96/72) without any modifications to size the Bounds Rect of the diagram, the width of the diagram doesn't fit to the width of the PDF. So an empty DinA4 Diagram requires two DinA4 pages inside of the PDF. The second page contains only the right border of the diagram (width < 10 pixel). Is the PDF exporter using any fix border for the diagram?


	IP Logged

Slavcho YaBB Moderator Offline tech.support Posts: 3447 Joined: Oct 19^th, 2005	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #3 - Jun 16^th, 2016 at 12:10pm	Print Post
	Hi, Try subtracting PdfExporter.Margins values from diagram.Bounds size or set smaller margins. Regards, Slavcho Mindfusion


	IP Logged

eXTruDEr YaBB Newbies Offline Mind con Fusion ;-) Posts: 7 Joined: Jun 14^th, 2016	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #4 - Jun 16^th, 2016 at 12:33pm	Print Post
	I had the same idea: I reduce the margins of the PDF exporter to Thickness(0, 0, 0, 0). With this setting I got the result of my last post. To solve the problem I reduced the width of the diagram. I'm still wondering why the ruler scale (in Millimeter) doesn't display the correct value for the width and height of the diagram. If I switch the ruler unit to pixel the sizes fit. (The zero of the ruler starts at the top left corner of the diagram.) For example the width of the diagram (about 210 mm) relates to 167 mm on the ruler.


	IP Logged

Slavcho YaBB Moderator Offline tech.support Posts: 3447 Joined: Oct 19^th, 2005	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #5 - Jun 17^th, 2016 at 8:17am	Print Post
	It shows 210x297 size with following code, see linked test project - Code const double unitScale = 96.0 / 72.0; var a4 = MindFusion.Pdf.PageSizes.A4; diagram.Bounds = new Rect( 0, 0, a4.Width * unitScale, a4.Height * unitScale); diagram.Background = Brushes.Orange; ruler.Unit = RulerUnit.Millimeter; https://mindfusion.eu/_samples/WpfRulerTest.zip If you set Diagram.MeasureUnit after Bounds assignment, Bounds size is not automatically scaled to match new unit but it just keeps its assigned numerical values. If you want to scale diagram and item sizes to match new unit, call the ChangeUnit method instead. Regards, Slavcho Mindfusion


	IP Logged

eXTruDEr YaBB Newbies Offline Mind con Fusion ;-) Posts: 7 Joined: Jun 14^th, 2016	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #6 - Jun 17^th, 2016 at 9:00am	Print Post
	Hi, I downloaded WpfRulerTest and start this project right once in Visual Studio. Here I get exactly the same error with the ruler (see Attachment)

	MindFusionWPFRulerExample.png (Attachment deleted)
	IP Logged

Slavcho YaBB Moderator Offline tech.support Posts: 3447 Joined: Oct 19^th, 2005	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #7 - Jun 17^th, 2016 at 12:38pm	Print Post
	Right, we've reproduced it on 120 DPI resolution settings, our developer is working on the fix.


	IP Logged

Slavcho YaBB Moderator Offline tech.support Posts: 3447 Joined: Oct 19^th, 2005	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #8 - Jun 17^th, 2016 at 2:23pm	Print Post
	Hi, This build should fix the wrong scale - https://mindfusion.eu/_temp/ruler_fix.zip Regards, Slavcho Mindfusion


	IP Logged

eXTruDEr YaBB Newbies Offline Mind con Fusion ;-) Posts: 7 Joined: Jun 14^th, 2016	Re: Ruler, Diagram and PDF-Export with correct dimensions (e.g. DinA4) Reply #9 - Jun 20^th, 2016 at 11:21am	Print Post
	Perfect ! This new build is working fine. Thank you for this fast bugfix.


	IP Logged

Pages: 1

‹ Previous Topic | Next Topic ›