PDF rendering support by rcoreilly · Pull Request #1619 · cogentcore/core

rcoreilly · 2025-10-02T10:04:55Z

converting code from tdewolff canvas PDF rendering to support direct rendering to PDF files.

…established, all good

…ext)

…rd system and text transforms etc, but should be good now.

…ow..

…in render; fix times-roman

… pages properly.

…er / rich.Settings: it wasn't using the args passed in shaper anyway, and it is just cleaner to have one definitive location for global rich text settings (font names etc), so cleaned that up.

…ation angle

…ll at all -- offsets are off

…roperties control pagination. just needs testing of that and floats

…ive transform -- pdf and svg renderers actually need the incremental one, not Cumulative! fixes pdf rendering of svgs (modulo missing features).

…thors to just a string so you can do random formatting on it.

…with url handler

…ays, using to center figures, prevent page breaks on headers, etc.

kkoreilly

Comments through content.

colors/matcolor/scheme.go

content/bcontent/page.go

content/buttons.go

content/content.go

content/url_js.go

kkoreilly

Comments through gpu.

core/settings.go

kkoreilly

Comments through math32.

htmlcore/handler.go

math32/matrix2.go

math32/vector2i.go

…er all these years!

kkoreilly

Comments up to paginate.

paint/renderers/renderers.go

styles/style.go

system/driver/base/app.go

system/locale.go

text/csl/mdcite/mdcite.go

kkoreilly

Comments through rich.

text/paginate/paginate_test.go

text/paginate/runners.go

text/rich/settings.go

kkoreilly

All reviewed!

text/shaped/shaped_test.go

go.mod

…th margins in printer settings.

…ally), including WrapPi convenience function, along with associated tests, including for previously untested Truncate and IntMultiple functions.

…e gets set as fully transparent color, in which case text render mode should not render stroke.

…ugs, and MinAngleDiff for subtracting angles.

…nd value.

rcoreilly added 3 commits October 2, 2025 08:29

pdf: basic pdf writer converted from tdewolff canvas, working for paths

23b5e6f

pdf: pdfrender updated, layers supported

5891134

pdf: units converting to points properly, top-down coordinate system …

52a83e0

…established, all good

rcoreilly marked this pull request as draft October 2, 2025 10:05

rcoreilly added 26 commits October 2, 2025 12:32

pdf: screenshot saves PDFs -- buttons in demo looks good (minus the t…

2923307

…ext)

pdf: fix image rendering

054109a

pdf: text rendering working -- tricky issues with the bottom-left coo…

1da7202

…rd system and text transforms etc, but should be good now.

pdf: close on text rotation but not quite.. save that for later for n…

dfe506d

…ow..

pdf: include transform in layers; eliminate empty push-pop sequences …

60b2267

…in render; fix times-roman

pdf: move pdf to top level in paint -- no need to be under ppath

c7cb621

pdf: fix import and yaegicore

9d5658d

pdf: pagination minimally working; pdf writer is not writing multiple…

284a4e1

… pages properly.

pdf: multipage working

ea9a396

pdf: page layout working but doesn't look right. major update to Shap…

5e2f4fb

…er / rich.Settings: it wasn't using the args passed in shaper anyway, and it is just cleaner to have one definitive location for global rich text settings (font names etc), so cleaned that up.

pdf: handles font setting, updating, layout looks good.

ac20cf1

pdf: first-pass working on docs / content -- still many issues.. :)

67f7b5a

pdf: working solidly on docs!

8a83173

pdf: fix text rotation -- changing to top-left inevitably changes rot…

09b5097

…ation angle

pdf: runners as functions, working well

a7987eb

pdf: context stack tracks pdf state better -- svg test not working we…

5338325

…ll at all -- offsets are off

pdf: new pagination framework with different stages -- much better. p…

7cd80ac

…roperties control pagination. just needs testing of that and floats

pdf: render.Context stores both the incremental Transform and Cumulat…

cc25528

…ive transform -- pdf and svg renderers actually need the incremental one, not Cumulative! fixes pdf rendering of svgs (modulo missing features).

pdf: minor svg_test fixup

8691e11

pdf: fix shaped_test -- emoji is not working since some point!

c4904c4

pdf: paginate title example working, and content settings

86cdc08

pdf: title setting url default etc

a9af368

pdf: title etc updated, added elements to content, changed content Au…

6a8d75f

…thors to just a string so you can do random formatting on it.

pdf: start on links: got positioning right finally, but need to deal …

8001db5

…with url handler

pdf: math rendering working

d92aca4

pdf: content and htmlcore element handling improved: setting tags alw…

a8a136d

…ays, using to center figures, prevent page breaks on headers, etc.

rcoreilly added 2 commits December 19, 2025 08:44

pdf: yaegicore update

8cffdc0

Merge branch 'main' into pdf

cda4bd5

kkoreilly requested changes Dec 22, 2025

View reviewed changes

pdf: fixes from kai review

234f7e6

kkoreilly requested changes Dec 23, 2025

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kkoreilly requested changes Dec 23, 2025

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rcoreilly added 3 commits December 23, 2025 06:54

pdf: key fix for xyz on web: need Size method on renderer interface.

f9fdeb9

pdf: how can I still be so confused about rows, columns in matrix aft…

7abcf25

…er all these years!

pdf: remove matcolor.Scheme.Background in favor of Surface, OnSurface

c5dbfaa

kkoreilly requested changes Dec 24, 2025

View reviewed changes

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text/paginate/runners.go Outdated Show resolved Hide resolved

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text/rich/settings.go Show resolved Hide resolved

kkoreilly requested changes Dec 24, 2025

View reviewed changes

text/shaped/shaped_test.go Show resolved Hide resolved

go.mod Show resolved Hide resolved

rcoreilly added 5 commits December 24, 2025 21:11

pdf: ZeroSpace() also nils BoxShadow and MaxBoxShadow

0f5920a

pdf: locale simplification

214d0d9

pdf: locale simplification p2

a7fc614

pdf: mdcite separator

641c747

pdf: other review fixes

adcbf18

kkoreilly mentioned this pull request Dec 24, 2025

Fix system locale on android #1635

Open

rcoreilly and others added 9 commits December 24, 2025 22:37

pdf: always add printer settings, in core settings; also fix issue wi…

abc3906

…th margins in printer settings.

pdf: add NewQuatIdentity function

92082d0

pdf: yaegi update

8c1c3d4

pdf: add WrapMax and WrapMinMax functions for efficient wrapping (fin…

665c5f3

…ally), including WrapPi convenience function, along with associated tests, including for previously untested Truncate and IntMultiple functions.

pdf: handle case that occurs in new text in canvas where stroke = non…

ac6d590

…e gets set as fully transparent color, in which case text render mode should not render stroke.

pdf: math32 additions: IsNaN() methods for Vector, Quat for finding b…

166ced6

…ugs, and MinAngleDiff for subtracting angles.

pdf: Surface color for dark theme is 0, like the now-removed Backgrou…

413c6cd

…nd value.

content: MakeToolbarPDF function

8ca5bf1

matcolor: scheme fixes

cec4708

kkoreilly approved these changes Jan 6, 2026

View reviewed changes

kkoreilly merged commit 50dcded into main Jan 6, 2026
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kkoreilly deleted the pdf branch January 6, 2026 00:21

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