:sparkles: Support adding the watermark on export PDF https://github.com/siyuan-note/siyuan/issues/9961

app/electron-builder-darwin-arm64.yml

@@ -55,5 +55,8 @@ extraResources:
   - from: "appearance/themes/daylight"
     to: "appearance/themes/daylight"
     filter: "!**/{.DS_Store,custom.css}"
+  - from: "appearance/fonts"
+    to: "appearance/fonts"
+    filter: "!**/{.DS_Store}"
   - from: "pandoc/pandoc-darwin-amd64.zip"
     to: "pandoc.zip"

app/electron-builder-darwin.yml

@@ -55,5 +55,8 @@ extraResources:
   - from: "appearance/themes/daylight"
     to: "appearance/themes/daylight"
     filter: "!**/{.DS_Store,custom.css}"
+  - from: "appearance/fonts"
+    to: "appearance/fonts"
+    filter: "!**/{.DS_Store}"
   - from: "pandoc/pandoc-darwin-amd64.zip"
     to: "pandoc.zip"

app/electron-builder-linux.yml

@@ -50,5 +50,8 @@ extraResources:
   - from: "appearance/themes/daylight"
     to: "appearance/themes/daylight"
     filter: "!**/{.DS_Store,custom.css}"
+  - from: "appearance/fonts"
+    to: "appearance/fonts"
+    filter: "!**/{.DS_Store}"
   - from: "pandoc/pandoc-linux-amd64.zip"
     to: "pandoc.zip"

app/electron-builder.yml

@@ -67,5 +67,8 @@ extraResources:
   - from: "appearance/themes/daylight"
     to: "appearance/themes/daylight"
     filter: "!**/{.DS_Store,custom.css}"
+  - from: "src/assets/fonts"
+    to: "appearance/fonts"
+    filter: "!**/{.DS_Store}"
   - from: "pandoc/pandoc-windows-amd64.zip"
     to: "pandoc.zip"

app/src/assets/fonts/LxgwWenKai-Lite-1.311/LICENSE

@@ -0,0 +1,94 @@
+Copyright 2021-2023 LXGW (https://github.com/lxgw/LxgwWenKai)
+Copyright 2020 The Klee Project Authors (https://github.com/fontworks-fonts/Klee)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

kernel/api/export.go

@@ -528,7 +528,8 @@ func processPDF(c *gin.Context) {
 		merge = arg["merge"].(bool)
 	}
 	removeAssets := arg["removeAssets"].(bool)
-	err := model.ProcessPDF(id, path, merge, removeAssets)
+	//watermark := arg["watermark"].(bool)
+	err := model.ProcessPDF(id, path, merge, removeAssets, true)
 	if nil != err {
 		ret.Code = -1
 		ret.Msg = err.Error()

kernel/conf/export.go

@@ -32,6 +32,8 @@ type Export struct {
 	DocxTemplate            string `json:"docxTemplate"`            // Docx 导出时模板文件路径
 	PDFWatermarkStr         string `json:"pdfWatermarkStr"`         // PDF 导出时水印文本或水印文件路径
 	PDFWatermarkDesc        string `json:"pdfWatermarkDesc"`        // PDF 导出时水印位置、大小和样式等
+	ImageWatermarkStr       string `json:"imageWatermarkStr"`       // 图片导出时水印文本或水印文件路径
+	ImageWatermarkDesc      string `json:"imageWatermarkDesc"`      // 图片导出时水印位置、大小和样式等
 }
 
 func NewExport() *Export {

kernel/model/export.go

@@ -20,6 +20,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"github.com/88250/pdfcpu/pkg/font"
 	"net/http"
 	"net/url"
 	"os"
@@ -781,7 +782,7 @@ func processIFrame(tree *parse.Tree) {
 	}
 }
 
-func ProcessPDF(id, p string, merge, removeAssets bool) (err error) {
+func ProcessPDF(id, p string, merge, removeAssets, watermark bool) (err error) {
 	tree, _ := loadTreeByBlockID(id)
 	if nil == tree {
 		return
@@ -810,6 +811,12 @@ func ProcessPDF(id, p string, merge, removeAssets bool) (err error) {
 		return ast.WalkContinue
 	})
 
+	pdfcpu.ConfigPath = "disable"
+	font.UserFontDir = filepath.Join(util.HomeDir, ".config", "siyuan", "fonts")
+	if mkdirErr := os.MkdirAll(font.UserFontDir, 0755); nil != mkdirErr {
+		logging.LogErrorf("mkdir [%s] failed: %s", font.UserFontDir, mkdirErr)
+		return
+	}
 	pdfCtx, ctxErr := api.ReadContextFile(p)
 	if nil != ctxErr {
 		logging.LogErrorf("read pdf context failed: %s", ctxErr)
@@ -818,7 +825,7 @@ func ProcessPDF(id, p string, merge, removeAssets bool) (err error) {
 
 	processPDFBookmarks(pdfCtx, headings)
 	processPDFLinkEmbedAssets(pdfCtx, assetDests, removeAssets)
-	processPDFWatermark(pdfCtx)
+	processPDFWatermark(pdfCtx, watermark)
 
 	pdfcpu.VersionStr = "SiYuan v" + util.Ver
 	if writeErr := api.WriteContextFile(pdfCtx, p); nil != writeErr {
@@ -828,10 +835,14 @@ func ProcessPDF(id, p string, merge, removeAssets bool) (err error) {
 	return
 }
 
-func processPDFWatermark(pdfCtx *pdfcpu.Context) {
+func processPDFWatermark(pdfCtx *pdfcpu.Context, watermark bool) {
 	// Support adding the watermark on export PDF https://github.com/siyuan-note/siyuan/issues/9961
 	// https://pdfcpu.io/core/watermark
 
+	if !watermark {
+		return
+	}
+
 	str := Conf.Export.PDFWatermarkStr
 	if "" == str {
 		return
@@ -842,9 +853,39 @@ func processPDFWatermark(pdfCtx *pdfcpu.Context) {
 	}
 
 	desc := Conf.Export.PDFWatermarkDesc
-	f, e := pdfCtx.ExtractFont(1)
-	if nil == e {
-		desc = "fontname:" + f.Name
+	descParts := strings.Split(desc, ",")
+	m := map[string]string{}
+	for _, descPart := range descParts {
+		kv := strings.Split(descPart, ":")
+		if 2 != len(kv) {
+			continue
+		}
+		m[kv[0]] = kv[1]
+	}
+	if "" == m["fontname"] {
+		m["fontname"] = "LXGW WenKai Lite"
+	}
+	descBuilder := bytes.Buffer{}
+	for k, v := range m {
+		descBuilder.WriteString(k)
+		descBuilder.WriteString(":")
+		descBuilder.WriteString(v)
+		descBuilder.WriteString(",")
+	}
+	desc = descBuilder.String()
+	desc = desc[:len(desc)-1]
+	fontPath := filepath.Join(util.AppearancePath, "fonts", "LxgwWenKai-Lite-1.311", "LXGWWenKaiLite-Regular.ttf")
+	err := api.InstallFonts([]string{fontPath})
+	if nil != err {
+		logging.LogErrorf("install font [%s] failed: %s", fontPath, err)
+	}
+	fonts, err := api.ListFonts()
+	if nil != err {
+		logging.LogErrorf("list fonts failed: %s", err)
+	} else {
+		for _, f := range fonts {
+			logging.LogInfof("installed font: %s", f)
+		}
 	}
 
 	mode := "text"
@@ -859,7 +900,6 @@ func processPDFWatermark(pdfCtx *pdfcpu.Context) {
 	logging.LogInfof("add PDF watermark [mode=%s, str=%s, desc=%s]", mode, str, desc)
 
 	var wm *pdfcpu.Watermark
-	var err error
 	switch mode {
 	case "text":
 		wm, err = pdfcpu.ParseTextWatermarkDetails(str, desc, false, pdfcpu.POINTS)