Generate themed Mermaid flowchart diagrams from putior workflow data. Covers theme selection (9 themes including 4 colorblind-safe), output modes (console, file, clipboard, raw), interactive features (clickable nodes, source info), and embedding in README, Quarto, and R Markdown. Use after annotating source files and ready to produce a visual diagram, when regenerating a diagram after workflow changes, or when switching themes or output formats for different audiences.
Scanned 9/3/2026
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---
name: generate-workflow-diagram
locale: wenyan-lite
source_locale: en
source_commit: 82c77053
translator: "Julius Brussee homage — caveman"
translation_date: "2026-04-24"
description: >
Generate themed Mermaid flowchart diagrams from putior workflow data.
Covers theme selection (9 themes including 4 colorblind-safe), output
modes (console, file, clipboard, raw), interactive features (clickable
nodes, source info), and embedding in README, Quarto, and R Markdown.
Use after annotating source files and ready to produce a visual diagram,
when regenerating a diagram after workflow changes, or when switching
themes or output formats for different audiences.
license: MIT
allowed-tools: Read Write Edit Bash Grep Glob
metadata:
author: Philipp Thoss
version: "1.0"
domain: workflow-visualization
complexity: basic
language: R
tags: putior, mermaid, diagram, theme, visualization, flowchart
---
# 生工作流程圖
自 putior 工作流程資料生帶主題之 Mermaid 流程圖並嵌於文件。
## 適用時機
- 已註源檔後欲產視覺圖
- 工作流程變更後重生圖
- 為不同讀者換主題或輸出格式
- 於 README、Quarto 或 R Markdown 中嵌工作流程圖
## 輸入
- **必要**:`put()`、`put_auto()` 或 `put_merge()` 之工作流程資料
- **選擇性**:主題名(預設:`"light"`;選項:light、dark、auto、minimal、github、viridis、magma、plasma、cividis)
- **選擇性**:輸出目標:主控台、檔案路徑、剪貼簿或原始字串
- **選擇性**:互動特徵:`show_source_info`、`enable_clicks`
## 步驟
### 步驟一:提取工作流程資料
自三源之一取工作流程資料。
```r
library(putior)
# From manual annotations
workflow <- put("./src/")
# From manual annotations, excluding specific files
workflow <- put("./src/", exclude = c("build-workflow\\.R$", "test_"))
# From auto-detection only
workflow <- put_auto("./src/")
# From merged (manual + auto)
workflow <- put_merge("./src/", merge_strategy = "supplement")
```
工作流程資料框可含自註解而來之 `node_type` 欄。節點類型控 Mermaid 形狀:
| `node_type` | Mermaid 形狀 | 用例 |
|---|---|---|
| `"input"` | 體育場 `([...])` | 資料源、配置檔 |
| `"output"` | 子程序 `[[...]]` | 生成工件、報告 |
| `"process"` | 矩形 `[...]` | 處理步驟(預設) |
| `"decision"` | 菱形 `{...}` | 條件邏輯、分支 |
| `"start"` / `"end"` | 體育場 `([...])` | 入/終節點 |
每 `node_type` 亦得對應 CSS 類(如 `class nodeId input;`)以供主題式樣設。
**預期:** 資料框至少一列,含 `id`、`label` 及可選 `input`、`output`、`source_file`、`node_type` 欄。
**失敗時:** 若資料框空,則無註解或模式得。先執行 `analyze-codebase-workflow`,或以 `put("./src/", validate = TRUE)` 核註解語法有效。
### 步驟二:擇主題與選項
擇合目標讀者之主題。
列所有可用主題:
```r
get_diagram_themes()
```
標準主題
- "light" — 預設,明色
- "dark" — 暗模式環境
- "auto" — GitHub 自適應實色
- "minimal" — 灰階,宜列印
- "github" — 為 GitHub README 優化
色盲安全主題(viridis 家族)
- "viridis" — 紫→藍→綠→黃,通用可及性
- "magma" — 紫→紅→黃,列印高對比
- "plasma" — 紫→粉→橙→黃,簡報
- "cividis" — 藍→灰→黃,最大可及性(無紅綠)
附加參數:
- `direction`:圖流向——`"TD"`(上下,預設)、`"LR"`(左右)、`"RL"`、`"BT"`
- `show_artifacts`:`TRUE`/`FALSE`——示工件節點(檔、資料);大工作流程可吵(如十六加附加節點)
- `show_workflow_boundaries`:`TRUE`/`FALSE`——於 Mermaid 子圖中包每源檔之節點
- `source_info_style`:源檔資訊於節點上之顯示法(如副標)
- `node_labels`:節點標籤文字之格式
**預期:** 主題名印出。依情境擇一。
**失敗時:** 若主題名未識,`put_diagram()` 退至 `"light"`。核拼字。
### 步驟三:以 `put_theme()` 自訂調色盤(選擇性)
若九內建主題不配專案調色盤,以 `put_theme()` 建自訂主題。
```r
# Create custom palette — unspecified types inherit from base theme
cyberpunk <- put_theme(
base = "dark",
input = c(fill = "#1a1a2e", stroke = "#00ff88", color = "#00ff88"),
process = c(fill = "#16213e", stroke = "#44ddff", color = "#44ddff"),
output = c(fill = "#0f3460", stroke = "#ff3366", color = "#ff3366"),
decision = c(fill = "#1a1a2e", stroke = "#ffaa33", color = "#ffaa33")
)
# Use the palette parameter (overrides theme when provided)
mermaid_content <- put_diagram(workflow, palette = cyberpunk, output = "raw")
writeLines(mermaid_content, "workflow.mmd")
```
`put_theme()` 接受 `input`、`process`、`output`、`decision`、`artifact`、`start`、`end` 節點類型。各取具名向量 `c(fill = "#hex", stroke = "#hex", color = "#hex")`。未設類型繼承自 `base` 主題。
**預期:** Mermaid 輸出含自訂 classDef 行。自 `node_type` 之節點形狀保留;僅色變。所有節點類型用 `stroke-width:2px`——`put_theme()` 目前不支援覆寫。
**失敗時:** 若調色盤物件非 `putior_theme` 類,`put_diagram()` 引描述性錯。確傳 `put_theme()` 之返回值,非原始列表。
**退路——手動 classDef 替換:** 為超越 `put_theme()` 之細粒度控制(如每類型筆寬),以基主題生成並手動替換 classDef 行:
```r
mermaid_content <- put_diagram(workflow, theme = "dark", output = "raw")
lines <- strsplit(mermaid_content, "\n")[[1]]
lines <- lines[!grepl("^\\s*classDef ", lines)]
custom_defs <- c(" classDef input fill:#1a1a2e,stroke:#00ff88,stroke-width:3px,color:#00ff88")
mermaid_content <- paste(c(lines, custom_defs), collapse = "\n")
```
### 步驟四:生 Mermaid 輸出
以所欲輸出模式產圖。
```r
# Print to console (default)
cat(put_diagram(workflow, theme = "github"))
# Save to file
writeLines(put_diagram(workflow, theme = "github"), "docs/workflow.md")
# Get raw string for embedding
mermaid_code <- put_diagram(workflow, output = "raw", theme = "github")
# With source file info (shows which file each node comes from)
cat(put_diagram(workflow, theme = "github", show_source_info = TRUE))
# With clickable nodes (for VS Code, RStudio, or file:// protocol)
cat(put_diagram(workflow,
theme = "github",
enable_clicks = TRUE,
click_protocol = "vscode" # or "rstudio", "file"
))
# Full-featured
cat(put_diagram(workflow,
theme = "viridis",
show_source_info = TRUE,
enable_clicks = TRUE,
click_protocol = "vscode"
))
```
**預期:** 有效 Mermaid 代碼以 `flowchart TD`(或依方向之 `LR`)始。節點以箭頭示資料流連。
**失敗時:** 若輸出為 `flowchart TD` 無節點,工作流程資料框空。若連結缺,核輸出檔名於節點間配合輸入檔名。
### 步驟五:嵌於目標文件
將圖插入合宜文件格式。
**GitHub README(```mermaid 代碼圍欄):**
````markdown
## Workflow
```mermaid
flowchart TD
A["Extract Data"] --> B["Transform"]
B --> C["Load"]
```
````
**Quarto 文件(經 knit_child 之原生 mermaid 段):**
```r
# Chunk 1: Generate code (visible, foldable)
workflow <- put("./src/")
mermaid_code <- put_diagram(workflow, output = "raw", theme = "github")
```
```r
# Chunk 2: Output as native mermaid chunk (hidden)
#| output: asis
#| echo: false
mermaid_chunk <- paste0("```{mermaid}\n", mermaid_code, "\n```")
cat(knitr::knit_child(text = mermaid_chunk, quiet = TRUE))
```
**R Markdown(以 mermaid.js CDN 或 DiagrammeR):**
```r
DiagrammeR::mermaid(put_diagram(workflow, output = "raw"))
```
**預期:** 圖於目標格式正確渲染。GitHub 原生渲染 mermaid 代碼圍欄。
**失敗時:** 若 GitHub 不渲染圖,確代碼圍欄用確切 ` ```mermaid `(無附屬)。Quarto 須用 `knit_child()` 法,因 `{mermaid}` 段中直接變數插值不支援。
## 驗證
- [ ] `put_diagram()` 產有效 Mermaid 代碼(以 `flowchart` 始)
- [ ] 所有預期節點現於圖
- [ ] 已連節點間有資料流連結(箭頭)
- [ ] 所擇主題已施(核輸出之 init 區塊主題專屬色)
- [ ] 圖於目標格式(GitHub、Quarto 等)正確渲染
## 常見陷阱
- **空圖**:通常示 `put()` 返回無列。核註解存且語法有效。
- **所有節點脫離**:輸出檔名須確配輸入檔名(含副檔名)putior 方能繪連結。`data.csv` 與 `Data.csv` 為不同。
- **GitHub 上主題不可見**:GitHub 之 mermaid 渲染器主題支援有限。`"github"` 主題為 GitHub 渲染所特別設計。`%%{init:...}%%` 主題區塊恐為部分渲染器忽略。
- **Quarto mermaid 變數插值**:Quarto 之 `{mermaid}` 段不支援 R 變數直接。用步驟五所述 `knit_child()` 技法。
- **可點節點不工作**:點擊指令需支援 Mermaid 互動事件之渲染器。GitHub 之靜態渲染器不支援點擊。用本地 Mermaid 渲染器或 putior Shiny 沙箱。
- **自參考元管線檔**:掃含生圖之建置腳本之目錄致重複子圖 ID 與 Mermaid 錯。用 `exclude` 參數於掃描時略之:
```r
workflow <- put("./src/", exclude = c("build-workflow\\.R$", "build-workflow\\.js$"))
```
- **`show_artifacts = TRUE` 過吵**:大專案可生多工件節點(十至二十加),雜亂圖。用 `show_artifacts = FALSE` 並賴 `node_type` 註解明標關鍵輸入/輸出。
## 相關技能
- `annotate-source-files` — 前提:生圖前檔須已註
- `analyze-codebase-workflow` — 自動偵測可補手動註解
- `setup-putior-ci` — 於 CI/CD 中自動重生圖
- `create-quarto-report` — 於 Quarto 報告中嵌圖
- `build-pkgdown-site` — 於 pkgdown 文件站中嵌圖
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