write_stack.json

Die JSON-Datei des Beispiels „Ein Bericht, der sich selbst setzt“. Ein Titel, eine Linie, zwei Absätze, eine Überschrift, eine Tabelle mit sechsundzwanzig Zeilen und eine Fußnote, in Lesereihenfolge übergeben und von der Engine über zwei Seiten umbrochen.

JSON 272 Zeilen

Diese Datei ist eine Anfrage: Eine Anwendung sendet sie über das Netz an den Server, der das PDF erzeugt und zurücksendet. Sie erzeugt dieselbe Seite wie die Rust- und die Python-Fassung dieses Beispiels. Eine Anfrage nennt jede Datei, die sie verwendet, nie ihren Inhalt; der Aufruf trägt die Anfrage und die Dateien zusammen. Eine Schrift, die der Server bereits vorhält, etwa DejaVuSans, wird ohne Anhang genannt. Senden Sie die Anfrage an die Adresse, die die API-Seite angibt.

Wofür dieses Beispiel da ist

Eine Seite von Hand zu setzen heißt, vor dem ersten Wort zu wissen, wie hoch jeder Absatz sein wird. Übersetzen Sie einen davon, und jede Zahl darunter ist falsch; fügen Sie einer Tabelle eine Zeile hinzu, und die Fußnote landet auf der Seitenzahl. Diese Rechnung kommt Monate später, wenn der Bericht sich ändern muss und nichts im Code sagt, welche seiner Zahlen ihn zusammenhielten.

Was dieses Beispiel zeigt

Datei herunterladen Dasselbe Beispiel in Rust Dasselbe Beispiel in Python Ansehen, was sie erzeugt 
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
{
  "items": [
    {
      "type": "stack",
      "first": { "llx": 56.0, "lly": 80.0, "urx": 539.0, "ury": 780.0 },
      "next": { "llx": 56.0, "lly": 80.0, "urx": 539.0, "ury": 780.0 },
      "blocks": [
        {
          "type": "text",
          "content": "Work carried out this quarter",
          "font": "DejaVuSans",
          "font_size": 16.0,
          "keep_together": true
        },
        { "type": "space", "height": 8.0 },
        { "type": "rule", "stroke": { "width": 1.2, "color": [0.12, 0.33, 0.55] } },
        { "type": "space", "height": 14.0 },
        {
          "type": "text",
          "content": "Every block on this page was pushed onto a stack in the order it is read, and the stack decided where each of them goes. Nothing here was placed against a measured height: a paragraph that grows pushes what follows it down the page, and onto the next one when the room runs out.",
          "font": "DejaVuSans",
          "font_size": 10.5,
          "align": "justify",
          "leading": 15.0
        },
        { "type": "space", "height": 18.0 },
        {
          "type": "text",
          "content": "What was done, task by task",
          "font": "DejaVuSans",
          "font_size": 12.0,
          "keep_together": true
        },
        { "type": "space", "height": 8.0 },
        {
          "type": "table",
          "columns": {
            "widths": [{ "fraction": 1.0 }, { "points": 70.0 }, { "points": 90.0 }],
            "total": 483.0
          },
          "header": 1,
          "rules": [
            { "rule": "frame", "stroke": { "width": 0.8 } },
            { "rule": "horizontal_other", "stroke": { "width": 0.25, "color": [0.75, 0.75, 0.75] } },
            { "rule": { "horizontal": 1 }, "stroke": { "width": 0.8 } }
          ],
          "rows": [
            {
              "min_height": 20.0,
              "cells": [
                { "content": ["Task"], "font": "DejaVuSans", "font_size": 9.0, "align": "left", "valign": "middle", "fill": [0.88, 0.88, 0.88], "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["Hours"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "valign": "middle", "fill": [0.88, 0.88, 0.88], "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["Amount"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "valign": "middle", "fill": [0.88, 0.88, 0.88], "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 01"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["2"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["170.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 02"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["3"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["255.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 03"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["4"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["340.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 04"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["5"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["425.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 05"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["6"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["510.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 06"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["2"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["170.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 07"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["3"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["255.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 08"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["4"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["340.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 09"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["5"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["425.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 10"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["6"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["510.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 11"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["2"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["170.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 12"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["3"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["255.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 13"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["4"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["340.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 14"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["5"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["425.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 15"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["6"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["510.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 16"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["2"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["170.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 17"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["3"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["255.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 18"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["4"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["340.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 19"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["5"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["425.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 20"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["6"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["510.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 21"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["2"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["170.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 22"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["3"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["255.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 23"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["4"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["340.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 24"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["5"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["425.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 25"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["6"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["510.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            },
            {
              "cells": [
                { "content": ["Task 26"], "font": "DejaVuSans", "font_size": 9.0, "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["2"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } },
                { "content": ["170.00"], "font": "DejaVuSans", "font_size": 9.0, "align": "right", "padding": { "left": 6.0, "right": 6.0, "top": 5.0, "bottom": 5.0 } }
              ]
            }
          ]
        },
        { "type": "space", "height": 18.0 },
        {
          "type": "text",
          "content": "The table above was cut wherever the room ran out, and its heading row was drawn again at the top of every page it was carried onto. This paragraph was kept together, so it is never left with a single line at the foot of a page while the rest of it starts the next one.",
          "font": "DejaVuSans",
          "font_size": 10.5,
          "align": "justify",
          "leading": 15.0,
          "keep_together": true
        },
        { "type": "space", "height": 14.0 },
        { "type": "rule", "stroke": { "width": 0.6, "color": [0.45, 0.45, 0.45] } },
        { "type": "space", "height": 8.0 },
        {
          "type": "text",
          "content": "Hours are billed at 85.00 € each, and the amounts are exclusive of tax.",
          "font": "DejaVuSans",
          "font_size": 8.0,
          "color": [0.45, 0.45, 0.45]
        }
      ]
    },
    {
      "type": "flow",
      "rect": { "llx": 56.0, "lly": 30.4, "urx": 539.0, "ury": 40.0 },
      "content": "Page {current_page} of {total_pages}",
      "font": "DejaVuSans",
      "font_size": 8.0,
      "align": "center",
      "color": [0.45, 0.45, 0.45]
    }
  ]
}