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| 1 | +package com.demcha.examples.flagships; |
| 2 | + |
| 3 | +import com.demcha.compose.GraphCompose; |
| 4 | +import com.demcha.compose.document.api.DocumentPageSize; |
| 5 | +import com.demcha.compose.document.api.DocumentSession; |
| 6 | +import com.demcha.compose.document.image.DocumentImageData; |
| 7 | +import com.demcha.compose.document.image.DocumentImageFitMode; |
| 8 | +import com.demcha.compose.document.node.TextAlign; |
| 9 | +import com.demcha.compose.document.style.ClipPolicy; |
| 10 | +import com.demcha.compose.document.style.DocumentColor; |
| 11 | +import com.demcha.compose.document.style.DocumentInsets; |
| 12 | +import com.demcha.compose.document.style.DocumentStroke; |
| 13 | +import com.demcha.compose.document.style.DocumentTextStyle; |
| 14 | +import com.demcha.compose.font.FontName; |
| 15 | +import com.demcha.examples.support.ExampleOutputPaths; |
| 16 | + |
| 17 | +import java.io.InputStream; |
| 18 | +import java.nio.file.Path; |
| 19 | +import java.util.Objects; |
| 20 | + |
| 21 | +/** |
| 22 | + * Single-page cinematic engine showcase used as the |
| 23 | + * {@code assets/readme/repository_showcase_render.png} source. NOT a |
| 24 | + * business document, NOT a CV — a brand promo page that demonstrates |
| 25 | + * the visual register the engine can hit when an author cares about |
| 26 | + * presentation as much as data: |
| 27 | + * |
| 28 | + * <ul> |
| 29 | + * <li><b>Top navy band</b> — full-width branded marquee (canonical |
| 30 | + * {@code pageBackgrounds} band fill).</li> |
| 31 | + * <li><b>Cinematic hero image</b> — pre-rendered brand artwork |
| 32 | + * (semantic graph → polished PDFs visual metaphor) mounted in a |
| 33 | + * rounded clip frame ({@code ShapeContainerNode} + |
| 34 | + * {@code ClipPolicy.CLIP_PATH}).</li> |
| 35 | + * <li><b>Magazine-headline typography</b> — three-line bold lockup |
| 36 | + * set in the canonical serif heading style.</li> |
| 37 | + * <li><b>Three KPI cards</b> — soft-panel sections with accent rules |
| 38 | + * (V2 templates count · test count · Maven Central debut).</li> |
| 39 | + * <li><b>Three-column capability grid</b> — labelled rich-text |
| 40 | + * paragraphs showcasing inline style mixing.</li> |
| 41 | + * <li><b>Footer brand stripe</b> — accent rule + brand links.</li> |
| 42 | + * </ul> |
| 43 | + * |
| 44 | + * <p>The hero image lives in {@code examples/src/main/resources/engine-hero.png} |
| 45 | + * and is loaded over the classpath so the example runs without any |
| 46 | + * filesystem path assumptions.</p> |
| 47 | + * |
| 48 | + * <p>Output: |
| 49 | + * {@code examples/target/generated-pdfs/flagships/engine-showcase.pdf} |
| 50 | + * — page 1 is rasterised by {@link com.demcha.examples.support.PdfPageRasterizer} |
| 51 | + * into {@code assets/readme/repository_showcase_render.png}.</p> |
| 52 | + * |
| 53 | + * @author Artem Demchyshyn |
| 54 | + * @since 1.6.6 |
| 55 | + */ |
| 56 | +public final class EngineShowcase { |
| 57 | + |
| 58 | + // ── Theme palette — cinematic navy + electric accent ───────── |
| 59 | + private static final DocumentColor PAPER = DocumentColor.rgb(248, 247, 242); |
| 60 | + private static final DocumentColor NAVY = DocumentColor.rgb(18, 26, 56); |
| 61 | + private static final DocumentColor NAVY_DARK = DocumentColor.rgb(10, 14, 36); |
| 62 | + private static final DocumentColor ACCENT = DocumentColor.rgb(255, 138, 36); |
| 63 | + private static final DocumentColor ACCENT_SOFT = DocumentColor.rgb(255, 198, 138); |
| 64 | + private static final DocumentColor INK = DocumentColor.rgb(20, 24, 38); |
| 65 | + private static final DocumentColor MUTED = DocumentColor.rgb(110, 116, 132); |
| 66 | + private static final DocumentColor RULE = DocumentColor.rgb(220, 218, 210); |
| 67 | + private static final DocumentColor CARD_RING = DocumentColor.rgb(232, 226, 212); |
| 68 | + private static final DocumentColor PANEL_TINT = DocumentColor.rgb(232, 234, 246); |
| 69 | + private static final DocumentColor PANEL_RING = DocumentColor.rgb(208, 214, 234); |
| 70 | + |
| 71 | + private EngineShowcase() { |
| 72 | + } |
| 73 | + |
| 74 | + public static Path generate() throws Exception { |
| 75 | + Path output = ExampleOutputPaths.prepare("flagships", "engine-showcase.pdf"); |
| 76 | + DocumentImageData hero = loadHeroImage(); |
| 77 | + |
| 78 | + try (DocumentSession document = GraphCompose.document(output) |
| 79 | + .pageSize(DocumentPageSize.A4) |
| 80 | + .pageBackground(PAPER) |
| 81 | + .margin(36, 38, 32, 38) |
| 82 | + .create()) { |
| 83 | + |
| 84 | + document.pageFlow() |
| 85 | + .name("EngineShowcase") |
| 86 | + .spacing(14) |
| 87 | + |
| 88 | + // ── Marquee band: brand + version ────────────── |
| 89 | + .addRow("Marquee", row -> row |
| 90 | + .spacing(0) |
| 91 | + .weights(1, 1) |
| 92 | + .addSection("MarqueeLeft", section -> section |
| 93 | + .addParagraph(p -> p |
| 94 | + .text("GRAPHCOMPOSE") |
| 95 | + .textStyle(bandLeft()) |
| 96 | + .margin(DocumentInsets.zero()))) |
| 97 | + .addSection("MarqueeRight", section -> section |
| 98 | + .addParagraph(p -> p |
| 99 | + .text("v1.6 · MAVEN CENTRAL") |
| 100 | + .textStyle(bandRight()) |
| 101 | + .align(TextAlign.RIGHT) |
| 102 | + .margin(DocumentInsets.zero())))) |
| 103 | + |
| 104 | + // ── Thin orange rule ────────────────────────── |
| 105 | + .addShape(s -> s.size(516, 1.2).fillColor(ACCENT) |
| 106 | + .margin(DocumentInsets.zero())) |
| 107 | + |
| 108 | + // ── Hero frame with cinematic engine image ──── |
| 109 | + .addContainer(frame -> frame |
| 110 | + .name("HeroFrame") |
| 111 | + .roundedRect(516, 280, 14) |
| 112 | + .fillColor(NAVY_DARK) |
| 113 | + .stroke(DocumentStroke.of(ACCENT, 2.5)) |
| 114 | + .clipPolicy(ClipPolicy.CLIP_PATH) |
| 115 | + .center(new com.demcha.compose.document.dsl.ImageBuilder() |
| 116 | + .name("HeroImage") |
| 117 | + .source(hero) |
| 118 | + .size(512, 276) |
| 119 | + .fitMode(DocumentImageFitMode.COVER) |
| 120 | + .build())) |
| 121 | + |
| 122 | + // ── Magazine-headline lockup ────────────────── |
| 123 | + .addSection("Lockup", section -> section |
| 124 | + .padding(new DocumentInsets(8, 4, 0, 4)) |
| 125 | + .spacing(2) |
| 126 | + .addParagraph(p -> p |
| 127 | + .text("One engine.") |
| 128 | + .textStyle(headline()) |
| 129 | + .margin(DocumentInsets.zero())) |
| 130 | + .addParagraph(p -> p |
| 131 | + .text("Every PDF you ship.") |
| 132 | + .textStyle(headlineAccent()) |
| 133 | + .margin(DocumentInsets.zero())) |
| 134 | + .addParagraph(p -> p |
| 135 | + .text("A declarative Java engine for production PDFs. Semantic graph compiles to deterministic layout, paginates predictably, and renders through PDFBox — without leaking PDFBox into your app.") |
| 136 | + .textStyle(tagline()) |
| 137 | + .lineSpacing(1.35) |
| 138 | + .margin(new DocumentInsets(6, 0, 0, 0)))) |
| 139 | + |
| 140 | + // ── Three KPI cards — engine capability counts ─ |
| 141 | + .addRow("KpiRow", row -> row |
| 142 | + .spacing(12) |
| 143 | + .weights(1, 1, 1) |
| 144 | + .addSection("KpiPresets", section -> kpiCard(section, |
| 145 | + "31", "V2 Presets", |
| 146 | + "Layered CV + cover-letter preset architecture — data · theme · components · widgets, swap one without rewriting the others.")) |
| 147 | + .addSection("KpiTests", section -> kpiCard(section, |
| 148 | + "1,033", "Tests · 0 failures", |
| 149 | + "Snapshot baselines, japicmp binary-compat gate, parallel-session stress harness, JMH benchmark suite.")) |
| 150 | + .addSection("KpiNodes", section -> kpiCard(section, |
| 151 | + "17", "Semantic Primitives", |
| 152 | + "Modules, sections, paragraphs, lists, tables, rows, shapes, images — every node is themable and snapshot-tested."))) |
| 153 | + |
| 154 | + // ── Capability columns ──────────────────────── |
| 155 | + .addRow("Capabilities", row -> row |
| 156 | + .spacing(14) |
| 157 | + .weights(1, 1, 1) |
| 158 | + .addSection("CapDsl", section -> capabilityColumn(section, |
| 159 | + "DECLARATIVE BY DESIGN", |
| 160 | + "Compose by intent — modules, sections, rows. Zero PDFBox imports in your application code.")) |
| 161 | + .addSection("CapDeterm", section -> capabilityColumn(section, |
| 162 | + "DETERMINISTIC RENDER", |
| 163 | + "Identical input, identical PDF — byte-comparable. Layout snapshots, JMH-benchmarked hot paths.")) |
| 164 | + .addSection("CapTheme", section -> capabilityColumn(section, |
| 165 | + "CINEMATIC THEMING", |
| 166 | + "BusinessTheme · CvTheme palettes, component-level tokens, v2 layered preset architecture."))) |
| 167 | + |
| 168 | + // ── Footer brand stripe ─────────────────────── |
| 169 | + .addShape(s -> s.size(516, 0.6).fillColor(RULE) |
| 170 | + .margin(new DocumentInsets(8, 0, 0, 0))) |
| 171 | + .addRow("Footer", row -> row |
| 172 | + .spacing(0) |
| 173 | + .weights(2, 1) |
| 174 | + .addSection("FooterLeft", section -> section |
| 175 | + .addParagraph(p -> p |
| 176 | + .text("graphcompose.dev · github.com/DemchaAV/GraphCompose") |
| 177 | + .textStyle(footer()) |
| 178 | + .margin(DocumentInsets.zero()))) |
| 179 | + .addSection("FooterRight", section -> section |
| 180 | + .addParagraph(p -> p |
| 181 | + .text("Java · PDFBox · MIT") |
| 182 | + .textStyle(footer()) |
| 183 | + .align(TextAlign.RIGHT) |
| 184 | + .margin(DocumentInsets.zero())))) |
| 185 | + |
| 186 | + .build(); |
| 187 | + |
| 188 | + document.buildPdf(); |
| 189 | + } |
| 190 | + return output; |
| 191 | + } |
| 192 | + |
| 193 | + private static DocumentImageData loadHeroImage() throws Exception { |
| 194 | + try (InputStream is = Objects.requireNonNull( |
| 195 | + EngineShowcase.class.getResourceAsStream("/engine-hero.png"), |
| 196 | + "engine-hero.png missing from examples/src/main/resources/")) { |
| 197 | + return DocumentImageData.fromBytes(is.readAllBytes()); |
| 198 | + } |
| 199 | + } |
| 200 | + |
| 201 | + // ── Helpers ────────────────────────────────────────────────── |
| 202 | + |
| 203 | + private static void kpiCard(com.demcha.compose.document.dsl.SectionBuilder section, |
| 204 | + String value, String label, String detail) { |
| 205 | + section |
| 206 | + .softPanel(DocumentColor.WHITE, 8, 12) |
| 207 | + .stroke(DocumentStroke.of(CARD_RING, 0.5)) |
| 208 | + .spacing(2) |
| 209 | + .addParagraph(p -> p |
| 210 | + .text(value) |
| 211 | + .textStyle(kpiValue()) |
| 212 | + .margin(DocumentInsets.zero())) |
| 213 | + .addParagraph(p -> p |
| 214 | + .text(label) |
| 215 | + .textStyle(kpiLabel()) |
| 216 | + .margin(new DocumentInsets(0, 0, 0, 0))) |
| 217 | + .addParagraph(p -> p |
| 218 | + .text(detail) |
| 219 | + .textStyle(kpiDetail()) |
| 220 | + .lineSpacing(1.25) |
| 221 | + .margin(new DocumentInsets(4, 0, 0, 0))); |
| 222 | + } |
| 223 | + |
| 224 | + private static void capabilityColumn(com.demcha.compose.document.dsl.SectionBuilder section, |
| 225 | + String label, String prose) { |
| 226 | + section |
| 227 | + .softPanel(PANEL_TINT, 6, 0) |
| 228 | + .stroke(DocumentStroke.of(PANEL_RING, 0.5)) |
| 229 | + .accentLeft(ACCENT, 3.0f) |
| 230 | + .padding(new DocumentInsets(12, 12, 12, 16)) |
| 231 | + .spacing(3) |
| 232 | + .addParagraph(p -> p |
| 233 | + .text(label) |
| 234 | + .textStyle(capLabel()) |
| 235 | + .margin(DocumentInsets.zero())) |
| 236 | + .addParagraph(p -> p |
| 237 | + .text(prose) |
| 238 | + .textStyle(capProse()) |
| 239 | + .lineSpacing(1.3) |
| 240 | + .margin(new DocumentInsets(2, 0, 0, 0))); |
| 241 | + } |
| 242 | + |
| 243 | + // ── Text styles ────────────────────────────────────────────── |
| 244 | + |
| 245 | + private static DocumentTextStyle bandLeft() { |
| 246 | + return DocumentTextStyle.builder() |
| 247 | + .fontName(FontName.HELVETICA_BOLD) |
| 248 | + .size(10) |
| 249 | + .color(NAVY) |
| 250 | + .build(); |
| 251 | + } |
| 252 | + |
| 253 | + private static DocumentTextStyle bandRight() { |
| 254 | + return DocumentTextStyle.builder() |
| 255 | + .fontName(FontName.HELVETICA) |
| 256 | + .size(9) |
| 257 | + .color(MUTED) |
| 258 | + .build(); |
| 259 | + } |
| 260 | + |
| 261 | + private static DocumentTextStyle headline() { |
| 262 | + return DocumentTextStyle.builder() |
| 263 | + .fontName(FontName.TIMES_BOLD) |
| 264 | + .size(38) |
| 265 | + .color(INK) |
| 266 | + .build(); |
| 267 | + } |
| 268 | + |
| 269 | + private static DocumentTextStyle headlineAccent() { |
| 270 | + return DocumentTextStyle.builder() |
| 271 | + .fontName(FontName.TIMES_BOLD_ITALIC) |
| 272 | + .size(38) |
| 273 | + .color(ACCENT) |
| 274 | + .build(); |
| 275 | + } |
| 276 | + |
| 277 | + private static DocumentTextStyle tagline() { |
| 278 | + return DocumentTextStyle.builder() |
| 279 | + .fontName(FontName.HELVETICA) |
| 280 | + .size(11) |
| 281 | + .color(INK) |
| 282 | + .build(); |
| 283 | + } |
| 284 | + |
| 285 | + private static DocumentTextStyle kpiValue() { |
| 286 | + return DocumentTextStyle.builder() |
| 287 | + .fontName(FontName.TIMES_BOLD) |
| 288 | + .size(26) |
| 289 | + .color(NAVY) |
| 290 | + .build(); |
| 291 | + } |
| 292 | + |
| 293 | + private static DocumentTextStyle kpiLabel() { |
| 294 | + return DocumentTextStyle.builder() |
| 295 | + .fontName(FontName.HELVETICA_BOLD) |
| 296 | + .size(9) |
| 297 | + .color(ACCENT) |
| 298 | + .build(); |
| 299 | + } |
| 300 | + |
| 301 | + private static DocumentTextStyle kpiDetail() { |
| 302 | + return DocumentTextStyle.builder() |
| 303 | + .fontName(FontName.HELVETICA) |
| 304 | + .size(8) |
| 305 | + .color(MUTED) |
| 306 | + .build(); |
| 307 | + } |
| 308 | + |
| 309 | + private static DocumentTextStyle capLabel() { |
| 310 | + return DocumentTextStyle.builder() |
| 311 | + .fontName(FontName.HELVETICA_BOLD) |
| 312 | + .size(9) |
| 313 | + .color(NAVY) |
| 314 | + .build(); |
| 315 | + } |
| 316 | + |
| 317 | + private static DocumentTextStyle capProse() { |
| 318 | + return DocumentTextStyle.builder() |
| 319 | + .fontName(FontName.HELVETICA) |
| 320 | + .size(9) |
| 321 | + .color(INK) |
| 322 | + .build(); |
| 323 | + } |
| 324 | + |
| 325 | + private static DocumentTextStyle footer() { |
| 326 | + return DocumentTextStyle.builder() |
| 327 | + .fontName(FontName.HELVETICA) |
| 328 | + .size(8) |
| 329 | + .color(MUTED) |
| 330 | + .build(); |
| 331 | + } |
| 332 | + |
| 333 | + public static void main(String[] args) throws Exception { |
| 334 | + System.out.println("Generated: " + generate()); |
| 335 | + } |
| 336 | +} |
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