699 lines
18 KiB
TypeScript
699 lines
18 KiB
TypeScript
import { FolkShape } from "./folk-shape";
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import { css, html } from "./tags";
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const styles = css`
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:host {
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background: var(--rs-bg-surface, #fff);
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color: var(--rs-text-primary, #1e293b);
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border-radius: 8px;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
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min-width: 380px;
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min-height: 480px;
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}
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.header {
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display: flex;
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align-items: center;
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justify-content: space-between;
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padding: 8px 12px;
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background: linear-gradient(135deg, #ea580c, #f59e0b);
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color: white;
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border-radius: 8px 8px 0 0;
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font-size: 12px;
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font-weight: 600;
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cursor: move;
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}
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.header-title {
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display: flex;
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align-items: center;
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gap: 6px;
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}
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.header-actions {
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display: flex;
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gap: 4px;
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}
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.header-actions button {
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background: transparent;
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border: none;
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color: white;
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cursor: pointer;
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padding: 2px 6px;
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border-radius: 4px;
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font-size: 14px;
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}
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.header-actions button:hover {
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background: rgba(255, 255, 255, 0.2);
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}
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.wrapper {
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height: 100%;
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overflow: hidden;
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display: flex;
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flex-direction: column;
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}
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.content {
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display: flex;
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flex-direction: column;
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flex: 1;
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min-height: 0;
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overflow: hidden;
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}
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.prompt-area {
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padding: 12px;
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border-bottom: 1px solid #e2e8f0;
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}
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.prompt-input {
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width: 100%;
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padding: 10px 12px;
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border: 2px solid var(--rs-input-border, #e2e8f0);
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border-radius: 8px;
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font-size: 13px;
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resize: none;
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outline: none;
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font-family: inherit;
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background: var(--rs-input-bg, #fff);
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color: var(--rs-input-text, inherit);
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}
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.prompt-input:focus {
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border-color: #ea580c;
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}
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.controls {
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display: flex;
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gap: 8px;
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margin-top: 8px;
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}
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.generate-btn {
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flex: 1;
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padding: 8px 16px;
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background: linear-gradient(135deg, #ea580c, #f59e0b);
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color: white;
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border: none;
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border-radius: 6px;
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font-size: 13px;
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font-weight: 600;
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cursor: pointer;
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transition: opacity 0.2s;
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}
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.generate-btn:hover {
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opacity: 0.9;
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}
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.generate-btn:disabled {
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opacity: 0.5;
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cursor: not-allowed;
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}
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.tabs {
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display: flex;
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border-bottom: 1px solid #e2e8f0;
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}
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.tab {
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flex: 1;
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padding: 8px;
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text-align: center;
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font-size: 12px;
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font-weight: 600;
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color: #64748b;
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border: none;
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background: none;
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cursor: pointer;
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border-bottom: 2px solid transparent;
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transition: all 0.2s;
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}
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.tab:hover {
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color: #ea580c;
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}
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.tab.active {
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color: #ea580c;
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border-bottom-color: #ea580c;
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}
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.preview-area {
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flex: 1;
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min-height: 0;
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overflow: hidden;
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display: flex;
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flex-direction: column;
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}
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.render-preview {
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flex: 1;
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display: flex;
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align-items: center;
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justify-content: center;
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overflow: hidden;
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min-height: 0;
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position: relative;
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touch-action: none;
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cursor: grab;
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user-select: none;
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}
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.render-preview.dragging { cursor: grabbing; }
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.render-preview img {
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transform-origin: 0 0;
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border-radius: 8px;
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box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
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pointer-events: none;
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max-width: none;
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max-height: none;
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}
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.render-preview .zoom-hint {
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position: absolute;
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bottom: 8px;
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right: 8px;
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font-size: 10px;
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color: var(--rs-text-tertiary, #94a3b8);
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opacity: 0.7;
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pointer-events: none;
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}
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.render-preview .zoom-reset {
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position: absolute;
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top: 8px;
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right: 8px;
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font-size: 11px;
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padding: 3px 8px;
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border-radius: 4px;
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border: 1px solid var(--rs-border, #e2e8f0);
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background: var(--rs-bg-surface, #fff);
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color: var(--rs-text-secondary, #64748b);
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cursor: pointer;
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opacity: 0;
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transition: opacity 0.15s;
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}
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.render-preview:hover .zoom-reset { opacity: 1; }
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.render-preview .zoom-reset:hover { background: var(--rs-surface-hover, #f1f5f9); }
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.code-area {
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flex: 1;
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overflow: auto;
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padding: 12px;
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}
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.code-area pre {
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margin: 0;
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padding: 12px;
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background: #1e293b;
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color: #e2e8f0;
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border-radius: 6px;
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font-size: 11px;
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line-height: 1.5;
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overflow-x: auto;
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white-space: pre-wrap;
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word-break: break-all;
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}
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.download-row {
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display: flex;
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gap: 8px;
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padding: 8px 12px;
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border-top: 1px solid #e2e8f0;
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}
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.download-btn {
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padding: 6px 12px;
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background: #334155;
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color: white;
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border: none;
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border-radius: 6px;
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font-size: 12px;
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cursor: pointer;
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text-decoration: none;
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}
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.download-btn:hover {
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background: #475569;
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}
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.placeholder {
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flex: 1;
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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color: #94a3b8;
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text-align: center;
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gap: 8px;
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}
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.placeholder-icon {
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font-size: 48px;
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opacity: 0.5;
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}
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.loading {
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display: flex;
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flex-direction: column;
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align-items: center;
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justify-content: center;
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padding: 24px;
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gap: 12px;
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}
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.spinner {
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width: 32px;
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height: 32px;
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border: 3px solid #e2e8f0;
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border-top-color: #ea580c;
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border-radius: 50%;
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animation: spin 1s linear infinite;
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}
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@keyframes spin {
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to { transform: rotate(360deg); }
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}
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.error {
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color: #ef4444;
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padding: 12px;
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background: #fef2f2;
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border-radius: 6px;
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font-size: 13px;
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margin: 12px;
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}
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`;
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declare global {
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interface HTMLElementTagNameMap {
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"folk-blender": FolkBlender;
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}
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}
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export class FolkBlender extends FolkShape {
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static override tagName = "folk-blender";
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static {
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const sheet = new CSSStyleSheet();
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const parentRules = Array.from(FolkShape.styles.cssRules)
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.map((r) => r.cssText)
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.join("\n");
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const childRules = Array.from(styles.cssRules)
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.map((r) => r.cssText)
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.join("\n");
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sheet.replaceSync(`${parentRules}\n${childRules}`);
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this.styles = sheet;
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}
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#isLoading = false;
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#error: string | null = null;
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#prompt: string | null = null;
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#renderUrl: string | null = null;
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#script: string | null = null;
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#blendUrl: string | null = null;
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#activeTab: "preview" | "code" = "preview";
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#promptInput: HTMLTextAreaElement | null = null;
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#generateBtn: HTMLButtonElement | null = null;
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#previewArea: HTMLElement | null = null;
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#codeArea: HTMLElement | null = null;
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#downloadRow: HTMLElement | null = null;
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override createRenderRoot() {
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const root = super.createRenderRoot();
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const wrapper = document.createElement("div");
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wrapper.className = "wrapper";
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wrapper.innerHTML = html`
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<div class="header">
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<span class="header-title">
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<span>🧊</span>
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<span>3D Blender</span>
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</span>
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<div class="header-actions">
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<button class="close-btn" title="Close">×</button>
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</div>
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</div>
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<div class="content">
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<div class="prompt-area">
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<textarea class="prompt-input" placeholder="Describe the 3D scene to generate...\ne.g. 'A low-poly fox sitting on a tree stump'" rows="3"></textarea>
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<div class="controls">
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<button class="generate-btn">🧊 Generate 3D</button>
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</div>
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</div>
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<div class="tabs">
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<button class="tab active" data-tab="preview">🖼️ Render</button>
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<button class="tab" data-tab="code">📜 Script</button>
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</div>
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<div class="preview-area">
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<div class="render-preview">
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<div class="placeholder">
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<span class="placeholder-icon">🧊</span>
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<span>Describe a 3D scene and click Generate</span>
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</div>
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</div>
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<div class="code-area" style="display:none">
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<pre>// Blender Python script will appear here</pre>
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</div>
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</div>
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<div class="download-row" style="display:none">
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<a class="download-btn blend-dl" href="#" download>⬇️ .blend</a>
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</div>
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</div>
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`;
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const slot = root.querySelector("slot");
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const containerDiv = slot?.parentElement as HTMLElement;
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if (containerDiv) {
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containerDiv.replaceWith(wrapper);
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}
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this.#promptInput = wrapper.querySelector(".prompt-input");
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this.#generateBtn = wrapper.querySelector(".generate-btn");
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this.#previewArea = wrapper.querySelector(".render-preview");
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this.#codeArea = wrapper.querySelector(".code-area");
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this.#downloadRow = wrapper.querySelector(".download-row");
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const closeBtn = wrapper.querySelector(".close-btn") as HTMLButtonElement;
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// Tab switching
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wrapper.querySelectorAll(".tab").forEach((tab) => {
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tab.addEventListener("click", (e) => {
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e.stopPropagation();
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const tabName = (tab as HTMLElement).dataset.tab as "preview" | "code";
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this.#activeTab = tabName;
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wrapper.querySelectorAll(".tab").forEach((t) => t.classList.remove("active"));
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tab.classList.add("active");
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if (this.#previewArea) this.#previewArea.style.display = tabName === "preview" ? "flex" : "none";
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if (this.#codeArea) this.#codeArea.style.display = tabName === "code" ? "block" : "none";
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});
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});
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this.#generateBtn?.addEventListener("click", (e) => {
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e.stopPropagation();
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this.#generate();
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});
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this.#promptInput?.addEventListener("keydown", (e) => {
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if (e.key === "Enter" && !e.shiftKey) {
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e.preventDefault();
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this.#generate();
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}
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});
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this.#promptInput?.addEventListener("pointerdown", (e) => e.stopPropagation());
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closeBtn.addEventListener("click", (e) => {
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e.stopPropagation();
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this.dispatchEvent(new CustomEvent("close"));
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});
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// Restore persisted state
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if (this.#prompt && this.#promptInput) this.#promptInput.value = this.#prompt;
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if (this.#renderUrl || this.#script) {
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this.#renderResult();
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}
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// Health check with retry (container may still be starting)
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const checkHealth = (attempt = 0) => {
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fetch("/api/blender-gen/health").then(r => r.json()).then((h: any) => {
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if (!h.available && this.#generateBtn) {
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if (attempt < 2) { setTimeout(() => checkHealth(attempt + 1), 3000); return; }
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this.#generateBtn.disabled = true;
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this.#generateBtn.title = (h.issues || []).join(", ") || "Blender service unavailable";
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} else if (h.warnings?.length && this.#generateBtn) {
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this.#generateBtn.title = h.warnings.join(", ");
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}
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}).catch(() => {
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if (attempt < 2) { setTimeout(() => checkHealth(attempt + 1), 3000); return; }
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if (this.#generateBtn) {
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this.#generateBtn.disabled = true;
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this.#generateBtn.title = "Cannot reach Blender health endpoint";
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}
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});
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};
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checkHealth();
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return root;
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}
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async #generate() {
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const prompt = this.#promptInput?.value.trim();
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if (!prompt || this.#isLoading) return;
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this.#prompt = prompt;
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this.#isLoading = true;
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this.#error = null;
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if (this.#generateBtn) this.#generateBtn.disabled = true;
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if (this.#previewArea) {
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this.#previewArea.innerHTML = '<div class="loading"><div class="spinner"></div><span>Generating 3D scene...</span></div>';
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}
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try {
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const res = await fetch("/api/blender-gen", {
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method: "POST",
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headers: { "Content-Type": "application/json" },
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body: JSON.stringify({ prompt }),
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});
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if (!res.ok) {
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const err = await res.json().catch(() => ({ error: res.statusText }));
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throw new Error(err.error || "Generation failed");
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}
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const data = await res.json();
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this.#renderUrl = data.render_url || null;
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this.#script = data.script || null;
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this.#blendUrl = data.blend_url || null;
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this.#renderResult();
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} catch (err) {
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this.#error = err instanceof Error ? err.message : "Generation failed";
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if (this.#previewArea) {
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this.#previewArea.innerHTML = `<div class="error">${this.#escapeHtml(this.#error)}</div>`;
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}
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} finally {
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this.#isLoading = false;
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if (this.#generateBtn) this.#generateBtn.disabled = false;
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}
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}
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// Pan/zoom state
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#viewX = 0;
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#viewY = 0;
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#viewScale = 1;
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#pointers = new Map<number, { x: number; y: number }>();
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#lastPinchDist = 0;
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#viewCleanup: (() => void) | null = null;
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#renderResult() {
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if (this.#previewArea) {
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// Clean up previous listeners
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this.#viewCleanup?.();
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this.#viewCleanup = null;
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if (this.#renderUrl) {
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this.#previewArea.innerHTML = `<img src="${this.#escapeHtml(this.#renderUrl)}" alt="3D Render" /><button class="zoom-reset" title="Reset zoom">Reset</button><span class="zoom-hint">Scroll to zoom · drag to pan</span>`;
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const img = this.#previewArea.querySelector("img") as HTMLImageElement;
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const resetBtn = this.#previewArea.querySelector(".zoom-reset") as HTMLButtonElement;
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// Reset view state and fit image once loaded
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this.#viewScale = 1;
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this.#viewX = 0;
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this.#viewY = 0;
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const fitImage = () => {
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if (!this.#previewArea) return;
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const cw = this.#previewArea.clientWidth;
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const ch = this.#previewArea.clientHeight;
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const iw = img.naturalWidth || img.width;
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const ih = img.naturalHeight || img.height;
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if (!iw || !ih) return;
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this.#viewScale = Math.min(cw / iw, ch / ih, 1);
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this.#viewX = (cw - iw * this.#viewScale) / 2;
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this.#viewY = (ch - ih * this.#viewScale) / 2;
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this.#applyTransform(img);
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};
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if (img.complete) fitImage();
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else img.addEventListener("load", fitImage);
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this.#wireViewerEvents(this.#previewArea, img);
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resetBtn?.addEventListener("click", (e) => {
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e.stopPropagation();
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fitImage();
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});
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} else {
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this.#previewArea.innerHTML = '<div class="placeholder"><span class="placeholder-icon">✅</span><span>Script generated (see Script tab)</span></div>';
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}
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}
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if (this.#codeArea && this.#script) {
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this.#codeArea.innerHTML = `<pre>${this.#escapeHtml(this.#script)}</pre>`;
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}
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if (this.#downloadRow && this.#blendUrl) {
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this.#downloadRow.style.display = "flex";
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const blendLink = this.#downloadRow.querySelector(".blend-dl") as HTMLAnchorElement;
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if (blendLink) blendLink.href = this.#blendUrl;
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}
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}
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#applyTransform(img: HTMLImageElement) {
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img.style.transform = `translate(${this.#viewX}px, ${this.#viewY}px) scale(${this.#viewScale})`;
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}
|
||
|
||
#wireViewerEvents(container: HTMLElement, img: HTMLImageElement) {
|
||
let dragging = false;
|
||
let dragStartX = 0;
|
||
let dragStartY = 0;
|
||
let startViewX = 0;
|
||
let startViewY = 0;
|
||
|
||
const onPointerDown = (e: PointerEvent) => {
|
||
e.stopPropagation();
|
||
this.#pointers.set(e.pointerId, { x: e.clientX, y: e.clientY });
|
||
container.setPointerCapture(e.pointerId);
|
||
|
||
if (this.#pointers.size === 1) {
|
||
dragging = true;
|
||
dragStartX = e.clientX;
|
||
dragStartY = e.clientY;
|
||
startViewX = this.#viewX;
|
||
startViewY = this.#viewY;
|
||
container.classList.add("dragging");
|
||
} else if (this.#pointers.size === 2) {
|
||
// Start pinch
|
||
const pts = [...this.#pointers.values()];
|
||
this.#lastPinchDist = Math.hypot(pts[1].x - pts[0].x, pts[1].y - pts[0].y);
|
||
}
|
||
};
|
||
|
||
const onPointerMove = (e: PointerEvent) => {
|
||
if (!this.#pointers.has(e.pointerId)) return;
|
||
this.#pointers.set(e.pointerId, { x: e.clientX, y: e.clientY });
|
||
|
||
if (this.#pointers.size === 2) {
|
||
// Pinch zoom
|
||
const pts = [...this.#pointers.values()];
|
||
const dist = Math.hypot(pts[1].x - pts[0].x, pts[1].y - pts[0].y);
|
||
if (this.#lastPinchDist > 0) {
|
||
const ratio = dist / this.#lastPinchDist;
|
||
const cx = (pts[0].x + pts[1].x) / 2;
|
||
const cy = (pts[0].y + pts[1].y) / 2;
|
||
const rect = container.getBoundingClientRect();
|
||
const px = cx - rect.left;
|
||
const py = cy - rect.top;
|
||
this.#zoomAt(px, py, ratio, img);
|
||
}
|
||
this.#lastPinchDist = dist;
|
||
} else if (dragging && this.#pointers.size === 1) {
|
||
this.#viewX = startViewX + (e.clientX - dragStartX);
|
||
this.#viewY = startViewY + (e.clientY - dragStartY);
|
||
this.#applyTransform(img);
|
||
}
|
||
};
|
||
|
||
const onPointerUp = (e: PointerEvent) => {
|
||
this.#pointers.delete(e.pointerId);
|
||
if (this.#pointers.size < 2) this.#lastPinchDist = 0;
|
||
if (this.#pointers.size === 0) {
|
||
dragging = false;
|
||
container.classList.remove("dragging");
|
||
}
|
||
};
|
||
|
||
const onWheel = (e: WheelEvent) => {
|
||
e.preventDefault();
|
||
e.stopPropagation();
|
||
const rect = container.getBoundingClientRect();
|
||
const px = e.clientX - rect.left;
|
||
const py = e.clientY - rect.top;
|
||
const factor = e.deltaY < 0 ? 1.15 : 1 / 1.15;
|
||
this.#zoomAt(px, py, factor, img);
|
||
};
|
||
|
||
const onDblClick = (e: MouseEvent) => {
|
||
e.stopPropagation();
|
||
// Double-click to reset
|
||
const cw = container.clientWidth;
|
||
const ch = container.clientHeight;
|
||
const iw = img.naturalWidth || img.width;
|
||
const ih = img.naturalHeight || img.height;
|
||
if (!iw || !ih) return;
|
||
this.#viewScale = Math.min(cw / iw, ch / ih, 1);
|
||
this.#viewX = (cw - iw * this.#viewScale) / 2;
|
||
this.#viewY = (ch - ih * this.#viewScale) / 2;
|
||
this.#applyTransform(img);
|
||
};
|
||
|
||
container.addEventListener("pointerdown", onPointerDown);
|
||
container.addEventListener("pointermove", onPointerMove);
|
||
container.addEventListener("pointerup", onPointerUp);
|
||
container.addEventListener("pointercancel", onPointerUp);
|
||
container.addEventListener("wheel", onWheel, { passive: false });
|
||
container.addEventListener("dblclick", onDblClick);
|
||
|
||
this.#viewCleanup = () => {
|
||
container.removeEventListener("pointerdown", onPointerDown);
|
||
container.removeEventListener("pointermove", onPointerMove);
|
||
container.removeEventListener("pointerup", onPointerUp);
|
||
container.removeEventListener("pointercancel", onPointerUp);
|
||
container.removeEventListener("wheel", onWheel);
|
||
container.removeEventListener("dblclick", onDblClick);
|
||
};
|
||
}
|
||
|
||
#zoomAt(px: number, py: number, factor: number, img: HTMLImageElement) {
|
||
const newScale = Math.min(Math.max(this.#viewScale * factor, 0.1), 10);
|
||
const ratio = newScale / this.#viewScale;
|
||
this.#viewX = px - ratio * (px - this.#viewX);
|
||
this.#viewY = py - ratio * (py - this.#viewY);
|
||
this.#viewScale = newScale;
|
||
this.#applyTransform(img);
|
||
}
|
||
|
||
#escapeHtml(text: string): string {
|
||
const div = document.createElement("div");
|
||
div.textContent = text;
|
||
return div.innerHTML;
|
||
}
|
||
|
||
static override fromData(data: Record<string, any>): FolkBlender {
|
||
const shape = FolkShape.fromData(data) as FolkBlender;
|
||
if (data.prompt) shape.#prompt = data.prompt;
|
||
if (data.renderUrl) shape.#renderUrl = data.renderUrl;
|
||
if (data.script) shape.#script = data.script;
|
||
if (data.blendUrl) shape.#blendUrl = data.blendUrl;
|
||
return shape;
|
||
}
|
||
|
||
override toJSON() {
|
||
return {
|
||
...super.toJSON(),
|
||
type: "folk-blender",
|
||
prompt: this.#prompt,
|
||
renderUrl: this.#renderUrl,
|
||
script: this.#script,
|
||
blendUrl: this.#blendUrl,
|
||
};
|
||
}
|
||
|
||
override applyData(data: Record<string, any>): void {
|
||
super.applyData(data);
|
||
if ("prompt" in data) this.#prompt = data.prompt;
|
||
if ("renderUrl" in data) this.#renderUrl = data.renderUrl;
|
||
if ("script" in data) this.#script = data.script;
|
||
if ("blendUrl" in data) this.#blendUrl = data.blendUrl;
|
||
if (this.#promptInput && this.#prompt) this.#promptInput.value = this.#prompt;
|
||
if (this.#renderUrl || this.#script) {
|
||
this.#renderResult();
|
||
}
|
||
}
|
||
}
|