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Feat: Add Tiling Watermark support for Text and Image modes #80

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Feat: Add Tiling Watermark support for Text and Image modes #80

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71 changes: 56 additions & 15 deletions src/pages/Watermark/Watermark.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,11 @@ export function Watermark() {
fontSize: 60,
rotation: 45,
offsetX: 0,
offsetY: 0
offsetY: 0,
tile: false,
tileSpacingX: 200,
tileSpacingY: 150,
tileStagger: false,
});

const [watermarkMode, setWatermarkMode] = useState("text");
Expand Down Expand Up @@ -239,20 +243,22 @@ export function Watermark() {
<h3>Style & Position</h3>
</div>

<div className="space-y-2">
<label className="text-xs text-zinc-500 uppercase tracking-wider">Position</label>
<select
value={options.position}
onChange={(e) => updateOption("position", e.target.value)}
className="w-full h-10 px-3 bg-black border border-white/10 text-white rounded-lg outline-none"
>
<option value="center">Center</option>
<option value="top-left">Top Left</option>
<option value="top-right">Top Right</option>
<option value="bottom-left">Bottom Left</option>
<option value="bottom-right">Bottom Right</option>
</select>
</div>
{!options.tile && (
<div className="space-y-2">
<label className="text-xs text-zinc-500 uppercase tracking-wider">Position</label>
<select
value={options.position}
onChange={(e) => updateOption("position", e.target.value)}
className="w-full h-10 px-3 bg-black border border-white/10 text-white rounded-lg outline-none"
>
<option value="center">Center</option>
<option value="top-left">Top Left</option>
<option value="top-right">Top Right</option>
<option value="bottom-left">Bottom Left</option>
<option value="bottom-right">Bottom Right</option>
</select>
</div>
)}

<div className="grid grid-cols-2 gap-4">
{watermarkMode === "text" && (
Expand Down Expand Up @@ -301,6 +307,41 @@ export function Watermark() {
/>
</div>
</div>
<div className="pt-4 border-t border-white/10 space-y-4">
<div className="flex items-center justify-between">
<span className="text-xs text-zinc-500 uppercase tracking-wider font-medium">Tile Watermark</span>
<button onClick={() => updateOption("tile", !options.tile)}
className={`w-11 h-6 rounded-full transition-colors ${options.tile ? "bg-white" : "bg-zinc-700"}`}>
<span className={`block w-4 h-4 rounded-full bg-black mx-auto transition-transform ${options.tile ? "translate-x-2.5" : "-translate-x-2.5"}`} />
</button>
</div>

{options.tile && (
<div className="space-y-4">
<div className="grid grid-cols-2 gap-4">
<div className="space-y-2">
<label className="text-xs text-zinc-500 uppercase">Spacing X: {options.tileSpacingX}px</label>
<input type="range" min="80" max="400" value={options.tileSpacingX}
onChange={(e) => updateOption("tileSpacingX", parseInt(e.target.value))}
className="w-full h-1.5 bg-zinc-800 rounded-lg appearance-none cursor-pointer accent-white" />
</div>
<div className="space-y-2">
<label className="text-xs text-zinc-500 uppercase">Spacing Y: {options.tileSpacingY}px</label>
<input type="range" min="80" max="400" value={options.tileSpacingY}
onChange={(e) => updateOption("tileSpacingY", parseInt(e.target.value))}
className="w-full h-1.5 bg-zinc-800 rounded-lg appearance-none cursor-pointer accent-white" />
</div>
</div>
<div className="flex items-center justify-between">
<span className="text-xs text-zinc-500 uppercase tracking-wider">Stagger Rows</span>
<button onClick={() => updateOption("tileStagger", !options.tileStagger)}
className={`w-11 h-6 rounded-full transition-colors ${options.tileStagger ? "bg-white" : "bg-zinc-700"}`}>
<span className={`block w-4 h-4 rounded-full bg-black mx-auto transition-transform ${options.tileStagger ? "translate-x-2.5" : "-translate-x-2.5"}`} />
</button>
</div>
</div>
)}
</div>
</div>
</div>
)}
Expand Down
170 changes: 107 additions & 63 deletions src/services/pdf.service.js
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Original file line number Diff line number Diff line change
Expand Up @@ -97,6 +97,10 @@ export const addWatermark = async (file, watermarkText = "CONFIDENTIAL", options
offsetX = 0,
offsetY = 0,
imageScale = 0.4,
tile = false,
tileSpacingX = 200,
tileSpacingY = 150,
tileStagger = false,
} = options;

const arrayBuffer = await file.arrayBuffer();
Expand Down Expand Up @@ -128,80 +132,120 @@ export const addWatermark = async (file, watermarkText = "CONFIDENTIAL", options
const scale = targetW / imgW;
const targetH = imgH * scale;

const margin = 40;
let x, y;
if (tile) {
const cols = Math.ceil(pageW / tileSpacingX) + 1;
const rows = Math.ceil(pageH / tileSpacingY) + 1;

for (let row = 0; row < rows; row++) {
for (let col = 0; col < cols; col++) {
const staggerOffset = tileStagger && row % 2 !== 0 ? tileSpacingX / 2 : 0;
page.drawImage(embeddedImage, {
x: col * tileSpacingX + staggerOffset + Number(offsetX),
y: row * tileSpacingY + Number(offsetY),
width: targetW,
height: targetH,
opacity: parseFloat(opacity),
});
}
}
} else {
const margin = 40;
let x, y;

switch (position) {
case "top-left":
x = margin; y = pageH - margin - targetH; break;
case "top-right":
x = pageW - margin - targetW; y = pageH - margin - targetH; break;
case "bottom-left":
x = margin; y = margin; break;
case "bottom-right":
x = pageW - margin - targetW; y = margin; break;
case "center":
default:
x = (pageW - targetW) / 2;
y = (pageH - targetH) / 2;
break;
}

page.drawImage(embeddedImage, {
x: x + Number(offsetX),
y: y + Number(offsetY),
width: targetW,
height: targetH,
opacity: parseFloat(opacity),
})
}

})

} else {

pages.forEach((page) => {
const { width, height } = page.getSize();

if (tile) {
const cols = Math.ceil(width / tileSpacingX) + 1;
const rows = Math.ceil(height / tileSpacingY) + 1;

for (let row = 0; row < rows; row++) {
for (let col = 0; col < cols; col++) {
const staggerOffset = tileStagger && row % 2 !== 0 ? tileSpacingX / 2 : 0;
page.drawText(watermarkText, {
x: col * tileSpacingX + staggerOffset + Number(offsetX),
y: height - (row * tileSpacingY) + Number(offsetY),
size: fontSize,
font: helveticaFont,
color: rgb(0.5, 0.5, 0.5),
opacity: parseFloat(opacity),
rotate: degrees(rotation),
});
}
}
} else {
const textWidth = helveticaFont.widthOfTextAtSize(watermarkText, fontSize);
const textHeight = helveticaFont.heightAtSize(fontSize);

// Convert degrees to radians for math
const rad = (rotation * Math.PI) / 180;

let x, y;
const margin = 40;

switch (position) {
case "top-left":
x = margin; y = pageH - margin - targetH; break;
x = margin;
y = height - margin - textHeight;
break;
case "top-right":
x = pageW - margin - targetW; y = pageH - margin - targetH; break;
x = width - margin - textWidth;
y = height - margin - textHeight;
break;
case "bottom-left":
x = margin; y = margin; break;
x = margin;
y = margin;
break;
case "bottom-right":
x = pageW - margin - targetW; y = margin; break;
x = width - margin - textWidth;
y = margin;
break;
case "center":
default:
x = (pageW - targetW) / 2;
y = (pageH - targetH) / 2;
x = (width / 2) - (Math.cos(rad) * textWidth / 2) + (Math.sin(rad) * textHeight / 2);
y = (height / 2) - (Math.sin(rad) * textWidth / 2) - (Math.cos(rad) * textHeight / 2);
break;
}

page.drawImage(embeddedImage, {
x: x + Number(offsetX),
y: y + Number(offsetY),
width: targetW,
height: targetH,
opacity: parseFloat(opacity),
})
})

} else {

pages.forEach((page) => {
const { width, height } = page.getSize();
const textWidth = helveticaFont.widthOfTextAtSize(watermarkText, fontSize);
const textHeight = helveticaFont.heightAtSize(fontSize);

// Convert degrees to radians for math
const rad = (rotation * Math.PI) / 180;

let x, y;
const margin = 40;

switch (position) {
case "top-left":
x = margin;
y = height - margin - textHeight;
break;
case "top-right":
x = width - margin - textWidth;
y = height - margin - textHeight;
break;
case "bottom-left":
x = margin;
y = margin;
break;
case "bottom-right":
x = width - margin - textWidth;
y = margin;
break;
case "center":
default:
x = (width / 2) - (Math.cos(rad) * textWidth / 2) + (Math.sin(rad) * textHeight / 2);
y = (height / 2) - (Math.sin(rad) * textWidth / 2) - (Math.cos(rad) * textHeight / 2);
break;
}
page.drawText(watermarkText, {
x: x + Number(offsetX),
y: y + Number(offsetY),
size: fontSize,
font: helveticaFont,
color: rgb(0.5, 0.5, 0.5),
opacity: parseFloat(opacity),
rotate: degrees(rotation),
});
}

page.drawText(watermarkText, {
x: x + Number(offsetX),
y: y + Number(offsetY),
size: fontSize,
font: helveticaFont,
color: rgb(0.5, 0.5, 0.5),
opacity: parseFloat(opacity),
rotate: degrees(rotation),
});
});
}

Expand Down
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