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Implement importing GIMP and .hex palettes.

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Theo Cavignac 2022-12-22 21:17:49 +01:00 committed by Théo Cavignac
parent 5d55425e83
commit 845e384ae0
2 changed files with 89 additions and 20 deletions
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105
js/FileManager.js
View File

@ -295,28 +295,42 @@ const FileManager = (() => {
function loadPalette() {
if (browsePaletteHolder.files && browsePaletteHolder.files[0]) {
//make sure file is allowed filetype
var fileContentType = browsePaletteHolder.files[0].type;
if (fileContentType == 'image/png' || fileContentType == 'image/gif') {
let file = browsePaletteHolder.files[0];
var fileContentType =
file.type
|| file.name.split('.').slice(-1)[0];
var fileReader = new FileReader();
let addPalette = (colors) => {
//add to palettes so that it can be loaded when they click okay
palettes['Loaded palette'] = {};
palettes['Loaded palette'].colors = colors;
Util.setText('palette-button', 'Loaded palette');
Util.setText('palette-button-splash', 'Loaded palette');
Util.toggle('palette-menu-splash');
}
switch (fileContentType) {
case 'image/png':
case 'image/gif':
//load file
var fileReader = new FileReader();
fileReader.onload = function(e) {
var img = new Image();
img.onload = function() {
//draw image onto the temporary canvas
var loadPaletteCanvas = document.getElementById('load-palette-canvas-holder');
var loadPaletteContext = loadPaletteCanvas.getContext('2d');
loadPaletteCanvas.width = img.width;
loadPaletteCanvas.height = img.height;
loadPaletteContext.drawImage(img, 0, 0);
//create array to hold found colors
var colorPalette = [];
var imagePixelData = loadPaletteContext.getImageData(0,0,this.width, this.height).data;
//loop through pixels looking for colors to add to palette
for (var i = 0; i < imagePixelData.length; i += 4) {
const newColor = {r:imagePixelData[i],g:imagePixelData[i + 1],b:imagePixelData[i + 2]};
@ -325,19 +339,74 @@ const FileManager = (() => {
colorPalette.push(color);
}
}
//add to palettes so that it can be loaded when they click okay
palettes['Loaded palette'] = {};
palettes['Loaded palette'].colors = colorPalette;
Util.setText('palette-button', 'Loaded palette');
Util.setText('palette-button-splash', 'Loaded palette');
Util.toggle('palette-menu-splash');
addPalette(colorPalette);
};
img.src = e.target.result;
};
fileReader.readAsDataURL(browsePaletteHolder.files[0]);
break;
case 'gpl':
fileReader.onload = function() {
file.text().then((content) => {
let colorPalette = content.split(/\r?\n/)
// Skip header line
.slice(1)
.map((line) => line.trim())
.filter((line) => line != "")
// discard comment lines
.filter((line) => !line.startsWith('#'))
// discard meta data lines
.filter((line) => !line.includes(':'))
.map((line) => {
let components = line.split(/\s+/);
if (components.length < 3) {
alert(`Invalid color specification ${line}.`);
return "#000000"
}
let [r, g, b, ...rest] = components;
let color = {
r: parseInt(r),
g: parseInt(g),
b: parseInt(b),
};
if (isNaN(color.r) || isNaN(color.g) || isNaN(color.b)) {
alert(`Invalid color specification ${line}.`);
return "#000000"
}
return '#' + Color.rgbToHex(color);
});
addPalette(colorPalette);
});
};
break;
case 'hex':
fileReader.onload = function() {
file.text().then((content) => {
let colorPalette = content.split(/\r?\n/)
.map((line) => line.trim())
.filter((line) => line != "")
// discard comment lines
.filter((line) => !line.startsWith('#'))
.map((line) => {
if (line.match(/[0-9A-Fa-f]{6}/)) {
return '#' + line;
}
alert(`Invalid hex color ${line}.`);
return '#000000';
});
addPalette(colorPalette);
});
};
break;
default:
alert('Only PNG, GIF, .hex and .gpl files are supported at this time.');
}
else alert('Only PNG and GIF files are supported at this time.');
fileReader.readAsDataURL(browsePaletteHolder.files[0]);
}
browsePaletteHolder.value = null;
@ -526,4 +595,4 @@ const FileManager = (() => {
}
})
return ret;
})();
})();

4
views/holders.hbs
View File

@ -2,7 +2,7 @@
<a id="save-image-link-holder" href="#">dl</a>
<a id="save-project-link-holder" href="#">dl</a>
<input id="open-image-browse-holder" type="file" accept="image/png, image/gif, .lpe" />
<input id="load-palette-browse-holder" type="file" accept="image/png, image/gif" />
<input id="load-palette-browse-holder" type="file" accept="image/png, image/gif, .gpl, .hex" />
<input id="import-image-browse-holder" type="file" accept="image/png" />
<canvas id="load-palette-canvas-holder"></canvas>
</div>
</div>