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Merge pull request #107 from Lattay/support_hex_palette

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Implement importing GIMP and .hex palettes.
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Nicola 2022-12-27 21:57:47 +01:00 committed by GitHub
commit d9bde9bee6
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5 changed files with 143 additions and 50 deletions
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10
js/ColorModule.js
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@ -388,10 +388,12 @@ const ColorModule = (() => {
*
* @param {*} paletteColors The colours of the palette
*/
function createColorPalette(paletteColors) {
function createColorPalette(paletteColors, clearCurrent=true) {
//remove current palette
while (colorsMenu.childElementCount > 1)
colorsMenu.children[0].remove();
if (clearCurrent) {
while (colorsMenu.childElementCount > 1)
colorsMenu.children[0].remove();
}
var lightestColor = new Color("hex", '#000000');
var darkestColor = new Color("hex", '#ffffff');
@ -527,4 +529,4 @@ const ColorModule = (() => {
updateCurrentColor,
getSelectedColor,
}
})();
})();

171
js/FileManager.js
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@ -292,57 +292,143 @@ const FileManager = (() => {
return JSON.stringify(dictionary);
}
let fromMenu = false;
function openImportPaletteWindow() {
fromMenu = true;
document.getElementById('load-palette-browse-holder').click();
}
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];
//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]};
var color = '#' + Color.rgbToHex(newColor);
if (colorPalette.indexOf(color) == -1) {
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');
};
img.src = e.target.result;
};
var fileReader = new FileReader();
// dispatch on file type
switch (fileContentType) {
case 'image/png':
case 'image/gif':
fileReader.onload = loadPaletteFromImage;
fileReader.readAsDataURL(browsePaletteHolder.files[0]);
break;
case 'gpl':
fileReader.onload = loadPaletteFromGimp;
fileReader.readAsText(browsePaletteHolder.files[0]);
break;
case 'hex':
fileReader.onload = loadPaletteFromHex;
fileReader.readAsText(browsePaletteHolder.files[0]);
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.');
}
browsePaletteHolder.value = null;
}
function addPalette(colors) {
if (fromMenu) {
ColorModule.createColorPalette(colors, clearCurrent=false);
} else {
// From splash screen
// 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');
}
}
function loadPaletteFromImage(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]};
var color = '#' + Color.rgbToHex(newColor);
if (colorPalette.indexOf(color) == -1) {
colorPalette.push(color);
}
}
addPalette(colorPalette);
};
img.src = e.target.result;
}
function loadPaletteFromGimp(e) {
let content = e.target.result;
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);
}
function loadPaletteFromHex(e) {
let content = e.target.result;
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);
}
currentImportPivotElement = undefined;
currentImportPivotPosition = 'middle';
isImportWindowInitialized = false;
@ -513,6 +599,7 @@ const FileManager = (() => {
openPixelExportWindow,
openSaveProjectWindow,
openImportImageWindow,
openImportPaletteWindow,
open
}
@ -526,4 +613,4 @@ const FileManager = (() => {
}
})
return ret;
})();
})();

5
js/TopMenuModule.js
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@ -46,6 +46,9 @@ const TopMenuModule = (() => {
case 'Import':
Events.on('click', currSubmenuButton, FileManager.openImportImageWindow);
break;
case 'Load palette':
Events.on('click', currSubmenuButton, FileManager.openImportPaletteWindow);
break;
case 'Export':
Events.on('click', currSubmenuButton, FileManager.openPixelExportWindow);
break;
@ -139,4 +142,4 @@ const TopMenuModule = (() => {
addInfoElement,
resetInfos
}
})();
})();

4
views/holders.hbs
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@ -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>

3
views/main-menu.hbs
View File

@ -7,6 +7,7 @@
<li><button>Save project</button></li>
<li><button>Open</button></li>
<li><button>Import</button></li>
<li><button>Load palette</button></li>
<li><button id="export-button" class="disabled">Export</button></li>
<li><a href="https://lospec.com/pixel-editor">Exit</a></li>
</ul>
@ -74,4 +75,4 @@
<li>{{> checkbox}}</li>
</ul>
</li>
</ul>
</ul>