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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
/* import-globals-from /browser/base/content/utilityOverlay.js */
var gSetBackground = {
_position: AppConstants.platform == "macosx" ? "STRETCH" : "",
_backgroundColor: AppConstants.platform != "macosx" ? 0 : undefined,
_screenWidth: 0,
_screenHeight: 0,
_image: null,
_canvas: null,
_imageName: null,
get _shell() {
return Cc["@mozilla.org/browser/shell-service;1"].getService(
Ci.nsIShellService
);
},
load() {
this._canvas = document.getElementById("screen");
this._screenWidth = screen.width;
this._screenHeight = screen.height;
// Cap ratio to 4 so the dialog width doesn't get ridiculous. Highest
// regular screens seem to be 32:9 (3.56) according to Wikipedia.
let screenRatio = Math.min(this._screenWidth / this._screenHeight, 4);
this._canvas.width = this._canvas.height * screenRatio;
document.getElementById("preview-unavailable").style.width =
this._canvas.width + "px";
if (AppConstants.platform == "macosx") {
document
.getElementById("SetDesktopBackgroundDialog")
.getButton("accept").hidden = true;
} else {
let multiMonitors = false;
if (AppConstants.platform == "linux") {
// getMonitors only ever returns the primary monitor on Linux, so just
// always show the option
multiMonitors = true;
} else {
const gfxInfo = Cc["@mozilla.org/gfx/info;1"].getService(Ci.nsIGfxInfo);
const monitors = gfxInfo.getMonitors();
multiMonitors = monitors.length > 1;
}
if (!multiMonitors) {
// Hide span option on single monitor systems.
document.getElementById("spanPosition").hidden = true;
}
}
document.addEventListener("dialogaccept", function () {
gSetBackground.setDesktopBackground();
});
// make sure that the correct dimensions will be used
setTimeout(
function (self) {
self.init(window.arguments[0], window.arguments[1]);
},
0,
this
);
},
init(aImage, aImageName) {
this._image = aImage;
this._imageName = aImageName;
// set the size of the coordinate space
this._canvas.width = this._canvas.clientWidth;
this._canvas.height = this._canvas.clientHeight;
var ctx = this._canvas.getContext("2d");
ctx.scale(
this._canvas.clientWidth / this._screenWidth,
this._canvas.clientHeight / this._screenHeight
);
if (AppConstants.platform != "macosx") {
this._initColor();
} else {
// Make sure to reset the button state in case the user has already
// set an image as their desktop background.
var setDesktopBackground = document.getElementById(
"setDesktopBackground"
);
setDesktopBackground.hidden = false;
var bundle = document.getElementById("backgroundBundle");
setDesktopBackground.label = bundle.getString("DesktopBackgroundSet");
setDesktopBackground.disabled = false;
document.getElementById("showDesktopPreferences").hidden = true;
}
this.updatePosition();
},
setDesktopBackground() {
if (AppConstants.platform != "macosx") {
Services.xulStore.persist(
document.getElementById("menuPosition"),
"value"
);
this._shell.desktopBackgroundColor = this._hexStringToLong(
this._backgroundColor
);
} else {
Services.obs.addObserver(this, "shell:desktop-background-changed");
var bundle = document.getElementById("backgroundBundle");
var setDesktopBackground = document.getElementById(
"setDesktopBackground"
);
setDesktopBackground.disabled = true;
setDesktopBackground.label = bundle.getString(
"DesktopBackgroundDownloading"
);
}
this._shell.setDesktopBackground(
this._image,
Ci.nsIShellService["BACKGROUND_" + this._position],
this._imageName
);
},
updatePosition() {
var ctx = this._canvas.getContext("2d");
ctx.clearRect(0, 0, this._screenWidth, this._screenHeight);
document.getElementById("preview-unavailable").hidden = true;
if (AppConstants.platform != "macosx") {
this._position = document.getElementById("menuPosition").value;
}
switch (this._position) {
case "TILE":
ctx.save();
ctx.fillStyle = ctx.createPattern(this._image, "repeat");
ctx.fillRect(0, 0, this._screenWidth, this._screenHeight);
ctx.restore();
break;
case "STRETCH":
ctx.drawImage(this._image, 0, 0, this._screenWidth, this._screenHeight);
break;
case "CENTER": {
let x = (this._screenWidth - this._image.naturalWidth) / 2;
let y = (this._screenHeight - this._image.naturalHeight) / 2;
ctx.drawImage(this._image, x, y);
break;
}
case "FILL": {
// Try maxing width first, overflow height.
let widthRatio = this._screenWidth / this._image.naturalWidth;
let width = this._image.naturalWidth * widthRatio;
let height = this._image.naturalHeight * widthRatio;
if (height < this._screenHeight) {
// Height less than screen, max height and overflow width.
let heightRatio = this._screenHeight / this._image.naturalHeight;
width = this._image.naturalWidth * heightRatio;
height = this._image.naturalHeight * heightRatio;
}
let x = (this._screenWidth - width) / 2;
let y = (this._screenHeight - height) / 2;
ctx.drawImage(this._image, x, y, width, height);
break;
}
case "FIT": {
// Try maxing width first, top and bottom borders.
let widthRatio = this._screenWidth / this._image.naturalWidth;
let width = this._image.naturalWidth * widthRatio;
let height = this._image.naturalHeight * widthRatio;
let x = 0;
let y = (this._screenHeight - height) / 2;
if (height > this._screenHeight) {
// Height overflow, maximise height, side borders.
let heightRatio = this._screenHeight / this._image.naturalHeight;
width = this._image.naturalWidth * heightRatio;
height = this._image.naturalHeight * heightRatio;
x = (this._screenWidth - width) / 2;
y = 0;
}
ctx.drawImage(this._image, x, y, width, height);
break;
}
case "SPAN": {
document.getElementById("preview-unavailable").hidden = false;
ctx.fillStyle = "#222";
ctx.fillRect(0, 0, this._screenWidth, this._screenHeight);
ctx.stroke();
}
}
},
};
if (AppConstants.platform != "macosx") {
gSetBackground._initColor = function () {
var color = this._shell.desktopBackgroundColor;
const rMask = 4294901760;
const gMask = 65280;
const bMask = 255;
var r = (color & rMask) >> 16;
var g = (color & gMask) >> 8;
var b = color & bMask;
this.updateColor(this._rgbToHex(r, g, b));
var colorpicker = document.getElementById("desktopColor");
colorpicker.value = this._backgroundColor;
};
gSetBackground.updateColor = function (aColor) {
this._backgroundColor = aColor;
this._canvas.style.backgroundColor = aColor;
};
// Converts a color string in the format "#RRGGBB" to an integer.
gSetBackground._hexStringToLong = function (aString) {
return (
(parseInt(aString.substring(1, 3), 16) << 16) |
(parseInt(aString.substring(3, 5), 16) << 8) |
parseInt(aString.substring(5, 7), 16)
);
};
gSetBackground._rgbToHex = function (aR, aG, aB) {
return (
"#" +
[aR, aG, aB]
.map(aInt => aInt.toString(16).replace(/^(.)$/, "0$1"))
.join("")
.toUpperCase()
);
};
} else {
gSetBackground.observe = function (aSubject, aTopic) {
if (aTopic == "shell:desktop-background-changed") {
document.getElementById("setDesktopBackground").hidden = true;
document.getElementById("showDesktopPreferences").hidden = false;
Services.obs.removeObserver(this, "shell:desktop-background-changed");
}
};
gSetBackground.showDesktopPrefs = function () {
this._shell.QueryInterface(Ci.nsIMacShellService).showDesktopPreferences();
};
}