1 files changed, 208 insertions, 0 deletions
diff --git a/application/basilisk/components/shell/content/setDesktopBackground.js b/application/basilisk/components/shell/content/setDesktopBackground.js
new file mode 100644
index 000000000..f0fac8933
--- /dev/null
+++ b/application/basilisk/components/shell/content/setDesktopBackground.js
@@ -0,0 +1,208 @@
+/* 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,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+var Ci = Components.interfaces;
+
+var gSetBackground = {
+#ifdef XP_MACOSX
+  _position        : "STRETCH",
+  _backgroundColor : undefined,
+#else
+  _position        : "",
+  _backgroundColor : 0,
+#endif
+  _screenWidth     : 0,
+  _screenHeight    : 0,
+  _image           : null,
+  _canvas          : null,
+
+  get _shell() {
+    return Components.classes["@mozilla.org/browser/shell-service;1"]
+                     .getService(Ci.nsIShellService);
+  },
+
+  load() {
+    this._canvas = document.getElementById("screen");
+    this._screenWidth = screen.width;
+    this._screenHeight = screen.height;
+#ifdef XP_MACOSX
+    document.documentElement.getButton("accept").hidden = true;
+#endif
+    if (this._screenWidth / this._screenHeight >= 1.6)
+      document.getElementById("monitor").setAttribute("aspectratio", "16:10");
+
+#ifdef XP_WIN
+    // Hide fill + fit options if < Win7 since they don't work.
+    var version = Components.classes["@mozilla.org/system-info;1"]
+                  .getService(Ci.nsIPropertyBag2)
+                  .getProperty("version");
+    var isWindows7OrHigher = (parseFloat(version) >= 6.1);
+    if (!isWindows7OrHigher) {
+      document.getElementById("fillPosition").hidden = true;
+      document.getElementById("fitPosition").hidden = true;
+    }
+#endif
+
+    // make sure that the correct dimensions will be used
+    setTimeout(function(self) {
+      self.init(window.arguments[0]);
+    }, 0, this);
+  },
+
+  init(aImage) {
+    this._image = aImage;
+
+    // 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);
+
+#ifdef XP_MACOSX
+    // 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;
+#else
+    this._initColor();
+#endif
+    this.updatePosition();
+  },
+
+  setDesktopBackground() {
+#ifdef XP_MACOSX
+      Components.classes["@mozilla.org/observer-service;1"]
+                .getService(Ci.nsIObserverService)
+                .addObserver(this, "shell:desktop-background-changed", false);
+
+      var bundle = document.getElementById("backgroundBundle");
+      var setDesktopBackground = document.getElementById("setDesktopBackground");
+      setDesktopBackground.disabled = true;
+      setDesktopBackground.label = bundle.getString("DesktopBackgroundDownloading");
+#else
+      document.persist("menuPosition", "value");
+      this._shell.desktopBackgroundColor = this._hexStringToLong(this._backgroundColor);
+#endif
+    this._shell.setDesktopBackground(this._image,
+                                     Ci.nsIShellService["BACKGROUND_" + this._position]);
+  },
+
+  updatePosition() {
+    var ctx = this._canvas.getContext("2d");
+    ctx.clearRect(0, 0, this._screenWidth, this._screenHeight);
+
+#ifndef XP_MACOSX
+    this._position = document.getElementById("menuPosition").value;
+#endif
+
+    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;
+      }
+    }
+  }
+};
+
+#ifdef XP_MACOSX
+  gSetBackground["observe"] = function(aSubject, aTopic, aData) {
+    if (aTopic == "shell:desktop-background-changed") {
+      document.getElementById("setDesktopBackground").hidden = true;
+      document.getElementById("showDesktopPreferences").hidden = false;
+
+      Components.classes["@mozilla.org/observer-service;1"]
+                .getService(Ci.nsIObserverService)
+                .removeObserver(this, "shell:desktop-background-changed");
+    }
+  };
+#else
+  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.color = 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();
+  };
+#endif
+
+  gSetBackground["showDesktopPrefs"] = function() {
+    this._shell.openApplication(Ci.nsIMacShellService.APPLICATION_DESKTOP);
+  };
+}