add avatar and sender user colors

src/domain/session/avatar.js

@@ -15,6 +15,42 @@ limitations under the License.
 */
 
 export function avatarInitials(name) {
-    const words = name.split(" ").slice(0, 2);
-    return words.reduce((i, w) => i + w.charAt(0).toUpperCase(), "");
+    let words = name.split(" ");
+    if (words.length === 1) {
+        words = words[0].split("-");
+    }
+    words = words.slice(0, 2);
+    return words.reduce((i, w) => {
+        let firstChar = w.charAt(0);
+        if (firstChar === "!" || firstChar === "@" || firstChar === "#") {
+            firstChar = w.charAt(1);
+        }
+        return i + firstChar.toUpperCase();
+    }, "");
+}
+
+/**
+ * calculates a numeric hash for a given string
+ *
+ * @param {string} str string to hash
+ *
+ * @return {number}
+ */
+function hashCode(str) {
+    let hash = 0;
+    let i;
+    let chr;
+    if (str.length === 0) {
+        return hash;
+    }
+    for (i = 0; i < str.length; i++) {
+        chr = str.charCodeAt(i);
+        hash = ((hash << 5) - hash) + chr;
+        hash |= 0;
+    }
+    return Math.abs(hash);
+}
+
+export function getIdentifierColorNumber(id) {
+    return (hashCode(id) % 8) + 1;
 }

src/domain/session/room/RoomViewModel.js

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import {TimelineViewModel} from "./timeline/TimelineViewModel.js";
-import {avatarInitials} from "../avatar.js";
+import {avatarInitials, getIdentifierColorNumber} from "../avatar.js";
 import {ViewModel} from "../../ViewModel.js";
 
 export class RoomViewModel extends ViewModel {
@@ -90,7 +90,9 @@ export class RoomViewModel extends ViewModel {
         return avatarInitials(this._room.name);
     }
 
-
+    get avatarColorNumber() {
+        return getIdentifierColorNumber(this._room.id)
+    }
     
     async _sendMessage(message) {
         if (message) {

src/domain/session/room/timeline/tiles/MessageTile.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 import {SimpleTile} from "./SimpleTile.js";
+import {getIdentifierColorNumber} from "../../../avatar.js";
 
 export class MessageTile extends SimpleTile {
     constructor(options) {
@@ -32,6 +33,10 @@ export class MessageTile extends SimpleTile {
         return this._entry.sender;
     }
 
+    get senderColorNumber() {
+        return getIdentifierColorNumber(this._entry.sender);
+    }
+
     get date() {
         return this._date.toLocaleDateString({}, {month: "numeric", day: "numeric"});
     }

src/domain/session/roomlist/RoomTileViewModel.js

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import {avatarInitials} from "../avatar.js";
+import {avatarInitials, getIdentifierColorNumber} from "../avatar.js";
 import {ViewModel} from "../../ViewModel.js";
 
 export class RoomTileViewModel extends ViewModel {
@@ -60,4 +60,8 @@ export class RoomTileViewModel extends ViewModel {
     get avatarInitials() {
         return avatarInitials(this._room.name);
     }
+
+    get avatarColorNumber() {
+        return getIdentifierColorNumber(this._room.id)
+    }
 }

src/ui/web/css/themes/element/theme.css

@@ -21,6 +21,15 @@ limitations under the License.
     font-family: 'Inter', sans-serif, 'emoji';
     background-color: white;
     color: #2e2f32;
+    
+    --usercolor1: #368BD6;
+    --usercolor2: #AC3BA8;
+    --usercolor3: #03B381;
+    --usercolor4: #E64F7A;
+    --usercolor5: #FF812D;
+    --usercolor6: #2DC2C5;
+    --usercolor7: #5C56F5;
+    --usercolor8: #74D12C;
 }
 
 .avatar {
@@ -30,6 +39,15 @@ limitations under the License.
     color: white;
 }
 
+.hydrogen .avatar.usercolor1 { background-color: var(--usercolor1); }
+.hydrogen .avatar.usercolor2 { background-color: var(--usercolor2); }
+.hydrogen .avatar.usercolor3 { background-color: var(--usercolor3); }
+.hydrogen .avatar.usercolor4 { background-color: var(--usercolor4); }
+.hydrogen .avatar.usercolor5 { background-color: var(--usercolor5); }
+.hydrogen .avatar.usercolor6 { background-color: var(--usercolor6); }
+.hydrogen .avatar.usercolor7 { background-color: var(--usercolor7); }
+.hydrogen .avatar.usercolor8 { background-color: var(--usercolor8); }
+
 .LeftPanel {
     background: rgba(245, 245, 245, 0.90);
 }
@@ -135,6 +153,15 @@ a {
     font-weight: bold;
 }
 
+.hydrogen .sender.usercolor1 { color: var(--usercolor1); }
+.hydrogen .sender.usercolor2 { color: var(--usercolor2); }
+.hydrogen .sender.usercolor3 { color: var(--usercolor3); }
+.hydrogen .sender.usercolor4 { color: var(--usercolor4); }
+.hydrogen .sender.usercolor5 { color: var(--usercolor5); }
+.hydrogen .sender.usercolor6 { color: var(--usercolor6); }
+.hydrogen .sender.usercolor7 { color: var(--usercolor7); }
+.hydrogen .sender.usercolor8 { color: var(--usercolor8); }
+
 .TextMessageView .message-container time {
     padding: 2px 0 0px 20px;
     font-size: 0.9em;

src/ui/web/session/RoomTile.js

@@ -17,9 +17,9 @@ limitations under the License.
 import {TemplateView} from "../general/TemplateView.js";
 
 export class RoomTile extends TemplateView {
-    render(t) {
+    render(t, vm) {
         return t.li({"className": {"active": vm => vm.isOpen}}, [
-            t.div({className: "avatar medium"}, vm => vm.avatarInitials),
+            t.div({className: `avatar medium usercolor${vm.avatarColorNumber}`}, vm => vm.avatarInitials),
             t.div({className: "description"}, t.div({className: "name"}, vm => vm.name))
         ]);
     }

src/ui/web/session/room/RoomView.js

@@ -30,7 +30,7 @@ export class RoomView extends TemplateView {
             t.div({className: "TimelinePanel"}, [
                 t.div({className: "RoomHeader"}, [
                     t.button({className: "back", onClick: () => vm.close()}),
-                    t.div({className: "avatar large"}, vm => vm.avatarInitials),
+                    t.div({className: `avatar large usercolor${vm.avatarColorNumber}`}, vm => vm.avatarInitials),
                     t.div({className: "room-description"}, [
                         t.h2(vm => vm.name),
                     ]),

src/ui/web/session/room/timeline/ImageView.js

@@ -15,6 +15,7 @@ limitations under the License.
 */
 
 import {TemplateView} from "../../../general/TemplateView.js";
+import {renderMessage} from "./common.js";
 
 export class ImageView extends TemplateView {
     render(t, vm) {
@@ -33,13 +34,8 @@ export class ImageView extends TemplateView {
             style: `padding-top: ${heightRatioPercent}%; width: ${vm.thumbnailWidth}px;`
         }, image);
 
-        return t.li(
-            {className: {"TextMessageView": true, own: vm.isOwn, pending: vm.isPending}},
-            t.div({className: "message-container"}, [
-                t.div({className: "sender"}, vm => vm.isContinuation ? "" : vm.sender),
-                t.div(linkContainer),
-                t.p(t.time(vm.date + " " + vm.time)),
-            ])
+        return renderMessage(t, vm,
+            [t.div(linkContainer), t.p(t.time(vm.date + " " + vm.time))]
         );
     }
 }

src/ui/web/session/room/timeline/TextMessageView.js

@@ -15,15 +15,12 @@ limitations under the License.
 */
 
 import {TemplateView} from "../../../general/TemplateView.js";
+import {renderMessage} from "./common.js";
 
 export class TextMessageView extends TemplateView {
     render(t, vm) {
-        return t.li(
-            {className: {"TextMessageView": true, own: vm.isOwn, pending: vm.isPending}},
-            t.div({className: "message-container"}, [
-                t.div({className: "sender"}, vm => vm.isContinuation ? "" : vm.sender),
-                t.p([vm.text, t.time(vm.date + " " + vm.time)]),
-            ])
+        return renderMessage(t, vm,
+            [t.p([vm.text, t.time(vm.date + " " + vm.time)])]
         );
     }
 }

src/ui/web/session/room/timeline/common.js

@@ -0,0 +1,14 @@
+export function renderMessage(t, vm, children) {
+    const classes = {
+        "TextMessageView": true,
+        own: vm.isOwn,
+        pending: vm.isPending,
+        continuation: vm.isContinuation,
+    };
+    const sender = t.div({className: `sender usercolor${vm.senderColorNumber}`}, vm => vm.isContinuation ? "" : vm.sender);
+    children = [sender].concat(children);
+    return t.li(
+        {className: classes},
+        t.div({className: "message-container"}, children)
+    );
+}