confetti (#1243)

* 🎉 (confetti) message support.  Thanks @LorenDB !

3 files changed, 78 insertions, 1 deletions

diff --git a/resources/qml/MessageView.qml b/resources/qml/MessageView.qml

index 8e6ad8d2..e3e02ee9 100644
--- a/resources/qml/MessageView.qml
+++ b/resources/qml/MessageView.qml
@@ -59,7 +59,6 @@ Item {
         onCountChanged: {
             // Mark timeline as read
             if (atYEnd && room) model.currentIndex = 0;
-
         }
 
         ScrollBar.vertical: scrollbar
diff --git a/resources/qml/TimelineView.qml b/resources/qml/TimelineView.qml

index ab1bbc28..dff23700 100644
--- a/resources/qml/TimelineView.qml
+++ b/resources/qml/TimelineView.qml
@@ -13,6 +13,7 @@ import Qt.labs.platform 1.1 as Platform
 import QtQuick 2.15
 import QtQuick.Controls 2.5
 import QtQuick.Layouts 1.3
+import QtQuick.Particles 2.15
 import QtQuick.Window 2.13
 import im.nheko 1.0
 import im.nheko.EmojiModel 1.0
@@ -25,6 +26,8 @@ Item {
     property bool showBackButton: false
     clip: true
 
+    onRoomChanged: if (room != null) room.triggerSpecialEffects()
+
     Shortcut {
         sequence: StandardKey.Close
         onActivated: Rooms.resetCurrentRoom()
@@ -298,6 +301,58 @@ Item {
         onClicked: Rooms.resetCurrentRoom()
     }
 
+    ParticleSystem { id: confettiParticleSystem }
+
+    Emitter {
+        id: confettiEmitter
+
+        width: parent.width * 3/4
+        enabled: false
+        anchors.horizontalCenter: parent.horizontalCenter
+        y: parent.height
+        emitRate: Math.min(400 * Math.sqrt(parent.width * parent.height) / 870, 1000)
+        lifeSpan: 15000
+        system: confettiParticleSystem
+        velocityFromMovement: 8
+        size: 16
+        sizeVariation: 4
+        velocity: PointDirection {
+            x: 0
+            y: -Math.min(450 * parent.height / 700, 1000)
+            xVariation: Math.min(4 * parent.width / 7, 450)
+            yVariation: 250
+        }
+
+        ImageParticle {
+            system: confettiParticleSystem
+            source: "qrc:/confettiparticle.svg"
+            rotationVelocity: 0
+            rotationVelocityVariation: 360
+            colorVariation: 1
+            color: "white"
+            entryEffect: ImageParticle.None
+            xVector: PointDirection {
+                x: 1
+                y: 0
+                xVariation: 0.2
+                yVariation: 0.2
+            }
+            yVector: PointDirection {
+                x: 0
+                y: 0.5
+                xVariation: 0.2
+                yVariation: 0.2
+            }
+        }
+    }
+
+    Gravity {
+        system: confettiParticleSystem
+        anchors.fill: parent
+        magnitude: 350
+        angle: 90
+    }
+
     NhekoDropArea {
         anchors.fill: parent
         roomid: room ? room.roomId : ""
@@ -321,6 +376,15 @@ Item {
             timelineRoot.destroyOnClose(dialog);
         }
 
+        function onConfetti()
+        {
+            if (!Settings.fancyEffects)
+                return
+
+            confettiEmitter.pulse(parent.height * 2)
+            room.markSpecialEffectsDone()
+        }
+
         target: room
     }
 
diff --git a/resources/qml/delegates/MessageDelegate.qml b/resources/qml/delegates/MessageDelegate.qml

index a2a44cb2..3725be05 100644
--- a/resources/qml/delegates/MessageDelegate.qml
+++ b/resources/qml/delegates/MessageDelegate.qml
@@ -76,6 +76,20 @@ Item {
         }
 
         DelegateChoice {
+            roleValue: MtxEvent.ConfettiMessage
+
+            TextMessage {
+                formatted: d.formattedBody
+                body: d.body
+                isOnlyEmoji: d.isOnlyEmoji
+                isReply: d.isReply
+                keepFullText: d.keepFullText
+                metadataWidth: d.metadataWidth
+            }
+
+        }
+
+        DelegateChoice {
             roleValue: MtxEvent.NoticeMessage
 
             NoticeMessage {