gnome-shell-extensions/desktop-icons-touch-support.patch

From bcbf9709802e7644c5911615dabdee7d8ca07719 Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Mon, 31 May 2021 19:29:34 +0200
Subject: [PATCH 1/3] desktopManager: Handle TOUCH_UPDATE/END events explicitly
 for rubberband

These events need specific handling for Wayland, as we do not get emulated
pointer events in that platform. Handle these for rubberband selection.
---
 extensions/desktop-icons/desktopManager.js | 67 ++++++++++++++++------
 1 file changed, 48 insertions(+), 19 deletions(-)

diff --git a/extensions/desktop-icons/desktopManager.js b/extensions/desktop-icons/desktopManager.js
index 399aee0..a70cd98 100644
--- a/extensions/desktop-icons/desktopManager.js
+++ b/extensions/desktop-icons/desktopManager.js
@@ -130,26 +130,49 @@ var DesktopManager = GObject.registerClass({
             }
             [x, y] = event.get_coords();
             this._updateRubberBand(x, y);
-            let x0, y0, x1, y1;
-            if (x >= this._rubberBandInitialX) {
-                x0 = this._rubberBandInitialX;
-                x1 = x;
-            } else {
-                x1 = this._rubberBandInitialX;
-                x0 = x;
-            }
-            if (y >= this._rubberBandInitialY) {
-                y0 = this._rubberBandInitialY;
-                y1 = y;
-            } else {
-                y1 = this._rubberBandInitialY;
-                y0 = y;
-            }
-            for (let [fileUri, fileItem] of this._fileItems) {
-                fileItem.emit('selected', true, true,
-                              fileItem.intersectsWith(x0, y0, x1 - x0, y1 - y0));
-            }
+            this._updateSelection(x, y);
         });
+        this._rubberBandTouchId = global.stage.connect('touch-event', (actor, event) => {
+            // Let x11 pointer emulation do the job on X11
+            if (!Meta.is_wayland_compositor())
+                return Clutter.EVENT_PROPAGATE;
+            if (!global.display.is_pointer_emulating_sequence(event.get_event_sequence()))
+                return Clutter.EVENT_PROPAGATE;
+
+            if (event.type() == Clutter.EventType.TOUCH_END) {
+                this.endRubberBand();
+                return Clutter.EVENT_STOP;
+            } else if (event.type() == Clutter.EventType.TOUCH_UPDATE) {
+                [x, y] = event.get_coords();
+                this._updateRubberBand(x, y);
+                this._updateSelection(x, y);
+                return Clutter.EVENT_STOP;
+            }
+
+            return Clutter.EVENT_PROPAGATE;
+	});
+    }
+
+    _updateSelection(x, y) {
+        let x0, y0, x1, y1;
+        if (x >= this._rubberBandInitialX) {
+            x0 = this._rubberBandInitialX;
+            x1 = x;
+        } else {
+            x1 = this._rubberBandInitialX;
+            x0 = x;
+        }
+        if (y >= this._rubberBandInitialY) {
+            y0 = this._rubberBandInitialY;
+            y1 = y;
+        } else {
+            y1 = this._rubberBandInitialY;
+            y0 = y;
+        }
+        for (let [fileUri, fileItem] of this._fileItems) {
+            fileItem.emit('selected', true, true,
+                          fileItem.intersectsWith(x0, y0, x1 - x0, y1 - y0));
+        }
     }
 
     endRubberBand() {
@@ -157,8 +180,10 @@ var DesktopManager = GObject.registerClass({
         Extension.lockActivitiesButton = false;
         this._grabHelper.ungrab();
         global.stage.disconnect(this._rubberBandId);
+        global.stage.disconnect(this._rubberBandTouchId);
         global.stage.disconnect(this._stageReleaseEventId);
         this._rubberBandId = 0;
+        this._rubberBandTouchId = 0;
         this._stageReleaseEventId = 0;
 
         this._selection = new Set([...this._selection, ...this._currentSelection]);
@@ -739,6 +764,10 @@ var DesktopManager = GObject.registerClass({
             global.stage.disconnect(this._rubberBandId);
         this._rubberBandId = 0;
 
+        if (this._rubberBandTouchId)
+            global.stage.disconnect(this._rubberBandTouchId);
+        this._rubberBandTouchId = 0;
+
         this._rubberBand.destroy();
 
         if (this._queryFileInfoCancellable)
-- 
2.31.1


From 0733004ffeb517f7a80ff41e7181027e8b92b17e Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Mon, 31 May 2021 19:31:03 +0200
Subject: [PATCH 2/3] desktopGrid: Handle TOUCH_BEGIN events explicitly

We do not get pointer emulated events on Wayland, so touch events should
be handled explicitly there. Handle starting rubberband selection via
touch.
---
 extensions/desktop-icons/desktopGrid.js | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/extensions/desktop-icons/desktopGrid.js b/extensions/desktop-icons/desktopGrid.js
index 94d2dfd..602fa7f 100644
--- a/extensions/desktop-icons/desktopGrid.js
+++ b/extensions/desktop-icons/desktopGrid.js
@@ -21,6 +21,7 @@ const Clutter = imports.gi.Clutter;
 const St = imports.gi.St;
 const Gio = imports.gi.Gio;
 const GLib = imports.gi.GLib;
+const Meta = imports.gi.Meta;
 const Shell = imports.gi.Shell;
 
 const Signals = imports.signals;
@@ -123,6 +124,7 @@ var DesktopGrid = class {
             () => this._backgroundDestroyed());
 
         this._grid.connect('button-press-event', (actor, event) => this._onPressButton(actor, event));
+        this._grid.connect('touch-event', (actor, event) => this._onTouchEvent(actor, event));
 
         this._grid.connect('key-press-event', this._onKeyPress.bind(this));
 
@@ -506,6 +508,23 @@ var DesktopGrid = class {
         return Clutter.EVENT_PROPAGATE;
     }
 
+    _onTouchEvent(actor, event) {
+        // Let x11 pointer emulation do the job on X11
+        if (!Meta.is_wayland_compositor())
+            return Clutter.EVENT_PROPAGATE;
+
+	if (event.type() == Clutter.EventType.TOUCH_BEGIN &&
+	    global.display.is_pointer_emulating_sequence(event.get_event_sequence())) {
+            Extension.desktopManager.clearSelection();
+            let [x, y] = event.get_coords();
+            let [gridX, gridY] = this._grid.get_transformed_position();
+            Extension.desktopManager.startRubberBand(x, y, gridX, gridY);
+            return Clutter.EVENT_STOP;
+        }
+
+        return Clutter.EVENT_PROPAGATE;
+    }
+
     _addDesktopBackgroundMenu() {
         this.actor._desktopBackgroundMenu = this._createDesktopBackgroundMenu();
         this.actor._desktopBackgroundManager = new PopupMenu.PopupMenuManager({ actor: this.actor });
-- 
2.31.1


From 2d978ffc58562c4f4d00b1afb03da58be3102e29 Mon Sep 17 00:00:00 2001
From: Carlos Garnacho <carlosg@gnome.org>
Date: Mon, 31 May 2021 19:31:50 +0200
Subject: [PATCH 3/3] fileItem: Handle (multi) touch explicitly via touch
 events

Wayland does not get pointer emulated events, so we must handle TOUCH_BEGIN/
END here for file clicking/tapping to work there.
---
 extensions/desktop-icons/fileItem.js | 34 ++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/extensions/desktop-icons/fileItem.js b/extensions/desktop-icons/fileItem.js
index 143cb9b..1cb47e8 100644
--- a/extensions/desktop-icons/fileItem.js
+++ b/extensions/desktop-icons/fileItem.js
@@ -117,6 +117,7 @@ var FileItem = class {
         this._container.connect('motion-event', (actor, event) => this._onMotion(actor, event));
         this._container.connect('leave-event', (actor, event) => this._onLeave(actor, event));
         this._container.connect('button-release-event', (actor, event) => this._onReleaseButton(actor, event));
+        this._container.connect('touch-event', (actor, event) => this._onTouchEvent(actor, event));
 
         /* Set the metadata and update relevant UI */
         this._updateMetadataFromFileInfo(fileInfo);
@@ -648,16 +649,26 @@ var FileItem = class {
         DesktopIconsUtil.launchTerminal(this.file.get_path());
     }
 
+    _eventButton(event) {
+	// Emulate button1 press on touch events
+	if (event.type() == Clutter.EventType.TOUCH_BEGIN ||
+	    event.type() == Clutter.EventType.TOUCH_END ||
+	    event.type() == Clutter.EventType.TOUCH_UPDATE)
+	    return 1;
+
+	return event.get_button();
+    }
+
     _updateClickState(event) {
         let settings = Clutter.Settings.get_default();
-        if ((event.get_button() == this._lastClickButton) &&
+        if ((this._eventButton(event) == this._lastClickButton) &&
             ((event.get_time() - this._lastClickTime) < settings.double_click_time))
             this._clickCount++;
         else
             this._clickCount = 1;
 
         this._lastClickTime = event.get_time();
-        this._lastClickButton = event.get_button();
+        this._lastClickButton = this._eventButton(event);
     }
 
     _getClickCount() {
@@ -666,7 +677,7 @@ var FileItem = class {
 
     _onPressButton(actor, event) {
         this._updateClickState(event);
-        let button = event.get_button();
+        let button = this._eventButton(event);
         if (button == 3) {
             if (!this.isSelected)
                 this.emit('selected', false, false, true);
@@ -725,7 +736,7 @@ var FileItem = class {
     }
 
     _onReleaseButton(actor, event) {
-        let button = event.get_button();
+        let button = this._eventButton(event);
         if (button == 1) {
             // primaryButtonPressed is TRUE only if the user has pressed the button
             // over an icon, and if (s)he has not started a drag&drop operation
@@ -744,6 +755,21 @@ var FileItem = class {
         return Clutter.EVENT_PROPAGATE;
     }
 
+    _onTouchEvent(actor, event) {
+        // Let x11 pointer emulation do the job on X11
+        if (!Meta.is_wayland_compositor())
+            return Clutter.EVENT_PROPAGATE;
+        if (!global.display.is_pointer_emulating_sequence(event.get_event_sequence()))
+            return Clutter.EVENT_PROPAGATE;
+
+        if (event.type() == Clutter.EventType.TOUCH_BEGIN)
+            this._onPressButton(actor, event);
+        else if (event.type() == Clutter.EventType.TOUCH_UPDATE)
+            this._onMotion(actor, event);
+        else if (event.type() == Clutter.EventType.TOUCH_END)
+            this._onReleaseButton(actor, event);
+    }
+
     get savedCoordinates() {
         return this._savedCoordinates;
     }
-- 
2.31.1