tdf#124146 touch gesture support, send pan gesture in dialogs

Pan gesture should work for comboboxes, for which panning is
implemented in core.

Change-Id: I0a7e49e9335159a302716f666e2334a9d532c115
Reviewed-on: https://gerrit.libreoffice.org/69720
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

kit/ChildSession.cpp

@@ -263,6 +263,7 @@ bool ChildSession::_handleInput(const char *buffer, int length)
                tokens[0] == "windowkey" ||
                tokens[0] == "mouse" ||
                tokens[0] == "windowmouse" ||
+               tokens[0] == "windowgesture" ||
                tokens[0] == "uno" ||
                tokens[0] == "selecttext" ||
                tokens[0] == "selectgraphic" ||
@@ -329,6 +330,10 @@ bool ChildSession::_handleInput(const char *buffer, int length)
         {
             return mouseEvent(buffer, length, tokens, LokEventTargetEnum::Window);
         }
+        else if (tokens[0] == "windowgesture")
+        {
+            return gestureEvent(buffer, length, tokens);
+        }
         else if (tokens[0] == "uno")
         {
             return unoCommand(buffer, length, tokens);
@@ -1097,6 +1102,45 @@ bool ChildSession::keyEvent(const char* /*buffer*/, int /*length*/,
     return true;
 }
 
+bool ChildSession::gestureEvent(const char* /*buffer*/, int /*length*/,
+                              const std::vector<std::string>& tokens)
+{
+    bool success = true;
+
+    unsigned int windowID = 0;
+    int x;
+    int y;
+    int offset;
+    std::string type;
+
+    if (tokens.size() < 6)
+        success = false;
+
+    if (!success ||
+        !getTokenUInt32(tokens[1], "id", windowID) ||
+        !getTokenString(tokens[2], "type", type) ||
+        !getTokenInteger(tokens[3], "x", x) ||
+        !getTokenInteger(tokens[4], "y", y) ||
+        !getTokenInteger(tokens[5], "offset", offset))
+    {
+        success = false;
+    }
+
+    if (!success)
+    {
+        sendTextFrame("error: cmd=" +  std::string(tokens[0]) + " kind=syntax");
+        return false;
+    }
+
+    std::unique_lock<std::mutex> lock(_docManager.getDocumentMutex());
+
+    getLOKitDocument()->setView(_viewId);
+
+    getLOKitDocument()->postWindowGestureEvent(windowID, type.c_str(), x, y, offset);
+
+    return true;
+}
+
 bool ChildSession::mouseEvent(const char* /*buffer*/, int /*length*/,
                               const std::vector<std::string>& tokens,
                               const LokEventTargetEnum target)

kit/ChildSession.hpp

@@ -255,6 +255,7 @@ private:
     bool extTextInputEvent(const char* /*buffer*/, int /*length*/, const std::vector<std::string>& tokens);
     bool dialogKeyEvent(const char* buffer, int length, const std::vector<std::string>& tokens);
     bool mouseEvent(const char* buffer, int length, const std::vector<std::string>& tokens, const LokEventTargetEnum target);
+    bool gestureEvent(const char* buffer, int length, const std::vector<std::string>& tokens);
     bool unoCommand(const char* buffer, int length, const std::vector<std::string>& tokens);
     bool selectText(const char* buffer, int length, const std::vector<std::string>& tokens);
     bool selectGraphic(const char* buffer, int length, const std::vector<std::string>& tokens);

loleaflet/src/control/Control.LokDialog.js

@@ -8,6 +8,9 @@ L.WinUtil = {
 
 };
 
+var firstTouchPositionX = null;
+var firstTouchPositionY = null;
+
 function updateTransformation(target) {
 	if (target !== null && target !== undefined) {
 		var value = [
@@ -524,6 +527,12 @@ L.Control.LokDialog = L.Control.extend({
 		                              ' buttons=' + buttons + ' modifier=' + modifier);
 	},
 
+	_postWindowGestureEvent: function(winid, type, x, y, offset) {
+		console.log('x ' + x + ' y ' + y + ' o ' + offset);
+		this._map._socket.sendMessage('windowgesture id=' + winid +  ' type=' + type +
+		                              ' x=' + x + ' y=' + y + ' offset=' + offset);
+	},
+
 	_postWindowKeyboardEvent: function(winid, type, charcode, keycode) {
 		this._map._socket.sendMessage('windowkey id=' + winid + ' type=' + type +
 		                              ' char=' + charcode + ' key=' + keycode);
@@ -663,6 +672,31 @@ L.Control.LokDialog = L.Control.extend({
 	_setupChildEvents: function(childId, canvas) {
 		L.DomEvent.on(canvas, 'contextmenu', L.DomEvent.preventDefault);
 
+		L.DomEvent.on(canvas, 'touchstart touchmove touchend', function(e) {
+			var rect = canvas.getBoundingClientRect();
+			var touchX = (e.type === 'touchend') ? e.changedTouches[0].clientX : e.targetTouches[0].clientX;
+			var touchY = (e.type === 'touchend') ? e.changedTouches[0].clientY : e.targetTouches[0].clientY;
+			touchX = touchX - rect.x;
+			touchY = touchY - rect.y;
+			if (e.type === 'touchstart')
+			{
+				firstTouchPositionX = touchX;
+				firstTouchPositionY = touchY;
+				this._postWindowGestureEvent(childId, 'panBegin', firstTouchPositionX, firstTouchPositionY, 0);
+			}
+			else if (e.type === 'touchend')
+			{
+				this._postWindowGestureEvent(childId, 'panEnd', touchX, touchY, touchY - firstTouchPositionY);
+				firstTouchPositionX = null;
+				firstTouchPositionY = null;
+
+			}
+			else if (e.type === 'touchmove')
+			{
+				this._postWindowGestureEvent(childId, 'panUpdate', touchX, touchY, touchY - firstTouchPositionY);
+			}
+		}, this);
+
 		L.DomEvent.on(canvas, 'mousedown mouseup', function(e) {
 			var buttons = 0;
 			buttons |= e.button === this._map['mouse'].JSButtons.left ? this._map['mouse'].LOButtons.left : 0;

wsd/ClientSession.cpp

@@ -152,6 +152,7 @@ bool ClientSession::_handleInput(const char *buffer, int length)
              tokens[0] != "windowkey" &&
              tokens[0] != "mouse" &&
              tokens[0] != "windowmouse" &&
+             tokens[0] != "windowgesture" &&
              tokens[0] != "partpagerectangles" &&
              tokens[0] != "ping" &&
              tokens[0] != "renderfont" &&