Forward mouse events from TextInput and TextEdit to QInputContext.

This brings TextInput in line with QLineEdit.  The fix for TextEdit
applies equally to QTextEdit.

Change-Id: I5c47e5c8e951ee53cb1fe45d9c302050cd19deef
Task-number: QTBUG-15705
Reviewed-by: axis

3 files changed, 64 insertions, 20 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativetextedit.cpp b/src/declarative/graphicsitems/qdeclarativetextedit.cpp
index 87a49bd..2946f6e 100644
--- a/src/declarative/graphicsitems/qdeclarativetextedit.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetextedit.cpp
@@ -975,6 +975,10 @@ void QDeclarativeTextEdit::setSelectByMouse(bool on)
     if (d->selectByMouse != on) {
         d->selectByMouse = on;
         setKeepMouseGrab(on);
+        if (on)
+            setTextInteractionFlags(d->control->textInteractionFlags() | Qt::TextSelectableByMouse);
+        else
+            setTextInteractionFlags(d->control->textInteractionFlags() & ~Qt::TextSelectableByMouse);
         emit selectByMouseChanged(on);
     }
 }
@@ -1027,11 +1031,10 @@ void QDeclarativeTextEdit::setReadOnly(bool r)
     setFlag(QGraphicsItem::ItemAcceptsInputMethod, !r);
 
     Qt::TextInteractionFlags flags = Qt::LinksAccessibleByMouse;
-    if (r) {
+    if (d->selectByMouse)
         flags = flags | Qt::TextSelectableByMouse;
-    } else {
-        flags = flags | Qt::TextEditorInteraction;
-    }
+    if (!r)
+        flags = flags | Qt::TextSelectableByKeyboard | Qt::TextEditable;
     d->control->setTextInteractionFlags(flags);
     if (!r)
         d->control->moveCursor(QTextCursor::End);
@@ -1249,8 +1252,8 @@ void QDeclarativeTextEdit::mousePressEvent(QGraphicsSceneMouseEvent *event)
             }
         }
     }
-    if (event->type() != QEvent::GraphicsSceneMouseDoubleClick || d->selectByMouse)
-        d->control->processEvent(event, QPointF(0, -d->yoff));
+
+    d->control->processEvent(event, QPointF(0, -d->yoff));
     if (!event->isAccepted())
         QDeclarativePaintedItem::mousePressEvent(event);
 }
@@ -1285,13 +1288,11 @@ Handles the given mouse \a event.
 void QDeclarativeTextEdit::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_D(QDeclarativeTextEdit);
-    if (d->selectByMouse) {
-        d->control->processEvent(event, QPointF(0, -d->yoff));
-        if (!event->isAccepted())
-            QDeclarativePaintedItem::mouseDoubleClickEvent(event);
-    } else {
+
+    d->control->processEvent(event, QPointF(0, -d->yoff));
+    if (!event->isAccepted())
         QDeclarativePaintedItem::mouseDoubleClickEvent(event);
-    }
+
 }
 
 /*!
@@ -1301,14 +1302,9 @@ Handles the given mouse \a event.
 void QDeclarativeTextEdit::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_D(QDeclarativeTextEdit);
-    if (d->selectByMouse) {
-        d->control->processEvent(event, QPointF(0, -d->yoff));
-        if (!event->isAccepted())
-            QDeclarativePaintedItem::mouseMoveEvent(event);
-        event->setAccepted(true);
-    } else {
+    d->control->processEvent(event, QPointF(0, -d->yoff));
+    if (!event->isAccepted())
         QDeclarativePaintedItem::mouseMoveEvent(event);
-    }
 }
 
 /*!
@@ -1407,7 +1403,7 @@ void QDeclarativeTextEditPrivate::init()
 
     control = new QTextControl(q);
     control->setIgnoreUnusedNavigationEvents(true);
-    control->setTextInteractionFlags(control->textInteractionFlags() | Qt::LinksAccessibleByMouse);
+    control->setTextInteractionFlags(Qt::LinksAccessibleByMouse | Qt::TextSelectableByKeyboard | Qt::TextEditable);
     control->setDragEnabled(false);
 
     // QTextControl follows the default text color
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput.cpp b/src/declarative/graphicsitems/qdeclarativetextinput.cpp
index e7c2ac7..bfcd715 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetextinput.cpp
@@ -51,6 +51,7 @@
 #include <QFontMetrics>
 #include <QPainter>
 #include <QTextBoundaryFinder>
+#include <QInputContext>
 #include <qstyle.h>
 
 #ifndef QT_NO_LINEEDIT
@@ -1002,6 +1003,8 @@ Handles the given mouse \a event.
 void QDeclarativeTextInput::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_D(QDeclarativeTextInput);
+    if (d->sendMouseEventToInputContext(event, QEvent::MouseButtonDblClick))
+        return;
     if (d->selectByMouse) {
         int cursor = d->xToPos(event->pos().x());
         d->control->selectWordAtPos(cursor);
@@ -1014,6 +1017,8 @@ void QDeclarativeTextInput::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *even
 void QDeclarativeTextInput::mousePressEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_D(QDeclarativeTextInput);
+    if (d->sendMouseEventToInputContext(event, QEvent::MouseButtonPress))
+        return;
     if(d->focusOnPress){
         bool hadActiveFocus = hasActiveFocus();
         forceActiveFocus();
@@ -1041,6 +1046,8 @@ void QDeclarativeTextInput::mousePressEvent(QGraphicsSceneMouseEvent *event)
 void QDeclarativeTextInput::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_D(QDeclarativeTextInput);
+    if (d->sendMouseEventToInputContext(event, QEvent::MouseMove))
+        event->setAccepted(true);
     if (d->selectByMouse) {
         if (qAbs(int(event->pos().x() - d->pressPos.x())) > QApplication::startDragDistance())
             setKeepMouseGrab(true);
@@ -1058,6 +1065,8 @@ Handles the given mouse \a event.
 void QDeclarativeTextInput::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 {
     Q_D(QDeclarativeTextInput);
+    if (d->sendMouseEventToInputContext(event, QEvent::MouseButtonRelease))
+        return;
     if (d->selectByMouse)
         setKeepMouseGrab(false);
     if (!d->showInputPanelOnFocus) { // input panel on click
@@ -1075,6 +1084,44 @@ void QDeclarativeTextInput::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
         QDeclarativePaintedItem::mouseReleaseEvent(event);
 }
 
+bool QDeclarativeTextInputPrivate::sendMouseEventToInputContext(
+        QGraphicsSceneMouseEvent *event, QEvent::Type eventType)
+{
+#if !defined QT_NO_IM
+    if (event->widget() && control->composeMode()) {
+        int tmp_cursor = xToPos(event->pos().x());
+        int mousePos = tmp_cursor - control->cursor();
+        if (mousePos < 0 || mousePos > control->preeditAreaText().length()) {
+            mousePos = -1;
+            // don't send move events outside the preedit area
+            if (eventType == QEvent::MouseMove)
+                return true;
+        }
+
+        QInputContext *qic = event->widget()->inputContext();
+        if (qic) {
+            QMouseEvent mouseEvent(
+                    eventType,
+                    event->widget()->mapFromGlobal(event->screenPos()),
+                    event->screenPos(),
+                    event->button(),
+                    event->buttons(),
+                    event->modifiers());
+            // may be causing reset() in some input methods
+            qic->mouseHandler(mousePos, &mouseEvent);
+            event->setAccepted(mouseEvent.isAccepted());
+        }
+        if (!control->preeditAreaText().isEmpty())
+            return true;
+    }
+#else
+    Q_UNUSED(event);
+    Q_UNUSED(eventType)
+#endif
+
+    return false;
+}
+
 bool QDeclarativeTextInput::sceneEvent(QEvent *event)
 {
     bool rv = QDeclarativeItem::sceneEvent(event);
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h b/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h
index f7446b4..ab2838b 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetextinput_p_p.h
@@ -104,6 +104,7 @@ public:
     void focusChanged(bool hasFocus);
     void updateHorizontalScroll();
     int calculateTextWidth();
+    bool sendMouseEventToInputContext(QGraphicsSceneMouseEvent *event, QEvent::Type eventType);
 
     QLineControl* control;