Fix clipping of TextInput contents.

The boundingRect represents the clip rectangle of an item rather than
the size and position of its unclipped content.  This would prevent any
content from being clipped except the boundingRect is only re-evaluated
when the size of the item changes so the content is instead clipped to
the size of the original content.

Task-number: QTBUG-23422
Change-Id: I96f830f833129b3230f65452db67b00028c40d6a
Reviewed-by: Martin Jones <martin.jones@nokia.com>

1 files changed, 52 insertions, 16 deletions

diff --git a/tests/auto/qtquick2/qquicktextinput/tst_qquicktextinput.cpp b/tests/auto/qtquick2/qquicktextinput/tst_qquicktextinput.cpp
index 08e638d6a9..2ee6fd8b8c 100644
--- a/tests/auto/qtquick2/qquicktextinput/tst_qquicktextinput.cpp
+++ b/tests/auto/qtquick2/qquicktextinput/tst_qquicktextinput.cpp
@@ -125,6 +125,8 @@ private slots:
     void horizontalAlignment_RightToLeft();
     void verticalAlignment();
 
+    void boundingRect();
+
     void positionAt();
 
     void maxLength();
@@ -1225,37 +1227,37 @@ void tst_qquicktextinput::horizontalAlignment_RightToLeft()
 
     QQuickTextInputPrivate *textInputPrivate = QQuickTextInputPrivate::get(textInput);
     QVERIFY(textInputPrivate != 0);
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() > canvas.width()/2);
 
     // implicit alignment should follow the reading direction of RTL text
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignRight);
     QCOMPARE(textInput->effectiveHAlign(), textInput->hAlign());
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll > canvas.width()/2);
 
     // explicitly left aligned
     textInput->setHAlign(QQuickTextInput::AlignLeft);
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignLeft);
     QCOMPARE(textInput->effectiveHAlign(), textInput->hAlign());
-    QVERIFY(textInput->boundingRect().left() < canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll < canvas.width()/2);
 
     // explicitly right aligned
     textInput->setHAlign(QQuickTextInput::AlignRight);
     QCOMPARE(textInput->effectiveHAlign(), textInput->hAlign());
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignRight);
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll > canvas.width()/2);
 
     // explicitly center aligned
     textInput->setHAlign(QQuickTextInput::AlignHCenter);
     QCOMPARE(textInput->effectiveHAlign(), textInput->hAlign());
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignHCenter);
-    QVERIFY(textInput->boundingRect().left() < canvas.width()/2);
-    QVERIFY(textInput->boundingRect().right() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll < canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.right() - textInputPrivate->hscroll > canvas.width()/2);
 
     // reseted alignment should go back to following the text reading direction
     textInput->resetHAlign();
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignRight);
     QCOMPARE(textInput->effectiveHAlign(), textInput->hAlign());
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll > canvas.width()/2);
 
     // mirror the text item
     QQuickItemPrivate::get(textInput)->setLayoutMirror(true);
@@ -1263,19 +1265,19 @@ void tst_qquicktextinput::horizontalAlignment_RightToLeft()
     // mirrored implicit alignment should continue to follow the reading direction of the text
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignRight);
     QCOMPARE(textInput->effectiveHAlign(), textInput->hAlign());
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll > canvas.width()/2);
 
     // explicitly right aligned behaves as left aligned
     textInput->setHAlign(QQuickTextInput::AlignRight);
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignRight);
     QCOMPARE(textInput->effectiveHAlign(), QQuickTextInput::AlignLeft);
-    QVERIFY(textInput->boundingRect().left() < canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll < canvas.width()/2);
 
     // mirrored explicitly left aligned behaves as right aligned
     textInput->setHAlign(QQuickTextInput::AlignLeft);
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignLeft);
     QCOMPARE(textInput->effectiveHAlign(), QQuickTextInput::AlignRight);
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll > canvas.width()/2);
 
     // disable mirroring
     QQuickItemPrivate::get(textInput)->setLayoutMirror(false);
@@ -1285,7 +1287,7 @@ void tst_qquicktextinput::horizontalAlignment_RightToLeft()
     // English text should be implicitly left aligned
     textInput->setText("Hello world!");
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignLeft);
-    QVERIFY(textInput->boundingRect().left() < canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll < canvas.width()/2);
 
     canvas.requestActivateWindow();
     QTest::qWaitForWindowShown(&canvas);
@@ -1313,7 +1315,7 @@ void tst_qquicktextinput::horizontalAlignment_RightToLeft()
         QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
     textInput->setHAlign(QQuickTextInput::AlignRight);
     QCOMPARE(textInput->hAlign(), QQuickTextInput::AlignRight);
-    QVERIFY(textInput->boundingRect().left() > canvas.width()/2);
+    QVERIFY(textInputPrivate->boundingRect.left() - textInputPrivate->hscroll > canvas.width()/2);
 
     QString componentStr = "import QtQuick 2.0\nTextInput {}";
     QDeclarativeComponent textComponent(&engine);
@@ -1335,18 +1337,52 @@ void tst_qquicktextinput::verticalAlignment()
     QVERIFY(textInputPrivate != 0);
 
     QCOMPARE(textInput->vAlign(), QQuickTextInput::AlignTop);
-    QVERIFY(textInput->boundingRect().bottom() < canvas.height() / 2);
+    QVERIFY(textInputPrivate->boundingRect.bottom() - textInputPrivate->vscroll < canvas.height() / 2);
 
     // bottom aligned
     textInput->setVAlign(QQuickTextInput::AlignBottom);
     QCOMPARE(textInput->vAlign(), QQuickTextInput::AlignBottom);
-    QVERIFY(textInput->boundingRect().top () > canvas.height() / 2);
+    QVERIFY(textInputPrivate->boundingRect.top() - textInputPrivate->vscroll > canvas.height() / 2);
 
     // explicitly center aligned
     textInput->setVAlign(QQuickTextInput::AlignVCenter);
     QCOMPARE(textInput->vAlign(), QQuickTextInput::AlignVCenter);
-    QVERIFY(textInput->boundingRect().top() < canvas.height() / 2);
-    QVERIFY(textInput->boundingRect().bottom() > canvas.height() / 2);
+    QVERIFY(textInputPrivate->boundingRect.top() - textInputPrivate->vscroll < canvas.height() / 2);
+    QVERIFY(textInputPrivate->boundingRect.bottom() - textInputPrivate->vscroll > canvas.height() / 2);
+}
+
+void tst_qquicktextinput::boundingRect()
+{
+    QDeclarativeComponent component(&engine);
+    component.setData("import QtQuick 2.0\n TextInput {}", QUrl());
+    QScopedPointer<QObject> object(component.create());
+    QQuickTextInput *input = qobject_cast<QQuickTextInput *>(object.data());
+    QVERIFY(input);
+
+    QCOMPARE(input->width() + input->cursorRectangle().width(), input->boundingRect().width());
+    QCOMPARE(input->height(), input->boundingRect().height());
+
+    input->setText("Hello World");
+    QCOMPARE(input->width() + input->cursorRectangle().width(), input->boundingRect().width());
+    QCOMPARE(input->height(), input->boundingRect().height());
+
+    // bounding rect shouldn't exceed the size of the item, expect for the cursor width;
+    input->setWidth(input->width() / 2);
+    QCOMPARE(input->width() + input->cursorRectangle().width(), input->boundingRect().width());
+    QCOMPARE(input->height(), input->boundingRect().height());
+
+    input->setHeight(input->height() * 2);
+    QCOMPARE(input->width() + input->cursorRectangle().width(), input->boundingRect().width());
+    QCOMPARE(input->height(), input->boundingRect().height());
+
+    QDeclarativeComponent cursorComponent(&engine);
+    cursorComponent.setData("import QtQuick 2.0\nRectangle { height: 20; width: 8 }", QUrl());
+
+    input->setCursorDelegate(&cursorComponent);
+
+    // If a cursor delegate is used it's size should determine the excess width.
+    QCOMPARE(input->width() + 8, input->boundingRect().width());
+    QCOMPARE(input->height(), input->boundingRect().height());
 }
 
 void tst_qquicktextinput::positionAt()