Fix incorrect text alignment in TextEdit.

QTextDocument always spans the full width of a TextEdit so the text
node shouldn't be offset by the x position of the bounding rect.

Change-Id: I882a44baeea4d054279cadc5632df6d8863caea1
Reviewed-by: Yann Bodson <yann.bodson@nokia.com>

2 files changed, 102 insertions, 0 deletions

diff --git a/tests/auto/quick/qquicktextedit/data/hAlignVisual.qml b/tests/auto/quick/qquicktextedit/data/hAlignVisual.qml
new file mode 100644
index 0000000000..136e5d21a2
--- /dev/null
+++ b/tests/auto/quick/qquicktextedit/data/hAlignVisual.qml
@@ -0,0 +1,13 @@
+import QtQuick 2.0
+
+Rectangle {
+    width: 200
+    height: 100
+
+    Text {
+        objectName: "textItem"
+        text: "AA\nBBBBB\nCCCCCCCCCCCCCCCC"
+        anchors.centerIn: parent
+        horizontalAlignment: Text.AlignLeft
+    }
+}
diff --git a/tests/auto/quick/qquicktextedit/tst_qquicktextedit.cpp b/tests/auto/quick/qquicktextedit/tst_qquicktextedit.cpp
index c7bf6af6ee..34d7cedca5 100644
--- a/tests/auto/quick/qquicktextedit/tst_qquicktextedit.cpp
+++ b/tests/auto/quick/qquicktextedit/tst_qquicktextedit.cpp
@@ -109,6 +109,7 @@ private slots:
     // ### these tests may be trivial
     void hAlign();
     void hAlign_RightToLeft();
+    void hAlignVisual();
     void vAlign();
     void font();
     void color();
@@ -792,6 +793,94 @@ void tst_qquicktextedit::hAlign_RightToLeft()
     QVERIFY(emptyEdit->cursorRectangle().left() > canvas.width()/2);
 }
 
+
+static int numberOfNonWhitePixels(int fromX, int toX, const QImage &image)
+{
+    int pixels = 0;
+    for (int x = fromX; x < toX; ++x) {
+        for (int y = 0; y < image.height(); ++y) {
+            if (image.pixel(x, y) != qRgb(255, 255, 255))
+                pixels++;
+        }
+    }
+    return pixels;
+}
+
+void tst_qquicktextedit::hAlignVisual()
+{
+    QQuickView view(testFileUrl("hAlignVisual.qml"));
+    view.show();
+    view.requestActivateWindow();
+    QTest::qWaitForWindowShown(&view);
+
+    QQuickText *text = view.rootObject()->findChild<QQuickText*>("textItem");
+    QVERIFY(text != 0);
+    {
+        // Left Align
+        QImage image = view.grabFrameBuffer();
+        int left = numberOfNonWhitePixels(0, image.width() / 3, image);
+        int mid = numberOfNonWhitePixels(image.width() / 3, 2 * image.width() / 3, image);
+        int right = numberOfNonWhitePixels( 2 * image.width() / 3, image.width(), image);
+        QVERIFY(left > mid);
+        QVERIFY(mid > right);
+    }
+    {
+        // HCenter Align
+        text->setHAlign(QQuickText::AlignHCenter);
+        QImage image = view.grabFrameBuffer();
+        int left = numberOfNonWhitePixels(0, image.width() / 3, image);
+        int mid = numberOfNonWhitePixels(image.width() / 3, 2 * image.width() / 3, image);
+        int right = numberOfNonWhitePixels( 2 * image.width() / 3, image.width(), image);
+        QVERIFY(left < mid);
+        QVERIFY(mid > right);
+    }
+    {
+        // Right Align
+        text->setHAlign(QQuickText::AlignRight);
+        QImage image = view.grabFrameBuffer();
+        int left = numberOfNonWhitePixels(0, image.width() / 3, image);
+        int mid = numberOfNonWhitePixels(image.width() / 3, 2 * image.width() / 3, image);
+        int right = numberOfNonWhitePixels( 2 * image.width() / 3, image.width(), image);
+        QVERIFY(left < mid);
+        QVERIFY(mid < right);
+    }
+
+    text->setWidth(200);
+
+    {
+        // Left Align
+        QImage image = view.grabFrameBuffer();
+        int x = qCeil(text->implicitWidth());
+        int left = numberOfNonWhitePixels(0, x, image);
+        int right = numberOfNonWhitePixels(x, image.width() - x, image);
+        QVERIFY(left > 0);
+        QVERIFY(right == 0);
+    }
+    {
+        // HCenter Align
+        text->setHAlign(QQuickText::AlignHCenter);
+        QImage image = view.grabFrameBuffer();
+        int x1 = qFloor(image.width() - text->implicitWidth()) / 2;
+        int x2 = image.width() - x1;
+        int left = numberOfNonWhitePixels(0, x1, image);
+        int mid = numberOfNonWhitePixels(x1, x2 - x1, image);
+        int right = numberOfNonWhitePixels(x2, image.width() - x2, image);
+        QVERIFY(left == 0);
+        QVERIFY(mid > 0);
+        QVERIFY(right == 0);
+    }
+    {
+        // Right Align
+        text->setHAlign(QQuickText::AlignRight);
+        QImage image = view.grabFrameBuffer();
+        int x = image.width() - qCeil(text->implicitWidth());
+        int left = numberOfNonWhitePixels(0, x, image);
+        int right = numberOfNonWhitePixels(x, image.width() - x, image);
+        QVERIFY(left == 0);
+        QVERIFY(right > 0);
+    }
+}
+
 void tst_qquicktextedit::vAlign()
 {
     //test one align each, and then test if two align fails.