Add advance property to QQuickText

This is a step on the way to certain optimization possibilities
for text in Qt Quick. Basically, to allow users the ability to
split text into separate items (so that you can distinguish
dynamic from static, and unshaped from shaped text), we also
need a way to string those items together visually later. The
advance property is required for this.

[ChangeLog][QtQuick][Text] Added "advance" property to Text element.

Task-number: QTBUG-56728
Change-Id: I8e7bf9bac410fa9c5553b48db90956431a2873f6
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>

6 files changed, 298 insertions, 0 deletions

diff --git a/tests/manual/scenegraph_lancelot/data/text/text_advance_bidi_ltr.qml b/tests/manual/scenegraph_lancelot/data/text/text_advance_bidi_ltr.qml
new file mode 100644
index 0000000000..2f40aece89
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/data/text/text_advance_bidi_ltr.qml
@@ -0,0 +1,56 @@
+import QtQuick 2.0
+
+Item {
+    width: 320
+    height: 480
+
+    property string firstWord: "One, שתיים, "
+    property string secondWord: "Three"
+
+    Text {
+        id: referenceText
+        text: firstWord + secondWord
+        anchors.centerIn: parent
+        font.italic: true
+        font.pixelSize: 30
+    }
+
+    Text {
+        id: firstWordItem
+        anchors.left: referenceText.left
+        anchors.top: referenceText.bottom
+        text: firstWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: secondWordItem
+        anchors.left: firstWordItem.left
+        anchors.leftMargin: firstWordItem.advance.width
+        anchors.baseline: firstWordItem.baseline
+        anchors.baselineOffset: firstWordItem.advance.height
+        text: secondWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: firstWordItemRichText
+        anchors.left: referenceText.left
+        anchors.top: secondWordItem.bottom
+        text: firstWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+    Text {
+        id: secondWordItemRichText
+        anchors.left: firstWordItemRichText.left
+        anchors.leftMargin: firstWordItemRichText.advance.width
+        anchors.baseline: firstWordItemRichText.baseline
+        anchors.baselineOffset: firstWordItemRichText.advance.height
+        text: secondWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+}
diff --git a/tests/manual/scenegraph_lancelot/data/text/text_advance_hebrew.qml b/tests/manual/scenegraph_lancelot/data/text/text_advance_hebrew.qml
new file mode 100644
index 0000000000..0a9dce4d82
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/data/text/text_advance_hebrew.qml
@@ -0,0 +1,54 @@
+import QtQuick 2.0
+
+Item {
+    width: 320
+    height: 480
+
+    property string firstWord: "תורת רב־לשוני אנא "
+    property string secondWord: "של"
+
+    Text {
+        id: referenceText
+        text: firstWord + secondWord
+        anchors.centerIn: parent
+        font.italic: true
+        font.pixelSize: 30
+    }
+
+    Text {
+        id: firstWordItem
+        anchors.right: referenceText.right
+        anchors.top: referenceText.bottom
+        text: firstWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: secondWordItem
+        anchors.right: firstWordItem.left
+        anchors.baseline: firstWordItem.baseline
+        anchors.baselineOffset: firstWordItem.advance.height
+        text: secondWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: firstWordItemRichText
+        anchors.right: referenceText.right
+        anchors.top: secondWordItem.bottom
+        text: firstWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+    Text {
+        id: secondWordItemRichText
+        anchors.right: firstWordItemRichText.left
+        anchors.baseline: firstWordItemRichText.baseline
+        anchors.baselineOffset: firstWordItemRichText.advance.height
+        text: secondWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+}
diff --git a/tests/manual/scenegraph_lancelot/data/text/text_advance_latin.qml b/tests/manual/scenegraph_lancelot/data/text/text_advance_latin.qml
new file mode 100644
index 0000000000..ccab5d8c64
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/data/text/text_advance_latin.qml
@@ -0,0 +1,55 @@
+import QtQuick 2.0
+
+Item {
+    width: 320
+    height: 480
+
+    property string firstWord: "Hello "
+    property string secondWord: "World"
+
+    Text {
+        id: referenceText
+        text: firstWord + secondWord
+        anchors.centerIn: parent
+        font.italic: true
+        font.pixelSize: 30
+    }
+
+    Text {
+        id: firstWordItem
+        anchors.left: referenceText.left
+        anchors.top: referenceText.bottom
+        text: firstWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: secondWordItem
+        anchors.left: firstWordItem.left
+        anchors.leftMargin: firstWordItem.advance.width
+        anchors.baseline: firstWordItem.baseline
+        anchors.baselineOffset: firstWordItem.advance.height
+        text: secondWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: firstWordItemRichText
+        anchors.left: referenceText.left
+        anchors.top: secondWordItem.bottom
+        text: firstWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+    Text {
+        id: secondWordItemRichText
+        anchors.left: firstWordItemRichText.left
+        anchors.leftMargin: firstWordItemRichText.advance.width
+        anchors.baseline: firstWordItemRichText.baseline
+        anchors.baselineOffset: firstWordItemRichText.advance.height
+        text: secondWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+}
diff --git a/tests/manual/scenegraph_lancelot/data/text/text_advance_multiline.qml b/tests/manual/scenegraph_lancelot/data/text/text_advance_multiline.qml
new file mode 100644
index 0000000000..ae0f10718c
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/data/text/text_advance_multiline.qml
@@ -0,0 +1,55 @@
+import QtQuick 2.0
+
+Item {
+    width: 320
+    height: 480
+
+    property string firstWord: "One,\nTwo, "
+    property string secondWord: "Three"
+
+    Text {
+        id: referenceText
+        text: firstWord + secondWord
+        anchors.centerIn: parent
+        font.italic: true
+        font.pixelSize: 30
+    }
+
+    Text {
+        id: firstWordItem
+        anchors.left: referenceText.left
+        anchors.top: referenceText.bottom
+        text: firstWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: secondWordItem
+        anchors.left: firstWordItem.left
+        anchors.leftMargin: firstWordItem.advance.width
+        anchors.baseline: firstWordItem.baseline
+        anchors.baselineOffset: firstWordItem.advance.height
+        text: secondWord
+        font: referenceText.font
+    }
+
+    Text {
+        id: firstWordItemRichText
+        anchors.left: referenceText.left
+        anchors.top: secondWordItem.bottom
+        text: firstWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+    Text {
+        id: secondWordItemRichText
+        anchors.left: firstWordItemRichText.left
+        anchors.leftMargin: firstWordItemRichText.advance.width
+        anchors.baseline: firstWordItemRichText.baseline
+        anchors.baselineOffset: firstWordItemRichText.advance.height
+        text: secondWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+}
diff --git a/tests/manual/scenegraph_lancelot/data/text/text_advance_multiparagraph.qml b/tests/manual/scenegraph_lancelot/data/text/text_advance_multiparagraph.qml
new file mode 100644
index 0000000000..76f0910680
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/data/text/text_advance_multiparagraph.qml
@@ -0,0 +1,39 @@
+import QtQuick 2.0
+
+Item {
+    width: 320
+    height: 480
+
+    property string firstWord: "<p>One,</p><p>Two, "
+    property string secondWord: "Three</p>"
+
+    Text {
+        id: referenceText
+        text: firstWord + secondWord
+        anchors.centerIn: parent
+        font.italic: true
+        font.pixelSize: 30
+        textFormat: Text.RichText
+    }
+
+
+    Text {
+        id: firstWordItemRichText
+        anchors.left: referenceText.left
+        anchors.top: referenceText.bottom
+        text: firstWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+    Text {
+        id: secondWordItemRichText
+        anchors.left: firstWordItemRichText.left
+        anchors.leftMargin: firstWordItemRichText.advance.width
+        anchors.baseline: firstWordItemRichText.baseline
+        anchors.baselineOffset: firstWordItemRichText.advance.height
+        text: secondWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+}
diff --git a/tests/manual/scenegraph_lancelot/data/text/text_advance_multiparagraph_multifontsizes.qml b/tests/manual/scenegraph_lancelot/data/text/text_advance_multiparagraph_multifontsizes.qml
new file mode 100644
index 0000000000..de33d65cdc
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/data/text/text_advance_multiparagraph_multifontsizes.qml
@@ -0,0 +1,39 @@
+import QtQuick 2.0
+
+Item {
+    width: 320
+    height: 480
+
+    property string firstWord: "<p style=\"font-size: 40pt\">One,</p><p>Two, "
+    property string secondWord: "Three</p>"
+
+    Text {
+        id: referenceText
+        text: firstWord + secondWord
+        anchors.centerIn: parent
+        font.italic: true
+        font.pixelSize: 30
+        textFormat: Text.RichText
+    }
+
+
+    Text {
+        id: firstWordItemRichText
+        anchors.left: referenceText.left
+        anchors.top: referenceText.bottom
+        text: firstWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+
+    Text {
+        id: secondWordItemRichText
+        anchors.left: firstWordItemRichText.left
+        anchors.leftMargin: firstWordItemRichText.advance.width
+        anchors.baseline: firstWordItemRichText.baseline
+        anchors.baselineOffset: firstWordItemRichText.advance.height
+        text: secondWord
+        font: referenceText.font
+        textFormat: Text.RichText
+    }
+}