TextArea: add support for background insets

Same as 5adce042 for QQuickControl.

[ChangeLog][Controls][TextArea] Added topInset, bottomInset, leftInset,
and rightInset properties to control the geometry of the background
similarly to how paddings control the geometry of the contentItem.

Change-Id: I1e1b3a79a9f477ec7b64ec4c6cc8021bbf48adc0
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 22 insertions, 0 deletions

diff --git a/src/quicktemplates2/qquicktextarea_p_p.h b/src/quicktemplates2/qquicktextarea_p_p.h
index 90e4db7b..408cc391 100644
--- a/src/quicktemplates2/qquicktextarea_p_p.h
+++ b/src/quicktemplates2/qquicktextarea_p_p.h
@@ -80,6 +80,17 @@ public:
         return static_cast<QQuickTextAreaPrivate *>(QObjectPrivate::get(item));
     }
 
+    inline QMarginsF getInset() const { return QMarginsF(getLeftInset(), getTopInset(), getRightInset(), getBottomInset()); }
+    inline qreal getTopInset() const { return extra.isAllocated() ? extra->topInset : 0; }
+    inline qreal getLeftInset() const { return extra.isAllocated() ? extra->leftInset : 0; }
+    inline qreal getRightInset() const { return extra.isAllocated() ? extra->rightInset : 0; }
+    inline qreal getBottomInset() const { return extra.isAllocated() ? extra->bottomInset : 0; }
+
+    void setTopInset(qreal value, bool reset = false);
+    void setLeftInset(qreal value, bool reset = false);
+    void setRightInset(qreal value, bool reset = false);
+    void setBottomInset(qreal value, bool reset = false);
+
     void resizeBackground();
 
     void resolveFont();
@@ -138,11 +149,22 @@ public:
 #endif
 
     struct ExtraData {
+        bool hasTopInset = false;
+        bool hasLeftInset = false;
+        bool hasRightInset = false;
+        bool hasBottomInset = false;
+        bool hasBackgroundWidth = false;
+        bool hasBackgroundHeight = false;
+        qreal topInset = 0;
+        qreal leftInset = 0;
+        qreal rightInset = 0;
+        qreal bottomInset = 0;
         QFont requestedFont;
         QPalette requestedPalette;
     };
     QLazilyAllocated<ExtraData> extra;
 
+    bool resizingBackground = false;
     QPalette resolvedPalette;
     QQuickDeferredPointer<QQuickItem> background;
     QString placeholder;