Changeset 846 for trunk/src/gui/painting/qpainterpath.cpp

Timestamp:

May 5, 2011, 5:36:53 AM (14 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/gui/painting/qpainterpath.cpp (modified) (10 diffs)

trunk/src/gui/painting/qpainterpath.cpp

@@ -1 +1 @@
 /****************************************************************************
 **
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
@@ -1197 +1197 @@
     d->elements += other.d_func()->elements;
 
-    d->elements[first].type = LineToElement;
+    if (first != 0)
+        d->elements[first].type = LineToElement;
 
     // avoid duplicate points
@@ -1258 +1259 @@
 {
     ensureData();
+    if (d_func()->fillRule == fillRule)
+        return;
     detach();
 
@@ -1913 +1916 @@
         case QPainterPath::MoveToElement:
             if (i > 0
-                && qFuzzyCompare(last_pt.x(), last_start.y())
+                && qFuzzyCompare(last_pt.x(), last_start.x())
                 && qFuzzyCompare(last_pt.y(), last_start.y())
                 && qt_painterpath_isect_line_rect(last_pt.x(), last_pt.y(),
@@ -2306 +2309 @@
     returns a reference to the \a stream.
 
-    \sa {Format of the QDataStream Operators}
+    \sa {Serializing Qt Data Types}
 */
 QDataStream &operator<<(QDataStream &s, const QPainterPath &p)
@@ -2333 +2336 @@
     and returns a reference to the \a stream.
 
-    \sa {Format of the QDataStream Operators}
+    \sa {Serializing Qt Data Types}
 */
 QDataStream &operator>>(QDataStream &s, QPainterPath &p)
@@ -3166 +3169 @@
     Set operations on paths will treat the paths as areas. Non-closed
     paths will be treated as implicitly closed.
+    Bezier curves may be flattened to line segments due to numerical instability of
+    doing bezier curve intersections.
 
     \sa intersected(), subtracted()
@@ -3181 +3186 @@
 
     Returns a path which is the intersection of this path's fill area and \a p's fill area.
+    Bezier curves may be flattened to line segments due to numerical instability of
+    doing bezier curve intersections.
 */
 QPainterPath QPainterPath::intersected(const QPainterPath &p) const
@@ -3197 +3204 @@
     Set operations on paths will treat the paths as areas. Non-closed
     paths will be treated as implicitly closed.
-
+    Bezier curves may be flattened to line segments due to numerical instability of
+    doing bezier curve intersections.
 */
 QPainterPath QPainterPath::subtracted(const QPainterPath &p) const
@@ -3226 +3234 @@
     and returning a path containing no intersecting edges. Consecutive parallel lines will also
     be merged. The simplified path will always use the default fill rule, Qt::OddEvenFill.
+    Bezier curves may be flattened to line segments due to numerical instability of
+    doing bezier curve intersections.
 */
 QPainterPath QPainterPath::simplified() const