Changeset 769 for trunk/src/gui/graphicsview/qgraphicsitem.cpp

Timestamp:

Aug 2, 2010, 9:27:30 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.6.3 sources from branches/vendor/nokia/qt.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/gui/graphicsview/qgraphicsitem.cpp (modified) (23 diffs)

trunk/src/gui/graphicsview/qgraphicsitem.cpp

@@ -320 +320 @@
 
     \value ItemClipsToShape The item clips to its own shape. The item cannot
-    draw or receive mouse, tablet, drag and drop or hover events outside ts
+    draw or receive mouse, tablet, drag and drop or hover events outside its
     shape. It is disabled by default. This behavior is enforced by
     QGraphicsView::drawItems() or QGraphicsScene::drawItems(). This flag was
@@ -358 +358 @@
     this flag, the child will be stacked behind it. This flag is useful for
     drop shadow effects and for decoration objects that follow the parent
-    item's geometry without drawing on top of it.
+    item's geometry without drawing on top of it. This flag was introduced
+    in Qt 4.5.
 
     \value ItemUsesExtendedStyleOption The item makes use of either
-    \l{QStyleOptionGraphicsItem::}{exposedRect} or
-    \l{QStyleOptionGraphicsItem::}{matrix} in QStyleOptionGraphicsItem. By default,
-    the \l{QStyleOptionGraphicsItem::}{exposedRect} is initialized to the item's
-    boundingRect() and the \l{QStyleOptionGraphicsItem::}{matrix} is untransformed.
-    You can enable this flag for the style options to be set up with more
-    fine-grained values.
-    Note that QStyleOptionGraphicsItem::levelOfDetail is unaffected by this flag
+    \l{QStyleOptionGraphicsItem::} {exposedRect} or
+    \l{QStyleOptionGraphicsItem::} {matrix} in
+    QStyleOptionGraphicsItem. By default, the
+    \l{QStyleOptionGraphicsItem::} {exposedRect} is initialized to the
+    item's boundingRect() and the
+    \l{QStyleOptionGraphicsItem::}{matrix} is untransformed.  You can
+    enable this flag for the style options to be set up with more
+    fine-grained values.  Note that
+    QStyleOptionGraphicsItem::levelOfDetail is unaffected by this flag
     and always initialized to 1. Use
-    QStyleOptionGraphicsItem::levelOfDetailFromTransform() if you need a higher
-    value.
+    QStyleOptionGraphicsItem::levelOfDetailFromTransform() if you need
+    a higher value. This flag was introduced in Qt 4.6.
 
     \value ItemHasNoContents The item does not paint anything (i.e., calling
@@ -388 +391 @@
     This flag was introduced in Qt 4.6.
 
-    \value ItemNegativeZStacksBehindParent The item automatically stacks behind
-    it's parent if it's z-value is negative. This flag enables setZValue() to
-    toggle ItemStacksBehindParent.
+    \value ItemNegativeZStacksBehindParent The item automatically
+    stacks behind it's parent if it's z-value is negative. This flag
+    enables setZValue() to toggle ItemStacksBehindParent. This flag
+    was introduced in Qt 4.6.
 
     \value ItemIsPanel The item is a panel. A panel provides activation and
@@ -410 +414 @@
 /*!
     \enum QGraphicsItem::GraphicsItemChange
-
-        ItemVisibleHasChanged,
-        ItemEnabledHasChanged,
-        ItemSelectedHasChanged,
-        ItemParentHasChanged,
-        ItemSceneHasChanged
 
     This enum describes the state changes that are notified by
@@ -644 +642 @@
 
     The values are:
-    \value NonModal   The panel is not modal and does not block input to other panels.
-    \value PanelModal The panel is modal to a single item hierarchy and blocks input to its parent pane, all grandparent panels, and all siblings of its parent and grandparent panels.
-    \value SceneModal The window is modal to the entire scene and blocks input to all panels.
+
+    \value NonModal The panel is not modal and does not block input to
+    other panels. This is the default value for panels.
+
+    \value PanelModal The panel is modal to a single item hierarchy
+    and blocks input to its parent pane, all grandparent panels, and
+    all siblings of its parent and grandparent panels.
+
+    \value SceneModal The window is modal to the entire scene and
+    blocks input to all panels.
 
     \sa QGraphicsItem::setPanelModality(), QGraphicsItem::panelModality(), QGraphicsItem::ItemIsPanel
@@ -1126 +1131 @@
     }
 
+    // Resolve depth.
+    invalidateDepthRecursively();
+
     if ((parent = newParent)) {
         if (parent->d_func()->scene && parent->d_func()->scene != scene) {
@@ -1176 +1184 @@
     }
 
-    // Resolve depth.
-    invalidateDepthRecursively();
     dirtySceneTransform = 1;
 
@@ -1393 +1399 @@
     delete d_ptr->transformData;
 
-    qt_dataStore()->data.remove(this);
+    if (QGraphicsItemCustomDataStore *dataStore = qt_dataStore())
+        dataStore->data.remove(this);
 }
 
@@ -1571 +1578 @@
 
 /*!
-    Sets this item's parent item to \a parent. If this item already has a
-    parent, it is first removed from the previous parent. If \a parent is 0,
-    this item will become a top-level item.
-
-    Note that this implicitly adds this graphics item to the scene of
-    the parent. You should not \l{QGraphicsScene::addItem()}{add} the
-    item to the scene yourself.
-
-    Calling this function on an item that is an ancestor of \a parent have undefined behaviour.
-
-    \sa parentItem(), childItems()
+  Sets this item's parent item to \a newParent. If this item already
+  has a parent, it is first removed from the previous parent. If \a
+  newParent is 0, this item will become a top-level item.
+
+  Note that this implicitly adds this graphics item to the scene of
+  the parent. You should not \l{QGraphicsScene::addItem()}{add} the
+  item to the scene yourself.
+
+  Calling this function on an item that is an ancestor of \a newParent
+  have undefined behaviour.
+
+  \sa parentItem(), childItems()
 */
 void QGraphicsItem::setParentItem(QGraphicsItem *newParent)
@@ -1876 +1884 @@
     bool noVisualChange = (mode == NoCache && lastMode == NoCache)
                           || (mode == NoCache && lastMode == DeviceCoordinateCache)
-                          || (mode == DeviceCoordinateCache && lastMode == NoCache);
+                          || (mode == DeviceCoordinateCache && lastMode == NoCache)
+                          || (mode == DeviceCoordinateCache && lastMode == DeviceCoordinateCache);
     if (mode == NoCache) {
         d_ptr->removeExtraItemCache();
@@ -2170 +2179 @@
         if (c)
             c->purge();
-        if (scene)
+        if (scene) {
+#ifndef QT_NO_GRAPHICSEFFECT
+            invalidateParentGraphicsEffectsRecursively();
+#endif //QT_NO_GRAPHICSEFFECT
             scene->d_func()->markDirty(q_ptr, QRectF(), /*invalidateChildren=*/false, /*force=*/true);
+        }
     }
 
     // Certain properties are dropped as an item becomes invisible.
+    bool hasFocus = q_ptr->hasFocus();
     if (!newVisible) {
         if (scene) {
@@ -2184 +2198 @@
                 scene->d_func()->leaveModal(q_ptr);
         }
-        if (q_ptr->hasFocus() && scene) {
+        if (hasFocus && scene) {
             // Hiding the closest non-panel ancestor of the focus item
             QGraphicsItem *focusItem = scene->focusItem();
@@ -2197 +2211 @@
             }
             if (clear)
-                q_ptr->clearFocus();
+                clearFocusHelper(/* giveFocusToParent = */ false);
         }
         if (q_ptr->isSelected())
@@ -2235 +2249 @@
 
     // Enable subfocus
-    if (scene && newVisible) {
-        QGraphicsItem *p = parent;
-        bool done = false;
-        while (p) {
-            if (p->flags() & QGraphicsItem::ItemIsFocusScope) {
-                QGraphicsItem *fsi = p->d_ptr->focusScopeItem;
-                if (q_ptr == fsi || q_ptr->isAncestorOf(fsi)) {
-                    done = true;
-                    while (fsi->d_ptr->focusScopeItem && fsi->d_ptr->focusScopeItem->isVisible())
-                        fsi = fsi->d_ptr->focusScopeItem;
-                    scene->setFocusItem(fsi);
+    if (scene) {
+        if (newVisible) {
+            // Item is shown
+            QGraphicsItem *p = parent;
+            bool done = false;
+            while (p) {
+                if (p->flags() & QGraphicsItem::ItemIsFocusScope) {
+                    QGraphicsItem *fsi = p->d_ptr->focusScopeItem;
+                    if (q_ptr == fsi || q_ptr->isAncestorOf(fsi)) {
+                        done = true;
+                        while (fsi->d_ptr->focusScopeItem && fsi->d_ptr->focusScopeItem->isVisible())
+                            fsi = fsi->d_ptr->focusScopeItem;
+                        fsi->d_ptr->setFocusHelper(Qt::OtherFocusReason, /* climb = */ true,
+                                                   /* focusFromShow = */ true);
+                    }
+                    break;
                 }
-                break;
+                p = p->d_ptr->parent;
             }
-            p = p->d_ptr->parent;
-        }
-        if (!done) {
-            QGraphicsItem *fi = subFocusItem;
-            if (fi && fi != scene->focusItem()) {
-                scene->setFocusItem(fi);
+            if (!done) {
+                QGraphicsItem *fi = subFocusItem;
+                if (fi && fi != scene->focusItem()) {
+                    scene->setFocusItem(fi);
+                }
+            }
+        } else {
+            // Item is hidden
+            if (hasFocus) {
+                QGraphicsItem *p = parent;
+                while (p) {
+                    if (p->flags() & QGraphicsItem::ItemIsFocusScope) {
+                        if (p->d_ptr->visible) {
+                            p->d_ptr->setFocusHelper(Qt::OtherFocusReason, /* climb = */ true,
+                                                     /* focusFromShow = */ true);
+                        }
+                        break;
+                    }
+                    p = p->d_ptr->parent;
+                }
             }
         }
@@ -3105 +3138 @@
 void QGraphicsItem::setFocus(Qt::FocusReason focusReason)
 {
-    d_ptr->setFocusHelper(focusReason, /* climb = */ true);
+    d_ptr->setFocusHelper(focusReason, /* climb = */ true, /* focusFromShow = */ false);
 }
 
@@ -3111 +3144 @@
     \internal
 */
-void QGraphicsItemPrivate::setFocusHelper(Qt::FocusReason focusReason, bool climb)
+void QGraphicsItemPrivate::setFocusHelper(Qt::FocusReason focusReason, bool climb, bool focusFromShow)
 {
     // Disabled / unfocusable items cannot accept focus.
@@ -3131 +3164 @@
         if (p->flags() & QGraphicsItem::ItemIsFocusScope) {
             p->d_ptr->focusScopeItem = q_ptr;
-            if (!p->focusItem()) {
+            if (!p->focusItem() && !focusFromShow) {
                 // If you call setFocus on a child of a focus scope that
                 // doesn't currently have a focus item, then stop.
@@ -3172 +3205 @@
 void QGraphicsItem::clearFocus()
 {
-    // Pass focus to the closest parent focus scope.
-    if (!d_ptr->inDestructor) {
-        QGraphicsItem *p = d_ptr->parent;
-        while (p) {
-            if (p->flags() & ItemIsFocusScope) {
-                p->d_ptr->setFocusHelper(Qt::OtherFocusReason, /* climb = */ false);
-                return;
+    d_ptr->clearFocusHelper(/* giveFocusToParent = */ true);
+}
+
+/*!
+    \internal
+*/
+void QGraphicsItemPrivate::clearFocusHelper(bool giveFocusToParent)
+{
+    if (giveFocusToParent) {
+        // Pass focus to the closest parent focus scope
+        if (!inDestructor) {
+            QGraphicsItem *p = parent;
+            while (p) {
+                if (p->flags() & QGraphicsItem::ItemIsFocusScope) {
+                    p->d_ptr->setFocusHelper(Qt::OtherFocusReason, /* climb = */ false,
+                                             /* focusFromShow = */ false);
+                    return;
+                }
+                p = p->d_ptr->parent;
             }
-            p = p->d_ptr->parent;
         }
     }
 
     // Invisible items with focus must explicitly clear subfocus.
-    d_ptr->clearSubFocus(this);
-
-    if (hasFocus()) {
+    clearSubFocus(q_ptr);
+
+    if (q_ptr->hasFocus()) {
         // If this item has the scene's input focus, clear it.
-        d_ptr->scene->setFocusItem(0);
+        scene->setFocusItem(0);
     }
 }
@@ -3535 +3579 @@
     if (!(d_ptr->flags & ItemSendsGeometryChanges)) {
         d_ptr->setPosHelper(pos);
+        if (d_ptr->isWidget)
+            static_cast<QGraphicsWidget *>(this)->d_func()->setGeometryFromSetPos();
         return;
     }
@@ -7257 +7303 @@
         QGraphicsScenePrivate *scenePrivate = d_ptr->scene->d_func();
         scenePrivate->index->prepareBoundingRectChange(this);
-        scenePrivate->markDirty(this, QRectF(), /*invalidateChildren=*/true);
+        scenePrivate->markDirty(this, QRectF(), /*invalidateChildren=*/true, /*force=*/false,
+                                /*ignoreOpacity=*/ false, /*removingItemFromScene=*/ false,
+                                /*updateBoundingRect=*/true);
 
         // For compatibility reasons, we have to update the item's old geometry
@@ -10802 +10850 @@
 }
 
+// sourceRect must be in the given coordinate system
 QRect QGraphicsItemEffectSourcePrivate::paddedEffectRect(Qt::CoordinateSystem system, QGraphicsEffect::PixmapPadMode mode, const QRectF &sourceRect, bool *unpadded) const
 {
@@ -10811 +10860 @@
     if (mode == QGraphicsEffect::PadToEffectiveBoundingRect) {
         if (info) {
-            effectRectF = item->graphicsEffect()->boundingRectFor(boundingRect(Qt::DeviceCoordinates));
+            QRectF deviceRect = system == Qt::DeviceCoordinates ? sourceRect : info->painter->worldTransform().mapRect(sourceRect);
+            effectRectF = item->graphicsEffect()->boundingRectFor(deviceRect);
             if (unpadded)
                 *unpadded = (effectRectF.size() == sourceRect.size());
@@ -10860 +10910 @@
     }
 
-    if (deviceCoordinates) {
-        // Clip to viewport rect.
-        int left, top, right, bottom;
-        effectRect.getCoords(&left, &top, &right, &bottom);
-        if (left < 0) {
-            if (offset)
-                offset->rx() += -left;
-            effectRect.setX(0);
-        }
-        if (top < 0) {
-            if (offset)
-                offset->ry() += -top;
-            effectRect.setY(0);
-        }
-        // NB! We use +-1 for historical reasons (see QRect documentation).
-        QPaintDevice *device = info->painter->device();
-        const int deviceWidth = device->width();
-        const int deviceHeight = device->height();
-        if (right + 1 > deviceWidth)
-            effectRect.setRight(deviceWidth - 1);
-        if (bottom + 1 > deviceHeight)
-            effectRect.setBottom(deviceHeight -1);
-
-    }
     if (effectRect.isEmpty())
         return QPixmap();