1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the Qt Designer of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

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    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

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    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include "qdesigner_command2_p.h"

    43 #include "formwindowbase_p.h"

    44 #include "layoutinfo_p.h"

    45 #include "qdesigner_command_p.h"

    46 #include "widgetfactory_p.h"

    47 #include "qlayout_widget_p.h"

    48 

    49 #include <QtDesigner/QDesignerFormEditorInterface>

    50 #include <QtDesigner/QDesignerMetaDataBaseInterface>

    51 

    52 #include <QtGui/QApplication>

    53 #include <QtGui/QLayout>

    54 

    55 QT_BEGIN_NAMESPACE

    56 

    57 namespace qdesigner_internal {

    58 

    59 MorphLayoutCommand::MorphLayoutCommand(QDesignerFormWindowInterface *formWindow) :

    60     QDesignerFormWindowCommand(QString(), formWindow),

    61     m_breakLayoutCommand(new BreakLayoutCommand(formWindow)),

    62     m_layoutCommand(new LayoutCommand(formWindow)),

    63     m_newType(LayoutInfo::VBox),

    64     m_layoutBase(0)

    65 {

    66 }

    67 

    68 MorphLayoutCommand::~MorphLayoutCommand()

    69 {

    70     delete m_layoutCommand;

    71     delete m_breakLayoutCommand;

    72 }

    73 

    74 bool MorphLayoutCommand::init(QWidget *w, int newType)

    75 {

    76     int oldType;

    77     QDesignerFormWindowInterface *fw = formWindow();

    78     if (!canMorph(fw, w, &oldType) || oldType == newType)

    79         return false;

    80     m_layoutBase = w;

    81     m_newType = newType;

    82     // Find all managed widgets

    83     m_widgets.clear();

    84     const QLayout *layout = LayoutInfo::managedLayout(fw->core(), w);

    85     const int count = layout->count();

    86     for (int i = 0; i < count ; i++) {

    87         if (QWidget *w = layout->itemAt(i)->widget())

    88             if (fw->isManaged(w))

    89                 m_widgets.push_back(w);

    90     }

    91     const bool reparentLayoutWidget = false; // leave QLayoutWidget intact

    92     m_breakLayoutCommand->init(m_widgets, m_layoutBase, reparentLayoutWidget);

    93     m_layoutCommand->init(m_layoutBase, m_widgets, static_cast<LayoutInfo::Type>(m_newType), m_layoutBase, reparentLayoutWidget);

    94     setText(formatDescription(core(), m_layoutBase, oldType, newType));

    95     return true;

    96 }

    97 

    98 bool MorphLayoutCommand::canMorph(const QDesignerFormWindowInterface *formWindow, QWidget *w, int *ptrToCurrentType)

    99 {

   100     if (ptrToCurrentType)

   101         *ptrToCurrentType = LayoutInfo::NoLayout;

   102     // We want a managed widget or a container page

   103     // with a level-0 managed layout

   104     QDesignerFormEditorInterface *core = formWindow->core();

   105     QLayout *layout = LayoutInfo::managedLayout(core, w);

   106     if (!layout)

   107         return false;

   108     const LayoutInfo::Type type = LayoutInfo::layoutType(core, layout);

   109     if (ptrToCurrentType)

   110         *ptrToCurrentType = type;

   111     switch (type) {

   112     case LayoutInfo::HBox:

   113     case LayoutInfo::VBox:

   114     case LayoutInfo::Grid:

   115     case LayoutInfo::Form:

   116         return true;

   117         break;

   118     case LayoutInfo::NoLayout:

   119     case LayoutInfo::HSplitter: // Nothing doing

   120     case LayoutInfo::VSplitter:

   121     case LayoutInfo::UnknownLayout:

   122         break;

   123     }

   124     return false;

   125 }

   126 

   127 void MorphLayoutCommand::redo()

   128 {

   129     m_breakLayoutCommand->redo();

   130     m_layoutCommand->redo();

   131     /* Transfer applicable properties which is a cross-section of the modified

   132      * properties except object name. */

   133     if (const LayoutProperties *properties = m_breakLayoutCommand->layoutProperties()) {

   134         const int oldMask = m_breakLayoutCommand->propertyMask();

   135         QLayout *newLayout = LayoutInfo::managedLayout(core(), m_layoutBase);

   136         const int newMask = LayoutProperties::visibleProperties(newLayout);

   137         const int applicableMask = (oldMask & newMask) & ~LayoutProperties::ObjectNameProperty;

   138         if (applicableMask)

   139             properties->toPropertySheet(core(), newLayout, applicableMask);

   140     }

   141 }

   142 

   143 void MorphLayoutCommand::undo()

   144 {

   145     m_layoutCommand->undo();

   146     m_breakLayoutCommand->undo();

   147 }

   148 

   149 QString MorphLayoutCommand::formatDescription(QDesignerFormEditorInterface * /* core*/, const QWidget *w, int oldType, int newType)

   150 {

   151     const QString oldName = LayoutInfo::layoutName(static_cast<LayoutInfo::Type>(oldType));

   152     const QString newName = LayoutInfo::layoutName(static_cast<LayoutInfo::Type>(newType));

   153     const QString widgetName = qobject_cast<const QLayoutWidget*>(w) ? w->layout()->objectName() : w->objectName();

   154     return QApplication::translate("Command", "Change layout of '%1' from %2 to %3").arg(widgetName, oldName, newName);

   155 }

   156 

   157 } // namespace qdesigner_internal

   158 

   159 QT_END_NAMESPACE