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

    41 

    42 #include "commands.h"

    43 

    44 static const int setShapeRectCommandId = 1;

    45 static const int setShapeColorCommandId = 2;

    46 

    47 /******************************************************************************

    48 ** AddShapeCommand

    49 */

    50 

    51 AddShapeCommand::AddShapeCommand(Document *doc, const Shape &shape, QUndoCommand *parent)

    52     : QUndoCommand(parent)

    53 {

    54     m_doc = doc;

    55     m_shape = shape;

    56 }

    57 

    58 void AddShapeCommand::undo()

    59 {

    60     m_doc->deleteShape(m_shapeName);

    61 }

    62 

    63 void AddShapeCommand::redo()

    64 {

    65     // A shape only gets a name when it is inserted into a document

    66     m_shapeName = m_doc->addShape(m_shape);

    67     setText(QObject::tr("Add %1").arg(m_shapeName));

    68 }

    69 

    70 /******************************************************************************

    71 ** RemoveShapeCommand

    72 */

    73 

    74 RemoveShapeCommand::RemoveShapeCommand(Document *doc, const QString &shapeName,

    75                                         QUndoCommand *parent)

    76     : QUndoCommand(parent)

    77 {

    78     setText(QObject::tr("Remove %1").arg(shapeName));

    79     m_doc = doc;

    80     m_shape = doc->shape(shapeName);

    81     m_shapeName = shapeName;

    82 }

    83 

    84 void RemoveShapeCommand::undo()

    85 {

    86     m_shapeName = m_doc->addShape(m_shape);

    87 }

    88 

    89 void RemoveShapeCommand::redo()

    90 {

    91     m_doc->deleteShape(m_shapeName);

    92 }

    93 

    94 /******************************************************************************

    95 ** SetShapeColorCommand

    96 */

    97 

    98 SetShapeColorCommand::SetShapeColorCommand(Document *doc, const QString &shapeName,

    99                                             const QColor &color, QUndoCommand *parent)

   100     : QUndoCommand(parent)

   101 {

   102     setText(QObject::tr("Set %1's color").arg(shapeName));

   103 

   104     m_doc = doc;

   105     m_shapeName = shapeName;

   106     m_oldColor = doc->shape(shapeName).color();

   107     m_newColor = color;

   108 }

   109 

   110 void SetShapeColorCommand::undo()

   111 {

   112     m_doc->setShapeColor(m_shapeName, m_oldColor);

   113 }

   114 

   115 void SetShapeColorCommand::redo()

   116 {

   117     m_doc->setShapeColor(m_shapeName, m_newColor);

   118 }

   119 

   120 bool SetShapeColorCommand::mergeWith(const QUndoCommand *command)

   121 {

   122     if (command->id() != setShapeColorCommandId)

   123         return false;

   124 

   125     const SetShapeColorCommand *other = static_cast<const SetShapeColorCommand*>(command);

   126     if (m_shapeName != other->m_shapeName)

   127         return false;

   128 

   129     m_newColor = other->m_newColor;

   130     return true;

   131 }

   132 

   133 int SetShapeColorCommand::id() const

   134 {

   135     return setShapeColorCommandId;

   136 }

   137 

   138 /******************************************************************************

   139 ** SetShapeRectCommand

   140 */

   141 

   142 SetShapeRectCommand::SetShapeRectCommand(Document *doc, const QString &shapeName,

   143                                             const QRect &rect, QUndoCommand *parent)

   144     : QUndoCommand(parent)

   145 {

   146     setText(QObject::tr("Change %1's geometry").arg(shapeName));

   147 

   148     m_doc = doc;

   149     m_shapeName = shapeName;

   150     m_oldRect = doc->shape(shapeName).rect();

   151     m_newRect = rect;

   152 }

   153 

   154 void SetShapeRectCommand::undo()

   155 {

   156     m_doc->setShapeRect(m_shapeName, m_oldRect);

   157 }

   158 

   159 void SetShapeRectCommand::redo()

   160 {

   161     m_doc->setShapeRect(m_shapeName, m_newRect);

   162 }

   163 

   164 bool SetShapeRectCommand::mergeWith(const QUndoCommand *command)

   165 {

   166     if (command->id() != setShapeRectCommandId)

   167         return false;

   168 

   169     const SetShapeRectCommand *other = static_cast<const SetShapeRectCommand*>(command);

   170     if (m_shapeName != other->m_shapeName)

   171         return false;

   172 

   173     m_newRect = other->m_newRect;

   174     return true;

   175 }

   176 

   177 int SetShapeRectCommand::id() const

   178 {

   179     return setShapeRectCommandId;

   180 }