File indexing completed on 2024-04-28 04:20:11
0001 0002 /* 0003 Copyright (c) 2003-2007 Clarence Dang <dang@kde.org> 0004 All rights reserved. 0005 0006 Redistribution and use in source and binary forms, with or without 0007 modification, are permitted provided that the following conditions 0008 are met: 0009 0010 1. Redistributions of source code must retain the above copyright 0011 notice, this list of conditions and the following disclaimer. 0012 2. Redistributions in binary form must reproduce the above copyright 0013 notice, this list of conditions and the following disclaimer in the 0014 documentation and/or other materials provided with the distribution. 0015 0016 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 0017 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 0018 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 0019 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 0020 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 0021 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 0022 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 0023 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 0024 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 0025 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 0026 */ 0027 0028 0029 #define DEBUG_KP_COMMAND_HISTORY 0 0030 0031 0032 #include "kpCommandHistory.h" 0033 0034 #include "layers/selections/kpAbstractSelection.h" 0035 #include "mainWindow/kpMainWindow.h" 0036 #include "tools/kpTool.h" 0037 #include "commands/tools/selection/kpToolSelectionCreateCommand.h" 0038 0039 0040 kpCommandHistory::kpCommandHistory (bool doReadConfig, kpMainWindow *mainWindow) 0041 : kpCommandHistoryBase (doReadConfig, mainWindow->actionCollection ()), 0042 m_mainWindow (mainWindow) 0043 { 0044 } 0045 0046 kpCommandHistory::~kpCommandHistory () = default; 0047 0048 0049 static bool NextUndoCommandIsCreateBorder (kpCommandHistory *commandHistory) 0050 { 0051 Q_ASSERT (commandHistory); 0052 0053 kpCommand *cmd = commandHistory->nextUndoCommand (); 0054 if (!cmd) { 0055 return false; 0056 } 0057 0058 auto *c = dynamic_cast <kpToolSelectionCreateCommand *> (cmd); 0059 if (!c) { 0060 return false; 0061 } 0062 0063 const kpAbstractSelection *sel = c->fromSelection (); 0064 Q_ASSERT (sel); 0065 0066 return (!sel->hasContent ()); 0067 } 0068 0069 // public 0070 void kpCommandHistory::addCreateSelectionCommand (kpToolSelectionCreateCommand *cmd, 0071 bool execute) 0072 { 0073 if (cmd->fromSelection ()->hasContent ()) 0074 { 0075 addCommand (cmd, execute); 0076 return; 0077 } 0078 0079 if (::NextUndoCommandIsCreateBorder (this)) 0080 { 0081 setNextUndoCommand (cmd); 0082 if (execute) { 0083 cmd->execute (); 0084 } 0085 } 0086 else { 0087 addCommand (cmd, execute); 0088 } 0089 } 0090 0091 //--------------------------------------------------------------------- 0092 0093 // public slot virtual [base KCommandHistory] 0094 void kpCommandHistory::undo () 0095 { 0096 #if DEBUG_KP_COMMAND_HISTORY 0097 qCDebug(kpLogCommands) << "kpCommandHistory::undo() CALLED!"; 0098 #endif 0099 if (m_mainWindow && m_mainWindow->toolHasBegunShape ()) 0100 { 0101 #if DEBUG_KP_COMMAND_HISTORY 0102 qCDebug(kpLogCommands) << "\thas begun shape - cancel draw"; 0103 #endif 0104 m_mainWindow->tool ()->cancelShapeInternal (); 0105 } 0106 else { 0107 kpCommandHistoryBase::undo (); 0108 } 0109 } 0110 0111 //--------------------------------------------------------------------- 0112 0113 // public slot virtual [base KCommandHistory] 0114 void kpCommandHistory::redo () 0115 { 0116 if (m_mainWindow && m_mainWindow->toolHasBegunShape ()) 0117 { 0118 // Not completely obvious but what else can we do? 0119 // 0120 // Ignoring the request would not be intuitive for tools like 0121 // Polygon & Polyline (where it's not always apparent to the user 0122 // that s/he's still drawing a shape even though the mouse isn't 0123 // down). 0124 m_mainWindow->tool ()->cancelShapeInternal (); 0125 } 0126 else { 0127 kpCommandHistoryBase::redo (); 0128 } 0129 } 0130 0131 #include "moc_kpCommandHistory.cpp"