File indexing completed on 2024-12-22 04:07:23

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_TOOL_FLOW_COMMAND 0
0030 
0031 
0032 #include "kpToolFlowCommand.h"
0033 
0034 #include "document/kpDocument.h"
0035 #include "imagelib/kpImage.h"
0036 #include "pixmapfx/kpPixmapFX.h"
0037 #include "tools/kpTool.h"
0038 #include "views/manager/kpViewManager.h"
0039 
0040 #include <QRect>
0041 
0042 
0043 struct kpToolFlowCommandPrivate
0044 {
0045     kpImage image;
0046     QRect boundingRect;
0047 };
0048 
0049 
0050 kpToolFlowCommand::kpToolFlowCommand (const QString &name, kpCommandEnvironment *environ)
0051     : kpNamedCommand (name, environ),
0052       d (new kpToolFlowCommandPrivate ())
0053 {
0054     d->image = document ()->image ();
0055 }
0056 
0057 kpToolFlowCommand::~kpToolFlowCommand ()
0058 {
0059     delete d;
0060 }
0061 
0062 
0063 // public virtual [base kpCommand]
0064 kpCommandSize::SizeType kpToolFlowCommand::size () const
0065 {
0066     return ImageSize (d->image);
0067 }
0068 
0069 
0070 // public virtual [base kpCommand]
0071 void kpToolFlowCommand::execute ()
0072 {
0073     swapOldAndNew ();
0074 }
0075 
0076 // public virtual [base kpCommand]
0077 void kpToolFlowCommand::unexecute ()
0078 {
0079     swapOldAndNew ();
0080 }
0081 
0082 
0083 // private
0084 void kpToolFlowCommand::swapOldAndNew ()
0085 {
0086     if (d->boundingRect.isValid ())
0087     {
0088         const kpImage oldImage = document ()->getImageAt (d->boundingRect);
0089 
0090         document ()->setImageAt (d->image, d->boundingRect.topLeft ());
0091 
0092         d->image = oldImage;
0093     }
0094 }
0095 
0096 // public
0097 void kpToolFlowCommand::updateBoundingRect (const QPoint &point)
0098 {
0099     updateBoundingRect (QRect (point, point));
0100 }
0101 
0102 // public
0103 void kpToolFlowCommand::updateBoundingRect (const QRect &rect)
0104 {
0105 #if DEBUG_KP_TOOL_FLOW_COMMAND & 0
0106     qCDebug(kpLogCommands) << "kpToolFlowCommand::updateBoundingRect()  existing="
0107                << d->boundingRect
0108                << " plus="
0109                << rect;
0110 #endif
0111     d->boundingRect = d->boundingRect.united (rect);
0112 #if DEBUG_KP_TOOL_FLOW_COMMAND & 0
0113     qCDebug(kpLogCommands) << "\tresult=" << d->boundingRect;
0114 #endif
0115 }
0116 
0117 // public
0118 void kpToolFlowCommand::finalize ()
0119 {
0120     if (d->boundingRect.isValid ())
0121     {
0122         // Store only the needed part of doc image.
0123         d->image = kpTool::neededPixmap (d->image, d->boundingRect);
0124     }
0125     else
0126     {
0127         d->image = kpImage ();
0128     }
0129 }
0130 
0131 // public
0132 void kpToolFlowCommand::cancel ()
0133 {
0134     if (d->boundingRect.isValid ())
0135     {
0136         viewManager ()->setFastUpdates ();
0137         document ()->setImageAt (d->image, d->boundingRect.topLeft ());
0138         viewManager ()->restoreFastUpdates ();
0139     }
0140 }