1 files changed, 376 insertions, 0 deletions
diff --git a/kolourpaint/tools/kptoolairspray.cpp b/kolourpaint/tools/kptoolairspray.cpp
new file mode 100644
index 00000000..43f8bef3
--- /dev/null
+++ b/kolourpaint/tools/kptoolairspray.cpp
@@ -0,0 +1,376 @@
+
+/*
+   Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org>
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   1. Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+   2. Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+   IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+   INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+   THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+
+#define DEBUG_KP_TOOL_SPRAYCAN 0
+
+#include <stdlib.h>
+
+#include <qbitmap.h>
+#include <qpainter.h>
+#include <qpen.h>
+#include <qpixmap.h>
+#include <qpoint.h>
+#include <qpointarray.h>
+#include <qrect.h>
+#include <qtimer.h>
+
+#include <kdebug.h>
+#include <klocale.h>
+
+#include <kpcommandhistory.h>
+#include <kpdefs.h>
+#include <kpdocument.h>
+#include <kpmainwindow.h>
+#include <kppixmapfx.h>
+#include <kptoolairspray.h>
+#include <kptooltoolbar.h>
+#include <kptoolwidgetspraycansize.h>
+#include <kpview.h>
+#include <kpviewmanager.h>
+
+
+/*
+ * kpToolAirSpray
+ */
+
+kpToolAirSpray::kpToolAirSpray (kpMainWindow *mainWindow)
+    : kpTool (i18n ("Spraycan"), i18n ("Sprays graffiti"),
+              Qt::Key_Y,
+              mainWindow, "tool_spraycan"),
+      m_currentCommand (0)
+{
+    m_timer = new QTimer (this);
+    connect (m_timer, SIGNAL (timeout ()), this, SLOT (actuallyDraw ()));
+}
+
+kpToolAirSpray::~kpToolAirSpray ()
+{
+    delete m_currentCommand;
+}
+
+
+// private
+QString kpToolAirSpray::haventBegunDrawUserMessage () const
+{
+    return i18n ("Click or drag to spray graffiti.");
+}
+
+// public virtual
+void kpToolAirSpray::begin ()
+{
+    kpToolToolBar *tb = toolToolBar ();
+
+    m_toolWidgetSpraycanSize = 0;
+    m_size = 10;
+
+    if (tb)
+    {
+        m_toolWidgetSpraycanSize = tb->toolWidgetSpraycanSize ();
+
+        if (m_toolWidgetSpraycanSize)
+        {
+            m_size = m_toolWidgetSpraycanSize->spraycanSize ();
+            connect (m_toolWidgetSpraycanSize, SIGNAL (spraycanSizeChanged (int)),
+                     this, SLOT (slotSpraycanSizeChanged (int)));
+
+            m_toolWidgetSpraycanSize->show ();
+        }
+    }
+
+    setUserMessage (haventBegunDrawUserMessage ());
+}
+
+// public virtual
+void kpToolAirSpray::end ()
+{
+    if (m_toolWidgetSpraycanSize)
+    {
+        disconnect (m_toolWidgetSpraycanSize, SIGNAL (spraycanSizeChanged (int)),
+                    this, SLOT (slotSpraycanSizeChanged (int)));
+        m_toolWidgetSpraycanSize = 0;
+    }
+
+    setUserMessage (haventBegunDrawUserMessage ());
+}
+
+// private slot
+void kpToolAirSpray::slotSpraycanSizeChanged (int size)
+{
+    m_size = size;
+}
+
+
+void kpToolAirSpray::beginDraw ()
+{
+    m_currentCommand = new kpToolAirSprayCommand (
+        color (m_mouseButton),
+        m_size,
+        mainWindow ());
+
+    // without delay
+    actuallyDraw ();
+
+    // use a timer instead of reimplementing draw() (we don't draw all the time)
+    m_timer->start (25);
+
+    setUserMessage (cancelUserMessage ());
+}
+
+void kpToolAirSpray::draw (const QPoint &thisPoint, const QPoint &, const QRect &)
+{
+    // if the user is moving the spray, make the spray line continuous
+    if (thisPoint != m_lastPoint)
+    {
+        // without delay
+        actuallyDraw ();
+    }
+
+    setUserShapePoints (thisPoint);
+}
+
+void kpToolAirSpray::actuallyDraw ()
+{
+    QPointArray pArray (10);
+    int numPoints = 0;
+
+    QPoint p = m_currentPoint;
+
+#if DEBUG_KP_TOOL_SPRAYCAN
+    kdDebug () << "kpToolAirSpray::actuallyDraw() currentPoint=" << p
+               << " size=" << m_size
+               << endl;
+#endif
+
+    int radius = m_size / 2;
+
+    for (int i = 0; i < 10; i++)
+    {
+        int dx, dy;
+
+        dx = (rand () % m_size) - radius;
+        dy = (rand () % m_size) - radius;
+
+        // make it look circular
+        // OPT: can be done better
+        if (dx * dx + dy * dy <= radius * radius)
+            pArray [numPoints++] = QPoint (p.x () + dx, p.y () + dy);
+    }
+
+    pArray.resize (numPoints);
+
+    if (numPoints > 0)
+    {
+        // leave the command to draw
+        m_currentCommand->addPoints (pArray);
+    }
+}
+
+// virtual
+void kpToolAirSpray::cancelShape ()
+{
+#if 0
+    endDraw (QPoint (), QRect ());
+    mainWindow ()->commandHistory ()->undo ();
+#else
+    m_timer->stop ();
+
+    m_currentCommand->finalize ();
+    m_currentCommand->cancel ();
+
+    delete m_currentCommand;
+    m_currentCommand = 0;
+#endif
+
+    setUserMessage (i18n ("Let go of all the mouse buttons."));
+}
+
+void kpToolAirSpray::releasedAllButtons ()
+{
+    setUserMessage (haventBegunDrawUserMessage ());
+}
+
+// virtual
+void kpToolAirSpray::endDraw (const QPoint &, const QRect &)
+{
+    m_timer->stop ();
+
+    m_currentCommand->finalize ();
+    mainWindow ()->commandHistory ()->addCommand (m_currentCommand, false /* don't exec */);
+
+    // don't delete - it's up to the commandHistory
+    m_currentCommand = 0;
+
+    setUserMessage (haventBegunDrawUserMessage ());
+}
+
+
+/*
+ * kpToolAirSprayCommand
+ */
+
+kpToolAirSprayCommand::kpToolAirSprayCommand (const kpColor &color, int size,
+                                              kpMainWindow *mainWindow)
+    : kpCommand (mainWindow),
+      m_color (color),
+      m_size (size),
+      m_newPixmapPtr (0)
+{
+    m_oldPixmap = *document ()->pixmap ();
+}
+
+kpToolAirSprayCommand::~kpToolAirSprayCommand ()
+{
+    delete m_newPixmapPtr;
+}
+
+
+// public virtual [base kpCommand]
+QString kpToolAirSprayCommand::name () const
+{
+    return i18n ("Spraycan");
+}
+
+
+// public virtual [base kpCommand]
+int kpToolAirSprayCommand::size () const
+{
+    return kpPixmapFX::pixmapSize (m_newPixmapPtr) +
+           kpPixmapFX::pixmapSize (m_oldPixmap);
+}
+
+
+// Redo:
+//
+// must not call before unexecute() as m_newPixmapPtr is null
+// (one reason why we told addCommand() not to execute,
+//  the other being that the dots have already been draw onto the doc)
+void kpToolAirSprayCommand::execute ()
+{
+    if (m_newPixmapPtr)
+    {
+        document ()->setPixmapAt (*m_newPixmapPtr, m_boundingRect.topLeft ());
+
+        // (will be regenerated in unexecute() if required)
+        delete m_newPixmapPtr;
+        m_newPixmapPtr = 0;
+    }
+    else
+        kdError () << "kpToolAirSprayCommand::execute() has null m_newPixmapPtr" << endl;
+}
+
+// Undo:
+void kpToolAirSprayCommand::unexecute ()
+{
+    if (!m_newPixmapPtr)
+    {
+        // the ultimate in laziness - figure out Redo info only if we Undo
+        m_newPixmapPtr = new QPixmap (m_boundingRect.width (), m_boundingRect.height ());
+        *m_newPixmapPtr = document ()->getPixmapAt (m_boundingRect);
+    }
+    else
+        kdError () << "kpToolAirSprayCommand::unexecute() has non-null newPixmapPtr" << endl;
+
+    document ()->setPixmapAt (m_oldPixmap, m_boundingRect.topLeft ());
+}
+
+
+// public
+void kpToolAirSprayCommand::addPoints (const QPointArray &points)
+{
+    QRect docRect = points.boundingRect ();
+
+#if DEBUG_KP_TOOL_SPRAYCAN
+    kdDebug () << "kpToolAirSprayCommand::addPoints() docRect=" << docRect
+               << " numPoints=" << points.count () << endl;
+    for (int i = 0; i < (int) points.count (); i++)
+        kdDebug () << "\t" << i << ": " << points [i] << endl;
+#endif
+
+    QPixmap pixmap = document ()->getPixmapAt (docRect);
+    QBitmap mask;
+
+    QPainter painter, maskPainter;
+
+    if (m_color.isOpaque ())
+    {
+        painter.begin (&pixmap);
+        painter.setPen (m_color.toQColor ());
+    }
+
+    if (pixmap.mask () || m_color.isTransparent ())
+    {
+        mask = kpPixmapFX::getNonNullMask (pixmap);
+        maskPainter.begin (&mask);
+        maskPainter.setPen (m_color.maskColor ());
+    }
+
+    for (int i = 0; i < (int) points.count (); i++)
+    {
+        QPoint pt (points [i].x () - docRect.x (),
+                   points [i].y () - docRect.y ());
+
+        if (painter.isActive ())
+            painter.drawPoint (pt);
+
+        if (maskPainter.isActive ())
+            maskPainter.drawPoint (pt);
+    }
+
+    if (maskPainter.isActive ())
+        maskPainter.end ();
+
+    if (painter.isActive ())
+        painter.end ();
+
+    if (!mask.isNull ())
+        pixmap.setMask (mask);
+
+    viewManager ()->setFastUpdates ();
+    document ()->setPixmapAt (pixmap, docRect.topLeft ());
+    viewManager ()->restoreFastUpdates ();
+
+    m_boundingRect = m_boundingRect.unite (docRect);
+}
+
+void kpToolAirSprayCommand::finalize ()
+{
+    // store only needed part of doc pixmap
+    m_oldPixmap = kpTool::neededPixmap (m_oldPixmap, m_boundingRect);
+}
+
+void kpToolAirSprayCommand::cancel ()
+{
+    if (m_boundingRect.isValid ())
+    {
+        viewManager ()->setFastUpdates ();
+        document ()->setPixmapAt (m_oldPixmap, m_boundingRect.topLeft ());
+        viewManager ()->restoreFastUpdates ();
+    }
+}
+
+#include <kptoolairspray.moc>