kivio

addstenciltool.cpp

00001 /*
00002  * Kivio - Visual Modelling and Flowcharting
00003  * Copyright (C) 2005 Peter Simonsson <psn@linux.se>
00004  *
00005  * This program is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU General Public License
00007  * as published by the Free Software Foundation; either version 2
00008  * of the License, or (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful,
00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013  * GNU General Public License for more details.
00014  *
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software
00017  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
00018  */
00019 #include "addstenciltool.h"
00020 
00021 #include <qevent.h>
00022 #include <qcursor.h>
00023 
00024 #include "kdebug.h"
00025 
00026 #include "kivio_canvas.h"
00027 #include "kivio_stencil_spawner.h"
00028 #include "kivio_stencil.h"
00029 #include "kivio_page.h"
00030 #include "kivio_doc.h"
00031 #include "kivio_pluginmanager.h"
00032 
00033 namespace Kivio {
00034 
00035 AddStencilTool::AddStencilTool(KivioView* parent)
00036  : MouseTool(parent, "Add Stencil Mouse Tool")
00037 {
00038   m_leftMouseButtonPressed = false;
00039   m_stencil = 0;
00040   m_spawner = 0;
00041 }
00042 
00043 AddStencilTool::~AddStencilTool()
00044 {
00045   delete m_stencil;
00046   m_stencil = 0;
00047 }
00048 
00049 bool AddStencilTool::processEvent(QEvent* e)
00050 {
00051   switch(e->type()) {
00052     case QEvent::MouseButtonPress:
00053     {
00054       QMouseEvent* me = static_cast<QMouseEvent*>(e);
00055 
00056       if(me->button() == LeftButton) {
00057         m_leftMouseButtonPressed = true;
00058         createStencil(me->pos());
00059         return true;
00060       }
00061 
00062       break;
00063     }
00064     case QEvent::MouseButtonRelease:
00065     {
00066       QMouseEvent* me = static_cast<QMouseEvent*>(e);
00067 
00068       if(m_leftMouseButtonPressed && (me->button() == LeftButton)) {
00069         m_leftMouseButtonPressed = false;
00070         endOperation(me->pos());
00071         return true;
00072       }
00073 
00074       break;
00075     }
00076     case QEvent::MouseMove:
00077     {
00078       QMouseEvent* me = static_cast<QMouseEvent*>(e);
00079 
00080       if(m_leftMouseButtonPressed) {
00081         resize(me->pos());
00082         return true;
00083       }
00084 
00085       break;
00086     }
00087     default:
00088       break;
00089   }
00090 
00091   return false;
00092 }
00093 
00094 void AddStencilTool::setActivated(bool a)
00095 {
00096   if(a) {
00097     m_leftMouseButtonPressed = false;
00098     view()->canvasWidget()->setCursor(Qt::CrossCursor);
00099     emit activated(this);
00100   } else {
00101     view()->canvasWidget()->unsetCursor();
00102     m_spawner = 0;
00103     delete m_stencil;
00104     m_stencil = 0;
00105   }
00106 }
00107 
00108 void AddStencilTool::activateNewStencil(KivioStencilSpawner* spawner)
00109 {
00110   m_spawner = spawner;
00111   setActivated(true);
00112 }
00113 
00114 void AddStencilTool::createStencil(const QPoint& position)
00115 {
00116   if(!m_spawner) {
00117     return;
00118   }
00119 
00120   m_startPoint = view()->canvasWidget()->mapFromScreen(position);
00121   m_startPoint = view()->canvasWidget()->snapToGridAndGuides(m_startPoint);
00122 
00123   m_stencil = m_spawner->newStencil();
00124 
00125   if(!m_stencil) {
00126     return;
00127   }
00128 
00129   m_stencil->setPosition(m_startPoint.x(), m_startPoint.y());
00130   m_originalSize.setWidth(m_stencil->w());
00131   m_originalSize.setHeight(m_stencil->h());
00132   m_stencil->setW(1);
00133   m_stencil->setH(1);
00134   view()->canvasWidget()->beginUnclippedSpawnerPainter();
00135   view()->canvasWidget()->drawStencilXOR(m_stencil);
00136 }
00137 
00138 void AddStencilTool::endOperation(const QPoint& position)
00139 {
00140   if(!m_stencil) {
00141     return;
00142   }
00143 
00144   KoPoint endPoint = view()->canvasWidget()->mapFromScreen(position);
00145   endPoint = view()->canvasWidget()->snapToGridAndGuides(endPoint);
00146 
00147   if(m_startPoint == endPoint) {
00148     m_stencil->setW(m_originalSize.width());
00149     m_stencil->setH(m_originalSize.height());
00150   }
00151 
00152   KivioPage* page = view()->canvasWidget()->activePage();
00153   page->unselectAllStencils();
00154   page->addStencil(m_stencil);
00155   page->selectStencil(m_stencil);
00156   m_stencil = 0;
00157 
00158   view()->canvasWidget()->endUnclippedSpawnerPainter();
00159   view()->doc()->updateView(page);
00160 
00161   view()->pluginManager()->activateDefaultTool();
00162 }
00163 
00164 void AddStencilTool::resize(const QPoint& position)
00165 {
00166   KoPoint endPoint = view()->canvasWidget()->mapFromScreen(position);
00167   endPoint = view()->canvasWidget()->snapToGridAndGuides(endPoint);
00168 
00169   view()->canvasWidget()->drawStencilXOR(m_stencil);
00170   m_stencil->setW(endPoint.x() - m_startPoint.x());
00171   m_stencil->setH(endPoint.y() - m_startPoint.y());
00172   view()->canvasWidget()->drawStencilXOR(m_stencil);
00173 }
00174 
00175 }
00176 
00177 #include "addstenciltool.moc"
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