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koffice/kivio/plugins/kivioconnectortool/tool_connector.cpp

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/*
* Kivio - Visual Modelling and Flowcharting
* Copyright (C) 2000-2001 theKompany.com & Dave Marotti
* Copyright (C) 2003-2005 Peter Simonsson <psn@linux.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "tool_connector.h"
#include <tqcursor.h>
#include <kdebug.h>
#include <kiconloader.h>
#include <kstandarddirs.h>
#include <KoPoint.h>
#include <KoZoomHandler.h>
#include <klocale.h>
#include <KoGuides.h>
#include "kivio_view.h"
#include "kivio_canvas.h"
#include "kivio_page.h"
#include "kivio_doc.h"
#include "kivio_factory.h"
#include "kivio_stencil_spawner_set.h"
#include "kivio_stencil_spawner.h"
#include "kivio_custom_drag_data.h"
#include "kivio_layer.h"
#include "kivio_point.h"
#include "kivio_stencil.h"
#include "straight_connector.h"
#include "kivio_pluginmanager.h"
#include "kivio_1d_stencil.h"
#include "kiviopolylineconnector.h"
#include "polylineconnectorspawner.h"
#include "mousetoolaction.h"
ConnectorTool::ConnectorTool( KivioView* parent ) : Kivio::MouseTool(parent, "Connector Mouse Tool")
{
m_connectorAction = new Kivio::MouseToolAction(i18n("Straight Connector"), "kivio_connector", 0,
actionCollection(), "connector");
connect(m_connectorAction, TQT_SIGNAL(toggled(bool)), this, TQT_SLOT(setActivated(bool)));
connect(m_connectorAction, TQT_SIGNAL(activated()), this, TQT_SLOT(activateStraight()));
connect(m_connectorAction, TQT_SIGNAL(doubleClicked()), this, TQT_SLOT(makePermanent()));
m_connectorAction->setExclusiveGroup("ConnectorTool");
m_polyLineAction = new Kivio::MouseToolAction(i18n("Polyline Connector"), "kivio_connector", 0,
actionCollection(), "polyLineConnector");
connect(m_polyLineAction, TQT_SIGNAL(toggled(bool)), this, TQT_SLOT(setActivated(bool)));
connect(m_polyLineAction, TQT_SIGNAL(activated()), this, TQT_SLOT(activatePolyline()));
connect(m_connectorAction, TQT_SIGNAL(doubleClicked()), this, TQT_SLOT(makePermanent()));
m_polyLineAction->setExclusiveGroup("ConnectorTool");
m_permanent = false;
m_type = StraightConnector;
m_mode = stmNone;
m_pDragData = 0;
m_pConnectorCursor1 = new TQCursor(BarIcon("kivio_connector_cursor1",KivioFactory::global()),2,2);
m_pConnectorCursor2 = new TQCursor(BarIcon("kivio_connector_cursor2",KivioFactory::global()),2,2);
}
ConnectorTool::~ConnectorTool()
{
delete m_pConnectorCursor1;
delete m_pConnectorCursor2;
delete m_pDragData;
m_pDragData = 0;
}
/**
* Event delegation
*
* @param e The event to be identified and processed
*
*/
bool ConnectorTool::processEvent(TQEvent* e)
{
switch (e->type())
{
case TQEvent::MouseButtonPress:
mousePress( TQT_TQMOUSEEVENT(e) );
return true;
break;
case TQEvent::MouseButtonRelease:
mouseRelease( TQT_TQMOUSEEVENT(e) );
return true;
break;
case TQEvent::MouseMove:
mouseMove( TQT_TQMOUSEEVENT(e) );
return true;
break;
default:
break;
}
return false;
}
void ConnectorTool::setActivated(bool a)
{
if(a) {
view()->canvasWidget()->setCursor(*m_pConnectorCursor1);
m_mode = stmNone;
m_pStencil = 0;
m_pDragData = 0;
view()->canvasWidget()->setShowConnectorTargets(true);
view()->canvasWidget()->repaint();
emit activated(this);
} else {
if(m_pStencil && (m_mode == stmDrawRubber) && (m_type == PolyLineConnector)) {
Kivio::PolyLineConnector* polyconnector = static_cast<Kivio::PolyLineConnector*>(m_pStencil);
polyconnector->removeLastPoint();
if(polyconnector->pointCount() > 1) {
connector(view()->canvasWidget()->rect());
} else {
view()->activePage()->unselectStencil(polyconnector);
view()->activePage()->curLayer()->takeStencil(polyconnector);
delete polyconnector;
polyconnector = 0;
}
view()->canvasWidget()->guideLines().repaintAfterSnapping();
}
m_pStencil = 0;
delete m_pDragData;
m_pDragData = 0;
m_type = StraightConnector;
m_connectorAction->setChecked(false);
m_polyLineAction->setChecked(false);
m_permanent = false;
view()->setStatusBarInfo("");
view()->canvasWidget()->setShowConnectorTargets(false);
view()->canvasWidget()->repaint();
}
}
void ConnectorTool::connector(TQRect)
{
if (!m_pStencil)
return;
delete m_pDragData;
m_pDragData = 0;
KivioDoc* doc = view()->doc();
KivioPage* page = view()->activePage();
m_pStencil->searchForConnections(page, view()->zoomHandler()->unzoomItY(4));
doc->updateView(page);
}
void ConnectorTool::mousePress( TQMouseEvent *e )
{
if(e->button() == Qt::LeftButton) {
bool ok = true;
if(!m_pStencil || (m_type == StraightConnector)) {
ok = startRubberBanding(e);
} else {
if(m_pStencil) {
Kivio::PolyLineConnector* connector = static_cast<Kivio::PolyLineConnector*>(m_pStencil);
KivioCanvas* canvas = view()->canvasWidget();
KivioPage* pPage = canvas->activePage();
bool hit = false;
KoPoint point = pPage->snapToTarget(canvas->mapFromScreen(e->pos()), 8.0, hit);
if(!hit) {
point = canvas->snapToGrid(startPoint);
}
if((m_mode == stmDrawRubber) && hit) {
endRubberBanding(e);
} else {
connector->addPoint(point);
}
}
}
if(ok) {
m_mode = stmDrawRubber;
} else {
m_mode = stmNone;
}
} else if(e->button() == Qt::RightButton) {
if(m_type == PolyLineConnector) {
if(m_mode == stmDrawRubber) {
endRubberBanding(e);
}
view()->canvasWidget()->setCursor(*m_pConnectorCursor1);
m_mode = stmNone;
}
}
}
/**
* Tests if we should start rubber banding (always returns true).
*/
bool ConnectorTool::startRubberBanding( TQMouseEvent *e )
{
KivioCanvas* canvas = view()->canvasWidget();
KivioDoc* doc = view()->doc();
KivioPage* pPage = canvas->activePage();
TQString spawnerId;
if(m_type == StraightConnector) {
spawnerId = "Dave Marotti - Straight Connector";
} else {
spawnerId = "Internal - PolyLine Connector";
}
KivioStencilSpawner* ss = doc->findInternalStencilSpawner(spawnerId);
if(!ss) {
kdDebug(43000) << "ConnectorTool: Failed to find StencilSpawner!" << endl;
return false;
}
// Create the stencil
m_pStencil = static_cast<Kivio1DStencil*>(ss->newStencil());
bool hit = false;
startPoint = pPage->snapToTarget(canvas->mapFromScreen(e->pos()), 8.0, hit);
if(!hit) {
startPoint = canvas->snapToGrid(startPoint);
}
if(!m_pStencil) {
return false;
}
m_pStencil->setTextFont(doc->defaultFont());
// Unselect everything, add the stencil to the page, and select it
pPage->unselectAllStencils();
pPage->addStencil(m_pStencil);
pPage->selectStencil(m_pStencil);
// Get drag info ready
m_pDragData = new KivioCustomDragData();
m_pDragData->page = pPage;
m_pDragData->x = startPoint.x();
m_pDragData->y = startPoint.y();
if(m_type == StraightConnector) {
KivioStraightConnector* connector = static_cast<KivioStraightConnector*>(m_pStencil);
m_pDragData->id = kctCustom + 2;
connector->setStartPoint(startPoint.x(), startPoint.y());
connector->setEndPoint(startPoint.x() + 10.0, startPoint.y() + 10.0);
} else {
Kivio::PolyLineConnector* connector = static_cast<Kivio::PolyLineConnector*>(m_pStencil);
m_pDragData->id = kctCustom + 1;
connector->addPoint(startPoint);
connector->addPoint(startPoint);
}
m_pStencil->customDrag(m_pDragData);
canvas->repaint();
canvas->setCursor(*m_pConnectorCursor2);
return true;
}
void ConnectorTool::mouseMove( TQMouseEvent * e )
{
switch( m_mode )
{
case stmDrawRubber:
continueRubberBanding(e);
break;
default:
break;
}
}
void ConnectorTool::continueRubberBanding( TQMouseEvent *e )
{
KivioCanvas* canvas = view()->canvasWidget();
KivioPage* pPage = view()->activePage();
bool hit = false;
KoPoint endPoint = pPage->snapToTarget(canvas->mapFromScreen(e->pos()), 8.0, hit);
if(!hit) {
endPoint = canvas->snapToGridAndGuides(endPoint);
}
m_pDragData->x = endPoint.x();
m_pDragData->y = endPoint.y();
if(m_type == StraightConnector) {
KivioStraightConnector* connector = static_cast<KivioStraightConnector*>(m_pStencil);
connector->setEndPoint(endPoint.x(), endPoint.y());
m_pDragData->id = kctCustom + 2;
} else {
Kivio::PolyLineConnector* connector = static_cast<Kivio::PolyLineConnector*>(m_pStencil);
m_pDragData->id = kctCustom + connector->pointCount();
}
m_pStencil->customDrag(m_pDragData);
m_pStencil->updateGeometry();
canvas->repaint();
}
void ConnectorTool::mouseRelease( TQMouseEvent *e )
{
if(m_type == StraightConnector) {
switch( m_mode )
{
case stmDrawRubber:
endRubberBanding(e);
break;
}
view()->canvasWidget()->setCursor(*m_pConnectorCursor1);
m_mode = stmNone;
}
}
void ConnectorTool::endRubberBanding(TQMouseEvent *)
{
connector(view()->canvasWidget()->rect());
m_pStencil = 0;
m_mode = stmNone;
view()->canvasWidget()->guideLines().repaintAfterSnapping();
if(!m_permanent) {
view()->pluginManager()->activateDefaultTool();
}
}
void ConnectorTool::activateStraight()
{
m_type = StraightConnector;
m_connectorAction->setChecked(true);
m_polyLineAction->setChecked(false);
}
void ConnectorTool::activatePolyline()
{
m_type = PolyLineConnector;
m_connectorAction->setChecked(false);
m_polyLineAction->setChecked(true);
view()->setStatusBarInfo(i18n("Left mouse button to start drawing, right to end drawing."));
}
void ConnectorTool::makePermanent()
{
m_permanent = true;
}
#include "tool_connector.moc"