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koffice/kivio/kiviopart/addstenciltool.cpp

178 lines
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/*
* Kivio - Visual Modelling and Flowcharting
* Copyright (C) 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 "addstenciltool.h"
#include <qevent.h>
#include <qcursor.h>
#include "kdebug.h"
#include "kivio_canvas.h"
#include "kivio_stencil_spawner.h"
#include "kivio_stencil.h"
#include "kivio_page.h"
#include "kivio_doc.h"
#include "kivio_pluginmanager.h"
namespace Kivio {
AddStencilTool::AddStencilTool(KivioView* parent)
: MouseTool(parent, "Add Stencil Mouse Tool")
{
m_leftMouseButtonPressed = false;
m_stencil = 0;
m_spawner = 0;
}
AddStencilTool::~AddStencilTool()
{
delete m_stencil;
m_stencil = 0;
}
bool AddStencilTool::processEvent(QEvent* e)
{
switch(e->type()) {
case QEvent::MouseButtonPress:
{
QMouseEvent* me = static_cast<QMouseEvent*>(e);
if(me->button() == LeftButton) {
m_leftMouseButtonPressed = true;
createStencil(me->pos());
return true;
}
break;
}
case QEvent::MouseButtonRelease:
{
QMouseEvent* me = static_cast<QMouseEvent*>(e);
if(m_leftMouseButtonPressed && (me->button() == LeftButton)) {
m_leftMouseButtonPressed = false;
endOperation(me->pos());
return true;
}
break;
}
case QEvent::MouseMove:
{
QMouseEvent* me = static_cast<QMouseEvent*>(e);
if(m_leftMouseButtonPressed) {
resize(me->pos());
return true;
}
break;
}
default:
break;
}
return false;
}
void AddStencilTool::setActivated(bool a)
{
if(a) {
m_leftMouseButtonPressed = false;
view()->canvasWidget()->setCursor(Qt::CrossCursor);
emit activated(this);
} else {
view()->canvasWidget()->unsetCursor();
m_spawner = 0;
delete m_stencil;
m_stencil = 0;
}
}
void AddStencilTool::activateNewStencil(KivioStencilSpawner* spawner)
{
m_spawner = spawner;
setActivated(true);
}
void AddStencilTool::createStencil(const QPoint& position)
{
if(!m_spawner) {
return;
}
m_startPoint = view()->canvasWidget()->mapFromScreen(position);
m_startPoint = view()->canvasWidget()->snapToGridAndGuides(m_startPoint);
m_stencil = m_spawner->newStencil();
if(!m_stencil) {
return;
}
m_stencil->setPosition(m_startPoint.x(), m_startPoint.y());
m_originalSize.setWidth(m_stencil->w());
m_originalSize.setHeight(m_stencil->h());
m_stencil->setW(1);
m_stencil->setH(1);
view()->canvasWidget()->beginUnclippedSpawnerPainter();
view()->canvasWidget()->drawStencilXOR(m_stencil);
}
void AddStencilTool::endOperation(const QPoint& position)
{
if(!m_stencil) {
return;
}
KoPoint endPoint = view()->canvasWidget()->mapFromScreen(position);
endPoint = view()->canvasWidget()->snapToGridAndGuides(endPoint);
if(m_startPoint == endPoint) {
m_stencil->setW(m_originalSize.width());
m_stencil->setH(m_originalSize.height());
}
KivioPage* page = view()->canvasWidget()->activePage();
page->unselectAllStencils();
page->addStencil(m_stencil);
page->selectStencil(m_stencil);
m_stencil = 0;
view()->canvasWidget()->endUnclippedSpawnerPainter();
view()->doc()->updateView(page);
view()->pluginManager()->activateDefaultTool();
}
void AddStencilTool::resize(const QPoint& position)
{
KoPoint endPoint = view()->canvasWidget()->mapFromScreen(position);
endPoint = view()->canvasWidget()->snapToGridAndGuides(endPoint);
view()->canvasWidget()->drawStencilXOR(m_stencil);
m_stencil->setW(endPoint.x() - m_startPoint.x());
m_stencil->setH(endPoint.y() - m_startPoint.y());
view()->canvasWidget()->drawStencilXOR(m_stencil);
}
}
#include "addstenciltool.moc"