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koffice/krita/plugins/tools/tool_perspectivegrid/kis_tool_perspectivegrid.cc

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/*
* kis_tool_perspectivegrid.cc - part of Krita
*
* Copyright (c) 2006 Cyrille Berger <cberger@cberger.net>
*
* 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 <kis_tool_perspectivegrid.h>
#include <qapplication.h>
#include <qpainter.h>
#include <qregion.h>
#include <qwidget.h>
#include <qlayout.h>
#include <kaction.h>
#include <kdebug.h>
#include <kcommand.h>
#include <klocale.h>
#include <kis_button_press_event.h>
#include <kis_button_release_event.h>
#include <kis_canvas_controller.h>
#include <kis_canvas_painter.h>
#include <kis_canvas_subject.h>
#include <kis_cursor.h>
#include <kis_image.h>
#include <kis_move_event.h>
#include <kis_perspective_grid_manager.h>
#include <kis_selected_transaction.h>
#include <kis_painter.h>
#include <kis_paintop_registry.h>
#include <kis_vec.h>
#include <kis_canvas.h>
KisToolPerspectiveGrid::KisToolPerspectiveGrid()
: super(i18n("Perspective Grid")), m_handleSize(13), m_handleHalfSize(6)
{
setName("tool_perspectivegrid");
m_subject = 0;
m_dragging = false;
}
KisToolPerspectiveGrid::~KisToolPerspectiveGrid()
{
}
void KisToolPerspectiveGrid::activate()
{
m_subject->perspectiveGridManager()->startEdition();
if( ! m_subject->currentImg()->perspectiveGrid()->hasSubGrids() )
{
m_mode = MODE_CREATION;
m_points.clear();
} else {
m_mode = MODE_EDITING;
drawGrid();
}
super::activate();
}
void KisToolPerspectiveGrid::deactivate()
{
m_subject->perspectiveGridManager()->stopEdition();
m_subject->perspectiveGridManager()->setGridVisible( true);
if( m_mode == MODE_CREATION )
{
drawGridCreation();
m_points.clear();
m_dragging = false;
} else {
drawGrid();
}
}
void KisToolPerspectiveGrid::update (KisCanvasSubject *subject)
{
m_subject = subject;
super::update(m_subject);
}
bool KisToolPerspectiveGrid::mouseNear(const QPoint& mousep, const QPoint point)
{
return (QRect( (point.x() - m_handleHalfSize), (point.y() - m_handleHalfSize), m_handleSize, m_handleSize).contains(mousep) );
}
void KisToolPerspectiveGrid::buttonPress(KisButtonPressEvent *event)
{
KisPerspectiveGrid* pGrid = m_subject->currentImg()->perspectiveGrid();
if(!pGrid->hasSubGrids() && m_mode != MODE_CREATION)
{ // it's possible that the perspectiv grid was cleared
m_mode = MODE_CREATION;
m_points.clear();
}
if( m_mode == MODE_CREATION && event->button() == LeftButton)
{
m_dragging = true;
if (m_points.isEmpty())
{
m_dragStart = event->pos();
m_dragEnd = event->pos();
m_points.append(m_dragStart);
} else {
m_dragStart = m_dragEnd;
m_dragEnd = event->pos();
drawGridCreation();
}
} else if(m_mode == MODE_EDITING && event->button() == LeftButton){
// Look for the handle which was pressed
if (!m_subject)
return;
KisCanvasController *controller = m_subject->canvasController();
Q_ASSERT(controller);
QPoint mousep = controller->windowToView( event->pos().roundQPoint() );
for( QValueList<KisSubPerspectiveGrid*>::const_iterator it = pGrid->begin(); it != pGrid->end(); ++it)
{
KisSubPerspectiveGrid* grid = *it;
if( mouseNear( mousep, controller->windowToView(grid->topLeft()->roundQPoint() ) ) )
{
kdDebug() << " PRESS TOPLEFT HANDLE " << endl;
m_mode = MODE_DRAGING_NODE;
m_selectedNode1 = grid->topLeft();
break;
}
else if( mouseNear( mousep, controller->windowToView(grid->topRight()->roundQPoint() ) ) )
{
kdDebug() << " PRESS TOPRIGHT HANDLE " << endl;
m_mode = MODE_DRAGING_NODE;
m_selectedNode1 = grid->topRight();
break;
}
else if( mouseNear( mousep, controller->windowToView(grid->bottomLeft()->roundQPoint() ) ) )
{
kdDebug() << " PRESS BOTTOMLEFT HANDLE " << endl;
m_mode = MODE_DRAGING_NODE;
m_selectedNode1 = grid->bottomLeft();
break;
}
else if( mouseNear( mousep, controller->windowToView(grid->bottomRight()->roundQPoint() ) ) )
{
kdDebug() << " PRESS BOTTOMRIGHT HANDLE " << endl;
m_mode = MODE_DRAGING_NODE;
m_selectedNode1 = grid->bottomRight();
break;
}
else if( !grid->leftGrid() && mouseNear( mousep, controller->windowToView( ((*grid->topLeft() + *grid->bottomLeft() )*0.5) ).roundQPoint() ) )
{
kdDebug() << " PRESS LEFT HANDLE " << endl;
m_mode = MODE_DRAGING_TRANSLATING_TWONODES;
drawGrid();
m_selectedNode1 = new KisPerspectiveGridNode( *grid->topLeft() );
m_selectedNode2 = new KisPerspectiveGridNode( *grid->bottomLeft() );
KisSubPerspectiveGrid* newsubgrid = new KisSubPerspectiveGrid( m_selectedNode1, grid->topLeft() , grid->bottomLeft(), m_selectedNode2);
m_dragEnd = event->pos();
newsubgrid->setRightGrid( grid);
grid->setLeftGrid( newsubgrid);
pGrid->addNewSubGrid( newsubgrid);
drawGrid();
break;
}
else if( !grid->rightGrid() && mouseNear( mousep, controller->windowToView( ((*grid->topRight() + *grid->bottomRight() )*0.5) ).roundQPoint() ) )
{
kdDebug() << " PRESS RIGHT HANDLE " << endl;
m_mode = MODE_DRAGING_TRANSLATING_TWONODES;
drawGrid();
m_selectedNode1 = new KisPerspectiveGridNode( *grid->topRight() );
m_selectedNode2 = new KisPerspectiveGridNode( *grid->bottomRight() );
KisSubPerspectiveGrid* newsubgrid = new KisSubPerspectiveGrid( grid->topRight(), m_selectedNode1, m_selectedNode2, grid->bottomRight());
m_dragEnd = event->pos();
newsubgrid->setLeftGrid( grid);
grid->setRightGrid( newsubgrid);
pGrid->addNewSubGrid( newsubgrid);
drawGrid();
break;
}
else if( !grid->topGrid() && mouseNear( mousep, controller->windowToView( ((*grid->topLeft() + *grid->topRight() )*0.5) ).roundQPoint() ) )
{
kdDebug() << " PRESS TOP HANDLE " << endl;
m_mode = MODE_DRAGING_TRANSLATING_TWONODES;
drawGrid();
m_selectedNode1 = new KisPerspectiveGridNode( *grid->topLeft() );
m_selectedNode2 = new KisPerspectiveGridNode( *grid->topRight() );
KisSubPerspectiveGrid* newsubgrid = new KisSubPerspectiveGrid( m_selectedNode1, m_selectedNode2, grid->topRight(), grid->topLeft() );
m_dragEnd = event->pos();
newsubgrid->setBottomGrid( grid);
grid->setTopGrid( newsubgrid);
pGrid->addNewSubGrid( newsubgrid);
drawGrid();
break;
}
else if( !grid->bottomGrid() && mouseNear( mousep, controller->windowToView( ((*grid->bottomLeft() + *grid->bottomRight() )*0.5) ).roundQPoint() ) )
{
kdDebug() << " PRESS BOTTOM HANDLE " << endl;
m_mode = MODE_DRAGING_TRANSLATING_TWONODES;
drawGrid();
m_selectedNode1 = new KisPerspectiveGridNode( *grid->bottomLeft() );
m_selectedNode2 = new KisPerspectiveGridNode( *grid->bottomRight() );
KisSubPerspectiveGrid* newsubgrid = new KisSubPerspectiveGrid( grid->bottomLeft(), grid->bottomRight(), m_selectedNode2, m_selectedNode1);
m_dragEnd = event->pos();
newsubgrid->setTopGrid( grid);
grid->setBottomGrid( newsubgrid);
pGrid->addNewSubGrid( newsubgrid);
drawGrid();
break;
}
}
}
}
void KisToolPerspectiveGrid::move(KisMoveEvent *event)
{
if( m_mode == MODE_CREATION )
{
if (m_dragging) {
// erase old lines on canvas
drawGridCreation();
// get current mouse position
m_dragEnd = event->pos();
// draw new lines on canvas
drawGridCreation();
}
} else {
if( m_mode == MODE_DRAGING_NODE)
{
drawGrid();
m_selectedNode1->setX( event->pos().x() );
m_selectedNode1->setY( event->pos().y() );
drawGrid();
}
if( m_mode == MODE_DRAGING_TRANSLATING_TWONODES)
{
drawGrid();
KisPoint translate = event->pos() - m_dragEnd;
m_dragEnd = event->pos();
*m_selectedNode1 += translate;;
*m_selectedNode2 += translate;;
drawGrid();
}
}
}
void KisToolPerspectiveGrid::buttonRelease(KisButtonReleaseEvent *event)
{
if (!m_subject)
return;
if( m_mode == MODE_CREATION )
{
if (m_dragging && event->button() == LeftButton) {
m_dragging = false;
m_points.append (m_dragEnd);
if( m_points.size() == 4)
{ // wow we have a grid, isn't that cool ?
drawGridCreation(); // Clean
m_subject->currentImg()->perspectiveGrid()->addNewSubGrid( new KisSubPerspectiveGrid( new KisPerspectiveGridNode(m_points[0]), new KisPerspectiveGridNode(m_points[1]), new KisPerspectiveGridNode(m_points[2]), new KisPerspectiveGridNode(m_points[3]) ) );
drawGrid();
m_mode = MODE_EDITING;
}
}
} else {
m_mode = MODE_EDITING;
m_selectedNode1 = 0;
m_selectedNode2 = 0;
}
/* if (m_dragging && event->button() == RightButton) {
}*/
}
void KisToolPerspectiveGrid::paint(KisCanvasPainter& gc)
{
if( m_mode == MODE_CREATION )
{
drawGridCreation(gc);
} else {
drawGrid(gc);
}
}
void KisToolPerspectiveGrid::paint(KisCanvasPainter& gc, const QRect&)
{
if( m_mode == MODE_CREATION )
{
drawGridCreation(gc);
} else {
drawGrid(gc);
}
}
void KisToolPerspectiveGrid::drawGridCreation()
{
if (m_subject) {
KisCanvasController *controller = m_subject->canvasController();
KisCanvas *canvas = controller->kiscanvas();
KisCanvasPainter gc(canvas);
drawGridCreation(gc);
}
}
void KisToolPerspectiveGrid::drawGridCreation(KisCanvasPainter& gc)
{
if (!m_subject)
return;
QPen pen(Qt::white);
gc.setPen(pen);
gc.setRasterOp(Qt::XorROP);
KisCanvasController *controller = m_subject->canvasController();
KisPoint start, end;
QPoint startPos;
QPoint endPos;
if (m_dragging) {
startPos = controller->windowToView(m_dragStart.floorQPoint());
endPos = controller->windowToView(m_dragEnd.floorQPoint());
gc.drawLine(startPos, endPos);
} else {
for (KisPointVector::iterator it = m_points.begin(); it != m_points.end(); ++it) {
if (it == m_points.begin())
{
start = (*it);
} else {
end = (*it);
startPos = controller->windowToView(start.floorQPoint());
endPos = controller->windowToView(end.floorQPoint());
gc.drawLine(startPos, endPos);
start = end;
}
}
}
}
void KisToolPerspectiveGrid::drawSmallRectangle(KisCanvasPainter& gc, QPoint p)
{
gc.drawRect( p.x() - m_handleHalfSize - 1, p.y() - m_handleHalfSize - 1, m_handleSize, m_handleSize);
}
void KisToolPerspectiveGrid::drawGrid(KisCanvasPainter& gc)
{
if (!m_subject)
return;
KisCanvasController *controller = m_subject->canvasController();
QPen pen(Qt::white);
QPoint startPos;
QPoint endPos;
gc.setPen(pen);
gc.setRasterOp(Qt::XorROP);
KisPerspectiveGrid* pGrid = m_subject->currentImg()->perspectiveGrid();
for( QValueList<KisSubPerspectiveGrid*>::const_iterator it = pGrid->begin(); it != pGrid->end(); ++it)
{
KisSubPerspectiveGrid* grid = *it;
int index = grid->index();
bool drawLeft = !(grid->leftGrid() && (index > grid->leftGrid()->index() ) );
bool drawRight = !(grid->rightGrid() && (index > grid->rightGrid()->index() ) );
bool drawTop = !(grid->topGrid() && (index > grid->topGrid()->index() ) );
bool drawBottom = !(grid->bottomGrid() && (index > grid->bottomGrid()->index() ) );
if(drawTop) {
startPos = controller->windowToView(grid->topLeft()->roundQPoint());
endPos = controller->windowToView(grid->topRight()->roundQPoint());
gc.drawLine( startPos, endPos );
if( !grid->topGrid() )
{
drawSmallRectangle(gc, (endPos + startPos) / 2);
}
if(drawLeft) {
drawSmallRectangle(gc, startPos);
}
if(drawRight) {
drawSmallRectangle(gc, endPos);
}
}
if(drawRight) {
startPos = controller->windowToView(grid->topRight()->roundQPoint());
endPos = controller->windowToView(grid->bottomRight()->roundQPoint());
gc.drawLine( startPos, endPos );
if( !grid->rightGrid() )
{
drawSmallRectangle(gc, (endPos + startPos) / 2);
}
}
if(drawBottom) {
startPos = controller->windowToView(grid->bottomRight()->roundQPoint());
endPos = controller->windowToView(grid->bottomLeft()->roundQPoint());
gc.drawLine( startPos, endPos );
if( !grid->bottomGrid() )
{
drawSmallRectangle(gc, (endPos + startPos) / 2);
}
if(drawLeft) {
drawSmallRectangle(gc, endPos);
}
if(drawRight) {
drawSmallRectangle(gc, startPos);
}
}
if(drawLeft) {
startPos = controller->windowToView(grid->bottomLeft()->roundQPoint());
endPos = controller->windowToView(grid->topLeft()->roundQPoint());
gc.drawLine( startPos, endPos );
if( !grid->leftGrid() )
{
drawSmallRectangle(gc, (endPos + startPos) / 2);
}
}
KisPoint tbVpf = grid->topBottomVanishingPoint();
if( fabs(tbVpf.x()) < 30000000. && fabs(tbVpf.y()) < 30000000.)
{
QPoint tbVp = controller->windowToView(tbVpf.roundQPoint());
gc.drawLine( tbVp.x() - m_handleHalfSize, tbVp.y() - m_handleHalfSize, tbVp.x() + m_handleHalfSize, tbVp.y() + m_handleHalfSize);
gc.drawLine( tbVp.x() - m_handleHalfSize, tbVp.y() + m_handleHalfSize, tbVp.x() + m_handleHalfSize, tbVp.y() - m_handleHalfSize);
}
KisPoint lrVpf = grid->leftRightVanishingPoint();
if( fabs(lrVpf.x()) < 30000000. && fabs(lrVpf.y()) < 30000000.)
{ // Don't display it, if it is too far, or you get funny results
QPoint lrVp = controller->windowToView(lrVpf.roundQPoint());
gc.drawLine( lrVp.x() - m_handleHalfSize, lrVp.y() - m_handleHalfSize, lrVp.x() + m_handleHalfSize, lrVp.y() + m_handleHalfSize);
gc.drawLine( lrVp.x() - m_handleHalfSize, lrVp.y() + m_handleHalfSize, lrVp.x() + m_handleHalfSize, lrVp.y() - m_handleHalfSize);
}
}
}
void KisToolPerspectiveGrid::drawGrid()
{
if (m_subject) {
KisCanvasController *controller = m_subject->canvasController();
KisCanvas *canvas = controller->kiscanvas();
KisCanvasPainter gc(canvas);
drawGrid(gc);
}
}
void KisToolPerspectiveGrid::setup(KActionCollection *collection)
{
m_action = static_cast<KRadioAction *>(collection->action(name()));
if (m_action == 0) {
m_action = new KRadioAction(i18n("&Perspective Grid"),
"tool_perspectivegrid" ,
0,
this,
SLOT(activate()),
collection,
name());
Q_CHECK_PTR(m_action);
m_action->setExclusiveGroup("tools");
m_action->setToolTip(i18n("Edit the perspective grid"));
m_ownAction = true;
}
}
// QWidget* KisToolPerspectiveGrid::createOptionWidget(QWidget* parent)
// {
// return 0;
// }
//
// QWidget* KisToolPerspectiveGrid::optionWidget()
// {
// return 0;
// }
#include "kis_tool_perspectivegrid.moc"
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