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koffice/kivio/kiviopart/kivio_canvas.cpp

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/*
* Kivio - Visual Modelling and Flowcharting
* Copyright (C) 2000-2001 theKompany.com & Dave Marotti
*
* 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 "kivio_canvas.h"
#include "kivio_page.h"
#include "kivio_map.h"
#include "kivio_view.h"
#include "kivio_doc.h"
#include "kivio_icon_view.h"
#include "kivio_stencil.h"
#include "kivio_stencil_spawner.h"
#include "kivio_stencil_spawner_info.h"
#include "kivio_stackbar.h"
#include "kivio_screen_painter.h"
#include "kivio_grid_data.h"
#include "kivio_layer.h"
#include "kivio_pluginmanager.h"
#include <kdebug.h>
#include <tdelocale.h>
#include <tdemessagebox.h>
#include <kcursor.h>
#include <KoGlobal.h>
#include <KoZoomHandler.h>
#include <KoSize.h>
#include <KoRuler.h>
#include <KoPoint.h>
#include <KoTabBar.h>
#include <tdeapplication.h>
#include <assert.h>
#include <stdio.h>
#include <tqlabel.h>
#include <tqpixmap.h>
#include <tqscrollbar.h>
#include <tqtimer.h>
#include <tqsize.h>
using namespace Kivio;
KivioCanvas::KivioCanvas( TQWidget *par, KivioView* view, KivioDoc* doc, TQScrollBar* vs, TQScrollBar* hs)
: TQWidget(par, "KivioCanvas", WResizeNoErase | WRepaintNoErase),
m_pView(view),
m_pDoc(doc),
m_pVertScrollBar(vs),
m_pHorzScrollBar(hs),
m_guides(view, view->zoomHandler())
{
setBackgroundMode(NoBackground);
setAcceptDrops(true);
setMouseTracking(true);
setFocusPolicy(TQWidget::StrongFocus);
setFocus();
m_showConnectorTargets = false;
delegateThisEvent = true;
m_pVertScrollBar->setLineStep(1);
m_pHorzScrollBar->setLineStep(1);
m_pVertScrollBar->setPageStep(10);
m_pHorzScrollBar->setPageStep(10);
connect(m_pVertScrollBar, TQT_SIGNAL(valueChanged(int)), TQT_SLOT(scrollV(int)));
connect( m_pHorzScrollBar, TQT_SIGNAL(valueChanged(int)), TQT_SLOT(scrollH(int)));
m_iXOffset = 0;
m_iYOffset = 0;
m_pScrollX = 0;
m_pScrollY = 0;
m_pageOffsetX = 0;
m_pageOffsetY = 0;
m_pasteMoving = false;
m_buffer = new TQPixmap();
m_pDragStencil = 0L;
unclippedSpawnerPainter = 0L;
unclippedPainter = 0L;
m_borderTimer = new TQTimer(this);
connect(m_borderTimer,TQT_SIGNAL(timeout()),TQT_SLOT(borderTimerTimeout()));
}
KivioCanvas::~KivioCanvas()
{
delete m_buffer;
delete m_borderTimer;
delete unclippedPainter;
}
KivioPage* KivioCanvas::findPage( const TQString& _name )
{
return m_pDoc->map()->findPage( _name );
}
const KivioPage* KivioCanvas::activePage() const
{
return m_pView->activePage();
}
KivioPage* KivioCanvas::activePage()
{
return m_pView->activePage();
}
void KivioCanvas::scrollH( int value )
{
// Relative movement
int dx = m_iXOffset - value;
// New absolute position
m_iXOffset = value;
bitBlt(m_buffer, dx, 0, m_buffer);
scroll(dx, 0);
emit visibleAreaChanged();
}
void KivioCanvas::scrollV( int value )
{
// Relative movement
int dy = m_iYOffset - value;
// New absolute position
m_iYOffset = value;
bitBlt(m_buffer, 0, dy, m_buffer);
scroll(0, dy);
emit visibleAreaChanged();
}
void KivioCanvas::scrollDx( int dx )
{
if ( dx == 0 )
return;
int value = m_iXOffset - dx;
m_pHorzScrollBar->setValue(value);
}
void KivioCanvas::scrollDy( int dy )
{
if ( dy == 0 )
return;
int value = m_iYOffset - dy;
m_pVertScrollBar->setValue(value);
}
void KivioCanvas::resizeEvent( TQResizeEvent* )
{
m_buffer->resize(size());
updateScrollBars();
emit visibleAreaChanged();
}
void KivioCanvas::wheelEvent( TQWheelEvent* ev )
{
ev->accept();
if( (ev->delta()>0))
{
if(ev->state() == ControlButton) {
zoomIn(ev->pos());
} else if(ev->state() == ShiftButton) {
m_pVertScrollBar->setValue(m_pVertScrollBar->value() - height());
} else {
m_pVertScrollBar->setValue(m_pVertScrollBar->value() - 30);
}
}
else
{
if(ev->state() == ControlButton) {
zoomOut(ev->pos());
} else if(ev->state() == ShiftButton) {
m_pVertScrollBar->setValue(m_pVertScrollBar->value() + height());
} else {
m_pVertScrollBar->setValue(m_pVertScrollBar->value() + 30);
}
}
}
void KivioCanvas::setUpdatesEnabled( bool isUpdate )
{
static int i = 0;
TQWidget::setUpdatesEnabled(isUpdate);
if (isUpdate) {
--i;
if (i == 0) {
update();
updateScrollBars();
blockSignals(false);
emit visibleAreaChanged();
}
} else {
i++;
blockSignals(true);
}
}
void KivioCanvas::zoomIn(const TQPoint &p)
{
setUpdatesEnabled(false);
KoPoint p0 = mapFromScreen(p);
m_pView->viewZoom(m_pView->zoomHandler()->zoom() + 25);
TQPoint p1 = mapToScreen(p0);
scrollDx(-p1.x()+p.x());
scrollDy(-p1.y()+p.y());
setUpdatesEnabled(true);
}
void KivioCanvas::zoomOut(const TQPoint &p)
{
setUpdatesEnabled(false);
KoPoint p0 = mapFromScreen(p);
int newZoom = m_pView->zoomHandler()->zoom() - 25;
if(newZoom > 0) {
m_pView->viewZoom(newZoom);
TQPoint p1 = mapToScreen(p0);
scrollDx(-p1.x()+p.x());
scrollDy(-p1.y()+p.y());
}
setUpdatesEnabled(true);
}
void KivioCanvas::paintEvent( TQPaintEvent* ev )
{
if ( m_pDoc->isLoading() || !activePage() )
return;
KivioPage* page = activePage();
TQPainter painter;
painter.begin(m_buffer);
KoPageLayout pl = page->paperLayout();
int pw = m_pView->zoomHandler()->zoomItX(pl.ptWidth);
int ph = m_pView->zoomHandler()->zoomItY(pl.ptHeight);
TQRect fillRect(0, 0, pw, ph);
TQRect paintRect = ev->rect();
TQRegion grayRegion(paintRect);
grayRegion.translate(m_iXOffset - m_pageOffsetX, m_iYOffset - m_pageOffsetY);
grayRegion -= fillRect;
grayRegion.translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
// This code comes from KPresenter's kprcanvas.cpp
// Copyright (C) 1998, 1999 Reginald Stadlbauer <reggie@kde.org>
painter.save();
painter.setClipRegion(grayRegion, TQPainter::CoordPainter);
painter.setPen(TQt::NoPen);
painter.fillRect(grayRegion.boundingRect(), TDEApplication::palette().active().brush(TQColorGroup::Mid));
painter.restore();
// end of copy...
painter.translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset +m_pageOffsetY);
painter.fillRect(fillRect, white);
// Draw Grid
if(m_pDoc->grid().isShow) {
KoPoint topLeft(0, 0);
KoPoint bottomRight(pl.ptWidth, pl.ptHeight);
TQPoint zoomedTL = m_pView->zoomHandler()->zoomPoint(topLeft);
TQPoint zoomedBR = m_pView->zoomHandler()->zoomPoint(bottomRight);
KoSize freq = m_pDoc->grid().freq;
painter.setPen(m_pDoc->grid().color);
double x = tqRound(topLeft.x() / freq.width()) * freq.width();
int zoomed = 0;
while(x <= bottomRight.x()) {
zoomed = m_pView->zoomHandler()->zoomItX(x);
painter.drawLine(zoomed, zoomedTL.y(), zoomed, zoomedBR.y());
x += freq.width();
}
double y = tqRound(topLeft.y() / freq.height()) * freq.height();
while(y <= bottomRight.y()) {
zoomed = m_pView->zoomHandler()->zoomItY(y);
painter.drawLine(zoomedTL.x(), zoomed, zoomedBR.x(), zoomed);
y += freq.height();
}
}
if(m_pView->isShowPageMargins()) {
int ml = m_pView->zoomHandler()->zoomItX(pl.ptLeft);
int mt = m_pView->zoomHandler()->zoomItY(pl.ptTop);
int mr = m_pView->zoomHandler()->zoomItX(pl.ptRight);
int mb = m_pView->zoomHandler()->zoomItY(pl.ptBottom);
painter.save();
painter.setPen(TQPen("#C7C7C7",1,SolidLine));
painter.drawRect(ml,mt,pw-ml-mr,ph-mt-mb);
painter.restore();
}
// Draw page borders
painter.setPen(black);
painter.fillRect(pw, 3, 5, ph, gray);
painter.fillRect(3, ph, pw, 3, gray);
painter.drawRect(0, 0, pw, ph);
// Draw content
KivioScreenPainter kpainter;
kpainter.start(m_buffer);
kpainter.translateBy(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
m_pDoc->paintContent(kpainter, paintRect, false, page, TQPoint(0, 0), m_pView->zoomHandler(), showConnectorTargets(), true);
kpainter.stop();
if(m_pView->isShowGuides()) {
m_guides.paintGuides(painter);
}
painter.end();
bitBlt(this, paintRect.left(), paintRect.top(), m_buffer,
paintRect.left(), paintRect.top(), paintRect.width(), paintRect.height());
}
void KivioCanvas::updateScrollBars()
{
if(!activePage()) {
return;
}
KoPageLayout pl = activePage()->paperLayout();
int pw = m_pView->zoomHandler()->zoomItX(pl.ptWidth);
int ph = m_pView->zoomHandler()->zoomItY(pl.ptHeight);
m_pScrollX = TQMAX(pw - width(), 0);
m_pScrollY = TQMAX(ph - height(), 0);
m_pHorzScrollBar->setRange(0, m_pScrollX);
if ( m_pHorzScrollBar->value() > m_pHorzScrollBar->maxValue() ||
m_pHorzScrollBar->value() < m_pHorzScrollBar->minValue() )
{
m_pHorzScrollBar->setValue(0);
}
m_pVertScrollBar->setRange(0, m_pScrollY);
if ( m_pVertScrollBar->value() > m_pVertScrollBar->maxValue() ||
m_pVertScrollBar->value() < m_pVertScrollBar->minValue() )
{
m_pVertScrollBar->setValue(0);
}
m_pVertScrollBar->setPageStep( height() );
m_pHorzScrollBar->setPageStep( width() );
if(pw >= width()) {
m_pageOffsetX = 0;
} else {
m_pageOffsetX = (width() - pw) / 2;
}
if(ph >= height()) {
m_pageOffsetY = 0;
} else {
m_pageOffsetY = (height() - ph) / 2;
}
}
TQSize KivioCanvas::actualSize() const
{
return TQSize(m_pScrollX, m_pScrollY);
}
bool KivioCanvas::event( TQEvent* e )
{
bool f = TQWidget::event(e);
if (m_pView->pluginManager() && delegateThisEvent) {
f = m_pView->pluginManager()->delegateEvent(e);
}
delegateThisEvent = true;
return f;
}
void KivioCanvas::enterEvent( TQEvent* )
{
}
void KivioCanvas::leaveEvent( TQEvent* )
{
m_pView->setMousePos(-1, -1);
}
void KivioCanvas::mousePressEvent(TQMouseEvent* e)
{
if(!m_pDoc->isReadWrite())
return;
if(m_pasteMoving) {
endPasteMoving();
return;
}
Kivio::PluginManager* pluginManager = view()->pluginManager();
if(m_pView->isShowGuides() && (!pluginManager || (pluginManager->defaultTool() == pluginManager->activeTool()))) {
if(m_guides.mousePressEvent(e)) {
delegateThisEvent = false;
return;
}
}
}
void KivioCanvas::mouseReleaseEvent(TQMouseEvent* e)
{
if(!m_pDoc->isReadWrite())
return;
Kivio::PluginManager* pluginManager = view()->pluginManager();
if(view()->isShowGuides() && (!pluginManager || (pluginManager->defaultTool() == pluginManager->activeTool()))) {
if(m_guides.mouseReleaseEvent(e)) {
delegateThisEvent = false;
return;
}
}
}
void KivioCanvas::mouseMoveEvent(TQMouseEvent* e)
{
if(!m_pDoc->isReadWrite())
return;
if(m_pasteMoving) {
continuePasteMoving(e->pos());
} else {
Kivio::PluginManager* pluginManager = view()->pluginManager();
if(m_pView->isShowGuides() && (!pluginManager || (pluginManager->defaultTool() == pluginManager->activeTool()))) {
delegateThisEvent = !m_guides.mouseMoveEvent(e);
}
}
lastPoint = e->pos();
view()->setMousePos(lastPoint.x(), lastPoint.y());
}
TQPoint KivioCanvas::mapToScreen(const KoPoint& pos)
{
TQPoint p;
int x = m_pView->zoomHandler()->zoomItX(pos.x());
int y = m_pView->zoomHandler()->zoomItY(pos.y());
p.setX( x - m_iXOffset + m_pageOffsetX);
p.setY( y - m_iYOffset + m_pageOffsetY);
return p;
}
KoPoint KivioCanvas::mapFromScreen( const TQPoint & pos )
{
int x = pos.x() + m_iXOffset - m_pageOffsetX;
int y = pos.y() + m_iYOffset - m_pageOffsetY;
double xf = m_pView->zoomHandler()->unzoomItX(x);
double yf = m_pView->zoomHandler()->unzoomItY(y);
KoPoint p(xf, yf);
return p;
}
void KivioCanvas::startRectDraw( const TQPoint &p, RectType )
{
currRect = TQRect( 0, 0, -1, -1 );
TQPoint pos( p );
oldRectValid = false;
beginUnclippedPainter();
rectAnchor = pos;
currRect = TQRect( rectAnchor, TQPoint(0,0) );
m_borderTimer->start(100);
}
void KivioCanvas::continueRectDraw( const TQPoint &p, RectType )
{
TQPoint pos = p;
TQPoint p2 = pos;
TQRect r( rectAnchor, p2 );
r = r.normalize();
if ( oldRectValid )
unclippedPainter->drawRect( currRect );
if ( r.width() > 1 || r.height() > 1 ) {
oldRectValid = true;
currRect = r;
unclippedPainter->drawRect( currRect );
} else {
oldRectValid = false;
}
}
void KivioCanvas::endRectDraw()
{
m_borderTimer->stop();
if ( !unclippedPainter )
return;
if ( oldRectValid )
unclippedPainter->drawRect( currRect );
endUnclippedPainter();
}
/**
* Starts a new drag & draw (called from the drag enter event)
*
* @param p The point to begin at
*
* This will allocate a new KivioStencil for drawing with and
* set some class variables used during redraws.
*/
void KivioCanvas::startSpawnerDragDraw( const TQPoint &p )
{
currRect = TQRect( 0, 0, -1, -1 );
KivioStencilSpawner *pSpawner = KivioIconView::curDragSpawner();
if( !pSpawner )
return;
// If we for some reason didn't delete an old drag stencil,
// do so now.
if( m_pDragStencil )
{
kdDebug(43000) << "KivioCanvas::startSpawnerDragDraw() - m_pDragStencil still exists. BUG!" << endl;
delete m_pDragStencil;
m_pDragStencil = 0L;
}
// Map the point from screenspace to page space
KoPoint qp = mapFromScreen( p );
qp = snapToGrid(qp);
// Allocate a new stencil for dragging around
m_pDragStencil = pSpawner->newStencil();
m_pDragStencil->setPosition( qp.x(), qp.y() );
// Invalidate the rectangle
oldRectValid = true;
// Create a new painter object
beginUnclippedSpawnerPainter();
// Translate the painter so that 0,0 means where the page starts on the canvas
unclippedSpawnerPainter->painter()->save();
unclippedSpawnerPainter->painter()->translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
// Assign the painter object to the intra-stencil data object, as well
// as the zoom factor
m_dragStencilData.painter = unclippedSpawnerPainter;
m_dragStencilData.zoomHandler = m_pView->zoomHandler();
// Draw the outline of the stencil
m_pDragStencil->paintOutline( &m_dragStencilData );
unclippedSpawnerPainter->painter()->restore();
}
/**
* Undraws the old stencil outline, draws the new one
*/
void KivioCanvas::continueSpawnerDragDraw( const TQPoint &p )
{
bool snappedX, snappedY;
// Translate the painter so that 0,0 means where the page starts on the canvas
unclippedSpawnerPainter->painter()->save();
unclippedSpawnerPainter->painter()->translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
// Undraw the old outline
if( oldRectValid )
{
m_pDragStencil->paintOutline( &m_dragStencilData );
}
// Map the new point from screenspace to page space
KoPoint orig = mapFromScreen(p);
KoPoint qp = snapToGrid( orig );
// First snap to screen
qp = snapToGrid(qp);
m_pDragStencil->setPosition( qp.x(), qp.y() );
// Now snap to the guides
qp.setCoords(orig.x() + m_pDragStencil->w(), orig.y() + m_pDragStencil->h());
qp = snapToGuides(qp, snappedX, snappedY);
if(snappedX) {
m_pDragStencil->setX(qp.x() - m_pDragStencil->w());
}
if(snappedY) {
m_pDragStencil->setY(qp.y() - m_pDragStencil->h());
}
qp.setCoords(orig.x() + (m_pDragStencil->w() / 2.0), orig.y() + (m_pDragStencil->h() / 2.0));
qp = snapToGuides(qp, snappedX, snappedY);
if(snappedX) {
m_pDragStencil->setX(qp.x() - (m_pDragStencil->w() / 2.0));
}
if(snappedY) {
m_pDragStencil->setY(qp.y() - (m_pDragStencil->h() / 2.0));
}
qp.setCoords(orig.x(), orig.y());
qp = snapToGuides(qp, snappedX, snappedY);
if(snappedX) {
m_pDragStencil->setX(qp.x());
}
if(snappedY) {
m_pDragStencil->setY(qp.y());
}
// Redraw the new outline
oldRectValid = true;
m_pDragStencil->paintOutline( &m_dragStencilData );
unclippedSpawnerPainter->painter()->restore();
}
/**
* Ends the ability to draw a drag & drop spawner object
*/
void KivioCanvas::endSpawnerDragDraw()
{
// Avoid the noid
if ( !unclippedSpawnerPainter )
return;
// If we have a valid old drawing spot, undraw it
if ( oldRectValid )
{
unclippedSpawnerPainter->painter()->save();
unclippedSpawnerPainter->painter()->translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
m_pDragStencil->paintOutline( &m_dragStencilData );
unclippedSpawnerPainter->painter()->restore();
}
// Smack the painter around a bit
endUnclippedSpawnerPainter();
// If we have a stencil we were dragging around, delete it.
if( m_pDragStencil )
{
delete m_pDragStencil;
m_pDragStencil = 0L;
}
setFocus();
}
/**
* Creates a new spawner drawing object
*/
void KivioCanvas::beginUnclippedSpawnerPainter()
{
// End any previous attempts
endUnclippedSpawnerPainter();
// I have no idea what this does. Max?
bool unclipped = testWFlags( WPaintUnclipped );
setWFlags( WPaintUnclipped );
// Allocate a new painter object for use in drawing
unclippedSpawnerPainter = new KivioScreenPainter();
// Tell it to start (allocates a Qpainter object)
unclippedSpawnerPainter->start(this);
// Uhhhhh??
if( !unclipped )
clearWFlags( WPaintUnclipped );
// Make sure it's doing NOT drawing.
unclippedSpawnerPainter->painter()->setRasterOp( NotROP );
unclippedSpawnerPainter->painter()->setPen( TQColor(0,0,250) );
}
/**
* Deletes the current spawner drawing object
*/
void KivioCanvas::endUnclippedSpawnerPainter()
{
if( unclippedSpawnerPainter )
{
unclippedSpawnerPainter->stop();
delete unclippedSpawnerPainter;
unclippedSpawnerPainter = 0L;
}
}
void KivioCanvas::beginUnclippedPainter()
{
endUnclippedPainter();
bool unclipped = testWFlags( WPaintUnclipped );
setWFlags( WPaintUnclipped );
unclippedPainter = new TQPainter;
unclippedPainter->begin( this );
if ( !unclipped )
clearWFlags( WPaintUnclipped );
unclippedPainter->setRasterOp( NotROP );
unclippedPainter->setPen( TQPen(blue,1,DotLine) );
}
void KivioCanvas::endUnclippedPainter()
{
if ( unclippedPainter )
{
unclippedPainter->end();
delete unclippedPainter;
unclippedPainter = 0;
}
}
void KivioCanvas::borderTimerTimeout()
{
TQPoint p = mapFromGlobal(TQCursor::pos());
int dx = 0;
int dy = 0;
int d = 10;
TQRect r(currRect);
int vpos = m_pVertScrollBar->value();
int vmax = m_pVertScrollBar->maxValue();
int vmin = m_pVertScrollBar->minValue();
int hpos = m_pHorzScrollBar->value();
int hmax = m_pHorzScrollBar->maxValue();
int hmin = m_pHorzScrollBar->minValue();
if ( p.x() < 0 && hpos > hmin ) {
dx = TQMIN(d,hpos-hmin);
r.setRight(r.right()+dx);
rectAnchor.setX(rectAnchor.x()+dx);
}
if ( p.y() < 0 && vpos > vmin ) {
dy = TQMIN(d,vpos-vmin);
r.setBottom(r.bottom()+dy);
rectAnchor.setY(rectAnchor.y()+dy);
}
if ( p.x() > width() && hpos < hmax ) {
dx = -TQMIN(d,hmax-hpos);
r.setLeft(r.left()+dx);
rectAnchor.setX(rectAnchor.x()+dx);
}
if ( p.y() > height() && vpos < vmax ) {
dy = -TQMIN(d,vmax-vpos);
r.setTop(r.top()+dy);
rectAnchor.setY(rectAnchor.y()+dy);
}
if ( dx != 0 || dy != 0 ) {
unclippedPainter->drawRect( currRect );
scrollDx(dx);
scrollDy(dy);
unclippedPainter->drawRect( r );
currRect = r;
}
}
/**
* Handles the initial drag event
*
* @param e The event
*
* This will check to make sure the drag object is of the correct mimetype.
* If it is, it accepts it, and the calls startSpawnerDragDraw which will
* allocate a new drawing object and set some class variables for future
* drawing.
*/
void KivioCanvas::dragEnterEvent( TQDragEnterEvent *e )
{
if( e->provides("kivio/stencilSpawner") )
{
e->accept();
startSpawnerDragDraw( e->pos() );
activePage()->unselectAllStencils();
updateAutoGuideLines();
}
}
/**
* Handles drag-move events
*
* @param e The event
*
* This makes sure the drag object is of type kivio/stencilSpawner since these
* are currently the only type of mime-types accepted. If so, it accepts the
* event, and then tells the drawing object to update itself with a new position.
*/
void KivioCanvas::dragMoveEvent( TQDragMoveEvent *e )
{
// Does it speak our language?
if( e->provides("kivio/stencilSpawner") )
{
e->accept();
continueSpawnerDragDraw( e->pos() );
}
}
/**
* Handles drops for this object
*
* @param e The drop event object
*
* This function takes care of handling the final drop event of this object. It will
* allocate a new object of the currently dragged Spawner type (stencil), and add it
* to the active page of the document (which actually adds it to the active layer
* of the active page).
*/
void KivioCanvas::dropEvent( TQDropEvent *e )
{
// Terminate the drawing object
endSpawnerDragDraw();
// Get a pointer to the currently dragged KivioStencilSpawner object
KivioStencilSpawner *pSpawner = KivioIconView::curDragSpawner();
if( !pSpawner )
return;
TQPoint pos = e->pos();
KoPoint pagePoint = snapToGrid(mapFromScreen( pos ));
view()->addStencilFromSpawner(pSpawner, pagePoint.x(), pagePoint.y());
// FIXME Select the "selection tool" in case it's not done
}
/**
* Handles when a drag leaves this object
*
* @param e The event object
*
* This will call endSpawnerDragDraw() which terminates the drawing
* object and ends interaction with the drag.
*/
void KivioCanvas::dragLeaveEvent( TQDragLeaveEvent * )
{
endSpawnerDragDraw();
}
void KivioCanvas::drawSelectedStencilsXOR()
{
// This should never happen, but check just in case
if ( !unclippedSpawnerPainter )
return;
// Translate the painter so that 0,0 means where the page starts on the canvas
unclippedSpawnerPainter->painter()->save();
unclippedSpawnerPainter->painter()->translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
// Assign the painter object to the intra-stencil data object, as well
// as the zoom factor
m_dragStencilData.painter = unclippedSpawnerPainter;
m_dragStencilData.zoomHandler = m_pView->zoomHandler();
KivioStencil *pStencil = activePage()->selectedStencils()->first();
while( pStencil )
{
pStencil->paintOutline( &m_dragStencilData );
pStencil->paintSelectionHandles( &m_dragStencilData );
pStencil = activePage()->selectedStencils()->next();
}
unclippedSpawnerPainter->painter()->restore();
}
void KivioCanvas::drawStencilXOR( KivioStencil *pStencil )
{
// This should never happen, but check just in case
if ( !unclippedSpawnerPainter )
return;
// Translate the painter so that 0,0 means where the page starts on the canvas
unclippedSpawnerPainter->painter()->save();
unclippedSpawnerPainter->painter()->translate(-m_iXOffset + m_pageOffsetX, -m_iYOffset + m_pageOffsetY);
// Assign the painter object to the intra-stencil data object, as well
// as the zoom factor
m_dragStencilData.painter = unclippedSpawnerPainter;
m_dragStencilData.zoomHandler = m_pView->zoomHandler();
pStencil->paintOutline( &m_dragStencilData );
pStencil->paintSelectionHandles( &m_dragStencilData );
unclippedSpawnerPainter->painter()->restore();
}
void KivioCanvas::keyPressEvent( TQKeyEvent *e )
{
if(view()->isShowGuides() && m_guides.keyPressEvent(e)) {
return;
}
}
KoPoint KivioCanvas::snapToGridAndGuides(const KoPoint& point)
{
KoPoint p = point;
p = snapToGrid(p);
bool snappedX, snappedY;
KoPoint guidePoint = snapToGuides(point, snappedX, snappedY);
if(snappedX) {
p.setX(guidePoint.x());
}
if(snappedY) {
p.setY(guidePoint.y());
}
return p;
}
KoPoint KivioCanvas::snapToGrid(const KoPoint& point)
{
if (!m_pDoc->grid().isSnap)
return point;
KoPoint p = point;
KoSize dist = m_pDoc->grid().snap;
KoSize freq = m_pDoc->grid().freq;
double dx = tqRound(p.x() / freq.width());
double dy = tqRound(p.y() / freq.height());
double distx = TQABS(p.x() - (freq.width() * dx));
double disty = TQABS(p.y() - (freq.height() * dy));
if(distx < dist.width()) {
p.setX(freq.width() * dx);
}
if(disty < dist.height()) {
p.setY(freq.height() * dy);
}
return p;
}
KoPoint KivioCanvas::snapToGuides(const KoPoint& point, bool &snappedX, bool &snappedY)
{
snappedX = false;
snappedY = false;
KoPoint p = point;
if (m_pView->isSnapGuides())
{
KoGuides::SnapStatus status = KoGuides::SNAP_NONE;
KoPoint diff;
m_guides.snapToGuideLines(p, 4, status, diff);
p += diff;
if(status & KoGuides::SNAP_HORIZ) {
snappedY = true;
}
if(status & KoGuides::SNAP_VERT) {
snappedX = true;
}
m_guides.repaintSnapping(p, status);
}
return p;
}
void KivioCanvas::setViewCenterPoint(const KoPoint &p)
{
setUpdatesEnabled(false);
KoRect va = visibleArea();
double x = TQMAX(0.0, p.x() - (va.width() / 2.0));
double y = TQMAX(0.0, p.y() - (va.height() / 2.0));
m_pVertScrollBar->setValue(m_pView->zoomHandler()->zoomItY(y));
m_pHorzScrollBar->setValue(m_pView->zoomHandler()->zoomItX(x));
setUpdatesEnabled(true);
}
KoRect KivioCanvas::visibleArea()
{
KoPoint p0 = mapFromScreen(TQPoint(0,0));
KoPoint p1 = mapFromScreen(TQPoint(width()-1,height()-1));
return KoRect(p0.x(), p0.y(), p1.x() - p0.x(), p1.y() - p0.y());
}
void KivioCanvas::setVisibleArea(KoRect r, int margin)
{
setUpdatesEnabled(false);
KoZoomHandler zoom;
zoom.setZoomAndResolution(100, KoGlobal::dpiX(),
KoGlobal::dpiY());
float cw = width() - 2 * margin;
float ch = height() - 2 * margin;
float zw = cw / (float)zoom.zoomItX(r.width());
float zh = ch / (float)zoom.zoomItY(r.height());
float z = TQMIN(zw, zh);
m_pView->viewZoom(tqRound(z * 100));
KoPoint c = r.center();
setViewCenterPoint(KoPoint(c.x(), c.y()));
setUpdatesEnabled(true);
}
void KivioCanvas::setVisibleAreaByWidth(KoRect r, int margin)
{
setUpdatesEnabled(false);
KoZoomHandler zoom;
zoom.setZoomAndResolution(100, KoGlobal::dpiX(),
KoGlobal::dpiY());
float cw = width() - 2*margin;
float z = cw / (float)zoom.zoomItX(r.width());
m_pView->viewZoom(tqRound(z * 100));
KoPoint c = r.center();
setViewCenterPoint(KoPoint(c.x(), c.y()));
setUpdatesEnabled(true);
}
void KivioCanvas::setVisibleAreaByHeight(KoRect r, int margin)
{
setUpdatesEnabled(false);
KoZoomHandler zoom;
zoom.setZoomAndResolution(100, KoGlobal::dpiX(),
KoGlobal::dpiY());
float ch = height() - 2*margin;
float z = ch / (float)zoom.zoomItY(r.height());
m_pView->viewZoom(tqRound(z * 100));
KoPoint c = r.center();
setViewCenterPoint(KoPoint(c.x(), c.y()));
setUpdatesEnabled(true);
}
void KivioCanvas::startPasteMoving()
{
setEnabled(false);
KoPoint p = activePage()->getRectForAllSelectedStencils().center();
m_origPoint.setCoords(p.x(), p.y());
// Create a new painter object
beginUnclippedSpawnerPainter();
drawSelectedStencilsXOR();
// Build the list of old geometry
KoRect *pData;
m_lstOldGeometry.clear();
KivioStencil* pStencil = activePage()->selectedStencils()->first();
while( pStencil )
{
pData = new KoRect;
*pData = pStencil->rect();
m_lstOldGeometry.append(pData);
pStencil = activePage()->selectedStencils()->next();
}
continuePasteMoving(lastPoint);
m_pasteMoving = true;
setEnabled(true);
}
void KivioCanvas::continuePasteMoving(const TQPoint &pos)
{
KoPoint pagePoint = mapFromScreen( pos );
double dx = pagePoint.x() - m_origPoint.x();
double dy = pagePoint.y() - m_origPoint.y();
bool snappedX;
bool snappedY;
double newX, newY;
// Undraw the old stencils
drawSelectedStencilsXOR();
// Translate to the new position
KoPoint p;
KoRect selectedRect = activePage()->getRectForAllSelectedStencils();
newX = selectedRect.x() + dx;
newY = selectedRect.y() + dy;
// First attempt a snap-to-grid
p.setCoords(newX, newY);
p = snapToGrid(p);
newX = p.x();
newY = p.y();
// Now the guides override the grid so we attempt to snap to them
p.setCoords(selectedRect.x() + dx + selectedRect.width(), selectedRect.y() + dy + selectedRect.height());
p = snapToGuides(p, snappedX, snappedY);
if(snappedX) {
newX = p.x() - selectedRect.width();
}
if(snappedY) {
newY = p.y() - selectedRect.height();
}
p.setCoords(selectedRect.x() + dx + (selectedRect.width() / 2.0), selectedRect.y() + dy + (selectedRect.height() / 2.0));
p = snapToGuides(p, snappedX, snappedY);
if(snappedX) {
newX = p.x() - (selectedRect.width() / 2.0);
}
if(snappedY) {
newY = p.y() - (selectedRect.height() / 2.0);
}
p.setCoords(selectedRect.x() + dx, selectedRect.y() + dy);
p = snapToGuides(p, snappedX, snappedY);
if(snappedX) {
newX = p.x();
}
if(snappedY) {
newY = p.y();
}
dx = newX - selectedRect.x();
dy = newY - selectedRect.y();
// Translate to the new position
KivioStencil *pStencil = activePage()->selectedStencils()->first();
KoRect* pData = m_lstOldGeometry.first();
// bool move = true;
while( pStencil && pData )
{
newX = pData->x() + dx;
newY = pData->y() + dy;
if( pStencil->protection()->at( kpX ) == false ) {
pStencil->setX(newX);
}
if( pStencil->protection()->at( kpY ) == false ) {
pStencil->setY(newY);
}
pData = m_lstOldGeometry.next();
pStencil = activePage()->selectedStencils()->next();
}
// Draw the stencils
drawSelectedStencilsXOR();
m_pView->updateToolBars();
}
void KivioCanvas::endPasteMoving()
{
KivioStencil *pStencil = activePage()->selectedStencils()->first();
KoRect *pData = m_lstOldGeometry.first();
while( pStencil && pData )
{
if(pStencil->type() == kstConnector) {
pStencil->searchForConnections(m_pView->activePage(), m_pView->zoomHandler()->unzoomItY(4));
}
pData = m_lstOldGeometry.next();
pStencil = activePage()->selectedStencils()->next();
}
drawSelectedStencilsXOR();
endUnclippedSpawnerPainter();
// Clear the list of old geometry
m_lstOldGeometry.clear();
m_pasteMoving = false;
}
void KivioCanvas::updateAutoGuideLines()
{
TQValueList<double> hGuideLines;
TQValueList<double> vGuideLines;
TQPtrList<KivioLayer> layerList = *(activePage()->layers());
TQPtrListIterator<KivioLayer> layerIt(layerList);
KivioLayer* layer = 0;
TQPtrList<KivioStencil> stencilList;
TQPtrListIterator<KivioStencil> stencilIt(stencilList);
KivioStencil* stencil = 0;
while((layer = layerIt.current()) != 0) {
++layerIt;
if(layer->visible()) {
stencilList = *(layer->stencilList());
stencilIt.toFirst();
while((stencil = stencilIt.current()) != 0) {
++stencilIt;
if(!stencil->isSelected()) {
hGuideLines << stencil->y() << (stencil->y() + (stencil->h() / 2.0)) << (stencil->y() + stencil->h());
vGuideLines << stencil->x() << (stencil->x() + (stencil->w() / 2.0)) << (stencil->x() + stencil->w());
}
}
}
}
KoPageLayout pl = activePage()->paperLayout();
// Add the middle of the page and the margins
hGuideLines << (pl.ptHeight / 2.0) << pl.ptTop << pl.ptBottom;
vGuideLines << (pl.ptWidth / 2.0) << pl.ptLeft << pl.ptRight;
guideLines().setAutoGuideLines(hGuideLines, vGuideLines);
}
#include "kivio_canvas.moc"
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