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tdewebdev/kommander/editor/sizehandle.cpp

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/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of TQt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include <tqvariant.h> // HP-UX compiler needs this here
#include "sizehandle.h"
#include "formwindow.h"
#include "widgetfactory.h"
#include <tqwidget.h>
#include <tqapplication.h>
#include <tqlabel.h>
#include <klocale.h>
SizeHandle::SizeHandle( FormWindow *parent, Direction d, WidgetSelection *s )
: TQWidget( parent )
{
active = true;
setBackgroundMode( active ? PaletteText : PaletteDark );
setFixedSize( 6, 6 );
widget = 0;
dir =d ;
setMouseTracking( false );
formWindow = parent;
sel = s;
updateCursor();
}
void SizeHandle::updateCursor()
{
if ( !active ) {
setCursor( arrowCursor );
return;
}
switch ( dir ) {
case LeftTop:
setCursor( sizeFDiagCursor );
break;
case Top:
setCursor( sizeVerCursor );
break;
case RightTop:
setCursor( sizeBDiagCursor );
break;
case Right:
setCursor( sizeHorCursor );
break;
case RightBottom:
setCursor( sizeFDiagCursor );
break;
case Bottom:
setCursor( sizeVerCursor );
break;
case LeftBottom:
setCursor( sizeBDiagCursor );
break;
case Left:
setCursor( sizeHorCursor );
break;
}
}
void SizeHandle::setActive( bool a )
{
active = a;
setBackgroundMode( active ? PaletteText : PaletteDark );
updateCursor();
}
void SizeHandle::setWidget( TQWidget *w )
{
widget = w;
}
void SizeHandle::paintEvent( TQPaintEvent * )
{
if ( ( (FormWindow*)parentWidget() )->currentWidget() != widget )
return;
TQPainter p( this );
p.setPen( blue );
p.drawRect( 0, 0, width(), height() );
}
void SizeHandle::mousePressEvent( TQMouseEvent *e )
{
if ( !widget || e->button() != Qt::LeftButton || !active )
return;
oldPressPos = e->pos();
geom = origGeom = TQRect( widget->pos(), widget->size() );
}
void SizeHandle::mouseMoveEvent( TQMouseEvent *e )
{
if ( !widget || ( e->state() & Qt::LeftButton ) != Qt::LeftButton || !active )
return;
TQPoint rp = mapFromGlobal( e->globalPos() );
TQPoint d = oldPressPos - rp;
oldPressPos = rp;
TQPoint checkPos = widget->parentWidget()->mapFromGlobal( e->globalPos() );
TQRect pr = widget->parentWidget()->rect();
// ##### move code around a bit to reduce duplicated code here
switch ( dir ) {
case LeftTop: {
if ( checkPos.x() > pr.width() - 2 * width() || checkPos.y() > pr.height() - 2 * height() )
return;
int w = geom.width() + d.x();
geom.setWidth( w );
w = ( w / formWindow->grid().x() ) * formWindow->grid().x();
int h = geom.height() + d.y();
geom.setHeight( h );
h = ( h / formWindow->grid().y() ) * formWindow->grid().y();
int dx = widget->width() - w;
int dy = widget->height() - h;
trySetGeometry( widget, widget->x() + dx, widget->y() + dy, w, h );
} break;
case Top: {
if ( checkPos.y() > pr.height() - 2 * height() )
return;
int h = geom.height() + d.y();
geom.setHeight( h );
h = ( h / formWindow->grid().y() ) * formWindow->grid().y();
int dy = widget->height() - h;
trySetGeometry( widget, widget->x(), widget->y() + dy, widget->width(), h );
} break;
case RightTop: {
if ( checkPos.x() < 2 * width() || checkPos.y() > pr.height() - 2 * height() )
return;
int h = geom.height() + d.y();
geom.setHeight( h );
h = ( h / formWindow->grid().y() ) * formWindow->grid().y();
int dy = widget->height() - h;
int w = geom.width() - d.x();
geom.setWidth( w );
w = ( w / formWindow->grid().x() ) * formWindow->grid().x();
trySetGeometry( widget, widget->x(), widget->y() + dy, w, h );
} break;
case Right: {
if ( checkPos.x() < 2 * width() )
return;
int w = geom.width() - d.x();
geom.setWidth( w );
w = ( w / formWindow->grid().x() ) * formWindow->grid().x();
tryResize( widget, w, widget->height() );
} break;
case RightBottom: {
if ( checkPos.x() < 2 * width() || checkPos.y() < 2 * height() )
return;
int w = geom.width() - d.x();
geom.setWidth( w );
w = ( w / formWindow->grid().x() ) * formWindow->grid().x();
int h = geom.height() - d.y();
geom.setHeight( h );
h = ( h / formWindow->grid().y() ) * formWindow->grid().y();
tryResize( widget, w, h );
} break;
case Bottom: {
if ( checkPos.y() < 2 * height() )
return;
int h = geom.height() - d.y();
geom.setHeight( h );
h = ( h / formWindow->grid().y() ) * formWindow->grid().y();
tryResize( widget, widget->width(), h );
} break;
case LeftBottom: {
if ( checkPos.x() > pr.width() - 2 * width() || checkPos.y() < 2 * height() )
return;
int w = geom.width() + d.x();
geom.setWidth( w );
w = ( w / formWindow->grid().x() ) * formWindow->grid().x();
int dx = widget->width() - w;
int h = geom.height() - d.y();
geom.setHeight( h );
h = ( h / formWindow->grid().y() ) * formWindow->grid().y();
trySetGeometry( widget, widget->x() + dx, widget->y(), w, h );
} break;
case Left: {
if ( checkPos.x() > pr.width() - 2 * width() )
return;
int w = geom.width() + d.x();
geom.setWidth( w );
w = ( w / formWindow->grid().x() ) * formWindow->grid().x();
int dx = widget->width() - w;
trySetGeometry( widget, widget->x() + dx, widget->y(), w, widget->height() );
} break;
}
TQPoint p = pos();
sel->updateGeometry();
oldPressPos += ( p - pos() );
formWindow->sizePreview()->setText( TQString( "%1/%2" ).arg( widget->width() ).arg( widget->height() ) );
formWindow->sizePreview()->adjustSize();
TQRect lg( formWindow->mapFromGlobal( e->globalPos() ) + TQPoint( 16, 16 ),
formWindow->sizePreview()->size() );
formWindow->checkPreviewGeometry( lg );
formWindow->sizePreview()->setGeometry( lg );
formWindow->sizePreview()->show();
formWindow->sizePreview()->raise();
if ( WidgetFactory::layoutType( widget ) != WidgetFactory::NoLayout )
formWindow->updateChildSelections( widget );
}
void SizeHandle::mouseReleaseEvent( TQMouseEvent *e )
{
if ( e->button() != Qt::LeftButton || !active )
return;
formWindow->sizePreview()->hide();
if ( geom != widget->geometry() )
formWindow->commandHistory()->addCommand( new ResizeCommand( i18n("Resize" ),
formWindow,
widget, origGeom,
widget->geometry() ) );
formWindow->emitUpdateProperties( TQT_TQOBJECT(widget) );
}
void SizeHandle::trySetGeometry( TQWidget *w, int x, int y, int width, int height )
{
int minw = TQMAX( w->minimumSizeHint().width(), w->minimumSize().width() );
minw = TQMAX( minw, 2 * formWindow->grid().x() );
int minh = TQMAX( w->minimumSizeHint().height(), w->minimumSize().height() );
minh = TQMAX( minh, 2 * formWindow->grid().y() );
if ( TQMAX( minw, width ) > w->maximumWidth() ||
TQMAX( minh, height ) > w->maximumHeight() )
return;
if ( width < minw && x != w->x() )
x -= minw - width;
if ( height < minh && y != w->y() )
y -= minh - height;
w->setGeometry( x, y, TQMAX( minw, width ), TQMAX( minh, height ) );
}
void SizeHandle::tryResize( TQWidget *w, int width, int height )
{
int minw = TQMAX( w->minimumSizeHint().width(), w->minimumSize().width() );
minw = TQMAX( minw, 16 );
int minh = TQMAX( w->minimumSizeHint().height(), w->minimumSize().height() );
minh = TQMAX( minh, 16 );
w->resize( TQMAX( minw, width ), TQMAX( minh, height ) );
}
// ------------------------------------------------------------------------
WidgetSelection::WidgetSelection( FormWindow *parent, TQPtrDict<WidgetSelection> *selDict )
: selectionDict( selDict )
{
formWindow = parent;
for ( int i = SizeHandle::LeftTop; i <= SizeHandle::Left; ++i ) {
handles.insert( i, new SizeHandle( formWindow, (SizeHandle::Direction)i, this ) );
}
hide();
}
void WidgetSelection::setWidget( TQWidget *w, bool updateDict )
{
if ( !w ) {
hide();
if ( updateDict )
selectionDict->remove( wid );
wid = 0;
return;
}
wid = w;
bool active = !wid->parentWidget() || WidgetFactory::layoutType( wid->parentWidget() ) == WidgetFactory::NoLayout;
for ( int i = SizeHandle::LeftTop; i <= SizeHandle::Left; ++i ) {
SizeHandle *h = handles[ i ];
if ( h ) {
h->setWidget( wid );
h->setActive( active );
}
}
updateGeometry();
show();
if ( updateDict )
selectionDict->insert( w, this );
}
bool WidgetSelection::isUsed() const
{
return wid != 0;
}
void WidgetSelection::updateGeometry()
{
if ( !wid )
return;
TQPoint p = wid->parentWidget()->mapToGlobal( wid->pos() );
p = formWindow->mapFromGlobal( p );
TQRect r( p, wid->size() );
int w = 6;
int h = 6;
for ( int i = SizeHandle::LeftTop; i <= SizeHandle::Left; ++i ) {
SizeHandle *hndl = handles[ i ];
if ( !hndl )
continue;
switch ( i ) {
case SizeHandle::LeftTop:
hndl->move( r.x() - w / 2, r.y() - h / 2 );
break;
case SizeHandle::Top:
hndl->move( r.x() + r.width() / 2 - w / 2, r.y() - h / 2 );
break;
case SizeHandle::RightTop:
hndl->move( r.x() + r.width() - w / 2, r.y() - h / 2 );
break;
case SizeHandle::Right:
hndl->move( r.x() + r.width() - w / 2, r.y() + r.height() / 2 - h / 2 );
break;
case SizeHandle::RightBottom:
hndl->move( r.x() + r.width() - w / 2, r.y() + r.height() - h / 2 );
break;
case SizeHandle::Bottom:
hndl->move( r.x() + r.width() / 2 - w / 2, r.y() + r.height() - h / 2 );
break;
case SizeHandle::LeftBottom:
hndl->move( r.x() - w / 2, r.y() + r.height() - h / 2 );
break;
case SizeHandle::Left:
hndl->move( r.x() - w / 2, r.y() + r.height() / 2 - h / 2 );
break;
default:
break;
}
}
}
void WidgetSelection::hide()
{
for ( int i = SizeHandle::LeftTop; i <= SizeHandle::Left; ++i ) {
SizeHandle *h = handles[ i ];
if ( h )
h->hide();
}
}
void WidgetSelection::show()
{
for ( int i = SizeHandle::LeftTop; i <= SizeHandle::Left; ++i ) {
SizeHandle *h = handles[ i ];
if ( h ) {
h->show();
h->raise();
}
}
}
void WidgetSelection::update()
{
for ( int i = SizeHandle::LeftTop; i <= SizeHandle::Left; ++i ) {
SizeHandle *h = handles[ i ];
if ( h )
h->update();
}
}
TQWidget *WidgetSelection::widget() const
{
return wid;
}
#include "sizehandle.moc"