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tqt3/examples/demo/dnd/styledbutton.cpp

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/**********************************************************************
** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
**
** This file is part of TQt Designer.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** Licensees holding valid TQt Commercial licenses may use this file in
** accordance with the TQt Commercial License Agreement provided with
** the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "styledbutton.h"
#include <ntqcolordialog.h>
#include <ntqpalette.h>
#include <ntqlabel.h>
#include <ntqpainter.h>
#include <ntqimage.h>
#include <ntqpixmap.h>
#include <ntqapplication.h>
#include <ntqdragobject.h>
#include <ntqstyle.h>
StyledButton::StyledButton(TQWidget* parent, const char* name)
: TQButton( parent, name ), pix( 0 ), spix( 0 ), edit( ColorEditor ), s( 0 ), mousePressed( FALSE )
{
setMinimumSize( minimumSizeHint() );
setAcceptDrops( TRUE );
connect( this, SIGNAL(clicked()), SLOT(onEditor()));
}
StyledButton::StyledButton( const TQBrush& b, TQWidget* parent, const char* name, WFlags f )
: TQButton( parent, name, f ), spix( 0 ), s( 0 )
{
col = b.color();
pix = b.pixmap();
setMinimumSize( minimumSizeHint() );
}
StyledButton::~StyledButton()
{
if ( pix ) {
delete pix;
pix = 0;
}
if ( spix ) {
delete spix;
spix = 0;
}
}
void StyledButton::setEditor( EditorType e )
{
if ( edit == e )
return;
edit = e;
update();
}
StyledButton::EditorType StyledButton::editor() const
{
return edit;
}
void StyledButton::setColor( const TQColor& c )
{
col = c;
update();
}
void StyledButton::setPixmap( const TQPixmap & pm )
{
if ( !pm.isNull() ) {
delete pix;
pix = new TQPixmap( pm );
} else {
delete pix;
pix = 0;
}
scalePixmap();
}
TQColor StyledButton::color() const
{
return col;
}
TQPixmap* StyledButton::pixmap() const
{
return pix;
}
bool StyledButton::scale() const
{
return s;
}
void StyledButton::setScale( bool on )
{
if ( s == on )
return;
s = on;
scalePixmap();
}
TQSize StyledButton::sizeHint() const
{
return TQSize( 50, 25 );
}
TQSize StyledButton::minimumSizeHint() const
{
return TQSize( 50, 25 );
}
void StyledButton::scalePixmap()
{
delete spix;
if ( pix ) {
spix = new TQPixmap( 6*width()/8, 6*height()/8 );
TQImage img = pix->convertToImage();
spix->convertFromImage( s? img.smoothScale( 6*width()/8, 6*height()/8 ) : img );
} else {
spix = 0;
}
update();
}
void StyledButton::resizeEvent( TQResizeEvent* e )
{
scalePixmap();
TQButton::resizeEvent( e );
}
void StyledButton::drawButton( TQPainter *paint )
{
style().drawPrimitive(TQStyle::PE_ButtonBevel, paint, rect(), colorGroup(),
isDown() ? TQStyle::Style_Sunken : TQStyle::Style_Default);
drawButtonLabel(paint);
if (hasFocus())
style().drawPrimitive(TQStyle::PE_FocusRect, paint,
style().subRect(TQStyle::SR_PushButtonFocusRect, this),
colorGroup(), TQStyle::Style_Default);
}
void StyledButton::drawButtonLabel( TQPainter *paint )
{
TQColor pen = isEnabled() ?
hasFocus() ? palette().active().buttonText() : palette().inactive().buttonText()
: palette().disabled().buttonText();
paint->setPen( pen );
if(!isEnabled()) {
paint->setBrush( TQBrush( colorGroup().button() ) );
}
else if ( edit == PixmapEditor && spix ) {
paint->setBrush( TQBrush( col, *spix ) );
paint->setBrushOrigin( width()/8, height()/8 );
} else
paint->setBrush( TQBrush( col ) );
paint->drawRect( width()/8, height()/8, 6*width()/8, 6*height()/8 );
}
void StyledButton::onEditor()
{
switch (edit) {
case ColorEditor: {
TQColor c = TQColorDialog::getColor( palette().active().background(), this );
if ( c.isValid() ) {
setColor( c );
emit changed();
}
} break;
case PixmapEditor: {
TQPixmap p;
/*
if ( pixmap() )
p = qChoosePixmap( this,*pixmap() );
else
p = qChoosePixmap( this, TQPixmap() );
if ( !p.isNull() ) {
setPixmap( p );
emit changed();
}
*/
} break;
default:
break;
}
}
void StyledButton::mousePressEvent(TQMouseEvent* e)
{
TQButton::mousePressEvent(e);
mousePressed = TRUE;
pressPos = e->pos();
}
void StyledButton::mouseMoveEvent(TQMouseEvent* e)
{
TQButton::mouseMoveEvent( e );
#ifndef QT_NO_DRAGANDDROP
if ( !mousePressed )
return;
if ( ( pressPos - e->pos() ).manhattanLength() > TQApplication::startDragDistance() ) {
if ( edit == ColorEditor ) {
TQColorDrag *drg = new TQColorDrag( col, this );
TQPixmap pix( 25, 25 );
pix.fill( col );
TQPainter p( &pix );
p.drawRect( 0, 0, pix.width(), pix.height() );
p.end();
drg->setPixmap( pix );
mousePressed = FALSE;
drg->dragCopy();
}
else if ( edit == PixmapEditor && pix && !pix->isNull() ) {
TQImage img = pix->convertToImage();
TQImageDrag *drg = new TQImageDrag( img, this );
if(spix)
drg->setPixmap( *spix );
mousePressed = FALSE;
drg->dragCopy();
}
}
#endif
}
#ifndef QT_NO_DRAGANDDROP
void StyledButton::dragEnterEvent( TQDragEnterEvent *e )
{
setFocus();
if ( edit == ColorEditor && TQColorDrag::canDecode( e ) )
e->accept();
else if ( edit == PixmapEditor && TQImageDrag::canDecode( e ) )
e->accept();
else
e->ignore();
}
void StyledButton::dragLeaveEvent( TQDragLeaveEvent * )
{
if ( hasFocus() )
parentWidget()->setFocus();
}
void StyledButton::dragMoveEvent( TQDragMoveEvent *e )
{
if ( edit == ColorEditor && TQColorDrag::canDecode( e ) )
e->accept();
else if ( edit == PixmapEditor && TQImageDrag::canDecode( e ) )
e->accept();
else
e->ignore();
}
void StyledButton::dropEvent( TQDropEvent *e )
{
if ( edit == ColorEditor && TQColorDrag::canDecode( e ) ) {
TQColor color;
TQColorDrag::decode( e, color );
setColor(color);
emit changed();
e->accept();
}
else if ( edit == PixmapEditor && TQImageDrag::canDecode( e ) ) {
TQImage img;
TQImageDrag::decode( e, img );
TQPixmap pm;
pm.convertFromImage(img);
setPixmap(pm);
emit changed();
e->accept();
} else {
e->ignore();
}
}
#endif // QT_NO_DRAGANDDROP