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Diffstat (limited to 'kdevdesigner/designer/layout.cpp')
| -rw-r--r-- | kdevdesigner/designer/layout.cpp | 1017 |
1 files changed, 1017 insertions, 0 deletions
diff --git a/kdevdesigner/designer/layout.cpp b/kdevdesigner/designer/layout.cpp new file mode 100644 index 00000000..2926b4f6 --- /dev/null +++ b/kdevdesigner/designer/layout.cpp @@ -0,0 +1,1017 @@ +/********************************************************************** +** Copyright (C) 2000 Trolltech AS. All rights reserved. +** +** This file is part of Qt 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. +** +** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition +** licenses may use this file in accordance with the Qt Commercial License +** Agreement provided with the Software. +** +** 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. +** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for +** information about Qt Commercial License Agreements. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + +#include "formwindow.h" +#include "layout.h" +#include <widgetdatabase.h> +#include "widgetfactory.h" + +#include <qlayout.h> +#include <qevent.h> +#include <qpainter.h> +#include <qpen.h> +#include <qbitmap.h> +#include <qsplitter.h> +#include <qvaluevector.h> +#include <qmainwindow.h> + +bool operator<( const QGuardedPtr<QWidget> &p1, const QGuardedPtr<QWidget> &p2 ) +{ + return p1.operator->() < p2.operator->(); +} + +/*! + \class Layout layout.h + \brief Baseclass for layouting widgets in the Designer + + Classes derived from this abstract base class are used for layouting + operations in the Designer. + +*/ + +/*! \a p specifies the parent of the layoutBase \a lb. The parent + might be changed in setup(). If the layoutBase is a + container, the parent and the layoutBase are the same. Also they + always have to be a widget known to the designer (e.g. in the case + of the tabwidget parent and layoutBase are the tabwidget and not the + page which actually gets laid out. For actual usage the correct + widget is found later by Layout.) + */ + +Layout::Layout( const QWidgetList &wl, QWidget *p, FormWindow *fw, QWidget *lb, bool doSetup, bool splitter ) + : widgets( wl ), parent( p ), formWindow( fw ), isBreak( !doSetup ), useSplitter( splitter ) +{ + widgets.setAutoDelete( FALSE ); + layoutBase = lb; + if ( !doSetup && layoutBase ) + oldGeometry = layoutBase->geometry(); +} + +/*! The widget list we got in the constructor might contain too much + widgets (like widgets with different parents, already laid out + widgets, etc.). Here we set up the list and so the only the "best" + widgets get laid out. +*/ + +void Layout::setup() +{ + startPoint = QPoint( 32767, 32767 ); + QValueList<QWidgetList> lists; + QWidget *lastParent = 0; + QWidgetList *lastList = 0; + QWidget *w = 0; + + // Go through all widgets of the list we got. As we can only + // layout widgets which have the same parent, we first do some + // sorting which means create a list for each parent containing + // its child here. After that we keep working on the list of + // childs which has the most entries. + // Widgets which are already laid out are thrown away here too + for ( w = widgets.first(); w; w = widgets.next() ) { + if ( w->parentWidget() && WidgetFactory::layoutType( w->parentWidget() ) != WidgetFactory::NoLayout ) + continue; + if ( lastParent != w->parentWidget() ) { + lastList = 0; + lastParent = w->parentWidget(); + QValueList<QWidgetList>::Iterator it = lists.begin(); + for ( ; it != lists.end(); ++it ) { + if ( ( *it ).first()->parentWidget() == w->parentWidget() ) + lastList = &( *it ); + } + if ( !lastList ) { + QWidgetList l; + l.setAutoDelete( FALSE ); + lists.append( l ); + lastList = &lists.last(); + } + } + lastList->append( w ); + } + + // So, now find the list with the most entries + lastList = 0; + QValueList<QWidgetList>::Iterator it = lists.begin(); + for ( ; it != lists.end(); ++it ) { + if ( !lastList || ( *it ).count() > lastList->count() ) + lastList = &( *it ); + } + + // If we found no list (because no widget did fit at all) or the + // best list has only one entry and we do not layout a container, + // we leave here. + if ( !lastList || ( lastList->count() < 2 && + ( !layoutBase || + ( !WidgetDatabase::isContainer( WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( layoutBase ) ) ) && + layoutBase != formWindow->mainContainer() ) ) + ) ) { + widgets.clear(); + startPoint = QPoint( 0, 0 ); + return; + } + + // Now we have a new and clean widget list, which makes sense + // to layout + widgets = *lastList; + // Also use the only correct parent later, so store it + parent = WidgetFactory::widgetOfContainer( widgets.first()->parentWidget() ); + // Now calculate the position where the layout-meta-widget should + // be placed and connect to widgetDestroyed() signals of the + // widgets to get informed if one gets deleted to be able to + // handle that and do not crash in this case + for ( w = widgets.first(); w; w = widgets.next() ) { + connect( w, SIGNAL( destroyed() ), + this, SLOT( widgetDestroyed() ) ); + startPoint = QPoint( QMIN( startPoint.x(), w->x() ), + QMIN( startPoint.y(), w->y() ) ); + geometries.insert( w, QRect( w->pos(), w->size() ) ); + // Change the Z-order, as saving/loading uses the Z-order for + // writing/creating widgets and this has to be the same as in + // the layout. Else saving + loading will give different results + w->raise(); + } +} + +void Layout::widgetDestroyed() +{ + if ( sender() && sender()->isWidgetType() ) + widgets.removeRef( (QWidget*)sender() ); +} + +bool Layout::prepareLayout( bool &needMove, bool &needReparent ) +{ + if ( !widgets.count() ) + return FALSE; + for ( QWidget *w = widgets.first(); w; w = widgets.next() ) + w->raise(); + needMove = !layoutBase; + needReparent = needMove || ::qt_cast<QLayoutWidget*>(layoutBase) || ::qt_cast<QSplitter*>(layoutBase); + if ( !layoutBase ) { + if ( !useSplitter ) + layoutBase = WidgetFactory::create( WidgetDatabase::idFromClassName( "QLayoutWidget" ), + WidgetFactory::containerOfWidget( parent ) ); + else + layoutBase = WidgetFactory::create( WidgetDatabase::idFromClassName( "QSplitter" ), + WidgetFactory::containerOfWidget( parent ) ); + } else { + WidgetFactory::deleteLayout( layoutBase ); + } + + return TRUE; +} + +void Layout::finishLayout( bool needMove, QLayout *layout ) +{ + if ( needMove ) + layoutBase->move( startPoint ); + QRect g( QRect( layoutBase->pos(), layoutBase->size() ) ); + if ( WidgetFactory::layoutType( layoutBase->parentWidget() ) == WidgetFactory::NoLayout && !isBreak ) + layoutBase->adjustSize(); + else if ( isBreak ) + layoutBase->setGeometry( oldGeometry ); + oldGeometry = g; + layoutBase->show(); + layout->activate(); + formWindow->insertWidget( layoutBase ); + formWindow->selectWidget( layoutBase ); + QString n = layoutBase->name(); + if ( n.find( "qt_dead_widget_" ) != -1 ) { + n.remove( 0, QString( "qt_dead_widget_" ).length() ); + layoutBase->setName( n ); + } +} + +void Layout::undoLayout() +{ + if ( !widgets.count() ) + return; + QMap<QGuardedPtr<QWidget>, QRect>::Iterator it = geometries.begin(); + for ( ; it != geometries.end(); ++it ) { + if ( !it.key() ) + continue; + it.key()->reparent( WidgetFactory::containerOfWidget( parent ), 0, ( *it ).topLeft(), it.key()->isVisibleTo( formWindow ) ); + it.key()->resize( ( *it ).size() ); + } + formWindow->selectWidget( layoutBase, FALSE ); + WidgetFactory::deleteLayout( layoutBase ); + if ( parent != layoutBase && !::qt_cast<QMainWindow*>(layoutBase) ) { + layoutBase->hide(); + QString n = layoutBase->name(); + n.prepend( "qt_dead_widget_" ); + layoutBase->setName( n ); + } else { + layoutBase->setGeometry( oldGeometry ); + } + if ( widgets.first() ) + formWindow->selectWidget( widgets.first() ); + else + formWindow->selectWidget( formWindow ); +} + +void Layout::breakLayout() +{ + QMap<QWidget*, QRect> rects; + if ( !widgets.isEmpty() ) { + QWidget *w; + for ( w = widgets.first(); w; w = widgets.next() ) + rects.insert( w, w->geometry() ); + } + WidgetFactory::deleteLayout( layoutBase ); + bool needReparent = qstrcmp( layoutBase->className(), "QLayoutWidget" ) == 0 || + qstrcmp( layoutBase->className(), "QSplitter" ) == 0 || + ( !WidgetDatabase::isContainer( WidgetDatabase::idFromClassName( WidgetFactory::classNameOf( layoutBase ) ) ) && + layoutBase != formWindow->mainContainer() ); + bool needResize = qstrcmp( layoutBase->className(), "QSplitter" ) == 0; + bool add = geometries.isEmpty(); + for ( QWidget *w = widgets.first(); w; w = widgets.next() ) { + if ( needReparent ) + w->reparent( layoutBase->parentWidget(), 0, + layoutBase->pos() + w->pos(), TRUE ); + if ( needResize ) { + QMap<QWidget*, QRect>::Iterator it = rects.find( w ); + if ( it != rects.end() ) + w->setGeometry( QRect( layoutBase->pos() + (*it).topLeft(), (*it).size() ) ); + } + if ( add ) + geometries.insert( w, QRect( w->pos(), w->size() ) ); + } + if ( needReparent ) { + layoutBase->hide(); + parent = layoutBase->parentWidget(); + QString n = layoutBase->name(); + n.prepend( "qt_dead_widget_" ); + layoutBase->setName( n ); + } else { + parent = layoutBase; + } + if ( widgets.first() && widgets.first()->isVisibleTo( formWindow ) ) + formWindow->selectWidget( widgets.first() ); + else + formWindow->selectWidget( formWindow ); +} + +class HorizontalLayoutList : public QWidgetList +{ +public: + HorizontalLayoutList( const QWidgetList &l ) + : QWidgetList( l ) {} + + int compareItems( QPtrCollection::Item item1, QPtrCollection::Item item2 ) { + QWidget *w1 = (QWidget*)item1; + QWidget *w2 = (QWidget*)item2; + if ( w1->x() == w2->x() ) + return 0; + if ( w1->x() > w2->x() ) + return 1; + return -1; + } + +}; + +HorizontalLayout::HorizontalLayout( const QWidgetList &wl, QWidget *p, FormWindow *fw, QWidget *lb, bool doSetup, bool splitter ) + : Layout( wl, p, fw, lb, doSetup, splitter ) +{ + if ( doSetup ) + setup(); +} + +void HorizontalLayout::setup() +{ + HorizontalLayoutList l( widgets ); + l.sort(); + widgets = l; + Layout::setup(); +} + +void HorizontalLayout::doLayout() +{ + bool needMove, needReparent; + if ( !prepareLayout( needMove, needReparent ) ) + return; + + QHBoxLayout *layout = (QHBoxLayout*)WidgetFactory::createLayout( layoutBase, 0, WidgetFactory::HBox ); + + for ( QWidget *w = widgets.first(); w; w = widgets.next() ) { + if ( needReparent && w->parent() != layoutBase ) + w->reparent( layoutBase, 0, QPoint( 0, 0 ), FALSE ); + if ( !useSplitter ) { + if ( qstrcmp( w->className(), "Spacer" ) == 0 ) + layout->addWidget( w, 0, ( (Spacer*)w )->alignment() ); + else + layout->addWidget( w ); + if ( ::qt_cast<QLayoutWidget*>(w) ) + ( (QLayoutWidget*)w )->updateSizePolicy(); + } + w->show(); + } + + if ( ::qt_cast<QSplitter*>(layoutBase) ) + ( (QSplitter*)layoutBase )->setOrientation( Qt::Horizontal ); + + finishLayout( needMove, layout ); +} + + + + +class VerticalLayoutList : public QWidgetList +{ +public: + VerticalLayoutList( const QWidgetList &l ) + : QWidgetList( l ) {} + + int compareItems( QPtrCollection::Item item1, QPtrCollection::Item item2 ) { + QWidget *w1 = (QWidget*)item1; + QWidget *w2 = (QWidget*)item2; + if ( w1->y() == w2->y() ) + return 0; + if ( w1->y() > w2->y() ) + return 1; + return -1; + } + +}; + +VerticalLayout::VerticalLayout( const QWidgetList &wl, QWidget *p, FormWindow *fw, QWidget *lb, bool doSetup, bool splitter ) + : Layout( wl, p, fw, lb, doSetup, splitter ) +{ + if ( doSetup ) + setup(); +} + +void VerticalLayout::setup() +{ + VerticalLayoutList l( widgets ); + l.sort(); + widgets = l; + Layout::setup(); +} + +void VerticalLayout::doLayout() +{ + bool needMove, needReparent; + if ( !prepareLayout( needMove, needReparent ) ) + return; + + QVBoxLayout *layout = (QVBoxLayout*)WidgetFactory::createLayout( layoutBase, 0, WidgetFactory::VBox ); + + for ( QWidget *w = widgets.first(); w; w = widgets.next() ) { + if ( needReparent && w->parent() != layoutBase ) + w->reparent( layoutBase, 0, QPoint( 0, 0 ), FALSE ); + if ( !useSplitter ) { + if ( qstrcmp( w->className(), "Spacer" ) == 0 ) + layout->addWidget( w, 0, ( (Spacer*)w )->alignment() ); + else + layout->addWidget( w ); + if ( ::qt_cast<QLayoutWidget*>(w) ) + ( (QLayoutWidget*)w )->updateSizePolicy(); + } + w->show(); + } + + if ( ::qt_cast<QSplitter*>(layoutBase) ) + ( (QSplitter*)layoutBase )->setOrientation( Qt::Vertical ); + + finishLayout( needMove, layout ); +} + + + + + +class Grid +{ +public: + Grid( int rows, int cols ); + ~Grid(); + + QWidget* cell( int row, int col ) const { return cells[ row * ncols + col]; } + void setCell( int row, int col, QWidget* w ) { cells[ row*ncols + col] = w; } + void setCells( QRect c, QWidget* w ) { + for ( int rows = c.bottom()-c.top(); rows >= 0; rows--) + for ( int cols = c.right()-c.left(); cols >= 0; cols--) { + setCell(c.top()+rows, c.left()+cols, w); + } + } + int numRows() const { return nrows; } + int numCols() const { return ncols; } + + void simplify(); + bool locateWidget( QWidget* w, int& row, int& col, int& rowspan, int& colspan ); + +private: + void merge(); + int countRow( int r, int c ) const; + int countCol( int r, int c ) const; + void setRow( int r, int c, QWidget* w, int count ); + void setCol( int r, int c, QWidget* w, int count ); + bool isWidgetStartCol( int c ) const; + bool isWidgetEndCol( int c ) const; + bool isWidgetStartRow( int r ) const; + bool isWidgetEndRow( int r ) const; + bool isWidgetTopLeft( int r, int c ) const; + void extendLeft(); + void extendRight(); + void extendUp(); + void extendDown(); + QWidget** cells; + bool* cols; + bool* rows; + int nrows, ncols; + +}; + +Grid::Grid( int r, int c ) + : nrows( r ), ncols( c ) +{ + cells = new QWidget*[ r * c ]; + memset( cells, 0, sizeof( cells ) * r * c ); + rows = new bool[ r ]; + cols = new bool[ c ]; + +} + +Grid::~Grid() +{ + delete [] cells; + delete [] cols; + delete [] rows; +} + +int Grid::countRow( int r, int c ) const +{ + QWidget* w = cell( r, c ); + int i = c + 1; + while ( i < ncols && cell( r, i ) == w ) + i++; + return i - c; +} + +int Grid::countCol( int r, int c ) const +{ + QWidget* w = cell( r, c ); + int i = r + 1; + while ( i < nrows && cell( i, c ) == w ) + i++; + return i - r; +} + +void Grid::setCol( int r, int c, QWidget* w, int count ) +{ + for (int i = 0; i < count; i++ ) + setCell( r + i, c, w ); +} + +void Grid::setRow( int r, int c, QWidget* w, int count ) +{ + for (int i = 0; i < count; i++ ) + setCell( r, c + i, w ); +} + +bool Grid::isWidgetStartCol( int c ) const +{ + int r; + for ( r = 0; r < nrows; r++ ) { + if ( cell( r, c ) && ( (c==0) || (cell( r, c) != cell( r, c-1) )) ) { + return TRUE; + } + } + return FALSE; +} + +bool Grid::isWidgetEndCol( int c ) const +{ + int r; + for ( r = 0; r < nrows; r++ ) { + if ( cell( r, c ) && ((c == ncols-1) || (cell( r, c) != cell( r, c+1) )) ) + return TRUE; + } + return FALSE; +} + +bool Grid::isWidgetStartRow( int r ) const +{ + int c; + for ( c = 0; c < ncols; c++ ) { + if ( cell( r, c ) && ( (r==0) || (cell( r, c) != cell( r-1, c) )) ) + return TRUE; + } + return FALSE; +} + +bool Grid::isWidgetEndRow( int r ) const +{ + int c; + for ( c = 0; c < ncols; c++ ) { + if ( cell( r, c ) && ((r == nrows-1) || (cell( r, c) != cell( r+1, c) )) ) + return TRUE; + } + return FALSE; +} + + +bool Grid::isWidgetTopLeft( int r, int c ) const +{ + QWidget* w = cell( r, c ); + if ( !w ) + return FALSE; + return ( !r || cell( r-1, c) != w ) && (!c || cell( r, c-1) != w); +} + +void Grid::extendLeft() +{ + int r,c,i; + for ( c = 1; c < ncols; c++ ) { + for ( r = 0; r < nrows; r++ ) { + QWidget* w = cell( r, c ); + if ( !w ) + continue; + int cc = countCol( r, c); + int stretch = 0; + for ( i = c-1; i >= 0; i-- ) { + if ( cell( r, i ) ) + break; + if ( countCol( r, i ) < cc ) + break; + if ( isWidgetEndCol( i ) ) + break; + if ( isWidgetStartCol( i ) ) { + stretch = c - i; + break; + } + } + if ( stretch ) { + for ( i = 0; i < stretch; i++ ) + setCol( r, c-i-1, w, cc ); + } + } + } +} + + +void Grid::extendRight() +{ + int r,c,i; + for ( c = ncols - 2; c >= 0; c-- ) { + for ( r = 0; r < nrows; r++ ) { + QWidget* w = cell( r, c ); + if ( !w ) + continue; + int cc = countCol( r, c); + int stretch = 0; + for ( i = c+1; i < ncols; i++ ) { + if ( cell( r, i ) ) + break; + if ( countCol( r, i ) < cc ) + break; + if ( isWidgetStartCol( i ) ) + break; + if ( isWidgetEndCol( i ) ) { + stretch = i - c; + break; + } + } + if ( stretch ) { + for ( i = 0; i < stretch; i++ ) + setCol( r, c+i+1, w, cc ); + } + } + } + +} + +void Grid::extendUp() +{ + int r,c,i; + for ( r = 1; r < nrows; r++ ) { + for ( c = 0; c < ncols; c++ ) { + QWidget* w = cell( r, c ); + if ( !w ) + continue; + int cr = countRow( r, c); + int stretch = 0; + for ( i = r-1; i >= 0; i-- ) { + if ( cell( i, c ) ) + break; + if ( countRow( i, c ) < cr ) + break; + if ( isWidgetEndRow( i ) ) + break; + if ( isWidgetStartRow( i ) ) { + stretch = r - i; + break; + } + } + if ( stretch ) { + for ( i = 0; i < stretch; i++ ) + setRow( r-i-1, c, w, cr ); + } + } + } +} + +void Grid::extendDown() +{ + int r,c,i; + for ( r = nrows - 2; r >= 0; r-- ) { + for ( c = 0; c < ncols; c++ ) { + QWidget* w = cell( r, c ); + if ( !w ) + continue; + int cr = countRow( r, c); + int stretch = 0; + for ( i = r+1; i < nrows; i++ ) { + if ( cell( i, c ) ) + break; + if ( countRow( i, c ) < cr ) + break; + if ( isWidgetStartRow( i ) ) + break; + if ( isWidgetEndRow( i ) ) { + stretch = i - r; + break; + } + } + if ( stretch ) { + for ( i = 0; i < stretch; i++ ) + setRow( r+i+1, c, w, cr ); + } + } + } + +} + +void Grid::simplify() +{ + extendLeft(); + extendRight(); + extendUp(); + extendDown(); + merge(); +} + + +void Grid::merge() +{ + int r,c; + for ( c = 0; c < ncols; c++ ) + cols[c] = FALSE; + + for ( r = 0; r < nrows; r++ ) + rows[r] = FALSE; + + for ( c = 0; c < ncols; c++ ) { + for ( r = 0; r < nrows; r++ ) { + if ( isWidgetTopLeft( r, c ) ) { + rows[r] = TRUE; + cols[c] = TRUE; + } + } + } +} + +bool Grid::locateWidget( QWidget* w, int& row, int& col, int& rowspan, int & colspan ) +{ + int r,c, r2, c2; + for ( c = 0; c < ncols; c++ ) { + for ( r = 0; r < nrows; r++ ) { + if ( cell( r, c ) == w ) { + row = 0; + for ( r2 = 1; r2 <= r; r2++ ) { + if ( rows[ r2-1 ] ) + row++; + } + col = 0; + for ( c2 = 1; c2 <= c; c2++ ) { + if ( cols[ c2-1 ] ) + col++; + } + rowspan = 0; + for ( r2 = r ; r2 < nrows && cell( r2, c) == w; r2++ ) { + if ( rows[ r2 ] ) + rowspan++; + } + colspan = 0; + for ( c2 = c; c2 < ncols && cell( r, c2) == w; c2++ ) { + if ( cols[ c2] ) + colspan++; + } + return TRUE; + } + } + } + return FALSE; +} + + + + +GridLayout::GridLayout( const QWidgetList &wl, QWidget *p, FormWindow *fw, QWidget *lb, const QSize &res, bool doSetup ) + : Layout( wl, p, fw, lb, doSetup ), resolution( res ) +{ + grid = 0; + if ( doSetup ) + setup(); +} + +GridLayout::~GridLayout() +{ + delete grid; +} + +void GridLayout::doLayout() +{ + bool needMove, needReparent; + if ( !prepareLayout( needMove, needReparent ) ) + return; + + QDesignerGridLayout *layout = (QDesignerGridLayout*)WidgetFactory::createLayout( layoutBase, 0, WidgetFactory::Grid ); + + if ( !grid ) + buildGrid(); + + QWidget* w; + int r, c, rs, cs; + for ( w = widgets.first(); w; w = widgets.next() ) { + if ( grid->locateWidget( w, r, c, rs, cs) ) { + if ( needReparent && w->parent() != layoutBase ) + w->reparent( layoutBase, 0, QPoint( 0, 0 ), FALSE ); + if ( rs * cs == 1 ) { + layout->addWidget( w, r, c, ::qt_cast<Spacer*>(w) ? ( (Spacer*)w )->alignment() : 0 ); + } else { + layout->addMultiCellWidget( w, r, r+rs-1, c, c+cs-1, ::qt_cast<Spacer*>(w) ? ( (Spacer*)w )->alignment() : 0 ); + } + if ( ::qt_cast<QLayoutWidget*>(w) ) + ( (QLayoutWidget*)w )->updateSizePolicy(); + w->show(); + } else { + qWarning("ooops, widget '%s' does not fit in layout", w->name() ); + } + } + finishLayout( needMove, layout ); +} + +void GridLayout::setup() +{ + Layout::setup(); + buildGrid(); +} + +void GridLayout::buildGrid() +{ + if ( !widgets.count() ) + return; + + // Pixel to cell conversion: + // By keeping a list of start'n'stop values (x & y) for each widget, + // it is possible to create a very small grid of cells to represent + // the widget layout. + // ----------------------------------------------------------------- + + // We need a list of both start and stop values for x- & y-axis + QValueVector<int> x( widgets.count()*2 ); + QValueVector<int> y( widgets.count()*2 ); + + // Using push_back would look nicer, but operator[] is much faster + int index = 0; + QWidget* w = 0; + for ( w = widgets.first(); w; w = widgets.next() ) { + QRect widgetPos = w->geometry(); + x[index] = widgetPos.left(); + x[index+1] = widgetPos.right(); + y[index] = widgetPos.top(); + y[index+1] = widgetPos.bottom(); + index += 2; + } + + qHeapSort(x); + qHeapSort(y); + + // Remove duplicate x enteries (Remove next, if equal to current) + if ( !x.empty() ) { + for (QValueVector<int>::iterator current = x.begin() ; + (current != x.end()) && ((current+1) != x.end()) ; ) + if ( (*current == *(current+1)) ) + x.erase(current+1); + else + current++; + } + + // Remove duplicate y enteries (Remove next, if equal to current) + if ( !y.empty() ) { + for (QValueVector<int>::iterator current = y.begin() ; + (current != y.end()) && ((current+1) != y.end()) ; ) + if ( (*current == *(current+1)) ) + y.erase(current+1); + else + current++; + } + + // Create the smallest grid possible to represent the current layout + // Since no widget will be placed in the last row and column, we'll + // skip them to increase speed even further + delete grid; + grid = new Grid( y.size()-1, x.size()-1 ); + + // Mark the cells in the grid that contains a widget + for ( w = widgets.first(); w; w = widgets.next() ) { + QRect c(0,0,0,0), widgetPos = w->geometry(); + // From left til right (not including) + for (uint cw=0; cw<x.size(); cw++) { + if ( x[cw] == widgetPos.left() ) + c.setLeft(cw); + if ( x[cw] < widgetPos.right()) + c.setRight(cw); + } + // From top til bottom (not including) + for (uint ch=0; ch<y.size(); ch++) { + if ( y[ch] == widgetPos.top() ) + c.setTop(ch); + if ( y[ch] < widgetPos.bottom() ) + c.setBottom(ch); + } + grid->setCells(c, w); // Mark cellblock + } + grid->simplify(); +} + + + + + + + +Spacer::Spacer( QWidget *parent, const char *name ) + : QWidget( parent, name, WMouseNoMask ), + orient( Vertical ), interactive(TRUE), sh( QSize(20,20) ) +{ + setSizeType( Expanding ); + setAutoMask( TRUE ); +} + +void Spacer::paintEvent( QPaintEvent * ) +{ + QPainter p( this ); + p.setPen( Qt::blue ); + + if ( orient == Horizontal ) { + const int dist = 3; + const int amplitude = QMIN( 3, height() / 3 ); + const int base = height() / 2; + int i = 0; + p.setPen( white ); + for ( i = 0; i < width() / 3 +2; ++i ) + p.drawLine( i * dist, base - amplitude, i * dist + dist / 2, base + amplitude ); + p.setPen( blue ); + for ( i = 0; i < width() / 3 +2; ++i ) + p.drawLine( i * dist + dist / 2, base + amplitude, i * dist + dist, base - amplitude ); + p.drawLine( 0, 0, 0, height() ); + p.drawLine( width() - 1, 0, width() - 1, height()); + } else { + const int dist = 3; + const int amplitude = QMIN( 3, width() / 3 ); + const int base = width() / 2; + int i = 0; + p.setPen( white ); + for ( i = 0; i < height() / 3 +2; ++i ) + p.drawLine( base - amplitude, i * dist, base + amplitude,i * dist + dist / 2 ); + p.setPen( blue ); + for ( i = 0; i < height() / 3 +2; ++i ) + p.drawLine( base + amplitude, i * dist + dist / 2, base - amplitude, i * dist + dist ); + p.drawLine( 0, 0, width(), 0 ); + p.drawLine( 0, height() - 1, width(), height() - 1 ); + } +} + +void Spacer::resizeEvent( QResizeEvent* e) +{ + QWidget::resizeEvent( e ); + if ( !parentWidget() || WidgetFactory::layoutType( parentWidget() ) == WidgetFactory::NoLayout ) + sh = size(); +} + +void Spacer::updateMask() +{ + QRegion r( rect() ); + if ( orient == Horizontal ) { + const int amplitude = QMIN( 3, height() / 3 ); + const int base = height() / 2; + r = r.subtract( QRect(1, 0, width() - 2, base - amplitude ) ); + r = r.subtract( QRect(1, base + amplitude, width() - 2, height() - base - amplitude ) ); + } else { + const int amplitude = QMIN( 3, width() / 3 ); + const int base = width() / 2; + r = r.subtract( QRect(0, 1, base - amplitude, height() - 2 ) ); + r = r.subtract( QRect( base + amplitude, 1, width() - base - amplitude, height() - 2 ) ); + } + setMask( r ); +} + +void Spacer::setSizeType( SizeType t ) +{ + QSizePolicy sizeP; + if ( orient == Vertical ) + sizeP = QSizePolicy( QSizePolicy::Minimum, (QSizePolicy::SizeType)t ); + else + sizeP = QSizePolicy( (QSizePolicy::SizeType)t, QSizePolicy::Minimum ); + setSizePolicy( sizeP ); +} + + +Spacer::SizeType Spacer::sizeType() const +{ + if ( orient == Vertical ) + return (SizeType)sizePolicy().verData(); + return (SizeType)sizePolicy().horData(); +} + +int Spacer::alignment() const +{ + if ( orient == Vertical ) + return AlignHCenter; + return AlignVCenter; +} + +QSize Spacer::minimumSize() const +{ + QSize s = QSize( 20,20 ); + if ( sizeType() == Expanding ) + if ( orient == Vertical ) + s.rheight() = 0; + else + s.rwidth() = 0; + return s; +} + +QSize Spacer::sizeHint() const +{ + return sh; +} + + +void Spacer::setSizeHint( const QSize &s ) +{ + sh = s; + if ( !parentWidget() || WidgetFactory::layoutType( parentWidget() ) == WidgetFactory::NoLayout ) + resize( sizeHint() ); + updateGeometry(); +} + +Qt::Orientation Spacer::orientation() const +{ + return orient; +} + +void Spacer::setOrientation( Qt::Orientation o ) +{ + if ( orient == o ) + return; + + SizeType st = sizeType(); + orient = o; + setSizeType( st ); + if ( interactive ) { + sh = QSize( sh.height(), sh.width() ); + if (!parentWidget() || WidgetFactory::layoutType( parentWidget() ) == WidgetFactory::NoLayout ) + resize( height(), width() ); + } + updateMask(); + update(); + updateGeometry(); +} + + +void QDesignerGridLayout::addWidget( QWidget *w, int row, int col, int align_ ) +{ + items.insert( w, Item(row, col, 1, 1) ); + QGridLayout::addWidget( w, row, col, align_ ); +} + +void QDesignerGridLayout::addMultiCellWidget( QWidget *w, int fromRow, int toRow, + int fromCol, int toCol, int align_ ) +{ + items.insert( w, Item(fromRow, fromCol, toRow - fromRow + 1, toCol - fromCol +1) ); + QGridLayout::addMultiCellWidget( w, fromRow, toRow, fromCol, toCol, align_ ); +} |