Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added wxWrapSizer (modified patch: [1826950] Wrapping Sizer) from Arne Steinarson

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50568 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2007-12-08 11:37:17 +00:00
parent a0b5751160
commit 15f7c30516
9 changed files with 615 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

461
src/common/sizer.cpp
View File

@@ -272,6 +272,73 @@ wxSize wxSizerItem::GetSize() const
return ret;
}
bool wxSizerItem::InformFirstDirection(int direction, int size, int availableOtherDir)
{
// The size that come here will be including borders. Child items should get it
// without borders.
if( size>0 )
{
if( direction==wxHORIZONTAL )
{
if (m_flag & wxWEST)
size -= m_border;
if (m_flag & wxEAST)
size -= m_border;
}
else if( direction==wxVERTICAL )
{
if (m_flag & wxNORTH)
size -= m_border;
if (m_flag & wxSOUTH)
size -= m_border;
}
}
bool didUse = false;
// Pass the information along to the held object
if (IsSizer())
{
didUse = GetSizer()->InformFirstDirection(direction,size,availableOtherDir);
if (didUse)
m_minSize = GetSizer()->CalcMin();
}
else if (IsWindow())
{
didUse = GetWindow()->InformFirstDirection(direction,size,availableOtherDir);
if (didUse)
m_minSize = m_window->GetEffectiveMinSize();
// This information is useful for items with wxSHAPED flag, since
// we can request an optimal min size for such an item. Even if
// we overwrite the m_minSize member here, we can read it back from
// the owned window (happens automatically).
if( (m_flag & wxSHAPED) && (m_flag & wxEXPAND) && direction )
{
if( !wxIsNullDouble(m_ratio) )
{
wxCHECK_MSG( (m_proportion==0), false, _T("Shaped item, non-zero proportion in wxSizerItem::InformFirstDirection()") );
if( direction==wxHORIZONTAL && !wxIsNullDouble(m_ratio) )
{
// Clip size so that we don't take too much
if( availableOtherDir>=0 && int(size/m_ratio)-m_minSize.y>availableOtherDir )
size = int((availableOtherDir+m_minSize.y)*m_ratio);
m_minSize = wxSize(size,int(size/m_ratio));
}
else if( direction==wxVERTICAL )
{
// Clip size so that we don't take too much
if( availableOtherDir>=0 && int(size*m_ratio)-m_minSize.x>availableOtherDir )
size = int((availableOtherDir+m_minSize.x)/m_ratio);
m_minSize = wxSize(int(size*m_ratio),size);
}
didUse = true;
}
}
}
return didUse;
}
wxSize wxSizerItem::CalcMin()
{
if (IsSizer())
@@ -1314,6 +1381,35 @@ wxSize wxGridSizer::CalcMin()
node = node->GetNext();
}
// In case we have a nested sizer with a two step algo , give it
// a chance to adjust to that (we give it width component)
node = m_children.GetFirst();
bool didChangeMinSize = false;
while (node)
{
wxSizerItem *item = node->GetData();
didChangeMinSize |= item->InformFirstDirection( wxHORIZONTAL, w, -1 );
node = node->GetNext();
}
// And redo iteration in case min size changed
if( didChangeMinSize )
{
node = m_children.GetFirst();
w = h = 0;
while (node)
{
wxSizerItem *item = node->GetData();
wxSize sz( item->GetMinSizeWithBorder() );
w = wxMax( w, sz.x );
h = wxMax( h, sz.y );
node = node->GetNext();
}
}
return wxSize( ncols * w + (ncols-1) * m_hgap,
nrows * h + (nrows-1) * m_vgap );
}
@@ -1456,6 +1552,45 @@ static int SumArraySizes(const wxArrayInt& sizes, int gap)
return total;
}
void wxFlexGridSizer::FindWidthsAndHeights(int nrows, int ncols)
{
// We have to recalculate the sizes in case the item minimum size has
// changed since the previous layout, or the item has been hidden using
// wxSizer::Show(). If all the items in a row/column are hidden, the final
// dimension of the row/column will be -1, indicating that the column
// itself is hidden.
m_rowHeights.assign(nrows, -1);
m_colWidths.assign(ncols, -1);
// n is the index of the item in left-to-right top-to-bottom order
size_t n = 0;
for ( wxSizerItemList::iterator i = m_children.begin();
i != m_children.end();
++i, ++n )
{
wxSizerItem * const item = *i;
if ( item->IsShown() )
{
// NOTE: Not doing the calculation here, this is just
// for finding max values.
const wxSize sz(item->GetMinSizeWithBorder());
const int row = n / ncols;
const int col = n % ncols;
if ( sz.y > m_rowHeights[row] )
m_rowHeights[row] = sz.y;
if ( sz.x > m_colWidths[col] )
m_colWidths[col] = sz.x;
}
}
AdjustForFlexDirection();
m_calculatedMinSize = wxSize(SumArraySizes(m_colWidths, m_hgap),
SumArraySizes(m_rowHeights, m_vgap));
}
wxSize wxFlexGridSizer::CalcMin()
{
int nrows,
@@ -1483,22 +1618,13 @@ wxSize wxFlexGridSizer::CalcMin()
wxSizerItem * const item = *i;
if ( item->IsShown() )
{
const wxSize sz(item->CalcMin());
const int row = n / ncols;
const int col = n % ncols;
if ( sz.y > m_rowHeights[row] )
m_rowHeights[row] = sz.y;
if ( sz.x > m_colWidths[col] )
m_colWidths[col] = sz.x;
item->CalcMin();
}
}
AdjustForFlexDirection();
m_calculatedMinSize = wxSize(SumArraySizes(m_colWidths, m_hgap),
SumArraySizes(m_rowHeights, m_vgap));
// The stage of looking for max values in each row/column has been
// made a separate function, since it's reused in AdjustForGrowables.
FindWidthsAndHeights(nrows,ncols);
return m_calculatedMinSize;
}
@@ -1616,6 +1742,47 @@ DoAdjustForGrowables(int delta,
void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz)
{
if ( (m_flexDirection & wxHORIZONTAL) || (m_growMode != wxFLEX_GROWMODE_NONE) )
{
DoAdjustForGrowables
(
sz.x - m_calculatedMinSize.x,
m_growableCols,
m_colWidths,
m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions
: NULL
);
// This gives nested objects that benefit from knowing one size
// component in advance the chance to use that.
bool didAdjustMinSize = false;
int nrows, ncols;
CalcRowsCols(nrows, ncols);
// Iterate over all items and inform about column width
size_t n = 0;
for ( wxSizerItemList::iterator i = m_children.begin();
i != m_children.end();
++i, ++n )
{
const int col = n % ncols;
didAdjustMinSize |= (*i)->InformFirstDirection(wxHORIZONTAL, m_colWidths[col], sz.y - m_calculatedMinSize.y);
}
// Only redo if info was actually used
if( didAdjustMinSize )
{
DoAdjustForGrowables
(
sz.x - m_calculatedMinSize.x,
m_growableCols,
m_colWidths,
m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions
: NULL
);
}
}
if ( (m_flexDirection & wxVERTICAL) || (m_growMode != wxFLEX_GROWMODE_NONE) )
{
// pass NULL instead of proportions if the grow mode is ALL as we
@@ -1629,18 +1796,6 @@ void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz)
: NULL
);
}
if ( (m_flexDirection & wxHORIZONTAL) || (m_growMode != wxFLEX_GROWMODE_NONE) )
{
DoAdjustForGrowables
(
sz.x - m_calculatedMinSize.x,
m_growableCols,
m_colWidths,
m_growMode == wxFLEX_GROWMODE_SPECIFIED ? &m_growableColsProportions
: NULL
);
}
}
@@ -1693,15 +1848,47 @@ void wxBoxSizer::RecalcSizes()
if ( m_children.empty() )
return;
const wxCoord totalMinorSize = SizeInMinorDir(m_size);
// the amount of free space which we should redistribute among the
// stretchable items (i.e. those with non zero proportion)
int delta = SizeInMajorDir(m_size) - SizeInMajorDir(m_minSize);
// Inform child items about the size in minor direction, that can
// change how much free space we have in major dir and how to distribute it.
int majorMinSum = 0;
for ( wxSizerItemList::const_iterator i = m_children.begin();
i != m_children.end();
++i )
{
wxSizerItem * const item = *i;
if ( !item->IsShown() )
continue;
wxSize szMinPrev = item->GetMinSizeWithBorder();
item->InformFirstDirection(m_orient^wxBOTH,totalMinorSize,delta);
wxSize szMin = item->GetMinSizeWithBorder();
int deltaChange = SizeInMajorDir(szMin-szMinPrev);
if( deltaChange )
{
// Since we passed available space along to the item, it should not
// take too much ,so delat should not become negative.
delta -= deltaChange;
}
majorMinSum += SizeInMajorDir(item->GetMinSizeWithBorder());
}
// And update our min size
SizeInMajorDir(m_minSize) = majorMinSum;
// might have a new delta now
delta = SizeInMajorDir(m_size) - SizeInMajorDir(m_minSize);
// the position at which we put the next child
wxPoint pt(m_position);
const wxCoord totalMinorSize = SizeInMinorDir(m_size);
int totalProportion = m_totalProportion;
for ( wxSizerItemList::const_iterator i = m_children.begin();
i != m_children.end();
@@ -1711,6 +1898,7 @@ void wxBoxSizer::RecalcSizes()
if ( !item->IsShown() )
continue;
#ifndef __DMC__
// DMC doesn't distinguish between
// int SizeInMajorDir(const wxSize& sz) const
@@ -1719,7 +1907,6 @@ void wxBoxSizer::RecalcSizes()
#endif
wxSize sizeThis(item->GetMinSizeWithBorder());
// adjust the size in the major direction using the proportion
wxCoord majorSize = SizeInMajorDir(sizeThis);
const int propItem = item->GetProportion();
@@ -1802,6 +1989,224 @@ wxSize wxBoxSizer::CalcMin()
return m_minSize;
}
//---------------------------------------------------------------------------
// wxWrapSizer
//---------------------------------------------------------------------------
#define wxDEFAULT_PROPORTION_LAST 1000000
// User data to hold old proportion for last item on line
// (which might be extended)
struct wxPropHolder : public wxObject
{
wxPropHolder( ) : m_item(0), m_propOld(0) { }
void Init( wxSizerItem *item, int propOld ) { m_item=item; m_propOld=propOld; }
wxSizerItem *m_item;
int m_propOld;
};
IMPLEMENT_DYNAMIC_CLASS(wxWrapSizer, wxBoxSizer);
wxWrapSizer::wxWrapSizer( int orient, int flags )
: wxBoxSizer(orient),
m_prim_size_last( -1 ),
m_rows(orient^wxBOTH),
m_flags(flags)
{
}
wxWrapSizer::~wxWrapSizer()
{
// Have to clear grand child items so that they're not deleted twice
for( int ix=m_rows.GetChildren().GetCount()-1; ix>=0; ix-- )
{
wxSizer *psz = m_rows.GetItem((size_t)ix)->GetSizer();
wxSizerItemList &sl = psz->GetChildren();
while( sl.GetLast() )
sl.Erase( sl.GetLast() );
}
}
bool wxWrapSizer::InformFirstDirection( int direction, int size, int WXUNUSED(availableOtherDir) )
{
if( !direction )
{
// Better to keep value, then CalcMin will work better
//m_prim_size_last = -1;
return false;
}
if( direction==m_orient )
{
// The direction is same as our primary, so we can make use of it
m_prim_size_last = size;
return true;
}
else
return false;
}
void wxWrapSizer::AdjustPropLastItem(wxSizer *psz, wxSizerItem *itemLast)
{
wxSizerItem *psi = m_rows.GetItem(psz);
wxASSERT(psi);
wxPropHolder *pph = (wxPropHolder*)psi->GetUserData();
if ( !pph )
psi->SetUserData( pph=new wxPropHolder );
pph->Init( itemLast, itemLast->GetProportion() );
itemLast->SetProportion( wxDEFAULT_PROPORTION_LAST );
}
void wxWrapSizer::RecalcSizes()
{
wxASSERT( m_orient&wxBOTH );
if (m_children.GetCount() == 0)
return;
// What we do here is to put our items into child box sizers,
// as many of them as we have lines.
// Empty all items in all rows in owned sizer.
// We have to access the list directly, since we don't want to
// destroy the wxSizerItems.
for( int ix=m_rows.GetChildren().GetCount()-1; ix>=0; ix-- ){
wxSizerItem *psi = m_rows.GetItem( (size_t)ix );
// Restore proportion for last item on line (if item has not been deleted)
wxPropHolder *pph = (wxPropHolder*)psi->GetUserData();
if( pph && GetChildren().Find(pph->m_item) )
pph->m_item->SetProportion(pph->m_propOld);
wxSizer *psz = psi->GetSizer();
wxASSERT( psz );
wxSizerItemList &sl = psz->GetChildren();
while( sl.GetLast() )
sl.Erase( sl.GetLast() );
}
int lineSumMajor = 0;
int majorSize = SizeInMajorDir(m_size);
// Make sure we have at least one child sizer
m_n_line = 1;
if( !m_rows.GetChildren().GetCount() )
m_rows.Add( new wxBoxSizer(GetOrientation()), 1, wxEXPAND );
// The sizer where to insert items in
wxSizer *psz = m_rows.GetItem((size_t)0)->GetSizer();
wxASSERT( psz );
// Now put our child items into child sizers instead
wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
wxSizerItem *item = NULL, *itemLast=NULL;
while (node)
{
item = node->GetData();
if ( item->IsShown() )
{
wxSize minSz = item->GetMinSize();
int minSzMajor = SizeInMajorDir(minSz);
// More space on this line?
if( !lineSumMajor || lineSumMajor+minSzMajor<=majorSize )
{
lineSumMajor += minSzMajor;
}
else
{
lineSumMajor = minSzMajor;
// Get a new empty sizer to insert into
if( (int)m_rows.GetChildren().GetCount()<=m_n_line )
m_rows.Add( new wxBoxSizer(GetOrientation()), 1, wxEXPAND );
// If we have extend-last-on-each-line mode, then do so now
// Note: We must store old proportion value then.
if( m_flags&wxEXTEND_LAST_ON_EACH_LINE )
AdjustPropLastItem(psz,itemLast);
// The sizer where to insert items in
psz = m_rows.GetItem(m_n_line++)->GetSizer();
}
itemLast = item;
psz->Add( item );
// If item is a window, it now has a pointer to the child sizer,
// which is wrong. Set it to point to us.
if( item->GetWindow() )
item->GetWindow()->SetContainingSizer( this );
}
node = node->GetNext();
}
// If we have extend-last-on-each-line mode, then do so now
if( m_flags&wxEXTEND_LAST_ON_EACH_LINE )
AdjustPropLastItem(psz,itemLast);
// If we have more sizers than lines, remove them
while( (int)m_rows.GetChildren().GetCount()>m_n_line )
m_rows.Remove( m_n_line );
// Now do layout on row sizer
m_rows.SetDimension( m_position.x, m_position.y, m_size.x, m_size.y );
// Remember this to next time (will be overridden by InformFirstDirection if used)
m_prim_size_last = SizeInMajorDir(m_size);
}
wxSize wxWrapSizer::CalcMin()
{
if (m_children.GetCount() == 0)
return wxSize();
// Algorithm for calculating min size: (assuming horizontal orientation)
// X: Max width of all members
// Y: Based on last X, calculate how many lines needed
// First time around, assume all items fits on one line
int maxMajor = 0;
int minorSum = 0;
int lineMaxMinor = 0;
int lineSumMajor = 0;
m_n_line = 0;
// precalc item minsizes and fit on lines (preliminary)
wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
while (node)
{
wxSizerItem *item = node->GetData();
if ( item->IsShown() )
{
wxSize minSz = item->CalcMin();
int szMajor = SizeInMajorDir(minSz);
int szMinor = SizeInMinorDir(minSz);
if( szMajor>maxMajor ) maxMajor = szMajor;
// More space on this line?
if( m_prim_size_last<0 || !lineSumMajor ||
lineSumMajor+szMajor<=m_prim_size_last )
{
lineSumMajor += szMajor;
if( szMinor>lineMaxMinor )
lineMaxMinor = szMinor;
}
else
{
minorSum += lineMaxMinor; // Add height of highest item on last line
m_n_line++;
lineMaxMinor = szMinor;
lineSumMajor = szMajor;
}
}
node = node->GetNext();
}
minorSum += lineMaxMinor; // Add height of highest item on last line
m_minSize = SizeFromMajorMinor(maxMajor, minorSum);
return m_minSize;
}
//---------------------------------------------------------------------------
// wxStaticBoxSizer
//---------------------------------------------------------------------------