dolphin/Externals/wxWidgets3/src/common/layout.cpp
Soren Jorvang d14efe561b Import r67258 of the wxWidgets trunk, which I expect will before
long become wxWidgets 2.9.2, which in turn is expected to be the
last 2.9 release before the 3.0 stable release.

Since the full wxWidgets distribution is rather large, I have
imported only the parts that we use, on a subdirectory basis:

art
include/wx/*.*
include/wx/aui
include/wx/cocoa
include/wx/generic
include/wx/gtk
include/wx/meta
include/wx/msw
include/wx/osx
include/wx/persist
include/wx/private
include/wx/protocol
include/wx/unix
src/aui
src/common
src/generic
src/gtk
src/msw
src/osx
src/unix


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7380 8ced0084-cf51-0410-be5f-012b33b47a6e
2011-03-20 18:05:19 +00:00

1027 lines
34 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: src/common/layout.cpp
// Purpose: Constraint layout system classes
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id: layout.cpp 58227 2009-01-19 13:55:27Z VZ $
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// =============================================================================
// declarations
// =============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_CONSTRAINTS
#include "wx/layout.h"
#ifndef WX_PRECOMP
#include "wx/window.h"
#include "wx/utils.h"
#include "wx/dialog.h"
#include "wx/msgdlg.h"
#include "wx/intl.h"
#endif
IMPLEMENT_DYNAMIC_CLASS(wxIndividualLayoutConstraint, wxObject)
IMPLEMENT_DYNAMIC_CLASS(wxLayoutConstraints, wxObject)
inline void wxGetAsIs(wxWindowBase* win, int* w, int* h)
{
#if 1
// The old way. Works for me.
win->GetSize(w, h);
#endif
#if 0
// Vadim's change. Breaks wxPython's LayoutAnchors
win->GetBestSize(w, h);
#endif
#if 0
// Proposed compromise. Doesn't work.
int sw, sh, bw, bh;
win->GetSize(&sw, &sh);
win->GetBestSize(&bw, &bh);
if (w)
*w = wxMax(sw, bw);
if (h)
*h = wxMax(sh, bh);
#endif
}
wxIndividualLayoutConstraint::wxIndividualLayoutConstraint()
{
myEdge = wxTop;
relationship = wxUnconstrained;
margin = 0;
value = 0;
percent = 0;
otherEdge = wxTop;
done = false;
otherWin = NULL;
}
void wxIndividualLayoutConstraint::Set(wxRelationship rel, wxWindowBase *otherW, wxEdge otherE, int val, int marg)
{
if (rel == wxSameAs)
{
// If Set is called by the user with wxSameAs then call SameAs to do
// it since it will actually use wxPercent instead.
SameAs(otherW, otherE, marg);
return;
}
relationship = rel;
otherWin = otherW;
otherEdge = otherE;
if ( rel == wxPercentOf )
{
percent = val;
}
else
{
value = val;
}
margin = marg;
}
void wxIndividualLayoutConstraint::LeftOf(wxWindowBase *sibling, int marg)
{
Set(wxLeftOf, sibling, wxLeft, 0, marg);
}
void wxIndividualLayoutConstraint::RightOf(wxWindowBase *sibling, int marg)
{
Set(wxRightOf, sibling, wxRight, 0, marg);
}
void wxIndividualLayoutConstraint::Above(wxWindowBase *sibling, int marg)
{
Set(wxAbove, sibling, wxTop, 0, marg);
}
void wxIndividualLayoutConstraint::Below(wxWindowBase *sibling, int marg)
{
Set(wxBelow, sibling, wxBottom, 0, marg);
}
//
// 'Same edge' alignment
//
void wxIndividualLayoutConstraint::SameAs(wxWindowBase *otherW, wxEdge edge, int marg)
{
Set(wxPercentOf, otherW, edge, 100, marg);
}
// The edge is a percentage of the other window's edge
void wxIndividualLayoutConstraint::PercentOf(wxWindowBase *otherW, wxEdge wh, int per)
{
Set(wxPercentOf, otherW, wh, per);
}
//
// Edge has absolute value
//
void wxIndividualLayoutConstraint::Absolute(int val)
{
value = val;
relationship = wxAbsolute;
}
// Reset constraint if it mentions otherWin
bool wxIndividualLayoutConstraint::ResetIfWin(wxWindowBase *otherW)
{
if (otherW == otherWin)
{
myEdge = wxTop;
relationship = wxAsIs;
margin = 0;
value = 0;
percent = 0;
otherEdge = wxTop;
otherWin = NULL;
return true;
}
return false;
}
// Try to satisfy constraint
bool wxIndividualLayoutConstraint::SatisfyConstraint(wxLayoutConstraints *constraints, wxWindowBase *win)
{
if (relationship == wxAbsolute)
{
done = true;
return true;
}
switch (myEdge)
{
case wxLeft:
{
switch (relationship)
{
case wxLeftOf:
{
// We can know this edge if: otherWin is win's
// parent, or otherWin has a satisfied constraint,
// or otherWin has no constraint.
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos - margin;
done = true;
return true;
}
else
return false;
}
case wxRightOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos + margin;
done = true;
return true;
}
else
return false;
}
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01) + margin);
done = true;
return true;
}
else
return false;
}
case wxUnconstrained:
{
// We know the left-hand edge position if we know
// the right-hand edge and we know the width; OR if
// we know the centre and the width.
if (constraints->right.GetDone() && constraints->width.GetDone())
{
value = (constraints->right.GetValue() - constraints->width.GetValue() + margin);
done = true;
return true;
}
else if (constraints->centreX.GetDone() && constraints->width.GetDone())
{
value = (int)(constraints->centreX.GetValue() - (constraints->width.GetValue()/2) + margin);
done = true;
return true;
}
else
return false;
}
case wxAsIs:
{
int y;
win->GetPosition(&value, &y);
done = true;
return true;
}
default:
break;
}
break;
}
case wxRight:
{
switch (relationship)
{
case wxLeftOf:
{
// We can know this edge if: otherWin is win's
// parent, or otherWin has a satisfied constraint,
// or otherWin has no constraint.
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos - margin;
done = true;
return true;
}
else
return false;
}
case wxRightOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos + margin;
done = true;
return true;
}
else
return false;
}
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01) - margin);
done = true;
return true;
}
else
return false;
}
case wxUnconstrained:
{
// We know the right-hand edge position if we know the
// left-hand edge and we know the width, OR if we know the
// centre edge and the width.
if (constraints->left.GetDone() && constraints->width.GetDone())
{
value = (constraints->left.GetValue() + constraints->width.GetValue() - margin);
done = true;
return true;
}
else if (constraints->centreX.GetDone() && constraints->width.GetDone())
{
value = (int)(constraints->centreX.GetValue() + (constraints->width.GetValue()/2) - margin);
done = true;
return true;
}
else
return false;
}
case wxAsIs:
{
int x, y;
int w, h;
wxGetAsIs(win, &w, &h);
win->GetPosition(&x, &y);
value = x + w;
done = true;
return true;
}
default:
break;
}
break;
}
case wxTop:
{
switch (relationship)
{
case wxAbove:
{
// We can know this edge if: otherWin is win's
// parent, or otherWin has a satisfied constraint,
// or otherWin has no constraint.
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos - margin;
done = true;
return true;
}
else
return false;
}
case wxBelow:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos + margin;
done = true;
return true;
}
else
return false;
}
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01) + margin);
done = true;
return true;
}
else
return false;
}
case wxUnconstrained:
{
// We know the top edge position if we know the bottom edge
// and we know the height; OR if we know the centre edge and
// the height.
if (constraints->bottom.GetDone() && constraints->height.GetDone())
{
value = (constraints->bottom.GetValue() - constraints->height.GetValue() + margin);
done = true;
return true;
}
else if (constraints->centreY.GetDone() && constraints->height.GetDone())
{
value = (constraints->centreY.GetValue() - (constraints->height.GetValue()/2) + margin);
done = true;
return true;
}
else
return false;
}
case wxAsIs:
{
int x;
win->GetPosition(&x, &value);
done = true;
return true;
}
default:
break;
}
break;
}
case wxBottom:
{
switch (relationship)
{
case wxAbove:
{
// We can know this edge if: otherWin is win's parent,
// or otherWin has a satisfied constraint, or
// otherWin has no constraint.
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos + margin;
done = true;
return true;
}
else
return false;
}
case wxBelow:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos - margin;
done = true;
return true;
}
else
return false;
}
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01) - margin);
done = true;
return true;
}
else
return false;
}
case wxUnconstrained:
{
// We know the bottom edge position if we know the top edge
// and we know the height; OR if we know the centre edge and
// the height.
if (constraints->top.GetDone() && constraints->height.GetDone())
{
value = (constraints->top.GetValue() + constraints->height.GetValue() - margin);
done = true;
return true;
}
else if (constraints->centreY.GetDone() && constraints->height.GetDone())
{
value = (constraints->centreY.GetValue() + (constraints->height.GetValue()/2) - margin);
done = true;
return true;
}
else
return false;
}
case wxAsIs:
{
int x, y;
int w, h;
wxGetAsIs(win, &w, &h);
win->GetPosition(&x, &y);
value = h + y;
done = true;
return true;
}
default:
break;
}
break;
}
case wxCentreX:
{
switch (relationship)
{
case wxLeftOf:
{
// We can know this edge if: otherWin is win's parent, or
// otherWin has a satisfied constraint, or otherWin has no
// constraint.
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos - margin;
done = true;
return true;
}
else
return false;
}
case wxRightOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos + margin;
done = true;
return true;
}
else
return false;
}
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01) + margin);
done = true;
return true;
}
else
return false;
}
case wxUnconstrained:
{
// We know the centre position if we know
// the left-hand edge and we know the width, OR
// the right-hand edge and the width
if (constraints->left.GetDone() && constraints->width.GetDone())
{
value = (int)(constraints->left.GetValue() + (constraints->width.GetValue()/2) + margin);
done = true;
return true;
}
else if (constraints->right.GetDone() && constraints->width.GetDone())
{
value = (int)(constraints->left.GetValue() - (constraints->width.GetValue()/2) + margin);
done = true;
return true;
}
else
return false;
}
default:
break;
}
break;
}
case wxCentreY:
{
switch (relationship)
{
case wxAbove:
{
// We can know this edge if: otherWin is win's parent,
// or otherWin has a satisfied constraint, or otherWin
// has no constraint.
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos - margin;
done = true;
return true;
}
else
return false;
}
case wxBelow:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = edgePos + margin;
done = true;
return true;
}
else
return false;
}
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01) + margin);
done = true;
return true;
}
else
return false;
}
case wxUnconstrained:
{
// We know the centre position if we know
// the top edge and we know the height, OR
// the bottom edge and the height.
if (constraints->bottom.GetDone() && constraints->height.GetDone())
{
value = (int)(constraints->bottom.GetValue() - (constraints->height.GetValue()/2) + margin);
done = true;
return true;
}
else if (constraints->top.GetDone() && constraints->height.GetDone())
{
value = (int)(constraints->top.GetValue() + (constraints->height.GetValue()/2) + margin);
done = true;
return true;
}
else
return false;
}
default:
break;
}
break;
}
case wxWidth:
{
switch (relationship)
{
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01));
done = true;
return true;
}
else
return false;
}
case wxAsIs:
{
if (win)
{
int h;
wxGetAsIs(win, &value, &h);
done = true;
return true;
}
else return false;
}
case wxUnconstrained:
{
// We know the width if we know the left edge and the right edge, OR
// if we know the left edge and the centre, OR
// if we know the right edge and the centre
if (constraints->left.GetDone() && constraints->right.GetDone())
{
value = constraints->right.GetValue() - constraints->left.GetValue();
done = true;
return true;
}
else if (constraints->centreX.GetDone() && constraints->left.GetDone())
{
value = (int)(2*(constraints->centreX.GetValue() - constraints->left.GetValue()));
done = true;
return true;
}
else if (constraints->centreX.GetDone() && constraints->right.GetDone())
{
value = (int)(2*(constraints->right.GetValue() - constraints->centreX.GetValue()));
done = true;
return true;
}
else
return false;
}
default:
break;
}
break;
}
case wxHeight:
{
switch (relationship)
{
case wxPercentOf:
{
int edgePos = GetEdge(otherEdge, win, otherWin);
if (edgePos != -1)
{
value = (int)(edgePos*(((float)percent)*0.01));
done = true;
return true;
}
else
return false;
}
case wxAsIs:
{
if (win)
{
int w;
wxGetAsIs(win, &w, &value);
done = true;
return true;
}
else return false;
}
case wxUnconstrained:
{
// We know the height if we know the top edge and the bottom edge, OR
// if we know the top edge and the centre, OR
// if we know the bottom edge and the centre
if (constraints->top.GetDone() && constraints->bottom.GetDone())
{
value = constraints->bottom.GetValue() - constraints->top.GetValue();
done = true;
return true;
}
else if (constraints->top.GetDone() && constraints->centreY.GetDone())
{
value = (int)(2*(constraints->centreY.GetValue() - constraints->top.GetValue()));
done = true;
return true;
}
else if (constraints->bottom.GetDone() && constraints->centreY.GetDone())
{
value = (int)(2*(constraints->bottom.GetValue() - constraints->centreY.GetValue()));
done = true;
return true;
}
else
return false;
}
default:
break;
}
break;
}
default:
break;
}
return false;
}
// Get the value of this edge or dimension, or if this is not determinable, -1.
int wxIndividualLayoutConstraint::GetEdge(wxEdge which,
wxWindowBase *thisWin,
wxWindowBase *other) const
{
// If the edge or dimension belongs to the parent, then we know the
// dimension is obtainable immediately. E.g. a wxExpandSizer may contain a
// button (but the button's true parent is a panel, not the sizer)
if (other->GetChildren().Find((wxWindow*)thisWin))
{
switch (which)
{
case wxLeft:
{
return 0;
}
case wxTop:
{
return 0;
}
case wxRight:
{
int w, h;
other->GetClientSizeConstraint(&w, &h);
return w;
}
case wxBottom:
{
int w, h;
other->GetClientSizeConstraint(&w, &h);
return h;
}
case wxWidth:
{
int w, h;
other->GetClientSizeConstraint(&w, &h);
return w;
}
case wxHeight:
{
int w, h;
other->GetClientSizeConstraint(&w, &h);
return h;
}
case wxCentreX:
case wxCentreY:
{
int w, h;
other->GetClientSizeConstraint(&w, &h);
if (which == wxCentreX)
return (int)(w/2);
else
return (int)(h/2);
}
default:
return -1;
}
}
switch (which)
{
case wxLeft:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->left.GetDone())
return constr->left.GetValue();
else
return -1;
}
else
{
int x, y;
other->GetPosition(&x, &y);
return x;
}
}
case wxTop:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->top.GetDone())
return constr->top.GetValue();
else
return -1;
}
else
{
int x, y;
other->GetPosition(&x, &y);
return y;
}
}
case wxRight:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->right.GetDone())
return constr->right.GetValue();
else
return -1;
}
else
{
int x, y, w, h;
other->GetPosition(&x, &y);
other->GetSize(&w, &h);
return (int)(x + w);
}
}
case wxBottom:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->bottom.GetDone())
return constr->bottom.GetValue();
else
return -1;
}
else
{
int x, y, w, h;
other->GetPosition(&x, &y);
other->GetSize(&w, &h);
return (int)(y + h);
}
}
case wxWidth:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->width.GetDone())
return constr->width.GetValue();
else
return -1;
}
else
{
int w, h;
other->GetSize(&w, &h);
return w;
}
}
case wxHeight:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->height.GetDone())
return constr->height.GetValue();
else
return -1;
}
else
{
int w, h;
other->GetSize(&w, &h);
return h;
}
}
case wxCentreX:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->centreX.GetDone())
return constr->centreX.GetValue();
else
return -1;
}
else
{
int x, y, w, h;
other->GetPosition(&x, &y);
other->GetSize(&w, &h);
return (int)(x + (w/2));
}
}
case wxCentreY:
{
wxLayoutConstraints *constr = other->GetConstraints();
// If no constraints, it means the window is not dependent
// on anything, and therefore we know its value immediately
if (constr)
{
if (constr->centreY.GetDone())
return constr->centreY.GetValue();
else
return -1;
}
else
{
int x, y, w, h;
other->GetPosition(&x, &y);
other->GetSize(&w, &h);
return (int)(y + (h/2));
}
}
default:
break;
}
return -1;
}
wxLayoutConstraints::wxLayoutConstraints()
{
left.SetEdge(wxLeft);
top.SetEdge(wxTop);
right.SetEdge(wxRight);
bottom.SetEdge(wxBottom);
centreX.SetEdge(wxCentreX);
centreY.SetEdge(wxCentreY);
width.SetEdge(wxWidth);
height.SetEdge(wxHeight);
}
bool wxLayoutConstraints::SatisfyConstraints(wxWindowBase *win, int *nChanges)
{
int noChanges = 0;
bool done = width.GetDone();
bool newDone = (done ? true : width.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = height.GetDone();
newDone = (done ? true : height.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = left.GetDone();
newDone = (done ? true : left.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = top.GetDone();
newDone = (done ? true : top.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = right.GetDone();
newDone = (done ? true : right.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = bottom.GetDone();
newDone = (done ? true : bottom.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = centreX.GetDone();
newDone = (done ? true : centreX.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
done = centreY.GetDone();
newDone = (done ? true : centreY.SatisfyConstraint(this, win));
if (newDone != done)
noChanges ++;
*nChanges = noChanges;
return AreSatisfied();
}
#endif // wxUSE_CONSTRAINTS