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/*
Copyright (C) Aleksandras Gluchovas
CS port by Norman Krmer <norman@users.sourceforge.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __BORDERLAYOUT_G__
#define __BORDERLAYOUT_G__
#include "cslayout.h"
/**
* Displays upto 5 components. They are located in the north, south,
* west, east and center of the canvas.
*
* Sample:
* <p>
* <code>
* csWindow *wnd = new csWindow (theApp, "BorderLayout",
* CSWS_DEFAULTVALUE & ~CSWS_MENUBAR);
* wnd->SetSize (400, 300);
* wnd->Center ();
* wnd->Select ();
*
* csBorderLayout *border = new csFlowLayout (wnd);
* wnd->SendCommand (cscmdWindowSetClient, (void*)border);
*
* csBorderConstraint *blc[5] = {csBorderLayout::CENTER,
* csBorderLayout::EAST,
* csBorderLayout::NORTH,
* csBorderLayout::WEST,
* csBorderLayout::SOUTH};
* for (int k=0; k<5; k++)
* {
* border->c = *blc[k];
* csButton *b= new csButton (border, 7000+k);
* b->SetPos ((9+k)*10, 20);
* b->SetSuggestedSize (0, 0);
* char text[20];
* sprintf (text, "Test %d", k);
* b->SetText (text);
* }
* </code>
* </p>
*/
/**
* This subclass of csLayoutConstraint additionally stores the location
* of the attached control.
*/
class csBorderConstraint : public csLayoutConstraint
{
public:
int mAlign;
public:
/**
* use the following values for aligning
* 0 ... center
* 1 ... left
* 2 ... top
* 3 ... bottom
* 4 ... right
*/
csBorderConstraint (int align): mAlign( align ) {}
/// copy constructor
csBorderConstraint (const csBorderConstraint &c) :
csLayoutConstraint (c.comp)
{ mAlign = c.mAlign; }
virtual csLayoutConstraint *Clone ();
};
class csBorderLayout : public csLayout2
{
public:
csBorderLayout (csComponent *pParent);
/**
* Make sure there is at least a horizontal gap of hgap pixels
* and a vertical gap of vgap pixels.
*/
csBorderLayout (csComponent *pParent, int hgap, int vgap);
~csBorderLayout();
/**
* A components is added to a layout by creating it and passing
* the layout component as its parent component.
* If you insist of doing some voodoo you should use AddLayoutComponent
* to add it to the layout.
* <pre>
* IN: the component to add
* OUT: the constraint that is used to layout the component
* (a copy of variable c see above)
* </pre>
*/
virtual csLayoutConstraint *AddLayoutComponent (csComponent* comp);
/// remove a component from the layout
virtual void RemoveLayoutComponent (csComponent* comp);
virtual void SuggestSize (int &w, int &h);
/// recalc positions and sizes of components
virtual void LayoutContainer ();
virtual void MaximumLayoutSize (int &w, int &h);
virtual float GetLayoutAlignmentX ();
virtual float GetLayoutAlignmentY ();
public:
csBorderConstraint c;
/// for your convenience here are prebuild constraints
CS_DECLARE_STATIC_CLASSVAR (CENTER, GetCenter, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (EAST, GetEast, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (NORTH, GetNorth, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (SOUTH, GetSouth, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (WEST, GetWest, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (AFTER_LAST_LINE, GetAfterLastLine, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (AFTER_LINE_ENDS, GetAfterLineEnds, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (BEFORE_FIRST_LINE, GetBeforeFirstLine, csBorderConstraint)
CS_DECLARE_STATIC_CLASSVAR (BEFORE_LINE_BEGINS, GetBeforeLineBegins, csBorderConstraint)
protected:
enum ALIGNMENT_ENUM_INTERNAL
{
_CENTER = 0,
_EAST = 1,
_NORTH = 2,
_SOUTH = 3,
_WEST = 4,
// for Western, top-to-bottom, left-to-right orientations
_AFTER_LAST_LINE = _SOUTH,
_AFTER_LINE_ENDS = _EAST,
_BEFORE_FIRST_LINE = _NORTH,
_BEFORE_LINE_BEGINS = _WEST
};
protected:
void DistributeSizes( int& left, int& center,
int& right, int totalWidth, int gap,
bool hasLeft, bool hasCenter, bool hasRight );
int GetWidthSum( int left, int center, int right, int gap,
bool hasLeft, bool hasCenter, bool hasRight );
int Hgap (csComponent* pComp);
int Vgap (csComponent* pComp);
protected:
int mHgap;
int mVgap;
};
#endif // __BORDERLAYOUT_G__
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