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Pop.c

/* 
A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* copyright 1998-2000 by Warren Lyford Delano of DeLano Scientific. 
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information. 
H* -------------------------------------------------------------------
I* Additional authors of this source file include:
-* 
-* 
-*
Z* -------------------------------------------------------------------
*/
#include"os_std.h"
#include"os_predef.h"
#include"Base.h"
#include"Ortho.h"
#include"Pop.h"
#include"MemoryDebug.h"

#define cPopMargin 3

struct _CPop {
  Block *Block;
};

void PopReshape(Block *I,int width, int height);

/*========================================================================*/
void PopReshape(Block *I,int width, int height)
{
  I->rect.top=height;
  I->rect.right=width;
}
/*========================================================================*/
Block *PopGetBlock(PyMOLGlobals *G)
{
  register CPop *I=G->Pop;
  {return(I->Block);}
}
/*========================================================================*/
void PopFree(PyMOLGlobals *G)
{
  register CPop *I=G->Pop;
  OrthoFreeBlock(G,I->Block);
  FreeP(G->Pop);
}
/*========================================================================*/
int PopInit(PyMOLGlobals *G)
{
  register CPop *I=NULL;
  if( (I=(G->Pop=Calloc(CPop,1)))) {
    
    I->Block = OrthoNewBlock(G,NULL);
    I->Block->fReshape = PopReshape;
    I->Block->active = false;
  
    I->Block->rect.top=10;
    I->Block->rect.bottom=0;
    I->Block->rect.left=0;
    I->Block->rect.right=10;
    
    OrthoAttach(G,I->Block,cOrthoHidden);
    return 1;
  } else 
    return 0;
}
/*========================================================================*/
void PopFitBlock(Block *block)
{
  register CPop *I=block->G->Pop;
  int delta;

  if((block->rect.bottom - cPopMargin)< (I->Block->rect.bottom)) {
    delta=(I->Block->rect.bottom - block->rect.bottom) + cPopMargin;
    block->rect.top+=delta;
    block->rect.bottom+=delta;
  }

  if((block->rect.right+cPopMargin) > (I->Block->rect.right)) {
    delta=(block->rect.right - (I->Block->rect.right))  + cPopMargin;
    block->rect.left-=delta;
    block->rect.right-=delta;
  }

  if((block->rect.left-cPopMargin) < (I->Block->rect.left)) {
    delta=(I->Block->rect.left - block->rect.left) + cPopMargin;
    block->rect.right+=delta;
    block->rect.left+=delta;
  }

  if((block->rect.top+cPopMargin) > (I->Block->rect.top)) {
    delta=(block->rect.top - (I->Block->rect.top))  + cPopMargin;
    block->rect.top-=delta;
    block->rect.bottom-=delta;
  }
}
/*========================================================================*/
int PopPlaceChild(Block *block,int left_x,int right_x,int row_y,int affinity)
{
  
  int width = block->rect.right - block->rect.left;  
  int height = block->rect.top - block->rect.bottom;
  int target_x;
  
  block->rect.top = row_y;
  block->rect.bottom = row_y - height;
  
  if(affinity>=0) {
    affinity =1;
    target_x = right_x;
    block->rect.left = target_x;
    block->rect.right = target_x + width;
  } else {
    affinity = -1;
    target_x = left_x - width;
    block->rect.left = target_x;
    block->rect.right = target_x + width;
  }
  PopFitBlock(block);
  if(affinity>=0) {
    if( block->rect.left != target_x ) {
      affinity = -1;
      target_x = left_x - width;
      block->rect.left = target_x;
      block->rect.right = target_x + width;
      PopFitBlock(block);
    }
  } else {
    if( block->rect.left != target_x ) {
      affinity = 1;
      target_x = right_x;
      block->rect.left = target_x;
      block->rect.right = target_x + width;
      PopFitBlock(block);
    }
  }
  return affinity;
}

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