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Amiga Plus 1995 #5 & #6
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Amiga Plus CD - 1995 - No. 5 and 6.iso
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gtlayout-source.lha
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LTP_ShrinkMenu.c
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C/C++ Source or Header
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1995-03-21
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2KB
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94 lines
/* GadTools layout toolkit
**
** Copyright © 1993-1995 by Olaf `Olsen' Barthel
** Freely distributable.
**
** :ts=4
*/
#include "gtlayout_global.h"
#ifdef DO_MENUS
/* LTP_ShrinkMenu(RootMenu *Root,ItemNode *First,ItemNode *Last,UWORD Mask):
*
* Rethink the widths of all menu items between First and Last, including
* both the first and the last entry.
*/
VOID __regargs
LTP_ShrinkMenu(RootMenu *Root,ItemNode *First,ItemNode *Last,UWORD Mask)
{
ItemNode *Here;
UWORD Width,MaxWidth = 0,CommandWidth = 0;
// Determine the widths of all items, also calculate
// the command widths
for(Here = First ; Here -> Node . mln_Succ ; Here = (ItemNode *)Here -> Node . mln_Succ)
{
if((Here -> Flags & ITEMF_IsSub) == Mask)
{
if(!(Here -> Flags & ITEMF_IsBar))
{
struct IntuiText *IntuiText = (struct IntuiText *)Here -> Item . ItemFill;
Width = 2 + TextLength(&Root -> RPort,IntuiText -> IText,strlen(IntuiText -> IText)) + 2;
if(Here -> Item . Flags & CHECKIT)
Width += 2 + Root -> CheckWidth;
if(Width > MaxWidth)
MaxWidth = Width;
if((Width = LTP_GetCommandWidth(Root,Here)) > CommandWidth)
CommandWidth = Width;
}
}
if(Here == Last)
break;
}
// Now adjust the widths of all objects
for(Here = First ; Here -> Node . mln_Succ ; Here = (ItemNode *)Here -> Node . mln_Succ)
{
if((Here -> Flags & ITEMF_IsSub) == Mask)
{
if(Here -> Flags & ITEMF_IsBar)
{
struct Image *Image = (struct Image *)Here -> Item . ItemFill;
Image -> Width = MaxWidth + CommandWidth - 4;
}
else
{
// Move over the submenu items if necessary
if(Here -> Item . SubItem)
{
ItemNode *Sub = (ItemNode *)((ULONG)Here -> Item . SubItem - sizeof(struct MinNode));
for(;;)
{
Sub -> Item . LeftEdge = MaxWidth + 2;
if(Sub -> Item . NextItem)
Sub = (ItemNode *)Sub -> Node . mln_Succ;
else
break;
}
}
}
Here -> Item . Width = MaxWidth + CommandWidth;
}
if(Here == Last)
break;
}
}
#endif /* DO_MENUS */