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/* layout.c */
/*
* Automatic widget layout helper.
*/
#include "layout.h"
static int LastX, LastY;
static int LastWidth, LastHeight;
static int Gutter = 5;
/*
* Set gutter (space between widgets) in pixels.
*/
void LUI_LayoutGutter( int g )
{
Gutter = g;
}
int LUI_LayoutGetGutter( void )
{
return Gutter;
}
/*
* Return the value associated with the given layout symbol.
*/
int LUI_LayoutGet( int param )
{
switch (param) {
case LUI_NEXT_X:
return LastX + LastWidth + Gutter;
case LUI_NEXT_Y:
return LastY + LastHeight + Gutter;
case LUI_SAME_X:
return LastX;
case LUI_SAME_Y:
return LastY;
case LUI_SAME_W:
return LastWidth;
case LUI_SAME_H:
return LastHeight;
case LUI_LEFT:
return Gutter;
case LUI_TOP:
return Gutter;
default:
return 0;
}
}
/*
* Check if user position/size arguments specify auto placement. If so,
* compute real arguments.
*/
void LUI_LayoutCheck( int *x, int *y, int *width, int *height )
{
if (*x==LUI_NEXT_X) {
*x = LastX + LastWidth + Gutter;
}
else if (*x==LUI_SAME_X) {
*x = LastX;
}
else if (*x==LUI_LEFT) {
*x = Gutter;
}
if (*y==LUI_NEXT_Y) {
*y = LastY + LastHeight + Gutter;
}
else if (*y==LUI_SAME_Y) {
*y = LastY;
}
else if (*y==LUI_TOP) {
*y = Gutter;
}
if (*width==LUI_SAME_W) {
*width = LastWidth;
}
if (*height==LUI_SAME_H) {
*height = LastHeight;
}
LastX = *x;
LastY = *y;
LastWidth = *width;
LastHeight = *height;
}
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