libui/bin.c

133 lines
3.2 KiB
C

// 27 april 2015
#include "ui.h"
#include "uipriv.h"
struct bin {
uiBin b;
void (*baseDestroy)(uiControl *);
uiControl *mainControl;
intmax_t marginLeft;
intmax_t marginTop;
intmax_t marginRight;
intmax_t marginBottom;
};
static void binDestroy(uiControl *c)
{
struct bin *b = (struct bin *) c;
// ensure clean removal by making sure the bin has no OS parent
if (uiBinHasOSParent(uiBin(b)))
complain("attempt to destroy bin %p while it has an OS parent", b);
// don't chain up to base here; we need to destroy children ourselves first
if (b->mainControl != NULL) {
uiControlSetParent(b->mainControl, NULL);
uiControlDestroy(b->mainControl);
}
// NOW we can chain up to base
(*(b->baseDestroy))(uiControl(b));
uiFree(b);
}
static void binPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
struct bin *b = (struct bin *) c;
intmax_t left, top, right, bottom;
intmax_t cwid, cht;
if (b->mainControl == NULL) {
*width = 0;
*height = 0;
return;
}
// first do margins
left = b->marginLeft;
top = b->marginTop;
right = b->marginRight;
bottom = b->marginBottom;
uiBinTranslateMargins(uiBin(b), &left, &top, &right, &bottom, d);
*width = left + right;
*height = top + bottom;
// then do the control
uiControlPreferredSize(b->mainControl, d, &cwid, &cht);
*width += cwid;
*height += cht;
}
static void binSysFunc(uiControl *c, uiControlSysFuncParams *p)
{
struct bin *b = (struct bin *) c;
if (b->mainControl != NULL)
uiControlSysFunc(b->mainControl, p);
}
static void binResizeChildren(uiContainer *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
{
struct bin *b = (struct bin *) c;
intmax_t left, top, right, bottom;
if (b->mainControl == NULL)
return;
left = b->marginLeft;
top = b->marginTop;
right = b->marginRight;
bottom = b->marginBottom;
uiBinTranslateMargins(uiBin(b), &left, &top, &right, &bottom, d);
x += left;
y += top;
width -= left + right;
height -= top + bottom;
uiControlResize(b->mainControl, x, y, width, height, d);
}
static void binSetMainControl(uiBin *bb, uiControl *mainControl)
{
struct bin *b = (struct bin *) bb;
if (b->mainControl != NULL)
uiControlSetParent(b->mainControl, NULL);
b->mainControl = mainControl;
if (b->mainControl != NULL)
uiControlSetParent(b->mainControl, uiContainer(b));
}
static void binSetMargins(uiBin *bb, intmax_t left, intmax_t top, intmax_t right, intmax_t bottom)
{
struct bin *b = (struct bin *) bb;
b->marginLeft = left;
b->marginRight = right;
b->marginTop = top;
b->marginBottom = bottom;
}
uiBin *newBin(void)
{
struct bin *b;
b = uiNew(struct bin);
uiMakeContainer(uiContainer(b));
b->baseDestroy = uiControl(b)->Destroy;
uiControl(b)->Destroy = binDestroy;
uiControl(b)->PreferredSize = binPreferredSize;
uiControl(b)->SysFunc = binSysFunc;
uiContainer(b)->ResizeChildren = binResizeChildren;
uiBin(b)->SetMainControl = binSetMainControl;
uiBin(b)->SetMargins = binSetMargins;
// these are defined by each OS's bin.c
uiBin(b)->HasOSParent = binHasOSParent;
uiBin(b)->SetOSParent = binSetOSParent;
uiBin(b)->RemoveOSParent = binRemoveOSParent;
uiBin(b)->ResizeRootAndUpdate = binResizeRootAndUpdate;
uiBin(b)->TranslateMargins = binTranslateMargins;
return uiBin(b);
}