libui/darwin/bin.m

119 lines
3.1 KiB
Objective-C

// 28 april 2015
#import "uipriv_darwin.h"
struct bin {
uiContainer c;
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;
NSView *v;
// ensure clean removal by making sure the bin has no OS parent
// note that:
// - the superview of a NSWindow content view is the window frame
// - the superview of *the active NSTabView page* is the NSTabView itself (we don't have to worry about other pages because if there are pages, then at least one page will be active, so we will eventually get here)
v = (NSView *) uiControlHandle(uiControl(b));
if ([v superview] != nil)
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 marginX, marginY;
if (b->mainControl == NULL) {
*width = 0;
*height = 0;
return;
}
uiControlPreferredSize(b->mainControl, d, width, height);
marginX = b->marginLeft + b->marginRight;
marginY = b->marginTop + b->marginBottom;
*width += marginX;
*height += marginY;
}
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;
if (b->mainControl == NULL)
return;
x += b->marginLeft;
y += b->marginTop;
width -= b->marginLeft + b->marginRight;
height -= b->marginTop + b->marginBottom;
uiControlResize(b->mainControl, x, y, width, height, d);
}
uiContainer *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;
return uiContainer(b);
}
void binSetMainControl(uiContainer *c, uiControl *mainControl)
{
struct bin *b = (struct bin *) c;
if (b->mainControl != NULL)
uiControlSetParent(b->mainControl, NULL);
b->mainControl = mainControl;
if (b->mainControl != NULL)
uiControlSetParent(b->mainControl, uiContainer(b));
uiContainerUpdate(uiContainer(b));
}
void binSetMargins(uiContainer *c, intmax_t left, intmax_t top, intmax_t right, intmax_t bottom)
{
struct bin *b = (struct bin *) c;
b->marginLeft = left;
b->marginRight = right;
b->marginTop = top;
b->marginBottom = bottom;
uiContainerUpdate(uiContainer(b));
}
void binSetParent(uiContainer *c, uintptr_t osParent)
{
complain("binSetParent() ineffective on OS X; specific selectors need to be called instead");
}