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// 12 april 2015
#include "uipriv_windows.h"
struct tab {
struct tabPage *pages;
uintmax_t len;
uintmax_t cap;
};
struct tabPage {
uiControl *child;
};
static BOOL onWM_COMMAND(uiControl *c, WORD code, LRESULT *lResult)
{
return FALSE;
}
// we have to handle hiding and showing of tab pages ourselves
static BOOL onWM_NOTIFY(uiControl *c, NMHDR *nm, LRESULT *lResult)
{
struct tab *t = (struct tab *) (c->data);
LRESULT n;
switch (nm->code) {
case TCN_SELCHANGING:
n = SendMessageW((HWND) uiControlHandle(c), TCM_GETCURSEL, 0, 0);
if (n != (LRESULT) (-1)) // if we're changing to a real tab
uiControlContainerHide(t->pages[n].child);
*lResult = FALSE; // and allow the change
return TRUE;
case TCN_SELCHANGE:
n = SendMessageW((HWND) uiControlHandle(c), TCM_GETCURSEL, 0, 0);
if (n != (LRESULT) (-1)) { // if we're changing to a real tab
uiControlContainerShow(t->pages[n].child);
// because we only resize the current child on resize, we'll need to trigger an update here
updateParent(uiControlHandle(c));
}
*lResult = 0;
return TRUE;
}
return FALSE;
}
static void onWM_DESTROY(uiControl *c)
{
struct tab *t = (struct tab *) (c->data);
uiFree(t->pages);
uiFree(t);
}
static void preferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
// TODO
}
// common code for resizes
static void resizeTab(uiControl *c, LONG width, LONG height)
{
struct tab *t = (struct tab *) (c->data);
HWND hwnd;
LRESULT n;
RECT r, margin;
hwnd = (HWND) uiControlHandle(c);
n = SendMessageW(hwnd, TCM_GETCURSEL, 0, 0);
if (n == (LRESULT) (-1)) // no child selected; do nothing
return;
// make a rect at (0, 0) of the given window size
// this should give us the correct client coordinates
r.left = 0;
r.top = 0;
r.right = width;
r.bottom = height;
// convert to the display rectangle
SendMessageW(hwnd, TCM_ADJUSTRECT, FALSE, (LPARAM) (&r));
margin.left = 0;
margin.top = 0;
margin.right = 0;
margin.bottom = 0;
/*TODO if (w->margined) {
margin.left = windowMargin;
margin.top = windowMargin;
margin.right = windowMargin;
margin.bottom = windowMargin;
}
*/ resize(t->pages[n].child, hwnd, r, margin);
}
// and finally, because we are a container, we have to handle resizes and updates
static LRESULT CALLBACK tabSubProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
uiControl *c = (uiControl *) dwRefData;
LRESULT lResult;
WINDOWPOS *wp = (WINDOWPOS *) lParam;
RECT r;
if (sharedWndProc(hwnd, uMsg, wParam, lParam, &lResult) != FALSE)
return lResult;
switch (uMsg) {
case WM_WINDOWPOSCHANGED:
if ((wp->flags & SWP_NOSIZE) != 0)
break;
// first, let the tab control handle it
lResult = (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
// we have the window rect width as part of the WINDOWPOS; resize
resizeTab(c, wp->cx, wp->cy);
return lResult;
case msgUpdateChild:
if (GetWindowRect((HWND) uiControlHandle(c), &r) == 0)
logLastError("error getting window rect for Tab resize in tabSubProc()");
// though these are in screen coordinates, we only need the width and height
resizeTab(c, r.right - r.left, r.bottom - r.top);
return 0;
case WM_NCDESTROY:
if ((*fv_RemoveWindowSubclass)(hwnd, tabSubProc, uIdSubclass) == FALSE)
logLastError("error removing Tab resize handling subclass in tabSubProc()");
break;
}
return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
}
uiControl *uiNewTab(void)
{
uiControl *c;
struct tab *t;
uiWindowsNewControlParams p;
HWND hwnd;
p.dwExStyle = 0; // don't set WS_EX_CONTROLPARENT yet; we do that dynamically in the message loop (see main_windows.c)
p.lpClassName = WC_TABCONTROLW;
p.lpWindowName = L"";
p.dwStyle = TCS_TOOLTIPS | WS_TABSTOP;
p.hInstance = hInstance;
p.useStandardControlFont = TRUE;
p.onWM_COMMAND = onWM_COMMAND;
p.onWM_NOTIFY = onWM_NOTIFY;
p.onWM_DESTROY = onWM_DESTROY;
c = uiWindowsNewControl(&p);
c->preferredSize = preferredSize;
t = uiNew(struct tab);
c->data = t;
hwnd = (HWND) uiControlHandle(c);
if ((*fv_SetWindowSubclass)(hwnd, tabSubProc, 0, (DWORD_PTR) c) == FALSE)
logLastError("error subclassing Tab to give it its own resize handler in uiNewTab()");
return c;
}
#define tabCapGrow 32
void uiTabAddPage(uiControl *c, const char *name, uiControl *child)
{
struct tab *t = (struct tab *) (c->data);
HWND hwnd;
TCITEMW item;
LRESULT n;
WCHAR *wname;
if (t->len >= t->cap) {
t->cap += tabCapGrow;
t->pages = (struct tabPage *) uiRealloc(t->pages, t->cap * sizeof (struct tabPage), "struct tabPage[]");
}
hwnd = (HWND) uiControlHandle(c);
n = SendMessageW(hwnd, TCM_GETITEMCOUNT, 0, 0);
t->pages[t->len].child = child;
uiControlSetParent(t->pages[t->len].child, (uintptr_t) hwnd);
if (n != 0) // if this isn't the first page, we have to hide the other controls
uiControlContainerHide(t->pages[t->len].child);
t->len++;
ZeroMemory(&item, sizeof (TCITEMW));
item.mask = TCIF_TEXT;
wname = toUTF16(name);
item.pszText = wname;
// MSDN's example code uses the first invalid index directly for this
if (SendMessageW(hwnd, TCM_INSERTITEM, (WPARAM) n, (LPARAM) (&item)) == (LRESULT) -1)
logLastError("error adding tab to Tab in uiTabAddPage()");
uiFree(wname);
}
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