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// 6 april 2015
#include "uipriv_windows.h"
typedef struct uiSingleHWNDControl uiSingleHWNDControl;
struct uiSingleHWNDControl {
uiControl control;
HWND hwnd;
BOOL (*onWM_COMMAND)(uiControl *, WPARAM, LPARAM, void *, LRESULT *);
BOOL (*onWM_NOTIFY)(uiControl *, WPARAM, LPARAM, void *, LRESULT *);
void *onCommandNotifyData;
void (*preferredSize)(uiControl *, int, int, LONG, intmax_t *, intmax_t *);
void *data;
};
#define S(c) ((uiSingleHWNDControl *) (c))
static void singleDestroy(uiControl *c)
{
if (DestroyWindow(S(c)->hwnd) == 0)
logLastError("error destroying control in singleDestroy()");
// the uiSingleHWNDControl is destroyed in the subclass procedure
}
static uintptr_t singleHandle(uiControl *c)
{
return (uintptr_t) (S(c)->hwnd);
}
static void singleSetParent(uiControl *c, uintptr_t parentHWND)
{
if (SetParent(S(c)->hwnd, (HWND) parentHWND) == NULL)
logLastError("error changing control parent in singleSetParent()");
}
static uiSize singlePreferredSize(uiControl *c, uiSizing *d)
{
uiSize size;
(*(S(c)->preferredSize))(c,
d->baseX, d->baseY, d->internalLeading,
&(size.width), &(size.height));
return size;
}
static void singleResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
{
if (MoveWindow(S(c)->hwnd, x, y, width, height, TRUE) == 0)
logLastError("error moving control in singleResize()");
}
static LRESULT CALLBACK singleSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
uiSingleHWNDControl *c = (uiSingleHWNDControl *) dwRefData;
LRESULT lResult;
switch (uMsg) {
case msgCOMMAND:
if ((*(c->onWM_COMMAND))((uiControl *) c, wParam, lParam, c->onCommandNotifyData, &lResult) != FALSE)
return lResult;
break;
case msgNOTIFY:
if ((*(c->onWM_NOTIFY))((uiControl *) c, wParam, lParam, c->onCommandNotifyData, &lResult) != FALSE)
return lResult;
break;
case WM_NCDESTROY:
// TODO call an onDestroy handler
uiFree(c);
if ((*fv_RemoveWindowSubclass)(hwnd, singleSubclassProc, uIdSubclass) == FALSE)
logLastError("error removing Windows control subclass in singleSubclassProc()");
break;
}
return (*fv_DefSubclassProc)(hwnd, uMsg, wParam, lParam);
}
uiControl *uiWindowsNewControl(uiWindowsNewControlParams *p)
{
uiSingleHWNDControl *c;
c = uiNew(uiSingleHWNDControl);
c->hwnd = CreateWindowExW(p->dwExStyle,
p->lpClassName, L"",
p->dwStyle | WS_CHILD | WS_VISIBLE,
0, 0,
100, 100,
// TODO specify control IDs properly
initialParent, NULL, p->hInstance, NULL);
if (c->hwnd == NULL)
logLastError("error creating control in uiWindowsNewControl()");
c->control.destroy = singleDestroy;
c->control.handle = singleHandle;
c->control.setParent = singleSetParent;
c->control.preferredSize = singlePreferredSize;
c->control.resize = singleResize;
c->onWM_COMMAND = p->onWM_COMMAND;
c->onWM_NOTIFY = p->onWM_NOTIFY;
c->onCommandNotifyData = p->onCommandNotifyData;
c->preferredSize = p->preferredSize;
c->data = p->data;
if ((*fv_SetWindowSubclass)(c->hwnd, singleSubclassProc, 0, (DWORD_PTR) c) == FALSE)
logLastError("error subclassing Windows control in uiWindowsNewControl()");
return (uiControl *) c;
}
void *uiWindowsControlData(uiControl *c)
{
return S(c)->data;
}
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