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// 6 april 2015
#include "uipriv_windows.h"
typedef struct singleHWND singleHWND;
struct singleHWND {
HWND hwnd;
BOOL (*onWM_COMMAND)(uiControl *, WPARAM, LPARAM, LRESULT *);
BOOL (*onWM_NOTIFY)(uiControl *, WPARAM, LPARAM, LRESULT *);
void (*onWM_DESTROY)(uiControl *);
uintptr_t parent;
};
static void singleDestroy(uiControl *c)
{
singleHWND *s = (singleHWND *) (c->internal);
if (DestroyWindow(s->hwnd) == 0)
logLastError("error destroying control in singleDestroy()");
// the data structures are destroyed in the subclass procedure
}
static uintptr_t singleHandle(uiControl *c)
{
singleHWND *s = (singleHWND *) (c->internal);
return (uintptr_t) (s->hwnd);
}
static void singleSetParent(uiControl *c, uintptr_t parent)
{
singleHWND *s = (singleHWND *) (c->internal);
s->parent = parent;
if (SetParent(s->hwnd, (HWND) (s->parent)) == NULL)
logLastError("error setting control parent in singleSetParent()");
updateParent(s->parent);
}
static void singleRemoveParent(uiControl *c)
{
singleHWND *s = (singleHWND *) (c->internal);
uintptr_t oldparent;
oldparent = s->parent;
s->parent = 0;
if (SetParent(s->hwnd, initialParent) == NULL)
logLastError("error removing control parent in singleSetParent()");
updateParent(oldparent);
}
static void singleResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
{
singleHWND *s = (singleHWND *) (c->internal);
if (MoveWindow(s->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)
{
uiControl *c = (uiControl *) dwRefData;
singleHWND *s = (singleHWND *) (c->internal);
LRESULT lResult;
switch (uMsg) {
case msgCOMMAND:
if ((*(s->onWM_COMMAND))(c, wParam, lParam, &lResult) != FALSE)
return lResult;
break;
case msgNOTIFY:
if ((*(s->onWM_NOTIFY))(c, wParam, lParam, &lResult) != FALSE)
return lResult;
break;
case WM_DESTROY:
(*(s->onWM_DESTROY))(c);
uiFree(s);
uiFree(c);
break;
case WM_NCDESTROY:
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)
{
uiControl *c;
singleHWND *s;
s = uiNew(singleHWND);
s->hwnd = CreateWindowExW(p->dwExStyle,
p->lpClassName, p->lpWindowName,
p->dwStyle | WS_CHILD | WS_VISIBLE,
0, 0,
100, 100,
// TODO specify control IDs properly
initialParent, NULL, p->hInstance, NULL);
if (s->hwnd == NULL)
logLastError("error creating control in uiWindowsNewControl()");
s->onWM_COMMAND = p->onWM_COMMAND;
s->onWM_NOTIFY = p->onWM_NOTIFY;
s->onWM_DESTROY = p->onWM_DESTROY;
c = uiNew(uiControl);
c->internal = s;
c->destroy = singleDestroy;
c->handle = singleHandle;
c->setParent = singleSetParent;
c->removeParent = singleRemoveParent;
c->resize = singleResize;
if ((*fv_SetWindowSubclass)(s->hwnd, singleSubclassProc, 0, (DWORD_PTR) c) == FALSE)
logLastError("error subclassing Windows control in uiWindowsNewControl()");
return c;
}
char *uiWindowsControlText(uiControl *c)
{
singleHWND *s = (singleHWND *) (c->internal);
WCHAR *wtext;
char *text;
wtext = windowText(s->hwnd);
text = toUTF8(wtext);
uiFree(wtext);
return text;
}
void uiWindowsControlSetText(uiControl *c, const char *text)
{
singleHWND *s = (singleHWND *) (c->internal);
WCHAR *wtext;
wtext = toUTF16(text);
if (SetWindowTextW(s->hwnd, wtext) == 0)
logLastError("error setting control text in uiWindowsControlSetText()");
uiFree(wtext);
}
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