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// 6 april 2015
#include "uipriv_windows.h"
struct window {
uiWindow w;
HWND hwnd;
uiParent *content;
BOOL shownOnce;
int (*onClosing)(uiWindow *, void *);
void *onClosingData;
int margined;
};
#define uiWindowClass L"uiWindowClass"
static LRESULT CALLBACK uiWindowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
struct window *w;
CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
WINDOWPOS *wp = (WINDOWPOS *) lParam;
RECT r;
HWND contenthwnd;
w = (struct window *) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
if (w == NULL) {
if (uMsg == WM_CREATE)
SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (cs->lpCreateParams));
// fall through to DefWindowProc() anyway
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
switch (uMsg) {
case WM_WINDOWPOSCHANGED:
if ((wp->flags & SWP_NOSIZE) != 0)
break;
// fall through
case msgUpdateChild:
if (GetClientRect(w->hwnd, &r) == 0)
logLastError("error getting window client rect for resize in uiWindowWndProc()");
contenthwnd = uiParentHWND(w->content);
if (MoveWindow(contenthwnd, r.left, r.top, r.right - r.left, r.bottom - r.top, TRUE) == 0)
logLastError("error resizing window content parent in uiWindowWndProc()");
return 0;
case WM_CLOSE:
if (!(*(w->onClosing))(w, w->onClosingData))
return 0;
break; // fall through to DefWindowProcW()
case WM_DESTROY:
// no need to free the child ourselves; it'll destroy itself after we leave this handler
uiFree(w);
break; // fall through to DefWindowProcW()
}
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
ATOM registerWindowClass(HICON hDefaultIcon, HCURSOR hDefaultCursor)
{
WNDCLASSW wc;
ZeroMemory(&wc, sizeof (WNDCLASSW));
wc.lpszClassName = uiWindowClass;
wc.lpfnWndProc = uiWindowWndProc;
wc.hInstance = hInstance;
wc.hIcon = hDefaultIcon;
wc.hCursor = hDefaultCursor;
wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
return RegisterClassW(&wc);
}
#define exstyle 0
#define style WS_OVERLAPPEDWINDOW
static int defaultOnClosing(uiWindow *w, void *data)
{
return 1;
}
static void windowDestroy(uiWindow *ww)
{
struct window *w = (struct window *) ww;
DestroyWindow(w->hwnd);
}
static uintptr_t windowHandle(uiWindow *ww)
{
struct window *w = (struct window *) ww;
return (uintptr_t) (w->hwnd);
}
static char *windowTitle(uiWindow *ww)
{
struct window *w = (struct window *) ww;
WCHAR *wtext;
char *text;
wtext = windowText(w->hwnd);
text = toUTF8(wtext);
uiFree(wtext);
return text;
}
static void windowSetTitle(uiWindow *ww, const char *text)
{
struct window *w = (struct window *) ww;
WCHAR *wtext;
wtext = toUTF16(text);
if (SetWindowTextW(w->hwnd, wtext) == 0)
logLastError("error setting window title in uiWindowSetTitle()");
uiFree(wtext);
}
static void windowShow(uiWindow *ww)
{
struct window *w = (struct window *) ww;
if (w->shownOnce) {
ShowWindow(w->hwnd, SW_SHOW);
return;
}
w->shownOnce = TRUE;
ShowWindow(w->hwnd, nCmdShow);
if (UpdateWindow(w->hwnd) == 0)
logLastError("error calling UpdateWindow() after showing uiWindow for the first time");
}
static void windowHide(uiWindow *ww)
{
struct window *w = (struct window *) ww;
ShowWindow(w->hwnd, SW_HIDE);
}
static void windowOnClosing(uiWindow *ww, int (*f)(uiWindow *, void *), void *data)
{
struct window *w = (struct window *) ww;
w->onClosing = f;
w->onClosingData = data;
}
static void windowSetChild(uiWindow *ww, uiControl *c)
{
struct window *w = (struct window *) ww;
uiParentSetChild(w->content, c);
// don't call uiParentUpdate(); instead, synthesize a resize
// otherwise, we'll have a 0x0 content area at first
SendMessageW(w->hwnd, msgUpdateChild, 0, 0);
}
static int windowMargined(uiWindow *ww)
{
struct window *w = (struct window *) ww;
return w->margined;
}
// from https://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define windowMargin 7
static void windowSetMargined(uiWindow *ww, int margined)
{
struct window *w = (struct window *) ww;
w->margined = margined;
if (w->margined)
uiParentSetMargins(w->content, windowMargin, windowMargin, windowMargin, windowMargin);
else
uiParentSetMargins(w->content, 0, 0, 0, 0);
uiParentUpdate(w->content);
}
uiWindow *uiNewWindow(const char *title, int width, int height)
{
struct window *w;
RECT adjust;
WCHAR *wtitle;
w = uiNew(struct window);
w->onClosing = defaultOnClosing;
adjust.left = 0;
adjust.top = 0;
adjust.right = width;
adjust.bottom = height;
if (AdjustWindowRectEx(&adjust, style, FALSE, exstyle) == 0)
logLastError("error getting real window coordinates in uiWindow()");
wtitle = toUTF16(title);
w->hwnd = CreateWindowExW(exstyle,
uiWindowClass, wtitle,
style,
CW_USEDEFAULT, CW_USEDEFAULT,
adjust.right - adjust.left, adjust.bottom - adjust.top,
NULL, NULL, hInstance, w);
if (w->hwnd == NULL)
logLastError("error creating window in uiWindow()");
uiFree(wtitle);
w->content = uiNewParent((uintptr_t) (w->hwnd));
uiWindow(w)->Destroy = windowDestroy;
uiWindow(w)->Handle = windowHandle;
uiWindow(w)->Title = windowTitle;
uiWindow(w)->SetTitle = windowSetTitle;
uiWindow(w)->Show = windowShow;
uiWindow(w)->Hide = windowHide;
uiWindow(w)->OnClosing = windowOnClosing;
uiWindow(w)->SetChild = windowSetChild;
uiWindow(w)->Margined = windowMargined;
uiWindow(w)->SetMargined = windowSetMargined;
return uiWindow(w);
}
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