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// 6 april 2015
#include "ui_windows.h"
struct uiWindow {
HWND hwnd;
BOOL shownOnce;
int (*onClosing)(uiWindow *, void *);
void *onClosingData;
};
#define uiWindowClass L"uiWindowClass"
static LRESULT CALLBACK uiWindowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
uiWindow *w;
CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
w = (uiWindow *) 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_CLOSE:
if (!(*(w->onClosing))(w, w->onClosingData))
return 0;
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;
}
uiWindow *uiNewWindow(char *title, int width, int height)
{
uiWindow *w;
RECT adjust;
WCHAR *wtitle;
w = (uiWindow *) uiAlloc(sizeof (uiWindow));
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);
return w;
}
void uiWindowDestroy(uiWindow *w)
{
DestroyWindow(w->hwnd);
uiFree(w);
}
uintptr_t uiWindowHandle(uiWindow *w)
{
return (uintptr_t) (w->hwnd);
}
// TODO titles
void uiWindowShow(uiWindow *w)
{
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");
}
void uiWindowHide(uiWindow *w)
{
ShowWindow(w->hwnd, SW_HIDE);
}
void uiWindowOnClosing(uiWindow *w, int (*f)(uiWindow *, void *), void *data)
{
w->onClosing = f;
w->onClosingData = data;
}
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