libui/new/windows/window.c

289 lines
6.9 KiB
C

// 27 april 2015
#include "uipriv_windows.h"
#define windowClass L"libui_uiWindowClass"
struct window {
uiWindow w;
HWND hwnd;
uiContainer *bin;
int hidden;
BOOL shownOnce;
int (*onClosing)(uiWindow *, void *);
void *onClosingData;
int margined;
};
static LRESULT CALLBACK windowWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
struct window *w;
CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
WINDOWPOS *wp = (WINDOWPOS *) lParam;
RECT r;
HWND binhwnd;
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_COMMAND:
// not a menu
if (lParam != 0)
break;
if (HIWORD(wParam) != 0)
break;
runMenuEvent(LOWORD(wParam), uiWindow(w));
return 0;
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()");
binhwnd = (HWND) uiControlHandle(uiControl(w->bin));
if (MoveWindow(binhwnd, r.left, r.top, r.right - r.left, r.bottom - r.top, TRUE) == 0)
logLastError("error resizing uiWindow box in windowWndProc()");
return 0;
case WM_CLOSE:
if (!(*(w->onClosing))(uiWindow(w), w->onClosingData))
uiControlDestroy(uiControl(w));
return 0; // we destroyed it already
}
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
ATOM registerWindowClass(HICON hDefaultIcon, HCURSOR hDefaultCursor)
{
WNDCLASSW wc;
ZeroMemory(&wc, sizeof (WNDCLASSW));
wc.lpszClassName = windowClass;
wc.lpfnWndProc = windowWndProc;
wc.hInstance = hInstance;
wc.hIcon = hDefaultIcon;
wc.hCursor = hDefaultCursor;
wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
return RegisterClassW(&wc);
}
static int defaultOnClosing(uiWindow *w, void *data)
{
return 1;
}
static void windowDestroy(uiControl *c)
{
struct window *w = (struct window *) c;
// first hide ourselves
ShowWindow(w->hwnd, SW_HIDE);
// now destroy the bin
// the bin has no parent, so we can just call uiControlDestroy()
uiControlDestroy(uiControl(w->bin));
// TODO menus
// now destroy ourselves
if (DestroyWindow(w->hwnd) == 0)
logLastError("error destroying uiWindow in windowDestroy()");
uiFree(w);
}
static uintptr_t windowHandle(uiControl *c)
{
struct window *w = (struct window *) c;
return (uintptr_t) (w->hwnd);
}
static void windowSetParent(uiControl *c, uiContainer *parent)
{
complain("attempt to give the uiWindow at %p a parent", c);
}
static void windowPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
complain("attempt to get the preferred size of the uiWindow at %p", c);
}
static void windowResize(uiControl *c, intmax_t x, intmax_t y, intmax_t width, intmax_t height, uiSizing *d)
{
complain("attempt to resize the uiWindow at %p", c);
}
static int windowVisible(uiControl *c)
{
struct window *w = (struct window *) c;
return !w->hidden;
}
static void windowShow(uiControl *c)
{
struct window *w = (struct window *) c;
if (w->shownOnce) {
ShowWindow(w->hwnd, SW_SHOW);
w->hidden = 0;
return;
}
w->shownOnce = TRUE;
ShowWindow(w->hwnd, nCmdShow);
if (UpdateWindow(w->hwnd) == 0)
logLastError("error calling UpdateWindow() after showing uiWindow for the first time in windowShow()");
w->hidden = 0;
}
static void windowHide(uiControl *c)
{
struct window *w = (struct window *) c;
ShowWindow(w->hwnd, SW_HIDE);
w->hidden = 1;
}
static void windowEnable(uiControl *c)
{
struct window *w = (struct window *) c;
EnableWindow(w->hwnd, TRUE);
}
static void windowDisable(uiControl *c)
{
struct window *w = (struct window *) c;
EnableWindow(w->hwnd, FALSE);
}
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 *title)
{
struct window *w = (struct window *) ww;
WCHAR *wtitle;
wtitle = toUTF16(title);
if (SetWindowTextW(w->hwnd, wtitle) == 0)
logLastError("error setting window title in uiWindowSetTitle()");
uiFree(wtitle);
}
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 *child)
{
struct window *w = (struct window *) ww;
binSetMainControl(w->bin, child);
}
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)
binSetMargins(w->bin, windowMargin, windowMargin, windowMargin, windowMargin);
else
binSetMargins(w->bin, 0, 0, 0, 0);
}
// TODO destruction blocking
uiWindow *uiNewWindow(const char *title, int width, int height, int hasMenubar)
{
struct window *w;
RECT adjust;
WCHAR *wtitle;
BOOL hasMenubarBOOL;
HMENU hmenu;
w = uiNew(struct window);
hasMenubarBOOL = FALSE;
if (hasMenubar)
hasMenubarBOOL = TRUE;
#define style WS_OVERLAPPEDWINDOW
#define exstyle 0
adjust.left = 0;
adjust.top = 0;
adjust.right = width;
adjust.bottom = height;
// TODO does not handle menu wrapping; see http://blogs.msdn.com/b/oldnewthing/archive/2003/09/11/54885.aspx
if (AdjustWindowRectEx(&adjust, style, hasMenubarBOOL, exstyle) == 0)
logLastError("error getting real window coordinates in uiNewWindow()");
wtitle = toUTF16(title);
w->hwnd = CreateWindowExW(exstyle,
windowClass, 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->bin = newBin();
binSetParent(w->bin, (uintptr_t) (w->hwnd));
if (hasMenubar) {
hmenu = makeMenubar();
if (SetMenu(w->hwnd, hmenu) == 0)
logLastError("error giving menu to window in uiNewWindow()");
}
w->onClosing = defaultOnClosing;
uiControl(w)->Destroy = windowDestroy;
uiControl(w)->Handle = windowHandle;
uiControl(w)->SetParent = windowSetParent;
uiControl(w)->PreferredSize = windowPreferredSize;
uiControl(w)->Resize = windowResize;
uiControl(w)->Visible = windowVisible;
uiControl(w)->Show = windowShow;
uiControl(w)->Hide = windowHide;
uiControl(w)->Enable = windowEnable;
uiControl(w)->Disable = windowDisable;
uiWindow(w)->Title = windowTitle;
uiWindow(w)->SetTitle = windowSetTitle;
uiWindow(w)->OnClosing = windowOnClosing;
uiWindow(w)->SetChild = windowSetChild;
uiWindow(w)->Margined = windowMargined;
uiWindow(w)->SetMargined = windowSetMargined;
return uiWindow(w);
}