RetroArch/deps/libui/windows/container.cpp
2017-08-12 19:51:39 -04:00

111 lines
3.0 KiB
C++

// 26 april 2015
#include "uipriv_windows.hpp"
// Code for the HWND of the following uiControls:
// - uiBox
// - uiRadioButtons
// - uiSpinbox
// - uiTab
// - uiForm
// - uiGrid
struct containerInit {
uiWindowsControl *c;
void (*onResize)(uiWindowsControl *);
};
static LRESULT CALLBACK containerWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
RECT r;
HDC dc;
PAINTSTRUCT ps;
CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
WINDOWPOS *wp = (WINDOWPOS *) lParam;
MINMAXINFO *mmi = (MINMAXINFO *) lParam;
struct containerInit *init;
uiWindowsControl *c;
void (*onResize)(uiWindowsControl *);
int minwid, minht;
LRESULT lResult;
if (handleParentMessages(hwnd, uMsg, wParam, lParam, &lResult) != FALSE)
return lResult;
switch (uMsg) {
case WM_CREATE:
init = (struct containerInit *) (cs->lpCreateParams);
SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (init->onResize));
SetWindowLongPtrW(hwnd, 0, (LONG_PTR) (init->c));
break; // defer to DefWindowProc()
case WM_WINDOWPOSCHANGED:
if ((wp->flags & SWP_NOSIZE) != 0)
break; // defer to DefWindowProc();
onResize = (void (*)(uiWindowsControl *)) GetWindowLongPtrW(hwnd, GWLP_USERDATA);
c = (uiWindowsControl *) GetWindowLongPtrW(hwnd, 0);
(*(onResize))(c);
return 0;
case WM_GETMINMAXINFO:
lResult = DefWindowProcW(hwnd, uMsg, wParam, lParam);
c = (uiWindowsControl *) GetWindowLongPtrW(hwnd, 0);
uiWindowsControlMinimumSize(c, &minwid, &minht);
mmi->ptMinTrackSize.x = minwid;
mmi->ptMinTrackSize.y = minht;
return lResult;
case WM_PAINT:
dc = BeginPaint(hwnd, &ps);
if (dc == NULL) {
logLastError(L"error beginning container paint");
// bail out; hope DefWindowProc() catches us
break;
}
r = ps.rcPaint;
paintContainerBackground(hwnd, dc, &r);
EndPaint(hwnd, &ps);
return 0;
// tab controls use this to draw the background of the tab area
case WM_PRINTCLIENT:
uiWindowsEnsureGetClientRect(hwnd, &r);
paintContainerBackground(hwnd, (HDC) wParam, &r);
return 0;
case WM_ERASEBKGND:
// avoid some flicker
// we draw the whole update area anyway
return 1;
}
return DefWindowProcW(hwnd, uMsg, wParam, lParam);
}
ATOM initContainer(HICON hDefaultIcon, HCURSOR hDefaultCursor)
{
WNDCLASSW wc;
ZeroMemory(&wc, sizeof (WNDCLASSW));
wc.lpszClassName = containerClass;
wc.lpfnWndProc = containerWndProc;
wc.hInstance = hInstance;
wc.hIcon = hDefaultIcon;
wc.hCursor = hDefaultCursor;
wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
wc.cbWndExtra = sizeof (void *);
return RegisterClassW(&wc);
}
void uninitContainer(void)
{
if (UnregisterClassW(containerClass, hInstance) == 0)
logLastError(L"error unregistering container window class");
}
HWND uiWindowsMakeContainer(uiWindowsControl *c, void (*onResize)(uiWindowsControl *))
{
struct containerInit init;
// TODO onResize cannot be NULL
init.c = c;
init.onResize = onResize;
return uiWindowsEnsureCreateControlHWND(WS_EX_CONTROLPARENT,
containerClass, L"",
0,
hInstance, (LPVOID) (&init),
FALSE);
}