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comparison src/zamikongine/platform/windows/win32.nim @ 480:14e5151f68d1

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did: introduce scene graph, meshs and generic vertex buffers
author Sam <sam@basx.dev>
date Mon, 09 Jan 2023 11:04:19 +0700
parents
children 85f6b1b29c98
comparison
equal deleted inserted replaced
479:16842d15319a 480:14e5151f68d1
1 import winim
2
3 import ../../events
4
5 type
6 NativeWindow* = object
7 hinstance*: HINSTANCE
8 hwnd*: HWND
9
10 var currentEvents: seq[Event]
11
12 template checkWin32Result*(call: untyped) =
13 let value = call
14 if value != 0:
15 raise newException(Exception, "Win32 error: " & astToStr(call) & " returned " & $value)
16
17 proc WindowHandler(hwnd: HWND, uMsg: UINT, wParam: WPARAM, lParam: LPARAM): LRESULT {.stdcall.} =
18 case uMsg
19 of WM_DESTROY:
20 currentEvents.add(Event(eventType: events.EventType.Quit))
21 else:
22 return DefWindowProc(hwnd, uMsg, wParam, lParam)
23
24
25 proc createWindow*(title: string): NativeWindow =
26 result.hInstance = HINSTANCE(GetModuleHandle(nil))
27 var
28 windowClassName = T"EngineWindowClass"
29 windowName = T(title)
30 windowClass = WNDCLASSEX(
31 cbSize: UINT(WNDCLASSEX.sizeof),
32 lpfnWndProc: WindowHandler,
33 hInstance: result.hInstance,
34 lpszClassName: windowClassName,
35 )
36
37 if(RegisterClassEx(addr(windowClass)) == 0):
38 raise newException(Exception, "Unable to register window class")
39
40 result.hwnd = CreateWindowEx(
41 DWORD(0),
42 windowClassName,
43 windowName,
44 DWORD(WS_OVERLAPPEDWINDOW),
45 CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
46 HMENU(0),
47 HINSTANCE(0),
48 result.hInstance,
49 nil
50 )
51
52 discard ShowWindow(result.hwnd, 1)
53
54 proc trash*(window: NativeWindow) =
55 discard
56
57 proc size*(window: NativeWindow): (int, int) =
58 var rect: RECT
59 checkWin32Result GetWindowRect(window.hwnd, addr(rect))
60 (int(rect.right - rect.left), int(rect.bottom - rect.top))
61
62 proc pendingEvents*(window: NativeWindow): seq[Event] =
63 currentEvents = newSeq[Event]()
64 var msg: MSG
65 while PeekMessage(addr(msg), window.hwnd, 0, 0, PM_REMOVE):
66 DispatchMessage(addr(msg))
67 return currentEvents