]>
cygwin.com Git - cygwin-apps/setup.git/blob - window.cc
2 * Copyright (c) 2001, 2002, 2003 Gary R. Van Sickle.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * A copy of the GNU General Public License can be found at
12 * Written by Gary R. Van Sickle <g.r.vansickle@worldnet.att.net>
16 // This is the implementation of the Window class. It serves both as a window class
17 // in its own right and as a base class for other window-like classes (e.g. PropertyPage,
22 #include "RECTWrapper.h"
26 ATOM
Window::WindowClassAtom
= 0;
27 HINSTANCE
Window::AppInstance
= NULL
;
38 // Delete any fonts we created.
39 for (unsigned int i
= 0; i
< Fonts
.size (); i
++)
40 DeleteObject (Fonts
[i
]);
42 // shut down the tooltip control, if activated
44 DestroyWindow (TooltipHandle
);
46 // FIXME: Maybe do some reference counting and do this Unregister
47 // when there are no more of us left. Not real critical unless
48 // we're in a DLL which we're not right now.
49 //UnregisterClass(WindowClassAtom, InstanceHandle);
53 Window::FirstWindowProcReflector (HWND hwnd
, UINT uMsg
, WPARAM wParam
,
58 if(uMsg
== WM_NCCREATE
)
60 // This is the first message a window gets (so MSDN says anyway).
61 // Take this opportunity to "link" the HWND to the 'this' ptr, steering
62 // messages to the class instance's WindowProc().
63 wnd
= reinterpret_cast<Window
*>(((LPCREATESTRUCT
)lParam
)->lpCreateParams
);
65 // Set a backreference to this class instance in the HWND.
66 SetWindowLongPtr (hwnd
, GWL_USERDATA
, reinterpret_cast<LONG_PTR
>(wnd
));
68 // Set a new WindowProc now that we have the peliminaries done.
69 // We could instead simply do the contents of Window::WindowProcReflector
70 // in the 'else' clause below, but this way we eliminate an unnecessary 'if/else' on
71 // every message. Yeah, it's probably not worth the trouble.
72 SetWindowLongPtr (hwnd
, GWL_WNDPROC
, (LONG_PTR
) & Window::WindowProcReflector
);
73 // Finally, store the window handle in the class.
74 wnd
->WindowHandle
= hwnd
;
78 // Should never get here.
79 fatal(NULL
, IDS_WINDOW_INIT_BADMSG
, uMsg
);
82 return wnd
->WindowProc (uMsg
, wParam
, lParam
);
86 Window::WindowProcReflector (HWND hwnd
, UINT uMsg
, WPARAM wParam
,
91 // Get our this pointer
92 This
= reinterpret_cast<Window
*>(GetWindowLongPtr (hwnd
, GWL_USERDATA
));
94 return This
->WindowProc (uMsg
, wParam
, lParam
);
98 Window::Create (Window
* parent
, DWORD Style
)
100 // First register the window class, if we haven't already
101 if (registerWindowClass () == false)
103 // Registration failed
107 // Save our parent, we'll probably need it eventually.
110 // Create the window instance
111 WindowHandle
= CreateWindowEx (
114 "MainWindowClass", //MAKEINTATOM(WindowClassAtom), // window class atom (name)
115 "Hello", // no title-bar string yet
118 // Default positions and size
120 CW_USEDEFAULT
, CW_USEDEFAULT
, CW_USEDEFAULT
,
123 NULL
? (HWND
) NULL
: parent
->GetHWND (),
126 // The application instance
128 // The this ptr, which we'll use to set up the WindowProc reflection.
131 if (WindowHandle
== NULL
)
141 Window::registerWindowClass ()
143 if (WindowClassAtom
== 0)
145 // We're not registered yet
149 wc
.cbSize
= sizeof (wc
);
150 // Some sensible style defaults
151 wc
.style
= CS_DBLCLKS
| CS_HREDRAW
| CS_VREDRAW
;
152 // Our default window procedure. This replaces itself
153 // on the first call with the simpler Window::WindowProcReflector().
154 wc
.lpfnWndProc
= Window::FirstWindowProcReflector
;
157 // One pointer to REFLECTION_INFO in the extra window instance bytes
160 wc
.hInstance
= GetInstance ();
161 // Use a bunch of system defaults for the GUI elements
165 wc
.hbrBackground
= (HBRUSH
) (COLOR_BACKGROUND
+ 1);
167 wc
.lpszMenuName
= NULL
;
168 // We'll get a little crazy here with the class name
169 wc
.lpszClassName
= "MainWindowClass";
171 // All set, try to register
172 WindowClassAtom
= RegisterClassEx (&wc
);
174 if (WindowClassAtom
== 0)
181 // We're registered, or already were before the call,
182 // return success in either case.
187 Window::Show (int State
)
189 ::ShowWindow (WindowHandle
, State
);
193 Window::GetWindowRect() const
196 ::GetWindowRect(WindowHandle
, &retval
);
201 Window::GetClientRect() const
204 ::GetClientRect(WindowHandle
, &retval
);
209 Window::MoveWindow(long x
, long y
, long w
, long h
, bool Repaint
)
211 return ::MoveWindow (WindowHandle
, x
, y
, w
, h
, Repaint
);
215 Window::MoveWindow(const RECTWrapper
&r
, bool Repaint
)
217 return ::MoveWindow (WindowHandle
, r
.left
, r
.top
, r
.width(), r
.height(), Repaint
);
221 Window::CenterWindow ()
223 RECT WindowRect
, ParentRect
;
224 int WindowWidth
, WindowHeight
;
227 // Get the window rectangle
228 WindowRect
= GetWindowRect ();
230 if (GetParent () == NULL
)
232 // Center on desktop window
233 ::GetWindowRect (GetDesktopWindow (), &ParentRect
);
237 // Center on client area of parent
238 ::GetClientRect (GetParent ()->GetHWND (), &ParentRect
);
241 WindowWidth
= WindowRect
.right
- WindowRect
.left
;
242 WindowHeight
= WindowRect
.bottom
- WindowRect
.top
;
244 // Find center of area we're centering on
245 p
.x
= (ParentRect
.right
- ParentRect
.left
) / 2;
246 p
.y
= (ParentRect
.bottom
- ParentRect
.top
) / 2;
248 // Convert that to screen coords
249 if (GetParent () == NULL
)
251 ClientToScreen (GetDesktopWindow (), &p
);
255 ClientToScreen (GetParent ()->GetHWND (), &p
);
258 // Calculate new top left corner for window
259 p
.x
-= WindowWidth
/ 2;
260 p
.y
-= WindowHeight
/ 2;
262 // And finally move the window
263 MoveWindow (p
.x
, p
.y
, WindowWidth
, WindowHeight
);
267 Window::WindowProc (UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
269 return DefWindowProc (WindowHandle
, uMsg
, wParam
, lParam
);
273 Window::MessageLoop ()
278 while (GetMessage (&msg
, NULL
, 0, 0) != 0
279 && GetMessage (&msg
, (HWND
) NULL
, 0, 0) != -1)
281 if (!IsWindow (WindowHandle
) || !IsDialogMessage (WindowHandle
, &msg
))
283 TranslateMessage (&msg
);
284 DispatchMessage (&msg
);
292 Window::PostMessage (UINT uMsg
, WPARAM wParam
, LPARAM lParam
)
294 ::PostMessage (GetHWND (), uMsg
, wParam
, lParam
);
298 Window::IsButtonChecked (int nIDButton
) const
300 return ::IsDlgButtonChecked (GetHWND (), nIDButton
);
304 Window::SetDlgItemFont (int id
, const TCHAR
* fontname
, int Pointsize
,
305 int Weight
, bool Italic
, bool Underline
,
310 ctrl
= GetDlgItem (id
);
313 // Couldn't get that ID
317 // We need the DC for the point size calculation.
318 HDC hdc
= GetDC (ctrl
);
320 // Create the font. We have to keep it around until the dialog item
321 // goes away - basically until we're destroyed.
324 CreateFont (-MulDiv (Pointsize
, GetDeviceCaps (hdc
, LOGPIXELSY
), 72), 0,
325 0, 0, Weight
, Italic
? TRUE
: FALSE
,
326 Underline
? TRUE
: FALSE
, Strikeout
? TRUE
: FALSE
,
327 ANSI_CHARSET
, OUT_TT_PRECIS
, CLIP_DEFAULT_PRECIS
,
328 PROOF_QUALITY
, DEFAULT_PITCH
| FF_DONTCARE
, fontname
);
331 // Font creation failed
335 // Set the new font, and redraw any text which was already in the item.
336 SendMessage (ctrl
, WM_SETFONT
, (WPARAM
) hfnt
, TRUE
);
338 // Store the handle so that we can DeleteObject() it in dtor
339 Fonts
.push_back (hfnt
);
345 Window::SetWindowText (const std::string
& s
)
347 ::SetWindowText (WindowHandle
, s
.c_str ());
351 Window::ScreenToClient(const RECT
&r
) const
358 ::ScreenToClient(GetHWND(), &tl
);
361 ::ScreenToClient(GetHWND(), &br
);
374 Window::ActivateTooltips ()
375 // initialization of the tooltip capability
377 if (TooltipHandle
!= NULL
)
378 return; // already initialized
380 // create a window for the tool tips - will be invisible most of the time
381 if ((TooltipHandle
= CreateWindowEx (0, (LPCTSTR
) TOOLTIPS_CLASS
, NULL
,
382 WS_POPUP
| TTS_NOPREFIX
| TTS_ALWAYSTIP
, CW_USEDEFAULT
,
383 CW_USEDEFAULT
, CW_USEDEFAULT
, CW_USEDEFAULT
, GetHWND (),
384 (HMENU
) 0, GetInstance (), (LPVOID
) 0)) == (HWND
) NULL
)
386 log (LOG_PLAIN
) << "Warning: call to CreateWindowEx failed when "
387 "initializing tooltips. Error = %8.8x" << GetLastError ()
392 // must be topmost so that tooltips will display on top
393 SetWindowPos (TooltipHandle
, HWND_TOPMOST
, 0, 0, 0, 0,
394 SWP_NOMOVE
| SWP_NOSIZE
| SWP_NOACTIVATE
);
396 // some of our tooltips are lengthy, and will disappear before they can be
397 // read with the default windows delay, so we set a long (30s) delay here.
398 SendMessage (TooltipHandle
, TTM_SETDELAYTIME
, TTDT_AUTOPOP
,
399 (LPARAM
) MAKELONG (30000, 0));
403 Window::SetTooltipState (bool b
)
404 // enable/disable tooltips
406 SendMessage (TooltipHandle
, (UINT
)TTM_ACTIVATE
, (WPARAM
)(BOOL
)b
, 0);
410 Window::AddTooltip (HWND target
, HWND win
, const char *text
)
411 // adds a tooltip to element 'target' in window 'win'
412 // note: text is limited to 80 chars (grumble)
419 memset ((void *)&ti
, 0, sizeof(ti
));
420 ti
.cbSize
= sizeof(ti
);
422 ti
.uFlags
= TTF_IDISHWND
// add tool based on handle not ID
423 | TTF_SUBCLASS
; // tool is to subclass the window in order
424 // to automatically get mouse events
426 ti
.uId
= reinterpret_cast<UINT_PTR
>(target
);
427 ti
.lpszText
= (LPTSTR
)text
; // pointer to text or string resource
429 SendMessage (TooltipHandle
, (UINT
)TTM_ADDTOOL
, 0,
430 (LPARAM
)(LPTOOLINFO
)&ti
);
434 Window::AddTooltip (int id
, const char *text
)
435 // adds a tooltip to a control identified by its ID
439 if ((target
= GetDlgItem (id
)) != NULL
&&
440 (parent
= ::GetParent (target
)) != NULL
)
441 AddTooltip (target
, parent
, text
);
445 Window::AddTooltip (int id
, int string_resource
)
446 // adds a tooltip that's represented by a string resource
447 // this also allows for tooltips greater than 80 characters
448 // we do this by setting the lpszText to LPSTR_TEXTCALLBACK
449 // and then responding to the TTN_GETDISPINFO notification
450 // in order to do this we store a list of (control ID, string ID) pairs
452 AddTooltip (id
, (const char *)LPSTR_TEXTCALLBACK
);
453 TooltipStrings
[id
] = string_resource
;
457 Window::TooltipNotificationHandler (LPARAM lParam
)
458 // this is the handler for TTN_GETDISPINFO notifications
460 NMTTDISPINFO
*dispinfo
= (NMTTDISPINFO
*)lParam
;
462 std::map
<int, int>::iterator findID
;
464 if ((dispinfo
->uFlags
& TTF_IDISHWND
) &&
465 ((ctrlID
= GetDlgCtrlID ((HWND
)dispinfo
->hdr
.idFrom
)) != 0) &&
466 ((findID
= TooltipStrings
.find (ctrlID
)) != TooltipStrings
.end ())) {
468 // enable multiple lines
469 SendMessage(dispinfo
->hdr
.hwndFrom
, TTM_SETMAXTIPWIDTH
, 0, 450);
471 // this is quite ugly. Apparently even when using string resources
472 // the tooltip length still can't exceed 80 chars. So, we fetch the
473 // resource into our own buffer and use that
476 LoadString (GetInstance (), findID
->second
, (LPTSTR
)buf
,
477 (sizeof (buf
) / sizeof (TCHAR
)));
479 dispinfo
->lpszText
= buf
;
481 // set this flag so that the control will not ask for this again
482 dispinfo
->uFlags
|= TTF_DI_SETITEM
;
483 dispinfo
->hinst
= NULL
;
This page took 0.0559770000000001 seconds and 5 git commands to generate.