6223c290ef
git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@7021 212acab6-be3b-0410-9dea-997c60f758d6
271 lines
9.4 KiB
C++
271 lines
9.4 KiB
C++
// Copyright (C) 2018 Anders Kjersem
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//
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// This file is a part of NSIS.
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//
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// Licensed under the zlib/libpng license (the "License");
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// you may not use this file except in compliance with the License.
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//
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// Licence details can be found in the file COPYING.
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//
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// This software is provided 'as-is', without any express or implied
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// warranty.
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#include "makensisw.h"
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#include <windows.h>
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#include <windowsx.h>
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#include "utils.h"
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#include "resource.h"
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static FARPROC GetModProc(LPCSTR Mod, LPCSTR Func) { return GetProcAddress(LoadLibraryA(Mod), Func); }
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#define InitializeApiFuncWithFallback(mn, fn) { FARPROC f = GetModProc((mn), (#fn)); g_##fn = Compat_##fn; if (f) (FARPROC&) g_##fn = f; }
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#define InitializeApiFunc(mn, fn) ( (FARPROC&)(g_##fn) = GetModProc((mn), (#fn)) )
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#define CallApiFunc(fn) ( g_##fn )
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#define HasApiFunc(fn) ( !!(g_##fn) )
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INT_PTR(WINAPI*g_SetThreadDpiAwarenessContext)(INT_PTR);
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UINT(WINAPI*g_GetDpiForWindow)(HWND);
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typedef struct _DPI {
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enum { a_invalid = -1, a_unaware = 0, a_system = 1, a_pm = 2 };
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enum { ac_invalid = 0, ac_unaware = -1, ac_system = -2, ac_pm1 = -3, ac_pm2 = -4 };
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static inline INT_PTR SetThreadDpiAwarenessContext(INT_PTR a1) { return g_SetThreadDpiAwarenessContext(a1); }
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static inline UINT GetDpiForWindow(HWND a1) { return HasApiFunc(GetDpiForWindow) ? CallApiFunc(GetDpiForWindow)(a1) : 0; }
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} DPI;
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static INT_PTR WINAPI Compat_SetThreadDpiAwarenessContext(INT_PTR AC)
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{
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return 0;
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}
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static void InitializeDpiApi()
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{
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InitializeApiFuncWithFallback("USER32", SetThreadDpiAwarenessContext);
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InitializeApiFunc("USER32", GetDpiForWindow);
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}
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static HWND GetParentWindow(HWND hWnd)
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{
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HWND hParent = GetAncestor(hWnd, GA_PARENT); // Parent but NOT owner.
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return hParent == GetParent(hWnd) ? hParent : NULL; // Filter away GetDesktopWindow().
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}
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typedef struct _DIALOGDATA {
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BOOL Dragging;
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HWND hWndTarget;
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int DialogAwarenessContext;
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static struct _DIALOGDATA* Get(HWND hDlg) { return (struct _DIALOGDATA*) GetWindowLongPtr(hDlg, DWLP_USER); }
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} DIALOGDATA;
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typedef struct {
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HWND hWnd;
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POINT pt;
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ULONG Area;
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bool IncludeHidden;
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void Init(POINT pt, bool IncludeHidden) { Area = 0, Area = ~Area, this->pt = pt, this->IncludeHidden = IncludeHidden; }
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} FINDCHILDDATA;
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static BOOL CALLBACK FindChildWindowFromPointProc(HWND hWnd, LPARAM LParam)
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{
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RECT r;
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FINDCHILDDATA*pFCD = (FINDCHILDDATA*) LParam;
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if (GetWindowRect(hWnd, &r) && PtInRect(&r, pFCD->pt)) // TODO: Region?
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{
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ULONG area = (r.right - r.left) * (r.bottom - r.top);
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if (area < pFCD->Area && (pFCD->IncludeHidden || IsWindowVisible(hWnd)))
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pFCD->Area = area, pFCD->hWnd = hWnd;
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}
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return TRUE;
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}
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static HWND FindChildWindowFromPoint(HWND hWnd, FINDCHILDDATA*pFCD)
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{
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HWND hParent = GetParentWindow(hWnd), hOrg;
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if (!hParent)
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hParent = hWnd;
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recurse:
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hOrg = pFCD->hWnd = hWnd;
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EnumChildWindows(hParent, FindChildWindowFromPointProc, (LPARAM) pFCD);
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if (hOrg && hOrg != pFCD->hWnd)
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{
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hWnd = hParent = pFCD->hWnd;
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goto recurse;
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}
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return pFCD->hWnd;
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}
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static HWND GetChildWindowFromPointHelper(POINT pt)
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{
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const bool includeHidden = false;
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HWND hWnd = WindowFromPoint(pt), hWnd2;
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if (!hWnd)
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return hWnd;
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while(!includeHidden && hWnd && !IsWindowVisible(hWnd))
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if ((hWnd2 = GetParentWindow(hWnd)))
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hWnd = hWnd2;
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FINDCHILDDATA fcd;
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fcd.Init(pt, includeHidden);
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hWnd = FindChildWindowFromPoint(hWnd, &fcd);
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return hWnd;
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}
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#if defined(__MINGW32_MAJOR_VERSION) && !defined(__MINGW64_VERSION_MAJOR) && (!defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500))
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WINUSERAPI BOOL WINAPI IsHungAppWindow(HWND); // MinGW is wrong, IsHungAppWindow was added in WinNT4. MinGW < 3.20? does not even have it in their .lib!
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#endif
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static BOOL IsHung(HWND hWnd)
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{
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#if !(defined(__MINGW32_MAJOR_VERSION) && !defined(__MINGW64_VERSION_MAJOR) && (__MINGW64_VERSION_MAJOR <= 15))
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if (sizeof(void*) > 4 || sizeof(TCHAR) > 1)
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{
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return IsHungAppWindow(hWnd);
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}
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else
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#endif
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{
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static FARPROC g_func = GetProcAddress(LoadLibraryA("USER32"), "IsHungAppWindow");
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if (g_func) return ((BOOL(WINAPI*)(HWND))g_func)(hWnd);
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DWORD_PTR mr;
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LRESULT rv = SendMessageTimeout(hWnd, WM_NULL, 0, 0, SMTO_ABORTIFHUNG, 500, &mr);
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return rv == 0;
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}
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}
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static void SetDragSourceImage(HWND hDlg, INT_PTR Dragging = false)
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{
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HCURSOR hCur = Dragging ? NULL : LoadCursor(NULL, IDC_CROSS);
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SendDlgItemMessage(hDlg, IDC_SPYDRAG, STM_SETIMAGE, IMAGE_CURSOR, (LPARAM) hCur);
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}
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static void ShowWindowInfo(HWND hDlg, HWND hWnd)
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{
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const TCHAR *strFmtPtr = sizeof(void*) > 4 ? _T("%#.16I64x") : _T("%#.8x");
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const TCHAR *strFmtPtr2 = sizeof(void*) > 4 ? _T("%#.16I64x & %#.16I64x") : _T("%#.8x & %#.8x");
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const TCHAR *strIntPtr = sizeof(void*) > 4 ? _T("%I64d") : _T("%d");
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TCHAR buf[300];
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LONG_PTR style = GetWindowLongPtr(hWnd, GWL_STYLE);
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wsprintf(buf, strIntPtr, GetWindowLongPtr(hWnd, GWLP_ID));
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SetDlgItemText(hDlg, IDC_WNDID, buf);
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wsprintf(buf, strFmtPtr, hWnd);
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SetDlgItemText(hDlg, IDC_HWND, buf);
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if (!GetClassName(hWnd, buf, COUNTOF(buf))) *buf = _T('\0');
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SetDlgItemText(hDlg, IDC_WNDCLASS, buf);
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wsprintf(buf, strFmtPtr2, GetWindowLongPtr(hWnd, GWLP_USERDATA), GetWindowLongPtr(hWnd, DWLP_USER));
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SetDlgItemText(hDlg, IDC_WNDUSERDATA, buf);
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wsprintf(buf, strFmtPtr2, (LONG_PTR) style, GetWindowLongPtr(hWnd, GWL_EXSTYLE));
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SetDlgItemText(hDlg, IDC_WNDSTYLE, buf);
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RECT rw, rc;
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GetWindowRect(hWnd, &rw), GetClientRect(hWnd, &rc);
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wsprintf(buf, _T("%dx%d..%dx%d \x2248 %dx%d (%dx%d)"), rw.left, rw.top, rw.right, rw.bottom, rw.right - rw.left, rw.bottom - rw.top, rc.right - rc.left, rc.bottom - rc.top); // '\x2245' is not present on XP
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SetDlgItemText(hDlg, IDC_WNDSIZE, hWnd ? buf : NULL);
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*buf = _T('\0');
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if (IsWindowUnicode(hWnd)) lstrcat(buf, _T("Unicode"));
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if (IsWindowVisible(hWnd)) lstrcat(*buf ? lstrcat(buf, _T(", ")) : buf, _T("Visible")); // IsWindowVisible is not exactly the same as WS_VISIBLE
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if (!(style & WS_DISABLED)) lstrcat(*buf ? lstrcat(buf, _T(", ")) : buf, _T("Enabled"));
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if (IsHung(hWnd)) lstrcat(*buf ? lstrcat(buf, _T(", ")) : buf, _T("Hung"));
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SetDlgItemText(hDlg, IDC_WNDINFO, hWnd ? buf : NULL);
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UINT dpi = DPI::GetDpiForWindow(hWnd);
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wsprintf(buf, dpi ? _T("%u") : _T("?"), dpi);
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SetDlgItemText(hDlg, IDC_WNDDPI, hWnd ? buf : NULL);
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}
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static INT_PTR CALLBACK SpyDlgProc(HWND hDlg, UINT Msg, WPARAM WParam, LPARAM LParam)
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{
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DIALOGDATA*pDD = DIALOGDATA::Get(hDlg);
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switch(Msg)
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{
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case WM_INITDIALOG:
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SetWindowLongPtr(hDlg, DWLP_USER, (LONG_PTR) (pDD = (DIALOGDATA*) LParam));
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CenterOnParent(hDlg);
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// On >= 10.1703 we are PMv2 and Windows scales our dialog and child controls.
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// On >= 10.1607 && < 10.1703 we are System aware but try to upgrade this thread to
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// PMv1 to reduce compatibility handling in other USER32 functions. We don't want
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// the dialog HWND to be PMv1 because we are not going to reposition our controls.
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// On < 10.1607 we only have the process awareness (not ideal).
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if (pDD->DialogAwarenessContext > DPI::ac_pm2) // Is the dialog AC < PMv2? Note: The canonical AC numbers are negative.
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DPI::SetThreadDpiAwarenessContext(DPI::ac_pm1);
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SendMessage(hDlg, WM_CAPTURECHANGED, 0, 0);
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break;
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case WM_CLOSE: close:
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return EndDialog(hDlg, 0);
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case WM_COMMAND:
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switch(WParam)
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{
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case IDCANCEL:
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goto close;
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case MAKELONG(IDC_SPYDRAG, STN_CLICKED):
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SetCapture(hDlg);
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pDD->hWndTarget = 0;
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pDD->Dragging++;
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SetDragSourceImage(hDlg, (INT_PTR) hDlg);
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SetCursor(LoadCursor(NULL, IDC_CROSS));
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break;
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}
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break;
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case WM_MOUSEMOVE:
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if (pDD->Dragging)
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{
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POINT pt;
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GetCursorPos(&pt);
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HWND hWnd = GetChildWindowFromPointHelper(pt);
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if (hWnd == pDD->hWndTarget)
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break;
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pDD->hWndTarget = hWnd;
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if (GetAncestor(hWnd, GA_ROOT) == hDlg)
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hWnd = 0;
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ShowWindowInfo(hDlg, hWnd);
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}
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break;
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case WM_LBUTTONUP:
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ReleaseCapture();
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break;
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case WM_CAPTURECHANGED:
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SetFocus(GetDlgItem(hDlg, IDC_SPYDRAG));
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pDD->Dragging = 0;
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SetDragSourceImage(hDlg, FALSE);
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break;
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}
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return FALSE;
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}
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struct ScopedThreadDpiAwarenessContext { // Note: Assumes InitializeDpiApi() has been called!
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struct List {
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List() : m_l(0) {}
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List operator <<(INT_PTR in) { List r = *this; r.m_l |= (1 << (in < 0 ? -in : in)); return r; }
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UINT GetBits() const { return m_l; }
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UINT m_l;
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};
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ScopedThreadDpiAwarenessContext(List ACList) : m_OrgAC(0)
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{
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for (UINT s = 4, list = ACList.GetBits(); (m_AC = -(int)s); --s)
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if ((1 << s) & list)
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if ((m_OrgAC = DPI::SetThreadDpiAwarenessContext((INT_PTR) m_AC)))
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break;
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}
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~ScopedThreadDpiAwarenessContext()
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{
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DPI::SetThreadDpiAwarenessContext(m_OrgAC);
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}
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int GetCanonicalActiveAwarenessContext() const { return m_AC; }
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INT_PTR m_OrgAC;
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int m_AC; // Canonical "active" DPI_AWARENESS_CONTEXT
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};
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int ShowWndSpy(HWND hOwner)
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{
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InitializeDpiApi();
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ScopedThreadDpiAwarenessContext::List aclist;
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ScopedThreadDpiAwarenessContext stdac(aclist << DPI::ac_pm2 << DPI::ac_system);
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DIALOGDATA dd;
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dd.DialogAwarenessContext = stdac.GetCanonicalActiveAwarenessContext();
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return DialogBoxParam(GetModuleHandle(NULL), MAKEINTRESOURCE(DLG_WNDSPY), hOwner, SpyDlgProc, (LPARAM) &dd);
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}
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