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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "nativewindowdump.h"
#include "qwindowdump.h"
#include <QtCore/QDebug>
#include <QtCore/QList>
#include <QtCore/QRect>
#include <QtCore/QSharedPointer>
#include <QtCore/QTextStream>
#include <QtCore/qt_windows.h>
#ifndef WS_EX_NOREDIRECTIONBITMAP
# define WS_EX_NOREDIRECTIONBITMAP 0x00200000L
#endif
using namespace Qt;
namespace QtDiag {
struct DumpContext {
DumpContext() : indentation(0), parent(0) {}
int indentation;
HWND parent;
QSharedPointer<QTextStream> stream;
};
#define debugWinStyle(str, style, styleConstant) \
if (style & styleConstant) \
str << ' ' << #styleConstant;
static QTextStream &operator<<(QTextStream &str, const QPoint &p)
{
str << p.x() << ", " << p.y();
return str;
}
static QTextStream &operator<<(QTextStream &str, const QSize &s)
{
str << s.width() << 'x' << s.height();
return str;
}
static QTextStream &operator<<(QTextStream &str, const QRect &rect)
{
str << rect.size() << Qt::forcesign << rect.x() << rect.y() << Qt::noforcesign;
return str;
}
static inline QSize qsizeFromRECT(const RECT &rect)
{
return QSize(rect.right -rect.left, rect.bottom - rect.top);
}
static inline QRect qrectFromRECT(const RECT &rect)
{
return QRect(QPoint(rect.left, rect.top), qsizeFromRECT(rect));
}
static QRect getFrameGeometry(HWND hwnd)
{
RECT rect;
return GetWindowRect(hwnd, &rect) ? qrectFromRECT(rect) : QRect();
}
static QPoint getClientAreaScreenPos(HWND hwnd)
{
POINT clientPos{0, 0};
return ClientToScreen(hwnd, &clientPos) ? QPoint(clientPos.x, clientPos.y) : QPoint();
}
static QRect getClientAreaGeometry(HWND hwnd)
{
RECT clientRect;
return GetClientRect(hwnd, &clientRect)
? QRect(getClientAreaScreenPos(hwnd), qsizeFromRECT(clientRect)) : QRect();
}
static bool isTopLevel(HWND hwnd)
{
auto parent = GetParent(hwnd);
return !parent || parent == GetDesktopWindow();
}
static void formatNativeWindow(HWND hwnd, QTextStream &str)
{
str << Qt::hex << Qt::showbase << quintptr(hwnd) << Qt::noshowbase << Qt::dec;
const bool topLevel = isTopLevel(hwnd);
if (topLevel)
str << " [top]";
const auto frameGeometry = getFrameGeometry(hwnd);
const auto clientGeometry = getClientAreaGeometry(hwnd);
str << ' ' << frameGeometry;
if (!topLevel)
str << " local: " << (clientGeometry.topLeft() - getClientAreaScreenPos(GetParent(hwnd)));
if (clientGeometry != frameGeometry) {
str << " client: " << clientGeometry << " frame: "
<< (clientGeometry.topLeft() - frameGeometry.topLeft());
}
if (IsWindowVisible(hwnd))
str << " [visible]";
wchar_t buf[512];
if (GetWindowText(hwnd, buf, sizeof(buf)/sizeof(buf[0])) && buf[0])
str << " title=\"" << QString::fromWCharArray(buf) << "\"/";
else
str << ' ';
if (GetClassName(hwnd, buf, sizeof(buf)/sizeof(buf[0])))
str << '"' << QString::fromWCharArray(buf) << '"';
str << Qt::hex << Qt::showbase;
if (const LONG_PTR style = GetWindowLongPtr(hwnd, GWL_STYLE)) {
str << " style=" << style;
debugWinStyle(str, style, WS_OVERLAPPED)
debugWinStyle(str, style, WS_POPUP)
debugWinStyle(str, style, WS_MINIMIZE)
debugWinStyle(str, style, WS_CHILD)
debugWinStyle(str, style, WS_VISIBLE)
debugWinStyle(str, style, WS_DISABLED)
debugWinStyle(str, style, WS_CLIPSIBLINGS)
debugWinStyle(str, style, WS_CLIPCHILDREN)
debugWinStyle(str, style, WS_MAXIMIZE)
debugWinStyle(str, style, WS_CAPTION)
debugWinStyle(str, style, WS_BORDER)
debugWinStyle(str, style, WS_DLGFRAME)
debugWinStyle(str, style, WS_VSCROLL)
debugWinStyle(str, style, WS_HSCROLL)
debugWinStyle(str, style, WS_SYSMENU)
debugWinStyle(str, style, WS_THICKFRAME)
debugWinStyle(str, style, WS_GROUP)
debugWinStyle(str, style, WS_TABSTOP)
debugWinStyle(str, style, WS_MINIMIZEBOX)
debugWinStyle(str, style, WS_MAXIMIZEBOX)
}
if (const LONG_PTR exStyle = GetWindowLongPtr(hwnd, GWL_EXSTYLE)) {
str << " exStyle=" << exStyle;
debugWinStyle(str, exStyle, WS_EX_DLGMODALFRAME)
debugWinStyle(str, exStyle, WS_EX_NOPARENTNOTIFY)
debugWinStyle(str, exStyle, WS_EX_TOPMOST)
debugWinStyle(str, exStyle, WS_EX_ACCEPTFILES)
debugWinStyle(str, exStyle, WS_EX_TRANSPARENT)
debugWinStyle(str, exStyle, WS_EX_MDICHILD)
debugWinStyle(str, exStyle, WS_EX_TOOLWINDOW)
debugWinStyle(str, exStyle, WS_EX_WINDOWEDGE)
debugWinStyle(str, exStyle, WS_EX_CLIENTEDGE)
debugWinStyle(str, exStyle, WS_EX_CONTEXTHELP)
debugWinStyle(str, exStyle, WS_EX_RIGHT)
debugWinStyle(str, exStyle, WS_EX_LEFT)
debugWinStyle(str, exStyle, WS_EX_RTLREADING)
debugWinStyle(str, exStyle, WS_EX_LTRREADING)
debugWinStyle(str, exStyle, WS_EX_LEFTSCROLLBAR)
debugWinStyle(str, exStyle, WS_EX_RIGHTSCROLLBAR)
debugWinStyle(str, exStyle, WS_EX_CONTROLPARENT)
debugWinStyle(str, exStyle, WS_EX_STATICEDGE)
debugWinStyle(str, exStyle, WS_EX_APPWINDOW)
debugWinStyle(str, exStyle, WS_EX_LAYERED)
debugWinStyle(str, exStyle, WS_EX_NOINHERITLAYOUT)
debugWinStyle(str, exStyle, WS_EX_NOREDIRECTIONBITMAP)
debugWinStyle(str, exStyle, WS_EX_LAYOUTRTL)
debugWinStyle(str, exStyle, WS_EX_COMPOSITED)
debugWinStyle(str, exStyle, WS_EX_NOACTIVATE)
}
if (const ULONG_PTR classStyle = GetClassLongPtr(hwnd, GCL_STYLE)) {
str << " classStyle=" << classStyle;
debugWinStyle(str, classStyle, CS_BYTEALIGNCLIENT)
debugWinStyle(str, classStyle, CS_BYTEALIGNWINDOW)
debugWinStyle(str, classStyle, CS_CLASSDC)
debugWinStyle(str, classStyle, CS_DBLCLKS)
debugWinStyle(str, classStyle, CS_DROPSHADOW)
debugWinStyle(str, classStyle, CS_GLOBALCLASS)
debugWinStyle(str, classStyle, CS_HREDRAW)
debugWinStyle(str, classStyle, CS_NOCLOSE)
debugWinStyle(str, classStyle, CS_OWNDC)
debugWinStyle(str, classStyle, CS_PARENTDC)
debugWinStyle(str, classStyle, CS_SAVEBITS)
debugWinStyle(str, classStyle, CS_VREDRAW)
}
if (const ULONG_PTR wndProc = GetClassLongPtr(hwnd, GCLP_WNDPROC))
str << " wndProc=" << wndProc;
str << Qt::noshowbase << Qt::dec;
if (GetWindowModuleFileName(hwnd, buf, sizeof(buf)/sizeof(buf[0])))
str << " module=\"" << QString::fromWCharArray(buf) << '"';
str << '\n';
}
static void dumpNativeWindowRecursion(HWND hwnd, DumpContext *dc);
BOOL CALLBACK dumpWindowEnumChildProc(HWND hwnd, LPARAM lParam)
{
DumpContext *dumpContext = reinterpret_cast<DumpContext *>(lParam);
// EnumChildWindows enumerates grand children as well, skip these to
// get the hierarchical formatting right.
if (GetAncestor(hwnd, GA_PARENT) == dumpContext->parent)
dumpNativeWindowRecursion(hwnd, dumpContext);
return TRUE;
}
static void dumpNativeWindowRecursion(HWND hwnd, DumpContext *dc)
{
indentStream(*dc->stream, dc->indentation);
formatNativeWindow(hwnd, *dc->stream);
DumpContext nextLevel = *dc;
nextLevel.indentation += 2;
nextLevel.parent = hwnd;
EnumChildWindows(hwnd, dumpWindowEnumChildProc, reinterpret_cast<LPARAM>(&nextLevel));
}
/* recurse by Z order, same result */
static void dumpNativeWindowRecursionByZ(HWND hwnd, DumpContext *dc)
{
indentStream(*dc->stream, dc->indentation);
formatNativeWindow(hwnd, *dc->stream);
if (const HWND topChild = GetTopWindow(hwnd)) {
DumpContext nextLevel = *dc;
nextLevel.indentation += 2;
for (HWND child = topChild; child ; child = GetNextWindow(child, GW_HWNDNEXT))
dumpNativeWindowRecursionByZ(child, &nextLevel);
}
}
typedef QList<WId> WIdVector;
static void dumpNativeWindows(const WIdVector& wins)
{
DumpContext dc;
QString s;
dc.stream = QSharedPointer<QTextStream>(new QTextStream(&s));
for (WId win : wins)
dumpNativeWindowRecursion(reinterpret_cast<HWND>(win), &dc);
qDebug().noquote() << s;
}
void dumpNativeWindows(WId rootIn)
{
const WId root = rootIn ? rootIn : reinterpret_cast<WId>(GetDesktopWindow());
dumpNativeWindows(WIdVector(1, root));
}
BOOL CALLBACK findQtTopLevelEnumChildProc(HWND hwnd, LPARAM lParam)
{
WIdVector *v = reinterpret_cast<WIdVector *>(lParam);
wchar_t buf[512];
if (GetClassName(hwnd, buf, sizeof(buf)/sizeof(buf[0]))) {
if (wcsstr(buf, L"Qt"))
v->append(reinterpret_cast<WId>(hwnd));
}
return TRUE;
}
static WIdVector findQtTopLevels()
{
WIdVector result;
EnumChildWindows(GetDesktopWindow(),
findQtTopLevelEnumChildProc,
reinterpret_cast<LPARAM>(&result));
return result;
}
void dumpNativeQtTopLevels()
{
dumpNativeWindows(findQtTopLevels());
}
} // namespace QtDiag
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