src/plugins/platforms/windows/qwindowsguieventdispatcher.cpp

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  41
  42 #include "qwindowsguieventdispatcher.h"
  43 #include "qwindowscontext.h"
  44
  45 #include <qpa/qwindowsysteminterface.h>
  46
  47 #include <QtCore/QStack>
  48 #include <QtCore/QDebug>
  49
  50 #include <windowsx.h>
  51
  52 QT_BEGIN_NAMESPACE
  53
  54 /*!
  55     \class QWindowsGuiEventDispatcher
  56     \brief Event dispatcher for Windows
  57
  58     Maintains a global stack storing the current event dispatcher and
  59     its processing flags for access from the Windows procedure
  60     qWindowsWndProc. Handling the Lighthouse gui events should be done
  61     from within the qWindowsWndProc to ensure correct processing of messages.
  62
  63     \internal
  64     \ingroup qt-lighthouse-win
  65 */
  66
  67 QWindowsGuiEventDispatcher::QWindowsGuiEventDispatcher(QObject *parent) :
  68     QEventDispatcherWin32(parent), m_flags(0)
  69 {
  70     setObjectName(QStringLiteral("QWindowsGuiEventDispatcher"));
  71 }
  72
  73 bool QWindowsGuiEventDispatcher::processEvents(QEventLoop::ProcessEventsFlags flags)
  74 {
  75     m_flags = flags;
  76     if (QWindowsContext::verboseEvents > 2)
  77         qDebug(">%s %s %d", __FUNCTION__, qPrintable(objectName()), int(flags));
  78     const bool rc = QEventDispatcherWin32::processEvents(flags);
  79     if (QWindowsContext::verboseEvents > 2)
  80         qDebug("<%s %s returns %d", __FUNCTION__, qPrintable(objectName()), rc);
  81     return rc;
  82 }
  83
  84 void QWindowsGuiEventDispatcher::sendPostedEvents()
  85 {
  86     QWindowSystemInterface::sendWindowSystemEvents(m_flags);
  87 }
  88
  89 // Helpers for printing debug output for WM_* messages.
  90 struct MessageDebugEntry
  91 {
  92     UINT message;
  93     const char *description;
  94     bool interesting;
  95 };
  96
  97 static const MessageDebugEntry
  98 messageDebugEntries[] = {
  99     {WM_CREATE, "WM_CREATE", true},
 100     {WM_PAINT, "WM_PAINT", true},
 101     {WM_CLOSE, "WM_CLOSE", true},
 102     {WM_DESTROY, "WM_DESTROY", true},
 103     {WM_MOVE, "WM_MOVE", true},
 104     {WM_SIZE, "WM_SIZE", true},
 105     {WM_MOUSEACTIVATE,"WM_MOUSEACTIVATE", true},
 106     {WM_CHILDACTIVATE, "WM_CHILDACTIVATE", true},
 107     {WM_PARENTNOTIFY, "WM_PARENTNOTIFY", true},
 108     {WM_ENTERIDLE, "WM_ENTERIDLE", false},
 109     {WM_GETICON, "WM_GETICON", false},
 110     {WM_KEYDOWN, "WM_KEYDOWN", true},
 111     {WM_SYSKEYDOWN, "WM_SYSKEYDOWN", true},
 112     {WM_SYSCOMMAND, "WM_SYSCOMMAND", true},
 113     {WM_KEYUP, "WM_KEYUP", true},
 114     {WM_SYSKEYUP, "WM_SYSKEYUP", true},
 115     {WM_IME_CHAR, "WM_IMECHAR", true},
 116     {WM_IME_KEYDOWN, "WM_IMECHAR", true},
 117     {WM_CANCELMODE,  "WM_CANCELMODE", true},
 118     {WM_CHAR, "WM_CHAR", true},
 119     {WM_DEADCHAR, "WM_DEADCHAR", true},
 120     {WM_ACTIVATE, "WM_ACTIVATE", true},
 121     {WM_GETMINMAXINFO, "WM_GETMINMAXINFO", true},
 122     {WM_SETFOCUS, "WM_SETFOCUS", true},
 123     {WM_KILLFOCUS, "WM_KILLFOCUS", true},
 124     {WM_ENABLE, "WM_ENABLE", true},
 125     {WM_SHOWWINDOW, "WM_SHOWWINDOW", true},
 126     {WM_WINDOWPOSCHANGING, "WM_WINDOWPOSCHANGING", true},
 127     {WM_WINDOWPOSCHANGED, "WM_WINDOWPOSCHANGED", true},
 128     {WM_SETCURSOR, "WM_SETCURSOR", false},
 129     {WM_GETFONT, "WM_GETFONT", true},
 130     {WM_NCMOUSEMOVE, "WM_NCMOUSEMOVE", true},
 131     {WM_LBUTTONDOWN, "WM_LBUTTONDOWN", true},
 132     {WM_LBUTTONUP, "WM_LBUTTONUP", true},
 133     {WM_LBUTTONDBLCLK, "WM_LBUTTONDBLCLK", true},
 134     {WM_RBUTTONDOWN, "WM_RBUTTONDOWN", true},
 135     {WM_RBUTTONUP, "WM_RBUTTONUP", true},
 136     {WM_RBUTTONDBLCLK, "WM_RBUTTONDBLCLK", true},
 137     {WM_MBUTTONDOWN, "WM_MBUTTONDOWN", true},
 138     {WM_MBUTTONUP, "WM_MBUTTONUP", true},
 139     {WM_MBUTTONDBLCLK, "WM_MBUTTONDBLCLK", true},
 140     {WM_MOUSEWHEEL, "WM_MOUSEWHEEL", true},
 141     {WM_XBUTTONDOWN, "WM_XBUTTONDOWN", true},
 142     {WM_XBUTTONUP, "WM_XBUTTONUP", true},
 143     {WM_XBUTTONDBLCLK, "WM_XBUTTONDBLCLK", true},
 144     {WM_MOUSEHWHEEL, "WM_MOUSEHWHEEL", true},
 145     {WM_NCCREATE, "WM_NCCREATE", true},
 146     {WM_NCCALCSIZE, "WM_NCCALCSIZE", true},
 147     {WM_NCACTIVATE, "WM_NCACTIVATE", true},
 148     {WM_NCMOUSELEAVE, "WM_NCMOUSELEAVE", true},
 149     {WM_NCLBUTTONDOWN, "WM_NCLBUTTONDOWN", true},
 150     {WM_NCLBUTTONUP, "WM_NCLBUTTONUP", true},
 151     {WM_ACTIVATEAPP, "WM_ACTIVATEAPP", true},
 152     {WM_NCPAINT, "WM_NCPAINT", true},
 153     {WM_ERASEBKGND, "WM_ERASEBKGND", true},
 154     {WM_MOUSEMOVE, "WM_MOUSEMOVE", true},
 155     {WM_MOUSELEAVE, "WM_MOUSELEAVE", true},
 156     {WM_NCHITTEST, "WM_NCHITTEST", false},
 157     {WM_IME_SETCONTEXT, "WM_IME_SETCONTEXT", true},
 158     {WM_INPUTLANGCHANGE, "WM_INPUTLANGCHANGE", true},
 159     {WM_IME_NOTIFY, "WM_IME_NOTIFY", true},
 160 #if defined(WM_DWMNCRENDERINGCHANGED)
 161     {WM_DWMNCRENDERINGCHANGED, "WM_DWMNCRENDERINGCHANGED", true},
 162 #endif
 163     {WM_IME_SETCONTEXT, "WM_IME_SETCONTEXT", true},
 164     {WM_IME_NOTIFY, "WM_IME_NOTIFY", true},
 165     {WM_TOUCH, "WM_TOUCH", true},
 166     {WM_CHANGECBCHAIN, "WM_CHANGECBCHAIN", true},
 167     {WM_DRAWCLIPBOARD, "WM_DRAWCLIPBOARD", true},
 168     {WM_RENDERFORMAT, "WM_RENDERFORMAT", true},
 169     {WM_RENDERALLFORMATS, "WM_RENDERALLFORMATS", true},
 170     {WM_DESTROYCLIPBOARD, "WM_DESTROYCLIPBOARD", true},
 171     {WM_CAPTURECHANGED, "WM_CAPTURECHANGED", true},
 172     {WM_IME_STARTCOMPOSITION, "WM_IME_STARTCOMPOSITION", true},
 173     {WM_IME_COMPOSITION, "WM_IME_COMPOSITION", true},
 174     {WM_IME_ENDCOMPOSITION, "WM_IME_ENDCOMPOSITION", true},
 175     {WM_IME_NOTIFY, "WM_IME_NOTIFY", true},
 176     {WM_IME_REQUEST, "WM_IME_REQUEST", true},
 177     {WM_DISPLAYCHANGE, "WM_DISPLAYCHANGE", true},
 178     {WM_THEMECHANGED, "WM_THEMECHANGED", true}
 179 };
 180
 181 static inline const MessageDebugEntry *messageDebugEntry(UINT msg)
 182 {
 183     for (size_t i = 0; i < sizeof(messageDebugEntries)/sizeof(MessageDebugEntry); i++)
 184         if (messageDebugEntries[i].message == msg)
 185             return messageDebugEntries + i;
 186     return 0;
 187 }
 188
 189 const char *QWindowsGuiEventDispatcher::windowsMessageName(UINT msg)
 190 {
 191     if (const MessageDebugEntry *e = messageDebugEntry(msg))
 192         return e->description;
 193     return "Unknown";
 194 }
 195
 196 QT_END_NAMESPACE