297 lines
12 KiB
C++
297 lines
12 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the plugins of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qwindowsmousehandler.h"
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#include "qwindowscontext.h"
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#include "qwindowswindow.h"
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#include "qwindowsintegration.h"
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#include <QtGui/QWindowSystemInterface>
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#include <QtGui/QGuiApplication>
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#include <QtGui/QScreen>
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#include <QtCore/QDebug>
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#include <QtCore/QScopedArrayPointer>
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#include <windowsx.h>
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QT_BEGIN_NAMESPACE
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static inline void compressMouseMove(MSG *msg)
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{
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// Compress mouse move events
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if (msg->message == WM_MOUSEMOVE) {
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MSG mouseMsg;
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while (PeekMessage(&mouseMsg, msg->hwnd, WM_MOUSEFIRST,
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WM_MOUSELAST, PM_NOREMOVE)) {
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if (mouseMsg.message == WM_MOUSEMOVE) {
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#define PEEKMESSAGE_IS_BROKEN 1
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#ifdef PEEKMESSAGE_IS_BROKEN
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// Since the Windows PeekMessage() function doesn't
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// correctly return the wParam for WM_MOUSEMOVE events
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// if there is a key release event in the queue
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// _before_ the mouse event, we have to also consider
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// key release events (kls 2003-05-13):
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MSG keyMsg;
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bool done = false;
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while (PeekMessage(&keyMsg, 0, WM_KEYFIRST, WM_KEYLAST,
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PM_NOREMOVE)) {
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if (keyMsg.time < mouseMsg.time) {
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if ((keyMsg.lParam & 0xC0000000) == 0x40000000) {
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PeekMessage(&keyMsg, 0, keyMsg.message,
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keyMsg.message, PM_REMOVE);
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} else {
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done = true;
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break;
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}
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} else {
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break; // no key event before the WM_MOUSEMOVE event
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}
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}
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if (done)
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break;
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#else
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// Actually the following 'if' should work instead of
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// the above key event checking, but apparently
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// PeekMessage() is broken :-(
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if (mouseMsg.wParam != msg.wParam)
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break; // leave the message in the queue because
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// the key state has changed
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#endif
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// Update the passed in MSG structure with the
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// most recent one.
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msg->lParam = mouseMsg.lParam;
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msg->wParam = mouseMsg.wParam;
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// Extract the x,y coordinates from the lParam as we do in the WndProc
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msg->pt.x = GET_X_LPARAM(mouseMsg.lParam);
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msg->pt.y = GET_Y_LPARAM(mouseMsg.lParam);
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ClientToScreen(msg->hwnd, &(msg->pt));
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// Remove the mouse move message
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PeekMessage(&mouseMsg, msg->hwnd, WM_MOUSEMOVE,
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WM_MOUSEMOVE, PM_REMOVE);
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} else {
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break; // there was no more WM_MOUSEMOVE event
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}
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}
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}
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}
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/*!
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\class QWindowsMouseHandler
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\brief Windows mouse handler
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Dispatches mouse and touch events. Separate for code cleanliness.
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\ingroup qt-lighthouse-win
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*/
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QWindowsMouseHandler::QWindowsMouseHandler() :
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m_windowUnderMouse(0),
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m_touchDevice(0)
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{
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}
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bool QWindowsMouseHandler::translateMouseEvent(QWindow *window, HWND hwnd,
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QtWindows::WindowsEventType et,
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MSG msg, LRESULT *result)
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{
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if (et & QtWindows::NonClientEventFlag)
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return false;
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if (et == QtWindows::MouseWheelEvent)
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return translateMouseWheelEvent(window, hwnd, msg, result);
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*result = 0;
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if (msg.message == WM_MOUSELEAVE) {
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// When moving out of a child, MouseMove within parent is received first
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// (see below)
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if (QWindowsContext::verboseEvents)
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qDebug() << "WM_MOUSELEAVE for " << window << " current= " << m_windowUnderMouse;
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if (window == m_windowUnderMouse) {
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QWindowSystemInterface::handleLeaveEvent(window);
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m_windowUnderMouse = 0;
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}
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return true;
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}
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compressMouseMove(&msg);
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const QPoint client(GET_X_LPARAM(msg.lParam), GET_Y_LPARAM(msg.lParam));
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// Enter new window: track to generate leave event.
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if (m_windowUnderMouse != window) {
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// The tracking on m_windowUnderMouse might still be active and
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// trigger later on.
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if (m_windowUnderMouse) {
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if (QWindowsContext::verboseEvents)
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qDebug() << "Synthetic leave for " << m_windowUnderMouse;
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QWindowSystemInterface::handleLeaveEvent(m_windowUnderMouse);
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}
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m_windowUnderMouse = window;
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if (QWindowsContext::verboseEvents)
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qDebug() << "Entering " << window;
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QWindowsWindow::baseWindowOf(window)->applyCursor();
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QWindowSystemInterface::handleEnterEvent(window);
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TRACKMOUSEEVENT tme;
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tme.cbSize = sizeof(TRACKMOUSEEVENT);
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tme.dwFlags = TME_LEAVE;
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tme.hwndTrack = hwnd;
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tme.dwHoverTime = HOVER_DEFAULT; //
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if (!TrackMouseEvent(&tme))
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qWarning("TrackMouseEvent failed.");
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}
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QWindowSystemInterface::handleMouseEvent(window, client,
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QWindowsGeometryHint::mapToGlobal(hwnd, client),
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keyStateToMouseButtons((int)msg.wParam));
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return true;
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}
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bool QWindowsMouseHandler::translateMouseWheelEvent(QWindow *window, HWND,
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MSG msg, LRESULT *)
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{
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const Qt::MouseButtons buttons = keyStateToMouseButtons((int)msg.wParam);
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int delta;
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if (msg.message == WM_MOUSEWHEEL || msg.message == WM_MOUSEHWHEEL)
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delta = (short) HIWORD (msg.wParam);
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else
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delta = (int) msg.wParam;
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Qt::Orientation orientation = (msg.message == WM_MOUSEHWHEEL
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|| (buttons & Qt::AltModifier)) ?
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Qt::Horizontal : Qt::Vertical;
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// according to the MSDN documentation on WM_MOUSEHWHEEL:
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// a positive value indicates that the wheel was rotated to the right;
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// a negative value indicates that the wheel was rotated to the left.
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// Qt defines this value as the exact opposite, so we have to flip the value!
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if (msg.message == WM_MOUSEHWHEEL)
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delta = -delta;
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const QPoint globalPos(GET_X_LPARAM(msg.lParam), GET_Y_LPARAM(msg.lParam));
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// TODO: if there is a widget under the mouse and it is not shadowed
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// QWindow *receiver = windowAt(pos);
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// by modality, we send the event to it first.
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//synaptics touchpad shows its own widget at this position
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//so widgetAt() will fail with that HWND, try child of this widget
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// if (!receiver) receiver = window->childAt(pos);
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QWindow *receiver = window;
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QWindowSystemInterface::handleWheelEvent(receiver,
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QWindowsGeometryHint::mapFromGlobal(receiver, globalPos),
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globalPos,
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delta, orientation);
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return true;
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}
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// from bool QApplicationPrivate::translateTouchEvent()
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bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
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QtWindows::WindowsEventType,
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MSG msg, LRESULT *)
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{
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typedef QWindowSystemInterface::TouchPoint QTouchPoint;
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typedef QList<QWindowSystemInterface::TouchPoint> QTouchPointList;
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const QRect screenGeometry = window->screen()->geometry();
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const int winTouchPointCount = msg.wParam;
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QScopedArrayPointer<TOUCHINPUT> winTouchInputs(new TOUCHINPUT[winTouchPointCount]);
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memset(winTouchInputs.data(), 0, sizeof(TOUCHINPUT) * winTouchPointCount);
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QTouchPointList touchPoints;
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touchPoints.reserve(winTouchPointCount);
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Qt::TouchPointStates allStates = 0;
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Q_ASSERT(QWindowsContext::user32dll.getTouchInputInfo);
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QWindowsContext::user32dll.getTouchInputInfo((HANDLE) msg.lParam, msg.wParam, winTouchInputs.data(), sizeof(TOUCHINPUT));
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for (int i = 0; i < winTouchPointCount; ++i) {
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const TOUCHINPUT &winTouchInput = winTouchInputs[i];
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QTouchPoint touchPoint;
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touchPoint.pressure = 1.0;
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if ((winTouchInput.dwFlags & TOUCHEVENTF_PRIMARY) != 0)
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touchPoint.flags |= QTouchEvent::TouchPoint::Primary;
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touchPoint.id = m_touchInputIDToTouchPointID.value(winTouchInput.dwID, -1);
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if (touchPoint.id == -1) {
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touchPoint.id = m_touchInputIDToTouchPointID.size();
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m_touchInputIDToTouchPointID.insert(winTouchInput.dwID, touchPoint.id);
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}
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QPointF screenPos = QPointF(qreal(winTouchInput.x) / qreal(100.), qreal(winTouchInput.y) / qreal(100.));
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if (winTouchInput.dwMask & TOUCHINPUTMASKF_CONTACTAREA)
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touchPoint.area.setSize(QSizeF(qreal(winTouchInput.cxContact) / qreal(100.),
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qreal(winTouchInput.cyContact) / qreal(100.)));
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touchPoint.area.moveCenter(screenPos);
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if (winTouchInput.dwFlags & TOUCHEVENTF_DOWN) {
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touchPoint.state = Qt::TouchPointPressed;
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} else if (winTouchInput.dwFlags & TOUCHEVENTF_UP) {
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touchPoint.state = Qt::TouchPointReleased;
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} else {
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// TODO: Previous code checked"
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// screenPos == touchPoint.normalPosition -> Qt::TouchPointStationary, but
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// but touchPoint.normalPosition was never initialized?
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touchPoint.state = touchPoint.state;
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}
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touchPoint.normalPosition = QPointF(screenPos.x() / screenGeometry.width(),
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screenPos.y() / screenGeometry.height());
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allStates |= touchPoint.state;
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touchPoints.append(touchPoint);
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}
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QWindowsContext::user32dll.closeTouchInputHandle((HANDLE) msg.lParam);
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// all touch points released, forget the ids we've seen, they may not be reused
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if (allStates == Qt::TouchPointReleased)
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m_touchInputIDToTouchPointID.clear();
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if (!m_touchDevice) {
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m_touchDevice = new QTouchDevice;
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// TODO: Device used to be hardcoded to screen in previous code.
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m_touchDevice->setType(QTouchDevice::TouchScreen);
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m_touchDevice->setCapabilities(QTouchDevice::Position | QTouchDevice::Area | QTouchDevice::NormalizedPosition);
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QWindowSystemInterface::registerTouchDevice(m_touchDevice);
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}
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QWindowSystemInterface::handleTouchEvent(window,
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m_touchDevice,
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touchPoints);
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return true;
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}
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QT_END_NAMESPACE
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