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153 lines
3.9 KiB
153 lines
3.9 KiB
/*
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* Copyright (C) 2015-2016 Département de l'Instruction Publique (DIP-SEM)
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*
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* Copyright (C) 2013 Open Education Foundation
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*
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* Copyright (C) 2010-2013 Groupement d'Intérêt Public pour
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* l'Education Numérique en Afrique (GIP ENA)
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*
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* This file is part of OpenBoard.
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*
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* OpenBoard is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3 of the License,
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* with a specific linking exception for the OpenSSL project's
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* "OpenSSL" library (or with modified versions of it that use the
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* same license as the "OpenSSL" library).
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*
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* OpenBoard is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenBoard. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "UBWindowCaptureDelegate_win.h"
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#include <windows.h>
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#include <QDialog>
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#include "core/memcheck.h"
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UBWindowCaptureDelegate::UBWindowCaptureDelegate(QObject *parent)
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:QObject(parent)
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, mIsCapturing(false)
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, mCancel(false)
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, mLastPoint(0, 0)
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{
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// NOOP
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}
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UBWindowCaptureDelegate::~UBWindowCaptureDelegate(void)
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{
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// NOOP
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}
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const QPixmap UBWindowCaptureDelegate::getCapturedWindow()
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{
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return mCapturedPixmap;
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}
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int UBWindowCaptureDelegate::execute()
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{
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mIsCapturing = true;
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mCancel = false;
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qApp->installEventFilter(this);
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while (mIsCapturing && !mCancel)
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{
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QPoint curPos = QCursor::pos();
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if (mLastPoint != curPos)
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{
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processPos(curPos);
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mLastPoint = curPos;
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}
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drawSelectionRect();
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qApp->processEvents();
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}
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if (!mCancel)
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{
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BringWindowToTop(mCurrentWindow);
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RedrawWindow(mCurrentWindow, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
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QWaitCondition sleep;
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QMutex mutex;
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mutex.lock();
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sleep.wait(&mutex, 200);
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mutex.unlock();
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mCapturedPixmap = QPixmap::grabWindow((WId)mCurrentWindow);
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return QDialog::Accepted;
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}
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else
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{
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RedrawWindow(NULL, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
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return QDialog::Rejected;
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}
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}
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void UBWindowCaptureDelegate::processPos(QPoint pPoint)
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{
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POINT wPoint;
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wPoint.x = pPoint.x();
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wPoint.y = pPoint.y();
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HWND desktop = GetDesktopWindow();
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HWND newWindow = ChildWindowFromPointEx(desktop, wPoint, CWP_SKIPINVISIBLE | CWP_SKIPTRANSPARENT);
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if (mCurrentWindow != newWindow && newWindow != desktop)
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{
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RedrawWindow(NULL, NULL, NULL, RDW_INVALIDATE | RDW_UPDATENOW | RDW_ALLCHILDREN);
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mCurrentWindow = newWindow;
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}
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}
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void UBWindowCaptureDelegate::drawSelectionRect()
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{
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RECT windowRect;
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if (GetWindowRect(mCurrentWindow, &windowRect))
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{
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HDC hDC;
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HPEN hOldPen;
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HBRUSH hOldBrush;
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hDC = GetDC(NULL);
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hOldPen = (HPEN)SelectObject(hDC, CreatePen(PS_SOLID, 5, RGB(255, 0, 0)));
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hOldBrush = (HBRUSH)SelectObject(hDC, GetStockObject(NULL_BRUSH));
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Rectangle(hDC, windowRect.left + 1, windowRect.top + 1, windowRect.right - 1, windowRect.bottom - 1);
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SelectObject(hDC, hOldBrush);
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DeleteObject(SelectObject(hDC, hOldPen));
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ReleaseDC(NULL, hDC);
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}
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}
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bool UBWindowCaptureDelegate::eventFilter(QObject *target, QEvent *event)
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{
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Q_UNUSED(target);
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// once the application is deactivated, it means that the user clicked somewhere else and we shall
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// take the capture
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if (event->type() == QEvent::MouseButtonPress || event->type() == QEvent::WindowDeactivate)
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{
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mIsCapturing = false;
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}
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else if (event->type() == QEvent::KeyPress)
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{
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mCancel = true;
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}
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return true;
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}
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