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Diffstat (limited to 'src/gui/widgets/qwidgetresizehandler.cpp')
| -rw-r--r-- | src/gui/widgets/qwidgetresizehandler.cpp | 547 |
1 files changed, 0 insertions, 547 deletions
diff --git a/src/gui/widgets/qwidgetresizehandler.cpp b/src/gui/widgets/qwidgetresizehandler.cpp deleted file mode 100644 index 2d459ec1f0..0000000000 --- a/src/gui/widgets/qwidgetresizehandler.cpp +++ /dev/null @@ -1,547 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qwidgetresizehandler_p.h" - -#ifndef QT_NO_RESIZEHANDLER -#include "qframe.h" -#include "qapplication.h" -#include "qdesktopwidget.h" -#include "qcursor.h" -#include "qsizegrip.h" -#include "qevent.h" -#if defined(Q_WS_WIN) -#include "qt_windows.h" -#endif -#include "qdebug.h" -#include "private/qlayoutengine_p.h" - -QT_BEGIN_NAMESPACE - -#define RANGE 4 - -static bool resizeHorizontalDirectionFixed = false; -static bool resizeVerticalDirectionFixed = false; - -QWidgetResizeHandler::QWidgetResizeHandler(QWidget *parent, QWidget *cw) - : QObject(parent), widget(parent), childWidget(cw ? cw : parent), - fw(0), extrahei(0), buttonDown(false), moveResizeMode(false), sizeprotect(true), movingEnabled(true) -{ - mode = Nowhere; - widget->setMouseTracking(true); - QFrame *frame = qobject_cast<QFrame*>(widget); - range = frame ? frame->frameWidth() : RANGE; - range = qMax(RANGE, range); - activeForMove = activeForResize = true; - widget->installEventFilter(this); -} - -void QWidgetResizeHandler::setActive(Action ac, bool b) -{ - if (ac & Move) - activeForMove = b; - if (ac & Resize) - activeForResize = b; - - if (!isActive()) - setMouseCursor(Nowhere); -} - -bool QWidgetResizeHandler::isActive(Action ac) const -{ - bool b = false; - if (ac & Move) b = activeForMove; - if (ac & Resize) b |= activeForResize; - - return b; -} - -bool QWidgetResizeHandler::eventFilter(QObject *o, QEvent *ee) -{ - if (!isActive() - || (ee->type() != QEvent::MouseButtonPress - && ee->type() != QEvent::MouseButtonRelease - && ee->type() != QEvent::MouseMove - && ee->type() != QEvent::KeyPress - && ee->type() != QEvent::ShortcutOverride) - ) - return false; - - Q_ASSERT(o == widget); - QWidget *w = widget; - if (QApplication::activePopupWidget()) { - if (buttonDown && ee->type() == QEvent::MouseButtonRelease) - buttonDown = false; - return false; - } - - QMouseEvent *e = (QMouseEvent*)ee; - switch (e->type()) { - case QEvent::MouseButtonPress: { - if (w->isMaximized()) - break; - if (!widget->rect().contains(widget->mapFromGlobal(e->globalPos()))) - return false; - if (e->button() == Qt::LeftButton) { -#if defined(Q_WS_X11) - /* - Implicit grabs do not stop the X server from changing - the cursor in children, which looks *really* bad when - doing resizingk, so we grab the cursor. Note that we do - not do this on Windows since double clicks are lost due - to the grab (see change 198463). - */ - if (e->spontaneous()) -# if !defined(QT_NO_CURSOR) - widget->grabMouse(widget->cursor()); -# else - widget->grabMouse(); -# endif // QT_NO_CURSOR -#endif // Q_WS_X11 - buttonDown = false; - emit activate(); - bool me = movingEnabled; - movingEnabled = (me && o == widget); - mouseMoveEvent(e); - movingEnabled = me; - buttonDown = true; - moveOffset = widget->mapFromGlobal(e->globalPos()); - invertedMoveOffset = widget->rect().bottomRight() - moveOffset; - if (mode == Center) { - if (movingEnabled) - return true; - } else { - return true; - } - } - } break; - case QEvent::MouseButtonRelease: - if (w->isMaximized()) - break; - if (e->button() == Qt::LeftButton) { - moveResizeMode = false; - buttonDown = false; - widget->releaseMouse(); - widget->releaseKeyboard(); - if (mode == Center) { - if (movingEnabled) - return true; - } else { - return true; - } - } - break; - case QEvent::MouseMove: { - if (w->isMaximized()) - break; - buttonDown = buttonDown && (e->buttons() & Qt::LeftButton); // safety, state machine broken! - bool me = movingEnabled; - movingEnabled = (me && o == widget && (buttonDown || moveResizeMode)); - mouseMoveEvent(e); - movingEnabled = me; - if (mode == Center) { - if (movingEnabled) - return true; - } else { - return true; - } - } break; - case QEvent::KeyPress: - keyPressEvent((QKeyEvent*)e); - break; - case QEvent::ShortcutOverride: - if (buttonDown) { - ((QKeyEvent*)ee)->accept(); - return true; - } - break; - default: - break; - } - - return false; -} - -void QWidgetResizeHandler::mouseMoveEvent(QMouseEvent *e) -{ - QPoint pos = widget->mapFromGlobal(e->globalPos()); - if (!moveResizeMode && !buttonDown) { - if (pos.y() <= range && pos.x() <= range) - mode = TopLeft; - else if (pos.y() >= widget->height()-range && pos.x() >= widget->width()-range) - mode = BottomRight; - else if (pos.y() >= widget->height()-range && pos.x() <= range) - mode = BottomLeft; - else if (pos.y() <= range && pos.x() >= widget->width()-range) - mode = TopRight; - else if (pos.y() <= range) - mode = Top; - else if (pos.y() >= widget->height()-range) - mode = Bottom; - else if (pos.x() <= range) - mode = Left; - else if ( pos.x() >= widget->width()-range) - mode = Right; - else if (widget->rect().contains(pos)) - mode = Center; - else - mode = Nowhere; - - if (widget->isMinimized() || !isActive(Resize)) - mode = Center; -#ifndef QT_NO_CURSOR - setMouseCursor(mode); -#endif - return; - } - - if (mode == Center && !movingEnabled) - return; - - if (widget->testAttribute(Qt::WA_WState_ConfigPending)) - return; - - - QPoint globalPos = (!widget->isWindow() && widget->parentWidget()) ? - widget->parentWidget()->mapFromGlobal(e->globalPos()) : e->globalPos(); - if (!widget->isWindow() && !widget->parentWidget()->rect().contains(globalPos)) { - if (globalPos.x() < 0) - globalPos.rx() = 0; - if (globalPos.y() < 0) - globalPos.ry() = 0; - if (sizeprotect && globalPos.x() > widget->parentWidget()->width()) - globalPos.rx() = widget->parentWidget()->width(); - if (sizeprotect && globalPos.y() > widget->parentWidget()->height()) - globalPos.ry() = widget->parentWidget()->height(); - } - - QPoint p = globalPos + invertedMoveOffset; - QPoint pp = globalPos - moveOffset; - -#ifdef Q_WS_X11 - // Workaround for window managers which refuse to move a tool window partially offscreen. - QRect desktop = QApplication::desktop()->availableGeometry(widget); - pp.rx() = qMax(pp.x(), desktop.left()); - pp.ry() = qMax(pp.y(), desktop.top()); - p.rx() = qMin(p.x(), desktop.right()); - p.ry() = qMin(p.y(), desktop.bottom()); -#endif - - QSize ms = qSmartMinSize(childWidget); - int mw = ms.width(); - int mh = ms.height(); - if (childWidget != widget) { - mw += 2 * fw; - mh += 2 * fw + extrahei; - } - - QSize maxsize(childWidget->maximumSize()); - if (childWidget != widget) - maxsize += QSize(2 * fw, 2 * fw + extrahei); - QSize mpsize(widget->geometry().right() - pp.x() + 1, - widget->geometry().bottom() - pp.y() + 1); - mpsize = mpsize.expandedTo(widget->minimumSize()).expandedTo(QSize(mw, mh)) - .boundedTo(maxsize); - QPoint mp(widget->geometry().right() - mpsize.width() + 1, - widget->geometry().bottom() - mpsize.height() + 1); - - QRect geom = widget->geometry(); - - switch (mode) { - case TopLeft: - geom = QRect(mp, widget->geometry().bottomRight()) ; - break; - case BottomRight: - geom = QRect(widget->geometry().topLeft(), p) ; - break; - case BottomLeft: - geom = QRect(QPoint(mp.x(), widget->geometry().y()), QPoint(widget->geometry().right(), p.y())) ; - break; - case TopRight: - geom = QRect(QPoint(widget->geometry().x(), mp.y()), QPoint(p.x(), widget->geometry().bottom())) ; - break; - case Top: - geom = QRect(QPoint(widget->geometry().left(), mp.y()), widget->geometry().bottomRight()) ; - break; - case Bottom: - geom = QRect(widget->geometry().topLeft(), QPoint(widget->geometry().right(), p.y())) ; - break; - case Left: - geom = QRect(QPoint(mp.x(), widget->geometry().top()), widget->geometry().bottomRight()) ; - break; - case Right: - geom = QRect(widget->geometry().topLeft(), QPoint(p.x(), widget->geometry().bottom())) ; - break; - case Center: - geom.moveTopLeft(pp); - break; - default: - break; - } - - geom = QRect(geom.topLeft(), - geom.size().expandedTo(widget->minimumSize()) - .expandedTo(QSize(mw, mh)) - .boundedTo(maxsize)); - - if (geom != widget->geometry() && - (widget->isWindow() || widget->parentWidget()->rect().intersects(geom))) { - if (mode == Center) - widget->move(geom.topLeft()); - else - widget->setGeometry(geom); - } - - QApplication::syncX(); -} - -void QWidgetResizeHandler::setMouseCursor(MousePosition m) -{ -#ifdef QT_NO_CURSOR - Q_UNUSED(m); -#else - QObjectList children = widget->children(); - for (int i = 0; i < children.size(); ++i) { - if (QWidget *w = qobject_cast<QWidget*>(children.at(i))) { - if (!w->testAttribute(Qt::WA_SetCursor) && !w->inherits("QWorkspaceTitleBar")) { - w->setCursor(Qt::ArrowCursor); - } - } - } - - switch (m) { - case TopLeft: - case BottomRight: - widget->setCursor(Qt::SizeFDiagCursor); - break; - case BottomLeft: - case TopRight: - widget->setCursor(Qt::SizeBDiagCursor); - break; - case Top: - case Bottom: - widget->setCursor(Qt::SizeVerCursor); - break; - case Left: - case Right: - widget->setCursor(Qt::SizeHorCursor); - break; - default: - widget->setCursor(Qt::ArrowCursor); - break; - } -#endif // QT_NO_CURSOR -} - -void QWidgetResizeHandler::keyPressEvent(QKeyEvent * e) -{ - if (!isMove() && !isResize()) - return; - bool is_control = e->modifiers() & Qt::ControlModifier; - int delta = is_control?1:8; - QPoint pos = QCursor::pos(); - switch (e->key()) { - case Qt::Key_Left: - pos.rx() -= delta; - if (pos.x() <= QApplication::desktop()->geometry().left()) { - if (mode == TopLeft || mode == BottomLeft) { - moveOffset.rx() += delta; - invertedMoveOffset.rx() += delta; - } else { - moveOffset.rx() -= delta; - invertedMoveOffset.rx() -= delta; - } - } - if (isResize() && !resizeHorizontalDirectionFixed) { - resizeHorizontalDirectionFixed = true; - if (mode == BottomRight) - mode = BottomLeft; - else if (mode == TopRight) - mode = TopLeft; -#ifndef QT_NO_CURSOR - setMouseCursor(mode); - widget->grabMouse(widget->cursor()); -#else - widget->grabMouse(); -#endif - } - break; - case Qt::Key_Right: - pos.rx() += delta; - if (pos.x() >= QApplication::desktop()->geometry().right()) { - if (mode == TopRight || mode == BottomRight) { - moveOffset.rx() += delta; - invertedMoveOffset.rx() += delta; - } else { - moveOffset.rx() -= delta; - invertedMoveOffset.rx() -= delta; - } - } - if (isResize() && !resizeHorizontalDirectionFixed) { - resizeHorizontalDirectionFixed = true; - if (mode == BottomLeft) - mode = BottomRight; - else if (mode == TopLeft) - mode = TopRight; -#ifndef QT_NO_CURSOR - setMouseCursor(mode); - widget->grabMouse(widget->cursor()); -#else - widget->grabMouse(); -#endif - } - break; - case Qt::Key_Up: - pos.ry() -= delta; - if (pos.y() <= QApplication::desktop()->geometry().top()) { - if (mode == TopLeft || mode == TopRight) { - moveOffset.ry() += delta; - invertedMoveOffset.ry() += delta; - } else { - moveOffset.ry() -= delta; - invertedMoveOffset.ry() -= delta; - } - } - if (isResize() && !resizeVerticalDirectionFixed) { - resizeVerticalDirectionFixed = true; - if (mode == BottomLeft) - mode = TopLeft; - else if (mode == BottomRight) - mode = TopRight; -#ifndef QT_NO_CURSOR - setMouseCursor(mode); - widget->grabMouse(widget->cursor()); -#else - widget->grabMouse(); -#endif - } - break; - case Qt::Key_Down: - pos.ry() += delta; - if (pos.y() >= QApplication::desktop()->geometry().bottom()) { - if (mode == BottomLeft || mode == BottomRight) { - moveOffset.ry() += delta; - invertedMoveOffset.ry() += delta; - } else { - moveOffset.ry() -= delta; - invertedMoveOffset.ry() -= delta; - } - } - if (isResize() && !resizeVerticalDirectionFixed) { - resizeVerticalDirectionFixed = true; - if (mode == TopLeft) - mode = BottomLeft; - else if (mode == TopRight) - mode = BottomRight; -#ifndef QT_NO_CURSOR - setMouseCursor(mode); - widget->grabMouse(widget->cursor()); -#else - widget->grabMouse(); -#endif - } - break; - case Qt::Key_Space: - case Qt::Key_Return: - case Qt::Key_Enter: - case Qt::Key_Escape: - moveResizeMode = false; - widget->releaseMouse(); - widget->releaseKeyboard(); - buttonDown = false; - break; - default: - return; - } - QCursor::setPos(pos); -} - - -void QWidgetResizeHandler::doResize() -{ - if (!activeForResize) - return; - - moveResizeMode = true; - moveOffset = widget->mapFromGlobal(QCursor::pos()); - if (moveOffset.x() < widget->width()/2) { - if (moveOffset.y() < widget->height()/2) - mode = TopLeft; - else - mode = BottomLeft; - } else { - if (moveOffset.y() < widget->height()/2) - mode = TopRight; - else - mode = BottomRight; - } - invertedMoveOffset = widget->rect().bottomRight() - moveOffset; -#ifndef QT_NO_CURSOR - setMouseCursor(mode); - widget->grabMouse(widget->cursor() ); -#else - widget->grabMouse(); -#endif - widget->grabKeyboard(); - resizeHorizontalDirectionFixed = false; - resizeVerticalDirectionFixed = false; -} - -void QWidgetResizeHandler::doMove() -{ - if (!activeForMove) - return; - - mode = Center; - moveResizeMode = true; - moveOffset = widget->mapFromGlobal(QCursor::pos()); - invertedMoveOffset = widget->rect().bottomRight() - moveOffset; -#ifndef QT_NO_CURSOR - widget->grabMouse(Qt::SizeAllCursor); -#else - widget->grabMouse(); -#endif - widget->grabKeyboard(); -} - -QT_END_NAMESPACE - -#endif //QT_NO_RESIZEHANDLER |