diff options
Diffstat (limited to 'src/Authoring/Qt3DStudio/Palettes/scenecamera/scenecameraview.cpp')
| -rw-r--r-- | src/Authoring/Qt3DStudio/Palettes/scenecamera/scenecameraview.cpp | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/src/Authoring/Qt3DStudio/Palettes/scenecamera/scenecameraview.cpp b/src/Authoring/Qt3DStudio/Palettes/scenecamera/scenecameraview.cpp new file mode 100644 index 00000000..e153c0ad --- /dev/null +++ b/src/Authoring/Qt3DStudio/Palettes/scenecamera/scenecameraview.cpp @@ -0,0 +1,161 @@ +/**************************************************************************** +** +** Copyright (C) 2018 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt 3D Studio. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "scenecameraview.h" +#include "ui_scenecameraview.h" +#include "scenecameraglwidget.h" +#include "StudioApp.h" +#include "Core.h" +#include "StudioProjectSettings.h" +#include "MainFrm.h" +#include "PlayerWnd.h" +#include "MouseCursor.h" +#include "ResourceCache.h" + +#include <QtGui/qevent.h> +#include <QtWidgets/qscrollbar.h> + +const QPoint invalidMousePoint = QPoint(-999999, -999999); + +SceneCameraView::SceneCameraView(CMainFrame *mainFrame, QWidget *parent) : + QWidget(parent) + , m_ui(new Ui::SceneCameraView) + , m_mousePressPointLeft(invalidMousePoint) + , m_mousePressPointRight(invalidMousePoint) +{ + m_ui->setupUi(this); + + m_cursorPan = CResourceCache::GetInstance()->GetCursor(CMouseCursor::CURSOR_EDIT_CAMERA_PAN); + m_cursorZoom = CResourceCache::GetInstance()->GetCursor(CMouseCursor::CURSOR_EDIT_CAMERA_ZOOM); + + // Limit the preview framerate a bit to limit amount of updates when dragging the slider + m_updateTimer.setInterval(0); + m_updateTimer.setSingleShot(true); + + connect(m_ui->zoomSlider, &QSlider::valueChanged, + this, &SceneCameraView::handleSliderValueChange); + connect(mainFrame->GetPlayerWnd(), &CPlayerWnd::newFrame, + this, &SceneCameraView::requestUpdate); + connect(m_ui->scrollArea, &SceneCameraScrollArea::needUpdate, + this, &SceneCameraView::requestUpdate); + connect(&m_updateTimer, &QTimer::timeout, this, &SceneCameraView::doUpdate); +} + +SceneCameraView::~SceneCameraView() +{ + delete m_ui; +} + +void SceneCameraView::wheelEvent(QWheelEvent *e) +{ + m_zoomPoint = m_ui->scrollArea->viewport()->mapFrom(this, e->pos()); + int currentZoomValue = m_ui->zoomSlider->value(); + // Adjust amount of change based on zoom level + int divider = qMin(120, 1000 / currentZoomValue); + m_ui->zoomSlider->setValue(currentZoomValue + (e->angleDelta().y() / divider)); +} + +void SceneCameraView::resizeEvent(QResizeEvent *e) +{ + m_zoomPoint = m_ui->scrollArea->viewport()->geometry().center(); + + QWidget::resizeEvent(e); +} + +void SceneCameraView::mousePressEvent(QMouseEvent *e) +{ + // Ignore panning starting outside scrollarea + if (!m_ui->scrollArea->rect().contains(e->pos())) + return; + + // Panning can be done with left or middle button. Left is more natural and we don't need it + // for selection. Alt+middle pans in edit camera mode, so middle button is also supported for + // panning. + if (m_mousePressPointRight == invalidMousePoint + && (e->button() == Qt::LeftButton || e->button() == Qt::MidButton)) { + m_mousePressPointLeft = e->pos(); + m_mousePressScrollValues = QPoint(m_ui->scrollArea->horizontalScrollBar()->value(), + m_ui->scrollArea->verticalScrollBar()->value()); + setCursor(m_cursorPan); + } else if (m_mousePressPointLeft == invalidMousePoint && e->button() == Qt::RightButton) { + m_mousePressPointRight = e->pos(); + m_mousePressZoomValue = m_ui->zoomSlider->value(); + setCursor(m_cursorZoom); + } +} + +void SceneCameraView::mouseMoveEvent(QMouseEvent *e) +{ + if (m_mousePressPointLeft != invalidMousePoint) { + const QPoint delta = e->pos() - m_mousePressPointLeft; + m_ui->scrollArea->horizontalScrollBar()->setValue(m_mousePressScrollValues.x() - delta.x()); + m_ui->scrollArea->verticalScrollBar()->setValue(m_mousePressScrollValues.y() - delta.y()); + } + if (m_mousePressPointRight != invalidMousePoint) { + const qreal delta = qreal(e->pos().y() - m_mousePressPointRight.y()); + m_zoomPoint = m_mousePressPointRight; + m_ui->zoomSlider->setValue(m_mousePressZoomValue - delta / 2.0); + } +} + +void SceneCameraView::mouseReleaseEvent(QMouseEvent *e) +{ + if (m_mousePressPointLeft != invalidMousePoint + && e->button() == Qt::LeftButton || e->button() == Qt::MidButton) { + m_mousePressPointLeft = invalidMousePoint; + setCursor(Qt::ArrowCursor); + } else if (m_mousePressPointRight != invalidMousePoint) { + m_zoomPoint = m_ui->scrollArea->viewport()->geometry().center(); + m_mousePressPointRight = invalidMousePoint; + m_mousePressZoomValue = 0; + setCursor(Qt::ArrowCursor); + } +} + +void SceneCameraView::handleSliderValueChange() +{ + const qreal zoom = qreal(m_ui->zoomSlider->value()) / 10.0; + QString valueString = QString::number(zoom, 'f', 1); + m_ui->slideValueLabel->setText(tr("%1x").arg(valueString)); + m_ui->scrollArea->setZoom(zoom, m_zoomPoint); + m_zoomPoint = m_ui->scrollArea->viewport()->geometry().center(); +} + +void SceneCameraView::doUpdate() +{ + // There is no event for presentation size change, so update every frame to catch the change + m_ui->scrollArea->setPresentationSize( + g_StudioApp.GetCore()->GetStudioProjectSettings()->getPresentationSize()); + m_ui->scrollArea->glWidget()->update(); +} + +void SceneCameraView::requestUpdate() +{ + if (!m_updateTimer.isActive()) + m_updateTimer.start(); +} |