| /************************************************************************** |
| * Copyright (C) 2019-2019 by Savoir-faire Linux * |
| * Author: Isa Nanic <isa.nanic@savoirfairelinux.com> * |
| * * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License as published by * |
| * the Free Software Foundation; either version 3 of the License, or * |
| * (at your option) any later version. * |
| * * |
| * This program is distributed in the hope that it will be useful, * |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| * GNU General Public License for more details. * |
| * * |
| * You should have received a copy of the GNU General Public License * |
| * along with this program. If not, see <https://www.gnu.org/licenses/>. * |
| **************************************************************************/ |
| |
| #include "avatargraphicsview.h" |
| |
| AvatarGraphicsView::AvatarGraphicsView(QWidget* parent) |
| : QGraphicsView(parent) |
| { |
| setDragMode(QGraphicsView::ScrollHandDrag); |
| } |
| |
| void |
| AvatarGraphicsView::wheelEvent(QWheelEvent* event) |
| { |
| QPoint numSteps = event->angleDelta() / (8*15); |
| |
| if (!numSteps.isNull()) { |
| zoomImage(numSteps); |
| } |
| event->accept(); |
| } |
| |
| void |
| AvatarGraphicsView::zoomImage(const QPoint& steps) |
| { |
| steps.y() == 1 ? scale(zoomIncrement_, zoomIncrement_) : scale(1 / zoomIncrement_, 1 / zoomIncrement_); |
| } |
| |
| void |
| AvatarGraphicsView::paintEvent(QPaintEvent* e) |
| { |
| QGraphicsView::paintEvent(e); |
| QPainter painter(viewport()); |
| |
| QPainterPath square; |
| QPainterPath circle; |
| |
| square.addRect(0, 0, width(), height()); |
| circle.addEllipse(QPoint(width() / 2 - 0.5, height() / 2 - 0.5), circleSize_ + 1, circleSize_ + 1); |
| |
| painter.setOpacity(0.3); |
| |
| painter.fillPath(square.subtracted(circle), QBrush(QColor(Qt::black))); |
| } |