mirror of https://github.com/qTox/qTox
146 lines
3.7 KiB
C++
146 lines
3.7 KiB
C++
/*
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Copyright (C) 2014 by Project Tox <https://tox.im>
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This file is part of qTox, a Qt-based graphical interface for Tox.
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This program is libre 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, either version 3 of the License, or
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(at your option) any later version.
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This program 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.
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See the COPYING file for more details.
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*/
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#include "maskablepixmapwidget.h"
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#include <QPainter>
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MaskablePixmapWidget::MaskablePixmapWidget(QWidget *parent, QSize size, QString maskName)
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: QWidget(parent)
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, maskName(maskName)
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, backgroundColor(Qt::white)
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, clickable(false)
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{
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setSize(size);
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}
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void MaskablePixmapWidget::autopickBackground()
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{
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QImage pic = pixmap.toImage();
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if (pic.isNull())
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return;
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int r = 0;
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int g = 0;
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int b = 0;
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int weight = 0;
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for (int x=0;x<pic.width();++x)
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{
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for (int y=0;y<pic.height();++y)
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{
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QRgb color = pic.pixel(x,y);
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r += qRed(color);
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g += qGreen(color);
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b += qBlue(color);
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weight += qAlpha(color);
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}
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}
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weight = qMax(1, weight / 255);
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r /= weight;
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g /= weight;
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b /= weight;
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QColor color = QColor::fromRgb(r,g,b);
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backgroundColor = QColor::fromRgb(0xFFFFFF ^ color.rgb());
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manualColor = false;
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update();
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}
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void MaskablePixmapWidget::setClickable(bool clickable)
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{
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this->clickable = clickable;
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if (clickable)
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setCursor(Qt::PointingHandCursor);
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else
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unsetCursor();
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}
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void MaskablePixmapWidget::setPixmap(const QPixmap &pmap, QColor background)
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{
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if (!pmap.isNull())
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{
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unscaled = pmap;
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pixmap = pmap.scaled(width() - 2, height() - 2, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);
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backgroundColor = background;
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manualColor = true;
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update();
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}
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}
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void MaskablePixmapWidget::setPixmap(const QPixmap &pmap)
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{
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if (!pmap.isNull())
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{
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unscaled = pmap;
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pixmap = pmap.scaled(width() - 2, height() - 2, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);
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autopickBackground();
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update();
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}
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}
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QPixmap MaskablePixmapWidget::getPixmap() const
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{
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return *renderTarget;
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}
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void MaskablePixmapWidget::setSize(QSize size)
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{
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setFixedSize(size);
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delete renderTarget;
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renderTarget = new QPixmap(size);
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QPixmap pmapMask = QPixmap(maskName);
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if (!pmapMask.isNull())
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mask = pmapMask.scaled(size, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
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if (!unscaled.isNull())
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{
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pixmap = unscaled.scaled(width() - 2, height() - 2, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation);
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if (!manualColor)
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autopickBackground();
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update();
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}
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}
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void MaskablePixmapWidget::paintEvent(QPaintEvent *)
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{
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renderTarget->fill(Qt::transparent);
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QPoint offset((width() - pixmap.size().width())/2,(height() - pixmap.size().height())/2); // centering the pixmap
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QPainter painter(renderTarget);
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painter.setCompositionMode(QPainter::CompositionMode_SourceOver);
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painter.fillRect(0,0,width(),height(),backgroundColor);
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painter.drawPixmap(offset,pixmap);
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painter.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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painter.drawPixmap(0,0,mask);
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painter.end();
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painter.begin(this);
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painter.drawPixmap(0,0,*renderTarget);
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}
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void MaskablePixmapWidget::mousePressEvent(QMouseEvent*)
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{
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if (clickable)
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emit clicked();
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}
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