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//===========================================
// Lumina-DE source code
// Copyright (c) 2016, Henry Hu
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#include "LDesktopBackground.h"
#include <QPainter>
void LDesktopBackground::paintEvent(QPaintEvent *pe) {
if (bgPixmap != NULL) {
QPainter painter(this);
painter.setBrush(*bgPixmap);
painter.drawRect(0, 0, width(), height());
}
}
void LDesktopBackground::setBackground(const QString& bgFile, const QString& format) {
if (bgPixmap != NULL) delete bgPixmap;
bgPixmap = new QPixmap(size());
if (bgFile.startsWith("rgb(")) {
QStringList colors = bgFile.section(")",0,0).section("(",1,1).split(",");
QColor color = QColor(colors[0].toInt(), colors[1].toInt(), colors[2].toInt());
bgPixmap->fill(color);
} else {
bgPixmap->fill(Qt::black);
// Load the background file and scale
QPixmap bgImage(bgFile);
if (format == "stretch" || format == "full" || format == "fit") {
Qt::AspectRatioMode mode;
if (format == "stretch") {
mode = Qt::IgnoreAspectRatio;
} else if (format == "full") {
mode = Qt::KeepAspectRatioByExpanding;
} else {
mode = Qt::KeepAspectRatio;
}
bgImage = bgImage.scaled(size(), mode);
}
// Calculate the offset
int dx = 0, dy = 0;
int drawWidth = bgImage.width(), drawHeight = bgImage.height();
if (format == "fit" || format == "center" || format == "full") {
dx = (width() - bgImage.width()) / 2;
dy = (height() - bgImage.height()) / 2;
} else if (format == "tile") {
drawWidth = width();
drawHeight = height();
} else {
if (format.endsWith("right")) {
dx = width() - bgImage.width();
}
if (format.startsWith("bottom")) {
dy = height() - bgImage.height();
}
}
// Draw the background image
QPainter painter(bgPixmap);
painter.setBrush(bgImage);
painter.setBrushOrigin(dx, dy);
painter.drawRect(dx, dy, drawWidth, drawHeight);
}
update();
show();
}
LDesktopBackground::LDesktopBackground() : QWidget() {
bgPixmap = NULL;
}
LDesktopBackground::~LDesktopBackground() {
if (bgPixmap != NULL) delete bgPixmap;
}
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