239 lines
7.3 KiB
C++
239 lines
7.3 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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*
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* Strawberry is free 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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*
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* Strawberry 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. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <utility>
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#include <QtGlobal>
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#include <QWidget>
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#include <QList>
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#include <QString>
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#include <QImage>
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#include <QFont>
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#include <QFontMetrics>
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#include <QPainter>
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#include <QPainterPath>
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#include <QPalette>
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#include <QColor>
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#include <QBrush>
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#include <QPen>
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#include <QPoint>
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#include <QRect>
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#include <QSize>
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#include <QTransform>
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#include <QLinearGradient>
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#include "utilities/strutils.h"
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#include "freespacebar.h"
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class QPaintEvent;
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const int FreeSpaceBar::kBarHeight = 20;
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const int FreeSpaceBar::kBarBorderRadius = 8;
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const int FreeSpaceBar::kMarkerSpacing = 32;
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const int FreeSpaceBar::kLabelBoxSize = 12;
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const int FreeSpaceBar::kLabelBoxPadding = 4;
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const int FreeSpaceBar::kLabelSpacing = 16;
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const QRgb FreeSpaceBar::kColorBg1 = qRgb(214, 207, 200);
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const QRgb FreeSpaceBar::kColorBg2 = qRgb(234, 226, 218);
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const QRgb FreeSpaceBar::kColorAdd1 = qRgb(136, 180, 229);
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const QRgb FreeSpaceBar::kColorAdd2 = qRgb(72, 146, 229);
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const QRgb FreeSpaceBar::kColorBar1 = qRgb(250, 148, 76);
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const QRgb FreeSpaceBar::kColorBar2 = qRgb(214, 102, 24);
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const QRgb FreeSpaceBar::kColorBorder = qRgb(174, 168, 162);
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FreeSpaceBar::FreeSpaceBar(QWidget *parent)
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: QWidget(parent),
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free_(100),
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additional_(0),
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total_(100),
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free_text_(tr("Available")),
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additional_text_(tr("New songs")),
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used_text_(tr("Used")) {
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setMinimumHeight(FreeSpaceBar::sizeHint().height());
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}
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QSize FreeSpaceBar::sizeHint() const {
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return QSize(150, kBarHeight + kLabelBoxPadding + fontMetrics().height());
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}
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void FreeSpaceBar::paintEvent(QPaintEvent*) {
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// Geometry
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QRect bar_rect(rect());
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bar_rect.setHeight(kBarHeight);
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QRect reflection_rect(bar_rect);
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reflection_rect.moveTop(reflection_rect.bottom());
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QRect labels_rect(rect());
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labels_rect.setTop(labels_rect.top() + kBarHeight + kLabelBoxPadding);
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// Draw the reflection
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// Create the reflected pixmap
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QImage reflection(reflection_rect.size(), QImage::Format_ARGB32_Premultiplied);
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reflection.fill(palette().color(QPalette::Window).rgba());
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QPainter p(&reflection);
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// Set up the transformation
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QTransform transform;
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transform.scale(1.0, -1.0);
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transform.translate(0.0, -reflection.height());
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p.setTransform(transform);
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// Draw the bar
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DrawBar(&p, QRect(QPoint(0, 0), reflection.size()));
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// Make it fade out towards the bottom
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QLinearGradient fade_gradient(reflection.rect().topLeft(), reflection.rect().bottomLeft());
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fade_gradient.setColorAt(0.0, QColor(0, 0, 0, 0));
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fade_gradient.setColorAt(1.0, QColor(0, 0, 0, 128));
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p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
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p.fillRect(reflection.rect(), fade_gradient);
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p.end();
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// Draw on the widget
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p.begin(this);
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DrawBar(&p, bar_rect);
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p.drawImage(reflection_rect, reflection);
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DrawText(&p, labels_rect);
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}
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void FreeSpaceBar::DrawBar(QPainter *p, const QRect r) {
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p->setRenderHint(QPainter::Antialiasing, true);
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QRect bar_rect(r);
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bar_rect.setWidth(static_cast<int>(static_cast<float>(bar_rect.width()) * (static_cast<float>(total_ - free_) / static_cast<float>(total_))));
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QLinearGradient background_gradient(r.topLeft(), r.bottomLeft());
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background_gradient.setColorAt(0, kColorBg1);
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background_gradient.setColorAt(1, kColorBg2);
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QLinearGradient bar_gradient(bar_rect.topLeft(), bar_rect.bottomLeft());
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bar_gradient.setColorAt(0, kColorBar1);
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bar_gradient.setColorAt(1, kColorBar2);
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// Draw the background
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p->setPen(Qt::NoPen);
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p->setBrush(background_gradient);
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p->drawRoundedRect(r, kBarBorderRadius, kBarBorderRadius);
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// Create a path to use for clipping the bars
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QPainterPath clip_path;
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clip_path.addRoundedRect(r, kBarBorderRadius, kBarBorderRadius);
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p->setClipPath(clip_path);
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// Draw any additional space
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if (additional_ > 0) {
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QRect additional_rect(bar_rect);
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additional_rect.setLeft(bar_rect.right());
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additional_rect.setWidth(static_cast<int>(static_cast<float>(r.width()) * (static_cast<float>(qMin(free_, additional_)) / static_cast<float>(total_)) + 1.0F));
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QLinearGradient additional_gradient(additional_rect.topLeft(), additional_rect.bottomLeft());
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additional_gradient.setColorAt(0, kColorAdd1);
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additional_gradient.setColorAt(1, kColorAdd2);
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p->fillRect(additional_rect, additional_gradient);
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}
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// Draw the bar foreground
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p->fillRect(bar_rect, bar_gradient);
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// Draw a border
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p->setClipping(false);
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p->setPen(kColorBorder);
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p->setBrush(Qt::NoBrush);
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p->drawRoundedRect(r, kBarBorderRadius, kBarBorderRadius);
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// Draw marker lines over the top every few pixels
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p->setOpacity(0.35);
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p->setRenderHint(QPainter::Antialiasing, false);
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p->setPen(QPen(palette().color(QPalette::Light), 1.0));
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for (int x = r.left() + kMarkerSpacing; x < r.right(); x += kMarkerSpacing) {
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p->drawLine(x, r.top() + 2, x, r.bottom() - 2);
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}
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p->setOpacity(1.0);
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}
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void FreeSpaceBar::DrawText(QPainter *p, const QRect r) {
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QFont small_font(font());
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small_font.setPointSize(small_font.pointSize() - 1);
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small_font.setBold(true);
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QFontMetrics small_metrics(small_font);
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p->setFont(small_font);
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// Work out the geometry for the text
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QList<Label> labels;
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labels << Label(TextForSize(used_text_, total_ - free_), kColorBar1);
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if (additional_ > 0) {
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labels << Label(TextForSize(additional_text_, additional_), kColorAdd1);
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}
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labels << Label(TextForSize(free_text_, free_ - additional_), kColorBg2);
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int text_width = 0;
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for (const Label &label : std::as_const(labels)) {
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text_width += kLabelBoxSize + kLabelBoxPadding + kLabelSpacing + small_metrics.horizontalAdvance(label.text);
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}
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// Draw the text
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int x = (r.width() - text_width) / 2;
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p->setRenderHint(QPainter::Antialiasing, false);
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for (const Label &label : std::as_const(labels)) {
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const bool light = palette().color(QPalette::Base).value() > 128;
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QRect box(x, r.top() + (r.height() - kLabelBoxSize) / 2, kLabelBoxSize, kLabelBoxSize);
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p->setPen(label.color.darker());
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p->setBrush(label.color);
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p->drawRect(box);
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QRect text(x + kLabelBoxSize + kLabelBoxPadding, r.top(), small_metrics.horizontalAdvance(label.text), r.height());
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p->setPen(light ? label.color.darker() : label.color);
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p->drawText(text, Qt::AlignCenter, label.text);
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x += kLabelBoxSize + kLabelBoxPadding + kLabelSpacing + small_metrics.horizontalAdvance(label.text);
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}
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}
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QString FreeSpaceBar::TextForSize(const QString &prefix, const quint64 size) {
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QString ret;
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if (size > 0) {
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ret = Utilities::PrettySize(size);
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}
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else {
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ret = QStringLiteral("0 MB");
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}
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if (!prefix.isEmpty()) ret.prepend(prefix + QLatin1Char(' '));
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return ret;
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}
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