Files
cantata/widgets/icons.cpp

273 lines
9.1 KiB
C++

/*
* Cantata
*
* Copyright (c) 2011-2012 Craig Drummond <craig.p.drummond@gmail.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 2 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "icons.h"
#include <QtGui/QApplication>
#include <QtGui/QPixmap>
#include <QtGui/QFont>
#include <QtGui/QPainter>
#include <QtGui/QPalette>
#include <QtCore/QDir>
#include <math.h>
static QList<int> constStdSizes=QList<int>() << 16 << 22 << 32 << 48;
static QPixmap createSingleIconPixmap(int size, const QColor &col, double opacity)
{
QPixmap pix(size, size);
pix.fill(Qt::transparent);
QPainter p(&pix);
QFont font(QLatin1String("sans"));
font.setBold(false);
font.setItalic(false);
font.setPixelSize(size*0.9);
p.setFont(font);
p.setPen(col);
p.setOpacity(opacity);
p.setRenderHint(QPainter::Antialiasing, true);
p.drawText(QRect(0, 1, size, size), QLatin1String("1"), QTextOption(Qt::AlignHCenter|Qt::AlignVCenter));
p.drawText(QRect(1, 1, size, size), QLatin1String("1"), QTextOption(Qt::AlignHCenter|Qt::AlignVCenter));
p.drawText(QRect(-1, 1, size, size), QLatin1String("1"), QTextOption(Qt::AlignHCenter|Qt::AlignVCenter));
p.end();
return pix;
}
static QPixmap createConsumeIconPixmap(int size, const QColor &col, double opacity)
{
QPixmap pix(size, size);
pix.fill(Qt::transparent);
QPainter p(&pix);
p.setPen(QPen(col, size/10.0));
p.setOpacity(opacity);
p.setRenderHint(QPainter::Antialiasing, true);
QRectF rect(2.5, 2.5, size-4, size-4);
double distanceX=fabs(cos(35.0))*(rect.width()/2);
double distanceY=fabs(sin(35.0))*(rect.height()/2);
double midX=rect.x()+(rect.width()/2);
double midY=rect.y()+(rect.height()/2);
p.drawArc(rect, 40*16, 280*16);
p.drawLine(midX, midY, midX+distanceX, midY-distanceY);
p.drawLine(midX, midY, midX+distanceX, midY+distanceY);
p.drawPoint(midX, rect.y()+rect.height()/4);
p.end();
return pix;
}
static void calcIconColors(QColor &stdColor, QColor &highlightColor)
{
stdColor=QColor(QApplication::palette().color(QPalette::Active, QPalette::ButtonText));
if (stdColor==Qt::white) {
stdColor=QColor(200, 200, 200);
} else if (stdColor.red()<128 && stdColor.green()<128 && stdColor.blue()<128 &&
stdColor.red()==stdColor.green() && stdColor.green()==stdColor.blue()) {
stdColor=Qt::black;
}
highlightColor=stdColor.red()<100 ? stdColor.lighter(50) : stdColor.darker(50);
}
static Icon createIcon(bool isSingle, const QColor &stdColor, const QColor &highlightColor)
{
Icon icon;
foreach (int s, constStdSizes) {
icon.addPixmap(isSingle ? createSingleIconPixmap(s, stdColor, 1.0) : createConsumeIconPixmap(s, stdColor, 1.0));
icon.addPixmap(isSingle ? createSingleIconPixmap(s, stdColor, 0.5) : createConsumeIconPixmap(s, stdColor, 0.5), QIcon::Disabled);
icon.addPixmap(isSingle ? createSingleIconPixmap(s, highlightColor, 1.0) : createConsumeIconPixmap(s, highlightColor, 1.0), QIcon::Active);
}
return icon;
}
static unsigned char checkBounds(int num)
{
return num < 0 ? 0 : (num > 255 ? 255 : num);
}
static void adjustPix(unsigned char *data, int numChannels, int w, int h, int stride, int r, int g, int b, double opacity)
{
int width=w*numChannels,
offset=0;
for(int row=0; row<h; ++row) {
for(int column=0; column<width; column+=numChannels) {
unsigned char source=data[offset+column+1];
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
/* ARGB */
data[offset+column]*=opacity;
data[offset+column+1] = checkBounds(r-source);
data[offset+column+2] = checkBounds(g-source);
data[offset+column+3] = checkBounds(b-source);
#else
/* BGRA */
data[offset+column] = checkBounds(b-source);
data[offset+column+1] = checkBounds(g-source);
data[offset+column+2] = checkBounds(r-source);
data[offset+column+3]*=opacity;
#endif
}
offset+=stride;
}
}
static QPixmap recolour(const QImage &img, const QColor &col, double opacity)
{
QImage i=img;
if (i.depth()!=32) {
i=i.convertToFormat(QImage::Format_ARGB32);
}
adjustPix(i.bits(), 4, i.width(), i.height(), i.bytesPerLine(), col.red(), col.green(), col.blue(), opacity);
return QPixmap::fromImage(i);
}
static Icon createRecolourableIcon(const QString &name, const QColor &stdColor, const QColor &highlightColor)
{
if (QColor(Qt::black)==stdColor) {
// Text colour is black, so is icon, therefore no need to recolour!!!
return Icon::create(name, constStdSizes);
}
Icon icon;
foreach (int s, constStdSizes) {
QImage img(QChar(':')+name+QString::number(s));
if (!img.isNull()) {
icon.addPixmap(recolour(img, stdColor, 1.0));
icon.addPixmap(recolour(img, stdColor, 0.5), QIcon::Disabled);
icon.addPixmap(recolour(img, highlightColor, 1.0), QIcon::Active);
}
}
return icon;
}
#ifndef ENABLE_KDE_SUPPORT
Icon Icons::appIcon;
Icon Icons::shortcutsIcon;
#endif
Icon Icons::singleIcon;
Icon Icons::consumeIcon;
Icon Icons::repeatIcon;
Icon Icons::shuffleIcon;
Icon Icons::libraryIcon;
Icon Icons::wikiIcon;
Icon Icons::albumIcon;
Icon Icons::streamIcon;
Icon Icons::configureIcon;
Icon Icons::connectIcon;
Icon Icons::disconnectIcon;
Icon Icons::speakerIcon;
Icon Icons::lyricsIcon;
Icon Icons::dynamicIcon;
Icon Icons::playlistIcon;
Icon Icons::variousArtistsIcon;
Icon Icons::artistIcon;
Icon Icons::editIcon;
Icon Icons::clearListIcon;
Icon Icons::menuIcon;
void Icons::init()
{
QColor stdColor;
QColor highlightColor;
calcIconColors(stdColor, highlightColor);
singleIcon=createIcon(true, stdColor, highlightColor);
consumeIcon=createIcon(false, stdColor, highlightColor);
libraryIcon=Icon("cantata-view-media-library");
wikiIcon=Icon("cantata-view-wikipedia");
albumIcon=Icon("media-optical");
streamIcon=Icon("applications-internet");
configureIcon=Icon("configure");
connectIcon=Icon("dialog-ok");
disconnectIcon=Icon("media-eject");
speakerIcon=Icon("speaker");
lyricsIcon=Icon("view-media-lyrics");
dynamicIcon=Icon("media-playlist-shuffle");
playlistIcon=Icon("view-media-playlist");
variousArtistsIcon=Icon("cantata-view-media-artist-various");
artistIcon=Icon("view-media-artist");
editIcon=Icon("document-edit");
clearListIcon=Icon("edit-clear-list");
repeatIcon=createRecolourableIcon("repeat", stdColor, highlightColor);
shuffleIcon=createRecolourableIcon("shuffle", stdColor, highlightColor);
menuIcon=createRecolourableIcon("menu", stdColor, highlightColor);
#ifndef ENABLE_KDE_SUPPORT
appIcon=Icon::create("cantata", QList<int>() << 16 << 22 << 32 << 48 << 64);
shortcutsIcon=Icon("preferences-desktop-keyboard");
if (libraryIcon.isNull()) {
libraryIcon=Icon::create("lib", constStdSizes);
}
if (wikiIcon.isNull()) {
wikiIcon=Icon::create("wiki", constStdSizes);
}
if (variousArtistsIcon.isNull()) {
variousArtistsIcon=Icon::create("va", QList<int>() << 16 << 22 << 32 << 48 << 64 << 128);
}
if (artistIcon.isNull()) {
artistIcon=Icon::create("artist", QList<int>() << 16 << 22 << 32 << 48 << 64 << 128);
}
#ifndef Q_OS_WIN
if (shortcutsIcon.isNull()) {
shortcutsIcon=Icon("keyboard");
}
if (albumIcon.isNull()) {
albumIcon=Icon("media-optical-audio");
}
if (configureIcon.isNull()) {
configureIcon=Icon("gtk-preferences");
}
if (connectIcon.isNull()) {
connectIcon=Icon("gtk-stock-ok");
}
//if (disconnectIcon.isNull()) {
// disconnectIcon=Icon("media-eject");
//}
if (speakerIcon.isNull()) {
speakerIcon=Icon("audio-speakers");
if (speakerIcon.isNull()) {
speakerIcon=Icon("gnome-volume-control");
}
}
if (lyricsIcon.isNull()) {
lyricsIcon=Icon("text-x-generic");
}
if (dynamicIcon.isNull()) {
dynamicIcon=Icon("text-x-generic");
}
if (playlistIcon.isNull()) {
playlistIcon=Icon("audio-x-mp3-playlist");
if (playlistIcon.isNull()) {
playlistIcon=Icon("audio-x-generic");
}
}
if (editIcon.isNull()) {
editIcon=Icon("gtk-edit");
}
if (clearListIcon.isNull()) {
clearListIcon=Icon("edit-delete");
}
#endif // Q_OS_WIN
#endif // ENABLE_KDE_SUPPORT
}