Some work about adaptive color scheme for Web UI (PR #19901) http://[316:c51a:62a3:8b9::4]/d4708/qBittorrent/src/branch/adaptive-webui
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/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2006 Christophe Dumez
*
* 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contact : chris@qbittorrent.org
*/
#ifndef PROPLISTDELEGATE_H
#define PROPLISTDELEGATE_H
#include <QItemDelegate>
#include <QStyleOptionProgressBarV2>
#include <QStyleOptionComboBox>
#include <QComboBox>
#include <QModelIndex>
#include <QPainter>
#include <QProgressBar>
#include <QApplication>
#include "misc.h"
// Defines for properties list columns
#define NAME 0
#define SIZE 1
#define PROGRESS 2
#define PRIORITY 3
#define IGNORED 0
#define NORMAL 1
#define HIGH 2
#define MAXIMUM 7
class PropListDelegate: public QItemDelegate {
Q_OBJECT
private:
bool* filteredFilesChanged;
public:
PropListDelegate(QObject *parent=0, bool* filteredFilesChanged=0) : QItemDelegate(parent){
this->filteredFilesChanged = filteredFilesChanged;
}
~PropListDelegate(){}
void paint(QPainter * painter, const QStyleOptionViewItem & option, const QModelIndex & index) const{
QStyleOptionViewItem opt = option;
char tmp[MAX_CHAR_TMP];
// set text color
QVariant value = index.data(Qt::TextColorRole);
if (value.isValid() && qvariant_cast<QColor>(value).isValid()){
opt.palette.setColor(QPalette::Text, qvariant_cast<QColor>(value));
}
QPalette::ColorGroup cg = option.state & QStyle::State_Enabled
? QPalette::Normal : QPalette::Disabled;
if (option.state & QStyle::State_Selected){
painter->setPen(opt.palette.color(cg, QPalette::HighlightedText));
}else{
painter->setPen(opt.palette.color(cg, QPalette::Text));
}
// draw the background color
if(index.column() != PROGRESS){
if (option.showDecorationSelected && (option.state & QStyle::State_Selected)){
if (cg == QPalette::Normal && !(option.state & QStyle::State_Active)){
cg = QPalette::Inactive;
}
painter->fillRect(option.rect, option.palette.brush(cg, QPalette::Highlight));
}else{
value = index.data(Qt::BackgroundColorRole);
if (value.isValid() && qvariant_cast<QColor>(value).isValid()){
painter->fillRect(option.rect, qvariant_cast<QColor>(value));
}
}
}
switch(index.column()){
case SIZE:
painter->drawText(option.rect, Qt::AlignCenter, misc::friendlyUnit(index.data().toLongLong()));
break;
case NAME:
painter->drawText(option.rect, Qt::AlignLeft, index.data().toString());
break;
case PROGRESS:{
QStyleOptionProgressBarV2 newopt;
float progress = index.data().toDouble()*100.;
snprintf(tmp, MAX_CHAR_TMP, "%.1f", progress);
newopt.rect = opt.rect;
newopt.text = QString(tmp)+"%";
newopt.progress = (int)progress;
newopt.maximum = 100;
newopt.minimum = 0;
newopt.state |= QStyle::State_Enabled;
newopt.textVisible = false;
QApplication::style()->drawControl(QStyle::CE_ProgressBar, &newopt,
painter);
//We prefer to display text manually to control color/font/boldness
if (option.state & QStyle::State_Selected){
opt.palette.setColor(QPalette::Text, QColor("grey"));
painter->setPen(opt.palette.color(cg, QPalette::Text));
}
painter->drawText(option.rect, Qt::AlignCenter, newopt.text);
break;
}
case PRIORITY:{
QStyleOptionComboBox newopt;
newopt.rect = opt.rect;
switch(index.data().toInt()){
case IGNORED:
newopt.currentText = tr("Ignored");
break;
case NORMAL:
newopt.currentText = tr("Normal", "Normal (priority)");
break;
case HIGH:
newopt.currentText = tr("High", "High (priority)");
break;
case MAXIMUM:
newopt.currentText = tr("Maximum", "Maximum (priority)");
break;
default:
qDebug("Unhandled priority, setting NORMAL");
newopt.currentText = tr("Normal", "Normal (priority)");
}
newopt.state |= QStyle::State_Enabled;
QApplication::style()->drawComplexControl(QStyle::CC_ComboBox, &newopt,
painter);
opt.palette.setColor(QPalette::Text, QColor("black"));
painter->setPen(opt.palette.color(cg, QPalette::Text));
painter->drawText(option.rect, Qt::AlignLeft, " "+newopt.currentText);
break;
}
default:
painter->drawText(option.rect, Qt::AlignCenter, index.data().toString());
}
}
QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &/* option */, const QModelIndex & index) const {
if(index.column() != PRIORITY) return 0;
if(onlyOneItem(index)) return 0;
QComboBox* editor = new QComboBox(parent);
editor->setFocusPolicy(Qt::StrongFocus);
editor->addItem(tr("Ignored"));
editor->addItem(tr("Normal", "Normal (priority)"));
editor->addItem(tr("High", "High (priority)"));
editor->addItem(tr("Maximum", "Maximum (priority)"));
return editor;
}
void setEditorData(QWidget *editor, const QModelIndex &index) const {
unsigned short val = index.model()->data(index, Qt::DisplayRole).toInt();
QComboBox *combobox = static_cast<QComboBox*>(editor);
switch(val){
case IGNORED:
combobox->setCurrentIndex(0);
break;
case NORMAL:
combobox->setCurrentIndex(1);
break;
case HIGH:
combobox->setCurrentIndex(2);
break;
case MAXIMUM:
combobox->setCurrentIndex(3);
break;
default:
qDebug("Unhandled priority, setting to NORMAL");
combobox->setCurrentIndex(1);
}
}
QSize sizeHint(const QStyleOptionViewItem & option, const QModelIndex & index) const{
QVariant value = index.data(Qt::FontRole);
QFont fnt = value.isValid() ? qvariant_cast<QFont>(value) : option.font;
QFontMetrics fontMetrics(fnt);
const QString text = index.data(Qt::DisplayRole).toString();
QRect textRect = QRect(0, 0, 0, fontMetrics.lineSpacing() * (text.count(QLatin1Char('\n')) + 1));
return textRect.size();
}
bool onlyOneItem(const QModelIndex& index) const {
const QAbstractItemModel *model = index.model();
unsigned int nbRows = model->rowCount();
if(nbRows == (unsigned int)1) return true;
for(unsigned int i=0; i<nbRows; ++i){
if((unsigned int)index.row() == i) continue;
if(model->data(model->index(i, PRIORITY)).toInt()) return false;
}
return true;
}
public slots:
void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const {
QComboBox *combobox = static_cast<QComboBox*>(editor);
int value = combobox->currentIndex();
qDebug("Setting combobox value in index: %d", value);
QString color;
if(value) {
color = "green";
} else {
color = "red";
}
unsigned short old_val = index.model()->data(index, Qt::DisplayRole).toInt();
switch(value){
case 0:
if(old_val != IGNORED){
model->setData(index, QVariant(IGNORED));
if(filteredFilesChanged != 0)
*filteredFilesChanged = true;
}
break;
case 1:
if(old_val != NORMAL){
model->setData(index, QVariant(NORMAL));
if(filteredFilesChanged != 0)
*filteredFilesChanged = true;
}
break;
case 2:
if(old_val != HIGH){
model->setData(index, QVariant(HIGH));
if(filteredFilesChanged != 0)
*filteredFilesChanged = true;
}
break;
case 3:
if(old_val != MAXIMUM){
model->setData(index, QVariant(MAXIMUM));
if(filteredFilesChanged != 0)
*filteredFilesChanged = true;
}
break;
default:
if(old_val != NORMAL){
model->setData(index, QVariant(NORMAL));
if(filteredFilesChanged != 0)
*filteredFilesChanged = true;
}
}
for(int i=0; i<model->columnCount(); ++i){
model->setData(model->index(index.row(), i), QVariant(QColor(color)), Qt::TextColorRole);
}
}
void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &/* index */) const {
editor->setGeometry(option.rect);
}
};
#endif