src/Gui/TagWidget.cpp

   1 /* Copyright (C) 2012 Mildred <mildred-pub@mildred.fr>
   2    Copyright (C) 2015 Erik Quaeghebeur <trojita@equaeghe.nospammail.net>
   3    Copyright (C) 2006 - 2015 Jan Kundrát <jkt@kde.org>
   4
   5    This file is part of the Trojita Qt IMAP e-mail client,
   6    http://trojita.flaska.net/
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2 of
  11    the License or (at your option) version 3 or any later version
  12    accepted by the membership of KDE e.V. (or its successor approved
  13    by the membership of KDE e.V.), which shall act as a proxy
  14    defined in Section 14 of version 3 of the license.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include <QEvent>
  26 #include <QMouseEvent>
  27 #include <QPainter>
  28 #include <QPair>
  29
  30 #include "UiUtils/Color.h"
  31
  32 #include "TagWidget.h"
  33
  34 namespace Gui
  35 {
  36
  37 static const QLatin1String closeIndicator(" | x");
  38
  39 TagWidget::TagWidget(const Mode mode, const QString &tagName, const QColor &backgroundColor):
  40     QLabel(),
  41     m_tagName(tagName),
  42     m_mode(mode),
  43     m_tint(backgroundColor),
  44     m_splitPos(0)
  45 {
  46     m_tint.setAlpha(m_tint.alpha()/3);
  47     setAlignment(Qt::AlignCenter);
  48     int l,t,r,b;
  49     getContentsMargins(&l, &t, &r, &b);
  50     setContentsMargins(l + 4, t, r + 4, b);
  51     if (m_mode == Mode::AddingWidget)
  52         setCursor(Qt::PointingHandCursor);
  53 }
  54
  55 TagWidget *TagWidget::addingWidget()
  56 {
  57     auto res = new TagWidget(Mode::AddingWidget, QString(), Qt::green);
  58     res->setText(tr("Tag", "This is a verb!"));
  59     return res;
  60 }
  61
  62 TagWidget *TagWidget::userKeyword(const QString &tagName, Imap::Mailbox::FavoriteTagsModel *m_favoriteTags)
  63 {
  64     QColor color = m_favoriteTags->findBestColorForTags({tagName});
  65     if (!color.isValid())
  66         color = Qt::yellow;
  67     auto res = new TagWidget(Mode::UserKeyword, tagName, color);
  68     res->setText(tagName + closeIndicator);
  69     res->setMouseTracking(true);
  70     return res;
  71 }
  72
  73 TagWidget *TagWidget::systemFlag(const QString &flagName)
  74 {
  75     auto res = new TagWidget(Mode::SystemFlag, flagName, Qt::gray);
  76     res->setText(flagName);
  77     return res;
  78 }
  79
  80 bool TagWidget::event(QEvent *e)
  81 {
  82     if (e->type() == QEvent::MouseMove) {
  83         if (m_mode == Mode::UserKeyword)
  84             setCursor(static_cast<QMouseEvent*>(e)->pos().x() > m_splitPos ? Qt::PointingHandCursor : Qt::ArrowCursor);
  85     } else if (e->type() == QEvent::Resize) {
  86         if (m_mode == Mode::UserKeyword)
  87             m_splitPos = contentsRect().right() - fontMetrics().width(closeIndicator);
  88     } else if (e->type() == QEvent::MouseButtonPress) {
  89         switch (m_mode) {
  90         case Mode::AddingWidget:
  91             emit addingClicked();
  92             return true;
  93         case Mode::UserKeyword: {
  94             Q_ASSERT(!m_tagName.isEmpty());
  95             if (static_cast<QMouseEvent*>(e)->pos().x() > m_splitPos) {
  96                 setDisabled(true);
  97                 setText(m_tagName);
  98                 setCursor(Qt::ArrowCursor);
  99                 setMouseTracking(false);
 100                 emit removeClicked(m_tagName);
 101             }
 102             return true;
 103         }
 104         case Mode::SystemFlag:
 105             // do nothing -- this is just an indicator
 106             break;
 107         }
 108     } else if (e->type() == QEvent::Paint) {
 109         if (isEnabled()) {
 110             QPainter p(this);
 111             p.setRenderHint(QPainter::Antialiasing);
 112             p.setBrush(UiUtils::tintColor(palette().color(QPalette::Active, backgroundRole()), m_tint));
 113             p.setPen(Qt::NoPen);
 114             const int rnd = qMin(width()/2, height()/4);
 115             p.drawRoundedRect(rect(), rnd, rnd);
 116             p.end();
 117         }
 118     }
 119
 120     return QLabel::event(e);
 121 }
 122
 123 QString TagWidget::tagName() const
 124 {
 125     return m_tagName;
 126 }
 127
 128 } // namespace Gui