kfile/kurlbutton.cpp

   1 /*****************************************************************************
   2  * Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                      *
   3  * Copyright (C) 2006 by Aaron J. Seigo <aseigo@kde.org>                     *
   4  *                                                                           *
   5  * This library is free software; you can redistribute it and/or             *
   6  * modify it under the terms of the GNU Library General Public               *
   7  * License version 2 as published by the Free Software Foundation.           *
   8  *                                                                           *
   9  * This library is distributed in the hope that it will be useful,           *
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  12  * Library General Public License for more details.                          *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Library General Public License *
  15  * along with this library; see the file COPYING.LIB.  If not, write to      *
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,      *
  17  * Boston, MA 02110-1301, USA.                                               *
  18  *****************************************************************************/
  19
  20 #include "kurlbutton_p.h"
  21
  22 #include "kurlnavigator.h"
  23
  24 #include <kcolorscheme.h>
  25 #include <kicon.h>
  26 #include <klocale.h>
  27 #include <kmenu.h>
  28
  29 #include <QApplication>
  30 #include <QClipboard>
  31 #include <QMimeData>
  32 #include <QStyle>
  33 #include <QStyleOptionFocusRect>
  34
  35 KUrlButton::KUrlButton(KUrlNavigator* parent) :
  36     QPushButton(parent),
  37     m_displayHint(0),
  38     m_urlNavigator(parent)
  39 {
  40     setFocusPolicy(Qt::NoFocus);
  41     setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
  42     setMinimumHeight(parent->minimumHeight());
  43
  44     connect(this, SIGNAL(pressed()), parent, SLOT(requestActivation()));
  45 }
  46
  47 KUrlButton::~KUrlButton()
  48 {
  49 }
  50
  51 void KUrlButton::setDisplayHintEnabled(DisplayHint hint,
  52                                        bool enable)
  53 {
  54     if (enable) {
  55         m_displayHint = m_displayHint | hint;
  56     } else {
  57         m_displayHint = m_displayHint & ~hint;
  58     }
  59     update();
  60 }
  61
  62 bool KUrlButton::isDisplayHintEnabled(DisplayHint hint) const
  63 {
  64     return (m_displayHint & hint) > 0;
  65 }
  66
  67 void KUrlButton::enterEvent(QEvent* event)
  68 {
  69     QPushButton::enterEvent(event);
  70     setDisplayHintEnabled(EnteredHint, true);
  71     update();
  72 }
  73
  74 void KUrlButton::leaveEvent(QEvent* event)
  75 {
  76     QPushButton::leaveEvent(event);
  77     setDisplayHintEnabled(EnteredHint, false);
  78     update();
  79 }
  80
  81 void KUrlButton::contextMenuEvent(QContextMenuEvent* event)
  82 {
  83     Q_UNUSED(event);
  84     m_urlNavigator->requestActivation();
  85
  86     KMenu popup(this);
  87
  88     // provide 'Copy' action, which copies the current URL of
  89     // the URL navigator into the clipboard
  90     QAction* copyAction = popup.addAction(KIcon("edit-copy"), i18n("Copy"));
  91
  92     // provide 'Paste' action, which copies the current clipboard text
  93     // into the URL navigator
  94     QAction* pasteAction = popup.addAction(KIcon("edit-paste"), i18n("Paste"));
  95     QClipboard* clipboard = QApplication::clipboard();
  96     pasteAction->setEnabled(!clipboard->text().isEmpty());
  97
  98     popup.addSeparator();
  99
 100     // provide radiobuttons for toggling between the edit and the navigation mode
 101     QAction* editAction = popup.addAction(i18n("Edit"));
 102     editAction->setCheckable(true);
 103
 104     QAction* navigateAction = popup.addAction(i18n("Navigate"));
 105     navigateAction->setCheckable(true);
 106
 107     QActionGroup* modeGroup = new QActionGroup(&popup);
 108     modeGroup->addAction(editAction);
 109     modeGroup->addAction(navigateAction);
 110     if (m_urlNavigator->isUrlEditable()) {
 111         editAction->setChecked(true);
 112     } else {
 113         navigateAction->setChecked(true);
 114     }
 115
 116     popup.addSeparator();
 117
 118     // allow showing of the full path
 119     QAction* showFullPathAction = popup.addAction(i18n("Show Full Path"));
 120     showFullPathAction->setCheckable(true);
 121     showFullPathAction->setChecked(m_urlNavigator->showFullPath());
 122
 123     QAction* activatedAction = popup.exec(QCursor::pos());
 124     if (activatedAction == copyAction) {
 125         QMimeData* mimeData = new QMimeData();
 126         mimeData->setText(m_urlNavigator->url().prettyUrl());
 127         clipboard->setMimeData(mimeData);
 128     } else if (activatedAction == pasteAction) {
 129         m_urlNavigator->setUrl(KUrl(clipboard->text()));
 130     } else if (activatedAction == editAction) {
 131         m_urlNavigator->setUrlEditable(true);
 132     } else if (activatedAction == navigateAction) {
 133         m_urlNavigator->setUrlEditable(false);
 134     } else if (activatedAction == showFullPathAction) {
 135         m_urlNavigator->setShowFullPath(showFullPathAction->isChecked());
 136     }
 137 }
 138
 139 void KUrlButton::drawHoverBackground(QPainter* painter)
 140 {
 141     const bool isHighlighted = isDisplayHintEnabled(EnteredHint) ||
 142                                isDisplayHintEnabled(DraggedHint) ||
 143                                isDisplayHintEnabled(PopupActiveHint);
 144
 145     QColor backgroundColor = isHighlighted ? palette().color(QPalette::Highlight) : Qt::transparent;
 146     if (!urlNavigator()->isActive() && isHighlighted) {
 147         backgroundColor.setAlpha(128);
 148     }
 149
 150     if (backgroundColor != Qt::transparent) {
 151         // TODO: the backgroundColor should be applied to the style
 152         QStyleOptionViewItemV4 option;
 153         option.initFrom(this);
 154         option.state = QStyle::State_Enabled | QStyle::State_MouseOver;
 155         option.viewItemPosition = QStyleOptionViewItemV4::OnlyOne;
 156         style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, this);
 157     }
 158 }
 159
 160 QColor KUrlButton::foregroundColor() const
 161 {
 162     const bool isHighlighted = isDisplayHintEnabled(EnteredHint) ||
 163                                isDisplayHintEnabled(DraggedHint) ||
 164                                isDisplayHintEnabled(PopupActiveHint);
 165
 166     QColor foregroundColor = palette().color(foregroundRole());
 167     const bool isActive = m_urlNavigator->isActive();
 168
 169     int alpha = isActive ? 255 : 128;
 170     if ((!isDisplayHintEnabled(ActivatedHint) || !isActive) && !isHighlighted) {
 171         alpha -= alpha / 4;
 172     }
 173     foregroundColor.setAlpha(alpha);
 174
 175     return foregroundColor;
 176 }
 177
 178 #include "kurlbutton_p.moc"