diff options
Diffstat (limited to 'src/tooltipmanager.cpp')
| -rw-r--r-- | src/tooltipmanager.cpp | 307 |
1 files changed, 0 insertions, 307 deletions
diff --git a/src/tooltipmanager.cpp b/src/tooltipmanager.cpp deleted file mode 100644 index aefa846e9..000000000 --- a/src/tooltipmanager.cpp +++ /dev/null @@ -1,307 +0,0 @@ -/******************************************************************************* - * Copyright (C) 2008 by Konstantin Heil <[email protected]> * - * * - * 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 * - *******************************************************************************/ - -#include "tooltipmanager.h" - -#include "dolphintooltip.h" -#include "dolphinmodel.h" -#include "dolphinsortfilterproxymodel.h" - -#include <kicon.h> -#include <ktooltip.h> -#include <kio/previewjob.h> - -#include <QApplication> -#include <QDesktopWidget> -#include <QScrollBar> -#include <QTimer> -#include <QToolTip> - -const int ICON_WIDTH = 128; -const int ICON_HEIGHT = 128; -const int PREVIEW_DELAY = 250; - -K_GLOBAL_STATIC(DolphinBalloonTooltipDelegate, g_delegate) - -ToolTipManager::ToolTipManager(QAbstractItemView* parent, - DolphinSortFilterProxyModel* model) : - QObject(parent), - m_view(parent), - m_dolphinModel(0), - m_proxyModel(model), - m_timer(0), - m_previewTimer(0), - m_waitOnPreviewTimer(0), - m_item(), - m_itemRect(), - m_preview(false), - m_generatingPreview(false), - m_previewIsLate(false), - m_previewPass(0), - m_emptyRenderedKToolTipItem(0), - m_pix() -{ - KToolTip::setToolTipDelegate(g_delegate); - - m_dolphinModel = static_cast<DolphinModel*>(m_proxyModel->sourceModel()); - connect(parent, SIGNAL(entered(const QModelIndex&)), - this, SLOT(requestToolTip(const QModelIndex&))); - connect(parent, SIGNAL(viewportEntered()), - this, SLOT(hideToolTip())); - - m_timer = new QTimer(this); - m_timer->setSingleShot(true); - connect(m_timer, SIGNAL(timeout()), - this, SLOT(prepareToolTip())); - - m_previewTimer = new QTimer(this); - m_previewTimer->setSingleShot(true); - connect(m_previewTimer, SIGNAL(timeout()), - this, SLOT(startPreviewJob())); - - m_waitOnPreviewTimer = new QTimer(this); - m_waitOnPreviewTimer->setSingleShot(true); - connect(m_waitOnPreviewTimer, SIGNAL(timeout()), - this, SLOT(prepareToolTip())); - - // When the mousewheel is used, the items don't get a hovered indication - // (Qt-issue #200665). To assure that the tooltip still gets hidden, - // the scrollbars are observed. - connect(parent->horizontalScrollBar(), SIGNAL(valueChanged(int)), - this, SLOT(hideTip())); - connect(parent->verticalScrollBar(), SIGNAL(valueChanged(int)), - this, SLOT(hideTip())); - - m_view->viewport()->installEventFilter(this); -} - -ToolTipManager::~ToolTipManager() -{ -} - -void ToolTipManager::hideTip() -{ - hideToolTip(); -} - -bool ToolTipManager::eventFilter(QObject* watched, QEvent* event) -{ - if ((watched == m_view->viewport()) && (event->type() == QEvent::Leave)) { - hideToolTip(); - } - - return QObject::eventFilter(watched, event); -} - -void ToolTipManager::requestToolTip(const QModelIndex& index) -{ - // only request a tooltip for the name column and when no selection or - // drag & drop operation is done (indicated by the left mouse button) - if ((index.column() == DolphinModel::Name) && !(QApplication::mouseButtons() & Qt::LeftButton)) { - m_waitOnPreviewTimer->stop(); - KToolTip::hideTip(); - - m_itemRect = m_view->visualRect(index); - const QPoint pos = m_view->viewport()->mapToGlobal(m_itemRect.topLeft()); - m_itemRect.moveTo(pos); - - const QModelIndex dirIndex = m_proxyModel->mapToSource(index); - m_item = m_dolphinModel->itemForIndex(dirIndex); - - // only start the previewJob when the mouse has been over this item for 200 milliseconds, - // this prevents a lot of useless preview jobs when passing rapidly over a lot of items - m_previewTimer->start(200); - m_preview = false; - m_previewIsLate = false; - m_previewPass = 0; - - m_timer->start(500); - } else { - hideToolTip(); - } -} - -void ToolTipManager::hideToolTip() -{ - m_timer->stop(); - m_previewTimer->stop(); - m_waitOnPreviewTimer->stop(); - m_previewIsLate = false; - KToolTip::hideTip(); -} - -void ToolTipManager::prepareToolTip() -{ - if (m_generatingPreview) { - if (m_previewPass == 1) { - // We waited 250msec and the preview is still not finished, - // so show the toolTip with a transparent image of maximal width. - // When the preview finishes, m_previewIsLate will cause - // a direct update of the tooltip, via m_emptyRenderedKToolTipItem. - QPixmap paddedImage(QSize(PREVIEW_WIDTH, 32)); - m_previewIsLate = true; - paddedImage.fill(Qt::transparent); - KToolTipItem* toolTip = new KToolTipItem(paddedImage, m_item.getToolTipText()); - m_emptyRenderedKToolTipItem = toolTip; // make toolTip accessible everywhere - showToolTip(toolTip); - } - - ++m_previewPass; - m_waitOnPreviewTimer->start(250); - } else { - // The preview generation has finished, find out under which circumstances. - if (m_preview && m_previewIsLate) { - // We got a preview, but it is late, the tooltip has already been shown. - // So update the tooltip directly. - if (m_emptyRenderedKToolTipItem != 0) { - m_emptyRenderedKToolTipItem->setData(Qt::DecorationRole, KIcon(m_pix)); - } - return; - } - - KIcon icon; - if (m_preview) { - // We got a preview. - icon = KIcon(m_pix); - } else { - // No preview, so use an icon. - // Force a 128x128 icon, a 256x256 one is far too big. - icon = KIcon(KIcon(m_item.iconName()).pixmap(ICON_WIDTH, ICON_HEIGHT)); - } - - KToolTipItem* toolTip = new KToolTipItem(icon, m_item.getToolTipText()); - showToolTip(toolTip); - } -} - -void ToolTipManager::showToolTip(KToolTipItem* tip) -{ - if (QApplication::mouseButtons() & Qt::LeftButton) { - delete tip; - tip = 0; - // m_emptyRenderedKToolTipItem is an alias for tip. - m_emptyRenderedKToolTipItem = 0; - return; - } - - KStyleOptionToolTip option; - // TODO: get option content from KToolTip or add KToolTip::sizeHint() method - option.direction = QApplication::layoutDirection(); - option.fontMetrics = QFontMetrics(QToolTip::font()); - option.activeCorner = KStyleOptionToolTip::TopLeftCorner; - option.palette = QToolTip::palette(); - option.font = QToolTip::font(); - option.rect = QRect(); - option.state = QStyle::State_None; - option.decorationSize = QSize(32, 32); - - QSize size; - if (m_previewIsLate) { - QPixmap paddedImage(QSize(PREVIEW_WIDTH, PREVIEW_HEIGHT)); - KToolTipItem* maxiTip = new KToolTipItem(paddedImage, m_item.getToolTipText()); - size = g_delegate->sizeHint(&option, maxiTip); - delete maxiTip; - maxiTip = 0; - } - else { - size = g_delegate->sizeHint(&option, tip); - } - const QRect desktop = QApplication::desktop()->screenGeometry(m_itemRect.bottomRight()); - - // m_itemRect defines the area of the item, where the tooltip should be - // shown. Per default the tooltip is shown in the bottom right corner. - // If the tooltip content exceeds the desktop borders, it must be assured that: - // - the content is fully visible - // - the content is not drawn inside m_itemRect - const bool hasRoomToLeft = (m_itemRect.left() - size.width() >= desktop.left()); - const bool hasRoomToRight = (m_itemRect.right() + size.width() <= desktop.right()); - const bool hasRoomAbove = (m_itemRect.top() - size.height() >= desktop.top()); - const bool hasRoomBelow = (m_itemRect.bottom() + size.height() <= desktop.bottom()); - if (!hasRoomAbove && !hasRoomBelow && !hasRoomToLeft && !hasRoomToRight) { - delete tip; - tip = 0; - return; - } - - int x = 0; - int y = 0; - if (hasRoomBelow || hasRoomAbove) { - x = QCursor::pos().x() + 16; // TODO: use mouse pointer width instead of the magic value of 16 - if (x + size.width() >= desktop.right()) { - x = desktop.right() - size.width(); - } - y = hasRoomBelow ? m_itemRect.bottom() : m_itemRect.top() - size.height(); - } else { - Q_ASSERT(hasRoomToLeft || hasRoomToRight); - x = hasRoomToRight ? m_itemRect.right() : m_itemRect.left() - size.width(); - - // Put the tooltip at the bottom of the screen. The x-coordinate has already - // been adjusted, so that no overlapping with m_itemRect occurs. - y = desktop.bottom() - size.height(); - } - - KToolTip::showTip(QPoint(x, y), tip); -} - - - -void ToolTipManager::startPreviewJob() -{ - m_generatingPreview = true; - KIO::PreviewJob* job = KIO::filePreview(KFileItemList() << m_item, - PREVIEW_WIDTH, - PREVIEW_HEIGHT); - job->setIgnoreMaximumSize(true); - - connect(job, SIGNAL(gotPreview(const KFileItem&, const QPixmap&)), - this, SLOT(setPreviewPix(const KFileItem&, const QPixmap&))); - connect(job, SIGNAL(failed(const KFileItem&)), - this, SLOT(previewFailed(const KFileItem&))); -} - - -void ToolTipManager::setPreviewPix(const KFileItem& item, - const QPixmap& pixmap) -{ - if (m_item.url() != item.url()) { - m_generatingPreview = false; - return; - } - - if (m_previewIsLate) { - // always use the maximal width - QPixmap paddedImage(QSize(PREVIEW_WIDTH, pixmap.height())); - paddedImage.fill(Qt::transparent); - QPainter painter(&paddedImage); - painter.drawPixmap((PREVIEW_WIDTH - pixmap.width()) / 2, 0, pixmap); - m_pix = paddedImage; - } else { - m_pix = pixmap; - } - m_preview = true; - m_generatingPreview = false; -} - -void ToolTipManager::previewFailed(const KFileItem& item) -{ - Q_UNUSED(item); - m_generatingPreview = false; -} - -#include "tooltipmanager.moc" |