#include "tooltipmanager.h"
+#include "dolphintooltip.h"
#include "dolphinmodel.h"
#include "dolphinsortfilterproxymodel.h"
-#include <kformattedballoontipdelegate.h>
#include <kicon.h>
#include <ktooltip.h>
+#include <kio/previewjob.h>
+#include <QApplication>
+#include <QDesktopWidget>
+#include <QScrollBar>
#include <QTimer>
+#include <QToolTip>
-K_GLOBAL_STATIC(KFormattedBalloonTipDelegate, g_delegate)
+const int PREVIEW_WIDTH = 256;
+const int PREVIEW_HEIGHT = 256;
+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) :
m_dolphinModel(0),
m_proxyModel(model),
m_timer(0),
+ m_previewTimer(0),
+ m_waitOnPreviewTimer(0),
m_item(),
- m_pos()
+ m_itemRect(),
+ m_preview(false),
+ m_generatingPreview(false),
+ m_previewIsLate(false),
+ m_previewPass(0),
+ m_emptyRenderedKToolTipItem(0),
+ m_pix()
{
KToolTip::setToolTipDelegate(g_delegate);
m_timer = new QTimer(this);
m_timer->setSingleShot(true);
connect(m_timer, SIGNAL(timeout()),
- this, SLOT(showToolTip()));
+ 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);
}
void ToolTipManager::requestToolTip(const QModelIndex& index)
{
- if (index.column() == DolphinModel::Name) {
+ // 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();
- const QRect rect = m_view->visualRect(index);
- m_pos = m_view->viewport()->mapToGlobal(rect.bottomRight());
+ 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::showToolTip()
+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(KUrl::List() << m_item.url(),
+ 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)
{
- KToolTipItem* tip = new KToolTipItem(KIcon(m_item.iconName()), m_item.getToolTipText());
- KToolTip::showTip(m_pos, tip);
+ Q_UNUSED(item);
+ m_generatingPreview = false;
}
#include "tooltipmanager.moc"
projects / dolphin.git / blobdiff