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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "previewtooltipbackend.h"
#include "previewimagetooltip.h"
#include <coreplugin/icore.h>
#include <asynchronousimagecache.h>
#include <QApplication>
#include <QMetaObject>
#include <QScreen>
namespace QmlDesigner {
PreviewTooltipBackend::PreviewTooltipBackend(AsynchronousImageCache &cache)
: m_cache{cache}
{}
PreviewTooltipBackend::~PreviewTooltipBackend()
{
hideTooltip();
}
void PreviewTooltipBackend::showTooltip()
{
m_tooltip = std::make_unique<PreviewImageTooltip>();
m_tooltip->setName(m_name);
m_tooltip->setPath(m_path);
m_tooltip->setInfo(m_info);
m_cache.requestImage(
m_path,
[tooltip = QPointer<PreviewImageTooltip>(m_tooltip.get()), scaleImage = m_scaleImage](const QImage &image) {
QMetaObject::invokeMethod(tooltip, [tooltip, image, scaleImage] {
if (tooltip) {
tooltip->setImage(image, scaleImage);
tooltip->show();
}
});
},
[](auto) {},
m_extraId,
m_auxiliaryData);
reposition();
}
void PreviewTooltipBackend::hideTooltip()
{
if (m_tooltip)
m_tooltip->hide();
m_tooltip.reset();
}
bool PreviewTooltipBackend::isVisible() const
{
if (m_tooltip)
return m_tooltip->isVisible();
return false;
}
void PreviewTooltipBackend::reposition()
{
if (m_tooltip) {
// By default tooltip is placed right and below the cursor, but if the screen
// doesn't have sufficient space in that direction, position is adjusted.
// It is assumed that some diagonal direction will have enough space.
const QPoint mousePos = QCursor::pos();
QScreen *screen = qApp->screenAt(mousePos);
QRect tipRect = m_tooltip->geometry();
QPoint offset(10, 5);
QPoint pos = mousePos + offset;
if (screen) {
QRect rect = screen->geometry();
tipRect.moveTo(pos);
if (!rect.contains(tipRect)) {
pos = mousePos + QPoint(-offset.x() - m_tooltip->size().width(),
offset.y());
tipRect.moveTo(pos);
if (!rect.contains(tipRect)) {
pos = mousePos + QPoint(offset.x(), -offset.y() - m_tooltip->size().height());
tipRect.moveTo(pos);
if (!rect.contains(tipRect)) {
pos = mousePos + QPoint(-offset.x() - m_tooltip->size().width(),
-offset.y() - m_tooltip->size().height());
tipRect.moveTo(pos);
}
}
}
}
m_tooltip->move(pos);
}
}
QString PreviewTooltipBackend::name() const
{
return m_name;
}
void PreviewTooltipBackend::setName(const QString &name)
{
if (m_name != name) {
m_name = name;
emit nameChanged();
}
}
QString PreviewTooltipBackend::path() const
{
return m_path;
}
void PreviewTooltipBackend::setPath(const QString &path)
{
if (m_path != path) {
m_path = path;
emit pathChanged();
}
}
QString PreviewTooltipBackend::info() const
{
return m_info;
}
void PreviewTooltipBackend::setInfo(const QString &info)
{
if (m_info != info) {
m_info = info;
emit infoChanged();
}
}
QString PreviewTooltipBackend::extraId() const
{
return m_extraId;
}
// Sets the imageCache extraId hint. Valid content depends on image cache collector used.
void PreviewTooltipBackend::setExtraId(const QString &extraId)
{
if (m_extraId != extraId) {
m_extraId = extraId;
emit extraIdChanged();
}
}
bool PreviewTooltipBackend::scaleImage() const
{
return m_scaleImage;
}
void PreviewTooltipBackend::setScaleImage(bool scale)
{
if (m_scaleImage != scale) {
m_scaleImage = scale;
emit scaleImageChanged();
}
}
} // namespace QmlDesigner
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