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/*
SPDX-FileCopyrightText: 2011 Aaron Seigo <aseigo@kde.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#include "debug.h"
#include "panelshadows_p.h"
#include <KWindowShadow>
class PanelShadows::Private
{
public:
Private(PanelShadows *shadows)
: q(shadows)
{
}
~Private()
{
}
void clearTiles();
void setupTiles();
void initTile(const QString &element);
void updateShadow(QWindow *window, Plasma::FrameSvg::EnabledBorders);
void clearShadow(QWindow *window);
void updateShadows();
bool hasShadows() const;
PanelShadows *q;
QHash<QWindow *, Plasma::FrameSvg::EnabledBorders> m_windows;
QHash<QWindow *, KWindowShadow *> m_shadows;
QVector<KWindowShadowTile::Ptr> m_tiles;
};
class PanelShadowsSingleton
{
public:
PanelShadowsSingleton()
{
}
PanelShadows self;
};
Q_GLOBAL_STATIC(PanelShadowsSingleton, privatePanelShadowsSelf)
PanelShadows::PanelShadows(QObject *parent, const QString &prefix)
: Plasma::Svg(parent)
, d(new Private(this))
{
setImagePath(prefix);
connect(this, &Plasma::Svg::repaintNeeded, this, [this]() {
d->updateShadows();
});
}
PanelShadows::~PanelShadows()
{
delete d;
}
PanelShadows *PanelShadows::self()
{
return &privatePanelShadowsSelf->self;
}
void PanelShadows::addWindow(QWindow *window, Plasma::FrameSvg::EnabledBorders enabledBorders)
{
if (!window) {
return;
}
d->m_windows[window] = enabledBorders;
d->updateShadow(window, enabledBorders);
connect(window, &QObject::destroyed, this, [this, window]() {
d->m_windows.remove(window);
d->clearShadow(window);
if (d->m_windows.isEmpty()) {
d->clearTiles();
}
});
}
void PanelShadows::removeWindow(QWindow *window)
{
if (!d->m_windows.contains(window)) {
return;
}
d->m_windows.remove(window);
disconnect(window, nullptr, this, nullptr);
d->clearShadow(window);
if (d->m_windows.isEmpty()) {
d->clearTiles();
}
}
void PanelShadows::setEnabledBorders(QWindow *window, Plasma::FrameSvg::EnabledBorders enabledBorders)
{
if (!window || !d->m_windows.contains(window)) {
return;
}
d->m_windows[window] = enabledBorders;
d->updateShadow(window, enabledBorders);
}
void PanelShadows::Private::updateShadows()
{
const bool hadShadowsBefore = !m_tiles.isEmpty();
// has shadows now?
if (hasShadows()) {
if (hadShadowsBefore) {
clearTiles();
}
for (auto i = m_windows.constBegin(); i != m_windows.constEnd(); ++i) {
updateShadow(i.key(), i.value());
}
} else {
if (hadShadowsBefore) {
for (auto i = m_windows.constBegin(); i != m_windows.constEnd(); ++i) {
clearShadow(i.key());
}
clearTiles();
}
}
}
void PanelShadows::Private::initTile(const QString &element)
{
const QImage image = q->pixmap(element).toImage();
KWindowShadowTile::Ptr tile = KWindowShadowTile::Ptr::create();
tile->setImage(image);
m_tiles << tile;
}
void PanelShadows::Private::setupTiles()
{
clearTiles();
initTile(QStringLiteral("shadow-top"));
initTile(QStringLiteral("shadow-topright"));
initTile(QStringLiteral("shadow-right"));
initTile(QStringLiteral("shadow-bottomright"));
initTile(QStringLiteral("shadow-bottom"));
initTile(QStringLiteral("shadow-bottomleft"));
initTile(QStringLiteral("shadow-left"));
initTile(QStringLiteral("shadow-topleft"));
}
void PanelShadows::Private::clearTiles()
{
m_tiles.clear();
}
void PanelShadows::Private::updateShadow(QWindow *window, Plasma::FrameSvg::EnabledBorders enabledBorders)
{
if (!hasShadows()) {
return;
}
if (m_tiles.isEmpty()) {
setupTiles();
}
KWindowShadow *&shadow = m_shadows[window];
if (!shadow) {
shadow = new KWindowShadow(q);
}
if (shadow->isCreated()) {
shadow->destroy();
}
if (enabledBorders & Plasma::FrameSvg::TopBorder) {
shadow->setTopTile(m_tiles.at(0));
} else {
shadow->setTopTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::TopBorder && enabledBorders & Plasma::FrameSvg::RightBorder) {
shadow->setTopRightTile(m_tiles.at(1));
} else {
shadow->setTopRightTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::RightBorder) {
shadow->setRightTile(m_tiles.at(2));
} else {
shadow->setRightTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::BottomBorder && enabledBorders & Plasma::FrameSvg::RightBorder) {
shadow->setBottomRightTile(m_tiles.at(3));
} else {
shadow->setBottomRightTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::BottomBorder) {
shadow->setBottomTile(m_tiles.at(4));
} else {
shadow->setBottomTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::BottomBorder && enabledBorders & Plasma::FrameSvg::LeftBorder) {
shadow->setBottomLeftTile(m_tiles.at(5));
} else {
shadow->setBottomLeftTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::LeftBorder) {
shadow->setLeftTile(m_tiles.at(6));
} else {
shadow->setLeftTile(nullptr);
}
if (enabledBorders & Plasma::FrameSvg::TopBorder && enabledBorders & Plasma::FrameSvg::LeftBorder) {
shadow->setTopLeftTile(m_tiles.at(7));
} else {
shadow->setTopLeftTile(nullptr);
}
QMargins padding;
if (enabledBorders & Plasma::FrameSvg::TopBorder) {
const QSize marginHint = q->elementSize(QStringLiteral("shadow-hint-top-margin"));
if (marginHint.isValid()) {
padding.setTop(marginHint.height());
} else {
padding.setTop(m_tiles[0]->image().height());
}
}
if (enabledBorders & Plasma::FrameSvg::RightBorder) {
const QSize marginHint = q->elementSize(QStringLiteral("shadow-hint-right-margin"));
if (marginHint.isValid()) {
padding.setRight(marginHint.width());
} else {
padding.setRight(m_tiles[2]->image().width());
}
}
if (enabledBorders & Plasma::FrameSvg::BottomBorder) {
const QSize marginHint = q->elementSize(QStringLiteral("shadow-hint-bottom-margin"));
if (marginHint.isValid()) {
padding.setBottom(marginHint.height());
} else {
padding.setBottom(m_tiles[4]->image().height());
}
}
if (enabledBorders & Plasma::FrameSvg::LeftBorder) {
const QSize marginHint = q->elementSize(QStringLiteral("shadow-hint-left-margin"));
if (marginHint.isValid()) {
padding.setLeft(marginHint.width());
} else {
padding.setLeft(m_tiles[6]->image().width());
}
}
shadow->setPadding(padding);
shadow->setWindow(window);
if (!shadow->create()) {
qCWarning(PLASMASHELL) << "Couldn't create KWindowShadow for" << window;
}
}
void PanelShadows::Private::clearShadow(QWindow *window)
{
delete m_shadows.take(window);
}
bool PanelShadows::Private::hasShadows() const
{
return q->hasElement(QStringLiteral("shadow-left"));
}
#include "moc_panelshadows_p.cpp"
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