aerothemeplasma-kde6/KWin/decoration/breeze-v5.93.0/kstyle/breezeshadowhelper.h
2024-06-13 16:59:18 +02:00

169 lines
3.5 KiB
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Executable file

/*
* SPDX-FileCopyrightText: 2014 Hugo Pereira Da Costa <hugo.pereira@free.fr>
* SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#pragma once
#include "breezetileset.h"
#include <KWindowShadow>
#include <QMap>
#include <QMargins>
#include <QObject>
#include <QPointer>
#include <QSet>
namespace Breeze
{
//* forward declaration
class Helper;
struct ShadowParams {
ShadowParams() = default;
ShadowParams(const QPoint &offset, int radius, qreal opacity)
: offset(offset)
, radius(radius)
, opacity(opacity)
{
}
QPoint offset;
int radius = 0;
qreal opacity = 0;
void operator*=(qreal factor)
{
offset *= factor;
radius = qRound(radius * factor);
}
};
struct CompositeShadowParams {
CompositeShadowParams() = default;
CompositeShadowParams(const QPoint &offset, const ShadowParams &shadow1, const ShadowParams &shadow2)
: offset(offset)
, shadow1(shadow1)
, shadow2(shadow2)
{
}
bool isNone() const
{
return qMax(shadow1.radius, shadow2.radius) == 0;
}
QPoint offset;
ShadowParams shadow1;
ShadowParams shadow2;
void operator*=(qreal factor)
{
offset *= factor;
shadow1 *= factor;
shadow2 *= factor;
}
};
//* handle shadow pixmaps passed to window manager via X property
class ShadowHelper : public QObject
{
Q_OBJECT
public:
//* constructor
ShadowHelper(QObject *, Helper &);
//* destructor
~ShadowHelper() override;
//* shadow params from size enum
static CompositeShadowParams lookupShadowParams(int shadowSizeEnum);
//* reset
void reset();
//* load config
void loadConfig();
//* register widget
bool registerWidget(QWidget *, bool force = false);
//* unregister widget
void unregisterWidget(QWidget *);
//* event filter
bool eventFilter(QObject *, QEvent *) override;
//* shadow tiles
/** is public because it is also needed for mdi windows */
TileSet shadowTiles(QWidget *);
//* return device pixel ratio for the window containing the widget
static qreal devicePixelRatio(QWidget *);
protected Q_SLOTS:
//* unregister widget
void widgetDeleted(QObject *);
//* unregister window
void windowDeleted(QObject *);
protected:
//* true if widget is a menu
bool isMenu(QWidget *) const;
//* true if widget is a tooltip
bool isToolTip(QWidget *) const;
//* dock widget
bool isDockWidget(QWidget *) const;
//* toolbar
bool isToolBar(QWidget *) const;
//* accept widget
bool acceptWidget(QWidget *) const;
// create shared shadow tiles from tileset
const QVector<KWindowShadowTile::Ptr> &createShadowTiles();
// create shadow tile from pixmap
KWindowShadowTile::Ptr createTile(const QPixmap &);
//* installs shadow on given widget in a platform independent way
void installShadows(QWidget *);
//* uninstalls shadow on given widget in a platform independent way
void uninstallShadows(QWidget *);
//* gets the shadow margins for the given widget
QMargins shadowMargins(QWidget *) const;
private:
//* helper
Helper &_helper;
//* registered widgets
QSet<QWidget *> _widgets;
//* managed shadows
QMap<QWindow *, KWindowShadow *> _shadows;
//* tileset
TileSet _shadowTiles;
//* number of tiles
enum { numTiles = 8 };
//* shared shadow tiles
QVector<KWindowShadowTile::Ptr> _tiles;
};
}