aerothemeplasma/KWin/thumbnail_seven/contents/ui/main.qml
2023-08-25 00:32:11 +02:00

245 lines
10 KiB
QML

/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2020 Chris Holland <zrenfire@gmail.com>
SPDX-License-Identifier: GPL-2.0-or-later
*/
import QtQuick 2.0
import QtQuick.Layouts 1.1
import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.components 3.0 as PlasmaComponents3
import org.kde.kwin 2.0 as KWin
import QtGraphicalEffects 1.15
// https://techbase.kde.org/Development/Tutorials/KWin/WindowSwitcher
// https://github.com/KDE/kwin/blob/master/tabbox/switcheritem.h
KWin.Switcher {
id: tabBox
currentIndex: thumbnailGridView.currentIndex
PlasmaCore.Dialog {
id: dialog
location: PlasmaCore.Types.Floating
visible: tabBox.visible
opacity: tabBox.visible
flags: Qt.X11BypassWindowManagerHint | Qt.WindowStaysOnTopHint | Qt.Popup
x: tabBox.screenGeometry.x + tabBox.screenGeometry.width * 0.5 - dialogMainItem.width * 0.5
y: tabBox.screenGeometry.y + tabBox.screenGeometry.height * 0.5 - dialogMainItem.height * 0.5
mainItem: Item {
id: dialogMainItem
focus: true
property int maxWidth: tabBox.screenGeometry.width * 0.9
property int maxHeight: tabBox.screenGeometry.height * 0.7
property real screenFactor: tabBox.screenGeometry.width / tabBox.screenGeometry.height
property int maxGridColumnsByWidth: Math.floor(maxWidth / thumbnailGridView.cellWidth)
property int gridColumns: { // Simple greedy algorithm
// respect screenGeometry
const c = Math.min(thumbnailGridView.count, maxGridColumnsByWidth);
const residue = thumbnailGridView.count % c;
if (residue == 0) {
return c;
}
// start greedy recursion
return columnCountRecursion(c, c, c - residue);
}
property int gridRows: Math.ceil(thumbnailGridView.count / gridColumns)
property int optimalWidth: thumbnailGridView.cellWidth * gridColumns
property int optimalHeight: thumbnailGridView.cellHeight * gridRows
width: Math.min(Math.max(thumbnailGridView.cellWidth, optimalWidth), maxWidth)
height: Math.min(Math.max(thumbnailGridView.cellHeight, optimalHeight) + windowTitle.height + PlasmaCore.Units.smallSpacing*4, maxHeight)
clip: true
// Step for greedy algorithm
function columnCountRecursion(prevC, prevBestC, prevDiff) {
const c = prevC - 1;
// don't increase vertical extent more than horizontal
// and don't exceed maxHeight
if (prevC * prevC <= thumbnailGridView.count + prevDiff ||
maxHeight < Math.ceil(thumbnailGridView.count / c) * thumbnailGridView.cellHeight) {
return prevBestC;
}
const residue = thumbnailGridView.count % c;
// halts algorithm at some point
if (residue == 0) {
return c;
}
// empty slots
const diff = c - residue;
// compare it to previous count of empty slots
if (diff < prevDiff) {
return columnCountRecursion(c, c, diff);
} else if (diff == prevDiff) {
// when it's the same try again, we'll stop early enough thanks to the landscape mode condition
return columnCountRecursion(c, prevBestC, diff);
}
// when we've found a local minimum choose this one (greedy)
return columnCountRecursion(c, prevBestC, diff);
}
// Just to get the margin sizes
PlasmaCore.FrameSvgItem {
id: hoverItem
imagePath: "widgets/viewitem"
prefix: "hover"
visible: false
}
Text {
id: windowTitle
anchors {
top: parent.top
topMargin: PlasmaCore.Units.smallSpacing*2
left: parent.left
right: parent.right
}
font.pixelSize: 16
color: "black"
horizontalAlignment: Text.AlignHCenter
text: thumbnailGridView.currentItem ? thumbnailGridView.currentItem.caption : ""
elide: Text.ElideRight
renderType: Text.NativeRendering
}
Glow {
anchors.fill: windowTitle
radius: 15
samples: 31
color: "#77ffffff"
spread: 0.60
source: windowTitle
cached: true
}
GridView {
id: thumbnailGridView
anchors {
top: windowTitle.bottom
topMargin: PlasmaCore.Units.smallSpacing*2
left: parent.left
right: parent.right
bottom: parent.bottom
}
model: tabBox.model
property int iconSize: PlasmaCore.Units.iconSizes.medium
property int captionRowHeight: 30 * PlasmaCore.Units.devicePixelRatio // The close button is 30x30 in Breeze
property int thumbnailWidth: 125 * PlasmaCore.Units.devicePixelRatio
property int thumbnailHeight: thumbnailWidth * (1.0/dialogMainItem.screenFactor)
cellWidth: hoverItem.margins.left + thumbnailWidth + hoverItem.margins.right
cellHeight: hoverItem.margins.top + thumbnailHeight + hoverItem.margins.bottom
keyNavigationWraps: true
highlightMoveDuration: 0
delegate: Item {
id: thumbnailGridItem
width: thumbnailGridView.cellWidth
height: thumbnailGridView.cellHeight
property variant caption: model.caption
MouseArea {
id: ma
anchors.fill: parent
hoverEnabled: true
acceptedButtons: Qt.LeftButton | Qt.RightButton | Qt.MiddleButton
onClicked: {
if(mouse.button === Qt.RightButton) {
thumbnailGridItem.select();
} else if(mouse.button === Qt.MiddleButton) {
tabBox.model.close(index);
} else if(mouse.button === Qt.LeftButton) {
thumbnailGridView.model.activate(index);
return;
}
}
}
function select() {
thumbnailGridView.currentIndex = index;
thumbnailGridView.currentIndexChanged(thumbnailGridView.currentIndex);
}
PlasmaCore.FrameSvgItem {
id: highlightItem
imagePath: "widgets/viewitem"
anchors.fill: parent
prefix: {
if((ma.containsMouse && thumbnailGridView.currentIndex === index) || ma.containsPress) return "selected+hover";
else if(thumbnailGridView.currentIndex === index) return "selected";
else if(ma.containsMouse) return "hover";
}
}
ColumnLayout {
z: 0
spacing: 0
anchors.fill: parent
anchors.leftMargin: hoverItem.margins.left
anchors.topMargin: hoverItem.margins.top
anchors.rightMargin: hoverItem.margins.right
anchors.bottomMargin: hoverItem.margins.bottom
// KWin.ThumbnailItem needs a container
// otherwise it will be drawn the same size as the parent ColumnLayout
Item {
Layout.fillWidth: true
Layout.fillHeight: true
// Cannot draw anything (like an icon) on top of thumbnail
KWin.ThumbnailItem {
id: thumbnailItem
anchors.fill: parent
wId: windowId
}
PlasmaCore.IconItem {
id: iconItem
width: thumbnailGridView.iconSize
height: width
anchors.bottom: parent.bottom
anchors.right: parent.right
source: model.icon
usesPlasmaTheme: false
visible: tabBox.compositing
}
}
}
} // GridView.delegate
Connections {
target: tabBox
function onCurrentIndexChanged() {
thumbnailGridView.currentIndex = tabBox.currentIndex;
}
}
} // GridView
Keys.onPressed: {
if (event.key == Qt.Key_Left) {
thumbnailGridView.moveCurrentIndexLeft();
} else if (event.key == Qt.Key_Right) {
thumbnailGridView.moveCurrentIndexRight();
} else if (event.key == Qt.Key_Up) {
thumbnailGridView.moveCurrentIndexUp();
} else if (event.key == Qt.Key_Down) {
thumbnailGridView.moveCurrentIndexDown();
} else {
return;
}
thumbnailGridView.currentIndexChanged(thumbnailGridView.currentIndex);
}
} // Dialog.mainItem
} // Dialog
}