harbour-books/app/qml/BooksPager.qml

173 lines
5.6 KiB
QML

/*
Copyright (C) 2015-2022 Jolla Ltd.
Copyright (C) 2015-2022 Slava Monich <slava.monich@jolla.com>
You may use this file under the terms of BSD license as follows:
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
3. Neither the names of the copyright holders nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
*/
import QtQuick 2.0
import Sailfish.Silica 1.0
import harbour.books 1.0
import "Books.js" as Books
Item {
id: root
height: slider.height
property var stack
property int pageCount
readonly property bool haveHistory: stack && stack.count > 1
readonly property bool canGoBack: haveHistory && stack.currentIndex > 0
readonly property bool canGoForward: haveHistory && (stack.currentIndex < (stack.count - 1))
property real leftMargin: Theme.horizontalPageMargin
property real rightMargin: Theme.horizontalPageMargin
property alias pressed: slider.pressed
property bool _externalChange
signal pageChanged(var page)
signal feedback()
function clearStack() {
if (haveHistory) {
stack.clear()
feedback()
}
}
function setPage(page) {
_externalChange = true
slider.value = page
_externalChange = false
}
states: [
State {
name: "history"
when: haveHistory
PropertyChanges {
target: slider
x: navigateBack.x + navigateBack.width
}
},
State {
name: "default"
when: !haveHistory
PropertyChanges {
target: slider
x: 0
}
}
]
MouseArea {
id: navigateBackArea
property bool down: pressed && containsMouse
width: navigateBack.width + root.leftMargin
height: navigateBack.height
visible: navigateBack.visible
anchors {
left: parent.left
verticalCenter: parent.verticalCenter
}
onClicked: stack.back()
onPressAndHold: clearStack()
}
IconButton {
id: navigateBack
icon.source: "image://theme/icon-m-left?" + Settings.primaryPageToolColor
opacity: canGoBack ? 1 : 0
visible: opacity > 0
down: navigateBackArea.down || (pressed && containsMouse)
anchors {
left: parent.left
leftMargin: root.leftMargin
verticalCenter: parent.verticalCenter
}
onClicked: stack.back()
onPressAndHold: clearStack()
Behavior on opacity { FadeAnimation {} }
}
BooksPageSlider {
id: slider
anchors.bottom: parent.bottom
width: parent.width - 2*x
stepSize: 1
minimumValue: 0
maximumValue: pageCount > 0 ? pageCount - 1 : 0
leftMargin: Theme.horizontalPageMargin
rightMargin: Theme.horizontalPageMargin
opacity: Books.contentOpacity(Settings.brightness)
primaryColor: Settings.primaryPageToolColor
secondaryColor: Settings.primaryPageToolColor
highlightColor: Settings.highlightPageToolColor
secondaryHighlightColor: Settings.highlightPageToolColor
onMaximumValueChanged: _updateHighlightToValue()
onSliderValueChanged: if (!_externalChange) pageChanged(value)
Behavior on x { SmoothedAnimation { duration: 250 } }
}
MouseArea {
id: navigateForwardArea
property bool down: pressed && containsMouse
width: navigateForward.width + root.rightMargin
height: navigateForward.height
visible: navigateForward.visible
anchors {
right: parent.right
verticalCenter: parent.verticalCenter
}
onClicked: stack.forward()
onPressAndHold: clearStack()
}
IconButton {
id: navigateForward
icon.source: "image://theme/icon-m-right?" + Settings.primaryPageToolColor
down: navigateForwardArea.down || (pressed && containsMouse)
opacity: canGoForward ? 1 : 0
visible: opacity > 0
anchors {
right: parent.right
rightMargin: root.rightMargin
verticalCenter: parent.verticalCenter
}
onClicked: stack.forward()
onPressAndHold: clearStack()
Behavior on opacity { FadeAnimation {} }
}
}