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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the 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:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * 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.
** * Neither the name of The Qt Company Ltd 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
** OWNER 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.14
import QtQuick.Controls 2.14
import QtQuick.Layouts 1.14
import QtQuick.Pdf 5.15
import QtQuick.Shapes 1.14
import QtQuick.Window 2.14
Item {
// public API
// TODO 5.15: required property
property var document: undefined
property real renderScale: 1
property real pageRotation: 0
property string searchString
property string selectedText
property alias currentPage: listView.currentIndex
function copySelectionToClipboard() {
if (listView.currentItem !== null)
listView.currentItem.selection.copyToClipboard()
}
property alias backEnabled: navigationStack.backAvailable
property alias forwardEnabled: navigationStack.forwardAvailable
function back() { navigationStack.back() }
function forward() { navigationStack.forward() }
signal currentPageReallyChanged(page: int)
function resetScale() {
root.renderScale = 1
}
function scaleToWidth(width, height) {
root.renderScale = width / (listView.rot90 ? listView.firstPagePointSize.height : listView.firstPagePointSize.width)
}
function scaleToPage(width, height) {
var windowAspect = width / height
var pageAspect = listView.firstPagePointSize.width / listView.firstPagePointSize.height
if (listView.rot90) {
if (windowAspect > pageAspect) {
root.renderScale = height / listView.firstPagePointSize.width
} else {
root.renderScale = width / listView.firstPagePointSize.height
}
} else {
if (windowAspect > pageAspect) {
root.renderScale = height / listView.firstPagePointSize.height
} else {
root.renderScale = width / listView.firstPagePointSize.width
}
}
}
id: root
ListView {
id: listView
anchors.fill: parent
model: root.document === undefined ? 0 : root.document.pageCount
spacing: 6
highlightRangeMode: ListView.ApplyRange
highlightMoveVelocity: 2000 // TODO increase velocity when setting currentIndex somehow, too
property real rotationModulus: Math.abs(root.pageRotation % 180)
property bool rot90: rotationModulus > 45 && rotationModulus < 135
property size firstPagePointSize: document.pagePointSize(0)
onCurrentIndexChanged: {
navigationStack.push(currentIndex, Qt.point(0, 0), root.renderScale)
root.currentPageReallyChanged(currentIndex)
}
delegate: Rectangle {
id: paper
implicitWidth: image.width
implicitHeight: image.height
rotation: root.pageRotation
property alias selection: selection
property size pagePointSize: document.pagePointSize(index)
property real pageScale: image.paintedWidth / pagePointSize.width
Image {
id: image
source: document.source
currentFrame: index
asynchronous: true
fillMode: Image.PreserveAspectFit
width: pagePointSize.width * root.renderScale
height: pagePointSize.height * root.renderScale
property real renderScale: root.renderScale
property real oldRenderScale: 1
onRenderScaleChanged: {
image.sourceSize.width = pagePointSize.width * renderScale
image.sourceSize.height = 0
paper.scale = 1
paper.x = 0
paper.y = 0
}
}
Shape {
anchors.fill: parent
opacity: 0.25
visible: image.status === Image.Ready
ShapePath {
strokeWidth: 1
strokeColor: "blue"
fillColor: "cyan"
scale: Qt.size(paper.pageScale, paper.pageScale)
PathMultiline {
id: searchResultBoundaries
paths: searchModel.matchGeometry
}
}
ShapePath {
fillColor: "orange"
scale: Qt.size(paper.pageScale, paper.pageScale)
PathMultiline {
id: selectionBoundaries
paths: selection.geometry
}
}
}
PdfSearchModel {
id: searchModel
document: root.document
page: image.currentFrame
searchString: root.searchString
}
PdfSelection {
id: selection
document: root.document
page: image.currentFrame
fromPoint: Qt.point(textSelectionDrag.centroid.pressPosition.x / paper.pageScale, textSelectionDrag.centroid.pressPosition.y / paper.pageScale)
toPoint: Qt.point(textSelectionDrag.centroid.position.x / paper.pageScale, textSelectionDrag.centroid.position.y / paper.pageScale)
hold: !textSelectionDrag.active && !tapHandler.pressed
onTextChanged: root.selectedText = text
}
function reRenderIfNecessary() {
var newSourceWidth = image.sourceSize.width * paper.scale
var ratio = newSourceWidth / image.sourceSize.width
if (ratio > 1.1 || ratio < 0.9) {
image.sourceSize.height = 0
image.sourceSize.width = newSourceWidth
paper.scale = 1
}
}
PinchHandler {
id: pinch
minimumScale: 0.1
maximumScale: 10
minimumRotation: 0
maximumRotation: 0
onActiveChanged:
if (active) {
paper.z = 10
} else {
paper.x = 0
paper.y = 0
paper.z = 0
image.width = undefined
image.height = undefined
paper.reRenderIfNecessary()
}
grabPermissions: PointerHandler.CanTakeOverFromAnything
}
DragHandler {
id: textSelectionDrag
acceptedDevices: PointerDevice.Mouse | PointerDevice.Stylus
target: null
}
TapHandler {
id: tapHandler
acceptedDevices: PointerDevice.Mouse | PointerDevice.Stylus
}
Repeater {
model: PdfLinkModel {
id: linkModel
document: root.document
page: image.currentFrame
}
delegate: Rectangle {
color: "transparent"
border.color: "lightgrey"
x: rect.x * paper.pageScale
y: rect.y * paper.pageScale
width: rect.width * paper.pageScale
height: rect.height * paper.pageScale
MouseArea { // TODO switch to TapHandler / HoverHandler in 5.15
anchors.fill: parent
cursorShape: Qt.PointingHandCursor
onClicked: {
if (page >= 0)
listView.currentIndex = page
else
Qt.openUrlExternally(url)
}
}
}
}
}
}
PdfNavigationStack {
id: navigationStack
onJumped: listView.currentIndex = page
onCurrentPageChanged: root.currentPageReallyChanged(navigationStack.currentPage)
}
}
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