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Diffstat (limited to 'src/pdf/quick/qml/PdfPageView.qml')
| -rw-r--r-- | src/pdf/quick/qml/PdfPageView.qml | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/src/pdf/quick/qml/PdfPageView.qml b/src/pdf/quick/qml/PdfPageView.qml new file mode 100644 index 000000000..dfd00a1a8 --- /dev/null +++ b/src/pdf/quick/qml/PdfPageView.qml @@ -0,0 +1,273 @@ +/**************************************************************************** +** +** Copyright (C) 2020 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtPDF module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +import QtQuick 2.14 +import QtQuick.Controls 2.14 +import QtQuick.Pdf 5.15 +import QtQuick.Shapes 1.14 +import Qt.labs.animation 1.0 + +Rectangle { + // public API + // TODO 5.15: required property + property var document: undefined + property alias status: image.status + + property alias selectedText: selection.text + function copySelectionToClipboard() { + selection.copyToClipboard() + } + + // page navigation + property alias currentPage: navigationStack.currentPage + property alias backEnabled: navigationStack.backAvailable + property alias forwardEnabled: navigationStack.forwardAvailable + function back() { navigationStack.back() } + function forward() { navigationStack.forward() } + function goToPage(page) { goToLocation(page, Qt.point(0, 0), 0) } + function goToLocation(page, location, zoom) { + if (zoom > 0) + root.renderScale = zoom + navigationStack.push(page, location, zoom) + } + + // page scaling + property real renderScale: 1 + property alias sourceSize: image.sourceSize + function resetScale() { + image.sourceSize.width = 0 + image.sourceSize.height = 0 + root.x = 0 + root.y = 0 + root.scale = 1 + } + function scaleToWidth(width, height) { + var halfRotation = Math.abs(root.rotation % 180) + image.sourceSize = Qt.size((halfRotation > 45 && halfRotation < 135) ? height : width, 0) + root.x = 0 + root.y = 0 + image.centerInSize = Qt.size(width, height) + image.centerOnLoad = true + image.vCenterOnLoad = (halfRotation > 45 && halfRotation < 135) + root.scale = 1 + } + function scaleToPage(width, height) { + var windowAspect = width / height + var halfRotation = Math.abs(root.rotation % 180) + var pagePointSize = document.pagePointSize(navigationStack.currentPage) + if (halfRotation > 45 && halfRotation < 135) { + // rotated 90 or 270ยบ + var pageAspect = pagePointSize.height / pagePointSize.width + if (windowAspect > pageAspect) { + image.sourceSize = Qt.size(height, 0) + } else { + image.sourceSize = Qt.size(0, width) + } + } else { + var pageAspect = pagePointSize.width / pagePointSize.height + if (windowAspect > pageAspect) { + image.sourceSize = Qt.size(0, height) + } else { + image.sourceSize = Qt.size(width, 0) + } + } + image.centerInSize = Qt.size(width, height) + image.centerOnLoad = true + image.vCenterOnLoad = true + root.scale = 1 + } + + // text search + property alias searchModel: searchModel + property alias searchString: searchModel.searchString + function searchBack() { --searchModel.currentResult } + function searchForward() { ++searchModel.currentResult } + + // implementation + id: root + width: image.width + height: image.height + + PdfSelection { + id: selection + document: root.document + page: navigationStack.currentPage + fromPoint: Qt.point(textSelectionDrag.centroid.pressPosition.x / image.pageScale, textSelectionDrag.centroid.pressPosition.y / image.pageScale) + toPoint: Qt.point(textSelectionDrag.centroid.position.x / image.pageScale, textSelectionDrag.centroid.position.y / image.pageScale) + hold: !textSelectionDrag.active && !tapHandler.pressed + } + + PdfSearchModel { + id: searchModel + document: root.document === undefined ? null : root.document + onCurrentPageChanged: root.goToPage(currentPage) + } + + PdfNavigationStack { + id: navigationStack + onCurrentPageChanged: searchModel.currentPage = currentPage + // TODO onCurrentLocationChanged: position currentLocation.x and .y in middle // currentPageChanged() MUST occur first! + onCurrentZoomChanged: root.renderScale = currentZoom + // TODO deal with horizontal location (need WheelHandler or Flickable probably) + } + + Image { + id: image + currentFrame: navigationStack.currentPage + source: document.status === PdfDocument.Ready ? document.source : "" + asynchronous: true + fillMode: Image.PreserveAspectFit + property bool centerOnLoad: false + property bool vCenterOnLoad: false + property size centerInSize + property real pageScale: image.paintedWidth / document.pagePointSize(navigationStack.currentPage).width + function reRenderIfNecessary() { + var newSourceWidth = image.sourceSize.width * root.scale + var ratio = newSourceWidth / image.sourceSize.width + if (ratio > 1.1 || ratio < 0.9) { + image.sourceSize.width = newSourceWidth + image.sourceSize.height = 0 + root.scale = 1 + } + } + onStatusChanged: + if (status == Image.Ready && centerOnLoad) { + root.x = (centerInSize.width - image.implicitWidth) / 2 + root.y = vCenterOnLoad ? (centerInSize.height - image.implicitHeight) / 2 : 0 + centerOnLoad = false + vCenterOnLoad = false + } + } + onRenderScaleChanged: { + image.sourceSize.width = document.pagePointSize(navigationStack.currentPage).width * renderScale + image.sourceSize.height = 0 + root.scale = 1 + } + + Shape { + anchors.fill: parent + opacity: 0.25 + visible: image.status === Image.Ready + ShapePath { + strokeWidth: 1 + strokeColor: "cyan" + fillColor: "steelblue" + scale: Qt.size(image.pageScale, image.pageScale) + PathMultiline { + paths: searchModel.currentPageBoundingPolygons + } + } + ShapePath { + strokeWidth: 1 + strokeColor: "orange" + fillColor: "cyan" + scale: Qt.size(image.pageScale, image.pageScale) + PathMultiline { + paths: searchModel.currentResultBoundingPolygons + } + } + ShapePath { + fillColor: "orange" + scale: Qt.size(image.pageScale, image.pageScale) + PathMultiline { + paths: selection.geometry + } + } + } + + Repeater { + model: PdfLinkModel { + id: linkModel + document: root.document + page: navigationStack.currentPage + } + delegate: Rectangle { + color: "transparent" + border.color: "lightgrey" + x: rect.x * image.pageScale + y: rect.y * image.pageScale + width: rect.width * image.pageScale + height: rect.height * image.pageScale + MouseArea { // TODO switch to TapHandler / HoverHandler in 5.15 + anchors.fill: parent + cursorShape: Qt.PointingHandCursor + onClicked: { + if (page >= 0) + navigationStack.push(page, Qt.point(0, 0), root.renderScale) + else + Qt.openUrlExternally(url) + } + } + } + } + + PinchHandler { + id: pinch + minimumScale: 0.1 + maximumScale: 10 + minimumRotation: 0 + maximumRotation: 0 + onActiveChanged: if (!active) image.reRenderIfNecessary() + grabPermissions: PinchHandler.TakeOverForbidden // don't allow takeover if pinch has started + } + DragHandler { + id: pageMovingTouchDrag + acceptedDevices: PointerDevice.TouchScreen + } + DragHandler { + id: pageMovingMiddleMouseDrag + acceptedDevices: PointerDevice.Mouse | PointerDevice.Stylus + acceptedButtons: Qt.MiddleButton + snapMode: DragHandler.NoSnap + } + DragHandler { + id: textSelectionDrag + acceptedDevices: PointerDevice.Mouse | PointerDevice.Stylus + target: null + } + TapHandler { + id: tapHandler + acceptedDevices: PointerDevice.Mouse | PointerDevice.Stylus + } + // prevent it from being scrolled out of view + BoundaryRule on x { + minimum: 100 - root.width + maximum: root.parent.width - 100 + } + BoundaryRule on y { + minimum: 100 - root.height + maximum: root.parent.height - 100 + } +} |