diff options
| author | Shawn Rutledge <shawn.rutledge@qt.io> | 2019-11-28 11:51:07 +0100 |
|---|---|---|
| committer | Shawn Rutledge <shawn.rutledge@qt.io> | 2020-02-03 23:43:49 +0100 |
| commit | a8e4ad7726f1aa52624a0367558650cd4d899c79 (patch) | |
| tree | fdef891d5e8b9e59dcb2965c1a5c08333c381607 /src/pdf | |
| parent | b700f65011eaecefc60f6a4760547ecfb5542e34 (diff) | |
PdfPageView: Add zoom-to-fit and zoom-to-width features
Change-Id: I40b92000a4def105d22a3bd10d0544b0b0f0fe1e
Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>
Diffstat (limited to 'src/pdf')
| -rw-r--r-- | src/pdf/quick/qml/PdfPageView.qml | 57 |
1 files changed, 56 insertions, 1 deletions
diff --git a/src/pdf/quick/qml/PdfPageView.qml b/src/pdf/quick/qml/PdfPageView.qml index 556cf1b7a..e20ebd1b4 100644 --- a/src/pdf/quick/qml/PdfPageView.qml +++ b/src/pdf/quick/qml/PdfPageView.qml @@ -56,6 +56,51 @@ Rectangle { property real __pageScale: image.paintedWidth / document.pagePointSize(image.currentFrame).width + function resetScale() { + image.sourceSize.width = 0 + image.sourceSize.height = 0 + paper.x = 0 + paper.y = 0 + paper.scale = 1 + } + + function scaleToWidth(width, height) { + var halfRotation = Math.abs(paper.rotation % 180) + image.sourceSize = Qt.size((halfRotation > 45 && halfRotation < 135) ? height : width, 0) + paper.x = 0 + paper.y = 0 + image.centerInSize = Qt.size(width, height) + image.centerOnLoad = true + image.vCenterOnLoad = (halfRotation > 45 && halfRotation < 135) + paper.scale = 1 + } + + function scaleToPage(width, height) { + var windowAspect = width / height + var halfRotation = Math.abs(paper.rotation % 180) + var pagePointSize = document.pagePointSize(image.currentFrame) + 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 + paper.scale = 1 + } + PdfSelection { id: selection document: paper.document @@ -79,13 +124,23 @@ Rectangle { source: document.status === PdfDocument.Ready ? document.source : "" asynchronous: true fillMode: Image.PreserveAspectFit + property bool centerOnLoad: false + property bool vCenterOnLoad: false + property size centerInSize + onStatusChanged: + if (status == Image.Ready && centerOnLoad) { + paper.x = (centerInSize.width - image.implicitWidth) / 2 + paper.y = vCenterOnLoad ? (centerInSize.height - image.implicitHeight) / 2 : 0 + centerOnLoad = false + vCenterOnLoad = false + } } function reRenderIfNecessary() { var newSourceWidth = image.sourceSize.width * paper.scale var ratio = newSourceWidth / image.sourceSize.width if (ratio > 1.1 || ratio < 0.9) { image.sourceSize.width = newSourceWidth - image.sourceSize.height = 1 + image.sourceSize.height = 0 paper.scale = 1 } } |