-
-
Notifications
You must be signed in to change notification settings - Fork 41
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Browse files
Browse the repository at this point in the history
- Loading branch information
1 parent
fc24a02
commit 6c0ae04
Showing
22 changed files
with
293 additions
and
163 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,130 @@ | ||
| /* | ||
| * Copyright (C) 2021 Damir Porobic <[email protected]> | ||
| * | ||
| * This program is free software; you can redistribute it and/or modify | ||
| * it under the terms of the GNU Lesser General Public License as published by | ||
| * the Free Software Foundation; either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public License | ||
| * along with this program; if not, write to the Free Software | ||
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, | ||
| * Boston, MA 02110-1301, USA. | ||
| */ | ||
|
|
||
| #include "ScrollAndZoomView.h" | ||
|
|
||
| namespace kImageAnnotator { | ||
|
|
||
| ScrollAndZoomView::ScrollAndZoomView(QWidget *parent) : | ||
| QGraphicsView(parent), | ||
| mIsDragging(false), | ||
| mViewZoomer(new ViewZoomer(this)) | ||
| { | ||
| setTransformationAnchor(QGraphicsView::NoAnchor); | ||
| disableDragging(); | ||
| setViewportUpdateMode(ViewportUpdateMode::FullViewportUpdate); | ||
| } | ||
|
|
||
| ScrollAndZoomView::~ScrollAndZoomView() | ||
| { | ||
| delete mViewZoomer; | ||
| } | ||
|
|
||
| ZoomValueProvider *ScrollAndZoomView::zoomValueProvider() const | ||
| { | ||
| return mViewZoomer; | ||
| } | ||
|
|
||
| void ScrollAndZoomView::keyPressEvent(QKeyEvent *event) | ||
| { | ||
| mKeyHelper.keyPress(event); | ||
| if(mKeyHelper.isSpacePressed()) { | ||
| enableDragging(mapFromGlobal(QCursor::pos())); | ||
| } | ||
| QGraphicsView::keyPressEvent(event); | ||
| } | ||
|
|
||
| void ScrollAndZoomView::keyReleaseEvent(QKeyEvent *event) | ||
| { | ||
| mKeyHelper.keyRelease(event); | ||
| if(!mKeyHelper.isSpacePressed()) { | ||
| disableDragging(); | ||
| } | ||
| QGraphicsView::keyReleaseEvent(event); | ||
| } | ||
|
|
||
| void ScrollAndZoomView::mouseMoveEvent(QMouseEvent *event) | ||
| { | ||
| if (mIsDragging) { | ||
| scrollTo(event->pos()); | ||
| } else { | ||
| QGraphicsView::mouseMoveEvent(event); | ||
| } | ||
| } | ||
|
|
||
| void ScrollAndZoomView::mousePressEvent(QMouseEvent *event) | ||
| { | ||
| if (event->button() == Qt::MidButton) { | ||
| enableDragging(event->pos()); | ||
| } else { | ||
| QGraphicsView::mousePressEvent(event); | ||
| } | ||
| } | ||
|
|
||
| void ScrollAndZoomView::mouseReleaseEvent(QMouseEvent *event) | ||
| { | ||
| if (event->button() == Qt::MidButton) { | ||
| disableDragging(); | ||
| } else { | ||
| QGraphicsView::mouseReleaseEvent(event); | ||
| } | ||
| } | ||
|
|
||
| void ScrollAndZoomView::wheelEvent(QWheelEvent *event) | ||
| { | ||
| if (event->modifiers() & Qt::ControlModifier ) { | ||
| mViewZoomer->wheelZoom(event); | ||
| } else { | ||
| QGraphicsView::wheelEvent(event); | ||
| } | ||
| } | ||
|
|
||
| void ScrollAndZoomView::scrollTo(const QPoint &pos) | ||
| { | ||
| auto delta = pos - mLastPosition; | ||
| scrollByDelta(horizontalScrollBar(), delta.x()); | ||
| scrollByDelta(verticalScrollBar(), delta.y()); | ||
| mLastPosition = pos; | ||
| } | ||
|
|
||
| void ScrollAndZoomView::scrollByDelta(QScrollBar *scrollBar, int delta) const | ||
| { | ||
| scrollBar->setValue(scrollBar->value() - delta); | ||
| } | ||
|
|
||
| void ScrollAndZoomView::enableDragging(const QPoint &pos) | ||
| { | ||
| mIsDragging = true; | ||
| mLastPosition = pos; | ||
| setDragCursorEnabled(true); | ||
| } | ||
|
|
||
| void ScrollAndZoomView::disableDragging() | ||
| { | ||
| mIsDragging = false; | ||
| mLastPosition = {}; | ||
| setDragCursorEnabled(false); | ||
| } | ||
|
|
||
| void ScrollAndZoomView::setDragCursorEnabled(bool enabled) const | ||
| { | ||
| enabled ? QGuiApplication::setOverrideCursor(Qt::SizeAllCursor) : QGuiApplication::restoreOverrideCursor(); | ||
| } | ||
|
|
||
| } // namespace kImageAnnotator |
Oops, something went wrong.