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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include <QVector2D>
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#include "hswidgetpositioningonwidgetmove.h"
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#include "hsapp_defs.h"
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/*!
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The distance by which the line is extended on each side of reference points
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*/
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#define SNAP_LINE_EXTEND_VALUE 10.0
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/*!
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Sets the snap method instance. The existing instance
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will be deleted.
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*/
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void HsWidgetPositioningOnWidgetMove::setInstance(HsWidgetPositioningOnWidgetMove *instance)
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{
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if (mInstance)
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delete mInstance;
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mInstance = instance;
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}
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/*!
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Returns the snap method instance.
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*/
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HsWidgetPositioningOnWidgetMove *HsWidgetPositioningOnWidgetMove::instance()
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{
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return mInstance;
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}
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/*!
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Points to the snap method instance.
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*/
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HsWidgetPositioningOnWidgetMove *HsWidgetPositioningOnWidgetMove::mInstance = 0;
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/*!
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Constructor.
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*/
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HsSnapToLines::HsSnapToLines() :
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mActiveRectWidth(0.0), mActiveRectHeight(0.0), mMinDistancePosition(0.0),
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mHorizontalSnapPosition(0.0), mVerticalSnapPosition(0.0),
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mHorizontalSnapFound(false), mVerticalSnapFound(false),
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mRectLieAbove(false), mLeftInRange(false), mRightInRange(false), mIsBetterFitHorizontalSnap(false),
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mDistanceVerticalEdges(0.0), mVerticalEdgeToLeftOfInactiveRect(0.0), mVerticalEdgeToRightOfInactiveRect(0.0),
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mMinVerticalEdgesDistance(0.0), mVerticalDistance(0.0),
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mVerticalDistanceFromSelectedRect(0.0), mContainerVerticalEdgeDistance(0.0),
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mRectLieLeft(false), mTopInRange(false), mBottomInRange(false), mIsBetterFitVerticalSnap(false),
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mDistanceHorizontalEdges(0.0), mHorizontalEdgeToTopOfInactiveRect(0.0), mHorizontalEdgeToBottomOfInactiveRect(0.0),
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mMinHorizontalEdgesDistance(0.0), mHorizontalDistance(0.0),
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mHorizontalDistanceFromSelectedRect(0.0), mContainerHorizontalEdgeDistance(0.0),
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mSnapEnabled(false), mSnapForce(0.0), mSnapGap(0.0),
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mRectVerticalEdgeLiesInLineWithVerticalLine(false), mRectLieAboveVerticalLine(false), mRectLieBelowVerticalLine(false),
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mRectHorizontalEdgeLiesInLineWithHorizontalLine(false), mRectLieLeftOfHorizontalLine(false), mRectLiesRightOfHorizontalLine(false)
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{
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}
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/*!
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Configures the snap-to-lines algorithm.
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*/
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void HsSnapToLines::setConfiguration(const QVariantHash &configuration)
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{
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bool canConvert = false;
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mSnapEnabled = configuration[SNAPENABLED].toBool();
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//The following values should be in qreal, so the status received in canConvert is ignored
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mSnapForce = configuration[SNAPFORCE].toDouble(&canConvert);
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mSnapGap = configuration[SNAPGAP].toDouble(&canConvert);
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}
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/*!
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Set the dimensions of container rect, active rect and position of Inactive Rects
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on the page.
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*/
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void HsSnapToLines::setPagePresentation(const QRectF &containerRect,
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const QList<QRectF> &inactiveRects,
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const QRectF &activeRect)
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{
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mContainerRect = containerRect;
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mActiveRectWidth = activeRect.width();
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mActiveRectHeight = activeRect.height();
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createSnappableRectangles(inactiveRects);
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}
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/*!
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Create the list of rects and flag if their sides are snappable from top or bottom or left or right,
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depending on other rects overlapping with the rect.
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*/
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void HsSnapToLines::createSnappableRectangles(const QList<QRectF> &inactiveRects)
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{
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mInactiveSnapRects.clear();
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int i;
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for (i = 0; i<inactiveRects.count(); ++i) {
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QRectF rect = inactiveRects[i];
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HsSnapRectangle snapRectangle(rect);
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int j;
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for (j = 0; j<inactiveRects.count(); ++j) {
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QRectF rectToCompare = inactiveRects[j];
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if (rect != rectToCompare) {
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//Check if the rectangles being compared intersect each other
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if (rectToCompare.intersects(rect)) {
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//As the widgets intersect, check which corner is contained,
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//The corner that is contained is not snappable, when the moving widget is in the same position
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if (rectToCompare.contains(rect.topLeft())) {
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snapRectangle.isLeftSnapableForAbove = false;
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snapRectangle.isTopSnapableForLeft = false;
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}
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if (rectToCompare.contains(rect.topRight())) {
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snapRectangle.isRightSnapableForAbove = false;
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snapRectangle.isTopSnapableForRight = false;
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}
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if (rectToCompare.contains(rect.bottomRight())) {
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snapRectangle.isRightSnapableForBelow = false;
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snapRectangle.isBottomSnapableForRight = false;
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}
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if (rectToCompare.contains(rect.bottomLeft())) {
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snapRectangle.isLeftSnapableForBelow = false;
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snapRectangle.isBottomSnapableForLeft = false;
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}
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}
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}
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}
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if (snapRectangle.isLeftSnapableForAbove || snapRectangle.isLeftSnapableForBelow ||
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snapRectangle.isRightSnapableForAbove || snapRectangle.isRightSnapableForBelow ||
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snapRectangle.isTopSnapableForLeft || snapRectangle.isTopSnapableForRight ||
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snapRectangle.isBottomSnapableForLeft || snapRectangle.isBottomSnapableForRight) {
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mInactiveSnapRects.append(snapRectangle);
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}
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}
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}
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/*!
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Run the snap algorithm to with the position of moving rect, to get a snap result.
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*/
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HsWidgetPositioningOnWidgetMove::Result HsSnapToLines::run(const QRectF &movingRect)
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{
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HsWidgetPositioningOnWidgetMove::Result result;
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if (mSnapEnabled) {
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mMovingRect = movingRect;
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mHorizontalSnapPosition = 0.0;
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mVerticalSnapPosition = 0.0;
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mVerticalLine = QLineF();
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mMinVerticalEdgesDistance = mSnapForce;
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mVerticalDistanceFromSelectedRect = 0.0;
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mContainerVerticalEdgeDistance = 0.0;
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mHorizontalSnapFound = false;
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mHorizontalLine = QLineF();
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mMinHorizontalEdgesDistance = mSnapForce;
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mHorizontalDistanceFromSelectedRect = 0.0;
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mContainerHorizontalEdgeDistance = 0.0;
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mVerticalSnapFound = false;
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for (int i = 0; i < mInactiveSnapRects.count(); ++i) {
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mInactiveSnapRectToCompare = mInactiveSnapRects[i];
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mInactiveRectToCompare = mInactiveSnapRectToCompare.rectangle;
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if (!movingRect.intersects(mInactiveRectToCompare)) { //Only compare if Inactive Rect and moving rect do not overlap.
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// Horizontal - Direction Snapping
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compareLeftSideOfMovingRectForSnapping();
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compareRightSideOfMovingRectForSnapping();
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// Vertical - Direction Snapping
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compareTopOfMovingRectForSnapping();
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compareBottomOfMovingRectForSnapping();
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}
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}
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if (mHorizontalSnapFound) {
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result.hasHorizontalSnap = true;
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result.horizontalSnapPosition = mHorizontalSnapPosition;
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extendVerticalLine();
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result.verticalSnapLine = mVerticalLine;
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}
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if (mVerticalSnapFound) {
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result.hasVerticalSnap = true;
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result.verticalSnapPosition = mVerticalSnapPosition;
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extendHorizontalLine();
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result.horizontalSnapLine = mHorizontalLine;
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}
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}
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return result;
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}
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/*!
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Check if the inactive rect being compared with moving rect lies above or below of moving rect.
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*/
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void HsSnapToLines::checkInactiveRectLieAboveOrBelowOfMovingRect()
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{
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//Check if the inactive rect lies below or above of the moving rect
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mRectLieAbove = false;
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mVerticalDistance = 0.0;
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//Inactive Rect lies above or at the save Y position as the Moving Rect
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if (mInactiveRectToCompare.top() <= mMovingRect.top()) {
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mRectLieAbove = true;
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if (mInactiveRectToCompare.bottom() <= mMovingRect.top()) {
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mVerticalDistance = mMovingRect.top() - mInactiveRectToCompare.bottom();
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}
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else {
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mVerticalDistance = mMovingRect.top() - mInactiveRectToCompare.top();
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}
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}
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//Inactive Rect lies below the Moving Rect
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else {
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mRectLieAbove = false;
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if (mMovingRect.bottom() <= mInactiveRectToCompare.top()) {
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mVerticalDistance = mInactiveRectToCompare.top() - mMovingRect.bottom();
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}
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else {
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mVerticalDistance = mInactiveRectToCompare.bottom() - mMovingRect.bottom();
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}
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}
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}
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/*!
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Check if the Vertical edges (Left and Right Edges) of the inactive rect being compared
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is in range of the snapping distance of the vertical edge of moving rect
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\param movingRectVerticalEdgePosition Position of the Vertical edge(either left or right) of moving rect.
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*/
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void HsSnapToLines::checkInactiveRectVerticalEdgesInRange(qreal movingRectVerticalEdgePosition)
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{
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mLeftInRange = false;
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mRightInRange = false;
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//calculate the distance of the moving rect's vertical edge to the inactive rect's left and right edges
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mVerticalEdgeToLeftOfInactiveRect = qAbs(mInactiveRectToCompare.left() - movingRectVerticalEdgePosition);
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mVerticalEdgeToRightOfInactiveRect = qAbs(mInactiveRectToCompare.right() - movingRectVerticalEdgePosition);
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if (mVerticalEdgeToLeftOfInactiveRect <= mMinVerticalEdgesDistance
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&& (mRectLieAbove && mInactiveSnapRectToCompare.isLeftSnapableForBelow
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|| !mRectLieAbove && mInactiveSnapRectToCompare.isLeftSnapableForAbove)) {
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mLeftInRange = true;
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}
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if (mVerticalEdgeToRightOfInactiveRect <= mMinVerticalEdgesDistance
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&& (mRectLieAbove && mInactiveSnapRectToCompare.isRightSnapableForBelow
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|| !mRectLieAbove && mInactiveSnapRectToCompare.isRightSnapableForAbove)) {
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mRightInRange = true;
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}
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}
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/*!
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Check if this inactive rect is better fit for Horizontal snapping
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\param containerVerticalEdgeToInactiveRectVerticalEdge
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difference between the vertical edge of the container and same vertical edge of inactive rect
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\param containerOtherVerticalEdgeToInactiveRectOtherVerticalEdge
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difference between the opposite vertical edges of continer and the inactive rect
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*/
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void HsSnapToLines::checkInactiveRectBetterFitForHorizontalSnapping(qreal containerVerticalEdgeToInactiveRectVerticalEdge,
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qreal containerOtherVerticalEdgeToInactiveRectOtherVerticalEdge)
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{
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//Check if the inactive rect is better fit or if it is inline with already selected position and hence is also a better fit
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mIsBetterFitHorizontalSnap = false;
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if (mLeftInRange || mRightInRange) {
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if (mDistanceVerticalEdges < mMinVerticalEdgesDistance) {
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mIsBetterFitHorizontalSnap = true;
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}
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else if (mDistanceVerticalEdges == mMinVerticalEdgesDistance) { //the distance in the vertical edges is same as from the previously selected rect
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//check the position of rect with respect to Vertical line
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checkInactiveRectPositionToVerticalLine();
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//if horizontal snap position was previously found and the rect's edge is in line with Vertical line
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if (mHorizontalSnapFound && mRectVerticalEdgeLiesInLineWithVerticalLine) {
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if (mRectLieAboveVerticalLine || mRectLieBelowVerticalLine) {
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extendVerticalLineToIncludeInactiveRect();
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}
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}
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//here the case is that moving rect lies exactly in middle of two same sides of two different inactive widgets.
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else {
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//Prioritize first on the fact if the inactive rect is closer to the moving rect in Y - direction.
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if (mVerticalDistance < mVerticalDistanceFromSelectedRect) {
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mIsBetterFitHorizontalSnap = true;
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}
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else if (mVerticalDistance == mVerticalDistanceFromSelectedRect) {
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//Prioritize next if this Inactive rect's vertical edge is closer to the same vertical edge of the container rect, then the previously selected rect
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if (containerVerticalEdgeToInactiveRectVerticalEdge < mContainerVerticalEdgeDistance) {
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mIsBetterFitHorizontalSnap = true;
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}
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//Prioritize next if the Inactive rect's vertical edge lies near to same vertical edge of the container rect than the other pair
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else if (containerVerticalEdgeToInactiveRectVerticalEdge < containerOtherVerticalEdgeToInactiveRectOtherVerticalEdge) {
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mIsBetterFitHorizontalSnap = true;
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}
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else {
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//This else will happen if this rectangle being compared is exactly the same as the selected rectangle for snapping, but in opposite Y direction.
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//In that case it does not matter which is the selected rectangle. Hece we leave the already selected rectangle as the better fit.
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}
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}
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}
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}
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}
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}
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/*!
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Check if the left edge of moving rect is snappable to the incative rect's left or right edge.
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The inactive rect's edge is only chosen if it is a better fit for horizontal snapping.
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*/
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void HsSnapToLines::compareLeftSideOfMovingRectForSnapping()
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{
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checkInactiveRectLieAboveOrBelowOfMovingRect();
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checkInactiveRectVerticalEdgesInRange(mMovingRect.left());
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//calculate the distance of inactive rect's left edge and container rect's left edge
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qreal differenceContainerLeftEdgeToInactiveRectLeftEdge = mInactiveRectToCompare.left() - mContainerRect.left();
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//calculate the distance of inactive rect's right edge and container rect's right edge
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qreal differenceContainerRightEdgeToInactiveRectRightEdge = mContainerRect.right() - mInactiveRectToCompare.right();
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qreal xSnapGapAdjustment = 0.0;
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mDistanceVerticalEdges = 0.0;
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mMinDistancePosition = 0.0;
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//If only one edge of inactive rect is in snappable range, save that position
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if ((mLeftInRange && !mRightInRange)
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|| !mLeftInRange && mRightInRange) {
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if (mLeftInRange) {
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mMinDistancePosition = mInactiveRectToCompare.left();
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mDistanceVerticalEdges = mVerticalEdgeToLeftOfInactiveRect;
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xSnapGapAdjustment = 0.0;
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}
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else {
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mMinDistancePosition = mInactiveRectToCompare.right();
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mDistanceVerticalEdges = mVerticalEdgeToRightOfInactiveRect;
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xSnapGapAdjustment = mSnapGap;
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}
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}
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//else both edges of inactive rect are in range, check which is a better fit
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else if (mLeftInRange && mRightInRange) {
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//if left edge of moving rect to the left of the inactive rect is closer than the left edge of moving rect to the right of the inactive rect
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if (mVerticalEdgeToLeftOfInactiveRect < mVerticalEdgeToRightOfInactiveRect) {
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mMinDistancePosition = mInactiveRectToCompare.left();
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mDistanceVerticalEdges = mVerticalEdgeToLeftOfInactiveRect;
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xSnapGapAdjustment = 0.0;
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mRightInRange = false;
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}
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//if the left edge of inactive rect to left of moving rect is at the same distance as the right edge of inactive rect to the right of moving rect
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else if (mVerticalEdgeToLeftOfInactiveRect == mVerticalEdgeToRightOfInactiveRect) {
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//if inactive rect lies towards the left or middle of container rect, then the left edge is priortized as the selected edge for outside snapping
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if (differenceContainerLeftEdgeToInactiveRectLeftEdge <= differenceContainerRightEdgeToInactiveRectRightEdge) {
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mMinDistancePosition = mInactiveRectToCompare.left();
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mDistanceVerticalEdges = mVerticalEdgeToLeftOfInactiveRect;
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xSnapGapAdjustment = 0.0;
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mRightInRange = false;
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}
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//else right of the inactive rect lies more close to the right of the container rect, and hence prioritize it for snapping.
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else {
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mMinDistancePosition = mInactiveRectToCompare.right();
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mDistanceVerticalEdges = mVerticalEdgeToRightOfInactiveRect;
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xSnapGapAdjustment = mSnapGap;
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|
369 |
mLeftInRange = false;
|
|
370 |
}
|
|
371 |
}
|
|
372 |
//else right edge of inactive rect to the left of the moving rect is closer than the left edge of inactive rect to the left of the moving rect
|
|
373 |
else{
|
69
|
374 |
mMinDistancePosition = mInactiveRectToCompare.right();
|
|
375 |
mDistanceVerticalEdges = mVerticalEdgeToRightOfInactiveRect;
|
62
|
376 |
xSnapGapAdjustment = mSnapGap;
|
|
377 |
mLeftInRange = false;
|
|
378 |
}
|
|
379 |
}
|
|
380 |
|
69
|
381 |
//Check if this inactive rect is better fit than the previous selected rect for Horizontal - snapping
|
|
382 |
checkInactiveRectBetterFitForHorizontalSnapping(differenceContainerLeftEdgeToInactiveRectLeftEdge,
|
|
383 |
differenceContainerRightEdgeToInactiveRectRightEdge);
|
62
|
384 |
|
69
|
385 |
if (mIsBetterFitHorizontalSnap) {
|
|
386 |
qreal proposedRightOfActiveRect = mMinDistancePosition + xSnapGapAdjustment + mActiveRectWidth;
|
62
|
387 |
if (qBound(mContainerRect.left(), proposedRightOfActiveRect, mContainerRect.right())
|
|
388 |
== proposedRightOfActiveRect) {
|
|
389 |
mHorizontalSnapFound = true;
|
69
|
390 |
mHorizontalSnapPosition = mMinDistancePosition + xSnapGapAdjustment;
|
|
391 |
mMinVerticalEdgesDistance = mDistanceVerticalEdges;
|
62
|
392 |
mVerticalDistanceFromSelectedRect = mVerticalDistance;
|
|
393 |
//Save the new distance of the Chosen Rectangle's left edge from Container's left edge
|
|
394 |
mContainerVerticalEdgeDistance = differenceContainerLeftEdgeToInactiveRectLeftEdge;
|
69
|
395 |
createVerticalLine();
|
62
|
396 |
}
|
|
397 |
}
|
|
398 |
}
|
|
399 |
|
|
400 |
/*!
|
|
401 |
Check if the right edge of moving rect is snappable to the incative rect's left or right edge.
|
|
402 |
The inactive rect's edge is only chosen if it is a better fit for horizontal snapping.
|
|
403 |
*/
|
|
404 |
void HsSnapToLines::compareRightSideOfMovingRectForSnapping()
|
|
405 |
{
|
|
406 |
checkInactiveRectLieAboveOrBelowOfMovingRect();
|
|
407 |
|
69
|
408 |
checkInactiveRectVerticalEdgesInRange(mMovingRect.right());
|
62
|
409 |
|
|
410 |
//calculate the distance of inactive rect's left edge and container rect's left edge
|
|
411 |
qreal differenceContainerLeftEdgeToInactiveRectLeftEdge = mInactiveRectToCompare.left() - mContainerRect.left();
|
|
412 |
//calculate the distance of inactive rect's right edge and container rect's right edge
|
|
413 |
qreal differenceContainerRightEdgeToInactiveRectRightEdge = mContainerRect.right() - mInactiveRectToCompare.right();
|
|
414 |
qreal xSnapGapAdjustment = 0.0;
|
69
|
415 |
mDistanceVerticalEdges = 0.0;
|
|
416 |
mMinDistancePosition = 0.0;
|
62
|
417 |
|
|
418 |
//If only one edge of inactive rect is in snappable range, save that position
|
|
419 |
if ((mLeftInRange && !mRightInRange)
|
|
420 |
|| !mLeftInRange && mRightInRange) {
|
|
421 |
if (mLeftInRange) {
|
69
|
422 |
mMinDistancePosition = mInactiveRectToCompare.left();
|
|
423 |
mDistanceVerticalEdges = mVerticalEdgeToLeftOfInactiveRect;
|
62
|
424 |
xSnapGapAdjustment = mSnapGap;
|
|
425 |
}
|
|
426 |
else {
|
69
|
427 |
mMinDistancePosition = mInactiveRectToCompare.right();
|
|
428 |
mDistanceVerticalEdges = mVerticalEdgeToRightOfInactiveRect;
|
62
|
429 |
xSnapGapAdjustment = 0.0;
|
|
430 |
}
|
|
431 |
}
|
|
432 |
//else both edges of inactive rect are in range, check which is a better fit
|
|
433 |
else if (mLeftInRange && mRightInRange) {
|
|
434 |
//if right edge of moving rect to the right of the inactive rect is closer than the right edge of moving rect to the left of inactive rect
|
69
|
435 |
if (mVerticalEdgeToRightOfInactiveRect < mVerticalEdgeToLeftOfInactiveRect) {
|
|
436 |
mMinDistancePosition = mInactiveRectToCompare.right();
|
|
437 |
mDistanceVerticalEdges = mVerticalEdgeToRightOfInactiveRect;
|
62
|
438 |
xSnapGapAdjustment = 0.0;
|
|
439 |
mLeftInRange = false;
|
|
440 |
}
|
|
441 |
//if the right edge of moving rect to right of inactive rect is at the same distance as the right edge of moving rect to the left of inactive rect
|
69
|
442 |
else if (mVerticalEdgeToRightOfInactiveRect == mVerticalEdgeToLeftOfInactiveRect) {
|
62
|
443 |
//if inactive rect lies towards the right of container rect, then the right edge is priortized as the selected edge for outside snapping
|
|
444 |
if (differenceContainerRightEdgeToInactiveRectRightEdge < differenceContainerLeftEdgeToInactiveRectLeftEdge ) {
|
69
|
445 |
mMinDistancePosition = mInactiveRectToCompare.right();
|
|
446 |
mDistanceVerticalEdges = mVerticalEdgeToRightOfInactiveRect;
|
62
|
447 |
xSnapGapAdjustment = 0.0;
|
|
448 |
mLeftInRange = false;
|
|
449 |
}
|
|
450 |
//else left of the inactive rect lies more close to the left or middle of the container rect, and hence prioritize it
|
|
451 |
else {
|
69
|
452 |
mMinDistancePosition = mInactiveRectToCompare.left();
|
|
453 |
mDistanceVerticalEdges = mVerticalEdgeToLeftOfInactiveRect;
|
62
|
454 |
xSnapGapAdjustment = mSnapGap;
|
|
455 |
mRightInRange = false;
|
|
456 |
}
|
|
457 |
}
|
|
458 |
//else right edge of moving rect to the left of the inactive rect is closer than the right edge of moving rect to the right of the incoming rect
|
|
459 |
else{
|
69
|
460 |
mMinDistancePosition = mInactiveRectToCompare.left();
|
|
461 |
mDistanceVerticalEdges = mVerticalEdgeToLeftOfInactiveRect;
|
62
|
462 |
xSnapGapAdjustment = mSnapGap;
|
|
463 |
mRightInRange = false;
|
|
464 |
}
|
|
465 |
}
|
|
466 |
|
|
467 |
//Check if this inactive rect is better fit than the previous selected rect
|
69
|
468 |
checkInactiveRectBetterFitForHorizontalSnapping(differenceContainerRightEdgeToInactiveRectRightEdge,
|
|
469 |
differenceContainerLeftEdgeToInactiveRectLeftEdge);
|
62
|
470 |
|
69
|
471 |
if (mIsBetterFitHorizontalSnap) {
|
|
472 |
qreal proposedLeftOfActiveRect = mMinDistancePosition - mActiveRectWidth - xSnapGapAdjustment;
|
62
|
473 |
if (qBound(mContainerRect.left(), proposedLeftOfActiveRect, mContainerRect.right())
|
|
474 |
== proposedLeftOfActiveRect) {
|
|
475 |
mHorizontalSnapFound = true;
|
|
476 |
mHorizontalSnapPosition = proposedLeftOfActiveRect;
|
69
|
477 |
mMinVerticalEdgesDistance = mDistanceVerticalEdges;
|
62
|
478 |
mVerticalDistanceFromSelectedRect = mVerticalDistance;
|
|
479 |
//Save the new distance of the Chosen Rectangle's right edge from Container's right edge
|
|
480 |
mContainerVerticalEdgeDistance = differenceContainerRightEdgeToInactiveRectRightEdge;
|
69
|
481 |
createVerticalLine();
|
|
482 |
}
|
|
483 |
}
|
|
484 |
}
|
62
|
485 |
|
69
|
486 |
/*!
|
|
487 |
Create the vertical line for horizontal snap guidance
|
|
488 |
*/
|
|
489 |
void HsSnapToLines::createVerticalLine()
|
|
490 |
{
|
|
491 |
if (mRectLieAbove) {
|
|
492 |
mVerticalLine.setP1(QPointF(mMinDistancePosition, mInactiveRectToCompare.top()));
|
|
493 |
mVerticalLine.setP2(QPointF(mMinDistancePosition, mMovingRect.bottom()));
|
|
494 |
}
|
|
495 |
else {
|
|
496 |
mVerticalLine.setP1(QPointF(mMinDistancePosition, mInactiveRectToCompare.bottom()));
|
|
497 |
mVerticalLine.setP2(QPointF(mMinDistancePosition, mMovingRect.top()));
|
62
|
498 |
}
|
|
499 |
}
|
|
500 |
|
|
501 |
/*!
|
|
502 |
Check if the inactive rect being compared with moving rect lies on left or right of moving rect.
|
|
503 |
*/
|
|
504 |
void HsSnapToLines::checkInactiveRectLieLeftOrRightOfMovingRect()
|
|
505 |
{
|
|
506 |
mRectLieLeft = false;
|
|
507 |
mHorizontalDistance = 0.0;
|
|
508 |
//Inactive Rect lies left of the Moving Rect
|
|
509 |
if (mInactiveRectToCompare.left() < mMovingRect.left()) {
|
|
510 |
mRectLieLeft = true;
|
|
511 |
if (mInactiveRectToCompare.right() <= mMovingRect.left()) {
|
|
512 |
mHorizontalDistance = mMovingRect.left() - mInactiveRectToCompare.right();
|
|
513 |
}
|
|
514 |
else {
|
|
515 |
mHorizontalDistance = mMovingRect.left() - mInactiveRectToCompare.left();
|
|
516 |
}
|
|
517 |
}
|
|
518 |
//Inactive Rect lies right of the Moving Rect
|
|
519 |
else {
|
|
520 |
mRectLieLeft = false;
|
|
521 |
if (mMovingRect.right() <= mInactiveRectToCompare.left()) {
|
|
522 |
mHorizontalDistance = mInactiveRectToCompare.left() - mMovingRect.right();
|
|
523 |
}
|
|
524 |
else {
|
|
525 |
mHorizontalDistance = mInactiveRectToCompare.right() - mMovingRect.right();
|
|
526 |
}
|
|
527 |
}
|
|
528 |
}
|
|
529 |
|
|
530 |
/*!
|
69
|
531 |
Check if the Horizontal edges (Top and Bottom Edges) of the inactive rect being compared
|
|
532 |
is in range of the snapping distance of the horizontal edge of moving rect
|
|
533 |
\param movingRectHorizontalEdgePosition Position of the Horizontal edge(either top or bottom) of moving rect.
|
62
|
534 |
*/
|
69
|
535 |
void HsSnapToLines::checkInactiveRectHorizontalEdgesInRange(qreal movingRectHorizontalEdgePosition)
|
62
|
536 |
{
|
|
537 |
mTopInRange = false;
|
|
538 |
mBottomInRange = false;
|
|
539 |
|
69
|
540 |
//calculate the distance of the moving rect's horizontal edge to the inactive rect's top and bottom edges
|
|
541 |
mHorizontalEdgeToTopOfInactiveRect = qAbs(mInactiveRectToCompare.top() - movingRectHorizontalEdgePosition);
|
|
542 |
mHorizontalEdgeToBottomOfInactiveRect = qAbs(mInactiveRectToCompare.bottom() - movingRectHorizontalEdgePosition);
|
|
543 |
|
|
544 |
if (mHorizontalEdgeToTopOfInactiveRect <= mMinHorizontalEdgesDistance) {
|
62
|
545 |
if (mRectLieLeft && mInactiveSnapRectToCompare.isTopSnapableForRight
|
|
546 |
|| !mRectLieLeft && mInactiveSnapRectToCompare.isTopSnapableForLeft) {
|
|
547 |
mTopInRange = true;
|
|
548 |
}
|
|
549 |
}
|
69
|
550 |
if (mHorizontalEdgeToBottomOfInactiveRect <= mMinHorizontalEdgesDistance) {
|
62
|
551 |
if (mRectLieLeft && mInactiveSnapRectToCompare.isBottomSnapableForRight
|
|
552 |
|| !mRectLieLeft && mInactiveSnapRectToCompare.isBottomSnapableForLeft) {
|
|
553 |
mBottomInRange = true;
|
|
554 |
}
|
|
555 |
}
|
69
|
556 |
}
|
62
|
557 |
|
69
|
558 |
/*!
|
|
559 |
Check if this inactive rect is better fit for Vertical snapping
|
|
560 |
\param containerHorizontalEdgeToInactiveRectHorizontalEdge
|
|
561 |
difference between the horizontal edge of the container and same horizontal edge of inactive rect
|
|
562 |
\param containerOtherHorizontalEdgeToInactiveRectOtherHorizontalEdge
|
|
563 |
difference between the opposite horizontal edges of continer and the inactive rect
|
|
564 |
*/
|
|
565 |
void HsSnapToLines::checkInactiveRectBetterFitForVerticalSnapping(qreal containerHorizontalEdgeToInactiveRectHorizontalEdge,
|
|
566 |
qreal containerOtherHorizontalEdgeToInactiveRectOtherHorizontalEdge)
|
|
567 |
{
|
|
568 |
mIsBetterFitVerticalSnap = false;
|
|
569 |
if (mTopInRange || mBottomInRange) {
|
|
570 |
if (mDistanceHorizontalEdges < mMinHorizontalEdgesDistance) {
|
|
571 |
mIsBetterFitVerticalSnap = true;
|
62
|
572 |
}
|
69
|
573 |
else if (mDistanceHorizontalEdges == mMinHorizontalEdgesDistance) { //the distance in the horizontal edge is same as from the selected rectangle
|
62
|
574 |
//check the position of rect with respect to horizontal line
|
|
575 |
checkInactiveRectPositionToHorizontalLine();
|
|
576 |
//if vertical snap position was already found and this rect's horizontal edges lies in line with Horizontal snap line
|
|
577 |
if (mVerticalSnapFound && mRectHorizontalEdgeLiesInLineWithHorizontalLine) {
|
|
578 |
if (mRectLieLeftOfHorizontalLine || mRectLiesRightOfHorizontalLine) {
|
|
579 |
extendHorizontalLineToIncludeInactiveRect();
|
|
580 |
}
|
|
581 |
}
|
|
582 |
else {
|
|
583 |
//Prioritize first on the fact if the inactive rect is closer to the moving rect in X - direction.
|
|
584 |
if (mHorizontalDistance < mHorizontalDistanceFromSelectedRect) {
|
69
|
585 |
mIsBetterFitVerticalSnap = true;
|
62
|
586 |
}
|
|
587 |
else if (mHorizontalDistance == mHorizontalDistanceFromSelectedRect) {
|
|
588 |
//Prioritize next if this Inactive rect is closer to the top edge of the container rect, then the previously selected rect
|
69
|
589 |
if (containerHorizontalEdgeToInactiveRectHorizontalEdge < mContainerHorizontalEdgeDistance) {
|
|
590 |
mIsBetterFitVerticalSnap = true;
|
62
|
591 |
}
|
|
592 |
//Prioritize next if the Inactive widget's top edge lies near to top edge of the container rect
|
69
|
593 |
else if (containerHorizontalEdgeToInactiveRectHorizontalEdge < containerOtherHorizontalEdgeToInactiveRectOtherHorizontalEdge) {
|
|
594 |
mIsBetterFitVerticalSnap = true;
|
62
|
595 |
}
|
|
596 |
else {
|
|
597 |
//This else will happen if this rectangle being compared is exactly the same as the selected rectangle for snapping, or in opposite X direction.
|
|
598 |
//In that case it does not matter which is the selected rectangle. Hence we leave the already selected rectangle as the better fit.
|
|
599 |
}
|
|
600 |
}
|
|
601 |
}
|
|
602 |
}
|
|
603 |
}
|
|
604 |
|
69
|
605 |
}
|
|
606 |
|
|
607 |
/*!
|
|
608 |
Check if the top edge of moving rect is snappable to the incative rect's top or bottom edge.
|
|
609 |
The inactive rect's edge is only chosen if it is a better fit for vertical snapping.
|
|
610 |
*/
|
|
611 |
void HsSnapToLines::compareTopOfMovingRectForSnapping()
|
|
612 |
{
|
|
613 |
//Check if the inactive rect lies to the left or right of the moving rect
|
|
614 |
checkInactiveRectLieLeftOrRightOfMovingRect();
|
|
615 |
|
|
616 |
checkInactiveRectHorizontalEdgesInRange(mMovingRect.top());
|
|
617 |
|
|
618 |
//calculate the distance of inactive rect's top edge and container rect's top edge
|
|
619 |
qreal differenceContainerTopEdgeToInactiveRectTopEdge = mInactiveRectToCompare.top() - mContainerRect.top();
|
|
620 |
//calculate the distance of inactive rect's bottom edge and container rect's bottom edge
|
|
621 |
qreal differenceContainerBottomEdgeToInactiveRectBottomEdge = mContainerRect.bottom() - mInactiveRectToCompare.bottom();
|
|
622 |
qreal ySnapGapAdjustment = 0.0;
|
|
623 |
mDistanceHorizontalEdges = 0.0;
|
|
624 |
mMinDistancePosition = 0.0;
|
|
625 |
|
|
626 |
//If only one edge of inactive rect is in snappable range, save that position
|
|
627 |
if ((mTopInRange && !mBottomInRange)
|
|
628 |
|| !mTopInRange && mBottomInRange) {
|
|
629 |
if (mTopInRange) {
|
|
630 |
mMinDistancePosition = mInactiveRectToCompare.top();
|
|
631 |
mDistanceHorizontalEdges = mHorizontalEdgeToTopOfInactiveRect;
|
|
632 |
ySnapGapAdjustment = 0.0;
|
|
633 |
}
|
|
634 |
else {
|
|
635 |
mMinDistancePosition = mInactiveRectToCompare.bottom();
|
|
636 |
mDistanceHorizontalEdges = mHorizontalEdgeToBottomOfInactiveRect;
|
|
637 |
ySnapGapAdjustment = mSnapGap;
|
|
638 |
}
|
|
639 |
}
|
|
640 |
//else both edges of inactive rect are in range, check which is a better fit
|
|
641 |
else if (mTopInRange && mBottomInRange) {
|
|
642 |
//if top edge of moving rect to the top of the inactive rect is closer than the bottom edge of moving rect to the bottom of the inactive rect
|
|
643 |
if (mHorizontalEdgeToTopOfInactiveRect < mHorizontalEdgeToBottomOfInactiveRect) {
|
|
644 |
mMinDistancePosition = mInactiveRectToCompare.top();
|
|
645 |
mDistanceHorizontalEdges = mHorizontalEdgeToTopOfInactiveRect;
|
|
646 |
ySnapGapAdjustment = 0.0;
|
|
647 |
mBottomInRange = false;
|
|
648 |
}
|
|
649 |
//if the top edge of moving rect to top of inactive rect is at the same distance as the top edge of moving rect to the bottom of inactive rect
|
|
650 |
else if (mHorizontalEdgeToTopOfInactiveRect == mHorizontalEdgeToBottomOfInactiveRect) {
|
|
651 |
//if inactive rect lies towards the top or middle of container rect, then the top edge is priortized as the selected edge for outside snapping
|
|
652 |
if (differenceContainerTopEdgeToInactiveRectTopEdge <= differenceContainerBottomEdgeToInactiveRectBottomEdge) {
|
|
653 |
mMinDistancePosition = mInactiveRectToCompare.top();
|
|
654 |
mDistanceHorizontalEdges = mHorizontalEdgeToTopOfInactiveRect;
|
|
655 |
ySnapGapAdjustment = 0.0;
|
|
656 |
mBottomInRange = false;
|
|
657 |
}
|
|
658 |
//else bottom of the inactive rect lies more close to the bottom of the container rect, and hence prioritize it for snapping.
|
|
659 |
else {
|
|
660 |
mMinDistancePosition = mInactiveRectToCompare.bottom();
|
|
661 |
mDistanceHorizontalEdges = mHorizontalEdgeToBottomOfInactiveRect;
|
|
662 |
ySnapGapAdjustment = mSnapGap;
|
|
663 |
mTopInRange = false;
|
|
664 |
}
|
|
665 |
}
|
|
666 |
//else top edge of moving rect to the bottom of the inactive rect is closer than the top edge of moving rect to the top of the inactive rect
|
|
667 |
else{
|
|
668 |
mMinDistancePosition = mInactiveRectToCompare.bottom();
|
|
669 |
mDistanceHorizontalEdges = mHorizontalEdgeToBottomOfInactiveRect;
|
|
670 |
ySnapGapAdjustment = mSnapGap;
|
|
671 |
mTopInRange = false;
|
|
672 |
}
|
|
673 |
}
|
|
674 |
|
|
675 |
//Check if this inactive rect is better fit than the previous selected rect
|
|
676 |
checkInactiveRectBetterFitForVerticalSnapping(differenceContainerTopEdgeToInactiveRectTopEdge,
|
|
677 |
differenceContainerBottomEdgeToInactiveRectBottomEdge);
|
|
678 |
|
|
679 |
if (mIsBetterFitVerticalSnap) {
|
|
680 |
qreal proposedBottomOfActiveRect = mMinDistancePosition + mActiveRectHeight + ySnapGapAdjustment;
|
62
|
681 |
if (qBound(mContainerRect.top(), proposedBottomOfActiveRect, mContainerRect.bottom())
|
|
682 |
== proposedBottomOfActiveRect) {
|
|
683 |
mVerticalSnapFound = true;
|
69
|
684 |
mVerticalSnapPosition = mMinDistancePosition + ySnapGapAdjustment;
|
|
685 |
mMinHorizontalEdgesDistance = mDistanceHorizontalEdges;
|
62
|
686 |
mHorizontalDistanceFromSelectedRect = mHorizontalDistance;
|
|
687 |
//Save the new distance of the Chosen Rectangle's top edge from Container's top edge
|
|
688 |
mContainerHorizontalEdgeDistance = differenceContainerTopEdgeToInactiveRectTopEdge;
|
69
|
689 |
createHorizontalLine();
|
62
|
690 |
}
|
|
691 |
}
|
|
692 |
}
|
|
693 |
|
|
694 |
/*!
|
|
695 |
Check if the bottom edge of moving rect is snappable to the incative rect's top or bottom edge.
|
|
696 |
The inactive rect's edge is only chosen if it is a better fit for vertical snapping.
|
|
697 |
*/
|
|
698 |
void HsSnapToLines::compareBottomOfMovingRectForSnapping()
|
|
699 |
{
|
|
700 |
//Check if the inactive rect lies to the left or right of the moving rect
|
|
701 |
checkInactiveRectLieLeftOrRightOfMovingRect();
|
|
702 |
|
|
703 |
//calculate the distance of the moving rect's bottom edge to the inactive rect's top and bottom edges
|
69
|
704 |
checkInactiveRectHorizontalEdgesInRange(mMovingRect.bottom());
|
62
|
705 |
|
|
706 |
//calculate the distance of inactive rect's top edge and container rect's top edge
|
|
707 |
qreal differenceContainerTopEdgeToInactiveRectTopEdge = mInactiveRectToCompare.top() - mContainerRect.top();
|
|
708 |
//calculate the distance of inactive rect's bottom edge and container rect's bottom edge
|
|
709 |
qreal differenceContainerBottomEdgeToInactiveRectBottomEdge = mContainerRect.bottom() - mInactiveRectToCompare.bottom();
|
|
710 |
qreal ySnapGapAdjustment = 0.0;
|
69
|
711 |
mDistanceHorizontalEdges = 0.0;
|
|
712 |
mMinDistancePosition = 0.0;
|
62
|
713 |
|
|
714 |
//If only one edge of inactive rect is in snappable range, save that position
|
|
715 |
if ((mTopInRange && !mBottomInRange)
|
|
716 |
|| !mTopInRange && mBottomInRange) {
|
|
717 |
if (mTopInRange) {
|
69
|
718 |
mMinDistancePosition = mInactiveRectToCompare.top();
|
|
719 |
mDistanceHorizontalEdges = mHorizontalEdgeToTopOfInactiveRect;
|
62
|
720 |
ySnapGapAdjustment = mSnapGap;
|
|
721 |
}
|
|
722 |
else {
|
69
|
723 |
mMinDistancePosition = mInactiveRectToCompare.bottom();
|
|
724 |
mDistanceHorizontalEdges = mHorizontalEdgeToBottomOfInactiveRect;
|
62
|
725 |
ySnapGapAdjustment = 0.0;
|
|
726 |
}
|
|
727 |
}
|
|
728 |
//else both edges of inactive rect are in range, check which is a better fit
|
|
729 |
else if (mTopInRange && mBottomInRange) {
|
|
730 |
//if bottom edge of moving rect to the bottom of inactive rect is closer than the bottom edge of moving rect to the top of the inactive rect
|
69
|
731 |
if (mHorizontalEdgeToBottomOfInactiveRect < mHorizontalEdgeToTopOfInactiveRect ) {
|
|
732 |
mMinDistancePosition = mInactiveRectToCompare.bottom();
|
|
733 |
mDistanceHorizontalEdges = mHorizontalEdgeToBottomOfInactiveRect;
|
62
|
734 |
ySnapGapAdjustment = 0.0;
|
|
735 |
mTopInRange = false;
|
|
736 |
}
|
|
737 |
//if bottom edge of moving rect to the bottom of inactive rect is at the same distance as the bottom edge of moving rect to the top of inactive rect
|
69
|
738 |
else if (mHorizontalEdgeToBottomOfInactiveRect == mHorizontalEdgeToTopOfInactiveRect) {
|
62
|
739 |
//if inactive rect lies towards the bottom of container rect, then the bottom edge is priortized as the selected edge for snapping
|
|
740 |
//This is done for outside snapping
|
|
741 |
if (differenceContainerBottomEdgeToInactiveRectBottomEdge < differenceContainerTopEdgeToInactiveRectTopEdge) {
|
69
|
742 |
mMinDistancePosition = mInactiveRectToCompare.bottom();
|
|
743 |
mDistanceHorizontalEdges = mHorizontalEdgeToBottomOfInactiveRect;
|
62
|
744 |
ySnapGapAdjustment = 0.0;
|
|
745 |
mTopInRange = false;
|
|
746 |
}
|
|
747 |
//else top of the inactive rect lies more close to the top of the container rect or at the same distance, and hence prioritize it
|
|
748 |
else {
|
69
|
749 |
mMinDistancePosition = mInactiveRectToCompare.top();
|
|
750 |
mDistanceHorizontalEdges = mHorizontalEdgeToTopOfInactiveRect;
|
62
|
751 |
ySnapGapAdjustment = mSnapGap;
|
|
752 |
mBottomInRange = false;
|
|
753 |
}
|
|
754 |
}
|
|
755 |
//else bottom edge of moving rect to the top of inactive rect is closer than the bottom edge of moving rect to the bottom of the inactive rect
|
|
756 |
else{
|
69
|
757 |
mMinDistancePosition = mInactiveRectToCompare.top();
|
|
758 |
mDistanceHorizontalEdges = mHorizontalEdgeToTopOfInactiveRect;
|
62
|
759 |
ySnapGapAdjustment = mSnapGap;
|
|
760 |
mBottomInRange = false;
|
|
761 |
}
|
|
762 |
}
|
|
763 |
|
|
764 |
//Check if this inactive rect is better fit than the previous selected rect
|
69
|
765 |
checkInactiveRectBetterFitForVerticalSnapping(differenceContainerBottomEdgeToInactiveRectBottomEdge,
|
|
766 |
differenceContainerTopEdgeToInactiveRectTopEdge);
|
62
|
767 |
|
69
|
768 |
if (mIsBetterFitVerticalSnap) {
|
|
769 |
qreal proposedTopOfActiveRect = mMinDistancePosition - mActiveRectHeight - ySnapGapAdjustment;
|
62
|
770 |
if (qBound(mContainerRect.top(), proposedTopOfActiveRect, mContainerRect.bottom())
|
|
771 |
== proposedTopOfActiveRect) {
|
|
772 |
mVerticalSnapFound = true;
|
|
773 |
mVerticalSnapPosition = proposedTopOfActiveRect;
|
69
|
774 |
mMinHorizontalEdgesDistance = mDistanceHorizontalEdges;
|
62
|
775 |
mHorizontalDistanceFromSelectedRect = mHorizontalDistance;
|
|
776 |
//Save the new distance of the Selected Rectangle's bottom edge from Container's bottom edge
|
|
777 |
mContainerHorizontalEdgeDistance = differenceContainerBottomEdgeToInactiveRectBottomEdge;
|
69
|
778 |
createHorizontalLine();
|
|
779 |
}
|
|
780 |
}
|
|
781 |
}
|
62
|
782 |
|
69
|
783 |
/*!
|
|
784 |
Create the horizontal line for vertical snap guidance
|
|
785 |
*/
|
|
786 |
void HsSnapToLines::createHorizontalLine()
|
|
787 |
{
|
|
788 |
if (mRectLieLeft) {
|
|
789 |
//save the points for the Horizontal line
|
|
790 |
mHorizontalLine.setP1(QPointF(mInactiveRectToCompare.left(), mMinDistancePosition));
|
|
791 |
mHorizontalLine.setP2(QPointF(mMovingRect.right(), mMinDistancePosition));
|
|
792 |
}
|
|
793 |
else {
|
|
794 |
//save the points for the Horizontal line
|
|
795 |
mHorizontalLine.setP1(QPointF(mInactiveRectToCompare.right(), mMinDistancePosition));
|
|
796 |
mHorizontalLine.setP2(QPointF(mMovingRect.left(), mMinDistancePosition));
|
62
|
797 |
}
|
|
798 |
}
|
|
799 |
|
|
800 |
/*!
|
|
801 |
Extend the Vertical line on both side of reference(snapping) rectancles.
|
|
802 |
*/
|
|
803 |
void HsSnapToLines::extendVerticalLine()
|
|
804 |
{
|
|
805 |
if (mVerticalLine.y1() <= mVerticalLine.y2()) {
|
|
806 |
mVerticalLine.setP1(QPointF(mVerticalLine.x1(), mVerticalLine.y1() - SNAP_LINE_EXTEND_VALUE));
|
|
807 |
mVerticalLine.setP2(QPointF(mVerticalLine.x2(), mVerticalLine.y2() + SNAP_LINE_EXTEND_VALUE));
|
|
808 |
}
|
|
809 |
else {
|
|
810 |
mVerticalLine.setP1(QPointF(mVerticalLine.x1(), mVerticalLine.y1() + SNAP_LINE_EXTEND_VALUE));
|
|
811 |
mVerticalLine.setP2(QPointF(mVerticalLine.x2(), mVerticalLine.y2() - SNAP_LINE_EXTEND_VALUE));
|
|
812 |
}
|
|
813 |
}
|
|
814 |
|
|
815 |
/*!
|
|
816 |
Extend the Horizontal line on both side of reference(snapping) rectancles.
|
|
817 |
*/
|
|
818 |
void HsSnapToLines::extendHorizontalLine()
|
|
819 |
{
|
|
820 |
if (mHorizontalLine.x1() <= mHorizontalLine.x2()) {
|
|
821 |
mHorizontalLine.setP1(QPointF(mHorizontalLine.x1() - SNAP_LINE_EXTEND_VALUE, mHorizontalLine.y1()));
|
|
822 |
mHorizontalLine.setP2(QPointF(mHorizontalLine.x2() + SNAP_LINE_EXTEND_VALUE, mHorizontalLine.y2()));
|
|
823 |
}
|
|
824 |
else {
|
|
825 |
mHorizontalLine.setP1(QPointF(mHorizontalLine.x1() + SNAP_LINE_EXTEND_VALUE, mHorizontalLine.y1()));
|
|
826 |
mHorizontalLine.setP2(QPointF(mHorizontalLine.x2() - SNAP_LINE_EXTEND_VALUE, mHorizontalLine.y2()));
|
|
827 |
}
|
|
828 |
}
|
|
829 |
|
|
830 |
/*!
|
|
831 |
Check if the Vertical edge of the Rectangle lies out of the Vertical line.
|
|
832 |
Also check if the rectangle's edge lies out of the line.
|
|
833 |
*/
|
|
834 |
void HsSnapToLines::checkInactiveRectPositionToVerticalLine()
|
|
835 |
{
|
|
836 |
mRectVerticalEdgeLiesInLineWithVerticalLine = false;
|
|
837 |
mRectLieAboveVerticalLine = false;
|
|
838 |
mRectLieBelowVerticalLine = false;
|
|
839 |
|
|
840 |
//if rectangle vertical edge lies inline with Vertical line.
|
|
841 |
if ((mLeftInRange && mInactiveRectToCompare.left() == mVerticalLine.x1())
|
|
842 |
|| (mRightInRange && mInactiveRectToCompare.right() == mVerticalLine.x1())) {
|
|
843 |
mRectVerticalEdgeLiesInLineWithVerticalLine = true;
|
|
844 |
//if the rectangle lies below the vertical line
|
|
845 |
if (mInactiveRectToCompare.bottom() > mVerticalLine.y1() && mInactiveRectToCompare.bottom() > mVerticalLine.y2()) {
|
|
846 |
mRectLieBelowVerticalLine = true;
|
|
847 |
}
|
|
848 |
//if the rectangle lies above the vertical line
|
|
849 |
if (mInactiveRectToCompare.top() < mVerticalLine.y1() && mInactiveRectToCompare.top() < mVerticalLine.y2()) {
|
|
850 |
mRectLieAboveVerticalLine = true;
|
|
851 |
}
|
|
852 |
}
|
|
853 |
}
|
|
854 |
|
|
855 |
/*!
|
|
856 |
Increase the Vertical line to include the inactive rect whose vertical edge is inline with vertical line
|
|
857 |
*/
|
|
858 |
void HsSnapToLines::extendVerticalLineToIncludeInactiveRect()
|
|
859 |
{
|
|
860 |
if (mRectLieAboveVerticalLine) {
|
|
861 |
if (mVerticalLine.y1() < mVerticalLine.y2()) {
|
|
862 |
mVerticalLine.setP1(QPointF(mVerticalLine.x1(), mInactiveRectToCompare.top()));
|
|
863 |
}
|
|
864 |
else {
|
|
865 |
mVerticalLine.setP2(QPointF(mVerticalLine.x1(), mInactiveRectToCompare.top()));
|
|
866 |
}
|
|
867 |
}
|
|
868 |
if (mRectLieBelowVerticalLine) {
|
|
869 |
if (mVerticalLine.y1() < mVerticalLine.y2()) {
|
|
870 |
mVerticalLine.setP2(QPointF(mVerticalLine.x1(), mInactiveRectToCompare.bottom()));
|
|
871 |
}
|
|
872 |
else {
|
|
873 |
mVerticalLine.setP1(QPointF(mVerticalLine.x1(), mInactiveRectToCompare.bottom()));
|
|
874 |
}
|
|
875 |
}
|
|
876 |
}
|
|
877 |
|
|
878 |
/*!
|
|
879 |
Check if the Horizontal edge of the Rectangle lies inline with the Horizontal line.
|
|
880 |
Also check if the rectangle's edge lies out of the line.
|
|
881 |
*/
|
|
882 |
void HsSnapToLines::checkInactiveRectPositionToHorizontalLine()
|
|
883 |
{
|
|
884 |
mRectHorizontalEdgeLiesInLineWithHorizontalLine = false;
|
|
885 |
mRectLieLeftOfHorizontalLine = false;
|
|
886 |
mRectLiesRightOfHorizontalLine = false;
|
|
887 |
|
|
888 |
//if rectangle horizontal edge lies inline with Horizontal line.
|
|
889 |
if ((mTopInRange && mInactiveRectToCompare.top() == mHorizontalLine.y1())
|
|
890 |
|| (mBottomInRange && mInactiveRectToCompare.bottom() == mHorizontalLine.y1())) {
|
|
891 |
mRectHorizontalEdgeLiesInLineWithHorizontalLine = true;
|
|
892 |
//if the rectangle lies left of the horizontal line
|
|
893 |
if (mInactiveRectToCompare.left() < mHorizontalLine.x1() && mInactiveRectToCompare.left() < mHorizontalLine.x2()) {
|
|
894 |
mRectLieLeftOfHorizontalLine = true;
|
|
895 |
}
|
|
896 |
//if the rectangle lies right of the horizontal line
|
|
897 |
if (mInactiveRectToCompare.right() > mHorizontalLine.x1() && mInactiveRectToCompare.right() > mHorizontalLine.x2()) {
|
|
898 |
mRectLiesRightOfHorizontalLine = true;
|
|
899 |
}
|
|
900 |
}
|
|
901 |
}
|
|
902 |
|
|
903 |
/*!
|
|
904 |
Increase the Horizontal line to include the inactive rect whose horizontal edge is inline with horizontal line
|
|
905 |
*/
|
|
906 |
void HsSnapToLines::extendHorizontalLineToIncludeInactiveRect()
|
|
907 |
{
|
|
908 |
if (mRectLieLeftOfHorizontalLine) {
|
|
909 |
if (mHorizontalLine.x1() < mHorizontalLine.x2()) {
|
|
910 |
mHorizontalLine.setP1(QPointF(mInactiveRectToCompare.left(), mHorizontalLine.y1()));
|
|
911 |
}
|
|
912 |
else {
|
|
913 |
mHorizontalLine.setP2(QPointF(mInactiveRectToCompare.left(), mHorizontalLine.y1()));
|
|
914 |
}
|
|
915 |
}
|
|
916 |
if (mRectLiesRightOfHorizontalLine) {
|
|
917 |
if (mHorizontalLine.x1() < mHorizontalLine.x2()) {
|
|
918 |
mHorizontalLine.setP2(QPointF(mInactiveRectToCompare.right(), mHorizontalLine.y1()));
|
|
919 |
}
|
|
920 |
else {
|
|
921 |
mHorizontalLine.setP1(QPointF(mInactiveRectToCompare.right(), mHorizontalLine.y1()));
|
|
922 |
}
|
|
923 |
}
|
|
924 |
}
|