diff options
Diffstat (limited to 'src/quick/items/qquickflickable.cpp')
| -rw-r--r-- | src/quick/items/qquickflickable.cpp | 127 |
1 files changed, 50 insertions, 77 deletions
diff --git a/src/quick/items/qquickflickable.cpp b/src/quick/items/qquickflickable.cpp index f0a68b184a..15627aad84 100644 --- a/src/quick/items/qquickflickable.cpp +++ b/src/quick/items/qquickflickable.cpp @@ -41,6 +41,7 @@ #include "qquickflickable_p.h" #include "qquickflickable_p_p.h" +#include "qquickflickablebehavior_p.h" #include "qquickwindow.h" #include "qquickwindow_p.h" #include "qquickevents_p_p.h" @@ -58,52 +59,6 @@ QT_BEGIN_NAMESPACE -// The maximum number of pixels a flick can overshoot -#ifndef QML_FLICK_OVERSHOOT -#define QML_FLICK_OVERSHOOT 150 -#endif - -// The number of samples to use in calculating the velocity of a flick -#ifndef QML_FLICK_SAMPLEBUFFER -#define QML_FLICK_SAMPLEBUFFER 3 -#endif - -// The number of samples to discard when calculating the flick velocity. -// Touch panels often produce inaccurate results as the finger is lifted. -#ifndef QML_FLICK_DISCARDSAMPLES -#define QML_FLICK_DISCARDSAMPLES 0 -#endif - -// The default maximum velocity of a flick. -#ifndef QML_FLICK_DEFAULTMAXVELOCITY -#define QML_FLICK_DEFAULTMAXVELOCITY 2500 -#endif - -// The default deceleration of a flick. -#ifndef QML_FLICK_DEFAULTDECELERATION -#define QML_FLICK_DEFAULTDECELERATION 1500 -#endif - -// How much faster to decelerate when overshooting -#ifndef QML_FLICK_OVERSHOOTFRICTION -#define QML_FLICK_OVERSHOOTFRICTION 8 -#endif - -// Multiflick acceleration minimum flick velocity threshold -#ifndef QML_FLICK_MULTIFLICK_THRESHOLD -#define QML_FLICK_MULTIFLICK_THRESHOLD 1250 -#endif - -// Multiflick acceleration minimum contentSize/viewSize ratio -#ifndef QML_FLICK_MULTIFLICK_RATIO -#define QML_FLICK_MULTIFLICK_RATIO 10 -#endif - -// Multiflick acceleration maximum velocity multiplier -#ifndef QML_FLICK_MULTIFLICK_MAXBOOST -#define QML_FLICK_MULTIFLICK_MAXBOOST 3.0 -#endif - // FlickThreshold determines how far the "mouse" must have moved // before we perform a flick. static const int FlickThreshold = 15; @@ -508,16 +463,27 @@ void QQuickFlickablePrivate::fixup(AxisData &data, qreal minExtent, qreal maxExt data.vTime = timeline.time(); } +static bool fuzzyLessThanOrEqualTo(qreal a, qreal b) +{ + if (a == 0.0 || b == 0.0) { + // qFuzzyCompare is broken + a += 1.0; + b += 1.0; + } + return a <= b || qFuzzyCompare(a, b); +} + void QQuickFlickablePrivate::updateBeginningEnd() { Q_Q(QQuickFlickable); bool atBoundaryChange = false; // Vertical - const int maxyextent = int(-q->maxYExtent()); + const qreal maxyextent = -q->maxYExtent(); + const qreal minyextent = -q->minYExtent(); const qreal ypos = -vData.move.value(); - bool atBeginning = (ypos <= -q->minYExtent()); - bool atEnd = (maxyextent <= ypos); + bool atBeginning = fuzzyLessThanOrEqualTo(ypos, minyextent); + bool atEnd = fuzzyLessThanOrEqualTo(maxyextent, ypos); if (atBeginning != vData.atBeginning) { vData.atBeginning = atBeginning; @@ -529,10 +495,11 @@ void QQuickFlickablePrivate::updateBeginningEnd() } // Horizontal - const int maxxextent = int(-q->maxXExtent()); + const qreal maxxextent = -q->maxXExtent(); + const qreal minxextent = -q->minXExtent(); const qreal xpos = -hData.move.value(); - atBeginning = (xpos <= -q->minXExtent()); - atEnd = (maxxextent <= xpos); + atBeginning = fuzzyLessThanOrEqualTo(xpos, minxextent); + atEnd = fuzzyLessThanOrEqualTo(maxxextent, xpos); if (atBeginning != hData.atBeginning) { hData.atBeginning = atBeginning; @@ -1046,17 +1013,20 @@ void QQuickFlickablePrivate::handleMouseMoveEvent(QMouseEvent *event) // the estimate to be altered const qreal minY = vData.dragMinBound + vData.startMargin; const qreal maxY = vData.dragMaxBound - vData.endMargin; - if (newY > minY) - newY = minY + (newY - minY) / 2; - if (newY < maxY && maxY - minY <= 0) - newY = maxY + (newY - maxY) / 2; - if (boundsBehavior == QQuickFlickable::StopAtBounds && newY <= maxY) { - newY = maxY; - rejectY = vData.pressPos == maxY && dy < 0; - } - if (boundsBehavior == QQuickFlickable::StopAtBounds && newY >= minY) { - newY = minY; - rejectY = vData.pressPos == minY && dy > 0; + if (boundsBehavior == QQuickFlickable::StopAtBounds) { + if (newY <= maxY) { + newY = maxY; + rejectY = vData.pressPos == maxY && vData.move.value() == maxY && dy < 0; + } + if (newY >= minY) { + newY = minY; + rejectY = vData.pressPos == minY && vData.move.value() == minY && dy > 0; + } + } else { + if (newY > minY) + newY = minY + (newY - minY) / 2; + if (newY < maxY && maxY - minY <= 0) + newY = maxY + (newY - maxY) / 2; } if (!rejectY && stealMouse && dy != 0.0) { clearTimeline(); @@ -1077,17 +1047,20 @@ void QQuickFlickablePrivate::handleMouseMoveEvent(QMouseEvent *event) qreal newX = dx + hData.pressPos - hData.dragStartOffset; const qreal minX = hData.dragMinBound + hData.startMargin; const qreal maxX = hData.dragMaxBound - hData.endMargin; - if (newX > minX) - newX = minX + (newX - minX) / 2; - if (newX < maxX && maxX - minX <= 0) - newX = maxX + (newX - maxX) / 2; - if (boundsBehavior == QQuickFlickable::StopAtBounds && newX <= maxX) { - newX = maxX; - rejectX = hData.pressPos == maxX && dx < 0; - } - if (boundsBehavior == QQuickFlickable::StopAtBounds && newX >= minX) { - newX = minX; - rejectX = hData.pressPos == minX && dx > 0; + if (boundsBehavior == QQuickFlickable::StopAtBounds) { + if (newX <= maxX) { + newX = maxX; + rejectX = hData.pressPos == maxX && hData.move.value() == maxX && dx < 0; + } + if (newX >= minX) { + newX = minX; + rejectX = hData.pressPos == minX && hData.move.value() == minX && dx > 0; + } + } else { + if (newX > minX) + newX = minX + (newX - minX) / 2; + if (newX < maxX && maxX - minX <= 0) + newX = maxX + (newX - maxX) / 2; } if (!rejectX && stealMouse && dx != 0.0) { @@ -1116,10 +1089,10 @@ void QQuickFlickablePrivate::handleMouseMoveEvent(QMouseEvent *event) hData.velocity = 0; } - if ((hMoved && !prevHMoved) || (vMoved && !prevVMoved)) { - draggingStarting(); + draggingStarting(); + + if ((hMoved && !prevHMoved) || (vMoved && !prevVMoved)) q->movementStarting(); - } qint64 currentTimestamp = computeCurrentTime(event); qreal elapsed = qreal(currentTimestamp - (lastPos.isNull() ? lastPressTime : lastPosTime)) / 1000.; 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