#include <dali-toolkit/internal/controls/scrollable/scroll-view/scroll-view-impl.h>
// EXTERNAL INCLUDES
+#include <dali/public-api/animation/constraints.h>
+#include <dali/public-api/common/stage.h>
#include <dali/public-api/events/mouse-wheel-event.h>
+#include <dali/public-api/events/touch-event.h>
+#include <dali/public-api/object/type-registry.h>
#include <dali/integration-api/debug.h>
// INTERNAL INCLUDES
const unsigned int MAXIMUM_NUMBER_OF_VALUES = 5; ///< Number of values to use for weighted pan calculation.
const Vector2 DEFAULT_MOUSE_WHEEL_SCROLL_DISTANCE_STEP_PROPORTION = Vector2(0.17f, 0.1f); ///< The step of horizontal scroll distance in the proportion of stage size for each mouse wheel event received.
const unsigned long MINIMUM_TIME_BETWEEN_DOWN_AND_UP_FOR_RESET( 150u );
-const float DEFAULT_OVERSHOOT_ANIMATION_DURATION = 0.35f; // time in seconds
-const Vector2 OVERSCROLL_CLAMP(1.0f, 1.0f); // maximum overscroll allowed in pixels when overshoot indicator is being used
const float TOUCH_DOWN_TIMER_INTERVAL = 100.0f;
const float DEFAULT_SCROLL_UPDATE_DISTANCE( 30.0f ); ///< Default distance to travel in pixels for scroll update signal
// Helpers ////////////////////////////////////////////////////////////////////////////////////////
-// TODO: GetAngle for Vector2 can be moved.
-// GetAngle for Vector3 needs to be measured against a normal/plane.
-
-/**
- * @param[in] vector The 3D vector to be measured
- * @return angle in radians from 0 to 2PI
- */
-float GetAngle(const Vector3& vector)
-{
- return atan2(vector.y, vector.x) + Math::PI;
-}
-
-/**
- * @param[in] vector The 2D vector to be measured
- * @return angle in radians from 0 to 2PI
- */
-float GetAngle(const Vector2& vector)
-{
- return atan2(vector.y, vector.x) + Math::PI;
-}
-
/**
* Find the vector (distance) from (a) to (b)
* in domain (start) to (end)
void ScrollView::TransformTo(const Vector3& position,
DirectionBias horizontalBias, DirectionBias verticalBias)
{
- TransformTo(position, mSnapDuration, horizontalBias, verticalBias);
+ TransformTo(position, mSnapDuration, mSnapAlphaFunction, horizontalBias, verticalBias);
}
-void ScrollView::TransformTo(const Vector3& position, float duration,
+void ScrollView::TransformTo(const Vector3& position, float duration, AlphaFunction alpha,
DirectionBias horizontalBias, DirectionBias verticalBias)
{
Actor self( Self() );
mScrollStartedSignalV2.Emit( currentScrollPosition );
bool animating = AnimateTo(-position,
Vector3::ONE * duration,
- mSnapAlphaFunction,
+ alpha,
true,
horizontalBias,
verticalBias,
ScrollTo(position, duration, DirectionBiasNone, DirectionBiasNone);
}
+void ScrollView::ScrollTo(const Vector3& position, float duration, AlphaFunction alpha)
+{
+ ScrollTo(position, duration, alpha, DirectionBiasNone, DirectionBiasNone);
+}
+
void ScrollView::ScrollTo(const Vector3& position, float duration,
DirectionBias horizontalBias, DirectionBias verticalBias)
{
- DALI_LOG_SCROLL_STATE("[0x%X] position[%.2f, %.2f] duration[%.2f]",
- this, position.x, position.y, duration, int(horizontalBias), int(verticalBias));
+ ScrollTo(position, duration, mSnapAlphaFunction, horizontalBias, verticalBias);
+}
- TransformTo(position, duration, horizontalBias, verticalBias);
+void ScrollView::ScrollTo(const Vector3& position, float duration, AlphaFunction alpha,
+ DirectionBias horizontalBias, DirectionBias verticalBias)
+{
+ DALI_LOG_SCROLL_STATE("[0x%X] position[%.2f, %.2f] duration[%.2f], bias[%d, %d]", this, position.x, position.y, duration, int(horizontalBias), int(verticalBias));
+ TransformTo(position, duration, alpha, horizontalBias, verticalBias);
}
void ScrollView::ScrollTo(unsigned int page)
}
}
}
- positionSnap += clampDelta;
+
+ if(IsScrollComponentEnabled(Toolkit::Scrollable::OvershootIndicator))
+ {
+ // Scroll to the end of the overshoot only when overshoot is enabled.
+ positionSnap += clampDelta;
+ }
bool animating = AnimateTo(positionSnap, positionDuration,
alphaFunction, false,
}
if( enabled )
{
- mMaxOvershoot = OVERSCROLL_CLAMP;
mOvershootIndicator->AttachToScrollable(*this);
}
else
// TODO: Upgrade to use a more powerful gesture detector (one that supports multiple touches on pan - so works as pan and flick gesture)
// BUG: Gesture::Finished doesn't always return velocity on release (due to
// timeDelta between last two events being 0 sometimes, or posiiton being the same)
-void ScrollView::OnPan(PanGesture gesture)
+void ScrollView::OnPan( const PanGesture& gesture )
{
// Guard against destruction during signal emission
// Note that Emit() methods are called indirectly e.g. from within ScrollView::OnGestureEx()