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/**
******************************************************************************
* This file is part of the TouchGFX 4.10.0 distribution.
*
* @attention
*
* Copyright (c) 2018 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#include <gui/custom_controls_screen/WheelSelector.hpp>
#include <touchgfx/Color.hpp>
#include <touchgfx/EasingEquations.hpp>
WheelSelector::WheelSelector() :
currentAnimationState(NO_ANIMATION),
elementSelectedAction(0),
textMoveEndedCallback(this, &WheelSelector::textMoveEndedHandler)
{
}
WheelSelector::~WheelSelector()
{
}
void WheelSelector::setup(int width, int height, int textXPosition, int textYPosition, TEXTS wheelText)
{
setWidth(width);
setHeight(height);
setTouchable(true);
selectedTextYPosition = textYPosition;
textContainer.setPosition(0, 0, getWidth(), getHeight());
add(textContainer);
text.setTypedText(TypedText(wheelText));
text.setXY(textXPosition, selectedTextYPosition);
text.setMoveAnimationEndedAction(textMoveEndedCallback);
textContainer.add(text);
spaceBetweenTextRows = text.getTypedText().getFont()->getMinimumTextHeight() * 2; // For blank lines between texts;
// Prepare textSelected (if colors are different)
// Position of textSelectedContainer (y coordinate) updated later in setTextColor()
textSelectedContainer.setPosition(textContainer.getX(), textContainer.getY(), textContainer.getWidth(), 0);
add(textSelectedContainer);
textSelectedBackground.setPosition(0, 0, textSelectedContainer.getWidth(), 0);
textSelectedContainer.add(textSelectedBackground);
textSelected.setTypedText(text.getTypedText());
// Position of textSelected updated later in setTextColor()
textSelected.setXY(text.getX(), text.getY());
textSelected.setMoveAnimationEndedAction(textMoveEndedCallback);
textSelectedContainer.add(textSelected);
// Hide selected text, shown when normal/selected colors differ, see setTextColor()
textSelectedContainer.setVisible(false);
topCutOff = selectedTextYPosition + (spaceBetweenTextRows / 2);
bottomCutOff = topCutOff - text.getHeight() - (spaceBetweenTextRows / 3);
reset();
}
void WheelSelector::setTextColor(int16_t normalColor, int16_t selectedColor, uint16_t selectedBackgroundColor, int selectedYOffset, int selectedHeight)
{
text.setColor(normalColor);
if (normalColor != selectedColor)
{
selectedAreaYOffset = selectedYOffset;
textSelectedBackground.setHeight(selectedHeight);
textSelectedBackground.setColor(selectedBackgroundColor);
textSelectedContainer.setY(textContainer.getY() + selectedAreaYOffset);
textSelectedContainer.setHeight(selectedHeight);
textSelected.setColor(selectedColor);
textSelected.setY(text.getY() - selectedAreaYOffset);
textSelectedContainer.setVisible(true);
}
else
{
textSelectedContainer.setVisible(false);
}
text.invalidate(); // This also overlaps with textSelected which is therefore also redrawn
}
void WheelSelector::handleDragEvent(const DragEvent& evt)
{
if (currentAnimationState == ANIMATING_DRAG)
{
moveText(text.getY() + evt.getDeltaY());
}
}
void WheelSelector::handleClickEvent(const ClickEvent& evt)
{
if (evt.getType() == ClickEvent::PRESSED)
{
if (currentAnimationState != NO_ANIMATION)
{
text.cancelMoveAnimation();
textSelected.cancelMoveAnimation();
}
currentAnimationState = ANIMATING_DRAG;
}
else if (evt.getType() == ClickEvent::RELEASED && currentAnimationState == ANIMATING_DRAG)
{
snap();
}
}
void WheelSelector::handleGestureEvent(const GestureEvent& evt)
{
if (evt.getType() == GestureEvent::SWIPE_VERTICAL)
{
currentAnimationState = ANIMATING_GESTURE;
int delta = evt.getVelocity() * 5;
int newYPosition = text.getY() + delta;
adjustForBoundries(newYPosition);
int distanceToMove = newYPosition - text.getY();
int distanceToMoveABS = (distanceToMove > 0) ? distanceToMove : -distanceToMove;
int duration = distanceToMoveABS / 10;
duration = (duration < 2) ? 2 : duration;
animateMoveText(newYPosition, duration, EasingEquations::cubicEaseOut);
}
}
void WheelSelector::snap()
{
int deltaUp = (spaceBetweenTextRows - (text.getY() - selectedTextYPosition)) % spaceBetweenTextRows;
// Invert % value for negative values
deltaUp = (deltaUp > 0) ? deltaUp : spaceBetweenTextRows + deltaUp;
int deltaDown = spaceBetweenTextRows - deltaUp;
if (deltaUp < deltaDown)
{
animateMoveText(text.getY() + deltaUp, 10, EasingEquations::backEaseInOut);
}
else
{
animateMoveText(text.getY() - deltaDown, 10, EasingEquations::backEaseInOut);
}
currentAnimationState = ANIMATING_SNAP;
}
int WheelSelector::getSelectedIndex()
{
return (selectedTextYPosition - text.getY()) / spaceBetweenTextRows;
}
void WheelSelector::setSelectedIndex(int index, int duration, EasingEquation equation)
{
int newYPosition = selectedTextYPosition - (spaceBetweenTextRows * index);
adjustForBoundries(newYPosition);
if (duration == 0)
{
moveText(newYPosition);
}
else
{
currentAnimationState = ANIMATING_GESTURE;
animateMoveText(newYPosition, duration, equation);
}
}
void WheelSelector::textMoveEndedHandler(const MoveAnimator<TextArea>& textArea)
{
if (currentAnimationState == ANIMATING_GESTURE)
{
if (!textArea.isRunning() && !textSelected.isRunning())
{
snap();
}
}
else if (currentAnimationState == ANIMATING_SNAP)
{
currentAnimationState = NO_ANIMATION;
if (elementSelectedAction && elementSelectedAction->isValid())
{
elementSelectedAction->execute(*this, getSelectedIndex());
}
}
else
{
currentAnimationState = NO_ANIMATION;
}
}
void WheelSelector::adjustForBoundries(int& newYValue)
{
if (newYValue > topCutOff)
{
newYValue = topCutOff;
}
else if (newYValue < bottomCutOff)
{
newYValue = bottomCutOff;
}
}
void WheelSelector::moveText(int newYPosition)
{
adjustForBoundries(newYPosition);
text.moveTo(text.getX(), newYPosition);
if (textSelectedContainer.isVisible())
{
textSelected.moveTo(text.getX(), newYPosition - selectedAreaYOffset);
}
}
void WheelSelector::animateMoveText(int newYPosition, int duration, EasingEquation equation)
{
text.startMoveAnimation(text.getX(), newYPosition, duration, EasingEquations::linearEaseNone, equation);
if (textSelectedContainer.isVisible())
{
textSelected.startMoveAnimation(text.getX(), newYPosition - selectedAreaYOffset, duration, EasingEquations::linearEaseNone, equation);
}
}
void WheelSelector::reset()
{
moveText(selectedTextYPosition);
}