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ImageProgress

An image progress will show parts of an image as a progress indicator. The image can progress from the left, the right, the bottom or the top of the given area, and can visually be fixed with a larger and larger portion of the image showing, or it can be moved into view.

Inherits from: AbstractDirectionProgress, AbstractProgressIndicator, Container, Drawable

Public Functions

virtual boolgetAnchorAtZero() const
Gets the current anchor at zero setting.
virtual BitmapIdgetBitmap() const
Gets the bitmap id of the current image.
ImageProgress()
virtual voidsetAlpha(uint8_t newAlpha)
Sets the opacity (alpha value).
virtual voidsetAnchorAtZero(bool anchorAtZero)
Sets anchor at zero.
virtual voidsetBitmap(BitmapId bitmapId)
Sets the bitmap id to use for progress.
virtual voidsetProgressIndicatorPosition(int16_t x, int16_t y, int16_t width, int16_t height)
Sets the position and dimensions of the actual progress indicator relative to the background image.
virtual voidsetValue(int value)
Sets the current value in the range (min..max) set by setRange().

Protected Attributes

Containercontainer
The container for the image to allow for anchored images.
boolfixedPosition
true if the image should not move during progress
TiledImageimage
The image.

Additional inherited members

Public Types inherited from AbstractDirectionProgress

enumDirectionType { RIGHT, LEFT, DOWN, UP }
Values that represent directions.

Public Functions inherited from AbstractDirectionProgress

AbstractDirectionProgress()
virtual DirectionTypegetDirection() const
Gets the current direction for the progress indicator.
virtual voidsetDirection(DirectionType direction)
Sets a direction for the progress indicator.

Protected Attributes inherited from AbstractDirectionProgress

DirectionTypeprogressDirection
The progress direction.

Public Functions inherited from AbstractProgressIndicator

AbstractProgressIndicator()
Initializes a new instance of the AbstractProgressIndicator class with a default range 0-100.
virtual uint8_tgetAlpha() const
Gets the current alpha value of the widget.
virtual uint16_tgetProgress(uint16_t range =100) const
Gets the current progress based on the range set by setRange() and the value set by setValue().
virtual int16_tgetProgressIndicatorHeight() const
Gets progress indicator height.
virtual int16_tgetProgressIndicatorWidth() const
Gets progress indicator width.
virtual int16_tgetProgressIndicatorX() const
Gets progress indicator x coordinate.
virtual int16_tgetProgressIndicatorY() const
Gets progress indicator y coordinate.
virtual voidgetRange(int & min, int & max) const
Gets the range set by setRange().
virtual voidgetRange(int & min, int & max, uint16_t & steps) const
Gets the range set by setRange().
virtual voidgetRange(int & min, int & max, uint16_t & steps, uint16_t & minStep) const
Gets the range set by setRange().
virtual intgetValue() const
Gets the current value set by setValue().
virtual voidhandleTickEvent()
Called periodically by the framework if the Drawable instance has subscribed to timer ticks.
virtual voidinvalidateContent() const
Tell the framework that the contents of the Drawable needs to be redrawn.
virtual voidsetBackground(const Bitmap & bitmapBackground)
Sets the background image.
virtual voidsetEasingEquation(EasingEquation easingEquation)
Sets easing equation to be used in updateValue.
virtual voidsetRange(int min, int max, uint16_t steps =0, uint16_t minStep =0)
Sets the range for the progress indicator.
voidsetValueSetAction(GenericCallback< const AbstractProgressIndicator & > & callback)
Sets callback that will be triggered every time a new value is assigned to the progress indicator.
voidsetValueUpdatedAction(GenericCallback< const AbstractProgressIndicator & > & callback)
Sets callback that will be triggered when updateValue has finished animating to the final value.
virtual voidupdateValue(int value, uint16_t duration)
Update the current value in the range (min..max) set by setRange().

Protected Attributes inherited from AbstractProgressIndicator

intanimationDuration
Duration of the animation.
intanimationEndValue
The animation end value.
boolanimationRunning
Is the animation running.
intanimationStartValue
The animation start value.
intanimationStep
The current animation step.
Imagebackground
The background image.
intcurrentValue
The current value.
EasingEquationequation
The equation used in updateValue()
ContainerprogressIndicatorContainer
The container that holds the actual progress indicator.
intrangeMax
The range maximum.
intrangeMin
The range minimum.
uint16_trangeSteps
The range steps.
uint16_trangeStepsMin
The range steps minimum.
GenericCallback< const AbstractProgressIndicator & > *valueSetCallback
New value assigned Callback.
GenericCallback< const AbstractProgressIndicator & > *valueUpdatedCallback
Animation ended Callback.

Public Functions inherited from Container

virtual voidadd(Drawable & d)
Adds a Drawable instance as child to this Container.
Container()
virtual boolcontains(const Drawable & d)
Query if a given Drawable has been added directly to this Container.
virtual voiddraw(const Rect & invalidatedArea) const
Draw this drawable.
virtual voidforEachChild(GenericCallback< Drawable & > * function)
Executes the specified callback function for each child in the Container.
virtual Drawable *getFirstChild()
Obtain a pointer to the first child of this container.
virtual voidgetLastChild(int16_t x, int16_t y, Drawable ** last)
Gets the last child in the list of children in this Container.
virtual voidgetLastChildNear(int16_t x, int16_t y, Drawable * last, int16_t fingerAdjustmentX, int16_t * fingerAdjustmentY)
Works similar to getLastChild() but also considers the current set finger size in HAL.
virtual RectgetSolidRect() const
Get (the largest possible) rectangle that is guaranteed to be solid (opaque).
virtual voidinsert(Drawable * previous, Drawable & d)
Inserts a Drawable after a specific child node.
virtual voidinvalidateContent() const
Tell the framework that the contents of the Drawable needs to be redrawn.
virtual voidremove(Drawable & d)
Removes a Drawable from the container by removing it from the linked list of children.
virtual voidremoveAll()
Removes all children in the Container by resetting their parent and sibling pointers.
virtual voidunlink()
Removes all children by unlinking the first child.

Protected Functions inherited from Container

virtual RectgetContainedArea() const
Gets a rectangle describing the total area covered by the children of this container.
virtual voidmoveChildrenRelative(int16_t deltaX, int16_t deltaY)
Calls moveRelative on all children.

Protected Attributes inherited from Container

Drawable *firstChild
Pointer to the first child of this container. Subsequent children can be found through firstChild's nextSibling.

Public Functions inherited from Drawable

voidcenter()
Centers the Drawable inside its parent.
voidcenterX()
Center the Drawable horizontally inside its parent.
voidcenterY()
Center the Drawable vertically inside its parent.
virtual voidchildGeometryChanged()
This function can be called on parent nodes to signal that the size or position of one or more of its children has changed.
virtual voiddraw(const Rect & invalidatedArea) const =0
Draw this drawable.
Drawable()
Initializes a new instance of the Drawable class.
voiddrawToDynamicBitmap(BitmapId id)
Render the Drawable object into a dynamic bitmap.
voidexpand(int margin =0)
Expands the Drawable to have the same size as its parent with a given margin around the edge.
RectgetAbsoluteRect() const
Helper function for obtaining the rectangle this Drawable covers, expressed in absolute coordinates.
virtual Drawable *getFirstChild()
Function for obtaining the first child of this drawable if any.
int16_tgetHeight() const
Gets the height of this Drawable.
virtual voidgetLastChild(int16_t x, int16_t y, Drawable ** last) =0
Function for obtaining the the last child of this drawable that intersects with the specified point.
Drawable *getNextSibling()
Gets the next sibling node.
Drawable *getParent() const
Returns the parent node.
const Rect &getRect() const
Gets the rectangle this Drawable covers, in coordinates relative to its parent.
virtual RectgetSolidRect() const =0
Get (the largest possible) rectangle that is guaranteed to be solid (opaque).
virtual RectgetSolidRectAbsolute()
Helper function for obtaining the largest solid rect (as implemented by getSolidRect()) expressed in absolute coordinates.
virtual voidgetVisibleRect(Rect & rect) const
Function for finding the visible part of this drawable.
int16_tgetWidth() const
Gets the width of this Drawable.
int16_tgetX() const
Gets the x coordinate of this Drawable, relative to its parent.
int16_tgetY() const
Gets the y coordinate of this Drawable, relative to its parent.
virtual voidhandleClickEvent(const ClickEvent & event)
Defines the event handler interface for ClickEvents.
virtual voidhandleDragEvent(const DragEvent & event)
Defines the event handler interface for DragEvents.
virtual voidhandleGestureEvent(const GestureEvent & event)
Defines the event handler interface for GestureEvents.
virtual voidhandleTickEvent()
Called periodically by the framework if the Drawable instance has subscribed to timer ticks.
virtual voidinvalidate() const
Tell the framework that this entire Drawable needs to be redrawn.
virtual voidinvalidateContent() const
Tell the framework that the contents of the Drawable needs to be redrawn.
virtual voidinvalidateRect(Rect & invalidatedArea) const
Request that a region of this drawable is redrawn.
boolisTouchable() const
Gets whether this Drawable receives touch events or not.
boolisVisible() const
Gets whether this Drawable is visible.
virtual voidmoveRelative(int16_t x, int16_t y)
Moves the drawable.
virtual voidmoveTo(int16_t x, int16_t y)
Moves the drawable.
virtual voidsetHeight(int16_t height)
Sets the height of this drawable.
voidsetPosition(const Drawable & drawable)
Sets the position of the Drawable to the same as the given Drawable.
voidsetPosition(int16_t x, int16_t y, int16_t width, int16_t height)
Sets the size and position of this Drawable, relative to its parent.
voidsetTouchable(bool touch)
Controls whether this Drawable receives touch events or not.
voidsetVisible(bool vis)
Controls whether this Drawable should be visible.
virtual voidsetWidth(int16_t width)
Sets the width of this drawable.
voidsetWidthHeight(const Bitmap & bitmap)
Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).
voidsetWidthHeight(const Drawable & drawable)
Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).
voidsetWidthHeight(const Rect & other)
Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).
voidsetWidthHeight(int16_t width, int16_t height)
Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates).
virtual voidsetX(int16_t x)
Sets the x coordinate of this Drawable, relative to its parent.
voidsetXY(const Drawable & drawable)
Sets the x and y coordinates of this Drawable.
voidsetXY(int16_t x, int16_t y)
Sets the x and y coordinates of this Drawable, relative to its parent.
virtual voidsetY(int16_t y)
Sets the y coordinate of this Drawable, relative to its parent.
virtual voidtranslateRectToAbsolute(Rect & r) const
Helper function for converting a region of this Drawable to absolute coordinates.
virtual ~Drawable()
Finalizes an instance of the Drawable class.

Protected Attributes inherited from Drawable

Drawable *nextSibling
Pointer to the next Drawable.
Drawable *parent
Pointer to this drawable's parent.
Rectrect
The coordinates of this Drawable, relative to its parent.
booltouchable
True if this drawable should receive touch events.
boolvisible
True if this drawable should be drawn.

Public Functions Documentation

getAnchorAtZero

virtual bool getAnchorAtZero()const

Gets the current anchor at zero setting.

Returns:

true if the image is anchored at zero, false if it is anchored at current progress.

See also:

getBitmap

virtual BitmapId getBitmap()const

Gets the bitmap id of the current image.

Returns:

The image.

See also:

ImageProgress

setAlpha

virtual void setAlpha(uint8_tnewAlpha)

Sets the opacity (alpha value).

This can be used to fade it away by gradually decreasing the alpha value from 255 (solid) to 0 (invisible).

Parameters:
newAlphaThe new alpha value. 255=solid, 0=invisible.
Note

The user code must call invalidate() in order to update the display.

See also:

Reimplements: touchgfx::AbstractProgressIndicator::setAlpha

setAnchorAtZero

virtual void setAnchorAtZero(boolanchorAtZero)

Sets anchor at zero.

Setting anchor at zero will force the image will be placed so that it is not moved during progress, only more and more of the image will become visible. If the image is not anchored at zero, it will be anchored at the current progress and will appear to slide into view.

Parameters:
anchorAtZerotrue to anchor at zero, false to anchor at current progress.
See also:

setBitmap

virtual void setBitmap(BitmapIdbitmapId)

Sets the bitmap id to use for progress.

Please note that the bitmap is tiled which will allow smaller bitmaps to repeat on the display and save memory.

Parameters:
bitmapIdThe bitmap id.
See also:

setProgressIndicatorPosition

virtual void setProgressIndicatorPosition(int16_tx ,
int16_ty ,
int16_twidth ,
int16_theight
)

Sets the position and dimensions of the actual progress indicator relative to the background image.

Parameters:
xThe x coordinate.
yThe y coordinate.
widthThe width of the box progress indicator.
heightThe height of the box progress indicator.
See also:

Reimplements: touchgfx::AbstractProgressIndicator::setProgressIndicatorPosition

setValue

virtual void setValue(intvalue)

Sets the current value in the range (min..max) set by setRange().

Values lower than min are mapped to min, values higher than max are mapped to max. If a callback function has been set using setValueSetAction, that callback will be called (unless the new value is the same as the current value).

Parameters:
valueThe value.
Note

if value is equal to the current value, nothing happens, and the callback will not be called.

See also:

Reimplements: touchgfx::AbstractProgressIndicator::setValue

Protected Attributes Documentation

container

Container container

The container for the image to allow for anchored images.

fixedPosition

bool fixedPosition

true if the image should not move during progress

image

TiledImage image

The image.