AbstractGraphElementNoCWR
touchgfx/widgets/graph/GraphElements.hpp
An abstract graph element. Declares a couple of useful functions to help subclasses which do not use CWR (CanvasWidget Renderer).
Inherits from: AbstractGraphElement, CanvasWidget, Widget, Drawable
Inherited by: AbstractGraphDecoration, GraphElementBoxes, GraphElementGridBase, GraphElementHistogram, GraphElementVerticalGapLine
Public Functions
| AbstractGraphElementNoCWR() | |
| virtual bool | drawCanvasWidget(const Rect & invalidatedArea) const |
| Draw canvas widget for the given invalidated area. | |
| virtual colortype | getColor() const |
| Gets the color of the graph element. | |
| virtual void | setColor(colortype newColor) |
| Sets the color of the graph element. | |
Protected Functions
| void | normalizeRect(Rect & r) const |
| Normalize rectangle by changing a rectangle with negative width or height to a rectangle with positive width or height at the correct position. | |
Protected Attributes
Additional inherited members
Public Functions inherited from AbstractGraphElement
| AbstractGraphElement() | |
| Default constructor. | |
| virtual void | invalidateGraphPointAt(int16_t index) =0 |
| Invalidate the point at the given index. | |
Protected Functions inherited from AbstractGraphElement
| FORCE_INLINE_FUNCTION int | convertToGraphScaleX(const AbstractDataGraph * graph, int value, int scale) const |
| Converts the value to the proper X scale of the graph. | |
| FORCE_INLINE_FUNCTION int | convertToGraphScaleY(const AbstractDataGraph * graph, int value, int scale) const |
| Converts the value to the proper Y scale of the graph. | |
| FORCE_INLINE_FUNCTION AbstractDataGraph * | getGraph() const |
| Gets a pointer to the the graph containing the GraphElement. | |
| FORCE_INLINE_FUNCTION int | getIndexToXAxis(const AbstractDataGraph * graph, const int valueScaled, const int labelScaled) const |
| Convert the given valueScaled (index) to x axis value. | |
| FORCE_INLINE_FUNCTION CWRUtil::Q5 | indexToScreenXQ5(const AbstractDataGraph * graph, int16_t index) const |
| Gets screen x coordinate for a specific data point added to the graph. | |
| FORCE_INLINE_FUNCTION CWRUtil::Q5 | indexToScreenYQ5(const AbstractDataGraph * graph, int16_t index) const |
| Gets screen y coordinate for a specific data point added to the graph. | |
| bool | isCenterInvisible(const AbstractDataGraph * graph, int16_t index) const |
| Query if the center of a given data point index is visible inside the graph area. | |
| Rect | rectAround(CWRUtil::Q5 xQ5, CWRUtil::Q5 yQ5, CWRUtil::Q5 diameterQ5) const |
| Find the screen rectangle around a given point with the specified diameter. | |
| Rect | rectFromQ5Coordinates(CWRUtil::Q5 screenXminQ5, CWRUtil::Q5 screenYminQ5, CWRUtil::Q5 screenXmaxQ5, CWRUtil::Q5 screenYmaxQ5) const |
| Find the screen rectangle containing the Q5 screen rectangle by rounding the coordinates up/down. | |
| FORCE_INLINE_FUNCTION CWRUtil::Q5 | roundQ5(CWRUtil::Q5 q5) const |
| Round the given CWRUtil::Q5 to the nearest integer and return it as a CWRUtil::Q5 instead of an integer. | |
| FORCE_INLINE_FUNCTION CWRUtil::Q5 | valueToScreenXQ5(const AbstractDataGraph * graph, int x) const |
| Gets graph screen x for x value. | |
| FORCE_INLINE_FUNCTION CWRUtil::Q5 | valueToScreenYQ5(const AbstractDataGraph * graph, int y) const |
| Gets graph screen y for y value. | |
| FORCE_INLINE_FUNCTION bool | xScreenRangeToIndexRange(const AbstractDataGraph * graph, int16_t xMin, int16_t xMax, int16_t & indexMin, int16_t & indexMax) const |
| Gets graph element range for screen x coordinate range. | |
Public Functions inherited from CanvasWidget
| CanvasWidget() | |
| virtual void | draw(const Rect & invalidatedArea) const |
| Draws the given invalidated area. | |
| virtual uint8_t | getAlpha() const |
| Gets the current alpha value of the widget. | |
| virtual Rect | getMinimalRect() const |
| Gets minimal rectangle containing the shape drawn by this widget. | |
| const AbstractPainter * | getPainter() const |
| Gets the current painter for the CanvasWidget. | |
| virtual Rect | getSolidRect() const |
| Gets the largest solid (non-transparent) rectangle. | |
| virtual void | invalidate() const |
| Invalidates the area covered by this CanvasWidget. | |
| virtual void | setAlpha(uint8_t newAlpha) |
| Sets the opacity (alpha value). | |
Protected Attributes inherited from CanvasWidget
| uint8_t | alpha |
| The Alpha for this CanvasWidget. | |
Public Functions inherited from Widget
| virtual void | getLastChild(int16_t , int16_t , Drawable ** last) |
| Since a Widget is only one Drawable, Widget::getLastChild simply yields itself as result, but only if the Widget isVisible and isTouchable. | |
Public Functions inherited from Drawable
| void | center() |
| Centers the Drawable inside its parent. | |
| void | centerX() |
| Center the Drawable horizontally inside its parent. | |
| void | centerY() |
| Center the Drawable vertically inside its parent. | |
| virtual void | childGeometryChanged() |
| 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 void | draw(const Rect & invalidatedArea) const =0 |
| Draw this drawable. | |
| Drawable() | |
| Initializes a new instance of the Drawable class. | |
| void | drawToDynamicBitmap(BitmapId id) |
| Render the Drawable object into a dynamic bitmap. | |
| void | expand(int margin =0) |
| Expands the Drawable to have the same size as its parent with a given margin around the edge. | |
| Rect | getAbsoluteRect() 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_t | getHeight() const |
| Gets the height of this Drawable. | |
| virtual void | getLastChild(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 Rect | getSolidRect() const =0 |
| Get (the largest possible) rectangle that is guaranteed to be solid (opaque). | |
| virtual Rect | getSolidRectAbsolute() |
| Helper function for obtaining the largest solid rect (as implemented by getSolidRect()) expressed in absolute coordinates. | |
| virtual void | getVisibleRect(Rect & rect) const |
| Function for finding the visible part of this drawable. | |
| int16_t | getWidth() const |
| Gets the width of this Drawable. | |
| int16_t | getX() const |
| Gets the x coordinate of this Drawable, relative to its parent. | |
| int16_t | getY() const |
| Gets the y coordinate of this Drawable, relative to its parent. | |
| virtual void | handleClickEvent(const ClickEvent & event) |
| Defines the event handler interface for ClickEvents. | |
| virtual void | handleDragEvent(const DragEvent & event) |
| Defines the event handler interface for DragEvents. | |
| virtual void | handleGestureEvent(const GestureEvent & event) |
| Defines the event handler interface for GestureEvents. | |
| virtual void | handleTickEvent() |
| Called periodically by the framework if the Drawable instance has subscribed to timer ticks. | |
| virtual void | invalidate() const |
| Tell the framework that this entire Drawable needs to be redrawn. | |
| virtual void | invalidateContent() const |
| Tell the framework that the contents of the Drawable needs to be redrawn. | |
| virtual void | invalidateRect(Rect & invalidatedArea) const |
| Request that a region of this drawable is redrawn. | |
| bool | isTouchable() const |
| Gets whether this Drawable receives touch events or not. | |
| bool | isVisible() const |
| Gets whether this Drawable is visible. | |
| virtual void | moveRelative(int16_t x, int16_t y) |
| Moves the drawable. | |
| virtual void | moveTo(int16_t x, int16_t y) |
| Moves the drawable. | |
| virtual void | setHeight(int16_t height) |
| Sets the height of this drawable. | |
| void | setPosition(const Drawable & drawable) |
| Sets the position of the Drawable to the same as the given Drawable. | |
| void | setPosition(int16_t x, int16_t y, int16_t width, int16_t height) |
| Sets the size and position of this Drawable, relative to its parent. | |
| void | setTouchable(bool touch) |
| Controls whether this Drawable receives touch events or not. | |
| void | setVisible(bool vis) |
| Controls whether this Drawable should be visible. | |
| virtual void | setWidth(int16_t width) |
| Sets the width of this drawable. | |
| void | setWidthHeight(const Bitmap & bitmap) |
| Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates). | |
| void | setWidthHeight(const Drawable & drawable) |
| Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates). | |
| void | setWidthHeight(const Rect & other) |
| Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates). | |
| void | setWidthHeight(int16_t width, int16_t height) |
| Sets the dimensions (width and height) of the Drawable without changing the x and y coordinates). | |
| virtual void | setX(int16_t x) |
| Sets the x coordinate of this Drawable, relative to its parent. | |
| void | setXY(const Drawable & drawable) |
| Sets the x and y coordinates of this Drawable. | |
| void | setXY(int16_t x, int16_t y) |
| Sets the x and y coordinates of this Drawable, relative to its parent. | |
| virtual void | setY(int16_t y) |
| Sets the y coordinate of this Drawable, relative to its parent. | |
| virtual void | translateRectToAbsolute(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. | |
| Rect | rect |
| The coordinates of this Drawable, relative to its parent. | |
| bool | touchable |
| True if this drawable should receive touch events. | |
| bool | visible |
| True if this drawable should be drawn. | |
Public Functions Documentation
AbstractGraphElementNoCWR
drawCanvasWidget
| virtual bool drawCanvasWidget | ( | const Rect & | invalidatedArea | ) | |
Draw canvas widget for the given invalidated area.
Similar to draw(), but might be invoked several times with increasingly smaller areas to due to memory constraints from the underlying CanvasWidgetRenderer.
Parameters:
| invalidatedArea | The invalidated area. |
Returns:
true if the widget was drawn properly, false if not.
See also:
Reimplements: touchgfx::CanvasWidget::drawCanvasWidget
Reimplemented by: touchgfx::GraphTitle::drawCanvasWidget
getColor
| virtual colortype getColor | ( | ) | const |
setColor
Protected Functions Documentation
normalizeRect
| void normalizeRect | ( | Rect & | r | ) | |
Normalize rectangle by changing a rectangle with negative width or height to a rectangle with positive width or height at the correct position.
Parameters:
| r | The rectangle. |
Protected Attributes Documentation
color
colortype color
The currently assigned color.