lecho.lib.hellocharts.computator

Class PreviewChartComputator

java.lang.Object

lecho.lib.hellocharts.computator.ChartComputator

lecho.lib.hellocharts.computator.PreviewChartComputator

public class PreviewChartComputator
extends ChartComputator

Version of ChartComputator for preview charts. It always uses maxViewport as visible viewport and currentViewport as preview area.

Field Summary

Fields inherited from class lecho.lib.hellocharts.computator.ChartComputator

chartHeight, chartWidth, contentRectMinusAllMargins, contentRectMinusAxesMargins, currentViewport, DEFAULT_MAXIMUM_ZOOM, maxContentRect, maxViewport, maxZoom, minViewportHeight, minViewportWidth, viewportChangeListener

Constructor Summary

Constructors

Constructor and Description
PreviewChartComputator()

Method Summary

Modifier and Type	Method and Description
float	computeRawX(float valueX) Translates chart value into raw pixel value.
float	computeRawY(float valueY) Translates chart value into raw pixel value.
void	constrainViewport(float left, float top, float right, float bottom) Checks if new viewport doesn't exceed max available viewport.
Viewport	getVisibleViewport() Returns viewport for visible part of chart, for most charts it is equal to current viewport.
void	setVisibleViewport(Viewport visibleViewport)

Methods inherited from class lecho.lib.hellocharts.computator.ChartComputator

computeRawDistanceX, computeRawDistanceY, computeScrollSurfaceSize, getChartHeight, getChartWidth, getContentRectMinusAllMargins, getContentRectMinusAxesMargins, getCurrentViewport, getMaximumViewport, getMaxZoom, getMinimumViewportHeight, getMinimumViewportWidth, insetContentRect, insetContentRectByInternalMargins, isWithinContentRect, rawPixelsToDataPoint, resetContentRect, setContentRect, setCurrentViewport, setCurrentViewport, setMaxViewport, setMaxViewport, setMaxZoom, setViewportChangeListener, setViewportTopLeft

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PreviewChartComputator

public PreviewChartComputator()

Method Detail

computeRawX

public float computeRawX(float valueX)

Description copied from class: ChartComputator

Translates chart value into raw pixel value. Returned value is absolute pixel X coordinate. If this method return 0 that means left most pixel of the screen.

Overrides:

computeRawX in class ChartComputator

computeRawY

public float computeRawY(float valueY)

Description copied from class: ChartComputator

Translates chart value into raw pixel value. Returned value is absolute pixel Y coordinate. If this method return 0 that means top most pixel of the screen.

Overrides:

computeRawY in class ChartComputator

getVisibleViewport

public Viewport getVisibleViewport()

Description copied from class: ChartComputator

Returns viewport for visible part of chart, for most charts it is equal to current viewport.

Overrides:

getVisibleViewport in class ChartComputator

Returns:

setVisibleViewport

public void setVisibleViewport(Viewport visibleViewport)

Overrides:

setVisibleViewport in class ChartComputator

constrainViewport

public void constrainViewport(float left,
                              float top,
                              float right,
                              float bottom)

Description copied from class: ChartComputator

Checks if new viewport doesn't exceed max available viewport.

Overrides:

constrainViewport in class ChartComputator