jscicalc.ReadOnlyCalculatorApplet Interface Reference
This is an interface for CalculatorApplet that allows us to access only the functions of CalculatorApplet designed to read its state. More...
Public Member Functions | |
| DisplayPanel | displayPanel () |
| Designed so that CalculatorPanel and its subclasses can use the displayPanel object as required. | |
| int | displayHeight (int minSize) |
| Find the display height at minSize. | |
| int | buttonHeight (int minSize) |
| Find the button height at minSize. | |
| int | buttonWidth (int minSize) |
| Find the button width at minSize. | |
| int | strutSize (int minSize) |
| Find the strut size at minSize. | |
| int | displayHeight () |
| The height of the LCD display in pixels. | |
| int | buttonHeight () |
| The height of a standard button. | |
| int | buttonWidth () |
| The width of a standard button. | |
| int | strutSize () |
| If you look at the CalculatorPanel objects, you’ll see that the buttons are grouped. | |
| int | minSize () |
| If you look at the CalculatorPanel objects, you’ll see that there’s a minimum gap between most objects. | |
| float | buttonTextSize () |
| Get the size of text to use on buttons. | |
| float | entryTextSize () |
| Get the size of text to use on the EntryLabel object. | |
| float | displayTextSize () |
| Get the size of text to use on the DisplayPanel.This reports the size of text for calculator ‘output’. | |
| float | extraTextSize () |
| Get the size of small text to use on the DisplayPanel object. | |
| boolean | getOn () |
| Tells us if the calculator is switched on. | |
| boolean | getShift () |
| Tells us if the shift button is down. | |
| Parser | getParser () |
| The Parser class is the model that this class controls. | |
| OObject | getValue () |
| This is used internally, but it’s also useful if you want to use the calculator as part of something else. | |
| OObject | getMemory () |
| Get the value from memory. | |
| AngleType | getAngleType () |
| Find whether we’re working in degrees or radians. | |
| boolean | getStat () |
| We can emulate a STAT mode and this is how we find out if we’re doing so. | |
| int | getMode () |
| As you’d expect for something emulating a real calculator, we’d better have a mode button. | |
| Mean | statMean () |
| Calculate the mean value. | |
| Complex | statSumSquares () |
| Calculate sum of squares - used in standard deviation/variance calculations. | |
| StDev | statSampleStDev () |
| Calculate the sample standard deviation. | |
| PopStDev | statPopulationStDev () |
| Calculate the population standard deviation. | |
| javax.swing.JFrame | frame () |
| Another function whose purpose eludes me. | |
| Base | getBase () |
| We work in various bases. | |
| Notation | getNotation () |
| Get notation (scientific, polar, complex). | |
| java.awt.Insets | getFrameInsets () |
| Get the frame Insets. | |
| int | graphHeight () |
| Get height for Graph. | |
| int | getSizesSize () |
| Find the size of sizes. | |
| int | getMinSize () |
| Find the minimum size of CalculatorApplet.mSize. | |
Detailed Description
This is an interface for CalculatorApplet that allows us to access only the functions of CalculatorApplet designed to read its state.It’s rather like using a pointer to const class in C++ to restrict to const members, but Java doesn’t have const members.
- Version:
- Revision
- 1.8
Member Function Documentation
| DisplayPanel jscicalc.ReadOnlyCalculatorApplet.displayPanel | ( | ) |
Designed so that CalculatorPanel and its subclasses can use the displayPanel object as required.
- Returns:
- The displayPanel
Implemented in jscicalc.CalculatorApplet.
| int jscicalc.ReadOnlyCalculatorApplet.displayHeight | ( | int | minSize | ) |
Find the display height at minSize.
- Parameters:
-
minSize The minimum size used in the display
- Returns:
- The display height at minSize
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.DisplayPanel.setUp().
| int jscicalc.ReadOnlyCalculatorApplet.buttonHeight | ( | int | minSize | ) |
Find the button height at minSize.
- Parameters:
-
minSize The minimum size used in the display
- Returns:
- The button height at minSize
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.graph.AxisDialog.setSizes().
| int jscicalc.ReadOnlyCalculatorApplet.buttonWidth | ( | int | minSize | ) |
Find the button width at minSize.
- Parameters:
-
minSize The minimum size used in the display
- Returns:
- The button width at minSize
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.graph.AxisDialog.setSizes(), and jscicalc.DisplayPanel.setUp().
| int jscicalc.ReadOnlyCalculatorApplet.strutSize | ( | int | minSize | ) |
Find the strut size at minSize.
- Parameters:
-
minSize The minimum size used in the display
- Returns:
- The strut size at minSize
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.graph.AxisDialog.setSizes(), and jscicalc.DisplayPanel.setUp().
| int jscicalc.ReadOnlyCalculatorApplet.displayHeight | ( | ) |
The height of the LCD display in pixels.
Used so that the view can get this information.
- Returns:
- Desired height of DisplayPanel in pixels.
- See also:
- DisplayPanel
Implemented in jscicalc.CalculatorApplet.
| int jscicalc.ReadOnlyCalculatorApplet.buttonHeight | ( | ) |
The height of a standard button.
Used by CalculatorPanel objects.
- Returns:
- Desired height of a standard button.
- See also:
- CalculatorButton
Implemented in jscicalc.CalculatorApplet.
| int jscicalc.ReadOnlyCalculatorApplet.buttonWidth | ( | ) |
The width of a standard button.
Used by CalculatorPanel objects.
- Returns:
- Desired width of a standard button.
- See also:
- CalculatorButton
Implemented in jscicalc.CalculatorApplet.
| int jscicalc.ReadOnlyCalculatorApplet.strutSize | ( | ) |
If you look at the CalculatorPanel objects, you’ll see that the buttons are grouped.
This defines the width of the gap between groups. CalculatorApplet keep control of such things and this function reports them to CalculatorPanel objects when required.
- Returns:
- Desired size of button-group separation
- See also:
- CalculatorPanel
Implemented in jscicalc.CalculatorApplet.
| int jscicalc.ReadOnlyCalculatorApplet.minSize | ( | ) |
If you look at the CalculatorPanel objects, you’ll see that there’s a minimum gap between most objects.
CalculatorApplet keep control of such things and this function reports them to CalculatorPanel objects when required.
- Returns:
- Desired size of button-group separation
- See also:
- CalculatorPanel
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.graph.AxisDialog.setSizes(), jscicalc.DisplayPanel.setUp(), and jscicalc.EntryLabel.update().
| float jscicalc.ReadOnlyCalculatorApplet.buttonTextSize | ( | ) |
Get the size of text to use on buttons.
- Returns:
- Desired fontsize for buttons
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.graph.AxisDialog.setBounds(), and jscicalc.graph.AxisDialog.setSizes().
| float jscicalc.ReadOnlyCalculatorApplet.entryTextSize | ( | ) |
Get the size of text to use on the EntryLabel object.
This is the bit of the DisplayPanel object that’s responsible for showing the current expression.
- Returns:
- Desired fontsize for the EntryLabel object.
- See also:
- EntryLabel
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.EntryLabel.update().
| float jscicalc.ReadOnlyCalculatorApplet.displayTextSize | ( | ) |
Get the size of text to use on the DisplayPanel.This reports the size of text for calculator ‘output’.
- Returns:
- Desired fontsize for calculator display
- See also:
- DisplayPanel
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.DisplayLabel.setExpression().
| float jscicalc.ReadOnlyCalculatorApplet.extraTextSize | ( | ) |
Get the size of small text to use on the DisplayPanel object.
Small text is for things like “stat”, “radians”, “shift” and the like
- Returns:
- Desired fontsize for small text
- See also:
- DisplayPanel
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.DisplayPanel.setUp().
| boolean jscicalc.ReadOnlyCalculatorApplet.getOn | ( | ) |
Tells us if the calculator is switched on.
This is useful in view classes because only this class gets to control such information.
- Returns:
- true or false according as the calculator is on or off
Implemented in jscicalc.CalculatorApplet.
| boolean jscicalc.ReadOnlyCalculatorApplet.getShift | ( | ) |
Tells us if the shift button is down.
- Returns:
- true or false according as the shift button is down or up
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.ExtraPanel.paintComponent().
| Parser jscicalc.ReadOnlyCalculatorApplet.getParser | ( | ) |
The Parser class is the model that this class controls.
When required, for example, so that we can create a view of the current expression, we use this function to make the Parser object accessible. Ideally it would be final, but it’s convenient to allow CalculatorButton objects to modify the Parser object directly.
- Returns:
- The Parser object
Implemented in jscicalc.CalculatorApplet.
| OObject jscicalc.ReadOnlyCalculatorApplet.getValue | ( | ) |
This is used internally, but it’s also useful if you want to use the calculator as part of something else.
In fact, the calculator was really originally designed because I couldn’t find a calculator applet that emulated the statistical functions on a standard calculator. So it was really just a part of a bigger applet that made confidence intervals. This function was put in the calculator specifically to allow external access to the calculated value, which when it changed would be transferred to a JTextField on another part of the applet.
- Returns:
- The value, which should be a Double
- See also:
- Parser
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.DisplayLabel.setNewExpression().
| OObject jscicalc.ReadOnlyCalculatorApplet.getMemory | ( | ) |
Get the value from memory.
- Returns:
- The memory value, zero if nothing has been stored.
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.ExtraPanel.paintComponent().
| AngleType jscicalc.ReadOnlyCalculatorApplet.getAngleType | ( | ) |
Find whether we’re working in degrees or radians.
- Returns:
- AngleType.DEGREES or AngleType.RADIANS
- See also:
- AngleType
Trig
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.DisplayLabel.setNewExpression().
| boolean jscicalc.ReadOnlyCalculatorApplet.getStat | ( | ) |
We can emulate a STAT mode and this is how we find out if we’re doing so.
STAT mode switches off some memory functions. I know this isn’t necessary but I want this calculator to emulate some features of a real calculator. You can always put the memory buttons back in if you want.
- Returns:
- true for stat mode, false for normal mode.
- See also:
- CalculatorApplet.setStat( boolean )
Implemented in jscicalc.CalculatorApplet.
| int jscicalc.ReadOnlyCalculatorApplet.getMode | ( | ) |
As you’d expect for something emulating a real calculator, we’d better have a mode button.
This one uses integers rather than enumerated types and you get the current mode with this function.
- Returns:
- The mode (currently 1, 2 or 3 or maybe 4)
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.EntryLabel.update(), and jscicalc.DisplayLabel.update().
| Mean jscicalc.ReadOnlyCalculatorApplet.statMean | ( | ) |
Calculate the mean value.
- Returns:
- The mean value
- See also:
- Mean
Implemented in jscicalc.CalculatorApplet.
| Complex jscicalc.ReadOnlyCalculatorApplet.statSumSquares | ( | ) |
Calculate sum of squares - used in standard deviation/variance calculations.
- Returns:
- sum of squares of statistical memory values
Implemented in jscicalc.CalculatorApplet.
| StDev jscicalc.ReadOnlyCalculatorApplet.statSampleStDev | ( | ) |
Calculate the sample standard deviation.
- Returns:
- The sample standard deviation value
- See also:
- StDev
Implemented in jscicalc.CalculatorApplet.
| PopStDev jscicalc.ReadOnlyCalculatorApplet.statPopulationStDev | ( | ) |
Calculate the population standard deviation.
- Returns:
- The population standard deviation value
- See also:
- PopStDev
Implemented in jscicalc.CalculatorApplet.
| javax.swing.JFrame jscicalc.ReadOnlyCalculatorApplet.frame | ( | ) |
Another function whose purpose eludes me.
- Returns:
- The frame used to hold the calculator
Implemented in jscicalc.CalculatorApplet.
| Base jscicalc.ReadOnlyCalculatorApplet.getBase | ( | ) |
We work in various bases.
Although numbers are always stored as doubles (i.e. IEE double precision floating point binary representations) so that the Base is essentially just used for formatting and so mainly used by the view, we need to keep a record of base and this is a natural place to keep it, and the Parser object needs to know the base so that it parses numbers entered correctly.
- Returns:
- The base (default is Base.DECIMAL)
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.DisplayLabel.getBase().
| Notation jscicalc.ReadOnlyCalculatorApplet.getNotation | ( | ) |
Get notation (scientific, polar, complex).
- Returns:
- the notation.
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.ExtraPanel.paintComponent(), and jscicalc.DisplayLabel.setNewExpression().
| java.awt.Insets jscicalc.ReadOnlyCalculatorApplet.getFrameInsets | ( | ) |
Get the frame Insets.
- Returns:
- frame Insets
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.graph.AxisDialog.setSizes().
| int jscicalc.ReadOnlyCalculatorApplet.graphHeight | ( | ) |
| int jscicalc.ReadOnlyCalculatorApplet.getSizesSize | ( | ) |
Find the size of sizes.
- Returns:
- The size of sizes
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.EntryLabel.update().
| int jscicalc.ReadOnlyCalculatorApplet.getMinSize | ( | ) |
Find the minimum size of CalculatorApplet.mSize.
- Returns:
- the minimum size of CalculatorApplet.mSize
Implemented in jscicalc.CalculatorApplet.
Referenced by jscicalc.EntryLabel.update().
The documentation for this interface was generated from the following file:
