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Interface CH.ifa.draw.framework.DrawingView

public interface interface DrawingView

extends ImageObserver, DrawingChangeListener

Observer
DrawingView observes drawing for changes via the DrawingListener interface.
State
DrawingView plays the role of the StateContext in the State pattern. Tool is the State.
Strategy
DrawingView is the StrategyContext in the Strategy pattern with regard to the UpdateStrategy.
DrawingView is the StrategyContext for the PointConstrainer.

See Also:

Drawing, Painter, Tool

add(Figure)

Adds a figure to the drawing.

addAll(Vector)

Adds a vector of figures to the drawing.

addToSelection(Figure)

Adds a figure to the current selection.

addToSelectionAll(Vector)

Adds a vector of figures to the current selection.

checkDamage()

Checks whether the drawing has some accumulated damage

clearSelection()

Clears the current selection.

createImage(int, int)

Creates an image with the given dimensions

drawAll(Graphics)

Draws the contents of the drawing view.

drawBackground(Graphics)

Draws the background.

drawDrawing(Graphics)

Draws the drawing.

drawHandles(Graphics)

Draws the currently active handles.

drawing()

Gets the drawing.

editor()

Gets the editor.

findHandle(int, int)

Finds a handle at the given coordinates.

freezeView()

Freezes the view by acquiring the drawing lock.

getBackground()

Gets the background color of the DrawingView

getConstrainer()

Gets the current grid setting.

getFigureSelection()

Gets the current selection as a FigureSelection.

getGraphics()

Gets a graphic to draw into

getMinimumSize()

Gets the minimum dimension of the drawing.

getPreferredSize()

Gets the preferred dimension of the drawing..

getSize()

Gets the size of the drawing.

lastClick()

Gets the position of the last click inside the view.

paint(Graphics)

Paints the drawing view.

remove(Figure)

Removes a figure from the drawing.

removeFromSelection(Figure)

Removes a figure from the selection.

repairDamage()

Repair the damaged area

selection()

Gets the currently selected figures.

selectionCount()

Gets the number of selected figures.

selectionElements()

Gets an enumeration over the currently selected figures.

selectionZOrdered()

Gets the currently selected figures in Z order.

setBackground(Color)

Gets the background color of the DrawingView

setConstrainer(PointConstrainer)

Sets the current point constrainer.

setCursor(Cursor)

Sets the cursor of the DrawingView

setDisplayUpdate(Painter)

Sets the current display update strategy.

setDrawing(Drawing)

Sets and installs another drawing in the view.

setEditor(DrawingEditor)

Sets the view's editor.

toggleSelection(Figure)

If a figure isn't selected it is added to the selection.

tool()

Gets the current tool.

unfreezeView()

Unfreezes the view by releasing the drawing lock.

 public abstract void setEditor(DrawingEditor editor)

Sets the view's editor.

 public abstract Tool tool()

Gets the current tool.

 public abstract Drawing drawing()

Gets the drawing.

 public abstract void setDrawing(Drawing d)

Sets and installs another drawing in the view.

 public abstract DrawingEditor editor()

Gets the editor.

 public abstract Figure add(Figure figure)

Adds a figure to the drawing.

Returns:

the added figure.

 public abstract Figure remove(Figure figure)

Removes a figure from the drawing.

Returns:

the removed figure

 public abstract void addAll(Vector figures)

Adds a vector of figures to the drawing.

 public abstract Dimension getSize()

Gets the size of the drawing.

 public abstract Dimension getMinimumSize()

Gets the minimum dimension of the drawing.

 public abstract Dimension getPreferredSize()

Gets the preferred dimension of the drawing..

 public abstract void setDisplayUpdate(Painter updateStrategy)

Sets the current display update strategy.

See Also:

UpdateStrategy

 public abstract Vector selection()

Gets the currently selected figures.

Returns:

a vector with the selected figures. The vector is a copy of the current selection.

 public abstract FigureEnumeration selectionElements()

Gets an enumeration over the currently selected figures.

 public abstract Vector selectionZOrdered()

Gets the currently selected figures in Z order.

Returns:

a vector with the selected figures. The vector is a copy of the current selection.

See Also:

selection

 public abstract int selectionCount()

Gets the number of selected figures.

 public abstract void addToSelection(Figure figure)

Adds a figure to the current selection.

 public abstract void addToSelectionAll(Vector figures)

Adds a vector of figures to the current selection.

 public abstract void removeFromSelection(Figure figure)

Removes a figure from the selection.

 public abstract void toggleSelection(Figure figure)

If a figure isn't selected it is added to the selection. Otherwise it is removed from the selection.

 public abstract void clearSelection()

Clears the current selection.

 public abstract FigureSelection getFigureSelection()

Gets the current selection as a FigureSelection. A FigureSelection can be cut, copied, pasted.

 public abstract Handle findHandle(int x,
                                   int y)

Finds a handle at the given coordinates.

Returns:

the hit handle, null if no handle is found.

 public abstract Point lastClick()

Gets the position of the last click inside the view.

 public abstract void setConstrainer(PointConstrainer p)

Sets the current point constrainer.

 public abstract PointConstrainer getConstrainer()

Gets the current grid setting.

 public abstract void checkDamage()

Checks whether the drawing has some accumulated damage

 public abstract void repairDamage()

Repair the damaged area

 public abstract void paint(Graphics g)

Paints the drawing view. The actual drawing is delegated to the current update strategy.

See Also:

Painter

 public abstract Image createImage(int width,
                                   int height)

Creates an image with the given dimensions

 public abstract Graphics getGraphics()

Gets a graphic to draw into

 public abstract Color getBackground()

Gets the background color of the DrawingView

 public abstract void setBackground(Color c)

Gets the background color of the DrawingView

 public abstract void drawAll(Graphics g)

Draws the contents of the drawing view. The view has three layers: background, drawing, handles. The layers are drawn in back to front order.

 public abstract void drawHandles(Graphics g)

Draws the currently active handles.

 public abstract void drawDrawing(Graphics g)

Draws the drawing.

 public abstract void drawBackground(Graphics g)

Draws the background. If a background pattern is set it is used to fill the background. Otherwise the background is filled in the background color.

 public abstract void setCursor(Cursor c)

Sets the cursor of the DrawingView

 public abstract void freezeView()

Freezes the view by acquiring the drawing lock.

See Also:

lock

 public abstract void unfreezeView()

Unfreezes the view by releasing the drawing lock.

See Also:

unlock

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