Coverage Report - palmed.edit.TextArea

Classes in this Package	Line Coverage	Branch Coverage	Complexity
TextArea	0%	0%	1.35;1,35

1		/**
2		* Redistribution and use in source and binary forms, with or without
3		* modification, are permitted provided that the following conditions are
4		* met :
5		*
6		* . Redistributions of source code must retain the above copyright
7		* notice, this list of conditions and the following disclaimer.
8		*
9		* . Redistributions in binary form must reproduce the above copyright
10		* notice, this list of conditions and the following disclaimer in the
11		* documentation and/or other materials provided with the distribution.
12		*
13		* . The name of the author may not be used to endorse or promote products
14		* derived from this software without specific prior written permission.
15		*
16		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17		* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18		* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19		* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
20		* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21		* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22		* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
24		* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
25		* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26		* POSSIBILITY OF SUCH DAMAGE.
27		*
28		* $Id$
29		*/
30
31		package palmed.edit;
32
33		import javax.microedition.lcdui.Graphics;
34		import javax.microedition.lcdui.Item;
35		import palmed.edit.selection.ISelectionView;
36		import palmed.edit.util.Coordinate;
37		import palmed.edit.view.Viewport;
38		import palmed.ui.IComponent;
39
40		/**
41		* This class implements a text area component.
42		*
43		* @author Mathieu Champlon
44		* @version $Revision$ $Date$
45		*/
46		public final class TextArea implements IComponent, ISelectionView
47		{
48		/**
49		* The background color.
50		*/
51		private static final int BACKGROUND_COLOR = 0xFFFFFF;
52		/**
53		* The cursor color.
54		*/
55		private static final int CURSOR_COLOR = 0x000000;
56		/**
57		* The cursor width in pixels.
58		*/
59		private static final int CURSOR_WIDTH = 2;
60		/**
61		* Current view size in pixels.
62		*/
63		private int width_, height_;
64		/**
65		* The font to display the text.
66		*/
67		private IFont font_;
68		/**
69		* The current cursor position.
70		*/
71		private final Coordinate cursorPosition_;
72		/**
73		* The viewport.
74		*/
75		private final Viewport viewport_;
76
77		/**
78		* Create a text area component.
79		*
80		* @param viewport the viewport
81		*/
82		public TextArea( final Viewport viewport )
83	0	{
84	0	if( viewport == null )
85	0	throw new IllegalArgumentException( "parameter 'viewport' is null" );
86	0	viewport_ = viewport;
87	0	font_ = new MonospacedFont( "ProFontWindows_12" );
88	0	cursorPosition_ = new Coordinate();
89	0	}
90
91		/**
92		* {@inheritDoc}
93		*/
94		public void paint( final Graphics g )
95		{
96	0	paintBackground( g );
97	0	paintText( g );
98	0	paintCursor( g );
99	0	}
100
101		private void paintBackground( final Graphics g )
102		{
103	0	g.setColor( BACKGROUND_COLOR );
104	0	g.fillRect( 0, 0, width_, height_ );
105	0	}
106
107		private void paintText( final Graphics g )
108		{
109	0	final LineDrawer drawer = new LineDrawer( font_, width_ / font_.getWidth() + 1 );
110	0	for( int y = 0; y < height_ / font_.getHeight() + 1; ++y )
111		{
112	0	drawer.configure( g, y );
113	0	viewport_.accept( drawer, y );
114		}
115	0	}
116
117		private void paintCursor( final Graphics g )
118		{
119	0	g.setColor( CURSOR_COLOR );
120	0	g.fillRect( cursorPosition_.x_, cursorPosition_.y_, CURSOR_WIDTH, font_.getHeight() );
121	0	}
122
123		/**
124		* {@inheritDoc}
125		*/
126		public void resize( final int width, final int height )
127		{
128	0	width_ = width;
129	0	height_ = height;
130	0	viewport_.resize( getColumns(), getLines() );
131	0	}
132
133		/**
134		* {@inheritDoc}
135		*/
136		public int getLayout()
137		{
138	0	return Item.LAYOUT_EXPAND + Item.LAYOUT_VEXPAND;
139		}
140
141		/**
142		* {@inheritDoc}
143		*/
144		public int getWidth()
145		{
146	0	return width_;
147		}
148
149		/**
150		* {@inheritDoc}
151		*/
152		public int getHeight()
153		{
154	0	return height_;
155		}
156
157		/**
158		* {@inheritDoc}
159		*/
160		public boolean click( final int x, final int y )
161		{
162	0	viewport_.click( pixelToColumn( x ), pixelToLine( y ) );
163	0	return true;
164		}
165
166		/**
167		* {@inheritDoc}
168		*/
169		public void drag( final int x, final int y )
170		{
171	0	viewport_.drag( pixelToColumn( x ), pixelToLine( y ) );
172	0	}
173
174		/**
175		* {@inheritDoc}
176		*/
177		public void unclick( final int x, final int y )
178		{
179	0	}
180
181		/**
182		* {@inheritDoc}
183		*/
184		public void update( final Coordinate position )
185		{
186	0	cursorPosition_.x_ = columnToPixel( position.x_ );
187	0	cursorPosition_.y_ = lineToPixel( position.y_ );
188	0	}
189
190		private int pixelToColumn( final int x )
191		{
192	0	return (x + font_.getWidth() / 2) / font_.getWidth();
193		}
194
195		private int pixelToLine( final int y )
196		{
197	0	if( y == 0 )
198	0	return -1;
199	0	return y / font_.getHeight();
200		}
201
202		private int lineToPixel( final int line )
203		{
204	0	return line * font_.getHeight();
205		}
206
207		private int columnToPixel( final int column )
208		{
209	0	final int x = column * font_.getWidth() - 1;
210	0	if( x == -1 )
211	0	return 0;
212	0	return x;
213		}
214
215		/**
216		* Retrieve the number of lines.
217		*
218		* @return the number of lines
219		*/
220		public int getLines()
221		{
222	0	return height_ / font_.getHeight();
223		}
224
225		/**
226		* Retrieve the number of columns.
227		*
228		* @return the number of columns
229		*/
230		public int getColumns()
231		{
232	0	return width_ / font_.getWidth();
233		}
234
235		/**
236		* Change the font.
237		*
238		* @param name the font resource name
239		*/
240		public void setFont( final String name )
241		{
242	0	font_ = new MonospacedFont( name );
243	0	viewport_.resize( getColumns(), getLines() );
244	0	}
245		}