public frmBlockLine()
{
InitializeComponent();
Model model = model1.Model;
BlockLine blockLine = new BlockLine();
blockLine.Start.Location = new PointF(100, 100);
blockLine.End.Location = new PointF(200, 200);
model.Lines.Add(blockLine);
Shape shape = new Shape();
shape.Location = new PointF(320, 320);
shape.BorderColor = Color.Green;
model.Shapes.Add(shape);
Shape shape2 = new Shape();
shape2.Location = new PointF(20, 20);
shape2.BorderColor = Color.Blue;
model.Shapes.Add(shape2);
}
private void button1_Click_1(object sender, EventArgs e)
{
//取得测试数据
float rx = float.Parse(txtRX.Text);
float ry = float.Parse(txtRY.Text);
float sx = float.Parse(txtSX.Text);
float sy = float.Parse(txtSY.Text);
float ex = float.Parse(txtEX.Text);
float ey = float.Parse(txtEY.Text);
float itv = float.Parse(txtItv.Text);
//求解
Position_Point rp = new Position_Point(rx, ry);
Position_Point sp = new Position_Point(sx, sy);
Position_Point ep = new Position_Point(ex, ey);
IPositionSet ps = BlockLine.getBlockLine(rp, itv, sp, ep);
//作图
pictureBox1.Image = new Bitmap(pictureBox1.Width, pictureBox1.Height);
Graphics g = Graphics.FromImage(pictureBox1.Image);
g.Clear(Color.White);
//网格线
for (float x = rx - itv; x >= 0; x -= itv)
{
g.DrawLine(Pens.Black, x, 0, x, pictureBox1.Height);
}
for (float y = ry - itv; y >= 0; y -= itv)
{
g.DrawLine(Pens.Black, 0, y, pictureBox1.Width, y);
}
for (float x = rx; x < pictureBox1.Width; x += itv)
{
g.DrawLine(Pens.Black, x, 0, x, pictureBox1.Height);
}
for (float y = ry; y < pictureBox1.Width; y += itv)
{
g.DrawLine(Pens.Black, 0, y, pictureBox1.Width, y);
}
//经过的网格
ps.InitToTraverseSet();
while (ps.NextPosition())
{
IPosition p = ps.GetPosition();
float x = p.GetX();
float y = p.GetY();
g.FillRectangle(Brushes.Gray, x - itv / 2 + 1, y - itv / 2 + 1, itv - 1, itv - 1);
}
//起点和终点
g.FillEllipse(Brushes.Black, sx - 2, sy - 2, 4, 4);
g.FillEllipse(Brushes.Black, ex - 2, ey - 2, 4, 4);
g.DrawLine(Pens.Red, sx, sy, ex, ey);
}
bool IsEndOfLine(IBlock block, BlockLine line)
{
float startOfBlock = block.GetX();
float endOfBlock = block.GetX() + block.GetWidth();
float endOfLine = line.GetX() + line.GetWidth();
if ((block.GetX() + block.GetWidth() - line.GetX()) < 0)
{
return(true);
}
else
{
return(false);
}
}
public override void RenderElement(IRenderable element, Graphics graphics, Render render)
{
BlockLine line = element as BlockLine;
if (line.Points == null)
{
return;
}
if (line.Points.Count < 2)
{
return;
}
GraphicsPath path = line.GetBlockPath();
Pen pen = null;
if (line.CustomPen == null)
{
pen = new Pen(line.BorderColor, line.BorderWidth);
pen.DashStyle = line.BorderStyle;
//Check if winforms renderer and adjust color as required
pen.Color = render.AdjustColor(line.BorderColor, line.BorderWidth, line.Opacity);
}
else
{
pen = line.CustomPen;
}
//Can throw an out of memory exception in System.Drawing
try
{
graphics.SmoothingMode = line.SmoothingMode;
graphics.DrawPath(pen, path);
}
catch
{
}
}
public GroupFontLineHelper(BlockLine line, Block block)
{
_line = line;
_currentFont = CreateFont(block);
}
public BlockPage Process(BlockPage page)
{
GroupFontLineHelper groupFont = null;
BlockLine line = null;
IBlock last = null;
var result = new BlockPage();
foreach (var block in page.AllBlocks)
{
if (last != null)
{
if (IsEndOfWord(block) || IsEndOfLine(block, line))
{
last = null;
result.Add(line);
}
else
{
line.Text += block.GetText();
line.Width = block.GetX() + block.GetWidth() - line.GetX();
groupFont.MergeFont((Block)block);
}
}
if ((last == null))
{
var b = (Block)block;
string text = block.GetText();
line = new BlockLine()
{
Text = text,
X = block.GetX(),
H = block.GetH(),
Width = block.GetWidth(),
Height = block.GetHeight(),
HasBackColor = b.HasBackColor,
HasLargeSpace = false,
// might be inaccurate
FontFullName = b.FontFullName,
FontName = b.FontName,
FontSize = b.FontSize, // BE CAREFUL!
FontStyle = b.FontStyle
// now the settings are done in GroupFontLineHelper
};
// TODO: validar a entrada duas vezes
if (groupFont != null)
{
groupFont.Done();
}
groupFont = new GroupFontLineHelper(line, b);
if (line.Width <= 0 || line.Height <= 0)
{
PdfReaderException.AlwaysThrow("line.Width <= 0 || line.Height <= 0");
}
}
last = block;
}
if (groupFont != null)
{
groupFont.Done();
}
return(result);
}
public BlockPage Process(BlockPage page)
{
GroupFontLineHelper groupFont = null;
BlockLine line = null;
IBlock last = null;
string last_hidden = null;
var result = new BlockPage();
foreach (var block in page.AllBlocks)
{
if (block is BlockHidden)
{
var blockHidden = (BlockHidden)block;
if (last_hidden != null)
{
PdfReaderException.Warning("last_hidden != null: hidden text will be overwritten");
}
last_hidden = blockHidden.GetHiddenText();
continue;
}
if (last != null)
{
if (CheckSubfonts(line, (Block)block))
{
bool isBackspace = CheckBackspace(line, block);
float endofblock = block.GetX() + block.GetWidth();
float endofline = line.GetX() + line.GetWidth();
if (endofblock > endofline)
{
line.Width = block.GetX() + block.GetWidth() - line.GetX();
}
if (line.Width <= 0)
{
PdfReaderException.AlwaysThrow("line.Width <= 0");
}
// conside same line: update text and Width
// we dont add space character (should we?)
line.Text += block.GetText();
// gather statistics
statBackspace += (isBackspace) ? 1 : 0;
statSubfonts++;
// does not update 'last' variable!!
continue;
}
}
if ((last == null) || (CompareLine(block, last) != 0))
{
var b = (Block)block;
string text = block.GetText();
if (last_hidden != null)
{
text = last_hidden + text;
last_hidden = null;
}
line = new BlockLine()
{
Text = text,
X = block.GetX(),
H = block.GetH(),
Width = block.GetWidth(),
Height = block.GetHeight(),
HasBackColor = b.HasBackColor,
HasLargeSpace = false,
// might be inaccurate
FontFullName = b.FontFullName,
FontName = b.FontName,
FontSize = b.FontSize, // BE CAREFUL!
FontStyle = b.FontStyle
// now the settings are done in GroupFontLineHelper
};
// TODO: validar a entrada duas vezes
if (groupFont != null)
{
groupFont.Done();
}
groupFont = new GroupFontLineHelper(line, b);
if (line.Width <= 0 || line.Height <= 0)
{
PdfReaderException.AlwaysThrow("line.Width <= 0 || line.Height <= 0");
}
result.Add(line);
}
else
{
string separator = (ShouldAddSpace(last, block)) ? " " : "";
// same line: update text and Width
float startOfBlock = block.GetX();
float endOfBlock = block.GetX() + block.GetWidth();
float endOfLine = line.GetX() + line.GetWidth();
line.Text += separator + block.GetText();
line.Width = block.GetX() + block.GetWidth() - line.GetX();
if (line.Width <= 0)
{
PdfReaderException.AlwaysThrow("line.Width <= 0");
}
bool couldBeTable = ShouldAddLargeSpace(last, block);
if (couldBeTable)
{
line.HasLargeSpace = true;
}
// walking backwards
// very strict check: sometimes the start overlaps with the ending
//if (startOfBlock < endOfLine)
// throw new InvalidOperationException();
// soft check: end of block should never that low unless it is an overlap
if (endOfBlock < endOfLine)
{
PdfReaderException.AlwaysThrow("endOfBlock < endOfLine", new IBlock[] { last, block });
}
groupFont.MergeFont((Block)block);
}
last = block;
}
if (groupFont != null)
{
groupFont.Done();
}
return(result);
}
