private void ApplyState(MgMapDisplayParameters state)
{
ApplyViewCenter(state.X, state.Y);
ApplyViewScale(state.Scale);
ApplyDisplaySize(state.Width, state.Height);
if (state.DPI.HasValue)
ApplyDPI(state.DPI.Value);
}
/// <summary>
/// Pushes the given state onto the map state stack. The map takes on the display parameters specified
/// in this given state.
/// </summary>
/// <param name="state"></param>
public void PushState(MgMapDisplayParameters state)
{
if (state == null)
throw new ArgumentNullException("state"); //NOXLATE
var oldState = GetCurrentState();
ApplyState(state);
_states.Push(new MgdMapStateTransition() { OldState = oldState, NewState = state });
}
private void ApplyState(MgMapDisplayParameters state)
{
ApplyViewCenter(state.X, state.Y);
ApplyViewScale(state.Scale);
ApplyDisplaySize(state.Width, state.Height);
if (state.DPI.HasValue)
{
ApplyDPI(state.DPI.Value);
}
}
private void printDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
MgMapViewerProvider provider = _viewer.GetProvider();
MgSelectionBase selection = _viewer.GetSelection();
MgMapBase map = _viewer.GetMap();
MgPoint pt = map.ViewCenter;
MgCoordinate coord = pt.Coordinate;
float leftMargin = e.MarginBounds.Left;
float topMargin = e.MarginBounds.Top;
float yPos = topMargin;
float pageHeight = e.MarginBounds.Height;
//Write title
var titleFont = new Font(FontFamily.GenericSansSerif, 18.0f, GraphicsUnit.Point);
var sizeTitle = e.Graphics.MeasureString(txtTitle.Text, titleFont);
e.Graphics.DrawString(txtTitle.Text, titleFont, Brushes.Black, new PointF(leftMargin, yPos));
yPos += (sizeTitle.Height * 1.1f);
var scaleFont = SystemFonts.CaptionFont;
var scaleStr = string.Format("{0} 1 : {1}", Strings.TextScale, _viewer.GetMap().ViewScale); //NOXLATE
var sizeScale = e.Graphics.MeasureString(scaleStr, scaleFont);
//Scale to fit within this page
var imgHeight = (int)(pageHeight - (sizeTitle.Height * 1.1f) - (sizeScale.Height * 1.1f));
var imgWidth = e.MarginBounds.Width;
using (var state = provider.CreateTransientState())
{
var tempState = new MgMapDisplayParameters(coord.X, coord.Y, map.ViewScale, imgWidth, imgHeight, (int)numDPI.Value);
state.PushState(tempState);
MgByteReader br = provider.RenderMap(selection, "PNG"); //NOXLATE
using (MgReadOnlyStream stream = new MgReadOnlyStream(br))
{
Image img = Image.FromStream(stream);
e.Graphics.DrawImage(img, leftMargin, yPos, imgWidth, imgHeight);
img.Dispose();
}
}
yPos += imgHeight;
//Render scale
if (chkScale.Checked)
{
e.Graphics.DrawString(scaleStr, scaleFont, Brushes.Black, new PointF(leftMargin, yPos));
}
e.HasMorePages = false;
}
/// <summary>
/// Pushes the given state onto the map state stack. The map takes on the display parameters specified
/// in this given state.
/// </summary>
/// <param name="state"></param>
public void PushState(MgMapDisplayParameters state)
{
if (state == null)
{
throw new ArgumentNullException("state"); //NOXLATE
}
var oldState = GetCurrentState();
ApplyState(state);
_states.Push(new MgdMapStateTransition()
{
OldState = oldState, NewState = state
});
}
private void printDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
MgMapViewerProvider provider = _viewer.GetProvider();
MgSelectionBase selection = _viewer.GetSelection();
MgMapBase map = _viewer.GetMap();
MgPoint pt = map.ViewCenter;
MgCoordinate coord = pt.Coordinate;
float leftMargin = e.MarginBounds.Left;
float topMargin = e.MarginBounds.Top;
float yPos = topMargin;
float pageHeight = e.MarginBounds.Height;
//Write title
var titleFont = new Font(FontFamily.GenericSansSerif, 18.0f, GraphicsUnit.Point);
var sizeTitle = e.Graphics.MeasureString(txtTitle.Text, titleFont);
e.Graphics.DrawString(txtTitle.Text, titleFont, Brushes.Black, new PointF(leftMargin, yPos));
yPos += (sizeTitle.Height * 1.1f);
var scaleFont = SystemFonts.CaptionFont;
var scaleStr = string.Format("{0} 1 : {1}", Strings.TextScale, _viewer.GetMap().ViewScale); //NOXLATE
var sizeScale = e.Graphics.MeasureString(scaleStr, scaleFont);
//Scale to fit within this page
var imgHeight = (int)(pageHeight - (sizeTitle.Height * 1.1f) - (sizeScale.Height * 1.1f));
var imgWidth = e.MarginBounds.Width;
using (var state = provider.CreateTransientState())
{
var tempState = new MgMapDisplayParameters(coord.X, coord.Y, map.ViewScale, imgWidth, imgHeight, (int)numDPI.Value);
state.PushState(tempState);
MgByteReader br = provider.RenderMap(selection, "PNG"); //NOXLATE
using (MgReadOnlyStream stream = new MgReadOnlyStream(br))
{
Image img = Image.FromStream(stream);
e.Graphics.DrawImage(img, leftMargin, yPos, imgWidth, imgHeight);
img.Dispose();
}
}
yPos += imgHeight;
//Render scale
if (chkScale.Checked)
e.Graphics.DrawString(scaleStr, scaleFont, Brushes.Black, new PointF(leftMargin, yPos));
e.HasMorePages = false;
}
private void btnRenderMap2_Click(object sender, EventArgs e)
{
//Note we're casting to mg-desktop specific subclasses as this is what mg-desktop rendering APIs expect
MgdMap map = (MgdMap)_viewer.GetMap();
MgdSelection selection = (MgdSelection)_viewer.GetSelection();
MgMapViewerProvider provider = _viewer.GetProvider();
MgdRenderingService renderSvc = (MgdRenderingService)provider.CreateService(MgServiceType.RenderingService);
MgPoint centerPt = map.ViewCenter;
MgCoordinate centerCoord = centerPt.Coordinate;
//MgdTransientMapState is a helper class which lets us apply transient state to a map, which is automatically
//undone on disposal. This is how we can render custom views of a map with specific display parameters without
//permanently changing the display parameters used by the map viewer
using (MgTransientMapState tempState = provider.CreateTransientState(map))
{
MgMapDisplayParameters state = new MgMapDisplayParameters(centerCoord.X, centerCoord.Y, 5000, 1024, 768, 96);
tempState.PushState(state);
MgByteReader br = renderSvc.RenderMap(map, selection, "PNG");
using (SaveFileDialog save = new SaveFileDialog())
{
save.Filter = "Portable Network Graphics (*.png)|*.png";
if (save.ShowDialog() == DialogResult.OK)
{
//MgReadOnlyStream is a stream adapter class that provides a .net stream
//interface to the MgByteReader, allowing MgByteReader objects to be used
//anywhere a System.IO.Stream is expected.
using (MgReadOnlyStream stream = new MgReadOnlyStream(br))
{
Image img = Image.FromStream(stream);
img.Save(save.FileName);
MessageBox.Show("Image saved to: " + save.FileName);
}
}
br.Dispose();
}
}
}
