protected override void OnMouseWheel(MouseEventArgs e)
{
if (_mapTransform == null)
return;
var res = _mapTransform.UnitsPerPixel;
float factor;
if (e.Delta < 0)
factor = 1.2f;
else if (e.Delta > 0)
factor = 1 / 1.2f;
else
return;
var center = new PointF(picMap.Width * 0.5f, picMap.Height * 0.5f);
var point = new PointF(e.X, e.Y);
var dx = (center.X - point.X) * factor;
var dy = (center.Y - point.Y) * factor;
var newCenter = _mapTransform.MapToWorld(point.X + dx, point.Y + dy);
var transform = new MapTransform(newCenter, res * factor, picMap.Width, picMap.Height);
_mapTransform = transform;
RenderToBuffer();
base.OnMouseWheel(e);
}
protected override void OnMouseWheel(MouseEventArgs e)
{
if (_mapTransform == null)
return;
var res = _mapTransform.UnitsPerPixel;
float factor;
if (e.Delta < 0)
factor = 1.2f;
else if (e.Delta > 0)
factor = 1 / 1.2f;
else
return;
var center = new PointF(picMap.Width * 0.5f, picMap.Height * 0.5f);
var point = new PointF(e.X, e.Y);
var dx = (center.X - point.X) * factor;
var dy = (center.Y - point.Y) * factor;
var newCenter = _mapTransform.MapToWorld(point.X + dx, point.Y + dy);
var transform = new MapTransform(newCenter, res * factor, picMap.Width, picMap.Height);
_mapTransform = transform;
RenderToBuffer();
base.OnMouseWheel(e);
}
private void getSampleFileFromInternetToolStripMenuItem_Click(object sender, EventArgs e)
{
var path = Path.Combine(Path.GetTempPath(), "mapbox.haiti-terrain.mbtiles");
var req = WebRequest.Create("http://a.tiles.mapbox.com/mapbox/download/haiti-terrain.mbtiles");
var success = true;
try
{
Enabled = false;
var tmpFile = Path.GetTempFileName();
using (var response = req.GetResponse())
{
using (var streamWriter = new BinaryWriter(File.OpenWrite(tmpFile)))
{
using (var stream = response.GetResponseStream())
{
var buffer = new byte[4 * 8192];
while (true)
{
if (stream != null)
{
var read = stream.Read(buffer, 0, buffer.Length);
if (read <= 0)
{
break;
}
streamWriter.Write(buffer, 0, read);
}
}
}
}
}
_source = null;
File.Copy(tmpFile, path, true);
File.Delete(tmpFile);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
success = false;
}
finally
{
if (success)
{
_source = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var scale = (float)(1.1 * Math.Max(_source.Schema.Extent.Width / picMap.Width, _source.Schema.Extent.Height / picMap.Height));
_mapTransform = new MapTransform(
new PointF((float)_source.Schema.Extent.CenterX, (float)_source.Schema.Extent.CenterY),
scale, picMap.Width, picMap.Height);
RenderToBuffer();
}
Enabled = true;
}
}
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
if (_mapTransform == null) return;
if (picMap.Width == 0 || picMap.Height == 0) return;
_buffer = new Bitmap(picMap.Width, picMap.Height);
_mapTransform = new MapTransform(_mapTransform.Center, _mapTransform.UnitsPerPixel, picMap.Width, picMap.Height);
RenderToBuffer();
}
private void picMap_MouseClick(object sender, MouseEventArgs e)
{
if (_mapTransform == null)
{
return;
}
if (e.Button == MouseButtons.Left)
{
var pt = _mapTransform.MapToWorld(e.X, e.Y);
_mapTransform = new MapTransform(pt, _mapTransform.UnitsPerPixel, picMap.Width, picMap.Height);
RenderToBuffer();
}
}
protected override void OnLoad(EventArgs e)
{
/* http://a.tiles.mapbox.com/mapbox/download/haiti-terrain-grey.mbtiles */
var path = Path.Combine(Path.GetTempPath(), "mapbox.haiti-terrain-grey.mbtiles");
if (File.Exists(path))
{
_source = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var scale = (float)(1.1 * Math.Max(_source.Schema.Extent.Width / picMap.Width, _source.Schema.Extent.Height / picMap.Height));
_mapTransform = new MapTransform(
new PointF((float)_source.Schema.Extent.CenterX, (float)_source.Schema.Extent.CenterY),
scale, picMap.Width, picMap.Height);
RenderToBuffer();
}
base.OnLoad(e);
}
protected override void OnLoad(EventArgs e)
{
/* http://a.tiles.mapbox.com/mapbox/download/haiti-terrain-grey.mbtiles */
var path = Path.Combine(Path.GetTempPath(), "mapbox.haiti-terrain-grey.mbtiles");
if (File.Exists(path))
{
_source = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var scale = (float)(1.1 * Math.Max(_source.Schema.Extent.Width / picMap.Width, _source.Schema.Extent.Height / picMap.Height));
_mapTransform = new MapTransform(
new PointF((float)_source.Schema.Extent.CenterX, (float)_source.Schema.Extent.CenterY),
scale, picMap.Width, picMap.Height);
RenderToBuffer();
}
base.OnLoad(e);
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
using (var ofn = new OpenFileDialog())
{
ofn.Filter = @"MbTiles file|*.mbtiles";
ofn.FilterIndex = 0;
ofn.Multiselect = false;
ofn.CheckFileExists = true;
if (ofn.ShowDialog() == DialogResult.OK)
{
_source = new MbTilesTileSource(new SQLiteConnectionString(ofn.FileName, false));
var extent = _source.Schema.Extent;
var scale = (float)(1.1 * Math.Max(extent.Width / picMap.Width, extent.Height / picMap.Height));
_mapTransform = new MapTransform(
new PointF((float)extent.CenterX, (float)extent.CenterY),
scale, picMap.Width, picMap.Height);
RenderToBuffer();
}
}
}
protected override void OnResize(EventArgs e)
{
base.OnResize(e);
if (_mapTransform == null) return;
if (picMap.Width == 0 || picMap.Height == 0) return;
_buffer = new Bitmap(picMap.Width, picMap.Height);
_mapTransform = new MapTransform(_mapTransform.Center, _mapTransform.UnitsPerPixel, picMap.Width, picMap.Height);
RenderToBuffer();
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
using (var ofn = new OpenFileDialog())
{
ofn.Filter = @"MbTiles file|*.mbtiles";
ofn.FilterIndex = 0;
ofn.Multiselect = false;
ofn.CheckFileExists = true;
if (ofn.ShowDialog() == DialogResult.OK)
{
_source = new MbTilesTileSource(new SQLiteConnectionString(ofn.FileName, false));
var extent = _source.Extent;
var scale = (float)(1.1 * Math.Max(extent.Width / picMap.Width, extent.Height / picMap.Height));
_mapTransform = new MapTransform(
new PointF((float)extent.CenterX, (float)extent.CenterY),
scale, picMap.Width, picMap.Height);
RenderToBuffer();
}
}
}
private void getSampleFileFromInternetToolStripMenuItem_Click(object sender, EventArgs e)
{
var path = Path.Combine(Path.GetTempPath(), "mapbox.haiti-terrain.mbtiles");
var req = WebRequest.Create("http://a.tiles.mapbox.com/mapbox/download/haiti-terrain.mbtiles");
var success = true;
try
{
Enabled = false;
var tmpFile = Path.GetTempFileName();
using (var response = req.GetResponse())
{
using (var streamWriter = new BinaryWriter(File.OpenWrite(tmpFile)))
{
using (var stream = response.GetResponseStream())
{
var buffer = new byte[4 * 8192];
while (true)
{
var read = stream.Read(buffer, 0, buffer.Length);
if (read <= 0) break;
streamWriter.Write(buffer, 0, read);
}
}
}
}
_source = null;
File.Copy(tmpFile, path, true);
File.Delete(tmpFile);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
success = false;
}
finally
{
if (success)
{
_source = new MbTilesTileSource(new SQLiteConnectionString(path, false));
var scale = (float)(1.1 * Math.Max(_source.Schema.Extent.Width / picMap.Width, _source.Schema.Extent.Height / picMap.Height));
_mapTransform = new MapTransform(
new PointF((float)_source.Schema.Extent.CenterX, (float)_source.Schema.Extent.CenterY),
scale, picMap.Width, picMap.Height);
RenderToBuffer();
}
Enabled = true;
}
}
private void picMap_MouseClick(object sender, MouseEventArgs e)
{
if (_mapTransform == null) return;
if (e.Button == MouseButtons.Left)
{
var pt = _mapTransform.MapToWorld(e.X, e.Y);
_mapTransform = new MapTransform(pt, _mapTransform.UnitsPerPixel, picMap.Width, picMap.Height);
RenderToBuffer();
}
}