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Copy pathMapControl.cs
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1505 lines (1374 loc) · 55.8 KB
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
using OSGeo.MapServer;
using System.Diagnostics;
using MapLibrary.Properties;
using System.Reflection;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Runtime.InteropServices;
namespace DMS.MapLibrary
{
/// <summary>
/// Event handler to sign that the cursor is moving.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="x">The x position in map coordinates.</param>
/// <param name="y">The y position in map coordinates.</param>
public delegate void CursorMoveEventHandler(object sender, double x, double y);
/// <summary>
/// User Control to render maps.
/// </summary>
public partial class MapControl : Control, IMapControl
{
// properties
private MapObjectHolder target;
public mapObj map;
private Image mapImage = null;
private InputModes inputMode;
private Rectangle dragRect;
private bool dragging;
private SolidBrush selectionBrush;
private Pen selectionPen;
private double a11, a13, a21, a23;
private int unitPrecision;
private string unitName;
private MS_UNITS mapunits;
private int gap;
private bool border;
private Pen borderPen;
private bool centerMarker;
private Pen centerMarkerPen;
private string drawMessage;
private bool forcePan = false;
private float magnify = 1;
private int mouseX, mouseY;
private GraphicsPath trackPoints;
private bool queryMode = false;
private bool drawQuery = false;
private bool enableRendering = true;
private long lastRenderTime = 0;
private NavigationHistory history = new NavigationHistory();
// public events
/// <summary>
/// The CursorMove event object.
/// </summary>
public event CursorMoveEventHandler CursorMove;
/// <summary>
/// The BeforeRefresh event object.
/// </summary>
public event EventHandler BeforeRefresh;
/// <summary>
/// The AfterRefresh event object.
/// </summary>
public event EventHandler AfterRefresh;
/// <summary>
/// Constructs a new MapControl object.
/// </summary>
public MapControl()
{
InitializeComponent();
InputMode = InputModes.Pan;
dragRect = new Rectangle(0,0,0,0);
dragging = false;
selectionBrush = new SolidBrush(Color.FromArgb(75, Color.Gray));
selectionPen = new Pen(Color.Black,1);
borderPen = new Pen(Color.Black, 1);
border = false;
centerMarkerPen = new Pen(Color.Blue, 1);
centerMarker = false;
drawMessage = "The map hasn't been initialised yet.";
gap = 10;
unitPrecision = 4;
unitName = "";
mapunits = MS_UNITS.MS_METERS;
a11 = a13 = a21 = a23 = 0;
this.SetStyle(ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint | ControlStyles.DoubleBuffer, true);
}
/// <summary>
/// Enum for The user editing modes (panning or zooming).
/// </summary>
public enum InputModes
{
/// <summary>
/// Panning
/// </summary>
Pan,
/// <summary>
/// Zooming in
/// </summary>
ZoomIn,
/// <summary>
/// Zooming out
/// </summary>
ZoomOut,
/// <summary>
/// Rectangle tracking
/// </summary>
TrackRectangle,
/// <summary>
/// Polygon tracking
/// </summary>
TrackPolygon,
/// <summary>
/// Line tracking
/// </summary>
TrackLine,
/// <summary>
/// Select Item
/// </summary>
Select
}
public bool EnableRendering
{
get
{
return enableRendering;
}
set
{
enableRendering = value;
RefreshView();
}
}
/// <summary>
/// The current user editing mode (panning or zooming).
/// </summary>
public InputModes InputMode
{
get { return inputMode; }
set
{
inputMode = value;
trackPoints = null;
if (!DesignMode)
{
switch (inputMode)
{
case InputModes.Pan:
this.Cursor = new Cursor(new MemoryStream(Resources.GrabberTool));
break;
case InputModes.ZoomIn:
this.Cursor = new Cursor(new MemoryStream(Resources.ZoomInTool));
break;
case InputModes.ZoomOut:
this.Cursor = new Cursor(new MemoryStream(Resources.ZoomOutTool));
break;
case InputModes.Select:
this.Cursor = new Cursor(new MemoryStream(Resources.SelectTool));
break;
case InputModes.TrackRectangle:
this.Cursor = new Cursor(new MemoryStream(Resources.SelectRectTool));
break;
case InputModes.TrackPolygon:
this.Cursor = new Cursor(new MemoryStream(Resources.SelectPolygonTool));
break;
default:
this.Cursor = Cursors.Default;
break;
}
}
}
}
/// <summary>
/// The sample feature border gap in pixels.
/// </summary>
public int Gap
{
get { return gap; }
set
{
gap = value;
}
}
/// <summary>
/// Gets the current map image object.
/// </summary>
public Image MapImage
{
get { return mapImage; }
}
/// <summary>
/// Gets the last rendering time of the map.
/// </summary>
public long LastRenderTime
{
get { return lastRenderTime; }
}
/// <summary>
/// Flag to enable the drawing of a single line border.
/// </summary>
public bool Border
{
get { return border; }
set
{
border = value;
this.RefreshView();
}
}
/// <summary>
/// Flag to enable the drawing of a center marker.
/// </summary>
public bool CenterMarker
{
get { return centerMarker; }
set
{
centerMarker = value;
this.RefreshView();
}
}
/// <summary>
/// Update the pixel-map transformation coefficients.
/// </summary>
private void UpdateTansformations()
{
// update the map to pixel transformation
if (this.Width > 2)
a11 = (map.extent.maxx - map.extent.minx) / this.Width;
else a11 = 0;
a13 = map.extent.minx;
if (this.Height > 2)
a21 = -a11;
else a21 = 0;
a23 = map.extent.maxy;
// update the pixel to map transformation
}
/// <summary>
/// Converts the X coordinate from pixel space to map coordinate space.
/// </summary>
/// <param name="x">Pixel coordinate.</param>
/// <returns>Map coordinate.</returns>
private double Pixel2MapX(double x)
{
return a11 * x + a13;
}
/// <summary>
/// Converts the Y coordinate from pixel space to map coordinate space.
/// </summary>
/// <param name="y">Pixel coordinate.</param>
/// <returns>Map coordinate.</returns>
private double Pixel2MapY(double y)
{
return a21 * y + a23;
}
/// <summary>
/// Converts the MapScript shape object to the GDI+ GraphicsPath.
/// </summary>
/// <param name="feature">The shapeObj to conver.</param>
/// <returns>The converted GraphicsPath object</returns>
public static GraphicsPath ShapeToGraphicsPath(shapeObj feature)
{
GraphicsPath path = new GraphicsPath();
path.Reset();
if (feature != null)
{
lineObj line;
pointObj point;
for (int i = 0; i < feature.numlines; i++)
{
path.StartFigure();
line = feature.get(i);
for (int j = 0; j < line.numpoints; j++)
{
point = line.get(j);
PointF[] pts = { new PointF((float)point.x, (float)point.y) };
path.AddLines(pts);
}
if (feature.type == (int)MS_SHAPE_TYPE.MS_SHAPE_POLYGON) path.CloseFigure();
}
}
return path;
}
/// <summary>
/// Converts the GDI+ GraphicsPath to the MapScript shape object.
/// </summary>
/// <param name="path">The GraphicsPath object to convert.</param>
/// <returns>The converted shapeObj</returns>
public shapeObj GraphicsPathToShape(GraphicsPath path)
{
shapeObj feature = null;
if (path != null)
{
using (GraphicsPathIterator myPathIterator = new GraphicsPathIterator(path))
{
int myStartIndex;
int myEndIndex;
bool myIsClosed;
// get the number of Subpaths.
int numSubpaths = myPathIterator.SubpathCount;
while (myPathIterator.NextSubpath(out myStartIndex, out myEndIndex, out myIsClosed) > 0)
{
lineObj line = new lineObj();
for (int i = myStartIndex; i <= myEndIndex; i++)
{
if (i == myStartIndex ||
(path.PathPoints[i].X != path.PathPoints[i - 1].X &&
path.PathPoints[i].Y != path.PathPoints[i - 1].Y))
line.add(new pointObj(Pixel2MapX(path.PathPoints[i].X), Pixel2MapY(path.PathPoints[i].Y), 0, 0));
}
if (feature == null)
{
if (myIsClosed && line.numpoints > 2)
feature = new shapeObj((int)MS_SHAPE_TYPE.MS_SHAPE_POLYGON);
else
feature = new shapeObj((int)MS_SHAPE_TYPE.MS_SHAPE_LINE);
}
if (line.numpoints >= 2)
feature.add(line);
}
}
}
return feature;
}
/// <summary>
/// Zooming the map by using the specified zoom factor
/// </summary>
/// <param name="zoomfactor">Zoom factor.</param>
public void ZoomOut(double zoomfactor)
{
if (map != null)
{
using (pointObj center = new pointObj(map.width / 2, map.height / 2, 0, 0))
{
map.zoomScale(zoomfactor * map.scaledenom, center, map.width, map.height, map.extent, null);
history.Add(new NavigationHistoryItem(map.extent));
RaiseZoomChanged();
}
this.RefreshView();
}
}
/// <summary>
/// Zooming the map to the specified extent.
/// </summary>
/// <param name="minx">The minx of the extent.</param>
/// <param name="miny">The miny of the extent.</param>
/// <param name="maxx">The maxx of the extent.</param>
/// <param name="maxy">The maxy of the extent.</param>
public void ZoomRectangle(double minx, double miny, double maxx, double maxy)
{
if (map != null && (maxx - minx) > 2 && (maxy-miny) > 2)
{
using (rectObj imgrect = new rectObj(minx, miny, maxx, maxy, 0))
{
// mapscript requires this hack
imgrect.miny = maxy;
imgrect.maxy = miny;
map.zoomRectangle(imgrect, map.width, map.height, map.extent, null);
history.Add(new NavigationHistoryItem(map.extent));
RaiseZoomChanged();
this.RefreshView();
return;
}
}
}
/// <summary>
/// Recenter the map to the specified pixel coordinate.
/// </summary>
/// <param name="imgX">X coordinate in the pixel space.</param>
/// <param name="imgY">Y coordinate in the pixel space.</param>
public void PanTo(int imgX, int imgY)
{
if (map != null)
{
using (pointObj imgpoint = new pointObj(imgX, imgY, 0, 0))
{
map.zoomPoint(1, imgpoint, map.width, map.height, map.extent, null);
history.Add(new NavigationHistoryItem(map.extent));
RaisePositionChanged();
}
this.RefreshView();
}
}
/// <summary>
/// Restore map the extent to the initial values.
/// </summary>
public void SetInitialExtent()
{
if (map != null)
{
history.First();
history.Current.Apply(map);
RaiseZoomChanged();
this.RefreshView();
}
}
public void SetNextExtent()
{
if (map != null && history.HasNext())
{
history.Next();
history.Current.Apply(map);
RaiseZoomChanged();
this.RefreshView();
}
}
public void SetPreviousExtent()
{
if (map != null && history.HasPrevious())
{
history.Previous();
history.Current.Apply(map);
RaiseZoomChanged();
this.RefreshView();
}
}
/// <summary>
/// Get inital extent values.
/// </summary>
public rectObj GetInitialExtent()
{
return history[0].GetExtent();
}
/// <summary>
/// Retrieve the actual zoom width in map coordinates.
/// </summary>
/// <returns>The actual zoom width in map coordinates</returns>
public double GetZoom()
{
if (map != null)
return map.extent.maxx - map.extent.minx;
return 0;
}
/// <summary>
/// Retrieve the current scale.
/// </summary>
/// <returns>The current scale.</returns>
public double GetScale()
{
if (map != null)
return map.scaledenom;
return 0;
}
/// <summary>
/// Get the current unit name.
/// </summary>
/// <returns>The current unit name.</returns>
public string GetUnitName()
{
return unitName;
}
/// <summary>
/// Get the current unit display unit.
/// </summary>
/// <returns>The current unit.</returns>
public MS_UNITS GetMapUnits()
{
return mapunits;
}
/// <summary>
/// Update the unit values according to the mapObj settings.
/// </summary>
public void UpdateUnitValues()
{
mapunits = map.units;
unitPrecision = MapUtils.GetUnitPrecision(map.units);
string newUnit = MapUtils.GetUnitName(mapunits);
if (unitName != newUnit)
{
unitName = newUnit;
RaiseZoomChanged();
}
}
/// <summary>
/// Fires a zoomchanged event
/// </summary>
private void RaiseZoomChanged()
{
double zoom = (map.extent.maxx - map.extent.minx);
if (mapunits != map.units)
zoom = zoom * MapUtils.InchesPerUnit(map.units) / MapUtils.InchesPerUnit(mapunits);
target.RaiseZoomChanged(this, Math.Round(zoom, MapUtils.GetUnitPrecision(mapunits)), map.scaledenom);
}
/// <summary>
/// Fires a positionchanged event
/// </summary>
private void RaisePositionChanged()
{
target.RaisePositionChanged(this, Math.Round((map.extent.maxx + map.extent.minx) / 2, MapUtils.GetUnitPrecision(mapunits)), Math.Round((map.extent.maxy + map.extent.miny) / 2, MapUtils.GetUnitPrecision(mapunits)));
}
/// <summary>
/// Setting up the selection the drawing modes
/// </summary>
/// <param name="bQuery">The desired mode</param>
private void SetSelectionMode(bool bQuery)
{
if (bQuery)
{
drawQuery = true;
queryMode = false;
for (int i = 0; i < map.numlayers; i++)
{
layerObj layer = map.getLayer(i);
if (layer.status != mapscript.MS_OFF)
{
using (resultCacheObj results = layer.getResults())
{
if (results != null && results.numresults > 0)
{
queryMode = true;
// suppress the query drawing for the unsupported types
if (layer.type != MS_LAYER_TYPE.MS_LAYER_POINT &&
layer.type != MS_LAYER_TYPE.MS_LAYER_POLYGON &&
layer.type != MS_LAYER_TYPE.MS_LAYER_LINE &&
layer.type != MS_LAYER_TYPE.MS_LAYER_ANNOTATION &&
layer.type != MS_LAYER_TYPE.MS_LAYER_RASTER)
drawQuery = false;
}
}
}
}
if (!queryMode)
drawQuery = false;
}
else
{
if (queryMode || drawQuery)
{
queryMode = false;
drawQuery = false;
ClearResults();
this.target.RaiseSelectionChanged(this);
this.RefreshView();
}
}
}
/// <summary>
/// Draw the map.
/// </summary>
/// <param name="pe">The argument containing the drawing context to use.</param>
protected override void OnPaint(PaintEventArgs pe)
{
if (mapImage != null)
{
if (dragging)
{
if (inputMode == InputModes.Pan || forcePan)
{
float offsetX = (magnify - 1) * mouseX - magnify * dragRect.Width;
float offsetY = (magnify - 1) * mouseY - magnify * dragRect.Height;
pe.Graphics.DrawImage(mapImage, -offsetX, -offsetY, magnify * mapImage.Width, magnify * mapImage.Height);
}
else if (inputMode == InputModes.ZoomIn || inputMode == InputModes.ZoomOut || inputMode == InputModes.TrackRectangle)
{
// drawing the map image
pe.Graphics.DrawImage(mapImage, 0, 0);
// drawing the rectangle
Rectangle normalizedRectangle =
new Rectangle(
Math.Min(dragRect.X, dragRect.X + dragRect.Width),
Math.Min(dragRect.Y, dragRect.Y + dragRect.Height),
Math.Abs(dragRect.Width),
Math.Abs(dragRect.Height));
pe.Graphics.FillRectangle(selectionBrush, normalizedRectangle);
pe.Graphics.DrawRectangle(selectionPen, normalizedRectangle);
}
}
else
{
float offsetX = (magnify - 1) * mouseX;
float offsetY = (magnify - 1) * mouseY;
// drawing the map image
pe.Graphics.DrawImage(mapImage, -offsetX, -offsetY, magnify * mapImage.Width, magnify * mapImage.Height);
if (inputMode == InputModes.TrackPolygon || inputMode == InputModes.TrackLine)
{
if (trackPoints != null && trackPoints.PointCount >= 2)
{
if (inputMode == InputModes.TrackPolygon)
pe.Graphics.FillPath(selectionBrush, trackPoints);
pe.Graphics.DrawPath(selectionPen, trackPoints);
}
}
}
}
if (drawMessage != null)
{
using (Font font1 = new Font("Arial", 12, FontStyle.Bold, GraphicsUnit.Point))
{
RectangleF rectF1 = new RectangleF(0, 0, this.Width, this.Height);
pe.Graphics.DrawString(drawMessage, font1, Brushes.Blue, rectF1);
}
}
if (border)
{
// implement additional drawing if needed
pe.Graphics.DrawRectangle(borderPen, new Rectangle(0,0, this.Width-1, this.Height-1));
}
if (centerMarker)
{
float centerX = ((float)this.Width - 1) / 2;
float centerY = ((float)this.Height - 1) / 2;
pe.Graphics.DrawLine(centerMarkerPen, centerX - 10, centerY, centerX + 10, centerY);
pe.Graphics.DrawLine(centerMarkerPen, centerX, centerY - 10, centerX, centerY + 10);
}
}
/// <summary>
/// Adding a preview feature to the layer according to the layer type. This method is used to initialize the preview controls.
/// </summary>
/// <param name="srcLayer">The source layer the felature should be created in.</param>
/// <param name="numvalues">The number of the feature attributes to be created.</param>
private void AddSampleFeature(layerObj srcLayer, int numvalues)
{
if (srcLayer.type == MS_LAYER_TYPE.MS_LAYER_LINE)
{
using (shapeObj shape = new shapeObj((int)MS_SHAPE_TYPE.MS_SHAPE_LINE))
{
// adding a horizontal line sample
using (lineObj line = new lineObj())
{
using (pointObj point = new pointObj(this.gap, this.Height / 2, 0, 0))
{
line.add(point);
point.setXY(this.Width - this.gap, this.Height / 2, 0);
line.add(point);
}
shape.add(line);
}
if (numvalues > 0)
shape.initValues(numvalues);
srcLayer.addFeature(shape);
}
}
else if (srcLayer.type == MS_LAYER_TYPE.MS_LAYER_POLYGON)
{
using (shapeObj shape = new shapeObj((int)MS_SHAPE_TYPE.MS_SHAPE_POLYGON))
{
// adding a rectangle sample
using (lineObj line = new lineObj())
{
using (pointObj point = new pointObj(this.gap, this.gap, 0, 0))
{
line.add(point);
point.setXY(this.Width - this.gap, this.gap, 0);
line.add(point);
point.setXY(this.Width - this.gap, this.Height - this.gap, 0);
line.add(point);
point.setXY(this.gap, this.Height - this.gap, 0);
line.add(point);
point.setXY(this.gap, this.gap, 0);
line.add(point);
}
shape.add(line);
}
if (numvalues > 0)
shape.initValues(numvalues);
srcLayer.addFeature(shape);
}
}
else
{
using (shapeObj shape = new shapeObj((int)MS_SHAPE_TYPE.MS_SHAPE_POINT))
{
// adding a point sample
using (lineObj line = new lineObj())
{
using (pointObj point = new pointObj(this.Width / 2, this.Height / 2, 0, 0))
{
line.add(point);
}
shape.add(line);
}
if (numvalues > 0)
shape.initValues(numvalues);
srcLayer.addFeature(shape);
}
}
}
/// <summary>
/// Create a default layer for creating a preview to another layer
/// </summary>
/// <param name="originalMap">The original map.</param>
/// <param name="originalLayer">The original layer.</param>
/// <returns>The created layer object.</returns>
private layerObj InitializeDefaultLayer(mapObj originalMap, layerObj originalLayer)
{
// create a new map object
map = new mapObj(null);
map.units = MS_UNITS.MS_PIXELS;
map.setExtent(0, 0, this.Width, this.Height);
map.width = this.Width;
map.height = this.Height;
outputFormatObj format = originalMap.outputformat;
if (map.getOutputFormatByName(format.name) == null)
map.appendOutputFormat(format);
map.selectOutputFormat(originalMap.imagetype);
// copy symbolset
for (int i = 1; i < originalMap.symbolset.numsymbols; i++)
{
symbolObj origsym = originalMap.symbolset.getSymbol(i);
map.symbolset.appendSymbol(MapUtils.CloneSymbol(origsym));
}
// copy the fontset
string key = null;
while ((key = originalMap.fontset.fonts.nextKey(key)) != null)
map.fontset.fonts.set(key, originalMap.fontset.fonts.get(key, ""));
// setting a default font
//map.fontset.fonts.set("",
// originalMap.fontset.fonts.get(originalMap.fontset.fonts.nextKey(null),""));
// insert a new layer
layerObj layer = new layerObj(map);
if (originalLayer != null)
{
// the chart type doesn't support having as single class in it
if (originalLayer.type == MS_LAYER_TYPE.MS_LAYER_CHART)
layer.type = MS_LAYER_TYPE.MS_LAYER_POLYGON;
else
layer.type = originalLayer.type;
originalLayer.open();
// add the sample feature to the layer
AddSampleFeature(layer, originalLayer.numitems);
if (originalLayer.getResults() == null)
originalLayer.close(); // close only is no query results
}
else
{
layer.type = MS_LAYER_TYPE.MS_LAYER_ANNOTATION;
// add the sample feature to the layer
AddSampleFeature(layer, 0);
}
layer.status = mapscript.MS_ON;
return layer;
}
/// <summary>
/// Creating a sample (preview) based on a classObj, styleObj or labelObj.
/// </summary>
/// <param name="original">The wrapper holding the original object.</param>
private void CreateSampleMap(MapObjectHolder original)
{
MapObjectHolder originalMap = null;
MapObjectHolder originalLayer = null;
MapObjectHolder originalClass = null;
// create a sample map to render a preview of the given object
if (original.GetType() == typeof(classObj))
{
// tracking down the whole object tree
originalLayer = original.GetParent();
if (originalLayer != null)
originalMap = originalLayer.GetParent();
// creating a new compatible map object
if (originalMap != null)
{
layerObj layer = InitializeDefaultLayer(originalMap, originalLayer);
layer.insertClass(((classObj)original).clone(), -1);
// bindings are not supported with sample maps
classObj classobj = layer.getClass(0);
for (int i = 0; i < classobj.numstyles; i++)
StyleBindingController.RemoveAllBindings(classobj.getStyle(i));
for (int i = 0; i < classobj.numlabels; i++)
LabelBindingController.RemoveAllBindings(classobj.getLabel(i));
classobj.setText("Sample text");
classobj.setExpression(""); // remove expression to have the class shown
this.target = new MapObjectHolder(classobj, original.GetParent());
}
}
else if (original.GetType() == typeof(styleObj))
{
// tracking down the whole object tree
if (original.GetParent().GetType() == typeof(labelObj))
originalClass = original.GetParent().GetParent();
else
originalClass = original.GetParent();
if (originalClass != null)
originalLayer = originalClass.GetParent();
if (originalLayer != null)
originalMap = originalLayer.GetParent();
// creating a new compatible map object
if (originalMap != null)
{
layerObj layer = InitializeDefaultLayer(originalMap, originalLayer);
classObj classobj = new classObj(layer);
classobj.name = MapUtils.GetClassName(layer);
styleObj style;
if (original.GetParent().GetType() == typeof(labelObj))
{
classobj.addLabel(new labelObj());
labelObj label = classobj.getLabel(classobj.numlabels - 1);
MapUtils.SetDefaultLabel(label, layer.map);
label.insertStyle(((styleObj)original).clone(), -1);
style = label.getStyle(0);
}
else
{
classobj.insertStyle(((styleObj)original).clone(), -1);
style = classobj.getStyle(0);
}
// bindings are not supported with sample maps
StyleBindingController.RemoveAllBindings(style);
classobj.setText("Sample text");
this.target = new MapObjectHolder(style, original.GetParent());
}
}
else if (original.GetType() == typeof(labelObj))
{
// tracking down the whole object tree
originalClass = original.GetParent();
if (originalClass != null)
{
if (originalClass.GetType() == typeof(classObj))
{
originalLayer = originalClass.GetParent();
if (originalLayer != null)
originalMap = originalLayer.GetParent();
}
else if (originalClass.GetType() == typeof(scalebarObj))
{
originalMap = originalClass.GetParent();
}
}
// creating a new compatible map object
if (originalMap != null)
{
layerObj layer = InitializeDefaultLayer(originalMap, originalLayer);
classObj classobj = new classObj(layer);
classobj.name = MapUtils.GetClassName(layer);
labelObj label = new labelObj();
if (originalClass.GetType() == typeof(classObj))
{
// copy settings
label.updateFromString(((labelObj)original).convertToString());
}
classobj.addLabel(label);
this.target = new MapObjectHolder(layer.getClass(0).getLabel(0), original.GetParent());
}
}
else
throw new Exception("Invalid target type: " + original.GetType());
}
#region IMapControl Members
/// <summary>
/// Refresh the controls according to the underlying object.
/// </summary>
public void RefreshView()
{
timerRefresh.Enabled = false;
if (!enableRendering)
{
drawMessage = "Rendering is disabled.";
this.Refresh();
return;
}
if (BeforeRefresh != null)
BeforeRefresh(this, null);
// setting up the size of the map image
mapImage = null;
if (map != null)
{
if (this.Height > 2 && this.Width > 2 &&
map.extent.maxx > map.extent.minx && map.extent.maxy > map.extent.miny)
{
if (map.width != this.Width || map.height != this.Height)
{
map.height = this.Height;
map.width = this.Width;
map.setExtent(map.extent.minx, map.extent.miny, map.extent.maxx, map.extent.maxy);
RaiseZoomChanged();
}
UpdateTansformations();
using (outputFormatObj format = map.outputformat)
{
string imageType = null;
if ((format.renderer != mapscript.MS_RENDER_WITH_AGG &&
format.renderer != mapscript.MS_RENDER_WITH_CAIRO_RASTER)
|| string.Compare(format.mimetype.Trim(), "image/vnd.wap.wbmp", true) == 0
|| string.Compare(format.mimetype.Trim(), "image/tiff", true) == 0)
{
// falling back to the png type in case of the esoteric types
imageType = map.imagetype;
map.selectOutputFormat("png");
drawMessage = "MapManager cannot display maps in the output format " + imageType + ", rendering with png instead.";
}
else
{
drawMessage = null;
}
Cursor cur = this.Cursor;
try
{
this.Cursor = Cursors.WaitCursor;
if (drawQuery)
{
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
using (imageObj image = map.drawQuery())
{
if (mapImage == null || mapImage.Width != image.width || mapImage.Height != image.height)
{
mapImage = new Bitmap(image.width, image.height, PixelFormat.Format32bppRgb);
}
Bitmap bitmap = (Bitmap)mapImage;
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, image.width, image.height), ImageLockMode.ReadWrite, PixelFormat.Format32bppRgb);
try
{
image.getRawPixels(bitmapData.Scan0);
}
finally
{
bitmap.UnlockBits(bitmapData);
}
//byte[] img = image.getBytes();
//using (MemoryStream ms = new MemoryStream(img))
//{
// mapImage = Image.FromStream(ms);
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