|
public Draw ( |
||
| bitmap | ||
| transform | Matrix | |
| clipRegion | ||
| Результат | void | |
// Create a bitmap file of the mapDisplay supplied at construction.
// If mapperForWorldFile is not null and real world coords are defined, also create a world file.
public void CreateBitmap(string fileName, RectangleF rect, ImageFormat imageFormat, float dpi, CoordinateMapper mapperForWorldFile)
{
float bitmapWidth, bitmapHeight; // size of the bitmap in pixels.
int pixelWidth, pixelHeight; // bitmapWidth/Height, rounded up to integer.
bitmapWidth = (rect.Width / 25.4F) * dpi;
bitmapHeight = (rect.Height / 25.4F) * dpi;
pixelWidth = (int)Math.Ceiling(bitmapWidth);
pixelHeight = (int)Math.Ceiling(bitmapHeight);
Bitmap bitmap = new Bitmap(pixelWidth, pixelHeight, PixelFormat.Format24bppRgb);
bitmap.SetResolution(dpi, dpi);
// Set the transform
Matrix transform = Geometry.CreateInvertedRectangleTransform(rect, new RectangleF(0, 0, bitmapWidth, bitmapHeight));
// And draw.
mapDisplay.Draw(bitmap, transform);
// JPEG and GIF have special code paths because the default Save method isn't
// really good enough.
if (imageFormat == ImageFormat.Jpeg)
{
BitmapUtil.SaveJpeg(bitmap, fileName, 80);
}
else if (imageFormat == ImageFormat.Gif)
{
BitmapUtil.SaveGif(bitmap, fileName);
}
else
{
bitmap.Save(fileName, imageFormat);
}
bitmap.Dispose();
if (mapperForWorldFile != null && mapperForWorldFile.HasRealWorldCoords)
{
string extension = Path.GetExtension(fileName);
string worldFileName = Path.ChangeExtension(fileName, WorldFileExtension(extension));
CreateWorldFile(worldFileName, rect, bitmapWidth, bitmapHeight, mapperForWorldFile);
}
}
// The core printing routine.
void DrawPage(IGraphicsTarget graphicsTarget, CoursePage page)
{
// Get the course view for the course we are printing.
CourseView courseView = CourseView.CreatePrintingCourseView(eventDB, page.courseDesignator);
// Get the correct purple color to print the course in.
short ocadId;
float purpleC, purpleM, purpleY, purpleK;
bool purpleOverprint;
FindPurple.GetPurpleColor(mapDisplay, appearance, out ocadId, out purpleC, out purpleM, out purpleY, out purpleK, out purpleOverprint);
// Create a course layout from the view.
CourseLayout layout = new CourseLayout();
layout.SetLayerColor(CourseLayer.Descriptions, NormalCourseAppearance.blackColorOcadId, NormalCourseAppearance.blackColorName, NormalCourseAppearance.blackColorC, NormalCourseAppearance.blackColorM, NormalCourseAppearance.blackColorY, NormalCourseAppearance.blackColorK, false);
layout.SetLayerColor(CourseLayer.MainCourse, ocadId, NormalCourseAppearance.courseColorName, purpleC, purpleM, purpleY, purpleK, purpleOverprint);
CourseFormatter.FormatCourseToLayout(symbolDB, courseView, appearance, layout, CourseLayer.MainCourse);
// Set the course layout into the map display
mapDisplay.SetCourse(layout);
mapDisplay.SetPrintArea(null);
// Set the transform, and the clip.
Matrix transform = Geometry.CreateInvertedRectangleTransform(page.mapRectangle, page.printRectangle);
PushRectangleClip(graphicsTarget, page.printRectangle);
graphicsTarget.PushTransform(transform);
// Determine the resolution in map coordinates.
Matrix inverseTransform = transform.Clone();
inverseTransform.Invert();
float minResolutionPage = 100F / 2400F; // Assume 2400 DPI as the base resolution, to get very accurate print.
float minResolutionMap = Geometry.TransformDistance(minResolutionPage, inverseTransform);
// And draw.
mapDisplay.Draw(graphicsTarget, page.mapRectangle, minResolutionMap);
graphicsTarget.PopTransform();
graphicsTarget.PopClip();
}
// The core printing routine. The origin of the graphics is the upper-left of the margins,
// and the printArea in the size to draw into (in hundreths of an inch).
protected override void DrawPage(IGraphicsTarget graphicsTarget, int pageNumber, SizeF printArea, float dpi)
{
CoursePage page = pages[pageNumber];
// Get the course view for the course we are printing.
CourseView courseView = CourseView.CreatePrintingCourseView(eventDB, page.courseDesignator);
// Get the correct purple color to print the course in.
short ocadId;
float purpleC, purpleM, purpleY, purpleK;
bool purpleOverprint;
FindPurple.GetPurpleColor(mapDisplay, appearance, out ocadId, out purpleC, out purpleM, out purpleY, out purpleK, out purpleOverprint);
// Create a course layout from the view.
CourseLayout layout = new CourseLayout();
layout.SetLayerColor(CourseLayer.Descriptions, NormalCourseAppearance.blackColorOcadId, NormalCourseAppearance.blackColorName, NormalCourseAppearance.blackColorC, NormalCourseAppearance.blackColorM, NormalCourseAppearance.blackColorY, NormalCourseAppearance.blackColorK, false);
layout.SetLayerColor(CourseLayer.MainCourse, ocadId, NormalCourseAppearance.courseColorName, purpleC, purpleM, purpleY, purpleK, purpleOverprint);
CourseFormatter.FormatCourseToLayout(symbolDB, courseView, appearance, layout, CourseLayer.MainCourse);
// Set the course layout into the map display
mapDisplay.SetCourse(layout);
this.mapDisplay.SetPrintArea(null);
// Collecting garbage should make out of memory less common.
GC.Collect();
if (graphicsTarget is GDIPlus_GraphicsTarget)
{
// We print to intermediate bands of bitmaps. This is the only way to get purple blending correct.
// Other code ensure that if purple blending is on, we always take this code path.
GDIPlus_GraphicsTarget gdiGraphicsTarget = ((GDIPlus_GraphicsTarget)graphicsTarget);
Graphics g = gdiGraphicsTarget.Graphics;
// Save and restore state so we can mess with stuff.
GraphicsState graphicsState = g.Save();
// Printing via a bitmap. Works best with some print drivers.
dpi = AdjustDpi(dpi);
const long MAX_PIXELS_PER_BAND = 20000000; // 20M pixels = 60M bytes (3 bytes per pixel).
List <CoursePage> bands = BandPageToLimitBitmapSize(page, dpi, MAX_PIXELS_PER_BAND);
// Create the bitmap. Can do this once because each band is the same size.
int bitmapWidth = (int)Math.Round(bands[0].printRectangle.Width * dpi / 100F);
int bitmapHeight = (int)Math.Round(bands[0].printRectangle.Height * dpi / 100F);
Bitmap bitmap = new Bitmap(bitmapWidth, bitmapHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
foreach (CoursePage band in bands)
{
// Set the transform
Matrix transform = Geometry.CreateInvertedRectangleTransform(band.mapRectangle, new RectangleF(0, 0, bitmapWidth, bitmapHeight));
mapDisplay.Draw(bitmap, transform);
try {
// Draw the bitmap on the printer.
g.DrawImage(bitmap, band.printRectangle);
}
catch (Exception) { }
}
// restore state.
g.Restore(graphicsState);
bitmap.Dispose();
}
else
{
// Print directly. Used only when prerasterization is off.
// Set the transform, and the clip.
Matrix transform = Geometry.CreateInvertedRectangleTransform(page.mapRectangle, page.printRectangle);
PushRectangleClip(graphicsTarget, page.printRectangle);
graphicsTarget.PushTransform(transform);
// Determine the resolution in map coordinates.
Matrix inverseTransform = transform.Clone();
inverseTransform.Invert();
float minResolutionPage = 100F / dpi;
float minResolutionMap = Geometry.TransformDistance(minResolutionPage, inverseTransform);
// And draw.
mapDisplay.Draw(graphicsTarget, page.mapRectangle, minResolutionMap);
graphicsTarget.PopTransform();
graphicsTarget.PopClip();
}
}
