protected void ProcessDrawText(IEnumerable <string> arguments)
{
try
{
int x = int.Parse(arguments.First());
arguments = arguments.Skip(1);
int y = int.Parse(arguments.First());
arguments = arguments.Skip(1);
int cch = int.Parse(arguments.First());
arguments = arguments.Skip(1);
string rgch = arguments.First();
arguments = arguments.Skip(1);
int stretch = int.Parse(arguments.First());
arguments = arguments.Skip(1);
m_vwGraphics32.DrawText(x, y, cch, rgch, stretch);
// all argument should be used up.
Debug.Assert(arguments.Count() == 0);
}
catch (Exception e)
{
Console.WriteLine("Warning could not parse line DrawText {0}", arguments.Aggregate((str, next) => (str + " " + next)));
}
}
/// <summary>
/// Draw the text using the FieldWorks IVwGraphicsWin32 interface.
/// </summary>
/// <remarks>Only used with Mono</remarks>
private void DrawFwText(Graphics graphics, Rectangle cellBounds,
string text, DataGridViewCellStyle cellStyle, FwTextBoxColumn col)
{
Debug.Assert(Platform.IsMono, "This method is only needed on Mono");
if (String.IsNullOrEmpty(text))
{
return;
}
IntPtr hdc = graphics.GetHdc();
IVwGraphicsWin32 vg = VwGraphicsWin32Class.Create(); // actually VwGraphicsCairo
try
{
vg.Initialize(hdc);
var renderProps = GetRenderProps(cellStyle, col);
vg.SetupGraphics(ref renderProps);
int x;
int y;
GetLocationForText(cellBounds, (col.TextBoxControl.RightToLeft == RightToLeft.Yes),
vg, text, out x, out y);
vg.PushClipRect(cellBounds);
vg.DrawText(x, y, text.Length, text, 0);
vg.PopClipRect();
}
finally
{
vg.ReleaseDC();
graphics.ReleaseHdc(hdc);
}
}
internal void TestGetTextExtentHelper(string testString)
{
IVwGraphicsWin32 vwGraphics = VwGraphicsWin32Class.Create();
Assert.IsNotNull(vwGraphics);
using (var gr = new GraphicsObjectFromImage())
{
const int areaWidth = 500;
const int areaHeight = 500;
// start with a White background.
using (var blueBrush = new SolidBrush(Color.White))
{
gr.Graphics.FillRectangle(blueBrush, new Rectangle(0, 0, areaWidth, areaHeight));
Assert.AreEqual(-1, SearchForBottomMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight), "Should all be white #1");
Assert.AreEqual(-1, SearchForRightMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight), "Should all be white #2");
vwGraphics.Initialize(gr.Graphics.GetHdc());
vwGraphics.PushClipRect(new Utils.Rect(0, 0, areaWidth, areaHeight));
vwGraphics.ForeColor = ConvertToVwGraphicsColor(Color.Black);
int extentX;
int extentY;
vwGraphics.GetTextExtent(testString.Length, testString, out extentX, out extentY);
Assert.That(extentX > 0, "extentX should be greater than 0");
Assert.That(extentY > 0, "extentY should be greater than 0");
vwGraphics.DrawText(0, 0, testString.Length, testString, 0);
vwGraphics.PopClipRect();
vwGraphics.ReleaseDC();
gr.Graphics.ReleaseHdc();
gr.Graphics.Flush();
Assert.That(SearchForBottomMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight) <= extentY, String.Format("Should be <= {0}", extentY));
Assert.That(SearchForRightMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight) <= extentX, String.Format("Should be <= {0}", extentX));
}
}
}
public void TextClipping()
{
const string longString = "abcdefghijklmnopqrstuvwzyzabcdefghijklmnopqrstuvwzyzabcdefghijklmnopqrstuvwzyz";
IVwGraphicsWin32 vwGraphics = VwGraphicsWin32Class.Create();
Assert.IsNotNull(vwGraphics);
using (var gr = new GraphicsObjectFromImage())
{
const int areaWidth = 500;
const int areaHeight = 500;
const int clipLeft = 300;
const int clipRight = 400;
// start with a White background.
using (var blueBrush = new SolidBrush(Color.White))
{
gr.Graphics.FillRectangle(blueBrush, new Rectangle(0, 0, areaWidth, areaHeight));
Assert.AreEqual(-1, SearchForBottomMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight), "Should all be white #1");
Assert.AreEqual(-1, SearchForRightMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight), "Should all be white #2");
vwGraphics.Initialize(gr.Graphics.GetHdc());
vwGraphics.PushClipRect(new Utils.Rect(clipLeft, 0, clipRight, areaHeight));
vwGraphics.ForeColor = ConvertToVwGraphicsColor(Color.Black);
vwGraphics.DrawText(0, 0, longString.Length, longString, 0);
vwGraphics.PopClipRect();
vwGraphics.ReleaseDC();
gr.Graphics.ReleaseHdc();
gr.Graphics.Flush();
Assert.That(SearchForLeftMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight) >= clipLeft, String.Format("Should be >= {0}", clipLeft));
Assert.That(SearchForRightMostNonWhitePixel(gr.Bitmap, areaWidth, areaHeight) <= clipRight, String.Format("Should be <= {0}", clipRight));
}
}
}
