public void GetTextExtentWithEmptyString()
{
IVwGraphicsWin32 vwGraphics = VwGraphicsWin32Class.Create();
Assert.IsNotNull(vwGraphics);
using (var gr = new GraphicsObjectFromImage())
{
const int areaWidth = 1000;
const int areaHeight = 1000;
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(0, String.Empty, out extentX, out extentY);
Assert.That(extentX == 0, "extentX should equal 0");
Assert.That(extentY > 0, "extentY should be greater than 0");
vwGraphics.PopClipRect();
vwGraphics.ReleaseDC();
gr.Graphics.ReleaseHdc();
}
}
/// <summary>
/// Get the starting location for drawing the text.
/// </summary>
/// <remarks>Only used with Mono</remarks>
private void GetLocationForText(Rectangle cellBounds, bool fRightToLeft,
IVwGraphicsWin32 vg, string text, out int x, out int y)
{
Debug.Assert(Platform.IsMono, "This method is only needed on Mono");
var contentBounds = cellBounds;
contentBounds.Height -= 2;
contentBounds.Width -= 2;
int dx0;
int dy0;
vg.GetTextExtent(text.Length, text, out dx0, out dy0);
if (fRightToLeft)
{
x = contentBounds.Right - (dx0 + 4);
}
else
{
x = contentBounds.Left + 4;
}
int dy = (contentBounds.Height - dy0) / 2;
if (dy > 0)
{
y = contentBounds.Top + dy;
}
else
{
y = contentBounds.Top;
}
}
/// <summary>
/// Get the starting location for drawing the text.
/// </summary>
private void GetLocationForText(Rectangle cellBounds, bool fRightToLeft,
IVwGraphicsWin32 vg, string text, out int x, out int y)
{
var contentBounds = cellBounds;
contentBounds.Height -= 2;
contentBounds.Width -= 2;
int dx0;
int dy0;
vg.GetTextExtent(text.Length, text, out dx0, out dy0);
if (fRightToLeft)
{
x = contentBounds.Right - (dx0 + 4);
}
else
{
x = contentBounds.Left + 4;
}
int dy = (contentBounds.Height - dy0) / 2;
if (dy > 0)
{
y = contentBounds.Top + dy;
}
else
{
y = contentBounds.Top;
}
}
protected void ProcessGetTextExtent(IEnumerable <string> arguments)
{
int cch = int.Parse(arguments.First());
arguments = arguments.Skip(1);
string rgch = arguments.First();
arguments = arguments.Skip(1);
int unusedX, unusedY;
m_vwGraphics32.GetTextExtent(cch, rgch, out unusedX, out unusedY);
}
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));
}
}
}
/// <summary>
/// Get the starting location for drawing the text.
/// </summary>
private void GetLocationForText(Rectangle cellBounds, bool fRightToLeft,
IVwGraphicsWin32 vg, string text, out int x, out int y)
{
var contentBounds = cellBounds;
contentBounds.Height -= 2;
contentBounds.Width -= 2;
int dx0;
int dy0;
vg.GetTextExtent(text.Length, text, out dx0, out dy0);
if (fRightToLeft)
{
x = contentBounds.Right - (dx0 + 4);
}
else
{
x = contentBounds.Left + 4;
}
int dy = (contentBounds.Height - dy0) / 2;
if (dy > 0)
y = contentBounds.Top + dy;
else
y = contentBounds.Top;
}
