protected virtual void DrawTextCenter(
Graphics g, string text, Font font, Rectangle rect, Color color
)
{
if (Root.Canvas.UseGdiPlus)
{
using (var brush = new SolidBrush(color)) {
var fmt = (StringFormat)StringFormat.GenericTypographic.Clone();
fmt.Alignment = StringAlignment.Center;
fmt.LineAlignment = StringAlignment.Center;
fmt.FormatFlags =
StringFormatFlags.NoWrap |
StringFormatFlags.NoClip;
g.DrawString(text, font, brush, rect, fmt);
}
}
else
{
//TextRenderer.DrawText(g, text, font, rect, color, GetBulletFormatFlags());
using (var f = (Font)font.Clone())
using (var renderer = new Gdi32TextRenderer(g, f)) {
renderer.BkMode = BkMode.TRANSPARENT;
//renderer.TextAlignMode = TextAlignModes.TA_CENTER | TextAlignModes.TA_TOP;
renderer.TextColor = color;
var size = renderer.MeasureText(text);
var left = rect.Left + (rect.Width - size.Width) / 2 + 1;
var top = rect.Top + (rect.Height - size.Height) / 2 + 1;
var width = size.Width;
var height = size.Height;
var r = new Rectangle(
left + Root.Canvas.AutoScrollPosition.X - Root.Left,
top + Root.Canvas.AutoScrollPosition.Y - Root.Top,
width,
height
);
renderer.DrawText(text, r);
}
}
}
// ------------------------------
// protected
// ------------------------------
// --- text ---
protected virtual void DrawText(
Graphics g, string text, Font font, Rectangle rect, Color color
)
{
if (Root.Canvas.UseGdiPlus)
{
using (var brush = new SolidBrush(color)) {
var fmt = new StringFormat(StringFormat.GenericTypographic);
fmt.FormatFlags =
StringFormatFlags.NoWrap |
StringFormatFlags.NoClip;
g.DrawString(text, font, brush, rect.Location, fmt);
}
}
else
{
using (var f = (Font)font.Clone())
using (var renderer = new Gdi32TextRenderer(g, f)) {
renderer.BkMode = BkMode.TRANSPARENT;
//renderer.TextAlignMode = TextAlignModes.TA_LEFT | TextAlignModes.TA_TOP;
renderer.TextColor = color;
var r = new Rectangle(
rect.Left + Root.Canvas.AutoScrollPosition.X - Root.Left,
rect.Top + Root.Canvas.AutoScrollPosition.Y - Root.Top,
rect.Width,
rect.Height
);
renderer.DrawText(text, r);
}
}
// for debug
//Console.WriteLine("DrawText: " + text);
//var trace = new System.Diagnostics.StackTrace();
//for (int StackLoop = 0; StackLoop < trace.FrameCount; ++StackLoop) {
// var frame = trace.GetFrame(StackLoop);
// var method = frame.GetMethod();
// Console.WriteLine(method.ToString());
//}
//Console.WriteLine("---");
}