public override void DrawText(char[] str, int startAt, int len, Rectangle logicalTextBox, int textAlignment)
{
#if DEBUG
dbugCounter.dbugDrawStringCount++;
#endif
var color = this.CurrentTextColor;
if (color.A == 255)
{
var clipRect = Rectangle.Intersect(logicalTextBox,
new Rectangle(currentClipRect.Left,
currentClipRect.Top,
currentClipRect.Width,
currentClipRect.Height));
clipRect.Offset(canvasOriginX, canvasOriginY);
MyWin32.SetRectRgn(hRgn,
clipRect.Left,
clipRect.Top,
clipRect.Right,
clipRect.Bottom);
MyWin32.SelectClipRgn(tempDc, hRgn);
unsafe
{
fixed(char *startAddr = &str[0])
{
NativeTextWin32.TextOutUnsafe(tempDc,
(int)logicalTextBox.X + canvasOriginX,
(int)logicalTextBox.Y + canvasOriginY,
(startAddr + startAt), len);
}
}
MyWin32.SelectClipRgn(tempDc, IntPtr.Zero);
#if DEBUG
//NativeTextWin32.dbugDrawTextOrigin(tempDc,
// logicalTextBox.X + canvasOriginX,
// logicalTextBox.Y + canvasOriginY);
#endif
}
else
{
//translucent / transparent text
InitHdc();
var intersectRect = Rectangle.Intersect(logicalTextBox,
new Rectangle(currentClipRect.Left,
currentClipRect.Top,
currentClipRect.Width,
currentClipRect.Height));
intersectRect.Offset(canvasOriginX, canvasOriginY);
MyWin32.SetRectRgn(hRgn,
intersectRect.Left,
intersectRect.Top,
intersectRect.Right,
intersectRect.Bottom);
MyWin32.SelectClipRgn(tempDc, hRgn);
unsafe
{
fixed(char *startAddr = &str[0])
{
NativeTextWin32.TextOutUnsafe(tempDc,
logicalTextBox.X + canvasOriginX,
logicalTextBox.Y + canvasOriginY,
(startAddr + startAt), len);
}
}
#if DEBUG
//NativeTextWin32.dbugDrawTextOrigin(tempDc,
// logicalTextBox.X + canvasOriginX,
// logicalTextBox.Y + canvasOriginY);
#endif
}
}
public override void DrawText(char[] str, int startAt, int len, Rectangle logicalTextBox, int textAlignment)
{
//this is the most common used function for text drawing
//return;
#if DEBUG
dbugDrawStringCount++;
#endif
var color = this.CurrentTextColor;
if (color.A == 255)
{
//1. find clip rect
var clipRect = Rectangle.Intersect(logicalTextBox,
new Rectangle(currentClipRect.Left,
currentClipRect.Top,
currentClipRect.Width,
currentClipRect.Height));
//2. offset to canvas origin
clipRect.Offset(canvasOriginX, canvasOriginY);
//3. set rect rgn
win32MemDc.SetClipRect(clipRect);
unsafe
{
fixed(char *startAddr = &str[0])
{
//4.
NativeTextWin32.TextOutUnsafe(originalHdc,
(int)logicalTextBox.X + canvasOriginX,
(int)logicalTextBox.Y + canvasOriginY,
(startAddr + startAt), len);
}
}
//5. clear rect rgn
win32MemDc.ClearClipRect();
#if DEBUG
//NativeTextWin32.dbugDrawTextOrigin(tempDc,
// logicalTextBox.X + canvasOriginX,
// logicalTextBox.Y + canvasOriginY);
#endif
}
else
{
//-------------------------------------------
//not support translucent text in this version,
//so=> draw opaque (like above)
//-------------------------------------------
//1. find clip rect
var clipRect = Rectangle.Intersect(logicalTextBox,
new Rectangle(currentClipRect.Left,
currentClipRect.Top,
currentClipRect.Width,
currentClipRect.Height));
//2. offset to canvas origin
clipRect.Offset(canvasOriginX, canvasOriginY);
//3. set rect rgn
win32MemDc.SetClipRect(clipRect);
unsafe
{
fixed(char *startAddr = &str[0])
{
//4.
NativeTextWin32.TextOutUnsafe(originalHdc,
(int)logicalTextBox.X + canvasOriginX,
(int)logicalTextBox.Y + canvasOriginY,
(startAddr + startAt), len);
}
}
//5. clear rect rgn
win32MemDc.ClearClipRect();
#if DEBUG
//NativeTextWin32.dbugDrawTextOrigin(tempDc,
// logicalTextBox.X + canvasOriginX,
// logicalTextBox.Y + canvasOriginY);
#endif
}
}