/// <summary>
/// This is a fairly basic method to draw text.
/// It does not do word or line wrapping.
/// </summary>
/// <param name="text">the string to write</param>
/// <param name="offset">number of characters from str that should be ignored</param>
/// <param name="count">number of characters from text that should be considered</param>
/// <param name="pos">the position to start the draw</param>
/// <param name="clip">the rectangle used to clip the draw calls or null to avoid clipping</param>
/// <param name="colors">the color to use for the text</param>
public void DrawTextLine(string text, int offset, int count, Vector3 pos, Rect clip, ColorRect colors)
{
Vector3 currentPos = pos;
for (int i = offset; i < offset + count; i++)
{
char c = text[i];
if (!IsCharacterAvailable(c))
{
log.InfoFormat("Character '{0}' not present in font {1}", c, this.font);
continue;
}
int glyphIndex = glyphMap[c];
TextureInfo glyphImage = glyphData[glyphIndex].TextureInfo;
// log.DebugFormat("Drawing character {0} from texture atlas {1}", c, glyphImage.Atlas.Name);
if (!leftToRight)
{
currentPos.x -= glyphData[glyphIndex].HorizontalAdvance;
}
glyphImage.Draw(currentPos, clip, colors);
if (leftToRight)
{
currentPos.x += glyphData[glyphIndex].HorizontalAdvance;
}
}
}
/// <summary>
/// Perform the actual rendering for this Window.
/// </summary>
protected override void DrawImpl(Rect drawArea, Rect clipArea, float z)
{
if (image == null)
{
return;
}
// render the image
Rect clippedArea = null;
if (clipArea != null)
{
clippedArea = clipArea.GetIntersection(PixelRect);
}
// update our alpha values
imageColors.SetAlpha(this.EffectiveAlpha);
image.Draw(drawArea, z, clippedArea, imageColors);
}
protected override void DrawText(float z)
{
if (textDirty || regionsDirty)
{
GenerateTextRegions();
}
drawTextMeter.Enter();
// throw new NotImplementedException();
Graphics g = GetGraphics();
// Rect renderRect = TextRenderArea;
Rect renderRect = GetVisibleTextArea();
for (int i = 0; i < regions.Length; ++i)
{
RectangleF rect = regions[i].GetBounds(g);
rect.Offset(renderRect.Left, renderRect.Top);
TextureInfo chunk = chunks[i];
chunk.Draw(new Vector3(rect.Left, rect.Top, z), this.TextRenderArea);
}
ReleaseGraphics(g);
drawTextMeter.Exit();
}
protected override void DrawSelf(float z)
{
if (lines.Count == 0)
{
// add an empty line
TextRange range = new TextRange();
range.start = 0;
range.end = 0;
lines.Add(range);
}
base.DrawSelf(z);
Rect clipRect = this.PixelRect;
// Draw the caret
PointF pt = GetOffset(caretIndex);
Vector3 drawPos = new Vector3(pt.X, pt.Y, z);
float zOffset = (int)frameStrata * GuiZFrameStrataStep +
(int)layerLevel * GuiZLayerLevelStep +
(int)frameLevel * GuiZFrameLevelStep;
float maxOffset = (int)FrameStrata.Maximum * GuiZFrameStrataStep;
float curOffset = maxOffset - zOffset;
drawPos.z = drawPos.z + curOffset - (int)SubLevel.Caret * GuiZSubLevelStep;
if (drawPos.x < clipRect.Left)
{
drawPos.x = clipRect.Left;
}
else if (drawPos.x + caret.Width > clipRect.Right)
{
drawPos.x = clipRect.Right - caret.Width;
}
SizeF caretSize = new SizeF(caret.Width, this.Font.LineSpacing);
ColorRect caretColorRect = new ColorRect(ColorEx.White);
caret.Draw(drawPos, caretSize, clipRect, caretColorRect);
}