public void Draw(Cairo.Context cr, Cairo.Rectangle area)
{
TextViewMargin textViewMargin = editor.TextViewMargin;
ISyntaxMode mode = Document.SyntaxMode != null && editor.Options.EnableSyntaxHighlighting ? Document.SyntaxMode : new SyntaxMode(Document);
TextViewMargin.LayoutWrapper lineLayout = null;
double brightness = HslColor.Brightness(editor.ColorStyle.PlainText.Background);
int colorCount = foldSegments.Count + 2;
cr.SetSourceColor(GetColor(-1, brightness, colorCount));
cr.Rectangle(area);
cr.Fill();
var rectangles = new Cairo.Rectangle[foldSegments.Count];
const int xPadding = 4;
const int yPadding = 2;
const int rightMarginPadding = 16;
for (int i = foldSegments.Count - 1; i >= 0; i--)
{
var segment = foldSegments [i];
if (segment.IsInvalid)
{
continue;
}
var segmentStartLine = segment.StartLine;
var segmentEndLine = segment.EndLine;
int curWidth = 0;
var endLine = segmentEndLine.NextLine;
var y = editor.LineToY(segmentStartLine.LineNumber);
if (y < editor.VAdjustment.Value)
{
segmentStartLine = editor.GetLine(editor.YToLine(editor.VAdjustment.Value));
y = editor.LineToY(segmentStartLine.LineNumber);
}
for (var curLine = segmentStartLine; curLine != endLine && y < editor.VAdjustment.Value + editor.Allocation.Height; curLine = curLine.NextLine)
{
var curLayout = textViewMargin.CreateLinePartLayout(mode, curLine, curLine.Offset, curLine.Length, -1, -1);
var width = (int)(curLayout.Width);
curWidth = System.Math.Max(curWidth, width);
y += editor.GetLineHeight(curLine);
}
double xPos = textViewMargin.XOffset;
double rectangleWidth = 0, rectangleHeight = 0;
lineLayout = textViewMargin.CreateLinePartLayout(mode, segmentStartLine, segmentStartLine.Offset, segmentStartLine.Length, -1, -1);
var rectangleStart = lineLayout.Layout.IndexToPos(GetFirstNonWsIdx(lineLayout.Layout.Text));
xPos = System.Math.Max(textViewMargin.XOffset, (textViewMargin.XOffset + textViewMargin.TextStartPosition + rectangleStart.X / Pango.Scale.PangoScale) - xPadding);
lineLayout = textViewMargin.CreateLinePartLayout(mode, segmentEndLine, segmentEndLine.Offset, segmentEndLine.Length, -1, -1);
var rectangleEnd = lineLayout.Layout.IndexToPos(GetFirstNonWsIdx(lineLayout.Layout.Text));
xPos = System.Math.Min(xPos, System.Math.Max(textViewMargin.XOffset, (textViewMargin.XOffset + textViewMargin.TextStartPosition + rectangleEnd.X / Pango.Scale.PangoScale) - xPadding));
rectangleWidth = textViewMargin.XOffset + textViewMargin.TextStartPosition + curWidth - xPos + xPadding * 2;
if (i < foldSegments.Count - 1)
{
rectangleWidth = System.Math.Max((rectangles [i + 1].X + rectangles[i + 1].Width + rightMarginPadding) - xPos, rectangleWidth);
}
y = editor.LineToY(segment.StartLine.LineNumber);
var yEnd = editor.LineToY(segment.EndLine.LineNumber + 1) + (segment.EndLine.LineNumber == editor.LineCount ? editor.LineHeight : 0);
if (yEnd == 0)
{
yEnd = editor.VAdjustment.Upper;
}
rectangleHeight = yEnd - y;
rectangles[i] = new Cairo.Rectangle(xPos, y - yPadding, rectangleWidth, rectangleHeight + yPadding * 2);
}
for (int i = 0; i < foldSegments.Count; i++)
{
Cairo.Rectangle clampedRect;
var rect = rectangles[i];
if (i == foldSegments.Count - 1)
{
/* var radius = (int)(editor.Options.Zoom * 2);
* int w = 2 * radius;
* using (var shadow = new Blur (
* System.Math.Min ((int)rect.Width + w * 2, editor.Allocation.Width),
* System.Math.Min ((int)rect.Height + w * 2, editor.Allocation.Height),
* radius)) {
* using (var gctx = shadow.GetContext ()) {
* gctx.Color = new Cairo.Color (0, 0, 0, 0);
* gctx.Fill ();
*
* var a = 0;
* var b = 0;
* DrawRoundRectangle (gctx, true, true, w - a, w - b, editor.LineHeight / 4, rect.Width + a * 2, rect.Height + a * 2);
* var bg = editor.ColorStyle.Default.CairoColor;
* gctx.Color = new Cairo.Color (bg.R, bg.G, bg.B, 0.6);
* gctx.Fill ();
* }
*
* cr.Save ();
* cr.Translate (rect.X - w - editor.HAdjustment.Value, rect.Y - editor.VAdjustment.Value - w);
* shadow.Draw (cr);
* cr.Restore ();
* }*/
var curPadSize = 1;
var age = (DateTime.Now - startTime).TotalMilliseconds;
var alpha = 0.1;
if (age < animationLength)
{
var animationState = age / (double)animationLength;
curPadSize = (int)(3 + System.Math.Sin(System.Math.PI * animationState) * 3);
alpha = 0.1 + (1.0 - animationState) / 5;
}
var bg = editor.ColorStyle.PlainText.Foreground;
cr.SetSourceRGBA(bg.R, bg.G, bg.B, alpha);
clampedRect = ClampRect(rect.X - editor.HAdjustment.Value - curPadSize, rect.Y - editor.VAdjustment.Value - curPadSize, editor.LineHeight / 2, rect.Width + curPadSize * 2, rect.Height + curPadSize * 2, area);
DrawRoundRectangle(cr, true, true, clampedRect.X, clampedRect.Y, editor.LineHeight / 2, clampedRect.Width, clampedRect.Height);
cr.Fill();
if (age < animationLength)
{
var animationState = age / (double)animationLength;
curPadSize = (int)(2 + System.Math.Sin(System.Math.PI * animationState) * 2);
clampedRect = ClampRect(rect.X - editor.HAdjustment.Value - curPadSize, rect.Y - editor.VAdjustment.Value - curPadSize, editor.LineHeight / 2, rect.Width + curPadSize * 2, rect.Height + curPadSize * 2, area);
DrawRoundRectangle(cr, true, true, clampedRect.X, clampedRect.Y, editor.LineHeight / 2, clampedRect.Width, clampedRect.Height);
cr.SetSourceColor(GetColor(i, brightness, colorCount));
cr.Fill();
continue;
}
}
clampedRect = ClampRect(rect.X - editor.HAdjustment.Value, rect.Y - editor.VAdjustment.Value, editor.LineHeight / 2, rect.Width, rect.Height, area);
DrawRoundRectangle(cr, true, true, clampedRect.X, clampedRect.Y, editor.LineHeight / 2, clampedRect.Width, clampedRect.Height);
cr.SetSourceColor(GetColor(i, brightness, colorCount));
cr.Fill();
}
}