public double GetLineHeight(LineSegment line)
 {
     if (Parent == null)
     {
         return(LineHeight);
     }
     return(Parent.GetLineHeight(line));
 }
Beispiel #2
0
        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];
                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);
                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++)
            {
                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);
                    DrawRoundRectangle(cr, true, true, rect.X - editor.HAdjustment.Value - curPadSize, rect.Y - editor.VAdjustment.Value - curPadSize, editor.LineHeight / 2, rect.Width + curPadSize * 2, rect.Height + curPadSize * 2);
                    cr.Fill();

                    if (age < animationLength)
                    {
                        var animationState = age / (double)animationLength;
                        curPadSize = (int)(2 + System.Math.Sin(System.Math.PI * animationState) * 2);
                        DrawRoundRectangle(cr, true, true, rect.X - editor.HAdjustment.Value - curPadSize, rect.Y - editor.VAdjustment.Value - curPadSize, editor.LineHeight / 2, rect.Width + curPadSize * 2, rect.Height + curPadSize * 2);
                        cr.SetSourceColor(GetColor(i, brightness, colorCount));
                        cr.Fill();

                        continue;
                    }
                }

                DrawRoundRectangle(cr, true, true, rect.X - editor.HAdjustment.Value, rect.Y - editor.VAdjustment.Value, editor.LineHeight / 2, rect.Width, rect.Height);

                cr.SetSourceColor(GetColor(i, brightness, colorCount));
                cr.Fill();
            }
        }