Beispiel #1
0
        /// <summary>
        /// Draws the legend.
        /// </summary>
        internal override void Draw()
        {
            ChartRendererInfo  cri = (ChartRendererInfo)this.rendererParms.RendererInfo;
            LegendRendererInfo lri = cri.legendRendererInfo;

            if (lri == null)
            {
                return;
            }

            XGraphics          gfx   = this.rendererParms.Graphics;
            RendererParameters parms = new RendererParameters();

            parms.Graphics = gfx;

            LegendEntryRenderer ler = new LegendEntryRenderer(parms);

            bool verticalLegend = (lri.legend.docking == DockingType.Left || lri.legend.docking == DockingType.Right);
            int  paddingFactor  = 1;

            if (lri.BorderPen != null)
            {
                paddingFactor = 2;
            }
            XRect legendRect = lri.Rect;

            legendRect.X += LegendRenderer.LeftPadding * paddingFactor;
            legendRect.Y += LegendRenderer.TopPadding * paddingFactor;
            foreach (LegendEntryRendererInfo leri in cri.legendRendererInfo.Entries)
            {
                XRect entryRect = legendRect;
                entryRect.Width  = leri.Width;
                entryRect.Height = leri.Height;

                leri.Rect          = entryRect;
                parms.RendererInfo = leri;
                ler.Draw();

                if (verticalLegend)
                {
                    legendRect.Y += entryRect.Height + LegendRenderer.EntrySpacing;
                }
                else
                {
                    legendRect.X += entryRect.Width + LegendRenderer.EntrySpacing;
                }
            }

            // Draw border around legend
            if (lri.BorderPen != null)
            {
                XRect borderRect = lri.Rect;
                borderRect.X      += LegendRenderer.LeftPadding;
                borderRect.Y      += LegendRenderer.TopPadding;
                borderRect.Width  -= LegendRenderer.LeftPadding + LegendRenderer.RightPadding;
                borderRect.Height -= LegendRenderer.TopPadding + LegendRenderer.BottomPadding;
                gfx.DrawRectangle(lri.BorderPen, borderRect);
            }
        }
Beispiel #2
0
        /// <summary>
        /// Layouts and calculates the space used by the legend.
        /// </summary>
        internal override void Format()
        {
            ChartRendererInfo  cri = (ChartRendererInfo)this.rendererParms.RendererInfo;
            LegendRendererInfo lri = cri.legendRendererInfo;

            if (lri == null)
            {
                return;
            }

            RendererParameters parms = new RendererParameters();

            parms.Graphics = this.rendererParms.Graphics;

            bool  verticalLegend    = (lri.legend.docking == DockingType.Left || lri.legend.docking == DockingType.Right);
            XSize maxMarkerArea     = new XSize();
            LegendEntryRenderer ler = new LegendEntryRenderer(parms);

            foreach (LegendEntryRendererInfo leri in lri.Entries)
            {
                parms.RendererInfo = leri;
                ler.Format();

                maxMarkerArea.Width  = Math.Max(leri.MarkerArea.Width, maxMarkerArea.Width);
                maxMarkerArea.Height = Math.Max(leri.MarkerArea.Height, maxMarkerArea.Height);

                if (verticalLegend)
                {
                    lri.Width   = Math.Max(lri.Width, leri.Width);
                    lri.Height += leri.Height;
                }
                else
                {
                    lri.Width += leri.Width;
                    lri.Height = Math.Max(lri.Height, leri.Height);
                }
            }

            // Add padding to left, right, top and bottom
            int paddingFactor = 1;

            if (lri.BorderPen != null)
            {
                paddingFactor = 2;
            }
            lri.Width  += (LegendRenderer.LeftPadding + LegendRenderer.RightPadding) * paddingFactor;
            lri.Height += (LegendRenderer.TopPadding + LegendRenderer.BottomPadding) * paddingFactor;
            if (verticalLegend)
            {
                lri.Height += LegendRenderer.EntrySpacing * (lri.Entries.Length - 1);
            }
            else
            {
                lri.Width += LegendRenderer.EntrySpacing * (lri.Entries.Length - 1);
            }

            foreach (LegendEntryRendererInfo leri in lri.Entries)
            {
                leri.MarkerArea = maxMarkerArea;
            }
        }