public static Gdk.Region RectanglesToRegion(Gdk.Rectangle[] rects)
{
Gdk.Region reg = Gdk.Region.Rectangle(Gdk.Rectangle.Zero);
foreach (Gdk.Rectangle r in rects)
{
reg.UnionWithRect(r);
}
return(reg);
}
/// <summary>
/// Render the bytes in the highlight range.
/// </summary>
/// <param name="h">
/// A <see cref="Highlight"/>
/// </param>
/// <param name="merge">
/// Whether to visually merge the highlight with adjacent ones left and/or right.
/// </param>
/// <remarks>
/// This method doesn't check whether the merge flags are correct (eg there is indeed
/// a similar adjacent highlight). It just draws the highlight in such a way as
/// to appear merged to any similar highlights if they exist.
///</remarks>
internal protected virtual void RenderHighlight(Highlight h, Drawer.HighlightType left, Drawer.HighlightType right)
{
if (isAreaRealized == false)
{
return;
}
int rstart, bstart, xstart, ystart;
int rend, bend, xend, yend;
bool odd;
Gdk.GC gc;
Gdk.GC oddGC;
Gdk.GC evenGC;
Gdk.GC leftGC;
Gdk.GC rightGC;
oddGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, h.Type);
evenGC = drawer.GetBackgroundGC(Drawer.RowType.Even, h.Type);
GetDisplayInfoByOffset(h.Start, out rstart, out bstart, out xstart, out ystart);
GetDisplayInfoByOffset(h.End, out rend, out bend, out xend, out yend);
//System.Console.WriteLine("Start {0:x} {1} {2} x:{3} y:{4}", h.Start, rstart, bstart, xstart, ystart);
//System.Console.WriteLine("End {0:x} {1} {2} x:{3} y:{4}", h.End, rend, bend, xend, yend);
bool drawLeft = false;
int dxstart = xstart;
if (bstart > 0)
{
int digit;
GetOffsetFlags gof;
GetOffsetByDisplayInfo(xstart - 1, ystart, out digit, out gof);
if ((gof & GetOffsetFlags.Abyss) != 0)
{
dxstart -= drawer.Width;
drawLeft = true;
}
}
bool drawRight = false;
int dxend = xend;
if (bend < bpr - 1)
{
int digit;
GetOffsetFlags gof;
GetOffsetByDisplayInfo(xend + dpb * drawer.Width, yend, out digit, out gof);
if ((gof & GetOffsetFlags.Abyss) != 0)
{
dxend += drawer.Width;
drawRight = true;
}
}
// if the whole range is on one row
if (rstart == rend)
{
if (areaGroup.ManualDoubleBuffer)
{
BeginPaint(x + dxstart, y + ystart, dxend - dxstart + dpb * drawer.Width, drawer.Height);
}
// odd row?
odd = (((h.Start / bpr) % 2) == 1);
if (odd)
{
gc = oddGC;
leftGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, left);
rightGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, right);
}
else
{
gc = evenGC;
leftGC = drawer.GetBackgroundGC(Drawer.RowType.Even, left);
rightGC = drawer.GetBackgroundGC(Drawer.RowType.Even, right);
}
//render
if (drawLeft)
{
backPixmap.DrawRectangle(leftGC, true, x + dxstart, y + ystart, drawer.Width, drawer.Height);
}
if (drawRight)
{
backPixmap.DrawRectangle(rightGC, true, x + xend + dpb * drawer.Width, y + yend, drawer.Width, drawer.Height);
}
backPixmap.DrawRectangle(gc, true, x + xstart, y + ystart, xend - xstart + dpb * drawer.Width, drawer.Height);
RenderRangeHelper(h.Type, rstart, bstart, bend - bstart + 1);
}
else // multi-row range
{
if (areaGroup.ManualDoubleBuffer)
{
// handle double-buffering
Gdk.Region paintRegion = new Gdk.Region();
Gdk.Rectangle rectStart = new Gdk.Rectangle(x + dxstart, y + ystart, width - dxstart, drawer.Height);
Gdk.Rectangle rectMiddle;
if (rend > rstart + 1)
{
rectMiddle = new Gdk.Rectangle(x, y + ystart + drawer.Height, width, yend - ystart - drawer.Height);
}
else
{
rectMiddle = Gdk.Rectangle.Zero;
}
Gdk.Rectangle rectEnd = new Gdk.Rectangle(x, y + yend, dxend + dpb * drawer.Width, drawer.Height);
paintRegion.UnionWithRect(rectStart);
paintRegion.UnionWithRect(rectMiddle);
paintRegion.UnionWithRect(rectEnd);
BeginPaintRegion(paintRegion);
}
// render first row
odd = (((h.Start / bpr) % 2) == 1);
if (odd)
{
gc = oddGC;
leftGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, left);
rightGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, right);
}
else
{
gc = evenGC;
leftGC = drawer.GetBackgroundGC(Drawer.RowType.Even, left);
rightGC = drawer.GetBackgroundGC(Drawer.RowType.Even, right);
}
if (drawLeft)
{
backPixmap.DrawRectangle(leftGC, true, x + dxstart, y + ystart, drawer.Width, drawer.Height);
}
backPixmap.DrawRectangle(gc, true, x + xstart, y + ystart, width - xstart, drawer.Height);
RenderRangeHelper(h.Type, rstart, bstart, bpr - bstart);
long curOffset = h.Start + bpr - bstart;
// render middle rows
for (int i = rstart + 1; i < rend; i++)
{
odd = (((curOffset / bpr) % 2) == 1);
if (odd)
{
gc = oddGC;
}
else
{
gc = evenGC;
}
backPixmap.DrawRectangle(gc, true, x, y + i * drawer.Height, width, drawer.Height);
RenderRangeHelper(h.Type, i, 0, bpr);
curOffset += bpr;
}
// render last row
odd = (((h.End / bpr) % 2) == 1);
if (odd)
{
gc = oddGC;
leftGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, left);
rightGC = drawer.GetBackgroundGC(Drawer.RowType.Odd, right);
}
else
{
gc = evenGC;
leftGC = drawer.GetBackgroundGC(Drawer.RowType.Even, left);
rightGC = drawer.GetBackgroundGC(Drawer.RowType.Even, right);
}
if (drawRight)
{
backPixmap.DrawRectangle(rightGC, true, x + xend + dpb * drawer.Width, y + yend, drawer.Width, drawer.Height);
}
backPixmap.DrawRectangle(gc, true, x, y + yend, xend + dpb * drawer.Width, drawer.Height);
RenderRangeHelper(h.Type, rend, 0, bend + 1);
}
if (areaGroup.ManualDoubleBuffer)
{
EndPaint();
}
}