public CairoContextBackend CreateContext()
{
CairoContextBackend ctx = new CairoContextBackend(Util.GetScaleFactor(this));
if (!IsRealized)
{
Cairo.Surface sf = new Cairo.ImageSurface(Cairo.Format.ARGB32, 1, 1);
ctx.Context = new Cairo.Context(sf);
ctx.TempSurface = sf;
}
else
{
ctx.Context = Gdk.CairoHelper.Create(GdkWindow);
}
if (!VisibleWindow)
{
ctx.Context.Translate(Allocation.X, Allocation.Y);
#if limada_8b3c8a
// Set ContextBackend Origin
ctx.Origin.X = Allocation.X;
ctx.Origin.Y = Allocation.Y;
#endif
}
return(ctx);
}
public override void DrawTextLayout(object backend, TextLayout layout, double x, double y)
{
Pango.Layout pl = (Pango.Layout)WidgetRegistry.GetBackend(layout);
CairoContextBackend ctx = (CairoContextBackend)backend;
ctx.Context.MoveTo(x, y);
if (layout.Height <= 0)
{
Pango.CairoHelper.ShowLayout(ctx.Context, pl);
}
else
{
var lc = pl.LineCount;
var scale = Pango.Scale.PangoScale;
double h = 0;
for (int i = 0; i < lc; i++)
{
var line = pl.Lines [i];
var ext = new Pango.Rectangle();
var extl = new Pango.Rectangle();
line.GetExtents(ref ext, ref extl);
h += (extl.Height / scale);
if (h > layout.Height)
{
break;
}
ctx.Context.MoveTo(x, y + h);
Pango.CairoHelper.ShowLayoutLine(ctx.Context, line);
}
}
}
public void Draw(ApplicationContext actx, Cairo.Context ctx, double scaleFactor, double x, double y, ImageDescription idesc)
{
if (stockId != null)
{
Gdk.Pixbuf img = null;
if (frames != null)
{
img = frames.FirstOrDefault(p => p.Width == (int)idesc.Size.Width && p.Height == (int)idesc.Size.Height);
}
if (img == null)
{
img = ImageHandler.CreateBitmap(stockId, idesc.Size.Width, idesc.Size.Height);
AddFrame(img);
}
DrawPixbuf(ctx, img, x, y, idesc);
}
else if (drawCallback != null)
{
CairoContextBackend c = new CairoContextBackend(scaleFactor)
{
Context = ctx
};
actx.InvokeUserCode(delegate {
drawCallback(c, new Rectangle(x, y, idesc.Size.Width, idesc.Size.Height));
});
}
else
{
DrawPixbuf(ctx, GetBestFrame(actx, scaleFactor, idesc.Size.Width, idesc.Size.Height, false), x, y, idesc);
}
}
protected override void OnRender(Cairo.Context cr, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, CellRendererState flags)
{
int wx, wy, dx = 0, dy = 0;
var tree = widget as Gtk.TreeView;
// Tree coordinates must be converted to widget coordinates,
// otherwise custom cell bounds will have an offset to the parent widget
if (tree != null)
{
tree.ConvertBinWindowToWidgetCoords(cell_area.X, cell_area.Y, out wx, out wy);
dx = wx - cell_area.X;
dy = wy - cell_area.Y;
cell_area.X += dx;
background_area.X += dx;
cell_area.Y += dy;
background_area.Y += dy;
}
Parent.StartDrawing(new Rectangle(background_area.X, background_area.Y, background_area.Width, background_area.Height), new Rectangle(cell_area.X, cell_area.Y, cell_area.Width, cell_area.Height), flags);
CellView.ApplicationContext.InvokeUserCode(delegate {
CairoContextBackend ctx = new CairoContextBackend(Util.GetScaleFactor(widget));
ctx.Context = cr;
ctx.Context.Translate(-dx, -dy);
using (ctx) {
CellView.Draw(ctx, new Rectangle(cell_area.X, cell_area.Y, cell_area.Width, cell_area.Height));
}
});
Parent.EndDrawing();
}
protected void OnDraw(Rectangle dirtyRect, CairoContextBackend context)
{
Backend.ApplicationContext.InvokeUserCode(delegate {
using (context) {
EventSink.OnDraw(context, dirtyRect);
}
});
}
public override object CreateContext(object backend)
{
Cairo.Surface sf = (Cairo.Surface)backend;
CairoContextBackend ctx = new CairoContextBackend(1);
ctx.Context = new Cairo.Context(sf);
return(ctx);
}
protected void OnDraw(Rectangle dirtyRect, CairoContextBackend context)
{
Backend.ApplicationContext.InvokeUserCode(delegate {
using (context) {
var r = new Rectangle(dirtyRect.X - context.Origin.X, dirtyRect.Y - context.Origin.Y, dirtyRect.Width, dirtyRect.Height);
EventSink.OnDraw(context, r);
}
});
}
protected override void Render(Gdk.Drawable window, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, Gdk.Rectangle expose_area, Gtk.CellRendererState flags)
{
cellView.ApplicationContext.InvokeUserCode(delegate {
CairoContextBackend ctx = new CairoContextBackend(Util.GetScaleFactor(widget));
ctx.Context = Gdk.CairoHelper.Create(window);
using (ctx) {
cellView.Draw(ctx, new Rectangle(cell_area.X, cell_area.Y, cell_area.Width, cell_area.Height));
}
});
}
protected override void OnRender(Cairo.Context cr, Gtk.Widget widget, Gdk.Rectangle background_area, Gdk.Rectangle cell_area, CellRendererState flags)
{
Parent.StartDrawing(new Rectangle(background_area.X, background_area.Y, background_area.Width, background_area.Height), new Rectangle(cell_area.X, cell_area.Y, cell_area.Width, cell_area.Height), flags);
CellView.ApplicationContext.InvokeUserCode(delegate {
CairoContextBackend ctx = new CairoContextBackend(Util.GetScaleFactor(widget));
ctx.Context = cr;
using (ctx) {
CellView.Draw(ctx, new Rectangle(cell_area.X, cell_area.Y, cell_area.Width, cell_area.Height));
}
});
Parent.EndDrawing();
}
public void Draw(ApplicationContext actx, Cairo.Context ctx, double scaleFactor, double x, double y, ImageDescription idesc)
{
if (stockId != null)
{
ImageFrame frame = null;
// PERF: lambdas capture here, this is a hot path.
if (frames != null)
{
foreach (var f in frames)
{
if (f.Width == (int)idesc.Size.Width && f.Height == (int)idesc.Size.Height && f.Scale == scaleFactor)
{
frame = f;
break;
}
}
}
if (frame == null)
{
frame = new ImageFrame(ImageHandler.CreateBitmap(stockId, idesc.Size.Width, idesc.Size.Height, scaleFactor), (int)idesc.Size.Width, (int)idesc.Size.Height, false);
frame.Scale = scaleFactor;
AddFrame(frame);
}
DrawPixbuf(ctx, frame.Pixbuf, x, y, idesc);
}
else if (drawCallback != null)
{
CairoContextBackend c = new CairoContextBackend(scaleFactor)
{
Context = ctx
};
if (actx != null)
{
actx.InvokeUserCode(delegate {
drawCallback(c, new Rectangle(x, y, idesc.Size.Width, idesc.Size.Height), idesc, actx.Toolkit);
});
}
else
{
drawCallback(c, new Rectangle(x, y, idesc.Size.Width, idesc.Size.Height), idesc, Toolkit.CurrentEngine);
}
}
else
{
DrawPixbuf(ctx, GetBestFrame(actx, scaleFactor, idesc.Size.Width, idesc.Size.Height, false), x, y, idesc);
}
}
public object CreateContext()
{
CairoContextBackend ctx = new CairoContextBackend();
if (!IsRealized)
{
Cairo.Surface sf = new Cairo.ImageSurface(Cairo.Format.ARGB32, 1, 1);
Cairo.Context c = new Cairo.Context(sf);
ctx.Context = c;
ctx.TempSurface = sf;
}
else
{
ctx.Context = Gdk.CairoHelper.Create(GdkWindow);
}
return(ctx);
}
public void Draw(ApplicationContext actx, Cairo.Context ctx, double scaleFactor, double x, double y, ImageDescription idesc)
{
if (stockId != null)
{
ImageFrame frame = null;
if (frames != null)
{
frame = frames.FirstOrDefault(f => f.Width == (int)idesc.Size.Width && f.Height == (int)idesc.Size.Height && f.Scale == scaleFactor);
}
if (frame == null)
{
frame = new ImageFrame(ImageHandler.CreateBitmap(stockId, idesc.Size.Width, idesc.Size.Height, scaleFactor), (int)idesc.Size.Width, (int)idesc.Size.Height, false);
frame.Scale = scaleFactor;
AddFrame(frame);
}
DrawPixbuf(ctx, frame.Pixbuf, x, y, idesc);
}
else if (drawCallback != null)
{
CairoContextBackend c = new CairoContextBackend(scaleFactor)
{
Context = ctx
};
if (actx != null)
{
actx.InvokeUserCode(delegate {
drawCallback(c, new Rectangle(x, y, idesc.Size.Width, idesc.Size.Height));
});
}
else
{
drawCallback(c, new Rectangle(x, y, idesc.Size.Width, idesc.Size.Height));
}
}
else
{
DrawPixbuf(ctx, GetBestFrame(actx, scaleFactor, idesc.Size.Width, idesc.Size.Height, false), x, y, idesc);
}
}
public void Wrap(TextLayout layout, CairoContextBackend ctx)
{
var text = layout.Text;
var be = (GtkTextLayoutBackendHandler.PangoBackend)Toolkit.GetBackend(layout);
var pl = be.Layout;
var fe = ctx.Context.FontExtents;
Baseline = fe.Ascent / (fe.Ascent + fe.Descent);
LineHeight = fe.Ascent + fe.Descent;
LineY = LineHeight;
var iLf = text.IndexOfAny(new char[] { '\n', '\r' });
HasLineFeed = iLf >= 0;
var textWidth = layout.Width;
if (!HasLineFeed && (layout.Height <= 0 || layout.Height <= LineHeight) && (layout.Width <= 0 || textWidth <= layout.Width))
{
LineWidth = textWidth;
SingleLine(this);
}
else
{
var ellipsize = pl.Ellipsize;
pl.Ellipsize = Pango.EllipsizeMode.None;
var lc = pl.LineCount;
var scale = Pango.Scale.PangoScale;
var wrap = pl.Wrap;
var layoutHeight = layout.Height;
if (layoutHeight <= 0)
{
var plw = 0;
var plh = 0;
pl.GetSize(out plw, out plh);
layoutHeight = plh / scale;
}
MaxHeight = PreferedSize.Height > 0 ? PreferedSize.Height : (layoutHeight <= 0 ? double.MaxValue : layoutHeight);
MaxWidth = PreferedSize.Width > 0 ? PreferedSize.Width : (layout.Width <= 0 ? textWidth : layout.Width);
CursorPos = 0;
LineStart = 0;
foreach (var ll in Analyselayout(pl))
{
if (LineY > MaxHeight)
{
break;
}
LineWidth = ll.Width;
LineStart = ll.Pos;
CursorPos = ll.Pos + ll.Len;
MultiLine(this);
LineY += ll.Height;
}
pl.Ellipsize = ellipsize;
}
}
public object Create(Context context)
{
CairoContextBackend c = (CairoContextBackend)WidgetRegistry.GetBackend(context);
return(Pango.CairoHelper.CreateLayout(c.Context));
}
