本文整理汇总了C#中Cairo.Context.LineTo方法的典型用法代码示例。如果您正苦于以下问题：C# Cairo.Context.LineTo方法的具体用法？C# Cairo.Context.LineTo怎么用？C# Cairo.Context.LineTo使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Cairo.Context的用法示例。
在下文中一共展示了Cairo.Context.LineTo方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: OnMouseMove
protected override void OnMouseMove(object o, Gtk.MotionNotifyEventArgs args, Cairo.PointD point)
{
if (!painting || offset.IsNotSet ())
return;
int x = (int)point.X;
int y = (int)point.Y;
if (last_point.IsNotSet ()) {
last_point = new Point (x, y);
return;
}
using (Cairo.Context g = new Cairo.Context (PintaCore.Layers.ToolLayer.Surface)) {
g.AppendPath (PintaCore.Layers.SelectionPath);
g.FillRule = Cairo.FillRule.EvenOdd;
g.Clip ();
g.Antialias = Cairo.Antialias.Subpixel;
g.MoveTo (last_point.X, last_point.Y);
g.LineTo (x, y);
g.SetSource (PintaCore.Workspace.ActiveDocument.CurrentLayer.Surface, offset.X, offset.Y);
g.LineWidth = BrushWidth;
g.LineCap = Cairo.LineCap.Round;
g.Stroke ();
}
var dirty_rect = GetRectangleFromPoints (last_point, new Point (x, y));
last_point = new Point (x, y);
surface_modified = true;
PintaCore.Workspace.Invalidate (dirty_rect);
}示例2: CreateBitmap
internal static Gdk.Pixbuf CreateBitmap(string stockId, double width, double height, double scaleFactor)
{
Gdk.Pixbuf result = null;
Gtk.IconSet iconset = Gtk.IconFactory.LookupDefault (stockId);
if (iconset != null) {
// Find the size that better fits the requested size
Gtk.IconSize gsize = Util.GetBestSizeFit (width);
result = iconset.RenderIcon (Gtk.Widget.DefaultStyle, Gtk.TextDirection.Ltr, Gtk.StateType.Normal, gsize, null, null, scaleFactor);
if (result == null || result.Width < width * scaleFactor) {
var gsize2x = Util.GetBestSizeFit (width * scaleFactor, iconset.Sizes);
if (gsize2x != Gtk.IconSize.Invalid && gsize2x != gsize)
// Don't dispose the previous result since the icon is owned by the IconSet
result = iconset.RenderIcon (Gtk.Widget.DefaultStyle, Gtk.TextDirection.Ltr, Gtk.StateType.Normal, gsize2x, null, null);
}
}
if (result == null && Gtk.IconTheme.Default.HasIcon (stockId))
result = Gtk.IconTheme.Default.LoadIcon (stockId, (int)width, (Gtk.IconLookupFlags)0);
if (result == null)
{
// render a custom gtk-missing-image icon
// if Gtk.Stock.MissingImage is not found
int w = (int)width;
int h = (int)height;
#if XWT_GTK3
Cairo.ImageSurface s = new Cairo.ImageSurface(Cairo.Format.ARGB32, w, h);
Cairo.Context cr = new Cairo.Context(s);
cr.SetSourceRGB(255, 255, 255);
cr.Rectangle(0, 0, w, h);
cr.Fill();
cr.SetSourceRGB(0, 0, 0);
cr.LineWidth = 1;
cr.Rectangle(0.5, 0.5, w - 1, h - 1);
cr.Stroke();
cr.SetSourceRGB(255, 0, 0);
cr.LineWidth = 3;
cr.LineCap = Cairo.LineCap.Round;
cr.LineJoin = Cairo.LineJoin.Round;
cr.MoveTo(w / 4, h / 4);
cr.LineTo((w - 1) - w / 4, (h - 1) - h / 4);
cr.MoveTo(w / 4, (h - 1) - h / 4);
cr.LineTo((w - 1) - w / 4, h / 4);
cr.Stroke();
result = Gtk3Extensions.GetFromSurface(s, 0, 0, w, h);
#else
using (Gdk.Pixmap pmap = new Gdk.Pixmap (Gdk.Screen.Default.RootWindow, w, h))
using (Gdk.GC gc = new Gdk.GC (pmap)) {
gc.RgbFgColor = new Gdk.Color (255, 255, 255);
pmap.DrawRectangle (gc, true, 0, 0, w, h);
gc.RgbFgColor = new Gdk.Color (0, 0, 0);
pmap.DrawRectangle (gc, false, 0, 0, (w - 1), (h - 1));
gc.SetLineAttributes (3, Gdk.LineStyle.Solid, Gdk.CapStyle.Round, Gdk.JoinStyle.Round);
gc.RgbFgColor = new Gdk.Color (255, 0, 0);
pmap.DrawLine (gc, (w / 4), (h / 4), ((w - 1) - (w / 4)), ((h - 1) - (h / 4)));
pmap.DrawLine (gc, ((w - 1) - (w / 4)), (h / 4), (w / 4), ((h - 1) - (h / 4)));
result = Gdk.Pixbuf.FromDrawable (pmap, pmap.Colormap, 0, 0, 0, 0, w, h);
}
#endif
}
return result;
}