本文整理汇总了C#中Cairo.Context.Clip方法的典型用法代码示例。如果您正苦于以下问题：C# Cairo.Context.Clip方法的具体用法？C# Cairo.Context.Clip怎么用？C# Cairo.Context.Clip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.Clip方法的5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: HandleApply
// Called from asynchronously from Renderer.OnCompletion ()
void HandleApply ()
{
Debug.WriteLine ("LivePreviewManager.HandleApply()");
var item = new SimpleHistoryItem (effect.Icon, effect.Name);
item.TakeSnapshotOfLayer (PintaCore.Layers.CurrentLayerIndex);
using (var ctx = new Cairo.Context (layer.Surface)) {
ctx.Save ();
ctx.AppendPath (PintaCore.Workspace.ActiveDocument.Selection.SelectionPath);
ctx.FillRule = Cairo.FillRule.EvenOdd;
ctx.Clip ();
ctx.Operator = Cairo.Operator.Source;
ctx.SetSourceSurface (live_preview_surface, (int)layer.Offset.X, (int)layer.Offset.Y);
ctx.Paint ();
ctx.Restore ();
}
PintaCore.History.PushNewItem (item);
FireLivePreviewEndedEvent(RenderStatus.Completed, null);
live_preview_enabled = false;
PintaCore.Workspace.Invalidate (); //TODO keep track of dirty bounds.
CleanUp ();
}示例2: RedrawText
/// <summary>
/// Draws the text.
/// </summary>
/// <param name="showCursor">Whether or not to show the mouse cursor in the drawing.</param>
/// <param name="useTextLayer">Whether or not to use the TextLayer (as opposed to the Userlayer).</param>
private void RedrawText(bool showCursor, bool useTextLayer)
{
Rectangle r = CurrentTextEngine.GetLayoutBounds();
r.Inflate(10 + OutlineWidth, 10 + OutlineWidth);
CurrentTextBounds = r;
Rectangle cursorBounds = Rectangle.Zero;
Cairo.ImageSurface surf;
if (!useTextLayer)
{
//Draw text on the current UserLayer's surface as finalized text.
surf = PintaCore.Workspace.ActiveDocument.CurrentUserLayer.Surface;
}
else
{
//Draw text on the current UserLayer's TextLayer's surface as re-editable text.
surf = PintaCore.Workspace.ActiveDocument.CurrentUserLayer.TextLayer.Surface;
ClearTextLayer();
}
using (var g = new Cairo.Context (surf)) {
g.Save ();
// Show selection if on text layer
if (useTextLayer) {
// Selected Text
Cairo.Color c = new Cairo.Color (0.7, 0.8, 0.9, 0.5);
foreach (Rectangle rect in CurrentTextEngine.SelectionRectangles)
g.FillRectangle (rect.ToCairoRectangle (), c);
}
g.AppendPath (PintaCore.Workspace.ActiveDocument.Selection.SelectionPath);
g.FillRule = Cairo.FillRule.EvenOdd;
g.Clip ();
g.MoveTo (new Cairo.PointD (CurrentTextEngine.Origin.X, CurrentTextEngine.Origin.Y));
g.Color = PintaCore.Palette.PrimaryColor;
//Fill in background
if (BackgroundFill) {
using (var g2 = new Cairo.Context (surf)) {
g2.FillRectangle(CurrentTextEngine.GetLayoutBounds().ToCairoRectangle(), PintaCore.Palette.SecondaryColor);
}
}
// Draw the text
if (FillText)
Pango.CairoHelper.ShowLayout (g, CurrentTextEngine.Layout);
if (FillText && StrokeText) {
g.Color = PintaCore.Palette.SecondaryColor;
g.LineWidth = OutlineWidth;
Pango.CairoHelper.LayoutPath (g, CurrentTextEngine.Layout);
g.Stroke ();
} else if (StrokeText) {
g.Color = PintaCore.Palette.PrimaryColor;
g.LineWidth = OutlineWidth;
Pango.CairoHelper.LayoutPath (g, CurrentTextEngine.Layout);
g.Stroke ();
}
if (showCursor) {
var loc = CurrentTextEngine.GetCursorLocation ();
g.Antialias = Cairo.Antialias.None;
g.DrawLine (new Cairo.PointD (loc.X, loc.Y), new Cairo.PointD (loc.X, loc.Y + loc.Height), new Cairo.Color (0, 0, 0, 1), 1);
cursorBounds = Rectangle.Inflate (loc, 2, 10);
}
g.Restore ();
if (useTextLayer && (is_editing || ctrlKey) && !CurrentTextEngine.IsEmpty())
{
//Draw the text edit rectangle.
g.Save();
g.Translate(.5, .5);
using (Cairo.Path p = g.CreateRectanglePath(new Cairo.Rectangle(CurrentTextBounds.Left, CurrentTextBounds.Top,
CurrentTextBounds.Width, CurrentTextBounds.Height - FontSize)))
{
g.AppendPath(p);
}
g.LineWidth = 1;
g.Color = new Cairo.Color(1, 1, 1);
g.StrokePreserve();
//.........这里部分代码省略.........
示例3: RedrawText
private void RedrawText(bool showCursor, bool useToolLayer)
{
Cairo.ImageSurface surf;
var invalidate_cursor = old_cursor_bounds;
if (!useToolLayer)
surf = PintaCore.Workspace.ActiveDocument.CurrentLayer.Surface;
else {
surf = PintaCore.Workspace.ActiveDocument.ToolLayer.Surface;
surf.Clear ();
}
using (var g = new Cairo.Context (surf)) {
g.Save ();
// Show selection if on tool layer
if (useToolLayer) {
// Selected Text
Cairo.Color c = new Cairo.Color (0.7, 0.8, 0.9, 0.5);
foreach (Rectangle rect in engine.SelectionRectangles)
g.FillRectangle (rect.ToCairoRectangle (), c);
}
g.AppendPath (PintaCore.Workspace.ActiveDocument.SelectionPath);
g.FillRule = Cairo.FillRule.EvenOdd;
g.Clip ();
g.MoveTo (new Cairo.PointD (engine.Origin.X, engine.Origin.Y));
g.Color = PintaCore.Palette.PrimaryColor;
if (BackgroundFill) {
using (var g2 = new Cairo.Context (surf)) {
g2.FillRectangle (engine.GetLayoutBounds ().ToCairoRectangle (),PintaCore.Palette.SecondaryColor);
}
}
if (FillText) {
Pango.CairoHelper.ShowLayout (g, engine.Layout);
}
if (FillText && StrokeText) {
g.Color = PintaCore.Palette.SecondaryColor;
g.LineWidth = OutlineWidth;
Pango.CairoHelper.LayoutPath (g, engine.Layout);
g.Stroke ();
} else if (StrokeText) {
g.Color = PintaCore.Palette.PrimaryColor;
g.LineWidth = OutlineWidth;
Pango.CairoHelper.LayoutPath (g, engine.Layout);
g.Stroke ();
}
if (showCursor) {
var loc = engine.GetCursorLocation ();
g.Antialias = Cairo.Antialias.None;
g.DrawLine (new Cairo.PointD (loc.X, loc.Y), new Cairo.PointD (loc.X, loc.Y + loc.Height), new Cairo.Color (0, 0, 0, 1), 1);
loc.Inflate (2, 10);
old_cursor_bounds = loc;
}
g.Restore ();
}
Rectangle r = engine.GetLayoutBounds ();
r.Inflate (10 + OutlineWidth, 10 + OutlineWidth);
PintaCore.Workspace.Invalidate (old_bounds);
PintaCore.Workspace.Invalidate (invalidate_cursor);
PintaCore.Workspace.Invalidate (r);
old_bounds = r;
}示例4: 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5: OnConfigured
void OnConfigured(object o, ConfigureEventArgs args)
{
pixmap = new Pixmap (args.Event.Window,
Allocation.Width,
Allocation.Height);
cairo = Gdk.CairoHelper.Create (pixmap);
cairo.Rectangle (0, 0,
Allocation.Width,
Allocation.Height);
cairo.Clip ();
ArrayList oldlist = points;
points = new ArrayList ();
ComputePositions ();
foreach (GraphPoint point in oldlist)
{
__AddGameInfo (point.info);
}
UpdatePixmap ();
}