本文整理汇总了C#中Cairo.Context.SetSourceRGB方法的典型用法代码示例。如果您正苦于以下问题：C# Context.SetSourceRGB方法的具体用法？C# Context.SetSourceRGB怎么用？C# Context.SetSourceRGB使用的例子？那么恭喜您, 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Context.SetSourceRGB方法的15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: CreatePng
public void CreatePng ()
{
const int Width = 480;
const int Height = 160;
const int CheckSize = 10;
const int Spacing = 2;
// Create an Image-based surface with data stored in ARGB32 format and a context,
// "using" is used here to ensure that they are Disposed once we are done
using (ImageSurface surface = new ImageSurface (Format.ARGB32, Width, Height))
using (Context cr = new Cairo.Context (surface))
{
// Start drawing a checkerboard
int i, j, xcount, ycount;
xcount = 0;
i = Spacing;
while (i < Width) {
j = Spacing;
ycount = xcount % 2; // start with even/odd depending on row
while (j < Height) {
if (ycount % 2 != 0)
cr.SetSourceRGB (1, 0, 0);
else
cr.SetSourceRGB (1, 1, 1);
// If we're outside the clip, this will do nothing.
cr.Rectangle (i, j, CheckSize, CheckSize);
cr.Fill ();
j += CheckSize + Spacing;
++ycount;
}
i += CheckSize + Spacing;
++xcount;
}
// Select a font to draw with
cr.SelectFontFace ("serif", FontSlant.Normal, FontWeight.Bold);
cr.SetFontSize (64.0);
// Select a color (blue)
cr.SetSourceRGB (0, 0, 1);
// Draw
cr.MoveTo (20, 100);
cr.ShowText ("Hello, World");
surface.WriteToPng ("test.png");
}
}示例2: DrawPoints
public static void DrawPoints(List<PointD> points,Context cr)
{
foreach (PointD p in points){
cr.MoveTo(p);
cr.SetSourceRGB (0.3, 0.3, 0.3);
cr.Arc (p.X, p.Y, 2, 0, 2 * Math.PI);
cr.Fill ();
}
}示例3: Draw
public static void Draw(Context grw, Line line)
{
var color = AppController.Instance.Config.LineColor;
grw.SetSourceRGB (
color.Red,
color.Green,
color.Blue);
var segments = AppController.Instance.Surface.Segments;
var s1 = segments.FirstOrDefault (s => s.Position.X == line.Input.X
&& s.Position.Y == line.Input.Y);
var s2 = segments.FirstOrDefault (s => s.Position.X == line.Output.X
&& s.Position.Y == line.Output.Y);
if (s1 == null || s2 == null)
{
return;
}
//todo : use one func.
var start = s1.Connectors
.FirstOrDefault (p => p.Marker == line.InputMarker);
//todo : use one func.
var stop = s2.Connectors
.FirstOrDefault (p => p.Marker == line.OutputMarker);
if (start == null || stop == null)
{
return;
}
grw.MoveTo (
start.Center.GeometryX,
start.Center.GeometryY);
if (line.Input.X == line.Output.X ||
line.Input.Y == line.Output.Y) {
grw.LineTo (
stop.Center.GeometryX,
stop.Center.GeometryY);
} else {
grw.LineTo (
stop.Center.GeometryX,
start.Center.GeometryY);
grw.LineTo (
stop.Center.GeometryX,
stop.Center.GeometryY);
}
grw.Stroke();
}示例4: draw
public void draw(Context cr)
{
Triangle t = model.tri;
switch (model.alignment) {
case ActiveTriangle.TriangleAlignment.ChaoticEvil:
cr.SetSourceRGB (0.5, 0, 0);
break;
case ActiveTriangle.TriangleAlignment.TrueNeutral:
cr.SetSourceRGB (0, 0.8, 0);
break;
default:
cr.SetSourceRGB (1.0, 1.0, 0);
break;
}
cr.LineWidth = 1.1;
cr.MoveTo (t.a);
cr.LineTo (t.b);
cr.MoveTo (t.b);
cr.LineTo (t.c);
cr.MoveTo (t.c);
cr.LineTo (t.a);
cr.Stroke ();
cr.Fill();
Tuple<PointD,PointD,PointD,PointD> points;
points = model.getSharpestPointAndAssociatedMidpointAndDullestPoints ();
PointD sharpest = points.Item1;
PointD midPoint = points.Item2;
cr.SetSourceRGB (1.0, 0.3, 0.3);
cr.Arc (sharpest.X, sharpest.Y, 2, 0, 2 * Math.PI);
cr.Fill ();
cr.Arc (midPoint.X, midPoint.Y, 2, 0, 2 * Math.PI);
cr.Fill ();
}示例5: FillChecks
void FillChecks (Context cr, int x, int y, int width, int height)
{
int CHECK_SIZE = 32;
cr.Save ();
Surface check;
using (var target = cr.GetTarget ()) {
check = target.CreateSimilar (Content.Color, 2 * CHECK_SIZE, 2 * CHECK_SIZE);
}
// draw the check
using (Context cr2 = new Context (check)) {
cr2.Operator = Operator.Source;
cr2.SetSourceRGB (0.4, 0.4, 0.4);
cr2.Rectangle (0, 0, 2 * CHECK_SIZE, 2 * CHECK_SIZE);
cr2.Fill ();
cr2.SetSourceRGB (0.7, 0.7, 0.7);
cr2.Rectangle (x, y, CHECK_SIZE, CHECK_SIZE);
cr2.Fill ();
cr2.Rectangle (x + CHECK_SIZE, y + CHECK_SIZE, CHECK_SIZE, CHECK_SIZE);
cr2.Fill ();
}
// Fill the whole surface with the check
SurfacePattern check_pattern = new SurfacePattern (check);
check_pattern.Extend = Extend.Repeat;
cr.SetSource (check_pattern);
cr.Rectangle (0, 0, width, height);
cr.Fill ();
check_pattern.Dispose ();
check.Dispose ();
cr.Restore ();
}示例6: DrawVertexStructure
public static void DrawVertexStructure(VertexStructure vs, Context cr)
{
VertexStructure head = vs;
int i = 0;
do {
cr.MoveTo (vs.v);
cr.SetSourceRGB (0, 0, 0.8);
cr.Arc (vs.v.X, vs.v.Y, 2, 0, 2 * Math.PI);
cr.Fill ();
cr.LineWidth = 1;
cr.MoveTo (vs.v);
cr.LineTo(vs.next.v);
cr.Stroke();
vs = vs.next;
//Logger.Log("Meh..." + i);
i++;
} while(!ReferenceEquals(vs,head));
}示例7: Draw
public static void Draw(Context grw, LineElement line)
{
if (line.Foregraund != null) {
grw.SetSourceRGB (
line.Foregraund.Red,
line.Foregraund.Green,
line.Foregraund.Blue);
}
grw.MoveTo(
line.Start.GeometryX,
line.Start.GeometryY);
grw.LineTo(
line.End.GeometryX,
line.End.GeometryY);
grw.Stroke();
}示例8: Draw
public static void Draw (Context grw, ArcElement arc)
{
if (arc.Foregraund != null) {
grw.SetSourceRGB (
arc.Foregraund.Red,
arc.Foregraund.Green,
arc.Foregraund.Blue);
}
grw.Arc (
arc.Center.GeometryX,
arc.Center.GeometryY,
arc.GeometryRadius,
arc.ArcStart,
arc.ArcStop);
grw.Stroke ();
}示例9: CellRendererSurface
public CellRendererSurface(int width, int height)
{
// TODO: Respect cell padding (Xpad and Ypad).
SetFixedSize (width, height);
transparent = new Cairo.ImageSurface (Cairo.Format.ARGB32, width, height);
Cairo.Color gray = new Cairo.Color (.75, .75, .75);
// Create checkerboard background
int grid_width = 4;
using (Cairo.Context g = new Cairo.Context (transparent)) {
g.SetSourceRGB (1, 1, 1);
g.Paint ();
for (int y = 0; y < height; y += grid_width)
for (int x = 0; x < width; x += grid_width)
if ((x / grid_width % 2) + (y / grid_width % 2) == 1)
g.FillRectangle (new Cairo.Rectangle (x, y, grid_width, grid_width), gray);
}
}示例10: Draw
public static void Draw(Context grw, Connector con)
{
var c = con.Selected ? AppController.Instance.Config.SelectedConnectorColor :
!con.ConnectedTo.Any() ?
con.Foregraund :
AppController.Instance.Config.ConnectedColor;
if ( c != null) {
grw.SetSourceRGB (
c.Red,
c.Green,
c.Blue);
}
grw.Arc (
con.Center.GeometryX,
con.Center.GeometryY,
con.GeometryRadius,
0, 2 * Math.PI);
grw.StrokePreserve ();
grw.Fill ();
}示例11: NewDocument
public Document NewDocument(Gdk.Size imageSize, bool transparent)
{
Document doc = CreateAndActivateDocument (null, imageSize);
doc.Workspace.CanvasSize = imageSize;
// Start with an empty white layer
Layer background = doc.AddNewLayer (Catalog.GetString ("Background"));
if (!transparent) {
using (Cairo.Context g = new Cairo.Context (background.Surface)) {
g.SetSourceRGB (1, 1, 1);
g.Paint ();
}
}
doc.Workspace.History.PushNewItem (new BaseHistoryItem (Stock.New, Catalog.GetString ("New Image")));
doc.IsDirty = false;
PintaCore.Actions.View.ZoomToWindow.Activate ();
return doc;
}示例12: removeDotsFromScreen
protected void removeDotsFromScreen()
{
//Redraw all of the grid
if (clear) {
using (Context ctx = new Context (surface)) {
//Set Background Color
ctx.SetSourceRGB (0, 0, 0);
ctx.Rectangle (0, 0, 500, 500);
ctx.Fill ();
//Draw Axis Lines
for (int i = 0; i < (int)(divisions); i++) {
float curX = Math.Abs (param_Min_x) + Math.Abs (param_Max_x);
float divCount = (500) / divisions;
divCount *= i;
curX = divCount;
//If Middle Color Green
if (i == ((int)divisions / 2)) {
R = 0;
G = 1;
B = 0;
} else {
R = 0.5F;
G = 0.5F;
B = 0.5F;
}
//Draw Vertical Lines
DrawLine (ctx, new PointD ((int)(curX), 0), new PointD ((int)(curX), 500));
//Draw Horizontal Lines
DrawLine (ctx, new PointD (0, (int)(curX)), new PointD (500, (int)(curX)));
}
}
clear = false;
dArea.QueueDraw ();
}
}示例13: DrawSingle
public void DrawSingle(Complex[] points)
{
N = points.Length;
using (Context context = new Context(Surface)) {
double min = double.PositiveInfinity, max = double.NegativeInfinity, val;
for (int i = 0; i < points.Length; i++) {
val = _valueExtractor (points [i]) * 1.2;
if(val < min) {
min = val;
}
if(val > max) {
max = val;
}
}
DrawAxes (context, min, max);
context.SetSourceRGB (0.0, 0.0, 1.0);
for (int i = 0; i < points.Length; i++) {
DrawPoint (context, i, _valueExtractor(points [i]));
}
}
DrawExpose (null, null);
}示例14: DrawHistArea
private void DrawHistArea(Context context, double xl, double yl, int i, int j, double value)
{
Color c = HistColor (value);
context.SetSourceRGB (c.R, c.G, c.B);
context.MoveTo ((int)(j * xl + 50), (int)(i * yl));
context.LineTo ((int)((j + 1) * xl + 50), (int)(i * yl));
context.LineTo ((int)((j + 1) * xl + 50), (int)((i + 1) * yl));
context.LineTo ((int)(j * xl + 50), (int)((i + 1) * yl));
context.LineTo ((int)(j * xl + 50), (int)(i * yl));
context.StrokePreserve ();
context.MoveTo ((int)((j + .5) * xl + 50), (int)((i + .5) * yl));
context.Fill ();
}示例15: DrawAxes
private void DrawAxes(Context context, double min, double max)
{
context.Rectangle(0, 0, Width, Height);
context.SetSourceRGB(Background.R, Background.G, Background.B);
context.Fill();
int y = ValueToY (0);
context.LineWidth = 1;
context.SetSourceRGB(0.0, 0.0, 0.0);
context.MoveTo (44, y);
context.LineTo (Width, y);
context.StrokePreserve();
context.MoveTo (50, 0);
context.LineTo (50, Height);
context.StrokePreserve();
KeyValuePair<double, string>[] ax = _axis.AxisSteps (min, max);
foreach (var a in ax) {
y = ValueToY (a.Key);
context.MoveTo (44, y);
context.LineTo (56, y);
context.StrokePreserve();
context.MoveTo (40, y - 1);
_axis.Text (context, a.Value, HorizontalTextAlignment.Right);
}
}