本文整理汇总了C#中Cairo.CachedDraw方法的典型用法代码示例。如果您正苦于以下问题：C# Cairo.CachedDraw方法的具体用法？C# Cairo.CachedDraw怎么用？C# Cairo.CachedDraw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的用法示例。
在下文中一共展示了Cairo.CachedDraw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: Render
public void Render (Cairo.Context context, StatusArea.RenderArg arg)
{
context.CachedDraw (surface: ref backgroundSurface,
region: arg.Allocation,
draw: (c, o) => DrawBackground (c, new Gdk.Rectangle (0, 0, arg.Allocation.Width, arg.Allocation.Height)));
if (arg.BuildAnimationOpacity > 0.001f)
DrawBuildEffect (context, arg.Allocation, arg.BuildAnimationProgress, arg.BuildAnimationOpacity);
if (arg.ErrorAnimationProgress > 0.001 && arg.ErrorAnimationProgress < .999) {
DrawErrorAnimation (context, arg);
}
DrawBorder (context, arg.Allocation);
if (arg.HoverProgress > 0.001f)
{
context.Clip ();
int x1 = arg.Allocation.X + arg.MousePosition.X - 200;
int x2 = x1 + 400;
using (Cairo.LinearGradient gradient = new LinearGradient (x1, 0, x2, 0))
{
Cairo.Color targetColor = Styles.StatusBarFill1Color;
Cairo.Color transparentColor = targetColor;
targetColor.A = .7;
transparentColor.A = 0;
targetColor.A = .7 * arg.HoverProgress;
gradient.AddColorStop (0.0, transparentColor);
gradient.AddColorStop (0.5, targetColor);
gradient.AddColorStop (1.0, transparentColor);
context.Pattern = gradient;
context.Rectangle (x1, arg.Allocation.Y, x2 - x1, arg.Allocation.Height);
context.Fill ();
}
context.ResetClip ();
} else {
context.NewPath ();
}
int progress_bar_x = arg.ChildAllocation.X;
int progress_bar_width = arg.ChildAllocation.Width;
if (arg.CurrentPixbuf != null) {
int y = arg.Allocation.Y + (arg.Allocation.Height - arg.CurrentPixbuf.Height) / 2;
Gdk.CairoHelper.SetSourcePixbuf (context, arg.CurrentPixbuf, arg.ChildAllocation.X, y);
context.Paint ();
progress_bar_x += arg.CurrentPixbuf.Width + Styles.ProgressBarOuterPadding;
progress_bar_width -= arg.CurrentPixbuf.Width + Styles.ProgressBarOuterPadding;
}
int center = arg.Allocation.Y + arg.Allocation.Height / 2;
Gdk.Rectangle progressArea = new Gdk.Rectangle (progress_bar_x, center - Styles.ProgressBarHeight / 2, progress_bar_width, Styles.ProgressBarHeight);
if (arg.ShowProgressBar || arg.ProgressBarAlpha > 0) {
DrawProgressBar (context, arg.ProgressBarFraction, progressArea, arg);
ClipProgressBar (context, progressArea);
}
int text_x = progress_bar_x + Styles.ProgressBarInnerPadding;
int text_width = progress_bar_width - (Styles.ProgressBarInnerPadding * 2);
double textTweenValue = arg.TextAnimationProgress;
if (arg.LastText != null) {
double opacity = Math.Max (0.0f, 1.0f - textTweenValue);
DrawString (arg.LastText, arg.LastTextIsMarkup, context, text_x,
center - (int)(textTweenValue * arg.Allocation.Height * 0.3), text_width, opacity, arg.Pango, arg);
}
if (arg.CurrentText != null) {
DrawString (arg.CurrentText, arg.CurrentTextIsMarkup, context, text_x,
center + (int)((1.0f - textTweenValue) * arg.Allocation.Height * 0.3), text_width, Math.Min (textTweenValue, 1.0), arg.Pango, arg);
}
if (arg.ShowProgressBar || arg.ProgressBarAlpha > 0)
context.ResetClip ();
}示例2: DrawErrorAnimation
void DrawErrorAnimation (Cairo.Context context, StatusArea.RenderArg arg)
{
const int surfaceWidth = 2000;
double opacity;
int progress;
if (arg.ErrorAnimationProgress < .5f) {
progress = (int) (arg.ErrorAnimationProgress * arg.Allocation.Width * 2.4);
opacity = 1.0d;
} else {
progress = (int) (arg.ErrorAnimationProgress * arg.Allocation.Width * 2.4);
opacity = 1.0d - (arg.ErrorAnimationProgress - .5d) * 2;
}
LayoutRoundedRectangle (context, arg.Allocation);
context.Clip ();
context.CachedDraw (surface: ref errorSurface,
position: new Gdk.Point (arg.Allocation.X - surfaceWidth + progress, arg.Allocation.Y),
size: new Gdk.Size (surfaceWidth, arg.Allocation.Height),
opacity: (float)opacity,
draw: (c, o) => {
// The smaller the pixel range of our gradient the less error there will be in it.
using (var lg = new LinearGradient (surfaceWidth - 250, 0, surfaceWidth, 0)) {
lg.AddColorStop (0.00, Styles.WithAlpha (Styles.StatusBarErrorColor, 0.15 * o));
lg.AddColorStop (0.10, Styles.WithAlpha (Styles.StatusBarErrorColor, 0.15 * o));
lg.AddColorStop (0.88, Styles.WithAlpha (Styles.StatusBarErrorColor, 0.30 * o));
lg.AddColorStop (1.00, Styles.WithAlpha (Styles.StatusBarErrorColor, 0.00 * o));
c.Pattern = lg;
c.Paint ();
}
});
context.ResetClip ();
}