| public InitScale ( double sx, double sy ) : void | ||
| sx | double | |
| sy | double | |
| Результат | void | |
static void draw (Cairo.Context gr, int width, int height)
{
int w, h;
ImageSurface image;
Matrix matrix;
SurfacePattern pattern;
gr.Scale (width, height);
gr.LineWidth = 0.04;
image = new ImageSurface ("data/e.png");
w = image.Width;
h = image.Height;
pattern = new SurfacePattern (image);
pattern.Extend = Cairo.Extend.Repeat;
gr.Translate (0.5, 0.5);
gr.Rotate (M_PI / 4);
gr.Scale (1 / Math.Sqrt (2), 1 / Math.Sqrt (2));
gr.Translate (- 0.5, - 0.5);
matrix = new Matrix ();
matrix.InitScale (w * 5.0, h * 5.0);
pattern.Matrix = matrix;
gr.Pattern = pattern;
gr.Rectangle ( new PointD (0, 0),
1.0, 1.0);
gr.Fill ();
pattern.Destroy ();
image.Destroy();
}
private Surface CreateScene (Cairo.Context window_cr, ImageSurface image, int reflect)
{
Surface surface = window_cr.Target.CreateSimilar (window_cr.Target.Content,
image.Width, image.Height + reflect);
Cairo.Context cr = new Context (surface);
cr.Save ();
cr.SetSource (image);
cr.Paint ();
cr.Rectangle (0, image.Height, image.Width, reflect);
cr.Clip ();
Matrix matrix = new Matrix ();
matrix.InitScale (1, -1);
matrix.Translate (0, -(2 * image.Height) + 1);
cr.Transform (matrix);
cr.SetSource (image);
cr.Paint ();
cr.Restore ();
Color bg_transparent = BackgroundColor;
bg_transparent.A = 0.65;
LinearGradient mask = new LinearGradient (0, image.Height, 0, image.Height + reflect);
mask.AddColorStop (0, bg_transparent);
mask.AddColorStop (1, BackgroundColor);
cr.Rectangle (0, image.Height, image.Width, reflect);
cr.Pattern = mask;
cr.Fill ();
((IDisposable)cr).Dispose ();
return surface;
}
private void imagepatternToolStripMenuItem_Click(object sender, EventArgs e)
{
lastSelected = "imagepattern";
OnPaintAction = cr =>
{
int w, h;
ImageSurface image;
Pattern pattern;
Matrix matrix = new Matrix();
image = new ImageSurface(romedalenPngData);
w = image.Width;
h = image.Height;
pattern = new SurfacePattern(image);
pattern.Extend = Extend.Repeat;
cr.Translate(128.0, 128.0);
cr.Rotate(Math.PI / 4);
cr.Scale(1 / Math.Sqrt(2), 1 / Math.Sqrt(2));
cr.Translate(-128.0, -128.0);
matrix.InitScale(w/256.0*5.0, h/256.0*5.0);
pattern.Matrix = matrix;
cr.SetSource(pattern);
cr.Rectangle(0, 0, 256.0, 256.0);
cr.Fill();
pattern.Dispose();
image.Dispose();
};
Invalidate();
}
public void imagepattern(Context cr, int width, int height)
{
Normalize (cr, width, height);
ImageSurface image = new ImageSurface ("data/romedalen.png");
int w = image.Width;
int h = image.Height;
SurfacePattern pattern = new SurfacePattern (image);
pattern.Extend = Extend.Repeat;
cr.Translate (0.5, 0.5);
cr.Rotate (Math.PI / 4);
cr.Scale (1 / Math.Sqrt (2), 1 / Math.Sqrt (2));
cr.Translate (- 0.5, - 0.5);
Matrix matrix = new Matrix ();
matrix.InitScale (w * 5.0, h * 5.0);
pattern.Matrix = matrix;
cr.Source = pattern;
cr.Rectangle (0, 0, 1.0, 1.0);
cr.Fill ();
pattern.Destroy ();
image.Destroy ();
}
private Surface CreateScene(Cairo.Context window_cr, ImageSurface image, int reflect)
{
var target = window_cr.GetTarget ();
Surface surface = target.CreateSimilar (target.Content,
image.Width, image.Height + reflect);
using (var cr = new Context (surface)) {
cr.Save ();
cr.SetSource (image);
cr.Paint ();
cr.Rectangle (0, image.Height, image.Width, reflect);
cr.Clip ();
Matrix matrix = new Matrix ();
matrix.InitScale (1, -1);
matrix.Translate (0, -(2 * image.Height) + 1);
cr.Transform (matrix);
cr.SetSource (image);
cr.Paint ();
cr.Restore ();
Color bg_transparent = BackgroundColor;
bg_transparent.A = 0.65;
using (var mask = new LinearGradient (0, image.Height, 0, image.Height + reflect)) {
mask.AddColorStop (0, bg_transparent);
mask.AddColorStop (1, BackgroundColor);
cr.Rectangle (0, image.Height, image.Width, reflect);
cr.SetSource (mask);
cr.Fill ();
}
}
return surface;
}
protected override bool OnExposeEvent (Gdk.EventExpose evnt)
{
if (evnt.Window != GdkWindow) {
return base.OnExposeEvent (evnt);
}
Cairo.Context cr = Gdk.CairoHelper.Create (evnt.Window);
if (reflect) {
CairoExtensions.PushGroup (cr);
}
cr.Operator = Operator.Over;
cr.Translate (Allocation.X + h_padding, Allocation.Y);
cr.Rectangle (0, 0, Allocation.Width - h_padding, Math.Max (2 * bar_height,
bar_height + bar_label_spacing + layout_height));
cr.Clip ();
Pattern bar = RenderBar (Allocation.Width - 2 * h_padding, bar_height);
cr.Save ();
cr.SetSource (bar);
cr.Paint ();
cr.Restore ();
if (reflect) {
cr.Save ();
cr.Rectangle (0, bar_height, Allocation.Width - h_padding, bar_height);
cr.Clip ();
Matrix matrix = new Matrix ();
matrix.InitScale (1, -1);
matrix.Translate (0, -(2 * bar_height) + 1);
cr.Transform (matrix);
cr.SetSource (bar);
LinearGradient mask = new LinearGradient (0, 0, 0, bar_height);
mask.AddColorStop (0.25, new Color (0, 0, 0, 0));
mask.AddColorStop (0.5, new Color (0, 0, 0, 0.125));
mask.AddColorStop (0.75, new Color (0, 0, 0, 0.4));
mask.AddColorStop (1.0, new Color (0, 0, 0, 0.7));
cr.Mask (mask);
mask.Dispose ();
cr.Restore ();
CairoExtensions.PopGroupToSource (cr);
cr.Paint ();
}
if (show_labels) {
cr.Translate ((reflect ? Allocation.X : -h_padding) + (Allocation.Width - layout_width) / 2,
(reflect ? Allocation.Y : 0) + bar_height + bar_label_spacing);
RenderLabels (cr);
}
bar.Dispose ();
CairoExtensions.DisposeContext (cr);
return true;
}
protected override bool OnDrawn(Cairo.Context cr)
{
if (!CairoHelper.ShouldDrawWindow (cr, Window)) {
return base.OnDrawn (cr);
}
if (reflect) {
CairoExtensions.PushGroup (cr);
}
cr.Operator = Operator.Over;
cr.Translate (h_padding, 0);
cr.Rectangle (0, 0, Allocation.Width - h_padding, Math.Max (2 * bar_height,
bar_height + bar_label_spacing + layout_height));
cr.Clip ();
Pattern bar = RenderBar (Allocation.Width - 2 * h_padding, bar_height);
cr.Save ();
cr.Source = bar;
cr.Paint ();
cr.Restore ();
if (reflect) {
cr.Save ();
cr.Rectangle (0, bar_height, Allocation.Width - h_padding, bar_height);
cr.Clip ();
Matrix matrix = new Matrix ();
matrix.InitScale (1, -1);
matrix.Translate (0, -(2 * bar_height) + 1);
cr.Transform (matrix);
cr.Pattern = bar;
LinearGradient mask = new LinearGradient (0, 0, 0, bar_height);
mask.AddColorStop (0.25, new Color (0, 0, 0, 0));
mask.AddColorStop (0.5, new Color (0, 0, 0, 0.125));
mask.AddColorStop (0.75, new Color (0, 0, 0, 0.4));
mask.AddColorStop (1.0, new Color (0, 0, 0, 0.7));
cr.Mask (mask);
mask.Destroy ();
cr.Restore ();
CairoExtensions.PopGroupToSource (cr);
cr.Paint ();
}
if (show_labels) {
cr.Translate ((reflect ? 0 : -h_padding) + (Allocation.Width - layout_width) / 2,
bar_height + bar_label_spacing);
RenderLabels (cr);
}
bar.Destroy ();
return true;
}
