public static SurfacePattern CreateImageBrush(ImageBrush brush, Size targetSize)
{
if (brush.Source == null)
{
return null;
}
// TODO: This is directly ported from Direct2D and could probably be made more
// efficient on cairo by taking advantage of the fact that cairo has Extend.None.
var image = ((BitmapImpl)brush.Source.PlatformImpl).Surface;
var imageSize = new Size(brush.Source.PixelWidth, brush.Source.PixelHeight);
var tileMode = brush.TileMode;
var sourceRect = brush.SourceRect.ToPixels(imageSize);
var destinationRect = brush.DestinationRect.ToPixels(targetSize);
var scale = brush.Stretch.CalculateScaling(destinationRect.Size, sourceRect.Size);
var translate = CalculateTranslate(brush, sourceRect, destinationRect, scale);
var intermediateSize = CalculateIntermediateSize(tileMode, targetSize, destinationRect.Size);
var intermediate = new ImageSurface (Format.ARGB32, (int)intermediateSize.Width, (int)intermediateSize.Height);
using (var context = new Context(intermediate))
{
Rect drawRect;
var transform = CalculateIntermediateTransform(
tileMode,
sourceRect,
destinationRect,
scale,
translate,
out drawRect);
context.Rectangle(drawRect.ToCairo());
context.Clip();
context.Transform(transform.ToCairo());
Gdk.CairoHelper.SetSourcePixbuf(context, image, 0, 0);
context.Rectangle(0, 0, imageSize.Width, imageSize.Height);
context.Fill();
var result = new SurfacePattern(intermediate);
if ((brush.TileMode & TileMode.FlipXY) != 0)
{
// TODO: Currently always FlipXY as that's all cairo supports natively.
// Support separate FlipX and FlipY by drawing flipped images to intermediate
// surface.
result.Extend = Extend.Reflect;
}
else
{
result.Extend = Extend.Repeat;
}
if (brush.TileMode != TileMode.None)
{
var matrix = result.Matrix;
matrix.InitTranslate(-destinationRect.X, -destinationRect.Y);
result.Matrix = matrix;
}
return result;
}
}
public static SurfacePattern CreateTileBrush(TileBrush brush, Size targetSize)
{
var helper = new TileBrushImplHelper(brush, targetSize);
if (!helper.IsValid)
return null;
using (var intermediate = new ImageSurface(Format.ARGB32, (int)helper.IntermediateSize.Width, (int)helper.IntermediateSize.Height))
using (var ctx = new RenderTarget(intermediate).CreateDrawingContext())
{
helper.DrawIntermediate(ctx);
var result = new SurfacePattern(intermediate);
if ((brush.TileMode & TileMode.FlipXY) != 0)
{
// TODO: Currently always FlipXY as that's all cairo supports natively.
// Support separate FlipX and FlipY by drawing flipped images to intermediate
// surface.
result.Extend = Extend.Reflect;
}
else
{
result.Extend = Extend.Repeat;
}
if (brush.TileMode != TileMode.None)
{
var matrix = result.Matrix;
matrix.InitTranslate(-helper.DestinationRect.X, -helper.DestinationRect.Y);
result.Matrix = matrix;
}
return result;
}
}
public ImageInfo (ImageInfo info, Gdk.Rectangle allocation)
{
#if false
Surface = new ImageSurface (Format.RGB24,
allocation.Width,
allocation.Height);
Context ctx = new Context (Surface);
#else
Console.WriteLine ("source status = {0}", info.Surface.Status);
Surface = info.Surface.CreateSimilar (Content.Color,
allocation.Width,
allocation.Height);
System.Console.WriteLine ("status = {1} pointer = {0}", Surface.Handle.ToString (), Surface.Status);
Context ctx = new Context (Surface);
#endif
Bounds = allocation;
ctx.Matrix = info.Fill (allocation);
Pattern p = new SurfacePattern (info.Surface);
ctx.Source = p;
ctx.Paint ();
((IDisposable)ctx).Dispose ();
p.Destroy ();
}
public bool Convert (FilterRequest req)
{
string source = req.Current.LocalPath;
Uri dest = req.TempUri (Path.GetExtension (source));
using (ImageFile img = ImageFile.Create (source)) {
using (Pixbuf pixbuf = img.Load ()) {
using (ImageInfo info = new ImageInfo (pixbuf)) {
MemorySurface surface = new MemorySurface (Format.Argb32,
pixbuf.Width,
pixbuf.Height);
Context ctx = new Context (surface);
ctx.Matrix = info.Fill (info.Bounds, angle);
Pattern p = new SurfacePattern (info.Surface);
ctx.Source = p;
ctx.Paint ();
((IDisposable)ctx).Dispose ();
p.Destroy ();
using (Pixbuf result = CairoUtils.CreatePixbuf (surface)) {
using (Stream output = File.OpenWrite (dest.LocalPath)) {
img.Save (result, output);
}
}
surface.Flush ();
info.Dispose ();
req.Current = dest;
return true;
}
}
}
}
void FillChecks (Context cr, int x, int y, int width, int height)
{
int CHECK_SIZE = 32;
cr.Save ();
Surface check = cr.Target.CreateSimilar (Content.Color, 2 * CHECK_SIZE, 2 * CHECK_SIZE);
// draw the check
using (Context cr2 = new Context (check)) {
cr2.Operator = Operator.Source;
cr2.Color = new Color (0.4, 0.4, 0.4);
cr2.Rectangle (0, 0, 2 * CHECK_SIZE, 2 * CHECK_SIZE);
cr2.Fill ();
cr2.Color = new Color (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.Source = check_pattern;
cr.Rectangle (0, 0, width, height);
cr.Fill ();
check_pattern.Destroy ();
check.Destroy ();
cr.Restore ();
}
public ImageInfo(ImageInfo info, Widget w, Gdk.Rectangle bounds)
{
Cairo.Surface similar = CairoUtils.CreateSurface (w.GdkWindow);
Bounds = bounds;
Surface = similar.CreateSimilar (Content.ColorAlpha, Bounds.Width, Bounds.Height);
Context ctx = new Context (Surface);
ctx.Matrix = info.Fill (Bounds);
Pattern p = new SurfacePattern (info.Surface);
ctx.Source = p;
ctx.Paint ();
((IDisposable)ctx).Dispose ();
p.Destroy ();
}
public bool OnExpose (Context ctx, Gdk.Rectangle allocation)
{
if (frames == 0)
start = DateTime.UtcNow;
frames ++;
TimeSpan elapsed = DateTime.UtcNow - start;
double fraction = elapsed.Ticks / (double) duration.Ticks;
double opacity = Math.Sin (Math.Min (fraction, 1.0) * Math.PI * 0.5);
ctx.Operator = Operator.Source;
SurfacePattern p = new SurfacePattern (begin_buffer.Surface);
ctx.Matrix = begin_buffer.Fill (allocation);
p.Filter = Filter.Fast;
ctx.Source = p;
ctx.Paint ();
ctx.Operator = Operator.Over;
ctx.Matrix = end_buffer.Fill (allocation);
SurfacePattern sur = new SurfacePattern (end_buffer.Surface);
#if MONO_1_2_5
Pattern black = new SolidPattern (new Cairo.Color (0.0, 0.0, 0.0, opacity));
#else
Pattern black = new SolidPattern (new Cairo.Color (0.0, 0.0, 0.0, opacity), true);
#endif
//ctx.Source = black;
//ctx.Fill ();
sur.Filter = Filter.Fast;
ctx.Source = sur;
ctx.Mask (black);
//ctx.Paint ();
ctx.Matrix = new Matrix ();
ctx.MoveTo (allocation.Width / 2.0, allocation.Height / 2.0);
ctx.Source = new SolidPattern (1.0, 0, 0);
#if debug
ctx.ShowText (String.Format ("{0} {1} {2} {3} {4} {5} {6} {7}",
frames,
sur.Status,
p.Status,
opacity, fraction, elapsed, start, DateTime.UtcNow));
#endif
sur.Destroy ();
p.Destroy ();
return fraction < 1.0;
}
public bool OnExpose(Context ctx, Gdk.Rectangle allocation)
{
ctx.Operator = Operator.Source;
SurfacePattern p = new SurfacePattern (info.Surface);
p.Filter = Filter.Fast;
Matrix m = info.Fill (allocation, angle);
ctx.Matrix = m;
ctx.Source = p;
ctx.Paint ();
p.Destroy ();
return true;
}
public static void SetSourceDrawable (Context ctx, Gdk.Drawable d, double x, double y)
{
try {
gdk_cairo_set_source_pixmap (ctx.Handle, d.Handle, x, y);
} catch (EntryPointNotFoundException) {
int width, height;
d.GetSize (out width, out height);
XlibSurface surface = new XlibSurface (GdkUtils.GetXDisplay (d.Display),
(IntPtr)GdkUtils.GetXid (d),
GdkUtils.GetXVisual (d.Visual),
width, height);
SurfacePattern p = new SurfacePattern (surface);
Matrix m = new Matrix ();
m.Translate (-x, -y);
p.Matrix = m;
ctx.Source = p;
}
}
private Pixbuf ProcessImpl (Pixbuf input, Cms.Profile input_profile, bool fast) {
Pixbuf result;
using (ImageInfo info = new ImageInfo (input)) {
MemorySurface surface = new MemorySurface (Format.Argb32,
input.Width,
input.Height);
Context ctx = new Context (surface);
ctx.Matrix = info.Fill (info.Bounds, angle);
SurfacePattern p = new SurfacePattern (info.Surface);
if (fast) {
p.Filter = Filter.Fast;
}
ctx.Source = p;
ctx.Paint ();
((IDisposable)ctx).Dispose ();
p.Destroy ();
result = MemorySurface.CreatePixbuf (surface);
surface.Flush ();
}
return result;
}
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 ImageInfo CreateBlur(ImageInfo source)
{
double scale = Math.Max (256 / (double) source.Bounds.Width,
256 / (double) source.Bounds.Height);
Gdk.Rectangle small = new Gdk.Rectangle (0, 0,
(int) Math.Ceiling (source.Bounds.Width * scale),
(int) Math.Ceiling (source.Bounds.Height * scale));
ImageSurface image = new ImageSurface (Format.Argb32,
small.Width,
small.Height);
Context ctx = new Context (image);
ctx.Matrix = source.Fit (small);
ctx.Operator = Operator.Source;
Pattern p = new SurfacePattern (source.Surface);
ctx.Source = p;
ctx.Paint ();
p.Destroy ();
((IDisposable)ctx).Dispose ();
Gdk.Pixbuf normal = image.ToPixbuf();
Gdk.Pixbuf blur = PixbufUtils.Blur (normal, 3, null);
ImageInfo overlay = new ImageInfo (blur);
blur.Dispose ();
normal.Dispose ();
image.Destroy ();
return overlay;
}
public static SurfacePattern CreateVisualBrush(VisualBrush brush, Size targetSize)
{
var visual = brush.Visual;
if (visual == null)
{
return null;
}
var layoutable = visual as ILayoutable;
if (layoutable?.IsArrangeValid == false)
{
layoutable.Measure(Size.Infinity);
layoutable.Arrange(new Rect(layoutable.DesiredSize));
}
// TODO: This is directly ported from Direct2D and could probably be made more
// efficient on cairo by taking advantage of the fact that cairo has Extend.None.
var tileMode = brush.TileMode;
var sourceRect = brush.SourceRect.ToPixels(layoutable.Bounds.Size);
var destinationRect = brush.DestinationRect.ToPixels(targetSize);
var scale = brush.Stretch.CalculateScaling(destinationRect.Size, sourceRect.Size);
var translate = CalculateTranslate(brush, sourceRect, destinationRect, scale);
var intermediateSize = CalculateIntermediateSize(tileMode, targetSize, destinationRect.Size);
using (var intermediate = new ImageSurface(Format.ARGB32, (int)intermediateSize.Width, (int)intermediateSize.Height))
using (var context = new Context(intermediate))
{
Rect drawRect;
var transform = CalculateIntermediateTransform(
tileMode,
sourceRect,
destinationRect,
scale,
translate,
out drawRect);
var renderer = new Renderer(intermediate);
context.Rectangle(drawRect.ToCairo());
context.Clip();
context.Transform(transform.ToCairo());
renderer.Render(visual, new PlatformHandle(IntPtr.Zero, "RTB"), transform, drawRect);
var result = new SurfacePattern(intermediate);
if ((brush.TileMode & TileMode.FlipXY) != 0)
{
// TODO: Currently always FlipXY as that's all cairo supports natively.
// Support separate FlipX and FlipY by drawing flipped images to intermediate
// surface.
result.Extend = Extend.Reflect;
}
else
{
result.Extend = Extend.Repeat;
}
if (brush.TileMode != TileMode.None)
{
var matrix = result.Matrix;
matrix.InitTranslate(-destinationRect.X, -destinationRect.Y);
result.Matrix = matrix;
}
return result;
}
}
public void Apply(Context ctx, Gdk.Rectangle allocation)
{
SurfacePattern p = new SurfacePattern (info.Surface);
ctx.Matrix = new Matrix ();
Matrix m = info.Fit (allocation);
ctx.Operator = Operator.Over;
ctx.Matrix = m;
ctx.Source = p;
ctx.Paint ();
SurfacePattern overlay = new SurfacePattern (blur.Surface);
ctx.Matrix = new Matrix ();
ctx.Matrix = blur.Fit (allocation);
ctx.Operator = Operator.Over;
ctx.Source = overlay;
// FIXME ouch this is ugly.
if (mask == null)
Radius = Radius;
//ctx.Paint ();
ctx.Mask (mask);
overlay.Destroy ();
p.Destroy ();
}
ImageInfo CreateBlur(ImageInfo source)
{
double scale = Math.Max (256 / (double)source.Bounds.Width,
256 / (double)source.Bounds.Height);
var small = new Gdk.Rectangle (0, 0,
(int)Math.Ceiling (source.Bounds.Width * scale),
(int)Math.Ceiling (source.Bounds.Height * scale));
var image = new ImageSurface (Format.Argb32,
small.Width,
small.Height);
var ctx = new Context (image);
ctx.Matrix = source.Fit (small);
ctx.Operator = Operator.Source;
Pattern p = new SurfacePattern (source.Surface);
ctx.SetSource (p);
ctx.Paint ();
p.Dispose ();
ctx.Dispose ();
ImageInfo overlay = null;
using (var normal = image.ToPixbuf ())
{
using (var pixbufBlur = PixbufUtils.Blur (normal, 3, null))
{
overlay = new ImageInfo (pixbufBlur);
}
}
image.Dispose ();
return overlay;
}
public void Apply(Context ctx, Gdk.Rectangle allocation)
{
var p = new SurfacePattern (info.Surface);
ctx.Matrix = new Matrix ();
Matrix m = info.Fit (allocation);
ctx.Operator = Operator.Over;
ctx.Matrix = m;
ctx.SetSource (p);
ctx.Paint ();
var overlay = new SurfacePattern (blur.Surface);
ctx.Matrix = new Matrix ();
ctx.Matrix = blur.Fit (allocation);
ctx.Operator = Operator.Over;
ctx.SetSource (overlay);
// FIXME ouch this is ugly.
if (mask == null)
Radius = Radius;
//ctx.Paint ();
ctx.Mask (mask);
overlay.Dispose ();
p.Dispose ();
}
/** ASYNC */
public static ImageSurface ScaleDownSurface(ImageSurface s, uint size)
{
double scale = (double)size / (double)Math.Max(s.Width, s.Height);
int nw = Math.Max(1, (int)(s.Width * scale));
int nh = Math.Max(1, (int)(s.Height * scale));
ImageSurface rv = new ImageSurface (Format.ARGB32, nw, nh);
using (Context cr = new Context(rv)) {
using (SurfacePattern p = new SurfacePattern(s)) {
cr.Rectangle (0,0, rv.Width, rv.Height);
cr.Scale (scale, scale);
cr.Pattern = p;
cr.Fill ();
}
}
return rv;
}
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();
}
void CairoSetPattern(Context cr, DColor color, double alpha, DFillStyle fillStyle)
{
switch (fillStyle)
{
case DFillStyle.ForwardDiagonalHatch:
Surface patSurf = cr.Target.CreateSimilar(Content.ColorAlpha, 7, 7);
Context patCr = new Context(patSurf);
patCr.SetSource(MakeColor(color, alpha));
patCr.LineWidth = 1;
patCr.MoveTo(0, 0);
patCr.LineTo(7, 7);
patCr.Stroke();
SurfacePattern pat = new SurfacePattern(patSurf);
pat.Extend = Extend.Repeat;
cr.SetSource(pat);
((IDisposable)patCr).Dispose();
((IDisposable)patSurf).Dispose();
break;
default:
cr.SetSource(MakeColor(color, alpha));
break;
}
}
private Pixbuf ProcessImpl(Pixbuf input, Cms.Profile input_profile, bool fast)
{
Pixbuf result;
using (ImageInfo info = new ImageInfo (input)) {
using (ImageSurface surface = new ImageSurface (Format.Argb32,
input.Width,
input.Height)) {
using (Context ctx = new Context (surface)) {
ctx.Matrix = info.Fill (info.Bounds, angle);
using (SurfacePattern p = new SurfacePattern (info.Surface)) {
if (fast)
p.Filter = Filter.Fast;
ctx.Source = p;
ctx.Paint ();
}
result = surface.ToPixbuf();
surface.Flush ();
}
}
}
return result;
}
public ImageInfo(ImageInfo info, Gdk.Rectangle allocation)
{
Surface = info.Surface.CreateSimilar (Content.Color,
allocation.Width,
allocation.Height);
var ctx = new Context (Surface);
Bounds = allocation;
ctx.Matrix = info.Fill (allocation);
Pattern p = new SurfacePattern (info.Surface);
ctx.SetSource (p);
ctx.Paint ();
ctx.Dispose ();
p.Dispose ();
}
public void drawImage(string path, params double[] args)
{
double sx = 0
, sy = 0
, sw = 0
, sh = 0
, dx, dy, dw, dh;
switch (args.Length)
{
// img, sx, sy, sw, sh, dx, dy, dw, dh
case 8:
sx = args[0];
sy = args[1];
sw = args[2];
sh = args[3];
dx = args[4];
dy = args[5];
dw = args[6];
dh = args[7];
break;
// img, dx, dy, dw, dh
case 4:
dx = args[0];
dy = args[1];
dw = args[2];
dh = args[3];
break;
// img, dx, dy
case 2:
dx = args[0];
dy = args[1];
dw = sw;
dh = sh;
break;
default:
throw new ArgumentException();
}
using (var imgSurface = new ImageSurface(path))
{
sw = imgSurface.Width;
sh = imgSurface.Height;
// Start draw
canvas.Context.Save();
this.savePath();
canvas.Context.Rectangle(dx, dy, dw, dh);
canvas.Context.Clip();
this.restorePath();
if (dw != sw || dh != sh)
{
double fx = (double)dw / sw;
double fy = (double)dh / sh;
//scale
canvas.Context.Scale(fx, fy);
dx = dx / fx;
dy = dy / fy;
}
using (var pattern = new SurfacePattern(canvas.Surface))
{
pattern.Filter = state.patternQuality;
canvas.Context.Pattern = pattern;
canvas.Context.SetSource(imgSurface, dx - sx, dy - sy);
canvas.Context.PaintWithAlpha(state.globalAlpha);
}
canvas.Context.Restore();
}
}
public bool OnExpose(Context ctx, Gdk.Rectangle viewport)
{
double percent = Math.Min ((DateTime.UtcNow - start).Ticks / (double) duration.Ticks, 1.0);
//Matrix m = info.Fill (allocation);
Matrix m = new Matrix ();
m.Translate (pan_x, pan_y);
m.Scale (zoom, zoom);
ctx.Matrix = m;
SurfacePattern p = new SurfacePattern (info.Surface);
ctx.Source = p;
ctx.Paint ();
p.Destroy ();
return percent < 1.0;
}
private void OnExpose(Context ctx, Region region)
{
SetClip (ctx, region);
if (Transition != null) {
bool done = false;
foreach (Gdk.Rectangle area in GetRectangles (region)) {
BlockProcessor proc = new BlockProcessor (area, block_size);
Gdk.Rectangle subarea;
while (proc.Step (out subarea)) {
ctx.Save ();
SetClip (ctx, subarea);
done = ! Transition.OnExpose (ctx, Allocation);
ctx.Restore ();
}
}
if (done) {
System.Console.WriteLine ("frames = {0}", Transition.Frames);
Transition = null;
}
} else {
ctx.Operator = Operator.Source;
SurfacePattern p = new SurfacePattern (current.Surface);
p.Filter = Filter.Fast;
SetClip (ctx, region);
ctx.Matrix = current.Fill (Allocation);
ctx.Source = p;
ctx.Paint ();
p.Destroy ();
}
}
protected override bool OnExposeEvent(EventExpose args)
{
bool double_buffer = false;
base.OnExposeEvent (args);
Context ctx = Gdk.CairoHelper.Create (GdkWindow);
if (double_buffer) {
ImageSurface cim = new ImageSurface (Format.RGB24,
Allocation.Width,
Allocation.Height);
Context buffer = new Context (cim);
OnExpose (buffer, args.Region);
SurfacePattern sur = new SurfacePattern (cim);
sur.Filter = Filter.Fast;
ctx.Source = sur;
SetClip (ctx, args.Region);
ctx.Paint ();
((IDisposable)buffer).Dispose ();
((IDisposable)cim).Dispose ();
sur.Destroy ();
} else {
OnExpose (ctx, args.Region);
}
((IDisposable)ctx).Dispose ();
return true;
}
public bool OnExpose(Context ctx, Gdk.Rectangle allocation)
{
ctx.Operator = Operator.Source;
SurfacePattern p = new SurfacePattern (begin_buffer.Surface);
ctx.Matrix = begin_buffer.Fill (allocation);
p.Filter = Filter.Fast;
ctx.Source = p;
ctx.Paint ();
ctx.Operator = Operator.Over;
ctx.Matrix = end_buffer.Fill (allocation);
SurfacePattern sur = new SurfacePattern (end_buffer.Surface);
sur.Filter = Filter.Fast;
ctx.Source = sur;
Pattern mask = CreateMask (allocation, fraction);
ctx.Mask (mask);
mask.Destroy ();
p.Destroy ();
sur.Destroy ();
return fraction < 1.0;
}
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 ();
}
public bool OnExpose(Context ctx, Gdk.Rectangle allocation)
{
ctx.Operator = Operator.Source;
ctx.Matrix = end_buffer.Fill (allocation);
SurfacePattern sur = new SurfacePattern (end_buffer.Surface);
ctx.Source = sur;
ctx.Paint ();
sur.Destroy ();
ctx.Operator = Operator.Over;
SurfacePattern p = new SurfacePattern (begin_buffer.Surface);
Matrix m = begin_buffer.Fill (allocation);
m.Translate (Math.Round (- allocation.Width * fraction), 0);
ctx.Matrix = m;
p.Filter = Filter.Fast;
ctx.Source = p;
ctx.Paint ();
p.Destroy ();
return fraction < 1.0;
}
public bool OnExpose(Context ctx, Gdk.Rectangle viewport)
{
double percent = Math.Min ((DateTime.UtcNow - start).Ticks / (double) duration.Ticks, 1.0);
frames ++;
//ctx.Matrix = m;
SurfacePattern p = new SurfacePattern (buffer.Surface);
p.Filter = Filter.Fast;
Matrix m = new Matrix ();
m.Translate (pan_x * zoom, pan_y * zoom);
m.Scale (zoom, zoom);
zoom *= .98;
p.Matrix = m;
ctx.Source = p;
ctx.Paint ();
p.Destroy ();
return percent < 1.0;
}
public ImageInfo(ImageInfo info, Widget w, Gdk.Rectangle bounds)
{
using (var similar = CairoUtils.CreateSurface (w.GdkWindow)) {
Bounds = bounds;
Surface = similar.CreateSimilar (Content.ColorAlpha, Bounds.Width, Bounds.Height);
var ctx = new Context (Surface);
ctx.Matrix = info.Fill (Bounds);
Pattern p = new SurfacePattern (info.Surface);
ctx.SetSource (p);
ctx.Paint ();
ctx.Dispose ();
p.Dispose ();
}
}