public IrregularSurface(Cairo.ImageSurface source, Rectangle[] roi) { this.placedSurfaces = new List<PlacedSurface> (roi.Length); foreach (Rectangle rect in roi) { Rectangle ri = Rectangle.Intersect (source.GetBounds (), rect); if (!ri.IsEmpty) this.placedSurfaces.Add (new PlacedSurface (source, ri)); } this.region = Utility.RectanglesToRegion (roi); this.region.Intersect (Region.Rectangle (source.GetBounds ())); }
/// <summary> /// Constructs an IrregularSurface by copying the given region-of-interest from an Image. /// </summary> /// <param name="source">The Surface to copy pixels from.</param> /// <param name="roi">Defines the Region from which to copy pixels from the Image.</param> public IrregularSurface(Cairo.ImageSurface source, Region roi) { Region roiClipped = (Region)roi.Copy (); roiClipped.Intersect (Region.Rectangle (source.GetBounds ())); Rectangle[] rects = roiClipped.GetRectangles (); this.placedSurfaces = new List<PlacedSurface> (rects.Length); foreach (Rectangle rect in rects) this.placedSurfaces.Add (new PlacedSurface (source, rect)); this.region = roiClipped; }
/// <summary> /// Provides a default implementation for performing dst = F(lhs, rhs) over some rectangle of interest. /// </summary> /// <param name="dst">The Surface to write pixels to.</param> /// <param name="dstOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the dst Surface.</param> /// <param name="lhs">The Surface to read pixels from for the lhs parameter given to the method <b>ColorBgra Apply(ColorBgra, ColorBgra)</b>.</param> /// <param name="lhsOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the lhs Surface.</param> /// <param name="rhs">The Surface to read pixels from for the rhs parameter given to the method <b>ColorBgra Apply(ColorBgra, ColorBgra)</b></param> /// <param name="rhsOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the rhs Surface.</param> /// <param name="roiSize">The size of the rectangles-of-interest for all Surfaces.</param> public void Apply (Cairo.ImageSurface dst, Point dstOffset, Cairo.ImageSurface lhs, Point lhsOffset, Cairo.ImageSurface rhs, Point rhsOffset, Size roiSize) { // Bounds checking only enabled in Debug builds. #if DEBUG // Create bounding rectangles for each Surface Rectangle dstRect = new Rectangle (dstOffset, roiSize); Rectangle lhsRect = new Rectangle (lhsOffset, roiSize); Rectangle rhsRect = new Rectangle (rhsOffset, roiSize); // Clip those rectangles to those Surface's bounding rectangles Rectangle dstClip = Rectangle.Intersect (dstRect, dst.GetBounds ()); Rectangle lhsClip = Rectangle.Intersect (lhsRect, lhs.GetBounds ()); Rectangle rhsClip = Rectangle.Intersect (rhsRect, rhs.GetBounds ()); // If any of those Rectangles actually got clipped, then throw an exception if (dstRect != dstClip) { throw new ArgumentOutOfRangeException ("roiSize", "Destination roi out of bounds"); } if (lhsRect != lhsClip) { throw new ArgumentOutOfRangeException ("roiSize", "lhs roi out of bounds"); } if (rhsRect != rhsClip) { throw new ArgumentOutOfRangeException ("roiSize", "rhs roi out of bounds"); } #endif // Cache the width and height properties int width = roiSize.Width; int height = roiSize.Height; // Do the work. unsafe { for (int row = 0; row < height; ++row) { ColorBgra* dstPtr = dst.GetPointAddress (dstOffset.X, dstOffset.Y + row); ColorBgra* lhsPtr = lhs.GetPointAddress (lhsOffset.X, lhsOffset.Y + row); ColorBgra* rhsPtr = rhs.GetPointAddress (rhsOffset.X, rhsOffset.Y + row); Apply (dstPtr, lhsPtr, rhsPtr, width); } } }
public void Render (List<Layer> layers, Cairo.ImageSurface dst, Gdk.Point offset) { dst.Flush (); // Our rectangle of interest var r = new Gdk.Rectangle (offset, dst.GetBounds ().Size).ToCairoRectangle (); using (var g = new Cairo.Context (dst)) { // Create the transparent checkerboard background g.Translate (-offset.X, -offset.Y); g.FillRectangle (r, tranparent_pattern, new Cairo.PointD (offset.X, offset.Y)); for (var i = 0; i < layers.Count; i++) { var layer = layers[i]; // If we're in LivePreview, substitute current layer with the preview layer if (layer == PintaCore.Layers.CurrentLayer && PintaCore.LivePreview.IsEnabled) layer = CreateLivePreviewLayer (layer); // If the layer is offset, handle it here if (!layer.Transform.IsIdentity ()) layer = CreateOffsetLayer (layer); // No need to resize the surface if we're at 100% zoom if (scale_factor.Ratio == 1) layer.Draw (g, layer.Surface, layer.Opacity, false); else { using (var scaled = new Cairo.ImageSurface (Cairo.Format.Argb32, dst.Width, dst.Height)) { g.Save (); // Have to undo the translate set above g.Translate (offset.X, offset.Y); CopyScaled (layer.Surface, scaled, r.ToGdkRectangle ()); layer.Draw (g, scaled, layer.Opacity, false); g.Restore (); } } } } // If we are at least 200% and grid is requested, draw it if (enable_pixel_grid && PintaCore.Actions.View.PixelGrid.Active && scale_factor.Ratio <= 0.5d) RenderPixelGrid (dst, offset); dst.MarkDirty (); }
private unsafe void RenderOneToOne(List<Layer> layers, Cairo.ImageSurface dst, Gdk.Point offset) { // The first layer should be blended with the transparent checkerboard var checker = true; CheckerBoardOperation checker_op = null; for (int i = 0; i < layers.Count; i++) { var layer = layers[i]; // If we're in LivePreview, substitute current layer with the preview layer if (layer == PintaCore.Layers.CurrentLayer && PintaCore.LivePreview.IsEnabled) layer = CreateLivePreviewLayer (layer); // If the layer is offset, handle it here if (!layer.Transform.IsIdentity ()) layer = CreateOffsetLayer (layer); var src = layer.Surface; // Get the blend mode for this layer and opacity var blend_op = UserBlendOps.GetBlendOp (layer.BlendMode, layer.Opacity); if (checker) checker_op = new CheckerBoardOperation (layer.Opacity); // Figure out where our source and destination intersect var srcRect = new Gdk.Rectangle (offset, dst.GetBounds ().Size); srcRect.Intersect (src.GetBounds ()); // Get pointers to our surfaces var src_ptr = (ColorBgra*)src.DataPtr; var dst_ptr = (ColorBgra*)dst.DataPtr; // Cache widths int src_width = src.Width; int dst_width = dst.Width; for (int dstRow = 0; dstRow < srcRect.Height; ++dstRow) { ColorBgra* dstRowPtr = dst.GetRowAddressUnchecked (dst_ptr, dst_width, dstRow); ColorBgra* srcRowPtr = src.GetPointAddressUnchecked (src_ptr, src_width, offset.X, dstRow + offset.Y); int dstCol = offset.X; int dstColEnd = offset.X + srcRect.Width; int checkerY = dstRow + offset.Y; while (dstCol < dstColEnd) { // Blend it over the checkerboard background if (checker) *dstRowPtr = checker_op.Apply (*srcRowPtr, dstCol, checkerY); else *dstRowPtr = blend_op.Apply (*dstRowPtr, *srcRowPtr); ++dstRowPtr; ++srcRowPtr; ++dstCol; } } // Only checker the first layer checker = false; } }
private unsafe void RenderZoomOut(Cairo.ImageSurface src, Cairo.ImageSurface dst, Gdk.Point offset, Gdk.Size destinationSize, bool checker) { const int fpShift = 12; const int fpFactor = (1 << fpShift); Gdk.Size sourceSize = src.GetBounds ().Size; long fDstLeftLong = ((long)offset.X * fpFactor * (long)sourceSize.Width) / (long)destinationSize.Width; long fDstTopLong = ((long)offset.Y * fpFactor * (long)sourceSize.Height) / (long)destinationSize.Height; long fDstRightLong = ((long)(offset.X + dst.Width) * fpFactor * (long)sourceSize.Width) / (long)destinationSize.Width; long fDstBottomLong = ((long)(offset.Y + dst.Height) * fpFactor * (long)sourceSize.Height) / (long)destinationSize.Height; int fDstLeft = (int)fDstLeftLong; int fDstTop = (int)fDstTopLong; int fDstRight = (int)fDstRightLong; int fDstBottom = (int)fDstBottomLong; int dx = (fDstRight - fDstLeft) / dst.Width; int dy = (fDstBottom - fDstTop) / dst.Height; ColorBgra* src_ptr = (ColorBgra*)src.DataPtr; ColorBgra* dst_ptr = (ColorBgra*)dst.DataPtr; int src_width = src.Width; int dst_width = dst.Width; for (int dstRow = 0, fDstY = fDstTop; dstRow < dst.Height && fDstY < fDstBottom; ++dstRow, fDstY += dy) { int srcY1 = fDstY >> fpShift; // y int srcY2 = (fDstY + (dy >> 2)) >> fpShift; // y + 0.25 int srcY3 = (fDstY + (dy >> 1)) >> fpShift; // y + 0.50 int srcY4 = (fDstY + (dy >> 1) + (dy >> 2)) >> fpShift; // y + 0.75 ColorBgra* src1 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY1); ColorBgra* src2 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY2); ColorBgra* src3 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY3); ColorBgra* src4 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY4); ColorBgra* dstPtr = dst.GetRowAddressUnchecked (dst_ptr, dst_width, dstRow); int checkerY = dstRow + offset.Y; int checkerX = offset.X; int maxCheckerX = checkerX + dst.Width; for (int fDstX = fDstLeft; checkerX < maxCheckerX && fDstX < fDstRight; ++checkerX, fDstX += dx) { int srcX1 = (fDstX + (dx >> 2)) >> fpShift; // x + 0.25 int srcX2 = (fDstX + (dx >> 1) + (dx >> 2)) >> fpShift; // x + 0.75 int srcX3 = fDstX >> fpShift; // x int srcX4 = (fDstX + (dx >> 1)) >> fpShift; // x + 0.50 ColorBgra* p1 = src1 + srcX1; ColorBgra* p2 = src2 + srcX2; ColorBgra* p3 = src3 + srcX3; ColorBgra* p4 = src4 + srcX4; int r = (2 + p1->R + p2->R + p3->R + p4->R) >> 2; int g = (2 + p1->G + p2->G + p3->G + p4->G) >> 2; int b = (2 + p1->B + p2->B + p3->B + p4->B) >> 2; int a = (2 + p1->A + p2->A + p3->A + p4->A) >> 2; if (checker) { // Blend it over the checkerboard background int v = ((checkerX ^ checkerY) & 8) * 8 + 191; a = a + (a >> 7); int vmia = v * (256 - a); r = ((r * a) + vmia) >> 8; g = ((g * a) + vmia) >> 8; b = ((b * a) + vmia) >> 8; dstPtr->Bgra = (uint)b + ((uint)g << 8) + ((uint)r << 16) + 0xff000000; } else { dstPtr->Bgra = (uint)b + ((uint)g << 8) + ((uint)r << 16) + ((uint)a << 24); } ++dstPtr; } } }
private unsafe void RenderOneToOne(Cairo.ImageSurface src, Cairo.ImageSurface dst, Gdk.Point offset, bool checker) { Gdk.Rectangle srcRect = new Gdk.Rectangle (offset, dst.GetBounds ().Size); srcRect.Intersect (src.GetBounds ()); ColorBgra* src_ptr = (ColorBgra*)src.DataPtr; ColorBgra* dst_ptr = (ColorBgra*)dst.DataPtr; int src_width = src.Width; int dst_width = dst.Width; int dst_height = dst.Height; for (int dstRow = 0; dstRow < srcRect.Height; ++dstRow) { ColorBgra* dstRowPtr = dst.GetRowAddressUnchecked (dst_ptr, dst_width, dstRow); ColorBgra* srcRowPtr = src.GetPointAddressUnchecked (src_ptr, src_width, offset.X, dstRow + offset.Y); int dstCol = offset.X; int dstColEnd = offset.X + srcRect.Width; int checkerY = dstRow + offset.Y; while (dstCol < dstColEnd) { // Blend it over the checkerboard background if (checker) { int b = srcRowPtr->B; int g = srcRowPtr->G; int r = srcRowPtr->R; int a = srcRowPtr->A; int v = (((dstCol ^ checkerY) & 8) << 3) + 191; a = a + (a >> 7); int vmia = v * (256 - a); r = ((r * a) + vmia) >> 8; g = ((g * a) + vmia) >> 8; b = ((b * a) + vmia) >> 8; dstRowPtr->Bgra = (uint)b + ((uint)g << 8) + ((uint)r << 16) + ((uint)255 << 24); } else { *dstRowPtr = *srcRowPtr; } ++dstRowPtr; ++srcRowPtr; ++dstCol; } } }
private unsafe void CopyScaledZoomOut (Cairo.ImageSurface src, Cairo.ImageSurface dst, Rectangle roi) { // Tell Cairo we need the latest raw data dst.Flush (); const int fpShift = 12; const int fpFactor = (1 << fpShift); var source_size = src.GetBounds ().Size; // Find destination bounds var dst_left = (int)(((long)roi.X * fpFactor * (long)source_size.Width) / (long)destination_size.Width); var dst_top = (int)(((long)roi.Y * fpFactor * (long)source_size.Height) / (long)destination_size.Height); var dst_right = (int)(((long)(roi.X + dst.Width) * fpFactor * (long)source_size.Width) / (long)destination_size.Width); var dst_bottom = (int)(((long)(roi.Y + dst.Height) * fpFactor * (long)source_size.Height) / (long)destination_size.Height); var dx = (dst_right - dst_left) / dst.Width; var dy = (dst_bottom - dst_top) / dst.Height; // Cache pointers to surface raw data and sizes var src_ptr = (ColorBgra*)src.DataPtr; var dst_ptr = (ColorBgra*)dst.DataPtr; var src_width = src.Width; var dst_width = dst.Width; var dst_height = dst.Height; for (int dstRow = 0, fDstY = dst_top; dstRow < dst_height && fDstY < dst_bottom; ++dstRow, fDstY += dy) { var srcY1 = fDstY >> fpShift; // y var srcY2 = (fDstY + (dy >> 2)) >> fpShift; // y + 0.25 var srcY3 = (fDstY + (dy >> 1)) >> fpShift; // y + 0.50 var srcY4 = (fDstY + (dy >> 1) + (dy >> 2)) >> fpShift; // y + 0.75 var src1 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY1); var src2 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY2); var src3 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY3); var src4 = src.GetRowAddressUnchecked (src_ptr, src_width, srcY4); var dstPtr = dst.GetRowAddressUnchecked (dst_ptr, dst_width, dstRow); var checkerY = dstRow + roi.Y; var checkerX = roi.X; var maxCheckerX = checkerX + dst.Width; for (var fDstX = dst_left; checkerX < maxCheckerX && fDstX < dst_right; ++checkerX, fDstX += dx) { var srcX1 = (fDstX + (dx >> 2)) >> fpShift; // x + 0.25 var srcX2 = (fDstX + (dx >> 1) + (dx >> 2)) >> fpShift; // x + 0.75 var srcX3 = fDstX >> fpShift; // x var srcX4 = (fDstX + (dx >> 1)) >> fpShift; // x + 0.50 var p1 = src1 + srcX1; var p2 = src2 + srcX2; var p3 = src3 + srcX3; var p4 = src4 + srcX4; var r = (2 + p1->R + p2->R + p3->R + p4->R) >> 2; var g = (2 + p1->G + p2->G + p3->G + p4->G) >> 2; var b = (2 + p1->B + p2->B + p3->B + p4->B) >> 2; var a = (2 + p1->A + p2->A + p3->A + p4->A) >> 2; // Copy color to destination *dstPtr++ = ColorBgra.FromUInt32 ((uint)b + ((uint)g << 8) + ((uint)r << 16) + ((uint)a << 24)); } } // Tell Cairo we changed the raw data dst.MarkDirty (); }