/// <summary>
/// Draws a bitmap image.
/// </summary>
/// <param name="source">The bitmap image.</param>
/// <param name="opacity">The opacity to draw with.</param>
/// <param name="sourceRect">The rect in the image to draw.</param>
/// <param name="destRect">The rect in the output to draw to.</param>
public void DrawImage(IBitmapImpl bitmap, double opacity, Rect sourceRect, Rect destRect)
{
var pixbuf = bitmap as Gdk.Pixbuf;
var rtb = bitmap as RenderTargetBitmapImpl;
var size = new Size(pixbuf?.Width ?? rtb.PixelWidth, pixbuf?.Height ?? rtb.PixelHeight);
var scale = new Vector(destRect.Width / sourceRect.Width, destRect.Height / sourceRect.Height);
_context.Save();
_context.Scale(scale.X, scale.Y);
destRect /= scale;
_context.PushGroup();
if (pixbuf != null)
{
Gdk.CairoHelper.SetSourcePixbuf(
_context,
pixbuf,
-sourceRect.X + destRect.X,
-sourceRect.Y + destRect.Y);
}
else
{
_context.SetSourceSurface(
rtb.Surface,
(int)(-sourceRect.X + destRect.X),
(int)(-sourceRect.Y + destRect.Y));
}
_context.Rectangle(destRect.ToCairo());
_context.Fill();
_context.PopGroupToSource();
_context.PaintWithAlpha(opacityOverride);
_context.Restore();
}
void DrawPixbuf(Cairo.Context ctx, Gdk.Pixbuf img, double x, double y, ImageDescription idesc)
{
ctx.Save();
ctx.Translate(x, y);
ctx.Scale(idesc.Size.Width / (double)img.Width, idesc.Size.Height / (double)img.Height);
Gdk.CairoHelper.SetSourcePixbuf(ctx, img, 0, 0);
#pragma warning disable 618
using (var p = ctx.Source) {
var pattern = p as Cairo.SurfacePattern;
if (pattern != null)
{
if (idesc.Size.Width > img.Width || idesc.Size.Height > img.Height)
{
// Fixes blur issue when rendering on an image surface
pattern.Filter = Cairo.Filter.Fast;
}
else
{
pattern.Filter = Cairo.Filter.Good;
}
}
}
#pragma warning restore 618
if (idesc.Alpha >= 1)
{
ctx.Paint();
}
else
{
ctx.PaintWithAlpha(idesc.Alpha);
}
ctx.Restore();
}
void RenderIcon(Cairo.Context context, SurfaceWrapper surface, double opacity)
{
context.SetSourceSurface(surface.Surface,
Allocation.X + (Allocation.Width - surface.Width) / 2,
Allocation.Y + (Allocation.Height - surface.Height) / 2);
context.PaintWithAlpha(opacity);
}
public static Gdk.Pixbuf WithAlpha (this Gdk.Pixbuf image, double opacity)
{
using (var surf = new Cairo.ImageSurface (Cairo.Format.Argb32, image.Width, image.Height)) {
using (var g = new Cairo.Context (surf)) {
CairoHelper.SetSourcePixbuf (g, image, 0, 0);
g.PaintWithAlpha (opacity);
}
return new Gdk.Pixbuf (surf.Data, true, 8, surf.Width, surf.Height, surf.Stride);
}
}
public static Gdk.Pixbuf WithAlpha(this Gdk.Pixbuf image, double opacity)
{
using (var surf = new Cairo.ImageSurface(Cairo.Format.Argb32, image.Width, image.Height)) {
using (var g = new Cairo.Context(surf)) {
CairoHelper.SetSourcePixbuf(g, image, 0, 0);
g.PaintWithAlpha(opacity);
}
return(new Gdk.Pixbuf(surf.Data, true, 8, surf.Width, surf.Height, surf.Stride));
}
}
protected override void TileDrawer(int index, Cairo.Context cr)
{
int roomIndex = (Map.MainGroup << 8) | index;
base.TileDrawer(index, cr);
if (DarkenUsedDungeonRooms && Project.RoomUsedInDungeon(roomIndex))
{
cr.SetSourceRGB(0, 0, 0);
cr.PaintWithAlpha(0.8);
}
}
/// <summary>
/// Draws a bitmap image.
/// </summary>
/// <param name="source">The bitmap image.</param>
/// <param name="opacity">The opacity to draw with.</param>
/// <param name="sourceRect">The rect in the image to draw.</param>
/// <param name="destRect">The rect in the output to draw to.</param>
public void DrawImage(IBitmap bitmap, double opacity, Rect sourceRect, Rect destRect)
{
var impl = bitmap.PlatformImpl as BitmapImpl;
var size = new Size(impl.PixelWidth, impl.PixelHeight);
var scale = new Vector(destRect.Width / sourceRect.Width, destRect.Height / sourceRect.Height);
_context.Save();
_context.Scale(scale.X, scale.Y);
destRect /= scale;
if (opacityOverride < 1.0f)
{
_context.PushGroup();
Gdk.CairoHelper.SetSourcePixbuf(
_context,
impl.Surface,
-sourceRect.X + destRect.X,
-sourceRect.Y + destRect.Y);
_context.Rectangle(destRect.ToCairo());
_context.Fill();
_context.PopGroupToSource();
_context.PaintWithAlpha(opacityOverride);
}
else
{
_context.PushGroup();
Gdk.CairoHelper.SetSourcePixbuf(
_context,
impl.Surface,
-sourceRect.X + destRect.X,
-sourceRect.Y + destRect.Y);
_context.Rectangle(destRect.ToCairo());
_context.Fill();
_context.PopGroupToSource();
_context.PaintWithAlpha(opacityOverride);
}
_context.Restore();
}
// Used by the workspace drawing area expose render loop.
// Takes care of the clipping.
public void RenderLivePreviewLayer(Cairo.Context ctx, double opacity)
{
if (!IsEnabled)
{
throw new InvalidOperationException("Tried to render a live preview after live preview has ended.");
}
// TODO remove seam around selection during live preview.
ctx.Save();
if (selection_path != null)
{
// Paint area outsize of the selection path, with the pre-effect image.
var imageSize = PintaCore.Workspace.ImageSize;
ctx.Rectangle(0, 0, imageSize.Width, imageSize.Height);
ctx.AppendPath(selection_path);
ctx.Clip();
ctx.SetSourceSurface(layer.Surface, (int)layer.Offset.X, (int)layer.Offset.Y);
ctx.PaintWithAlpha(opacity);
ctx.ResetClip();
// Paint area inside the selection path, with the post-effect image.
ctx.AppendPath(selection_path);
ctx.Clip();
ctx.SetSourceSurface(live_preview_surface, (int)layer.Offset.X, (int)layer.Offset.Y);
ctx.PaintWithAlpha(opacity);
ctx.AppendPath(selection_path);
ctx.FillRule = Cairo.FillRule.EvenOdd;
ctx.Clip();
}
else
{
ctx.SetSourceSurface(live_preview_surface, (int)layer.Offset.X, (int)layer.Offset.Y);
ctx.PaintWithAlpha(opacity);
}
ctx.Restore();
}
private void UpdateThumbnail()
{
double scalex = (double)Allocation.Width / (double)PintaCore.Workspace.ImageSize.Width;
double scaley = (double)Allocation.Height / (double)PintaCore.Workspace.ImageSize.Height;
thumbnail = new Cairo.ImageSurface(Cairo.Format.Argb32, Allocation.Width, Allocation.Height);
using (Cairo.Context g = new Cairo.Context(thumbnail)) {
g.Scale(scalex, scaley);
foreach (Layer layer in PintaCore.Layers.GetLayersToPaint())
{
g.SetSourceSurface(layer.Surface, (int)layer.Offset.X, (int)layer.Offset.Y);
g.PaintWithAlpha(layer.Opacity);
}
}
}
void DrawPixbuf(Cairo.Context ctx, Gdk.Pixbuf img, double x, double y, ImageDescription idesc)
{
ctx.Save();
ctx.Translate(x, y);
ctx.Scale(idesc.Size.Width / (double)img.Width, idesc.Size.Height / (double)img.Height);
Gdk.CairoHelper.SetSourcePixbuf(ctx, img, 0, 0);
if (idesc.Alpha == 1)
{
ctx.Paint();
}
else
{
ctx.PaintWithAlpha(idesc.Alpha);
}
ctx.Restore();
}
public void Fill(object backend)
{
var gtkc = (CairoContextBackend)backend;
Cairo.Context ctx = gtkc.Context;
if (gtkc.GlobalAlpha == 1)
{
ctx.Fill();
}
else
{
ctx.PushGroup();
ctx.Fill();
ctx.PopGroupToSource();
ctx.PaintWithAlpha(gtkc.GlobalAlpha);
}
}
protected override void TileDrawer(int index, Cairo.Context cr)
{
base.TileDrawer(index, cr);
int x = index % Width;
int y = index / Width;
cr.Save();
if (GetSelected(x, y))
{
cr.SetSourceRGB(1.0, 0, 0);
//cr.Rectangle(0, 0, TileWidth, TileHeight);
cr.PaintWithAlpha(0.4);
CairoHelper.DrawRectOutline(cr, 1, new Cairo.Rectangle(0, 0, TileWidth, TileHeight));
}
cr.Restore();
}
/// TODO: CairoExtensions.CachedDraw seems not to work correctly for me.
public static void CachedDraw(Cairo.Context self, ref SurfaceWrapper surface, Gdk.Rectangle region, object parameters = null, float opacity = 1.0f, Action <Cairo.Context, float> draw = null, double?forceScale = null)
{
double displayScale = forceScale.HasValue ? forceScale.Value : QuartzSurface.GetRetinaScale(self);
int targetWidth = (int)(region.Width * displayScale);
int targetHeight = (int)(region.Height * displayScale);
bool redraw = false;
if (surface == null || surface.Width != targetWidth || surface.Height != targetHeight)
{
if (surface != null)
{
surface.Dispose();
}
surface = new SurfaceWrapper(self, targetWidth, targetHeight);
redraw = true;
}
else if ((surface.Data == null && parameters != null) || (surface.Data != null && !surface.Data.Equals(parameters)))
{
redraw = true;
}
if (redraw)
{
surface.Data = parameters;
using (var context = new Cairo.Context(surface.Surface)) {
context.Operator = Cairo.Operator.Clear;
context.Paint();
context.Operator = Cairo.Operator.Over;
context.Save();
context.Scale(displayScale, displayScale);
draw(context, 1.0f);
context.Restore();
}
}
self.Save();
self.Translate(region.X, region.Y);
self.Scale(1 / displayScale, 1 / displayScale);
self.SetSourceSurface(surface.Surface, 0, 0);
self.PaintWithAlpha(opacity);
self.Restore();
}
public override void FillPreserve(object backend)
{
var gtkc = (CairoContextBackend)backend;
Cairo.Context ctx = gtkc.Context;
var alpha = gtkc.GlobalAlpha * gtkc.PatternAlpha;
if (alpha == 1)
{
ctx.FillPreserve();
}
else
{
ctx.Save();
ctx.ClipPreserve();
ctx.PaintWithAlpha(alpha);
ctx.Restore();
}
}
public virtual void Render(Cairo.Context cr)
{
double opacity = Opacity;
if (ContentAllocation.Width <= 0 || ContentAllocation.Height <= 0 || opacity <= 0)
{
return;
}
cr.Save();
if (opacity < 1.0)
{
cr.PushGroup();
}
MarginStyle margin_style = MarginStyle;
if (margin_style != null && margin_style != MarginStyle.None)
{
cr.Translate(Math.Round(Allocation.X), Math.Round(Allocation.Y));
cr.Save();
margin_style.Apply(this, cr);
cr.Restore();
cr.Translate(Math.Round(Margin.Left), Math.Round(Margin.Top));
}
else
{
cr.Translate(Math.Round(ContentAllocation.X), Math.Round(ContentAllocation.Y));
}
cr.Antialias = Cairo.Antialias.Default;
ClippedRender(cr);
if (opacity < 1.0)
{
cr.PopGroupToSource();
cr.PaintWithAlpha(Opacity);
}
cr.Restore();
}
private static void MakeReflection(Cairo.Context context, Cairo.ImageSurface source, int w, int h)
{
context.ResetClip();
context.SetSourceSurface(source, 2, 2);
context.Paint();
double alpha = -0.3;
double step = 1.0 / (double)source.Height;
context.Translate(0, h);
context.Scale(1, -1);
context.SetSourceSurface(source, 2, 2);
for (int i = 0; i < source.Height; i++)
{
context.Rectangle(0, i + 2, w, 1);
context.Clip();
alpha += step;
context.PaintWithAlpha(Math.Max(Math.Min(alpha, 0.7), 0.0));
context.ResetClip();
}
}
protected override bool OnExposeEvent(EventExpose e)
{
base.OnExposeEvent(e);
if (!PintaCore.Workspace.HasOpenDocuments)
{
return(true);
}
double scale = PintaCore.Workspace.Scale;
int x = (int)PintaCore.Workspace.Offset.X;
int y = (int)PintaCore.Workspace.Offset.Y;
// Translate our expose area for the whole drawingarea to just our canvas
Rectangle canvas_bounds = new Rectangle(x, y, PintaCore.Workspace.CanvasSize.Width, PintaCore.Workspace.CanvasSize.Height);
canvas_bounds.Intersect(e.Area);
if (canvas_bounds.IsEmpty)
{
return(true);
}
canvas_bounds.X -= x;
canvas_bounds.Y -= y;
// Resize our offscreen surface to a surface the size of our drawing area
if (canvas == null || canvas.Width != canvas_bounds.Width || canvas.Height != canvas_bounds.Height)
{
if (canvas != null)
{
(canvas as IDisposable).Dispose();
}
canvas = new Cairo.ImageSurface(Cairo.Format.Argb32, canvas_bounds.Width, canvas_bounds.Height);
}
cr.Initialize(PintaCore.Workspace.ImageSize, PintaCore.Workspace.CanvasSize);
using (Cairo.Context g = CairoHelper.Create(GdkWindow)) {
// Draw our 1 px black border
g.DrawRectangle(new Cairo.Rectangle(x, y, PintaCore.Workspace.CanvasSize.Width + 1, PintaCore.Workspace.CanvasSize.Height + 1), new Cairo.Color(0, 0, 0), 1);
// Set up our clip rectangle
g.Rectangle(new Cairo.Rectangle(x, y, PintaCore.Workspace.CanvasSize.Width, PintaCore.Workspace.CanvasSize.Height));
g.Clip();
g.Translate(x, y);
bool checker = true;
// Resize each layer and paint it to the screen
foreach (Layer layer in PintaCore.Layers.GetLayersToPaint())
{
cr.Render(layer.Surface, canvas, canvas_bounds.Location, checker);
g.SetSourceSurface(canvas, canvas_bounds.X + (int)(layer.Offset.X * scale), canvas_bounds.Y + (int)(layer.Offset.Y * scale));
g.PaintWithAlpha(layer.Opacity);
if (layer == PintaCore.Layers.CurrentLayer && PintaCore.LivePreview.IsEnabled)
{
cr.Render(PintaCore.LivePreview.LivePreviewSurface, canvas, canvas_bounds.Location, checker);
g.Save();
g.Scale(scale, scale);
g.AppendPath(PintaCore.Layers.SelectionPath);
g.Clip();
g.Scale(1 / scale, 1 / scale);
g.SetSourceSurface(canvas, canvas_bounds.X, canvas_bounds.Y);
g.PaintWithAlpha(layer.Opacity);
g.Restore();
}
checker = false;
}
// If we are at least 200% and grid is requested, draw it
if (PintaCore.Actions.View.PixelGrid.Active && cr.ScaleFactor.Ratio <= 0.5d)
{
gr.Render(canvas, canvas_bounds.Location);
g.SetSourceSurface(canvas, canvas_bounds.X, canvas_bounds.Y);
g.Paint();
}
// Selection outline
if (PintaCore.Layers.ShowSelection)
{
g.Save();
g.Translate(0.5, 0.5);
g.Scale(scale, scale);
g.AppendPath(PintaCore.Layers.SelectionPath);
if (PintaCore.Tools.CurrentTool.Name.Contains("Select") && !PintaCore.Tools.CurrentTool.Name.Contains("Selected"))
{
g.Color = new Cairo.Color(0.7, 0.8, 0.9, 0.2);
g.FillRule = Cairo.FillRule.EvenOdd;
g.FillPreserve();
}
g.LineWidth = 1 / scale;
// Draw a white line first so it shows up on dark backgrounds
g.Color = new Cairo.Color(1, 1, 1);
g.StrokePreserve();
// Draw a black dashed line over the white line
g.SetDash(new double[] { 2 / scale, 4 / scale }, 0);
g.Color = new Cairo.Color(0, 0, 0);
g.Stroke();
g.Restore();
}
}
return(true);
}
private void UpdateThumbnail()
{
double scalex = (double)Allocation.Width / (double)PintaCore.Workspace.ImageSize.Width;
double scaley = (double)Allocation.Height / (double)PintaCore.Workspace.ImageSize.Height;
thumbnail = new Cairo.ImageSurface (Cairo.Format.Argb32, Allocation.Width, Allocation.Height);
using (Cairo.Context g = new Cairo.Context (thumbnail)) {
g.Scale (scalex, scaley);
foreach (Layer layer in PintaCore.Layers.GetLayersToPaint ()) {
g.SetSourceSurface (layer.Surface, (int)layer.Offset.X, (int)layer.Offset.Y);
g.PaintWithAlpha (layer.Opacity);
}
}
}
