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public abstract DrawImage ( |
||
| image | ||
| dest | ||
| return | void | |
protected override void DrawBoxContent(Canvas canvas, Rectangle updateArea)
{
// canvas.FillRectangle(Color.White, 0, 0, this.Width, this.Height);
if (needUpdate)
{
//default bg => transparent !,
//gfx2d.Clear(ColorRGBA.White);//if want opaque bg
ReleaseUnmanagedResources();
if (bmp != null)
{
bmp.Dispose();
}
this.bmp = this.actualImage;// new Bitmap(this.Width, this.Height, this.actualImage.GetBuffer(), false);
// canvas.Platform.CreatePlatformBitmap(this.Width, this.Height, this.actualImage.GetBuffer(), false);
Image.SetCacheInnerImage(bmp, null);
needUpdate = false;
}
//canvas.FillRectangle(this.BackColor, 0, 0, this.Width, this.Height);
if (bmp != null)
{
canvas.DrawImage(this.bmp, new RectangleF(0, 0, this.Width, this.Height));
}
//---------------------
#if DEBUG
//canvasPage.dbug_DrawCrossRect(PixelFarm.Drawing.Color.Black,
// new Rectangle(0, 0, this.Width, this.Height));
#endif
}
protected override void DrawBoxContent(Canvas canvas, Rectangle updateArea)
{
if (this.imageBinder != null)
{
switch (imageBinder.State)
{
case ImageBinderState.Loaded:
{
canvas.DrawImage(imageBinder.Image,
new RectangleF(0, 0, this.Width, this.Height));
}
break;
case ImageBinderState.Unload:
{
if (this.imageBinder.HasLazyFunc)
{
this.imageBinder.LazyLoadImage();
}
}
break;
}
}
else
{
//when no image
//canvasPage.FillRectangle(BackColor, updateArea._left, updateArea._top, updateArea.Width, updateArea.Height);
}
#if DEBUG
//canvasPage.dbug_DrawCrossRect(PixelFarm.Drawing.Color.Black,
// new Rectangle(0, 0, this.Width, this.Height));
#endif
}
/// <summary>
/// Draw the background image of the given box in the given rectangle.<br/>
/// Handle background-repeat and background-position values.
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="box">the box to draw its background image</param>
/// <param name="imageLoadHandler">the handler that loads image to draw</param>
/// <param name="rectangle">the rectangle to draw image in</param>
public static void DrawBackgroundImage(Canvas g, CssBox box, ImageBinder imageBinder, RectangleF rectangle)
{
var image = imageBinder.Image;
//temporary comment image scale code
var imgSize = image.Size;
//new Size(imageLoadHandler.Rectangle == Rectangle.Empty ? imageLoadHandler.Image.Width : imageLoadHandler.Rectangle.Width,
// imageLoadHandler.Rectangle == Rectangle.Empty ? imageLoadHandler.Image.Height : imageLoadHandler.Rectangle.Height);
// get the location by BackgroundPosition value
var location = GetLocation(box.BackgroundPositionX, box.BackgroundPositionY, rectangle, imgSize);
//var srcRect = imageLoadHandler.Rectangle == Rectangle.Empty
// ? new Rectangle(0, 0, imgSize.Width, imgSize.Height)
// : new Rectangle(imageLoadHandler.Rectangle.Left, imageLoadHandler.Rectangle.Top, imgSize.Width, imgSize.Height);
var srcRect = new Rectangle(0, 0, image.Width, image.Height);
// initial image destination rectangle
var destRect = new Rectangle(location, imgSize);
// need to clip so repeated image will be cut on rectangle
var prevClip = g.CurrentClipRect;
PixelFarm.Drawing.Rectangle copyRect = new PixelFarm.Drawing.Rectangle(
(int)rectangle.X,
(int)rectangle.Y,
(int)rectangle.Width,
(int)rectangle.Height);
copyRect.Intersect(prevClip);
g.SetClipRect(copyRect);
switch (box.BackgroundRepeat)
{
case CssBackgroundRepeat.NoRepeat:
g.DrawImage(image, new RectangleF(location, imgSize), new RectangleF(0, 0, image.Width, image.Height));
break;
case CssBackgroundRepeat.RepeatX:
DrawRepeatX(g, image, rectangle, srcRect, destRect, imgSize);
break;
case CssBackgroundRepeat.RepeatY:
DrawRepeatY(g, image, rectangle, srcRect, destRect, imgSize);
break;
default:
DrawRepeat(g, image, rectangle, srcRect, destRect, imgSize);
break;
}
g.SetClipRect(prevClip);
}
protected override void DrawBoxContent(Canvas canvas, Rectangle updateArea)
{
//if (this.image != null)
//{
// canvas.DrawImage(this.image,
// new RectangleF(0, 0, this.Width, this.Height));
//}
//else
//{
//when no image
//---------------------
// canvas.FillRectangle(Color.White, 0, 0, this.Width, this.Height);
if (needUpdate)
{
//default bg => transparent !,
//gfx2d.Clear(ColorRGBA.White);//if want opaque bg
ReleaseUnmanagedResources();
int j = sprites.Count;
for (int i = 0; i < j; ++i)
{
sprites[i].OnDraw(gfx2d);
}
//this.bmp = new Bitmap(this.Width, this.Height, this.actualImage.GetBuffer(), true);
needUpdate = false;
}
canvas.DrawImage(actualImage, new RectangleF(0, 0, this.Width, this.Height));
//---------------------
//copy data from actual image to canvas
//}
#if DEBUG
//canvasPage.dbug_DrawCrossRect(PixelFarm.Drawing.Color.Black,
// new Rectangle(0, 0, this.Width, this.Height));
#endif
}
/// <summary>
/// Draw image failed to load icon.
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="r">the rectangle to draw icon in</param>
public static void DrawImageErrorIcon(Canvas g, RectangleF r)
{
g.DrawRectangle(Color.LightGray, r.Left + 2, r.Top + 2, 15, 15);
var image = GetErrorImage();
g.DrawImage(image, new RectangleF(r.Left + 3, r.Top + 3, image.Width, image.Height));
}
///// <summary>
///// Get cached solid brush instance for the given color.
///// </summary>
///// <param name="color">the color to get brush for</param>
///// <returns>brush instance</returns>
//public static Brush GetSolidBrush(Color color)
//{
// if (color == Color.White)
// {
// return Brushes.White;
// }
// else if (color == Color.Black)
// {
// return Brushes.Black;
// }
// else if (!IsColorVisible(color))
// {
// return Brushes.Transparent;
// }
// else
// {
// Brush brush;
// if (!_brushesCache.TryGetValue(color, out brush))
// {
// _brushesCache[color] = brush = CurrentGraphicPlatform.CreateSolidBrush(color);
// }
// return brush;
// }
//}
///// <summary>
///// Get cached pen instance for the given color.
///// </summary>
///// <param name="color">the color to get pen for</param>
///// <returns>pen instance</returns>
//public static Pen GetPen(GraphicPlatform p, Color color)
//{
// Pen pen;
// if (!_penCache.TryGetValue(color, out pen))
// {
// pen = p.CreateSolidPen(color);
// _penCache[color] = pen;
// }
// else
// {
// pen.Width = 1;
// }
// return pen;
//}
/// <summary>
/// Draw image loading icon.
/// </summary>
/// <param name="g">the device to draw into</param>
/// <param name="r">the rectangle to draw icon in</param>
public static void DrawImageLoadingIcon(Canvas g, RectangleF r)
{
g.DrawRectangle(Color.LightGray, r.Left + 3, r.Top + 3, 13, 14);
var image = GetLoadImage();
g.DrawImage(image, new RectangleF(r.Left + 4, r.Top + 4, image.Width, image.Height));
}
