protected override void OnDraw(Xwt.Drawing.Context ctx, Xwt.Rectangle dirtyRect)
{
base.OnDraw(ctx, dirtyRect);
if (image != null)
{
ctx.DrawImage(image, 0, 0);
if (filler != null)
{
int fillCount = (int)Math.Ceiling((Bounds.Width - image.Width) / filler.Width);
double x = image.Width;
while ((fillCount--) > 0)
{
ctx.DrawImage(filler, x, 0);
x += filler.Width;
}
}
}
}
// render all the objects in a page (or any composite object
private void ProcessPage(System.Drawing.Graphics g, IEnumerable p)
{
// TODO: (Peter) Support can grow and can shrink
foreach (PageItem pi in p)
{
if (pi is PageTextHtml)
{ // PageTextHtml is actually a composite object (just like a page)
ProcessHtml(pi as PageTextHtml, g);
continue;
}
if (pi is PageLine)
{
PageLine pl = pi as PageLine;
DrawLine(pl.SI.BColorLeft, pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X + _left - _hScroll), PixelsY(pl.Y + _top - _vScroll),
PixelsX(pl.X2 + _left - _hScroll), PixelsY(pl.Y2 + _top - _vScroll));
continue;
}
RectangleF rect = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
PixelsX(pi.W), PixelsY(pi.H));
if ((pi is PagePolygon) || (pi is PageCurve))
{ // intentionally empty; polygon's rectangles aren't calculated
}
if (pi.SI.BackgroundImage != null)
{ // put out any background image
PageImage i = pi.SI.BackgroundImage;
DrawImageBackground(i, pi.SI, g, rect);
}
if (pi is PageText)
{
// TODO: enable can shrink, can grow
// 2005 spec file, page 9, in the text box has
// CanGrow and CanShrink
PageText pt = pi as PageText;
DrawString(pt, g, rect);
}
else if (pi is PageImage)
{
PageImage i = pi as PageImage;
DrawImage(i, g, rect);
}
else if (pi is PageRectangle)
{
this.DrawBackground(g, rect, pi.SI);
}
else if (pi is PageEllipse)
{
PageEllipse pe = pi as PageEllipse;
DrawEllipse(pe, g, rect);
}
else if (pi is PagePie)
{
PagePie pp = pi as PagePie;
DrawPie(pp, g, rect);
}
else if (pi is PagePolygon)
{
PagePolygon ppo = pi as PagePolygon;
FillPolygon(ppo, g, rect);
}
else if (pi is PageCurve)
{
PageCurve pc = pi as PageCurve;
DrawCurve(pc.SI.BColorLeft, pc.SI.BStyleLeft, pc.SI.BWidthLeft,
g, pc.Points, pc.Offset, pc.Tension);
}
DrawBorder(pi, g, rect);
}
// TO: convert System.Drawing.Graphics to Xwt.Drawing.Context and draw it to this.g
Bitmap bm = new Bitmap(600, 600);
g.DrawImage(bm, 600, 600);
System.IO.MemoryStream s = new System.IO.MemoryStream();
gImg.Save(s, System.Drawing.Imaging.ImageFormat.Png);
gImg.Save("test.png", System.Drawing.Imaging.ImageFormat.Png);
// Xwt.Drawing.Image img = Xwt.Drawing.Image.FromStream(s);
Xwt.Drawing.Image img = Xwt.Drawing.Image.FromFile("test.png");
xwtContext.DrawImage(img, new Xwt.Rectangle(0, 0, 600, 600), new Xwt.Rectangle(0, 0, 600, 600));
//Xwt.Drawing.TextLayout layout = new Xwt.Drawing.TextLayout(xwtContext);
//layout.Font = xwtContext.Font;
//layout.Text = "Test";
//xwtContext.DrawTextLayout(layout, 2, 4);
}
private void DrawImageSized(PageImage pi, Xwt.Drawing.Image im, Xwt.Drawing.Context g, Xwt.Rectangle r)
{
double height, width; // some work variables
StyleInfo si = pi.SI;
Xwt.Rectangle r2 = new Xwt.Rectangle(r.X + PixelsX(si.PaddingLeft),
r.Y + PixelsY(si.PaddingTop),
r.Width - PixelsX(si.PaddingLeft + si.PaddingRight),
r.Height - PixelsY(si.PaddingTop + si.PaddingBottom));
Xwt.Rectangle ir; // int work rectangle
switch (pi.Sizing)
{
case ImageSizingEnum.AutoSize:
float imwidth = PixelsX((float)im.Size.Width);
float imheight = PixelsX((float)im.Size.Height);
ir = new Xwt.Rectangle(Convert.ToInt32(r2.X), Convert.ToInt32(r2.Y),
imwidth, imheight);
im.Scale((int)r2.Width, (int)r2.Height);
g.DrawImage(im, ir);
break;
case ImageSizingEnum.Clip:
g.Save();
g.Rectangle(r2);
g.Clip();
ir = new Xwt.Rectangle(Convert.ToInt32(r2.X), Convert.ToInt32(r2.Y),
im.Size.Width, im.Size.Height);
g.DrawImage(im, ir);
g.Restore();
break;
case ImageSizingEnum.FitProportional:
double ratioIm = (float)im.Size.Height / (float)im.Size.Width;
double ratioR = r2.Height / r2.Width;
height = r2.Height;
width = r2.Width;
if (ratioIm > ratioR)
{
// this means the rectangle width must be corrected
width = height * (1 / ratioIm);
}
else if (ratioIm < ratioR)
{
// this means the ractangle height must be corrected
height = width * ratioIm;
}
r2 = new Xwt.Rectangle(r2.X, r2.Y, width, height);
g.DrawImage(im, r2);
break;
case ImageSizingEnum.Fit:
default:
g.DrawImage(im, r2);
break;
}
}
// render all the objects in a page (or any composite object
private void ProcessPage(System.Drawing.Graphics g, IEnumerable p)
{
// TODO: (Peter) Support can grow and can shrink
foreach (PageItem pi in p)
{
if (pi is PageTextHtml)
{ // PageTextHtml is actually a composite object (just like a page)
ProcessHtml(pi as PageTextHtml, g);
continue;
}
if (pi is PageLine)
{
PageLine pl = pi as PageLine;
DrawLine(pl.SI.BColorLeft, pl.SI.BStyleLeft, pl.SI.BWidthLeft,
g, PixelsX(pl.X + _left - _hScroll), PixelsY(pl.Y + _top - _vScroll),
PixelsX(pl.X2 + _left - _hScroll), PixelsY(pl.Y2 + _top - _vScroll));
continue;
}
RectangleF rect = new RectangleF(PixelsX(pi.X + _left - _hScroll), PixelsY(pi.Y + _top - _vScroll),
PixelsX(pi.W), PixelsY(pi.H));
if ((pi is PagePolygon) || (pi is PageCurve))
{ // intentionally empty; polygon's rectangles aren't calculated
}
if (pi.SI.BackgroundImage != null)
{ // put out any background image
PageImage i = pi.SI.BackgroundImage;
DrawImageBackground(i, pi.SI, g, rect);
}
if (pi is PageText)
{
// TODO: enable can shrink, can grow
// 2005 spec file, page 9, in the text box has
// CanGrow and CanShrink
PageText pt = pi as PageText;
DrawString(pt, g, rect);
}
else if (pi is PageImage)
{
PageImage i = pi as PageImage;
DrawImage(i, g, rect);
}
else if (pi is PageRectangle)
{
this.DrawBackground(g, rect, pi.SI);
}
else if (pi is PageEllipse)
{
PageEllipse pe = pi as PageEllipse;
DrawEllipse(pe, g, rect);
}
else if (pi is PagePie)
{
PagePie pp = pi as PagePie;
DrawPie(pp, g, rect);
}
else if (pi is PagePolygon)
{
PagePolygon ppo = pi as PagePolygon;
FillPolygon(ppo, g, rect);
}
else if (pi is PageCurve)
{
PageCurve pc = pi as PageCurve;
DrawCurve(pc.SI.BColorLeft, pc.SI.BStyleLeft, pc.SI.BWidthLeft,
g, pc.Points, pc.Offset, pc.Tension);
}
DrawBorder(pi, g, rect);
}
// TO: convert System.Drawing.Graphics to Xwt.Drawing.Context and draw it to this.g
Bitmap bm = new Bitmap(gImg.Width, gImg.Height);
g.DrawImage(bm, gImg.Width, gImg.Height);
// Xwt.Drawing.Image.FromStream does not work. It crashes with both wpf and gtk
// As a work around save the image to a temporary file and load it into xwt using the
// FromFile method.
System.IO.MemoryStream s = new System.IO.MemoryStream();
gImg.Save(s, System.Drawing.Imaging.ImageFormat.Png);
string fileName = System.IO.Path.GetTempFileName();
gImg.Save(fileName, System.Drawing.Imaging.ImageFormat.Png);
// Xwt.Drawing.Image img = Xwt.Drawing.Image.FromStream(s);
Xwt.Drawing.Image img = Xwt.Drawing.Image.FromFile(fileName);
xwtContext.DrawImage(img, new Xwt.Rectangle(0, 0, gImg.Width, gImg.Height), new Xwt.Rectangle(0, 0, gImg.Width, gImg.Height));
img.Dispose();
System.IO.File.Delete(fileName);
}