public override void Put(PagesContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
Graphics graphics = context.UnitGraphics;
if (graphics == null)
{
throw new Exception("Context already disposed!");
}
if (context.Pages.Length <= context.CurrentIndex) // 页用完了。
{
// 页索引超出范围，表示页不够用了。
return;
}
Page page = context.Pages[context.CurrentIndex];
float height = context.MaxLineHeight;
PointF leftTop = context.CurrentLeftTop;
var width = 0.0f;
if (page.Height < leftTop.Y + context.MaxLineHeight + height) // 要换页了。
{
context.CurrentIndex++;
if (context.Pages.Length <= context.CurrentIndex) // 页用完了。
{
this.PageIndex = context.CurrentIndex;
}
else // 用下一页。
{
this.LeftTop = new PointF(0, 0);
this.TheSize = new SizeF(width, height);
this.PageIndex = context.CurrentIndex;
context.CurrentLeftTop = new Point(0, 0);
//context.MaxLineHeight = 0;
}
}
else // 仅仅换行，不换页。
{
leftTop = new PointF(0, leftTop.Y + context.MaxLineHeight);
this.LeftTop = leftTop;
this.TheSize = new SizeF(width, height);
this.PageIndex = context.CurrentIndex;
context.CurrentLeftTop = new PointF(leftTop.X + width, leftTop.Y);
//context.MaxLineHeight = 0;
}
}
private static PagesContext GetPagesContext(int width, int height, int x, int y, float maxWidth, float maxHeight)
{
var page0 = new Page(width - x * 2 - (float)Math.Ceiling(maxWidth) * 2 - x * 2, (float)Math.Ceiling(maxHeight));
page0.Left = x * 2 + (float)Math.Ceiling(maxWidth) * 2;
page0.Top = y * 2;
var page1 = new Page(width - x * 2, height - y * 2 - (float)Math.Ceiling(maxHeight));
page1.Left = x * 2;
page1.Top = y * 2 + (float)Math.Ceiling(maxHeight);
var context = new PagesContext(page0, page1);
return(context);
}
private static void Draw(List <ChunkBase> chunkList, PagesContext context, Graphics graphics, Brush brush, bool showRectangle)
{
foreach (var item in chunkList)
{
SizeF bigSize = graphics.MeasureString("丨" + item.Text + "丨", item.TheFont);
Bitmap bigImage = new Bitmap((int)bigSize.Width, (int)bigSize.Height);
if (item.Tag is IngredientCategory)
{
using (var g = Graphics.FromImage(bigImage))
{ g.DrawString("丨" + item.Text + "丨", item.TheFont, brush, 0, 0); }
}
else if (item.Tag is WeightedIngredient)
{
var weighted = item.Tag as WeightedIngredient;
var ingredientBrush = new SolidBrush(weighted.Ingredient.ForeColor);
using (var g = Graphics.FromImage(bigImage))
{ g.DrawString("丨" + item.Text + "丨", item.TheFont, ingredientBrush, 0, 0); }
ingredientBrush.Dispose();
}
graphics.DrawImage(bigImage, // 把带有左右多余内容的bigImage的中间部分画到目标上。
new RectangleF(
item.LeftTop.X + context.Pages[item.PageIndex].Left,
item.LeftTop.Y + context.Pages[item.PageIndex].Top,
item.TheSize.Width,
item.TheSize.Height),
new RectangleF(
(bigImage.Width - item.TheSize.Width) / 2,
0,
item.TheSize.Width,
item.TheSize.Height),
GraphicsUnit.Pixel);
if (showRectangle) // 用矩形框起来，方便调试。
{
graphics.DrawRectangle(rectPen,
new Rectangle(
(int)(item.LeftTop.X + context.Pages[item.PageIndex].Left),
(int)(item.LeftTop.Y + context.Pages[item.PageIndex].Top),
(int)(item.TheSize.Width),
(int)(item.TheSize.Height)));
}
bigImage.Dispose();
}
}
/// <summary>
///
/// </summary>
/// <param name="project"></param>
/// <param name="font"></param>
/// <param name="brush"></param>
/// <returns></returns>
public static Bitmap DumpBitmap(this PartyProject project, int tableCount, Font font, Pen pen, Brush brush, bool showRectangle)
{
if (project == null)
{
return(null);
}
const int width = 827, height = 1169;// A4
const int x = 10, y = 10;
var bitmap = new Bitmap(width, height);
using (var graphics = Graphics.FromImage(bitmap))
{
graphics.PageUnit = GraphicsUnit.Pixel;
// 边线
DrawBounds(pen, width, height, x, y, graphics);
// 左右两列菜品
float maxWidth, maxHeight;
DrawDishes(project, font, pen, brush, x, y, graphics, out maxWidth, out maxHeight);
// 所有的食材
List <WeightedIngredient> list = GetIngredientList(project);
// 转化为待处理的Chunk
List <ChunkBase> chunkList = GetChunkList(list, tableCount, font);
// 页集合的上下文。
PagesContext context = GetPagesContext(width, height, x, y, maxWidth, maxHeight);
// 处理：将Chunk放到正确的位置。
foreach (var item in chunkList)
{
item.Put(context);
}
// 根据Chunk记录的位置信息，画图。
Draw(chunkList, context, graphics, brush, showRectangle);
}
return(bitmap);
}
/// <summary> /// 把这个单元安排到合适的地方去。 /// </summary> /// <param name="context"></param> public abstract void Put(PagesContext context);
public override void Put(PagesContext context)
{
if (context == null)
{
throw new ArgumentNullException("context");
}
Graphics graphics = context.UnitGraphics;
if (graphics == null)
{
throw new Exception("Context already disposed!");
}
if (context.Pages.Length <= context.CurrentIndex) // 页用完了。
{
this.PageIndex = context.CurrentIndex; // 页索引超出范围，表示页不够用了。
return;
}
Page page = context.Pages[context.CurrentIndex];
PointF leftTop = context.CurrentLeftTop;
SizeF bigSize = graphics.MeasureString("丨" + this.Text + "丨", this.TheFont);
SizeF emptySize = graphics.MeasureString("丨丨", this.TheFont);
var width = (bigSize.Width - emptySize.Width);
var height = bigSize.Height;
if (page.Width < leftTop.X + width) // 该换行了。
{
if (page.Height < leftTop.Y + context.MaxLineHeight + height) // 要换页了。
{
context.CurrentIndex++;
if (context.Pages.Length <= context.CurrentIndex) // 页用完了。
{
this.PageIndex = context.CurrentIndex;
}
else // 用下一页。
{
this.LeftTop = new PointF(0, 0);
this.TheSize = new SizeF(width, height);
this.PageIndex = context.CurrentIndex;
context.CurrentLeftTop = new Point(0, 0);
//context.MaxLineHeight = 0;
}
}
else // 仅仅换行，不换页。
{
leftTop = new PointF(0, leftTop.Y + context.MaxLineHeight);
this.LeftTop = leftTop;
this.TheSize = new SizeF(width, height);
this.PageIndex = context.CurrentIndex;
context.CurrentLeftTop = new PointF(leftTop.X + width, leftTop.Y);
//context.MaxLineHeight = 0;
}
}
else // 当前行还可以放下此chunk。
{
this.LeftTop = leftTop;
this.TheSize = new SizeF(width, height);
this.PageIndex = context.CurrentIndex;
context.CurrentLeftTop = new PointF(leftTop.X + width, leftTop.Y);
if (leftTop.X == 0 || // 第一个字符（串）
context.MaxLineHeight < (int)height)
{
context.MaxLineHeight = (int)height;
}
}
}