C#图片查看器

1. 
   
   1. usingSystem;
   2. usingSystem.Collections.Generic;
   3. usingSystem.Text;
   4. usingSystem.Windows.Forms;
   5. usingSystem.Drawing;
   6. usingSystem.IO;
   7. usingSystem.Drawing.Design;
   9. namespace图片查看
   10. {
   11. #region展示大图
   12. classShowPicture
   13. {
   15. #region缩放图片尺寸
   17. ///<summary>
   18. ///按原始比例缩放图片的高和宽，并且使高小于等于MAX_Y，宽小于等于MAX_X
   19. ///</summary>
   20. ///<paramname="x">图片的宽</param>
   21. ///<paramname="y">图片的高</param>
   22. ///<paramname="MAX_X">PictureBox的高</param>
   23. ///<paramname="MAX_Y">PictureBox的宽</param>
   24. ///<returns></returns>
   25. privatestaticSizeZoom(doublex,doubley,intMAX_X,intMAX_Y)
   26. {
   27. doubleSCALE=x/y;
   28. if(x>MAX_X||y>MAX_Y)//修正原来的与运算符
   29. {
   30. if(x>y)
   31. {
   32. for(x=MAX_X;;)
   33. {
   34. y=x/SCALE;
   35. if(y<=MAX_Y)
   36. break;
   37. else
   38. x--;
   39. }
   40. }
   41. else
   42. {
   43. for(y=MAX_Y;;)
   44. {
   45. x=SCALE*y;
   46. if(x<=MAX_X)
   47. break;
   48. else
   49. y--;
   50. }
   51. }
   52. }
   53. returnnewSize((int)x,(int)y);
   54. }
   56. #endregion
   60. ///<summary>
   61. ///在新窗体中展示大图
   62. ///2008-10-26修改
   63. ///</summary>
   64. ///<paramname="image">图片</param>
   65. publicstaticvoidShow(ImageOriginalImage)
   66. {
   67. if(OriginalImage!=null)
   68. {
   69. FormshowPicture=newForm();
   70. showPicture.BackColor=Color.Snow;
   71. showPicture.Text="图片查看器";
   72. showPicture.WindowState=FormWindowState.Maximized;
   73. PictureBox图片_show_pictureBox=newPictureBox();
   75. 图片_show_pictureBox.BackColor=Color.Black;
   76. 图片_show_pictureBox.BorderStyle=BorderStyle.FixedSingle;
   77. 图片_show_pictureBox.Size=Zoom(OriginalImage.Width,OriginalImage.Height,900,675);
   78. 图片_show_pictureBox.Image=OriginalImage;
   79. 图片_show_pictureBox.SizeMode=PictureBoxSizeMode.StretchImage;
   80. 图片_show_pictureBox.Location=newPoint((1024-图片_show_pictureBox.Size.Width)/2,(675-图片_show_pictureBox.Size.Height)/2);
   81. showPicture.Controls.Add(图片_show_pictureBox);
   82. //图片_show_pictureBox.Anchor=AnchorStyles.Bottom|AnchorStyles.Left|AnchorStyles.Right|AnchorStyles.Top;//自动随窗体大小变化
   83. showPicture.ShowDialog();
   84. GC.Collect();
   85. }
   86. }
   88. #endregion
   89. }
   90. #endregion
   91. }