/* ----------------------------------------------------------------- */
///
/// FitToWidth
///
/// <summary>
/// ウィンドウ（描画領域）の幅に合わせて拡大/縮小を行う．
/// </summary>
///
/* ----------------------------------------------------------------- */
public static double FitToWidth(Canvas canvas)
{
if (canvas == null)
{
return(0.0);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(0.0);
}
var core = engine.Core;
if (core == null)
{
return(0.0);
}
core.FitToWidth(canvas.Parent.Handle);
core.Zoom = core.Zoom - 1; // 暫定
#if CUBE_ASYNC
CanvasPolicy.AsyncRender(canvas, true);
#else
CanvasPolicy.Render(canvas, true);
#endif
return(core.Zoom);
}
/* ----------------------------------------------------------------- */
///
/// ZoomOut
///
/// <summary>
/// 現在のページを縮小して再描画する．縮小率はライブラリ依存．
/// </summary>
///
/* ----------------------------------------------------------------- */
public static double ZoomOut(Canvas canvas)
{
if (canvas == null)
{
return(0.0);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(0.0);
}
var core = engine.Core;
if (core == null)
{
return(0.0);
}
var prev = canvas.Size;
core.ZoomOut();
#if CUBE_ASYNC
CanvasPolicy.AsyncRender(canvas, true);
#else
CanvasPolicy.Render(canvas, true);
#endif
return(core.Zoom);
}
/* ----------------------------------------------------------------- */
///
/// Zoom
///
/// <summary>
/// 指定した倍率で現在のページを再描画する．
/// </summary>
///
/* ----------------------------------------------------------------- */
public static double Zoom(Canvas canvas, double percent)
{
if (canvas == null)
{
return(0.0);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(0.0);
}
var core = engine.Core;
if (core == null)
{
return(0.0);
}
var prev = canvas.Size;
if (percent < core.Zoom || core.Zoom < 400)
{
core.Zoom = Math.Min(percent, 400);
#if CUBE_ASYNC
CanvasPolicy.AsyncRender(canvas, true);
#else
CanvasPolicy.Render(canvas, true);
#endif
}
return(core.Zoom);
}
/* ----------------------------------------------------------------- */
///
/// LastPage
///
/// <summary>
/// 最後のページを描画する．
/// </summary>
///
/* ----------------------------------------------------------------- */
public static int LastPage(Canvas canvas)
{
if (canvas == null)
{
return(0);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(0);
}
var core = engine.Core;
if (core == null)
{
return(0);
}
core.CurrentPage = core.PageCount;
#if CUBE_ASYNC
CanvasPolicy.AsyncRender(canvas, false);
var control = (ScrollableControl)canvas.Parent;
control.AutoScrollPosition = new Point(0, 0);
#else
if (CanvasPolicy.Render(canvas, false))
{
engine.UpdateURL();
var control = (ScrollableControl)canvas.Parent;
control.AutoScrollPosition = new Point(0, 0);
}
#endif
return(core.CurrentPage);
}
/* ----------------------------------------------------------------- */
///
/// Open
///
/// <summary>
/// 指定された PDF ファイルを開いて，最初のページを描画する．
/// MEMO: パスの記憶場所を検討中．現在は，Parent.Tag を利用
/// している．
/// </summary>
///
/* ----------------------------------------------------------------- */
public static void Open(Canvas canvas, string path, string password, FitCondition which)
{
if (canvas == null)
{
return;
}
var engine = canvas.Tag as CanvasEngine;
if (engine != null)
{
CanvasPolicy.Close(canvas);
}
var core = new PDF();
engine = new CanvasEngine(core);
canvas.Tag = engine;
core.UseMuPDF = true;
core.UserPassword = password;
core.OwnerPassword = password;
if (core.LoadPDF(path))
{
core.CurrentPage = 1;
if (which == FitCondition.Height)
{
core.FitToHeight(canvas.Parent.Handle);
core.Zoom = core.Zoom - 1; // 暫定
}
else if (which == FitCondition.Width)
{
core.FitToWidth(canvas.Parent.Handle);
core.Zoom = core.Zoom - 1; // 暫定
}
else
{
core.Zoom = 100;
}
canvas.Parent.Text = System.IO.Path.GetFileNameWithoutExtension(path);
canvas.Parent.Tag = path;
CanvasPolicy.AsyncRender(canvas, true);
}
}
/* ----------------------------------------------------------------- */
///
/// FitToPage
///
/// <summary>
/// ウィンドウ（描画領域）に合わせて拡大/縮小を行う．
/// </summary>
///
/* ----------------------------------------------------------------- */
public static double FitToPage(Canvas canvas)
{
if (canvas == null)
{
return(0.0);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(0.0);
}
var core = engine.Core;
if (core == null)
{
return(0.0);
}
// 横長ならばFitToWidthを、縦長ならばFitToHeightを呼ぶ
if (GetOrientation(canvas) == Orientation.portratit)
{
core.FitToHeight(canvas.Parent.Handle);
}
else
{
core.FitToWidth(canvas.Parent.Handle);
}
core.Zoom = core.Zoom - 1; // 暫定
#if CUBE_ASYNC
CanvasPolicy.AsyncRender(canvas, true);
#else
CanvasPolicy.Render(canvas, true);
#endif
return(core.Zoom);
}
public static double ZoomIn(Canvas canvas)
{
if (canvas == null)
{
return(0.0);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(0.0);
}
var core = engine.Core;
if (core == null)
{
return(0.0);
}
var prev = canvas.Size;
if (core.Zoom < 400)
{
core.ZoomIN();
if (core.Zoom > 400)
{
core.Zoom = 400;
}
#if CUBE_ASYNC
CanvasPolicy.AsyncRender(canvas, true);
#else
CanvasPolicyA.Render(canvas, true);
#endif
}
return(core.Zoom);
}