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
CanvasPolicyA.Render(canvas, true);
#endif
return(core.Zoom);
}
/// http://msdn.microsoft.com/ja-jp/library/c5kehkcz%28VS.80%29.aspx
private static bool Render(Canvas canvas, bool adjust)
{
if (canvas == null)
{
return(false);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(false);
}
var core = engine.Core;
if (core == null)
{
return(false);
}
lock (core)
{
var status = core.RenderPage(IntPtr.Zero, false, false);
if (status && adjust)
{
CanvasPolicyA.Adjust(canvas);
}
canvas.Invalidate();
return(status);
}
}
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 (CanvasPolicyA.Render(canvas, false))
{
engine.UpdateURL();
var control = (ScrollableControl)canvas.Parent;
control.AutoScrollPosition = new Point(0, 0);
}
#endif
return(core.CurrentPage);
}
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
CanvasPolicyA.Render(canvas, true);
#endif
return(core.Zoom);
}
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
CanvasPolicyA.Render(canvas, true);
#endif
}
return(core.Zoom);
}
private static void MouseMoveHandler(object sender, MouseEventArgs e)
{
var canvas = sender as Canvas;
if (canvas == null)
{
return;
}
if (is_mouse_down_ && e.Button == MouseButtons.Left)
{
var control = (ScrollableControl)canvas.Parent;
var current = canvas.PointToScreen(e.Location);
int x = current.X - origin_.X;
int y = current.Y - origin_.Y;
control.AutoScrollPosition = new Point(-x, -y);
var cursor = CanvasPolicyA.GetHandCursor();
if (cursor != null)
{
canvas.Cursor = cursor;
}
}
else
{
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return;
}
var core = engine.Core;
if (core == null)
{
return;
}
lock (core)
{
var pos = new Point((int)(e.Location.X * 72.0 / core.RenderDPI), (int)(e.Location.Y * 72.0 / core.RenderDPI));
var result = engine.GetURL(pos);
if (result != null)
{
if (canvas.Cursor == Cursors.Default)
{
canvas.Cursor = Cursors.Hand;
tooltip_.Show(result, canvas, 3000);
}
}
else
{
canvas.Cursor = Cursors.Default;
tooltip_.Hide(canvas);
}
}
}
}
public static bool Search(Canvas canvas, SearchArgs args)
{
if (canvas == null)
{
return(false);
}
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return(false);
}
var core = engine.Core;
if (core == null)
{
return(false);
}
core.SearchCaseSensitive = !args.IgnoreCase;
var order = args.WholeDocument ? PDFLibNet.PDFSearchOrder.PDFSearchFromdBegin : PDFLibNet.PDFSearchOrder.PDFSearchFromCurrent;
int result = 0;
if (args.FromBegin)
{
PreviousSearchResult_ = null;
result = core.FindFirst(args.Text, order, false, args.WholeWord);
}
else if (args.FindNext)
{
result = core.FindNext(args.Text);
}
else
{
result = core.FindPrevious(args.Text);
}
//else result = core.FindText(args.Text, core.CurrentPage, order, !args.IgnoreCase, !args.FindNext, true, args.WholeWord);
var prev = core.CurrentPage;
if (result > 0 && (PreviousSearchResult_ == null || !Equals(PreviousSearchResult_, core.SearchResults[0])))
{
core.CurrentPage = core.SearchResults[0].Page;
PreviousSearchResult_ = core.SearchResults[0];
}
CanvasPolicyA.Render(canvas, false);
if (core.CurrentPage != prev)
{
engine.UpdateURL();
}
return(result > 0);
}
private static void Adjust_WorkCompletedHandler(object sender, RunWorkerCompletedEventArgs e)
{
var canvas = e.Result as Canvas;
if (canvas == null)
{
return;
}
canvas.Cursor = Cursors.Default;
CanvasPolicyA.Adjust(canvas);
canvas.Invalidate();
}
public static void Destroy(Canvas canvas)
{
if (canvas == null)
{
return;
}
var parent = (ScrollableControl)canvas.Parent;
foreach (var child in parent.Controls.Find("Canvas", false))
{
CanvasPolicyA.Close((Canvas)child);
parent.Controls.Remove(child);
child.Dispose();
}
}
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)
{
CanvasPolicyA.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;
CanvasPolicyA.AsyncRender(canvas, true);
}
}
private static void MouseClickHandler(object sender, MouseEventArgs e)
{
var canvas = sender as Canvas;
if (canvas == null)
{
return;
}
if (canvas.Cursor == Cursors.Hand)
{
var engine = canvas.Tag as CanvasEngine;
if (engine == null)
{
return;
}
var core = engine.Core;
if (core == null)
{
return;
}
lock (core)
{
var pos = new Point((int)(e.Location.X * 72.0 / core.RenderDPI), (int)(e.Location.Y * 72.0 / core.RenderDPI));
var addr = engine.GetURL(pos);
if (addr != null)
{
System.Diagnostics.Process.Start(addr);
}
}
canvas.Cursor = Cursors.Default;
}
else
{
var cursor = CanvasPolicyA.GetHandCursor();
if (cursor != null)
{
canvas.Cursor = cursor;
}
}
}
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
CanvasPolicyA.Render(canvas, true);
#endif
return(core.Zoom);
}
