/// ------------------------------------------------------------------------------------
/// <summary>
/// Goes to the top (beginning of the main stream of the first division) of the current
/// page.
/// </summary>
/// <param name="e">The <see cref="T:System.Windows.Forms.KeyEventArgs"/> instance
/// containing the event data.</param>
/// <param name="graphics">The graphics.</param>
/// ------------------------------------------------------------------------------------
protected void GoToPageTopOrBottom(KeyEventArgs e, IVwGraphics graphics)
{
bool fTop = (e.KeyCode == Keys.PageUp);
// Find the page we're on
int iDiv;
bool fEndBeforeAnchor;
int dyPageScreen;
IVwSelection vwsel = PubControl.FocusedRootBox.Selection;
if (vwsel == null || !vwsel.IsValid)
{
return;
}
Rectangle rcSel = PubControl.GetSelectionRectangle(vwsel, graphics, out fEndBeforeAnchor);
// JohnT: I think the idea here is that if it's an IP we want it's center, otherwise, we want
// the endpoint.
int y = vwsel.IsRange ? (fEndBeforeAnchor ? rcSel.Top : rcSel.Bottom) :
(rcSel.Bottom + rcSel.Top) / 2;
int x = vwsel.IsRange ? (fEndBeforeAnchor ? rcSel.Left : rcSel.Right) :
(rcSel.Left + rcSel.Right) / 2;
bool layedOutPage;
Page page = PubControl.PageFromPrinterY(x, y, !fTop, PubControl.FocusedStream,
out dyPageScreen, out iDiv, out layedOutPage);
if (iDiv < 0 || iDiv >= PubControl.Divisions.Count || page == null)
{
return;
}
// Destroy the current selection
PubControl.Divisions[iDiv].MainRootBox.DestroySelection();
// Now we know the page, so we can put the IP on the first/last line of this page.
IVwSelection sel = fTop ? page.TopOfPageSelection.Selection :
page.BottomOfPageSelection.Selection;
sel.Install();
sel.RootBox.Activate(VwSelectionState.vssEnabled);
PubControl.FocusedRootBox = sel.RootBox;
PubControl.ScrollSelectionIntoView(sel, VwScrollSelOpts.kssoDefault);
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Special handling for Ctrl-Home/End and scrolling the selection into view
/// </summary>
/// <param name="e"></param>
/// <param name="ss"></param>
/// ------------------------------------------------------------------------------------
protected override void HandleKeyDown(KeyEventArgs e, VwShiftStatus ss)
{
// We dealt with Ctrl-Home/End already in OnKeyDown, so we just make sure that the
// selection is visible here.
PubControl.ScrollSelectionIntoView(null, VwScrollSelOpts.kssoDefault);
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// User pressed a key.
/// </summary>
/// <param name="e"></param>
/// <returns>
/// <c>true</c> if we handled the key, <c>false</c> otherwise (e.g. we're
/// already at the end of the rootbox and the user pressed down arrow key).
/// </returns>
/// ------------------------------------------------------------------------------------
public override bool OnKeyDown(KeyEventArgs e)
{
if ((e.KeyCode == Keys.PageUp || e.KeyCode == Keys.PageDown) &&
((e.Modifiers & Keys.Control) == Keys.Control))
{
IVwGraphics vg = PubControl.PrinterGraphics;
try
{
GoToPageTopOrBottom(e, vg);
}
finally
{
PubControl.ReleaseGraphics(vg);
}
}
else if ((e.KeyCode == Keys.Home || e.KeyCode == Keys.End) && (e.Modifiers & Keys.Control) != 0)
{
// Ctrl-Home needs to go to beginning of first division
// Ctrl-End needs to go to end of last division
PubControl.FocusedStream = PubControl.Divisions[
(e.KeyCode == Keys.Home) ? 0 : PubControl.Divisions.Count - 1].MainLayoutStream;
if (PubControl.FocusedRootBox.Selection == null)
{
PubControl.FocusedRootBox.MakeSimpleSel(e.KeyCode == Keys.Home, true, false, true);
}
using (new WaitCursor(PubControl.ParentForm))
{
IVwGraphics vg = PubControl.PrinterGraphics;
try
{
while (PubControl.LayoutToPageIfNeeded((e.KeyCode == Keys.Home) ? 0 :
PubControl.Pages.Count - 1, vg.XUnitsPerInch, vg.YUnitsPerInch))
{
}
}
finally
{
PubControl.ReleaseGraphics(vg);
}
}
base.OnKeyDown(e);
}
else
{
if (!base.OnKeyDown(e))
{
// this means that we are already at the beginning or end of the
// division. However, if we have more divisions we try there...
int iOldDiv = PubControl.DivisionIndexForMainStream(PubControl.FocusedStream);
if (iOldDiv < 0)
{
return(true);
}
int iNewDiv;
bool fUpwards = false;
Keys keyCode = e.KeyCode;
if (keyCode == Keys.Left)
{
StVc vc = ViewConstructor as StVc;
keyCode = (vc != null && vc.RightToLeft) ? Keys.Down : Keys.Up;
}
else if (keyCode == Keys.Right)
{
StVc vc = ViewConstructor as StVc;
keyCode = (vc != null && vc.RightToLeft) ? Keys.Up : Keys.Down;
}
switch (keyCode)
{
case Keys.PageUp:
case Keys.Up:
iNewDiv = iOldDiv - 1;
fUpwards = true;
break;
case Keys.Down:
case Keys.PageDown:
iNewDiv = iOldDiv + 1;
break;
default:
return(false);
}
if (iNewDiv < 0 || iNewDiv >= PubControl.Divisions.Count)
{
return(true);
}
PubControl.FocusedStream = PubControl.Divisions[iNewDiv].MainLayoutStream;
// we better destroy the selection or we end up somewhere in the
// middle of the rootbox if the selection was previously there.
if (fUpwards)
{
PubControl.FocusedRootBox.MakeSimpleSel(false, true, false, true);
}
else
{
PubControl.FocusedRootBox.MakeSimpleSel(true, true, false, true);
}
if (e.KeyCode == Keys.Down || e.KeyCode == Keys.Right ||
e.KeyCode == Keys.Up || e.KeyCode == Keys.Left)
{
// for Down and Up keys we're still not at the right position,
// but at least in the correct line.
PubControl.ScrollSelectionIntoView(null, VwScrollSelOpts.kssoDefault);
}
else
{
if (!base.OnKeyDown(e))
{
PubControl.FocusedStream = PubControl.Divisions[iOldDiv].MainLayoutStream;
return(false);
}
}
}
}
return(true);
}
