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EditBox: support PageUp/PageDown and Ctrl+PageUp/PageDown

This commit is contained in:
Vadim Lopatin 2014-04-22 13:32:33 +04:00
parent 2d4e14cee1
commit a2a146e11b
1 changed files with 61 additions and 0 deletions
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61
src/dlangui/widgets/editors.d
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@ -204,6 +204,10 @@ enum EditorActions {
WordRight,
PageUp,
PageDown,
/// move cursor to beginning of page
PageBegin,
/// move cursor to end of page
PageEnd,
LineBegin,
LineEnd,
DocumentBegin,
@ -230,6 +234,10 @@ class EditWidgetBase : WidgetGroup, EditableContentListener {
new Action(EditorActions.Right, KeyCode.RIGHT, 0),
new Action(EditorActions.WordLeft, KeyCode.LEFT, KeyFlag.Control),
new Action(EditorActions.WordRight, KeyCode.RIGHT, KeyFlag.Control),
new Action(EditorActions.PageUp, KeyCode.PAGEUP, 0),
new Action(EditorActions.PageDown, KeyCode.PAGEDOWN, 0),
new Action(EditorActions.PageBegin, KeyCode.PAGEUP, KeyFlag.Control),
new Action(EditorActions.PageEnd, KeyCode.PAGEDOWN, KeyFlag.Control),
new Action(EditorActions.LineBegin, KeyCode.HOME, 0),
new Action(EditorActions.LineEnd, KeyCode.END, 0),
new Action(EditorActions.DocumentBegin, KeyCode.HOME, KeyFlag.Control),
@ -789,9 +797,62 @@ class EditBox : EditWidgetBase, OnScrollHandler {
break;
case EditorActions.WordRight:
break;
case EditorActions.PageBegin:
{
ensureCaretVisible();
_caretPos.line = _firstVisibleLine;
invalidate();
return true;
}
break;
case EditorActions.PageEnd:
{
ensureCaretVisible();
int fullLines = _clientRc.height / _lineHeight;
int newpos = _firstVisibleLine + fullLines - 1;
if (newpos >= _content.length)
newpos = _content.length - 1;
_caretPos.line = newpos;
invalidate();
return true;
}
break;
case EditorActions.PageUp:
{
ensureCaretVisible();
int fullLines = _clientRc.height / _lineHeight;
int newpos = _firstVisibleLine - fullLines;
if (newpos < 0) {
_firstVisibleLine = 0;
_caretPos.line = 0;
} else {
int delta = _firstVisibleLine - newpos;
_firstVisibleLine = newpos;
_caretPos.line -= delta;
}
measureVisibleText();
updateScrollbars();
invalidate();
return true;
}
break;
case EditorActions.PageDown:
{
ensureCaretVisible();
int fullLines = _clientRc.height / _lineHeight;
int newpos = _firstVisibleLine + fullLines;
if (newpos >= _content.length) {
_caretPos.line = _content.length - 1;
} else {
int delta = newpos - _firstVisibleLine;
_firstVisibleLine = newpos;
_caretPos.line += delta;
}
measureVisibleText();
updateScrollbars();
invalidate();
return true;
}
break;
case EditorActions.DocumentBegin:
if (_caretPos.pos > 0 || _caretPos.line > 0) {