private void TextBoxBase_MouseDown (object sender, MouseEventArgs e)
{
bool dbliclick = false;
if (e.Button == MouseButtons.Left) {
// Special case when shift key is pressed and
// left mouse is clicked.. set selection from
// current cursor to mouse
if ((Control.ModifierKeys & Keys.Shift) > 0) {
document.PositionCaret (e.X + document.ViewPortX, e.Y + document.ViewPortY);
document.SetSelectionToCaret (false);
document.DisplayCaret ();
return;
}
dbliclick = IsDoubleClick (e);
if (current_link != null) {
HandleLinkClicked (current_link);
return;
}
//ensure nothing is selected anymore BEFORE we
//position the caret, so the caret is recreated
//(caret is only visible when nothing is selected)
if (document.selection_visible && dbliclick == false) {
document.SetSelectionToCaret (true);
click_mode = CaretSelection.Position;
}
document.PositionCaret(e.X + document.ViewPortX, e.Y + document.ViewPortY);
if (dbliclick) {
switch (click_mode) {
case CaretSelection.Position:
SelectWord ();
click_mode = CaretSelection.Word;
break;
case CaretSelection.Word:
if (this is TextBox) {
document.SetSelectionToCaret (true);
click_mode = CaretSelection.Position;
break;
}
document.ExpandSelection (CaretSelection.Line, false);
click_mode = CaretSelection.Line;
break;
case CaretSelection.Line:
// Gotta do this first because Exanding to a word
// from a line doesn't really work
document.SetSelectionToCaret (true);
SelectWord ();
click_mode = CaretSelection.Word;
break;
}
} else {
document.SetSelectionToCaret (true);
click_mode = CaretSelection.Position;
}
click_point_x = e.X;
click_point_y = e.Y;
click_last = DateTime.Now;
}
if ((e.Button == MouseButtons.Middle) && XplatUI.RunningOnUnix) {
Document.Marker marker;
marker.tag = document.FindCursor(e.X + document.ViewPortX, e.Y + document.ViewPortY, out marker.pos);
marker.line = marker.tag.Line;
marker.height = marker.tag.Height;
document.SetSelection(marker.line, marker.pos, marker.line, marker.pos);
Paste (Clipboard.GetDataObject (true), null, true);
}
}
// Constructor will go when complete, only for testing - pdb
internal TextBoxBase ()
{
alignment = HorizontalAlignment.Left;
accepts_return = false;
accepts_tab = false;
auto_size = true;
InternalBorderStyle = BorderStyle.Fixed3D;
actual_border_style = BorderStyle.Fixed3D;
character_casing = CharacterCasing.Normal;
hide_selection = true;
max_length = short.MaxValue;
password_char = '\0';
read_only = false;
word_wrap = true;
richtext = false;
show_selection = false;
enable_links = false;
list_links = new ArrayList ();
current_link = null;
show_caret_w_selection = (this is TextBox);
document = new Document(this);
document.WidthChanged += new EventHandler(document_WidthChanged);
document.HeightChanged += new EventHandler(document_HeightChanged);
//document.CaretMoved += new EventHandler(CaretMoved);
document.Wrap = false;
click_last = DateTime.Now;
click_mode = CaretSelection.Position;
MouseDown += new MouseEventHandler(TextBoxBase_MouseDown);
MouseUp += new MouseEventHandler(TextBoxBase_MouseUp);
MouseMove += new MouseEventHandler(TextBoxBase_MouseMove);
SizeChanged += new EventHandler(TextBoxBase_SizeChanged);
FontChanged += new EventHandler(TextBoxBase_FontOrColorChanged);
ForeColorChanged += new EventHandler(TextBoxBase_FontOrColorChanged);
MouseWheel += new MouseEventHandler(TextBoxBase_MouseWheel);
RightToLeftChanged += new EventHandler (TextBoxBase_RightToLeftChanged);
scrollbars = RichTextBoxScrollBars.None;
hscroll = new ImplicitHScrollBar();
hscroll.ValueChanged += new EventHandler(hscroll_ValueChanged);
hscroll.SetStyle (ControlStyles.Selectable, false);
hscroll.Enabled = false;
hscroll.Visible = false;
hscroll.Maximum = Int32.MaxValue;
vscroll = new ImplicitVScrollBar();
vscroll.ValueChanged += new EventHandler(vscroll_ValueChanged);
vscroll.SetStyle (ControlStyles.Selectable, false);
vscroll.Enabled = false;
vscroll.Visible = false;
vscroll.Maximum = Int32.MaxValue;
SuspendLayout ();
this.Controls.AddImplicit (hscroll);
this.Controls.AddImplicit (vscroll);
ResumeLayout ();
SetStyle(ControlStyles.UserPaint | ControlStyles.StandardClick, false);
#if NET_2_0
SetStyle(ControlStyles.UseTextForAccessibility, false);
base.SetAutoSizeMode (AutoSizeMode.GrowAndShrink);
#endif
canvas_width = ClientSize.Width;
canvas_height = ClientSize.Height;
document.ViewPortWidth = canvas_width;
document.ViewPortHeight = canvas_height;
Cursor = Cursors.IBeam;
}
/// <summary>Select text around caret</summary>
internal void ExpandSelection(CaretSelection mode, bool to_caret) {
if (to_caret) {
// We're expanding the selection to the caret position
switch(mode) {
case CaretSelection.Line: {
// Invalidate the selection delta
if (caret > selection_prev) {
Invalidate(selection_prev.line, 0, caret.line, caret.line.text.Length);
} else {
Invalidate(selection_prev.line, selection_prev.line.text.Length, caret.line, 0);
}
if (caret.line.line_no <= selection_anchor.line.line_no) {
selection_start.line = caret.line;
selection_start.tag = caret.line.tags;
selection_start.pos = 0;
selection_end.line = selection_anchor.line;
selection_end.tag = selection_anchor.tag;
selection_end.pos = selection_anchor.pos;
selection_end_anchor = true;
} else {
selection_start.line = selection_anchor.line;
selection_start.pos = selection_anchor.height;
selection_start.tag = selection_anchor.line.FindTag(selection_anchor.height + 1);
selection_end.line = caret.line;
selection_end.tag = caret.line.tags;
selection_end.pos = caret.line.text.Length;
selection_end_anchor = false;
}
selection_prev.line = caret.line;
selection_prev.tag = caret.tag;
selection_prev.pos = caret.pos;
break;
}
case CaretSelection.Word: {
int start_pos;
int end_pos;
start_pos = FindWordSeparator(caret.line, caret.pos, false);
end_pos = FindWordSeparator(caret.line, caret.pos, true);
// Invalidate the selection delta
if (caret > selection_prev) {
Invalidate(selection_prev.line, selection_prev.pos, caret.line, end_pos);
} else {
Invalidate(selection_prev.line, selection_prev.pos, caret.line, start_pos);
}
if (caret < selection_anchor) {
selection_start.line = caret.line;
selection_start.tag = caret.line.FindTag(start_pos + 1);
selection_start.pos = start_pos;
selection_end.line = selection_anchor.line;
selection_end.tag = selection_anchor.tag;
selection_end.pos = selection_anchor.pos;
selection_prev.line = caret.line;
selection_prev.tag = caret.tag;
selection_prev.pos = start_pos;
selection_end_anchor = true;
} else {
selection_start.line = selection_anchor.line;
selection_start.pos = selection_anchor.height;
selection_start.tag = selection_anchor.line.FindTag(selection_anchor.height + 1);
selection_end.line = caret.line;
selection_end.tag = caret.line.FindTag(end_pos);
selection_end.pos = end_pos;
selection_prev.line = caret.line;
selection_prev.tag = caret.tag;
selection_prev.pos = end_pos;
selection_end_anchor = false;
}
break;
}
case CaretSelection.Position: {
SetSelectionToCaret(false);
return;
}
}
} else {
// We're setting the selection 'around' the caret position
switch(mode) {
case CaretSelection.Line: {
this.Invalidate(caret.line, 0, caret.line, caret.line.text.Length);
selection_start.line = caret.line;
selection_start.tag = caret.line.tags;
selection_start.pos = 0;
selection_end.line = caret.line;
selection_end.pos = caret.line.text.Length;
selection_end.tag = caret.line.FindTag(selection_end.pos);
selection_anchor.line = selection_end.line;
selection_anchor.tag = selection_end.tag;
selection_anchor.pos = selection_end.pos;
selection_anchor.height = 0;
selection_prev.line = caret.line;
selection_prev.tag = caret.tag;
selection_prev.pos = caret.pos;
this.selection_end_anchor = true;
break;
}
case CaretSelection.Word: {
int start_pos;
int end_pos;
start_pos = FindWordSeparator(caret.line, caret.pos, false);
end_pos = FindWordSeparator(caret.line, caret.pos, true);
this.Invalidate(selection_start.line, start_pos, caret.line, end_pos);
selection_start.line = caret.line;
selection_start.tag = caret.line.FindTag(start_pos + 1);
selection_start.pos = start_pos;
selection_end.line = caret.line;
selection_end.tag = caret.line.FindTag(end_pos);
selection_end.pos = end_pos;
selection_anchor.line = selection_end.line;
selection_anchor.tag = selection_end.tag;
selection_anchor.pos = selection_end.pos;
selection_anchor.height = start_pos;
selection_prev.line = caret.line;
selection_prev.tag = caret.tag;
selection_prev.pos = caret.pos;
this.selection_end_anchor = true;
break;
}
}
}
SetSelectionVisible (!(selection_start == selection_end));
}