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wxWidgets/src/generic/hyperlink.cpp Normal file
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/////////////////////////////////////////////////////////////////////////////
// Name: src/generic/hyperlink.cpp
// Purpose: Hyperlink control
// Author: David Norris <danorris@gmail.com>, Otto Wyss
// Modified by: Ryan Norton, Francesco Montorsi
// Created: 04/02/2005
// RCS-ID: $Id: hyperlink.cpp 62092 2009-09-24 16:46:50Z JS $
// Copyright: (c) 2005 David Norris
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
//---------------------------------------------------------------------------
// Pre-compiled header stuff
//---------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#if wxUSE_HYPERLINKCTRL
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "wx/hyperlink.h"
#ifndef WX_PRECOMP
#include "wx/utils.h" // for wxLaunchDefaultBrowser
#include "wx/dcclient.h"
#include "wx/menu.h"
#include "wx/log.h"
#include "wx/dataobj.h"
#endif
#include "wx/clipbrd.h"
// ============================================================================
// implementation
// ============================================================================
IMPLEMENT_DYNAMIC_CLASS(wxHyperlinkCtrl, wxControl)
IMPLEMENT_DYNAMIC_CLASS(wxHyperlinkEvent, wxCommandEvent)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_HYPERLINK)
// reserved for internal use only
#define wxHYPERLINKCTRL_POPUP_COPY_ID 16384
const wxChar wxHyperlinkCtrlNameStr[] = wxT("hyperlink");
// ----------------------------------------------------------------------------
// wxHyperlinkCtrl
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxHyperlinkCtrl, wxControl)
EVT_PAINT(wxHyperlinkCtrl::OnPaint)
EVT_LEFT_DOWN(wxHyperlinkCtrl::OnLeftDown)
EVT_LEFT_UP(wxHyperlinkCtrl::OnLeftUp)
EVT_RIGHT_UP(wxHyperlinkCtrl::OnRightUp)
EVT_MOTION(wxHyperlinkCtrl::OnMotion)
EVT_LEAVE_WINDOW(wxHyperlinkCtrl::OnLeaveWindow)
EVT_SIZE(wxHyperlinkCtrl::OnSize)
// for the context menu
EVT_MENU(wxHYPERLINKCTRL_POPUP_COPY_ID, wxHyperlinkCtrl::OnPopUpCopy)
END_EVENT_TABLE()
bool wxHyperlinkCtrl::Create(wxWindow *parent, wxWindowID id,
const wxString& label, const wxString& url, const wxPoint& pos,
const wxSize& size, long style, const wxString& name)
{
wxASSERT_MSG(!url.empty() || !label.empty(),
wxT("Both URL and label are empty ?"));
#ifdef __WXDEBUG__
int alignment = (int)((style & wxHL_ALIGN_LEFT) != 0) +
(int)((style & wxHL_ALIGN_CENTRE) != 0) +
(int)((style & wxHL_ALIGN_RIGHT) != 0);
wxASSERT_MSG(alignment == 1,
wxT("Specify exactly one align flag!"));
#endif
if (!wxControl::Create(parent, id, pos, size, style, wxDefaultValidator, name))
return false;
// set to non empty strings both the url and the label
if(url.empty())
SetURL(label);
else
SetURL(url);
if(label.empty())
SetLabel(url);
else
SetLabel(label);
m_rollover = false;
m_clicking = false;
m_visited = false;
// colours
m_normalColour = *wxBLUE;
m_hoverColour = *wxRED;
m_visitedColour = wxColour(wxT("#551a8b"));
SetForegroundColour(m_normalColour);
// by default the font of an hyperlink control is underlined
wxFont f = GetFont();
f.SetUnderlined(true);
SetFont(f);
SetInitialSize(size);
return true;
}
wxSize wxHyperlinkCtrl::DoGetBestSize() const
{
int w, h;
wxClientDC dc((wxWindow *)this);
dc.SetFont(GetFont());
dc.GetTextExtent(GetLabel(), &w, &h);
wxSize best(w, h);
CacheBestSize(best);
return best;
}
void wxHyperlinkCtrl::SetNormalColour(const wxColour &colour)
{
m_normalColour = colour;
if (!m_visited)
{
SetForegroundColour(m_normalColour);
Refresh();
}
}
void wxHyperlinkCtrl::SetVisitedColour(const wxColour &colour)
{
m_visitedColour = colour;
if (m_visited)
{
SetForegroundColour(m_visitedColour);
Refresh();
}
}
void wxHyperlinkCtrl::DoContextMenu(const wxPoint &pos)
{
wxMenu *menuPopUp = new wxMenu(wxEmptyString, wxMENU_TEAROFF);
menuPopUp->Append(wxHYPERLINKCTRL_POPUP_COPY_ID, _("&Copy URL"));
PopupMenu( menuPopUp, pos );
delete menuPopUp;
}
wxRect wxHyperlinkCtrl::GetLabelRect() const
{
// our best size is always the size of the label without borders
wxSize c(GetClientSize()), b(GetBestSize());
wxPoint offset;
// the label is always centered vertically
offset.y = (c.GetHeight()-b.GetHeight())/2;
if (HasFlag(wxHL_ALIGN_CENTRE))
offset.x = (c.GetWidth()-b.GetWidth())/2;
else if (HasFlag(wxHL_ALIGN_RIGHT))
offset.x = c.GetWidth()-b.GetWidth();
else if (HasFlag(wxHL_ALIGN_LEFT))
offset.x = 0;
return wxRect(offset, b);
}
// ----------------------------------------------------------------------------
// wxHyperlinkCtrl - event handlers
// ----------------------------------------------------------------------------
void wxHyperlinkCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
dc.SetFont(GetFont());
dc.SetTextForeground(GetForegroundColour());
dc.SetTextBackground(GetBackgroundColour());
dc.DrawText(GetLabel(), GetLabelRect().GetTopLeft());
}
void wxHyperlinkCtrl::OnLeftDown(wxMouseEvent& event)
{
// the left click must start from the hyperlink rect
m_clicking = GetLabelRect().Contains(event.GetPosition());
}
void wxHyperlinkCtrl::OnLeftUp(wxMouseEvent& event)
{
// the click must be started and ended in the hyperlink rect
if (!m_clicking || !GetLabelRect().Contains(event.GetPosition()))
return;
SetForegroundColour(m_visitedColour);
m_visited = true;
m_clicking = false;
// send the event
wxHyperlinkEvent linkEvent(this, GetId(), m_url);
if (!GetEventHandler()->ProcessEvent(linkEvent)) // was the event skipped ?
if (!wxLaunchDefaultBrowser(m_url))
wxLogWarning(wxT("Could not launch the default browser with url '%s' !"), m_url.c_str());
}
void wxHyperlinkCtrl::OnRightUp(wxMouseEvent& event)
{
if( GetWindowStyle() & wxHL_CONTEXTMENU )
if ( GetLabelRect().Contains(event.GetPosition()) )
DoContextMenu(wxPoint(event.m_x, event.m_y));
}
void wxHyperlinkCtrl::OnMotion(wxMouseEvent& event)
{
wxRect textrc = GetLabelRect();
if (textrc.Contains(event.GetPosition()))
{
SetCursor(wxCursor(wxCURSOR_HAND));
SetForegroundColour(m_hoverColour);
m_rollover = true;
Refresh();
}
else if (m_rollover)
{
SetCursor(*wxSTANDARD_CURSOR);
SetForegroundColour(!m_visited ? m_normalColour : m_visitedColour);
m_rollover = false;
Refresh();
}
}
void wxHyperlinkCtrl::OnLeaveWindow(wxMouseEvent& WXUNUSED(event) )
{
// NB: when the label rect and the client size rect have the same
// height this function is indispensable to remove the "rollover"
// effect as the OnMotion() event handler could not be called
// in that case moving the mouse out of the label vertically...
if (m_rollover)
{
SetCursor(*wxSTANDARD_CURSOR);
SetForegroundColour(!m_visited ? m_normalColour : m_visitedColour);
m_rollover = false;
Refresh();
}
}
void wxHyperlinkCtrl::OnPopUpCopy( wxCommandEvent& WXUNUSED(event) )
{
#if wxUSE_CLIPBOARD
if (!wxTheClipboard->Open())
return;
wxTextDataObject *data = new wxTextDataObject( m_url );
wxTheClipboard->SetData( data );
wxTheClipboard->Close();
#endif // wxUSE_CLIPBOARD
}
void wxHyperlinkCtrl::OnSize(wxSizeEvent& WXUNUSED(event))
{
// update the position of the label in the screen respecting
// the selected align flag
Refresh();
}
#endif // wxUSE_HYPERLINKCTRL