wxTipWindow added and is now used by wxSimpleHelpProvider

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8318 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/tipwin.cpp

@@ -0,0 +1,184 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        src/generic/tipwin.cpp
+// Purpose:     implementation of wxTipWindow
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     10.09.00
+// RCS-ID:      $Id$
+// Copyright:   (c) 2000 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
+// Licence:     wxWindows license
+///////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#ifdef __GNUG__
+    #pragma implementation "tipwin.h"
+#endif
+
+// For compilers that support precompilatixon, includes "wx/wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/dcclient.h"
+#endif // WX_PRECOMP
+
+#include "wx/tipwin.h"
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+static const wxCoord TEXT_MARGIN_X = 3;
+static const wxCoord TEXT_MARGIN_Y = 3;
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// event tables
+// ----------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(wxTipWindow, wxFrame)
+    EVT_PAINT(wxTipWindow::OnPaint)
+
+    EVT_LEFT_DOWN(wxTipWindow::OnMouseClick)
+    EVT_RIGHT_DOWN(wxTipWindow::OnMouseClick)
+    EVT_MIDDLE_DOWN(wxTipWindow::OnMouseClick)
+END_EVENT_TABLE()
+
+// ----------------------------------------------------------------------------
+// wxTipWindow
+// ----------------------------------------------------------------------------
+
+wxTipWindow::wxTipWindow(wxWindow *parent,
+                         const wxString& text,
+                         wxCoord maxLength)
+           : wxFrame(parent, -1, _T(""),
+                     wxDefaultPosition, wxDefaultSize,
+                     wxNO_BORDER | wxFRAME_FLOAT_ON_PARENT)
+{
+    // set colours
+    SetForegroundColour(*wxBLACK);
+    SetBackgroundColour(wxColour(0xc3ffff));
+
+    // set position and size
+    int x, y;
+    wxGetMousePosition(&x, &y);
+    Move(x, y + 20);
+
+    Adjust(text, maxLength);
+
+    // capture mouse as we want to dismiss the window when it is clicked
+    CaptureMouse();
+
+    Show(TRUE);
+}
+
+void wxTipWindow::Adjust(const wxString& text, wxCoord maxLength)
+{
+    wxClientDC dc(this);
+    dc.SetFont(GetFont());
+
+    // calculate the length: we want each line be no longer than maxLength
+    // pixels and we only break lines at words boundary
+    wxString current;
+    wxCoord height, width,
+            widthMax = 0;
+    m_heightLine = 0;
+
+    bool breakLine = FALSE;
+    for ( const wxChar *p = text.c_str(); ; p++ )
+    {
+        if ( *p == _T('\n') || *p == _T('\0') )
+        {
+            dc.GetTextExtent(current, &width, &height);
+            if ( width > widthMax )
+                widthMax = width;
+
+            if ( height > m_heightLine )
+                m_heightLine = height;
+
+            m_textLines.Add(current);
+
+            if ( !*p )
+            {
+                // end of text
+                break;
+            }
+
+            current.clear();
+            breakLine = FALSE;
+        }
+        else if ( breakLine && (*p == _T(' ') || *p == _T('\t')) )
+        {
+            // word boundary - break the line here
+            m_textLines.Add(current);
+            current.clear();
+            breakLine = FALSE;
+        }
+        else // line goes on
+        {
+            current += *p;
+            dc.GetTextExtent(current, &width, &height);
+            if ( width > maxLength )
+                breakLine = TRUE;
+
+            if ( width > widthMax )
+                widthMax = width;
+
+            if ( height > m_heightLine )
+                m_heightLine = height;
+        }
+    }
+
+    // take into account the border size and the margins
+    SetClientSize(2*(TEXT_MARGIN_X + 1) + widthMax,
+                  2*(TEXT_MARGIN_Y + 1) + m_textLines.GetCount()*m_heightLine);
+}
+
+void wxTipWindow::OnPaint(wxPaintEvent& event)
+{
+    wxPaintDC dc(this);
+
+    wxRect rect;
+    wxSize size = GetClientSize();
+    rect.width = size.x;
+    rect.height = size.y;
+
+    // first filll the background
+    dc.SetBrush(wxBrush(GetBackgroundColour(), wxSOLID));
+    dc.SetPen(*wxBLACK_PEN);
+    dc.DrawRectangle(rect);
+
+    // and then draw the text line by line
+    dc.SetFont(GetFont());
+
+    wxPoint pt;
+    pt.x = TEXT_MARGIN_X;
+    pt.y = TEXT_MARGIN_Y;
+    size_t count = m_textLines.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        dc.DrawText(m_textLines[n], pt);
+
+        pt.y += m_heightLine;
+    }
+}
+
+void wxTipWindow::OnMouseClick(wxMouseEvent& event)
+{
+    ReleaseMouse();
+
+    Close();
+}