612 lines
18 KiB
C++
612 lines
18 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: samples/vscroll/vstest.cpp
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// Purpose: VScroll wxWidgets sample
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// Author: Vadim Zeitlin
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// Modified by: Brad Anderson
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// Created: 04/01/98
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// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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// for all others, include the necessary headers (this file is usually all you
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// need because it includes almost all "standard" wxWidgets headers)
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#include "wx/app.h"
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#include "wx/frame.h"
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#endif
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// we need to include the headers not included from wx/wx.h explicitly anyhow
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#include "wx/vscroll.h"
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// ----------------------------------------------------------------------------
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// resources
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// ----------------------------------------------------------------------------
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// the application icon (under Windows and OS/2 it is in resources)
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#ifndef wxHAS_IMAGES_IN_RESOURCES
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#include "../sample.xpm"
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#endif
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// ----------------------------------------------------------------------------
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// definitions
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// ----------------------------------------------------------------------------
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#define MAX_LINES 10000
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// Define a new application type, each program should derive a class from wxApp
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class VarScrollApp : public wxApp
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{
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public:
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// create our main window
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virtual bool OnInit();
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};
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// Define a new frame type: this is going to be our main frame
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class VarScrollFrame : public wxFrame
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{
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public:
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// ctor
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VarScrollFrame();
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// event handlers (these functions should _not_ be virtual)
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void OnQuit(wxCommandEvent& event);
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void OnModeVScroll(wxCommandEvent& event);
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void OnModeHScroll(wxCommandEvent& event);
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void OnModeHVScroll(wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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void OnSize(wxSizeEvent& event)
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{
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// show current size in the status bar
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#if wxUSE_STATUSBAR
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if ( m_frameStatusBar )
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{
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wxSize sz = GetClientSize();
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SetStatusText(wxString::Format(wxT("%dx%d"), sz.x, sz.y), 1);
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}
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#endif // wxUSE_STATUSBAR
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event.Skip();
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}
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private:
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// either a wxVScrolledWindow or a wxHVScrolled window, depending on current mode
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wxPanel *m_scrollWindow;
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// any class wishing to process wxWidgets events must use this macro
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wxDECLARE_EVENT_TABLE();
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};
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class VScrollWindow : public wxVScrolledWindow
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{
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public:
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VScrollWindow(wxFrame *frame) : wxVScrolledWindow(frame, wxID_ANY)
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{
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m_frame = frame;
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SetRowCount(MAX_LINES);
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int i;
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for ( i = 0; i < MAX_LINES; ++i )
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m_heights[i] = rand()%25+16; // low: 16; high: 40
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m_changed = true;
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}
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void OnIdle(wxIdleEvent&)
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{
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#if wxUSE_STATUSBAR
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m_frame->SetStatusText(wxString::Format
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(
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wxT("Page size = %d, pos = %d, max = %d"),
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GetScrollThumb(wxVERTICAL),
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GetScrollPos(wxVERTICAL),
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GetScrollRange(wxVERTICAL)
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));
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#endif // wxUSE_STATUSBAR
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m_changed = false;
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}
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void OnPaint(wxPaintEvent&)
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{
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wxPaintDC dc(this);
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dc.SetPen(*wxBLACK_PEN);
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const size_t lineFirst = GetVisibleBegin(),
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lineLast = GetVisibleEnd();
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const wxCoord hText = dc.GetCharHeight();
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wxSize clientSize = GetClientSize();
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wxCoord y = 0;
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for ( size_t line = lineFirst; line < lineLast; line++ )
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{
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dc.DrawLine(0, y, clientSize.GetWidth(), y);
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wxCoord hLine = OnGetRowHeight(line);
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dc.DrawText(wxString::Format(wxT("Line %lu"), (unsigned long)line),
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2, y + (hLine - hText) / 2);
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y += hLine;
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dc.DrawLine(0, y, 1000, y);
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}
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}
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void OnScroll(wxScrollWinEvent& event)
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{
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m_changed = true;
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event.Skip();
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}
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void OnMouse(wxMouseEvent& event)
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{
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if(event.LeftDown())
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CaptureMouse();
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else if(event.LeftUp())
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ReleaseMouse();
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event.Skip();
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}
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virtual wxCoord OnGetRowHeight(size_t n) const
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{
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wxASSERT( n < GetRowCount() );
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return m_heights[n];
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}
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private:
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wxFrame *m_frame;
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int m_heights[MAX_LINES];
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bool m_changed;
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wxDECLARE_EVENT_TABLE();
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};
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wxBEGIN_EVENT_TABLE(VScrollWindow, wxVScrolledWindow)
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EVT_IDLE(VScrollWindow::OnIdle)
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EVT_PAINT(VScrollWindow::OnPaint)
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EVT_SCROLLWIN(VScrollWindow::OnScroll)
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EVT_MOUSE_EVENTS(VScrollWindow::OnMouse)
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wxEND_EVENT_TABLE()
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class HScrollWindow : public wxHScrolledWindow
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{
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public:
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HScrollWindow(wxFrame *frame) : wxHScrolledWindow(frame, wxID_ANY)
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{
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m_frame = frame;
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SetColumnCount(MAX_LINES);
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int i;
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for ( i = 0; i < MAX_LINES; ++i )
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m_heights[i] = rand()%25+16; // low: 15; high: 40
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m_changed = true;
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}
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void OnIdle(wxIdleEvent&)
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{
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#if wxUSE_STATUSBAR
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m_frame->SetStatusText(wxString::Format
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(
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wxT("Page size = %d, pos = %d, max = %d"),
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GetScrollThumb(wxVERTICAL),
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GetScrollPos(wxVERTICAL),
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GetScrollRange(wxVERTICAL)
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));
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#endif // wxUSE_STATUSBAR
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m_changed = false;
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}
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void OnPaint(wxPaintEvent&)
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{
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wxPaintDC dc(this);
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dc.SetPen(*wxBLACK_PEN);
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const size_t lineFirst = GetVisibleBegin(),
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lineLast = GetVisibleEnd();
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const wxCoord hText = dc.GetCharHeight();
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wxSize clientSize = GetClientSize();
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wxCoord x = 0;
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for ( size_t line = lineFirst; line < lineLast; line++ )
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{
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dc.DrawLine(x, 0, x, clientSize.GetHeight());
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wxCoord wLine = OnGetColumnWidth(line);
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dc.DrawRotatedText(wxString::Format(wxT("Line %lu"), (unsigned long)line),
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x + (wLine - hText) / 2, clientSize.GetHeight() - 5, 90);
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x += wLine;
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dc.DrawLine(x, 0, x, 1000);
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}
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}
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void OnScroll(wxScrollWinEvent& event)
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{
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m_changed = true;
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event.Skip();
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}
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void OnMouse(wxMouseEvent& event)
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{
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if(event.LeftDown())
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CaptureMouse();
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else if(event.LeftUp())
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ReleaseMouse();
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event.Skip();
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}
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virtual wxCoord OnGetColumnWidth(size_t n) const
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{
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wxASSERT( n < GetColumnCount() );
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return m_heights[n];
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}
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private:
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wxFrame *m_frame;
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int m_heights[MAX_LINES];
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bool m_changed;
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wxDECLARE_EVENT_TABLE();
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};
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wxBEGIN_EVENT_TABLE(HScrollWindow, wxHScrolledWindow)
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EVT_IDLE(HScrollWindow::OnIdle)
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EVT_PAINT(HScrollWindow::OnPaint)
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EVT_SCROLLWIN(HScrollWindow::OnScroll)
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EVT_MOUSE_EVENTS(HScrollWindow::OnMouse)
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wxEND_EVENT_TABLE()
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class HVScrollWindow : public wxHVScrolledWindow
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{
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public:
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HVScrollWindow(wxFrame *frame) : wxHVScrolledWindow(frame, wxID_ANY)
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{
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m_frame = frame;
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SetRowColumnCount(MAX_LINES, MAX_LINES);
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int i;
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for ( i = 0; i < MAX_LINES; ++i )
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{
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m_heights[i] = rand()%30+31; // low: 30; high: 60
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m_widths[i] = rand()%30+61; // low: 60; high: 90
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}
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m_changed = true;
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}
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void OnIdle(wxIdleEvent&)
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{
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#if wxUSE_STATUSBAR
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m_frame->SetStatusText(wxString::Format
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(
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wxT("Page size = %d rows %d columns; pos = row: %d, column: %d; max = %d rows, %d columns"),
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GetScrollThumb(wxVERTICAL),
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GetScrollThumb(wxHORIZONTAL),
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GetScrollPos(wxVERTICAL),
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GetScrollPos(wxHORIZONTAL),
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GetScrollRange(wxVERTICAL),
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GetScrollRange(wxHORIZONTAL)
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));
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#endif // wxUSE_STATUSBAR
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m_changed = false;
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}
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void OnPaint(wxPaintEvent&)
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{
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wxPaintDC dc(this);
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dc.SetPen(*wxBLACK_PEN);
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const size_t rowFirst = GetVisibleRowsBegin(),
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rowLast = GetVisibleRowsEnd();
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const size_t columnFirst = GetVisibleColumnsBegin(),
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columnLast = GetVisibleColumnsEnd();
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const wxCoord hText = dc.GetCharHeight();
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wxSize clientSize = GetClientSize();
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wxCoord y = 0;
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wxCoord x = 0;
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for ( size_t row = rowFirst; row < rowLast; row++ )
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{
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wxCoord rowHeight = OnGetRowHeight(row);
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dc.DrawLine(0, y, clientSize.GetWidth(), y);
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x = 0;
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for ( size_t col = columnFirst; col < columnLast; col++ )
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{
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wxCoord colWidth = OnGetColumnWidth(col);
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if ( row == rowFirst )
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dc.DrawLine(x, 0, x, clientSize.GetHeight());
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dc.DrawText(wxString::Format(wxT("Row %lu"), (unsigned long)row),
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x + 2, y + rowHeight / 2 - hText);
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dc.DrawText(wxString::Format(wxT("Col %lu"), (unsigned long)col),
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x + 2, y + rowHeight / 2);
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x += colWidth;
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if ( row == rowFirst)
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dc.DrawLine(x, 0, x, clientSize.GetHeight());
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}
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y += rowHeight;
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dc.DrawLine(0, y, clientSize.GetWidth(), y);
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}
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}
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void OnScroll(wxScrollWinEvent& event)
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{
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m_changed = true;
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event.Skip();
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}
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void OnMouse(wxMouseEvent& event)
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{
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if(event.LeftDown())
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CaptureMouse();
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else if(event.LeftUp())
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ReleaseMouse();
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event.Skip();
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}
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virtual wxCoord OnGetRowHeight(size_t n) const
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{
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wxASSERT( n < GetRowCount() );
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return m_heights[n];
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}
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virtual wxCoord OnGetColumnWidth(size_t n) const
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{
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wxASSERT( n < GetColumnCount() );
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return m_widths[n];
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}
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private:
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wxFrame *m_frame;
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int m_heights[MAX_LINES];
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int m_widths[MAX_LINES];
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bool m_changed;
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wxDECLARE_EVENT_TABLE();
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};
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wxBEGIN_EVENT_TABLE(HVScrollWindow, wxHVScrolledWindow)
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EVT_IDLE(HVScrollWindow::OnIdle)
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EVT_PAINT(HVScrollWindow::OnPaint)
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EVT_SCROLLWIN(HVScrollWindow::OnScroll)
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EVT_MOUSE_EVENTS(HVScrollWindow::OnMouse)
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wxEND_EVENT_TABLE()
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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// IDs for the controls and the menu commands
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enum
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{
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// menu items
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VScroll_Quit = wxID_EXIT,
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// it is important for the id corresponding to the "About" command to have
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// this standard value as otherwise it won't be handled properly under Mac
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// (where it is special and put into the "Apple" menu)
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VScroll_About = wxID_ABOUT,
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VScroll_VScrollMode = wxID_HIGHEST + 1,
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VScroll_HScrollMode,
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VScroll_HVScrollMode
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};
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// ----------------------------------------------------------------------------
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// event tables and other macros for wxWidgets
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// ----------------------------------------------------------------------------
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// the event tables connect the wxWidgets events with the functions (event
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// handlers) which process them. It can be also done at run-time, but for the
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// simple menu events like this the static method is much simpler.
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wxBEGIN_EVENT_TABLE(VarScrollFrame, wxFrame)
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EVT_MENU(VScroll_Quit, VarScrollFrame::OnQuit)
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EVT_MENU(VScroll_VScrollMode, VarScrollFrame::OnModeVScroll)
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EVT_MENU(VScroll_HScrollMode, VarScrollFrame::OnModeHScroll)
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EVT_MENU(VScroll_HVScrollMode, VarScrollFrame::OnModeHVScroll)
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EVT_MENU(VScroll_About, VarScrollFrame::OnAbout)
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EVT_SIZE(VarScrollFrame::OnSize)
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wxEND_EVENT_TABLE()
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// Create a new application object: this macro will allow wxWidgets to create
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// the application object during program execution (it's better than using a
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// static object for many reasons) and also declares the accessor function
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// wxGetApp() which will return the reference of the right type (i.e. VarScrollApp and
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// not wxApp)
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IMPLEMENT_APP(VarScrollApp)
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// the application class
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// ----------------------------------------------------------------------------
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// 'Main program' equivalent: the program execution "starts" here
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bool VarScrollApp::OnInit()
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{
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if ( !wxApp::OnInit() )
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return false;
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// create the main application window
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VarScrollFrame *frame = new VarScrollFrame;
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// and show it (the frames, unlike simple controls, are not shown when
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// created initially)
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frame->Show(true);
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// ok
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return true;
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}
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// ----------------------------------------------------------------------------
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// main frame
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// ----------------------------------------------------------------------------
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// frame constructor
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VarScrollFrame::VarScrollFrame()
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: wxFrame(NULL,
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wxID_ANY,
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wxT("VScroll wxWidgets Sample"),
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wxDefaultPosition,
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wxSize(400, 350)),
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m_scrollWindow(NULL)
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{
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// set the frame icon
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SetIcon(wxICON(sample));
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#if wxUSE_MENUS
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// create a menu bar
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wxMenu *menuFile = new wxMenu;
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wxMenu *menuMode = new wxMenu;
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// the "About" item should be in the help menu
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wxMenu *menuHelp = new wxMenu;
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menuHelp->Append(VScroll_About, wxT("&About\tF1"), wxT("Show about dialog"));
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#ifdef wxHAS_RADIO_MENU_ITEMS
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menuMode->AppendRadioItem(VScroll_VScrollMode, wxT("&Vertical\tAlt-V"),
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wxT("Vertical scrolling only"));
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menuMode->AppendRadioItem(VScroll_HScrollMode, wxT("&Horizontal\tAlt-H"),
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wxT("Horizontal scrolling only"));
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menuMode->AppendRadioItem(VScroll_HVScrollMode,
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wxT("Hori&zontal/Vertical\tAlt-Z"),
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wxT("Horizontal and vertical scrolling"));
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menuMode->Check(VScroll_VScrollMode, true);
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#else
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menuMode->Append(VScroll_VScrollMode, wxT("&Vertical\tAlt-V"),
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wxT("Vertical scrolling only"));
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menuMode->Append(VScroll_HScrollMode, wxT("&Horizontal\tAlt-H"),
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wxT("Horizontal scrolling only"));
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menuMode->Append(VScroll_HVScrollMode, wxT("Hori&zontal/Vertical\tAlt-Z"),
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wxT("Horizontal and vertical scrolling"));
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#endif
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menuFile->Append(VScroll_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
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// now append the freshly created menu to the menu bar...
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wxMenuBar *menuBar = new wxMenuBar;
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menuBar->Append(menuFile, wxT("&File"));
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menuBar->Append(menuMode, wxT("&Mode"));
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menuBar->Append(menuHelp, wxT("&Help"));
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// ... and attach this menu bar to the frame
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SetMenuBar(menuBar);
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#endif // wxUSE_MENUS
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#if wxUSE_STATUSBAR
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// create a status bar just for fun (by default with 1 pane only)
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CreateStatusBar(2);
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SetStatusText(wxT("Welcome to wxWidgets!"));
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int widths[2];
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widths[0] = -1;
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widths[1] = 100;
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SetStatusWidths(2, widths);
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#endif // wxUSE_STATUSBAR
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// create our one and only child -- it will take our entire client area
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if ( menuMode->IsChecked(VScroll_VScrollMode) )
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m_scrollWindow = new VScrollWindow(this);
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else if ( menuMode->IsChecked(VScroll_HScrollMode) )
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m_scrollWindow = new HScrollWindow(this);
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else
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m_scrollWindow = new HVScrollWindow(this);
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}
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// ----------------------------------------------------------------------------
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// event handlers
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// ----------------------------------------------------------------------------
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void VarScrollFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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{
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|
// true is to force the frame to close
|
|
Close(true);
|
|
}
|
|
|
|
void VarScrollFrame::OnModeVScroll(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
if ( m_scrollWindow )
|
|
m_scrollWindow->Destroy();
|
|
|
|
m_scrollWindow = new VScrollWindow(this);
|
|
SendSizeEvent();
|
|
}
|
|
|
|
void VarScrollFrame::OnModeHScroll(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
if ( m_scrollWindow )
|
|
m_scrollWindow->Destroy();
|
|
|
|
m_scrollWindow = new HScrollWindow(this);
|
|
SendSizeEvent();
|
|
}
|
|
|
|
void VarScrollFrame::OnModeHVScroll(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
if ( m_scrollWindow )
|
|
m_scrollWindow->Destroy();
|
|
|
|
m_scrollWindow = new HVScrollWindow(this);
|
|
SendSizeEvent();
|
|
}
|
|
|
|
void VarScrollFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
wxMessageBox(wxT("VScroll shows how to implement scrolling with\n")
|
|
wxT("variable line widths and heights.\n")
|
|
wxT("(c) 2003 Vadim Zeitlin"),
|
|
wxT("About VScroll"),
|
|
wxOK | wxICON_INFORMATION,
|
|
this);
|
|
}
|