topluniv.cpp

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/////////////////////////////////////////////////////////////////////////////
// Name:        topluniv.cpp
// Author:      Vaclav Slavik
// Id:          $Id: topluniv.cpp,v 1.34 2004/08/10 13:08:40 ABX Exp $
// Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma implementation "univtoplevel.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#include "wx/defs.h"

#ifndef WX_PRECOMP
    #include "wx/dcclient.h"
    #include "wx/settings.h"
#endif

#include "wx/toplevel.h"
#include "wx/univ/renderer.h"
#include "wx/bitmap.h"
#include "wx/image.h"
#include "wx/cshelp.h"
#include "wx/evtloop.h"


// ----------------------------------------------------------------------------
// event tables
// ----------------------------------------------------------------------------

BEGIN_EVENT_TABLE(wxTopLevelWindow, wxTopLevelWindowNative)
    WX_EVENT_TABLE_INPUT_CONSUMER(wxTopLevelWindow)
    EVT_NC_PAINT(wxTopLevelWindow::OnNcPaint)
    EVT_MENU_RANGE(wxID_CLOSE_FRAME, wxID_RESTORE_FRAME, wxTopLevelWindow::OnSystemMenu)
END_EVENT_TABLE()

WX_FORWARD_TO_INPUT_CONSUMER(wxTopLevelWindow)

// ============================================================================
// implementation
// ============================================================================

int wxTopLevelWindow::ms_drawDecorations = -1;
int wxTopLevelWindow::ms_canIconize = -1;

void wxTopLevelWindow::Init()
{
    m_isActive = false;
    m_windowStyle = 0;
    m_pressedButton = 0;
}

bool wxTopLevelWindow::Create(wxWindow *parent,
                              wxWindowID id,
                              const wxString& title,
                              const wxPoint& pos,
                              const wxSize& size,
                              long style,
                              const wxString &name)
{
    // init them to avoid compiler warnings
    long styleOrig = 0,
         exstyleOrig = 0;

    if ( ms_drawDecorations == -1 )
    {
        ms_drawDecorations = 
            !wxSystemSettings::HasFeature(wxSYS_CAN_DRAW_FRAME_DECORATIONS) 
            || wxGetEnv(wxT("WXDECOR"), NULL);
        // FIXME -- wxUniv should provide a way to force non-native decorations!
        //          $WXDECOR is just a hack in absence of better wxUniv solution
    }

    if ( ms_canIconize == -1 )
    {
        ms_canIconize = wxSystemSettings::HasFeature(wxSYS_CAN_ICONIZE_FRAME);
    }

    if ( ms_drawDecorations )
    {
        CreateInputHandler(wxINP_HANDLER_TOPLEVEL);

        styleOrig = style;
        exstyleOrig = GetExtraStyle();
        style &= ~(wxCAPTION | wxMINIMIZE_BOX | wxMAXIMIZE_BOX |
                   wxSYSTEM_MENU | wxRESIZE_BORDER | wxFRAME_TOOL_WINDOW |
                   wxTHICK_FRAME);
        style |= wxSIMPLE_BORDER;
        SetExtraStyle(exstyleOrig &
                      ~(wxFRAME_EX_CONTEXTHELP | wxDIALOG_EX_CONTEXTHELP));
    }

    if ( !wxTopLevelWindowNative::Create(parent, id, title, pos,
                                         size, style, name) )
        return false;

    if ( ms_drawDecorations )
    {
        m_windowStyle = styleOrig;
        m_exStyle = exstyleOrig;
    }

    return true;
}

bool wxTopLevelWindow::ShowFullScreen(bool show, long style)
{
    if ( show == IsFullScreen() ) return false;

    if ( ms_drawDecorations )
    {
        if ( show )
        {
            m_fsSavedStyle = m_windowStyle;
            if ( style & wxFULLSCREEN_NOBORDER )
                m_windowStyle |= wxSIMPLE_BORDER;
            if ( style & wxFULLSCREEN_NOCAPTION )
                m_windowStyle &= ~wxCAPTION;
        }
        else
        {
            m_windowStyle = m_fsSavedStyle;
        }
    }

    return wxTopLevelWindowNative::ShowFullScreen(show, style);
}

long wxTopLevelWindow::GetDecorationsStyle() const
{
    long style = 0;

    if ( m_windowStyle & wxCAPTION )
    {
        style |= wxTOPLEVEL_TITLEBAR | wxTOPLEVEL_BUTTON_CLOSE;
        if ( (m_windowStyle & wxMINIMIZE_BOX) && ms_canIconize )
            style |= wxTOPLEVEL_BUTTON_ICONIZE;
        if ( m_windowStyle & wxMAXIMIZE_BOX )
        {
            if ( IsMaximized() )
                style |= wxTOPLEVEL_BUTTON_RESTORE;
            else
                style |= wxTOPLEVEL_BUTTON_MAXIMIZE;
        }
#if wxUSE_HELP
        if ( m_exStyle & (wxFRAME_EX_CONTEXTHELP | wxDIALOG_EX_CONTEXTHELP))
            style |= wxTOPLEVEL_BUTTON_HELP;
#endif
    }
    if ( (m_windowStyle & (wxSIMPLE_BORDER | wxNO_BORDER)) == 0 )
        style |= wxTOPLEVEL_BORDER;
    if ( m_windowStyle & (wxRESIZE_BORDER | wxTHICK_FRAME) )
        style |= wxTOPLEVEL_RESIZEABLE;

    if ( IsMaximized() )
        style |= wxTOPLEVEL_MAXIMIZED;
    if ( GetIcon().Ok() )
        style |= wxTOPLEVEL_ICON;
    if ( m_isActive )
        style |= wxTOPLEVEL_ACTIVE;

    return style;
}

void wxTopLevelWindow::RefreshTitleBar()
{
    wxNcPaintEvent event(GetId());
    event.SetEventObject(this);
    GetEventHandler()->ProcessEvent(event);
}

// ----------------------------------------------------------------------------
// client area handling
// ----------------------------------------------------------------------------

wxPoint wxTopLevelWindow::GetClientAreaOrigin() const
{
    if ( ms_drawDecorations )
    {
        int w, h;
        wxTopLevelWindowNative::DoGetClientSize(&w, &h);
        wxRect rect = wxRect(wxTopLevelWindowNative::GetClientAreaOrigin(),
                             wxSize(w, h));
        rect = m_renderer->GetFrameClientArea(rect,
                                              GetDecorationsStyle());
        return rect.GetPosition();
    }
    else
    {
        return wxTopLevelWindowNative::GetClientAreaOrigin();
    }
}

void wxTopLevelWindow::DoGetClientSize(int *width, int *height) const
{
    if ( ms_drawDecorations )
    {
        int w, h;
        wxTopLevelWindowNative::DoGetClientSize(&w, &h);
        wxRect rect = wxRect(wxTopLevelWindowNative::GetClientAreaOrigin(),
                             wxSize(w, h));
        rect = m_renderer->GetFrameClientArea(rect,
                                              GetDecorationsStyle());
        if ( width )
            *width = rect.width;
        if ( height )
            *height = rect.height;
    }
    else
        wxTopLevelWindowNative::DoGetClientSize(width, height);
}

void wxTopLevelWindow::DoSetClientSize(int width, int height)
{
    if ( ms_drawDecorations )
    {
        wxSize size = m_renderer->GetFrameTotalSize(wxSize(width, height),
                                               GetDecorationsStyle());
        wxTopLevelWindowNative::DoSetClientSize(size.x, size.y);
    }
    else
        wxTopLevelWindowNative::DoSetClientSize(width, height);
}

void wxTopLevelWindow::OnNcPaint(wxNcPaintEvent& event)
{
    if ( !ms_drawDecorations || !m_renderer )
        event.Skip();
    else
    {
        // get the window rect
        wxRect rect;
        wxSize size = GetSize();
        rect.x =
        rect.y = 0;
        rect.width = size.x;
        rect.height = size.y;

        wxWindowDC dc(this);
        m_renderer->DrawFrameTitleBar(dc, rect,
                                      GetTitle(), m_titlebarIcon,
                                      GetDecorationsStyle(),
                                      m_pressedButton,
                                      wxCONTROL_PRESSED);
    }
}

long wxTopLevelWindow::HitTest(const wxPoint& pt) const
{
    int w, h;
    wxTopLevelWindowNative::DoGetClientSize(&w, &h);
    wxRect rect(wxTopLevelWindowNative::GetClientAreaOrigin(), wxSize(w, h));

    return m_renderer->HitTestFrame(rect, pt+GetClientAreaOrigin(), GetDecorationsStyle());
}

int wxTopLevelWindow::GetMinWidth() const
{
    if ( ms_drawDecorations )
    {
        return wxMax(wxTopLevelWindowNative::GetMinWidth(),
                     m_renderer->GetFrameMinSize(GetDecorationsStyle()).x);
    }
    else
        return wxTopLevelWindowNative::GetMinWidth();
}

int wxTopLevelWindow::GetMinHeight() const
{
    if ( ms_drawDecorations )
    {
        return wxMax(wxTopLevelWindowNative::GetMinHeight(),
                     m_renderer->GetFrameMinSize(GetDecorationsStyle()).y);
    }
    else
        return wxTopLevelWindowNative::GetMinHeight();
}

// ----------------------------------------------------------------------------
// icons
// ----------------------------------------------------------------------------

void wxTopLevelWindow::SetIcons(const wxIconBundle& icons)
{
    wxTopLevelWindowNative::SetIcons(icons);

    if ( ms_drawDecorations && m_renderer )
    {
        wxSize size = m_renderer->GetFrameIconSize();
        const wxIcon& icon = icons.GetIcon( size );

        if ( !icon.Ok() || size.x == wxDefaultCoord  )
            m_titlebarIcon = icon;
        else
        {
            wxBitmap bmp1;
            bmp1.CopyFromIcon(icon);
            if ( !bmp1.Ok() )
                m_titlebarIcon = wxNullIcon;
            else if ( bmp1.GetWidth() == size.x && bmp1.GetHeight() == size.y )
                m_titlebarIcon = icon;
            else
            {
                wxImage img = bmp1.ConvertToImage();
                img.Rescale(size.x, size.y);
                m_titlebarIcon.CopyFromBitmap(wxBitmap(img));
            }
        }
    }
}

// ----------------------------------------------------------------------------
// interactive manipulation
// ----------------------------------------------------------------------------


static bool wxGetResizingCursor(long hitTestResult, wxCursor& cursor)
{
    if ( hitTestResult & wxHT_TOPLEVEL_ANY_BORDER )
    {
        switch (hitTestResult)
        {
            case wxHT_TOPLEVEL_BORDER_N:
            case wxHT_TOPLEVEL_BORDER_S:
                cursor = wxCursor(wxCURSOR_SIZENS);
                break;
            case wxHT_TOPLEVEL_BORDER_W:
            case wxHT_TOPLEVEL_BORDER_E:
                cursor = wxCursor(wxCURSOR_SIZEWE);
                break;
            case wxHT_TOPLEVEL_BORDER_NE:
            case wxHT_TOPLEVEL_BORDER_SW:
                cursor = wxCursor(wxCURSOR_SIZENESW);
                break;
            case wxHT_TOPLEVEL_BORDER_NW:
            case wxHT_TOPLEVEL_BORDER_SE:
                cursor = wxCursor(wxCURSOR_SIZENWSE);
                break;
            default:
                return false;
                #if 0
                // not rachable due to earlier return
                break;
                #endif
        }
        return true;
    }
    
    return false;
}

#define wxINTERACTIVE_RESIZE_DIR \
          (wxINTERACTIVE_RESIZE_W | wxINTERACTIVE_RESIZE_E | \
           wxINTERACTIVE_RESIZE_S | wxINTERACTIVE_RESIZE_N)

struct wxInteractiveMoveData
{
    wxTopLevelWindow     *m_window;
    wxEventLoop          *m_evtLoop;
    int                   m_flags;
    wxRect                m_rect;
    wxRect                m_rectOrig;
    wxPoint               m_pos;
    wxSize                m_minSize, m_maxSize;
    bool                  m_sizingCursor;
};

class wxInteractiveMoveHandler : public wxEvtHandler
{
public:
    wxInteractiveMoveHandler(wxInteractiveMoveData& data) : m_data(data) {}
    
private:
    DECLARE_EVENT_TABLE()
    void OnMouseMove(wxMouseEvent& event);
    void OnMouseDown(wxMouseEvent& event);
    void OnMouseUp(wxMouseEvent& event);
    void OnKeyDown(wxKeyEvent& event);

    wxInteractiveMoveData& m_data;
};

BEGIN_EVENT_TABLE(wxInteractiveMoveHandler, wxEvtHandler)
    EVT_MOTION(wxInteractiveMoveHandler::OnMouseMove)
    EVT_LEFT_DOWN(wxInteractiveMoveHandler::OnMouseDown)
    EVT_LEFT_UP(wxInteractiveMoveHandler::OnMouseUp)
    EVT_KEY_DOWN(wxInteractiveMoveHandler::OnKeyDown)
END_EVENT_TABLE()


static inline LINKAGEMODE 
void wxApplyResize(wxInteractiveMoveData& data, const wxPoint& diff)
{
    if ( data.m_flags & wxINTERACTIVE_RESIZE_W )
    {
        data.m_rect.x += diff.x;
        data.m_rect.width -= diff.x;
    }
    else if ( data.m_flags & wxINTERACTIVE_RESIZE_E )
    {
        data.m_rect.width += diff.x;
    }
    if ( data.m_flags & wxINTERACTIVE_RESIZE_N )
    {
        data.m_rect.y += diff.y;
        data.m_rect.height -= diff.y;
    }
    else if ( data.m_flags & wxINTERACTIVE_RESIZE_S )
    {
        data.m_rect.height += diff.y;
    }
    
    if ( data.m_minSize.x != wxDefaultCoord && data.m_rect.width < data.m_minSize.x )
    {
        if ( data.m_flags & wxINTERACTIVE_RESIZE_W )
            data.m_rect.x -= data.m_minSize.x - data.m_rect.width;
        data.m_rect.width = data.m_minSize.x;
    }
    if ( data.m_maxSize.x != wxDefaultCoord && data.m_rect.width > data.m_maxSize.x )
    {
        if ( data.m_flags & wxINTERACTIVE_RESIZE_W )
            data.m_rect.x -= data.m_minSize.x - data.m_rect.width;
        data.m_rect.width = data.m_maxSize.x;
    }
    if ( data.m_minSize.y != wxDefaultCoord && data.m_rect.height < data.m_minSize.y )
    {
        if ( data.m_flags & wxINTERACTIVE_RESIZE_N )
            data.m_rect.y -= data.m_minSize.y - data.m_rect.height;
        data.m_rect.height = data.m_minSize.y;
    }
    if ( data.m_maxSize.y != wxDefaultCoord && data.m_rect.height > data.m_maxSize.y )
    {
        if ( data.m_flags & wxINTERACTIVE_RESIZE_N )
            data.m_rect.y -= data.m_minSize.y - data.m_rect.height;
        data.m_rect.height = data.m_maxSize.y;
    }
}

void wxInteractiveMoveHandler::OnMouseMove(wxMouseEvent& event)
{
    if ( m_data.m_flags & wxINTERACTIVE_WAIT_FOR_INPUT )
        event.Skip();

    else if ( m_data.m_flags & wxINTERACTIVE_MOVE )
    {
        wxPoint diff = wxGetMousePosition() - m_data.m_pos;
        m_data.m_rect = m_data.m_rectOrig;
        m_data.m_rect.Offset(diff);
        m_data.m_window->Move(m_data.m_rect.GetPosition());
    }