src/univ/ctrlrend.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/univ/ctrlrend.cpp
// Purpose:     wxControlRenderer implementation
// Author:      Vadim Zeitlin
// Modified by:
// Created:     15.08.00
// RCS-ID:      $Id$
// Copyright:   (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

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

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

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

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#ifndef WX_PRECOMP
    #include "wx/app.h"
    #include "wx/control.h"
    #include "wx/checklst.h"
    #include "wx/listbox.h"
    #include "wx/scrolbar.h"
    #include "wx/dc.h"
    #include "wx/log.h"
    #include "wx/gauge.h"
    #include "wx/image.h"
#endif // WX_PRECOMP

#include "wx/univ/theme.h"
#include "wx/univ/renderer.h"
#include "wx/univ/colschem.h"

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

wxRenderer::~wxRenderer()
{
}

// ----------------------------------------------------------------------------
// wxControlRenderer
// ----------------------------------------------------------------------------

wxControlRenderer::wxControlRenderer(wxWindow *window,
                                     wxDC& dc,
                                     wxRenderer *renderer)
                : m_dc(dc)
{
    m_window = window;
    m_renderer = renderer;

    wxSize size = m_window->GetClientSize();
    m_rect.x =
    m_rect.y = 0;
    m_rect.width = size.x;
    m_rect.height = size.y;
}

void wxControlRenderer::DrawLabel(const wxBitmap& bitmap,
                                  wxCoord marginX, wxCoord marginY)
{
    m_dc.SetBackgroundMode(wxTRANSPARENT);
    m_dc.SetFont(m_window->GetFont());
    m_dc.SetTextForeground(m_window->GetForegroundColour());

    wxString label = m_window->GetLabel();
    if ( !label.empty() || bitmap.Ok() )
    {
        wxRect rectLabel = m_rect;
        if ( bitmap.Ok() )
        {
            rectLabel.Inflate(-marginX, -marginY);
        }

        wxControl *ctrl = wxStaticCast(m_window, wxControl);

        m_renderer->DrawButtonLabel(m_dc,
                                    label,
                                    bitmap,
                                    rectLabel,
                                    m_window->GetStateFlags(),
                                    ctrl->GetAlignment(),
                                    ctrl->GetAccelIndex());
    }
}

void wxControlRenderer::DrawFrame()
{
    m_dc.SetFont(m_window->GetFont());
    m_dc.SetTextForeground(m_window->GetForegroundColour());
    m_dc.SetTextBackground(m_window->GetBackgroundColour());

    wxControl *ctrl = wxStaticCast(m_window, wxControl);

    m_renderer->DrawFrame(m_dc,
                          m_window->GetLabel(),
                          m_rect,
                          m_window->GetStateFlags(),
                          ctrl->GetAlignment(),
                          ctrl->GetAccelIndex());
}

void wxControlRenderer::DrawButtonBorder()
{
    int flags = m_window->GetStateFlags();

    m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect);

    // Why do this here?
    // m_renderer->DrawButtonSurface(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags );
}

void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap)
{
    int style = m_window->GetWindowStyle();
    DrawBitmap(m_dc, bitmap, m_rect,
               style & wxALIGN_MASK,
               style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT);
}

/* static */
void wxControlRenderer::DrawBitmap(wxDC &dc,
                                   const wxBitmap& bitmap,
                                   const wxRect& rect,
                                   int alignment,
                                   wxStretch stretch)
{
    // we may change the bitmap if we stretch it
    wxBitmap bmp = bitmap;
    if ( !bmp.Ok() )
        return;

    int width = bmp.GetWidth(),
        height = bmp.GetHeight();

    wxCoord x = 0,
            y = 0;
    if ( stretch & wxTILE )
    {
        // tile the bitmap
        for ( ; x < rect.width; x += width )
        {
            for ( y = 0; y < rect.height; y += height )
            {
                // no need to use mask here as we cover the entire window area
                dc.DrawBitmap(bmp, x, y);
            }
        }
    }
#if wxUSE_IMAGE
    else if ( stretch & wxEXPAND )
    {
        // stretch bitmap to fill the entire control
        bmp = wxBitmap(wxImage(bmp.ConvertToImage()).Scale(rect.width, rect.height));
    }
#endif // wxUSE_IMAGE
    else // not stretched, not tiled
    {
        if ( alignment & wxALIGN_RIGHT )
        {
            x = rect.GetRight() - width;
        }
        else if ( alignment & wxALIGN_CENTRE )
        {
            x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2;
        }
        else // alignment & wxALIGN_LEFT
        {
            x = rect.GetLeft();
        }

        if ( alignment & wxALIGN_BOTTOM )
        {
            y = rect.GetBottom() - height;
        }
        else if ( alignment & wxALIGN_CENTRE_VERTICAL )
        {
            y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2;
        }
        else // alignment & wxALIGN_TOP
        {
            y = rect.GetTop();
        }
    }

    // do draw it
    dc.DrawBitmap(bmp, x, y, true /* use mask */);
}

#if wxUSE_SCROLLBAR

void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar,
                                      int WXUNUSED(thumbPosOld))
{
    // we will only redraw the parts which must be redrawn and not everything
    wxRegion rgnUpdate = scrollbar->GetUpdateRegion();

    {
        wxRect rectUpdate = rgnUpdate.GetBox();
        wxLogTrace(_T("scrollbar"),
                   _T("%s redraw: update box is (%d, %d)-(%d, %d)"),
                   scrollbar->IsVertical() ? _T("vert") : _T("horz"),
                   rectUpdate.GetLeft(),
                   rectUpdate.GetTop(),
                   rectUpdate.GetRight(),
                   rectUpdate.GetBottom());

#if 0 //def WXDEBUG_SCROLLBAR
        static bool s_refreshDebug = false;
        if ( s_refreshDebug )
        {
            wxClientDC dc(wxConstCast(scrollbar, wxScrollBar));
            dc.SetBrush(*wxRED_BRUSH);
            dc.SetPen(*wxTRANSPARENT_PEN);
            dc.DrawRectangle(rectUpdate);

            // under Unix we use "--sync" X option for this
            #ifdef __WXMSW__
                ::GdiFlush();
                ::Sleep(200);
            #endif // __WXMSW__
        }
#endif // WXDEBUG_SCROLLBAR
    }

    wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL
                                                   : wxHORIZONTAL;

    // the shaft
    for ( int nBar = 0; nBar < 2; nBar++ )
    {
        wxScrollBar::Element elem =
            (wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar);

        wxRect rectBar = scrollbar->GetScrollbarRect(elem);

        if ( rgnUpdate.Contains(rectBar) )
        {
            wxLogTrace(_T("scrollbar"),
                       _T("drawing bar part %d at (%d, %d)-(%d, %d)"),
                       nBar + 1,
                       rectBar.GetLeft(),
                       rectBar.GetTop(),
                       rectBar.GetRight(),
                       rectBar.GetBottom());

            m_renderer->DrawScrollbarShaft(m_dc,
                                           orient,
                                           rectBar,
                                           scrollbar->GetState(elem));
        }
    }

    // arrows
    for ( int nArrow = 0; nArrow < 2; nArrow++ )
    {
        wxScrollBar::Element elem =
            (wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow);

        wxRect rectArrow = scrollbar->GetScrollbarRect(elem);
        if ( rgnUpdate.Contains(rectArrow) )
        {
            wxLogTrace(_T("scrollbar"),
                       _T("drawing arrow %d at (%d, %d)-(%d, %d)"),
                       nArrow + 1,
                       rectArrow.GetLeft(),
                       rectArrow.GetTop(),
                       rectArrow.GetRight(),
                       rectArrow.GetBottom());

            scrollbar->GetArrows().DrawArrow
            (
                (wxScrollArrows::Arrow)nArrow,
                m_dc,
                rectArrow,
                true // draw a scrollbar arrow, not just an arrow
            );
        }
    }

    // TODO: support for page arrows

    // and the thumb
    wxScrollBar::Element elem = wxScrollBar::Element_Thumb;
    wxRect rectThumb = scrollbar->GetScrollbarRect(elem);
    if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) )
    {
        wxLogTrace(_T("scrollbar"),
                   _T("drawing thumb at (%d, %d)-(%d, %d)"),
                   rectThumb.GetLeft(),
                   rectThumb.GetTop(),
                   rectThumb.GetRight(),
                   rectThumb.GetBottom());

        m_renderer->DrawScrollbarThumb(m_dc,
                                       orient,
                                       rectThumb,
                                       scrollbar->GetState(elem));
    }
}

#endif // wxUSE_SCROLLBAR

void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
{
    wxASSERT_MSG( x1 == x2 || y1 == y2,
                  _T("line must be either horizontal or vertical") );

    if ( x1 == x2 )
        m_renderer->DrawVerticalLine(m_dc, x1, y1, y2);
    else // horizontal
        m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2);
}

#if wxUSE_LISTBOX

void wxControlRenderer::DrawItems(const wxListBox *lbox,
                                  size_t itemFirst, size_t itemLast)
{
    DoDrawItems(lbox, itemFirst, itemLast);
}

void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
                                    size_t itemFirst, size_t itemLast,
#if wxUSE_CHECKLISTBOX
                                    bool isCheckLbox
#else
                                    bool WXUNUSED(isCheckLbox)
#endif
                                    )
{
    // prepare for the drawing: calc the initial position
    wxCoord lineHeight = lbox->GetLineHeight();

    // note that SetClippingRegion() needs the physical (unscrolled)
    // coordinates while we use the logical (scrolled) ones for the drawing
    // itself
    wxRect rect;
    wxSize size = lbox->GetClientSize();
    rect.width = size.x;
    rect.height = size.y;

    // keep the text inside the client rect or we will overwrite the vertical
    // scrollbar for the long strings
    m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1);

    // adjust the rect position now
    lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
    rect.y += itemFirst*lineHeight;
    rect.height = lineHeight;

    // the rect should go to the right visible border so adjust the width if x
    // is shifted (rightmost point should stay the same)
    rect.width -= rect.x;

    // we'll keep the text colour unchanged
    m_dc.SetTextForeground(lbox->GetForegroundColour());

    // an item should have the focused rect only when the lbox has focus, so
    // make sure that we never set wxCONTROL_FOCUSED flag if it doesn't
    int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed
                        ? lbox->GetCurrentItem()
                        : -1;
    for ( size_t n = itemFirst; n < itemLast; n++ )
    {
        int flags = 0;
        if ( (int)n == itemCurrent )
            flags |= wxCONTROL_FOCUSED;
        if ( lbox->IsSelected(n) )
            flags |= wxCONTROL_SELECTED;

#if wxUSE_CHECKLISTBOX
        if ( isCheckLbox )
        {
            wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox);
            if ( checklstbox->IsChecked(n) )
                flags |= wxCONTROL_CHECKED;

            m_renderer->DrawCheckItem(m_dc, lbox->GetString(n),
                                      wxNullBitmap,
                                      rect,
                                      flags);
        }
        else
#endif // wxUSE_CHECKLISTBOX
        {
            m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags);
        }

        rect.y += lineHeight;
    }
}

#endif // wxUSE_LISTBOX

#if wxUSE_CHECKLISTBOX

void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox,
                                       size_t itemFirst, size_t itemLast)
{
    DoDrawItems(lbox, itemFirst, itemLast, true);
}

#endif // wxUSE_CHECKLISTBOX

#if wxUSE_GAUGE

void wxControlRenderer::DrawProgressBar(const wxGauge *gauge)
{
    // draw background
    m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID));
    m_dc.SetPen(*wxTRANSPARENT_PEN);
    m_dc.DrawRectangle(m_rect);

    int max = gauge->GetRange();
    if ( !max )
    {
        // nothing to draw
        return;
    }

    // calc the filled rect
    int pos = gauge->GetValue();
    int left = max - pos;

    wxRect rect = m_rect;
    rect.Deflate(1); // FIXME this depends on the border width

    wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour()
                                        : wxTHEME_COLOUR(GAUGE);
    m_dc.SetBrush(wxBrush(col, wxSOLID));

    if ( gauge->IsSmooth() )
    {
        // just draw the rectangle in one go
        if ( gauge->IsVertical() )
        {
            // vert bars grow from bottom to top
            wxCoord dy = ((rect.height - 1) * left) / max;
            rect.y += dy;
            rect.height -= dy;
        }
        else // horizontal
        {
            // grow from left to right
            rect.width -= ((rect.width - 1) * left) / max;
        }

        m_dc.DrawRectangle(rect);
    }
    else // discrete
    {
        wxSize sizeStep = m_renderer->GetProgressBarStep();
        int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x;

        // we divide by it below!
        wxCHECK_RET( step, _T("invalid wxGauge step") );

        // round up to make the progress appear to start faster
        int lenTotal = gauge->IsVertical() ? rect.height : rect.width;
        int steps = ((lenTotal + step - 1) * pos) / (max * step);

        // calc the coords of one small rect
        wxCoord *px;
        wxCoord dx, dy;
        if ( gauge->IsVertical() )
        {
            // draw from bottom to top: so first set y to the bottom
            rect.y += rect.height - 1;

            // then adjust the height
            rect.height = step;

            // and then adjust y again to be what it should for the first rect
            rect.y -= rect.height;

            // we are going up
            step = -step;

            // remember that this will be the coord which will change
            px = &rect.y;

            dy = 1;
            dx = 0;
        }
        else // horizontal
        {
            // don't leave 2 empty pixels in the beginning
            rect.x--;

            px = &rect.x;
            rect.width = step;

            dy = 0;
            dx = 1;
        }

        for ( int n = 0; n < steps; n++ )
        {
            wxRect rectSegment = rect;
            rectSegment.Deflate(dx, dy);

            m_dc.DrawRectangle(rectSegment);

            *px += step;
            if ( *px < 1 )
            {
                // this can only happen for the last step of vertical gauge
                rect.height = *px - step - 1;
                *px = 1;
            }
            else if ( *px > lenTotal - step )
            {
                // this can only happen for the last step of horizontal gauge
                rect.width = lenTotal - *px - 1;
            }
        }
    }
}

#endif // wxUSE_GAUGE
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/univ/ctrlrend.cpp
	3	// Purpose: wxControlRenderer implementation
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 15.08.00
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
	9	// Licence: wxWindows licence
	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	// ===========================================================================
	13	// declarations
	14	// ===========================================================================
	15
	16	// ---------------------------------------------------------------------------
	17	// headers
	18	// ---------------------------------------------------------------------------
	19
	20	// For compilers that support precompilation, includes "wx.h".
	21	#include "wx/wxprec.h"
	22
	23	#ifdef __BORLANDC__
	24	#pragma hdrstop
	25	#endif
	26
	27	#ifndef WX_PRECOMP
	28	#include "wx/app.h"
	29	#include "wx/control.h"
	30	#include "wx/checklst.h"
	31	#include "wx/listbox.h"
	32	#include "wx/scrolbar.h"
	33	#include "wx/dc.h"
	34	#include "wx/log.h"
	35	#include "wx/gauge.h"
	36	#include "wx/image.h"
	37	#endif // WX_PRECOMP
	38
	39	#include "wx/univ/theme.h"
	40	#include "wx/univ/renderer.h"
	41	#include "wx/univ/colschem.h"
	42
	43	// ============================================================================
	44	// implementation
	45	// ============================================================================
	46
	47	wxRenderer::~wxRenderer()
	48	{
	49	}
	50
	51	// ----------------------------------------------------------------------------
	52	// wxControlRenderer
	53	// ----------------------------------------------------------------------------
	54
	55	wxControlRenderer::wxControlRenderer(wxWindow *window,
	56	wxDC& dc,
	57	wxRenderer *renderer)
	58	: m_dc(dc)
	59	{
	60	m_window = window;
	61	m_renderer = renderer;
	62
	63	wxSize size = m_window->GetClientSize();
	64	m_rect.x =
	65	m_rect.y = 0;
	66	m_rect.width = size.x;
	67	m_rect.height = size.y;
	68	}
	69
	70	void wxControlRenderer::DrawLabel(const wxBitmap& bitmap,
	71	wxCoord marginX, wxCoord marginY)
	72	{
	73	m_dc.SetBackgroundMode(wxTRANSPARENT);
	74	m_dc.SetFont(m_window->GetFont());
	75	m_dc.SetTextForeground(m_window->GetForegroundColour());
	76
	77	wxString label = m_window->GetLabel();
	78	if ( !label.empty() \|\| bitmap.Ok() )
	79	{
	80	wxRect rectLabel = m_rect;
	81	if ( bitmap.Ok() )
	82	{
	83	rectLabel.Inflate(-marginX, -marginY);
	84	}
	85
	86	wxControl *ctrl = wxStaticCast(m_window, wxControl);
	87
	88	m_renderer->DrawButtonLabel(m_dc,
	89	label,
	90	bitmap,
	91	rectLabel,
	92	m_window->GetStateFlags(),
	93	ctrl->GetAlignment(),
	94	ctrl->GetAccelIndex());
	95	}
	96	}
	97
	98	void wxControlRenderer::DrawFrame()
	99	{
	100	m_dc.SetFont(m_window->GetFont());
	101	m_dc.SetTextForeground(m_window->GetForegroundColour());
	102	m_dc.SetTextBackground(m_window->GetBackgroundColour());
	103
	104	wxControl *ctrl = wxStaticCast(m_window, wxControl);
	105
	106	m_renderer->DrawFrame(m_dc,
	107	m_window->GetLabel(),
	108	m_rect,
	109	m_window->GetStateFlags(),
	110	ctrl->GetAlignment(),
	111	ctrl->GetAccelIndex());
	112	}
	113
	114	void wxControlRenderer::DrawButtonBorder()
	115	{
	116	int flags = m_window->GetStateFlags();
	117
	118	m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect);
	119
	120	// Why do this here?
	121	// m_renderer->DrawButtonSurface(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags );
	122	}
	123
	124	void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap)
	125	{
	126	int style = m_window->GetWindowStyle();
	127	DrawBitmap(m_dc, bitmap, m_rect,
	128	style & wxALIGN_MASK,
	129	style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT);
	130	}
	131
	132	/* static */
	133	void wxControlRenderer::DrawBitmap(wxDC &dc,
	134	const wxBitmap& bitmap,
	135	const wxRect& rect,
	136	int alignment,
	137	wxStretch stretch)
	138	{
	139	// we may change the bitmap if we stretch it
	140	wxBitmap bmp = bitmap;
	141	if ( !bmp.Ok() )
	142	return;
	143
	144	int width = bmp.GetWidth(),
	145	height = bmp.GetHeight();
	146
	147	wxCoord x = 0,
	148	y = 0;
	149	if ( stretch & wxTILE )
	150	{
	151	// tile the bitmap
	152	for ( ; x < rect.width; x += width )
	153	{
	154	for ( y = 0; y < rect.height; y += height )
	155	{
	156	// no need to use mask here as we cover the entire window area
	157	dc.DrawBitmap(bmp, x, y);
	158	}
	159	}
	160	}
	161	#if wxUSE_IMAGE
	162	else if ( stretch & wxEXPAND )
	163	{
	164	// stretch bitmap to fill the entire control
	165	bmp = wxBitmap(wxImage(bmp.ConvertToImage()).Scale(rect.width, rect.height));
	166	}
	167	#endif // wxUSE_IMAGE
	168	else // not stretched, not tiled
	169	{
	170	if ( alignment & wxALIGN_RIGHT )
	171	{
	172	x = rect.GetRight() - width;
	173	}
	174	else if ( alignment & wxALIGN_CENTRE )
	175	{
	176	x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2;
	177	}
	178	else // alignment & wxALIGN_LEFT
	179	{
	180	x = rect.GetLeft();
	181	}
	182
	183	if ( alignment & wxALIGN_BOTTOM )
	184	{
	185	y = rect.GetBottom() - height;
	186	}
	187	else if ( alignment & wxALIGN_CENTRE_VERTICAL )
	188	{
	189	y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2;
	190	}
	191	else // alignment & wxALIGN_TOP
	192	{
	193	y = rect.GetTop();
	194	}
	195	}
	196
	197	// do draw it
	198	dc.DrawBitmap(bmp, x, y, true /* use mask */);
	199	}
	200
	201	#if wxUSE_SCROLLBAR
	202
	203	void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar,
	204	int WXUNUSED(thumbPosOld))
	205	{
	206	// we will only redraw the parts which must be redrawn and not everything
	207	wxRegion rgnUpdate = scrollbar->GetUpdateRegion();
	208
	209	{
	210	wxRect rectUpdate = rgnUpdate.GetBox();
	211	wxLogTrace(_T("scrollbar"),
	212	_T("%s redraw: update box is (%d, %d)-(%d, %d)"),
	213	scrollbar->IsVertical() ? _T("vert") : _T("horz"),
	214	rectUpdate.GetLeft(),
	215	rectUpdate.GetTop(),
	216	rectUpdate.GetRight(),
	217	rectUpdate.GetBottom());
	218
	219	#if 0 //def WXDEBUG_SCROLLBAR
	220	static bool s_refreshDebug = false;
	221	if ( s_refreshDebug )
	222	{
	223	wxClientDC dc(wxConstCast(scrollbar, wxScrollBar));
	224	dc.SetBrush(*wxRED_BRUSH);
	225	dc.SetPen(*wxTRANSPARENT_PEN);
	226	dc.DrawRectangle(rectUpdate);
	227
	228	// under Unix we use "--sync" X option for this
	229	#ifdef __WXMSW__
	230	::GdiFlush();
	231	::Sleep(200);
	232	#endif // __WXMSW__
	233	}
	234	#endif // WXDEBUG_SCROLLBAR
	235	}
	236
	237	wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL
	238	: wxHORIZONTAL;
	239
	240	// the shaft
	241	for ( int nBar = 0; nBar < 2; nBar++ )
	242	{
	243	wxScrollBar::Element elem =
	244	(wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar);
	245
	246	wxRect rectBar = scrollbar->GetScrollbarRect(elem);
	247
	248	if ( rgnUpdate.Contains(rectBar) )
	249	{
	250	wxLogTrace(_T("scrollbar"),
	251	_T("drawing bar part %d at (%d, %d)-(%d, %d)"),
	252	nBar + 1,
	253	rectBar.GetLeft(),
	254	rectBar.GetTop(),
	255	rectBar.GetRight(),
	256	rectBar.GetBottom());
	257
	258	m_renderer->DrawScrollbarShaft(m_dc,
	259	orient,
	260	rectBar,
	261	scrollbar->GetState(elem));
	262	}
	263	}
	264
	265	// arrows
	266	for ( int nArrow = 0; nArrow < 2; nArrow++ )
	267	{
	268	wxScrollBar::Element elem =
	269	(wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow);
	270
	271	wxRect rectArrow = scrollbar->GetScrollbarRect(elem);
	272	if ( rgnUpdate.Contains(rectArrow) )
	273	{
	274	wxLogTrace(_T("scrollbar"),
	275	_T("drawing arrow %d at (%d, %d)-(%d, %d)"),
	276	nArrow + 1,
	277	rectArrow.GetLeft(),
	278	rectArrow.GetTop(),
	279	rectArrow.GetRight(),
	280	rectArrow.GetBottom());
	281
	282	scrollbar->GetArrows().DrawArrow
	283	(
	284	(wxScrollArrows::Arrow)nArrow,
	285	m_dc,
	286	rectArrow,
	287	true // draw a scrollbar arrow, not just an arrow
	288	);
	289	}
	290	}
	291
	292	// TODO: support for page arrows
	293
	294	// and the thumb
	295	wxScrollBar::Element elem = wxScrollBar::Element_Thumb;
	296	wxRect rectThumb = scrollbar->GetScrollbarRect(elem);
	297	if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) )
	298	{
	299	wxLogTrace(_T("scrollbar"),
	300	_T("drawing thumb at (%d, %d)-(%d, %d)"),
	301	rectThumb.GetLeft(),
	302	rectThumb.GetTop(),
	303	rectThumb.GetRight(),
	304	rectThumb.GetBottom());
	305
	306	m_renderer->DrawScrollbarThumb(m_dc,
	307	orient,
	308	rectThumb,
	309	scrollbar->GetState(elem));
	310	}
	311	}
	312
	313	#endif // wxUSE_SCROLLBAR
	314
	315	void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
	316	{
	317	wxASSERT_MSG( x1 == x2 \|\| y1 == y2,
	318	_T("line must be either horizontal or vertical") );
	319
	320	if ( x1 == x2 )
	321	m_renderer->DrawVerticalLine(m_dc, x1, y1, y2);
	322	else // horizontal
	323	m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2);
	324	}
	325
	326	#if wxUSE_LISTBOX
	327
	328	void wxControlRenderer::DrawItems(const wxListBox *lbox,
	329	size_t itemFirst, size_t itemLast)
	330	{
	331	DoDrawItems(lbox, itemFirst, itemLast);
	332	}
	333
	334	void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
	335	size_t itemFirst, size_t itemLast,
	336	#if wxUSE_CHECKLISTBOX
	337	bool isCheckLbox
	338	#else
	339	bool WXUNUSED(isCheckLbox)
	340	#endif
	341	)
	342	{
	343	// prepare for the drawing: calc the initial position
	344	wxCoord lineHeight = lbox->GetLineHeight();
	345
	346	// note that SetClippingRegion() needs the physical (unscrolled)
	347	// coordinates while we use the logical (scrolled) ones for the drawing
	348	// itself
	349	wxRect rect;
	350	wxSize size = lbox->GetClientSize();
	351	rect.width = size.x;
	352	rect.height = size.y;
	353
	354	// keep the text inside the client rect or we will overwrite the vertical
	355	// scrollbar for the long strings
	356	m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1);
	357
	358	// adjust the rect position now
	359	lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
	360	rect.y += itemFirst*lineHeight;
	361	rect.height = lineHeight;
	362
	363	// the rect should go to the right visible border so adjust the width if x
	364	// is shifted (rightmost point should stay the same)
	365	rect.width -= rect.x;
	366
	367	// we'll keep the text colour unchanged
	368	m_dc.SetTextForeground(lbox->GetForegroundColour());
	369
	370	// an item should have the focused rect only when the lbox has focus, so
	371	// make sure that we never set wxCONTROL_FOCUSED flag if it doesn't
	372	int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed
	373	? lbox->GetCurrentItem()
	374	: -1;
	375	for ( size_t n = itemFirst; n < itemLast; n++ )
	376	{
	377	int flags = 0;
	378	if ( (int)n == itemCurrent )
	379	flags \|= wxCONTROL_FOCUSED;
	380	if ( lbox->IsSelected(n) )
	381	flags \|= wxCONTROL_SELECTED;
	382
	383	#if wxUSE_CHECKLISTBOX
	384	if ( isCheckLbox )
	385	{
	386	wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox);
	387	if ( checklstbox->IsChecked(n) )
	388	flags \|= wxCONTROL_CHECKED;
	389
	390	m_renderer->DrawCheckItem(m_dc, lbox->GetString(n),
	391	wxNullBitmap,
	392	rect,
	393	flags);
	394	}
	395	else
	396	#endif // wxUSE_CHECKLISTBOX
	397	{
	398	m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags);
	399	}
	400
	401	rect.y += lineHeight;
	402	}
	403	}
	404
	405	#endif // wxUSE_LISTBOX
	406
	407	#if wxUSE_CHECKLISTBOX
	408
	409	void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox,
	410	size_t itemFirst, size_t itemLast)
	411	{
	412	DoDrawItems(lbox, itemFirst, itemLast, true);
	413	}
	414
	415	#endif // wxUSE_CHECKLISTBOX
	416
	417	#if wxUSE_GAUGE
	418
	419	void wxControlRenderer::DrawProgressBar(const wxGauge *gauge)
	420	{
	421	// draw background
	422	m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID));
	423	m_dc.SetPen(*wxTRANSPARENT_PEN);
	424	m_dc.DrawRectangle(m_rect);
	425
	426	int max = gauge->GetRange();
	427	if ( !max )
	428	{
	429	// nothing to draw
	430	return;
	431	}
	432
	433	// calc the filled rect
	434	int pos = gauge->GetValue();
	435	int left = max - pos;
	436
	437	wxRect rect = m_rect;
	438	rect.Deflate(1); // FIXME this depends on the border width
	439
	440	wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour()
	441	: wxTHEME_COLOUR(GAUGE);
	442	m_dc.SetBrush(wxBrush(col, wxSOLID));
	443
	444	if ( gauge->IsSmooth() )
	445	{
	446	// just draw the rectangle in one go
	447	if ( gauge->IsVertical() )
	448	{
	449	// vert bars grow from bottom to top
	450	wxCoord dy = ((rect.height - 1) * left) / max;
	451	rect.y += dy;
	452	rect.height -= dy;
	453	}
	454	else // horizontal
	455	{
	456	// grow from left to right
	457	rect.width -= ((rect.width - 1) * left) / max;
	458	}
	459
	460	m_dc.DrawRectangle(rect);
	461	}
	462	else // discrete
	463	{
	464	wxSize sizeStep = m_renderer->GetProgressBarStep();
	465	int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x;
	466
	467	// we divide by it below!
	468	wxCHECK_RET( step, _T("invalid wxGauge step") );
	469
	470	// round up to make the progress appear to start faster
	471	int lenTotal = gauge->IsVertical() ? rect.height : rect.width;
	472	int steps = ((lenTotal + step - 1) * pos) / (max * step);
	473
	474	// calc the coords of one small rect
	475	wxCoord *px;
	476	wxCoord dx, dy;
	477	if ( gauge->IsVertical() )
	478	{
	479	// draw from bottom to top: so first set y to the bottom
	480	rect.y += rect.height - 1;
	481
	482	// then adjust the height
	483	rect.height = step;
	484
	485	// and then adjust y again to be what it should for the first rect
	486	rect.y -= rect.height;
	487
	488	// we are going up
	489	step = -step;
	490
	491	// remember that this will be the coord which will change
	492	px = &rect.y;
	493
	494	dy = 1;
	495	dx = 0;
	496	}
	497	else // horizontal
	498	{
	499	// don't leave 2 empty pixels in the beginning
	500	rect.x--;
	501
	502	px = &rect.x;
	503	rect.width = step;
	504
	505	dy = 0;
	506	dx = 1;
	507	}
	508
	509	for ( int n = 0; n < steps; n++ )
	510	{
	511	wxRect rectSegment = rect;
	512	rectSegment.Deflate(dx, dy);
	513
	514	m_dc.DrawRectangle(rectSegment);
	515
	516	*px += step;
	517	if ( *px < 1 )
	518	{
	519	// this can only happen for the last step of vertical gauge
	520	rect.height = *px - step - 1;
	521	*px = 1;
	522	}
	523	else if ( *px > lenTotal - step )
	524	{
	525	// this can only happen for the last step of horizontal gauge
	526	rect.width = lenTotal - *px - 1;
	527	}
	528	}
	529	}
	530	}
	531
	532	#endif // wxUSE_GAUGE