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()
{
    m_dc.SetBackgroundMode(wxTRANSPARENT);
    m_dc.SetFont(m_window->GetFont());
    m_dc.SetTextForeground(m_window->GetForegroundColour());

    wxString label = m_window->GetLabel();
    if ( !label.empty() )
    {
        wxControl *ctrl = wxStaticCast(m_window, wxControl);

        m_renderer->DrawLabel(m_dc,
                              label,
                              m_rect,
                              m_window->GetStateFlags(),
                              ctrl->GetAlignment(),
                              ctrl->GetAccelIndex());
    }
}

void wxControlRenderer::DrawButtonLabel(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.IsOk() )
    {
        wxRect rectLabel = m_rect;
        if ( bitmap.IsOk() )
        {
            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.IsOk() )
        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(wxT("scrollbar"),
                   wxT("%s redraw: update box is (%d, %d)-(%d, %d)"),
                   scrollbar->IsVertical() ? wxT("vert") : wxT("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(wxT("scrollbar"),
                       wxT("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(wxT("scrollbar"),
                       wxT("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(wxT("scrollbar"),
                   wxT("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,
                  wxT("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, wxT("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()
	71	{
	72	m_dc.SetBackgroundMode(wxTRANSPARENT);
	73	m_dc.SetFont(m_window->GetFont());
	74	m_dc.SetTextForeground(m_window->GetForegroundColour());
	75
	76	wxString label = m_window->GetLabel();
	77	if ( !label.empty() )
	78	{
	79	wxControl *ctrl = wxStaticCast(m_window, wxControl);
	80
	81	m_renderer->DrawLabel(m_dc,
	82	label,
	83	m_rect,
	84	m_window->GetStateFlags(),
	85	ctrl->GetAlignment(),
	86	ctrl->GetAccelIndex());
	87	}
	88	}
	89
	90	void wxControlRenderer::DrawButtonLabel(const wxBitmap& bitmap,
	91	wxCoord marginX, wxCoord marginY)
	92	{
	93	m_dc.SetBackgroundMode(wxTRANSPARENT);
	94	m_dc.SetFont(m_window->GetFont());
	95	m_dc.SetTextForeground(m_window->GetForegroundColour());
	96
	97	wxString label = m_window->GetLabel();
	98	if ( !label.empty() \|\| bitmap.IsOk() )
	99	{
	100	wxRect rectLabel = m_rect;
	101	if ( bitmap.IsOk() )
	102	{
	103	rectLabel.Inflate(-marginX, -marginY);
	104	}
	105
	106	wxControl *ctrl = wxStaticCast(m_window, wxControl);
	107
	108	m_renderer->DrawButtonLabel(m_dc,
	109	label,
	110	bitmap,
	111	rectLabel,
	112	m_window->GetStateFlags(),
	113	ctrl->GetAlignment(),
	114	ctrl->GetAccelIndex());
	115	}
	116	}
	117
	118	void wxControlRenderer::DrawFrame()
	119	{
	120	m_dc.SetFont(m_window->GetFont());
	121	m_dc.SetTextForeground(m_window->GetForegroundColour());
	122	m_dc.SetTextBackground(m_window->GetBackgroundColour());
	123
	124	wxControl *ctrl = wxStaticCast(m_window, wxControl);
	125
	126	m_renderer->DrawFrame(m_dc,
	127	m_window->GetLabel(),
	128	m_rect,
	129	m_window->GetStateFlags(),
	130	ctrl->GetAlignment(),
	131	ctrl->GetAccelIndex());
	132	}
	133
	134	void wxControlRenderer::DrawButtonBorder()
	135	{
	136	int flags = m_window->GetStateFlags();
	137
	138	m_renderer->DrawButtonBorder(m_dc, m_rect, flags, &m_rect);
	139
	140	// Why do this here?
	141	// m_renderer->DrawButtonSurface(m_dc, wxTHEME_BG_COLOUR(m_window), m_rect, flags );
	142	}
	143
	144	void wxControlRenderer::DrawBitmap(const wxBitmap& bitmap)
	145	{
	146	int style = m_window->GetWindowStyle();
	147	DrawBitmap(m_dc, bitmap, m_rect,
	148	style & wxALIGN_MASK,
	149	style & wxBI_EXPAND ? wxEXPAND : wxSTRETCH_NOT);
	150	}
	151
	152	/* static */
	153	void wxControlRenderer::DrawBitmap(wxDC &dc,
	154	const wxBitmap& bitmap,
	155	const wxRect& rect,
	156	int alignment,
	157	wxStretch stretch)
	158	{
	159	// we may change the bitmap if we stretch it
	160	wxBitmap bmp = bitmap;
	161	if ( !bmp.IsOk() )
	162	return;
	163
	164	int width = bmp.GetWidth(),
	165	height = bmp.GetHeight();
	166
	167	wxCoord x = 0,
	168	y = 0;
	169	if ( stretch & wxTILE )
	170	{
	171	// tile the bitmap
	172	for ( ; x < rect.width; x += width )
	173	{
	174	for ( y = 0; y < rect.height; y += height )
	175	{
	176	// no need to use mask here as we cover the entire window area
	177	dc.DrawBitmap(bmp, x, y);
	178	}
	179	}
	180	}
	181	#if wxUSE_IMAGE
	182	else if ( stretch & wxEXPAND )
	183	{
	184	// stretch bitmap to fill the entire control
	185	bmp = wxBitmap(wxImage(bmp.ConvertToImage()).Scale(rect.width, rect.height));
	186	}
	187	#endif // wxUSE_IMAGE
	188	else // not stretched, not tiled
	189	{
	190	if ( alignment & wxALIGN_RIGHT )
	191	{
	192	x = rect.GetRight() - width;
	193	}
	194	else if ( alignment & wxALIGN_CENTRE )
	195	{
	196	x = (rect.GetLeft() + rect.GetRight() - width + 1) / 2;
	197	}
	198	else // alignment & wxALIGN_LEFT
	199	{
	200	x = rect.GetLeft();
	201	}
	202
	203	if ( alignment & wxALIGN_BOTTOM )
	204	{
	205	y = rect.GetBottom() - height;
	206	}
	207	else if ( alignment & wxALIGN_CENTRE_VERTICAL )
	208	{
	209	y = (rect.GetTop() + rect.GetBottom() - height + 1) / 2;
	210	}
	211	else // alignment & wxALIGN_TOP
	212	{
	213	y = rect.GetTop();
	214	}
	215	}
	216
	217	// do draw it
	218	dc.DrawBitmap(bmp, x, y, true /* use mask */);
	219	}
	220
	221	#if wxUSE_SCROLLBAR
	222
	223	void wxControlRenderer::DrawScrollbar(const wxScrollBar *scrollbar,
	224	int WXUNUSED(thumbPosOld))
	225	{
	226	// we will only redraw the parts which must be redrawn and not everything
	227	wxRegion rgnUpdate = scrollbar->GetUpdateRegion();
	228
	229	{
	230	wxRect rectUpdate = rgnUpdate.GetBox();
	231	wxLogTrace(wxT("scrollbar"),
	232	wxT("%s redraw: update box is (%d, %d)-(%d, %d)"),
	233	scrollbar->IsVertical() ? wxT("vert") : wxT("horz"),
	234	rectUpdate.GetLeft(),
	235	rectUpdate.GetTop(),
	236	rectUpdate.GetRight(),
	237	rectUpdate.GetBottom());
	238
	239	#if 0 //def WXDEBUG_SCROLLBAR
	240	static bool s_refreshDebug = false;
	241	if ( s_refreshDebug )
	242	{
	243	wxClientDC dc(wxConstCast(scrollbar, wxScrollBar));
	244	dc.SetBrush(*wxRED_BRUSH);
	245	dc.SetPen(*wxTRANSPARENT_PEN);
	246	dc.DrawRectangle(rectUpdate);
	247
	248	// under Unix we use "--sync" X option for this
	249	#ifdef __WXMSW__
	250	::GdiFlush();
	251	::Sleep(200);
	252	#endif // __WXMSW__
	253	}
	254	#endif // WXDEBUG_SCROLLBAR
	255	}
	256
	257	wxOrientation orient = scrollbar->IsVertical() ? wxVERTICAL
	258	: wxHORIZONTAL;
	259
	260	// the shaft
	261	for ( int nBar = 0; nBar < 2; nBar++ )
	262	{
	263	wxScrollBar::Element elem =
	264	(wxScrollBar::Element)(wxScrollBar::Element_Bar_1 + nBar);
	265
	266	wxRect rectBar = scrollbar->GetScrollbarRect(elem);
	267
	268	if ( rgnUpdate.Contains(rectBar) )
	269	{
	270	wxLogTrace(wxT("scrollbar"),
	271	wxT("drawing bar part %d at (%d, %d)-(%d, %d)"),
	272	nBar + 1,
	273	rectBar.GetLeft(),
	274	rectBar.GetTop(),
	275	rectBar.GetRight(),
	276	rectBar.GetBottom());
	277
	278	m_renderer->DrawScrollbarShaft(m_dc,
	279	orient,
	280	rectBar,
	281	scrollbar->GetState(elem));
	282	}
	283	}
	284
	285	// arrows
	286	for ( int nArrow = 0; nArrow < 2; nArrow++ )
	287	{
	288	wxScrollBar::Element elem =
	289	(wxScrollBar::Element)(wxScrollBar::Element_Arrow_Line_1 + nArrow);
	290
	291	wxRect rectArrow = scrollbar->GetScrollbarRect(elem);
	292	if ( rgnUpdate.Contains(rectArrow) )
	293	{
	294	wxLogTrace(wxT("scrollbar"),
	295	wxT("drawing arrow %d at (%d, %d)-(%d, %d)"),
	296	nArrow + 1,
	297	rectArrow.GetLeft(),
	298	rectArrow.GetTop(),
	299	rectArrow.GetRight(),
	300	rectArrow.GetBottom());
	301
	302	scrollbar->GetArrows().DrawArrow
	303	(
	304	(wxScrollArrows::Arrow)nArrow,
	305	m_dc,
	306	rectArrow,
	307	true // draw a scrollbar arrow, not just an arrow
	308	);
	309	}
	310	}
	311
	312	// TODO: support for page arrows
	313
	314	// and the thumb
	315	wxScrollBar::Element elem = wxScrollBar::Element_Thumb;
	316	wxRect rectThumb = scrollbar->GetScrollbarRect(elem);
	317	if ( rectThumb.width && rectThumb.height && rgnUpdate.Contains(rectThumb) )
	318	{
	319	wxLogTrace(wxT("scrollbar"),
	320	wxT("drawing thumb at (%d, %d)-(%d, %d)"),
	321	rectThumb.GetLeft(),
	322	rectThumb.GetTop(),
	323	rectThumb.GetRight(),
	324	rectThumb.GetBottom());
	325
	326	m_renderer->DrawScrollbarThumb(m_dc,
	327	orient,
	328	rectThumb,
	329	scrollbar->GetState(elem));
	330	}
	331	}
	332
	333	#endif // wxUSE_SCROLLBAR
	334
	335	void wxControlRenderer::DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
	336	{
	337	wxASSERT_MSG( x1 == x2 \|\| y1 == y2,
	338	wxT("line must be either horizontal or vertical") );
	339
	340	if ( x1 == x2 )
	341	m_renderer->DrawVerticalLine(m_dc, x1, y1, y2);
	342	else // horizontal
	343	m_renderer->DrawHorizontalLine(m_dc, y1, x1, x2);
	344	}
	345
	346	#if wxUSE_LISTBOX
	347
	348	void wxControlRenderer::DrawItems(const wxListBox *lbox,
	349	size_t itemFirst, size_t itemLast)
	350	{
	351	DoDrawItems(lbox, itemFirst, itemLast);
	352	}
	353
	354	void wxControlRenderer::DoDrawItems(const wxListBox *lbox,
	355	size_t itemFirst, size_t itemLast,
	356	#if wxUSE_CHECKLISTBOX
	357	bool isCheckLbox
	358	#else
	359	bool WXUNUSED(isCheckLbox)
	360	#endif
	361	)
	362	{
	363	// prepare for the drawing: calc the initial position
	364	wxCoord lineHeight = lbox->GetLineHeight();
	365
	366	// note that SetClippingRegion() needs the physical (unscrolled)
	367	// coordinates while we use the logical (scrolled) ones for the drawing
	368	// itself
	369	wxRect rect;
	370	wxSize size = lbox->GetClientSize();
	371	rect.width = size.x;
	372	rect.height = size.y;
	373
	374	// keep the text inside the client rect or we will overwrite the vertical
	375	// scrollbar for the long strings
	376	m_dc.SetClippingRegion(rect.x, rect.y, rect.width + 1, rect.height + 1);
	377
	378	// adjust the rect position now
	379	lbox->CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y);
	380	rect.y += itemFirst*lineHeight;
	381	rect.height = lineHeight;
	382
	383	// the rect should go to the right visible border so adjust the width if x
	384	// is shifted (rightmost point should stay the same)
	385	rect.width -= rect.x;
	386
	387	// we'll keep the text colour unchanged
	388	m_dc.SetTextForeground(lbox->GetForegroundColour());
	389
	390	// an item should have the focused rect only when the lbox has focus, so
	391	// make sure that we never set wxCONTROL_FOCUSED flag if it doesn't
	392	int itemCurrent = wxWindow::FindFocus() == (wxWindow *)lbox // cast needed
	393	? lbox->GetCurrentItem()
	394	: -1;
	395	for ( size_t n = itemFirst; n < itemLast; n++ )
	396	{
	397	int flags = 0;
	398	if ( (int)n == itemCurrent )
	399	flags \|= wxCONTROL_FOCUSED;
	400	if ( lbox->IsSelected(n) )
	401	flags \|= wxCONTROL_SELECTED;
	402
	403	#if wxUSE_CHECKLISTBOX
	404	if ( isCheckLbox )
	405	{
	406	wxCheckListBox *checklstbox = wxStaticCast(lbox, wxCheckListBox);
	407	if ( checklstbox->IsChecked(n) )
	408	flags \|= wxCONTROL_CHECKED;
	409
	410	m_renderer->DrawCheckItem(m_dc, lbox->GetString(n),
	411	wxNullBitmap,
	412	rect,
	413	flags);
	414	}
	415	else
	416	#endif // wxUSE_CHECKLISTBOX
	417	{
	418	m_renderer->DrawItem(m_dc, lbox->GetString(n), rect, flags);
	419	}
	420
	421	rect.y += lineHeight;
	422	}
	423	}
	424
	425	#endif // wxUSE_LISTBOX
	426
	427	#if wxUSE_CHECKLISTBOX
	428
	429	void wxControlRenderer::DrawCheckItems(const wxCheckListBox *lbox,
	430	size_t itemFirst, size_t itemLast)
	431	{
	432	DoDrawItems(lbox, itemFirst, itemLast, true);
	433	}
	434
	435	#endif // wxUSE_CHECKLISTBOX
	436
	437	#if wxUSE_GAUGE
	438
	439	void wxControlRenderer::DrawProgressBar(const wxGauge *gauge)
	440	{
	441	// draw background
	442	m_dc.SetBrush(wxBrush(m_window->GetBackgroundColour(), wxSOLID));
	443	m_dc.SetPen(*wxTRANSPARENT_PEN);
	444	m_dc.DrawRectangle(m_rect);
	445
	446	int max = gauge->GetRange();
	447	if ( !max )
	448	{
	449	// nothing to draw
	450	return;
	451	}
	452
	453	// calc the filled rect
	454	int pos = gauge->GetValue();
	455	int left = max - pos;
	456
	457	wxRect rect = m_rect;
	458	rect.Deflate(1); // FIXME this depends on the border width
	459
	460	wxColour col = m_window->UseFgCol() ? m_window->GetForegroundColour()
	461	: wxTHEME_COLOUR(GAUGE);
	462	m_dc.SetBrush(wxBrush(col, wxSOLID));
	463
	464	if ( gauge->IsSmooth() )
	465	{
	466	// just draw the rectangle in one go
	467	if ( gauge->IsVertical() )
	468	{
	469	// vert bars grow from bottom to top
	470	wxCoord dy = ((rect.height - 1) * left) / max;
	471	rect.y += dy;
	472	rect.height -= dy;
	473	}
	474	else // horizontal
	475	{
	476	// grow from left to right
	477	rect.width -= ((rect.width - 1) * left) / max;
	478	}
	479
	480	m_dc.DrawRectangle(rect);
	481	}
	482	else // discrete
	483	{
	484	wxSize sizeStep = m_renderer->GetProgressBarStep();
	485	int step = gauge->IsVertical() ? sizeStep.y : sizeStep.x;
	486
	487	// we divide by it below!
	488	wxCHECK_RET( step, wxT("invalid wxGauge step") );
	489
	490	// round up to make the progress appear to start faster
	491	int lenTotal = gauge->IsVertical() ? rect.height : rect.width;
	492	int steps = ((lenTotal + step - 1) * pos) / (max * step);
	493
	494	// calc the coords of one small rect
	495	wxCoord *px;
	496	wxCoord dx, dy;
	497	if ( gauge->IsVertical() )
	498	{
	499	// draw from bottom to top: so first set y to the bottom
	500	rect.y += rect.height - 1;
	501
	502	// then adjust the height
	503	rect.height = step;
	504
	505	// and then adjust y again to be what it should for the first rect
	506	rect.y -= rect.height;
	507
	508	// we are going up
	509	step = -step;
	510
	511	// remember that this will be the coord which will change
	512	px = &rect.y;
	513
	514	dy = 1;
	515	dx = 0;
	516	}
	517	else // horizontal
	518	{
	519	// don't leave 2 empty pixels in the beginning
	520	rect.x--;
	521
	522	px = &rect.x;
	523	rect.width = step;
	524
	525	dy = 0;
	526	dx = 1;
	527	}
	528
	529	for ( int n = 0; n < steps; n++ )
	530	{
	531	wxRect rectSegment = rect;
	532	rectSegment.Deflate(dx, dy);
	533
	534	m_dc.DrawRectangle(rectSegment);
	535
	536	*px += step;
	537	if ( *px < 1 )
	538	{
	539	// this can only happen for the last step of vertical gauge
	540	rect.height = *px - step - 1;
	541	*px = 1;
	542	}
	543	else if ( *px > lenTotal - step )
	544	{
	545	// this can only happen for the last step of horizontal gauge
	546	rect.width = lenTotal - *px - 1;
	547	}
	548	}
	549	}
	550	}
	551
	552	#endif // wxUSE_GAUGE