src/generic/renderg.cpp

///////////////////////////////////////////////////////////////////////////////
// Name:        src/generic/renderg.cpp
// Purpose:     generic implementation of wxRendererNative (for any platform)
// Author:      Vadim Zeitlin
// Modified by:
// Created:     20.07.2003
// RCS-ID:      $Id$
// Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
// License:     wxWindows license
///////////////////////////////////////////////////////////////////////////////

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

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

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

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#include "wx/renderer.h"

#ifndef WX_PRECOMP
    #include "wx/string.h"
    #include "wx/dc.h"
    #include "wx/settings.h"
    #include "wx/gdicmn.h"
    #include "wx/module.h"
#endif //WX_PRECOMP

#include "wx/splitter.h"
#include "wx/dcmirror.h"

// ----------------------------------------------------------------------------
// wxRendererGeneric: our wxRendererNative implementation
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxRendererGeneric : public wxRendererNative
{
public:
    wxRendererGeneric();

    virtual void DrawHeaderButton(wxWindow *win,
                                  wxDC& dc,
                                  const wxRect& rect,
                                  int flags = 0,
                                  wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
                                  wxHeaderButtonParams* params = NULL);

    virtual void DrawHeaderButtonContents(wxWindow *win,
                                          wxDC& dc,
                                          const wxRect& rect,
                                          int flags = 0,
                                          wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
                                          wxHeaderButtonParams* params = NULL);

    virtual int GetHeaderButtonHeight(wxWindow *win);

    virtual void DrawTreeItemButton(wxWindow *win,
                                    wxDC& dc,
                                    const wxRect& rect,
                                    int flags = 0);

    virtual void DrawSplitterBorder(wxWindow *win,
                                    wxDC& dc,
                                    const wxRect& rect,
                                    int flags = 0);

    virtual void DrawSplitterSash(wxWindow *win,
                                  wxDC& dc,
                                  const wxSize& size,
                                  wxCoord position,
                                  wxOrientation orient,
                                  int flags = 0);

    virtual void DrawComboBoxDropButton(wxWindow *win,
                                        wxDC& dc,
                                        const wxRect& rect,
                                        int flags = 0);

    virtual void DrawDropArrow(wxWindow *win,
                               wxDC& dc,
                               const wxRect& rect,
                               int flags = 0);

    virtual void DrawCheckBox(wxWindow *win,
                              wxDC& dc,
                              const wxRect& rect,
                              int flags = 0);

    virtual void DrawPushButton(wxWindow *win,
                                wxDC& dc,
                                const wxRect& rect,
                                int flags = 0);

    virtual void DrawItemSelectionRect(wxWindow *win,
                                       wxDC& dc,
                                       const wxRect& rect,
                                       int flags = 0);

    virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);

    virtual wxRendererVersion GetVersion() const
    {
        return wxRendererVersion(wxRendererVersion::Current_Version,
                                 wxRendererVersion::Current_Age);
    }


    // Cleanup by deleting standard renderer
    static void Cleanup();

    // Get the generic object
    static wxRendererGeneric* DoGetGeneric();

protected:
    // draw the rectange using the first pen for the left and top sides and
    // the second one for the bottom and right ones
    void DrawShadedRect(wxDC& dc, wxRect *rect,
                        const wxPen& pen1, const wxPen& pen2);

    // the standard pens
    wxPen m_penBlack,
          m_penDarkGrey,
          m_penLightGrey,
          m_penHighlight;

    static wxRendererGeneric* sm_rendererGeneric;
};

// ============================================================================
// wxRendererGeneric implementation
// ============================================================================

// Get the generic object
wxRendererGeneric* wxRendererGeneric::DoGetGeneric()
{
    if (!sm_rendererGeneric)
        sm_rendererGeneric = new wxRendererGeneric;
    return sm_rendererGeneric;
}

// ----------------------------------------------------------------------------
// wxRendererGeneric creation
// ----------------------------------------------------------------------------

/* static */
wxRendererNative& wxRendererNative::GetGeneric()
{
    return * wxRendererGeneric::DoGetGeneric();
}

void wxRendererGeneric::Cleanup()
{
    if (sm_rendererGeneric)
        delete sm_rendererGeneric;

    sm_rendererGeneric = NULL;
}

wxRendererGeneric* wxRendererGeneric::sm_rendererGeneric = NULL;

wxRendererGeneric::wxRendererGeneric()
    : m_penBlack(wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW)),
      m_penDarkGrey(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW)),
      m_penLightGrey(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)),
      m_penHighlight(wxSystemSettings::GetColour(wxSYS_COLOUR_3DHIGHLIGHT))
{
}

// ----------------------------------------------------------------------------
// wxRendererGeneric helpers
// ----------------------------------------------------------------------------

void
wxRendererGeneric::DrawShadedRect(wxDC& dc,
                                  wxRect *rect,
                                  const wxPen& pen1,
                                  const wxPen& pen2)
{
    // draw the rectangle
    dc.SetPen(pen1);
    dc.DrawLine(rect->GetLeft(), rect->GetTop(),
                rect->GetLeft(), rect->GetBottom());
    dc.DrawLine(rect->GetLeft() + 1, rect->GetTop(),
                rect->GetRight(), rect->GetTop());
    dc.SetPen(pen2);
    dc.DrawLine(rect->GetRight(), rect->GetTop(),
                rect->GetRight(), rect->GetBottom());
    dc.DrawLine(rect->GetLeft(), rect->GetBottom(),
                rect->GetRight() + 1, rect->GetBottom());

    // adjust the rect
    rect->Inflate(-1);
}

// ----------------------------------------------------------------------------
// tree/list ctrl drawing
// ----------------------------------------------------------------------------

void
wxRendererGeneric::DrawHeaderButton(wxWindow* win,
                                    wxDC& dc,
                                    const wxRect& rect,
                                    int flags,
                                    wxHeaderSortIconType sortArrow,
                                    wxHeaderButtonParams* params)
{
    const int CORNER = 1;

    const wxCoord x = rect.x,
                  y = rect.y,
                  w = rect.width,
                  h = rect.height;

    dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)));
    dc.SetPen(*wxTRANSPARENT_PEN);
    dc.DrawRectangle(rect);

    dc.SetBrush(*wxTRANSPARENT_BRUSH);

    dc.SetPen(m_penBlack);
    dc.DrawLine( x+w-CORNER+1, y, x+w, y+h );  // right (outer)
    dc.DrawRectangle( x, y+h, w+1, 1 );        // bottom (outer)

    dc.SetPen(m_penDarkGrey);
    dc.DrawLine( x+w-CORNER, y, x+w-1, y+h );  // right (inner)
    dc.DrawRectangle( x+1, y+h-1, w-2, 1 );    // bottom (inner)

    dc.SetPen(m_penHighlight);
    dc.DrawRectangle( x, y, w-CORNER+1, 1 );   // top (outer)
    dc.DrawRectangle( x, y, 1, h );            // left (outer)
    dc.DrawLine( x, y+h-1, x+1, y+h-1 );
    dc.DrawLine( x+w-1, y, x+w-1, y+1 );

    DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params);
}


void
wxRendererGeneric::DrawHeaderButtonContents(wxWindow *win,
                                            wxDC& dc,
                                            const wxRect& rect,
                                            int flags,
                                            wxHeaderSortIconType sortArrow,
                                            wxHeaderButtonParams* params)
{
    // Mark this item as selected.  For the generic version we'll just draw an
    // underline
    if ( flags & wxCONTROL_SELECTED )
    {
        // draw a line at the bottom of the header button, overlaying the
        // native hot-tracking line (on XP)
        const int penwidth = 3;
        int y = rect.y + rect.height + 1 - penwidth;
        wxColour c = (params && params->m_selectionColour.Ok()) ?
            params->m_selectionColour : wxColour(0x66, 0x66, 0x66);
        wxPen pen(c, penwidth);
        pen.SetCap(wxCAP_BUTT);
        dc.SetPen(pen);
        dc.DrawLine(rect.x, y, rect.x + rect.width, y);
    }

    // Draw an up or down arrow
    int arrowSpace = 0;
    if (sortArrow != wxHDR_SORT_ICON_NONE )
    {
        wxRect ar = rect;

        // make a rect for the arrow
        ar.height = 4;
        ar.width = 8;
        ar.y += (rect.height - ar.height)/2;
        ar.x = ar.x + rect.width - 3*ar.width/2;
        arrowSpace = 3*ar.width/2; // space to preserve when drawing the label

        wxPoint triPt[3];
        if ( sortArrow & wxHDR_SORT_ICON_UP )
        {
            triPt[0].x = ar.width / 2;
            triPt[0].y = 0;
            triPt[1].x = ar.width;
            triPt[1].y = ar.height;
            triPt[2].x = 0;
            triPt[2].y = ar.height;
        }
        else
        {
            triPt[0].x = 0;
            triPt[0].y = 0;
            triPt[1].x = ar.width;
            triPt[1].y = 0;
            triPt[2].x = ar.width / 2;
            triPt[2].y = ar.height;
        }

        wxColour c = (params && params->m_arrowColour.Ok()) ?
            params->m_arrowColour : wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW);
        dc.SetPen(wxPen(c));
        dc.SetBrush(wxBrush(c));
        dc.DrawPolygon( 3, triPt, ar.x, ar.y);
    }

    const int margin = 5;   // number of pixels to reserve on either side of the label
    int bmpWidth = 0;
    int txtEnd = 0;

    if ( params && params->m_labelBitmap.Ok() )
        bmpWidth = params->m_labelBitmap.GetWidth() + 2;

    // Draw a label if one is given
    if ( params && !params->m_labelText.empty() )
    {
        wxFont font  = params->m_labelFont.Ok() ?
            params->m_labelFont : win->GetFont();
        wxColour clr = params->m_labelColour.Ok() ?
            params->m_labelColour : win->GetForegroundColour();

        wxString label( params->m_labelText );

        dc.SetFont(font);
        dc.SetTextForeground(clr);
        dc.SetBackgroundMode(wxTRANSPARENT);

        int tw, th, td, x, y;
        dc.GetTextExtent( label, &tw, &th, &td);
        y = rect.y + wxMax(0, (rect.height - (th+td)) / 2);

        // truncate and add an ellipsis (...) if the text is too wide.
        int targetWidth = rect.width - arrowSpace - bmpWidth - 2*margin;
        if ( tw > targetWidth )
        {
            int ellipsisWidth;
            dc.GetTextExtent( wxT("..."), &ellipsisWidth, NULL);
            do {
                label.Truncate( label.length() - 1 );
                dc.GetTextExtent( label, &tw, &th);
            } while (tw + ellipsisWidth > targetWidth && label.length() );
            label.append( wxT("...") );
            tw += ellipsisWidth;
        }

        switch (params->m_labelAlignment)
        {
            default:
            case wxALIGN_LEFT:
                x = rect.x + margin;
                break;
            case wxALIGN_CENTER:
                x = rect.x + wxMax(0, (rect.width - arrowSpace  - tw - bmpWidth)/2);
                break;
            case wxALIGN_RIGHT:
                x = rect.x + wxMax(0, rect.width - arrowSpace - margin - tw - bmpWidth);
                break;
        }

        dc.DrawText(label, x, y);
        txtEnd = x + tw + 2;
    }

    // draw the bitmap if there is one
    if ( params && params->m_labelBitmap.Ok() )
    {
        int w, h, x, y;
        w = params->m_labelBitmap.GetWidth();
        h = params->m_labelBitmap.GetHeight();

        y = rect.y + wxMax(1, (rect.height - h) / 2);

        // if there is a text label, then put the bitmap at the end of the label
        if ( txtEnd != 0 )
        {
            x = txtEnd;
        }
        // otherwise use the alignment flags
        else
        {
            switch (params->m_labelAlignment)
            {
                default:
                case wxALIGN_LEFT:
                    x = rect.x + margin;
                    break;
                case wxALIGN_CENTER:
                    x = rect.x + wxMax(1, (rect.width - arrowSpace - w)/2);
                    break;
                case wxALIGN_RIGHT:
                    x = rect.x + wxMax(1, rect.width - arrowSpace - margin - w);
                    break;
            }
        }
        dc.DrawBitmap(params->m_labelBitmap, x, y, true);
    }
}


int wxRendererGeneric::GetHeaderButtonHeight(wxWindow *win)
{
    // Copied and adapted from src/generic/listctrl.cpp
    const int HEADER_OFFSET_Y = 1;
    const int EXTRA_HEIGHT = 4;

    int w=0, h=14, d=0;
    if (win)
        win->GetTextExtent(wxT("Hg"), &w, &h, &d);

    return h + d + 2 * HEADER_OFFSET_Y + EXTRA_HEIGHT;
}


// draw the plus or minus sign
void
wxRendererGeneric::DrawTreeItemButton(wxWindow * WXUNUSED(win),
                                      wxDC& dc,
                                      const wxRect& rect,
                                      int flags)
{
    // store settings
    wxDCPenChanger penChanger(dc, *wxGREY_PEN);
    wxDCBrushChanger brushChanger(dc, *wxWHITE_BRUSH);

    dc.DrawRectangle(rect);

    // black lines
    const wxCoord xMiddle = rect.x + rect.width/2;
    const wxCoord yMiddle = rect.y + rect.height/2;

    // half of the length of the horz lines in "-" and "+"
    const wxCoord halfWidth = rect.width/2 - 2;
    dc.SetPen(*wxBLACK_PEN);
    dc.DrawLine(xMiddle - halfWidth, yMiddle,
                xMiddle + halfWidth + 1, yMiddle);

    if ( !(flags & wxCONTROL_EXPANDED) )
    {
        // turn "-" into "+"
        const wxCoord halfHeight = rect.height/2 - 2;
        dc.DrawLine(xMiddle, yMiddle - halfHeight,
                    xMiddle, yMiddle + halfHeight + 1);
    }
}

// ----------------------------------------------------------------------------
// sash drawing
// ----------------------------------------------------------------------------

wxSplitterRenderParams
wxRendererGeneric::GetSplitterParams(const wxWindow *win)
{
    // see below
    wxCoord sashWidth,
            border;

    if ( win->HasFlag(wxSP_3DSASH) )
        sashWidth = 7;
    else if ( win->HasFlag(wxSP_NOSASH) )
        sashWidth = 0;
    else // no 3D effect
        sashWidth = 3;

    if ( win->HasFlag(wxSP_3DBORDER) )
        border = 2;
    else // no 3D effect
        border = 0;

    return wxSplitterRenderParams(sashWidth, border, false);
}

void
wxRendererGeneric::DrawSplitterBorder(wxWindow *win,
                                      wxDC& dc,
                                      const wxRect& rectOrig,
                                      int WXUNUSED(falgs))
{
    if ( win->HasFlag(wxSP_3DBORDER) )
    {
        wxRect rect = rectOrig;
        DrawShadedRect(dc, &rect, m_penDarkGrey, m_penHighlight);
        DrawShadedRect(dc, &rect, m_penBlack, m_penLightGrey);
    }
}

void
wxRendererGeneric::DrawSplitterSash(wxWindow *win,
                                    wxDC& dcReal,
                                    const wxSize& sizeReal,
                                    wxCoord position,
                                    wxOrientation orient,
                                    int WXUNUSED(flags))
{
    // to avoid duplicating the same code for horizontal and vertical sashes,
    // simply mirror the DC instead if needed (i.e. if horz splitter)
    wxMirrorDC dc(dcReal, orient != wxVERTICAL);
    wxSize size = dc.Reflect(sizeReal);


    // we draw a Win32-like grey sash with possible 3D border here:
    //
    //   ---- this is position
    //  /
    // v
    // dWGGGDd
    // GWGGGDB
    // GWGGGDB  where G is light grey (face)
    // GWGGGDB        W    white      (light)
    // GWGGGDB        D    dark grey  (shadow)
    // GWGGGDB        B    black      (dark shadow)
    // GWGGGDB
    // GWGGGDB  and lower letters are our border (already drawn)
    // GWGGGDB
    // wWGGGDd
    //
    // only the middle 3 columns are drawn unless wxSP_3D is specified

    const wxCoord h = size.y;
    wxCoord offset = 0;

    // If we're drawing the border, draw the sash 3d lines shorter
    if ( win->HasFlag(wxSP_3DBORDER) )
    {
        offset = 1;
    }

    dc.SetPen(*wxTRANSPARENT_PEN);
    dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)));

    if ( win->HasFlag(wxSP_3DSASH) )
    {
        // Draw the 3D sash
        dc.DrawRectangle(position + 2, 0, 3, h);

        dc.SetPen(m_penLightGrey);
        dc.DrawLine(position, offset, position, h - offset);

        dc.SetPen(m_penHighlight);
        dc.DrawLine(position + 1, 0, position + 1, h);

        dc.SetPen(m_penDarkGrey);
        dc.DrawLine(position + 5, 0, position + 5, h);

        dc.SetPen(m_penBlack);
        dc.DrawLine(position + 6, offset, position + 6, h - offset);
    }
    else
    {
        // Draw a flat sash
        dc.DrawRectangle(position, 0, 3, h);
    }
}

// ----------------------------------------------------------------------------
// button drawing
// ----------------------------------------------------------------------------

void
wxRendererGeneric::DrawComboBoxDropButton(wxWindow *win,
                                          wxDC& dc,
                                          const wxRect& rect,
                                          int flags)
{
    DrawPushButton(win,dc,rect,flags);
    DrawDropArrow(win,dc,rect,flags);
}

void
wxRendererGeneric::DrawDropArrow(wxWindow *win,
                                 wxDC& dc,
                                 const wxRect& rect,
                                 int WXUNUSED(flags))
{
    // This generic implementation should be good
    // enough for Windows platforms (including XP).

    int arrowHalf = rect.width/5;
    int rectMid = rect.width / 2;
    int arrowTopY = (rect.height/2) - (arrowHalf/2);

    // This should always result in arrow with odd width.
    wxPoint pt[] =
    {
        wxPoint(rectMid - arrowHalf, arrowTopY),
        wxPoint(rectMid + arrowHalf, arrowTopY),
        wxPoint(rectMid, arrowTopY + arrowHalf)
    };
    dc.SetBrush(wxBrush(win->GetForegroundColour()));
    dc.SetPen(wxPen(win->GetForegroundColour()));
    dc.DrawPolygon(WXSIZEOF(pt), pt, rect.x, rect.y);
}

void
wxRendererGeneric::DrawCheckBox(wxWindow *WXUNUSED(win),
                                wxDC& dc,
                                const wxRect& rect,
                                int flags)
{
    dc.SetPen(*(flags & wxCONTROL_DISABLED ? wxGREY_PEN : wxBLACK_PEN));
    dc.SetBrush( *wxTRANSPARENT_BRUSH );
    dc.DrawRectangle(rect);

    if ( flags & wxCONTROL_CHECKED )
    {
        dc.DrawCheckMark(rect.Deflate(2, 2));
    }
}

void
wxRendererGeneric::DrawPushButton(wxWindow *win,
                                  wxDC& dc,
                                  const wxRect& rect,
                                  int flags)
{
    // Don't try anything too fancy. It'll just turn out looking
    // out-of-place on most platforms.
    wxColour bgCol = flags & wxCONTROL_DISABLED ?
                        wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE) :
                        win->GetBackgroundColour();
    dc.SetBrush(wxBrush(bgCol));
    dc.SetPen(wxPen(bgCol));
    dc.DrawRectangle(rect);
}

void
wxRendererGeneric::DrawItemSelectionRect(wxWindow * WXUNUSED(win),
                                         wxDC& dc,
                                         const wxRect& rect,
                                         int flags)
{
    wxBrush brush;
    if ( flags & wxCONTROL_SELECTED )
    {
        if ( flags & wxCONTROL_FOCUSED )
        {
            brush = wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
        }
        else // !focused
        {
            brush = wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNSHADOW));
        }
    }
    else // !selected
    {
        brush = *wxTRANSPARENT_BRUSH;
    }

    dc.SetBrush(brush);
    dc.SetPen(flags & wxCONTROL_CURRENT ? *wxBLACK_PEN : *wxTRANSPARENT_PEN);

    dc.DrawRectangle( rect );
}


// ----------------------------------------------------------------------------
// A module to allow cleanup of generic renderer.
// ----------------------------------------------------------------------------

class wxGenericRendererModule: public wxModule
{
DECLARE_DYNAMIC_CLASS(wxGenericRendererModule)
public:
    wxGenericRendererModule() {}
    bool OnInit() { return true; };
    void OnExit() { wxRendererGeneric::Cleanup(); };
};

IMPLEMENT_DYNAMIC_CLASS(wxGenericRendererModule, wxModule)
Commit	Line	Data
	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: src/generic/renderg.cpp
	3	// Purpose: generic implementation of wxRendererNative (for any platform)
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 20.07.2003
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
	9	// License: wxWindows license
	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	#include "wx/renderer.h"
	28
	29	#ifndef WX_PRECOMP
	30	#include "wx/string.h"
	31	#include "wx/dc.h"
	32	#include "wx/settings.h"
	33	#include "wx/gdicmn.h"
	34	#include "wx/module.h"
	35	#endif //WX_PRECOMP
	36
	37	#include "wx/splitter.h"
	38	#include "wx/dcmirror.h"
	39
	40	// ----------------------------------------------------------------------------
	41	// wxRendererGeneric: our wxRendererNative implementation
	42	// ----------------------------------------------------------------------------
	43
	44	class WXDLLEXPORT wxRendererGeneric : public wxRendererNative
	45	{
	46	public:
	47	wxRendererGeneric();
	48
	49	virtual void DrawHeaderButton(wxWindow *win,
	50	wxDC& dc,
	51	const wxRect& rect,
	52	int flags = 0,
	53	wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
	54	wxHeaderButtonParams* params = NULL);
	55
	56	virtual void DrawHeaderButtonContents(wxWindow *win,
	57	wxDC& dc,
	58	const wxRect& rect,
	59	int flags = 0,
	60	wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
	61	wxHeaderButtonParams* params = NULL);
	62
	63	virtual int GetHeaderButtonHeight(wxWindow *win);
	64
	65	virtual void DrawTreeItemButton(wxWindow *win,
	66	wxDC& dc,
	67	const wxRect& rect,
	68	int flags = 0);
	69
	70	virtual void DrawSplitterBorder(wxWindow *win,
	71	wxDC& dc,
	72	const wxRect& rect,
	73	int flags = 0);
	74
	75	virtual void DrawSplitterSash(wxWindow *win,
	76	wxDC& dc,
	77	const wxSize& size,
	78	wxCoord position,
	79	wxOrientation orient,
	80	int flags = 0);
	81
	82	virtual void DrawComboBoxDropButton(wxWindow *win,
	83	wxDC& dc,
	84	const wxRect& rect,
	85	int flags = 0);
	86
	87	virtual void DrawDropArrow(wxWindow *win,
	88	wxDC& dc,
	89	const wxRect& rect,
	90	int flags = 0);
	91
	92	virtual void DrawCheckBox(wxWindow *win,
	93	wxDC& dc,
	94	const wxRect& rect,
	95	int flags = 0);
	96
	97	virtual void DrawPushButton(wxWindow *win,
	98	wxDC& dc,
	99	const wxRect& rect,
	100	int flags = 0);
	101
	102	virtual void DrawItemSelectionRect(wxWindow *win,
	103	wxDC& dc,
	104	const wxRect& rect,
	105	int flags = 0);
	106
	107	virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
	108
	109	virtual wxRendererVersion GetVersion() const
	110	{
	111	return wxRendererVersion(wxRendererVersion::Current_Version,
	112	wxRendererVersion::Current_Age);
	113	}
	114
	115
	116	// Cleanup by deleting standard renderer
	117	static void Cleanup();
	118
	119	// Get the generic object
	120	static wxRendererGeneric* DoGetGeneric();
	121
	122	protected:
	123	// draw the rectange using the first pen for the left and top sides and
	124	// the second one for the bottom and right ones
	125	void DrawShadedRect(wxDC& dc, wxRect *rect,
	126	const wxPen& pen1, const wxPen& pen2);
	127
	128	// the standard pens
	129	wxPen m_penBlack,
	130	m_penDarkGrey,
	131	m_penLightGrey,
	132	m_penHighlight;
	133
	134	static wxRendererGeneric* sm_rendererGeneric;
	135	};
	136
	137	// ============================================================================
	138	// wxRendererGeneric implementation
	139	// ============================================================================
	140
	141	// Get the generic object
	142	wxRendererGeneric* wxRendererGeneric::DoGetGeneric()
	143	{
	144	if (!sm_rendererGeneric)
	145	sm_rendererGeneric = new wxRendererGeneric;
	146	return sm_rendererGeneric;
	147	}
	148
	149	// ----------------------------------------------------------------------------
	150	// wxRendererGeneric creation
	151	// ----------------------------------------------------------------------------
	152
	153	/* static */
	154	wxRendererNative& wxRendererNative::GetGeneric()
	155	{
	156	return * wxRendererGeneric::DoGetGeneric();
	157	}
	158
	159	void wxRendererGeneric::Cleanup()
	160	{
	161	if (sm_rendererGeneric)
	162	delete sm_rendererGeneric;
	163
	164	sm_rendererGeneric = NULL;
	165	}
	166
	167	wxRendererGeneric* wxRendererGeneric::sm_rendererGeneric = NULL;
	168
	169	wxRendererGeneric::wxRendererGeneric()
	170	: m_penBlack(wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW)),
	171	m_penDarkGrey(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW)),
	172	m_penLightGrey(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)),
	173	m_penHighlight(wxSystemSettings::GetColour(wxSYS_COLOUR_3DHIGHLIGHT))
	174	{
	175	}
	176
	177	// ----------------------------------------------------------------------------
	178	// wxRendererGeneric helpers
	179	// ----------------------------------------------------------------------------
	180
	181	void
	182	wxRendererGeneric::DrawShadedRect(wxDC& dc,
	183	wxRect *rect,
	184	const wxPen& pen1,
	185	const wxPen& pen2)
	186	{
	187	// draw the rectangle
	188	dc.SetPen(pen1);
	189	dc.DrawLine(rect->GetLeft(), rect->GetTop(),
	190	rect->GetLeft(), rect->GetBottom());
	191	dc.DrawLine(rect->GetLeft() + 1, rect->GetTop(),
	192	rect->GetRight(), rect->GetTop());
	193	dc.SetPen(pen2);
	194	dc.DrawLine(rect->GetRight(), rect->GetTop(),
	195	rect->GetRight(), rect->GetBottom());
	196	dc.DrawLine(rect->GetLeft(), rect->GetBottom(),
	197	rect->GetRight() + 1, rect->GetBottom());
	198
	199	// adjust the rect
	200	rect->Inflate(-1);
	201	}
	202
	203	// ----------------------------------------------------------------------------
	204	// tree/list ctrl drawing
	205	// ----------------------------------------------------------------------------
	206
	207	void
	208	wxRendererGeneric::DrawHeaderButton(wxWindow* win,
	209	wxDC& dc,
	210	const wxRect& rect,
	211	int flags,
	212	wxHeaderSortIconType sortArrow,
	213	wxHeaderButtonParams* params)
	214	{
	215	const int CORNER = 1;
	216
	217	const wxCoord x = rect.x,
	218	y = rect.y,
	219	w = rect.width,
	220	h = rect.height;
	221
	222	dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)));
	223	dc.SetPen(*wxTRANSPARENT_PEN);
	224	dc.DrawRectangle(rect);
	225
	226	dc.SetBrush(*wxTRANSPARENT_BRUSH);
	227
	228	dc.SetPen(m_penBlack);
	229	dc.DrawLine( x+w-CORNER+1, y, x+w, y+h ); // right (outer)
	230	dc.DrawRectangle( x, y+h, w+1, 1 ); // bottom (outer)
	231
	232	dc.SetPen(m_penDarkGrey);
	233	dc.DrawLine( x+w-CORNER, y, x+w-1, y+h ); // right (inner)
	234	dc.DrawRectangle( x+1, y+h-1, w-2, 1 ); // bottom (inner)
	235
	236	dc.SetPen(m_penHighlight);
	237	dc.DrawRectangle( x, y, w-CORNER+1, 1 ); // top (outer)
	238	dc.DrawRectangle( x, y, 1, h ); // left (outer)
	239	dc.DrawLine( x, y+h-1, x+1, y+h-1 );
	240	dc.DrawLine( x+w-1, y, x+w-1, y+1 );
	241
	242	DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params);
	243	}
	244
	245
	246	void
	247	wxRendererGeneric::DrawHeaderButtonContents(wxWindow *win,
	248	wxDC& dc,
	249	const wxRect& rect,
	250	int flags,
	251	wxHeaderSortIconType sortArrow,
	252	wxHeaderButtonParams* params)
	253	{
	254	// Mark this item as selected. For the generic version we'll just draw an
	255	// underline
	256	if ( flags & wxCONTROL_SELECTED )
	257	{
	258	// draw a line at the bottom of the header button, overlaying the
	259	// native hot-tracking line (on XP)
	260	const int penwidth = 3;
	261	int y = rect.y + rect.height + 1 - penwidth;
	262	wxColour c = (params && params->m_selectionColour.Ok()) ?
	263	params->m_selectionColour : wxColour(0x66, 0x66, 0x66);
	264	wxPen pen(c, penwidth);
	265	pen.SetCap(wxCAP_BUTT);
	266	dc.SetPen(pen);
	267	dc.DrawLine(rect.x, y, rect.x + rect.width, y);
	268	}
	269
	270	// Draw an up or down arrow
	271	int arrowSpace = 0;
	272	if (sortArrow != wxHDR_SORT_ICON_NONE )
	273	{
	274	wxRect ar = rect;
	275
	276	// make a rect for the arrow
	277	ar.height = 4;
	278	ar.width = 8;
	279	ar.y += (rect.height - ar.height)/2;
	280	ar.x = ar.x + rect.width - 3*ar.width/2;
	281	arrowSpace = 3*ar.width/2; // space to preserve when drawing the label
	282
	283	wxPoint triPt[3];
	284	if ( sortArrow & wxHDR_SORT_ICON_UP )
	285	{
	286	triPt[0].x = ar.width / 2;
	287	triPt[0].y = 0;
	288	triPt[1].x = ar.width;
	289	triPt[1].y = ar.height;
	290	triPt[2].x = 0;
	291	triPt[2].y = ar.height;
	292	}
	293	else
	294	{
	295	triPt[0].x = 0;
	296	triPt[0].y = 0;
	297	triPt[1].x = ar.width;
	298	triPt[1].y = 0;
	299	triPt[2].x = ar.width / 2;
	300	triPt[2].y = ar.height;
	301	}
	302
	303	wxColour c = (params && params->m_arrowColour.Ok()) ?
	304	params->m_arrowColour : wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW);
	305	dc.SetPen(wxPen(c));
	306	dc.SetBrush(wxBrush(c));
	307	dc.DrawPolygon( 3, triPt, ar.x, ar.y);
	308	}
	309
	310	const int margin = 5; // number of pixels to reserve on either side of the label
	311	int bmpWidth = 0;
	312	int txtEnd = 0;
	313
	314	if ( params && params->m_labelBitmap.Ok() )
	315	bmpWidth = params->m_labelBitmap.GetWidth() + 2;
	316
	317	// Draw a label if one is given
	318	if ( params && !params->m_labelText.empty() )
	319	{
	320	wxFont font = params->m_labelFont.Ok() ?
	321	params->m_labelFont : win->GetFont();
	322	wxColour clr = params->m_labelColour.Ok() ?
	323	params->m_labelColour : win->GetForegroundColour();
	324
	325	wxString label( params->m_labelText );
	326
	327	dc.SetFont(font);
	328	dc.SetTextForeground(clr);
	329	dc.SetBackgroundMode(wxTRANSPARENT);
	330
	331	int tw, th, td, x, y;
	332	dc.GetTextExtent( label, &tw, &th, &td);
	333	y = rect.y + wxMax(0, (rect.height - (th+td)) / 2);
	334
	335	// truncate and add an ellipsis (...) if the text is too wide.
	336	int targetWidth = rect.width - arrowSpace - bmpWidth - 2*margin;
	337	if ( tw > targetWidth )
	338	{
	339	int ellipsisWidth;
	340	dc.GetTextExtent( wxT("..."), &ellipsisWidth, NULL);
	341	do {
	342	label.Truncate( label.length() - 1 );
	343	dc.GetTextExtent( label, &tw, &th);
	344	} while (tw + ellipsisWidth > targetWidth && label.length() );
	345	label.append( wxT("...") );
	346	tw += ellipsisWidth;
	347	}
	348
	349	switch (params->m_labelAlignment)
	350	{
	351	default:
	352	case wxALIGN_LEFT:
	353	x = rect.x + margin;
	354	break;
	355	case wxALIGN_CENTER:
	356	x = rect.x + wxMax(0, (rect.width - arrowSpace - tw - bmpWidth)/2);
	357	break;
	358	case wxALIGN_RIGHT:
	359	x = rect.x + wxMax(0, rect.width - arrowSpace - margin - tw - bmpWidth);
	360	break;
	361	}
	362
	363	dc.DrawText(label, x, y);
	364	txtEnd = x + tw + 2;
	365	}
	366
	367	// draw the bitmap if there is one
	368	if ( params && params->m_labelBitmap.Ok() )
	369	{
	370	int w, h, x, y;
	371	w = params->m_labelBitmap.GetWidth();
	372	h = params->m_labelBitmap.GetHeight();
	373
	374	y = rect.y + wxMax(1, (rect.height - h) / 2);
	375
	376	// if there is a text label, then put the bitmap at the end of the label
	377	if ( txtEnd != 0 )
	378	{
	379	x = txtEnd;
	380	}
	381	// otherwise use the alignment flags
	382	else
	383	{
	384	switch (params->m_labelAlignment)
	385	{
	386	default:
	387	case wxALIGN_LEFT:
	388	x = rect.x + margin;
	389	break;
	390	case wxALIGN_CENTER:
	391	x = rect.x + wxMax(1, (rect.width - arrowSpace - w)/2);
	392	break;
	393	case wxALIGN_RIGHT:
	394	x = rect.x + wxMax(1, rect.width - arrowSpace - margin - w);
	395	break;
	396	}
	397	}
	398	dc.DrawBitmap(params->m_labelBitmap, x, y, true);
	399	}
	400	}
	401
	402
	403	int wxRendererGeneric::GetHeaderButtonHeight(wxWindow *win)
	404	{
	405	// Copied and adapted from src/generic/listctrl.cpp
	406	const int HEADER_OFFSET_Y = 1;
	407	const int EXTRA_HEIGHT = 4;
	408
	409	int w=0, h=14, d=0;
	410	if (win)
	411	win->GetTextExtent(wxT("Hg"), &w, &h, &d);
	412
	413	return h + d + 2 * HEADER_OFFSET_Y + EXTRA_HEIGHT;
	414	}
	415
	416
	417	// draw the plus or minus sign
	418	void
	419	wxRendererGeneric::DrawTreeItemButton(wxWindow * WXUNUSED(win),
	420	wxDC& dc,
	421	const wxRect& rect,
	422	int flags)
	423	{
	424	// store settings
	425	wxDCPenChanger penChanger(dc, *wxGREY_PEN);
	426	wxDCBrushChanger brushChanger(dc, *wxWHITE_BRUSH);
	427
	428	dc.DrawRectangle(rect);
	429
	430	// black lines
	431	const wxCoord xMiddle = rect.x + rect.width/2;
	432	const wxCoord yMiddle = rect.y + rect.height/2;
	433
	434	// half of the length of the horz lines in "-" and "+"
	435	const wxCoord halfWidth = rect.width/2 - 2;
	436	dc.SetPen(*wxBLACK_PEN);
	437	dc.DrawLine(xMiddle - halfWidth, yMiddle,
	438	xMiddle + halfWidth + 1, yMiddle);
	439
	440	if ( !(flags & wxCONTROL_EXPANDED) )
	441	{
	442	// turn "-" into "+"
	443	const wxCoord halfHeight = rect.height/2 - 2;
	444	dc.DrawLine(xMiddle, yMiddle - halfHeight,
	445	xMiddle, yMiddle + halfHeight + 1);
	446	}
	447	}
	448
	449	// ----------------------------------------------------------------------------
	450	// sash drawing
	451	// ----------------------------------------------------------------------------
	452
	453	wxSplitterRenderParams
	454	wxRendererGeneric::GetSplitterParams(const wxWindow *win)
	455	{
	456	// see below
	457	wxCoord sashWidth,
	458	border;
	459
	460	if ( win->HasFlag(wxSP_3DSASH) )
	461	sashWidth = 7;
	462	else if ( win->HasFlag(wxSP_NOSASH) )
	463	sashWidth = 0;
	464	else // no 3D effect
	465	sashWidth = 3;
	466
	467	if ( win->HasFlag(wxSP_3DBORDER) )
	468	border = 2;
	469	else // no 3D effect
	470	border = 0;
	471
	472	return wxSplitterRenderParams(sashWidth, border, false);
	473	}
	474
	475	void
	476	wxRendererGeneric::DrawSplitterBorder(wxWindow *win,
	477	wxDC& dc,
	478	const wxRect& rectOrig,
	479	int WXUNUSED(falgs))
	480	{
	481	if ( win->HasFlag(wxSP_3DBORDER) )
	482	{
	483	wxRect rect = rectOrig;
	484	DrawShadedRect(dc, &rect, m_penDarkGrey, m_penHighlight);
	485	DrawShadedRect(dc, &rect, m_penBlack, m_penLightGrey);
	486	}
	487	}
	488
	489	void
	490	wxRendererGeneric::DrawSplitterSash(wxWindow *win,
	491	wxDC& dcReal,
	492	const wxSize& sizeReal,
	493	wxCoord position,
	494	wxOrientation orient,
	495	int WXUNUSED(flags))
	496	{
	497	// to avoid duplicating the same code for horizontal and vertical sashes,
	498	// simply mirror the DC instead if needed (i.e. if horz splitter)
	499	wxMirrorDC dc(dcReal, orient != wxVERTICAL);
	500	wxSize size = dc.Reflect(sizeReal);
	501
	502
	503	// we draw a Win32-like grey sash with possible 3D border here:
	504	//
	505	// ---- this is position
	506	// /
	507	// v
	508	// dWGGGDd
	509	// GWGGGDB
	510	// GWGGGDB where G is light grey (face)
	511	// GWGGGDB W white (light)
	512	// GWGGGDB D dark grey (shadow)
	513	// GWGGGDB B black (dark shadow)
	514	// GWGGGDB
	515	// GWGGGDB and lower letters are our border (already drawn)
	516	// GWGGGDB
	517	// wWGGGDd
	518	//
	519	// only the middle 3 columns are drawn unless wxSP_3D is specified
	520
	521	const wxCoord h = size.y;
	522	wxCoord offset = 0;
	523
	524	// If we're drawing the border, draw the sash 3d lines shorter
	525	if ( win->HasFlag(wxSP_3DBORDER) )
	526	{
	527	offset = 1;
	528	}
	529
	530	dc.SetPen(*wxTRANSPARENT_PEN);
	531	dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)));
	532
	533	if ( win->HasFlag(wxSP_3DSASH) )
	534	{
	535	// Draw the 3D sash
	536	dc.DrawRectangle(position + 2, 0, 3, h);
	537
	538	dc.SetPen(m_penLightGrey);
	539	dc.DrawLine(position, offset, position, h - offset);
	540
	541	dc.SetPen(m_penHighlight);
	542	dc.DrawLine(position + 1, 0, position + 1, h);
	543
	544	dc.SetPen(m_penDarkGrey);
	545	dc.DrawLine(position + 5, 0, position + 5, h);
	546
	547	dc.SetPen(m_penBlack);
	548	dc.DrawLine(position + 6, offset, position + 6, h - offset);
	549	}
	550	else
	551	{
	552	// Draw a flat sash
	553	dc.DrawRectangle(position, 0, 3, h);
	554	}
	555	}
	556
	557	// ----------------------------------------------------------------------------
	558	// button drawing
	559	// ----------------------------------------------------------------------------
	560
	561	void
	562	wxRendererGeneric::DrawComboBoxDropButton(wxWindow *win,
	563	wxDC& dc,
	564	const wxRect& rect,
	565	int flags)
	566	{
	567	DrawPushButton(win,dc,rect,flags);
	568	DrawDropArrow(win,dc,rect,flags);
	569	}
	570
	571	void
	572	wxRendererGeneric::DrawDropArrow(wxWindow *win,
	573	wxDC& dc,
	574	const wxRect& rect,
	575	int WXUNUSED(flags))
	576	{
	577	// This generic implementation should be good
	578	// enough for Windows platforms (including XP).
	579
	580	int arrowHalf = rect.width/5;
	581	int rectMid = rect.width / 2;
	582	int arrowTopY = (rect.height/2) - (arrowHalf/2);
	583
	584	// This should always result in arrow with odd width.
	585	wxPoint pt[] =
	586	{
	587	wxPoint(rectMid - arrowHalf, arrowTopY),
	588	wxPoint(rectMid + arrowHalf, arrowTopY),
	589	wxPoint(rectMid, arrowTopY + arrowHalf)
	590	};
	591	dc.SetBrush(wxBrush(win->GetForegroundColour()));
	592	dc.SetPen(wxPen(win->GetForegroundColour()));
	593	dc.DrawPolygon(WXSIZEOF(pt), pt, rect.x, rect.y);
	594	}
	595
	596	void
	597	wxRendererGeneric::DrawCheckBox(wxWindow *WXUNUSED(win),
	598	wxDC& dc,
	599	const wxRect& rect,
	600	int flags)
	601	{
	602	dc.SetPen(*(flags & wxCONTROL_DISABLED ? wxGREY_PEN : wxBLACK_PEN));
	603	dc.SetBrush( *wxTRANSPARENT_BRUSH );
	604	dc.DrawRectangle(rect);
	605
	606	if ( flags & wxCONTROL_CHECKED )
	607	{
	608	dc.DrawCheckMark(rect.Deflate(2, 2));
	609	}
	610	}
	611
	612	void
	613	wxRendererGeneric::DrawPushButton(wxWindow *win,
	614	wxDC& dc,
	615	const wxRect& rect,
	616	int flags)
	617	{
	618	// Don't try anything too fancy. It'll just turn out looking
	619	// out-of-place on most platforms.
	620	wxColour bgCol = flags & wxCONTROL_DISABLED ?
	621	wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE) :
	622	win->GetBackgroundColour();
	623	dc.SetBrush(wxBrush(bgCol));
	624	dc.SetPen(wxPen(bgCol));
	625	dc.DrawRectangle(rect);
	626	}
	627
	628	void
	629	wxRendererGeneric::DrawItemSelectionRect(wxWindow * WXUNUSED(win),
	630	wxDC& dc,
	631	const wxRect& rect,
	632	int flags)
	633	{
	634	wxBrush brush;
	635	if ( flags & wxCONTROL_SELECTED )
	636	{
	637	if ( flags & wxCONTROL_FOCUSED )
	638	{
	639	brush = wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
	640	}
	641	else // !focused
	642	{
	643	brush = wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNSHADOW));
	644	}
	645	}
	646	else // !selected
	647	{
	648	brush = *wxTRANSPARENT_BRUSH;
	649	}
	650
	651	dc.SetBrush(brush);
	652	dc.SetPen(flags & wxCONTROL_CURRENT ? wxBLACK_PEN : wxTRANSPARENT_PEN);
	653
	654	dc.DrawRectangle( rect );
	655	}
	656
	657
	658	// ----------------------------------------------------------------------------
	659	// A module to allow cleanup of generic renderer.
	660	// ----------------------------------------------------------------------------
	661
	662	class wxGenericRendererModule: public wxModule
	663	{
	664	DECLARE_DYNAMIC_CLASS(wxGenericRendererModule)
	665	public:
	666	wxGenericRendererModule() {}
	667	bool OnInit() { return true; };
	668	void OnExit() { wxRendererGeneric::Cleanup(); };
	669	};
	670
	671	IMPLEMENT_DYNAMIC_CLASS(wxGenericRendererModule, wxModule)