Mercurial > vba-linux

     1 // VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.

     2 // Copyright (C) 1999-2003 Forgotten

     3 // Copyright (C) 2004 Forgotten and the VBA development team

     4 

     5 // This program is free software; you can redistribute it and/or modify

     6 // it under the terms of the GNU General Public License as published by

     7 // the Free Software Foundation; either version 2, or(at your option)

     8 // any later version.

     9 //

    10 // This program is distributed in the hope that it will be useful,

    11 // but WITHOUT ANY WARRANTY; without even the implied warranty of

    12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13 // GNU General Public License for more details.

    14 //

    15 // You should have received a copy of the GNU General Public License

    16 // along with this program; if not, write to the Free Software Foundation,

    17 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

    18 

    19 #include "screenarea.h"

    20 

    21 #include <string.h>

    22 

    23 namespace VBA

    24 {

    25 

    26 ScreenArea::ScreenArea(int _iWidth, int _iHeight, int _iScale) :

    27   m_puiPixels(NULL),

    28   m_puiDelta(NULL),

    29   m_vFilter2x(NULL),

    30   m_vFilterIB(NULL),

    31   m_bShowCursor(true)

    32 {

    33   g_assert(_iWidth >= 1 && _iHeight >= 1 && _iScale >= 1);

    34 

    35   m_iWidth  = _iWidth;

    36   m_iHeight = _iHeight;

    37   m_iScale  = _iScale;

    38   vUpdateSize();

    39 

    40   set_events(Gdk::EXPOSURE_MASK

    41              | Gdk::POINTER_MOTION_MASK

    42              | Gdk::ENTER_NOTIFY_MASK

    43              | Gdk::LEAVE_NOTIFY_MASK);

    44 

    45   char aiEmptyData[8];

    46   memset(aiEmptyData, 0, sizeof(aiEmptyData));

    47   Glib::RefPtr<Gdk::Bitmap> poSource = Gdk::Bitmap::create(aiEmptyData, 8, 8);

    48   Glib::RefPtr<Gdk::Bitmap> poMask = Gdk::Bitmap::create(aiEmptyData, 8, 8);

    49   Gdk::Color oFg;

    50   Gdk::Color oBg;

    51   oFg.set_rgb(0, 0, 0);

    52   oBg.set_rgb(0, 0, 0);

    53 

    54   m_poEmptyCursor = new Gdk::Cursor(poSource, poMask, oFg, oBg, 0, 0);

    55 }

    56 

    57 ScreenArea::~ScreenArea()

    58 {

    59   if (m_puiPixels != NULL)

    60   {

    61     delete[] m_puiPixels;

    62   }

    63 

    64   if (m_puiDelta != NULL)

    65   {

    66     delete[] m_puiDelta;

    67   }

    68 

    69   if (m_poEmptyCursor != NULL)

    70   {

    71     delete m_poEmptyCursor;

    72   }

    73 }

    74 

    75 void ScreenArea::vSetSize(int _iWidth, int _iHeight)

    76 {

    77   g_return_if_fail(_iWidth >= 1 && _iHeight >= 1);

    78 

    79   if (_iWidth != m_iWidth || _iHeight != m_iHeight)

    80   {

    81     m_iWidth  = _iWidth;

    82     m_iHeight = _iHeight;

    83     vUpdateSize();

    84   }

    85 }

    86 

    87 void ScreenArea::vSetScale(int _iScale)

    88 {

    89   g_return_if_fail(_iScale >= 1);

    90 

    91   if (_iScale != m_iScale)

    92   {

    93     m_iScale = _iScale;

    94     vUpdateSize();

    95   }

    96 }

    97 

    98 void ScreenArea::vSetFilter2x(EFilter2x _eFilter2x)

    99 {

   100   m_vFilter2x = pvGetFilter2x(_eFilter2x, FilterDepth32);

   101 }

   102 

   103 void ScreenArea::vSetFilterIB(EFilterIB _eFilterIB)

   104 {

   105   m_vFilterIB = pvGetFilterIB(_eFilterIB, FilterDepth32);

   106 }

   107 

   108 void ScreenArea::vDrawPixels(u8 * _puiData)

   109 {

   110   if (m_vFilterIB != NULL)

   111   {

   112     m_vFilterIB(_puiData + m_iAreaWidth * 2 + 4,

   113                 m_iAreaWidth * 2 + 4,

   114                 m_iWidth,

   115                 m_iHeight);

   116   }

   117 

   118   if (m_iScale == 1)

   119   {

   120     u32 * puiSrc = (u32 *)_puiData + m_iWidth + 1;

   121     u32 * puiPixel = m_puiPixels;

   122     for (int y = 0; y < m_iHeight; y++)

   123     {

   124       for (int x = 0; x < m_iWidth; x++)

   125       {

   126         *puiPixel++ = *puiSrc++;

   127       }

   128       puiSrc++;

   129     }

   130   }

   131   else if (m_iScale == 2 && m_vFilter2x != NULL)

   132   {

   133     m_vFilter2x(_puiData + m_iAreaWidth * 2 + 4,

   134                 m_iAreaWidth * 2 + 4,

   135                 m_puiDelta,

   136                 (u8 *)m_puiPixels,

   137                 m_iRowStride,

   138                 m_iWidth,

   139                 m_iHeight);

   140   }

   141   else

   142   {

   143     u32 * puiSrc = (u32 *)_puiData + m_iWidth + 1;

   144     u32 * puiSrc2;

   145     u32 * puiPixel = m_puiPixels;

   146     for (int y = 0; y < m_iHeight; y++)

   147     {

   148       for (int j = 0; j < m_iScale; j++)

   149       {

   150         puiSrc2 = puiSrc;

   151         for (int x = 0; x < m_iWidth; x++)

   152         {

   153           for (int i = 0; i < m_iScale; i++)

   154           {

   155             *puiPixel++ = *puiSrc2;

   156           }

   157           puiSrc2++;

   158         }

   159       }

   160       puiSrc = puiSrc2 + 1;

   161     }

   162   }

   163 

   164   queue_draw_area(0, 0, m_iAreaWidth, m_iAreaHeight);

   165 }

   166 

   167 void ScreenArea::vDrawColor(u32 _uiColor)

   168 {

   169   _uiColor = GUINT32_TO_BE(_uiColor) << 8;

   170 

   171   u32 * puiPixel = m_puiPixels;

   172   u32 * puiEnd   = m_puiPixels + m_iAreaWidth * m_iAreaHeight;

   173   while (puiPixel != puiEnd)

   174   {

   175     *puiPixel++ = _uiColor;

   176   }

   177 

   178   queue_draw_area(0, 0, m_iAreaWidth, m_iAreaHeight);

   179 }

   180 

   181 void ScreenArea::vUpdateSize()

   182 {

   183   if (m_puiPixels != NULL)

   184   {

   185     delete[] m_puiPixels;

   186   }

   187 

   188   if (m_puiDelta != NULL)

   189   {

   190     delete[] m_puiDelta;

   191   }

   192 

   193   m_iAreaWidth  = m_iScale * m_iWidth;

   194   m_iAreaHeight = m_iScale * m_iHeight;

   195   m_iRowStride  = m_iAreaWidth * 4;

   196 

   197   m_puiPixels = new u32[m_iAreaWidth * m_iAreaHeight];

   198 

   199   m_puiDelta = new u8[(m_iWidth + 2) * (m_iHeight + 2) * 4];

   200   memset(m_puiDelta, 255, (m_iWidth + 2) * (m_iHeight + 2) * 4);

   201 

   202   set_size_request(m_iAreaWidth, m_iAreaHeight);

   203 }

   204 

   205 void ScreenArea::vStartCursorTimeout()

   206 {

   207   m_oCursorSig.disconnect();

   208   m_oCursorSig = Glib::signal_timeout().connect(

   209     SigC::slot(*this, &ScreenArea::bOnCursorTimeout),

   210     2000);

   211 }

   212 

   213 void ScreenArea::vStopCursorTimeout()

   214 {

   215   m_oCursorSig.disconnect();

   216 }

   217 

   218 void ScreenArea::vHideCursor()

   219 {

   220   get_window()->set_cursor(*m_poEmptyCursor);

   221   m_bShowCursor = false;

   222 }

   223 

   224 void ScreenArea::vShowCursor()

   225 {

   226   get_window()->set_cursor();

   227   m_bShowCursor = true;

   228 }

   229 

   230 bool ScreenArea::on_expose_event(GdkEventExpose * _pstEvent)

   231 {

   232   if (_pstEvent->area.x + _pstEvent->area.width > m_iAreaWidth

   233       || _pstEvent->area.y + _pstEvent->area.height > m_iAreaHeight)

   234   {

   235     return false;

   236   }

   237 

   238   guchar * puiAreaPixels = (guchar *)m_puiPixels;

   239 

   240   if (_pstEvent->area.x != 0)

   241   {

   242     puiAreaPixels += _pstEvent->area.x << 2;

   243   }

   244 

   245   if (_pstEvent->area.y != 0)

   246   {

   247     puiAreaPixels += _pstEvent->area.y * m_iRowStride;

   248   }

   249 

   250   get_window()->draw_rgb_32_image(get_style()->get_fg_gc(get_state()),

   251                                   _pstEvent->area.x,

   252                                   _pstEvent->area.y,

   253                                   _pstEvent->area.width,

   254                                   _pstEvent->area.height,

   255                                   Gdk::RGB_DITHER_MAX,

   256                                   puiAreaPixels,

   257                                   m_iRowStride);

   258   return true;

   259 }

   260 

   261 bool ScreenArea::on_motion_notify_event(GdkEventMotion * _pstEvent)

   262 {

   263   if (! m_bShowCursor)

   264   {

   265     vShowCursor();

   266   }

   267   vStartCursorTimeout();

   268   return false;

   269 }

   270 

   271 bool ScreenArea::on_enter_notify_event(GdkEventCrossing * _pstEvent)

   272 {

   273   vStartCursorTimeout();

   274   return false;

   275 }

   276 

   277 bool ScreenArea::on_leave_notify_event(GdkEventCrossing * _pstEvent)

   278 {

   279   vStopCursorTimeout();

   280   if (! m_bShowCursor)

   281   {

   282     vShowCursor();

   283   }

   284   return false;

   285 }

   286 

   287 bool ScreenArea::bOnCursorTimeout()

   288 {

   289   vHideCursor();

   290   return false;

   291 }

   292 

   293 } // namespace VBA
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:31:27 -0600
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