Display.cc

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#include "pedigree/kernel/Log.h"
#include "pedigree/kernel/machine/Display.h"
#include "pedigree/kernel/utilities/Iterator.h"
#include "pedigree/kernel/utilities/String.h"
#include "pedigree/kernel/utilities/utility.h"
 
Display::ScreenMode::ScreenMode()
    : id(0),
      width(0),
      height(0),
      refresh(0),
      framebuffer(0),
      pf(),
      pf2(),
      bytesPerLine(0),
      bytesPerPixel(0),
      textMode(false) {}
 
Display::Display() {
  m_SpecificType.assign("Generic Display", 16);
}
 
Display::Display(Device* p) : Device(p) {}
 
Display::~Display() {}
 
Device::Type Display::getType() {
  return Device::Display;
}
 
void Display::getName(String& str) {
  str.assign("Generic Display", 16);
}
 
void Display::dump(String& str) {
  str.assign("Generic Display", 16);
}
 
void* Display::getFramebuffer() {
  return 0;
}
 
Display::rgb_t* Display::newBuffer() {
  return 0;
}
 
void Display::setCurrentBuffer(rgb_t* pBuffer) {}
 
void Display::updateBuffer(rgb_t* pBuffer, size_t x1, size_t y1, size_t x2, size_t y2) {}
 
void Display::killBuffer(rgb_t* pBuffer) {}
 
void Display::bitBlit(rgb_t* pBuffer, size_t fromX, size_t fromY, size_t toX, size_t toY,
                      size_t width, size_t height) {}
 
void Display::fillRectangle(rgb_t* pBuffer, size_t x, size_t y, size_t width, size_t height,
                            rgb_t colour) {}
 
bool Display::getPixelFormat(PixelFormat& pf) {
  return false;
}
 
bool Display::getCurrentScreenMode(ScreenMode& sm) {
  return false;
}
 
bool Display::getScreenModes(List<ScreenMode*>& sms) {
  return false;
}
 
bool Display::setScreenMode(ScreenMode sm) {
  return false;
}
 
bool Display::setScreenMode(size_t modeId) {
  Display::ScreenMode* pSm = 0;
 
  List<Display::ScreenMode*> modes;
  if (!getScreenModes(modes))
    return false;
  for (List<Display::ScreenMode*>::Iterator it = modes.begin(); it != modes.end(); it++) {
    if ((*it)->id == modeId) {
      pSm = *it;
      break;
    }
  }
  if (pSm == 0) {
    ERROR("Screenmode not found: " << modeId);
    return false;
  }
 
  return setScreenMode(*pSm);
}
 
bool Display::setScreenMode(size_t nWidth, size_t nHeight, size_t nBpp) {
  // This default implementation is enough for VBE
 
  Display::ScreenMode* pSm = 0;
 
  List<Display::ScreenMode*> modes;
  if (!getScreenModes(modes))
    return false;
  for (List<Display::ScreenMode*>::Iterator it = modes.begin(); it != modes.end(); it++) {
    if (((*it)->width == nWidth) && ((*it)->height == nHeight)) {
      if ((*it)->pf.nBpp == nBpp) {
        pSm = *it;
        break;
      }
    }
  }
  if (pSm == 0) {
    ERROR("Screenmode not found: " << Dec << nWidth << "x" << nHeight << "x" << nBpp << Hex);
    return false;
  }
 
  return setScreenMode(*pSm);
}