grc.h

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#ifndef __grc_h
#define __grc_h
 
/*
  gPainter ist die high-level version. die highlevel daten werden zu low level opcodes ueber
  die gRC-queue geschickt und landen beim gDC der hardwarespezifisch ist, meist aber auf einen
  gPixmap aufsetzt (und damit unbeschleunigt ist).
*/
 
// for debugging use:
//#define SYNC_PAINT
#undef SYNC_PAINT
 
#include <pthread.h>
#include <stack>
#include <list>
 
#include <string>
#include <lib/base/elock.h>
#include <lib/base/message.h>
#include <lib/gdi/erect.h>
#include <lib/gdi/gpixmap.h>
#include <lib/gdi/region.h>
#include <lib/gdi/gfont.h>
#include <lib/gdi/compositing.h>
 
class eTextPara;
 
class gDC;
struct gOpcode
{
  enum Opcode
  {
    renderText,
    renderPara,
    setFont,
 
    fill, fillRegion, clear,
    blit,
 
    setPalette,
    mergePalette,
 
    line,
 
    setBackgroundColor,
    setForegroundColor,
 
    setBackgroundColorRGB,
    setForegroundColorRGB,
 
    setOffset,
 
    setClip, addClip, popClip,
 
    flush,
 
    waitVSync,
    flip,
    notify,
 
    enableSpinner, disableSpinner, incrementSpinner,
 
    shutdown,
 
    setCompositing,
    sendShow,
    sendHide,
#ifdef USE_LIBVUGLES2
    sendShowItem,
    setFlush,
    setView,
#endif
  } opcode;
 
  gDC *dc;
  union para
  {
    struct pfillRect
    {
      eRect area;
    } *fill;
 
    struct pfillRegion
    {
      gRegion region;
    } *fillRegion;
 
    struct prenderText
    {
      eRect area;
      char *text;
      int flags;
      int border;
      gRGB bordercolor;
      int markedpos;
      int scrollpos;
      int *offset;
    } *renderText;
 
    struct prenderPara
    {
      ePoint offset;
      eTextPara *textpara;
    } *renderPara;
 
    struct psetFont
    {
      gFont *font;
    } *setFont;
 
    struct psetPalette
    {
      gPalette *palette;
    } *setPalette;
 
    struct pblit
    {
      gPixmap *pixmap;
      int flags;
      eRect position;
      eRect clip;
    } *blit;
 
    struct pmergePalette
    {
      gPixmap *target;
    } *mergePalette;
 
    struct pline
    {
      ePoint start, end;
    } *line;
 
    struct psetClip
    {
      gRegion region;
    } *clip;
 
    struct psetColor
    {
      gColor color;
    } *setColor;
 
    struct psetColorRGB
    {
      gRGB color;
    } *setColorRGB;
 
    struct psetOffset
    {
      ePoint value;
      int rel;
    } *setOffset;
 
    gCompositingData *setCompositing;
 
    struct psetShowHideInfo
    {
      ePoint point;
      eSize size;
    } *setShowHideInfo;
#ifdef USE_LIBVUGLES2
    struct psetShowItemInfo
    {
      long dir;
      ePoint point;
      eSize size;
    } *setShowItemInfo;
    
    struct psetFlush
    {
      bool enable;
    } *setFlush;
    
    struct psetViewInfo
    {
      eSize size;
    } *setViewInfo;
#endif
  } parm;
};
 
#define MAXSIZE 2048
 
    /* gRC is the singleton which controls the fifo and dispatches commands */
class gRC: public iObject, public sigc::trackable
{
  DECLARE_REF(gRC);
  friend class gPainter;
  static gRC *instance;
 
#ifndef SYNC_PAINT
  static void *thread_wrapper(void *ptr);
  pthread_t the_thread;
  pthread_mutex_t mutex;
  pthread_cond_t cond;
#endif
  void *thread();
 
  gOpcode queue[MAXSIZE];
  int rp, wp;
 
  eFixedMessagePump<int> m_notify_pump;
  void recv_notify(const int &i);
 
  ePtr<gDC> m_spinner_dc;
  int m_spinner_enabled;
 
  int m_spinneronoff;
 
  void enableSpinner();
  void disableSpinner();
 
  ePtr<gCompositingData> m_compositing;
 
  int m_prev_idle_count;
public:
  gRC();
  virtual ~gRC();
 
  void submit(const gOpcode &o);
 
#ifdef CONFIG_ION
  void lock();
  void unlock();
#endif
 
  sigc::signal0<void> notify;
 
  void setSpinnerDC(gDC *dc) { m_spinner_dc = dc; }
  void setSpinnerOnOff(int onoff) { m_spinneronoff = onoff; }
 
  static gRC *getInstance();
};
 
  /* gPainter is the user frontend, which in turn sends commands through gRC */
class gPainter
{
  ePtr<gDC> m_dc;
  ePtr<gRC> m_rc;
  friend class gRC;
 
  gOpcode *beginptr;
  void begin(const eRect &rect);
  void end();
public:
  gPainter(gDC *dc, eRect rect=eRect());
  virtual ~gPainter();
 
  void setBackgroundColor(const gColor &color);
  void setForegroundColor(const gColor &color);
 
  void setBackgroundColor(const gRGB &color);
  void setForegroundColor(const gRGB &color);
 
  void setFont(gFont *font);
    /* flags only THESE: */
  enum
  {
      // todo, make mask. you cannot align both right AND center AND block ;)
    RT_HALIGN_BIDI = 0,  /* default */
    RT_HALIGN_LEFT = 1,
    RT_HALIGN_RIGHT = 2,
    RT_HALIGN_CENTER = 4,
    RT_HALIGN_BLOCK = 8,
 
    RT_VALIGN_TOP = 0,  /* default */
    RT_VALIGN_CENTER = 16,
    RT_VALIGN_BOTTOM = 32,
 
    RT_WRAP = 64
  };
  void renderText(const eRect &position, const std::string &string, int flags=0, gRGB bordercolor=gRGB(), int border=0, int markedpos=-1, int *offset=0);
 
  void renderPara(eTextPara *para, ePoint offset=ePoint(0, 0));
 
  void fill(const eRect &area);
  void fill(const gRegion &area);
 
  void clear();
 
  enum
  {
    BT_ALPHATEST = 1,
    BT_ALPHABLEND = 2,
    BT_SCALE = 4, /* will be automatically set by blitScale */
    BT_KEEP_ASPECT_RATIO = 8,
    BT_FIXRATIO = 8,
    BT_HALIGN_CENTER = 16,
    BT_HALIGN_RIGHT = 32,
    BT_VALIGN_CENTER = 64,
    BT_VALIGN_BOTTOM = 128
  };
 
  void blitScale(gPixmap *pixmap, const eRect &pos, const eRect &clip=eRect(), int flags=0, int aflags = BT_SCALE);
  void blit(gPixmap *pixmap, ePoint pos, const eRect &clip=eRect(), int flags=0);
  void blit(gPixmap *pixmap, const eRect &pos, const eRect &clip=eRect(), int flags=0);
 
  void setPalette(gRGB *colors, int start=0, int len=256);
  void setPalette(gPixmap *source);
  void mergePalette(gPixmap *target);
 
  void line(ePoint start, ePoint end);
 
  void setOffset(ePoint abs);
  void moveOffset(ePoint rel);
  void resetOffset();
 
  void resetClip(const gRegion &clip);
  void clip(const gRegion &clip);
  void clippop();
 
  void waitVSync();
  void flip();
  void notify();
  void setCompositing(gCompositingData *comp);
 
  void flush();
  void sendShow(ePoint point, eSize size);
  void sendHide(ePoint point, eSize size);
#ifdef USE_LIBVUGLES2
  void sendShowItem(long dir, ePoint point, eSize size);
  void setFlush(bool val);
  void setView(eSize size);
#endif
};
 
class gDC: public iObject
{
  DECLARE_REF(gDC);
protected:
  ePtr<gPixmap> m_pixmap;
 
  gColor m_foreground_color, m_background_color;
  gRGB m_foreground_color_rgb, m_background_color_rgb;
  ePtr<gFont> m_current_font;
  ePoint m_current_offset;
 
  std::stack<gRegion> m_clip_stack;
  gRegion m_current_clip;
 
  ePtr<gPixmap> m_spinner_saved, m_spinner_temp;
  ePtr<gPixmap> *m_spinner_pic;
  eRect m_spinner_pos;
  int m_spinner_num, m_spinner_i;
public:
  virtual void exec(const gOpcode *opcode);
  gDC(gPixmap *pixmap);
  gDC();
  virtual ~gDC();
  gRegion &getClip() { return m_current_clip; }
  int getPixmap(ePtr<gPixmap> &pm) { pm = m_pixmap; return 0; }
  gRGB getRGB(gColor col);
  virtual eSize size() { return m_pixmap->size(); }
  virtual int islocked() const { return 0; }
 
  virtual void enableSpinner();
  virtual void disableSpinner();
  virtual void incrementSpinner();
  virtual void setSpinner(eRect pos, ePtr<gPixmap> *pic, int len);
};
 
#endif