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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).
*/
#include <pthread.h>
#include <stack>
#include <list>
#include <lib/base/estring.h>
#include <lib/base/ringbuffer.h>
#include <lib/gdi/erect.h>
#include <lib/base/elock.h>
#include <lib/gdi/gpixmap.h>
class eTextPara;
class gDC;
struct gOpcode
{
enum Opcode
{
begin,
renderText,
renderPara,
fill,
blit,
setPalette,
mergePalette,
line,
clip,
flush,
end,
shutdown
} opcode;
union para
{
struct pbegin
{
eRect area;
pbegin(const eRect &area): area(area) { }
} *begin;
struct pfill
{
eRect area;
gColor color;
pfill(const eRect &area, gColor color): area(area), color(color) { }
} *fill;
struct prenderText
{
gFont font;
eRect area;
eString text;
gRGB foregroundColor, backgroundColor;
prenderText(const gFont &font, const eRect &area, const eString &text, const gRGB &foregroundColor, const gRGB &backgroundColor):
font(font), area(area), text(text), foregroundColor(foregroundColor), backgroundColor(backgroundColor) { }
} *renderText;
struct prenderPara
{
ePoint offset;
eTextPara *textpara;
gRGB foregroundColor, backgroundColor;
prenderPara(const ePoint &offset, eTextPara *textpara, const gRGB &foregroundColor, const gRGB &backgroundColor)
: offset(offset), textpara(textpara), foregroundColor(foregroundColor), backgroundColor(backgroundColor) { }
} *renderPara;
struct psetPalette
{
gPalette *palette;
psetPalette(gPalette *palette): palette(palette) { }
} *setPalette;
struct pblit
{
ePtr<gPixmap> pixmap;
ePoint position;
eRect clip;
pblit(gPixmap *pixmap, const ePoint &position, const eRect &clip)
: pixmap(pixmap), position(position), clip(clip) { }
} *blit;
struct pmergePalette
{
ePtr<gPixmap> target;
pmergePalette(gPixmap *target): target(target) { }
} *mergePalette;
struct pline
{
ePoint start, end;
gColor color;
pline(const ePoint &start, const ePoint &end, gColor color): start(start), end(end), color(color) { }
} *line;
struct pclip
{
eRect clip;
pclip(const eRect &clip): clip(clip) { }
} *clip;
} parm;
int flags;
gDC *dc;
};
class gRC
{
static gRC *instance;
static void *thread_wrapper(void *ptr);
pthread_t the_thread;
void *thread();
eLock queuelock;
queueRingBuffer<gOpcode> queue;
public:
gRC();
virtual ~gRC();
void submit(const gOpcode &o)
{
static int collected=0;
queue.enqueue(o);
collected++;
if (o.opcode==gOpcode::end)
{
queuelock.unlock(collected);
#ifdef SYNC_PAINT
thread();
#endif
collected=0;
}
}
static gRC &getInstance();
};
class gPainter
{
gDC &dc;
gRC &rc;
friend class gRC;
gOpcode *beginptr;
/* paint states */
// std::stack<eRect, std::list<eRect> > cliparea;
std::stack<eRect> cliparea;
gFont font;
gColor foregroundColor, backgroundColor;
ePoint logicalZero;
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 setFont(const gFont &font);
void renderText(const eRect &position, const std::string &string, int flags=0);
void renderPara(eTextPara ¶, ePoint offset=ePoint(0, 0));
void fill(const eRect &area);
void clear();
void gPainter::blit(gPixmap *pixmap, ePoint pos, eRect clip=eRect(), int flags=0)
{
gOpcode o;
o.dc=&dc;
o.opcode=gOpcode::blit;
pos+=logicalZero;
clip.moveBy(logicalZero.x(), logicalZero.y());
o.parm.blit=new gOpcode::para::pblit(pixmap, pos, clip);
o.flags=flags;
rc.submit(o);
}
void setPalette(gRGB *colors, int start=0, int len=256);
void mergePalette(gPixmap *target);
void line(ePoint start, ePoint end);
void setLogicalZero(ePoint abs);
void moveLogicalZero(ePoint rel);
void resetLogicalZero();
void clip(eRect clip);
void clippop();
void flush();
};
class gDC
{
protected:
eLock dclock;
public:
virtual void exec(gOpcode *opcode)=0;
virtual RESULT getPixmap(ePtr<gPixmap> &)=0;
virtual eSize getSize()=0;
virtual const eRect &getClip()=0;
virtual gRGB getRGB(gColor col)=0;
virtual ~gDC();
void lock() { dclock.lock(1); }
void unlock() { dclock.unlock(1); }
};
class gPixmapDC: public gDC
{
protected:
ePtr<gPixmap> pixmap;
eRect clip;
void exec(gOpcode *opcode);
gPixmapDC();
public:
gPixmapDC(gPixmap *pixmap);
virtual ~gPixmapDC();
RESULT getPixmap(ePtr<gPixmap> &ptr) { ptr = pixmap; return 0; }
gRGB getRGB(gColor col);
const eRect &getClip() { return clip; }
virtual eSize getSize() { return eSize(pixmap->x, pixmap->y); }
};
#endif
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