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-rw-r--r--lib/gdi/gpixmap.cpp295
1 files changed, 295 insertions, 0 deletions
diff --git a/lib/gdi/gpixmap.cpp b/lib/gdi/gpixmap.cpp
new file mode 100644
index 00000000..c089051d
--- /dev/null
+++ b/lib/gdi/gpixmap.cpp
@@ -0,0 +1,295 @@
+#include <lib/gdi/gpixmap.h>
+
+gLookup::gLookup()
+{
+ size=0;
+ lookup=0;
+}
+
+gLookup::gLookup(int size, const gPalette &pal, const gRGB &start, const gRGB &end)
+{
+ size=0;
+ lookup=0;
+ build(size, pal, start, end);
+}
+
+void gLookup::build(int _size, const gPalette &pal, const gRGB &start, const gRGB &end)
+{
+ if (lookup)
+ {
+ delete lookup;
+ lookup=0;
+ size=0;
+ }
+ size=_size;
+ if (!size)
+ return;
+ lookup=new gColor[size];
+
+ for (int i=0; i<size; i++)
+ {
+ gRGB col;
+ if (i)
+ {
+ int rdiff=-start.r+end.r;
+ int gdiff=-start.g+end.g;
+ int bdiff=-start.b+end.b;
+ int adiff=-start.a+end.a;
+ rdiff*=i; rdiff/=(size-1);
+ gdiff*=i; gdiff/=(size-1);
+ bdiff*=i; bdiff/=(size-1);
+ adiff*=i; adiff/=(size-1);
+ col.r=start.r+rdiff;
+ col.g=start.g+gdiff;
+ col.b=start.b+bdiff;
+ col.a=start.a+adiff;
+ } else
+ col=start;
+ lookup[i]=pal.findColor(col);
+ }
+}
+
+DEFINE_REF(gPixmap);
+
+void gPixmap::fill(const eRect &area, const gColor &color)
+{
+ if ((area.height()<=0) || (area.width()<=0))
+ return;
+ if (bpp == 8)
+ for (int y=area.top(); y<area.bottom(); y++)
+ memset(((__u8*)data)+y*stride+area.left(), color.color, area.width());
+ else if (bpp == 32)
+ for (int y=area.top(); y<area.bottom(); y++)
+ {
+ __u32 *dst=(__u32*)(((__u8*)data)+y*stride+area.left()*bypp);
+ int x=area.width();
+ __u32 col;
+
+ if (clut.data && color < clut.colors)
+ col=(clut.data[color].a<<24)|(clut.data[color].r<<16)|(clut.data[color].g<<8)|(clut.data[color].b);
+ else
+ col=0x10101*color;
+ col^=0xFF000000;
+ while (x--)
+ *dst++=col;
+ }
+ else
+ eWarning("couldn't fill %d bpp", bpp);
+}
+
+void gPixmap::blit(const gPixmap &src, ePoint pos, const eRect &clip, int flag)
+{
+
+ eRect area=eRect(pos, src.getSize());
+ if (!clip.isNull())
+ area&=clip;
+ area&=eRect(ePoint(0, 0), getSize());
+ if ((area.width()<0) || (area.height()<0))
+ return;
+
+ eRect srcarea=area;
+ srcarea.moveBy(-pos.x(), -pos.y());
+
+ if ((bpp == 8) && (src.bpp==8))
+ {
+ __u8 *srcptr=(__u8*)src.data;
+ __u8 *dstptr=(__u8*)data;
+
+ srcptr+=srcarea.left()*bypp+srcarea.top()*src.stride;
+ dstptr+=area.left()*bypp+area.top()*stride;
+ for (int y=0; y<area.height(); y++)
+ {
+ if (flag & blitAlphaTest)
+ {
+ // no real alphatest yet
+ int width=area.width();
+ unsigned char *src=(unsigned char*)srcptr;
+ unsigned char *dst=(unsigned char*)dstptr;
+ // use duff's device here!
+ while (width--)
+ {
+ if (!*src)
+ {
+ src++;
+ dst++;
+ } else
+ *dst++=*src++;
+ }
+ } else
+ memcpy(dstptr, srcptr, area.width()*bypp);
+ srcptr+=src.stride;
+ dstptr+=stride;
+ }
+ } else if ((bpp == 32) && (src.bpp==8))
+ {
+ __u8 *srcptr=(__u8*)src.data;
+ __u8 *dstptr=(__u8*)data; // !!
+ __u32 pal[256];
+
+ for (int i=0; i<256; ++i)
+ {
+ if (src.clut.data && (i<src.clut.colors))
+ pal[i]=(src.clut.data[i].a<<24)|(src.clut.data[i].r<<16)|(src.clut.data[i].g<<8)|(src.clut.data[i].b);
+ else
+ pal[i]=0x010101*i;
+ pal[i]^=0xFF000000;
+ }
+
+ srcptr+=srcarea.left()*bypp+srcarea.top()*src.stride;
+ dstptr+=area.left()*bypp+area.top()*stride;
+ for (int y=0; y<area.height(); y++)
+ {
+ if (flag & blitAlphaTest)
+ {
+ // no real alphatest yet
+ int width=area.width();
+ unsigned char *src=(unsigned char*)srcptr;
+ __u32 *dst=(__u32*)dstptr;
+ // use duff's device here!
+ while (width--)
+ {
+ if (!*src)
+ {
+ src++;
+ dst++;
+ } else
+ *dst++=pal[*src++];
+ }
+ } else
+ {
+ int width=area.width();
+ unsigned char *src=(unsigned char*)srcptr;
+ __u32 *dst=(__u32*)dstptr;
+ while (width--)
+ *dst++=pal[*src++];
+ }
+ srcptr+=src.stride;
+ dstptr+=stride;
+ }
+ } else
+ eFatal("cannot blit %dbpp from %dbpp", bpp, src.bpp);
+}
+
+void gPixmap::mergePalette(const gPixmap &target)
+{
+ if ((!clut.colors) || (!target.clut.colors))
+ return;
+ gColor *lookup=new gColor[clut.colors];
+
+ for (int i=0; i<clut.colors; i++)
+ lookup[i].color=target.clut.findColor(clut.data[i]);
+
+ delete clut.data;
+ clut.colors=target.clut.colors;
+ clut.data=new gRGB[clut.colors];
+ memcpy(clut.data, target.clut.data, sizeof(gRGB)*clut.colors);
+
+ __u8 *dstptr=(__u8*)data;
+
+ for (int ay=0; ay<y; ay++)
+ {
+ for (int ax=0; ax<x; ax++)
+ dstptr[ax]=lookup[dstptr[ax]];
+ dstptr+=stride;
+ }
+
+ delete lookup;
+}
+
+void gPixmap::line(ePoint start, ePoint dst, gColor color)
+{
+int Ax=start.x(), // dieser code rult ganz ganz doll weil er ganz ganz fast ist und auch sehr gut dokumentiert is
+Ay=start.y(), Bx=dst.x(), // t. es handelt sich immerhin um den weltbekannten bresenham algorithmus der nicht nur
+By=dst.y(); int dX, dY, fbXincr, // sehr schnell ist sondern auch sehr gut dokumentiert und getestet wurde. nicht
+fbYincr, fbXYincr, dPr, dPru, P; __u8 // nur auf dem LCD der dbox, sondern auch ueberall anders. und auch auf der
+*AfbAddr = &((__u8*)data)[Ay*stride+Ax*bypp]; __u8 // dbox mit LCD soll das teil nun tun, und ich denke das tut es. ausse
+*BfbAddr = &((__u8*)data)[By*stride+Bx*bypp]; fbXincr= // rdem hat dieser algo den vorteil dass man fehler sehr leicht fi
+bypp; if ( (dX=Bx-Ax) >= 0) goto AFTERNEGX; dX=-dX; // ndet und beheben kann. das liegt nicht zuletzt an den komment
+fbXincr=-1; AFTERNEGX: fbYincr=stride; if ( (dY=By // aren. und ausserdem, je kuerzer der code, desto weniger k
+-Ay) >= 0) goto AFTERNEGY; fbYincr=-stride; dY=-dY;AFTERNEGY: // ann daran falsch sein. erwaehnte ich schon, da
+fbXYincr = fbXincr+fbYincr; if (dY > dX) goto YisIndependent; dPr = dY+ // s dieser tolle code wahnsinnig schnell
+dY; P = -dX; dPru = P+P; dY = dX>>1; XLOOP: *AfbAddr=color; *BfbAddr=color; if ((P+=dPr) > 0) // ist? bye, tmbinc
+goto RightAndUp; AfbAddr+=fbXincr; BfbAddr-=fbXincr; if ((dY=dY-1) > 0) goto XLOOP; *AfbAddr=color; if ((dX & 1)
+== 0) return; *BfbAddr=color; return; RightAndUp: AfbAddr+=fbXYincr; BfbAddr-=fbXYincr; P+=dPru; if ((dY=dY-1) >
+0) goto XLOOP; *AfbAddr=color; if ((dX & 1) == 0) return; *BfbAddr=color; return; YisIndependent: dPr = dX+dX; P
+= -dY; dPru = P+P; dX = dY>>1; YLOOP: *AfbAddr=color; *BfbAddr=color; if ((P+=dPr) > 0) goto RightAndUp2; AfbAddr
++=fbYincr; BfbAddr-=fbYincr; if ((dX=dX-1) > 0) goto YLOOP; *AfbAddr=color; if ((dY & 1) == 0) return; *BfbAddr=
+color;return; RightAndUp2: AfbAddr+=fbXYincr; BfbAddr-=fbXYincr; P+=dPru; if ((dX=dX-1) > 0) goto YLOOP; *AfbAddr
+=color; if((dY & 1) == 0) return; *BfbAddr=color; return; // nun ist der tolle code leider zu ende. tut mir leid.
+}
+
+gColor gPalette::findColor(const gRGB &rgb) const
+{
+ int difference=1<<30, best_choice=0;
+ for (int t=0; t<colors; t++)
+ {
+ int ttd;
+ int td=(signed)(rgb.r-data[t].r); td*=td; td*=(255-data[t].a);
+ ttd=td;
+ if (ttd>=difference)
+ continue;
+ td=(signed)(rgb.g-data[t].g); td*=td; td*=(255-data[t].a);
+ ttd+=td;
+ if (ttd>=difference)
+ continue;
+ td=(signed)(rgb.b-data[t].b); td*=td; td*=(255-data[t].a);
+ ttd+=td;
+ if (ttd>=difference)
+ continue;
+ td=(signed)(rgb.a-data[t].a); td*=td; td*=255;
+ ttd+=td;
+ if (ttd>=difference)
+ continue;
+ difference=ttd;
+ best_choice=t;
+ }
+ return best_choice;
+}
+
+gPixmap::gPixmap()
+{
+}
+
+gPixmap::~gPixmap()
+{
+}
+
+gImage::gImage(eSize size, int _bpp)
+{
+ x=size.width();
+ y=size.height();
+ bpp=_bpp;
+ switch (bpp)
+ {
+ case 8:
+ bypp=1;
+ break;
+ case 15:
+ case 16:
+ bypp=2;
+ break;
+ case 24: // never use 24bit mode
+ case 32:
+ bypp=4;
+ break;
+ default:
+ bypp=(bpp+7)/8;
+ }
+ stride=x*bypp;
+ if (bpp==8)
+ {
+ clut.colors=256;
+ clut.data=new gRGB[clut.colors];
+ } else
+ {
+ clut.colors=0;
+ clut.data=0;
+ }
+ data=new char[x*y*bypp];
+}
+
+gImage::~gImage()
+{
+ delete[] clut.data;
+ delete[] (char*)data;
+}
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