Merge branch 'experimental' into vuplus_sum_exper
[vuplus_dvbapp] / lib / gdi / font.cpp
index b7d3c1d..a5db43a 100644 (file)
@@ -6,6 +6,11 @@
 #include <pthread.h>
 #include <sys/types.h>
 #include <unistd.h>
+#include <byteswap.h>
+
+#ifndef BYTE_ORDER
+#error "no BYTE_ORDER defined!"
+#endif
 
 // use this for init Freetype...
 #include <ft2build.h>
@@ -341,6 +346,8 @@ int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt gly
                                i->x-=offset.x();
                                i->y-=offset.y();
                                i->bbox.moveBy(-offset.x(), -offset.y());
+                               --lineChars.back();
+                               ++charCount;
                        } while (i-- != glyphs.rbegin()); // rearrange them into the next line
                        cursor+=ePoint(linelength, 0);  // put the cursor after that line
                } else
@@ -378,6 +385,7 @@ int eTextPara::appendGlyph(Font *current_font, FT_Face current_face, FT_UInt gly
        ng.glyph_index = glyphIndex;
        ng.flags = flags;
        glyphs.push_back(ng);
+       ++charCount;
 
                /* when we have a SHY, don't xadvance. It will either be the last in the line (when used for breaking), or not displayed. */
        if (!(flags & GS_SOFTHYPHEN))
@@ -425,7 +433,13 @@ void eTextPara::newLine(int flags)
        cursor.setX(left);
        previous=0;
        int linegap=current_face->size->metrics.height-(current_face->size->metrics.ascender+current_face->size->metrics.descender);
+
+       lineOffsets.push_back(cursor.y());
+       lineChars.push_back(charCount);
+       charCount=0;
+
        cursor+=ePoint(0, (current_face->size->metrics.ascender+current_face->size->metrics.descender+linegap)>>6);
+
        if (maximum.height()<cursor.y())
                maximum.setHeight(cursor.y());
        previous=0;
@@ -595,22 +609,20 @@ int eTextPara::renderString(const char *string, int rflags)
        shape(uc_shape, uc_string);
        
                // now do the usual logical->visual reordering
-#ifdef HAVE_FRIBIDI    
+       int size=uc_shape.size();
+#ifdef HAVE_FRIBIDI
        FriBidiCharType dir=FRIBIDI_TYPE_ON;
-       {
-               int size=uc_shape.size();
-               uc_visual.resize(size);
-               // gaaanz lahm, aber anders geht das leider nicht, sorry.
-               FriBidiChar array[size], target[size];
-               std::copy(uc_shape.begin(), uc_shape.end(), array);
-               fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
-               uc_visual.assign(target, target+size);
-       }
+       uc_visual.resize(size);
+       // gaaanz lahm, aber anders geht das leider nicht, sorry.
+       FriBidiChar array[size], target[size];
+       std::copy(uc_shape.begin(), uc_shape.end(), array);
+       fribidi_log2vis(array, size, &dir, target, 0, 0, 0);
+       uc_visual.assign(target, target+size);
 #else
        uc_visual=uc_shape;
 #endif
 
-       glyphs.reserve(uc_visual.size());
+       glyphs.reserve(size);
        
        int nextflags = 0;
        
@@ -704,8 +716,19 @@ nprint:    isprintable=0;
        calc_bbox();
 #ifdef HAVE_FRIBIDI
        if (dir & FRIBIDI_MASK_RTL)
+       {
                realign(dirRight);
+               doTopBottomReordering=true;
+       }
 #endif
+
+       if (charCount)
+       {
+               lineOffsets.push_back(cursor.y());
+               lineChars.push_back(charCount);
+               charCount=0;
+       }
+
        return 0;
 }
 
@@ -748,8 +771,9 @@ void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, cons
        gColor *lookup8, lookup8_invert[16];
        gColor *lookup8_normal=0;
 
+       __u16 lookup16_normal[16], lookup16_invert[16], *lookup16;
        __u32 lookup32_normal[16], lookup32_invert[16], *lookup32;
-       
+
        if (surface->bpp == 8)
        {
                if (surface->clut.data)
@@ -763,10 +787,33 @@ void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, cons
                        opcode=0;
                } else
                        opcode=1;
+       } else if (surface->bpp == 16)
+       {
+               opcode=2;
+               for (int i=0; i<16; ++i)
+               {
+#define BLEND(y, x, a) (y + (((x-y) * a)>>8))
+                       unsigned char da = background.a, dr = background.r, dg = background.g, db = background.b;
+                       int sa = i * 16;
+                       if (sa < 256)
+                       {
+                               dr = BLEND(background.r, foreground.r, sa) & 0xFF;
+                               dg = BLEND(background.g, foreground.g, sa) & 0xFF;
+                               db = BLEND(background.b, foreground.b, sa) & 0xFF;
+                       }
+#undef BLEND
+#if BYTE_ORDER == LITTLE_ENDIAN
+                       lookup16_normal[i] = bswap_16(((db >> 3) << 11) | ((dg >> 2) << 5) | (dr >> 3));
+#else
+                       lookup16_normal[i] = ((db >> 3) << 11) | ((dg >> 2) << 5) | (dr >> 3);
+#endif
+                       da ^= 0xFF;
+               }
+               for (int i=0; i<16; ++i)
+                       lookup16_invert[i]=lookup16_normal[i^0xF];
        } else if (surface->bpp == 32)
        {
                opcode=3;
-
                for (int i=0; i<16; ++i)
                {
 #define BLEND(y, x, a) (y + (((x-y) * a)>>8))
@@ -791,35 +838,47 @@ void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, cons
                eWarning("can't render to %dbpp", surface->bpp);
                return;
        }
-       
+
        gRegion area(eRect(0, 0, surface->x, surface->y));
        gRegion clip = dc.getClip() & area;
 
        int buffer_stride=surface->stride;
-       
+
        for (unsigned int c = 0; c < clip.rects.size(); ++c)
        {
-               for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i)
+               std::list<int>::reverse_iterator line_offs_it(lineOffsets.rbegin());
+               std::list<int>::iterator line_chars_it(lineChars.begin());
+               int line_offs=0;
+               int line_chars=0;
+               for (glyphString::iterator i(glyphs.begin()); i != glyphs.end(); ++i, --line_chars)
                {
+                       while(!line_chars)
+                       {
+                               line_offs = *(line_offs_it++);
+                               line_chars = *(line_chars_it++);
+                       }
+
                        if (i->flags & GS_SOFTHYPHEN)
                                continue;
 
                        if (!(i->flags & GS_INVERT))
                        {
                                lookup8 = lookup8_normal;
+                               lookup16 = lookup16_normal;
                                lookup32 = lookup32_normal;
                        } else
                        {
                                lookup8 = lookup8_invert;
+                               lookup16 = lookup16_invert;
                                lookup32 = lookup32_invert;
                        }
-               
+
                        static FTC_SBit glyph_bitmap;
                        if (fontRenderClass::instance->getGlyphBitmap(&i->font->font, i->glyph_index, &glyph_bitmap))
                                continue;
                        int rx=i->x+glyph_bitmap->left + offset.x();
-                       int ry=i->y-glyph_bitmap->top  + offset.y();
-               
+                       int ry=(doTopBottomReordering ? line_offs : i->y) - glyph_bitmap->top + offset.y();
+
                        __u8 *d=(__u8*)(surface->data)+buffer_stride*ry+rx*surface->bypp;
                        __u8 *s=glyph_bitmap->buffer;
                        register int sx=glyph_bitmap->width;
@@ -845,46 +904,76 @@ void eTextPara::blit(gDC &dc, const ePoint &offset, const gRGB &background, cons
                                d+=diff*buffer_stride;
                        }
                        if (sx>0)
-                               for (int ay=0; ay<sy; ay++)
-                               {
-                                       if (!opcode)            // 4bit lookup to 8bit
+                       {
+                               switch(opcode) {
+                               case 0: // 4bit lookup to 8bit
+                                       for (int ay=0; ay<sy; ay++)
                                        {
                                                register __u8 *td=d;
                                                register int ax;
-                                               
                                                for (ax=0; ax<sx; ax++)
-                                               {       
+                                               {
                                                        register int b=(*s++)>>4;
                                                        if(b)
                                                                *td++=lookup8[b];
                                                        else
                                                                td++;
                                                }
-                                       } else if (opcode == 1) // 8bit direct
+                                               s+=glyph_bitmap->pitch-sx;
+                                               d+=buffer_stride;
+                                       }
+                                       break;
+                               case 1: // 8bit direct
+                                       for (int ay=0; ay<sy; ay++)
                                        {
                                                register __u8 *td=d;
                                                register int ax;
                                                for (ax=0; ax<sx; ax++)
-                                               {       
+                                               {
                                                        register int b=*s++;
                                                        *td++^=b;
                                                }
-                                       } else
+                                               s+=glyph_bitmap->pitch-sx;
+                                               d+=buffer_stride;
+                                       }
+                                       break;
+                               case 2: // 16bit
+                                       for (int ay=0; ay<sy; ay++)
+                                       {
+                                               register __u16 *td=(__u16*)d;
+                                               register int ax;
+                                               for (ax=0; ax<sx; ax++)
+                                               {
+                                                       register int b=(*s++)>>4;
+                                                       if(b)
+                                                               *td++=lookup16[b];
+                                                       else
+                                                               td++;
+                                               }
+                                               s+=glyph_bitmap->pitch-sx;
+                                               d+=buffer_stride;
+                                       }
+                                       break;
+                               case 3: // 32bit
+                                       for (int ay=0; ay<sy; ay++)
                                        {
                                                register __u32 *td=(__u32*)d;
                                                register int ax;
                                                for (ax=0; ax<sx; ax++)
-                                               {       
+                                               {
                                                        register int b=(*s++)>>4;
                                                        if(b)
                                                                *td++=lookup32[b];
                                                        else
                                                                td++;
                                                }
+                                               s+=glyph_bitmap->pitch-sx;
+                                               d+=buffer_stride;
                                        }
-                                       s+=glyph_bitmap->pitch-sx;
-                                       d+=buffer_stride;
+                               default:
+                                       break;
                                }
+                       }
                }
        }
 }