forked from KolibriOS/kolibrios
327 lines
12 KiB
C
327 lines
12 KiB
C
/*!
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\file Draw_Round.c
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\author Mario Palomo <mpalomo@ihman.com>
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\author Jose M. de la Huerga Fernández
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\author Pepe González Mora
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\date 05-2002
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Foundation,
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Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*Circle arcs*/
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#define SDL_DRAW_PUTPIXEL_CIRCLE_BPP(A, B, C) \
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*(##A##(##B##(Uint8*)super->pixels + (Ycenter-x)*super->pitch + \
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(Xcenter - corner)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Ycenter-corner)*super->pitch + \
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(Xcenter - x)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Ycenter-corner)*super->pitch + \
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(X2center + x)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Ycenter-x)*super->pitch + \
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(X2center + corner)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Y2center+corner)*super->pitch + \
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(X2center + x)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Y2center+x)*super->pitch + \
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(X2center + corner)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Y2center+corner)*super->pitch + \
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(Xcenter - x)*SDL_DRAW_BPP)) = C##; \
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*(##A##(##B##(Uint8*)super->pixels + (Y2center+x)*super->pitch + \
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(Xcenter - corner)*SDL_DRAW_BPP)) = C##;
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#if SDL_DRAW_BPP == 1
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#define SDL_DRAW_PUTPIXEL_CIRCLE SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,0+,color)
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#elif SDL_DRAW_BPP == 2
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#define SDL_DRAW_PUTPIXEL_CIRCLE SDL_DRAW_PUTPIXEL_CIRCLE_BPP((Uint16*),0+,color)
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#elif SDL_DRAW_BPP == 3
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#define SDL_DRAW_PUTPIXEL_CIRCLE \
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SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,1+,colorbyte1) \
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if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \
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SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,0+,colorbyte2) \
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SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,2+,colorbyte0) \
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}else{ \
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SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,0+,colorbyte0) \
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SDL_DRAW_PUTPIXEL_CIRCLE_BPP(0+,2+,colorbyte2) \
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}
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#elif SDL_DRAW_BPP == 4
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#define SDL_DRAW_PUTPIXEL_CIRCLE SDL_DRAW_PUTPIXEL_CIRCLE_BPP((Uint32*),0+,color)
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#endif /*SDL_DRAW_BPP*/
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/*Rectangles*/
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#if SDL_DRAW_BPP == 1
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#define SDL_DRAW_PUTPIXEL \
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memset(p0, color, dx); \
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memset(p1, color, dx); \
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\
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if (h<3) return; \
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p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0; \
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p1 = (Uint8*)super->pixels + Ycenter*super->pitch + x0+w-1; \
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i=dy; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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*p0 = color; p0+=super->pitch; \
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*p1 = color; p1+=super->pitch; \
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case 3: \
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*p0 = color; p0+=super->pitch; \
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*p1 = color; p1+=super->pitch; \
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case 2: \
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*p0 = color; p0+=super->pitch; \
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*p1 = color; p1+=super->pitch; \
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case 1: \
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*p0 = color; p0+=super->pitch; \
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*p1 = color; p1+=super->pitch; \
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}while( (i-=4) > 0 ); \
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}
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#elif SDL_DRAW_BPP == 2
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#define SDL_DRAW_PUTPIXEL \
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i=dx; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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*(Uint16*)p0 = color; p0+=2; \
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*(Uint16*)p1 = color; p1+=2; \
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case 3: \
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*(Uint16*)p0 = color; p0+=2; \
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*(Uint16*)p1 = color; p1+=2; \
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case 2: \
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*(Uint16*)p0 = color; p0+=2; \
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*(Uint16*)p1 = color; p1+=2; \
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case 1: \
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*(Uint16*)p0 = color; p0+=2; \
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*(Uint16*)p1 = color; p1+=2; \
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}while( (i-=4) > 0 ); \
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} \
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if (h<3) return; \
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p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0*2; \
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p1 = (Uint8*)super->pixels + Ycenter*super->pitch + (x0+w-1)*2; \
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i=dy; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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*(Uint16*)p0 = color; p0+=super->pitch; \
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*(Uint16*)p1 = color; p1+=super->pitch; \
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case 3: \
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*(Uint16*)p0 = color; p0+=super->pitch; \
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*(Uint16*)p1 = color; p1+=super->pitch; \
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case 2: \
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*(Uint16*)p0 = color; p0+=super->pitch; \
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*(Uint16*)p1 = color; p1+=super->pitch; \
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case 1: \
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*(Uint16*)p0 = color; p0+=super->pitch; \
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*(Uint16*)p1 = color; p1+=super->pitch; \
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}while( (i-=4) > 0 ); \
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}
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#elif SDL_DRAW_BPP == 3
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#define SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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if (SDL_BYTEORDER == SDL_BIG_ENDIAN) { \
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p0[0] = colorbyte2; \
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p0[1] = colorbyte1; \
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p0[2] = colorbyte0; \
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p1[0] = colorbyte2; \
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p1[1] = colorbyte1; \
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p1[2] = colorbyte0; \
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} else { \
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p0[0] = colorbyte0; \
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p0[1] = colorbyte1; \
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p0[2] = colorbyte2; \
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p1[0] = colorbyte0; \
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p1[1] = colorbyte1; \
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p1[2] = colorbyte2; \
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}
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#define SDL_DRAW_PUTPIXEL \
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i=dx; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=3; p1+=3; \
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case 3: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=3; p1+=3; \
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case 2: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=3; p1+=3; \
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case 1: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=3; p1+=3; \
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}while( (i-=4) > 0 ); \
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} \
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if (h<3) return; \
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p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0*3; \
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p1 = (Uint8*)super->pixels + Ycenter*super->pitch + (x0+w-1)*3; \
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i=dy; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=super->pitch; p1+=super->pitch; \
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case 3: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=super->pitch; p1+=super->pitch; \
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case 2: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=super->pitch; p1+=super->pitch; \
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case 1: \
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SDL_DRAW_PUTPIXEL_BPP_3_AUX \
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p0+=super->pitch; p1+=super->pitch; \
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}while( (i-=4) > 0 ); \
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}
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#elif SDL_DRAW_BPP == 4
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#ifdef __linux__
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#define SDL_DRAW_WMEMSET_START \
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if (sizeof(wchar_t) == sizeof(Uint32)) { \
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wmemset((wchar_t*)p0, color, dx); \
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wmemset((wchar_t*)p1, color, dx); \
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} else {
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#define SDL_DRAW_WMEMSET_END }
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#else
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#define SDL_DRAW_WMEMSET_START
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#define SDL_DRAW_WMEMSET_END
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#endif
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#define SDL_DRAW_PUTPIXEL \
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SDL_DRAW_WMEMSET_START \
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i=dx; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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*(Uint32*)p0 = color; p0+=4; \
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*(Uint32*)p1 = color; p1+=4; \
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case 3: \
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*(Uint32*)p0 = color; p0+=4; \
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*(Uint32*)p1 = color; p1+=4; \
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case 2: \
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*(Uint32*)p0 = color; p0+=4; \
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*(Uint32*)p1 = color; p1+=4; \
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case 1: \
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*(Uint32*)p0 = color; p0+=4; \
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*(Uint32*)p1 = color; p1+=4; \
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}while( (i-=4) > 0 ); \
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} \
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SDL_DRAW_WMEMSET_END \
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if (h<3) return; \
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p0 = (Uint8*)super->pixels + Ycenter*super->pitch + x0*4; \
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p1 = (Uint8*)super->pixels + Ycenter*super->pitch + (x0+w-1)*4; \
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i=dy; \
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switch( i % 4 ) { \
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do{ \
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case 0: \
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*(Uint32*)p0 = color; p0+=super->pitch; \
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*(Uint32*)p1 = color; p1+=super->pitch; \
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case 3: \
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*(Uint32*)p0 = color; p0+=super->pitch; \
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*(Uint32*)p1 = color; p1+=super->pitch; \
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case 2: \
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*(Uint32*)p0 = color; p0+=super->pitch; \
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*(Uint32*)p1 = color; p1+=super->pitch; \
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case 1: \
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*(Uint32*)p0 = color; p0+=super->pitch; \
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*(Uint32*)p1 = color; p1+=super->pitch; \
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}while( (i-=4) > 0 ); \
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}
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#endif /*SDL_DRAW_BPP*/
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void SDL_DRAWFUNCTION(SDL_Surface *super,
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Sint16 x0,Sint16 y0, Uint16 w,Uint16 h,
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Uint16 corner, Uint32 color)
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{
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#if SDL_DRAW_BPP == 3
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Uint8 colorbyte0 = (Uint8) (color & 0xff);
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Uint8 colorbyte1 = (Uint8) ((color >> 8) & 0xff);
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Uint8 colorbyte2 = (Uint8) ((color >> 16) & 0xff);
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#endif
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register Uint8 *p0;
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register Uint8 *p1;
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register Sint16 i;
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Sint16 dx, dy;
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Sint16 Xcenter, Ycenter, X2center, Y2center;
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Sint16 x = 0;
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Sint16 rightInc = 6;
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Sint16 d, diagonalInc;
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if (w==0 || h==0) return;
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/*TODO: We can do better :-)*/
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if (corner!=0) {
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d = w<h ? w : h;
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--corner;
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if (corner!=0 && corner+2 >= d ) {
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if (corner+2 == d) --corner;
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else corner = 0;
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}
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}
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d = 3 - (corner<<1);
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diagonalInc = 10 - (corner<<2);
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/*Rectangles*/
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dx = w - (corner<<1);
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Xcenter = x0+corner;
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dy = h - (corner<<1);
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Ycenter = y0+corner;
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/*Centers*/
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X2center=Xcenter+dx-1;
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Y2center=Ycenter+dy-1;
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p0 = (Uint8*)super->pixels + y0 * super->pitch + Xcenter*SDL_DRAW_BPP;
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p1 = (Uint8*)super->pixels + (y0+h-1) * super->pitch + Xcenter*SDL_DRAW_BPP;
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SDL_DRAW_PUTPIXEL
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while (x < corner) {
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SDL_DRAW_PUTPIXEL_CIRCLE
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if (d >= 0) {
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d += diagonalInc;
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diagonalInc += 8;
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--corner;
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} else {
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d += rightInc;
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diagonalInc += 4;
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}
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rightInc += 4;
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++x;
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}/*while*/
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}/*Draw_Round*/
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#undef SDL_DRAW_PUTPIXEL
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#undef SDL_DRAW_PUTPIXEL_CIRCLE
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#undef SDL_DRAW_PUTPIXEL_CIRCLE_BPP
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#undef SDL_DRAW_WMEMSET_START
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#undef SDL_DRAW_WMEMSET_END
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