484 lines
10 KiB
C
484 lines
10 KiB
C
#include "evas_common.h"
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#include <math.h>
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typedef struct _Rectangular_Data Rectangular_Data;
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struct _Rectangular_Data
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{
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int sx, sy, s;
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float r0;
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};
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static Rectangular_Data rectangular_data = {32, 32, 32, 0.0};
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static void
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rectangular_setup_geom(RGBA_Gradient *gr, int spread);
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static int
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rectangular_has_alpha(RGBA_Gradient *gr, int spread);
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static int
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rectangular_get_map_len(RGBA_Gradient *gr, int spread);
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static Gfx_Func_Gradient_Span
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rectangular_get_span_func(RGBA_Gradient *gr, int spread, unsigned char aa);
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static RGBA_Gradient_Type rectangular = {"rectangular", &rectangular_data, rectangular_setup_geom, rectangular_has_alpha, rectangular_get_map_len, rectangular_get_span_func};
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/** internal functions **/
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static void
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rectangular_reflect_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
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static void
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rectangular_repeat_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
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static void
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rectangular_restrict_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
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static void
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rectangular_reflect(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
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static void
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rectangular_repeat(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
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static void
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rectangular_restrict(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data);
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RGBA_Gradient_Type *
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evas_common_gradient_rectangular_get(void)
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{
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return &rectangular;
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}
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static void
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rectangular_setup_geom(RGBA_Gradient *gr, int spread)
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{
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int err = 1;
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char *s, *p, key[256];
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float r0 = 0.0;
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if (!gr || (gr->type.geometer != &rectangular)) return;
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rectangular_data.sx = gr->fill.w;
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rectangular_data.sy = gr->fill.h;
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rectangular_data.s = rectangular_data.sx;
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if (rectangular_data.sy > rectangular_data.sx)
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rectangular_data.s = rectangular_data.sy;
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rectangular_data.r0 = 0.0;
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if (!gr->type.params || !*(gr->type.params))
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return;
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s = strdup(gr->type.params);
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if (!s) return;
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p = s;
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while ((p = evas_common_gradient_get_key_fval(p, key, &r0)))
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{
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if (!strcmp(key, "inner_radius"))
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err = 0;
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else
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{
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err = 1;
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goto done;
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}
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}
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done:
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if (!err)
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{
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if (r0 < 0.0) r0 = 0.0;
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if (r0 > 1.0) r0 = 1.0;
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rectangular_data.r0 = r0;
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}
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free(s);
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}
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static int
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rectangular_has_alpha(RGBA_Gradient *gr, int spread)
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{
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if (!gr || (gr->type.geometer != &rectangular)) return 0;
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if (gr->map.has_alpha)
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return 1;
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if (rectangular_data.r0 > 0.0)
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return 1;
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if (spread == _EVAS_TEXTURE_RESTRICT)
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return 1;
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return 0;
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}
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static int
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rectangular_get_map_len(RGBA_Gradient *gr, int spread)
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{
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int l;
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if (!gr || (gr->type.geometer != &rectangular)) return 0;
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l = rectangular_data.s;
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l -= (int)(l * rectangular_data.r0);
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return l;
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}
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static Gfx_Func_Gradient_Span
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rectangular_get_span_func(RGBA_Gradient *gr, int spread, unsigned char aa)
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{
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Gfx_Func_Gradient_Span sfunc = NULL;
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if (!gr || (gr->type.geometer != &rectangular)) return sfunc;
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switch (spread)
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{
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case _EVAS_TEXTURE_REFLECT:
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{
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if (aa)
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sfunc = rectangular_reflect_aa;
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else
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sfunc = rectangular_reflect;
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}
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break;
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case _EVAS_TEXTURE_REPEAT:
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{
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if (aa)
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sfunc = rectangular_repeat_aa;
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else
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sfunc = rectangular_repeat;
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}
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break;
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case _EVAS_TEXTURE_RESTRICT:
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{
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if (aa)
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sfunc = rectangular_restrict_aa;
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else
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sfunc = rectangular_restrict;
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}
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break;
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default:
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sfunc = rectangular_reflect;
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break;
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}
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return sfunc;
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}
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static void
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rectangular_reflect_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
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{
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DATA32 *dst_end = dst + dst_len;
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Rectangular_Data *gdata = (Rectangular_Data *)params_data;
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int xx, yy, rr0;
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if (gdata->sx != gdata->s)
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{
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axx = (gdata->s * axx) / gdata->sx;
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axy = (gdata->s * axy) / gdata->sx;
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}
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if (gdata->sy != gdata->s)
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{
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ayy = (gdata->s * ayy) / gdata->sy;
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ayx = (gdata->s * ayx) / gdata->sy;
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}
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xx = (axx * x) + (axy * y);
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yy = (ayx * x) + (ayy * y);
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rr0 = gdata->r0 * gdata->s;
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rr0 <<= 16;
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while (dst < dst_end)
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{
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int ll = xx, l = yy;
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if (ll < 0) ll = -ll;
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if (l < 0) l = -l;
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if (ll < l) ll = l;
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ll = ll - rr0; l = ll >> 16;
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*dst = 0;
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if (l == 0)
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{
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int a = 1 + (ll >> 8);
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*dst = map[0];
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A_VAL(dst) = (A_VAL(dst) * a) >> 8;
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}
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if (l > 0)
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{
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if (l >= map_len)
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{
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int m = (l % (2 * map_len));
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l = (l % map_len);
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if (m >= map_len)
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l = map_len - l - 1;
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}
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*dst = map[l];
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}
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dst++; xx += axx; yy += ayx;
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}
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}
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static void
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rectangular_reflect(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
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{
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DATA32 *dst_end = dst + dst_len;
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Rectangular_Data *gdata = (Rectangular_Data *)params_data;
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int xx, yy, rr0;
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if (gdata->sx != gdata->s)
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{
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axx = (gdata->s * axx) / gdata->sx;
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axy = (gdata->s * axy) / gdata->sx;
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}
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if (gdata->sy != gdata->s)
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{
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ayy = (gdata->s * ayy) / gdata->sy;
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ayx = (gdata->s * ayx) / gdata->sy;
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}
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xx = (axx * x) + (axy * y);
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yy = (ayx * x) + (ayy * y);
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rr0 = gdata->r0 * gdata->s;
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rr0 <<= 16;
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while (dst < dst_end)
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{
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int ll = xx, l = yy;
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if (ll < 0) ll = -ll;
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if (l < 0) l = -l;
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if (ll < l) ll = l;
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ll = ll - rr0; l = ll >> 16;
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l += (ll - (l << 16)) >> 15;
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*dst = 0;
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if (l >= 0)
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{
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if (l >= map_len)
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{
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int m = (l % (2 * map_len));
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l = (l % map_len);
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if (m >= map_len)
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l = map_len - l - 1;
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}
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*dst = map[l];
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}
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dst++; xx += axx; yy += ayx;
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}
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}
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static void
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rectangular_repeat_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
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{
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DATA32 *dst_end = dst + dst_len;
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Rectangular_Data *gdata = (Rectangular_Data *)params_data;
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int xx, yy, rr0;
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if (gdata->sx != gdata->s)
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{
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axx = (gdata->s * axx) / gdata->sx;
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axy = (gdata->s * axy) / gdata->sx;
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}
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if (gdata->sy != gdata->s)
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{
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ayy = (gdata->s * ayy) / gdata->sy;
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ayx = (gdata->s * ayx) / gdata->sy;
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}
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xx = (axx * x) + (axy * y);
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yy = (ayx * x) + (ayy * y);
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rr0 = gdata->r0 * gdata->s;
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rr0 <<= 16;
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while (dst < dst_end)
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{
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int ll = xx, l = yy;
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if (ll < 0) ll = -ll;
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if (l < 0) l = -l;
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if (ll < l) ll = l;
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ll = ll - rr0; l = ll >> 16;
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*dst = 0;
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if (l == 0)
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{
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int a = 1 + (ll >> 8);
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*dst = map[0];
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A_VAL(dst) = (A_VAL(dst) * a) >> 8;
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}
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if (l > 0)
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{
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if (l >= map_len)
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l = (l % map_len);
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*dst = map[l];
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if (l == 0)
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{
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int a = 256 - ((ll - ((ll >> 16) << 16)) >> 8);
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DATA32 *c = map + (map_len - 1);
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*dst += ARGB_JOIN((a * (A_VAL(c) - A_VAL(dst))) >> 8,
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(a * (R_VAL(c) - R_VAL(dst))) >> 8,
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(a * (G_VAL(c) - G_VAL(dst))) >> 8,
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(a * (B_VAL(c) - B_VAL(dst))) >> 8);
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}
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}
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dst++; xx += axx; yy += ayx;
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}
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}
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static void
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rectangular_repeat(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
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{
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DATA32 *dst_end = dst + dst_len;
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Rectangular_Data *gdata = (Rectangular_Data *)params_data;
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int xx, yy, rr0;
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if (gdata->sx != gdata->s)
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{
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axx = (gdata->s * axx) / gdata->sx;
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axy = (gdata->s * axy) / gdata->sx;
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}
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if (gdata->sy != gdata->s)
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{
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ayy = (gdata->s * ayy) / gdata->sy;
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ayx = (gdata->s * ayx) / gdata->sy;
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}
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xx = (axx * x) + (axy * y);
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yy = (ayx * x) + (ayy * y);
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rr0 = gdata->r0 * gdata->s;
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rr0 <<= 16;
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while (dst < dst_end)
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{
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int ll = xx, l = yy;
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if (ll < 0) ll = -ll;
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if (l < 0) l = -l;
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if (ll < l) ll = l;
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ll = ll - rr0; l = ll >> 16;
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l += (ll - (l << 16)) >> 15;
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*dst = 0;
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if (l >= 0)
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{
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if (l >= map_len)
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l = (l % map_len);
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*dst = map[l];
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}
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dst++; xx += axx; yy += ayx;
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}
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}
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static void
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rectangular_restrict_aa(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
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{
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DATA32 *dst_end = dst + dst_len;
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Rectangular_Data *gdata = (Rectangular_Data *)params_data;
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int xx, yy, rr0;
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if (gdata->sx != gdata->s)
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{
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axx = (gdata->s * axx) / gdata->sx;
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axy = (gdata->s * axy) / gdata->sx;
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}
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if (gdata->sy != gdata->s)
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{
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ayy = (gdata->s * ayy) / gdata->sy;
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ayx = (gdata->s * ayx) / gdata->sy;
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}
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xx = (axx * x) + (axy * y);
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yy = (ayx * x) + (ayy * y);
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rr0 = gdata->r0 * gdata->s;
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rr0 <<= 16;
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while (dst < dst_end)
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{
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int ll = xx, l = yy;
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if (ll < 0) ll = -ll;
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if (l < 0) l = -l;
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if (ll < l) ll = l;
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ll = ll - rr0; l = ll >> 16;
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*dst = 0;
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if ((unsigned)l < map_len)
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{
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*dst = map[l];
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if (l == (map_len - 1))
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{
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int a = 256 - ((ll - (l << 16)) >> 8);
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A_VAL(dst) = (A_VAL(dst) * a) >> 8;
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}
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if ((l == 0) && rr0)
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{
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int a = 1 + (ll >> 8);
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A_VAL(dst) = (A_VAL(dst) * a) >> 8;
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}
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}
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dst++; xx += axx; yy += ayx;
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}
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}
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static void
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rectangular_restrict(DATA32 *map, int map_len, DATA32 *dst, int dst_len,
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int x, int y, int axx, int axy, int ayx, int ayy, void *params_data)
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{
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DATA32 *dst_end = dst + dst_len;
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Rectangular_Data *gdata = (Rectangular_Data *)params_data;
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int xx, yy, rr0;
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if (gdata->sx != gdata->s)
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{
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axx = (gdata->s * axx) / gdata->sx;
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axy = (gdata->s * axy) / gdata->sx;
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}
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if (gdata->sy != gdata->s)
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{
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ayy = (gdata->s * ayy) / gdata->sy;
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ayx = (gdata->s * ayx) / gdata->sy;
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}
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xx = (axx * x) + (axy * y);
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yy = (ayx * x) + (ayy * y);
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rr0 = gdata->r0 * gdata->s;
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rr0 <<= 16;
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while (dst < dst_end)
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{
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int ll = xx, l = yy;
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if (ll < 0) ll = -ll;
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if (l < 0) l = -l;
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if (ll < l) ll = l;
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ll = ll - rr0; l = ll >> 16;
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l += (ll - (l << 16)) >> 15;
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*dst = 0;
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if ((unsigned)l < map_len)
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*dst = map[l];
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dst++; xx += axx; yy += ayx;
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}
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}
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