Enlightenment CVS committal
Author : sebastid
Project : e17
Module : libs/evas
Dir : e17/libs/evas/src/lib/engines/common
Modified Files:
evas_line_main.c
Log Message:
\r\n -> \n
===================================================================
RCS file: /cvs/e/e17/libs/evas/src/lib/engines/common/evas_line_main.c,v
retrieving revision 1.15
retrieving revision 1.16
diff -u -3 -r1.15 -r1.16
--- evas_line_main.c 16 May 2006 08:52:05 -0000 1.15
+++ evas_line_main.c 8 Jun 2006 08:11:19 -0000 1.16
@@ -1,634 +1,634 @@
-#include "evas_common.h"
-
-
-static void
-_evas_draw_point(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y);
-
-static void
-_evas_draw_simple_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0,
int x1, int y1);
-
-static void
-_evas_draw_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1);
-
-static void
-_evas_draw_line_aa(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1);
-
-
-#define IN_RANGE(x, y, w, h) \
-( ((unsigned)(x) < (w)) && ((unsigned)(y) < (h)) )
-
-#define IN_RECT(x, y, rx, ry, rw, rh) \
-( ((unsigned)((x) - (rx)) < (rw)) && ((unsigned)((y) - (ry)) < (rh)) )
-
-#define EXCHANGE_POINTS(x0, y0, x1, y1) \
-{ \
- int _tmp = y0; \
- \
- y0 = y1; \
- y1 = _tmp; \
- \
- _tmp = x0; \
- x0 = x1; \
- x1 = _tmp; \
-}
-
-
-void
-evas_common_line_init(void)
-{
-}
-
-void
-evas_common_line_draw(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0,
int x1, int y1)
-{
- int x, y, w, h;
- int clx, cly, clw, clh;
- int cuse, cx, cy, cw, ch;
-
- if ((x0 == x1) && (y0 == y1))
- {
- _evas_draw_point(dst, dc, x0, y0);
- return;
- }
-
- clx = cly = 0;
- clw = dst->image->w;
- clh = dst->image->h;
-
- /* save out clip info */
- cuse = dc->clip.use;
- cx = dc->clip.x;
- cy = dc->clip.y;
- cw = dc->clip.w;
- ch = dc->clip.h;
-
- if (cuse)
- {
- RECTS_CLIP_TO_RECT(clx, cly, clw, clh, cx, cy, cw, ch);
- if ((clw < 1) || (clh < 1))
- return;
- }
-
- x = MIN(x0, x1);
- y = MIN(y0, y1);
- w = MAX(x0, x1) - x + 1;
- h = MAX(y0, y1) - y + 1;
-
- RECTS_CLIP_TO_RECT(clx, cly, clw, clh, x, y, w, h);
- if ((clw < 1) || (clh < 1))
- return;
-
- dc->clip.use = 1;
- dc->clip.x = clx;
- dc->clip.y = cly;
- dc->clip.w = clw;
- dc->clip.h = clh;
-
- if (dc->anti_alias)
- _evas_draw_line_aa(dst, dc, x0, y0, x1, y1);
- else
- _evas_draw_line(dst, dc, x0, y0, x1, y1);
-
- /* restore clip info */
- dc->clip.use = cuse;
- dc->clip.x = cx;
- dc->clip.y = cy;
- dc->clip.w = cw;
- dc->clip.h = ch;
- evas_common_cpu_end_opt();
-}
-
-
-static void
-_evas_draw_point(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y)
-{
- RGBA_Gfx_Pt_Func pfunc;
-
- if (!IN_RANGE(x, y, dst->image->w, dst->image->h))
- return;
- if ((dc->clip.use) && (!IN_RECT(x, y, dc->clip.x, dc->clip.y, dc->clip.w,
dc->clip.h)))
- return;
- pfunc = evas_common_gfx_func_composite_color_pt_get(dc->col.col, dst,
dc->render_op);
- if (pfunc)
- pfunc(0, 255, dc->col.col, dst->image->data + (dst->image->w * y) + x);
-}
-
-/*
- these functions use the dc->clip data as bounding
- data. they assume that such data has already been cut
- back to lie in the dst image rect and the object's
- (line) bounding rect.
-*/
-static void
-_evas_draw_simple_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0,
int x1, int y1)
-{
- int dx, dy, len, lx, ty, rx, by;
- int clx, cly, clw, clh;
- int dstw;
- DATA32 *p, color;
- RGBA_Gfx_Pt_Func pfunc;
- RGBA_Gfx_Func sfunc;
-
- dstw = dst->image->w;
- color = dc->col.col;
-
- if (y0 > y1)
- EXCHANGE_POINTS(x0, y0, x1, y1)
- if (x0 > x1)
- EXCHANGE_POINTS(x0, y0, x1, y1)
-
- dx = x1 - x0;
- dy = y1 - y0;
-
- clx = dc->clip.x;
- cly = dc->clip.y;
- clw = dc->clip.w;
- clh = dc->clip.h;
-
- lx = clx;
- rx = clx + clw - 1;
- ty = cly;
- by = cly + clh - 1;
-
- if (dy == 0)
- {
- if ((y0 >= ty) && (y0 <= by))
- {
- if (dx < 0)
- {
- int tmp = x1;
-
- x1 = x0;
- x0 = tmp;
- }
-
- if (x0 < lx) x0 = lx;
- if (x1 > rx) x1 = rx;
-
- len = x1 - x0 + 1;
- p = dst->image->data + (dstw * y0) + x0;
- sfunc = evas_common_gfx_func_composite_color_span_get(color, dst,
len, dc->render_op);
- if (sfunc)
- sfunc(NULL, NULL, color, p, len);
- }
- return;
- }
-
- pfunc = evas_common_gfx_func_composite_color_pt_get(color, dst,
dc->render_op);
- if (!pfunc) return;
-
- if (dx == 0)
- {
- if ((x0 >= lx) && (x0 <= rx))
- {
- if (y0 < ty) y0 = ty;
- if (y1 > by) y1 = by;
-
- len = y1 - y0 + 1;
- p = dst->image->data + (dstw * y0) + x0;
- while (len--)
- {
- pfunc(0, 255, color, p);
- p += dstw;
- }
- }
- return;
- }
-
- if ((dy == dx) || (dy == -dx))
- {
- int p0_in, p1_in;
-
- p0_in = (IN_RECT(x0, y0, clx, cly, clw, clh) ? 1 : 0);
- p1_in = (IN_RECT(x1, y1, clx, cly, clw, clh) ? 1 : 0);
-
- if (dx > 0)
- {
- if (!p0_in)
- {
- x0 = x0 + (ty - y0);
- y0 = ty;
- if (x0 > rx) return;
- if (x0 < lx)
- {
- y0 = y0 + (lx - x0);
- x0 = lx;
- if ((y0 < ty) || (y0 > by)) return;
- }
- }
- if (!p1_in)
- {
- x1 = x0 + (by - y0);
- y1 = by;
- if (x1 < lx) return;
- if (x1 > rx)
- {
- y1 = y0 + (rx - x0);
- x1 = rx;
- if ((y1 < ty) || (y1 > by)) return;
- }
- }
- }
- else
- {
- if (!p0_in)
- {
- x0 = x0 - (ty - y0);
- y0 = ty;
- if (x0 < lx) return;
- if (x0 > rx)
- {
- y0 = y0 - (rx - x0);
- x0 = rx;
- if ((y0 < ty) || (y0 > by)) return;
- }
- }
- if (!p1_in)
- {
- x1 = x0 - (by - y0);
- y1 = by;
- if (x1 > rx) return;
- if (x1 < lx)
- {
- y1 = y0 - (lx - x0);
- x1 = lx;
- if ((y1 < ty) || (y1 > by)) return;
- }
- }
- }
- if (y1 > y0)
- {
- p = dst->image->data + (dstw * y0) + x0;
- len = y1 - y0 + 1;
- if (dx > 0) dstw++;
- else dstw--;
- }
- else
- {
- len = y0 - y1 + 1;
- p = dst->image->data + (dstw * y1) + x1;
- if (dx > 0) dstw--;
- else dstw++;
- }
-
- while (len--)
- {
- pfunc(0, 255, color, p);
- p += dstw;
- }
- }
-}
-
-
-#define SETUP_LINE_SHALLOW \
- if (x0 > x1) \
- {
\
- EXCHANGE_POINTS(x0, y0, x1, y1) \
- dx = -dx; \
- dy = -dy; \
- }
\
-
\
- px = x0;
\
- py = y0;
\
-
\
- p0_in = (IN_RANGE(x0 , y0 , clw, clh) ? 1 : 0); \
- p1_in = (IN_RANGE(x1 , y1 , clw, clh) ? 1 : 0); \
-
\
- dely = 1;
\
- dh = dstw;
\
- if (dy < 0)
\
- {
\
- dely = -1; \
- dh = -dstw; \
- }
\
-
\
- dyy = ((dy) << 16) / (dx);
\
-
\
- if (!p0_in)
\
- {
\
- dxx = ((dx) << 16) / (dy); \
- if (px < 0) \
- { \
- x = -px; px = 0;
\
- yy = x * dyy; \
- y = yy >> 16; \
- if (!a_a)
\
- y += (yy - (y << 16)) >> 15; \
- py += y;
\
- if ((dely > 0) && (py >= clh)) \
- return;
\
- else if ((dely < 0) && (py < -1)) \
- return;
\
- } \
-
\
- y = 0;
\
- if ((dely > 0) && (py < -1)) \
- y = (-1 - py); \
- else if ((dely < 0) && (py >= clh)) \
- y = (clh - 1 - py); \
-
\
- xx = y * dxx;
\
- x = xx >> 16;
\
- if (!a_a) \
- x += (xx - (x << 16)) >> 15; \
- px += x;
\
- if (px >= clw) return; \
-
\
- yy = x * dyy;
\
- y = yy >> 16;
\
- if (!a_a) \
- y += (yy - (y << 16)) >> 15; \
- py += y;
\
- if ((dely > 0) && (py >= clh)) \
- return;
\
- else if ((dely < 0) && (py < -1)) \
- return;
\
- }
\
-
\
- p = data + (dstw * py) + px; \
-
\
- x = px - x0; \
- yy = x * dyy; \
- prev_y = (yy >> 16); \
-
\
- rx = MIN(x1 + 1, clw); \
- by = clh - 1;
-
-
-#define SETUP_LINE_STEEP \
- if (y0 > y1)
\
- { \
- EXCHANGE_POINTS(x0, y0, x1, y1) \
- dx = -dx;
\
- dy = -dy;
\
- } \
-
\
- px = x0;
\
- py = y0;
\
-
\
- p0_in = (IN_RANGE(x0 , y0 , clw, clh) ? 1 : 0); \
- p1_in = (IN_RANGE(x1 , y1 , clw, clh) ? 1 : 0); \
-
\
- delx = 1; \
- if (dx < 0) \
- delx = -1;
\
-
\
- dxx = ((dx) << 16) / (dy); \
-
\
- if (!p0_in) \
- { \
- dyy = ((dy) << 16) / (dx);
\
-
\
- if (py < 0)
\
- {
\
- y = -py; py = 0; \
- xx = y * dxx;
\
- x = xx >> 16;
\
- if (!a_a) \
- x += (xx - (x << 16)) >> 15; \
- px += x;
\
- if ((delx > 0) && (px >= clw)) \
- return; \
- else if ((delx < 0) && (px < -1)) \
- return; \
- }
\
-
\
- x = 0; \
- if ((delx > 0) && (px < -1)) \
- x = (-1 - px);
\
- else if ((delx < 0) && (px >= clw)) \
- x = (clw - 1 - px); \
-
\
- yy = x * dyy; \
- y = yy >> 16; \
- if (!a_a)
\
- y += (yy - (y << 16)) >> 15; \
- py += y;
\
- if (py >= clh) return; \
-
\
- xx = y * dxx; \
- x = xx >> 16; \
- if (!a_a)
\
- x += (xx - (x << 16)) >> 15; \
- px += x;
\
- if ((delx > 0) && (px >= clw)) \
- return;
\
- else if ((delx < 0) && (px < -1)) \
- return;
\
- } \
-
\
- p = data + (dstw * py) + px; \
-
\
- y = py - y0;
\
- xx = y * dxx;
\
- prev_x = (xx >> 16);
\
-
\
- by = MIN(y1 + 1, clh); \
- rx = clw - 1;
-
-
-
-static void
-_evas_draw_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1)
-{
- int px, py, x, y, prev_x, prev_y;
- int dx, dy, rx, by, p0_in, p1_in, dh, a_a = 0;
- int delx, dely, xx, yy, dxx, dyy;
- int clx, cly, clw, clh;
- int dstw;
- DATA32 *p, *data, color;
- RGBA_Gfx_Pt_Func pfunc;
-
- dx = x1 - x0;
- dy = y1 - y0;
-
- if ( (dx == 0) || (dy == 0) || (dx == dy) || (dx == -dy) )
- {
- _evas_draw_simple_line(dst, dc, x0, y0, x1, y1);
- return;
- }
-
- color = dc->col.col;
- pfunc = evas_common_gfx_func_composite_color_pt_get(color, dst,
dc->render_op);
- if (!pfunc) return;
-
- clx = dc->clip.x;
- cly = dc->clip.y;
- clw = dc->clip.w;
- clh = dc->clip.h;
-
- data = dst->image->data;
- dstw = dst->image->w;
-
- data += (dstw * cly) + clx;
- x0 -= clx;
- y0 -= cly;
- x1 -= clx;
- y1 -= cly;
-
- /* shallow: x-parametric */
- if ((dy < dx) || (dy < -dx))
- {
- SETUP_LINE_SHALLOW
-
- while (px < rx)
- {
- y = (yy >> 16);
- y += ((yy - (y << 16)) >> 15);
- if (prev_y != y)
- {
- prev_y = y;
- p += dh;
- py += dely;
- }
- if (!p1_in)
- {
- if ((py < 0) && (dely < 0)) return;
- if ((py > by) && (dely > 0)) return;
- }
- if (IN_RANGE(px, py, clw, clh))
- pfunc(0, 255, color, p);
- yy += dyy;
- px++;
- p++;
- }
- return;
- }
-
- /* steep: y-parametric */
-
- SETUP_LINE_STEEP
-
- while (py < by)
- {
- x = (xx >> 16);
- x += ((xx - (x << 16)) >> 15);
- if (prev_x != x)
- {
- prev_x = x;
- px += delx;
- p += delx;
- }
- if (!p1_in)
- {
- if ((px < 0) && (delx < 0)) return;
- if ((px > rx) && (delx > 0)) return;
- }
- if (IN_RANGE(px, py, clw, clh))
- pfunc(0, 255, color, p);
- xx += dxx;
- py++;
- p += dstw;
- }
-}
-
-
-static void
-_evas_draw_line_aa(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1)
-{
- int px, py, x, y, prev_x, prev_y;
- int dx, dy, rx, by, p0_in, p1_in, dh, a_a = 1;
- int delx, dely, xx, yy, dxx, dyy;
- int clx, cly, clw, clh;
- int dstw;
- DATA32 *p, *data, color;
- RGBA_Gfx_Pt_Func pfunc;
-
- if (y0 > y1)
- EXCHANGE_POINTS(x0, y0, x1, y1)
- dx = x1 - x0;
- dy = y1 - y0;
-
- if ( (dx == 0) || (dy == 0) || (dx == dy) || (dx == -dy) )
- {
- _evas_draw_simple_line(dst, dc, x0, y0, x1, y1);
- return;
- }
-
- color = dc->col.col;
- pfunc = evas_common_gfx_func_composite_mask_color_pt_get(color, dst,
dc->render_op);
- if (!pfunc) return;
-
- clx = dc->clip.x;
- cly = dc->clip.y;
- clw = dc->clip.w;
- clh = dc->clip.h;
-
- data = dst->image->data;
- dstw = dst->image->w;
-
- data += (dstw * cly) + clx;
- x0 -= clx;
- y0 -= cly;
- x1 -= clx;
- y1 -= cly;
-
- /* shallow: x-parametric */
- if ((dy < dx) || (dy < -dx))
- {
- SETUP_LINE_SHALLOW
-
- while (px < rx)
- {
- DATA8 aa;
-
- y = (yy >> 16);
- if (prev_y != y)
- {
- prev_y = y;
- p += dh;
- py += dely;
- }
- if (!p1_in)
- {
- if ((py < -1) && (dely < 0)) return;
- if ((py > by) && (dely > 0)) return;
- }
- if ((unsigned)(px) < clw)
- {
- aa = ((yy - (y << 16)) >> 8);
- if ((unsigned)(py) < clh)
- pfunc(0, 255 - aa, color, p);
- if ((unsigned)(py + 1) < clh)
- pfunc(0, aa, color, p + dstw);
- }
- yy += dyy;
- px++;
- p++;
- }
- return;
- }
-
- /* steep: y-parametric */
-
- SETUP_LINE_STEEP
-
- while (py < by)
- {
- DATA8 aa;
-
- x = (xx >> 16);
- if (prev_x != x)
- {
- prev_x = x;
- px += delx;
- p += delx;
- }
- if (!p1_in)
- {
- if ((px < -1) && (delx < 0)) return;
- if ((px > rx) && (delx > 0)) return;
- }
- if ((unsigned)(py) < clh)
- {
- aa = ((xx - (x << 16)) >> 8);
- if ((unsigned)(px) < clw)
- pfunc(0, 255 - aa, color, p);
- if ((unsigned)(px + 1) < clw)
- pfunc(0, aa, color, p + 1);
- }
- xx += dxx;
- py++;
- p += dstw;
- }
-}
+#include "evas_common.h"
+
+
+static void
+_evas_draw_point(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y);
+
+static void
+_evas_draw_simple_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0,
int x1, int y1);
+
+static void
+_evas_draw_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1);
+
+static void
+_evas_draw_line_aa(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1);
+
+
+#define IN_RANGE(x, y, w, h) \
+( ((unsigned)(x) < (w)) && ((unsigned)(y) < (h)) )
+
+#define IN_RECT(x, y, rx, ry, rw, rh) \
+( ((unsigned)((x) - (rx)) < (rw)) && ((unsigned)((y) - (ry)) < (rh)) )
+
+#define EXCHANGE_POINTS(x0, y0, x1, y1) \
+{ \
+ int _tmp = y0; \
+ \
+ y0 = y1; \
+ y1 = _tmp; \
+ \
+ _tmp = x0; \
+ x0 = x1; \
+ x1 = _tmp; \
+}
+
+
+void
+evas_common_line_init(void)
+{
+}
+
+void
+evas_common_line_draw(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0,
int x1, int y1)
+{
+ int x, y, w, h;
+ int clx, cly, clw, clh;
+ int cuse, cx, cy, cw, ch;
+
+ if ((x0 == x1) && (y0 == y1))
+ {
+ _evas_draw_point(dst, dc, x0, y0);
+ return;
+ }
+
+ clx = cly = 0;
+ clw = dst->image->w;
+ clh = dst->image->h;
+
+ /* save out clip info */
+ cuse = dc->clip.use;
+ cx = dc->clip.x;
+ cy = dc->clip.y;
+ cw = dc->clip.w;
+ ch = dc->clip.h;
+
+ if (cuse)
+ {
+ RECTS_CLIP_TO_RECT(clx, cly, clw, clh, cx, cy, cw, ch);
+ if ((clw < 1) || (clh < 1))
+ return;
+ }
+
+ x = MIN(x0, x1);
+ y = MIN(y0, y1);
+ w = MAX(x0, x1) - x + 1;
+ h = MAX(y0, y1) - y + 1;
+
+ RECTS_CLIP_TO_RECT(clx, cly, clw, clh, x, y, w, h);
+ if ((clw < 1) || (clh < 1))
+ return;
+
+ dc->clip.use = 1;
+ dc->clip.x = clx;
+ dc->clip.y = cly;
+ dc->clip.w = clw;
+ dc->clip.h = clh;
+
+ if (dc->anti_alias)
+ _evas_draw_line_aa(dst, dc, x0, y0, x1, y1);
+ else
+ _evas_draw_line(dst, dc, x0, y0, x1, y1);
+
+ /* restore clip info */
+ dc->clip.use = cuse;
+ dc->clip.x = cx;
+ dc->clip.y = cy;
+ dc->clip.w = cw;
+ dc->clip.h = ch;
+ evas_common_cpu_end_opt();
+}
+
+
+static void
+_evas_draw_point(RGBA_Image *dst, RGBA_Draw_Context *dc, int x, int y)
+{
+ RGBA_Gfx_Pt_Func pfunc;
+
+ if (!IN_RANGE(x, y, dst->image->w, dst->image->h))
+ return;
+ if ((dc->clip.use) && (!IN_RECT(x, y, dc->clip.x, dc->clip.y, dc->clip.w,
dc->clip.h)))
+ return;
+ pfunc = evas_common_gfx_func_composite_color_pt_get(dc->col.col, dst,
dc->render_op);
+ if (pfunc)
+ pfunc(0, 255, dc->col.col, dst->image->data + (dst->image->w * y) + x);
+}
+
+/*
+ these functions use the dc->clip data as bounding
+ data. they assume that such data has already been cut
+ back to lie in the dst image rect and the object's
+ (line) bounding rect.
+*/
+static void
+_evas_draw_simple_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0,
int x1, int y1)
+{
+ int dx, dy, len, lx, ty, rx, by;
+ int clx, cly, clw, clh;
+ int dstw;
+ DATA32 *p, color;
+ RGBA_Gfx_Pt_Func pfunc;
+ RGBA_Gfx_Func sfunc;
+
+ dstw = dst->image->w;
+ color = dc->col.col;
+
+ if (y0 > y1)
+ EXCHANGE_POINTS(x0, y0, x1, y1)
+ if (x0 > x1)
+ EXCHANGE_POINTS(x0, y0, x1, y1)
+
+ dx = x1 - x0;
+ dy = y1 - y0;
+
+ clx = dc->clip.x;
+ cly = dc->clip.y;
+ clw = dc->clip.w;
+ clh = dc->clip.h;
+
+ lx = clx;
+ rx = clx + clw - 1;
+ ty = cly;
+ by = cly + clh - 1;
+
+ if (dy == 0)
+ {
+ if ((y0 >= ty) && (y0 <= by))
+ {
+ if (dx < 0)
+ {
+ int tmp = x1;
+
+ x1 = x0;
+ x0 = tmp;
+ }
+
+ if (x0 < lx) x0 = lx;
+ if (x1 > rx) x1 = rx;
+
+ len = x1 - x0 + 1;
+ p = dst->image->data + (dstw * y0) + x0;
+ sfunc = evas_common_gfx_func_composite_color_span_get(color, dst,
len, dc->render_op);
+ if (sfunc)
+ sfunc(NULL, NULL, color, p, len);
+ }
+ return;
+ }
+
+ pfunc = evas_common_gfx_func_composite_color_pt_get(color, dst,
dc->render_op);
+ if (!pfunc) return;
+
+ if (dx == 0)
+ {
+ if ((x0 >= lx) && (x0 <= rx))
+ {
+ if (y0 < ty) y0 = ty;
+ if (y1 > by) y1 = by;
+
+ len = y1 - y0 + 1;
+ p = dst->image->data + (dstw * y0) + x0;
+ while (len--)
+ {
+ pfunc(0, 255, color, p);
+ p += dstw;
+ }
+ }
+ return;
+ }
+
+ if ((dy == dx) || (dy == -dx))
+ {
+ int p0_in, p1_in;
+
+ p0_in = (IN_RECT(x0, y0, clx, cly, clw, clh) ? 1 : 0);
+ p1_in = (IN_RECT(x1, y1, clx, cly, clw, clh) ? 1 : 0);
+
+ if (dx > 0)
+ {
+ if (!p0_in)
+ {
+ x0 = x0 + (ty - y0);
+ y0 = ty;
+ if (x0 > rx) return;
+ if (x0 < lx)
+ {
+ y0 = y0 + (lx - x0);
+ x0 = lx;
+ if ((y0 < ty) || (y0 > by)) return;
+ }
+ }
+ if (!p1_in)
+ {
+ x1 = x0 + (by - y0);
+ y1 = by;
+ if (x1 < lx) return;
+ if (x1 > rx)
+ {
+ y1 = y0 + (rx - x0);
+ x1 = rx;
+ if ((y1 < ty) || (y1 > by)) return;
+ }
+ }
+ }
+ else
+ {
+ if (!p0_in)
+ {
+ x0 = x0 - (ty - y0);
+ y0 = ty;
+ if (x0 < lx) return;
+ if (x0 > rx)
+ {
+ y0 = y0 - (rx - x0);
+ x0 = rx;
+ if ((y0 < ty) || (y0 > by)) return;
+ }
+ }
+ if (!p1_in)
+ {
+ x1 = x0 - (by - y0);
+ y1 = by;
+ if (x1 > rx) return;
+ if (x1 < lx)
+ {
+ y1 = y0 - (lx - x0);
+ x1 = lx;
+ if ((y1 < ty) || (y1 > by)) return;
+ }
+ }
+ }
+ if (y1 > y0)
+ {
+ p = dst->image->data + (dstw * y0) + x0;
+ len = y1 - y0 + 1;
+ if (dx > 0) dstw++;
+ else dstw--;
+ }
+ else
+ {
+ len = y0 - y1 + 1;
+ p = dst->image->data + (dstw * y1) + x1;
+ if (dx > 0) dstw--;
+ else dstw++;
+ }
+
+ while (len--)
+ {
+ pfunc(0, 255, color, p);
+ p += dstw;
+ }
+ }
+}
+
+
+#define SETUP_LINE_SHALLOW \
+ if (x0 > x1) \
+ {
\
+ EXCHANGE_POINTS(x0, y0, x1, y1) \
+ dx = -dx; \
+ dy = -dy; \
+ }
\
+
\
+ px = x0;
\
+ py = y0;
\
+
\
+ p0_in = (IN_RANGE(x0 , y0 , clw, clh) ? 1 : 0); \
+ p1_in = (IN_RANGE(x1 , y1 , clw, clh) ? 1 : 0); \
+
\
+ dely = 1;
\
+ dh = dstw;
\
+ if (dy < 0)
\
+ {
\
+ dely = -1; \
+ dh = -dstw; \
+ }
\
+
\
+ dyy = ((dy) << 16) / (dx);
\
+
\
+ if (!p0_in)
\
+ {
\
+ dxx = ((dx) << 16) / (dy); \
+ if (px < 0) \
+ { \
+ x = -px; px = 0;
\
+ yy = x * dyy; \
+ y = yy >> 16; \
+ if (!a_a)
\
+ y += (yy - (y << 16)) >> 15; \
+ py += y;
\
+ if ((dely > 0) && (py >= clh)) \
+ return;
\
+ else if ((dely < 0) && (py < -1)) \
+ return;
\
+ } \
+
\
+ y = 0;
\
+ if ((dely > 0) && (py < -1)) \
+ y = (-1 - py); \
+ else if ((dely < 0) && (py >= clh)) \
+ y = (clh - 1 - py); \
+
\
+ xx = y * dxx;
\
+ x = xx >> 16;
\
+ if (!a_a) \
+ x += (xx - (x << 16)) >> 15; \
+ px += x;
\
+ if (px >= clw) return; \
+
\
+ yy = x * dyy;
\
+ y = yy >> 16;
\
+ if (!a_a) \
+ y += (yy - (y << 16)) >> 15; \
+ py += y;
\
+ if ((dely > 0) && (py >= clh)) \
+ return;
\
+ else if ((dely < 0) && (py < -1)) \
+ return;
\
+ }
\
+
\
+ p = data + (dstw * py) + px; \
+
\
+ x = px - x0; \
+ yy = x * dyy; \
+ prev_y = (yy >> 16); \
+
\
+ rx = MIN(x1 + 1, clw); \
+ by = clh - 1;
+
+
+#define SETUP_LINE_STEEP \
+ if (y0 > y1)
\
+ { \
+ EXCHANGE_POINTS(x0, y0, x1, y1) \
+ dx = -dx;
\
+ dy = -dy;
\
+ } \
+
\
+ px = x0;
\
+ py = y0;
\
+
\
+ p0_in = (IN_RANGE(x0 , y0 , clw, clh) ? 1 : 0); \
+ p1_in = (IN_RANGE(x1 , y1 , clw, clh) ? 1 : 0); \
+
\
+ delx = 1; \
+ if (dx < 0) \
+ delx = -1;
\
+
\
+ dxx = ((dx) << 16) / (dy); \
+
\
+ if (!p0_in) \
+ { \
+ dyy = ((dy) << 16) / (dx);
\
+
\
+ if (py < 0)
\
+ {
\
+ y = -py; py = 0; \
+ xx = y * dxx;
\
+ x = xx >> 16;
\
+ if (!a_a) \
+ x += (xx - (x << 16)) >> 15; \
+ px += x;
\
+ if ((delx > 0) && (px >= clw)) \
+ return; \
+ else if ((delx < 0) && (px < -1)) \
+ return; \
+ }
\
+
\
+ x = 0; \
+ if ((delx > 0) && (px < -1)) \
+ x = (-1 - px);
\
+ else if ((delx < 0) && (px >= clw)) \
+ x = (clw - 1 - px); \
+
\
+ yy = x * dyy; \
+ y = yy >> 16; \
+ if (!a_a)
\
+ y += (yy - (y << 16)) >> 15; \
+ py += y;
\
+ if (py >= clh) return; \
+
\
+ xx = y * dxx; \
+ x = xx >> 16; \
+ if (!a_a)
\
+ x += (xx - (x << 16)) >> 15; \
+ px += x;
\
+ if ((delx > 0) && (px >= clw)) \
+ return;
\
+ else if ((delx < 0) && (px < -1)) \
+ return;
\
+ } \
+
\
+ p = data + (dstw * py) + px; \
+
\
+ y = py - y0;
\
+ xx = y * dxx;
\
+ prev_x = (xx >> 16);
\
+
\
+ by = MIN(y1 + 1, clh); \
+ rx = clw - 1;
+
+
+
+static void
+_evas_draw_line(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1)
+{
+ int px, py, x, y, prev_x, prev_y;
+ int dx, dy, rx, by, p0_in, p1_in, dh, a_a = 0;
+ int delx, dely, xx, yy, dxx, dyy;
+ int clx, cly, clw, clh;
+ int dstw;
+ DATA32 *p, *data, color;
+ RGBA_Gfx_Pt_Func pfunc;
+
+ dx = x1 - x0;
+ dy = y1 - y0;
+
+ if ( (dx == 0) || (dy == 0) || (dx == dy) || (dx == -dy) )
+ {
+ _evas_draw_simple_line(dst, dc, x0, y0, x1, y1);
+ return;
+ }
+
+ color = dc->col.col;
+ pfunc = evas_common_gfx_func_composite_color_pt_get(color, dst,
dc->render_op);
+ if (!pfunc) return;
+
+ clx = dc->clip.x;
+ cly = dc->clip.y;
+ clw = dc->clip.w;
+ clh = dc->clip.h;
+
+ data = dst->image->data;
+ dstw = dst->image->w;
+
+ data += (dstw * cly) + clx;
+ x0 -= clx;
+ y0 -= cly;
+ x1 -= clx;
+ y1 -= cly;
+
+ /* shallow: x-parametric */
+ if ((dy < dx) || (dy < -dx))
+ {
+ SETUP_LINE_SHALLOW
+
+ while (px < rx)
+ {
+ y = (yy >> 16);
+ y += ((yy - (y << 16)) >> 15);
+ if (prev_y != y)
+ {
+ prev_y = y;
+ p += dh;
+ py += dely;
+ }
+ if (!p1_in)
+ {
+ if ((py < 0) && (dely < 0)) return;
+ if ((py > by) && (dely > 0)) return;
+ }
+ if (IN_RANGE(px, py, clw, clh))
+ pfunc(0, 255, color, p);
+ yy += dyy;
+ px++;
+ p++;
+ }
+ return;
+ }
+
+ /* steep: y-parametric */
+
+ SETUP_LINE_STEEP
+
+ while (py < by)
+ {
+ x = (xx >> 16);
+ x += ((xx - (x << 16)) >> 15);
+ if (prev_x != x)
+ {
+ prev_x = x;
+ px += delx;
+ p += delx;
+ }
+ if (!p1_in)
+ {
+ if ((px < 0) && (delx < 0)) return;
+ if ((px > rx) && (delx > 0)) return;
+ }
+ if (IN_RANGE(px, py, clw, clh))
+ pfunc(0, 255, color, p);
+ xx += dxx;
+ py++;
+ p += dstw;
+ }
+}
+
+
+static void
+_evas_draw_line_aa(RGBA_Image *dst, RGBA_Draw_Context *dc, int x0, int y0, int
x1, int y1)
+{
+ int px, py, x, y, prev_x, prev_y;
+ int dx, dy, rx, by, p0_in, p1_in, dh, a_a = 1;
+ int delx, dely, xx, yy, dxx, dyy;
+ int clx, cly, clw, clh;
+ int dstw;
+ DATA32 *p, *data, color;
+ RGBA_Gfx_Pt_Func pfunc;
+
+ if (y0 > y1)
+ EXCHANGE_POINTS(x0, y0, x1, y1)
+ dx = x1 - x0;
+ dy = y1 - y0;
+
+ if ( (dx == 0) || (dy == 0) || (dx == dy) || (dx == -dy) )
+ {
+ _evas_draw_simple_line(dst, dc, x0, y0, x1, y1);
+ return;
+ }
+
+ color = dc->col.col;
+ pfunc = evas_common_gfx_func_composite_mask_color_pt_get(color, dst,
dc->render_op);
+ if (!pfunc) return;
+
+ clx = dc->clip.x;
+ cly = dc->clip.y;
+ clw = dc->clip.w;
+ clh = dc->clip.h;
+
+ data = dst->image->data;
+ dstw = dst->image->w;
+
+ data += (dstw * cly) + clx;
+ x0 -= clx;
+ y0 -= cly;
+ x1 -= clx;
+ y1 -= cly;
+
+ /* shallow: x-parametric */
+ if ((dy < dx) || (dy < -dx))
+ {
+ SETUP_LINE_SHALLOW
+
+ while (px < rx)
+ {
+ DATA8 aa;
+
+ y = (yy >> 16);
+ if (prev_y != y)
+ {
+ prev_y = y;
+ p += dh;
+ py += dely;
+ }
+ if (!p1_in)
+ {
+ if ((py < -1) && (dely < 0)) return;
+ if ((py > by) && (dely > 0)) return;
+ }
+ if ((unsigned)(px) < clw)
+ {
+ aa = ((yy - (y << 16)) >> 8);
+ if ((unsigned)(py) < clh)
+ pfunc(0, 255 - aa, color, p);
+ if ((unsigned)(py + 1) < clh)
+ pfunc(0, aa, color, p + dstw);
+ }
+ yy += dyy;
+ px++;
+ p++;
+ }
+ return;
+ }
+
+ /* steep: y-parametric */
+
+ SETUP_LINE_STEEP
+
+ while (py < by)
+ {
+ DATA8 aa;
+
+ x = (xx >> 16);
+ if (prev_x != x)
+ {
+ prev_x = x;
+ px += delx;
+ p += delx;
+ }
+ if (!p1_in)
+ {
+ if ((px < -1) && (delx < 0)) return;
+ if ((px > rx) && (delx > 0)) return;
+ }
+ if ((unsigned)(py) < clh)
+ {
+ aa = ((xx - (x << 16)) >> 8);
+ if ((unsigned)(px) < clw)
+ pfunc(0, 255 - aa, color, p);
+ if ((unsigned)(px + 1) < clw)
+ pfunc(0, aa, color, p + 1);
+ }
+ xx += dxx;
+ py++;
+ p += dstw;
+ }
+}
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