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authorPřemysl Janouch <p.janouch@gmail.com>2011-02-11 18:07:49 +0100
committerPřemysl Janouch <p.janouch@gmail.com>2011-02-11 18:07:49 +0100
commit2c5f2f5b3f4782b25b35f1afc3ab63dd19b48a28 (patch)
tree6ad946c04b037160ae72f26e2fedb3d6ab211415 /liblogdiag/ld-lua.c
parentd96acedcdbab4e8c0ce54d7a3c5c28334557adbd (diff)
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Export more cairo functions to Lua.
Also rewrite the wrappers to be shorter.
Diffstat (limited to 'liblogdiag/ld-lua.c')
-rw-r--r--liblogdiag/ld-lua.c124
1 files changed, 63 insertions, 61 deletions
diff --git a/liblogdiag/ld-lua.c b/liblogdiag/ld-lua.c
index b97b892..522ecec 100644
--- a/liblogdiag/ld-lua.c
+++ b/liblogdiag/ld-lua.c
@@ -94,6 +94,9 @@ static int ld_lua_cairo_save (lua_State *L);
static int ld_lua_cairo_restore (lua_State *L);
static int ld_lua_cairo_get_line_width (lua_State *L);
static int ld_lua_cairo_set_line_width (lua_State *L);
+static int ld_lua_cairo_translate (lua_State *L);
+static int ld_lua_cairo_scale (lua_State *L);
+static int ld_lua_cairo_rotate (lua_State *L);
static int ld_lua_cairo_move_to (lua_State *L);
static int ld_lua_cairo_line_to (lua_State *L);
static int ld_lua_cairo_curve_to (lua_State *L);
@@ -122,6 +125,9 @@ static luaL_Reg ld_lua_cairo_table[] =
{"restore", ld_lua_cairo_restore},
{"get_line_width", ld_lua_cairo_get_line_width},
{"set_line_width", ld_lua_cairo_set_line_width},
+ {"translate", ld_lua_cairo_translate},
+ {"scale", ld_lua_cairo_scale},
+ {"rotate", ld_lua_cairo_rotate},
{"move_to", ld_lua_cairo_move_to},
{"line_to", ld_lua_cairo_line_to},
{"curve_to", ld_lua_cairo_curve_to},
@@ -649,15 +655,21 @@ get_cairo_scale (cairo_t *cr)
return dx;
}
-#define LD_LUA_CAIRO_TRIVIAL(name) \
+#define LD_LUA_CAIRO_BEGIN(name) \
static int \
ld_lua_cairo_ ## name (lua_State *L) \
{ \
LdLuaDrawData *data; \
+
+#define LD_LUA_CAIRO_END(n_values) \
+ return (n_values); \
+}
+
+#define LD_LUA_CAIRO_TRIVIAL(name) \
+LD_LUA_CAIRO_BEGIN (name) \
data = lua_touserdata (L, lua_upvalueindex (1)); \
cairo_ ## name (data->cr); \
- return 0; \
-}
+LD_LUA_CAIRO_END (0)
LD_LUA_CAIRO_TRIVIAL (new_path)
LD_LUA_CAIRO_TRIVIAL (new_sub_path)
@@ -670,60 +682,67 @@ LD_LUA_CAIRO_TRIVIAL (fill_preserve)
LD_LUA_CAIRO_TRIVIAL (clip)
LD_LUA_CAIRO_TRIVIAL (clip_preserve)
-static int
-ld_lua_cairo_save (lua_State *L)
-{
- LdLuaDrawData *data;
-
+LD_LUA_CAIRO_BEGIN (save)
data = lua_touserdata (L, lua_upvalueindex (1));
if (data->save_count + 1)
{
data->save_count++;
cairo_save (data->cr);
}
- return 0;
-}
-
-static int
-ld_lua_cairo_restore (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_END (0)
+LD_LUA_CAIRO_BEGIN (restore)
data = lua_touserdata (L, lua_upvalueindex (1));
if (data->save_count)
{
data->save_count--;
cairo_restore (data->cr);
}
- return 0;
-}
-
-static int
-ld_lua_cairo_get_line_width (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_END (0)
+LD_LUA_CAIRO_BEGIN (get_line_width)
data = lua_touserdata (L, lua_upvalueindex (1));
lua_pushnumber (L, cairo_get_line_width (data->cr)
* get_cairo_scale (data->cr));
- return 1;
-}
-
-static int
-ld_lua_cairo_set_line_width (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_END (1)
+LD_LUA_CAIRO_BEGIN (set_line_width)
data = lua_touserdata (L, lua_upvalueindex (1));
cairo_set_line_width (data->cr, luaL_checknumber (L, 1)
/ get_cairo_scale (data->cr));
- return 0;
-}
+LD_LUA_CAIRO_END (0)
-static int
-ld_lua_cairo_move_to (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_BEGIN (translate)
+ lua_Number x, y;
+
+ data = lua_touserdata (L, lua_upvalueindex (1));
+
+ x = luaL_checknumber (L, 1);
+ y = luaL_checknumber (L, 2);
+
+ cairo_translate (data->cr, x, y);
+LD_LUA_CAIRO_END (0)
+
+LD_LUA_CAIRO_BEGIN (scale)
+ lua_Number sx, sy;
+
+ data = lua_touserdata (L, lua_upvalueindex (1));
+
+ sx = luaL_checknumber (L, 1);
+ sy = luaL_checknumber (L, 2);
+
+ cairo_scale (data->cr, sx, sy);
+LD_LUA_CAIRO_END (0)
+
+LD_LUA_CAIRO_BEGIN (rotate)
+ lua_Number angle;
+
+ data = lua_touserdata (L, lua_upvalueindex (1));
+ angle = luaL_checknumber (L, 1);
+ cairo_rotate (data->cr, angle);
+LD_LUA_CAIRO_END (0)
+
+LD_LUA_CAIRO_BEGIN (move_to)
lua_Number x, y;
data = lua_touserdata (L, lua_upvalueindex (1));
@@ -732,13 +751,9 @@ ld_lua_cairo_move_to (lua_State *L)
y = luaL_checknumber (L, 2);
cairo_move_to (data->cr, x, y);
- return 0;
-}
+LD_LUA_CAIRO_END (0)
-static int
-ld_lua_cairo_line_to (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_BEGIN (line_to)
lua_Number x, y;
data = lua_touserdata (L, lua_upvalueindex (1));
@@ -747,13 +762,9 @@ ld_lua_cairo_line_to (lua_State *L)
y = luaL_checknumber (L, 2);
cairo_line_to (data->cr, x, y);
- return 0;
-}
+LD_LUA_CAIRO_END (0)
-static int
-ld_lua_cairo_curve_to (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_BEGIN (curve_to)
lua_Number x1, y1, x2, y2, x3, y3;
data = lua_touserdata (L, lua_upvalueindex (1));
@@ -766,13 +777,9 @@ ld_lua_cairo_curve_to (lua_State *L)
y3 = luaL_checknumber (L, 6);
cairo_curve_to (data->cr, x1, y1, x2, y2, x3, y3);
- return 0;
-}
+LD_LUA_CAIRO_END (0)
-static int
-ld_lua_cairo_arc (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_BEGIN (arc)
lua_Number xc, yc, radius, angle1, angle2;
data = lua_touserdata (L, lua_upvalueindex (1));
@@ -784,13 +791,9 @@ ld_lua_cairo_arc (lua_State *L)
angle2 = luaL_checknumber (L, 5);
cairo_arc (data->cr, xc, yc, radius, angle1, angle2);
- return 0;
-}
+LD_LUA_CAIRO_END (0)
-static int
-ld_lua_cairo_arc_negative (lua_State *L)
-{
- LdLuaDrawData *data;
+LD_LUA_CAIRO_BEGIN (arc_negative)
lua_Number xc, yc, radius, angle1, angle2;
data = lua_touserdata (L, lua_upvalueindex (1));
@@ -802,6 +805,5 @@ ld_lua_cairo_arc_negative (lua_State *L)
angle2 = luaL_checknumber (L, 5);
cairo_arc_negative (data->cr, xc, yc, radius, angle1, angle2);
- return 0;
-}
+LD_LUA_CAIRO_END (0)