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-rw-r--r--src/lua5/cdlua5.c70
-rw-r--r--src/lua5/cdluaim5.c43
2 files changed, 82 insertions, 31 deletions
diff --git a/src/lua5/cdlua5.c b/src/lua5/cdlua5.c
index bff00df..954389c 100644
--- a/src/lua5/cdlua5.c
+++ b/src/lua5/cdlua5.c
@@ -782,6 +782,13 @@ static int cdlua5_newindexchannel(lua_State *L)
return 0;
}
+static int cdl_ischar(const char* str, char c)
+{
+ if ((str[0] == c || str[0] == c-32) && str[1] == 0)
+ return 1;
+ return 0;
+}
+
/***************************************************************************\
* imagergb "gettable" fallback. This fallback is called when a LUA line *
* like "c = imagergb.r[y*w + x]" or "imagergb.r[y*w + x] = c" is executed. *
@@ -794,16 +801,22 @@ static int cdlua5_indeximagergb(lua_State *L)
cdluaImageRGB* imagergb_p = cdlua_checkimagergb(L, 1);
const char *index_s = luaL_checkstring(L, 2);
- if (*index_s == 'r' || *index_s == 'R')
+ if (cdl_ischar(index_s, 'r'))
channel = imagergb_p->red;
- else if (*index_s == 'g' || *index_s == 'G')
+ else if (cdl_ischar(index_s, 'g'))
channel = imagergb_p->green;
- else if (*index_s == 'b' || *index_s == 'B')
+ else if (cdl_ischar(index_s, 'b'))
channel = imagergb_p->blue;
- else
- luaL_argerror(L, 2, "index is an invalid channel name");
- cdlua_pushchannel(L, channel, imagergb_p->size);
+ if (channel)
+ cdlua_pushchannel(L, channel, imagergb_p->size);
+ else
+ {
+ /* get raw method */
+ lua_getmetatable(L, 1);
+ lua_pushvalue(L, 2);
+ lua_rawget(L, -2);
+ }
return 1;
}
@@ -820,18 +833,24 @@ static int cdlua5_indeximagergba(lua_State *L)
cdluaImageRGBA* imagergba_p = cdlua_checkimagergba(L, 1);
const char *index_s = luaL_checkstring(L, 2);
- if (*index_s == 'r' || *index_s == 'R')
+ if (cdl_ischar(index_s, 'r'))
channel = imagergba_p->red;
- else if (*index_s == 'g' || *index_s == 'G')
+ else if (cdl_ischar(index_s, 'g'))
channel = imagergba_p->green;
- else if (*index_s == 'b' || *index_s == 'B')
+ else if (cdl_ischar(index_s, 'b'))
channel = imagergba_p->blue;
- else if (*index_s == 'a' || *index_s == 'A')
+ else if (cdl_ischar(index_s, 'a'))
channel = imagergba_p->alpha;
- else
- luaL_argerror(L, 2, "index is an invalid channel name");
- cdlua_pushchannel(L, channel, imagergba_p->size);
+ if (channel)
+ cdlua_pushchannel(L, channel, imagergba_p->size);
+ else
+ {
+ /* get raw method */
+ lua_getmetatable(L, 1);
+ lua_pushvalue(L, 2);
+ lua_rawget(L, -2);
+ }
return 1;
}
@@ -845,31 +864,36 @@ static int cdlua5_indeximagergba(lua_State *L)
static int cdlua5_indexbitmap(lua_State *L)
{
unsigned char* channel = NULL;
-
cdBitmap* bitmap = cdlua_checkbitmap(L, 1);
const char *index_s = luaL_checkstring(L, 2);
int size = bitmap->w * bitmap->h;
- if (*index_s == 'r' || *index_s == 'R')
+ if (cdl_ischar(index_s, 'r'))
channel = cdBitmapGetData(bitmap, CD_IRED);
- else if (*index_s == 'g' || *index_s == 'G')
+ else if (cdl_ischar(index_s, 'g'))
channel = cdBitmapGetData(bitmap, CD_IGREEN);
- else if (*index_s == 'b' || *index_s == 'B')
+ else if (cdl_ischar(index_s, 'b'))
channel = cdBitmapGetData(bitmap, CD_IBLUE);
- else if (*index_s == 'a' || *index_s == 'A')
+ else if (cdl_ischar(index_s, 'a'))
channel = cdBitmapGetData(bitmap, CD_IALPHA);
- else if (*index_s == 'i' || *index_s == 'I')
+ else if (cdl_ischar(index_s, 'i'))
channel = cdBitmapGetData(bitmap, CD_INDEX);
- else if (*index_s == 'c' || *index_s == 'C')
+ else if (cdl_ischar(index_s, 'c'))
{
channel = cdBitmapGetData(bitmap, CD_COLORS);
size = -1;
}
- else
- luaL_argerror(L, 2, "index is an invalid channel name");
- cdlua_pushchannel(L, channel, size);
+ if (channel)
+ cdlua_pushchannel(L, channel, size);
+ else
+ {
+ /* get raw method */
+ lua_getmetatable(L, 1);
+ lua_pushvalue(L, 2);
+ lua_rawget(L, -2);
+ }
return 1;
}
diff --git a/src/lua5/cdluaim5.c b/src/lua5/cdluaim5.c
index 77ffc4f..815cd0f 100644
--- a/src/lua5/cdluaim5.c
+++ b/src/lua5/cdluaim5.c
@@ -37,7 +37,12 @@ static int imlua_cdInitBitmap(lua_State *L)
luaL_argerror(L, 1, "image is not a bitmap");
if (image->color_space == IM_RGB)
- bitmap = cdInitBitmap(image->width, image->height, CD_RGB, image->data[0], image->data[1], image->data[2]);
+ {
+ if (image->has_alpha)
+ bitmap = cdInitBitmap(image->width, image->height, CD_RGBA, image->data[0], image->data[1], image->data[2], image->data[3]);
+ else
+ bitmap = cdInitBitmap(image->width, image->height, CD_RGB, image->data[0], image->data[1], image->data[2]);
+ }
else
bitmap = cdInitBitmap(image->width, image->height, CD_MAP, image->data[0], image->palette);
@@ -60,7 +65,12 @@ static int imlua_cdCreateBitmap(lua_State *L)
luaL_argerror(L, 1, "image is not a bitmap");
if (image->color_space == IM_RGB)
- bitmap = cdCreateBitmap(image->width, image->height, CD_RGB);
+ {
+ if (image->has_alpha)
+ bitmap = cdCreateBitmap(image->width, image->height, CD_RGBA);
+ else
+ bitmap = cdCreateBitmap(image->width, image->height, CD_RGB);
+ }
else
bitmap = cdCreateBitmap(image->width, image->height, CD_MAP);
@@ -72,6 +82,9 @@ static int imlua_cdCreateBitmap(lua_State *L)
memcpy(cdBitmapGetData(bitmap, CD_IRED), image->data[0], image->plane_size);
memcpy(cdBitmapGetData(bitmap, CD_IGREEN), image->data[1], image->plane_size);
memcpy(cdBitmapGetData(bitmap, CD_IBLUE), image->data[2], image->plane_size);
+
+ if (image->has_alpha)
+ memcpy(cdBitmapGetData(bitmap, CD_IALPHA), image->data[3], image->plane_size);
}
else
{
@@ -91,7 +104,7 @@ static int cdlua_imImageCreate(lua_State *L)
imImage *image;
cdBitmap* bitmap = cdlua_checkbitmap(L, 1);
- if (bitmap->type == CD_RGB)
+ if (bitmap->type == CD_RGB || bitmap->type == CD_RGBA)
image = imImageCreate(bitmap->w, bitmap->h, IM_RGB, IM_BYTE);
else
image = imImageCreate(bitmap->w, bitmap->h, IM_MAP, IM_BYTE);
@@ -99,11 +112,14 @@ static int cdlua_imImageCreate(lua_State *L)
if (!image)
luaL_error(L, "insuficient memory to create image");
- if (bitmap->type == CD_RGB)
+ if (bitmap->type == CD_RGB || bitmap->type == CD_RGBA)
{
memcpy(image->data[0], cdBitmapGetData(bitmap, CD_IRED), image->plane_size);
memcpy(image->data[1], cdBitmapGetData(bitmap, CD_IGREEN), image->plane_size);
memcpy(image->data[2], cdBitmapGetData(bitmap, CD_IBLUE), image->plane_size);
+
+ if (bitmap->type == CD_RGBA)
+ memcpy(image->data[3], cdBitmapGetData(bitmap, CD_IALPHA), image->plane_size);
}
else
{
@@ -192,16 +208,27 @@ static int imlua_cdCreateCanvas(lua_State * L)
imImage *image = imlua_checkimage(L, 1);
+ if (image->color_space != IM_RGB || image->data_type != IM_BYTE)
+ luaL_argerror(L, 1, "image is not RGB/byte");
+
if (lua_isnoneornil(L, 2))
{
- sprintf(data_s, "%dx%d %p %p %p", image->width, image->height,
- image->data[0], image->data[1], image->data[2]);
+ if (image->has_alpha)
+ sprintf(data_s, "%dx%d %p %p %p %p -a", image->width, image->height,
+ image->data[0], image->data[1], image->data[2], image->data[3]);
+ else
+ sprintf(data_s, "%dx%d %p %p %p", image->width, image->height,
+ image->data[0], image->data[1], image->data[2]);
}
else
{
double res_f = luaL_checknumber(L, 2);
- sprintf(data_s, "%dx%d %p %p %p -r%g", image->width, image->height,
- image->data[0], image->data[1], image->data[2], res_f);
+ if (image->has_alpha)
+ sprintf(data_s, "%dx%d %p %p %p %p -r%g -a", image->width, image->height,
+ image->data[0], image->data[1], image->data[2], image->data[3], res_f);
+ else
+ sprintf(data_s, "%dx%d %p %p %p -r%g", image->width, image->height,
+ image->data[0], image->data[1], image->data[2], res_f);
}
canvas = cdCreateCanvas(CD_IMAGERGB, data_s);
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-31 10:57:30 +0000