From 6045cac966af7bdc0309dae41c59bf024df73096 Mon Sep 17 00:00:00 2001 From: Julien Danjou Date: Thu, 23 Oct 2008 09:56:06 +0200 Subject: [PATCH] surface: add get_data object This allows to get data as a string and to either write it directly or put it back in another library. Signed-off-by: Julien Danjou --- obj_surface.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/obj_surface.c b/obj_surface.c index 748cdc4..c68af49 100644 --- a/obj_surface.c +++ b/obj_surface.c @@ -374,6 +374,20 @@ surface_set_fallback_resolution (lua_State *L) { return 0; } +static int +surface_get_data (lua_State *L) { + unsigned char *data; + cairo_surface_t **obj = luaL_checkudata(L, 1, MT_NAME_SURFACE); + int width = cairo_image_surface_get_width(*obj); + int height = cairo_image_surface_get_height(*obj); + int stride = cairo_format_stride_for_width(cairo_image_surface_get_format(*obj), width); + data = cairo_image_surface_get_data(*obj); + + lua_pushlstring(L, data, height * stride); + + return 1; +} + #if CAIRO_HAS_PDF_SURFACE || CAIRO_HAS_PS_SURFACE static int surface_set_size (lua_State *L) { @@ -475,6 +489,7 @@ surface_methods[] = { { "set_fallback_resolution", surface_set_fallback_resolution }, { "set_size", surface_set_size }, { "show_page", surface_show_page }, + { "get_data", surface_get_data }, #if CAIRO_HAS_PNG_FUNCTIONS { "write_to_png", surface_write_to_png }, #endif -- 1.5.6.5