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[script] Allow alpha color component to be set when generating text images

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The Image.Text function now accepts an alpha parameter of the color used. If
not set this will be assumed to be 1 (thus reverse compatible).
This commit is contained in:
Charlie Brej 2010-03-23 22:28:22 +00:00
parent 75ae8d50cc
commit 6afeecaafe
2 changed files with 16 additions and 5 deletions
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17
src/plugins/splash/script/script-lib-image.c
View file

@ -158,6 +158,7 @@ static script_return_t image_text (script_state_t *state,
script_lib_image_data_t *data = user_data;
ply_pixel_buffer_t *image;
ply_label_t *label;
script_obj_t *alpha_obj;
int width, height;
char *text = script_obj_hash_get_string (state->local, "text");
@ -166,12 +167,21 @@ static script_return_t image_text (script_state_t *state,
float red = CLAMP(script_obj_hash_get_number (state->local, "red"), 0, 1);
float green = CLAMP(script_obj_hash_get_number (state->local, "green"), 0, 1);
float blue = CLAMP(script_obj_hash_get_number (state->local, "blue"), 0, 1);
float alpha = 1;
alpha_obj = script_obj_hash_peek_element (state->local, "alpha");
if (alpha_obj)
{
alpha = CLAMP(script_obj_as_number (alpha_obj), 0, 1);
script_obj_unref(alpha_obj);
}
if (!text) return script_return_obj_null ();
label = ply_label_new ();
ply_label_set_text (label, text);
ply_label_set_color (label, red, green, blue, 1.0);
ply_label_set_color (label, red, green, blue, alpha);
ply_label_show (label, NULL, 0, 0);
width = ply_label_get_width (label);
@ -233,6 +243,7 @@ script_lib_image_data_t *script_lib_image_setup (script_state_t *state,
"red",
"green",
"blue",
"alpha",
NULL);
script_obj_unref (image_hash);

4
src/plugins/splash/script/script-lib-image.script
View file

@ -14,9 +14,9 @@ Image.Scale = fun (width, height)
return Image.Adopt (this._Scale(width, height));
};
Image.Text = fun (text, red, green, blue)
Image.Text = fun (text, red, green, blue, alpha)
{
return Image.Adopt (Image._Text (text, red, green, blue));
return Image.Adopt (Image._Text (text, red, green, blue, alpha));
};
Image |= fun (filename)