diff options
Diffstat (limited to 'plug-ins/pygimp/gimpcolormodule.c')
| -rw-r--r-- | plug-ins/pygimp/gimpcolormodule.c | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/plug-ins/pygimp/gimpcolormodule.c b/plug-ins/pygimp/gimpcolormodule.c new file mode 100644 index 0000000..8b4a478 --- /dev/null +++ b/plug-ins/pygimp/gimpcolormodule.c @@ -0,0 +1,433 @@ +/* -*- Mode: C; c-basic-offset: 4 -*- + * Gimp-Python - allows the writing of Gimp plugins in Python. + * Copyright (C) 2005-2006 Manish Singh <yosh@gimp.org> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include "pygimpcolor.h" + +#define _INSIDE_PYGIMPCOLOR_ +#include "pygimpcolor-api.h" + +#include "pygimp-util.h" + + +static PyObject * +pygimp_rgb_parse_name(PyObject *self, PyObject *args, PyObject *kwargs) +{ + char *name; + int len; + GimpRGB rgb; + gboolean success; + static char *kwlist[] = { "name", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#:rgb_parse_name", kwlist, + &name, &len)) + return NULL; + + rgb.a = 1.0; + success = gimp_rgb_parse_name(&rgb, name, len); + + if (!success) { + PyErr_SetString(PyExc_ValueError, "unable to parse color name"); + return NULL; + } + + return pygimp_rgb_new(&rgb); +} + +static PyObject * +pygimp_rgb_parse_hex(PyObject *self, PyObject *args, PyObject *kwargs) +{ + char *hex; + int len; + GimpRGB rgb; + gboolean success; + static char *kwlist[] = { "hex", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s#:rgb_parse_hex", kwlist, + &hex, &len)) + return NULL; + + rgb.a = 1.0; + success = gimp_rgb_parse_hex(&rgb, hex, len); + + if (!success) { + PyErr_SetString(PyExc_ValueError, "unable to parse hex value"); + return NULL; + } + + return pygimp_rgb_new(&rgb); +} + +static PyObject * +pygimp_rgb_parse_css(PyObject *self, PyObject *args, PyObject *kwargs) +{ + char *css; + int len; + GimpRGB rgb; + gboolean success, with_alpha = FALSE; + static char *kwlist[] = { "css", "with_alpha", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, + "s#|i:rgb_parse_css", kwlist, + &css, &len, &with_alpha)) + return NULL; + + if (with_alpha) + success = gimp_rgba_parse_css(&rgb, css, len); + else { + rgb.a = 1.0; + success = gimp_rgb_parse_css(&rgb, css, len); + } + + if (!success) { + PyErr_SetString(PyExc_ValueError, "unable to parse CSS color"); + return NULL; + } + + return pygimp_rgb_new(&rgb); +} + +static PyObject * +pygimp_rgb_list_names(PyObject *self) +{ + int num_names, i; + const char **names; + GimpRGB *colors; + PyObject *dict, *color; + + num_names = gimp_rgb_list_names(&names, &colors); + + dict = PyDict_New(); + if (!dict) + goto cleanup; + + for (i = 0; i < num_names; i++) { + color = pygimp_rgb_new(&colors[i]); + + if (!color) + goto bail; + + if (PyDict_SetItemString(dict, names[i], color) < 0) { + Py_DECREF(color); + goto bail; + } + + Py_DECREF(color); + } + + goto cleanup; + +bail: + Py_DECREF(dict); + dict = NULL; + +cleanup: + g_free(names); + g_free(colors); + + return dict; +} + +static PyObject * +pygimp_bilinear(PyObject *self, PyObject *args, PyObject *kwargs) +{ + gdouble x, y; + gdouble values[4]; + PyObject *py_values; + static char *kwlist[] = { "x", "y", "values", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, + "ddO:bilinear", kwlist, + &x, &y, &py_values)) + return NULL; + + if (PyString_Check(py_values)) { + if (PyString_Size(py_values) == 4) { + guchar ret; + ret = gimp_bilinear_8(x, y, (guchar *)PyString_AsString(py_values)); + return PyString_FromStringAndSize((char *)&ret, 1); + } + } else if (PySequence_Check(py_values)) { + if (PySequence_Size(py_values) == 4) { + int i; + for (i = 0; i < 4; i++) { + PyObject *v; + v = PySequence_GetItem(py_values, i); + values[i] = PyFloat_AsDouble(v); + Py_DECREF(v); + } + return PyFloat_FromDouble(gimp_bilinear(x, y, values)); + } + } + + PyErr_SetString(PyExc_TypeError, "values is not a sequence of 4 items"); + return NULL; +} + +static PyObject * +pygimp_bilinear_color(PyObject *self, PyObject *args, PyObject *kwargs, gboolean with_alpha) +{ + gdouble x, y; + GimpRGB values[4]; + GimpRGB rgb; + PyObject *py_values, *v; + int i, success; + static char *kwlist[] = { "x", "y", "values", NULL }; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, + with_alpha ? "ddO:bilinear_rgba" + : "ddO:bilinear_rgb", + kwlist, + &x, &y, &py_values)) + return NULL; + + if (!PySequence_Check(py_values) || PySequence_Size(py_values) != 4) { + PyErr_SetString(PyExc_TypeError, "values is not a sequence of 4 items"); + return NULL; + } + + for (i = 0; i < 4; i++) { + v = PySequence_GetItem(py_values, i); + success = pygimp_rgb_from_pyobject(v, &values[i]); + Py_DECREF(v); + if (!success) { + PyErr_Format(PyExc_TypeError, "values[%d] is not a GimpRGB", i); + return NULL; + } + } + + if (with_alpha) + rgb = gimp_bilinear_rgba(x, y, values); + else + rgb = gimp_bilinear_rgb(x, y, values); + + return pygimp_rgb_new(&rgb); +} + +static PyObject * +pygimp_bilinear_rgb(PyObject *self, PyObject *args, PyObject *kwargs) +{ + return pygimp_bilinear_color(self, args, kwargs, FALSE); +} + +static PyObject * +pygimp_bilinear_rgba(PyObject *self, PyObject *args, PyObject *kwargs) +{ + return pygimp_bilinear_color(self, args, kwargs, TRUE); +} + +#if 0 +static PyObject * +pygimp_bilinear_pixels_8(PyObject *self, PyObject *args, PyObject *kwargs) +{ + Py_INCREF(Py_None); + return Py_None; +} + +typedef struct +{ + PyObject *func; + PyObject *data; +} ProxyData; + +static void +proxy_render(gdouble x, gdouble y, GimpRGB *color, gpointer pdata) +{ + ProxyData *data = pdata; + + if (data->data) + PyObject_CallFunction(data->func, "ddO&O", x, y, pygimp_rgb_new, color, + data->data); + else + PyObject_CallFunction(data->func, "ddO&", x, y, pygimp_rgb_new, color); +} + +static void +proxy_put_pixel(gint x, gint y, GimpRGB *color, gpointer pdata) +{ + ProxyData *data = pdata; + + if (data->data) + PyObject_CallFunction(data->func, "iiO&O", x, y, pygimp_rgb_new, color, + data->data); + else + PyObject_CallFunction(data->func, "iiO&", x, y, pygimp_rgb_new, color); +} + +static void +proxy_progress(gint min, gint max, gint current, gpointer pdata) +{ + ProxyData *data = pdata; + + if (data->data) + PyObject_CallFunction(data->func, "iiiO", min, max, current, + data->data); + else + PyObject_CallFunction(data->func, "iii", min, max, current); +} + +static PyObject * +pygimp_adaptive_supersample_area(PyObject *self, PyObject *args, PyObject *kwargs) +{ + gulong r; + + gint x1, y1, x2, y2, max_depth; + gdouble threshold; + PyObject *py_func_render = NULL, *py_data_render = NULL; + PyObject *py_func_put_pixel = NULL, *py_data_put_pixel = NULL; + PyObject *py_func_progress = NULL, *py_data_progress = NULL; + + GimpRenderFunc proxy_func_render = NULL; + GimpPutPixelFunc proxy_func_put_pixel = NULL; + GimpProgressFunc proxy_func_progress = NULL; + + ProxyData proxy_data_render, proxy_data_put_pixel, proxy_data_progress; + + static char *kwlist[] = { + "x1", "y1", "x2", "y2", "max_depth", "threshold", + "render_func", "render_data", + "put_pixel_func", "put_pixel_data", + "progress_func", "progress_data", + NULL + }; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, + "iiiiid|OOOOOO" + ":adaptive_supersample_area", + kwlist, + &x1, &y1, &x2, &y2, &max_depth, &threshold, + &py_func_render, &py_data_render, + &py_func_put_pixel, &py_data_put_pixel, + &py_func_progress, &py_data_progress)) + return NULL; + +#define PROCESS_FUNC(n) G_STMT_START { \ + if (py_func_##n != NULL) { \ + if (!PyCallable_Check(py_func_##n)) { \ + PyErr_SetString(PyExc_TypeError, #n "_func " \ + "must be callable"); \ + return NULL; \ + } \ + \ + proxy_func_##n = proxy_##n; \ + \ + proxy_data_##n.func = py_func_##n; \ + proxy_data_##n.data = py_data_##n; \ + } \ +} G_STMT_END + + PROCESS_FUNC(render); + PROCESS_FUNC(put_pixel); + PROCESS_FUNC(progress); + +#undef PROCESS_FUNC + +#define PASS_FUNC(n) proxy_func_##n, &proxy_data_##n + + r = gimp_adaptive_supersample_area (x1, y1, x2, y2, max_depth, threshold, + PASS_FUNC(render), + PASS_FUNC(put_pixel), + PASS_FUNC(progress)); + +#undef PASS_FUNC + + return PyInt_FromLong(r); +} +#endif + +/* List of methods defined in the module */ + +static struct PyMethodDef gimpcolor_methods[] = { + {"rgb_parse_name", (PyCFunction)pygimp_rgb_parse_name, METH_VARARGS | METH_KEYWORDS}, + {"rgb_parse_hex", (PyCFunction)pygimp_rgb_parse_hex, METH_VARARGS | METH_KEYWORDS}, + {"rgb_parse_css", (PyCFunction)pygimp_rgb_parse_css, METH_VARARGS | METH_KEYWORDS}, + {"rgb_names", (PyCFunction)pygimp_rgb_list_names, METH_NOARGS}, + {"bilinear", (PyCFunction)pygimp_bilinear, METH_VARARGS | METH_KEYWORDS}, + {"bilinear_rgb", (PyCFunction)pygimp_bilinear_rgb, METH_VARARGS | METH_KEYWORDS}, + {"bilinear_rgba", (PyCFunction)pygimp_bilinear_rgba, METH_VARARGS | METH_KEYWORDS}, +#if 0 + {"bilinear_pixels_8", (PyCFunction)pygimp_bilinear_pixels_8, METH_VARARGS | METH_KEYWORDS}, + {"adaptive_supersample_area", (PyCFunction)pygimp_adaptive_supersample_area, METH_VARARGS | METH_KEYWORDS}, +#endif + {NULL, (PyCFunction)NULL, 0, NULL} /* sentinel */ +}; + + +static struct _PyGimpColor_Functions pygimpcolor_api_functions = { + &PyGimpRGB_Type, + pygimp_rgb_new, + &PyGimpHSV_Type, + pygimp_hsv_new, + &PyGimpHSL_Type, + pygimp_hsl_new, + &PyGimpCMYK_Type, + pygimp_cmyk_new, + pygimp_rgb_from_pyobject +}; + + +/* Initialization function for the module (*must* be called initgimpcolor) */ + +static char gimpcolor_doc[] = +"This module provides interfaces to allow you to write gimp plug-ins" +; + +void initgimpcolor(void); + +PyMODINIT_FUNC +initgimpcolor(void) +{ + PyObject *m, *d; + + pygimp_init_pygobject(); + + /* Create the module and add the functions */ + m = Py_InitModule3("gimpcolor", gimpcolor_methods, gimpcolor_doc); + + d = PyModule_GetDict(m); + + pyg_register_boxed(d, "RGB", GIMP_TYPE_RGB, &PyGimpRGB_Type); + pyg_register_boxed(d, "HSV", GIMP_TYPE_HSV, &PyGimpHSV_Type); + pyg_register_boxed(d, "HSL", GIMP_TYPE_HSL, &PyGimpHSL_Type); + pyg_register_boxed(d, "CMYK", GIMP_TYPE_CMYK, &PyGimpCMYK_Type); + + PyModule_AddObject(m, "RGB_COMPOSITE_NONE", + PyInt_FromLong(GIMP_RGB_COMPOSITE_NONE)); + PyModule_AddObject(m, "RGB_COMPOSITE_NORMAL", + PyInt_FromLong(GIMP_RGB_COMPOSITE_NORMAL)); + PyModule_AddObject(m, "RGB_COMPOSITE_BEHIND", + PyInt_FromLong(GIMP_RGB_COMPOSITE_BEHIND)); + + PyModule_AddObject(m, "RGB_LUMINANCE_RED", + PyFloat_FromDouble(GIMP_RGB_LUMINANCE_RED)); + PyModule_AddObject(m, "RGB_LUMINANCE_GREEN", + PyFloat_FromDouble(GIMP_RGB_LUMINANCE_GREEN)); + PyModule_AddObject(m, "RGB_LUMINANCE_BLUE", + PyFloat_FromDouble(GIMP_RGB_LUMINANCE_BLUE)); + + /* for other modules */ + PyModule_AddObject(m, "_PyGimpColor_API", + PyCObject_FromVoidPtr(&pygimpcolor_api_functions, NULL)); + + /* Check for errors */ + if (PyErr_Occurred()) + Py_FatalError("can't initialize module gimpcolor"); +} |