path: root/gtk/gdkcolor.override

/* -*- Mode: C; c-basic-offset: 4 -*-
 * pygtk- Python bindings for the GTK toolkit.
 * Copyright (C) 1998-2003  James Henstridge
 *
 *   gdkcolor.override: gtk.gdk.Color and gtk.gdk.ColorMap overrides
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 * USA
 */
%%
ignore
  gdk_color_copy gdk_color_free
  gdk_color_hash gdk_color_equal
%%
override gdk_color_new kwargs
static int
_wrap_gdk_color_new(PyGBoxed *self,
                    PyObject *args,
                    PyObject *kwargs)
{
    static char *kwlist1[] = {"red", "green", "blue", "pixel", NULL };
    static char *kwlist2[] = { "spec", NULL };
    PyObject *red = Py_None, *green = Py_None, *blue = Py_None;
    const char *spec = NULL;
    GdkColor colour;

    /* Note: this constructor has become quite complicated, because it
     * is heavily overloaded.  Additionally, we try to optimize a
     * little. */

    if (PyArg_ParseTupleAndKeywords(args, kwargs, "|s:gdk.Color", kwlist2,
                                    &spec)) {
        if (!spec)
            memset(&colour, 0, sizeof(colour));
        else if (!gdk_color_parse(spec, &colour)) {
            PyErr_SetString(PyExc_ValueError,
                            "unable to parse colour specification");
            return -1;
        }

        goto success;
    }

    PyErr_Clear();

    if (PyArg_ParseTupleAndKeywords(args, kwargs, "|OOOk:gdk.Color", kwlist1,
                                    &red, &green, &blue, &colour.pixel)) {
        /* We don't allow mixing floats and non-floats as that is too
         * error-prone.  All non-floats are deemed integers in case
         * they have __int__() method. */
        int have_floats = 0;
        int have_nonfloats = 0;

        if (red == Py_None)
            colour.red = 0;
        else {
            if (PyFloat_Check(red)) {
                have_floats = 1;
                colour.red = MIN(MAX(0.0, PyFloat_AsDouble(red)), 1.0) * 65535.0;
            }
            else {
                have_nonfloats = 1;
                colour.red = PyInt_AsLong(red);
            }
        }

        if (PyErr_Occurred())
            return -1;

        if (green == Py_None)
            colour.green = 0;
        else {
            if (PyFloat_Check(green)) {
                if (have_nonfloats)
                    goto mixed_types_error;
                have_floats = 1;
                colour.green = MIN(MAX(0.0, PyFloat_AsDouble(green)), 1.0) * 65535.0;
            }
            else {
                if (have_floats)
                    goto mixed_types_error;
                have_nonfloats = 1;
                colour.green = PyInt_AsLong(green);
            }
        }

        if (PyErr_Occurred())
            return -1;

        if (blue == Py_None)
            colour.blue = 0;
        else {
            if (PyFloat_Check(blue)) {
                if (have_nonfloats)
                    goto mixed_types_error;
                colour.blue = MIN(MAX(0.0, PyFloat_AsDouble(blue)), 1.0) * 65535.0;
            }
            else {
                if (have_floats)
                    goto mixed_types_error;
                colour.blue = PyInt_AsLong(blue);
            }
        }

        if (PyErr_Occurred())
            return -1;

        goto success;

    mixed_types_error:
        PyErr_SetString(PyExc_TypeError, "arguments must either be all integers or all floats");
        return -1;
    }

    PyErr_Clear();
    PyErr_SetString(PyExc_TypeError, "Usage:\n"
                    "  gtk.gdk.Color(red, green, blue, pixel)  [all are optional]\n"
                    "  gtk.gdk.Color(spec)                     [see gtk.gdk.color_parse()]");
    return -1;

 success:
    self->boxed =  g_boxed_copy(GDK_TYPE_COLOR, &colour);
    self->free_on_dealloc = TRUE;
    self->gtype = GDK_TYPE_COLOR;
    
    return 0;
}

%%
define color_from_hsv kwargs
static PyObject *
_wrap_color_from_hsv (PyObject *ignored, PyObject *args, PyObject*kwargs)
{
    static char *kwlist[] = { "hue", "saturation", "value", NULL };
    gdouble hue, saturation, value;
    gdouble red, green, blue;
    GdkColor color;

    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ddd:gtk.gdk.color_from_hsv", kwlist,
                                     &hue, &saturation, &value))
        return NULL;

    /* See documentation of the class for rationale. */

    hue -= floor(hue);

    if (saturation > 1.0)
        saturation = 1.0;
    else if (saturation < 0.0)
        saturation = 0.0;

    if (value > 1.0)
        value = 1.0;
    else if (value < 0.0)
        value = 0.0;

    gtk_hsv_to_rgb(hue, saturation, value,
                   &red, &green, &blue);

    color.red = red * 65535.0;
    color.green = green * 65535.0;
    color.blue = blue * 65535.0;

    return pyg_boxed_new(GDK_TYPE_COLOR, &color, TRUE, TRUE);
}

%%
override-attr GdkColor.red
static int
_wrap_gdk_color__set_red(PyObject *self, PyObject *value, void *closure)
{
    long red = PyInt_AsLong(value);
    if (red == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->red = red;
        return 0;
    }
}
%%
override-attr GdkColor.blue
static int
_wrap_gdk_color__set_blue(PyObject *self, PyObject *value, void *closure)
{
    long blue = PyInt_AsLong(value);
    if (blue == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->blue = blue;
        return 0;
    }
}
%%
override-attr GdkColor.green
static int
_wrap_gdk_color__set_green(PyObject *self, PyObject *value, void *closure)
{
    long green = PyInt_AsLong(value);
    if (green == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->green = green;
        return 0;
    }
}
%%
override-attr GdkColor.pixel
static int
_wrap_gdk_color__set_pixel(PyObject *self, PyObject *value, void *closure)
{
    long pixel = PyInt_AsLong(value);
    if (pixel == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->pixel = pixel;
        return 0;
    }
}
%%
override-attr GdkColor.red_float

static PyObject *
_wrap_gdk_color__get_red_float(PyObject *self, void *closure)
{
    return PyFloat_FromDouble(pyg_boxed_get(self, GdkColor)->red / 65535.0);
}

static int
_wrap_gdk_color__set_red_float(PyObject *self, PyObject *value, void *closure)
{
    double red = PyFloat_AsDouble(value);
    if (red == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->red = MIN(MAX(0.0, red), 1.0) * 65535.0;
        return 0;
    }
}
%%
override-attr GdkColor.green_float

static PyObject *
_wrap_gdk_color__get_green_float(PyObject *self, void *closure)
{
    return PyFloat_FromDouble(pyg_boxed_get(self, GdkColor)->green / 65535.0);
}

static int
_wrap_gdk_color__set_green_float(PyObject *self, PyObject *value, void *closure)
{
    double green = PyFloat_AsDouble(value);
    if (green == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->green = MIN(MAX(0.0, green), 1.0) * 65535.0;
        return 0;
    }
}
%%
override-attr GdkColor.blue_float

static PyObject *
_wrap_gdk_color__get_blue_float(PyObject *self, void *closure)
{
    return PyFloat_FromDouble(pyg_boxed_get(self, GdkColor)->blue / 65535.0);
}

static int
_wrap_gdk_color__set_blue_float(PyObject *self, PyObject *value, void *closure)
{
    double blue = PyFloat_AsDouble(value);
    if (blue == -1 && PyErr_Occurred())
        return -1;
    else {
        pyg_boxed_get(self, GdkColor)->blue = MIN(MAX(0.0, blue), 1.0) * 65535.0;
        return 0;
    }
}
%%
override-attr GdkColor.hue

static PyObject *
_wrap_gdk_color__get_hue(PyObject *self, void *closure)
{
    GdkColor *color = pyg_boxed_get(self, GdkColor);
    gdouble red = color->red / 65535.0;
    gdouble green = color->green / 65535.0;
    gdouble blue = color->blue / 65535.0;
    gdouble hue;

    gtk_rgb_to_hsv(red, green, blue, &hue, NULL, NULL);
    return PyFloat_FromDouble(hue);
}
%%
override-attr GdkColor.saturation

static PyObject *
_wrap_gdk_color__get_saturation(PyObject *self, void *closure)
{
    GdkColor *color = pyg_boxed_get(self, GdkColor);
    gdouble red = color->red / 65535.0;
    gdouble green = color->green / 65535.0;
    gdouble blue = color->blue / 65535.0;
    gdouble saturation;

    gtk_rgb_to_hsv(red, green, blue, NULL, &saturation, NULL);
    return PyFloat_FromDouble(saturation);
}
%%
override-attr GdkColor.value

static PyObject *
_wrap_gdk_color__get_value(PyObject *self, void *closure)
{
    GdkColor *color = pyg_boxed_get(self, GdkColor);
    gdouble red = color->red / 65535.0;
    gdouble green = color->green / 65535.0;
    gdouble blue = color->blue / 65535.0;
    gdouble value;

    gtk_rgb_to_hsv(red, green, blue, NULL, NULL, &value);
    return PyFloat_FromDouble(value);
}
%%
override gdk_color_parse kwargs
static PyObject *
_wrap_gdk_color_parse(PyObject *self, PyObject *args, PyObject *kwargs)
{
    static char *kwlist[] = { "spec", NULL };
    const char *spec;
    GdkColor colour = { 0, };
    
    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s:color_parse", kwlist,
                                     &spec))
        return NULL;

    if (!gdk_color_parse(spec, &colour)) {
        PyErr_SetString(PyExc_ValueError,
                        "unable to parse colour specification");
        return NULL;
    }
    
    /* pyg_boxed_new handles NULL checking */    
    return pyg_boxed_new (GDK_TYPE_COLOR, &colour, TRUE, TRUE);
}
%%
override gdk_colormap_alloc_color kwargs
static PyObject *
_wrap_gdk_colormap_alloc_color(PyGObject *self, PyObject *args,
                              PyObject *kwargs)
{
    static char *kwlist1[] = { "red", "green", "blue", "writeable", "best_match", NULL };
    static char *kwlist2[] = { "spec", "writeable", "best_match", NULL };
    static char *kwlist3[] = { "color", "writeable", "best_match", NULL };
    GdkColor colour = { 0, 0, 0, 0 };
    gboolean writeable = FALSE;
    gboolean best_match = TRUE;

    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
                                     "HHH|ii:GdkColormap.alloc_color", kwlist1,
                                     &colour.red, &colour.green, &colour.blue,
                                     &writeable, &best_match)) {

 	PyObject *pycolour;
	
        PyErr_Clear();
        if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 					 "O|ii:GdkColormap.alloc_color",
 					 kwlist3, &pycolour,
 					 &writeable, &best_match)) {
            return NULL;
	}

 	if (!pyg_boxed_check(pycolour, GDK_TYPE_COLOR)) {
 	    gchar *color_name;
 
 	    PyErr_Clear();
 	    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
 					     "s|ii:GdkColormap.alloc_color",
 					     kwlist2, &color_name, &writeable,
 					     &best_match)) {
 		return NULL;
	    }
	    
 	    if (!gdk_color_parse(color_name, &colour)) {
 		PyErr_SetString(PyExc_ValueError,
 				"unable to parse colour specification");
 		return NULL;
	    }
 	} else {
 	    colour = *pyg_boxed_get(pycolour, GdkColor);
        }
    }
    
    if (!gdk_colormap_alloc_color(GDK_COLORMAP(self->obj),
                                  &colour, writeable, best_match)) {
        PyErr_SetString(PyExc_RuntimeError, "couldn't allocate colour");
        return NULL;
    }
    return pyg_boxed_new(GDK_TYPE_COLOR, &colour, TRUE, TRUE);
}
%%
override gdk_color_alloc kwargs
static PyObject *
_wrap_gdk_color_alloc(PyGObject *self, PyObject *args, PyObject *kwargs)
{
    if (!PyErr_Warn(PyExc_DeprecationWarning, "use GdkColormap.alloc_color")<0)
        return NULL;
    return _wrap_gdk_colormap_alloc_color(self, args, kwargs);
}
%%
override-slot GdkColor.tp_richcompare
static PyObject *
_wrap_gdk_color_tp_richcompare(PyObject *self, PyObject *other, int op)
{
    PyObject *result;

    if (PyObject_TypeCheck(self, &PyGdkColor_Type)
        && PyObject_TypeCheck(other, &PyGdkColor_Type)) {
        GdkColor *color1 = pyg_boxed_get(self, GdkColor);
        GdkColor *color2 = pyg_boxed_get(other, GdkColor);

        switch (op) {
        case Py_EQ:
            result = (gdk_color_equal(color1, color2)
                      ? Py_True : Py_False);
            break;
        case Py_NE:
            result = (!gdk_color_equal(color1, color2)
                      ? Py_True : Py_False);
            break;
        default:
            result = Py_NotImplemented;
        }
    }
    else
        result = Py_NotImplemented;

    Py_INCREF(result);
    return result;
}
%%
override-slot GdkColor.tp_repr
static int
pygdk_color_to_string_smart(char *buffer, int length, GdkColor *color)
{
    /* We use g_snprintf() because PyString_FromFormat() doesn't support %0Nx-like formats
     * (i.e. with leading zeros).
     *
     * Note that numbers here are used so that there is no off-by-one errors in
     * 'eval(repr(color))', i.e. so that 'eval(repr(color)) == color'.  See
     * pango_color_parse() for justification of these numbers.  Three-nibble color
     * components are deemed unimportant.
     */
    if (color->red % 0x1111 == 0 && color->green % 0x1111 == 0 && color->blue % 0x1111 == 0) {
        return g_snprintf(buffer, length, "#%01x%01x%01x",
                          color->red / 0x1111, color->green / 0x1111, color->blue / 0x1111);
    }
    else if (color->red % 0x0101 == 0 && color->green % 0x0101 == 0 && color->blue % 0x0101 == 0) {
        return g_snprintf(buffer, length, "#%02x%02x%02x",
                          color->red / 0x0101, color->green / 0x0101, color->blue / 0x0101);
    }
    else {
        return g_snprintf(buffer, length, "#%04x%04x%04x",
                          color->red, color->green, color->blue);
    }
}
static PyObject *
_wrap_gdk_color_tp_repr(PyGBoxed *self)
{
    static char buffer[0x40];
    int length = 0;

    length += g_snprintf(buffer + length, sizeof buffer - length, "%s('", self->ob_type->tp_name);
    length += pygdk_color_to_string_smart(buffer + length, sizeof buffer - length,
                                          pyg_boxed_get(self, GdkColor));
    length += g_snprintf(buffer + length, sizeof buffer - length, "')");

    return PyString_FromStringAndSize(buffer, length);
}
%%
override-slot GdkColor.tp_str
static PyObject *
_wrap_gdk_color_tp_str(PyGBoxed *self)
{
    /* gtk.gdk.Color has a meaningful informal representation, so we define both __repr__
     * and __str__, unlike for most other types.
     */
    static char buffer[1 + 4*3 + 1];  /* # + at most 4 digits per component + \0 */
    int length = pygdk_color_to_string_smart(buffer, sizeof buffer, pyg_boxed_get(self, GdkColor));

    return PyString_FromStringAndSize(buffer, length);
}
%%
override gdk_colormap_query_color kwargs
static PyObject *
_wrap_gdk_colormap_query_color(PyGObject *self, PyObject *args,
                               PyObject *kwargs)
{
    static char *kwlist[] = { "pixel", NULL };
    GdkColor colour = { 0, 0, 0, 0 };
    PyObject *py_pixel;
    gulong pixel;

    if (!PyArg_ParseTupleAndKeywords(args, kwargs,
                                     "O:GdkColormap.query_color", kwlist,
                                     &py_pixel))
        return NULL;

    if (PyLong_Check(py_pixel)) {
        pixel = PyLong_AsUnsignedLong(py_pixel);
        if (PyErr_Occurred())
            return NULL;
    } else if (PyInt_Check(py_pixel))
        pixel = PyInt_AS_LONG(py_pixel);
    else {
        PyErr_SetString(PyExc_TypeError, "GdkColormap.query_color: pixel must be"
                        " either int or long");
        return NULL;
    }

    gdk_colormap_query_color(GDK_COLORMAP(self->obj), pixel, &colour);
    
    return pyg_boxed_new(GDK_TYPE_COLOR, &colour, TRUE, TRUE);
}