1 // -*- mode: C; indent-tabs-mode: nil; c-basic-offset: 2; -*-
6 #include "screeninfo.h"
12 static Bool cleancache = False;
13 static PyObject *colorcache = NULL;
15 static void parseColorName(OtkColor *self, const char *name) {
18 // get rgb values from colorname
24 if (!XParseColor(OBDisplay->display,
25 OtkDisplay_ScreenInfo(OBDisplay, self->screen)->colormap,
27 fprintf(stderr, "OtkColor: color parse error: \"%s\"\n", name);
28 self->red = self->green = self->blue = 0;
30 self->red = xcol.red >> 8;
31 self->green = xcol.green >> 8;
32 self->blue = xcol.blue >> 8;
36 static void doCacheCleanup() {
37 unsigned long *pixels;
40 PyObject *key; // this is a color too, but i dont need to use it as such
43 // ### TODO - support multiple displays!
44 if (!PyDict_Size(colorcache)) return; // nothing to do
46 pixels = malloc(sizeof(unsigned long) * PyDict_Size(colorcache));
48 for (i = 0; i < ScreenCount(OBDisplay->display); i++) {
52 while (PyDict_Next(colorcache, &ppos, &key, (PyObject**)&color)) {
53 // get the screen from the hash
54 if (color->screen != i) continue; // wrong screen
56 // does someone other than the cache have a reference? (the cache gets 2)
57 if (color->ob_refcnt > 2)
60 pixels[count++] = color->pixel;
61 PyDict_DelItem(colorcache, key);
62 --ppos; // back up one in the iteration
66 XFreeColors(OBDisplay->display,
67 OtkDisplay_ScreenInfo(OBDisplay, i)->colormap,
75 static void allocate(OtkColor *self) {
78 // allocate color from rgb values
79 xcol.red = self->red | self->red << 8;
80 xcol.green = self->green | self->green << 8;
81 xcol.blue = self->blue | self->blue << 8;
84 if (!XAllocColor(OBDisplay->display,
85 OtkDisplay_ScreenInfo(OBDisplay, self->screen)->colormap,
87 fprintf(stderr, "OtkColor: color alloc error: rgb:%x/%x/%x\n",
88 self->red, self->green, self->blue);
92 self->pixel = xcol.pixel;
98 PyObject *OtkColor_FromRGB(int r, int g, int b, int screen)
100 OtkColor *self = PyObject_New(OtkColor, &OtkColor_Type);
103 assert(screen >= 0); assert(r >= 0); assert(g >= 0); assert(b >= 0);
104 assert(r <= 0xff); assert(g <= 0xff); assert(b <= 0xff);
106 if (!colorcache) colorcache = PyDict_New();
111 self->screen = screen;
113 // does this color already exist in the cache?
114 cached = PyDict_GetItem(colorcache, (PyObject*)self);
120 // add it to the cache
121 PyDict_SetItem(colorcache, (PyObject*)self, (PyObject*)self);
123 return (PyObject*)self;
126 PyObject *OtkColor_FromName(const char *name, int screen)
128 OtkColor *self = PyObject_New(OtkColor, &OtkColor_Type);
131 assert(screen >= 0); assert(name);
133 if (!colorcache) colorcache = PyDict_New();
138 self->screen = screen;
140 parseColorName(self, name);
142 // does this color already exist in the cache?
143 cached = PyDict_GetItem(colorcache, (PyObject*)self);
149 // add it to the cache
150 PyDict_SetItem(colorcache, (PyObject*)self, (PyObject*)self);
152 return (PyObject*)self;
155 void OtkColor_CleanupColorCache()
162 static void otkcolor_dealloc(OtkColor* self)
164 // when this is called, the color has already been cleaned out of the cache
165 PyObject_Del((PyObject*)self);
168 static int otkcolor_compare(OtkColor *c1, OtkColor *c2)
171 unsigned long p1, p2;
173 p1 = c1->red << 16 | c1->green << 8 | c1->blue;
174 p2 = c2->red << 16 | c2->green << 8 | c2->blue;
185 static PyObject *otkcolor_repr(OtkColor *self)
187 return PyString_FromFormat("rgb:%x/%x/%x", self->red, self->green,
191 static long otkcolor_hash(OtkColor *self)
193 return self->screen << 24 | self->red << 16 | self->green << 8 | self->blue;
196 PyTypeObject OtkColor_Type = {
197 PyObject_HEAD_INIT(NULL)
202 (destructor)otkcolor_dealloc, /*tp_dealloc*/
206 (cmpfunc)otkcolor_compare, /*tp_compare*/
207 (reprfunc)otkcolor_repr, /*tp_repr*/
209 0, /*tp_as_sequence*/
211 (hashfunc)otkcolor_hash, /*tp_hash */