otk_c/font.c

   1 // -*- mode: C; indent-tabs-mode: nil; -*-
   2
   3 #include "../config.h"
   4 #include "font.h"
   5 #include "display.h"
   6 #include "color.h"
   7
   8 #include "../src/gettext.h"
   9
  10 static Bool xft_init = False;
  11 static const char *fallback = "fixed";
  12
  13 void OtkFont_Initialize()
  14 {
  15   if (!XftInit(0)) {
  16     printf(_("Couldn't initialize Xft version %d.%d.%d.\n\n"),
  17            XFT_MAJOR, XFT_MINOR, XFT_REVISION);
  18     exit(3);
  19   }
  20   printf(_("Using Xft %d.%d.%d.\n"), XFT_MAJOR, XFT_MINOR, XFT_REVISION);
  21   xft_init = True;
  22 }
  23
  24 PyObject *OtkFont_New(int screen, const char *fontstring, Bool shadow,
  25                       unsigned char offset, unsigned char tint)
  26 {
  27   OtkFont *self = PyObject_New(OtkFont, &OtkFont_Type);
  28
  29   assert(xft_init);
  30   assert(screen >= 0);
  31   assert(fontstring);
  32
  33   self->screen = screen;
  34   self->shadow = shadow;
  35   self->offset = offset;
  36   self->tint   = tint;
  37
  38   if (!(self->xftfont = XftFontOpenName(OBDisplay->display, screen,
  39                                         fontstring))) {
  40     printf(_("Unable to load font: %s"), fontstring);
  41     printf(_("Trying fallback font: %s\n"), fallback);
  42     if (!(self->xftfont =
  43           XftFontOpenName(OBDisplay->display, screen, fallback))) {
  44       printf(_("Unable to load font: %s"), fallback);
  45       printf(_("Aborting!.\n"));
  46
  47       exit(3); // can't continue without a font
  48     }
  49   }
  50
  51   return (PyObject*)self;
  52 }
  53
  54 int OtkFont_MeasureString(OtkFont *self, const char *string)//, Bool utf8)
  55 {
  56   XGlyphInfo info;
  57
  58 /*  if (utf8)*/
  59     XftTextExtentsUtf8(OBDisplay->display, self->xftfont,
  60                        (const FcChar8*)string, strlen(string), &info);
  61 /*  else
  62     XftTextExtents8(OBDisplay->display, self->xftfont,
  63     (const FcChar8*)string, strlen(string), &info);*/
  64
  65   return info.xOff + (self->shadow ? self->offset : 0);
  66 }
  67
  68 void OtkFont_DrawString(OtkFont *self, XftDraw *d, int x, int y,
  69                         OtkColor *color, const char *string)//, Bool utf8)
  70 {
  71   assert(self);
  72   assert(d);
  73
  74   if (self->shadow) {
  75     XftColor c;
  76     c.color.red = 0;
  77     c.color.green = 0;
  78     c.color.blue = 0;
  79     c.color.alpha = self->tint | self->tint << 8; // transparent shadow
  80     c.pixel = BlackPixel(OBDisplay->display, self->screen);
  81
  82 /*    if (utf8)*/
  83       XftDrawStringUtf8(d, &c, self->xftfont, x + self->offset,
  84                         self->xftfont->ascent + y + self->offset,
  85                         (const FcChar8*)string, strlen(string));
  86 /*    else
  87       XftDrawString8(d, &c, self->xftfont, x + self->offset,
  88                      self->xftfont->ascent + y + self->offset,
  89                      (const FcChar8*)string, strlen(string));*/
  90   }
  91
  92   XftColor c;
  93   c.color.red   = color->red   | color->red   << 8;
  94   c.color.green = color->green | color->green << 8;
  95   c.color.blue  = color->blue  | color->blue  << 8;
  96   c.pixel = color->pixel;
  97   c.color.alpha = 0xff | 0xff << 8; // no transparency in BColor yet
  98
  99 /*  if (utf8)*/
 100     XftDrawStringUtf8(d, &c, self->xftfont, x, self->xftfont->ascent + y,
 101                       (const FcChar8*)string, strlen(string));
 102 /*  else
 103     XftDrawString8(d, &c, self->xftfont, x, self->xftfont->ascent + y,
 104     (const FcChar8*)string, strlen(string));*/
 105 }
 106
 107
 108
 109
 110 static PyObject *otkfont_measurestring(OtkFont* self, PyObject* args)
 111 {
 112   char *s;
 113
 114   if (!PyArg_ParseTuple(args, "s", &s))
 115     return NULL;
 116   return PyInt_FromLong(OtkFont_MeasureString(self, s));
 117 }
 118
 119 static PyMethodDef get_methods[] = {
 120   {"measureString", (PyCFunction)otkfont_measurestring, METH_VARARGS,
 121    "Measure the length of a string with a font."},
 122   {NULL, NULL, 0, NULL}
 123 };
 124
 125
 126 static void otkfont_dealloc(OtkFont* self)
 127 {
 128   // this is always set. cuz if it failed.. the app would exit!
 129   XftFontClose(OBDisplay->display, self->xftfont);
 130   PyObject_Del((PyObject*)self);
 131 }
 132
 133 static PyObject *otkfont_getattr(PyObject *obj, char *name)
 134 {
 135   return Py_FindMethod(get_methods, obj, name);
 136 }
 137
 138 PyTypeObject Otkfont_Type = {
 139   PyObject_HEAD_INIT(NULL)
 140   0,
 141   "OtkFont",
 142   sizeof(OtkFont),
 143   0,
 144   (destructor)otkfont_dealloc,  /*tp_dealloc*/
 145   0,                            /*tp_print*/
 146   otkfont_getattr,              /*tp_getattr*/
 147   0,                            /*tp_setattr*/
 148   0,                            /*tp_compare*/
 149   0,                            /*tp_repr*/
 150   0,                            /*tp_as_number*/
 151   0,                            /*tp_as_sequence*/
 152   0,                            /*tp_as_mapping*/
 153   0,                            /*tp_hash */
 154 };