sushivision/slider.h

   1 /*
   2  *
   3  *     sushivision copyright (C) 2006-2007 Monty <monty@xiph.org>
   4  *
   5  *  sushivision is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  sushivision is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with sushivision; see the file COPYING.  If not, write to the
  17  *  Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *
  19  *
  20  */
  21
  22 #include <sys/types.h>
  23
  24 struct _sv_slider {
  25   GtkWidget **slices;
  26   int num_slices;
  27   int realized;
  28   int flip; // native is horizontal
  29
  30   u_int32_t *backdata;
  31   cairo_surface_t *background;
  32   cairo_surface_t *foreground;
  33   int w;
  34   int h;
  35   int gradient;
  36   int xpad;
  37   int ypad;
  38
  39   char **label;
  40   float *label_vals;
  41   int labels;
  42   int neg;
  43   int flags;
  44
  45   // computation helpers
  46   float lodel;
  47   float idelrange;
  48
  49   float quant_num;
  50   float quant_denom;
  51 };
  52
  53 typedef struct {
  54   int n;
  55   int neg;
  56   float al;
  57   float lo;
  58   float hi;
  59   float *vals;
  60   float *muls;
  61   float *offs;
  62 } slider_map_t;
  63
  64 #define _SV_SLIDER_FLAG_INDEPENDENT_MIDDLE 0x1
  65 #define _SV_SLIDER_FLAG_VERTICAL 0x80
  66
  67 extern void _sv_slider_realize(_sv_slider_t *s);
  68 extern void _sv_slider_draw(_sv_slider_t *s);
  69 extern void _sv_slider_expose_slice(_sv_slider_t *s, int slicenum);
  70 extern void _sv_slider_expose(_sv_slider_t *s);
  71 extern void _sv_slider_size_request_slice(_sv_slider_t *s,GtkRequisition *requisition);
  72 extern float _sv_slider_pixel_to_val(_sv_slider_t *slider,float x);
  73 extern float _sv_slider_pixel_to_del(_sv_slider_t *slider,float x);
  74 extern float _sv_slider_pixel_to_mapdel(_sv_slider_t *s,float x);
  75 extern float _sv_slider_val_to_del(_sv_slider_t *slider,float v);
  76 extern float _sv_slider_val_to_mapdel(_sv_slider_t *slider,float v);
  77 extern void _sv_slider_vals_bound(_sv_slider_t *slider,int slicenum);
  78 extern int _sv_slider_lightme(_sv_slider_t *slider,int slicenum,int x,int y);
  79 extern void _sv_slider_unlight(_sv_slider_t *slider);
  80 extern void _sv_slider_button_press(_sv_slider_t *slider,int slicenum,int x,int y);
  81 extern void _sv_slider_button_release(_sv_slider_t *s,int slicenum,int x,int y);
  82 extern void _sv_slider_motion(_sv_slider_t *s,int slicenum,int x,int y);
  83 extern gboolean _sv_slider_key_press(_sv_slider_t *slider,GdkEventKey *event,int slicenum);
  84 extern _sv_slider_t *_sv_slider_new(_sv_slice_t **slices, int num_slices,
  85                           char **labels, float *label_vals, int num_labels,
  86                           unsigned flags);
  87 extern void _sv_slider_set_thumb_active(_sv_slider_t *s, int thumbnum, int activep);
  88 extern void _sv_slider_set_gradient(_sv_slider_t *s, int m);
  89 extern float _sv_slider_get_value(_sv_slider_t *s, int thumbnum);
  90 extern void _sv_slider_set_value(_sv_slider_t *s, int thumbnum, float v);
  91 extern float _sv_slider_del_to_val(_sv_slider_t *s, float del);
  92 extern void _sv_slider_set_quant(_sv_slider_t *s, float n, float d);
  93
  94 extern void _sv_slider_print(_sv_slider_t *s, cairo_t *c, int w, int h);
  95 extern float _sv_slider_print_height(_sv_slider_t *s);
  96 extern void _sv_slidermap_init(slider_map_t *m, sv_slider_t *s);
  97 extern void _sv_slidermap_partial_update(slider_map_t *m, sv_slider_t *s);
  98 extern void _sv_slidermap_clear(slider_map_t *m);
  99 extern float _sv_slidermap_to_mapdel(slider_map_t *s,float v);
 100