src/calf/custom_ctl.h

   1 /* Calf DSP Library
   2  * A few useful widgets - a line graph, a knob, a VU meter - Panama!
   3  *
   4  * Copyright (C) 2008 Krzysztof Foltman
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General
  17  * Public License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21 #ifndef __CALF_CUSTOM_CTL
  22 #define __CALF_CUSTOM_CTL
  23
  24 #include <gtk/gtk.h>
  25 #include <calf/giface.h>
  26
  27 G_BEGIN_DECLS
  28
  29 #define CALF_TYPE_LINE_GRAPH           (calf_line_graph_get_type())
  30 #define CALF_LINE_GRAPH(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), CALF_TYPE_LINE_GRAPH, CalfLineGraph))
  31 #define CALF_IS_LINE_GRAPH(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CALF_TYPE_LINE_GRAPH))
  32 #define CALF_LINE_GRAPH_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST ((klass),  CALF_TYPE_LINE_GRAPH, CalfLineGraphClass))
  33 #define CALF_IS_LINE_GRAPH_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE ((klass),  CALF_TYPE_LINE_GRAPH))
  34 #define CALF_LINE_GRAPH_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),  CALF_TYPE_LINE_GRAPH, CalfLineGraphClass))
  35
  36 struct CalfLineGraph
  37 {
  38     GtkDrawingArea parent;
  39     calf_plugins::line_graph_iface *source;
  40     int source_id;
  41     bool is_square;
  42     cairo_surface_t *cache_surface;
  43     //GdkPixmap *cache_pixmap;
  44     int last_generation;
  45 };
  46
  47 struct CalfLineGraphClass
  48 {
  49     GtkDrawingAreaClass parent_class;
  50 };
  51
  52 extern GtkWidget *calf_line_graph_new();
  53
  54 extern GType calf_line_graph_get_type();
  55
  56 extern void calf_line_graph_set_square(CalfLineGraph *graph, bool is_square);
  57
  58 extern int calf_line_graph_update_if(CalfLineGraph *graph, int generation);
  59
  60 #define CALF_TYPE_VUMETER           (calf_vumeter_get_type())
  61 #define CALF_VUMETER(obj)           (G_TYPE_CHECK_INSTANCE_CAST ((obj), CALF_TYPE_VUMETER, CalfVUMeter))
  62 #define CALF_IS_VUMETER(obj)        (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CALF_TYPE_VUMETER))
  63 #define CALF_VUMETER_CLASS(klass)   (G_TYPE_CHECK_CLASS_CAST ((klass),  CALF_TYPE_VUMETER, CalfVUMeterClass))
  64 #define CALF_IS_VUMETER_CLASS(obj)  (G_TYPE_CHECK_CLASS_TYPE ((klass),  CALF_TYPE_VUMETER))
  65 #define CALF_VUMETER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj),  CALF_TYPE_VUMETER, CalfVUMeterClass))
  66
  67 enum CalfVUMeterMode
  68 {
  69     VU_STANDARD,
  70     VU_MONOCHROME,
  71     VU_MONOCHROME_REVERSE
  72 };
  73
  74 struct CalfVUMeter
  75 {
  76     GtkDrawingArea parent;
  77     CalfVUMeterMode mode;
  78     float value;
  79     cairo_surface_t *cache_surface;
  80 };
  81
  82 struct CalfVUMeterClass
  83 {
  84     GtkDrawingAreaClass parent_class;
  85 };
  86
  87 extern GtkWidget *calf_vumeter_new();
  88 extern GType calf_vumeter_get_type();
  89 extern void calf_vumeter_set_value(CalfVUMeter *meter, float value);
  90 extern float calf_vumeter_get_value(CalfVUMeter *meter);
  91 extern void calf_vumeter_set_mode(CalfVUMeter *meter, CalfVUMeterMode mode);
  92 extern CalfVUMeterMode calf_vumeter_get_mode(CalfVUMeter *meter);
  93
  94 #define CALF_TYPE_KNOB          (calf_knob_get_type())
  95 #define CALF_KNOB(obj)          (G_TYPE_CHECK_INSTANCE_CAST ((obj), CALF_TYPE_KNOB, CalfKnob))
  96 #define CALF_IS_KNOB(obj)       (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CALF_TYPE_KNOB))
  97 #define CALF_KNOB_CLASS(klass)  (G_TYPE_CHECK_CLASS_CAST ((klass),  CALF_TYPE_KNOB, CalfKnobClass))
  98 #define CALF_IS_KNOB_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass),  CALF_TYPE_KNOB))
  99
 100 struct CalfKnob
 101 {
 102     GtkRange parent;
 103     int knob_type;
 104     double start_x, start_y, start_value, last_y;
 105 };
 106
 107 struct CalfKnobClass
 108 {
 109     GtkRangeClass parent_class;
 110     GdkPixbuf *knob_image;
 111 };
 112
 113 extern GtkWidget *calf_knob_new();
 114 extern GtkWidget *calf_knob_new_with_adjustment(GtkAdjustment *_adjustment);
 115
 116 extern GType calf_knob_get_type();
 117
 118 G_END_DECLS
 119
 120 class cairo_impl: public calf_plugins::cairo_iface
 121 {
 122 public:
 123     cairo_t *context;
 124     virtual void set_source_rgba(float r, float g, float b, float a = 1.f) { cairo_set_source_rgba(context, r, g, b, a); }
 125     virtual void set_line_width(float width) { cairo_set_line_width(context, width); }
 126 };
 127
 128 #endif