Dogcows Code - chaz/homebank/blob - src/gtk-chart.h

   1 /*  HomeBank -- Free, easy, personal accounting for everyone.
   2  *  Copyright (C) 1995-2014 Maxime DOYEN
   3  *
   4  *  This file is part of HomeBank.
   5  *
   6  *  HomeBank is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  HomeBank 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
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef __GTK_CHART_H__
  21 #define __GTK_CHART_H__
  22
  23 #include <glib.h>
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26 #include <cairo.h>
  27 #include <math.h>
  28
  29 G_BEGIN_DECLS
  30 #define GTK_TYPE_CHART            (gtk_chart_get_type ())
  31 #define GTK_CHART(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CHART, GtkChart))
  32 #define GTK_CHART_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CHART, GtkChartClass)
  33 #define GTK_IS_CHART(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CHART))
  34 #define GTK_IS_CHART_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CHART))
  35 #define GTK_CHART_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CHART, GtkChartClass))
  36
  37 typedef struct _GtkChart                GtkChart;
  38 typedef struct _GtkChartClass   GtkChartClass;
  39 //typedef struct _GtkChartPrivate       GtkChartPrivate;
  40
  41 typedef struct _ChartItem           ChartItem;
  42 typedef gchar (* GtkChartPrintIntFunc)    (gint value, gboolean minor);
  43 typedef gchar (* GtkChartPrintDoubleFunc) (gdouble value, gboolean minor);
  44
  45 /* = = = = = = = = = = */
  46 /* = = = = = = = = = = = = = = = = = = = = */
  47 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = */
  48 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = */
  49
  50 /* phi value */
  51 #define PHI 1.61803399
  52
  53
  54 /* default zoomx for charts */
  55 #define GTK_CHART_BARW                  24
  56 #define GTK_CHART_MINBARW                8
  57 #define GTK_CHART_MAXBARW               64
  58 #define GTK_CHART_MINRADIUS     64
  59
  60
  61 #define CHART_BUFFER_LENGTH 128
  62
  63 // for cairo pie
  64 #define PIE_LINE_SLICE 0
  65 #define SOFT_LIGHT  0
  66 #define GRADIENT        0
  67 #define CHART_PIE_DONUT  1
  68
  69
  70 /* new stuff */
  71 #define CHART_MARGIN    18 //standard a4 margin
  72 #define CHART_SPACING   6
  73
  74 //#define PROP_SHOW_MINOR               6
  75 //#define PROP_SHOW_LEGEND      7
  76
  77 enum
  78 {
  79         CHART_TYPE_COL,
  80         CHART_TYPE_PIE,
  81         CHART_TYPE_LINE,
  82         CHART_TYPE_MAX
  83 };
  84
  85
  86 enum
  87 {
  88         LST_LEGEND_FAKE,
  89         LST_LEGEND_COLOR,
  90         LST_LEGEND_TITLE,
  91         LST_LEGEND_AMOUNT,
  92         LST_LEGEND_RATE,
  93         NUM_LST_LEGEND
  94 };
  95
  96
  97 struct _ChartItem
  98 {
  99         /* data part */
 100         gchar    *label;
 101         gdouble  serie1;
 102         gdouble  serie2;
 103         gdouble  rate;
 104
 105         /* cairo part */
 106         gchar    *legend;
 107         double   angle2;          /* rate for pie */
 108         double   height;   /* for column */
 109 };
 110
 111
 112 struct _GtkChart
 113 {
 114         //own widget here
 115
 116         /*< private >*/
 117         //GtkChartPrivate *priv;
 118
 119
 120         /* all below should be in priv normally */
 121         GtkHBox                 hbox;
 122
 123         GtkWidget               *drawarea;
 124         GtkAdjustment   *adjustment;
 125         GtkWidget               *scrollbar;
 126
 127         GtkWidget               *scrollwin;
 128         GtkWidget               *treeview;
 129         GtkTreeModel    *legend;
 130
 131         /* data storage */
 132         gint            nb_items;
 133         GArray          *items;
 134
 135         gchar           *title;
 136         gchar           *subtitle;
 137
 138         /* chart properties */
 139         gint            type;
 140         gboolean        dual;
 141         gboolean        abs;
 142         gboolean        show_over;
 143         gboolean        show_xval;
 144         gint            every_xval;
 145         //guint32               kcur;
 146         gboolean        minor;
 147         gdouble         minor_rate;
 148         gchar           *minor_symbol;
 149
 150         /* color datas */
 151         struct rgbcol           *colors;
 152         gint    nb_cols;
 153         gint    cs_red, cs_green, cs_blue, cs_yellow;
 154
 155         /* buffer surface */
 156         cairo_surface_t  *surface;
 157
 158         /* draw area coordinates */
 159         double  l, t, b, r, w, h;
 160         /* our drawing rectangle with margin */
 161         double          legend_w;
 162
 163         /* zones height */
 164         double          title_zh;
 165         double  subtitle_zh, subtitle_y;
 166
 167
 168         double          ox, oy;
 169         gint            lastx, lasty, lastactive;
 170         gint            lastpress_x, lastpress_y;
 171         gint            active;
 172         guint           timer_tag;
 173
 174         /* pie specifics */
 175         gdouble         total;
 176         gint            rayon, left, top;
 177
 178         /* bar specifics */
 179         double  rawmin, rawmax, range, min, max, unit, minimum;
 180         gint    div;
 181         gint    visible;
 182
 183         double font_h;
 184
 185         double scale_x, scale_y, scale_w, scale_h;
 186         double graph_x, graph_y, graph_width, graph_height;     //graph dimension
 187         double barw, blkw, posbarh, negbarh;
 188
 189         gchar                   buffer1[CHART_BUFFER_LENGTH];
 190         gchar                   buffer2[CHART_BUFFER_LENGTH];
 191 };
 192
 193 struct _GtkChartClass
 194 {
 195         GtkHBoxClass parent_class;
 196
 197   /* Padding for future expansion */
 198   void (*_gtk_reserved1) (void);
 199   void (*_gtk_reserved2) (void);
 200   void (*_gtk_reserved3) (void);
 201   void (*_gtk_reserved4) (void);
 202 };
 203
 204 GType gtk_chart_get_type (void) G_GNUC_CONST;
 205
 206 /* public function */
 207 GtkWidget *gtk_chart_new(gint type);
 208
 209 void gtk_chart_set_type(GtkChart *chart, gint type);
 210 void gtk_chart_set_color_scheme(GtkChart * chart, gint colorscheme);
 211
 212 void gtk_chart_queue_redraw(GtkChart *chart);
 213
 214 void gtk_chart_set_datas(GtkChart *chart, GtkTreeModel *model, guint column, gchar *title);
 215 void gtk_chart_set_dualdatas(GtkChart *chart, GtkTreeModel *model, guint column1, guint column2, gchar *title);
 216
 217 void gtk_chart_set_minor_prefs(GtkChart * chart, gdouble rate, gchar *symbol);
 218 //void gtk_chart_set_currency(GtkChart * chart, guint32 kcur);
 219
 220 void gtk_chart_set_overdrawn(GtkChart * chart, gdouble minimum);
 221 void gtk_chart_set_every_xval(GtkChart * chart, gint decay);
 222 void gtk_chart_set_barw(GtkChart * chart, gdouble barw);
 223
 224 void gtk_chart_show_legend(GtkChart * chart, gboolean visible, gboolean showextracol);
 225 void gtk_chart_show_overdrawn(GtkChart * chart, gboolean visible);
 226 void gtk_chart_show_xval(GtkChart * chart, gboolean visible);
 227 void gtk_chart_show_minor(GtkChart * chart, gboolean minor);
 228 void gtk_chart_set_absolute(GtkChart * chart, gboolean abs);
 229
 230 G_END_DECLS
 231 #endif /* __GTK_CHART_H__ */