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

   1 /*  HomeBank -- Free, easy, personal accounting for everyone.
   2  *  Copyright (C) 1995-2018 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 "gtk-chart-colors.h"
  24
  25 G_BEGIN_DECLS
  26 #define GTK_TYPE_CHART            (gtk_chart_get_type ())
  27 #define GTK_CHART(obj)                    (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_CHART, GtkChart))
  28 #define GTK_CHART_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_CHART, GtkChartClass)
  29 #define GTK_IS_CHART(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CHART))
  30 #define GTK_IS_CHART_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CHART))
  31 #define GTK_CHART_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CHART, GtkChartClass))
  32
  33 typedef struct _GtkChart                GtkChart;
  34 typedef struct _GtkChartClass   GtkChartClass;
  35 //typedef struct _GtkChartPrivate       GtkChartPrivate;
  36
  37 typedef struct _ChartItem           ChartItem;
  38 typedef gchar (* GtkChartPrintIntFunc)    (gint value, gboolean minor);
  39 typedef gchar (* GtkChartPrintDoubleFunc) (gdouble value, gboolean minor);
  40
  41 /* = = = = = = = = = = */
  42 /* = = = = = = = = = = = = = = = = = = = = */
  43 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = */
  44 /* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = */
  45
  46 /* phi value */
  47 #define PHI 1.61803399
  48
  49
  50 /* default zoomx for charts */
  51 #define GTK_CHART_BARW                  41      //24
  52
  53 #define GTK_CHART_MINBARW                8      //4
  54 #define GTK_CHART_MAXBARW               41      //128
  55 #define GTK_CHART_SPANBARW              GTK_CHART_MAXBARW+1
  56
  57 #define GTK_CHART_MINRADIUS     64
  58
  59 #define CHART_BUFFER_LENGTH 128
  60
  61
  62 // char draw options
  63 #define CHART_PARAM_PIE_DONUT           TRUE
  64 #define CHART_PARAM_PIE_LINE            FALSE
  65 #define CHART_PARAM_PIE_MARK            FALSE
  66 #define CHART_PARAM_PIE_HOLEVALUE       0.5
  67
  68
  69
  70
  71 /* new stuff */
  72 #define CHART_MARGIN    12 //standard a4 margin is 18
  73 #define CHART_SPACING   6
  74
  75 #define CHART_LINE_SPACING  1.25
  76
  77 //#define PROP_SHOW_MINOR               6
  78 //#define PROP_SHOW_LEGEND      7
  79
  80 #define ROUNDHALF(x) floor(x *2) / 2
  81
  82
  83
  84 enum
  85 {
  86         CHART_TYPE_NONE,
  87         CHART_TYPE_COL,
  88
  89         CHART_TYPE_PIE,
  90         CHART_TYPE_LINE,
  91         CHART_TYPE_MAX
  92 };
  93
  94
  95 enum
  96 {
  97         LST_LEGEND_FAKE,
  98         LST_LEGEND_COLOR,
  99         LST_LEGEND_TITLE,
 100         LST_LEGEND_AMOUNT,
 101         LST_LEGEND_RATE,
 102         NUM_LST_LEGEND
 103 };
 104
 105
 106 struct _ChartItem
 107 {
 108         /* data part */
 109         gchar    *label;
 110         gdouble  serie1;
 111         gdouble  serie2;
 112         gdouble  rate;
 113
 114         /* draw stuffs */
 115         gchar    *legend;
 116         double   angle2;          /* rate for pie */
 117         double   height;   /* for column */
 118 };
 119
 120
 121 struct _GtkChart
 122 {
 123         //own widget here
 124
 125         /*< private >*/
 126         //GtkChartPrivate *priv;
 127
 128
 129         /* all below should be in priv normally */
 130         GtkBox                  hbox;
 131
 132         GtkWidget               *drawarea;
 133         GtkAdjustment   *adjustment;
 134         GtkWidget               *scrollbar;
 135
 136         GtkTreeModel    *model;
 137
 138         /* data storage */
 139         gint            nb_items;
 140         GArray          *items;
 141
 142         gchar           *title;
 143         gchar           *subtitle;
 144
 145         /* chart properties */
 146         gint            type;      // column/pie/line
 147
 148         gboolean        dual;
 149         gboolean        abs;
 150         gboolean        show_legend;
 151         gboolean        show_legend_wide;
 152         gboolean        show_over;
 153         gboolean        show_xval;
 154         gboolean        show_mono;
 155         gint            every_xval;
 156         guint32         kcur;
 157         gboolean        minor;
 158         gdouble         minor_rate;
 159         gchar           *minor_symbol;
 160
 161         /* color datas */
 162         GtkColorScheme color_scheme;
 163
 164         /* cairo default value */
 165         PangoFontDescription *pfd;
 166         gint                            pfd_size;
 167
 168         /* buffer surface */
 169         cairo_surface_t  *surface;
 170
 171         /* drawing datas */
 172         double  font_h;
 173         int             l, t, b, r, w, h;
 174         cairo_rectangle_t       graph;
 175         cairo_rectangle_t       legend;
 176
 177         /* legend dimension */
 178         double  label_w;
 179         double  legend_font_h;
 180         double  legend_label_w;
 181         double  legend_value_w;
 182         double  legend_rate_w;
 183
 184         /* zones height */
 185         double  title_zh;
 186         double  subtitle_zh, subtitle_y;
 187         double  header_zh, header_y;
 188         double  item_zh;
 189
 190
 191
 192         double          ox, oy;
 193         gint            lastx, lasty, lastactive;
 194         gint            lastpress_x, lastpress_y;
 195         gint            active;
 196         guint           timer_tag;
 197
 198         /* pie specifics */
 199         gdouble         total;
 200         gint            rayon, mark, left, top;
 201         gint            leg_nb_l, leg_width_l, leg_vspace_l;
 202         gint            leg_nb_r, leg_width_r, leg_vspace_r;
 203
 204         /* bar specifics */
 205         double  rawmin, rawmax, range, min, max, unit, minimum;
 206         gint    div;
 207         gint    visible;
 208
 209
 210
 211         double scale_x, scale_y, scale_w, scale_h;
 212         double item_x, item_y, item_w;
 213         double barw, blkw, posbarh, negbarh;
 214         double usrbarw;
 215
 216         gchar                   buffer1[CHART_BUFFER_LENGTH];
 217         gchar                   buffer2[CHART_BUFFER_LENGTH];
 218 };
 219
 220
 221 struct _GtkChartClass
 222 {
 223         GtkBoxClass parent_class;
 224
 225   /* Padding for future expansion */
 226   void (*_gtk_reserved1) (void);
 227   void (*_gtk_reserved2) (void);
 228   void (*_gtk_reserved3) (void);
 229   void (*_gtk_reserved4) (void);
 230 };
 231
 232 GType gtk_chart_get_type (void) G_GNUC_CONST;
 233
 234 /* public function */
 235 GtkWidget *gtk_chart_new(gint type);
 236
 237 void gtk_chart_set_type(GtkChart *chart, gint type);
 238 void gtk_chart_set_color_scheme(GtkChart * chart, gint colorscheme);
 239
 240 void gtk_chart_queue_redraw(GtkChart *chart);
 241
 242 void gtk_chart_set_datas(GtkChart *chart, GtkTreeModel *model, guint column, gchar *title, gchar *subtitle);
 243 void gtk_chart_set_dualdatas(GtkChart *chart, GtkTreeModel *model, guint column1, guint column2, gchar *title, gchar *subtitle);
 244
 245 void gtk_chart_set_minor_prefs(GtkChart * chart, gdouble rate, gchar *symbol);
 246 void gtk_chart_set_currency(GtkChart * chart, guint32 kcur);
 247
 248 void gtk_chart_set_overdrawn(GtkChart * chart, gdouble minimum);
 249 //void gtk_chart_set_every_xval(GtkChart * chart, gint decay);
 250 void gtk_chart_set_barw(GtkChart * chart, gdouble barw);
 251 void gtk_chart_set_showmono(GtkChart * chart, gboolean mono);
 252
 253 void gtk_chart_show_legend(GtkChart * chart, gboolean visible, gboolean showextracol);
 254 void gtk_chart_show_overdrawn(GtkChart * chart, gboolean visible);
 255 void gtk_chart_show_xval(GtkChart * chart, gboolean visible);
 256 void gtk_chart_show_minor(GtkChart * chart, gboolean minor);
 257 void gtk_chart_set_absolute(GtkChart * chart, gboolean abs);
 258
 259 G_END_DECLS
 260 #endif /* __GTK_CHART_H__ */