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

   1 /*  HomeBank -- Free, easy, personal accounting for everyone.
   2  *  Copyright (C) 1995-2017 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                  24
  52
  53 #define GTK_CHART_MINBARW                4
  54 #define GTK_CHART_MAXBARW               128
  55
  56 #define GTK_CHART_MINRADIUS     64
  57
  58
  59 #define CHART_BUFFER_LENGTH 128
  60
  61 // for cairo pie
  62 #define PIE_LINE_SLICE 0
  63 #define SOFT_LIGHT  0
  64 #define GRADIENT        0
  65 #define CHART_PIE_DONUT  1
  66
  67
  68 /* new stuff */
  69 #define CHART_MARGIN    18 //standard a4 margin
  70 #define CHART_SPACING   6
  71
  72 //#define PROP_SHOW_MINOR               6
  73 //#define PROP_SHOW_LEGEND      7
  74
  75 enum
  76 {
  77         CHART_TYPE_NONE,
  78         CHART_TYPE_COL,
  79         CHART_TYPE_PIE,
  80         CHART_TYPE_LINE,
  81         CHART_TYPE_MAX
  82 };
  83
  84
  85 enum
  86 {
  87         LST_LEGEND_FAKE,
  88         LST_LEGEND_COLOR,
  89         LST_LEGEND_TITLE,
  90         LST_LEGEND_AMOUNT,
  91         LST_LEGEND_RATE,
  92         NUM_LST_LEGEND
  93 };
  94
  95
  96 struct _ChartItem
  97 {
  98         /* data part */
  99         gchar    *label;
 100         gdouble  serie1;
 101         gdouble  serie2;
 102         gdouble  rate;
 103
 104         /* draw stuffs */
 105         gchar    *legend;
 106         double   angle2;          /* rate for pie */
 107         double   height;   /* for column */
 108 };
 109
 110
 111 struct _GtkChart
 112 {
 113         //own widget here
 114
 115         /*< private >*/
 116         //GtkChartPrivate *priv;
 117
 118
 119         /* all below should be in priv normally */
 120         GtkBox                  hbox;
 121
 122         GtkWidget               *drawarea;
 123         GtkAdjustment   *adjustment;
 124         GtkWidget               *scrollbar;
 125
 126         GtkWidget               *scrollwin;
 127         GtkWidget               *treeview;
 128         GtkTreeModel    *legend;
 129
 130         /* data storage */
 131         gint            nb_items;
 132         GArray          *items;
 133
 134         gchar           *title;
 135         gchar           *subtitle;
 136
 137         /* chart properties */
 138         gint            type;
 139         gboolean        dual;
 140         gboolean        abs;
 141         gboolean        show_over;
 142         gboolean        show_xval;
 143         gboolean        show_mono;
 144         gint            every_xval;
 145         guint32         kcur;
 146         gboolean        minor;
 147         gdouble         minor_rate;
 148         gchar           *minor_symbol;
 149
 150         /* color datas */
 151         GtkColorScheme color_scheme;
 152
 153         /* cairo default value */
 154         PangoFontDescription *pfd;
 155         gint                            pfd_size;
 156
 157         /* buffer surface */
 158         cairo_surface_t  *surface;
 159
 160         /* draw area coordinates */
 161         double  l, t, b, r, w, h;
 162         /* our drawing rectangle with margin */
 163         double          label_w;
 164         double          legend_w;
 165
 166         /* zones height */
 167         double          title_zh;
 168         double  subtitle_zh, subtitle_y;
 169
 170
 171         double          ox, oy;
 172         gint            lastx, lasty, lastactive;
 173         gint            lastpress_x, lastpress_y;
 174         gint            active;
 175         guint           timer_tag;
 176
 177         /* pie specifics */
 178         gdouble         total;
 179         gint            rayon, left, top;
 180
 181         /* bar specifics */
 182         double  rawmin, rawmax, range, min, max, unit, minimum;
 183         gint    div;
 184         gint    visible;
 185
 186         double font_h;
 187
 188         double scale_x, scale_y, scale_w, scale_h;
 189         double graph_x, graph_y, graph_width, graph_height;     //graph dimension
 190         double barw, blkw, posbarh, negbarh;
 191
 192         gchar                   buffer1[CHART_BUFFER_LENGTH];
 193         gchar                   buffer2[CHART_BUFFER_LENGTH];
 194 };
 195
 196 struct _GtkChartClass
 197 {
 198         GtkBoxClass parent_class;
 199
 200   /* Padding for future expansion */
 201   void (*_gtk_reserved1) (void);
 202   void (*_gtk_reserved2) (void);
 203   void (*_gtk_reserved3) (void);
 204   void (*_gtk_reserved4) (void);
 205 };
 206
 207 GType gtk_chart_get_type (void) G_GNUC_CONST;
 208
 209 /* public function */
 210 GtkWidget *gtk_chart_new(gint type);
 211
 212 void gtk_chart_set_type(GtkChart *chart, gint type);
 213 void gtk_chart_set_color_scheme(GtkChart * chart, gint colorscheme);
 214
 215 void gtk_chart_queue_redraw(GtkChart *chart);
 216
 217 void gtk_chart_set_datas(GtkChart *chart, GtkTreeModel *model, guint column, gchar *title, gchar *subtitle);
 218 void gtk_chart_set_dualdatas(GtkChart *chart, GtkTreeModel *model, guint column1, guint column2, gchar *title, gchar *subtitle);
 219
 220 void gtk_chart_set_minor_prefs(GtkChart * chart, gdouble rate, gchar *symbol);
 221 void gtk_chart_set_currency(GtkChart * chart, guint32 kcur);
 222
 223 void gtk_chart_set_overdrawn(GtkChart * chart, gdouble minimum);
 224 void gtk_chart_set_every_xval(GtkChart * chart, gint decay);
 225 void gtk_chart_set_barw(GtkChart * chart, gdouble barw);
 226 void gtk_chart_set_showmono(GtkChart * chart, gboolean mono);
 227
 228 void gtk_chart_show_legend(GtkChart * chart, gboolean visible, gboolean showextracol);
 229 void gtk_chart_show_overdrawn(GtkChart * chart, gboolean visible);
 230 void gtk_chart_show_xval(GtkChart * chart, gboolean visible);
 231 void gtk_chart_show_minor(GtkChart * chart, gboolean minor);
 232 void gtk_chart_set_absolute(GtkChart * chart, gboolean abs);
 233
 234 G_END_DECLS
 235 #endif /* __GTK_CHART_H__ */