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1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * | |
6 | * This program 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 | * 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 | |
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, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef _VIKING_VIEWPORT_H | |
23 | #define _VIKING_VIEWPORT_H | |
24 | /* Requires <gtk/gtk.h> or glib, and coords.h*/ | |
25 | ||
26 | #include <glib.h> | |
27 | #include <glib-object.h> | |
28 | #include <gtk/gtkdrawingarea.h> | |
29 | ||
a25c4c50 GB |
30 | #include "vikcoord.h" |
31 | ||
eba605f5 | 32 | |
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33 | G_BEGIN_DECLS |
34 | ||
eba605f5 | 35 | |
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36 | #define VIK_VIEWPORT_TYPE (vik_viewport_get_type ()) |
37 | #define VIK_VIEWPORT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), VIK_VIEWPORT_TYPE, VikViewport)) | |
38 | #define VIK_VIEWPORT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), VIK_VIEWPORT_TYPE, VikViewportClass)) | |
39 | #define IS_VIK_VIEWPORT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), VIK_VIEWPORT_TYPE)) | |
40 | #define IS_VIK_VIEWPORT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), VIK_VIEWPORT_TYPE)) | |
41 | ||
42 | #define VIK_VIEWPORT_MAX_ZOOM 8192.0 | |
43 | #define VIK_VIEWPORT_MIN_ZOOM 0.125 | |
44 | ||
45 | /* used for coord to screen etc, screen to coord */ | |
46 | #define VIK_VIEWPORT_UTM_WRONG_ZONE -9999999 | |
47 | #define VIK_VIEWPORT_OFF_SCREEN_DOUBLE -9999999.9 | |
48 | ||
eba605f5 AF |
49 | |
50 | /* Glib type inheritance and initialization */ | |
50a14534 EB |
51 | typedef struct _VikViewport VikViewport; |
52 | typedef struct _VikViewportClass VikViewportClass; | |
53 | ||
54 | struct _VikViewportClass | |
55 | { | |
56 | GtkDrawingAreaClass drawing_area_class; | |
57 | }; | |
50a14534 EB |
58 | GType vik_viewport_get_type (); |
59 | ||
50a14534 | 60 | |
eba605f5 AF |
61 | /* Viking initialization */ |
62 | VikViewport *vik_viewport_new (); | |
63 | void vik_viewport_configure_manually ( VikViewport *vvp, gint width, guint height ); /* for off-screen viewports */ | |
64 | gboolean vik_viewport_configure ( VikViewport *vp ); | |
35c7c0ba | 65 | |
50a14534 | 66 | |
eba605f5 AF |
67 | /* coordinate transformations */ |
68 | void vik_viewport_screen_to_coord ( VikViewport *vvp, int x, int y, VikCoord *coord ); | |
69 | void vik_viewport_coord_to_screen ( VikViewport *vvp, const VikCoord *coord, int *x, int *y ); | |
50a14534 | 70 | |
50a14534 | 71 | |
eba605f5 | 72 | /* viewport scale */ |
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73 | void vik_viewport_set_ympp ( VikViewport *vvp, gdouble ympp ); |
74 | void vik_viewport_set_xmpp ( VikViewport *vvp, gdouble xmpp ); | |
75 | gdouble vik_viewport_get_ympp ( VikViewport *vvp ); | |
76 | gdouble vik_viewport_get_xmpp ( VikViewport *vvp ); | |
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77 | void vik_viewport_set_zoom ( VikViewport *vvp, gdouble mpp ); |
78 | gdouble vik_viewport_get_zoom ( VikViewport *vvp ); | |
79 | void vik_viewport_zoom_in ( VikViewport *vvp ); | |
80 | void vik_viewport_zoom_out ( VikViewport *vvp ); | |
81 | ||
50a14534 | 82 | |
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83 | /* viewport position */ |
84 | const VikCoord *vik_viewport_get_center ( VikViewport *vvp ); | |
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85 | void vik_viewport_set_center_coord ( VikViewport *vvp, const VikCoord *coord ); |
86 | void vik_viewport_set_center_screen ( VikViewport *vvp, int x, int y ); | |
87 | void vik_viewport_center_for_zonen ( VikViewport *vvp, struct UTM *center, int zone); | |
88 | gchar vik_viewport_leftmost_zone ( VikViewport *vvp ); | |
89 | gchar vik_viewport_rightmost_zone ( VikViewport *vvp ); | |
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90 | void vik_viewport_set_center_utm ( VikViewport *vvp, const struct UTM *utm ); |
91 | void vik_viewport_set_center_latlon ( VikViewport *vvp, const struct LatLon *ll ); | |
eba605f5 AF |
92 | void vik_viewport_corners_for_zonen ( VikViewport *vvp, int zone, VikCoord *ul, VikCoord *br ); |
93 | void vik_viewport_get_min_max_lat_lon ( VikViewport *vp, gdouble *min_lat, gdouble *max_lat, gdouble *min_lon, gdouble *max_lon ); | |
50a14534 | 94 | |
50a14534 | 95 | |
eba605f5 | 96 | /* drawmode management */ |
a59e6eb9 GB |
97 | typedef enum { |
98 | VIK_VIEWPORT_DRAWMODE_UTM=0, | |
99 | VIK_VIEWPORT_DRAWMODE_EXPEDIA, | |
a59e6eb9 | 100 | VIK_VIEWPORT_DRAWMODE_MERCATOR, |
8f661d80 | 101 | VIK_VIEWPORT_NUM_DRAWMODES /*< skip >*/ |
a59e6eb9 | 102 | } VikViewportDrawMode; |
50a14534 | 103 | |
eba605f5 AF |
104 | VikCoordMode vik_viewport_get_coord_mode ( const VikViewport *vvp ); |
105 | gboolean vik_viewport_is_one_zone ( VikViewport *vvp ); | |
a59e6eb9 | 106 | const gchar *vik_viewport_get_drawmode_name(VikViewport *vv, VikViewportDrawMode mode); |
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107 | void vik_viewport_set_drawmode ( VikViewport *vvp, VikViewportDrawMode drawmode ); |
108 | VikViewportDrawMode vik_viewport_get_drawmode ( VikViewport *vvp ); | |
eba605f5 | 109 | /* Do not forget to update vik_viewport_get_drawmode_name() if you modify VikViewportDrawMode */ |
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110 | |
111 | ||
eba605f5 | 112 | /* Triggers */ |
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113 | void vik_viewport_set_trigger ( VikViewport *vp, gpointer trigger ); |
114 | gpointer vik_viewport_get_trigger ( VikViewport *vp ); | |
115 | void vik_viewport_snapshot_save ( VikViewport *vp ); | |
116 | void vik_viewport_snapshot_load ( VikViewport *vp ); | |
117 | void vik_viewport_set_half_drawn(VikViewport *vp, gboolean half_drawn); | |
118 | gboolean vik_viewport_get_half_drawn( VikViewport *vp ); | |
119 | ||
120 | ||
eba605f5 AF |
121 | /*************************************************************************************************** |
122 | * Drawing-related operations | |
123 | ***************************************************************************************************/ | |
124 | ||
125 | /* Viewport buffer management/drawing to screen */ | |
126 | GdkPixmap *vik_viewport_get_pixmap ( VikViewport *vvp ); /* get pointer to drawing buffer */ | |
127 | void vik_viewport_sync ( VikViewport *vvp ); /* draw buffer to window */ | |
128 | void vik_viewport_pan_sync ( VikViewport *vvp, gint x_off, gint y_off ); | |
129 | void vik_viewport_clear ( VikViewport *vvp ); | |
130 | void vik_viewport_draw_pixbuf_with_alpha ( VikViewport *vvp, GdkPixbuf *pixbuf, gint alpha, | |
131 | gint src_x, gint src_y, gint dest_x, gint dest_y, gint w, gint h ); | |
132 | void vik_viewport_draw_pixbuf ( VikViewport *vvp, GdkPixbuf *pixbuf, gint src_x, gint src_y, | |
133 | gint dest_x, gint dest_y, gint w, gint h ); | |
134 | gint vik_viewport_get_width ( VikViewport *vvp ); | |
135 | gint vik_viewport_get_height ( VikViewport *vvp ); | |
136 | ||
137 | /* Viewport features */ | |
138 | void vik_viewport_draw_scale ( VikViewport *vvp ); | |
139 | void vik_viewport_set_draw_scale ( VikViewport *vvp, gboolean draw_scale ); | |
140 | gboolean vik_viewport_get_draw_scale ( VikViewport *vvp ); | |
141 | void vik_viewport_draw_centermark ( VikViewport *vvp ); | |
142 | void vik_viewport_set_draw_centermark ( VikViewport *vvp, gboolean draw_centermark ); | |
143 | gboolean vik_viewport_get_draw_centermark ( VikViewport *vvp ); | |
144 | ||
145 | /* Color/graphics context management */ | |
146 | void vik_viewport_set_background_color ( VikViewport *vvp, const gchar *color ); | |
147 | const gchar *vik_viewport_get_background_color ( VikViewport *vvp ); | |
148 | GdkColor *vik_viewport_get_background_gdkcolor ( VikViewport *vvp ); | |
149 | void vik_viewport_set_background_gdkcolor ( VikViewport *vvp, GdkColor * ); | |
150 | void vik_gc_get_fg_color ( GdkGC *gc, GdkColor *dest ); /* warning: could be slow, don't use obsessively */ | |
151 | GdkGC *vik_viewport_new_gc ( VikViewport *vvp, const gchar *colorname, gint thickness ); | |
152 | GdkGC *vik_viewport_new_gc_from_color ( VikViewport *vvp, GdkColor *color, gint thickness ); | |
153 | GdkFunction vik_gc_get_function ( GdkGC *gc ); | |
154 | ||
155 | /* Drawing primitives */ | |
156 | void a_viewport_clip_line ( gint *x1, gint *y1, gint *x2, gint *y2 ); /* run this before drawing a line. vik_viewport_draw_line runs it for you */ | |
157 | void vik_viewport_draw_line ( VikViewport *vvp, GdkGC *gc, gint x1, gint y1, gint x2, gint y2 ); | |
158 | void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 ); | |
159 | void vik_viewport_draw_string ( VikViewport *vvp, GdkFont *font, GdkGC *gc, gint x1, gint y1, const gchar *string ); | |
160 | void vik_viewport_draw_arc ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x, gint y, gint width, gint height, gint angle1, gint angle2 ); | |
161 | void vik_viewport_draw_polygon ( VikViewport *vvp, GdkGC *gc, gboolean filled, GdkPoint *points, gint npoints ); | |
162 | void vik_viewport_draw_layout ( VikViewport *vvp, GdkGC *gc, gint x, gint y, PangoLayout *layout ); | |
163 | ||
164 | ||
165 | ||
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166 | G_END_DECLS |
167 | ||
168 | #endif |