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* with this program. If not, see <http://www.gnu.org/licenses/>. |
* with this program. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
*/ |
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#include "config.h" |
#include "config.h" |
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#include <stdlib.h> // abs |
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#include <math.h> // M_PI |
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/* parameters that can be overwritten from the config file: */ |
/* parameters that can be overwritten from the config file: */ |
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/* OSM_GPS_MAP_OSD_DIAMETER */ |
/* OSM_GPS_MAP_OSD_DIAMETER */ |
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#include <cairo.h> |
#include <cairo.h> |
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#include "osm-gps-map.h" |
#include "osm-gps-map.h" |
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#include "osm-gps-map-osd-classic.h" |
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//the osd controls |
//the osd controls |
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typedef struct { |
typedef struct { |
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GdkPixmap *backup; |
GdkPixmap *backup; |
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gint backup_x, backup_y; |
gint backup_x, backup_y; |
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cairo_surface_t *overlay; |
cairo_surface_t *overlay; |
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OsmGpsMapOsdGpsCallback cb; |
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gpointer data; |
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} osd_priv_t; |
} osd_priv_t; |
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/* the osd structure mainly contains various callbacks */ |
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/* required to draw and update the OSD */ |
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typedef struct { |
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void(enable_gps)(OsmGpsMap *, OsmGpsMapOsdGpsCallback, gpointer); |
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void(restore)(OsmGpsMap*); |
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void(draw)(OsmGpsMap *, gint, gint); |
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void(render)(OsmGpsMapPrivate *); |
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osd_button_t(*check)(gint, gint); /* check if x/y lies within OSD */ |
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void(free)(gpointer); |
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gpointer priv; |
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} osm_gps_map_osd_t; |
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static osm_gps_map_osd_t osd_classic = { |
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.restore = osm_gps_map_osd_restore, |
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.draw = osm_gps_map_osd_draw_controls, |
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.check = osm_gps_map_osd_check, |
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.render = osm_gps_map_osd_render, |
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.enable_gps = osm_gps_map_osd_enable_gps, |
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.free = osm_gps_map_osd_free, |
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.priv = NULL; |
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} |
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/* this is the only function that's externally visible */ |
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osm_gps_map_osd_t * |
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osm_gps_map_osd_classic_init(void) |
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{ |
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return osd_classic; |
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} |
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static void |
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osm_gps_map_osd_free(gpointer priv_ptr) |
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{ |
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osd_priv_t *priv = (osd_priv_t *)priv_ptr; |
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g_free(priv); |
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} |
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/* position and extent of bounding box */ |
/* position and extent of bounding box */ |
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#define OSD_X (10) |
#define OSD_X (10) |
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#define OSD_Y (10) |
#define OSD_Y (10) |
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} |
} |
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static void |
static void |
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osm_gps_map_osd_render(OsmGpsMapPrivate *priv) { |
osm_gps_map_osd_render(osm_gps_map_osd_t *osd) { |
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osd_priv_t *priv = (osd_priv_t*)osd->priv; |
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/* first fill with transparency */ |
/* first fill with transparency */ |
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cairo_t *cr = cairo_create(priv->osd.overlay); |
cairo_t *cr = cairo_create(priv->overlay); |
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
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cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
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cairo_paint(cr); |
cairo_paint(cr); |
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osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW); |
osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW); |
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osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE); |
osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE); |
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osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW); |
osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW); |
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osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, priv->osd.cb != NULL); |
osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
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osm_gps_map_osd_zoom_labels(cr, x, y); |
osm_gps_map_osd_zoom_labels(cr, x, y); |
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osm_gps_map_osd_dpad_labels(cr, x, y); |
osm_gps_map_osd_dpad_labels(cr, x, y); |
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osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE); |
osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE); |
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osm_gps_map_osd_dpad_gps(cr, x, y); |
osm_gps_map_osd_dpad_gps(cr, x, y); |
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osm_gps_map_osd_labels(cr, Z_RAD/6, priv->osd.cb != NULL); |
osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
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cairo_destroy(cr); |
cairo_destroy(cr); |
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} |
} |
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static void |
static void |
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osm_gps_map_osd_draw_controls (OsmGpsMap *map, gint xoffset, gint yoffset) |
osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, gint xoffset, gint yoffset) |
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{ |
{ |
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OsmGpsMapPrivate *priv = map->priv; |
osd_priv_t *priv = (osd_priv_t*)osd->priv; |
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/* backup previous contents */ |
/* backup previous contents */ |
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if(!priv->osd.backup) |
if(!priv->backup) |
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priv->osd.backup = gdk_pixmap_new(priv->pixmap, OSD_W+2, OSD_H+2, -1); |
priv->backup = gdk_pixmap_new(osd->pixmap, OSD_W+2, OSD_H+2, -1); |
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gint x = OSD_X + EXTRA_BORDER + xoffset; |
gint x = OSD_X + xoffset; |
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gint y = OSD_Y + EXTRA_BORDER + yoffset; |
gint y = OSD_Y + yoffset; |
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/* create backup of background */ |
/* create backup of background */ |
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gdk_draw_drawable(priv->osd.backup, |
gdk_draw_drawable(priv->backup, |
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GTK_WIDGET(map)->style->fg_gc[GTK_WIDGET_STATE(GTK_WIDGET(map))], |
osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)], |
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priv->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2); |
osd->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2); |
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priv->osd.backup_x = x-1; |
priv->backup_x = x-1; |
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priv->osd.backup_y = y-1; |
priv->backup_y = y-1; |
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/* OSD itself uses some off-screen rendering, so check if the */ |
/* OSD itself uses some off-screen rendering, so check if the */ |
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/* offscreen buffer is present and create it if not */ |
/* offscreen buffer is present and create it if not */ |
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if(!priv->osd.overlay) { |
if(!priv->overlay) { |
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/* create overlay ... */ |
/* create overlay ... */ |
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priv->osd.overlay = |
priv->overlay = |
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cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H); |
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H); |
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/* ... and render it */ |
/* ... and render it */ |
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osm_gps_map_osd_render(priv); |
osm_gps_map_osd_render(osd); |
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} |
} |
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// now draw this onto the original context |
// now draw this onto the original context |
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cairo_t *cr = gdk_cairo_create(priv->pixmap); |
cairo_t *cr = gdk_cairo_create(osd->pixmap); |
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cairo_set_source_surface(cr, priv->osd.overlay, x, y); |
cairo_set_source_surface(cr, priv->overlay, x, y); |
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cairo_paint(cr); |
cairo_paint(cr); |
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cairo_destroy(cr); |
cairo_destroy(cr); |
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} |
} |
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static void |
static void |
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osm_gps_map_osd_restore (OsmGpsMap *map) |
osm_gps_map_osd_restore (osm_gps_map_osd_t *osd) |
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{ |
{ |
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OsmGpsMapPrivate *priv = map->priv; |
osd_priv_t *priv = (osd_priv_t*)osd->priv; |
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/* restore backup of previous contents */ |
/* restore backup of previous contents */ |
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if(priv->osd.backup) { |
if(priv->backup) { |
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/* create backup of background */ |
/* create backup of background */ |
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gdk_draw_drawable(priv->pixmap, |
gdk_draw_drawable(osd->pixmap, |
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GTK_WIDGET(map)->style->fg_gc[GTK_WIDGET_STATE(GTK_WIDGET(map))], |
osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)], |
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priv->osd.backup, 0, 0, |
priv->backup, 0, 0, |
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priv->osd.backup_x, priv->osd.backup_y, OSD_W+2, OSD_H+2); |
priv->backup_x, priv->backup_y, OSD_W+2, OSD_H+2); |
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} |
} |
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} |
} |
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static void |
static void |
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osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdGpsCallback cb, gpointer data) |
osm_gps_map_osd_free(osm_gps_map_osd_t *osd) |
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{ |
{ |
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OsmGpsMapPrivate *priv; |
osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
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if (priv->backup) |
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g_object_unref(priv->backup); |
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if (priv->overlay) |
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cairo_surface_destroy(priv->overlay); |
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g_free(priv); |
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} |
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static osm_gps_map_osd_t osd_classic = { |
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.restore = osm_gps_map_osd_restore, |
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.draw = osm_gps_map_osd_draw, |
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.check = osm_gps_map_osd_check, |
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.render = osm_gps_map_osd_render, |
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.free = osm_gps_map_osd_free, |
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.cb = NULL, |
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.data = NULL, |
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.priv = NULL |
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}; |
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/* this is the only function that's externally visible */ |
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void |
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osm_gps_map_osd_classic_init(OsmGpsMap *map) |
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{ |
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osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
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osd_classic.priv = priv; |
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osm_gps_map_register_osd(map, &osd_classic); |
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} |
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void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) { |
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osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
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g_return_if_fail (OSM_IS_GPS_MAP (map)); |
g_return_if_fail (osd); |
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priv = map->priv; |
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priv->osd.cb = cb; |
osd->cb = cb; |
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priv->osd.data = data; |
osd->data = data; |
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/* this may have changed the state of the gps button */ |
/* this may have changed the state of the gps button */ |
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/* we thus re-render the overlay */ |
/* we thus re-render the overlay */ |
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osm_gps_map_osd_render(priv); |
osd->render(osd); |
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osm_gps_map_map_redraw_idle(map); |
osm_gps_map_redraw(map); |
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} |
} |