#include <gtk/gtk.h>
#include <math.h>
+#include <stdio.h>
#include "coords.h"
#include "vikcoord.h"
+#include "vikwindow.h"
#include "vikviewport.h"
#include "mapcoord.h"
GdkGC *background_gc;
GdkColor background_color;
+ GdkGC *scale_bg_gc;
+ gboolean draw_scale;
+ gboolean draw_centermark;
/* subset of coord types. lat lon can be plotted in 2 ways, google or exp. */
VikViewportDrawMode drawmode;
VikViewport *vik_viewport_new ()
{
- return VIK_VIEWPORT ( g_object_new ( VIK_VIEWPORT_TYPE, NULL ) );
+ VikViewport *vv = VIK_VIEWPORT ( g_object_new ( VIK_VIEWPORT_TYPE, NULL ) );
+ return vv;
}
static void viewport_init ( VikViewport *vvp )
/* TODO: not static */
vvp->xmpp = 4.0;
vvp->ympp = 4.0;
- vvp->coord_mode = VIK_COORD_UTM;
- vvp->drawmode = VIK_VIEWPORT_DRAWMODE_UTM;
- vvp->center.north_south = 0;
- vvp->center.east_west = -166021;
+ vvp->coord_mode = VIK_COORD_LATLON;
+ vvp->drawmode = VIK_VIEWPORT_DRAWMODE_MERCATOR;
+ vvp->center.mode = VIK_COORD_LATLON;
+ vvp->center.north_south = 40.714490;
+ vvp->center.east_west = -74.007130;
vvp->center.utm_zone = 31;
vvp->center.utm_letter = 'N';
vvp->scr_buffer = NULL;
vvp->alpha_pixbuf_width = vvp->alpha_pixbuf_height = 0;
vvp->utm_zone_width = 0.0;
vvp->background_gc = NULL;
+ vvp->scale_bg_gc = NULL;
+ vvp->draw_scale = TRUE;
+ vvp->draw_centermark = TRUE;
g_signal_connect (G_OBJECT(vvp), "configure_event", G_CALLBACK(vik_viewport_configure), NULL);
}
vvp->background_gc = vik_viewport_new_gc ( vvp, "", 1 );
vik_viewport_set_background_color ( vvp, DEFAULT_BACKGROUND_COLOR ); /* set to "backup" color in vvp->background_color */
}
+ if ( !vvp->scale_bg_gc) {
+ vvp->scale_bg_gc = vik_viewport_new_gc(vvp, "grey", 3);
+ }
return FALSE;
}
if ( vvp->background_gc )
g_object_unref ( G_OBJECT ( vvp->background_gc ) );
+ if ( vvp->scale_bg_gc ) {
+ g_object_unref ( G_OBJECT ( vvp->scale_bg_gc ) );
+ vvp->scale_bg_gc = NULL;
+ }
+
G_OBJECT_CLASS(parent_class)->finalize(gob);
}
gdk_draw_rectangle(GDK_DRAWABLE(vvp->scr_buffer), vvp->background_gc, TRUE, 0, 0, vvp->width, vvp->height);
}
+void vik_viewport_set_draw_scale ( VikViewport *vvp, gboolean draw_scale )
+{
+ vvp->draw_scale = draw_scale;
+}
+
+gboolean vik_viewport_get_draw_scale ( VikViewport *vvp )
+{
+ return vvp->draw_scale;
+}
+
+void vik_viewport_draw_scale ( VikViewport *vvp )
+{
+ if ( vvp->draw_scale ) {
+ VikCoord left, right;
+ gdouble unit, base, diff, old_unit, old_diff, ratio;
+ gint odd, len, PAD = 10, SCSIZE = 5, HEIGHT=10;
+ PangoFontDescription *pfd;
+ PangoLayout *pl;
+ gchar s[128];
+
+ g_return_if_fail ( vvp != NULL );
+
+ vik_viewport_screen_to_coord ( vvp, 0, vvp->height, &left );
+ vik_viewport_screen_to_coord ( vvp, vvp->width/SCSIZE, vvp->height, &right );
+
+ base = vik_coord_diff ( &left, &right ); // in meters
+ ratio = (vvp->width/SCSIZE)/base;
+
+ unit = 1;
+ diff = fabs(base-unit);
+ old_unit = unit;
+ old_diff = diff;
+ odd = 1;
+ while (diff <= old_diff) {
+ old_unit = unit;
+ old_diff = diff;
+ unit = unit * (odd%2 ? 5 : 2);
+ diff = fabs(base-unit);
+ odd++;
+ }
+ unit = old_unit;
+ len = unit * ratio;
+
+ /* white background */
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc,
+ PAD, vvp->height-PAD, PAD + len, vvp->height-PAD);
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc,
+ PAD, vvp->height-PAD, PAD, vvp->height-PAD-HEIGHT);
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc,
+ PAD + len, vvp->height-PAD, PAD + len, vvp->height-PAD-HEIGHT);
+ /* black scale */
+ vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
+ PAD, vvp->height-PAD, PAD + len, vvp->height-PAD);
+ vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
+ PAD, vvp->height-PAD, PAD, vvp->height-PAD-HEIGHT);
+ vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
+ PAD + len, vvp->height-PAD, PAD + len, vvp->height-PAD-HEIGHT);
+ if (odd%2) {
+ int i;
+ for (i=1; i<5; i++) {
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc,
+ PAD+i*len/5, vvp->height-PAD, PAD+i*len/5, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2)));
+ vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
+ PAD+i*len/5, vvp->height-PAD, PAD+i*len/5, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2)));
+ }
+ } else {
+ int i;
+ for (i=1; i<10; i++) {
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc,
+ PAD+i*len/10, vvp->height-PAD, PAD+i*len/10, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2)));
+ vik_viewport_draw_line(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
+ PAD+i*len/10, vvp->height-PAD, PAD+i*len/10, vvp->height-PAD-((i==5)?(2*HEIGHT/3):(HEIGHT/2)));
+ }
+ }
+ pl = gtk_widget_create_pango_layout (GTK_WIDGET(&vvp->drawing_area), NULL);
+ pfd = pango_font_description_from_string ("Sans 8"); // FIXME: settable option? global variable?
+ pango_layout_set_font_description (pl, pfd);
+ pango_font_description_free (pfd);
+
+ if (unit >= 1000) {
+ sprintf(s, "%d km", (int)unit/1000);
+ } else {
+ sprintf(s, "%d m", (int)unit);
+ }
+ pango_layout_set_text(pl, s, -1);
+ vik_viewport_draw_layout(vvp, GTK_WIDGET(&vvp->drawing_area)->style->black_gc,
+ PAD + len + PAD, vvp->height - PAD - 10, pl);
+ }
+}
+
+void vik_viewport_set_draw_centermark ( VikViewport *vvp, gboolean draw_centermark )
+{
+ vvp->draw_centermark = draw_centermark;
+}
+
+gboolean vik_viewport_get_draw_centermark ( VikViewport *vvp )
+{
+ return vvp->draw_centermark;
+}
+
+void vik_viewport_draw_centermark ( VikViewport *vvp )
+{
+ if ( !vvp->draw_centermark )
+ return;
+
+ const int len = 30;
+ const int gap = 4;
+ int center_x = vvp->width/2;
+ int center_y = vvp->height/2;
+ GdkGC * black_gc = GTK_WIDGET(&vvp->drawing_area)->style->black_gc;
+
+ /* white back ground */
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x - len, center_y, center_x - gap, center_y);
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x + gap, center_y, center_x + len, center_y);
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y - len, center_x, center_y - gap);
+ vik_viewport_draw_line(vvp, vvp->scale_bg_gc, center_x, center_y + gap, center_x, center_y + len);
+ /* black fore ground */
+ vik_viewport_draw_line(vvp, black_gc, center_x - len, center_y, center_x - gap, center_y);
+ vik_viewport_draw_line(vvp, black_gc, center_x + gap, center_y, center_x + len, center_y);
+ vik_viewport_draw_line(vvp, black_gc, center_x, center_y - len, center_x, center_y - gap);
+ vik_viewport_draw_line(vvp, black_gc, center_x, center_y + gap, center_x, center_y + len);
+
+}
+
void vik_viewport_sync ( VikViewport *vvp )
{
g_return_if_fail ( vvp != NULL );
void vik_viewport_pan_sync ( VikViewport *vvp, gint x_off, gint y_off )
{
+ gint x, y, wid, hei;
+
g_return_if_fail ( vvp != NULL );
gdk_draw_drawable(GTK_WIDGET(vvp)->window, GTK_WIDGET(vvp)->style->bg_gc[0], GDK_DRAWABLE(vvp->scr_buffer), 0, 0, x_off, y_off, vvp->width, vvp->height);
+
+ if (x_off >= 0) {
+ x = 0;
+ wid = x_off;
+ } else {
+ x = vvp->width+x_off;
+ wid = -x_off;
+ }
+ if (y_off >= 0) {
+ y = 0;
+ hei = y_off;
+ } else {
+ y = vvp->height+y_off;
+ hei = -y_off;
+ }
+ gtk_widget_queue_draw_area(GTK_WIDGET(vvp), x, 0, wid, vvp->height);
+ gtk_widget_queue_draw_area(GTK_WIDGET(vvp), 0, y, vvp->width, hei);
}
void vik_viewport_set_zoom ( VikViewport *vvp, gdouble xympp )
}
}
+void a_viewport_clip_line ( gint *x1, gint *y1, gint *x2, gint *y2 )
+{
+ if ( *x1 > 20000 || *x1 < -20000 ) {
+ gdouble shrinkfactor = ABS(20000.0 / *x1);
+ *x1 = *x2 + (shrinkfactor * (*x1-*x2));
+ *y1 = *y2 + (shrinkfactor * (*y1-*y2));
+ } else if ( *y1 > 20000 || *y1 < -20000 ) {
+ gdouble shrinkfactor = ABS(20000.0 / *x1);
+ *x1 = *x2 + (shrinkfactor * (*x1-*x2));
+ *y1 = *y2 + (shrinkfactor * (*y1-*y2));
+ } else if ( *x2 > 20000 || *x2 < -20000 ) {
+ gdouble shrinkfactor = ABS(20000.0 / (gdouble)*x2);
+ *x2 = *x1 + (shrinkfactor * (*x2-*x1));
+ *y2 = *y1 + (shrinkfactor * (*y2-*y1));
+ g_print("%f, %d, %d\n", shrinkfactor, *x2, *y2);
+ } else if ( *y2 > 20000 || *y2 < -20000 ) {
+ gdouble shrinkfactor = ABS(20000.0 / (gdouble)*x2);
+ *x2 = *x1 + (shrinkfactor * (*x2-*x1));
+ *y2 = *y1 + (shrinkfactor * (*y2-*y1));
+ }
+}
+
void vik_viewport_draw_line ( VikViewport *vvp, GdkGC *gc, gint x1, gint y1, gint x2, gint y2 )
{
if ( ! ( ( x1 < 0 && x2 < 0 ) || ( y1 < 0 && y2 < 0 ) ||
- ( x1 > vvp->width && x2 > vvp->width ) || ( y1 > vvp->height && y2 > vvp->height ) ) )
- gdk_draw_line ( vvp->scr_buffer, gc, x1, y1, x2, y2);
+ ( x1 > vvp->width && x2 > vvp->width ) || ( y1 > vvp->height && y2 > vvp->height ) ) ) {
+ /*** clipping, yeah! ***/
+ a_viewport_clip_line ( &x1, &y1, &x2, &y2 );
+ gdk_draw_line ( vvp->scr_buffer, gc, x1, y1, x2, y2);
+ }
}
void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 )
vvp->google_calcx_rev_fact = 1 / vvp->google_calcx_fact;
vvp->google_calcy_rev_fact = 1 / vvp->google_calcy_fact;
}
+
+
+const gchar *vik_viewport_get_drawmode_name(VikViewport *vv, VikViewportDrawMode mode)
+ {
+ const gchar *name = NULL;
+ VikWindow *vw = NULL;
+ GtkWidget *mode_button;
+ GtkWidget *label;
+
+ vw = VIK_WINDOW_FROM_WIDGET(vv);
+ mode_button = vik_window_get_drawmode_button(vw, mode);
+ label = gtk_bin_get_child(GTK_BIN(mode_button));
+
+ name = gtk_label_get_text ( GTK_LABEL(label) );
+
+ return name;
+
+}
+
+void vik_viewport_get_min_max_lat_lon ( VikViewport *vp, gdouble *min_lat, gdouble *max_lat, gdouble *min_lon, gdouble *max_lon )
+{
+ VikCoord tleft, tright, bleft, bright;
+
+ vik_viewport_screen_to_coord ( vp, 0, 0, &tleft );
+ vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &tright );
+ vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &bleft );
+ vik_viewport_screen_to_coord ( vp, vp->width, vp->height, &bright );
+
+ vik_coord_convert(&tleft, VIK_COORD_LATLON);
+ vik_coord_convert(&tright, VIK_COORD_LATLON);
+ vik_coord_convert(&bleft, VIK_COORD_LATLON);
+ vik_coord_convert(&bright, VIK_COORD_LATLON);
+
+ *max_lat = MAX(tleft.north_south, tright.north_south);
+ *min_lat = MIN(bleft.north_south, bright.north_south);
+ *max_lon = MAX(tright.east_west, bright.east_west);
+ *min_lon = MIN(tleft.east_west, bleft.east_west);
+}
projects / andy / viking.git / blobdiff